JPS62182017A - Automatic bundling method and device for packaging bag - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial application field> The disclosed technology automatically binds the upper opening of a polyethylene packaging bag filled with a predetermined amount of candy, peanuts, etc. with a narrow adhesive tape or the like. It belongs to the field of equipment structure technology.

<Summary of the gist> The invention of this application fills a packaging bag made of polyethylene or the like with a predetermined number and weight of candy, peanuts, etc. using a filling device, and then seals the upper opening of the bag.
Alternatively, without sealing, the upper part is automatically cut off with a cutter, and a rotary binding machine uses a number of binding arms to circulate around with clamping support, and the opening is made into a fan shape with narrow adhesive tape, etc. using a binding tool. This invention relates to a method for tying in a converged state and a device directly used for the method, and in particular, a rotary tying machine is provided with only one tying arm for each set number of heads so as to be swingable in the circumferential direction. Also, automatic binding of packaging bags in which the initial posture is maintained and the packaging bags are avoided and tied by a device having a soft elastic clamping support body made of urethane foam or the like against the packaging bags on the lower side of the binding arm. This invention relates to a method and an automatic packaging bag binding device directly used in the method.

<Prior art> As is well known, as citizens' lives become more affluent, the quality and versatility of products in the secondary market increases, and many products are supplied in a variety of forms. Appearance has become an important requirement.

Among these, it has become common for candy, peanuts, etc. to be packed in polyethylene packaging bags in a predetermined number or weight, sealed by heat sealing, and then supplied to supermarkets and displayed. Their hygienic packaging and good design are stimulating consumers' desire to purchase them.

Generally, the seed packaging bag is formed into a cylindrical shape using a film made of polyethylene or the like through a chute, and the product is automatically filled and sealed, and the heat-sealed part of the upper opening is sealed. By cutting with a cutter or the like, the cut ends of the upper and lower sealed portions are generally at right angles.

In some cases, the upper and lower ends are heat-sealed and put on display in a so-called pillow-type packaging bag, but in order to whet the appetite and purchase desire of young children, they are packaged in a predetermined manner as shown in Figure 8. Polyethylene packaging bag filled with products 1
A predetermined lower part 4 of the heat sealing part 3 of the upper opening 2 of
In this regard, there is an embodiment of a packaging bag that is bound with narrow colorful adhesive tape 5 or the like to improve the design and appearance.

By the way, when the packaging bag 1 is filled with the type of product, there is a problem that if the tape 5 is not tied parallel to the bottom 6 in that position, the appearance will be poor. is not done in an accurate horizontal position,
If the shape of the opening 2 in the upper part 4 is not fan-shaped, there is a problem in that the design looks unsightly.

<Problems to be Solved by the Invention> Therefore, the bundling of packaging bags that have been used so far is as shown in FIG. In this embodiment, a plurality of arms 10, 10, . A boulder 11 having a U-shape in plan view is provided at the tip, and rotates along a guide plate 12 provided in a semicircular shape concentrically with the rotating shaft 9. A concave portion 1 for binding the packaging bag 1 is provided at the outer edge of the tip.
A pair of binding arms 14, 14 having a set number of heads are moved to each other via a gear mechanism 15 so that their tips can be opened and closed at a set angle, and are opened at a predetermined position on the guide plate 12. A cam machine M416 that changes the state from the closed state to the open/closed state is linked so that its tip revolves along the guide plate 12, and then a product filling device (not shown) is placed on the starting end 17 of the guide plate 12. The product is filled in the packaging bag 1 whose bottom 6 is heat-sealed, the top opening 2 is sealed 3 and the packaging bag 1 with the opening 2 cut falls, and the holder 11 is placed in the place where it fell. The guide bar 18.18, which is rotated and forcibly pushed forward on the guide plate 12 while holding the packaging bag 1 inside thereof, is formed into a tapered shape and is provided at the upper part of the set height along the guide plate 12. As the upper opening is rotated, the upper opening is gradually closed, and the pair of binding arms 14 are closed.
．． 14 are approached so as to face each other by the cam mechanism 16 and the gear mechanism 15, and the packaging bag 1 is squeezed from both sides in the vertical direction at the squeezing position 19, and while maintaining this state, it goes around the guide plate 12, and is moved to the bundling position 20. Then, the pair of binding arms 14.14 are opened at the end of the guide plate 12 by the cam mechanism 16 and the gear mechanism 15, and the bundled packaging bags 1 fall into a chute (not shown) and are properly The data is transferred to the next stage of processing.

