JPH057244B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sealing temperature control device for a continuous sealing machine, and more specifically to a sealing temperature control device for a continuous sealing machine that controls the sealing temperature depending on the speed of packaging material. The present invention relates to a temperature control device.

[Prior art] So-called pillow packaging, in which packaging is performed by continuously center-sealing a continuous packaging material, such as wrapping paper or polyethylene film, and wrapping the packaged object while forming it into a cylindrical shape, and end-sealing it. Sealing by heating and pressure has been conventionally used in machines, four-sided or three-sided seal packaging machines, other packaging machines, and bag-making machines that simply form bags by sealing. This is done by using a resin film that can be fused by heating as a continuous packaging material, or a wrapping paper made by laminating these resins, and applying it to a heat and pressure sealer (sealer) called a center sealer, end sealer, etc. According to
It is sealed by heat fusion.

In these sealing machines, the sealing condition depends on various conditions such as the applied pressure, the material and thickness of the packaging material, the temperature of the heated packaging material, as well as the characteristics and errors of the machine that is actually operated. Therefore, precise control by the operator was required to maintain a good sealing condition. Generally, among the above specifications, only the temperature cannot be changed, so the condition of the finished bag, package, etc. is determined by testing with various testing machines such as a tensile testing machine, visual inspection, etc. The operator needed to control the temperature of the sealing machine's heater.

In order to facilitate this operation,
No. 163105 discloses a sealing system for a packaging device that automatically adjusts the heating temperature relative to the speed according to the characteristics of each type of film. However, according to this method, the heating temperature is set according to the film characteristics, but the actual sealing characteristics are related to the unique habits and errors that differ from machine to machine in addition to the sealing characteristics of the film. There were slight differences in the optimum heating temperature depending on the characteristics of the machine actually operated. For this reason, the optimum heating temperature cannot be obtained, or the operator has to control the heating temperature one by one in order to obtain the optimum heating temperature.

In addition, sealing machines that automatically control the feeding speed of packaging materials according to the temperature of a heater, etc., have been proposed so as to keep the temperature of heated packaging materials constant. In machines, the feed speed of the packaged items is linked to the production speed of the previous process line, so this was not a practical solution.

[Problems to be solved by the present invention] Against the background of the prior art, the problems to be solved by the present invention are as follows. In other words, (1) The operator can adjust the heating temperature to achieve a good sealing condition depending on the various materials, shapes, and thicknesses of the packaging materials, as well as the characteristics of the machine that will actually be operated. (2) However, it is possible to eliminate the trouble of making adjustments. (3) Due to line manufacturing capacity and other requirements, packaging speed and Alternatively, if the speed of bag making changes, the speed of the packaging material passing through the heating means also changes, so if the amount of heat from the heating means is constant, the temperature of the heated packaging material will fluctuate. Moreover, if the packaging material is fed at a different speed, the optimal sealing temperature often differs. Therefore, even if the packaging material is the same, the heating temperature must be adjusted every time the packaging or bag making speed changes, resulting in problems similar to (1) and (2) above. 4) Even if packaging materials of the same material and thickness and the same machine are used, and the packaging speed is the same, if the operator inspects the finished product and adjusts the heating temperature, the heat sealing will fail. It is difficult to maintain a constant quality, and the sealing condition varies depending on the operator's skill level and physical condition.

[Object of the Invention] The present invention was made in view of the above points, and its purpose is to improve the sealing speed in a continuous sealing machine, the type of packaging material (thickness, material, etc.), or the machine actually operated. It is an object of the present invention to provide a sealing temperature control device for a continuous sealing machine that facilitates the adjustment of the heating of the sealing portion of the packaging material required for each case and realizes good sealing.

