WO2014000204A1

WO2014000204A1 - Rubber feeding method and system

Info

Publication number: WO2014000204A1
Application number: PCT/CN2012/077702
Authority: WO
Inventors: 殿敏周
Original assignee: 深圳市腾科系统技术有限公司
Priority date: 2012-06-28
Filing date: 2012-06-28
Publication date: 2014-01-03

Abstract

Disclosed is a rubber feeding method and system. The method provides a constant tension adjusting step with constant tension, and the system provides a device with constant tension adjusting. Because the feeding method and system can ensure the constant tension when the rubber is feeding, and the Hooke law indicates that the elongation amounts of the rubber are the same when the tension is definite, it is sure that the length of the feeding rubber can be controlled.

Description

Rubber band feeding method and feeding system

Technical field

The invention relates to the field of a method and a system for feeding materials, in particular to a rubber feeding method and a feeding system.

Background technique

At present, when producing non-woven products such as diapers and sanitary napkins or when producing garments, many of them need to be fitted with elastics on the products. When producing these non-woven products or garments on the production line, it is necessary to assemble the rubber bands to the corresponding positions of the non-woven products or garments, such as the cuffs of the garments or the neckline or the cuffs, the interface of the diapers, so it is necessary to be the production line. Provide an elastic feeding system. The rubber feed system continuously supplies rubber to the production line. The rubber band is stored and transported in the form of an elastic band. As shown in Figure 1, the elastic band 01 generally winds the elastic wire around a core 02, which is a hollow cylinder. The body is generally a paper tube, a wooden tube, a bamboo tube, a plastic tube or a metal tube. Elastic coil 01 is wound around the core to become an elastic roll for production use. The equipment used to supply the rolled rubber to the production line is the rubber feeding system. When rubber bands are needed on the production line, the rubber reinforcement is provided according to the requirements of the production line. The rubber feeding system includes the discharging module and the feeding module. And the receiving module, the discharging module is also called the unwinding module. At present, after the use of a roll of rubber in the unwinding module, the wire needs to be stopped, and the elastic core on the unwinding module is taken out, and then The new elastic band is hung on the module, and the rubber band of the newly-replaced elastic band is connected with the rubber tail of the previous elastic band before starting to unwind. Such a discharge module will affect the efficiency of the entire production line when in use.

Summary of the invention

In order to overcome the uncontrollable deficiency of the length of the rubber fed in the current rubber feeding system, the present invention provides an elastic feeding method and an elastic feeding system having a constant tension.

First, the present invention provides a rubber tendon feeding method for providing a continuous rubber band for a production line, the method comprising a rubber constant tension adjusting step;

The step of adjusting the elastic constant tension includes the following steps:

Al, the step of adjusting the direction of the rubber band, and adjusting the direction of the rubber band applied by the reel to the prescribed direction;

A2, the step of detecting the tension on the rubber band;

A3. The step of comparing the detected tension with the set tension, if the detected tension is If the set tensions are not equal, the tension adjustment step is performed until the detected tension is equal to the set tension.

Further, in the above rubber feeding method: in the step A3, in the step of adjusting the tension:

Increase the tension of the rubber band when the detected tension is less than the set tension;

When the detected tension is greater than the set tension, the tension of the rubber band is reduced.

Further, in the above rubber feeding method: further comprising the step of continuously unwinding.

The continuous unwinding step includes the following steps:

Bl. Hang the elastic band on the first reel and release the rubber band from the elastic band at the set speed;

B2. The first elastic band is hung on the second reel, and when the elastic reel on the first reel is close to the unwinding, the tail of the elastic reel on the first reel is placed with the second The elastic band on the reel is joined at the beginning; after the elastic band on the first reel is released, the elastic reel on the second reel is continued;

B3. Hanging the next elastic band on the first release reel, and placing the rubber reel on the second reel close to the unwinding, and placing the tail of the elastic reel on the second reel with the first The elastic band on the reel is joined at the beginning; after the elastic reel on the second reel is released, the elastic reel on the first reel is continued; and the process proceeds to step B2.

Further, in the above-described elastic feeding method: the reel can swing in the radial direction of the reel when the elastic band is applied.

Further, in the above rubber feeding method: when the elastic band is applied to the elastic reel, the friction between the core of the elastic band and the reel is adjustable.

The invention also provides an elastic rib feeding system, which provides a continuous elastic rib for the production line, including a rubber constant tension adjusting device for constant tension adjustment of the elastic rib; the elastic constant tension adjusting device comprises an elastic tension sensor And a tension adjusting device for adjusting the tension during the elastic band transmission and a comparator for comparing the measured tension measured by the rubber band tension sensor with the setting device, wherein the elastic tension sensor and the tension adjusting device are respectively connected to the elastic band.