Therefore, basically, the bottom 6 of the packaging bag 1 dropped from the filling device is connected to the plate 12 in the circular path from the start end 17 to the end end 22 of the guide plate 12!
Therefore, due to the circumferential movement resistance of the bottom 6 and the moment caused by the pushing action of the upper holder 11, it is easy to take a forward leaning position. Then, as mentioned earlier, packaging bag 1
Since the tape 5 is not tied parallel to the bottom 6, and the tape 5 is tied in such a forward-leaning position, the top 4 is not tied in a symmetrical fan shape, which makes it look unattractive. This had the disadvantage that the quality of the product deteriorated and the product position was lowered from a design point of view.

In addition, since the product is filled with the product at the dropping position 17, the upper opening 2 is heat-sealed 3, and then cut off, the product falls a predetermined distance onto the guide plate 12, resulting in poor posture due to the impact of the fall. , the tape 5 is not set in the set position, and is pushed forward by the holder 11 in that state as described above, so as it moves, the position deteriorates from the initial state, and the binding position parallel to the bottom 6 of the tape 5 cannot be obtained. There is also the disadvantage that the fan-shaped shape of the upper part 4 cannot be guaranteed from this point of view, and these together have the disadvantage of often decreasing the product value. In some cases, the fan-shaped shape of the upper part 4 must be manually reshaped after binding, and in such a case, the number of pieces to be processed increases, which tends to increase the cost.

The purpose of the invention of this application is to solve the technical problem of bundling the packaging bags at the lower part of the heat seal after filling the products based on the above-mentioned prior art, and to solve the problem of bundling the packaging bags at the bottom of the heat seal after filling the products, and to solve the problem of bundling the packaging bags at the lower part of the heat seal after filling the products. The bundling is done parallel to the bottom of the bag, and the fan-shaped shape of the upper heat-sealed part is formed symmetrically, which significantly improves the design of the overall shape of the packaging bag, which is beneficial to the field of packaging technology application in the distribution industry. The present invention aims to provide an excellent method for automatically tying packaging bags and an automatic tying device that can be used directly.

<Means/effects for solving the problem> In order to solve the above-mentioned problem, the structure of the invention of this application, which is based on the scope of the above-mentioned patent claims, is to solve the above-mentioned problem. When the heat-sealed packaging bag is filled with products, the clamping support device of the automatic binding device lightly compresses and supports the packaging bag from both sides using the soft elastic support body, and in this state, the upper part of the packaging bag is heated. The sealed or unheat-sealed opening is cut, and the cut packaging bag does not fall due to the clamping pressure support state. While each binding arm is rotating, the front binding arm in the circumferential direction is rotated backward by the circumferential swinging device, and the four parts for clamping pressure support at the tips of both the rear binding arms and both are connected by the clamping pressure support device. Supporting the packaging bag by squeezing the upper heat-sealed part from the circumferential direction of the packaging bag that is supported with light clamping pressure, or by squeezing that part in the vertical direction if it is not heat-sealed, Thereupon, the clamping pressure support device for the side surface of the packaging bag is detached and a baton touch of support for the packaging bag is performed, and the packaging bag, whose upper part is supported by the pair of binding arms, is moved around the binding tool 17I and moved to the binding tool. The binding device binds the bag in a predetermined position, and then the rear binding arm is rotated backward by the circumferential swinging device to approach the further rear binding arm and seal the upper heat-sealed portion of the next packaging bag. A technical measure has been taken in which the unsealed portion is supported with clamping pressure, while the bundled packaging bags are allowed to fall and are appropriately transferred to the next processing step.

<Embodiment - Configuration> Next, one embodiment of the invention of this application will be described as follows based on FIGS. 1 to 7. Note that the same parts as in FIG. 8.9 will be explained using the same reference numerals.