[Structure of the Invention] Two inventions have been made to achieve the above object, and the structure of the first invention is as shown in FIG.
A sealing temperature control device for a continuous sealing machine, comprising: a manual temperature adjustment means M3 that manually adjusts the heating temperature of the packaging material M1 by the heating means M2, the packaging material passing through the heating means M2. speed detecting means M4 for detecting the speed of M1; storing the heating temperature manually adjusted for the detected predetermined speed of the packaging material M1; and adjusting the speed of the packaging material M1 from the stored heating temperature. The gist of the present invention is a sealing temperature control device for a continuous sealing machine, comprising: a control means M5 that determines a corresponding optimum sealing temperature by interpolation and controls the heating means M2.

On the other hand, a second invention that achieves the same object has a heating means M for heating the sealed portion of the packaging material M11, as shown in FIG.
12, and the packaging material M1 of the heating means M12 is manually heated.
Manual temperature adjustment means M1 for adjusting the heating temperature to 1
3, a sealing temperature control device for a continuous sealing machine comprising: a packaging material setting means M14 for setting the type of the packaging material M11; and a packaging material M11 passing through the heating means M12.
a speed detecting means M15 for detecting the speed of the packaging material M11 set by the packaging material setting means M14; A control means M16 for storing a heating temperature, determining by interpolation an optimum sealing temperature according to the type and speed of the packaging material M11 from the stored heating temperature, and controlling the heating means M12. The gist of this paper is a sealing temperature control device for a continuous sealing machine.

[Operation of the Invention] Therefore, according to the configuration of the first invention, in the sealing temperature control device of a continuous sealing machine, the sealing temperature is adjusted in advance to the speed of the packaging material passing through the heating means in the actually operated packaging machine. The heating temperature of the heating means, which has been manually adjusted to achieve a good sealing condition, is memorized, and from this memorized heating temperature, the optimum sealing temperature according to the actual speed of the packaging material is determined by interpolation, and then the heating is performed. control means, so even if the speed of the packaging material changes,
The packaging material can always be heated to a temperature suitable for sealing.

On the other hand, according to the configuration of the second invention, in the sealing temperature control device of the continuous sealing machine, the type of packaging material is set in advance, and the effect of the first invention is adjusted for each packaging material used. As explained above, the relationship between the speed of the packaging material and the heating temperature of the heating means is memorized in the packaging machine that is actually operated, and the heating means is controlled according to the speed of the packaging material. For certain packaging materials, simply by specifying the type of packaging material, the packaging material can always be heated to a suitable temperature for sealing.

Here, in the first and second inventions, the heating means refers to a means for heating the sealed part of the continuous packaging material, such as an electric heater that is pressed against the packaging material or sandwiching the packaging material between rollers or the like facing each other. is common. In a pillow packaging machine, heating means include a cast-in heater provided in a center sealer, a cartridge heater embedded in an end sealer, and the like. As the heater, a nichrome wire, a ceramic heater, etc. are used, and most produce a heat amount of several tens of watts to several hundred watts, and it is not uncommon for the heating temperature of the packaging material to range from several tens of degrees Celsius to several hundred degrees Celsius. These heaters may be selected depending on the type of sealing part used, for example, a center seal, an end seal, or a four-sided seal. Moreover, it may be used in combination with a preheater if necessary.

As the packaging material, anything that can be heat-sealed can be used, such as a resin film that can be heat-fused, such as polyethylene, or a wrapping paper such as Japanese paper laminated with the above-mentioned resin.

As the speed detection means, the feeding speed of the packaging material may be directly detected by the detection interval of the registration mark attached to the packaging material, the number of detections per hour, etc., or a rotary seal for the center seal part may be used. In the case of a bonding machine, the number of seals (or cuts) per hour and the sealing (or cutting) interval, or in the case of a sealing/cutting machine for end seals, based on the number of rotations and the circumference, or the number of rotations. The feeding speed of the packaging material may be calculated from the cut pitch and the like.

