JPH0436927B2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Purpose of the Invention (Field of Industrial Application) This invention is utilized in the technical field of automatically filling and packaging dough into tubes, and is particularly applicable to drawing out a strip of film from a raw material and forming it into a film. After forming the tube into a tube shape using a device, the tube is fed with a film feeding device while being filled with a dough from a dough supply device, and then the tube filled with the dough is tied at regular intervals with a ligating device. The present invention relates to a device that is attached to an automatic filling and packaging machine for pasted material that is ligated and cut into pieces, and that automatically discharges defective products that occur before and after the film joint and when starting and stopping the machine.

(Prior Art) Conventionally, when filling a dough, such as sausage, cheese, cream paste, or other dough such as grease, filling, feeding of a tube, and ligation of the tube after filling have been carried out. The speed of is fixedly set to an appropriate value, and after the equipment starts operating, various adjustments, such as adjusting the molding position of the tube, must be performed at the set speed.
The higher the set speed, the greater the loss of film during the adjustment process. Therefore, the set speed must be adjusted within a range that does not cause excessive film loss, which hinders the speeding up of the device. was. Furthermore, since filling is stopped for a certain length at the joint or end of the film, a large amount of film will be wasted if the film is fed at the above-mentioned set speed.

Therefore, in order to solve the above-mentioned problems, the applicant proposed in Japanese Patent Application No. 58-202417 a dough filling and packaging device that minimizes wastage of film and performs high-speed filling with high non-operating time. This device consists of a welding device that pulls out a strip of film from a raw material wound into a roll, forms a cylinder with a forming plate, and welds it to form a tube, and a filling pump that is continuously driven by a motor. a filling pump device that continuously discharges the dough into the tube through a supply pipe facing into the tube; a feeding roller device that compresses the tube and continuously feeds the tube by being driven by a motor; The tube filled with the material is reciprocated by a squeezing roller that forms a flat part where no kneaded material is locally present at predetermined intervals, and is driven by a motor to ligate and cut the flat part to form a single piece. In a dough filling and packaging device having a ligating device for obtaining a product, three motors, the motor of the filling pump device, the motor of the feed roller device, and the motor of the ligating device, each have an independent adjustment device whose speed can be adjusted independently of each other. and is connected to a switching device that allows the three motors to be adjusted simultaneously, and the switching device is connected to a switching device that allows the three motors to be adjusted simultaneously while maintaining the proportional relationship of their speeds when adjusted individually. It is characterized in that an interlocking adjustment device that can adjust the speed is connected.
According to such a device, the effect is extremely large in terms of both resource saving and production capacity.

However, in the case of the device based on the above patent application, there are no measures in place to separate defective products from good products, which occur when the machine starts and stops, and before and after the film splice, so the operator has to monitor the machine. However, the defective products must be removed manually.
There was still room for improvement.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned problems, and is capable of forming a film without stopping operation of the machine in an automatic dough filling and packaging machine having an automatic film splicing device. The purpose of this invention is to provide a device that automatically discharges defective products that occur before and after the joints of the machine and when starting and stopping the machine.

(2) Structure of the Invention (Means for Solving Problems) According to the present invention, the above-mentioned object is achieved by pulling out a film strip from an original film, forming it into a tube shape with a film forming device, and then kneading it into the tube. In an automatic pastry filling and packaging machine, the tube is sent out by a film feeding device while being filled with dough from a dough feeding device, and then the tube filled with dough is ligated at regular intervals by a ligating device and separated. , a raw film splicing device that detects the remaining amount of raw film and automatically connects it to the next film, and an optical joint between the raw film splicing device and the film forming device. Start counting the number of pulses from the time of input of the seam detection signal transmitted from the seam detection means and the seam detection means to detect, and control the operation of the kneaded material supply device and the ligation device with a predetermined number of pulses. In order to achieve this, a film movement detection device installed in a film feeding device that generates and counts a pulse signal proportional to the number of rotations of a film feeding roller, and a ligating device that operates in synchronization with a ligating device when ligating is not performed. This is achieved by having a defective product discharging means disposed at a downstream position and discharging the defective products without stopping film feeding.

The raw film joining means detects the end of one raw film and joins the starting end of the next waiting raw film to the above-mentioned end, but there are no limitations on its format. , as an example, a patent application filed in 1982-
184638, which has a film roll reduction detection device. This detection device is
This device measures the remaining length of a strip of film rolled around a bobbin, and is arranged so that one end is in contact with the outer diameter surface of the bobbin under elastic pressure. a rotatable first arm disposed such that one end thereof is in contact with the outer surface of the film material under elastic pressure; The sensor includes a sensor supported by the first arm and/or the second arm to detect when the distance between the two arms approaches a set value.

