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US-12623873-B2 - Double-sheet detection device

US12623873B2US 12623873 B2US12623873 B2US 12623873B2US-12623873-B2

Abstract

The present disclosure relates to the technical field of double-sheet detection, and discloses a double-sheet detection device. The double-sheet detection device includes a paper feeding machine body, wherein a main body plate is arranged on an outer side of the paper feeding machine body; a detection mechanism is arranged on an inner side of the main body plate; the paper feeding machine body is provided with a storage assembly; the detection mechanism includes a U-shaped plate; and the U-shaped plate is arranged on the inner side of the main body plate. When a detection wheel rolls on the paper feeding machine body, after a piece of paper passes, a moving distance of the detection wheel on the paper is matched with a thickness of the paper, so as to determine the number of pieces of paper and achieve the purpose of double-sheet detection.

Inventors

  • Qingxin Zhong
  • Wenjian Tang
  • Feifei YU

Assignees

  • Guangzhou Baiyi intelligent equipment Co., LTD

Dates

Publication Date
20260512
Application Date
20240614
Priority Date
20240412

Claims (8)

  1. 1 . A double-sheet detection device, comprising a paper feeding machine body ( 1 ), wherein a main body plate ( 2 ) is arranged on an outer side of the paper feeding machine body ( 1 ); a detection mechanism ( 3 ) is arranged on an inner side of the main body plate ( 2 ); the paper feeding machine body ( 1 ) is provided with a storage assembly ( 4 ); the detection mechanism ( 3 ) comprises a U-shaped plate ( 31 ); the U-shaped plate ( 31 ) is arranged on the inner side of the main body plate ( 2 ); an inner side top of the U-shaped plate ( 31 ) is fixedly connected with a first damper ( 32 ); a bottom of the first damper ( 32 ) is fixedly connected with a detection wheel ( 33 ); an angle sensor ( 374 ) is mounted on the detection wheel ( 33 ); a first spring ( 34 ) is fixedly connected to an exterior of the first damper ( 32 ); a top and bottom of the first spring ( 34 ) are fixedly connected with the inner side top of the U-shaped plate ( 31 ) and a top of the detection wheel ( 33 ), respectively; a rear side of the U-shaped plate ( 31 ) is fixedly connected with a transverse plate ( 35 ); a movement slot ( 36 ) is formed in the transverse plate ( 35 ); an interior of the movement slot ( 36 ) is connected with a movable block ( 37 ); the movable block ( 37 ) penetrates through the movement slot ( 36 ); a bottom of the movable block ( 37 ) is fixedly connected with a first electric telescopic rod ( 38 ); a bottom of the first electric telescopic rod ( 38 ) is fixedly connected with an auxiliary plate ( 39 ); a bottom of the auxiliary plate ( 39 ) is fixedly connected with a circular tube ( 391 ); and a bottom of the circular tube ( 391 ) is fixedly connected with a suction cup ( 392 ); wherein the angle sensor ( 374 ) is coaxially connected to the detection wheel ( 33 ); when a material passes, the angle sensor ( 374 ) is driven by a rotating shaft; real-time data of the angle sensor ( 374 ) is obtained by high-speed communication with the angle sensor ( 374 ); and an actual thickness value of the material is calculated through an algorithm.
  2. 2 . The double-sheet detection device according to claim 1 , wherein a top of the transverse plate ( 35 ) is fixedly connected with a small air pump ( 393 ); an output end of the small air pump ( 393 ) is fixedly connected with an exhaust pipe ( 394 ); the exhaust pipe ( 394 ) penetrates through the auxiliary plate ( 39 ); and the exhaust pipe ( 394 ) extends into the circular tube ( 391 ) and is fixedly connected to the circular tube ( 391 ).
  3. 3 . The double-sheet detection device according to claim 1 , wherein a top of the transverse plate ( 35 ) is fixedly connected with a connecting plate; one side of the connecting plate is fixedly connected with a second electric telescopic rod ( 395 ); and one end of the second electric telescopic rod ( 395 ) is fixedly connected to one side of the movable block ( 37 ).