As the packaging material setting means in the second invention,
A digital switch may be used to assign a number to each type of packaging material and specify the number, or a computer or the like may be combined with a memory and configured to specify from a keyboard. Furthermore, it is also possible to specify the packaging material by using a magnetic card corresponding to the packaging material, or by using a pinball or voice input.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 3 is a schematic diagram of the horizontal pillow packaging machine described as an embodiment of the first and second inventions, and FIG. 4 is a block diagram showing the electrical system thereof.

In FIG. 3, 1 is a supply conveyor that supplies the objects to be packaged 1a and 1b, 2 is a feed roller that supplies a band-shaped packaging film (polyethylene) 4 for packaging to a former 3, and 5 is a feeder that pulls out the film from the former 3. A roller 7 is a center sealing device (hereinafter referred to as a center sealer) for sealing the overlapping part of the packaging film 4 formed into a cylindrical shape by the former 3, and 8 is a center sealing device (hereinafter referred to as a center sealer) for sealing (end sealing) and cutting the front and rear of the packaging film 4. 9 represents an end sealing device (hereinafter referred to as an end sealer) and a discharge conveyor. The center sealer 7 is configured such that a front roller 7a and a rear roller 7b, which rotate oppositely, sandwich the overlapping portion of the packaging film 4 and perform sealing by applying pressure and heat. , heater CHrt is installed on roller 7a.
However, a heater CHlt is incorporated in the roller 7b. In addition, the end sealer 8 has an upper seal cutter 8a and a lower seal cutter 8b, which move vertically in opposition to each other, to wrap the packaged object and sandwich the packaged object between the center-sealed packaging films 4.
Cartridge heaters (upper heater EHup, lower heater
It is configured to heat and seal using the amount of heat of the material (EHlw). In addition, the upper and lower seal cutters 8a, 8b
is also equipped with a cutter blade, which cuts the seal at the center of the seal after sealing.

Next, FIG. 4 will be explained. In the figure 1
0 is a control circuit that performs various controls of the horizontal pillow packaging machine, and corresponds to the control means in terms of the configuration of the present invention. The control circuit 10 includes a well-known central processing unit (CPU) 12 that performs data input/output, calculations, etc.
It is configured to perform control and processing described below. 14 is a read-only memory (ROM) in which processing programs and various constants are stored;
16 is a temporary storage memory (RAM) in which data can be freely read and written, and 17 is a memory (RAM) that is backed up by a battery (not shown) and retains the written data even after the packaging machine is powered off. Backup RAM), 18 is CPU12
According to data from external display device (CRT)
Controls 19 and displays control information, etc.
CRT controller, 20 is external keyboard 2
2, a keyboard input circuit for inputting data; 24, a motor drive circuit for driving the main motor M of the horizontal pillow packaging machine and various control motors M1 to Mi; 26, a pulse for detecting the control position of the motor; A pulse input circuit inputs signals from the generator PHS ₁ or PHSi and a signal from the operation switch 27, and 28 is a heater CHrt, CHlt, provided in the center sealer 7 and the end sealer 8.
Heater control circuit that controls EHup and EHlw, 29
30 is an analog input circuit that inputs signals from the temperature sensing elements Seu, Sel, Scr, and Scl that detect the heating temperature by each of the heaters; 30 is the CPU 12 and ROM 1;
Each represents a bus that connects each element/circuit such as 4 to each other. Here motor M ₁ or Mi,
The individual controls of the pulse generators PHS ₁ to PHSi will not be explained as they are no different from the well-known controls for horizontal pillow packaging machines.
In addition to driving the main motor M of the entire packaging machine, control of the control motor etc. that sets and changes the rotational speed of the end sealer 8 is based on signals from a pulse generator that detects the rotational position of these motors. It is being done.

The four heaters are as shown in the circuit diagram in Figure 5.
It is connected to the heater control circuit 28, and the output transistors Tr ₁ , Tr ₂ , in the heater control circuit 28
By turning Tr ₃ and Tr ₄ on and off by the CPU 12, the solid state relay SSR ₁ ,
The configuration is such that the power supplied to the heater via each of SSR ₂ , SSR ₃ , and SSR ₄ is controlled.
The heater can be controlled from 0 to 100% by changing the duty, the percentage of time the heater is energized.
It is held between.