The seam detection means is located downstream of the original film splicing means in the film flow direction, and
For example, a format may be adopted in which the joints are detected optically.

The film movement amount detecting device is particularly useful if it is connected to, for example, a film feed roller or a motor therefor, and generates pulses proportional to the rotation speed of the rotating body by the rotation of the rotating body, which is proportional to the rotation speed of these rollers. Not limited to format. For example, the above-mentioned pulses can be obtained by using a rotating body as a disc having a plurality of teeth around its periphery and providing a proximity switch therein, or by allowing light to pass through the disc through a plurality of windows in the circumferential direction.

The defective product discharge means is located downstream of the ligation/cutting position after filling the dough into the tube, and receives the signal from the joint detection means and/or the signal to start/stop operation of the filling and packaging machine. operated by
For example, a turning mechanism or the like can be used. Here, the defective product discharging means operates to the discharging side with a delay of the time required for the film to reach the position of the defective product discharging means from the position of the seam detecting means in response to the signal from the seam detection means. If the machine is set to the discharge side for a certain set period of time from the start of operation, and is then switched to the non-discharge side (non-defective side),
It is set to return to the discharge side again when the operation is stopped.

When the filling and packaging machine is set to stop filling, ligating, and cutting during the above-mentioned film splicing and startup/stop, the defective product ejection means is usually installed close to the ligating device. The switching of the defective product discharging means may be set to operate when the ligation is stopped or started.

(effect) Next, the operation of the present invention will be explained.

First, at the same time as or prior to the start of operation of the filling and packaging machine, the defective product discharging means is set on the discharging side.

When the filling and packaging machine is started in such a state, the strip-shaped film pulled out from the original film is formed into a tube, then this tube is filled with a paste, and finally two clips are ligated at regular intervals, and It is cut between the two clips to obtain a product, such as a sausage, with both ends ligated. However, filling (and therefore ligating and cutting) is not performed for a certain period of time after startup, and the state of tube formation is adjusted. During this predetermined period of time, that is, until the start of ligation, the defective product discharging means is on the discharge side and discharges the tube as a defective product. When the tube adjustment is completed and the ligation is completed, the film ejection means is switched to the non-defective side in response to the signal.
The product is shipped as a non-defective product.

In this way, products are manufactured one after another, but when the film of one original film is completed, the starting end of the film of the other original film is joined by the original film joining means, and filling and packaging continue without interruption. be done. In some cases, films of the same original film are already spliced in the middle. When the splicing point of the film passes through the splicing detection means,
The means transmits the signal to the defective product removal means.
Then, the defective product discharging means is switched to the discharging side after a delay corresponding to the time required to reach the defective product discharging means position from the joint detecting means position, and the film at the joint portion is discharged. Then, after a certain period of time has elapsed, that is, a time sufficient to avoid the joint, the defective product discharging means returns to the non-defective product side again.

Next, when the filling and packaging machine is stopped, the defective product ejection means is switched to the ejection side by the stop signal,
Subsequent products will be discarded as defective products.

(Example) The embodiments shown in the drawings will be described below.

In the figure, reference numerals 1 and 1' indicate original fabrics around which band-shaped films 2 and 2' are wound, and the film 2 of one of the original fabrics 1 is sent out to the forming plate 5 by a pair of feed rollers 31 and 31. There is. The leading end of the film 2' of the other original fabric 1' is held by a film joining means 4 in preparation for joining at the end of the film 1. Here, a description of the automatic film splicing device will be omitted since it is not directly related to the present invention.

On the original film 1, there is a film original reduction detector 61 that detects when the remaining length of the film reaches a certain value.
is attached. Further, a film end detection sensor 62 such as a phototube switch is disposed between the original web 1 and the first feed roller 31 to detect the end of the film 2 on the original web 1 when the film 2 ends. The original film splicing apparatus of the present invention is comprised of film splicing means 4 and detection means 62 in this embodiment. Further, idling rollers 33, 33, . . . are arranged behind the feed roller 31.
A seam detector 63, such as a phototube switch, for detecting a seam in the middle of the film 2 wound on the original fabric is disposed between two of them at appropriate positions.

