JPH07276542A - Continuous feeding device of bag manufacturing film - Google Patents

Abstract

PURPOSE:To contrive automation of a bag making machine in which a bag making operation is continued, by a method wherein a length piling upon the final cut end of a film material during bag manufacturing is ejected from the head of a packing material drum and preparation performing superposition sticking of a double-sided tape is repeated here. CONSTITUTION:Cutting marks which are being printed at fixed intervals to film materials 7 each of the first or second packing material drums 8, 9, which are during bag manufacturing, are sent to a support surface by a feed motor M while reading by a sensor 42. During driving of the feed motor M, a number of reading times by the sensor 42 are driven by the motor M, which is stored in an encoder 38, only the last cutting is performed by a cutting edge 32 and after several pulses, the feed motor M is suspended by the encoder 38. It is only the final cutting time that the film material 7 is cut by the cutting edge 32 of the second cylinder 30 and suspended.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The continuous film-feeding device for bag-making according to the present invention is a flat film-shaped film material, a tube-shaped film material obtained by stacking two sheets and welding both side edges, or one film in the bag-making process. A first packaging material drum made of a film material for welding two folded parts such as edges and a second packaging material drum made of the same continuous film material as the two,
It is mounted on the packaging material supply table rail at the rear of the packaging machine table so that it can be moved left and right, and is provided so that it can be moved left and right by a cylinder or the like, so that continuous bag making by the bag making machine can be automated.

[0002]

2. Description of the Related Art As disclosed in Japanese Patent Publication No. 54-3265, there is known a device for automatically correcting the intermittent feed amount to a bag-making machine or the like for a tubular film provided with a photoelectric mark.
From a flat tubular film material, a tubular film material in which two sheets are stacked and welded on both edges, or a film material in which one film is folded in the feed direction in the bag making process and two folded parts such as edges are welded The first packaging material drum and the second packaging material drum made of the same continuous film material are mounted on the rails of the packaging material supply table at the rear of the bag making machine frame so that they can move left and right freely, It is not possible to find a continuous film-feeding device for bag-making, which is made to be movable left and right or the like so that the bag-making machine makes continuous bag-making.

[0003]

In view of the above, the present invention has been made.
The object is to automate the bag making operation of the bag making machine.

[0004]

The present invention, which meets the above-mentioned object, has a flat tubular film material, a tubular film material in which two sheets are overlapped and both side edges are welded, or one sheet in a bag-making process. A first packaging material drum made of a film material for folding two films in the feeding direction and welding two folded parts such as edges, and a second packaging material drum made of the same continuous film material as those of the bag making machine. On the rail of the packaging material supply table at the rear part of the frame, it is freely mounted on a loading frame that is movably provided by a cylinder, etc., and the lack of film is detected at the front part of each packaging drum of the loading frame by each swing. A deficiency signal device that generates a signal to instruct replacement of a spare packaging material drum, and an encoder after detecting and cutting the final cutting mark of the film material of the first or second packaging material drum supplied to the bag making machine frame. For a few pulses The head of the packaging material drum, which is composed of a sensor to be transferred, and which serves as a spare, repeats the preparation for sticking the double-sided tape over the projecting length overlapping the final cut end of the film material in the bag making, The present invention relates to a continuous film-feeding device for bag-making, which is capable of continuous bag-making.

[0005]

According to the present invention, a flat tubular film material, a tubular film material in which two sheets are stacked and welded on both side edges, or one film is folded in the feeding direction in the bag making process, and two edges such as edges are folded. A first packaging material drum 8 made of a film material for welding the parts and a second packaging material drum 9 made of the same continuous film material as those of the two are connected to a rail 3 of a packaging material supply table 2 at the rear of the bag making machine frame 1. In addition, a loading frame 5 movably provided by a cylinder 6 or the like is freely mounted on the loading frame 5, and a film deficiency detection signal is generated in front of each of the packaging material drums 8 and 9 of the loading frame 5 by each swing. Deficiency signal device 15 for instructing replacement of the spare packaging material drum, and after detecting and cutting 7 final cutting marks of the film material of the first or second packaging material drum 8 or 9 supplied to the bag making machine frame 1. , Several pulses are transferred by encoder 38 And a double-sided tape 41 is repeatedly laid on the front end of the packaging material drum, which is composed of a sensor 42, and a length overlapping the final cut end of the film material 7 in the bag-making process. The present invention relates to a continuous film-feeding device for bag-making, which is capable of continuous bag-making, and is particularly suitable for contributing to continuous non-stop bag-making of a packaging bag supplied to a plurality of arm pairs of a packaging machine.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The attached drawings show an embodiment of the present invention. FIG. 1 is a perspective view of a bag making machine seen from the rear side, and FIG. 2 is a side view showing a depletion detection operation of a depletion signal device. 3 is a side view seen from the opposite side of FIG. 1, FIG. 4 is an enlarged side view of the main parts of FIG. 3,
FIG. 5 is a perspective view of the final cut end of one film material and the leading end of the other film material, which is a perspective view immediately before continuous sticking with a double-sided tape, and FIG. 6 is a perspective view immediately after the continuous sticking.

