JPH0255347B2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention (Field of Industrial Application) This invention transports a synthetic resin bag material belt intermittently using an intermittent transport conveyor, and processes the bag material belt each time the conveyor stops. , bags, bag-like items (book covers,
This relates to a device for making diaper covers (including diaper covers), etc., and in particular, when the two strips of bag material are hung and transported by a common pair of gripping type conveyor, the information printed on each strip of bag material is used. This invention relates to a bag material belt transfer control device for ensuring that patterns, characters, trademarks, etc. are positioned at desired positions on the bag after processing.

(Prior Art) Conventionally, in this type of device, when two strips of bag material are sandwiched in parallel in a slippable manner by a common pair of pinching conveyors (including transfer rollers) that are driven intermittently, the bag material strips are conveyed intermittently. The left and right bag material strips have slightly different sliding amounts with respect to the conveyor, and even if the same printing machine prints letters, patterns, etc. on the bag material strips made of the same material at a predetermined pitch, these bags Partial elongation of the material band,
Due to shrinkage, each pitch is not exactly the same, and if two such strips of bag material are transported intermittently by a common pair of clamping conveyor, one of the bag material strips will inevitably be transferred first, and the intermittent transfer will be repeated. home,
The difference accumulates, and if processing is performed to match the position of the printed pattern or letters on one bag material band, the printed pattern or letters on the other bag material band may be separated in the middle, or the processing may be defective or impossible. There is a risk of it becoming.

Conventionally, as a means of controlling such transfer dimensions, the size of the bag material strip transported once by the conveyor was set to be slightly larger than the pitch of the register mark (including a part of the pattern or text) displayed on the bag material strip. The mark is detected by each mark detection device, and the conveyor is stopped in response to this signal to shorten the conveyance dimension of the two bag material strips, and the bag material strips that preceded are During the next transfer period, a braking plate is brought into contact only with that bag material strip to apply a transfer load to that packaging material strip, causing a slippage between it and the conveyor, thereby moving the preceding bag material strip to the proper position. We are trying to shorten the length of transport.

(Problem to be Solved by the Invention) However, as mentioned above, the pitch of the register marks on the two bag material strips is generally shorter on one side and longer on the other, and in a certain part of the bag material strip, When there is a tendency of The brake plates are normally energized by a solenoid, but if only one of them is continuously energized, it may heat up and burn out.

When the difference in pitch between the register marks of the two bag material strips is large, set the transfer dimension of the conveyor so that a transfer dimension that is longer than the pitch of the longer bag material strip is sent at each intermittent transfer, and Braking must be applied to match this to the shorter pitch, and with conventional methods and equipment, it is necessary to apply extremely strong braking, making delicate adjustments difficult, and resulting in bags with irregular dimensions as a whole. It will be packed.

Therefore, in this invention, when one of the two bag material strips tends to lead as described above, a transport load different from that of the other bag material band is continuously applied to that packaging material band in advance or during operation. This is so that the strength of the transfer load can be adjusted depending on the magnitude of the tendency.

B. Structure of the Invention (Means for Explaining the Problem) In order to achieve the above-mentioned object, the present invention has a common traction conveyor of a clamping type that grips two strips of bag material in parallel in a slippable manner and transports them intermittently. , a light-load device is provided on the upstream side of the bag material strips, which contacts the bag material strips and applies a transfer load to them, and the bag material strip transfer path between the traction conveyor and the light-load device applies a slight tension to these bag material strips. A common bar-shaped friction brake body is provided in this tension transfer zone, which contacts the two strips of bag material, and the axis of this friction brake body is It is provided in the transverse direction of the belt, and its position can be manually fixed in a direction perpendicular to the surface of the two bag material belts, and one of the two bag material belts is attached to the friction belt. A transfer path is formed in contact with the upper side of the brake body, and the other bag material band is formed with a transfer path in contact with the lower side of the friction brake body, and the friction brake body is a non-rotating and relatively diameter conveying path. It is a large first round bar, and immediately on the loading/unloading side, a bag material strip position regulating guide roller with an axis parallel to the axis of this round bar is provided on the machine frame, and the round bar and its loading/unloading side are installed on the machine frame. A second round bar is provided in parallel with the first round bar to cross the position of the two bag material strips with the position of the first round bar. This is a bag material band transfer dimension control device in a double-thread bag making machine, which is characterized by the following.

