JP2007083585A - Paper bag manufacturing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper bag manufacturing device which has a simple structure, accurately stops a tubular body at a specified position on a carrying line as much as possible, and in addition, further increases the manufacturing efficiency of a paper bag. <P>SOLUTION: For this paper bag manufacturing device 1, processing means 6 and 7 which apply a specified processing to the tubular body are inserted in a carrying line 2 having a carrying means 4 such as a belt or a chain which carries the tubular body of a paper. In the paper bag manufacturing device 1, the carrying means 4 is driven through an index mechanism 30 of which the major constituent element is a cam. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a paper bag manufacturing apparatus in which a paper bag body as a final product is manufactured by applying processing such as adhesive application processing or adhesive tape sticking processing to a paper tube body.

  2. Description of the Related Art Conventionally, in a paper bag manufacturing apparatus, a processing unit that performs a predetermined processing process on a paper tube body is disposed in the middle of a transport line having a transport unit such as a belt or a chain.

  As typical processing means disposed in the middle of this transport line, for example, an adhesive sealing means for a mouth sealing tape to be attached to the mouth of a paper bag, and an adhesive application process to the bottom. There are an adhesive application processing means to be performed, a press processing means for pressing the mouth portion where these tapes are adhered or the bottom portion where the adhesive is applied, and the like.

  Each processing means described above is driven in conjunction with a conveying line having conveying means such as a belt or a chain.

  Therefore, according to the paper bag manufacturing apparatus described above, when the tube body of the paper bag is disposed upstream of the transport line, the tube body is transported downstream by the transport line, and during that time, the paper bag When the tube body is subjected to a predetermined processing and reaches the downstream of the transport line, the bottom of the tube body is sealed, and the mouth part is sealed with a tape for mouth sealing Paper bags will be manufactured.

By the way, in the conventional paper bag manufacturing apparatus described above, the conveying means of the conveying line is driven by a mere motor. Therefore, due to the variation in the tube body traveling position based on the mismatch of the rotational speeds of the motors, The tube body cannot be stopped at an accurate processing position by various processing means.For this reason, when processing by the processing means, for example, in the case of adhesive application processing by the adhesive application means, an adhesive ( Paste of the glue) occurred, resulting in defective paper bags and machine stains.

It is possible to solve the above-mentioned difficulties by using a stepping motor and a control means for controlling the motor. However, since an expensive motor and control device are used, the entire device is complicated and expensive. In addition, since the operating torque is relatively small, the rise of the machine operation is slow and the paper bag manufacturing speed is reduced.

In view of the circumstances described above, the present invention provides a paper bag manufacturing apparatus that has a simple structure and stops the tube body as accurately as possible at a certain position on the transport line, and further improves the manufacturing efficiency of the paper bag. The purpose is to do.

  In order to solve the above-described problems, in the present invention, a tube body transport line for transporting a paper tube body for paper bag manufacturing by a transport means such as a belt or a chain, and the paper tube interposed in the tube body transport line. In a paper bag manufacturing apparatus having at least processing means for performing predetermined processing on a body, the transport means is driven via an index mechanism having a cam as a main component.

  According to the paper bag manufacturing apparatus described above, when a conveying line having conveying means such as a belt or a chain that conveys a paper tube body is driven through an index mechanism having a cam as a main component, originally a backlash is generated. The indexing mechanism drives the conveying means, and the index mechanism increases the initial conveying torque of the conveying means and further stops the operation quickly. Therefore, the positioning stop accuracy (indexing accuracy) of the tube body conveyed on the conveying line is increased. Therefore, the processing of the tube body by the processing means becomes more accurate, the generation of defective products can be reduced as much as possible, and the processing speed of the paper bag can be improved. Thus, the manufacturing efficiency of the paper bag can be further increased.

Hereinafter, an embodiment of a paper bag manufacturing apparatus according to the present invention will be described in detail.

FIG. 1 is a conceptual front view showing a paper bag manufacturing apparatus 1 according to the present invention.

  This paper bag manufacturing apparatus 1 is arranged in the left-right direction of the drawing and is opposed to the upper and lower sides, and is a roller conveyor type conveying means comprising a plurality of rollers 2 and 3 for holding and conveying a paper tube body therebetween. 4 and a processing means for performing a predetermined processing on the paper tube body, which is disposed between the upstream A and the downstream B of the transport line 5. Then, as the processing means, there are provided a sticking processing means 6 for the mouth sealing tape to be stuck to the mouth of the paper bag, and a press processing means 7 for press-working the mouth to which these tapes are stuck. An example is shown.

  In FIG. 1, reference numeral 8 denotes a feed roll unit, and this feed roll unit 8 feeds the tube body between the rollers 2 and 3 of the conveying means 4. Reference numeral 9 denotes a stopper that moves up and down at a predetermined timing, and this stopper 9 allows the tube body to enter between the pair of rollers 2 and 3 of the conveying means 4 at a predetermined timing.

