Detection device for preventing double printed sheets

Abstract

The utility model discloses a detection device for preventing double printed sheets, which relates to the technical field of printing equipment and comprises a conveyor belt arranged on a detection table. The fixing assembly is used for fixing paper and comprises a through hole and a moving pipe, the through hole is formed in the conveying belt, and the moving pipe is fixedly connected to the interior of the through hole; the control assembly is used for being matched with the fixed assembly and comprises a pump body and a fixed pipe, the fixed pipe communicates with the air inlet end of the pump body, and the fixed pipe is in butt joint fit with the movable pipe; and the monitoring assembly comprises ultrasonic double-sheet detection equipment, the ultrasonic double-sheet detection equipment is arranged above the conveying belt, and an electromagnetic valve is installed on the moving pipe. According to the detection device for preventing double printed sheets, the fixing assembly, the control assembly and other structures are arranged, paper is adsorbed and fixed, indentations cannot be generated in the adsorption fixing mode, the printing quality is guaranteed, and the use efficiency of the detection device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing equipment technical field, especially a kind of detection device for preventing printing double. BACKGROUND

[0002] In the working process of printing machine, paper needs to detect the thickness of paper when passing through paper feeding platform, and the detection method is mainly mechanical, with low detection accuracy. When the paper is thin, the quality problem is caused due to undetected.

[0003] A kind of ultrasonic wave double detection device is disclosed in the patent with the name of ultrasonic wave double detection device (patent application number CN201820580473.7), which detects the thickness of paper by ultrasonic wave double detection sensor, achieves the purpose of double control, when double signal is transmitted to ultrasonic wave detection controller, ultrasonic wave detection controller controls the delay of paper feeding mechanism, and gives the operation gap of printing staff on line to take out double paper, but in actual use, the device cannot limit and fix the paper, when there is wind, paper is easy to appear floating and chaos, which affects the detection effect.

[0004] Therefore, it is necessary to provide a detection device for preventing printing double to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a detection device for preventing printing double to solve the problem that the device cannot limit and fix the paper in actual use, paper is easy to appear floating and chaos when there is wind, which affects the detection effect.

[0006] To achieve the above object, the utility model provides the following technical scheme: a detection device for preventing printing double, comprising a conveyor belt arranged on a detection table;

[0007] A fixing assembly is used for fixing paper, comprising a through hole and a moving pipe, the through hole is arranged on the conveyor belt, and the moving pipe is fixedly connected to the inside of the through hole.

[0008] A control assembly is used for cooperating with the fixing assembly, comprising a pump body and a fixed pipe, the fixed pipe is communicated with the air inlet end of the pump body, and the fixed pipe is in butt joint with the moving pipe.

[0009] A monitoring assembly comprises an ultrasonic wave double detection device, which is arranged above the conveyor belt.

[0010] Preferably, the moving pipe is provided with an electromagnetic valve.

[0011] Preferably, the fixing assembly is provided with multiple groups, and the multiple groups of fixing assemblies are evenly distributed.

[0012] Preferably, a fixing plate is fixedly connected to the detection table, and the pump body is fixedly connected to the fixing plate.

[0013] Preferably, a rubber ring is arranged at the end of the fixed pipe away from the pump body.

[0014] Preferably, an elastic strip is fixedly connected to the inner wall of the moving pipe.

[0015] Preferably, rotating rollers are arranged at both ends of the detection table, the two rotating rollers are drivingly connected through a conveying belt, a motor is fixedly connected to the detection table, one of the rotating rollers is fixedly connected to the driving shaft of the motor, and the rotating roller comprises a thin section and thick sections, and two thick sections are arranged at both sides of the thin section.

[0016] Preferably, a paper stacking platform is arranged on the detection table, and a paper feeding mechanism is arranged on the paper stacking platform.

[0017] The technical effects and advantages of the present application are as follows:

[0018] 1. The fixing assembly and the control assembly are arranged to adsorb and fix the paper, and the adsorption and fixation will not cause indentation, thereby ensuring the printing quality and improving the use efficiency of the detection device.

[0019] 2. When the paper is released, the elastic strip is swung upward and reset under the action of the automatic reset elastic force, a certain airflow is generated, and the paper is separated from the conveying belt. DRAWINGS

[0020] Figure 1 Another view of the detection device for preventing double printing of the present application is shown in the structure schematic view.

[0021] Figure 2 Another view of the detection device for preventing double printing of the present application is shown in the structure schematic view.