Reference numeral 1 denotes a continuously operating bag making machine frame, 2 is a low packaging material supply base at the rear portion of the frame, and the supply base 2 has rails 3 in the left-right direction and a pair of shock absorbers 4 on the rails 3. The loading frame 5 to be alternately actuated is placed so that it can be moved left and right freely. The loading frame 5 is connected to the cylinder 6 at the center and has a flat tubular film material 7 on both sides, a tubular film material 7 in which two sheets are stacked and both side edges are welded, or 1 in a bag making process.
A first packaging material drum 8 made of a film material that folds a single film in the feeding direction and welds two folded parts such as edges.
Then, the second packaging material drum 9 made of the same continuous film material 7 as that of the two is mounted on the shafts 5a and 5a of the loading frame 5 parallel to the rails 3 and 3 in a freely exchangeable manner. The first packaging material drum 8 and the second packaging material drum 9 are not manufactured at the same time,
One of them is a bag-making drum and the other is a spare drum. The spare drum may be prepared during the bag-making process of the bag-making drum described above, and is not maintained at the same time as shown in FIG. Guide rolls 10, 11 and 12 are provided in a V-shaped arrangement on a front frame 5b projecting from the packaging drums 8 and 9 of the loading frame 5 to the front.

The guide roll 10 is a roll for detecting the deficiency of the film material 7 in either the first packaging material drum 8 or the second packaging material drum 9, and as shown in FIGS. Depletion signal devices 15 and 15 (swing switches) for each drum are provided on the side surface of the support arm 13 projecting from both sides from 5b in a wing shape. The deficiency signal devices 15 and 15 are composed of a swing switch and a small lever 14 having a small pin 14a protruding to the lower surface, and the small pin 14a is brought into contact with the feeding film material 7 covering the annular groove 10a provided in the guide roll 10. Small lever 14
Is held horizontally, and when the film material 7 is deficient, the small pin 14a falls into the annular groove 10a as shown in FIG. The deficiency signal devices 15 and 15 cause the first packaging material drum 8 or the second packaging material drum 8 which is a spare drum to respond to the signal.
The replacement with the packaging material drum 9 is instructed.

The guide roll 12 is responsible for the connection of the film material 7 according to FIGS. In the guide roll 12,
The horizontal portion 17 is provided with a lever 16 through which a cutting opening 18 is transparently provided, and an upright portion 19 of the lever 16 supports a check 20 for the film material 7 which is hung on the base of the horizontal portion 17 and pivoted. The lever 16 is supported by the rod 22 of the first cylinder 21 provided on the bag making machine frame 1 on the lower surface of the front end of the horizontal portion 17, and supports the arm 23 protruding from the bag making machine frame 1 toward the packaging material supply table 2. The guide roll 12 is held at the same height as the surface 24, and the guide roll 12 is provided with a fan-shaped stopper 25 projecting obliquely rearward, and the front frame 5b is provided with a lever 16.
Stopper pins 26 and 27 that determine the swing range of the (fan-shaped stopper 25) are provided.

The film material 7 delivered from the first or second packaging drum 8, 9 passes through the guide rolls 10-12 and the horizontal portion 17 of the lever 16. The arm 23 is provided with the support surface 24, and a second end protruding upward and rearward from the rear end.
The arm 28 is formed and the second arm 28 has a horizontal device surface 2
At the lower end of the rod 31 of the second downward facing cylinder 30 provided at 9 (higher than the support surface 24), a cutting blade 32 facing the cutting opening 18 is provided. Further, the horizontal device surface 29 has a horizontal portion 17 of the lever 16 on the rod 22 of the first cylinder 21.
In addition to providing a pressing member 35 on the rod 34 of the downwardly facing third cylinder 33, a backward facing fourth cylinder 36 having a rod 37 for kicking the upper end of the check 20 in a timely manner is installed.

