JPH06156436A - Device for banding bag making-packaging-filling machine - Google Patents

Abstract

(57) [Summary] [Purpose] Even if the thickness of the packaged product wrapped with tape changes,
To provide a banding device of a bag making packaging filling machine capable of neatly packing a packaged product with a tape with a constant tension. [Structure] This device M1 includes a reel portion around which a tape T is wound, a seal / cut portion 11 that heat-seals and cuts the tape T around a packaged product W, and a reel / seal portion.
A roller group 21 that guides the tape T to the cut portion 11. A tension roller 38 that applies a constant tension to the tape T is arranged in the roller group 21. The tension roller 38 applies a constant tension to the tape T by the urging force of the air cylinder 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a banding device for tape-tapping a predetermined number of packaged products in a bag making and packaging machine for producing packaged products containing contents such as powder. .

[0002]

2. Description of the Related Art Conventionally, in this type of banding device, a reel part around which a tape for collecting the accumulated packaged products and a seal for cutting the tape wrapped around the packaged products by heat sealing are cut. It had a cut section and a group of rollers that guide the tape from the reel section to the seal / cut section.

Then, a tension roller is arranged in the roller group in order to apply a constant tension to the tape.

This tension roller is arranged so that a certain amount of tension is applied to a tape for wrapping a packaged product so that the tape can wrap the packaged product neatly.
The tape was wound for about half the circumference and was urged by a coil spring that urges the tape in a pulling direction.

However, in the conventional banding device, the tension roller that applies a constant tension to the tape is
Since the coil spring is used as the urging means, when the thickness of the packed packaged product changes, the length of the tape that wraps the packaged product changes and the tension roller is urged. The actual length of the coil spring that was used fluctuated greatly, and the biasing force of the coil spring when it came around greatly changed, making it difficult to clean the packaged product with tape and causing banding defects.

The present invention solves the above-mentioned problems, and even if the thickness of the packaged product wrapped by the tape changes, the packaged product can be neatly wrapped with the tape at a constant tension. An object of the present invention is to provide a banding device for a bag packaging and filling machine.

[0007]

SUMMARY OF THE INVENTION A banding device according to the present invention comprises a reel part around which the tape is wound and a winding part around the packaged product in order to tape the packaged products which are collected and conveyed on a chute. Seal tape that heat-seals and cuts the tape
A banding of a bag-making packaging-filling machine, comprising: a roller group that guides the tape to a cut portion, and a tension roller that is biased by a biasing means and that applies a constant tension to the tape is arranged on the roller group. In the apparatus, the urging means is a fluid pressure cylinder.

[0008]

In the banding device according to the present invention, the tension roller for applying a constant tension to the tape is urged by the fluid pressure cylinder using a fluid such as air or oil.

Therefore, even if the thickness of the accumulated packaged product changes, the length of the wrapping tape changes, and the stroke of the piston rod of the fluid pressure cylinder also changes, the pressure of the fluid such as air or oil is changed. When constant, the fluid pressure cylinder can always apply a constant tension to the tape that wraps the packet.

Therefore, in the banding device according to the present invention, even if the thickness of the packaged product wrapped with tape changes,
With a certain tension, you can neatly tape the packaged items together.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

The bag making and packaging machine M0 of the embodiment is shown in FIGS.
As shown in (1), a packaged product W consisting of three packages B is manufactured, and 7 packaged products W are collected and banded,
It is to be packed in a box.

As shown in FIG. 5, the bag making and packaging and filling machine M0 includes a weighing and filling device M2, a sealing device M3, a cutter device M4, a weighing device M5, a stacking device M6, a banding device M1, and a boxing device (not shown). , A single package weighing device M7 and a filling amount adjusting device M8.

The metering and filling device M2 measures a fixed amount of content and supplies it to the sealing device M3. The sealing device M3 is to heat-seal the packaging films F and F while filling the contents from the weighing and filling device M2 to continuously form a packaged product W consisting of three packages B each.
The cutter device M4 is for performing left and right cutting of a continuous packaged product W, formation of eye notches and slits, and further cutting to separate the packaged products W one by one.

Furthermore, the weighing device M5 weighs the packaged product W, and the stacking device M6 provides the packaged product W.
7 are integrated, and the banding device M1
As will be described later, the seven packed packages W are wrapped with a tape T, and the packaging device is a device for packing the packaged products W banded with the tape T into a packaging box.