[0022] Figure 3 The structure of the detection device for preventing double printing of the present application is shown in the structure schematic view. Figure 2 The structure of the detection device for preventing double printing of the present application is shown in the structure schematic view.

[0023] Figure 4 The structure of the detection device for preventing double printing of the present application is shown in the structure schematic view.

[0024] Figure 5 The structure of the detection device for preventing double printing of the present application is shown in the structure schematic view. Figure 4 The structure of the detection device for preventing double printing of the present application is shown in the structure schematic view.

[0025] In the figure: 1, detection platform; 2, conveying belt; 3, through hole; 4, moving pipe; 5, electromagnetic valve; 6, fixed plate; 7, pump body; 8, fixed pipe; 9, rotating roller; 901, thin section; 902, thick section; 10, motor; 11, fixed frame; 12, ultrasonic double sheet detection equipment; 13, paper stacking platform; 14, paper feeding mechanism; 15, elastic strip; 16, rubber ring. DETAILED DESCRIPTION

[0026] The utility model provides a kind of detection device for preventing printing double, as shown in Figures 1-5 It includes detection platform 1, detection platform 1 is provided with conveying belt 2, the both ends of detection platform 1 are rotatably provided with rotating roller 9, two rotating rollers 9 are drivenly connected by conveying belt 2, motor 10 is fixedly connected on detection platform 1, and one of rotating roller 9 is fixedly connected on the driving shaft of motor 10.Specific use, motor 10 drives rotating roller 9 fixedly connected with its driving shaft to rotate, and conveying belt 2 is rotated under the cooperation of another rotating roller 9, realizes the conveying of paper, and motor 10 is externally connected with the power supply of factory.

[0027] Fixed frame 11 is fixedly connected on detection platform 1, and fixed frame 11 is inverted L-shaped, monitoring assembly is provided on fixed frame 11, and monitoring assembly includes ultrasonic double sheet detection equipment 12, ultrasonic double sheet detection equipment 12 is arranged above conveying belt 2, and ultrasonic double sheet detection equipment 12 is fixedly installed on the lower surface of the top of fixed frame 11.

[0028] Ultrasonic double sheet detection equipment 12 includes ultrasonic transmitter and ultrasonic receiver and other structures, the time between the square wave of high-voltage pulse signal generated by ultrasonic transmitter and the square wave signal of ultrasonic receiver is measured, compared with the time reference value stored under normal single condition, according to the comparison result, it is indicated as single layer or double layer, and ultrasonic double sheet detection equipment 12 is prior art, which will not be described here.

[0029] When paper is moved to fixed frame 11, ultrasonic double sheet detection equipment 12 detects paper, and if double or other conditions occur, it can be taken out by operator or mechanical arm, to prevent printing double.

[0030] When there is wind, paper is easy to move and disorder, which affects detection effect, to improve detection effect, fixed assembly is arranged on conveying belt 2, fixed assembly is arranged in multiple groups, multiple groups of fixed assembly are evenly distributed, and fixed assembly includes through hole 3 and moving pipe 4, through hole 3 is arranged on conveying belt 2, moving pipe 4 is fixedly connected in through hole 3, and electromagnetic valve 5 is installed on moving pipe 4.

[0031] The fixed plate 6 is fixedly connected to the detection table 1, and a control assembly is arranged on the fixed plate 6, wherein the control assembly comprises a pump body 7 and a fixed pipe 8, the pump body 7 is fixedly connected to the fixed plate 6, the fixed pipe 8 is communicated to the air inlet end of the pump body 7, the fixed pipe 8 is in abutting cooperation with the moving pipe 4, and the control assembly is arranged at a feeding station of the detection device; and the fixed pipe 8 and the moving pipe 4 are made of hard materials, such as stainless steel.

[0032] The end, away from the pump body 7, of the fixed pipe 8 is provided with a rubber ring 16, so as to improve the sealing performance of the abutting cooperation between the fixed pipe 8 and the moving pipe 4 and reduce the abrasion.

[0033] At the feeding station, the paper is placed on the conveying belt 2 and covers the top of the corresponding moving pipe 4, the bottom end of the moving pipe 4 is in abutting cooperation with and communicated to the top end of the fixed pipe 8, the electromagnetic valve 5 on the moving pipe 4 is opened, the pump body 7 is started, the paper is adsorbed by the fixed pipe 8 and the moving pipe 4, then the electromagnetic valve 5 is closed, so that the paper is kept in a fixed state for conveying; and the adsorption and fixing mode will not cause indentation and prevent the printing quality.