Further, in the rubber feeding system described above, the tension adjusting device is a spring adjuster, a magnet adjuster and an elastic conveying motor device disposed on the elastic band; the spring adjuster, the magnet adjuster and The control ends of the rubber conveying motor devices are respectively associated with the comparators.

Further, in the rubber feeding system described above, the method further includes: a continuous unwinding device, the continuous unwinding device comprising a unwinding bracket, at least two unwinding reels, and an elastic connecting mechanism; The at least two reels are mounted side by side on the unwinding bracket, and the axial direction of the reel is substantially the same as the direction in which the rubber band runs; the elastic connecting mechanism is disposed on the unwinding bracket.

Further, in the above-mentioned elastic feeding system: the at least two unwinding reels are mounted on the unwinding bracket to form a movable connection in which the unwinding bracket can swing in the radial direction of the unwinding bobbin.

Further, in the rubber feeding system described above, an adjustable friction mechanism is further disposed on the unwinding reel to adjust the friction between the elastic band and the reel.

The invention can ensure that the rubber band has a constant tension during the feeding process. According to Hooke's law, when the tension is constant, the elongation of the rubber band is the same, so the constant tension adjusting system can ensure the feeding. The length of the rubber band is controllable.

DRAWINGS

Figure 1 is a schematic view of the elastic band currently used.

Figure 2 is a schematic illustration of a continuous unwinding apparatus of the present invention.

Figure 3 is a block diagram of the rubber feed system of the present invention.

detailed description

Embodiment 1, shown in Figures 1 and 2, this embodiment is a production line for producing disposable diapers such as diapers and sanitary napkins, or a system for adding rubber when producing garments, and providing continuous elastic bands for the production line 4 The rubber feeding system includes a unwinding device for extracting the elastic band 4 from the elastic band 1, an elastic constant tension adjusting device 5 for constant tension adjustment of the extracted elastic band 4, and an elastic band on the production line. a production line receiving device added to the product; the unwinding device includes a unwinding bracket 2, eight unwinding reels 3, and an elastic connecting mechanism; and eight unwinding reels 3 are mounted side by side on the unwinding bracket 1, each of which is in a row Mounted on one of the traverses of the unwinding bracket 2, the axial direction of the reel 3 is substantially the same as the direction in which the elastic ribs 4 strike; the joint of the reel 3 and the beam is provided with a joint, and the reel 3 can be wound around the joint along the axis In order to ensure the unwinding effect, an adjustable friction mechanism is also provided on the discharge reel 3 to adjust the frictional force between the elastic band 1 and the reel 3.

The elastic constant tension adjusting device 5 includes an elastic tension sensor 6, a tension adjusting device for adjusting the tension during the elastic belt transmission, and a comparator for comparing the measured tension measured by the elastic tension sensor with the setting device, the elastic tension sensor And the tension adjusting device is respectively connected to the elastic band 4. The tension adjusting device is a spring adjuster 9 disposed on the elastic band, the magnet adjuster 8 and the elastic conveying motor device 7; the control ends of the spring adjuster 9, the magnet adjuster 8 and the elastic conveying motor device 7 are respectively compared with The connection of the device, here, because the tension system has a negative feedback, can ensure that the tension of the rubber band is maintained at a constant state, so that it can be ensured that the appropriate rubber band length can be cut when the rubber band is used downstream. The feeding process of the rubber feeding system of the embodiment is easy to control, and the continuous feeding is reliable. The feeding process includes the following steps:

The first step is the unwinding step of pulling the rubber band out of the elastic band;

This step includes the following steps:

1. Hang the elastic band on the first release reel and release the rubber band from the elastic band according to the set speed;

2. Hang the next elastic band on the second reel, and place the tail of the elastic roll on the first reel and the second when the elastic roll on the first reel is nearing the unwinding. The elastic band on the reel is joined at the beginning; after the elastic band on the first reel is released, the elastic reel on the second reel is continued;

3. Hang the next elastic band on the first reel, and place the tail of the elastic roll on the second reel and the first one when the elastic roll on the second reel is nearing the unwinding. The elastic band on the reel is joined at the beginning; after the elastic reel on the second reel is released, the elastic reel on the first reel is continued;

In the unwinding step: the reel can swing in the radial direction of the reel when applying the elastic band; the friction between the core of the elastic reel and the reel when the elastic reel is applied with the elastic on the reel Adjustable.

