JPH10249960A - Method and apparatus for manufacture of refuse bag made of synthetic resin film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture highly efficiently automatically a refuse bag by a method wherein a continuous cutting line is formed parallel to a feed direction at a part to be a refuse charge opening, a discontinuous cutting line is formed in a crossing direction, and an area surrounded by the cutting line is moored and pulled out in a downstream direction from the moored part. SOLUTION: Continuos cutting lines c1 to c4 are processed parallel to a feed direction of a tube, and discontinuous cutting lines c5 to c7 are processed in a crossing direction. The middle between two lines of sealing parts s1, s2 formed to an upstream side and a downstream side from ends of the continuous cutting lines c1, c4, is cut over all length in a cassette tube width direction. An area B surrounded with the cutting line C and a cutting line ct comes to be of a moored state, and a semi-product refuse bag A3 is sent to the downstream direction. A continuous part between the discontinuous cutting lines c5 to c7 formed in a width direction of the semi-product rubber bag A3 is separated by cutting, and an area B surrounded with the cutting line C and the cutting line ct is left under a state wherein piercing pins 60, 60 pierce the area B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a garbage bag made of a synthetic resin film, and more particularly to a garbage bag of a type having a tie piece on a side of an inlet.

[0002]

2. Description of the Related Art Garbage bags made of a synthetic resin film are indispensable for living and running a business. Generally, such a garbage bag has a structure in which a bottom portion is formed by heat sealing and cutting the lower edge of a tube made of a synthetic resin film having a required size, but is transported to an accumulation place or loaded on an accumulation vehicle. The following types of garbage bags have appeared in order to make it easier. The first type uses a tube in which gussets are formed on both sides in the width direction as shown in FIG. 21 (a), and a pair of protruding pieces g,
As shown in FIG. 2B, after the garbage is formed, the insertion port side can be tied up, and protrusions g ′, g ′ for handles are formed on both sides in the bag width direction to carry. It was made easier. The second type uses a flat tube without a gusset as shown in FIG. 22, and a pair of projecting pieces g, g for binding are formed on the charging port side of the bag formed thereby.

[0003] Any type of garbage bag G with tying projection
In this case, it is desired that the garbage bag is folded small one by one and is loaded in the outer bag in a fixed number, for example, about 5 to 10 sheets in order to facilitate handling.
However, the garbage bag G with the tying protruding piece has a large notch on the input port side due to the presence of the protruding pieces g, g and the protruding pieces g ′, g ′. When this is done, the remainder other than these protruding pieces g, g, g ', and g' will be generated as scum (excess pieces). However, since the scum is stiff and easy to carry static electricity, it is processed in a continuous line. It was difficult. That is, for example, when the air blowing method or the suction method is simply adopted, the reliability of the removal of debris is poor, and the debris scatters on the line or in the vicinity to deteriorate the environment or collects the dissipated debris. Work is required. Also,
The noise is intense, improving and deteriorating the surrounding environment.

[0004] For this reason, conventionally, it is necessary to heat seal the lower edge of the tube with the gusset to produce a conventional garbage bag having a bottom portion formed thereon. ), And set it on the punching machine outside the line to set the protruding pieces g, g
And / or a method of punching so that g ′, g ′ remains. For this reason, a lot of labor and man-hours are required for the production, and moreover, a large number of stacked garbage bags with tying protruding pieces are stacked and folded and loaded into the outer bag. There was a problem.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and a first object of the present invention is to convert a single-leaf tube made of a synthetic resin film into a tube with or without a gusset. It is an object of the present invention to provide a method capable of automatically and efficiently manufacturing a garbage bag with a tying protruding piece that can be taken out and wrapped. A second object of the present invention is to provide a device which is suitable for carrying out the above-mentioned invention, has a relatively simple structure and is compact.

[0006]

SUMMARY OF THE INVENTION In order to achieve the first object, the present invention provides a garbage bag having a gusset tube having a tying piece on the opening side from a gusset tube made of synthetic resin film. During the transfer of the tube with the gusset, as a first step, a direction parallel to the feed direction is set as a continuous cutting line at a predetermined portion to be a dust inlet of the tube with a gusset, and a direction intersecting with the feed direction is set as a discontinuous cutting line. A cutting line having a predetermined shape in a plane is formed, and as a second step, upstream and downstream ends of the cutting line between the two-line heat seals are heat-sealed before and after the upstream end of the cutting line over the entire width of the gusseted tube. The entire width of the gusseted tube is cut along the gusset, and as a third step, the region surrounded by the cutting line of the gusseted tube is moored, and the gusset downstream of the mooring portion is moored. By pulling the tube (semi-finished product garbage bag) in the downstream direction, the discontinuous cutting line is forcibly and completely cut off, and the area surrounded by the cutting line is retained to form a garbage bag with a pair of projections. It is configured to be forwarded. (Claim 1) In this case, the cutting line has a plane W shape or a vertical E shape, and among the continuous cutting lines parallel to the feeding direction, the outermost continuous cutting line in the bag width direction is smaller than the folded line of the gusset. It is preferred that it be applied to be located on the outside. The present invention also provides a garbage bag having a gusset-free synthetic resin film tube and a garbage bag having a tying piece on the opening side during the transfer of the tube. To a predetermined portion to be formed, a cutting line having a predetermined plane shape having a direction parallel to the feeding direction as a continuous cutting line and a direction intersecting with the feeding direction as a discontinuous cutting line is applied, as a second step,
Heat sealing the upstream side of the cutting line over the entire width of the tube to form a bottom for the next bag and cutting the entire width of the tube along the upstream end of the cutting line; The pin is moored in the area surrounded by the cutting line, and the tube (semi-product garbage bag) downstream from the mooring portion is pulled in the downstream direction to forcibly completely cut the discontinuous cutting line and cut the cutting line. The area surrounded by is retained, and is forwarded as a garbage bag having a pair of projecting pieces. (Claim 5)

Further, in order to achieve the second object, the present invention employs any one of the following four types of devices.
The first is a case where a tube with a gusset is used as a material. In this case, a cutting edge portion for continuous cutting in a direction parallel to a feeding direction is provided on a body for transferring a tube with a gusset made of a synthetic resin film. In the direction intersecting with the feed direction, a cutting line processing mechanism provided with a cutting tool as a cutting blade portion for discontinuous cutting is provided, and at a downstream position of the cutting line processing mechanism, a seal blade receiving table having a knife in the middle, A two-line seal cut mechanism having a pair of vertically movable seal blades having a guide groove for the knife in the middle,
In the vicinity of the line seal cut mechanism, a mooring mechanism having a piercing pin opposed to an area surrounded by the cutting line provided by the cutting line processing mechanism and a vertically movable pressing body for piercing the area to the piercing pin side is provided. On the fuselage downstream of the mooring mechanism, a forcible pulling force is applied to the gusseted tube (semi-finished garbage bag) in the downstream direction to cut off the area surrounded by the cutting line moored by the mooring mechanism. A configuration with a mechanism to add. (Claim 3) Secondly, when a tube with a gusset is used as a material, the mooring means is not a pin piercing method but a clamping method, and the cutting line processing mechanism is provided near a two-line seal cutting mechanism. A mooring mechanism having a receiving body facing the area surrounded by the applied cutting line and a vertically movable pressing body for holding the area b between the receiving base, and a body further downstream than the mooring mechanism On the upper side, there is provided a mechanism for applying a forced pulling force in a downstream direction to a tube with gussets (semi-finished garbage bag) in order to cut off a region surrounded by the cutting line moored by the mooring mechanism. A structure in which a mechanism for discharging the separated cutting residue is disposed between the mechanism for applying force and the mooring mechanism. (Claim 4) Thirdly, when a tube without a gusset is used as a material, the mooring means is of a pin piercing type, and is parallel to the feeding direction on a body for transferring a tube made of a synthetic resin film without a gusset. In a direction that is a continuous cutting edge, a cutting line processing mechanism provided with a cutting tool that is a discontinuous cutting edge in a direction intersecting the feed direction is provided, and at a downstream position of the cutting line processing mechanism, A piercing pin, which is provided with a sealing mechanism and a cutting mechanism, is located in the vicinity of the cutting mechanism, and faces a region surrounded by a cutting line provided by the cutting line processing mechanism, and is vertically movable to pierce the region toward the pin. Mooring mechanism with a strong pressing body,
A mechanism for applying a forced pulling force in the downstream direction to a tube (semi-finished product garbage bag) on an airframe downstream of the mooring mechanism so as to cut off a region surrounded by a cutting line moored by the mooring mechanism. Arranged with. (Claim 6) Fourth, when a tube without a gusset is used as a material, the mooring means is of a clamping type, and is surrounded by a cutting line formed by the cutting line processing mechanism near a cutting mechanism. And a mooring mechanism having a vertically movable pressing body for nipping the area between the mooring mechanism and a receiving table, and a cutting machine moored by the mooring mechanism on a body downstream of the mooring mechanism. In order to cut off the area surrounded by the line, a mechanism for applying a forcible pulling force to the tube (semi-finished product garbage bag) in the downstream direction is provided, and the mechanism for applying this pulling force and the mooring mechanism are separated. A configuration with a mechanism for discharging cut residue. (Claim 8) In any case, preferably, a bag folding device is continuously provided downstream of the mechanism for applying a forcible tensile force in the feed direction.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 9 show a first embodiment of the present invention, that is, a first embodiment of a garbage bag manufacturing apparatus and a manufacturing method when a tube made of a synthetic resin film with a gusset is used. 1 is a synthetic resin film garbage bag manufacturing apparatus according to the present invention, which has a machine body 1a constituting a feed line of a tube A with a gusset made of a synthetic resin film,
At or near the upstream end of the body 1a, there is provided a gantry 1b for supporting a raw material A 'in which a tube A with a gusset is wound in a coil shape. Here, the "tube A with gusset" is formed by forming the folded portions a, a so as to form a V shape inward on both sides in the width direction of the synthetic resin tube film as shown in FIGS. Means