[0034] The suction force of the pump body 7 is appropriate and will not cause damage to the paper; in specific use, a pressure sensor can be arranged to detect the suction force; the paper can also be pressed on the conveying belt 2 by an operator or a mechanical arm to assist in adsorption and fixing, which can be adjusted according to specific use; meanwhile, the device is especially suitable for paper with appropriate thickness and will not be broken at will.

[0035] In actual use, a sealing ring can also be arranged at the end, close to the conveying belt 2, of the moving pipe 4 to improve the sealing performance of adsorption and fixing.

[0036] Then, the conveying belt 2 rotates to convey the paper, and the fixed pipe 8 cooperates with the next group of moving pipes 4.

[0037] When reaching the end, away from the feeding station, of the conveying belt 2, the electromagnetic valve 5 is opened, external gas enters the inside of the moving pipe 4, and the fixing of the paper is released.

[0038] The fixed assembly and the control assembly are arranged to adsorb and fix the paper, the adsorption and fixing mode will not cause indentation, the printing quality is ensured, and the use efficiency of the detection device is improved.

[0039] The rotating roller 9 comprises a thin section 901 and two thick sections 902, the two thick sections 902 are arranged at the two sides of the thin section 901 respectively, and the moving pipe 4 and the like structures correspond to the thin section 901, so as not to affect the movement of the moving pipe 4 and the like structures driven by the conveying belt 2; and a power supply device can be arranged on the conveying belt 2 to supply power for the electromagnetic valve 5, and the power supply device comprises a storage battery and the like structure.

[0040] The inner wall of the moving tube 4 is fixedly connected with elastic strips 15. When the paper is adsorbed by the fixed tube 8 and the moving tube 4, the elastic strips 15 swing downward under the suction force; when the paper is released, the elastic strips 15 swing upward and reset under the action of the automatic reset elastic force, to generate a certain air flow, to assist the paper to separate from the conveying belt 2.

[0041] The detection table 1 is provided with a paper stacking platform 13, and the paper to be detected is stacked on the paper stacking platform 13. The paper stacking platform 13 is provided with a paper feeding mechanism 14, which includes a transmission roller, a paper feeding roller and other structures, and is used to move the paper to the conveying belt 2. The paper feeding mechanism 14 is a common technology and will not be described here.

Claims

1. A device for preventing detection of a printed double, characterized by: Including the conveyer belt (2) set on the detection platform (1); The fixed assembly for fixing paper includes a through hole (3) and a moving pipe (4), the through hole (3) is opened on the conveyer belt (2), and the moving pipe (4) is fixedly connected in the through hole (3); The control assembly for cooperating with the fixed assembly includes a pump body (7) and a fixed pipe (8), the fixed pipe (8) is communicated on the air inlet end of the pump body (7), and the fixed pipe (8) is in butt joint with the moving pipe (4); The monitoring assembly includes an ultrasonic double sheet detection device (12), and the ultrasonic double sheet detection device (12) is arranged above the conveyer belt (2).

2. A device for detecting misprinted doubles according to claim 1, wherein: The moving pipe (4) is provided with an electromagnetic valve (5).

3. The apparatus according to claim 1, wherein: The fixed assembly is provided with multiple groups, and the multiple groups of fixed assemblies are uniformly distributed.

4. The apparatus of claim 1 wherein: The detection platform (1) is fixedly connected with a fixed plate (6), and the pump body (7) is fixedly connected to the fixed plate (6).

5. The apparatus of claim 1 wherein: the first and second sensors are positioned to detect the presence of a printed double. The fixed pipe (8) is provided with a rubber ring (16) away from the pump body (7).

6. The apparatus of claim 1 wherein: The inner wall of the moving pipe (4) is fixedly connected with an elastic strip (15).

7. The apparatus of claim 1 wherein: the first and second sensors are positioned to detect the presence of a printed double. Both ends of the detection platform (1) are rotatably provided with rotating rollers (9), the two rotating rollers (9) are drivingly connected through the conveyer belt (2), the detection platform (1) is fixedly connected with a motor (10), one of the rotating rollers (9) is fixedly connected to the driving shaft of the motor (10), and the rotating roller (9) includes a thin section (901) and a thick section (902), two thick sections (902) are arranged on the two sides of the thin section (901).

8. The apparatus of claim 1 wherein: the sensor is a photoelectric sensor. The detection platform (1) is provided with a paper stacking platform (13), and the paper stacking platform (13) is provided with a paper feeding mechanism (14).

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