In order to achieve the above-mentioned object, the present invention has a common traction conveyor of a clamping type that grips and conveys two strips of bag material strips in parallel in a slippable manner, and on the upstream side of the common traction conveyor, each strip is in contact with the bag material strips. A light load device that applies a transfer load to these is provided, and a bag material strip transfer path between the traction conveyor and the light load device is a tension transfer section in which a slight tension is applied to these bag material strips, and this tension transfer section A common rod-shaped friction braking body is provided inside the bag material strips, and the axis of this friction braking body is provided in the transverse direction of each of the bag material strips, and The bag material belt is provided at a position perpendicular to the belt surface so that it can be manually fixed, and one of the two bag material belts has a transfer path in contact with the upper side of the friction braking body. , the other bag material strip has a transfer path in contact with the lower side of the friction braking body, and the friction braking body moves three non-rotating round rods with a relatively large diameter to the two bag material strips. These three round bars are arranged in parallel with a slight gap from the carry-in side to the carry-out side, and each round bar is parallel to the surface of the bag material strip and perpendicular to the transport direction. Immediately on the loading/unloading side of the machine frame, a bag material band position regulating guide roller with an axis parallel to the axis of this round bar is installed on the machine frame. The bars are connected by mechanical coupling means,
The two round bars at both ends are provided so as to be movable and fixed in the direction perpendicular to the surface of the bag material band relative to the middle round bar. This is a bag material belt transfer size control device in a bag machine.

(Operation of the invention) In the first device invention, the bag material strips wound separately into rolls are each supported by a web support device, and the continuous bag material strips are connected to a guide roller serving as a light transfer load device and a cloth support device. pass between.

Next, the first,
Taking an example in which the second round rods are installed sequentially from the upstream side, the bag material strip on one side is passed sequentially through contact with the upper side of the first round rod and the lower side of the second round rod. Conversely, the material strip is passed from below the first round bar to above the second round bar, passed through the position regulating rollers on the downstream side, and held by the conveyor.

In other words, in the first and second round bar parts, when viewed from the side, the two strips of bag material are tied together,
The first and second round bars are engaged in a crossed state.

In this way, if either of the two bag material bands tends to lead, for example, if the bag material band that is in contact with the upper side of the first round bar is in front of the other bag material bands, 1 round bar some (for example 2 to 5
mm) and stop the first round bar at that position.

When the first round bar is displaced in this way, the contact area of the bag material strip contacting the upper side of the first round bar with the first and second round bars increases, and the bag material strip contacting the lower side of the round bar increases. The contact area with the first round bar decreases, and the bag material band above the first round bar receives a larger transfer load than the bag material band below the first round bar. Slippage occurs between the web of material and the conveyor, reducing the transport dimension of the web of bag material.

If the bag material band on the upper side of the first round bar still tends to precede other bag material bands, then
Raise the round bar. On the other hand, when the bag material band below the first round bar tends to be ahead of the other bag material bands, the first round bar is lowered.

By doing this, the contact resistance between the first round bar and the bag material strip in contact with this lower side increases, and the contact resistance between the other bag material strips and the first round bar decreases, which is the opposite effect to the previous one. to do.

Next, in order to transfer two strips of bag material using the device of the second invention, the steps from the original fabric support device to the second round bar are exactly the same as those of the first invention. The only difference is that the two strips of bag material are passed through, and then, at the third round bar, the two strips of bag material are again changed in position and then passed through the guide roller.

In this way, the conveyor 11 is operated in the same manner as in the first invention, and if any of the bag material bands tends to precede the other bag material bands, the first round bar and the third round bar are Both are moved in the same direction relative to the middle second round bar and stopped at that position.

In this way, the contact area between the bag material strip and the first to third round bars that are in contact with the moving direction side of the first and third round bars increases, and the transfer load transferred by the conveyor increases accordingly. This increases the amount of slippage between the conveyor and the conveyor, reducing the transfer dimension.

In addition, the contact area between the other bag material strip and the first to third round bars is reduced, the transfer load is reduced, and the amount of slippage between the bag material strip and the conveyor is reduced.
The transport size of the bag material strip increases.

