JPS6317612B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bag making device in which a hanging device for hanging the bag is attached to a packaging bag formed from, for example, a cylindrical packaging material to enclose an item.
An object of the present invention is to efficiently manufacture a bag with a hanger by properly attaching a target hanger to a predetermined position on the attachment edge (for example, end seal edge) of a packaging bag.

The present invention will be explained below based on illustrated embodiments.

This example shows an example of a packaging machine that is generally called a horizontal pillow packaging machine, and the bag making device includes an end seal mechanism A for a center-sealed cylindrical film F filled with products, and a seal A pasting mechanism B that operates in synchronization with mechanism A to stick the hangers to the seal edge of the packaging bag _F1 , and a supply mechanism C that supplies the hangers one by one to the pasting mechanism B.
It is composed of and.

First, in the end seal mechanism A, actuating bodies 1, 1 are connected to upper and lower crank mechanisms (not shown) which are connected to each other to perform synchronized non-uniform speed operation, and the cylindrical film is fed from each actuating body 1 in the feeding direction. a support 3 for each of the upper and lower arms 2, 2 extending perpendicularly to the
A pair of upper and lower seal bodies 5, 5 are removably attached to the support rod 4. Both seal bodies 5 have a V-shaped groove 6 formed at the center in the width direction so that their opposing parts have a W-shaped cross section.
Second sealing surfaces 8 and 9 are formed parallel to the longitudinal direction. The groove 6 of the lower seal body 5 and the slit 10 communicating therewith are used as knife sockets, and the slit 11 communicating with the groove 6 of the upper seal body 5 holds the knife 1.
2 is inserted adjacent to the first sealing surface 8.
The knife 12 is mounted on a holder 13 connected to a rod 52 of a cylinder 51 installed on the arm 2.
The holder 13 is removably held by an opening/closing holding piece 14 placed on both sides of the holder 13 via pins and springs, and its cutting edge is normally held above the upper sealing surface and lowered by the operation of the cylinder 51. is set to. 15 indicates a heater.

Note that the upper seal body 5 is connected to the rod 3a of the support 3,
It is held so that its position can be adjusted using a nut 3b, and can be moved upward using a spring 3c. As a result, both seal bodies 5, 5
The film is rotated over an appropriate revolution angle range (also referred to as a seal range) while keeping the seal surfaces 8 and 9 aligned and in contact with each other at a position that matches the height of the cylindrical film (for example, 1/2). It is set so that it can move at the same circumferential speed as the feeding. On the other hand, in this example, the cylinder 51 of the knife 12 is activated at the same timing for each seal (every time the two seal bodies 5 align and contact each other), but it can also be set to operate for multiple seals. It is.

In the pasting mechanism B, which is arranged in parallel with the seal mechanism A at a predetermined interval (distance), each of the actuating bodies 1, 1
Upper and lower arms 16, 16 extending from predetermined positions of
A pair of bonded bodies 17 and 21 are removably attached to the body via a support 3 and a support rod 4, respectively. The lower laminated body 17 is configured to form a laminated surface 19 on the upper end surface of its pedestal portion 18, which is narrower than the seal edge of the packaging bag, and to be heated by a heater 20. On the other hand, the upper bonding body 21 has a bonding surface 23 for the hanger formed on the lower end surface of the presser foot portion 22 that can be aligned with the pedestal portion 18, and a suction hole opened in this bonding surface 23. 24 communicates with an air intake path 25 formed in the longitudinal direction of the center of the bonded body 21. 26 is intake path 2
5 shows a flexible tube connected to 5.

Reference numeral 27 denotes an operation plate attached to the side surface of the adsorption type bonded body 21. This operation plate 27 is for opening and closing fingers in a hanger supply mechanism C, which will be described later, and has a cam surface 28 formed obliquely on its outer surface. In the pasting mechanism B, conditions such as movement of both the pasted bodies 17 and 21, alignment of the pasting surfaces 19 and 23, and contact ranges are set to be the same as those for the sealing mechanism A described above.

The supply mechanism C is composed of a hanger standby holding part and a feeding part. First, in the standby holding part, a support body 29 is fixed at a predetermined position of a part of the machine body outside the moving range of the suction bonding body 21. A pair of rotation shafts 30 are supported by this support body 29.
Both shafts 30 have arms 31 and 32 at their outer ends connected by a rod 33, so that a cam plate 34 attached to the inner end of one rotating shaft 30 can be pushed by the operation plate 27. At the same time, they rotate in sync with each other. 35
36 is a stopper. A pair of fingers 37 is attached to the inner end of each of the rotation shafts 30 described above. Both fingers 37 are arranged in alignment with the feeding center of the packaging bag during the descending process of the suction bonding body 21, and are mutually formed into an L shape to match the target hanger.

