JPS5913374B2 - Bag-making method and device for bags with hangers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method and apparatus for making a bag with a hanger, and more specifically, the present invention provides a method and apparatus for making a bag with a hanger. It relates to a bag making method and its equipment that attaches ingredients.
The present invention efficiently manufactures a bag with a good-looking hanger by accurately pasting a target hanger at a predetermined position on the seal edge 15 of the bag while forming a seal on a packaging bag in which goods have been sealed. The purpose is to

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

In this example, the horizontal pillow packaging machine is also called a horizontal pillow packaging machine.
An example of a packaging machine is shown, and the bag making device is described below.
An end sealing mechanism A for the center-sealed cylindrical film F filled with items, an applicator mechanism B that operates in synchronization with the sealing mechanism A to attach a hook to the seal edge of the packaging bag F1, and an attaching hook 5. The supply mechanism C supplies the hooks to the mechanism B one by one. First, in the end seal mechanism A, actuating bodies 1, 1 are connected to upper and lower crank mechanisms (not shown) that are connected to each other to perform synchronized non-uniform speed operation. Upper and lower arms 2 extending perpendicular to the feeding direction
, 2, the support 3 and the support rod 4 have a pair of upper and lower seal bodies 5.
, 5 are removably attached.

Both seal bodies 5 have first and second seal surfaces 8 on the blade edges □ and 7 on both sides, with a V-shaped groove 6 formed in the center in the width direction so that the opposing parts have a W-shaped cross section. , 9 are formed parallel to the longitudinal direction. It communicates with the groove 6 of the lower seal body 5. The slot 10 is used as a socket for a knife, and the slot 111fC communicating with the groove 6 of the upper seal body 5 is a slot for the knife 12.
is inserted adjacent to the first sealing surface 8.

The knife 12 is attached to a cylinder 5 installed on the arm 2.
A holder 13 connected to the rod 52 of 1, and an opening/closing holding piece 1 placed on both sides of the holder 13 via pins and springs.
4, and is set such that its cutting edge normally waits above the upper sealing surface and is lowered by the operation of the cylinder 51. 15 indicates a heater.

Note that the upper seal body 5 is attached to the rod 3a1 nut 3 of the support 3.
It is held so that its position can be adjusted using the spring 3c, and can be moved upward using the spring 3c. As a result, both seal bodies 5, 5 are aligned and in contact with each other with their seal surfaces 8, 9 at a position matching the height of the cylindrical film (for example, 1/2), and the rotation angle range (seal (also referred to as a range), the peripheral speed is set to be the same as the film feeding speed. On the other hand, the cylinder 51 of the knife 12 can be set to operate 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. be.
In the pasting mechanism B, which is arranged in parallel with the sealing mechanism AVC at a predetermined interval (distance), a pair of pasting bodies 17, 21 are attached to upper and lower arms 16, 16 extending from predetermined positions of the respective actuating bodies 1, 1. are removably attached 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 bonded body 21 is
A bonding surface 23 for the handling tool is formed on the lower end surface of the presser foot portion 22 that can be aligned with the cradle portion 18, and a suction hole 24 opened in the bonding surface 23 is inserted in the longitudinal direction of the center of the bonded body 21. It communicates with an intake passage 25 formed in the. 26 indicates a flexible tube communicating with the intake path 25.

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 a finger in a hanger supply mechanism C, which will be described later, and has a cam surface 28 on its outer surface.
is formed obliquely. In addition, in such pasting mechanism B,
Conditions such as movement of both bonded bodies 17, 21, alignment of bonding surfaces 19, 23, contact range, etc. are set to be the same as those on the sealing mechanism A side 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. This support 29
A pair of rotation shafts 30 are supported on the.

Both shafts 30 have outer arms 31 and 32 connected to each other by a rod 33, so that when the cam plate 34 attached to the inner end of one rotating shaft 30 is pushed by the operation plate 27, , rotate in sync with each other. 35 is a spring, and 36 is a stopper.

A pair of fingers 37 is attached to the inner end of each rotating shaft 30 described above. Both fingers 37 are aligned with the feeding center of the packaging bag during the downward movement 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, 4 on both sides.
1 and the lower plate 42 form a feeding path 43, which is configured to advance and guide the hanger fed from the feeding section using vibration.