Further, the single-packet weighing device M7 operates the predetermined blade of the cutter device M4 at a predetermined time to separate the packaged products W into individual packages, and weighs the individual packages B individually. It is a thing.

The filling amount adjusting device M8 is for adjusting the amount of the contents supplied from the weighing and filling device M2 to the sealing device M3 based on the weighing results of the weighing device M5 and the single package weighing device M7. It adjusts the volume of the measuring rig provided in M2.

Then, the banding apparatus M1 of the embodiment
1. As shown in FIGS. 1, 4, and 5, the reel unit 1 includes a reel unit 1, a seal / cut unit 11, and a roller group 21.

The reel section 1 comprises two tape reels 2 and 2 each wound with a tape T made of a synthetic resin film.
And a known auto-splicer 3 which, when one of the tape reels 2 is emptied, heat-seals the tape T fed from the new tape reel 2 to the rear end portion of the tape T which has already been fed out. ,,.

The seal / cut portion 11 is for sealing the tape T wound around the packaged product W by heat and cutting it.
The upper heater 12, the lower heater 14, and a cutter 13 that is vertically movable inside the upper heater 12 are configured.

The upper heater 12 and the lower heater 14 are cams.
Bag making and packaging machine M via a link mechanism (illustration omitted)
The driving force from the driving source of 0 is transmitted, and the driving powers of 0 approach each other. In this case, the downward movement stroke of the upper heater 12 is set longer than the upward movement stroke of the lower heater 14.

The cutter 13 descends along with the upper heater 12 when the upper heater 12 moves downward, and further descends after the upper heater 12 and the lower heater 14 contact each other. The tape T is inserted into the concave portion 14a of the heater 14 and cuts the tape T at the portion which is heat-sealed by the upper and lower heaters 12 and 14.

Reference numeral 15 is a receiving plate, and 16 is a stopper for stopping the tape T by abutting the rubber roll 16a at the tip end to the receiving plate 15 by an air cylinder (not shown). Reference numeral 17 is a free roller fixed to the upper heater 12.

Further, since the portion of the tape T to be cut by the cutter 13 is the center of the heat-sealed portion in the conveying direction of the packaged product W, the sealed portion is the seal portion C1 on the packaged product W side (FIG. 1). 6) and the seal portion C on the roller group 21 side
2, the tape T continues from the roller group 21 to the lower side of the seal / cut portion 11 even if the packet W is banded.

Then, the continuous tape T below the seal / cut portion 11 is stopped by the stopper 16, and the accumulated packaged products W are conveyed by the chain conveyor 5, so that the roller group 21
With the tape T on the side, the packaged product W can be wrapped. In addition, the packed packaged products W are
Hook 5a of the chain conveyor 5 that intermittently circulates
It is pushed by and is conveyed on the chute 6.

Therefore, under the stopper 16, the used tape T having the sealing portion left is collected as scrap H, so that the pulling roller 18 and the pulling roller 18 are collected.
On the other hand, a rotatable pressing roller 19 that is pressed by an air cylinder (not shown) is provided.

The pulling roller 18 extends from the roller body 18a pressed by the pressing roller 19, the shaft portion 18b supported by the frame 60 of the bag making and packaging and filling machine M0, and the shaft portion 18b with a one-way clutch interposed. Lever 18c
And are provided. The lifting rod 20 is connected to the lever 18c, and the lifting rod 20
By moving up and down, lever 18c, one-way clutch,
The roller body 18a rotates via the shaft portion 18b, and the scrap H sandwiched between the pressing roller 19 and the roller body 18a of the pulling roller 18 is pulled downward by about 20 mm.

When the tape T supplied to the seal / cut portion 11 has a seam by the hot splicer 3, the pulling roller 18 does not break the packaged product W at the seam. In order to forcibly pull the tape T, a motor (not shown) is connected to the shaft portion 18b via a predetermined cam / clutch mechanism. In this motor (not shown), after the photoelectric switch 9 arranged between the electrostatic discharge free roller 35 and the free roller 36 in the roller group 21 described later detects the joint of the tape T, the joint is accumulated. It is configured to be driven immediately before the packaged product W is placed at the position where the packaged product W is wound. By the way, in the case of the embodiment, after the joint is detected by the photoelectric switch 9, the banding work for one time is completed, and then the driving state is set. Note that the seams are also present in the long tape T itself wound on the tape reel 2 other than when the auto-splicer 3 is actuated, and the seams of these tapes T themselves are also sent. The motor (not shown) is configured to be driven.

