JPH01153437A - Cutting method for pouch in automatic feeder - Google Patents

Abstract

PURPOSE:To permit the selection of the types of feeders according to the variations of pouch without being affected by the interval between the successively fed pouches, by obtaining the pouch feed amount from the detection position of the pouches with their commodity bagging portions and sealing portions arranged alternately through subtraction or addition of one half of each length of a plurality of sealing portions preset and memorized from or to the distance between the sealing and cutting portions. CONSTITUTION:A pouch feed amount S from a pouch detection point is obtained by subtracting one half of length R of sealing portion 3 from the distance L between a pouch detection position 5 and a cutting position 4. The feed amount s1, s2 and s3 detected on individual pouches are successively stored and each of the memories is retained until the pouches are actually fed and cut and, on cutting, is renewed. Therefore, there is no need for making the distance L between the detection position 5 and the cutting position 4 the equimultiples of the feed interval which has no influence on the distance. If there are many types of the successively fed pouches, the different sealing lengths of different pouches are inputted into a computer, whereby the preset values of the sealing lengths are stored. In accordance with the preset values of the lengths, the types of the feeder can be selected by the pressing of a selection button.

Description

Detailed Description of the Invention (Field of Industrial Application) This invention relates to a continuous pouch containing powder, liquid or solid material, etc., which is cut into a desired container at the time of packaging. This relates to the cutting method of automatic loading machines.
More specifically, the present invention relates to a cutting method for an automatic pouch dispenser that can accommodate changes in the length of the sealed portion without being affected by the accuracy of the pitch of continuous pouches.

(Prior art) For example, an automatic pouch feeder is used to supply pouches containing various contents such as desiccant, soup stock bags, spice bags, etc. in synchronization with a packaging machine during filling and packaging of food. Ru.

Generally, this loading machine cuts a continuous pouch in which a storage part containing the contents and a sealing part that seals the storage part by thermocompression etc. are connected alternately at the center of the sealing part. It is necessary to supply each bag to a desired container or the like.

Conventionally, the thickness of the continuous pouch is read by a thickness detector, or a non-contact method such as a phototube is used to detect the position of the continuous pouch, that is, the cutting position at which the feeding of the pouch is stopped and the cutting device is activated. It was disconnected.

(Problems to be Solved by the Invention) Even with such conventional technology, it is possible to supply small bags, but due to its structure, the cutting position of continuous small bags is inaccurate, and the continuous form of small bags is There is a problem in that it cannot respond to changes in the pitch of the sachets.

In other words, since conventional cutting methods are based on the assumption that the pitch is the same, continuous pouches with irregular pitches cannot be used at all, and the pitch must also be accurate. Even when changing the pitch that occurs when switching models, etc., the thickness detection position, that is, the stop position must be changed by moving the thickness detection position, that is, the stop position, and this has the problem of poor workability.

In addition, continuous pouches are often used in many different types by changing models, but the length of the sealed part changes depending on the type, and the problem is that the cutting position must be adjusted each time. be.

(Means for Solving the Problems) In order to solve these problems, according to the present invention, a continuous pouch (1) in which storage portions (2) and sealing portions (3) are alternately continuous is provided. When the pouch detection position (5) is sent sequentially to cut the central part of the sealed part (3) and supply it to a desired container, etc.
The distance Ll from to the cutting position (4) is set and memorized, and the half length (R) of the sealing part (3) is added or subtracted from the distance #(L) to determine the amount of pouch delivery from the time of pouch detection ( In an automatic bag inserting machine that determines and stores Sl and sequentially cuts the sachets based on the memory, a plurality of lengths of the sealing part (3) are stored in advance, and the set values are changed according to changes in continuous sachets +11. There is provided a cutting method for an automatic pouch inserting machine, which is characterized in that a pouch can be selected.