On the other hand, the feeding section includes an upper plate 39 extending from the feeding section outside the packaging machine and having its front end attached to the lower surface of the support 29, and guide rods 40, 41 on both sides.
A feeding path 43 is formed by the lower plate 42 and the lower plate 42, and the hook fed from the feeding section is guided forward using vibration. The front end of the upper plate 39 protrudes inward from the support 29, and a U-shaped opening 44 is formed in the center of the upper plate 39 into which the holding base portion 22 of the suction bonding body 21 can enter without interference, and the holding pieces 45 on both sides
and the receiving piece 38 of each finger 37 to hold the hanger. 46 is a stopper attached to the end face of each holding piece 45. 47 is a conveyor for delivering the cylindrical film and the packaging bag.

In addition, in this example device, in order to be able to attach the hanger to packaging bags of various lengths, with the sealing mechanism A as a reference, the attaching mechanism B uses bolts, long holes, etc. as the actuating body. It is possible to set each arm 16 at a predetermined position based on the position change of each arm 16 with respect to 1 and the position change of the support body 29 with respect to the machine body side in the supply mechanism C. As for the hanger, its shape, material, etc. may be selected as appropriate. In this example, a synthetic resin film is pasted onto the surface of the cardboard material, and the hook portion 50 is bent onto the adhesive piece 49 corresponding to the edge of the seal. The hook 48 is shaped like this.

In this example, a bag with a hook can be manufactured by the cooperation of the mechanisms A, B, and C of the bag-making apparatus configured as described above, and one bag-making process will be described in detail. That is, the end seal mechanism A and the pasting mechanism B are operated simultaneously as the upper and lower actuating bodies 1, 1 rotate in synchronization. First, in the sealing mechanism A, in the process of the upper and lower sealing bodies 5, 5 aligning and abutting each other and rotating through a sealing range of a predetermined angle, the cylindrical film F is moved between the first and second sealing surfaces 8, 9. The seal substitute part is sandwiched and sealed, and then cut with a knife 12. As a result, as shown in Fig. 3, the above-mentioned seal substitute part has a ratio of approximately 1: ₂ between the rear seal edge S2 on the front bag side and the front seal edge _S1 on the rear bag side (cylindrical film side). Cut to length ratio. From then on, both seal bodies 5
End seal for the cylindrical film every revolution,
A cutting action is performed to form a bag _F1 with the articles enclosed therein, and the bag is forwarded to the next pasting mechanism B.

In mechanism B, which performs the hook pasting operation at the same timing as the sealing operation described above, both the pasting bodies 17,
21, when the suction-type bonded body 21 has moved to a position of about 130 to 140 degrees from the upper end point, the presser foot part 22 moves to the opening 4 in the feeding part of the feeding mechanism C.
4 and held by the fingers 37 is suctioned onto the bonding surface 23 through the suction hole 24. (See FIG. 9) As the bonded body 21 descends, the operation plate 27 rotates the cam plate 34 clockwise in the figure with the cam surface 28, thereby pushing open the fingers 37 and releasing the hook 48. do.

Then, the pasting body 21 rotates downward while adsorbing the hook 48, aligns with the lower pasting body 17, and transfers the pasting range at a predetermined angle at the same speed as the packaging bag _F1 , as shown in FIG. Then, the front seal edge S ₁ of the packaging bag F ₁ and the adhesive piece 49 of the hook 48 are held between the bonding surfaces 19 and 23 of the pedestal part 18 and the presser part 22 and welded together under pressure. Accordingly, a packaging bag with a hook as shown in FIG. 10A can be manufactured.

In particular, in this example, due to the structure of both seal bodies 5 of the end seal mechanism A described above, the seal substitute part between the front and rear bags is not made unnecessarily long and is kept to the necessary minimum length, and the front seal edge is Since S ₁ is formed long and effectively to form the edge of the seal for attaching the hook, in the attaching mechanism B, the hook 48 can be attached well to the front seal edge S ₁ without any interference between the two attached bodies 17 and 21 and the bag or the product. obtain. Also, based on the position selection of the pasting and feeding mechanisms B and C, the hook can be aligned and pasted at a predetermined position on the front seal edge _S1 for both large and small, long and short bags, and the hook 48 can be selected to have an arbitrary shape. cutlet knife 12
If the operation timing of the cylinder 51 of the first cylinder 51 is changed, the first
It is also possible to manufacture a multiple bag with a hook, in which a large number of bags are connected in series and a hook 48 is attached to the seal edge _S1 at one end, as shown in Figure 0B. In addition, in the pasting mechanism B, the hook is held by air suction, so that the transfer speed of the suction pasting body 21,
Since the hook can be held stably at all times without being hindered by the natural vibrations of the machine body, it is possible to stick the hook accurately without causing any displacement of the hook even under continuous high-speed operation. However, if the adhesive piece 49 of the hook is coated with glue or the like in advance, the heating means of the pasting mechanism B is not necessary and the adhesive piece 49 can be firmly crimped.