Downstream of the gantry 1b, there is provided a pinch roller mechanism 1c for feeding out a length necessary for the tube feed pitch. On the machine body downstream of the pinch roller mechanism 1c, a tube A with a gusset is provided. A cutting line processing mechanism 3 for forming a pair of protruding pieces g, a contour of g, is provided in a region to be an input port. Downstream of the cutting line processing mechanism 3, a pitch feed mechanism 4 for feeding the gusseted tube A at a pitch is provided.
On the downstream side near the pitch feed mechanism 4, a two-line seal cut mechanism 5 for forming a bag bottom seal and separating the front and rear garbage bags, and a mechanism 6 for mooring the surplus portion (waste) of the projection piece are provided. They are arranged adjacently. Downstream of the mooring mechanism 6, a mechanism for cooperating with the mooring mechanism 6 to apply a pulling force to a gusseted tube (semi-finished garbage bag at this stage) other than the above-mentioned portion in order to cut off and cut off the projecting piece residue 7 are provided. Downstream of the pulling force applying mechanism 7, a folding device 2 for folding the obtained single-leaf garbage bag G with a binding projection at least once or more into a form suitable for packaging is connected. The folding device 2 may be an integrated device having a common body with the garbage bag manufacturing device 1.

The respective sections will be described in detail. The cutting line processing mechanism 3 is shown in FIG. 2 to FIG. 4, and a top plate 32 is provided on a column 31 standing at four corners of a base 30 mounted and fixed to the body 1a. Are fixed to each other, and a receiving base 33 having a width that is appropriately larger than the width W of the gusseted tube A is fixed to the base 30 of the frame.
The cradle 33 is made of an elastic material such as sponge or rubber. An actuator 34 is fixed to the top plate 33, and a mount base 35 is fixed to an operation part 340 of the actuator 34 so as to be able to move up and down with respect to the receiving base 33. As shown in FIG. 3 and FIG.
Compound cutting tool 36 with cutting blade portion 36b for discontinuous cutting
In the vicinity of the cutting blade 36, holding members 37, 37 for pressing the both sides in the width direction of the tube with a gusset against the receiving base 33 to prevent displacement are attached.

In this example, the cutting blade 36 has a generally W-shaped or E-shaped contour in its entirety, and the continuous cutting blade 36a is arranged in a direction parallel to the gusset tube feeding direction as shown in FIG. It is formed at four portions (the right and left rising lines and the inner rising line) of the W, and the cutting blade portion 36 for discontinuous cutting is formed.
b is 3 in the direction intersecting the feeding direction of the gusseted tube.
It is formed at a site (the base of each rising line portion of W).
As shown in FIG. 4A, the continuous cutting edge portion 36a has a shape in which peaks and valleys are continuous as viewed from the front, and the discontinuous cutting edge portion 36b has a shape of each valley as shown in FIG. A slit 360 having a required width is provided at the base.
Thus, a portion that has not been cut is left in the tube. The outermost portion in the tube width direction of the cutting blade portion 36a for continuous cutting is provided so as to be located outside the folding tip line of the gussets a, a of the gusseted tube as shown in FIGS. Is preferred. The cutting blade 36 is fixed by a mounting screw to a guide mount 350 of the same contour in which a region above the cutting blade is fixed to a mount base 35, and is mounted on a receiving base 33 as shown in FIG. A groove 330 into which the continuous cutting edge 36a and the discontinuous cutting edge 36b are inserted is formed. The holding members 37, 37 extend downward from the mount base 35 and have a bolt 371 having a pressing piece 370 attached to the lower end thereof;
The pressing piece 370 includes a compressible member 372 such as a coil spring or urethane interposed between the pressing piece 370 and the mount base 35.
0 is set so as to be located below the cutting edges of the continuous cutting edge portion 36a and the discontinuous cutting edge portion 36b in a normal state.

The pitch feed mechanism 4 is provided with the cutting line processing mechanism 3.
The gusseted tube A1 is used to send the gusseted tube A1 having been processed by the cutting line C to the downstream by one pitch (bag length) when the cutting blade 36 and the pressers 37, 37 rise. A pair of pinch rollers may be used to pinch the film from above and below. In this embodiment, however, as shown in FIG. Roller 41,
A belt type is used in which a plurality of endless spring belts 42 are wound around the two pairs of rollers. One of the pair of rollers 40, 40 is driven by a rotation drive mechanism 43 disposed below the body 1a.

As shown in FIGS. 1 and 5, the two-line seal cutting mechanism 5 is a tube A with a gusset that has been cut and processed.
1. A base 50 provided on the body 1a corresponding to the lower surface of the base 1
And two parallel seal blade pedestals 51a, 51 supported on the base plate 50 via elastic bodies 52, 52 so as to be able to float and sink.
b, and the seal blade receiving tables 51a and 51b are arranged so as to cross the entire width of the gusseted tube A1 in a relationship orthogonal to the transfer direction. A knife 53 is fixed between the seal blade receiving tables 51a and 51b, and the knife 53 is also orthogonal to the transfer direction so as to cross the entire width of the gusseted tube A1.
In this example, the heater H is built in the seal blade receiving tables 51a and 51b, and the knife 53 is heated by the heat transfer. Of course, even if the knife 53 itself has a built-in heater. Alternatively, a heater may be built in the base 50 and heated by the heat transfer.

A seal blade 54 having two parallel blade portions 540a and 540b, which form a pair with the two seal blade receiving bases 51a and 51b, is located on the upper surface side of the tube A1 with gusset. , The blades 540a, 54
A guide groove 541 that allows the knife 53 to enter is formed in an intermediate portion of Ob. The seal blade 54 may have a built-in heater H. The seal blade 54 is attached to the holder 5
5, the holder 55 is connected to a rotation drive mechanism 5 a provided at a lower portion of the body 1 via a connection rod 550 so that the holder 55 can be moved up and down. In the pitch feed mechanism 4, a line ct orthogonal to the end of the cutting line shown in FIG. 9A is located on the extension line of the knife 53 in the tube A <b> 1 with the gusset in which the cutting line C is inserted by the cutting line processing mechanism 3. Drive control is performed as follows. Therefore, the gusseted tube A1 cut at the previous stage is bottom-sealed by the blade portion 540a and the seal blade receiving base 51a, and the adjacent gusseted tube (already bottom-sealed) adjacent thereto is sealed by the blade portion 540b. The line ct orthogonal to the end of the cutting line is heat-sealed by the blade receiving table 51b, so that the semi-finished garbage bag A2 is obtained. In FIG. 9 (b), S1 is a bottom seal,
S2 is an inlet-side seal.