The roller group 21 is sealed from the reel unit 1.
It guides the tape T to the cut portion 11, and includes a feeding roller 23, a damper roller 27, stoppers 29 and 33, a feeding lever 30, a tension roller 38, and free rollers 22, 28, 31, 32, 36, and 37. ing.

The feeding roller 23 is held by the frame 60 and is rotationally driven by a motor (not shown). A pressing roller 24, which is biased by a coil spring 26, is pressed against the delivery roller 23. The delivery roller 23 is nipped between the delivery roller 23 and the pressure roller 24 and rotationally driven, so that the reel unit 1 is driven. The tape T will be pulled and let out.

The pressing roller 24 is pivotally supported by a lever 25a extending from a rotating shaft 25 held by a frame 60, and a lever 25b extending from the rotating shaft 25 has a coil spring 26 having one end held by the frame 60. By connecting the other end of the feeding roller 23, the feeding roller 23 is pressed.

The damper roller 27 is composed of a lever 27a rotatably supported by the frame 60 and two free rollers 27b. And, to each free roller 27b and three free rollers 28,
The tape T is wrapped around and the weight of the damper roller 27 causes
A slight tension is applied to the tape T.

The stopper 29 is an air cylinder 29a having a rubber rod 29c fixed to the tip of a piston rod 29b.
And a pedestal 29d that is pressed by the rubber rod 29c. The rubber rod 29c and the pedestal 29d sandwich the tape T, and the feeding of the tape T is stopped.

These feeding roller 23 and damper roller 2
7. When the tape T from the reel unit 1 is directly connected to the feeding lever 30 side, the stopper 29 is slackened by the tape T being excessively fed due to the inertia of the tape reel 2 at the time of feeding, and the packaged product W is beautifully drawn. The tape T between the reel portion 1 and the feeding lever 30 serves as a kind of cushioning body because the tape T is not pulled up. These operations are such that when the packaged product W is wound once or twice on the seal / cut portion 11 side, the damper roller 27 rotates clockwise in FIG. 1 by the amount of the tape T fed out. From this, the photoelectric switch 10 detects that the lever 27a of the damper roller 27 has rotated to a predetermined position, and the stopper 29 is activated by this detection to stop the movement of the tape T, and the feeding roller 23 (not shown). The motor is driven to rotate slowly to pull out the tape T from the reel unit 1 so as to return the lever 27a to the position shown in FIG.

The feeding lever 30 has a free roller 30 around which the tape T between the free rollers 31 and 32 is wound.
While a is pivotally supported, the base side is pivotally supported by the frame 60, and by the vertical movement of the lifting rod 50,
It is configured to rotate. The lifting rod 50
Is configured to be given a driving force when it is moved downward, and is not given a driving force when it is moved upward, and is configured to rise in a free state due to the tension of the tape T.

The stopper 33, like the stopper 29,
An air cylinder 33a having a rubber rod 33c at the tip of the piston rod 33b, and a pedestal 33 pressed by the rubber rod 33c.
It is configured such that the feeding of the tape T can be stopped by pressing the rubber rod 33c against the receiving base 33d.

These feeding lever 30 and stopper 33
With the stopper 29, the tape T having a length obtained by adding a slight margin to the length of the tape T for one wrapping of the packaged product W is stored.

These operations are such that when the packing / cutting portion 11 starts to pack the packaged product W, the stopper 29 is operated and the feeding of the tape T is stopped (at this time, the stopper T feeds the tape T). The tape T is pulled out to the seal / cut portion 11 side with the banding work, so that the feeding lever 30 rotates clockwise as shown in FIGS. At this time, on the damper roller 27 side, as described above, the stopper 29 is operated to stop the feeding of the tape T, and the feeding roller 23 is rotationally driven.

After that, when the upper and lower heaters 12 and 14 start to approach each other at the seal / cut portion 11, the stopper 29 contracts the piston rod 29b to release the tape T from being stopped, and the stopper 33 causes the piston rod 3 to move.
3b is extended and the feeding of the tape T is stopped.

Then, the elevating rod 50 operates, the feeding lever 30 rotates counterclockwise in FIGS. 1 and 2, and operates so as to pull out the tape T on the damper roller 27 side.
It is configured to be in the state shown in.

