JPH0447042Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to an article holding device in a bag making machine, and more specifically to an article feeding device for conveying small and lightweight articles such as rice crackers. It is installed close to a bag making machine that makes bags from packaging film that is installed on the conveyance side and drawn out at a lower speed than the transfer speed of the article feeding device, and suppresses the packaged items moving in the bag making machine and keeps it in a stable state. The present invention relates to a device for conveying.

<Prior Art> As an article holding device in a conventional bag making machine, the one disclosed in Japanese Utility Model Publication No. 47-22921 is known.

In this known device, a swinging rod is rotatably supported on the outlet side of the bag making machine body, a trochanter is attached to the lower end of the swinging rod, and the trochanter is always in contact with the top surface of the packaged object. It is biased by a spring to obtain the desired effect. As a result, excessive speed due to the inertia of the packaged items that are sent into the bag-making machine main body at regular intervals is removed by contacting the trochanter, and the packaged items are kept in a fixed position while being transferred to the next stage seal cutter section. They send it in.

In addition, due to the recent demand for individual packaging, in the past, many items were hermetically sealed in one bag. It became common practice to store things inside.

As a result, there is a large difference in the size and shape of the object to be packaged, and in order to make bags for such objects with a single bag-making machine, the shape of the bag-making machine must be determined according to the large object to be packaged. Therefore, for small items to be individually packaged as described above, the overall length of the bag making machine becomes longer than that of the items.

<Problems to be solved by the invention> However, in the conventional article restraining device as described above, the trochanter is elastically urged downward by a spring to restrain the article to be packaged. However, it was necessary to change the strength of the spring depending on the type of packaged item. In addition, the trochanter is rotated by the friction generated when the object to be packaged comes into contact with the trochanter, and then passes below the trochanter and is aligned at a predetermined interval, so that the object to be packaged, for example, In the case of a lightweight object such as a small rice cracker, the frictional force generated when the rice cracker contacts the trochanter is extremely small, so the force that causes the trochanter to rise against the spring or rotate it is extremely weak. Become. Therefore, it is extremely difficult to adjust the spring and select a trochanter with an appropriate weight, and this conventional article holding device cannot be applied to lightweight articles such as rice crackers.

Furthermore, the above-described article holding device is disposed only at an upper portion on the exit side of the bag making device. That is, the top surface of the bag making machine was located at the upper part on the entrance side of the bag making machine, and there was no article holding device.

Then, as mentioned above, the small articles fed into the bag making machine by the article pushing finger, which moves at a faster speed than the packaging film, cannot be transported because the total length of the bag making machine is longer than the length of the packaged object. Once separated from the pushing finger, it once slides on the film in the bag making device due to inertia and is held down by the article holding device at the exit side of the bag making device. That is, the object to be packaged is free from both the pushing finger and the object holding device for a certain period of time.

Then, due to variations in weight between the items to be packaged, the inertia force will vary, and the slipperiness on the film in the free state will vary, the moving speed will vary, and the amount of slippage on the film when the item to be packaged is held down by the item holding device will vary. The relative positions will vary.
As a result, the end seal device in the latter stage seals and
When cutting, the sealer may get caught, making it impossible to wrap the product correctly.

The present invention was developed in view of the above-mentioned problems, and its purpose is to provide an article holding device in a bag making machine suitable for packaging small and lightweight articles while maintaining them at predetermined intervals. It is in.

<Means for Solving the Problems> In order to achieve the above object, according to the article holding device in a bag making machine according to the present invention, the total length of the bag making machine is set to be longer than that of the object to be packaged. In addition, the upper surface is opened over the entire length in the longitudinal direction. A rotating means that rotates at substantially the same speed as the moving speed of the film is provided at the upper opening of the bag making machine from the inlet side to the outlet side. Further, the rotating means is provided with a flexible member such as a sponge or a brush, and the article to be packaged is fed into the bag making device by the pushing finger of the article feeding device, just before it leaves the pushing finger. It was held down from above and moved at the same speed as the film.

