JPH0684164B2 - Vertical bag-making filling and packaging machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to setting a vertical sealer provided at the swing end of a horizontally swingable rotary arm provided on the front side of a machine in an operable state and opening the rotary arm. The present invention relates to a vertical bag-making filling and packaging machine that can be quickly released from the set state.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional vertical bag-filling and packaging machine in which a vertical sealer provided at a swing end of a horizontally swingable rotary arm provided on the front side of the machine is set in an operable state. FIG. 6 is a schematic plan view of a main part for explaining that and releasing the setting of the rotating arm in the opened state.

In FIG. 4, a continuous web w in the form of a strip, which is the paper to be wrapped, wraps the product dropping cylinder 1 so that the edges of the web w are superposed in a palm-shape with the front edges thereof and the web edges are above the vertical sealer 2. It is sandwiched by the pair of sandwiching guide bars 3, 3, the rotating arm 4 is closed, and the edges of the web w are sandwiched between the pair of heat seal bars 2a, 2a forming the vertical sealer 2. The vertical sealer 2 is set so as to be able to seal the edge of the web. A base end of the rotating arm 4 is housed in a housing 5 so as to be slidable in the longitudinal direction of the machine, and a slider 6 capable of sliding in the longitudinal direction.
It is pivotally supported at the front end, and when the lock handle 9 is loosened, it can turn from the solid line position to the dotted line position. Slider 6
By tightening the lock screw 8 attached to the housing 5, the slide in the front-rear direction can be locked. A screw shaft 7 is passed through the inside of the slider 6. The screw shaft 7 is provided so as to be rotatable with respect to the slider 6 and immovable in the axial direction, and a screw portion 7a at the rear end is screwed into the housing 5. Therefore, the slider 6 can be slid in the front-rear direction of the machine by loosening the lock screw 8 and rotating the screw shaft 7.

In order to heat seal the vertical sealer 2, the screw shaft 7 is rotated to fully pull out the slider 6, and the rotary arm 4 is pivoted from the dotted line position to the solid line position to tighten the lock handle 9. , A pair of heat seal bars forming vertical sealers 2 between film edges that overlap each other in a palmar shape on the front side of the product drop cylinder 1 while loosening the lock screw 8 and rotating the screw shaft 7 to retract the slider 6. Two
It is ensured to be sandwiched between a and 2a, and a space c between the product dropping cylinder 1 and the heat seal bar 2a is secured, and the lock screw 8
Tighten. To stop the packaging operation and open the rotating arm 4, loosen the lock handle 9, loosen the lock screw 8 and turn the screw shaft 7 to fully pull out the slider 6, and then loosen the lock handle 9. The rotary arm 4 from the solid line position to the dotted line position.

[0005]

According to the above-described conventional vertical bag-making filling and packaging machine, the larger the width dimension of the edge of the web is, the larger the width dimension of the edge of the web, as in the case of the zipper packaging, is to rotate the screw shaft 7 and pull out the slider 6. The amount of movement was large and troublesome. Further, in order to secure the space c between the product dropping cylinder 1 and the heat seal bar 2a, the worker must look into the face so that the space c can be seen and adjust the amount of turning the screw shaft 7 each time. It was troublesome.

The present invention has been devised in view of the above-mentioned points, and the slider can be moved without turning the screw shaft, and even if the width of the edge of the web is large as in the case of a zipper-equipped package, the heat-sealing is possible. The bar can be quickly moved to the position during packing operation and the retracted position, and once the screw shaft is turned as the initial setting to secure the space between the product dropping cylinder and the heat seal bar, the rotating arm can be moved. It is an object of the present invention to provide a vertical bag-making filling and packaging machine in which the above-mentioned interval can be maintained and the workability can be greatly improved even if the slider is rotated or the slider is moved.