The electrostatic discharge free roller 35 is held by the frame 60 to remove the static electricity charged on the tape T, and discharges the static electricity to the frame 60. A pressing plate 34 presses the tape T wound around the free roller 35 by its own weight. The pressing plate 34 is
The tape T is prevented from being excessively fed to the tension roller 38 side.

The tension roller 38 applies a constant tension to the tape T via an air cylinder 40 as a biasing means, and is rotatably supported by the tip of a rotation lever 39 so as to be a free roller. The tape T between 36 and 37 is wound.

The base of the turning lever 39 is the frame 60.
On the other hand, it is rotatably supported by a rotation shaft parallel to the tension roller 38, and a piston rod 40a of an air cylinder 40 is connected to an intermediate portion between the base portion and the tip of the rotation lever 39. .

The air cylinder 40 has a cylinder body 40a.
And a piston rod 40b that slides on the cylinder body 40a with low friction, and a precision pressure control valve (not shown) is provided to contract the piston rod 40b at a constant pressure. Has been done. The base side of the cylinder body 40a is rotatably held by the frame 60.

The reel portion 1 and the seal / cut portion 1 described above
1 and each driving portion of the roller group 21 (for example, vertical movement of the upper / lower heaters 12/14 / elevating rods 20/50, a motor (not shown) for the feeding roller 23, a stopper 29/3.
3 air cylinders 29a, 33a, etc.) are appropriately operated from a drive source of the bag making and packaging machine M0 via a cam, a gear mechanism, or the like, or a control device (not shown) is sequentially operated. ing.

Next, the operation mode of the banding device M1 of the embodiment will be described. First, the integrated packaged products W are collected.
From the state shown in FIG. 1 to the state shown in FIG.
The chute 6 is pushed by the hook 5a of the chain conveyor 5
It is conveyed over and is pushed between the open upper and lower heaters 12 and 14.

At this time, the stopper 16 of the seal / cut portion 11 brings the rubber roll 16a into contact with the receiving plate 15 to stop the scrap H side. Further, the stopper 29 presses the rubber rod 29c against the receiving table 29d to stop the tape T, and the stopper 33 separates the rubber rod 33c from the receiving table 33d. Therefore, the free rollers 31, 30a, 32
The tape T in between is fed while rotating the feeding lever 30 counterclockwise in FIGS. 1 and 2, and the stopper 33, the free roller 35, the free roller 36, the tension roller 38,
Further, the tape T that has passed through the free roller 37 is wrapped by the package W while being guided by the free roller 17.

The upper heater 12 and the cutter 13 descend, and the lower heater 14 rises to heat-seal the end portion of the tape T containing the packaged product W, and the cutter 13 further descends. Then, the end of the heat-sealed tape T is cut.

When the upper heater 12 starts descending,
As shown in FIG. 3, the stopper 33 presses the rubber rod 33c against the receiving base 33d to stop the feeding of the tape T.

As a result, the upper heater 1 for heat sealing
When 2 further descends so as to come into contact with the lower heater 14, tension is applied to the tape T holding the package W as shown in FIG. The air cylinder 4 via the moving lever 39.
The tensile force is for 0.

At this time, if the air pressure of the air cylinder 40 is kept constant, even if the rotary lever 39 rotates counterclockwise in FIG. 4 and the piston rod 40b extends, the packaged product W is held. The air cylinder 40 can apply a constant tension to the tape T.

Then, in that state, the upper and lower heaters 12 and
Since the tape T is heat-sealed by 14, the packet W can be neatly banded with the tape T and can be cut with the cutter 13.

In this case, even if the thickness of the packed packaged products W changes and the length of the tape T that wraps changes, and the tension roller 38 moves via the rotating lever 39, the air cylinder 40 moves. If the air pressure is kept constant, the tension roller 38 can always apply a constant tension to the tape T that wraps the packaged product.

Therefore, the banding device M of the embodiment
In No. 1, even if the thickness of the packaged product W wrapped with the tape T changes, the packaged product W can be wrapped with the tape neatly with a constant tension.

After that, the upper and lower heaters 12 and 14 and the cutter 13 are returned to their original positions, and the stopper 33 is moved to the rubber rod 33c.
As the lifting rod 20 moves up and down when the lever is moved away from the receiving table 33d, the lever 18c
The pressure roller 19 and the tension roller 18 are provided via the shaft portion 18b.
The scrap H sandwiched between the roller body 18a and the roller body 18a is pulled downward by the rotation driving of the roller body 18a, and a new tape T is arranged between the upper and lower heaters 12 and 14 (see FIG. 1). . By this time, new tape T from the damper roller 27 side is stored on the feeding lever 30 side.