Then, the front end of the upper plate 39 protrudes inside the support body 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 interfering with the holding pieces 4 on both sides.
5 and the receiving piece 38 of each finger 37 to hold the hanger. Reference numeral 46 denotes 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 this example device, in order to be able to attach hangers to packaging bags of various lengths, the attachment mechanism B operates using bolts, elongated holes, etc., with the sealing mechanism A as a reference. It is possible to set each arm 16 at a predetermined position based on the position change of each arm 16 with respect to the body 1 and the position change of the support body 29 with respect to the 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. The bag making method of this example is based on each mechanism A and B of the bag making apparatus configured as described above.
, C can produce a bag with a hook, and one bag-making process will be described in detail.

That is, the end seal mechanism A1 and the pasting mechanism B are operated simultaneously with the synchronized revolution operation of the operating bodies 1, 1 under the ground. 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 portion 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). It is truncated by length ratio. Thereafter, the end seal cutting action is performed on the cylindrical film every time both seal bodies 5 revolve in the same manner, and the bag F1 with the product enclosed therein is formed and sent to the next pasting mechanism B side. In mechanism B, which performs the hook pasting operation at the same timing as the sealing operation described above, both the pasting bodies 17, 2
1, when the suction-type bonded body 21 moves to a position of about 130 to 140 degrees from the upper end point, the presser foot part 22 enters the opening 44 in the feeding part of the feeding mechanism C. The hook 48 held by the finger 37 is inserted into the suction hole 24.
It is adsorbed to the bonding surface 23 via. (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 opening the hook 48. release. Then, the pasting body 21 rotates downward while adsorbing the hook 48, aligns with the lower pasting body 17, and moves through the pasting range at a predetermined angle at the same speed as the packaging bag F1, as shown in FIG. Cradle part 1
8 and the presser foot part 22, the packaging bag F is
By sandwiching the front seal edge S1 of the hook 48 and the adhesive piece 49 of the hook 48 and welding them under pressure, 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 S1 is formed long and effectively to form the seal edge for attaching the hook, the attaching mechanism B can successfully attach the hook 48 to the front seal edge S1 without any interference between the two bonded bodies 17, 21 and the bag or article. 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. By changing the timing of operation of the cylinder 51 of the knife 12, it is also possible to manufacture multiple bags with hooks, in which a large number of bags are arranged in a series and a hook 48 is attached to the seal edge S1 at one end, as shown in the opening in Figure 10. . Moreover, in the pasting mechanism B, the hook is held by air suction, so that the hook can be held stably at all times without being hindered by the transfer speed of the single suction bonding body 21, the natural vibration of the machine body, etc. It can be applied accurately even in cases where the hook does not shift or the like occurs. However, if the adhesive piece 49VC is coated with glue or the like in advance, the heating means of the pasting mechanism B is not required and the adhesive piece 49VC can be firmly crimped. It should be noted that the method and apparatus of this example can of course be implemented in a vertical pillow-type packaging machine and a packaging machine that makes D-shaped bags from a strip film and packages flat articles. Operation form of mechanisms A and B, seal body 5, bonding body 17, 2
1. The structure of the supply mechanism C may be changed as appropriate.

Both mechanisms A and B are the seal body 5 and the bonding bodies 17 and 2.
1, in which the hooks 17 and 21 are moved in opposition to each other, the hook holding means is not limited to the above-mentioned air suction type, but may also be a clamp type, etc., and hung at a position in front of the alignment contact between the two bonded bodies 17 and 21. What is necessary is just to set it to hold the ingredients on standby. Further, the feeding of the hanger may be carried out by mechanical means. Further, in the above embodiment, the pasting mechanism and the supply mechanism are arranged at the rear position of the sealing mechanism, but the present invention is not limited thereto. If the packaging machine has a sealing edge on the side, it is also possible to arrange the application mechanism and the feeding mechanism at a position in front of the sealing mechanism. Now,
The bag-making method of the present invention includes forming a packaging bag of a required length by performing a sealing operation and a cutting operation on a seal substitute portion of a cylindrical film filled with articles using a sealing mechanism in a cylindrical film feeding line. The applicator mechanism located at a predetermined distance from the seal operating position operates to attach the hanger to the packaging bag, and the hanger, which is sequentially fed from the supply section, is placed in a position where it can be aligned with the seal edge of the packaging bag. Each operation step is to hold the hanger in front of the bag and hold it in standby, and to receive the hanger in front of the alignment contact during the movement process of both pasting bodies of the pasting mechanism, and to clamp and paste the hanger with the seal edge of the packaging bag when they come into contact. The purpose of this project is to manufacture bags with hangers based on the following.