[0007]

As a means for solving the above-mentioned problems, the present invention is to be wrapped with a continuous web w in the shape of a strip, which is a wrapped paper that is bent in a cylindrical shape and guided from the upper side to the lower side. In addition, a product dropping cylinder 1 for guiding the web w and a web edge provided on the rotating end of a rotating arm 4 capable of opening horizontally on the front side of the machine and overlapping the front and rear sides of the product dropping cylinder 1 on the front side. Vertical sealer 2 that vertically seals each other
And vertically feeding the vertically sealed packaging cylinder, dropping a predetermined amount of the object to be packaged through the product filling cylinder 1 into the packaging cylinder, and packaging the object to be packaged in the packaging cylinder. Is configured to laterally seal the required lower side and the required upper side, respectively, and the pivot arm 4 is housed in the housing 5 so as to be slidable in the front-rear direction of the machine and is attached to the front end of the slider 6 which can be locked. In the vertical bag-filling and packaging machine, which is pivotally supported and is configured such that the slider 6 can be slid in the longitudinal direction of the machine by rotating a screw shaft 7 which is passed through the inside of the screw shaft. The nut runner 1 is attached to a threaded portion 7a formed in a portion of the slider 7 extending rearward from the slider 6.
0 is screwed together, and a tightening tool 1 for tightening and fixing the nut runner 10 to the screw portion 7a.
1 is configured to be operable from the outside of the housing 5 through a slit 12 provided in the nut runner 10 and formed in the housing 5, and the slider 6
The vertical bag-making filling and packaging machine is characterized in that the nut runner 10 is constrained so that it can be moved within the housing 5 by a constant stroke when it is pulled out.

[0008]

Operation: Open the rotating arm 4 and loosen the tightening tool 11,
The rotation arm 4 is closed and fixed, the screw shaft 7 is rotated to draw the nut runner 10 to the front stop end, and then the screw shaft 7 is rotated to retract the slider 6 into the housing 5, and the vertical sealer 2 is dropped. When the lock screw 8 is tightened after the cylinder 1 is brought close to the required short distance, the screw shaft 7 is rotated in the opposite direction, and the nut runner 10 is pushed until it comes into contact with the rear stop end. The vertical sealer 2 can be heat-sealed.

Next, the rotary arm 4 is opened to open the product dropping cylinder 1.
When the operator wants to inspect the machine or adjust the web w by opening the front side of, the lock screw 8 is loosened and the slider 6 is moved in the pull-out direction. As a result, the vertical sealer 2 is pulled away from the product drop tube 1, and the vertical sealer 2 and the product drop tube 1 are separated.
It can be ensured that the distance between and is larger than the width dimension of the edge of the web w. After that, the rotating arm 4 can be swung open.

To make the vertical sealer 2 ready to be heat-sealed again, since the initial setting has already been made, the rotary arm 4 is closed and fixed, and the slider 6 is pushed into the housing 5 as much as possible. At this time, the vertical sealer 2 guides the web w so that the edges of the web w in the palmed state are inserted between the pair of heat seal bars, or the vertical sealer 2 slightly presses the overlapping state of the web w. To do so.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vertical bag-making filling and packaging machine according to the present invention will be described below with reference to FIGS. As shown in FIG. 2, the bag-making device of the vertical bag-making filling and packaging machine has a product dropping cylinder 1 whose upper end is connected to a hopper (not shown) or a packaged object supplying means (not shown), and an upper middle part of the product dropping cylinder 1. A few meters
The bag-making device 13 includes a bag-making device 13 that uniformly secures and surrounds a gap of m, and a continuous web w in the form of a strip, which is the paper to be wrapped, is formed so that the bag-making device 13 closely moves from the lower rear part to the upper rear part. 13 is extended from the rear of the bag making machine 13 toward the inner side of the curved edge of the bag making machine 13 that faces the product dropping cylinder 1.
The web w so that the product dropping cylinder 1 is wrapped with the web w
Is guided from above to below. A pair of guide bars 3 and 3 are provided on both sides of the front slit of the bag making machine 13 as a means for maintaining the overlapping of the web edges. The guide bars 3 and 3 shown in the figure maintain the edges of the webs so that the edges of the webs are overlapped in a palm shape. The vertical sealer 2 provided at the rotating end of the rotating arm 4 that can be horizontally opened to the right (or left) on the front side of the machine has a web-shaped edge that overlaps in the shape of a palm or front and back on the front side of the product dropping cylinder 1. Vertically seal. The vertical sealer 2 is provided with a pair of vertically extending heat seal bars 2a, 2a in the case of a tight-sealing seal, and web edges that overlap in the shape of a palm pass through the pair of heat seal bars 2a, 2a. Although not shown, in the case of envelope-tight sealing, one heat seal bar extending vertically is provided so as to be close to and away from the product dropping cylinder 1 so that the product can be dropped. Tube 1
On the front side of the envelope, web edges that overlap in the back and front of the envelope are pressed against the product dropping cylinder by the one heat seal bar and vertically sealed. Then, the vertically sealed packaging cylinder H is unrolled below the product dropping cylinder 1 by a paper-drawing belt or other means (not shown), and the product filling cylinder 1 is passed through the packaging cylinder H for a predetermined amount of packaging. In addition to dropping and filling objects, a horizontal sealer (not shown) laterally seals the required lower part and the required upper part of the object to be packaged in the packaging cylinder H, respectively.

