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CN-122007034-A - Automatic paper tube removing method and device with connector

CN122007034ACN 122007034 ACN122007034 ACN 122007034ACN-122007034-A

Abstract

The invention discloses an automatic paper tube rejecting method and device with joints, which comprises the steps of pasting a marking tape containing metal components at joints of base paper sheets in a production stage of a blank tube, enabling the joint positions to have metal characteristics, cutting the produced blank tube into fixed-length paper tubes, conveying the fixed-length paper tubes to a detection station, scanning the paper tubes on a conveying line one by using a metal detector, judging that the paper tubes are defective products containing joints when the metal detector detects that metal signals exist in the paper tubes, sending control signals to a rejecting actuator, and removing the defective paper tubes from the conveying line by the rejecting actuator, so that qualified paper tubes without the metal signals are reserved. According to the invention, by embedding the metal mark at the joint and combining the high-sensitivity metal detection technology, the non-contact, high-precision and automatic identification and rejection of the joint paper tube are realized, the problems of low efficiency and high omission factor of the traditional manual visual inspection are effectively solved, and the quality consistency of the finished paper tube is obviously improved.

Inventors

  • CHEN XIAOYING
  • WANG CHAO
  • GAO DONGLIANG
  • ZHOU FENG

Assignees

  • 桐乡恒益纸塑有限公司

Dates

Publication Date
20260512
Application Date
20260320

Claims (10)

  1. 1. The automatic paper tube removing method with the connector is characterized by comprising the following steps of: S1, marking implantation, namely when capillary base paper is subjected to lengthening operation, a marking material containing a metal component is stuck or compounded at a lap joint of two base paper sheets, so that a joint area has a metal characteristic which can be identified by metal detection equipment; S2, forming and conveying, namely rolling and forming the base paper treated in the step S1, cutting according to the required length to form a capillary, conveying the dried capillary after baking to a post fine cutting section, cutting according to the required length to form independent paper tube units, and conveying the paper tube units one by one along a preset path through a conveying device; S3, metal detection, namely arranging a metal detector (21) on the conveying path, and monitoring whether a metal signal exists in the paper tube in real time by the metal detector (21) when the paper tube unit passes through a detection area of the metal detector (21); S4, judging the signal, namely judging the current paper tube unit as a defective product containing a joint by a control system if the metal detector (21) detects that the metal signal intensity exceeds a preset threshold value, and judging the paper tube unit as a qualified product if the metal signal is not detected or the signal intensity is lower than the threshold value; And S5, automatic rejection, namely, a rejection execution mechanism (9) is further arranged on the conveying path, when the paper tube unit is judged to be defective, the control system immediately triggers the rejection execution mechanism (9) to start, the current defective paper tube which just enters the rejection range of the rejection execution mechanism (9) is removed from the conveying path, and the qualified paper tube continues to flow to the next working procedure or collecting area along with the conveying device.
  2. 2. The method for automatically rejecting paper tubes with joints according to claim 1, wherein the marking material containing metal components in the step S1 is aluminum foil tape, metal film coated tape or composite tape with metal wires/metal sheets embedded on a common adhesive tape, the width of the marking material covers the lap joint area of the joint of the base paper and the length is enough to ensure that any section of paper tube containing joints after cutting remains the metal mark.
  3. 3. The automatic paper tube removing method with the connector of claim 1, wherein the conveying device is further provided with a limiting mechanism, and the cut paper tube units are conveyed to the direction of the metal detector (21) after being corrected and reset one by one through the paper tube limiting mechanism.
  4. 4. The method for automatically rejecting paper tubes with joints according to claim 1, wherein in the step S3, the metal detector (21) is of a perforated penetrating structure, and the conveying area of the conveying device penetrates through a through hole in the metal detector (21).
  5. 5. The method for automatically rejecting paper tubes with joints according to claim 1, wherein in the step S5, the reject executive mechanism (9) is in linkage control with the metal detector (21) through a PLC (22), the delay time is calculated on the speed of the conveyor belt and the distance between the two through the PLC (22), and when the defective paper tubes reach the reject range of the reject executive mechanism (9), the defective paper tubes are rejected out of the current conveying device through the reject executive mechanism (9).
  6. 6. An automatic paper tube removing device for a method according to claims 1-5 is characterized by comprising a first conveying device (6), a second conveying device (3), a metal detection mechanism (2) and a removing execution mechanism (9), wherein the first conveying device (6) is used for overturning paper tube units which roll down transversely after being cut by a post-finishing cutting section to form longitudinal placement and conveying the paper tube units forward one by one, the second conveying device (3) is in butt joint with a discharge end of the first conveying device (6), the metal detection mechanism (2) and the removing execution mechanism (9) are sequentially arranged on the second conveying device (3), the removing execution mechanism (9) is controlled by the metal detection mechanism (2), and the paper tube units which roll down onto the first conveying device (6) after being cut are overturned and then sequentially conveyed onto the second conveying device (3) to judge and remove defective paper tubes.
  7. 7. The automatic paper tube removing device with the connector of claim 6, wherein the first conveying device (6) comprises a first frame (61), a first conveying belt (63) arranged on the first frame (61) and driven by a motor, limiting mechanisms (62) arranged on two sides of the first conveying belt (63), and a turnover mechanism (64) arranged on the first frame (61), and paper tube units in a transverse state on the first conveying belt (63) are turned through the turnover mechanism (64) to form a longitudinal structure with a vertical axis and then conveyed forwards.
  8. 8. The automatic paper tube removing device with the connector as claimed in claim 6, wherein the second conveying device (3) comprises a second frame (33), a second conveying belt (31) arranged on the second frame (33) and driven by a motor, and limit baffles (32) arranged on two sides of the second conveying belt (31).
  9. 9. The automatic paper tube removing device with the connector as claimed in claim 8, wherein the metal detection mechanism (2) comprises a metal detector (21) arranged on the second frame (33), and a PLC (22) arranged on one side of the metal detector (21), and the second conveying belt (31) passes through the metal detector (21).
  10. 10. The automatic paper tube removing device with the connector as claimed in claim 6, wherein the removing executing mechanism (9) comprises one or more of a pneumatic push rod, a mechanical shifting fork, a turnover baffle plate or a high-pressure air flow nozzle.