<Operation> The object to be packaged is conveyed at predetermined intervals by the pushing fingers. This conveyance speed is higher than that of the packaging film. After the conveyed objects to be packaged are sequentially fed into the bag making device, they are separated from the pushing fingers and thereafter moved together with the packaging film.

At this time, the packaged items sent into the bag making machine are
Immediately before it separates from the pushing finger, it is held down by a flexible member with a light touch from above and positioned, so it does not become free in the bag making machine, and the inertia on the film in the bag making machine is maintained. Due to this, it will not skid.

Therefore, the object to be packaged separated from the pushing finger is conveyed at the same speed as the moving speed of the flexible member, that is, the moving speed of the packaging film. The packaged items are conveyed at a predetermined distance within the film and are accurately positioned within the packaging film.

<Embodiments> Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Article feeding device 2 for small and lightweight packaged items 1 such as rice crackers shown on the left side in FIGS. 1 and 2
consists of an endless chain 3 and pushing fingers 4 attached to it at predetermined intervals, and this endless chain 3 is rotated at a predetermined speed by a sprocket 6 attached to a drive shaft 5. Each pushing finger 4 is adapted to run while protruding upward from between the left and right guide frames 7-7, and moves the packaged articles 1 placed on the frame 7-7 forward while maintaining a predetermined interval. to be sent to

A bag making device 8 having a total length longer than the length of the article to be packaged 1 is provided in front of the article feeding device 2.
A packaging film 9 is inserted into the bag making device 8 from above.
The moving speed of the film 9 is slightly slower than the traveling speed of the pushing finger 4.

This bag making device 8 consists of a pair of left and right frames 10-10 that can be moved and adjusted in the width direction, and each frame 10 has an L-shaped cross section with an open upper end, and the top surface of the bag making device 8 is oriented in the longitudinal direction. It is open throughout. A holding plate 12 is fixed to the outside of the center of the side wall 11a of each frame 10, and a first block 13 is fixed to the front of this holding plate 12 (on the right side in the figure). A square hole 14 is provided through the first block 13 and is inclined in the horizontal plane so that the rear side is located outside.
5 is inserted, thereby the first block 13
is slidable along the first square rod 15. Furthermore, this first square bar 15 is mounted on a base plate 17 via a stud 16, and this base plate 17 is fixed to a machine frame 18. Therefore, when the first block 13 is slid backward along the first square bar 15, each frame body 10 moves outward while sliding backward, and the left and right frames 10 have mutual contact with each other. It will move in the direction of expansion.

Further, a front end portion of a second square bar 19 is fixed to the rear outer surface of each of the holding plates 12, and the second square bar 19 is inclined in a vertical plane so that the rear side is located on the upper side. Two blocks 20 are slidably inserted. This second block 20
A vertical film guide plate 21 is attached to the inner surface of the camera. This film guide plate 21 is located inside the side wall 11 of the frame 10, and a horizontal guide claw plate 22 is attached to its rear end. Therefore, when the second block 20 is slid backward along the second square bar 19, the film guide plate 21
moves upward.

The bottom plate 11b of each frame 10 has its rear part cut out diagonally from the rear end toward the front inside, and both bottom plates 11
The rear end of b-11b is V-shaped. Also,
The lower portion of the rear end of each film guide plate 21 is cut off at an inclined angle α, as shown in FIG.

Since the bag making device 8 is configured as described above,
Packaging film 9 supplied from above the bag making machine 8
The central part thereof is guided by the lower surface of the claw plate 22-22 of the film guide plate 21-21, and the both sides thereof are guided by the V-shaped inclined part of the bottom plate 11b-11b of the frame plate 10-10, and gradually The film is formed into a cylindrical shape, and both ends of the film protrude downward from the gap between the bottom plates 11b-11b of the frame plate 10-10, and are brought together in a shape of palms in front of the bag-making device 8 in the direction of travel, as shown in the figure. They are continuously welded by the omitted vertical sealing device.

Since the bag making machine shown in this embodiment is adjustable in the width direction and the vertical direction, the first block 13-13 is adjusted to the first The distance between the frame body 10-10 and the film guide plate 21-21 may be widened by moving the frame body 10-10 and the film guide plate 21-21 rearward along the square rod 15-15. Furthermore, when the height of the object to be packaged is high, the second block 20-20 may be moved rearward along the second square rod 19-19 to raise the film guide plate 21-21.