  4. 4 . The double-sheet detection device according to claim 1 , wherein a bottom of the U-shaped plate ( 31 ) is fixedly connected with a platform plate ( 396 ); a through slot is formed in the platform plate ( 396 ); and the first spring ( 34 ) and the first damper ( 32 ) both penetrate through the through slot.
  5. 5 . The double-sheet detection device according to claim 1 , wherein the calculated actual thickness value is compared with a double-sheet material detection threshold; if the actual thickness value exceeds the double-sheet material detection threshold, a double-sheet signal is immediately sent, which achieves a purpose of double-sheet detection, so that in addition to a mode of detection by manual visual inspection of scales, automatic detection is achieved synchronously; and the double-sheet detection via two modes greatly improves the flexibility and accuracy.
  6. 6 . The double-sheet detection device according to claim 5 , wherein in a detection process, the algorithm is implemented in two modes; in early application, a programmable logic controller (PLC) is used to communicate with the angle sensor ( 374 ) at a high speed to obtain data of the angle sensor ( 374 ), and the data is converted into an angle value; The calculated angle value is subtracted by an angle value at an initial position to obtain an angle value of actual swinging; and in a case that a size of the detection wheel ( 33 ) is known, an actual offset of a pressing wheel is obtained by a trigonometric function operation, thus obtaining an actual thickness of the material.
  7. 7 . The double-sheet detection device according to claim 6 , wherein when the PLC has a large number of programs, the operating efficiency is slightly affected; a (33)-bit high-speed single-chip microcomputer is used to transplant the communication and the algorithm to a specially developed single-chip microcomputer; and the single-chip microcomputer directly outputs a result.
  8. 8 . The double-sheet detection device according to claim 1 , wherein the detection mechanism ( 3 ) comprises a push-pull assembly; the push-pull assembly comprises two square plates ( 389 ); the two square plates ( 389 ) are fixedly connected to the inner side top of the main body plate ( 2 ); a rear side of one square plate ( 389 ) is fixedly connected with a motor ( 371 ); the motor ( 371 ) is fixedly connected to a switch ( 385 ); the motor ( 371 ) is fixedly connected with a threaded rotating rod ( 372 ) through an output shaft; the threaded rotating rod ( 372 ) penetrates through one of the square plates ( 389 ), and the threaded rotating rod ( 372 ) is rotatably connected to the two square plates ( 389 ) respectively; the top of the U-shaped plate ( 31 ) is fixedly connected with a linkage plate ( 373 ); the threaded rotating rod ( 372 ) penetrates through the linkage plate ( 373 ) and is in threaded connection with the linkage plate ( 373 ); the storage assembly ( 4 ) comprises a bearing plate ( 41 ); the bearing plate ( 41 ) is fixedly connected to the paper feeding machine body ( 1 ); a placement frame ( 42 ) is placed at a top of the bearing plate ( 41 ); the top of the bearing plate ( 41 ) is fixedly connected with two positioning plates ( 43 ); clamping slots are formed in the positioning plates ( 43 ); the placement frame ( 42 ) is fixedly connected with a rectangular plate ( 44 ); two grooves are formed in the rectangular plate ( 44 ); interiors of the grooves are slidably connected with clamping blocks ( 45 ); the clamping blocks ( 45 ) extend out of the rectangular plate ( 44 ); the two positioning plates ( 43 ) are respectively arranged on two sides of the rectangular plate ( 44 ); the positioning plates ( 43 ) are in contact with the rectangular plate ( 44 ); the clamping blocks ( 45 ) penetrate through the clamping slots and are matched with the clamping slots; one side of each clamping block ( 45 ) is fixedly connected with an auxiliary spring ( 46 ); and the auxiliary springs ( 46 ) are fixedly connected into the grooves.