In this embodiment, as shown in FIGS. 1 and 5, the mooring mechanism 6 has a plurality of piercing pins 60, 60 having a sharp tip and erected on the base plate 50. The piercing pins 60, 60 are attached to the seal blade receiving bases 51, 5 respectively.
The length dimension is set so that it is located at a height level lower than the upper surface of the pedestal when 1 is at the floating position, and the half pitch-fed by the pitch feed mechanism 4 as described above. It is arranged so as to correspond to the region b of the product trash bag A2 surrounded by the cutting line C. The piercing pins 60, 60 are preferably suitably heated to ensure mooring, and in this embodiment the piercing pins 6
A hot pin is provided with a heater H at 0,60. Further, a pressing body 61 cooperating with the stab pins 60, 60 is located above the stab pins 60, 60. The pressing body 61 has a length in the width direction corresponding to at least a region b of the semi-finished product garbage bag A2 surrounded by the cutting line C, and has a through hole or a recess 61 that allows the piercing pins 60 to enter.
0, and the pressing body 61 is held by the holder 62, and the two-line seal cut mechanism 5 is operated by an arbitrary driving mechanism, so that the two-line seal cut mechanism 5 is operated with a slight delay. Is completed and the sealing blade 54
Is slightly raised, the pressing body 61 is activated and the cutting line C
Is pushed toward the piercing pins 60, 60, and is immediately driven up and down. As this drive mechanism, for example, a cam may be used. In this embodiment, a crank mechanism is used, and FIG.
, The holder 62 is connected via a connecting rod 620 to the rotation drive mechanism 5a provided at the lower part of the body 1a, and the connection rod 620 is driven to rotate with the connection rod 550 for the seal blade 54. The phase of the coupling position with respect to the mechanism 5a is shifted.

When the mooring mechanism 6 is actuated, the tension applying mechanism 7 applies tension to the semi-finished garbage bag A2 to completely cut the discontinuous cutting line portion, thereby completing the garbage bag G with the protruding pieces. This is for transferring to the folding device 2 downstream. However, when the gusseted tube A1 after the processing of the subsequent cutting line C and the bottom sealing process is advanced by one pitch by the pitch feed mechanism 4, a gap is formed on the line to allow the movement of the gusseted tube A1. There must be. Therefore, in this embodiment, the pinch rollers 70, 70 are formed by cutting off a required range of a normal cylinder so that a strong traction force can be obtained only at an initial stage, and thereafter, an intermittent feed function in which the pressing surface is separated from the line can be obtained. . In this example, the shape is fan-shaped or cam-shaped, but is not limited to this. This pinch roller 7
5, gears 0, 70 have gears 71, 71 meshing with each other at the ends of the rotating shafts 700, 700.
Has a rotating body 72 coaxially with the driving mechanism 7.
3 for example, driven by a rotary clutch or a servomotor. Although the folding device 2 is optional, in this embodiment, a draw-in port 200 is provided in the tray 20 of the garbage bag G with protrusions transferred by the pulling force applying mechanism 7, and a V-shaped path is formed below the draw-in port 200. A pull-in belt roller 21 composed of two pairs of rollers and an endless belt is disposed so that a push plate 22 that can be inserted into and removed from a V-shaped path is disposed on a central extension line of the pull-in port 200. Although not shown, the terminal of the V-shaped path is provided with a second folding means so as to be orthogonal thereto, and further with a third folding means so as to be orthogonal thereto, and is provided downstream of the final folding means. , Garbage bag G with protruding pieces folded one by one
A means for filling the outer bag E with a plurality of sheets is provided.

Since the seal blade 54 only needs to be substantially a block, even if the two parallel blade portions 540, 540 are separated as a plate and assembled so that they overlap or come very close to each other. Good. The mooring mechanism 6
Is a fixed amount of debris B (cut line C
In order to facilitate the removal operation when the area surrounded by the circle is separated from the garbage bag main body), although not shown, the base plate 5 separated from the base plate 50 of the two-line seal cut mechanism 5 is not shown.
0 and is preferably adapted to be able to move laterally. Further, in the embodiment, the tensile force applying mechanism 7 is disposed relatively close to the mooring mechanism 6, but is not limited thereto, and may be disposed further downstream. Further, the pulling force applying mechanism 7 is not limited to the rotary type, and may be a retractable robot type having a gripper that can be opened and closed at the tip, or a pinch roller that presses the bag body on the downstream side and an upstream side. It may be a sweeping type in which a tilting hitting element is provided on the side.

Next, the method of the present invention will be described with reference to the above-described apparatus. The gusseted tube A drawn from the raw material A 'is introduced onto the receiving table 33 of the cutting line processing mechanism 3 and passed therethrough. It is extended forward on the body 1a, passed between the belts of the pitch feed mechanism 4 and clamped, and is positioned so that one pitch, that is, the bag body length or more exceeds the two-line seal cut mechanism 5. This is the initial position. In this state, the cutting line processing mechanism 3 operates to start the bag making operation. In the cutting line processing mechanism 3, as shown in FIG.
7 is in the raised standby position, but when the actuator 34 is operated, the mount base 35 is lowered, and as shown in FIG. 2 (b), the holding members 37, 37 are moved to both sides in the width direction of the tube A with the gusset. In contact with the cradle 3
3 to be in a fixed state. Subsequently, the cutting tool 36 comes into contact with the gusseted tube A, the continuous cutting edge 36a and the discontinuous cutting edge 36b penetrate the gusseted tube A, and the groove 330 of the receiving base 33 has a predetermined depth. I will rush. As a result, a cutting line C having a plane W or a vertical E contour as a whole is formed on the gusseted tube A, but the state of the cutting line is not entirely constant, as shown in FIGS. 8 and 9A. Then, four continuous cutting lines c1, c2, c3, and c4 in a direction parallel to the tube feeding direction are processed by the continuous cutting edge portion 36a having a continuous mountain and valley. However, in the direction intersecting with the tube feeding direction, the cutting edge portion 36b for discontinuous cutting has the slit 360, and cutting is not performed at this portion. Continuous cutting line c5
c6 and c7 are processed. The continuous cutting edge 36
The outermost portion of a is located outside the folding line of the gussets a and a. For this reason, among the cutting lines C, the continuous cutting lines c1 and c4 are formed outside the folding lines of the gussets a and a. Upon completion of this processing, the actuator 34 is operated, and the cutting blade 36 and the holding members 37, 3
7 is returned to the standby position.

Next, in this state, the pitch feed mechanism 4 is operated, and the gusseted tube A1 with the cutting line is transferred forward. This is the state of FIG. 6A, in which case,
The upstream end of the cutting line C, that is, the end of the continuous cutting lines c1 and c4 is connected to two parallel blade portions 540 of the two-line seal cutting mechanism 5.
The feed length is controlled so as to be located between a and 540b. At this time, the pinch roller 7 of the tension applying mechanism 7
Reference numerals 0 and 70 denote a position where the pressing surface is separated from the phase line, and therefore, the transfer of the gusseted tube A1 with the cutting line by the pitch feed mechanism 4 is not hindered at all. Next, as shown in FIG. 6B, the cutting line processing mechanisms 3 and 2
The line seal cutting mechanism 5 is operated. Cutting line processing mechanism 3
Then, the actuator 34 descends and moves up and down, so that the cutting line C, which is a combination of the continuous cutting line and the discontinuous cutting line, is formed on the gusseted tube A in a portion corresponding to the input area of the next garbage bag as described above. Is done. At this time, in the downstream two-line seal cut mechanism 5, since the connecting rod 550 is moved by the rotation of the rotation drive mechanism 5a, the seal blade 54 descends and the two parallel blade portions 540a and 540b move the tube A2 with the gusset. The sealing blade supports 51a and 51b are linearly and strongly contacted.