(Example) First, an example of a general bag making machine to which the apparatus of the present invention is installed will be described.

10 is a bag making machine, and 11 is a pair of upper and lower clamping type conveyors, which clamps the bag material strips A and B in parallel (see Figure 2) and transfers them intermittently, and during this stop period, the above two strips are conveyed. Lowering means (welding, welding, cutting, drilling, foil stamping, cutting, etc.) on the bag material bands A and B
13.

On the carry-in side of the conveyor 11 mentioned above, a transfer load such as friction plates 16a and 16 is applied to the bag material bands A and B.
When the bag material strips A, B and the conveyor 11 are brought into contact with each other, the bag material strips A and B are conveyed with such a clamping pressure that a slip occurs between the belts and the conveyor 11.

Each bag material strip A processed by the bag making machine,
Register marks 14a, 14b are displayed at predetermined intervals on B, respectively, and the register marks 14a, 14b are displayed on the bag making machine 10.
Mark detection sensors 15a and 15b that detect 4b
are provided corresponding to the bag material bands A and B, respectively, and the conveyor 11 is immediately stopped by an input signal from one or both of these mark detection sensors 15a and 15b. ing.

In addition, in the illustrated example, during the next transfer period, the bag material band A or B on the preceding side is
The friction plates 16a or 16b are brought into contact to apply a transfer load to the bag material strip, causing slippage between it and the conveyor 11, thereby shortening the length of the bag material being transferred.

In the other figures, reference numerals 40a and 40b indicate web support devices that support the bag material strips A and B wound into rollers, and 41 indicates a pair of nipping type feed-out rollers.

Reference numeral 42 denotes a guide roller supported on the machine frame 18 immediately on the carry-in side of the device C for controlling the transfer dimension, which is provided on the downstream side of this feed-out roller. A hanging cloth 43 fixed to the member is hung from the carry-in side to the carry-out side, and an extremely slight transfer load is applied to the bag material bands A and B. In other words, the guide roller 4
2 and the hanging cloth 43 form a light transfer load device which applies a slight transfer load to the bag material strips A, B.

In this invention, as mentioned above, a tension section D is formed between the conveyor 11 and the above-mentioned light transfer load device, where the two strips of bag material bands A and B transferred by the conveyor 11 are slightly tensed. In this transfer section D, there is provided a device C for controlling the transfer dimensions of these bag material strips A and B as shown below.

As an embodiment of the first invention, the device C for controlling the transfer size includes the two bag material strips A,
A non-rotating round bar 17 with a relatively large diameter is provided as a common friction braking body that contacts B, and the diameter of this first round bar is preferably about 8 to 15 cm. As shown in the figure, the axis of this round bar 17 is parallel to the surfaces of the two bag material bands A and B, and is provided in a direction perpendicular to the direction in which these are transported.
8, it is provided so as to be movable up and down. This first
The round bar 17 can be moved in increments of about 2 to 5 mm by mechanical means, such as feed screw rods 27, 28, 27a, levers, etc., and can be fixed in that position. (See Figure 4).

At the loading/unloading position of the first round bar 17, there are guide rollers 19, 20 for regulating the positions of the bag material bands A, B.
are provided respectively, and the figures 1, 3 and 1
As shown in FIG. 16, the rollers may be a pair of rollers that are vertically close to each other, or as shown in FIG. 16, each roller may be a single roller.

Further, in the device C for controlling the transfer dimension of the first invention, a first round rod 17 is provided between the first round rod 17 and one of the guide rollers 19 and 20 provided at the loading/unloading position. A second round bar is provided at a slight distance (approximately the radius of the first round bar) from the second round bar 2.
1. It is provided parallel to the first round bar.

Example 1 As an example of the embodiment described in claim 2 of the first invention, as shown in FIG.
The second round bar 21 is provided on the delivery side of the first round bar 17, has the same diameter as the first round bar 17, or is slightly thicker, and is fixed to the machine frame 18 so as not to rotate.

Example 2 As an example of the embodiment described in claim 3 of the first invention, as shown in FIGS. 5 to 9, a second round bar is placed at the same position as in Example 1. 21 is provided, and this second round bar 21 is moved up and down by the same dimension in the opposite direction in synchronization with the first round bar 17 by an interlocking means 22 (including 22a, 22b, 22c and 22d). It is connected.