The film 2 is rolled into a cylindrical shape by the forming plate 5. Disposed below the forming plate 5 are a cylindrical guide 72 that guides the film 2 rolled into a cylindrical shape from the inside, and a welder 71 that welds the seam of the film from the outside to form the tube 21. ing. Inside the guide 72 is a filling pump 81 disposed at an upper position.
A dough supply pipe 82 connected to is extending.
Below the guide 72 are a pair of feed rollers 91, 91 that feed the tube 21 downward, and further below that are a pair of squeezing rollers 1 that form a constricted squeezing portion of the tube 21.
01, 101 are arranged. Shigoki roller 10
A ligating device 102 is provided below the ligature 1 for ligating the squeezed portion with two clips and cutting the ligature between the two clips. The ligating device 102 is set to repeatedly move back and forth, descending at the descending speed of the tube 21 and returning to the original position upon completion of one ligation. The period of this reciprocating movement therefore corresponds to the ligation speed.

The filling pump 81 and feed roller 91 described above are connected to rotary driving motors 83 and 93, respectively. The ligation device 102 is connected to a motor 103 via a mechanism that converts rotational drive into horizontal reciprocating motion for press ligation. In addition, the motor 93 that drives the feed roller 91 has its rotation speed,
In other words, a film seam movement amount detector 92 converts the feeding amount of the tube 21 into the number of pulses generated at regular intervals and counts the number of pulses, for example, as shown in the figure, a film seam movement amount detector 92 has teeth around the periphery, and a roller 91, that is, a motor 9.
3, which rotates in proportion to the number of rotations of the rollers 91, and a proximity switch close to the disk, and generates a number of pulses proportional to the number of rotations of the roller 91. A container is provided.

The pulse generator does not rely on the proximity switch as described above, but instead uses the roller 91, that is, the motor 93.
It is sufficient if the number of pulses is generated in proportion to the number of rotations.
For example, windows that transmit light are provided at equal intervals on a disk connected to the rotating shaft of the feed roller 91, and a pulse signal proportional to the number of rotations of the feed roller is generated by a sensor that receives the light passing through the windows. It is also possible to do so.

At a position below the ligating device 102, there is a defective product discharging device 200 that receives the products and sorts them into non-defective products and defective products.
is installed. The defective product discharge device 200 is
Shooter 201 for transporting non-defective products and ligation device 1
Belt conveyor 202 that receives products directly below 02
and a turning mechanism 203 that can appropriately switch the flow of products on the belt conveyor 202 to the shooter 201 side. This switching mechanism receives a signal from the ligating device 102 and uses the cylinder 204 to control the non-defective side A when the ligating device 102 starts ligating.
(the two-dot chain line position shown in the figure), and when the ligation is stopped, the ligation device 1 is switched to the defective product ejection side B (the solid line position shown in the figure).
It is designed to operate in synchronization with 02 when ligation is not performed.

Next, the operation of the embodiment of the present invention will be explained.

First, the outline of the product manufacturing process is as follows.

The film 2 from the original film 1 is transferred to the feed rollers 31 and 3
1, it is fed into the forming plate 5 and formed into a cylindrical shape with a seam, and then the seam is welded by a welder 71 to form the tube 21, and a pair of feed rollers 91, 91 are formed. is sent downward. The tube 21 is filled with dough from the filling pump 81 located above.
The tube 21 packed with the dough is strained at a constant setting (pitch speed) by a pair of straining rollers 101, 101 disposed below. The squeezed portion is clipped at two adjacent locations by a ligating device 102 having a press machine that reciprocates horizontally while reciprocating vertically, and cuts the ligature between the two clips to produce one product, such as a sausage, one after another. It is created in

At or before the start of the manufacturing process described above, the switching mechanism 203 is located on the defective product discharge side B. After starting the manufacturing process, the filling pump 81 and the ligating device 102 are stopped, and the angular position of the forming plate 5 and the axial position of the web 1 are controlled so that the tube 21 can be formed in a good condition. Adjust to. Therefore, the tube 21 formed during this adjustment period falls onto the belt conveyor 202 and is then discharged as a defective product.

Next, when the tube is molded in a normal state through the above adjustment, the filling pump 81 and the ligating device 102 are started, and products are manufactured one after another. At this time, the switching mechanism 203 is switched to the non-defective side A, and the products falling from the ligating device 102 onto the belt conveyor 202 are transferred to the switching mechanism 203.
3, it flows down to the shooter 201 and is carried out.

Next, if there is a seam in the middle of the film 2, the seam will be disposed of as a defective product, but if there is a seam in the film 2, there is already a seam in one raw material. There are cases where one raw fabric is finished and the next raw fabric is connected to it. The latter film splicing is done as follows.