Since the seal blade receiving tables 51a and 51b are heated by the hot platen 50, the upstream end of the cutting line C, that is, the end of the continuous cutting lines c1 and c4 in the width direction of the preceding tube A1 with gusset. Two parallel heat seal portions s1 and s2 are formed on the downstream side of the cutting line C, that is, on the downstream side of the ends of the continuous cutting lines c1 and c4. At the same time, the knives 53 project and enter the guide grooves 541 of the seal blade 54 due to the sinking of the seal blade receiving tables 51a and 51b, so that the middle of the two heat seal portions s1 and s2 extends over the entire length in the gusset tube width direction. Be cut off. ct is the cutting line. This is the state of FIG. 9B, and the bag bottom with the gusseted tube A1 to be described later in this step is formed by the heat seal portion s1. The leading end of the gusseted tube A2 is cut at the opening end to form a semi-finished garbage bag A3. At this stage, the region b surrounded by the cutting line C is defined by three discontinuous cutting lines c5, c6, and c7. It is connected to a tube with a gusset.

As described above, when the knife 53 is operated and the seal blade 54 reaches the timing at which the seal blade 54 starts to rise, the pressing body 61 connected to the rotary drive mechanism 5a via the connecting rod 620 descends. At substantially the same time, the pulling force applying mechanism 7 starts operating. This is the state shown in FIG. When the pressing body 61 is lowered, the opening side of the semi-finished garbage bag A3 including the debris region b surrounded by the cutting line C and the cutting line ct is forcibly moved downward. Since the piercing pins 60, 60 are established below the pressing body 61, the residue area b surrounded by the cutting line C and the cutting line ct is instantaneously generated by the sharp projections of the piercing pins 60, 60 and heat. The piercing pins 60 are pierced deeply. Thus, the residue region b surrounded by the cutting line C and the cutting line ct is in a mooring state. Upstream from this, the pinch rollers 70, 70 of the pulling force applying mechanism 7 have started to rotate, whereby the semi-finished garbage bag A3 is clamped from above and below by the pressure surfaces of the pinch rollers 70, 70, and the downstream direction. Sent to.

This feed acts on a surplus area surrounded by the cutting line C and the cutting line ct.
Because the movement is blocked at 0,60, the semi-finished garbage bag A
3, discontinuous cutting lines c5, c6, formed in the width direction
Separation force is applied intensively from front and rear only to a few connection portions between the cutting lines c7, whereby the connection portions are separated and cut, and a residue region B surrounded by the cutting line C and the cutting line ct.
Remains pierced by the piercing pins 60, 60. The slit 360 of the cutting blade portion 36b for discontinuous cutting is used.
There is no limitation on the number or length, and the point is that it can be sent without being inadvertently cut at the pitch feed stage, and has the strength to be cut by the mooring mechanism 6 and the pulling force applying mechanism 7. Just do it.

As described above, when the tensile force applying mechanism 7 is operated to separate the waste area B surrounded by the cutting line c and the fusing line ct, the pressing body 61 is raised, and this is the state shown in FIG.
9A and FIG. 9C. Thus, the bottom seal s1 and a pair of protruding pieces g, g at the center and a ring shape on both sides in the width direction (because two films are overlapped and connected by a seal portion s2), a protrusion suitable for a handle. A garbage bag G with a tying projection provided with g ′, g ′ is completed. The garbage bag G with the binding protrusions is provided with a pulling force applying mechanism 7.
Is sent to the folding mechanism 2 by the intermittent feed of the pinch rollers 70, 70, and when it is sent to a fixed position, the pushing plate 22 is actuated to bend the intermediate position of the trash bag G with the binding projection to form a V-shaped path. The dust bag G with the binding protrusion is folded into two by the operation of the retracting belt roller 21. This is shown in FIG.
When it is confirmed that the garbage bag G with the binding protrusion has been pulled into the pull-in belt roller 21 as shown in FIG.
As shown in (c), the pitch feed mechanism 4 starts operating, and the subsequent gusseted tube A1 after cutting line processing is transferred downstream. This returns to the state of FIG. Hereinafter, by repeating the above-described process, a single-leaf trash bag G with a binding protruding piece is continuously manufactured from the tube A with a gusset, and the preceding trash bag G with a binding protruding piece is a second or non-illustrated garbage bag G. When the third folding means is sequentially operated, the third folding means is folded several times to be reduced as shown in FIG. 9D, and a plurality of the sheets are filled in the outer bag E to complete the product.

FIG. 10 shows a second embodiment of the first aspect. In this embodiment, the cutting line C has a U-shaped contour, and a ring-shaped projection (for overlapping two films connected by a seal portion s2) on both sides in the width direction is used for binding and handle. 9 shows a case of obtaining a garbage bag G with a binding protruding piece provided with g. In this case, the cutting blade tool 36 of the cutting line processing mechanism 3 forms a substantially U-shaped contour as a whole, and the continuous cutting blade portion 36a has two portions in the direction parallel to the gusset tube feeding direction (right and left of U). Rising line portion),
A cutting edge portion 36b for discontinuous cutting is used which is formed at one portion (the bottom portion of the U) in a direction intersecting the feeding direction of the tube with the gusset. Therefore, the cutting line C of the tube A with the gusset has a continuous cutting edge portion 3 having a continuous mountain and valley.
By 6a, two continuous cutting lines c1 and c4 in a direction parallel to the tube feeding direction are processed. However, in the direction intersecting with the tube feeding direction, the cutting edge portion 36b for discontinuous cutting has the slit 360, and cutting is not performed at this portion. The continuous cutting line c5 is processed. The other parts are the same as those of the first embodiment, and the description is omitted.

FIGS. 11 and 12 show a second embodiment of the present invention, that is, an embodiment of a garbage bag manufacturing apparatus and a manufacturing method using a synthetic resin film tube having no gusset. Also in this case, a cutting line processing mechanism for forming a pair of protruding pieces g, g in a region to be an input port of the tube A, on a body downstream of a pinch roller mechanism (not shown). 3 are provided. And
This is the same as the first embodiment in that a pitch feed mechanism 4 for feeding the tube A at a pitch is provided downstream of the cutting line processing mechanism 3. However, in the second embodiment, not a two-line seal cut mechanism but a seal mechanism 5a for forming a bag bottom seal and a cut mechanism 5b for separating front and rear garbage bags downstream of the pitch feed mechanism 4. Is provided. In the vicinity of the cutting mechanism 5b, there is arranged a mooring mechanism 6 for allowing the surplus portion forming surplus portion to remain in the fuselage, and at the downstream of the mooring mechanism 6, cooperates therewith to separate the protruding piece forming residue. A mechanism 7 is provided for applying a tensile force to tubes other than the above-mentioned residue (semi-finished garbage bags at this stage) for cutting. Downstream of the pulling force applying mechanism 7, a folding device 2 for folding the obtained single-leaf garbage bag G with a binding projection at least once or more into a form suitable for packaging is connected.

The cutting line processing mechanism 3 has the same configuration as the second embodiment of the first aspect as a whole, and the cutting blade 36 has a generally U-shaped (or W-shaped) contour as a whole.
The continuous cutting edge portion 36a is formed at two portions (in this example, right and left rising lines of U) in a direction parallel to the tube feed direction without the gusset, and the discontinuous cutting edge portion 36b is formed in the tube feed direction. One site in the crossing direction (U in this example
Used at the bottom). Therefore, as for the cutting line C of the tube A, two continuous cutting lines c1 and c4 in a direction parallel to the tube feeding direction are processed by the continuous cutting blade portion 36a having a continuous mountain and valley. But,
In the direction intersecting with the tube feeding direction, the cutting blade portion 36b for discontinuous cutting has a slit 360, and cutting is not performed at this portion. The line c5 is processed.
Although the pitch feed mechanism 4 is shown in a simplified manner, the first
The same configuration as in the embodiment is adopted. Further, the seal mechanism 5a and the cut mechanism 5b employ a structure used at the time of manufacturing a known garbage bag. In this example, the seal mechanism 5a is composed of a pair of a seal receiving base 51a and a seal blade 54, and the cutting mechanism 5b is of a guillotine cut type using a lower blade 53a and an upper blade 53b.

