阅读说明：本技术 一种卷筒纸定位倒卷取废方法 (Method for positioning, rewinding and waste-taking of roll paper ) 是由 黄江伟 王培学 张健 肖勇 成竹良 孔恒 余圣军 于 2020-04-21 设计创作，主要内容包括：本发明公开一种卷筒纸定位倒卷取废方法,主要包括控制系统、放卷轴、纠偏机构、检测机构以及收卷轴,设定料卷从放卷轴处展开,经过取废机构,牵引机构,纠偏机构,检测机构,最后由收卷轴收卷,牵引机构配置有编码器,所有机构由控制系统控制；放卷轴与收卷轴均配置对应的正反转电机,放卷轴与牵引机构之间设有取废机构,检测机构包括检测传感器、相机、正面光源与反面光源,料卷经过第一纠偏机构后会先经过检测传感器检测每个版幅的位置,再经过相机拍摄记录。采用本发明的方法步骤进行卷筒纸的规模化品检,能够对卷筒纸进行全面检测以及定位倒卷取废,保证检测、取废工序以及设备运行的连贯性,提高品检效率。(The invention discloses a web positioning, rewinding and waste-taking method, which mainly comprises a control system, an unwinding shaft, a deviation-correcting mechanism, a detection mechanism and a winding shaft, wherein a set material roll is unwound from the unwinding shaft and passes through the waste-taking mechanism, a traction mechanism, the deviation-correcting mechanism and the detection mechanism, and is finally wound by the winding shaft, the traction mechanism is provided with an encoder, and all the mechanisms are controlled by the control system; the unwinding shaft and the winding shaft are both provided with corresponding positive and negative rotating motors, a waste taking mechanism is arranged between the unwinding shaft and the traction mechanism, the detection mechanism comprises a detection sensor, a camera, a front light source and a back light source, and the material roll can firstly pass through the position of each version width detected by the detection sensor after passing through the first deviation rectification mechanism and then is shot and recorded by the camera. The method steps of the invention are adopted to carry out large-scale quality inspection on the roll paper, can carry out comprehensive detection and positioning and rewinding waste, ensures the continuity of detection and waste extraction processes and equipment operation, and improves the quality inspection efficiency.)

1. A web positioning, rewinding and waste-taking method is characterized in that: the method specifically comprises the following steps:

(1) the set material roll is unfolded from the unwinding shaft, passes through the waste taking mechanism, the traction mechanism, the deviation correcting mechanism and the detection mechanism, and is finally wound by the winding shaft, the traction mechanism is provided with an encoder, and all the mechanisms are controlled by the control system;

(2) splicing a paper head at the starting end of a first coil stock with waste materials, butting waste paper at least at a distance between a detection mechanism and a winding shaft, starting equipment to enable the detection mechanism to detect products of each version width in the coil stock, and recording the position of an unqualified product by a control system;

(3) after the tail end paper head of the first coil leaves the unwinding shaft, the equipment is suspended, the second coil is wound on the unwinding shaft, the head end paper head of the second coil is butted with the tail end paper head of the first coil, and the equipment is restarted, so that the first coil is completely detected by the detection mechanism;

(4) after the tail end paper head of the first coil passes through the detection mechanism, the equipment starts to rotate reversely, namely the winding shaft serves as an unwinding shaft, the unwinding shaft serves as a winding shaft, and according to the position of the unqualified product of the first coil recorded by the control system, the first coil runs reversely and is removed through the waste taking mechanism;

(5) after the first coil is subjected to the waste taking process, the equipment is operated in the forward direction again, when the head of the first coil reaches the winding shaft, the waste paper butted in the step (2) is removed, the head of the first coil is attached to the winding shaft, then the first coil is wound in the forward direction, and after the first coil completely passes through the detection mechanism, the detection mechanism is started to detect the subsequent second coil;