Description

Automatic paper tube removing method and device with connector Technical Field The invention relates to the technical field of paper tube removing methods, in particular to an automatic paper tube removing method and device with a connector. Background The paper tube is formed by compounding multiple layers of paper, and in the production process of the paper tube capillary, two layers of paper are adhered and spliced by the double-sided tape at the joint of two rolls of paper, so that fine deviation and uneven strength can occur in the pipe diameter of the finished paper tube with the joint in the paper tube after being cut and molded through a post fine cutting section. Most joints are positioned inside the paper tube, when the joints are positioned at the deeper parts of the paper tube, the processes of winding, drying and the like in the forming process are combined, and the effects on the circular arc degree and the surface flatness of the paper tube are smaller by combining the combination of the outer side multi-layer conventional paper, but the effects on the circular arc degree and the flatness of the surface of the paper tube are larger as the joints are closer to the outer side. And the strength of the paper tube is fluctuated at the joint during radial winding, which is easy to cause uneven stress and deformation of the paper tube. At present, when the finished paper tube with the joint is removed, the joint of the base paper near the outer side is usually observed by naked eyes and marked in advance, the joint can be directly found by naked eyes due to obvious bulges on the surface, and the joint can not be detected by naked eyes, and only the paper tube can be distinguished by manually marking marks in the process of winding and forming in advance, and the joint is subjected to rechecking after being cut. The method has the advantages of high labor intensity, low efficiency, high omission ratio and the like, and is influenced by the fatigue degree and the attention of workers. And along with the progress of bonding technology, certain joints are made to be very smooth and hidden, and especially for the joint paper tube close to the inner side, the paper tube appearance and the qualified product difference are very small, and the manual work in the follow-up finish cutting section is difficult to quickly and accurately distinguish, and the unqualified joint paper tube is easy to mix into the qualified product, so that the influence is caused to the follow-up procedure. Meanwhile, the existing automatic detection equipment is mainly used for measuring the outer diameter, length or inner wall of a paper tube, and the special defect of 'joint' is overcome, so that the low-cost and high-efficiency automatic rejection scheme is few, and particularly under the trend that the quality requirements of the spinning industry on the flatness, strength stability and the like of the paper tube are higher and higher, a method and equipment capable of automatically identifying and rejecting the paper tube with the joint on the basis of the existing technology are needed, and the technical problem to be solved in the paper tube industry is solved. Disclosure of Invention In order to solve certain or some technical problems in the prior art, one of the purposes of the application is to provide an automatic paper tube removing method with joints, which is characterized in that a metal mark is implanted in a source, and a metal detection technology is utilized to realize the rapid, accurate and automatic removal of the joint paper tube. The second purpose of the application is to provide a joint paper tube removing device, which effectively avoids the problem of missed detection of joint paper tubes, so that each paper tube can be subjected to uniform movement detection and can be accurately and effectively removed. In order to solve the above existing technical problems, one of the purposes of the present application is achieved by adopting the following technical scheme: The automatic paper tube removing method with the connector is characterized by comprising the following steps of: S1, marking implantation, namely when capillary base paper is subjected to lengthening operation, a marking material containing a metal component is stuck or compounded at a lap joint of two base paper sheets, so that a joint area has a metal characteristic which can be identified by metal detection equipment; S2, forming and conveying, namely rolling and forming the base paper treated in the step S1, cutting according to the required length to form a capillary, conveying the dried capillary after baking to a post fine cutting section, cutting according to the required length to form independent paper tube units, and conveying the paper tube units one by one along a preset path through a conveying device; S3, metal detection, namely arranging a metal detector on the conveying path, and monitoring whether a metal signal exists in the