When the film 2 of one original web 1 is completely finished, the film end detection sensor 62 detects the end of the film 2, and the film joining means 4 is actuated based on the signal, and the film 2 of the new original web 1' is attached. The starting end of ' is attached to the end of the film 2, and the film splicing is completed.

If there is a film splicing part like the one above,
The joint detector 63 detects this and issues a signal. After receiving the signal and after a certain period of time, the filling pump 8
1, and the ligating device 102 sequentially stops. The above-mentioned fixed time is the time required for the film to reach from the seam detector 63 to the position of the filling pump 81 and to the ligation device 102, but in this embodiment, this is converted into the travel distance of the film. That is, when the film seam movement amount detector 92 counts a certain number of pulses and issues a signal indicating that the seam of the film 21 has reached the front side of the forming plate 5, the motor 83 of the filling pump 81 stops. do. Further, after the film has traveled a certain distance, that is, when the joint of the film approaches the ligating device 102, the motor 103 stops. The command signal in this case is also made by setting the number of pulses of the film seam movement amount detector 92. When the ligating device 102 stops, the switching mechanism 203 is simultaneously switched to the defective product discharge side B, and the tube (film) having the seam falls onto the belt conveyor 202 without being filled with dough. After that, it is discharged as a defective product.

After the film has completely passed through the seam, normal operation is automatically resumed. That is, without stopping the tube feed motor 93, the detector 92 continues to count pulses even after the ligation motor 103 has stopped, and after the film has traveled a certain distance, that is, the joint has completely reached the ligation position. After passing, the motor 83 for the filling pump 81 is operated again to resume filling, and after the film has traveled a certain distance, that is, when the filling start position of the tube 21 approaches the ligation position, the motor 83 for the ligating device 102 is operated again. 103 to resume ligation. Then, in synchronization with the reactivation of this ligation device 102, the switching mechanism 2
03 is returned to the non-defective side A. Then, the subsequent products fall into the shooter 201 as non-defective products.

Finally, when the filling and packaging machine is stopped, the switching mechanism 203 is switched again to the discharge side B at the same time as the stop signal is received, and the products until the machine completely stops are discharged as defective products. .

(3) Effects of the Invention As described above, the present invention can automatically eliminate defective products that occur when starting/stopping the filling and packaging machine and splicing the film, so the work for removing defective products can be completely eliminated. This is no longer necessary, improving work efficiency.

At this time, a film movement amount detection device is installed which generates and counts a pulse signal proportional to the number of rotations of the film feed roller, which is activated by the input of a seam detection signal, and when the pulse signal reaches a predetermined number of pulses. Since the operations of the dough supply device and the ligation device are controlled, the distance the film moves after the seam is detected is uniquely determined by the number of pulses, regardless of the feed speed. Therefore,
Even if the feed speed changes, there is no need to change the set value of the number of pulses, and the operations of the dough supply device and ligation device are controlled when the joint is always at a fixed location. Another advantage is that the operator can freely set the degree of slowdown in film feeding while observing the operating conditions. The number of pulses corresponding to the above-mentioned travel distance can be easily counted by installing a film travel amount detection device in the film feeding device and generating a pulse signal proportional to the number of rotations of the film feeding roller. And now it can be done reliably.

In addition, the series of operations that detect seams and eject defective products are performed without stopping film feeding, increasing production volume and readjusting the tube forming condition as when film feeding was stopped. Since there is no need to do this, there is no need to waste film.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an apparatus according to an embodiment of the present invention. 4... Raw film splicing means (film automatic splicing device), 63... Splice detection means (container), 200
...Method for discharging defective products (device).

Claims (1)

[Claims] 1. After pulling out a film strip from the original film and forming it into a tube using a film forming device, the tube is fed out using a film feeding device while filling the tube with a dough from a dough feeding device. After that, the tubes filled with dough are ligated at regular intervals using a ligature device and separated.In the automatic dough filling and packaging machine, the remaining amount of raw film is detected and the tube is automatically connected to the next film. an original film splicing device; a seam detection means for optically detecting a seam disposed between the raw film splice device and the film forming device; and a seam detection signal transmitted from the seam detection means. Counting of the number of pulses starts when the signal is input, and in order to control the operation of the kneaded material supply device and ligation device at a predetermined number of pulses, a pulse signal proportional to the rotation speed of the film feeding roller is generated and counted. A film feeding device comprising: a film movement amount detecting device provided on the film feeding device; and a defective product ejecting means disposed downstream of the ligating device that operates in synchronization with the ligating device when the ligating device is not ligated. An automatic dough filling and packaging machine that discharges defective products without stopping the process.