As an embodiment of the interlocking means 22, as shown in FIG. 6, the first round bar 17 and the second round bar 21 are attached to both ends of a lever 22a whose starting point 23 is supported by the machine frame 18. When the first round bar 17 rises by tilting the lever 22a to the right or left, the second round bar 21 descends, and the amount of displacement is adjusted by the magnitude of the inclination angle of the lever 22a. can.

Further, as another embodiment of the interlocking means 22, as shown in FIG. direction feed screw rods 27, 28
are screwed together, and these different round bars 17, 21
The feed screw rods between the rods are connected to each other by interlocking means, for example, an endless belt 22b, and when one feed screw rod 27 or 28 is moved by a motor 30, the other rotates, and the two round rods 17 and 21 are provided so as to be displaced in mutually opposite directions.

Another embodiment of the interlocking means 22 is shown in FIG. 9, in which the same reference numerals as in the previous embodiment are the same components, and the difference is that the two feed screw rods 27 and 28 are They are not connected by a mechanical transmission mechanism, and independent reversible rotary motors 30 and 31 are directly connected to the threaded rods 27 and 28, respectively.If the threaded rods 27 and 28 are threaded in the same direction, one If one motor 30 rotates by a predetermined angle, the other motor 31 is interlocked by the electrical interlocking means 22c so that it rotates by the same angle in the opposite direction.

As another example of the interlocking means 22, as shown in FIG. 8, two round bars may be connected at both ends with an endless wire or a steel band 22d.

An embodiment of the second invention (Claim 4) will be described next.

Example 3 As an example described in claim 5,
As shown in FIG. 12, the round bars are sequentially divided into first, second and third round bars 1 from the carry-in side to the carry-out side.
7, 21, and 17a are provided with a gap equal to the radius of each of these round bars, and the second round bar 21
are fixed to the machine frame 18 of the bag making machine 10, and the first round bar 17 and the third round bar 17a are connected to a mechanical connection means 32, such as a common support member or a parallel movement mechanism (FIG. 14, (see Fig. 15), so that they can be simultaneously displaced upwardly or downwardly by the same dimension with respect to the intermediate second round rod 21, and can be fixed at the displaced position. These first round bars 17 and third round bars 1
As the vertical movement means of 7a, the same means as in the first invention is used.

In addition, in the drawings, the same reference numerals as those shown in the first embodiment of the invention indicate the same configurations or parts.

Example 4 This is an example of the embodiment of claim 6 of the second invention (see FIG. 13), and is shown in the second round bar of Example 3. The second round bar 21 is movable up and down, and is connected to the first round bar 17 and the third round bar 17a by a connecting means 33 so that they can be displaced and fixed simultaneously in the same dimensions and in opposite directions.

Example 5 This is an example of the embodiment described in claim 7, and is shown in FIGS. 10 and 11.

Both the first round bar 17 and the third round bar 17a of the third embodiment are constituted by a pair of upper and lower thin round bars 17-1, 17-2 and 17a-1, 17a-2, and the bag material band It comes into contact with A or B and rotates. These thin round rods 17-1, 17-2, 17a
-1 and 17a-2 can be adjusted up and down independently when assembled to the machine frame 18.

These thin round bar rollers 17-1, 17-
2, 17a-1 and 17a-2 may be thin round rods that do not rotate.

In this fifth embodiment, the second round rod 21 having a large diameter at the center moves up and down.

In the devices of each of the above-mentioned inventions, the above-mentioned feed screw 27 or 27a or 2 is used as the drive source for the first round bar 17 or a member that moves up and down in conjunction with the first round bar.
7 and 28 are rotated by a reversibly rotating geared motor or a stepping motor 30 or 30, 31 at a predetermined rotation angle or for a predetermined time, and are interlocked with the first round bar 17 or the first round bar 17. Displace the round bar.

In order to manufacture individual bags from two bag material bands A and B using the bag making machine 10 equipped with the apparatus of each embodiment of the present invention configured as described above, these bag material bands are The belts A and B wound into rollers are mounted on original web support devices 40a and 40, respectively.
The two continuous bag material bands A and B are passed through the feed roller 41 and guided by the guide roller 42.
In the first and second embodiments of the first invention, one bag material strip, e.g. Pass it over the top of the second round bar 21, then guide another bag material band B from the bottom side of the first round bar 17 to the top of the second round bar, and then pass the two bag material bands B through the bottom of the second round bar 21. Guide rollers 20 for both A and B
Pass it through.