Next, an embodiment of the first invention in a horizontal pillow packaging machine having the above-mentioned configuration will be described with reference to the flowchart shown in FIG.

This control routine shows an example of a control routine for a horizontal pillow packaging machine, focusing on temperature control. When the power is turned on, initialization processing such as clearing the internal registers of the CPU 12 is first performed at step 100. The following step 110 is a step for selecting the next control mode from the menu, and immediately after starting up the packaging machine, the operator must select a mode (setting mode) for setting the rotation speed, cut pitch, etc. . Mode selection is performed by designating the control mode number displayed on the CRT 19 using the keyboard 22. In this embodiment, another control mode is a mode (continuation mode) in which the operation is continued under the same conditions after the operation has been performed once.

When the configuration mode is selected in step 110,
The process proceeds to step 120, in which the cut pitch P of the packaged object, the number of packages per minute, ie, the rotation speed N of the end sealer 8, etc. are set via the keyboard input circuit 20 by operating the keyboard 22. It is done. In the following step 130, the feed speed V of the packaging film 4 is calculated from the cut pitch P and the rotation speed N set in step 120 using the following equation (1).
Processing to calculate is performed.

V=P×N...(1) After the processing in step 130 or in step 110
When the continuation mode is selected in the menu of
Processing proceeds to step 140, where it is determined whether "SET"("S" key in keyboard 22 in FIG. 4) has been pressed. If the "SET" key has been pressed, the process proceeds to step 150 to set the target value T of the heating temperature of each heater CHrt, CHlt of the center sealer 7 and the upper heater EHup and lower heater EHlw of the end sealer 8. All of these settings are made by inputting numerical values from the keyboard 22 and confirming them on the CRT 19.

On the other hand, if the "SET" key is not pressed at step 140, the process proceeds to step 160,
A process is performed to calculate the heating temperature T of each of the heaters to be controlled from the feed rate V determined in step 130 using a map. The maps used to calculate the heating temperature T here are those shown in Figure 7 A, B, C, and D, and the correlation between the feed speed V and the heating temperature T is gradually learned through the process described later. It is something we will continue to do. FIG. 7A shows the initial state of the packaging machine, and only one correspondence between the feed speed V and the heating temperature T is given. Therefore, in this case, the predetermined temperature T ₁ is calculated regardless of the feed rate.

After processing step 150 or step 160,
Processing proceeds to step 170 and begins controlling heater power. The power for the heater is supplied by inputting signals from temperature sensing elements Seu, Sel, Scr, and Scl (e.g., thermocouples and thermistors) that are built into the vicinity of the heater and that contact the film 4 and detect the temperature of the film 4 to the analog input port 29. This is done by reading the current heating temperature through the heater control circuit 28 and changing the turn-on rate (duty) of the transistor corresponding to the heater in the heater control circuit 28 so that the current heating temperature becomes the set target temperature T. In the following step 180,
It is determined whether the current heater temperature is within a predetermined tolerance range, here ±10° C., with respect to the target temperature T. If the heating temperature by the heater is not within the allowable range of the target temperature, the process will proceed to step
170, the packaging machine cannot be operated until the heating temperature of the heater falls within ±10°C of the target temperature. Therefore, sealing will not be performed while the heating temperature of the heater is insufficient or in an overheated state. When the temperatures of all controlled heaters are within the permissible range, the process proceeds from step 180 to step 190. Incidentally, the processes of steps 150 to 180 are performed for all of the two heaters CHrt and CHlt of the center sealer 7 and the upper heater EHup and lower heater EHlw of the end sealer 8.