The mooring mechanism 6 has a plurality of piercing pins 60, 60 having a sharp tip and erected on the base 50.
The piercing pins 60, 60 are attached to the seal blade receiving table 51.
The length dimension is set so as to be located at a height level lower than the upper surface of the semi-finished garbage bag A2 pitch-fed by the pitch feed mechanism 4 as described above. It is arranged so as to correspond to the enclosed area b.
The stab pins 60, 60 are preferably hot pins to ensure mooring. The piercing pin 6
Above 0 and 60, a pressing body 61 cooperating therewith is located. This pressing body 61 is at least a semi-finished garbage bag A2.
Has a length in the width direction corresponding to the region b surrounded by the cutting line C, and has a through hole or a concave portion 610 that allows the piercing pins 60 to enter. The pressing body 61 is held by a holder 62, and the cutting mechanism 5 is driven by an arbitrary driving mechanism.
b When the upper blade 53b reaches the bottom dead center or when the upper blade 53b reaches the bottom dead center
It is activated when b rises a little, pushes the area b surrounded by the cutting line C toward the piercing pins 60, 60, and is driven up and down as soon as it rises.
The configuration of the tensile force applying mechanism 7 is the same as in the first embodiment.

In the second embodiment, the cutting line processing mechanism 3 is operated to form a cutting line C having a generally U-shaped contour on the tube A. The cutting line is shown in FIG. As shown in FIG. 11, two continuous cutting lines c1 and c4 in a direction parallel to the tube feeding direction are processed by the continuous cutting blade portion 36a having a continuous mountain and valley. However, in the direction intersecting with the tube feeding direction, since the discontinuous cutting blade portion 36b has the slit 360 and cutting is not performed at this portion, the direction intersecting with the tube feeding direction is the two continuous directions. A discontinuous cutting line c5 connecting the cutting lines c1 and c4 is processed. Upon completion of this processing, the actuator 34 operates to return the cutting blade 36 and the holding members 37, 37 to the standby position.

Next, in this state, the pitch feed mechanism 4 is operated, and the tube A1 with the cutting line as described above is transferred forward. In this case, the feed length is controlled such that the upstream end of the cutting line C, that is, the end of the continuous cutting lines c1 and c4 is located at the cutting mechanism 5b. At this time, the pinch rollers 70, 70 of the pulling force applying mechanism 7 are located at positions where the pressing surfaces are separated from the phase line.
Transfer of the tube A1 with the cutting line is not hindered at all. Next, the cutting line processing mechanism 3, the sealing mechanism 5a and the cutting mechanism 5b are operated. In the cutting line processing mechanism 3, the actuator 34 descends and moves up and down, so that the cutting line in which the continuous cutting line and the discontinuous cutting line are combined in the tube A at a portion corresponding to the input area of the next trash bag as described above. C is processed. At this time, at the downstream, the seal blade 54 descends to make the tube A2 linearly contact the seal blade receiving base 51 linearly.

Since the seal blade receiving table 51 is heated by the heater, a bottom seal portion s1 is formed in the width direction of the tube A1 on the upstream side of the cutting line C, that is, on the upstream side of the ends of the continuous cutting lines c1 and c4. Is done. At the same time, the cutting blade 53
Since a is lowered, the entire length in the tube width direction corresponding to the end of the bottom seal portion s1, that is, the end of the continuous cutting lines c1 and c4 is cut. In the tube A1 to be described later in this step, the bag bottom is formed by the heat seal portion s1. In addition, the leading end of the tube A2 is cut so that the semi-finished garbage bag A3 is cut off.
However, at this stage, the region b surrounded by the cutting line C is connected to the tube by the discontinuous cutting line c5.

As described above, when the cutting blade 53b operates and reaches the timing to start ascending, the pressing body 61 descends,
At substantially the same time, the pulling force applying mechanism 7 starts operating. When the pressing body 61 descends, the opening side of the semi-finished garbage bag A3 including the debris area b surrounded by the cutting line C and the cutting line ct is forcibly moved downward by pressing, and the piercing pins 60, It is instantaneously penetrated deeply by the sharp projections of 60 and heat. Thus, the residue region b surrounded by the cutting line C and the cutting line ct is in a mooring state. Further, on the upstream side, the pinch rollers 70 and 7 of the pulling force applying mechanism 7 are provided.
0 has started to rotate, and this is the result of the semi-finished garbage bag A3.
Is pinched from above and below by the pinching rollers 70, 70 and sent downstream.

This feed also acts on a surplus area surrounded by the cutting line C and the cutting line ct.
Because the movement is blocked at 0,60, the semi-finished garbage bag A
3, a separating force is intensively applied from the front and rear to only the connecting portion of the discontinuous cutting line c5 formed in the width direction of the cutting line 3, whereby the connecting portion is separated and cut, and the cutting line C and the cutting line ct are cut.
The residue area B enclosed by the stab remains in a state of being pierced by the piercing pins 60, 60. As described above, when the tensile force applying mechanism 7 is operated to separate the residue area B surrounded by the cutting line c and the cutting line ct, the pressing body 61 is raised,
Thus, the bottom seal s1 and a pair of protrusions g, g on both sides in the width direction.
A garbage bag G with a tying protruding piece provided with is provided. The dust bag G with the binding protrusion is sent to the folding mechanism 2 by intermittent feeding of the pinch rollers 70 of the pulling force applying mechanism 7, and is folded one by one.

In any of the embodiments of the present invention, a continuous cutting line parallel to the tube feed direction and a tube are provided between the pitch feeds for the tube A made of synthetic resin film with or without gusset as a first step. In order to process the cutting line C consisting of discontinuous cutting lines in the direction intersecting with the feeding direction, the unnecessary parts at the time of bag completion do not hang down with the flapper at the next pitch feeding, or are rolled up and rolled in the middle. The paper can be fed stably without winding around the endless gather-up belt 42 and the endless gather-up belt 42. In addition, even if the front and rear of the tube (the bottom side of the succeeding one and the inlet side of the preceding one) are cut with a knife in the second stage in a relationship orthogonal to the end of the cutting line C, the region surrounded by the cutting line C b is kept connected to the semi-finished product bag by the discontinuous cutting line. Therefore, the next mooring step using the piercing pins 60 and 60 and the pressing body 61 can be performed stably and reliably. Then, the cutting line C and the cutting line ct
In the state where the residue area B surrounded by the stakes is moored by the stab pins 60, 60, the heat of the stab pins 60, 60 and the pressing from above due to the stab of the subsequent residue area lead to the base of the stab pins 60, 60 sequentially. As described above, it is lowered and partly adhered to form a block-like laminate, so that collection is easy.

FIGS. 13 to 20 show a third embodiment of the garbage bag manufacturing apparatus and method according to the present invention. The feature of this embodiment is that the mooring of the scum region B surrounded by the cutting line C is performed not by the piercing method using the combination of the piercing pin and the pressing body but by the pinching method. As an example of this embodiment, the drawing shows a case where a synthetic resin film tube with a gusset is used, but it is needless to say that the present invention is also applied to a case where a synthetic resin film tube without a gusset is used.
In this embodiment, a plurality of receivers 60 ′, 60 ′ facing the lower surface of the area b surrounded by the cutting line C are provided as the mooring mechanism 6 near the two-line seal cut mechanism 5. Each of the receivers 60 ', 60' has an elastic surface such as rubber on the surface which comes into contact with the tube. Above the region b surrounded by the cutting line C, there are pressing bodies 61 ', 61' which can move up and down in a relationship facing the receiving bodies 60 ', 60'. A crank mechanism or the like is used for the lifting means of the pressing bodies 61 ', 61', as in the case of the piercing method. In the downstream of the mooring mechanism 6 relatively close to the mooring mechanism 6, the coagulation action of the mooring mechanism 6 and the mechanism 7 for applying a pulling force causes the dust B separated and cut from the semi-finished garbage bag A3.
Is provided below the transport line. Although the vacuum discharging mechanism 8 may be of a vacuum type, it is not preferable because it may generate noise or affect the conveyance of the product trash bag G. Therefore, in this embodiment, a method of mechanically moving the residue B downward is adopted. That is, a pair of rotatable discharge rollers 80, 80 are arranged on the lower surface side of the tube transfer line, and the discharge rollers 8 are provided above the tube transfer line.
Push blade 81 that can move up and down between contact surfaces 0, 80
Is disposed below the discharge rollers 80, 80. A dish-shaped guide 84 is provided directly above the discharge rollers 80, 80. The lifting means 83 of the pushing blade 81 is optional, and may be a fluid pressure cylinder or the like, but a cam mechanism or a crank mechanism is simply used. When the crank mechanism is adopted, the pressing body 61 ',
Both 61 ′ may be connected to the rotation drive mechanism of the two-line seal cut mechanism 5 by a rod. The scrap collecting means 82 may be a box or a chute led out of the machine. In some cases, the scrap collecting means 82 may be connected to a suction means at the bottom. Since the other mechanisms are the same as those in the first embodiment, the same portions are denoted by the same reference numerals and description thereof will be omitted.