Reference numeral 23 denotes an automatic binding device for packaging bags 1, which constitutes one of the gist of the invention of this application, and includes a product filling device 24 which is substantially the same as the conventional mode, and a link 25.23 to the automatic filling device 24 at the lower part thereof.
It is interlocked via 25 and is provided facing the clamping support device @ 26 that moves forward and backward with respect to the packaging bag 1 from both sides.
In addition, an adhesive tape binding tool 21 that is substantially the same as the conventional method is provided, and a bearing 29 at the upper end of an L-shaped stand 28 erected on the base and a bearing 3 provided on the base are provided.
The rotating shaft 9, which is pivotably supported vertically so as to be rotatable at 0, is connected at its base to a drive device (not shown) via a bevel gear mechanism 31 so as to rotate in a predetermined manner.

Upper and lower disks 34 and 34' are fixedly provided on a collar 33 provided at a level position between the filling device 24 and the clamping pressure support device 26 through a keyway 32 with respect to the rotating shaft 9, It is rotatable integrally with the rotating shaft 9, and a predetermined number of pins 36, 36, . Different brackets for each position 37.
37'... are fixedly installed, each of which has a binding arm 38, 38 with a narrow vertical spacing, and a binding arm 38 with a wide vertical width.
', 38' are integrally provided with recesses 13', 13' for holding the packaging bag 1 formed at the front and rear edges of their outer ends, respectively.

Note that the upper and lower narrower binding arms 38, 38 overlap and intersect with each other at their tips when they approach each other relative to the upper and lower wide binding arms 38', 38'.

A bracket 39 is fixed to the upper end of each pin 36, and an upward cam follower roller 40 rotatably supported at the tip thereof is connected to a bracket 42 fixed to the stand 28 via a bracket 41. provided cam plate 4
An arc-shaped cam groove 44 is provided on the lower side of the cam plate 4.
It is open at both circumferential ends of 3.

Therefore, the cam groove 44 is not shown on the left side of the cam plate 43 shown in FIG.

Further, a bearing 45 is provided inside the cam plate 43 to allow relative rotation of rotation @9.

In addition, the bracket 3 for fixing each binding arm 38, 38'
7.37' is provided with a pinion 46 on the lower side, which meshes with a gear (not shown) at the binding position and connects each binding arm 38.38.
', as shown in FIG. 2, it is tilted and biased by a set angle θ in the direction of rotation to maintain its posture.

In addition, as shown in FIG. 2, each binding arm 38, 38...
- Arm 3 is tilted forward in the direction of rotation at an angle slightly smaller than θ above until it reaches the binding position, as shown in Figure 2.
A cam follower roller 40' is engaged with a cam groove 44' provided above and below separately from the above cam groove 44, and rotates through the cam follower roller 40'.

As shown in FIG. 2, the cam groove 44 has an axis that corresponds to the circumferential rotation trajectory of the cam follower 40 integrated with the binding arm 38, 38' in its natural position. The inlet 47 on the opposite side is slightly curved and opened in the direction of the rotating shaft 9. Therefore, as shown in FIG. 2, the cam follower roller 4o close to the inlet 47 of the cam groove 44 The binding arms 38 and 38' interfere with the outer inner surface starting end of the cam groove 44 and are biased in the opposite direction in the circumferential direction, so that the binding arms 38 and 38' move in the opposite direction in the circumferential direction around the pin 36 as shown by the arrow in FIG. (The design is such that the absolute value is approximately equal to the forward tilt angle θ.) The pin 36 rotates in the opposite direction by the set angle θ' (the design is such that the absolute value is approximately equal to the forward tilt angle θ), and the cam rotates backward by the set angle θ'. The follower roller 40 has a cam groove 44
The binding arm engages with the cam groove 44 and pivots in the circumferential direction while maintaining an attitude of inclination opposite to the radial direction and θ'. 38', the recess 13' on the front edge of the outer end thereof, and the recess 13' on the rear edge of the outer end of the binding arm 38 which is rotating first are overlapped, and the binding arm is moved by the stroke of the cam groove 44. 38 and 38' both maintain an overlapping position at their tips, and the front binding arm 38' reaches the outlet end 48 of the cam groove 44.

At this time, the binding arm 38' that comes after is connected to the pinion 46.
Due to the engagement of the gear and the cam groove 44, the cam groove 44 approaches the entrance 47 of the cam groove 44 while actively maintaining a forward tilted posture by an angle θ with respect to the diametrical direction.

Then, when the cam follower roller 40 comes out from the cam groove 44, the cam follower roller 40' engages with the cam groove 44', so that the front binding arm 38 is moved at an angle smaller than θ in the turning direction with respect to its diameter. The vehicle is designed to return to a forward leaning position in the direction of travel.