Step 190 is a step for determining whether or not to operate the packaging machine. That is, the state of the start switch 27 provided on the main body of the packaging machine is determined, and if it has just been turned on, the process moves to step 200 to start the main motor M and start operation. on the other hand,
If the start switch 27 of the motor that was already in operation is turned off, the process moves to step 210, and the main motor M is stopped. If the start switch 27 has not been turned on yet, or if it has been turned on and the main motor M has been started, no particular processing is performed, the control is continued as it is, and the process moves to step 220. .

At step 220, press "GO" on the keyboard 22.
Determine whether the switch is on or not,
If the “GO” switch is on, step the process.
230, and in step 230, the current feed rate Vn
A process is performed in which the heating temperature Tn of the heater corresponding to that is stored as a map in the backup RAM 17. After the processing in step 230 is completed, or when the determination in step 220 is "NO", that is, the "GO" switch is not turned on, the processing continues at step 220.
Return to 140 and repeat the above process.

On the other hand, after stopping the main motor M at step 210 to stop the operation, the process returns to the menu at step 110, and the above-mentioned process is repeated from the operation mode selection.

When this control routine configured as described above is repeatedly executed, the packaging machine that is actually in operation will perform packaging at various feed speeds, check the sealing state of the product, and ensure optimal sealing. Since the heating temperature is set, as this is registered, the correlation between the feed rate and the heating temperature will gradually be precisely determined over a wide range. Figure 7A shows the correlation when only one point is determined, and Figure 7B shows the correlation between two points.
Figure 7C shows the correlation after the heating temperature T ₂ is set at the feed rate V ₂ for the first point, and Figure 7D shows the correlation when 4 points are determined, and Figure 7D shows the correlation when 6 points are determined. It shows the correlation when The heating temperature at a feed rate other than the registered feed rate during actual operation can be determined by interpolation using the maps of FIG. 7 as a map. Therefore, when the packaging machine is actually operated, the sealing temperature control device of the continuous sealing machine of this embodiment is operated at various feed speeds, and the optimum heating temperature at that time is registered. The heating temperature of the heater, which serves as a heating means for coating, can be controlled more precisely.

Also, once these registrations have been made,
In subsequent operations, by inputting and setting the feed rate (in this case, the cut pitch and the number of packages per minute), the heater temperature can always be controlled to a suitable heating temperature without the need for troublesome heating temperature settings. can. As a result, even if the operator changes, sealing can always be performed under the same conditions, and the quality of the sealing surface can also be maintained.

Furthermore, since the correlation between feed speed and heating temperature is set in the packaging machine that is actually operated, not only the film characteristics but also characteristics such as errors that differ for each machine are taken into account, resulting in more accurate control. becomes possible.

Next, an embodiment of the second invention will be described. Second
The embodiment of the invention has the same device configuration as the first embodiment of the invention described above with reference to FIGS. 3 and 4, and the control shown in the flowchart of FIG. 8 is performed. This embodiment of the second invention is different from the embodiment of the first invention in that steps 110 and 120 in the flowchart of FIG.
324, has been changed to step 326. The other steps, that is, steps 300, 330 to 430 of the second embodiment of the invention correspond to step 100 and steps 130 to 230 of the first embodiment of the invention, respectively, and their processing is the same, so a description thereof will not be given. Omitted.

Second Invention In this embodiment, the initialization step 300
After completing the process, the process proceeds to step 310 to select a menu. This determines whether the control to be performed now is a mode for operation with new packaging materials and packaging shapes (setting mode), or a mode for operation with already registered packaging materials and packages (call mode). , or a mode in which the previously performed operation is continued (continuation mode). When the setting mode is selected in step 310, the process proceeds to step 315, where a two-digit registration number is specified from the keyboard 22, and a registration number unique to the packaging shape and packaging material to be packaged is set. . In the following step 320,
Using the keyboard 22, settings such as the rotation speed and cut pitch of the end sealer 8 that performs wrapping and sealing are made.