(6) repeating the step (3), after the tail end paper head of the second coil material roll leaves the unwinding shaft, suspending the operation of the equipment, arranging a third coil material roll on the unwinding shaft, butting the head end paper head of the third coil material roll with the tail end paper head of the second coil material roll, and restarting the equipment to enable the second coil material roll to completely pass through the detection of the detection mechanism;

(7) repeating the step (4), wherein after the tail end paper head of the second coil passes through the detection mechanism, the equipment starts to rotate reversely, and the second coil runs reversely to remove the unqualified products through the waste taking mechanism according to the position of the unqualified products of the second coil recorded by the control system;

(8) repeating the step (5), after the second coil roll finishes the waste taking process, the equipment operates in the forward direction again, when the head of the second coil roll reaches the winding shaft, namely the first coil roll is completely positioned on the winding shaft, the equipment stops operating, the tail end head of the first coil roll is separated from the head of the second coil roll, the first coil roll is unloaded from the winding shaft, then the head of the second coil roll is attached to the winding shaft, forward winding is continued, and after the second coil roll completely passes through the detection mechanism, the detection mechanism is started to detect a subsequent third coil roll;

(9) and (5) repeating the steps (6) to (8), completing the waste winding process of the third coil, completing the detection of the fourth coil, and so on, completing the waste winding process of the Nth coil, and completing the detection of the (N + 1) th coil.

2. A web positioning rewind waste method as defined in claim 1, wherein: the device also comprises an infrared alignment sensor which can form a reference line on the unwinding shaft and the winding shaft.

3. A web positioning rewind waste method as defined in claim 1 or 2, wherein: the detection mechanism comprises a detection sensor, a camera, a front surface light source and a back surface light source, and the material roll needs to pass through the detection sensor to detect the position of each plate, and then is shot and recorded by the camera.

Technical Field

The invention belongs to the technical field of roll paper detection, and particularly relates to a roll paper positioning, rewinding and waste-taking method.

Background

Some packing equipment exist with single paper, some are web like partial tobacco bale machine, the packing carton that provides no longer is single individual, but the packing carton of the reel that the reel printed, the packing carton of reel is on web printing equipment, through cutting equipment after the printing, cut into the individual of a roll according to required quantity branch, also known as a dish, can have manual work and equipment to inspect the quality on the sheet-by-sheet product, but the web is rolled up inside, the quality inspection is just more troublesome, it is more troublesome to lean on the human eye, inspection efficiency is low, it is incomplete to inspect, only can rely on inspection machine equipment to inspect, but it needs to pass through other processes to get useless, the web unreel repeatedly many times and the rolling, it is long consuming time, it is low to get useless efficiency.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a method for positioning, rewinding and discarding roll paper, which can perform overall detection, recording of defective product position, and positioning, rewinding and discarding of roll paper, and which is easy to operate and efficient.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the invention relates to a method for positioning, rewinding and taking waste roll paper, which specifically comprises the following steps:

(1) the set material roll is unfolded from the unwinding shaft, passes through the waste taking mechanism, the traction mechanism, the deviation correcting mechanism and the detection mechanism, and is finally wound by the winding shaft, the traction mechanism is provided with an encoder, and all the mechanisms are controlled by the control system;

(2) splicing a paper head at the starting end of a first coil stock with waste materials, butting waste paper at least at a distance between a detection mechanism and a winding shaft, starting equipment to enable the detection mechanism to detect products of each version width in the coil stock, and recording the position of an unqualified product by a control system;

(3) after the tail end paper head of the first coil leaves the unwinding shaft, the equipment is suspended, the second coil is wound on the unwinding shaft, the head end paper head of the second coil is butted with the tail end paper head of the first coil, and the equipment is restarted, so that the first coil is completely detected by the detection mechanism;

(4) after the tail end paper head of the first coil passes through the detection mechanism, the equipment starts to rotate reversely, namely the winding shaft serves as an unwinding shaft, the unwinding shaft serves as a winding shaft, and according to the position of the unqualified product of the first coil recorded by the control system, the first coil runs reversely and is removed through the waste taking mechanism;