In this embodiment, the gusseted tube A1 with the cutting line is transferred forward. This is FIG.
In this case, the feed length is set so that the upstream end of the cutting line C, that is, the end of the continuous cutting line is located between the two parallel blade portions 540a and 540b of the two-line seal cutting mechanism 5. Controlled. At this time, the pinch rollers 70, 70 of the pulling force applying mechanism 7 have the pressing surfaces separated from the phase line, and therefore, the transfer of the gusseted tube A1 with the cutting line by the pitch feed mechanism 4 is not hindered at all. Next, as shown in FIG.
And the two-line seal cutting mechanism 5 is operated, whereby the cutting line C, which is a combination of the continuous cutting line and the discontinuous cutting line, is formed in the gusseted tube A at a portion corresponding to the input area of the next garbage bag as described above. Processed. At this time, in the downstream two-line seal cutting mechanism 5, the seal blade 54 descends and the two parallel blade portions 540a and 540b are connected to the gusseted tube A2.
To the seal blade receiving tables 51a and 51b in a linear manner. Thereby, in the width direction of the tube A2 with the gusset, the upstream end of the cutting line C, that is, the upstream side from the ends of the continuous cutting lines c1, c4, and the downstream side of the cutting line C, that is, the continuous cutting line c1,
downstream of the end of c4, two parallel heat sealing portions s
1, s2 are formed. At the same time, the knife 53 projects and enters the guide groove 541 of the seal blade 54,
The middle of the heat seal portions s1 and s2 is cut over the entire length of the gusset tube in the width direction.

The gusseted tube A1 to be described later in this step has the bag bottom formed by the heat seal portion s1. The opening end of the preceding tube with gusset A2 is cut into a semi-finished garbage bag A3. At this stage, the region b surrounded by the cutting line C has discontinuous cutting lines c5, c6, c6.
It is connected to the gusseted tube by c7.
As described above, at the same time as or slightly after the timing when the seal blade 54 descends, the pressing members 61 ′, 6
1 'is lowered, the pulling force applying mechanism 7 is activated at the same time as the sealing blade starts to rise, and the debris discharging mechanism 8 is activated at the same time as the cutting of the debris B is completed. This is the state of FIG.
When the pressing bodies 61 ', 61' are lowered, the opening side of the semi-finished garbage bag A3 including the debris area b surrounded by the cutting line C and the cutting line ct is forcibly moved downward. A pressing body 6 is provided below the residue area b surrounded by the cutting line C and the cutting line ct.
Since the receivers 60 ′ and 60 ′ forming a pair with 1 ′ and 61 ′ are located, the residue region b surrounded by the cutting line C and the cutting line ct
Is pressed from above and below by the pressing bodies 61 ', 61' and the receiving bodies 60 ', 60'. Thus, the residue region b surrounded by the cutting line C and the cutting line ct is in a mooring state. Further, downstream of this, the pinch rollers 70, 70 of the pulling force applying mechanism 7 have started to rotate, whereby the semi-finished garbage bag A3 is nipped from above and below by the pressure surfaces of the pinch rollers 70, 70, and the downstream direction. Sent to.

This feed also acts on the surplus area surrounded by the cutting line C and the cutting line ct, but since this area is prevented from moving by the mooring mechanism 6, it is formed in the width direction of the semi-finished garbage bag A3. Separating force is applied intensively from the front and rear to only some of the connecting portions between the cutting lines of the discontinuous cutting lines c5, c6, and c7, whereby the connecting portions are separated and cut. The residue area B surrounded by the cutting line ct is separated as a cut piece. As described above, when the pulling force applying mechanism 7 operates to separate the scum region B surrounded by the cutting line c and the fusing line ct, the pressing members 61 and 61 'are raised as shown in FIG. Thus, the bottom seal s1 and the pair of projections g,
g at the center and a ring-shaped tie on both sides in the width direction (because the two films are overlapped by a seal s2) and having protrusions g 'and g' suitable for the handle. The garbage bag G with projections is completed. FIG. 19 shows the pinch roller 70 of the pulling force applying mechanism 7,
When the sheet 70 is sent to the folding mechanism 2 by intermittent feeding, and is sent to a fixed position, the pushing plate 22 is actuated and FIG.
As shown at 0, the intermediate position of the garbage bag G with the binding protrusion is bent and pushed into the retracting belt roller 21 forming a V-shaped path. It is folded in two. On the other hand, during the operation of the pulling force applying mechanism 7, the pushing blade 81 of the scrap discharging mechanism 8 is at the end of descending as shown in FIG.
Is pushed into the rotating discharge rollers 80, 80 and is folded and sent to the scrap collecting means 82. When the pushing blade 81 of the scrap discharging mechanism 8 is lifted and it is confirmed that the dust bag G with the binding protrusion has been drawn into the pull-in belt roller 21, the pitch feed mechanism 4 starts operating as shown in FIG. Tube A with gusset after cutting line processing
1 is transferred downstream.

Also in this third embodiment, between each pitch feed, a continuous cutting line parallel to the tube feed direction and a tube feed direction are applied to the tube A made of synthetic resin film with or without gusset as a first step. In order to process a cutting line C consisting of a discontinuous cutting line in the direction intersecting with the roller 40, the unnecessary portion at the time of completion of the bag does not hang down with the flapping edge at the next pitch feed, or the rolled up roller 40, The paper can be fed stably without winding around the endless gather up belt 41 or the endless gather up belt 42. As a second step, even if the front and rear of the tube (the bottom side of the succeeding one and the inlet side of the preceding one) are cut with a knife in a relationship orthogonal to the end of the cutting line C, the cutting line C
The region b surrounded by is kept connected to the semi-finished product bag by the discontinuous cutting line. Therefore, the next pressing body 6
The mooring process by 1 ′, 61 ′ and the receivers 60 ′, 60 ′ can be performed stably and reliably. When the mooring mechanism 6 is of a pinching type, the piercing pin 6
There is no need to move 0, 60 out of the line or to remove the accumulated debris from the pins. Therefore, the bag making operation is not stopped, and the debris B can be easily collected.

FIG. 13 shows an example in which the cutting line has a W-shaped or vertical E-shaped (garbage bag in FIG. 21). However, the present invention is not limited to this. Also applies. Further, the third embodiment is not limited to the method and apparatus for manufacturing a garbage bag using a tube with a gusset, but also applies to the method and apparatus for manufacturing a garbage bag using a tube without a gusset as shown in FIG. Of course, it is applied. In that case, instead of the two-line seal cut mechanism 5,
A sealing mechanism 5a and a cutting mechanism 5b as shown in FIG. 12 are used.

[0040]

According to the first aspect of the present invention described above, in the first step, a continuous cutting line c1, c2, a direction parallel to the feeding direction is provided at a predetermined portion to be a dust inlet of the tube A with gusset. A cutting line C having a required plane shape is set as c3, c4 and a direction intersecting the feed direction with discontinuous cutting lines c5, c6, c7. In a second stage, the upstream end of the cutting line C over the entire width of the gusseted tube. The entire width of the tube with the gusset is cut along the upstream end of the cutting line C between the two-line heat sealing and the third stage is surrounded by the cutting line C of the tube. The discontinuous cutting lines c5, c6 by pulling the gusseted tube (semi-finished product garbage bag) A3 downstream from the mooring site in the downstream direction while mooring the region b. 7 is forcibly and completely cut, and the region b surrounded by the cutting line C is retained, so that the garbage having a pair of projecting pieces g, g for binding from the tube A with a gusset made of a synthetic resin film to the loading side. Bags can be efficiently produced one by one, whereby independent garbage bags can be folded and wrapped in an outer bag one by one, making it easy to use. In particular, in the first stage, the discontinuous cutting lines c5, c
6, c7, it is possible to speed up the feeding of the gusset tube for sealing and cutting of the bag without causing any trouble, and after the cutting for forming the bag is surrounded by the cutting line C. The moistened region b and the pulling of the semi-finished product garbage bag A3 to the downstream side can be easily cut off as the residue B without fail.