The pivot arm 4 has its arm base end connected to a front end of a slider 6 housed in a housing 5 and extending in the front-rear direction of the machine by a pin 14, and the slider 6
When it is swung so as to be positioned at a right angle with respect to (closed line position in FIG. 1), a locking projection (not marked) provided at the base end of the arm is a bay-shaped engagement provided at the front end of the slider 6. The slider 6 stops contacting with the stop recess (not marked) and stops.
The rocking is locked by tightening the lock handle 9 provided at, and conversely, when the lock handle 9 is loosened, the lock handle 9 is swung from the solid line position to the dotted line position and opened. The slider 6 is slidably fitted in the housing 5 and the slide in the front-rear direction can be locked by tightening a lock screw 8 attached to the housing 5. Inside the slider 6, there is a screw shaft 7
Has been passed through. The screw shaft 7 is provided so as to be rotatable with respect to the slider 6 and immovable in the axial direction, and a nut runner 10 having a slit is screwed into a screw portion 6a at a rear end thereof. Runner 1
A bolt 11 is attached as a tightening tool for tightening the 0 slot and tightening and fixing the nut runner 10 to the screw portion 7a. The tightening tool 11 can be tightened from the outside of the housing 5 through a slit 12 formed in the housing 5. The nut runner 10 has a head fitted in the slit 12 so that it can be moved by a fixed stroke, and the length of the slit 12 is longer than the width of the web edge where the strokes of the nut runner 10 overlap in a palm shape. Large enough dimension, eg 1
It is set to 00 mm. Therefore, when the tightening tool 11 is tightened, the nut runner 10 is locked in the screw engagement with the threaded portion 7a, but if the lock screw 8 is loosened, the slider 6 is pulled out or pushed in by the stroke of the nut runner 10. It is supposed to be done.

Next, the operation of the embodiment will be described. To initially set the vertical sealer 2 in a heat-sealable state, the rotary arm 4 is opened, the tightening tool 11 is loosened to release the tightening and fixing to the screw portion 7a of the nut runner 10, and then the rotary arm 4 is slid. 6 Close and fix it so that it is at a right angle to 6, and turn the screw shaft 7 to rotate the nut runner 1
Move 0 to the front side of the machine and pull it to the front stop end, then turn the screw shaft 7 in the same direction and slide the slider 6
Retreats into the housing 5, and brings the vertical sealer 2 closer to the required close distance where good heat sealing of the front side of the product dropping cylinder 1 can be performed, and then the lock screw 8 is tightened to lock the movement of the slider 6. Then, the screw shaft 7 is turned in the opposite direction to push the nut runner 10 until it abuts against the rear stop end, and then the tightening tool 11 is tightened. With the above, the initial setting for bringing the vertical sealer 2 closer to the required close distance where the heat sealing of the front side of the product dropping cylinder 1 can be favorably performed is completed.

Next, the rotary arm 4 is opened to open the product dropping cylinder 1.
When the operator wants to inspect the machine or adjust the web w by opening the front side of the lock screw 8, the lock screw 8 is loosened. Then, the slider 6 can move in the pull-out direction until the nut runner 10 contacts the front stop end. Therefore, the vertical sealer 2 is pulled away from the product dropping cylinder 1, and the vertical sealer 2
It can be ensured that the distance between the product dropping cylinder 1 and the product dropping cylinder 1 is larger than the width dimension of the edge of the web w. After that, the rotating arm 4
Allows the web w to rotate and open without disturbing.
When the rotating arm 4 is opened, the front side of the product dropping cylinder 1 is opened, so that the inside of the machine is checked and the web w is checked.
Can be wrapped so as to wrap it, or the edges of the web w can be aligned so as to form a palm or envelope.

To make the vertical sealer 2 ready for heat sealing again, since the initial setting has already been performed, the rotating arm 4 is closed and fixed at a right angle to the slider 6, and the nut runner 10 is attached. The slider 6 is pushed into the housing 5 until it comes into contact with the front stop end, and at this time, the vertical sealer 2 allows the edges of the web w in the palmed state to enter between the pair of heat seal bars, or The web w is guided so that the sealer 2 lightly presses the overlapping state of the web w. In this way, when the slider 6 is pushed into the housing 5, the distance between the vertical sealer 2 and the product dropping cylinder 1 becomes close to the required close distance at which good heat sealing can be performed.