Followed by the constant tension adjustment step of the elastic tension adjustment of the extracted rubber band; the following steps are included in the elastic tension constant adjustment step:

i. adjusting the direction of the rubber band, adjusting the direction of the rubber band applied by the reel to the prescribed direction; j, detecting the tension on the rubber band;

k. In the step of comparing the detected tension with the set tension, if the detected tension is not equal to the set tension, the step of adjusting the tension is performed until the detected tension is equal to the set tension.

When the above measured tension is different from the set tension, there are two states. One is that when the detected tension is less than the set tension, the resistance of the spring adjuster and the magnet adjuster to the elastic band is increased, and at the same time, the rubber conveying motor pair is increased. The tension of the rubber band until the detected tension is equal to the set tension;

The second is to reduce the resistance of the spring adjuster and the magnet adjuster to the rubber band when the detected tension is greater than the set tension, and reduce the tension of the elastic belt conveying motor to the elastic band until the detected tension and setting The tension is equal.

Finally, the production line is added to the production line in the production line, and the rubber is applied to the product.

Claims

claims

1. An elastic band feeding method to provide continuous elastic bands for the production line, characterized in that: the method includes a constant tension adjustment step of the extracted elastic bands,

The rubber band constant tension adjustment step includes the following steps:

Al. Steps to adjust the direction of the rubber band, adjust the direction of the rubber band released by the release reel to the specified direction;

A2. Steps to detect the tension on the rubber band;

A3. Compare the detected tension with the set tension. If the detected tension is not equal to the set tension, perform the tension adjustment step until the detected tension is equal to the set tension.

2. The rubber band feeding method according to claim 1, characterized in that: in the step A3, in the step of tension adjustment:

When the detected tension is less than the set tension, increase the tension of the rubber band;

When the detected tension is greater than the set tension, reduce the tension of the rubber band.

3. The elastic feeding method according to claim 1 or 2, characterized in that: it further includes an unwinding step of extracting the elastic band from the elastic roll, and the unwinding step includes the following steps:

Bl. Hang the rubber band roll on the first unwinding reel and unwind the elastic band from the rubber band roll at the set speed;

B2. Hang the next elastic roll on the second unwinding reel, and when the elastic roll on the first unwinding reel is almost finished unwinding, connect the tail of the elastic roll on the first unwinding reel with the second unwinding reel. The elastic rolls on the first unwinding reel are connected at the beginning; after the elastic rolls on the first unwinding reel are finished, continue to put the elastic bands on the second unwinding reel;

B3. Hang the next elastic roll on the first unwinding reel, and when the elastic roll on the second unwinding reel is almost finished unwinding, connect the tail of the elastic roll on the second unwinding reel with the first unwinding reel. Connect the beginning ends of the elastic rolls on the second unwinding reel; continue to unwind the rubber band rolls on the first unwinding reel; turn to step B2.

4. The elastic band feeding method according to claim 3, characterized in that: the unwinding shaft can swing in the radial direction of the unwinding shaft when the elastic band is being applied.

5. The elastic band feeding method according to claim 3, characterized in that: when the rubber band is rolled on the unwinding reel and the elastic band is applied, the friction force between the core of the elastic band and the unwinding reel is adjustable.

6. An elastic band feeding system that provides continuous elastic bands for the production line. It is characterized by: including A rubber band constant tension adjustment device (5) for adjusting the constant tension of the pulled out rubber band. The rubber band constant tension adjustment device (5) includes a rubber band tension sensor (6), which adjusts the tension during the rubber band transmission process. An adjusting device and a comparator that compares the measured tension measured by the elastic band tension sensor with the setting device. The elastic band tension sensor (6) and the tension adjusting device are respectively connected to the elastic band (4).

7. The elastic feeding system according to claim 6, characterized in that: the tension adjustment device includes a spring adjuster, a magnet adjuster and an elastic conveying motor device arranged on the elastic; the spring The control ends of the regulator (9), the magnet regulator (8) and the rubber band conveying motor device (6) are respectively connected with the comparator.

8. The rubber band feeding system according to any one of claims 6 or 7, characterized in that: the unwinding device includes an unwinding bracket (2), at least two unwinding reels (3), and an elastic band connection. Mechanism; The at least two unwinding reels (3) are installed side by side on the unwinding bracket (2), and the axial direction of the unwinding reel (3) is generally consistent with the direction of the rubber band (4); The rubber band connecting mechanism is arranged on the unwinding bracket (2).

9. The rubber band feeding system according to claim 8, characterized in that: the at least two unwinding reels (3) are installed on the unwinding bracket (2), forming the unwinding reel (3) on the unwinding bracket (2) A movable connection that can swing in the radial direction of the unwinding shaft.

10. The rubber band feeding system according to claim 8, characterized in that: on the unwinding reel

(3) There is also an adjustable friction mechanism to adjust the friction between the elastic roll and the unwinding reel.