  On the other hand, the conveying means 4 composed of the plurality of rollers 2 and 3 described above, the sticking processing means 6, the feed roll unit 8, the stopper 9, etc. are set at a predetermined timing by one driving means 20 via the interlocking means 10. It is driven by.

  Among these, the interlocking means 10 includes a power transmission belt 11 and a driven pulley 12 around which the power transmission belt 11 is wound.

  On the other hand, the drive means 20 includes a known drive motor and an index mechanism 30 having a cam shown in FIG. 2 connected to the drive motor as a main component.

  In the embodiment shown in FIG. 2, the index mechanism 30 has a rotating cam 32 fixed to an input shaft 31 rotated by a drive motor (not shown) and a roller 33 fitted in a cam groove 32a of the rotating cam 32. And a roller gear cam mechanism 35 having a plurality of roller gears 34, and an output shaft 36 is fixed to the roller gear 34.

  The index mechanism 30 may be one using a barrel cam mechanism 40 as shown in FIG. 3 or a parallel cam mechanism (not shown) in addition to the roller gear mechanism 35 shown in FIG. Any type of index mechanism may be used as long as the index mechanism 30 has a mechanism as a main component.

  According to the paper bag manufacturing apparatus 1 configured as described above, when the drive motor 50 of the drive means 20 shown in FIG. 1 is driven, the driving force is transmitted to the input shaft 31 of the index mechanism 30 shown in FIG. Is transmitted to.

When power is transmitted to the output shaft 36, the power is transmitted through a drive pulley 51 shown in FIG. 1 fixed to the output shaft 36 and a power transmission belt 52 wound around the drive pulley 51. This is transmitted to the driven pulley 12 of the conveying means 4 composed of the individual rollers 2 and 3, whereby the conveying means 4 starts to be driven.

At this time, as shown in FIG. 2, since the output shaft 35 is driven by a roller gear 34 without backlash and having a large initial torque, the plurality of rollers 2 and 3 of the conveying means 4 start to rotate instantaneously. To do.

2, when the rotation of the rotary cam 32 is constant, the roller 33 of the roller gear 34 has a drive stop cam groove (a cam groove 32a formed in a spiral shape) among the cam grooves 32a of the rotary cam 32. The roller gear 34 stops instantaneously (for example, a cam groove in a parallel portion), and the roller gear 34 stops instantaneously. For this reason, the plurality of rollers 2 and 3 of the conveying means 4 also instantaneously rotate. The paper tube body gripped between the plurality of rollers 2 and 3 is thereby instantaneously stopped at a predetermined position on the transport line 2. Therefore, since the paper tube body is instantaneously stopped at a predetermined position on the transport line 2 and travel is instantaneously started from there, the variation in the tube body travel stop position can be reduced as much as possible.

In the above-described embodiment, as the processing means, the mouth sealing tape sticking processing means 6 attached to the mouth of the paper bag and the press processing for pressing the mouth to which these tapes are attached. The means 7 is driven through the drive pulley 56 fixed to the drive shaft 55 of the drive motor 50 shown in FIG. 1 and the power transmission belt 11 wound around the drive pulley 56 without using the index mechanism 30.

As described above, according to the paper bag manufacturing apparatus 1 described above, the index line mechanism having the cam mechanism as the main component, the transport line 2 having the transport means 4 such as a belt or a chain for transporting the paper tube body. When driven through the driving means 20 having the intervening 30, the tube body transported by the index mechanism 30 without backlash stops its transport instantaneously, so that its positioning stop accuracy (indexing accuracy) is extremely increased. Further, the processing of the tube body by the processing means can be performed more accurately to reduce the occurrence of defective products as much as possible, and the initial torque of the machine operation is increased by the index mechanism 30 and the operation is instantaneously performed. Can be stopped, and the rise and stop speed of the transport means can be further improved to improve the production efficiency of paper bags. So that the can be layer improved.

  As described above, the present invention is suitable for a paper bag manufacturing apparatus that has a simple structure, stops the tube body as accurately as possible at a certain position on the transport line, and further improves the manufacturing efficiency of the paper bag. Yes.

FIG. 1 is a conceptual front view of a paper bag manufacturing apparatus according to the present invention. FIG. 2 is a conceptual front view of the index mechanism. FIG. 3 is a conceptual front view showing another index mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Paper bag manufacturing apparatus 4 ... Conveyance means 5 ... Tube body conveyance line 6, 7 ... Processing means 30 ... Index mechanism

Claims (3)

A tube transport line for transporting a paper tube body for paper bag manufacture by transport means such as a belt or a chain, and a processing for performing a predetermined processing on the paper tube body interposed in the tube transport line. A paper bag manufacturing apparatus having at least means,
An apparatus for manufacturing a paper bag, wherein the conveying means is driven through an index mechanism having a cam as a main component.
The paper bag manufacturing apparatus according to claim 1, wherein the index mechanism is a roller gakam mechanism.
The paper bag manufacturing apparatus according to claim 1, wherein the index mechanism includes a barrel cam mechanism.

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