According to the second aspect, the cutting line C has a plane W shape or a vertical E shape, and the outermost continuous cutting lines c1 and c4 in the bag width direction among the continuous cutting lines parallel to the feeding direction. Since it is located outside the gusset turn-back line, a convenient garbage bag with handles g ', g' in addition to the binding pieces g, g is efficiently manufactured one by one. In addition, the tops of the folded films constituting the handles g 'and g' are connected by the seals s2 and s2, so that the tops of the folded films are not flared and can be transported downstream easily and reliably. Since the ends of the upper and lower films in the region b surrounded by C are also connected by the seal s2, an excellent effect is obtained in that mooring and blocking can be surely performed without flaring. According to the third aspect, by sequentially and intermittently pitch-feeding a tube with a gusset made of a synthetic resin film, a continuous cutting line c1 to c4 parallel to the transfer direction and a discontinuous cut c5 in a direction intersecting the transfer direction. Processing of the cutting line C combined with c7-bottom sealing, separation before and after-separation and cutting of the area surrounded by the cutting line C can be continuously and stably performed, and these steps are compact and easy. It can be realized by a simple structure. Moreover, the piercing pins 60, 60 serve as the mooring mechanism 6.
And the pressing body 61, the mooring is secure, and the residue B surrounded by the cutting line C is sequentially pierced by the piercing pins 60, 60.
As a result, an excellent effect is obtained in that the chips formed with the protruding pieces g can be easily collected in a block shape that can be easily handled without being scattered in the line.

According to the fourth and eighth aspects, the mooring mechanism 6
To the receivers 60 ', 6 facing the region b surrounded by the cutting line C.
A mechanism 8 configured by a pressing body 61 ′, 61 ′ that can move up and down, and that removes a residue B in which a region surrounded by a cutting line C is separated between the mooring mechanism 6 and the tensile force applying mechanism 7. Is provided, it is easy to collect the debris B, and an excellent effect that bag making can be continuously performed for a long time can be obtained. According to the fifth aspect, in obtaining a garbage bag having a projecting piece for binding on the opening side from a tube made of a synthetic resin film without a gusset, during the transfer of the tube A, as a first step, At a predetermined site that should serve as a trash inlet,
A cutting line C having a predetermined plane shape is formed in which the direction parallel to the feeding direction is continuous cutting lines c1 and c4, and the direction intersecting the feeding direction is a discontinuous cutting line c5. As a second step, the cutting line C extends over the entire width of the tube. Heat-seal the upstream side to form the bottom for the next bag and cut the entire width of the tube along the upstream end of the cutting line C, as a third step
The area b surrounded by the cutting line C of the tube is moored, and the discontinuous cutting line c5 is forcibly completely pulled by pulling the tube (semi-product garbage bag) A3 downstream of the mooring portion in the downstream direction. Since the cutting is performed and the region b surrounded by the cutting line C is retained, the garbage bag having the pair of projecting pieces g, g for binding from the tube A without the gusset to the input side can be efficiently produced one by one. In particular, the discontinuous cutting line c5 only in the direction intersecting the feed direction in the first stage
Therefore, the feeding of the gusset tube for sealing / cutting of the bag can be speeded up without causing any trouble, and the area surrounded by the cutting line C after cutting for forming the bag can be performed. An excellent effect is obtained in that mooring b and pulling to the downstream side can be easily cut off as debris B reliably.

According to the sixth aspect, a garbage bag having a projecting piece for binding on the opening side can be efficiently manufactured from a synthetic resin film tube without a gusset with a compact structure. Since the pins 60 are used, an excellent effect is obtained in that the chips formed with the protruding pieces g can be easily collected in a block shape that can be easily handled without being scattered on the line. According to the seventh aspect, since the piercing pins 60, 60 are heated pins, when the area b surrounded by the cutting line C is pierced, the hole is expanded by heat, so that the mooring can be instantly and surely performed. In addition to the above, an excellent effect that blocking is easy is obtained because a large number of moored chips B are fused at the holes. According to claim 9, a mechanism 7 for applying a forcible pulling force in the transfer direction.
The bag folding device 2 is connected to the downstream side of the garbage bag, so that a garbage bag having a pair of projecting pieces g, g for binding is continuously and continuously made one by one on the input port side, and the garbage bag is inlined into the outer bag. Since it can be folded into a small form suitable for loading, an excellent effect that appropriate labor saving and cost reduction can be achieved. According to the tenth aspect, since the mechanism 7 for applying the forcible tensile force in the transfer direction is an intermittent pinch roller, the area b of the tube surrounded by the cutting line C can be reliably cut by a simple structure. In addition to this, it is possible to form a passage for the pitch feed of the next tube having the cut line processed and the bottom sealed, which is performed immediately after this, so that an excellent effect that the bag making speed can be increased. Is obtained.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing a first embodiment of a synthetic resin film garbage bag manufacturing apparatus according to the present invention.

2A is a vertical sectional front view showing a cutting line processing mechanism in the apparatus of the present invention in a standby state, and FIG. 2B is a vertical sectional front view showing the same processing state.

FIG. 3 is a cross-sectional view of FIG.

4A is a side view showing a continuous cutting edge of the cutting line processing mechanism, and FIG. 4B is a side view showing a discontinuous cutting edge of the cutting line processing mechanism.

FIG. 5 is a vertical sectional side view showing a two-line seal cutting mechanism and mechanisms before and after the two-line seal cutting mechanism in the present invention.

FIG. 6A is a side view showing a pitch feeding step of the first embodiment of the method for producing a synthetic resin film garbage bag according to the present invention;
FIG. 4B is a side view showing a cutting line processing step and a two-line seal cutting step, and FIG. 4C is a side view showing a surplus piece separating step.

FIG. 7A is a side view showing a completion step of a debris separation step of the first embodiment of the method for producing a garbage bag made of a synthetic resin film according to the present invention, FIG. 7B is a side view showing a feeding step, and FIG. It is a side view which shows the state during a folding process.

FIG. 8 is a plan view showing a state change of a synthetic resin tube film with a gusset in the first embodiment of the method for producing a synthetic resin film garbage bag according to the present invention.

9A is a partially cutaway plan view showing a state where a tube is cut along a line in the first embodiment, FIG. 9B is a plan view showing a state where a two-line seal is cut, and FIG. It is a top view which shows the completed state of the garbage bag with a protrusion, and (d) is a top view which shows a folded state.

FIG. 10 is a plan view showing another example of the first embodiment of the method for producing a synthetic resin film garbage bag of the present invention.

FIG. 11 is a plan view showing a second embodiment of the method for producing a synthetic resin film garbage bag of the present invention.

FIG. 12 is a side view showing a second embodiment of the method for producing a synthetic resin film garbage bag of the present invention.

FIG. 13 is a plan view showing a third embodiment of the method for producing a synthetic resin film garbage bag of the present invention.

FIG. 14 is a side view showing a third embodiment of the method and apparatus for producing a synthetic resin film garbage bag of the present invention.

FIG. 15 is a side view illustrating a pitch feeding step according to a third embodiment.

FIG. 16 is a side view showing a cutting line processing step and a seal cutting step of a third embodiment.

FIG. 17 is a side view showing a surplus piece separating step of the third embodiment.

FIG. 18 is a side view showing a stage at the completion of the debris separation process of the third embodiment.

FIG. 19 is a side view showing a feeding step for folding in the third mode.

FIG. 20 is a side view showing a state during the folding step of the third mode.

21 (a) is a perspective view showing a first type of a garbage bag with a binding protrusion in a loaded state, and FIG. 21 (b) is a perspective view showing the garbage bag in a bound state.

FIG. 22 is a perspective view showing a second type of a garbage bag with a binding projection.