On the other hand, when the call mode is selected in the menu at step 310, the process proceeds to step 324, where a registered number is designated from the keyboard 22. In the following step 326, a map showing the correlation between the registered rotation speed, cut pitch, feed speed, and heating temperature of the heater corresponding to the number specified in step 324 is read from the backup RAM 17, and the set value is displayed on the CRT 19. do.
After this process, the process moves to step 320 and
In step 320, each setting value read out in step 326 is changed by inputting a numerical value from the keyboard 22, if necessary.

If the continuation mode is selected in the menu at step 310, the process moves to step 340.

The processing from step 330 onwards is the same as in the first embodiment of the invention.

In this embodiment of the second invention configured as described above, the correlation between the packaging film feeding speed and the heating temperature of the heater can be registered as a map for each packaging material and packaging shape. In addition to the above effects, the following effects are also achieved. In other words, there is no need to adjust the heating temperature of the heater each time according to a wide variety of packaging materials and packaging shapes, which reduces cumbersome adjustments for the operator, significantly reduces setup man-hours, and speeds up production. can improve sex.
Moreover, even if the packaging material is changed, a good sealing state can be obtained.

In addition, in each embodiment of the first invention and the second invention,
The temperature of each heater is adjusted using temperature sensing elements Seu, Sel, Scr,
Although feedback control is performed using Scl, feedback is not necessarily necessary, and control may be performed simply by changing the supplied power. If feedback control is performed, the temperature can be adjusted more precisely, but only within the accuracy of the temperature sensing element.Also, without feedback control, the number of parts will be reduced and the configuration will be simpler. Therefore, it is only necessary to decide which control is to be performed in accordance with the embodiment of the invention described above.

Further, in each of the above embodiments, a roller type heater is used for the center seal and a bar type heater is used for the end seal as heating means, but the heating means is not limited to this, and hot air type heaters, fused seal type heaters, etc. Any heater can be used.

Further, in order to prevent the film from being deformed by heating and to ensure sealing of the film, upper and lower limits can be set for the heating temperature with respect to changes in the heating temperature depending on the feed speed.

In addition, in this example, the packaging material M1/M
The packaging film 4 corresponds to 11, and the heating means M
2/M12 corresponds to the center sealer 7 and end sealer 8, the manual temperature adjustment means M3/M13 corresponds to the keyboard 22 and the control circuit 10 (processing steps 150/350), and the speed detection means M
4/M15 corresponds to the control circuit 10 (processing steps 130/330), and the control circuit M5/M16
The control circuit 10 (processing includes step 160,
170, 230/360, 370, 430), and the packaging material setting means M14 includes a keyboard 22 and a control circuit 1.
0 (processing steps 315 and 324) corresponds to this.

Although the embodiments of the first invention and the second invention have been described above, these inventions are not limited to the above-mentioned embodiments, and may be modified in various ways without departing from the gist of each invention. Of course, it can be implemented.

[Effects of the Invention] As described in detail above, according to the sealing temperature control device for a continuous sealing machine of the first invention, the packaging material in one packaging material/packaging shape can be applied to the machine that is actually operated. The correlation between the feeding speed of the packaging material and the heating temperature of the packaging material is memorized, and the heating temperature is suitably controlled according to the feeding speed of the packaging material through interpolation. It has an excellent effect of being able to perform sealing and maintain a good sealing state.

Further, according to the sealing temperature control device for a continuous sealing machine of the second invention, in addition to the effects of the first invention, it is possible to adjust the feeding speed and heating temperature of each packaging material for a plurality of packaging shapes and packaging materials. By memorizing the correlation between It has a great effect.

[Brief explanation of the drawing]

Figure 1 is a basic configuration diagram of the first invention, Figure 2 is a basic configuration diagram of the second invention, and Figure 3 is a basic configuration diagram of the first invention and the second invention.
A schematic configuration diagram of a horizontal pillow packaging machine explained as an embodiment of the invention, FIG. 4 is a block diagram showing the electrical system, FIG. 5 is a circuit diagram showing the connection between the heater control circuit and each heater, and FIG. Flowchart showing the control routine of the embodiment of the first invention, FIG. 7A,
B, C, and D are graphs each showing the learning of the correlation between the feed rate and the heating temperature, and FIG. 8 is a flowchart showing the control routine of the embodiment of the second invention. 4... Packaging film, 7... Centacilla, 8
... End sealer, 10 ... Control circuit, 12 ...
CPU, 28... Heater control circuit, 17... Backup RAM, 22... Keyboard, CHrt,
CHlt, EHup, EHlw...Heater, Seu, Sel,
Scr, Scl...temperature sensing element.