(5) after the first coil is subjected to the waste taking process, the equipment is operated in the forward direction again, when the head of the first coil reaches the winding shaft, the waste paper butted in the step (2) is removed, the head of the first coil is attached to the winding shaft, then the first coil is wound in the forward direction, and after the first coil completely passes through the detection mechanism, the detection mechanism is started to detect the subsequent second coil;

(6) repeating the step (3), after the tail end paper head of the second coil material roll leaves the unwinding shaft, suspending the operation of the equipment, arranging a third coil material roll on the unwinding shaft, butting the head end paper head of the third coil material roll with the tail end paper head of the second coil material roll, and restarting the equipment to enable the second coil material roll to completely pass through the detection of the detection mechanism;

(7) repeating the step (4), wherein after the tail end paper head of the second coil passes through the detection mechanism, the equipment starts to rotate reversely, and the second coil runs reversely to remove the unqualified products through the waste taking mechanism according to the position of the unqualified products of the second coil recorded by the control system;

(8) repeating the step (5), after the second coil roll finishes the waste taking process, the equipment operates in the forward direction again, when the head of the second coil roll reaches the winding shaft, namely the first coil roll is completely positioned on the winding shaft, the equipment stops operating, the tail end head of the first coil roll is separated from the head of the second coil roll, the first coil roll is unloaded from the winding shaft, then the head of the second coil roll is attached to the winding shaft, forward winding is continued, and after the second coil roll completely passes through the detection mechanism, the detection mechanism is started to detect a subsequent third coil roll;

(9) and (5) repeating the steps (6) to (8), completing the waste winding process of the third coil, completing the detection of the fourth coil, and so on, completing the waste winding process of the Nth coil, and completing the detection of the (N + 1) th coil.

The invention also comprises an infrared alignment sensor which can form a reference line on the unwinding shaft and the winding shaft.

The detection mechanism comprises a detection sensor, a camera, a front surface light source and a back surface light source, wherein the material roll needs to pass through the detection sensor to detect the position of each plate, and then is shot and recorded by the camera.

The advantages of the invention are as follows:

1. the web is comprehensively detected from unreeling to reeling by splicing the waste paper of the first reel and continuously splicing the secondary reels, the displacement is measured and calculated by an encoder, and the position information of the unqualified product can be recorded by shooting by a camera for identification;

2. after the detection is finished, the positioning and reverse reeling waste function is carried out, the unqualified products can be quickly rewound to the unqualified product position, the unqualified products can be taken out, the quick splicing operation is carried out, the reel replacement and the re-reeling waste are not needed, and the product inspection efficiency is improved.

Description of the drawings:

fig. 1 is a schematic view of the structure relating to the present invention.

The specific implementation mode is as follows:

the invention will be further described with reference to the accompanying drawings.

The invention relates to a method for positioning, rewinding and taking waste roll paper, which specifically comprises the following steps:

(1) the set material roll is unfolded from the unwinding shaft, passes through the waste taking mechanism, the traction mechanism, the deviation correcting mechanism and the detection mechanism, and is finally wound by the winding shaft, the traction mechanism is provided with an encoder, and all the mechanisms are controlled by the control system;

(2) splicing a paper head at the starting end of a first coil stock with waste materials, butting waste paper at least at a distance between a detection mechanism and a winding shaft, starting equipment to enable the detection mechanism to detect products of each version width in the coil stock, and recording the position of an unqualified product by a control system;

(3) after the tail end paper head of the first coil leaves the unwinding shaft, the equipment is suspended, the second coil is wound on the unwinding shaft, the head end paper head of the second coil is butted with the tail end paper head of the first coil, and the equipment is restarted, so that the first coil is completely detected by the detection mechanism;