Incidentally, even when the length of the bag making device in the front and back direction is adjusted, the article feeding device 2 for the packaged items remains unchanged and is not adjusted. Therefore, when the bag making device 8 is extended rearward, the article pushing finger 4 goes deep inside the bag making device 8.

In the present invention, as described above, a bag making device whose upper surface is open over the entire longitudinal direction is provided with an article holding device. It has an endless belt 24 extending to. This endless belt 2
4 is wound between a driving pulley 25 at the front and a driven pulley 26 at the rear, and the driven pulley 26 can be displaced rearward according to the longitudinal length of the article 1 to be packaged. A sponge 27 is attached to the endless belt 24 over its entire surface, and the traveling speed of the sponge 27 is equal to the moving speed of the packaging film 9. The endless belt 24 is positioned slightly forward of the frontmost end of the article transporting finger 4 so as to contact the upper surface of the bag-formed packaging film and press it downward.

Since the article holding device 23 is configured as described above, the article to be packaged is fed into the bag making device 8 by the pushing finger 4 of the article feeding device 2 at a speed slightly faster than the moving speed of the packaging film 9. 1 is in a state where the packaging film 9 is immediately held down by the sponge 27 from above, that is, the rear surface and the top surface are temporarily held down and position regulated by the article pushing finger 4 and the sponge 27, respectively. is placed on the packaging film 9, and the pushing finger 4
When it leaves the packaging film 9, it is sent forward at the same speed as the packaging film 9.

Incidentally, in the above embodiment, an example of a sponge attached to an endless belt as an article holding device was explained, but a brush may be attached to a flexible member other than a sponge, for example, a support member installed between a pair of left and right endless chains. It may also be retained.

Further, in the embodiment shown above, the sponge attached to the endless chain is parallel to the transport path of the packaged items, but the front part of the sponge may be separated upward from the packaging film.

<Effects> As described above, with the article holding device in the bag making machine according to the present invention, even if the article to be packaged is short, small, and light compared to the total length of the bag making machine, such as rice crackers,
Immediately after being fed into the bag making machine, the bag is held down with a light touch from above and positioned, so that it does not become free in the bag making machine.

As a result, the items to be packaged are conveyed while maintaining a predetermined interval in the packaging film, and the items to be packaged are not caught between the end sealers during the subsequent end sealing process. The device can accurately position objects in a packaging film.

[Brief explanation of drawings]

1 is a plan view showing an article holding device in a bag making machine according to an embodiment of the present invention, FIG. 2 is a side view of the device shown in FIG. 1, and FIG. 3 is a side view of the device shown in FIG. 1. FIG. 3 is a perspective view of main parts. 1... Item to be packaged, 2... Article feeding device, 4...
Article pushing finger, 8... Bag making machine, 9... Packaging film, 24... Endless belt, 27...
...Sponge (flexible member).

Claims (1)

[Scope of Claim for Utility Model Registration] Packaging film is supplied to a bag-making machine to make bags, and the bag-making machine is fed with a pushing finger of an article feeding device that moves at a higher speed than the supply speed of the packaging film. A package in which a small and lightweight object to be packaged, such as a rice cracker, is fed into the packaging film, and the edges of the packaging film are brought together in the shape of palms in front of the bag-making machine in the direction of travel and are heat-sealed. The bag making machine is used in a machine, the total length of the bag making machine is set to be longer than that of the object to be packaged, and the upper surface thereof is opened over the entire length in the longitudinal direction, and the inlet side of the bag making machine is A rotating means that rotates at approximately the same speed as the moving speed of the film is provided in the upper opening extending from the film to the exit side, and the rotating means is provided with a flexible member such as a sponge or a brush, and the pushing finger of the article feeding device is provided with a flexible member such as a sponge or a brush. In a bag making machine, the packaged article fed into the bag making machine is held down from above just before it leaves the pushing finger and moved at the same speed as the film. Article holding device.