Through this process, the front binding arm 38' adjusts the squeeze position 19 with respect to the packaging bag 1 at the timing when its cam follower roller 40 engages with the cam groove 44.
are located in the recesses 13', 1 of the binding arms 38 and 38'.
3', both ends of the upper part 4 of the packaging bag 1 begin to be squeezed in the vertical direction, and since the pins 36 and 36 of the front binding arm 38 and the rear binding arm 38' rotate at the same speed, the cam The position of the follower roller 40 and the cam groove 4
The position 4 is such that the speed at which the binding arms 38 and the binding arms 38' approach the packaging bag 1 from both sides is the same.

Also, the cam follower roller 40 of the binding arm 38 on the other side
is in the cam groove 44, and the rear binding arm 38' is not close to the entrance 47 of the cam groove 44, the tips of the binding arms 38 and 38' overlap, and the packaging bag 1 is squeezed to tighten the packaging bag. The cam follower roller 4 of the front binding arm 38 moves around the binding position 20 while supporting the lower side of the opening 2 in the upper part 4 of the binding arm 38.
0 reaches the outlet 48 of the cam groove 44 and the rear binding arm 3
The cam follower roller 40 at 8' is located at the entrance 4 of the cam groove 44.
It is designed to come into contact with 7.

In the filling device 24, the pair of inner and outer brackets 51, 51' are intermittently brought closer to each other and separated from each other by a cam mechanism (not shown), and such a mechanism generally uses conventional heat sealing. The one used in the mechanism is adopted, and the outer bracket 51'
It has a retainer 52 on the outside thereof and is equipped with a solenoid 53, so that a cutter 54 can freely advance and face each other.

On the other hand, the clamping pressure support device 2 provided below the filling device 24
At step 6, the heater 50 of the filling device 24 is controlled by a control device (not shown) to support the packaging bag 1 containing the product 49 and having the upper opening 2 heat-sealed 3 from both sides.
．． 50, the links 25.25' of the clamping pressure support device 26 are simultaneously brought close to each other in synchronization with the approach and separation of the inner and outer brackets 51.51' of the clamping pressure support device 26, or the links 25.25' of the clamping pressure support device 26 is appropriately controlled so that they approach each other faster than the set time.

A support body 56.56 made of urethane foam is fixed with adhesive to the retainer 55.55' which is integrally fixed and erected to the link 25.25, and the packaging bag 1
is pinched from both the inner and outer sides 11, 11' to expel the internal air, and is supported by pinching and transported in the air to the next stage binding tool 21.

<Embodiment - Effect> In the above-mentioned binding device 23, a polyethylene film sheet is sent from a bag manufacturing device (not shown), and the lower part of the cylindrical forming portion forms the packaging bag 1, as shown on the left side of FIG. A predetermined amount of product 49 such as candy is filled, and the rotating shaft 9
bearing 29.44.3 through bevel gear device 31
0 and rotates in place, thus disc 3
4.34', each binding arm 38.38' also engages with the cam groove 44' of the cam follower roller 40' and pivots by a set angle in the diametrical direction with respect to the pivoting direction. It is rotated while maintaining a forward leaning posture.

For convenience of explanation, starting from the drawing position 19, the product 49 is filled in the filling device 2 at a position between each of the binding arms 38 and 38' which are in an open state.
The link 25.25' of the clamping pressure support device 26 approaches the packaging bag 1 suspended from the packaging bag 1 by a film from the inside and outside, and the support body 56.56 is attached via the retainer 55.55'.
supports both the inner and outer surfaces i' and i' of the packaging bag 1 with light pressure to expel the air inside, and then, in synchronization with the approach of the links 25 and 25' of the support device 26, or slightly After a time delay, the brackets 51, 51' of the filling device 24 approach by a cam mechanism (not shown), the heaters 40, 40 heat the film, heat seal 3 to the top opening 2 and bottom 6 of the packaging bag 1, and then , the solenoid 53 is energized and the cutter 54 moves forward to cut the film.

However, the lower packaging bag 1 does not fall because its both sides 1', 1' are lightly supported by the supporting body 56, 56 of the clamping support device 26, and the bag 1 does not fall down and maintains its initial clamping support posture. maintain.

