JPS60228206A - Automatic continuous packer - 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] This invention relates to improvements in automatic continuous packaging equipment.

A device that automatically wraps powder or granules, such as sugar, stomach powder, etc., in a stick-like packaging film is -
The conveyor is equipped with a cylindrical chute, and the tubular packaging film covered on this chute is intermittently conveyed vertically in fixed amounts, and correspondingly, the packaged items are dropped into the film from the cylindrical chute, and the upper and lower sides of the film are Packaging is carried out by heat welding, but in this case the packaging film is only fed intermittently, and the packaging film is forced to wait in a stopped position for the time it takes for the packaged object to pass through the cylindrical chute (height difference). However, there is a disadvantage that there is a lot of time loss and that high-speed mass packaging cannot be carried out.

In particular, fine powders such as gastrosan are highly buoyant and tend to fly up after falling to the bottom of the packaging film due to the above-mentioned head. Therefore, it is necessary to set the filling time by taking into account the time it takes for this to settle down. If this is not done, floating powder will get caught in the seal part of the packaging film, resulting in packaging errors, making high-speed, high-volume packaging even more difficult.

Therefore, the present invention is designed to allow sufficient time for the packaged object such as powder to settle stably at the bottom of the packaging film, while also allowing the packaged object to settle down stably at the bottom of the packaging film. The aim is to provide a packaging device that can perform high-speed, large-volume packaging, and also to easily change the length of the packaging film for one bag according to the size of the product, in other words, the amount of packaging, while using the same device. The purpose is to provide a device that can do this.

That is, the present invention provides a substantially horizontal circumferential movement path for a tubular packaging film, a film cutter for cutting the film carried into the path into required lengths, and a film cutter arranged at regular intervals along the movement path. a lower heat welding means disposed directly below each film clamp means, a packaged material filling section disposed at a fixed position on the moving path, and an upper heat welding means disposed directly above the moving path. and a welding means, the film clamping means and the upper
The lower heat welding means is constructed to circulate along the movement path, the film clamping means is rotatable horizontally, and the film is further clamped and fed to a portion where the film is introduced into the movement path. An automatic continuous packaging apparatus is characterized in that it is equipped with a pair of carry-in rollers and is configured such that the speed at which the film is carried in by the pair of carry-in rollers can be changed.

In FIG. 1, l is a forming pipe, and a band-shaped packaging film 2 is continuously supplied and gradually wound, and closed into a tube shape. The edges are sealed and the tubular packaging film 4 is formed. This mechanism is of well-known construction and will not be discussed further. The formed tubular film 4 has a first movement path (indicated by arrow P) around the vertical axis 01 in FIG. 1 and a second movement path (indicated by arrow F) around the vertical axis 02. is supplied to a substantially figure-eight horizontal circumferential movement path including a first movement path P
1, the tubular packaging film 4 is routed through the path F,
Immediately after being carried into the bag, packaging film is applied to each bag length, and then the packaging film alone is transferred to the second moving path, and the remaining other end (upper end) is sealed. After that, it is made into packaged products and discharged.

That is, in the first moving path Fl, a turntable 5 rotated about the vertical axis O1 as shown in FIGS. 1 and 2 is provided, and film clamping means are mounted on the turntable 5 at regular intervals. 6... are disposed radially, lower heat welding means 8 are arranged below the clamp head 7 of the means, and a pair of carry-in rollers 10 are provided at the position where the packaging film 4 is carried into the first moving path Fl. .10
is equipped, and the packaging film 4 is conveyed along the path FIKm at a speed corresponding to the rotational speed of the pair of carry-in rollers 10.10.

That is, a guide plate 11 is connected to the tip of the forming pipe 1 in a tangential direction with respect to the moving path 1i'-, and a window 12 as shown in FIG. 4 is provided in the guide plate 11. is rotated using drive and speed change means not shown.

The ivy 13 works to cut each bag into lengths. This film cutter 13 consists of a fixed blade 13a positioned to sandwich the packaging film 4 being carried in, and a rotating movable blade 13b.
These are mounted on a fixed frame 14.