(Function) By detecting the position of the pouch, that is, by detecting the boundary between the storage part (2) and the rear sealing part (3), for example, if the position is detected by the preceding part of the boundary, the position of the pouch can be detected from the detection position. The distance (Ll) to the cutting position is the amount of pouch delivery related to the detection, but the center of the sealed part (3), which is the cutting location, has already passed the detection position, and in this case, the delivery amount (Sl is It is necessary to draw a distance (half the length of the sealing part (3) from the mouth).

Since the detection position (5) is the same, this feed amount fs) is constant unless the length port changes, and is always valid for the pouch at the detection position (5) (the pouch related to the detection). be.

For example, the feed amount (S
lX5z) (Sl) is given to update the memory, and when the pouch is actually delivered by that amount, the delivery is stopped and cut.

In other words, the feeding amount (Sl) (s
z) (33) are sequentially given and stored, and each memory is held until the pouch is actually sent out and cut, and is updated as the pouch is sequentially cut.

Therefore, the distance (L) from the detection position (5) to the cutting position (4) does not need to be a multiple of the pitch and is not influenced by the pitch.

In addition, when the pinch is the same but the length of the sealing part (3) changes, or when both the pitch and the length of the sealing part (3) change, etc.
In response to changes in the type of continuous pouch (1), by setting and memorizing the length of the sealing part (3) for that type in advance, the length of the sealing part (3) for that type can be set and memorized, and the length of the sealing part (3) can be changed by simply selecting the setting when switching models. (
3) Can respond to changes in length, reducing work time for model switching.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings (11
is a continuous pouch having a sealed portion (3) of a constant length, the continuous pouch (11) having storage portions (2) with alternating contents, and a pouch (1a) to be cut in sequence. (lb)
(lc) (ld) (le) pitch (p+) (p
z) (P3) (P4) are irregular.

(4) is a cutting position where the cutter (7) cuts by opening and closing.

(5) is a pouch detection position where a roller thickness detector (6) consisting of a pair of movable rollers detects the thickness of the pouch storage section (2) and detects the position of the pouch.

Further, behind the pouch detection position (5) or between the detection position (5) and the cutting position (4), a feed roller (not shown) consisting of a drive roller and a driven roller for feeding the pouch is disposed. The amount of feed of the pouch can be detected based on the amount of rotation of this driven roller.

Note that the calculation of the above-mentioned feed amount is performed from the time when the detection signal at the pouch detection position (5) is output.

The detection signal at this pouch detection position (5) is input to a microcomputer (not shown), and is calculated and compared with the feed amount tsl. Based on the calculation process, the computer detects the feed roller and the cutter ( 7) should be controlled (output).

To explain the operation of a normal cutting process, at A in Fig. 1, the position of the first pouch (1a) has been detected, and if this detected position is used as a reference, the feed amount required for cutting ( Sl) becomes LR+.

In B, the position of the next pouch (1b) has been detected, and if this detected position is used as a reference, the feed amount (
Although S2) becomes LRz, the feed amount is still insufficient when using the above-mentioned pouch (1a) as a reference.

At C, the pouch (1a) is actually fed by the feed amount (S,) and the first excess sealing part is cut off.In this case, when the pouch (1a) is cut next, The remaining sending amount (vl) is insufficient.

In D, the position of the pouch (IC) has been detected, and if this detected position is used as a reference, the feed ffl
(S3) becomes L R3, and the above sending 1 (S+
It is the same amount as X5z).

At this point, the amount of feed necessary to cut the pouch (1a) is still insufficient for S cutting, and the cutter (
7) does not work.

At this point, the above-mentioned feed amount (S2) is actually fed out and the cutter (7) is activated to cut the pouch (1a), and from this point on, the next pouch (1b) is cut. The remaining feed amount (v2) is insufficient compared to the necessary feed amount (S3).

At F, the feed M (S3) is actually fed out and the cutter (7) is operated to cut the pouch (1b), and from this point on, the next pouch (1c) is cut. The remaining feed amount (v3) is insufficient compared to the required feed amount.