In the first invention, the first and second embodiments are further passed through other guide rollers 44 and 45, and then sandwiched between a pair of pinching type conveyors 11, and register marks 14a on the two bag material strips A and B. ，
14b are positioned so that they are aligned in a straight line in the transverse direction, and hanging cloths 43 are hung on the bag material bands A and B in the portion of the guide roller 42.

Next, the processing means 13, for example, if it is a hot knife type welding cutting blade, is heated to a temperature required for processing, and the register marks 14 on the two bag material bands A and B are detected by mark detection sensors 15a and 15b.
common conveyor 1 while detecting a, 14b.
1, the two bag material strips A and B are transported according to the mark pitch, and the processing means 13 is transferred each time the belt is stopped.
Processing is performed to produce individual bags.

In this case, the bag material bands A and B are guided by the guide rollers 42.
There is a transfer section D in which some tension is applied between the conveyor 11 and the conveyor 11.

In this case, in the apparatus of the present invention, the register mark 14a or 14 of one bag material band A or B is
b tends to lead, for example, if the register mark 14a of the bag material band A is ahead of the register mark 14b of the other bag material band B, the first round bar 17 should be moved slightly (for example, 2 to 5 mm). ) and stop the first round bar 17 at that position.

When the first round bar 17 is displaced in this way, the third
As shown in the figure, the area of the bag material band A that contacts the round bar 17 increases and falls within the angle α, and the area of the bag material band B that contacts the round bar 17 decreases and falls within the angle θ and The material band A receives a larger transfer load than the bag material band B, causing slippage between the bag material band A and the conveyor 11, and the transfer dimension of the bag material band A is shortened.

If the bag material band A still tends to be ahead of the other bag material band B, the round bar 17 is further raised. On the other hand, when the bag material band B tends to be ahead of the bag material band A, the round bar 17 is lowered.

Next, in order to transfer the two bag material strips A and B using the apparatus of each embodiment of the second invention, the above-mentioned method is required to transfer the two bag material bands A and B from the original fabric support devices 40a and 40b to the second round bar. Pass two bag material bands A and B in exactly the same manner as in the first invention, and then insert a third round bar 17.
The only difference is that at point a, the two bag material bands A and B are crossed again with different positions, and then passed through the guide rollers 20.

In this way, the conveyor 11 is operated in the same manner as in the first embodiment of the invention, and either bag material strips A or B, for example, bag material strip A is transported to another bag material strip B.
If there is a tendency to move ahead of the current position, both the first round bar 17 and the third round bar 17a are raised in the same direction and stopped at that position (see FIGS. 12 and 13).

If the bag material band A still tends to be ahead of the others, the first round bar 17 and the third round bar 17a are further displaced to a higher position.

On the other hand, if the bag material band B is ahead of the bag material band A, the round bars 17 and 17a are sequentially lowered.

C. Effect of the invention As mentioned above, in this first invention, the adjustment of the transfer load applied to the two strips of bag material is
The round bar 17 is made by relatively changing the contact area with the bag material bands A and B, and the first round bar 1
By stopping the bag material bands 7 in that position, when one of the bag material bands A, B tends to be ahead of the other, this can be maintained in a corrected state.

In particular, in this first invention, a second round rod 21 is provided at least on one side between the first round rod 17 and the guide roller 19 or 20 that regulates the position of the bag material bands A and B during loading and unloading. are provided, so that the bag material bands A and B can be crossed at the first round bar 17 and the second round bar 21 so that their vertical positions are reversed, and the bag material bands A and B are When the contact area with the first round bar 17 is widest, it is so large that it reaches a little less than half the circumference of the first round bar 17, and it can be moved up to twice the diameter of the first round bar.
Subtle load adjustments can be easily made by moving the round bar up and down.