Description

TECHNICAL FIELD The present application relates to the technical field of double-sheet detection, and in particular, to a double-sheet detection device. BACKGROUND Double-sheet detection is generally applied to production of automobile parts, stamping, bending, and cutting procedures of metal components of household appliances such as a refrigerator, a washing machine, and a rice cooker, high-speed stamping of metal covers, stamping of other hardware accessories, and the like. In these production processes, double-sheet overlapping during automatic feeding needs to be prevented. In addition to the application to the above fields, to avoid such a situation that waste products appear in post processing and the processing quality is affected because two or more pieces of paper may not be found out in time, production and detection control instruments for preventing and controlling overlapping of two metal plates in mechanical equipment of metal pot packaging industries, such as a tin-plate printing press, a coating machine, a cutting machine, a punching machine, a cover press, a manipulator, and a pot body resistance welding machine, may often be provided with a double-sheet detection device for paper detection during paper processing and conveying. Patent No. CN211569516U discloses a convenient-to-adjust double-sheet detection device for a paper feeding machine, including an assembling plate (on which a paper pressing wheel is mounted), a fixed plate, a connecting plate, an adjustment mechanism, and a cross roller guide rail. The fixed plate is provided with a through hole and a nut hole which are mutually orthogonal. An upper end of the assembling plate is fixedly connected to the connecting plate; a through hole is formed in the connecting plate; the adjustment mechanism includes a fine adjustment handle, a screw rod, a positioning nut, and a limiting assembly that limits the connecting plate on the screw rod; the positioning nut is mounted and clamped in the nut hole; an upper end of the screw rod is fixed to the fine-adjustment handle, and a lower end penetrates through the through hole and can rotatably pass through the through hole of the connecting plate and the positioning nut; the cross roller guide rail includes a mother guide rail and a child guide rail that are mutually matched with each other; the mother guide rail is fixedly connected to the assembling plate; and the child guide rail is fixedly connected to the fixed plate. The adjustment is very convenient. A distance between the paper pressing wheel and a paper feeding roller can be effectively adjusted by only rotating the fine adjustment handle. Although the distance between the paper pressing wheel and the paper feeding roller can be flexibly adjusted according to thicknesses of different pieces of paper during feeding of the paper for detection, in an actual detection process, the above devices cannot take out the overlapping paper once there is paper overlapping, so that after a paper overlapping situation has been detected, the paper still needs to be taken out manually. This is troublesome. SUMMARY In order to solve the above problems, the present disclosure provides a double-sheet detection device. The double-sheet detection device provided by the present application adopts the following technical solutions: A double-sheet detection device includes a paper feeding machine body, wherein a main body plate is arranged on an outer side of the paper feeding machine body; a detection mechanism is arranged on an inner side of the main body plate; the paper feeding machine body is provided with a storage assembly;the detection mechanism includes a U-shaped plate; the U-shaped plate is arranged on the inner side of the main body plate; an inner side top of the U-shaped plate is fixedly connected with a first damper; a bottom of the first damper is fixedly connected with a detection wheel; an angle sensor is mounted on the detection wheel; a first spring is fixedly connected to an exterior of the first damper; a top and bottom of the first spring are fixedly connected with the inner side top of the U-shaped plate and a top of the detection wheel, respectively; a rear side of the U-shaped plate is fixedly connected with a transverse plate; a movement slot is formed in the transverse plate; an interior of the movement slot is connected with a movable block; the movable block penetrates through the movement slot; a bottom of the movable block is fixedly connected with a first electric telescopic rod; a bottom of the first electric telescopic rod is fixedly connected with an auxiliary plate; a bottom of the auxiliary plate is fixedly connected with a circular tube; and a bottom of the circular tube is fixedly connected with a suction cup. By the adoption of the above technical solution, in a process of feeding paper on the paper feeding machine body, the main body plate is pushed to the outer side of the paper feeding machine body; when the detectio