During this time, since the rotating shaft 9 rotates, the cam follower roller 40 of the front binding arm 38 moves into the cam groove 4, as described above.
The binding arm 38' from the rear rotates and rotates backward through the pin 36 by an angle of θ' as shown in FIG. 46 engages with the gear and actively moves forward toward the circumferential direction by θ, so that their outer ends approach from both sides of the packaging bag 1 and overlap as shown in FIG. , each of the four portions 13', 13' apply a squeezing action from the vertical direction to support the packaging bag 1 under pressure.

The relative engagement postures of the front binding arm 38 and the rear binding arm 38' during the work of heat sealing and cutting the packaging bag 1 at the squeezing position 19 of the packaging bag 1 are as shown in FIG.

At this timing, the links 25, 25' of the clamping pressure support device 26 are separated from each other inwardly and outwardly via a control device (not shown), and the support body 56, 56 is separated from both sides 1', 1' of the packaging bag 1, thereby increasing the clamping pressure. The support is released, but in this process, the recesses 13', 13' of both binding arms 38, 38' squeeze and support the upper part 40 of the packaging bag 1 from both sides.
Even if the support body 56.56 of the clamping pressure support device 26 is separated, it does not fall, and the clamping pressure support posture of the packaging bag 1 by the support body 56.56 is maintained.

During this time, since the rotating shaft 9 rotates continuously,
The front binding arm 38 moves forward due to the engagement of the cam follower roller 40 and the cam groove 44, and the rear binding arm 3
8' maintains the forward tilted posture of θ by engaging the cam follower roller 40' with the cam groove 44' that bulges slightly outward;
Immediately before the cam follower roller 40 engages with the cam groove 44, the cam groove 44' is connected to the cam follower roller 40'.
becomes the terminal end, and the binding arm 38' is released from the forward tilted posture of θ, that is, the binding arm 38' continues to revolve while maintaining the posture shown in FIG.

When the cam follower roller 40 approaches the outlet 48 of the cam groove 44, the adhesive tape 5 instantly binds the upper part 4 of the packaging bag 1 by the binding device 21, as shown in FIG. 3.6. .

During this time, the packaging bag 1 is attached to both binding arms 38 and 38'.
The four end portions 13' and 13' of the packaging bag 1 overlap as shown in FIG. As shown in FIG. 2, the binding work is completed with the tape 5 being completely parallel to the bottom 6 as designed using the binding tool 21.

Since the rotating shaft 9 is continuously rotating,
When the cam follower roller 40 of the preceding binding arm 38 is disengaged from the cam groove 44, the cam follower roller 40' re-engages with the cam groove 44', and the binding arm 38 is placed in a slightly forward angular position relative to θ in the rotational direction. As a result, the four parts 13' at the tip of the binding arm 38' move away from the four parts 13' of the binding arm 38' which advances from the rear, and the packaging bag 1 falls downward at the open falling part 22. , and are transferred to the next stage process via a chute (not shown).

Then, the binding arm 38 that has opened the packaging bag 1 continues to rotate forward while maintaining the forward tilted posture of θ.

Further, the posture in which the front and rear end arms 38 and 38' rotate again to the squeezing position 19 of the packaging bag 1 with each cam follower roller 40 disengaged from the cam groove 44 is shown in FIG. It is as shown.

During this time, the cam follower roller 40' of the binding arm 38' that rotates later is connected to the cam? fW44' to P! As described above, the cam follower roller 40 comes close to the opening 47 of the cam groove 44, interferes with the inside of the outer cam surface, and tilts backward by θ' around the pin 36. Binding arm 3 moving forward from further behind
It moves backwards so as to overlap the recess 13' on the front edge of the outer end of the bag 8 and squeeze the upper part 4 of the packaging bag 1 at the squeezing position 19.

During this period, the product 49 is transferred from the filling device 24 to the bottom 6.
The packaging bag 1 filled with is lowered, and the retainer 55.55' of the clamping support device 26 approaches via the link 25.25', and the support body 56.56 is attached to both sides 1', 1' of the packaging bag 1. The brackets 51 and 51' of the upper filling device 24 are placed in a standby position with light pressure applied to the brackets 51 and 51' of the upper filling device 24.
The heaters 50 and 50 heat-seal the upper opening and the bottom 6 in the same way as described above, and the solenoid 53 is activated to open the cutter 54.
cuts the film in the same manner as described above.