Further, in the second invention, the bag material band A
and B are sequentially engaged with the three round bars 17, 21, 17a in a zigzag manner and cross-hung with each other, so that the contact surface with the bag material bands A and B can be enlarged, or If the maximum contact surface is the same as that of the first invention, each round bar 17, 21, 1
The diameter of 7a can be made smaller.

In particular, since the round bars 17 and 17a are moved simultaneously in the same direction, if the first, second, and third round bars having the same dimensions as the first invention are used, the same round bars 17,
Even with the movement dimension of 17a, the contact area changes by approximately twice, allowing for faster operation.

(Effects Unique to the Embodiment) The first round bar 17 or 17 and 17a can be moved up and down by a manual handle attached to the feed screw rod, but if a reversibly rotatable motor as shown in the figure is used, the mark detection sensor 15a, It is possible to use an automatic control device that determines the moving direction and displacement dimension of the first round bar 17 based on the difference and time difference between the detection signals before and after the detection signal 15b.

In addition, in the first embodiment, since the second round bar 21 is also a round bar having approximately the same diameter as the first round bar 17, as the first round bar 17 moves up and down, the two strips of bag material band A , the contact area between B and the second round bar increases and decreases at the same time,
Furthermore, the contact area changes over a larger range, making it easier to control the transfer load, and since the second round bar 21 is fixed to the machine frame 18, the structure is extremely simple and there is almost no risk of failure.

Example 2 In Example 2, as described above, the second round rod 21 has the same dimensions in the opposite direction in synchronization with the first round rod 17, so slight movement of these two round rods 17 and 21 Therefore, the contact area between these round bars 17, 21 and the bag material bands A, B can be greatly changed, and rapid load adjustment is easy.

Further, the interlocking means 22a of the two round bars 17 and 21 may be mechanical or electrical, but there is no particular limitation, but in the case of mechanical interlocking means, only one motor is sufficient as the driving source. In the case of electrical interlocking means, two motors are required as drive sources, but a complicated interlocking mechanism is not required.

In the third embodiment of the second invention (see FIG. 12), the second round bar 21 is fixed to the machine frame 18, so the structure is simple.

In Example 4 (see Figure 13),
In the case where the intermediate second round bar 21 moves in the opposite direction to the other round bars 17, 17a, these round bars 1
Even if the movable range of 7, 21, 17a is small, the transfer load can be changed greatly. These round bars 17,
The interlocking means 22a of 21 is the same as that of the first invention.

These operations can also be done manually, but the first
As with the second invention, automatic control is easy.

In the example 5 shown in FIGS. 10 and 11, the first thin round bars 17-1, 17-2 and the third
The upper and lower pairs of thin round bars 17a-1 and 17a-2 are arranged in pairs, so when assembling the upper and lower pairs of round bars to the machine frame 18, the transfer amount can be adjusted by adjusting the distance E between the upper and lower pairs of round bars. Adjustment sensitivity can be adjusted.

In addition, in the first and second inventions of this application, the transfer load is provided with friction plates 16a and 16b that contact and separate from the bag material band A or B for each transfer of the conventionally known intermittent transfer. If used together with a transfer dimension control device, the transfer dimension control effect will be further improved.

In this specification, each round bar 17, 21, 17a
This means that if it does not rotate, it will not rotate due to the contact resistance with the bag material bands A and B. In fact, both ends 19 shown in the figure are bearing members, and each round bar 17, 21, 17a is a sliding fit, and these can be fixed to the bearing members at both ends with setscrews.

Therefore, if the circumferential surfaces of these round bars 17, 21, 17a are damaged due to long-term use, they can be rotated around their respective axes at arbitrary angles by loosening the screws mentioned above. By doing so, the useful life of these round bars 17, 21, 17a can be further extended.

[Brief explanation of the drawing]

The drawings show typical embodiments of the present invention; FIG. 1 is a mechanical side view of the entire bag making machine incorporating the device of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a side view of the main parts of the device of the first invention, FIG. 4 is a front view taken along line 4-4 in FIG. 1, FIG. 5 is a side view of Embodiment 2 of the first invention, and FIG. 7, 8, and 9 are side views showing aspects of each coupling means of the second embodiment, FIG. 10 is a side view of the fifth embodiment, and FIG. FIG. 12 is a side view of the third embodiment, FIG. 13 is a side view showing an example of the interlocking means of the fourth embodiment, and FIG.
The figure is a side view showing an example of the interlocking means of Embodiment 3, FIG. 15 is a longitudinal sectional front view taken along the line 5-5 in FIG. FIG. Main symbols in the diagram: 10...Bag making machine, 11...Conveyor, 17...Round bar, 17a...Third round bar,
19, 20...Position regulation guide roller, 21...Second round bar, A, B...Bag material band, C...Device for controlling the transfer dimension, D...Slight tension is applied to the bag material band. transport section.