Therefore, the method of the present invention is fundamentally different from the conventional method, in which hooks are attached in advance to the band-shaped film, which is the material of the packaging bag or cylindrical film, at the packaging start stage before forming these materials. Since the attachment is attached at the final stage of packaging, the target attachment is placed at a predetermined position on the seal edge of the packaging bag, which has a fixed shape and a stable length after the product has been sealed. It is possible to paste accurately while avoiding misalignment, deformation, etc.

Moreover, by arranging the sealing operation and pasting operation described above at predetermined intervals, the timing between both operations can be set accurately even during high-speed operation, and wasted operation time can be eliminated. To efficiently manufacture a bag with a hanger that looks good. Furthermore, the bag making apparatus of the present invention, which is implemented in the bag making method described above, includes a sealing mechanism installed on the feeding line of the cylindrical film, an attaching mechanism that operates to attach a hook, and a sealing mechanism installed on the feeding line of the cylindrical film, an attaching mechanism that operates to attach a hook, and a sealing mechanism installed on the feeding line of the cylindrical film; A bag with a hanger that looks good can be manufactured by accurately attaching a hanger to the seal edge of a packaging bag that has been sealed and cut based on cooperation with a supply mechanism that feeds the hanger.

In particular, in the device of the present invention, the sealing mechanism and the pasting mechanism are arranged in parallel at a predetermined interval, and both sealing bodies and pasting bodies are set to operate in parallel with each other. The whole device can be made compact by making the body etc. common, and even when the machine is operated at high speed, it is possible to accurately attach the hanger to the packaging bag by eliminating timing errors between the two machines.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a schematic front view of the apparatus of the present invention, Fig. 2 is a side view, and Figs. 3 and 4 are cross sections showing a sealing body and a bonding body. Figures 5 and 5 are side sectional views of the suction type bonded body, Figures 6 and 7 are perspective views and plan views showing the main parts of the supply mechanism, Figures 8 and 9 are straight lines in Figure 7, A sectional view taken along the + line and FIGS. 10A and 10B are perspective views illustrating a packaging bag with a hook, respectively. 1... Operating body, 5... Seal body, 12
... Knife, 17, 21 ... Bonded body,
37... Finger 1, 43... Feeding path, 48... Hook, A... End seal mechanism, B... Pasting mechanism , C... supply mechanism, F... cylindrical film, F1...
Packaging bag, S1... Front seal edge.

Claims (1)

[Scope of Claims] 1. A sealing mechanism equipped on a feeding line for the cylindrical film performs a sealing operation and a cutting operation by sandwiching the sealing substitute portion of the cylindrical film filled with the product from both sides. A pasting mechanism installed at a predetermined distance from the operating position is used to apply the hanger to the packaging bag, and the hangers sequentially fed from the supply section are aligned with the seal edge of the packaging bag as appropriate. In the process of moving both of the pasting bodies of the pasting mechanism, the pasting mechanism receives the hanger in front of the alignment abutment, and at the time of abutment, the hanger is pinched and pasted with the seal edge of the packaging bag. A bag-making method for a bag with a hanger, characterized by the following operating steps: 2. A sealing mechanism installed on a feeding line of a cylindrical film, a pasting mechanism that operates to paste a hanging device, and a supply mechanism that feeds a hanging device toward the pasting mechanism, and the sealing mechanism Seal bodies incorporating cutting means are arranged on both sides of the tubular film so that they can move in synchronization with each other, and the pasting mechanism feeds the packaging bag to a position at a predetermined distance from the sealing mechanism. Adhesive bodies are disposed on both sides of the feeding line, and in the feeding mechanism, a holding member for a hanger is provided at an outlet of the feeding path that is appropriately connected to the feeding section side and faces the feeding line of the packaging bag. A bag with a hanger, characterized in that the bag is equipped with a hanger so as to face the moving process of one of the bonded bodies, and the hanger held by the holding member is placed on standby in front of the point of contact between the bonded bodies. Device.