(4) after the tail end paper head of the first coil passes through the detection mechanism, the equipment starts to rotate reversely, namely the winding shaft serves as an unwinding shaft, the unwinding shaft serves as a winding shaft, and according to the position of the unqualified product of the first coil recorded by the control system, the first coil runs reversely and is removed through the waste taking mechanism;

(5) after the first coil is subjected to the waste taking process, the equipment is operated in the forward direction again, when the head of the first coil reaches the winding shaft, the waste paper butted in the step (2) is removed, the head of the first coil is attached to the winding shaft, then the first coil is wound in the forward direction, and after the first coil completely passes through the detection mechanism, the detection mechanism is started to detect the subsequent second coil;

(6) repeating the step (3), after the tail end paper head of the second coil material roll leaves the unwinding shaft, suspending the operation of the equipment, arranging a third coil material roll on the unwinding shaft, butting the head end paper head of the third coil material roll with the tail end paper head of the second coil material roll, and restarting the equipment to enable the second coil material roll to completely pass through the detection of the detection mechanism;

(7) repeating the step (4), wherein after the tail end paper head of the second coil passes through the detection mechanism, the equipment starts to rotate reversely, and the second coil runs reversely to remove the unqualified products through the waste taking mechanism according to the position of the unqualified products of the second coil recorded by the control system;

(8) repeating the step (5), after the second coil roll finishes the waste taking process, the equipment operates in the forward direction again, when the head of the second coil roll reaches the winding shaft, namely the first coil roll is completely positioned on the winding shaft, the equipment stops operating, the tail end head of the first coil roll is separated from the head of the second coil roll, the first coil roll is unloaded from the winding shaft, then the head of the second coil roll is attached to the winding shaft, forward winding is continued, and after the second coil roll completely passes through the detection mechanism, the detection mechanism is started to detect a subsequent third coil roll;

(9) and (5) repeating the steps (6) to (8), completing the waste winding process of the third coil, completing the detection of the fourth coil, and so on, completing the waste winding process of the Nth coil, and completing the detection of the (N + 1) th coil.

The specific equipment implementation of the method for positioning, rewinding and taking waste roll paper is shown in figure 1, the equipment mainly comprises a control system, an unwinding shaft 1, a deviation correcting mechanism, a detection mechanism and a winding shaft 2, a roll material 8 is assembled on the unwinding shaft 1, the roll material 8 is drawn by a drawing mechanism 3, and is wound by the winding shaft 2 after sequentially passing through a first deviation correcting mechanism 4, the detection mechanism and a second deviation correcting mechanism 6, and the detection of unqualified products is completed in the process from unwinding to winding.

The unwinding shaft 1 can be an air expansion shaft or a mechanical shaft, preferably, the air expansion shaft can facilitate feeding, the unwinding shaft 1 and the winding shaft 2 are both provided with corresponding forward and reverse rotating motors, preferably servo motors, and forward winding and reverse winding of the material roll 8 can be realized. The unwinding shaft 1 and the winding shaft 2 should be provided with corresponding tension control mechanisms, so that the tension of the material roll 8 can be detected, signals are transmitted to a control system, the tightness of the material roll 8 is ensured, and the material roll can run uniformly and stably and can be wound neatly.

The invention also comprises an infrared alignment sensor 10 which can form a reference line on the unwinding shaft 1 and the winding shaft 2 and can ensure the consistency of the position when the material roll 8 is fed.

The traction mechanism 3 comprises a traction roller 31 and a compression roller 32, the traction roller 31 is also driven by a forward motor and a reverse motor, the traction mechanism 3 is provided with an encoder (not shown in the figure), the encoder and the traction roller 31 are coaxially arranged, the traction roller 31 is used as the reference speed of the whole mechanism, and the encoder is used as a command mechanism of a camera 52 for acquiring a trigger signal of an image and a product position signal.