Then, at that timing, as described above, the front binding arm 38 and the rear binding arm 38' are squeezed.

the relative proximity and separation of the binding arms 38, 38' to each other;
The cycle postures of closing, opening, and forward tilting are as shown in Fig. 3.

In this way, filling, heat sealing, and cutting of the product 49 into the packaging bag 1 are carried out at the same plane level, whereas the set number of binding arms 38, 38' is half the number of the conventional method. However, one binding arm 38 (38') is attached to the support pin 36.3 with respect to the rotating shaft 9.
6... while moving in the circumferential direction at a constant speed, the binding arms 38 move in the circumferential direction and in the opposite direction with respect to each pin 36, and move the binding arms 38 in front of and behind the binding arm 38.
', the four end portions 13', 13' are alternately overlapped to produce a squeezing action on the upper part 4 of the packaging bag 1, and
The squeezing process, the clamping support transfer process, and the bundling process can be performed continuously by performing the clamping pressure support action.

Therefore, one binding arm 38 (j8') moves in the opposite direction to participate in the squeezing action, rotates in the circumferential direction to provide clamping pressure support, and participates in the triple function of squeezing support and conveyance. There is.

During this time, the packaging bag 1 is not only subjected to a clamping pressure and support action before being squeezed, but also the air inside is expelled, so that it is transported in a kind of aerial rotation without sliding on the guide plate as in the conventional mode. In order to receive the action, the posture does not change at all, and the binding action can be received while maintaining the initial clamping support posture.

It goes without saying that the embodiments of the invention of this application are not limited to the above-mentioned embodiments, and include, for example, clamping pressure, clamping pressure support of the packaging bag by a support device, air expulsion action, heat sealing, and cutting action. For the circumferential swinging device of the binding arm of the rotary binding machine, it is possible to change the rotation direction using a solenoid through a limit switch, etc., in addition to the cam groove and cam follower mechanism. Various aspects can be adopted.

In addition, the binding means that can be applied may be strings, wires, etc. in addition to adhesive tape, and various packaging bags such as those made of paper can be used in addition to those made of polyethylene. Of course, this is also true.

<Effects of the Invention> As described above, according to the invention of this application, basically, when the upper part of a packaging bag for storing a predetermined amount of candy, peanuts, etc. is bound with colorful adhesive tape, etc., the packaging bag before binding is made of polyethylene. In addition to being formed with a very beautiful design and excellent appearance using a film made from a product such as a plastic film, the adhesive tape can be tied parallel to the bottom as designed. By being able to form a fan shape with plane symmetry as per the design, the overall aesthetic beauty is created, and the excellent effect of making use of the design is produced.

This has the effect of increasing the value of products displayed in supermarkets and stores, and also allows children to retain their quality as personal belongings. The effect of Qin was brought to light.

In this bundling method, by squeezing both sides of the packaging bag after it has been filled with products, air inside the bag can be expelled prior to bundling. This has the effect that the packaging bag does not get damaged during packaging, and even if the upper part is heat-sealed or cut while the packaging bag is supported, it will not fall because the packaging bag is supported with clamping pressure. This provides an excellent effect in that the slide does not fall onto the guide plate and lose its posture during slide conveyance, as in the conventional case.

Furthermore, since it is possible to perform support by applying a squeezing action with the binding arm while supporting both sides with pressure, it is possible to carry out a type of aerial transportation until the product is bundled. Since the binding can be done while maintaining the supporting posture due to the action, an excellent effect is achieved in that the binding can be done parallel to the bottom.

In addition, since air transportation does not change the posture of the packaging bag, it has the excellent effect of forming the upper part into a perfect fan shape.

In this way, the packaging bag is supported in the air from the temporary support by the upper aperture to the binding state, so that the effect of not changing the posture is achieved.

Since the clamping pressure support on both sides of the packaging bag and the vertical clamping pressure support on the upper part are performed in orthogonal directions, the vertical clamping pressure support is performed after the clamping pressure support is performed on both sides in advance. This has the excellent effect of creating a beautiful, plane-symmetrical fan-shaped upper part.

As a result, the binding device not only has the effect of making full use of the advantages of the conventional compact type, which has a large number of radial binding arms attached to the central rotary binding machine, but also has the effect that each head can be Because only one binding arm is required instead of two, the number of binding arms is halved, the weight is correspondingly lighter, manufacturing is easier, and the initial cost is significantly reduced.