The support surface 24 has a first or second portion during bag making.
The cutting marks printed on the film materials 7 of the packaging material drums 8 and 9 at regular intervals are read by the sensor 42 and fed by the feed motor M. The length of the film material 7 is set to be several times as long as one bag-making process. While the feed motor M is being driven, the number of readings by the sensor 42 is driven by the motor M and stored in the encoder 38. Only cutting is performed by the cutting blade 32, and after several pulses, the encoder 38
Thus, the feed motor M is stopped. Film material 7 is second
It is only at the final cutting of the film material 7 during bag making that it is cut by the cutting blade 32 of the cylinder 30 and stopped. In the other bag-making machine frame, the bag-making is continued without a pause, and the roll 40 of the dancing roll device 39 rises to absorb the insufficient length, so that the final cutting end described above does not move and the feed motor M is operated. Roll 40 is restarted
Just before the above shortage absorption of the film material 7 due to the rise of
8, the speed of rotation is increased, and the dancing roll device 3
The roll 40 of 9 is lowered.

As is clear from the above, due to the lack of the film material 7 during bag making, a rapid speed is required to connect the film material of the spare packaging material drum. The present invention is
As shown in FIGS. 5 and 6, a length for connection was set on one of the spare packaging drums, and one side of the double-sided tape 41 was pre-adhered thereto and pressed by the non-return stopper 20 to be replaced. When the rod 37 of the fourth cylinder 36
When the rod 34 of the third cylinder 33 descends at the same time as the upper part of the lever is pushed, the presser 35 is acted on the lever 16 to make a rapid connection.

This embodiment uses the first packaging material drum 8 and the second packaging material drum 9 for supplying one of them to the bag making machine frame 1 as a spare one after another, as already described in part. At the beginning of the film material 7 of each drum, a double-sided tape is overlaid by projecting a length that overlaps the final cut end of the film material in the bag making, and the above-mentioned non-returning stopper 20 prevents the reverse movement. In preparation for the lack of film material in the packaging material drum during bag making, the replacement signal is issued by the lack signal to move the final cut end of the film material 7 during bag making together with the loading frame 5 and the fourth cylinder. , And the third cylinder and the like can be continued in a short time. Therefore, effective actions and effects can be expected together with the film deficiency signal device 15, the encoder 38, the sensor 42, and the like.

[0014]

EFFECTS OF THE INVENTION The present invention has the above-described structure and function, and is particularly suitable for a bag-making machine for supplying an automatic packaging machine after bag-making,
effective.

[Brief description of drawings]

 The accompanying drawings show one embodiment of the present invention.

FIG. 1 is a perspective view of a bag making machine as seen from the rear,

FIG. 2 is a side view showing a depletion detection operation of a depletion signal device,

3 is a side view seen from the opposite side of FIG. 1,

FIG. 4 is an enlarged side view of the main part of FIG.

FIG. 5 is a perspective view of a final cut end of one film material and a leading end of the other film material, which is a perspective view immediately before continuous sticking with a double-sided tape;

FIG. 6 is a perspective view immediately after the continuous sticking.

[Explanation of symbols]

1 → bag making machine frame 2 → packaging material supply stand 3 → rail 4
→ Shock absorber 5 → Loading frame 5a → Shaft 5b → Front frame
6 → cylinder 7 → film material 8 → first packaging material drum 9 → second packaging material drum 10, 11, 12 → guide roll 10a → ring groove 13 →
Support arm 14 → small lever 14a → small pin 15 → deficiency signal device 16 → lever 17 → horizontal part 18 → cut opening 19 → upright part 20
→ Non-return 21 → 1st cylinder 22 → Rod 23 → Arm 2
4 → Supporting surface 25 → Fan-shaped stopper 26, 27 → Stopper pin 28
→ second arm 29 → horizontal device surface 30 → second cylinder 31 → rod 32 → cutting blade 33 → third cylinder 34 → rod 35 → pressing 3
6 → 4th cylinder 37 → rod 38 → encoder 39 → dancing roll device 40 → roll 41 → double-sided tape 42 → sensor M → feed motor

Claims (1)

[Claims] 1. A flat tubular film material, a tubular film material in which two sheets are overlapped and welded on both side edges, or one film is folded in the feeding direction in a bag making process, and two folded parts such as edges are formed. The first packaging material drum made of the film material to be welded and the second packaging material drum made of the same continuous film material can be moved to the rail of the packaging material supply table at the rear part of the bag making machine frame by a cylinder or the like. It is mounted on a loading frame provided on the loading frame in a freely exchangeable manner, and at the front part of each packaging material drum of the loading frame, a film depletion detection signal is generated by each swinging and a depletion signal for instructing replacement of a spare packaging material drum The above-mentioned packaging material, which comprises a device and a sensor for transferring several pulses by an encoder after detecting and cutting the final cutting mark of the film material of the first or second packaging material drum supplied to the bag making machine frame, Drum The bag is characterized in that the head is made to project a length that overlaps the final cut end of the film material in the bag making, and the double-sided tape is repeatedly stuck on the head to make the bag making continuous. Continuous film feeder.