The detection mechanism comprises a detection sensor 51, a camera 52, a front light source 53 and a back light source 54, wherein the front light source 53 is positioned above the material conveying part, and a side reflection light source and a bottom transmission light source can be added to the front light source 53, so that the images shot by the camera 52 are uniform; and the reverse light source 54 is positioned below the feeding device, so that the dirt of the bottom paper surface can be detected, and the image shot by the camera 52 can be more uniform. The position of each version is detected at the detection sensor 51, specifically, the starting position and the ending position of each version are identified, the versions can be counted, the encoder can transmit a trigger signal to the camera 52 through the control system, the camera 52 can complete the shooting of images, the control system automatically compares the trigger signal with a sample plate, the defects are searched, and the positions of unqualified products are recorded.

The first deviation correcting mechanism 4 mainly corrects the transverse position of the material roll 8 to ensure that the material roll 8 is stable, the camera 52 is stable in image collection, and the second deviation correcting mechanism 6 mainly ensures that two sides of the material roll 8 are neat when the material roll is rolled.

A waste taking mechanism 7 is arranged between the unreeling shaft 1 and the traction mechanism 3, the waste taking mechanism 7 comprises two groups of pinch rollers 71 which are symmetrically arranged in the front and the back of the material extending direction, two groups of cutting devices 72 which are symmetrically arranged are arranged between the two groups of pinch rollers 71, a waste taking device 73 is arranged below the two groups of cutting devices 72,

specifically, the pinch roller 71 is provided with a motor, and the pinch roller 71 is driven by a cylinder, so that the pinch roller 71 can press the material roll 8 from top to bottom, a fixed roll roller is needed to be matched under the pinch roller 71, the material roll 8 can be clamped tightly, the two groups of pinch rollers 71 press the material roll 8 simultaneously, unqualified products are placed between the two pinch rollers 71, and waste taking is facilitated. The cutting devices 72 are driven by the air cylinders to be pushed out from the side of the material conveying device, and the relative distance between the two groups of cutting devices 72 can be adjusted according to the size of a product. The cutting device 72 consists of two wheels 721 symmetrically arranged at the left and the right and a blade 722 in the middle of the two wheels, and separates two sides of the unqualified product from the material roll 8; the waste removing device 73 may be a negative pressure type manipulator, and the defective products that have been cut and dropped are sucked by a negative pressure suction cup and then taken out from the lower side of the material roll 8.

In order to splice the material roll 8 again after taking waste, the device further comprises a tape driving mechanism 74 positioned below the cutting device 72, the tape driving mechanism 74 can be an air cylinder, when a defective product is taken out, the pressing wheel 71 runs at a low speed through a corresponding motor, so that the material rolls 8 at two ends run towards the middle relatively, the running distance is determined according to the specification and the size of the product, when the two joint ends of the material roll 8 are butted, the tape driving mechanism 74 rises, and a tape is arranged above the tape driving mechanism 74, so that the material rolls 8 at two ends can be jointed. The laminating mode can be laminated by the manual work, perhaps sticky tape actuating mechanism 74 upper surface has negative pressure generator, negative pressure generator one end is equipped with the pneumatic translation mechanism of sticky tape, the other end sets up the sticky tape and cuts the mechanism, two joints laminating on negative pressure generator when material book 8 butt joints, then the sticky tape passes through pneumatic translation mechanism edgewise propelling movement, roll up 8 upper surfaces at material and laminate to rolling up 8, then the sticky tape is cut off the sticky tape to the mechanism, sticky tape pneumatic translation mechanism drives the sticky tape and resets, the completion is to the concatenation of rolling up material 8.