The film clamping means 6 clamps the packaging film 4 carried into the moving path Fl at a suitable position prior to the cutting operation by the film cutter 13, and vertically holds the cut packaging film alone at point 0 in FIG. stand up,
Second movement route F! It functions to hold the packaging film alone until it is delivered to the customer. That is, as shown in FIGS. 5 and 6, in the film clamping means 6, a pair of clamp arms 15.15 are rotatably supported on a main body block 6a at their bases, and each of the clamp arms 15. Half-split head halves 7m and 7a are fixed to the tip facing each other. In addition, the main body block 6at Cor II
A fixed shaft 6bl - a roller 16.1 slidably inserted therethrough and located between the clamping arms 15.15 on this fixed shaft 6b;
6 is mounted on a shaft, and when the main body block 6a moves backward along the fixed shaft 6b by a cam mechanism or an air cylinder mechanism (not shown), the rollers 16 and 16 and the clamp arm 1
5゜】5 The clamp arm 15.15 opens as shown in Fig. 5 by cooperation with the inner cam surfaces 15a and 15m,
On the contrary, it is constructed so that it closes when it is closed. Therefore,
Although not shown between the two jimp arms 15 and 15,
Spring means are interposed for biasing the clamp arm 15.15 to rotate in the closing direction. Further, the film clamping means 6 is mounted on the turntable 5 so that the entire film clamping means 6 can be rotated around the horizontal axis using a cam mechanism or the like.

As shown in FIG. 7, the lower heat welding means 8 includes a pair of heaters 8a+8'' that open and close around a vertical shaft 17, and both heaters 8a and 8a are normally kept open by spring means not shown. 0 In addition, trochanters 18.18 are mounted on the bases of both heaters 8a, 8a, and a plate cam 19 is thrust between the trochanters 18.18, and the plate cam 19 rotates to rotate its large diameter portion. When pushing open both trochanters 18 and 18, both heaters 8a
, 3a are configured to close.

The filling chute 9 is mounted on a lifting rod 20 as shown in FIG. The equipped cam roller 22 is brought into engagement with a cam s24 on the fixed frame 23 side, and the cam groove 24 controls the lifting and lowering of the lifting rod 20 and the filling chute 9.

As shown in FIGS. 1 and 2, a weighing and filling section 25 for packaging objects is provided at a midway upper position of the first moving path v.

On the other hand, the second movement route F! As shown in FIG. 1, a turntable 26 that rotates about a vertical axis 02 is provided, and upper heat welding means 27 are provided on the turntable 26 at regular intervals. This means includes a fixed heater 27& and a rotary heater 27b that opens and closes with respect to the slot.
27b is supported by the support frame 28, and a cam mechanism is provided that rotates the rotary heater 27b around its support shaft 27cl. In this cam mechanism, a cam roller 30 is pressed against a fixed cam plate 29, and a bushing rod 31 is moved forward and backward. The upper heat welding means 27 grips the upper end of the single packaging film transferred from the first moving path F1 to the second moving path F with heaters 27 & 27b and heat welds the packaging film. Since the heaters 27 & 27b are suspended, the heaters 27 & 27b also protrude outward from the periphery of the turntable 26.

Next, to explain the packaging operation, after the strip-shaped packaging film 2 shown in FIG. 8(a) is formed, the tubular packaging film 4 shown in FIG. It is carried in from a direction tangential to route F. This loading is carried out by the rotation of the loading roller pair 10.10, and the loading speed is proportional to the rotation speed of the loading roller pair 10.degree. The clamp arms 6m, 6m of the film clamping means 6 are closed at point B in FIG. 1 with respect to the transported packaging film 4, and the packaging film 4 is clamped by the clamp head 7. Next, at the same time as this clamping time or after a slight time lag, the film cutter 13 cuts the packaging film 4 to a length equal to one bag, and when the clamping point in FIG. 8(c) is set as N1, this is N!・N, the length of one bag in between! A single packaging film 41 is formed. Therefore, the tubular packaging film 4 carried into the moving path F1 by the rotation of the packaging film 410.10 by changing the rotational speed of the pair of carry-in rollers 10.10 is naturally compressed. It does not swell into a circular shape like this. However, if the film 4 is clamped by the circular clamp head 7, the clamping force will automatically expand the film 4 from a flat state to a circular shape, which has the advantage of making the subsequent filling process smooth. Also, since the film cutter 13 works on the clamped packaging film 4,
Cuts beautifully and easily. Next, the film clamping means 6 is rotated 90 degrees while reaching the zero point, and the single packaging film 41 being clamped stands up as shown in FIG. The pair of heaters 8a, 8a is closed, and the lower end 41M of the upright packaging film 41 is sandwiched and thermally welded (Z) [Fig. Moreover, as is clear from FIG. Then, these objects sneak under the weighing table 32, and as one of the packaged object weighing pockets 33 synchronously overlaps the position directly above the filling chute 9, the first
At point E in the figure, a fixed amount of the object to be packaged is dropped into the filling chute 9, and is supplied and filled into the packaging film unit 41. The packaging film unit 41 then passes through the weighing table 32, and the receiver moves toward the transfer point. During this movement, the object to be packaged stably sinks to the inner bottom of the single packaging film 41, and even if the object to be packaged is a fine powder such as stomach powder, the time it takes to move from point E to point 9 is relatively long. By removing it, you can eliminate the powder biting during the next upper end sealing operation. Immediately before the packaging film unit 41 with the lower end 411 & filled with the packaged object reaches the delivery point, the filling shoe 10 rises and is removed from the filled packaging film unit 41. When reaching this transfer point, the film clamping means 6 opens the clamp head 7 and moves to the second moving path F! The upper heat welding means 27 passing through grips the upper end 41b of the filled packaging film unit 41 with its pair of heaters 27m and 27a, and at the same time the lower heat welding unit 8 opens, so that the filled packaging film unit 41 is attached to the second Travel route P'! While moving, the upper end portion is sealed, and at point H in FIG. 1, it is discharged as a packaged product as shown in FIG. 8 (f). Such wrapping operations are performed continuously.