[Explanation of symbols]

 1a Airframe 2 Folding device 3 Cutting line processing mechanism 4 Pitch feed mechanism 5 2-line seal cutting mechanism 5a Seal mechanism 5b Cutting mechanism 6 Mooring mechanism 7 Mechanism for applying tensile force 8 Discharge mechanism 36 Cutting blade 36a Continuous cutting blade 36b Cutting blade part for discontinuous cutting 51a, 51b Seal blade receiving base 53 Knife 54 Seal blade 540a, 540b Blade part 60, 60 Piercing pin 60 ', 60' Receiver 61, 61 'Pressing body 70, 70 Intermittent pinch roller A tube A1 Tube processed with cutting line A2 Tube sealed at bottom A3 Semi-finished garbage bag C Cutting line c1, c2, c3, c4 Continuous cutting line c5, c6, c7 Discontinuous cutting line b Area surrounded by cutting line B Cutting G garbage bag with protruding pieces g, g, g ', g' protruding pieces

Claims (10)

[Claims] 1. To obtain a garbage bag having a tying piece on the opening side from a tube with a gusset made of a synthetic resin film, a tube A with a gusset as a first step during the transfer of the tube A with a gusset. In a predetermined portion to be a garbage input port, a direction parallel to the feeding direction is set as a continuous cutting line c1, c.
2, c3, c4, and a cutting line C having a predetermined shape in a plane having discontinuous cutting lines c5, c6, and c7 in a direction intersecting with the feeding direction. As a second step, upstream of the cutting line C over the entire width of the gusseted tube. Heat-seal the front and rear of the side end and cut the entire width of the gusseted tube along the upstream end of the cutting line C between the two-wire heat seals;
As a third step, the cutting line C of the gusseted tube
The area b surrounded by is moored, and the tube (semi-finished garbage bag) A3 with a gusset downstream of the mooring portion is pulled in the downstream direction to thereby cut the discontinuous cutting line c5.
c6 and c7 are forcibly and completely cut, and the region b surrounded by the cutting line C is held down, and is forwarded as a garbage bag G with a gusset having a pair of protruding pieces g and g. How to make garbage bags. 2. A cutting line C has a plane W shape or a vertical E shape,
2. The synthetic resin film according to claim 1, wherein the outermost continuous cutting lines c1 and c4 in the bag width direction among the continuous cutting lines parallel to the feed direction are positioned outside the gusset turn-back lines. 3. How to make garbage bags. 3. A cutting edge portion for continuous cutting 36a in a direction parallel to the feeding direction and a cutting edge portion for discontinuous cutting in a direction intersecting with the feeding direction on a machine body 1a for transferring a tube with a gusset made of synthetic resin film. A cutting line processing mechanism 3 provided with a cutting blade tool 36 of 36b is provided, and at a downstream position of the cutting line processing mechanism 3, a seal blade receiving table 51 having a knife 53 in the middle.
a, 51b, and a two-line seal cutting mechanism 5 having a pair of vertically movable seal blades 54 having a guide groove 541 for the knife 53 in the middle, and a cutting line near the two-line seal cutting mechanism 5. A mooring mechanism 6 having piercing pins 60, 60 opposed to a region b surrounded by a cutting line C formed by the processing mechanism 3 and a vertically movable pressing body 61 piercing the region b toward the pin. The mooring mechanism 6 is located on the airframe downstream of the mooring mechanism 6.
Characterized in that a mechanism 7 for applying a forcible tensile force in the downstream direction to a tube with gusset (semi-finished garbage bag) to cut off the region b surrounded by the cutting line C moored by Garbage bag manufacturing equipment. 4. A cutting edge portion for continuous cutting 36a in a direction parallel to the feeding direction and a cutting edge portion for discontinuous cutting in a direction intersecting with the feeding direction on a machine body 1a for transferring a tube with a gusset made of synthetic resin film. A cutting line processing mechanism 3 provided with a cutting blade tool 36 of 36b is provided, and at a downstream position of the cutting line processing mechanism 3, a seal blade receiving table 51 having a knife 53 in the middle.
a and 51b, and a two-wire seal cutting mechanism 5 having a pair of vertically movable seal blades 54 having a guide groove 541 for the knife 53 in the middle. Receiver 6 located opposite region b surrounded by cutting line C formed by line processing mechanism 3
A mooring mechanism 6 having a pressing body 61 ′ that can move up and down to hold the area b between the cradle 60 ′ and 60 ′ is provided on the body downstream of the mooring mechanism 6. Is
A mechanism 7 for applying a forcible pulling force in the downstream direction to the gusseted tube (semi-finished garbage bag) to cut off the area b surrounded by the cutting line C moored by the mooring mechanism 6.
And a mechanism 8 for discharging the separated and cut residue B is disposed between the mechanism 7 for applying the pulling force and the mooring mechanism 6. 5. To obtain a garbage bag having a tying piece on the opening side from a tube made of a synthetic resin film without a gusset, as a first step during the transfer of the tube A, throwing garbage into the tube A At a predetermined portion to be a mouth, a cutting line C having a predetermined plane shape is formed in which a direction parallel to the feeding direction is continuous cutting lines c1 and c4, and a direction intersecting with the feeding direction is a discontinuous cutting line c5. Heat sealing the upstream side of the cutting line C over the entire width of the tube to form a bottom for the next bag and cutting the entire width of the tube along the upstream end of the cutting line C; The area b surrounded by the cutting line C of the tube is moored, and the discontinuous cutting line c5 is forcibly completely pulled by pulling the tube (semi-product garbage bag) A3 downstream of the mooring portion in the downstream direction. Cut Region enclosed by the cutting line C along with b
A garbage bag made of a synthetic resin film, wherein the garbage bag is forwarded as a garbage bag G having a pair of projecting pieces g, g. 6. A cutting blade portion for continuous cutting 36a in a direction parallel to the feeding direction, and a cutting blade for discontinuous cutting in a direction intersecting with the feeding direction, on a machine body 1a for transferring a tube made of a synthetic resin film without a gusset. A cutting line processing mechanism 3 having a cutting blade 36 as a portion 36b is provided, and a sealing mechanism 5a and a cutting mechanism 5b are arranged at a downstream position of the cutting line processing mechanism 3, and the cutting mechanism 5b is provided near the cutting mechanism 5b. A mooring mechanism 6 having piercing pins 60, 60 opposed to a region b surrounded by a cutting line C provided by the cutting line processing mechanism 3, and a vertically movable pressing body 61 for piercing the region b toward the pin. Is provided on the airframe downstream of the mooring mechanism 6 so that a tube (semi-finished garbage bag) is forced in the downstream direction to cut off the area b surrounded by the cutting line C moored by the mooring mechanism 6. A pulling force to, characterized in that arranged a mechanism 7 for imparting a synthetic resin film garbage bag manufacturing equipment. 7. The apparatus according to claim 3, wherein the stab pin is a heated pin. 8. A cutting blade portion for continuous cutting 36a in a direction parallel to the feeding direction and a cutting blade for discontinuous cutting in a direction intersecting with the feeding direction on a body 1a for transferring a tube made of a synthetic resin film without a gusset. A cutting line processing mechanism 3 having a cutting blade 36 as a portion 36b is provided, and a sealing mechanism 5a and a cutting mechanism 5b are arranged at a downstream position of the cutting line processing mechanism 3, and the cutting mechanism 5b is provided near the cutting mechanism 5b. In the region b surrounded by the cutting line C formed by the cutting line processing mechanism 3, the receivers 60 ', 60' and the region b are connected to the receiving tables 60 ', 60'.
And a mooring mechanism 6 having a vertically movable pressing body 61 ′ for being sandwiched between the mooring mechanism 6 and an area surrounded by a cutting line C moored by the mooring mechanism 6. a mechanism 7 for applying a forcible pulling force in the downstream direction to the tube (semi-finished product garbage bag) to separate b
An apparatus for producing a garbage bag made of a synthetic resin film, comprising a mechanism 8 for discharging the separated and cut residue B between the mechanism 7 for applying the tensile force and the mooring mechanism 6. 9. The synthetic resin film according to claim 3, wherein the bag folding mechanism 2 is connected downstream of the mechanism 7 for applying a forcible tensile force in the downstream direction. Garbage bag manufacturing equipment. 10. The apparatus for manufacturing a garbage bag made of a synthetic resin film according to claim 3, wherein the mechanism 7 for applying a forcible tensile force in the downstream direction is an intermittent pinch roller.