Claims (1)

[Scope of Claims] 1. A common gripping type traction conveyor that grips and conveys two bag material strips in a parallel manner so as to be able to slip thereon;
A light load device that applies a transfer load to these is provided, and a bag material strip transfer path between the traction conveyor and the light load device is a tension transfer section in which a slight tension is applied to these bag material strips, and this tension transfer section A common rod-shaped friction braking body is provided inside the bag material strips, and the axis of this friction braking body is provided in the transverse direction of each of the bag material strips, and It is provided so that its position can be moved and fixed in a direction perpendicular to the belt surface, and one of the two bag material bands has a transfer path in contact with the upper side of the friction braking body. , the other bag material band has a transfer path in contact with the lower side of the friction brake body, and the friction brake body is a single first round bar with a relatively large diameter that does not rotate, and can be carried in and out immediately. A bag material band position regulating guide roller having an axis parallel to the axis of the round bar is provided on the machine frame on the side, and the bag material band position regulating guide roller is provided on at least one side between the round bar and the carrying/unloading position regulating guide roller. A bag material band in a two-strip bag making machine, characterized in that a second round bar is provided parallel to the first round bar to cross the position of the two-strip bag material band with the first round bar position. Transfer dimension control device. 2. The two-striped rod according to claim 1, wherein the second round bar is fixed to the machine frame having substantially the same diameter as the first round bar in parallel with the first round bar. A bag material belt transfer dimension control device in a bag machine. 3. The second round bar has approximately the same diameter as the first round bar, does not rotate together, and is connected to the first round bar by an interlocking means such that the operating direction thereof is relatively opposite, and the two are simultaneously moved and fixed in the same dimension. A bag material band transfer dimension control device in a double-thread bag making machine according to claim 1, characterized in that: 4. It has a common gripping type traction conveyor that grips and transfers two strips of bag material strips in parallel in a slippable manner, and on the upstream side of this conveyor, each strip is in contact with the bag material strips,
A light load device that applies a transfer load to these is provided, and a bag material strip transfer path between the traction conveyor and the light load device is a tension transfer section in which a slight tension is applied to these bag material strips, and this tension transfer section A common rod-shaped friction braking body is provided inside the bag material strips, and the axis of this friction braking body is provided in the transverse direction of each of the bag material strips, and The bag material belt is provided at a position perpendicular to the belt surface so that it can be manually fixed, and one of the two bag material belts has a transfer path in contact with the upper side of the friction braking body. , the other bag material strip has a transfer path in contact with the lower side of the friction braking body, and the friction braking body moves three non-rotating round rods with a relatively large diameter to the two bag material strips. These three round bars are arranged in parallel with a slight gap from the carry-in side to the carry-out side, and each round bar is parallel to the surface of the bag material strip and perpendicular to the transport direction. Immediately on the loading/unloading side of the machine frame, a bag material band position regulating guide roller with an axis parallel to the axis of this round bar is installed on the machine frame. The bars are connected by mechanical coupling means,
The two round bars at both ends are provided so as to be movable and fixed in a direction perpendicular to the surface of the bag material band relative to the middle round bar. A bag material belt transfer size control device in a machine. 5. The bag material strip transfer size control device in a double-thread bag making machine according to claim 4, wherein the intermediate round bar is fixed in position with respect to the machine frame of the bag making machine. 6. Claim 4, characterized in that the intermediate round bar is connected by an interlocking means so as to operate simultaneously with the other round bars and in the same size and opposite direction as the displacement of the other round bars. A bag material belt transfer size control device in the double-line bag making machine described above. 7. The second round bar is comprised of two parallel guide rollers supported vertically and independently, and is provided on both the loading and unloading sides of the first round bar. A bag material band transfer dimension control device in a double-thread bag making machine according to item 4.