When in work: a coil material 8 is placed on the unreeling shaft 1, the transverse position is adjusted according to the position of an infrared alignment sensor 10, one side of the coil material 8 is aligned with infrared rays, and the coil material is locked after being aligned. The material roll 8 is unfolded according to the unfolding direction, passes through a relevant traction mechanism and a relevant guide roller according to a paper passing route, and finally, the paper head is attached to the winding shaft 2 by using an adhesive tape. Because the detection mechanism is at a certain physical distance from the winding shaft 2, if the unwinding end of the material roll 8 is directly attached to the winding shaft 2, the material roll 8 from the detection mechanism to the winding shaft 2 cannot be detected, so that when the device is just started, the waste material is firstly adopted to be in butt joint with the paper head at the initial end of the first material roll, and at least the waste paper is adopted to be in butt joint at the distance from the detection mechanism to the winding shaft 2, so that the camera 52 can start shooting. When the paper head or the waste paper head is attached to the winding shaft 2, the paper head or the waste paper head still needs to be aligned with the infrared ray, so that the material coil 8 forms a straight line on the unwinding shaft 1 and the winding shaft 2. The machine can be started by setting the tension and the specification and the size of the product through the control system and adjusting the first deviation rectifying mechanism 4 and the second deviation rectifying mechanism 6.

After the machine is started, when paper feeding is smooth, a camera 52 starts to pick images, a detection template and related parameters are set according to the collected images (the image picking and comparison identification belong to the prior art, and are not described in more detail herein), the normal production speed is accelerated, normal detection work is started, a distance measurement and identification of the position of a plate are carried out by an encoder and a detection sensor 51, the encoder and the detection sensor are matched to enable the system to accurately control the camera 52 to accurately shoot each product in place, when unqualified products are detected and compared, the control system can automatically record the position of the unqualified products, the images and the position parameters of the unqualified products appear on a display screen, a manual rechecking process can be added according to needs, namely, a worker can click on the unqualified product images for rechecking, if the unqualified products are confirmed, the images are selected, and if the qualified.

After the material roll 8 is completely detected, the device can be immediately reversed without stopping, the encoder can inform the control system of the position of the unqualified product, the unqualified product is stopped according to the system indication when running to the waste taking mechanism 7, the unqualified product is taken out through the waste taking mechanism, the unqualified product can also be taken out manually, and the device continues to run after splicing until all the unqualified products are taken out completely. The equipment can be rewound forward again, detection is not needed at this time, and the equipment can be directly wound to the winding shaft 2 by forward operation.

When the first coil is about to finish detection, namely the tail end paper head of the first coil leaves the unwinding shaft 1 and does not enter the winding shaft 2, at the moment, the unwinding shaft 1 is in an empty shaft state, the equipment can be immediately suspended from running, the second coil is wound on the unwinding shaft 1, the head end of the second coil is butted with the tail end paper head of the first coil, and then the equipment is continuously started to normally run for detection, so that the first coil can finish full detection, and by analogy, the tail end paper head of the second coil is butted with the head end of the third coil, so that the subsequent coils can continuously finish the full detection process.

Because the beginning end paper head of the first coil is connected with the waste paper to realize full detection, the span of the waste paper is actually spliced from the waste taking mechanism 7 to the winding shaft 2, so that the beginning end paper head of the first coil can be in a waste taking range when the waste paper is positioned and rewound. Get after useless, first coil of material needs forward rewinding, then can the top of first coil of material be about to contact when receiving winding shaft 2, get the waste paper of concatenation, then laminate the top stub of first coil of material with winding shaft 2, can avoid first coil of material to mix waste paper like this, and then follow-up second coil of material, third coil of material realize full detection process owing to adopt the mode that lasts the butt joint, consequently need not to splice waste paper again and get the operation of waste paper.

First coil of material is rolled up the concatenation department with the waste material to and the concatenation department of two follow-up coil of material, and the accessible encoder calculates the length of paper feed, also can establish through detecting sensor 51 to the concatenation department and distinguish, all can make control system obtain corresponding data and feed back to the operator, and the operator can know when need to continue to roll up the concatenation, when need get the waste paper that first coil of material top is connected.

It is to be understood that the technical scope of the present invention is not limited to the contents of the specification, and that modifications or changes may be made by those skilled in the art based on the above description, and all such modifications and changes are intended to fall within the scope of the appended claims.