Further, the air pressure of the air cylinder 40 causes the rotating lever 39 and the tension roller 38 to return to their original positions.

Then, the banded package W is
The hook 5a of the chain conveyor 5 that moves intermittently pushes the chute 6 toward the boxing device (not shown), and a new packaged product W is pushed by the hook 5a of the chain conveyor 5. Being transported on the chute 6,
It is pushed between the open upper and lower heaters 12 and 14, and the above-mentioned steps are sequentially repeated.

In the embodiment, the packaged product W banded with the tape T is sucked and lifted by the suction rod 55 at the tape T portion before being transferred to a boxing device (not shown). It is checked whether a defect has occurred, and the weight is checked on the weighing pan 56. When a banding defect or the like has occurred, the belt conveyor 61 is
As shown by the two-dot chain line, the defective products are discharged so as not to be sent to the next process.

Incidentally, in the embodiment, the air cylinder 40
The case where the pulling force for contracting the piston rod 40b of No. 4 is used as the urging force is shown.
0 is arranged, and the piston rod 40 of the air cylinder 40 is
The tape T may be tensioned by a pressing force for stretching b.

In the embodiment, the air cylinder 40 as the urging means is connected to the rotating lever 39, but as shown in FIG.
The tension roller 38 may be arranged at the tip of the piston rod 40b of the air cylinder 40.

Further, as shown in FIG.
A lever portion 39a is provided on the extension of 9, and the lever portion 39a
The piston rod 40b of the air cylinder 40 may be rotatably supported on a, and the link 41 oscillated by the cam 42 may be rotatably supported on the end of the cylinder body 40a of the air cylinder 40. With such a configuration, the tape T can be stored around the tension roller 38 by the rotation of the cam 42, so that the feeding lever 30 and the like can be omitted. And, of course, in this configuration, since the air cylinder 40 as the urging means is arranged between the link 41 and the rotating lever 39, a constant tension is constantly applied to the tape T, including during banding. It becomes possible to keep it.

[Brief description of drawings]

FIG. 1 is a diagram showing an operating state of the embodiment.

FIG. 2 is a diagram showing an operating state of the embodiment, showing a state after the state shown in FIG.

FIG. 3 is a diagram showing an operating state of the embodiment, showing a state after the state shown in FIG. 2;

FIG. 4 is a diagram showing an operating state of the embodiment, showing a state after the state shown in FIG. 3;

FIG. 5 is a schematic view showing a bag making packaging filling machine in which the embodiment is arranged.

FIG. 6 is a perspective view showing a packaged product which is banded by the apparatus of the embodiment.

FIG. 7 is a perspective view showing one packaged product manufactured in the same example.

FIG. 8 is a diagram showing another embodiment.

FIG. 9 is a diagram showing still another embodiment.

[Explanation of symbols]

 1 ... Reel part, 6 ... Shoot, 11 ... Seal / cut part, 21 ... Roller group, 38 ... Tension roller, 40 ... (Fluid pressure cylinder) air cylinder, 40b ... Piston rod, T ... Tape, W ... Packaged product , M0 ... Bag making and packing machine, M1 ... Banding device.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigetoshi Mochizuki 392 Tsukiji Shizuoka Plant, Fujieda City, Shizuoka Prefecture Tsumura Shizuoka Co., Ltd. (72) Inventor Toru Sugita 392 Tsukiji Tsukiji City, Fujieda City, Shizuoka Ltd. 72) Inventor Michio Nagasawa 392 Tsukiji, Fujieda City, Shizuoka Prefecture Tsumura Co., Ltd. Shizuoka Plant (72) Inventor Yuio Ishii 2-103 Nazuka-cho, Nishi-ku, Nagoya-shi, Aichi Prefecture

Claims (1)

[Claims] 1. A seal cut for heat-sealing and cutting the reel part around which the tape is wound and the tape wound around the packaged product in order to tape the packaged products that are accumulated and conveyed on a chute. And a roller group that guides the tape from the reel section to the seal / cut section, and a tension roller that is biased by a biasing unit to apply a constant tension to the tape is arranged in the roller group. In the banding device of the bag making and packaging and filling machine, the biasing means is a fluid pressure cylinder.