Claims (1)

[Scope of Claims] 1. A sealing machine for a continuous sealing machine, comprising: a heating means for heating a sealed portion of a packaging material; and a manual temperature adjustment means for manually adjusting the temperature at which the heating means heats the packaging material. The deposition temperature control device includes a speed detection means for detecting the speed of the packaging material passing through the heating means, and a speed detection means for storing the heating temperature manually adjusted for the detected predetermined speed of the packaging material, and A sealing temperature control device for a continuous sealing machine, comprising: a control means for controlling the heating means by determining an optimum sealing temperature according to the speed of the packaging material from the stored heating temperature by interpolation. . 2 The heating means is a roller type heater, a bar type heater,
The sealing temperature control device for a continuous sealing machine according to claim 1, wherein the heater is either a hot air type heater or a melt-cut seal type heater. 3. The sealing temperature control device for a continuous sealing machine according to claim 1 or 2, wherein the sealing portion heated by the heating means is an end seal portion. 4. A sealing temperature control device for a continuous sealing machine according to claim 1, 2, or 3, wherein the sealing portion heated by the heating means is a center seal portion. 5. Continuous sealing according to any one of claims 1 to 3, wherein the speed detection means detects the speed of the packaging material from the sealing interval of the end seals and the number of sealings per time. Machine sealing temperature control device. 6. According to any one of claims 1 to 4, wherein the speed detection means detects the speed of the packaging material from the interval at which register marks attached to the packaging material are detected and the number of detections per time. A sealing temperature control device for the continuous sealing machine described above. 7. A sealing temperature control device for a continuous sealing machine according to any one of claims 1 to 6, wherein the control means sets upper and lower limits to the heating temperature determined from the speed of the packaging material. 8. A sealing temperature control device for a continuous sealing machine, comprising a heating means for heating a sealed portion of a packaging material, and a manual temperature adjustment means for manually adjusting the heating temperature of the heating means to the packaging material, packaging material setting means for setting the type of the packaging material; speed detection means for detecting the speed of the packaging material passing through the heating means; Storing the manually adjusted heating temperature for the detected predetermined speed of the packaging material, and determining the optimal sealing temperature according to the type and speed of the packaging material from the stored heating temperature by interpolation, A sealing temperature control device for a continuous sealing machine, comprising: a control means for controlling the heating means. 9 The heating means is a roller type heater, a bar type heater,
9. The sealing temperature control device for a continuous sealing machine according to claim 8, wherein the heater is either a hot air type heater or a fusing seal type heater. 10 Claim 8 or 9, wherein the sealed portion heated by the heating means is an end seal portion
A sealing temperature control device for a continuous sealing machine as described in 1. 11. The sealing temperature control device for a continuous sealing machine according to claim 8, 9 or 10, wherein the sealing portion heated by the heating means is a center seal portion. 12. Continuous sealing according to any one of claims 8 to 10, wherein the speed detection means detects the speed of the packaging material from the sealing interval of the end seals and the number of seals per time. Machine sealing temperature control device. 13. Claim 8, wherein the speed detection means detects the speed of the packaging material from the interval at which register marks attached to the packaging material are detected and the number of detections per time.
A sealing temperature control device for a continuous sealing machine according to any one of Items 1 to 11. 14. A sealing temperature control device for a continuous sealing machine according to any one of claims 8 to 13, wherein the control means sets upper and lower limits to the heating temperature determined from the speed of the packaging material.