In this way, the invention does not transport the tubular packaging film intermittently vertically as in the past, but in the process of continuously transporting the film along a circumferential path of approximately 1,000 rolls. The process of cutting the bag into lengths, standing them up, sealing the bottom end of the bag, placing the item to be packaged, and then sealing the top end is performed in a continuous manner. It is possible to perform high-speed, large-volume packaging.

In particular, since the filling operation of the packaged items is performed during the process of transversely transporting the single packaging film, even if the moving distance (filling time) from the start of filling to the completion of filling is long, during that time there will be other The filling operation can be applied to a single packaging film without interruption, and high-speed, large-volume packaging is not hindered in any way. Therefore, even if the product to be packaged is a fine powder such as gastrosan, the above-mentioned filling time is long, and during this time, the powder can be stably submerged inside the packaging film and the top end can be sealed, which can lead to packaging errors. This makes it possible to realize efficient mass packaging without any problems. In addition, the thermal welding time for a single packaging film can be as long as the filling time, regardless of the above-mentioned high-speed packaging, and the stable thermal welding prevents packaging errors from occurring. 1 Furthermore, the present invention carries the tube packaging film into the moving path using a pair of carry-in rollers that rotate while holding the film between them. By changing the transport speed of the film, the length of the packaging film cut by the film cutter for one bag can be changed. Therefore, there is an advantage that the most economical film-bag length can be selected according to the amount of the packaged items, and for this selection, it is only necessary to adjust the rotational speed of the pair of carry-in rollers, so special improvements can be made to the equipment. There is no need to add it to

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a schematic plan view of the entire structure, FIG. 2 is a longitudinal cross-sectional side view of the packing material filling section, FIG. 3 is an enlarged view of the main part of FIG. 1, and FIG. The figure is a side view of the main part of the guide plate, Figures 5 and 6 are explanatory diagrams of the operation of the film clamping means, Figure 7 is a plan view of the lower heat welding means, and Figure 8C ().
-(F) are diagrams for explaining the film forming operation process. 0 (Explanation of symbols) 4--Tubular packaging film, 6--Film clamping means, 8--Lower heat welding means, I O... Pair of carry-in rollers, 13-- Film cutter, 25-- Filling section, 27-- Upper heat welding means. one or more one

Claims (1)

[Claims] l) A moving path in the approximate circumferential direction of the tubular packaging film, a film cutter that cuts the film carried into the path into required lengths, and films arranged at regular intervals along the moving path. clamping means; lower heat welding means disposed directly below each film clamping means;
A packaged material filling section provided at a fixed position on the movement path;
an upper heat welding means disposed directly above the movement path, the film clamping means and the upper and lower heat welding means being configured to circulate along the movement path;
The film clamping means is rotatable around a horizontal axis,
Furthermore, an automatic continuous packaging device is provided with a pair of carry-in rollers that sandwich and feed the film (C film) to the above-mentioned moving path, and the speed at which the film is carried in by the pair of carry-in rollers can be changed.