Moreover, each binding arm is pivoted by a pin to the rotary binding machine, and is swingable not only in the direction of rotation but also at a set angle rearward, so that a concave portion at the tip for binding the packaging bag can be formed. By providing them at the front and rear edges, in a forward leaning position, the rear edge and tip of the binding arm that revolves first can overlap to squeeze the packaging bag, and transport and bind it by supporting the clamping pressure. After tying, the bag can be rotated backwards to perform a squeezing action on the four front edges of the tying arm coming from behind and the packaging bag. An excellent effect is achieved in that various functions during turning can be performed redundantly with one binding arm.

Therefore, an excellent effect is achieved in that space and time are utilized three-dimensionally during the rotation of one binding arm.

Furthermore, since the packaging bag side clamping support device is attached to the bottom of the product filling device installed on the side of the rotary binding machine, the packaging bag can be squeezed and clamped prior to being squeezed and clamped by the binding arm, as described above. Since the clamping support can be supported while the product is filled, it does not fall onto the guide plate as in the case in the US, and the clamping support posture can be maintained while the product is being squeezed and tied in the air. In order to carry out the transportation, a type of spatial transportation means can be used, and the tapes can be bound and the upper part fan-shaped as designed, without changing the posture due to falling or falling forward due to sliding. Excellent connecting effects are produced.

In addition, since the packaging bag does not need to fall after the product is filled, there is no damage to the product, and the good design of the product can be maintained, making it easier for young children. It has the excellent effect of giving you a sense of satisfaction in owning it.

[Brief explanation of drawings]

1 to 7 are explanatory diagrams of one embodiment of the invention of this application, FIG. 1 is an overall schematic sectional view of the binding device, and FIG. 2 is a circumferential rotation swing by the cam follower and cam groove of the binding arm. Fig. 3 is a schematic plan view of the relative posture of the binding arm at each circumferential position; Figs. 4 to 7 are schematic plan views of the relative posture of the front and rear binding arms in each process; A completed perspective view of the bag, and FIG. 9 is a schematic plan view of a binding device based on a conventional aspect. 49...Product, 1...Packaging bag, 3...Seal portion, 1'...Both sides, 27... Rotary binding machine, 38... Binding arm, 21... Binding tool, 23
...Automatic bundling device, 24...Filling device, 50...
・Sealing device, 26... Clamping pressure support device, 56...
Support body, 13'...Four parts, 40...Circumferential rocking device Applicant: Sanwa Jiki Seisakusho Co., Ltd. Double 4 Figure

Claims (7)

[Claims] (1) In an automatic packaging bag tying method in which after sealing a packaging bag filled with a product, the upper part of the sealed part is cut off and the bag is wrapped around the bag to be automatically tied. The air was expelled and sealed, and then the upper part was cut with the packaging bag supported from both sides, the upper part was supported with pressure to release the support on both sides, and the packaging bag was then transferred and tied. A method for automatically tying packaging bags, characterized by: (2) The method for automatically tying packaging bags according to claim 1, wherein the clamping pressure support on both sides and the clamping pressure support on the upper part are performed in orthogonal directions. (3) The automatic packaging bag according to claim 1, wherein the upper part is clamped and supported by the leading and trailing edges of the reciprocating circumferential movement of the revolving binding arm. Binding method. (4) A rotary tying machine facing a filling device equipped with a cutting device supports a number of radially tying arms so as to be swingable in the circumferential direction, and the tips of the tying arms can freely pass through the tying tool. The automatic bundling of packaging bags is characterized in that the bundling device is provided with a packaging bag side clamping pressure support device that is linked to a sealing device of the filling device below the bundling arm of the filling device. Device. (5) The automatic packaging bag binding device according to claim 4, wherein the side clamping pressure support device includes a soft elastic support body. (6) A rotary tying machine facing a filling device equipped with a cutting device supports a number of radially tying arms so as to be swingable in the circumferential direction, and the tips of the tying arms can freely pass through the tying tool. In the binding device, the binding arm has a concave portion formed at the front and rear edges of its tip for supporting clamping pressure against the packaging bag, and is pivotally supported to the rotary binding machine and linked to the circumferential swing device. Automatic binding device for packaging bags. (7) The automatic packaging bag binding device according to claim 6, wherein the binding arm is normally attached to the rotary binding machine so as to be inclined in the rotational direction rather than the diametrical direction.