Then, each of the above remaining feed amounts (L)l)(L)l)
(L)3) is the same amount as each irregular pitch (PI) (Pz) (pi) of the continuous pouch (1),
As a result, each pinch (P+) (Pg) (Pg)...
・Sequentially disconnected in accordance with .

If there are many types of continuous pouches to be cut, in other words, uneven pitches are not a problem, but if there is a change in the length of the sealed part, the cutting position will change and abnormalities may occur. Since defects may occur due to cutting at certain positions or a decrease in product value, etc., the length of the sealed portion may be changed in advance as shown in Figure 2 (corresponding to this). (1-1) (1-2) (1-3)
are the different lengths of the sealing parts (3-1) (3-2)
(3-3), continuous pouches (1-4) (1-5)
have the same seal length (3-4).

The lengths of these different sealing parts (3-1) (3-2
) (3-3) (3-4) are each input to the microcomputer and processed and set as length settings (R-1) (R-2) (R-3) (R-4). The value is set and memorized.

And this length setting (R-1) (R-2) (R-
3) (R-4) can be selected using the selection buttons (Sga-1) (Sen-2) (SW-3) (SW-4), and when changing models etc., the continuous pouch (For example, 1
-2) by operating the selection button (for example, -2).

That is, as explained in FIG. 1, the length is determined and stored in advance according to the length of the sealed part, and as a result, the pouch delivery amount (S) is automatically determined by simply operating the selection button. becomes.

Note that the present invention is not limited to the above embodiments,
For example, to ensure cutting safety, a pitch variation range may be set in advance to prevent cutting outside that range, and in that case, the machine may be stopped or an alarm signal may be issued. Furthermore, it is optional that the set value may be automatically selected depending on the type of continuous pouch.

(Effects of the Invention) As explained above, the present invention allows continuous pouches to be cut accurately without being affected by pinching, and improves the finishing accuracy of the pitch of continuous pouches. Of course, it is possible to supply sachets accurately without being influenced,
By alternately storing a plurality of contents, continuous pouches with a plurality of pitches can also be accurately cut and supplied.

In addition, the distance from the pouch detection position to the cutting position can be arbitrarily determined, making it highly versatile in terms of the design of the feeding machine.In addition, the average value of the pitch can be calculated even when changing the type of continuous pouches. This improves workability and operability, such as eliminating the need to finely adjust the distance to cut.

Furthermore, the present invention can cut many types of continuous pouches with different lengths of sealed parts by simply selecting them automatically or manually, making it easier to change models and improve operating efficiency. This has the advantage that more precise cutting can be easily managed without the occurrence of setting errors caused by the cutting.

[Brief explanation of the drawing]

The drawings show an embodiment of the cutting method of the automatic pouch inserting machine according to the present invention, and FIG. 1 is an explanatory diagram of the operation, and FIG. 2 is an explanatory diagram. In the drawings, (1) is a continuous pouch, (2) is a storage part,
(3) is the sealing part, (4) is the cutting position, (5) is the pouch detection position, (6) is the roller thickness detector, (7) is the cutter, (Sl is the feed amount, Ll is cutting from the pouch detection position Distance to the position, (Pl is the pitch, M is the remaining amount of feed.Representative Patent Attorney Yuki KuroFE 0Figure 1

Claims (1)

[Claims] 1. When feeding a continuous pouch (1) with alternating storage parts (2) and sealed parts (3), cutting the central part of the sealed part (3) and supplying it to a desired container, etc., Detection position (5
) to the cutting position (4) is set and memorized,
Add or subtract half the length (R) of the sealed portion (3) from the distance (L) to obtain the amount of pouch delivery (S) from the time of pouch detection.
) is determined and memorized and the pouches are sequentially cut based on the memorized memory. A cutting method for an automatic sachet inserting machine, characterized in that a method can be selected according to the cutting method.