If the initial setting is not appropriate because the distance between the vertical sealer 2 and the product dropping cylinder 1 is too small, the tightening tool 11 is loosened and the screw shaft 7 is rotated in the direction in which the nut runner 10 retracts. Since the nut runner 10 cannot be retracted, the slider 6 is pulled out. Therefore, the screw shaft 7 can be rotated by a small angle in the same direction to adjust the distance between the vertical sealer 2 and the product dropping cylinder 1 by a small size. If the tightening tool 11 is tightened, the initial setting can be corrected.

If the distance between the vertical sealer 2 and the product dropping cylinder 1 is large and the initial setting is not appropriate, the tightening tool 11 is loosened and the screw shaft 7 is slightly moved in the direction in which the nut runner 10 moves forward. Slider 6 after rotating the angle
When a pushing force is applied to the slider, the slider 6 is pushed and moved by the amount that the nut runner 10 is pulled toward the front by a small dimension, and the distance between the vertical sealer 2 and the product dropping cylinder 1 is adjusted to a small dimension. It is possible to correct the initial setting by tightening the tightening tool 11.

The tightening tool 11 may be composed of a half nut housed inside the nut runner 10 and a bolt for pressing the half nut against the screw shaft 7.

[0019]

As described above, in the vertical bag-making filling and packaging machine of the present invention, in the housing, at the rear portion of the screw shaft that is passed through the slider that pivotally supports the rotating arm that supports the vertical sealer. A nut runner, which is constrained to allow a constant stroke, is screwed together, and a tightening tool that tightens the nut runner against the screw shaft is provided so that it can be operated from the outside of the housing. It is possible to move the heat seal bar to the position during packaging operation and the retracted position quickly even if the width dimension of the edge of the web is large as in the case of packaging with a zipper,
Also, once the screw shaft is turned as the initial setting to secure the space between the product drop cylinder and the heat seal bar, the space is maintained and the workability is maintained even if the rotating arm is swung or the slider is moved. It has an excellent effect that can be greatly improved.

[Brief description of drawings]

FIG. 1 is a schematic horizontal cross-sectional view of essential parts of a vertical bag-making filling and packaging machine of the present invention during non-packing operation.

FIG. 2 is a schematic front view of a main part of the vertical bag-making filling and packaging machine.

FIG. 3 is a schematic horizontal cross-sectional view of main parts of the above vertical bag-making filling and packaging machine during a packaging operation.

FIG. 4 is a schematic horizontal cross-sectional view of a main part of a conventional vertical bag-making filling and packaging machine during a packaging operation.

[Explanation of symbols]

 w Web 1 Product dropping cylinder 2 Vertical sealer 4 Rotating arm 5 Housing 6 Slider 7 Screw shaft 7a Screw part 10 Nut runner 11 Tightening tool 12 Slit

Claims (1)

[Claims] 1. A product dropping tube for guiding a web to be wrapped so as to be wrapped in a continuous web in a belt shape, which is a paper to be wrapped, which is bent in a cylindrical shape and is guided downward from above, and can be opened horizontally at the front side of the machine. It has a vertical sealer that is provided at the rotating end of the rotating arm and vertically seals the web edges that overlap each other or overlaps in the front side of the product dropping cylinder, and the vertically sealed packaging cylinder is fed downward. Along with dropping and filling a predetermined amount of the object to be packaged through the product filling cylinder into the packaging cylinder, it is configured to laterally seal the required lower part and the required upper part of the packaged object of the packaging cylinder, respectively. The rotating arm is pivotally supported on a front end of a slider that is housed in a housing and can be locked by the slide so that the slider can be slid in the front-rear direction of the machine. According to the above, in the vertical bag-making filling and packaging machine configured so that the slider can be slid in the front-rear direction of the machine, the nut runner is provided in the screw portion formed in the portion of the screw shaft extending rearward from the slider. While being screwed, a tightening tool for tightening and fixing the nut runner to the screw portion is configured to be operable from the outside of the housing through a slit attached to the nut runner and opened in the housing, The vertical bag-making filling and packaging machine, wherein the nut runner is constrained so as to be movable within the housing by a predetermined stroke when the slider is pulled out.