Note that this example device can of course be applied to a vertical pillow packaging machine, and if necessary, the end seal, the operation form of the pasting mechanisms A and B, the seal body 5, and the bonding body 1 may be modified.
7, 21, the structure of the supply mechanism C may be changed as appropriate. If both mechanisms A and B are of the type that moves the sealing body 5 and the bonding bodies 17 and 21 in opposition to each other, the hanger holding means is not limited to the above-mentioned air suction type, but also a clamp type or the like. Then, the hanging tool may be set to standby and be held at a position before the alignment and abutment of both the bonded bodies 17 and 21. Further, the feeding of the hanger may be carried out by mechanical means.

Now, the present invention is equipped with a pasting mechanism installed in the middle of a packaging bag supply line and a supply mechanism that supplies a hook to this mechanism at an appropriate timing. A bonded body is arranged on both sides corresponding to the packaging bag, and both bonded bodies are set to be able to operate in synchronization including a position where they align and come into contact with each other and a position where they are separated from each other in accordance with the feeding timing of the packaging bag. Then, a holding member for a hanger is installed at the outlet of the supply path which is connected to the supply section side and faces the supply line of the packaging bag, so that it faces over the moving process of the one bonded body. The holding member is set to be switchable to a state in which the hanger is held in standby when the two bonded bodies are separated, and to a state in which the hanger is released when the two bonded bodies are brought into alignment. By configuring the hanger so that it can be delivered to one of the pasting bodies during the alignment and abutting process, it is possible to synchronize the operation of both pasting bodies in the pasting mechanism installed in the middle of the packaging bag feeding line and to hook the pasting mechanism side. By cooperating with a supply mechanism that supplies ingredients at appropriate timing, the hanger held by the holding member at the outlet of the feeding path is pasted to the pasting edge (seal edge) of the packaging bag. This is fundamentally different from the conventional technology, in which the hanger is attached in advance to the band-like material that is the material of the packaging bag, and it is possible to attach the target hanger to the predetermined position of the packaging bag to prevent it from shifting or deforming. It can be pasted accurately and avoided.

In particular, in the apparatus of the present invention, the operation of both the pasting bodies of the pasting mechanism is synchronized with the feeding timing of the packaging bag, while the timing of the hook feeding operation of the supply mechanism is set for the pasting body, and the hanging hook is Since the transfer can be carried out during the alignment and abutment process of the two bonded bodies, the hanger can be properly attached to the packaging bag even when the machine is operating at high speed.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a schematic front view of the device of the present invention, Fig. 2 is a side view,
Figures 3 and 4 are sectional views showing the sealing body and the bonded body, Figure 5 is a side sectional view of the suction type bonded body, and Figure 6.
FIG. 7 is a perspective view and a plan view showing the main parts of the supply mechanism;
FIGS. 8 and 9 are sectional views taken along lines - and - in FIG. 7, and FIGS. 10A and 10B are perspective views illustrating a packaging bag with a hook, respectively. 1... Working body, 17, 21... Pasting body, 19, 23
...Lamination surface, 37...Finger, 43...Feeding path, 4
8... Hook, B... Pasting mechanism, C... Supply mechanism, F ₁
...Packaging bag, S ₁ ...Front seal edge.

Claims (1)

[Claims] 1.Equipped with a pasting mechanism installed in the middle of a packaging bag supply line and a supply mechanism that supplies the hanger to this mechanism at an appropriate timing, and in the pasting mechanism, both sides corresponding to the pasting edge of the packaging bag are provided. A bonded body is disposed in the packaging bag, and both bonded bodies are set to be able to operate in synchronization, including a position where they align and contact each other and a position where they are separated, in accordance with the feeding timing of the packaging bag. A holding member for a hanger is provided at the outlet of the supply path connected to the side and facing the supply line of the packaging bag, and is placed over the moving process of the one bonded body, and regarding this holding member, When the two bonded bodies are separated, the hanger is held in a standby state;
Further, when the two bonded bodies align and abut, the hook can be switched to a released state, and the hook can be transferred to one of the bonded bodies during the alignment and abutment process of both bonded bodies. A bag making device for bags with a hanger.