Printed matter code spraying detection device

Abstract

The utility model relates to the technical field of printed matter detection equipment, in particular to a printed matter code spraying detection device. The printed matter code spraying detection device is sequentially provided with a double-station feeding mechanism, a pre-acceleration mechanism, a deviation rectifying mechanism, a code spraying detection mechanism, a waste removing mechanism, a speed reduction transmission mechanism and a vertical material receiving mechanism along a product advancing route. The code spraying detection mechanism comprises a detection rack, a detection conveying belt for conveying products is installed on the detection rack, a code spraying device, a UV lamp and a camera are sequentially arranged above the detection conveying belt along the advancing route of the products, and the code spraying device, the UV lamp and the camera are installed on the detection rack through cross beams. According to the utility model, the printed matter is subjected to code spraying and photographing detection, so that the defect detection efficiency is high, the labor is saved, and the product quality can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing product detection equipment technical field especially a printing product code spraying detection device. BACKGROUND

[0002] With the development of computer science, machine vision technology as a new quality control method, plays an increasingly important role in the printing and packaging industry. Offline printing defect detection system adopts machine vision as the core technology, and carries out defect detection on the single sheet inspection machine, which can effectively detect the packaging products with printing defects, and has important significance for guiding the first few production processes of the printing products.

[0003] Under the current environment, printing products need to trace the information of each packaging product, therefore, the demand for code spraying on the surface of printing products is increasing, and therefore a device integrating code spraying and detection is needed, which can detect code defects after code spraying on the printing products. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problems that the utility model provides a printing product code spraying detection device, which overcomes the defects of the prior art, has high defect detection efficiency, saves labor, and improves product quality.

[0005] The utility model solves the technical problems by adopting the following technical scheme: a printing product code spraying detection device is provided, which is sequentially provided with a double-station feeding mechanism, a pre-acceleration mechanism, a deviation rectifying mechanism, a code spraying detection mechanism, a rejection mechanism, a deceleration transmission mechanism and a vertical material collecting mechanism along a product running route.

[0006] The code spraying detection mechanism comprises a detection rack, a detection transmission belt for conveying products is installed on the detection rack, a code sprayer, a UV lamp and a camera are sequentially provided above the detection transmission belt along the product running route, and the code sprayer, the UV lamp and the camera are respectively installed on the detection rack through a cross beam.

[0007] The transmission belt is an air suction belt, and detection compression wheel assemblies for preventing product edge lifting are respectively installed at the feeding end and the discharging end of the transmission belt.

[0008] Further, the double-station feeding mechanism comprises a bottom plate, a feeding rack is slidably arranged on the bottom plate, two material bin assemblies are arranged on the feeding rack, and a card issuing mechanism is arranged above the feeding rack.

[0009] The material bin assembly comprises a cross beam, a load carrying device composed of a plurality of support rods arranged in parallel is installed on the cross beam, and products are placed on the load carrying device; and a lifting assembly for driving the material bin assembly to lift up and down is connected to each material bin assembly.

[0010] The card issuing mechanism comprises a card issuing rack, a card issuing cylinder mounted on the card issuing rack, a suction air transmission assembly for product suction and transmission mounted on a top rod of the card issuing cylinder, and the suction air transmission assembly comprises a suction air belt and a belt driving assembly for driving the suction air belt to rotate.

[0011] Further, the pre-acceleration mechanism comprises a pre-acceleration transmission belt, a pre-acceleration compression roller assembly mounted at an inlet end of the pre-acceleration transmission belt to prevent product edge lifting, and the pre-acceleration transmission belt is the suction air belt.

[0012] Further, the rejection mechanism comprises a rejection flap mounted between the code spraying detection mechanism and the deceleration transmission mechanism, a waste frame provided below the deceleration transmission mechanism to collect waste, a rejection guide plate mounted at an inlet end of the waste frame, and the rejection guide plate is arranged obliquely; the rejection flap is mounted with a turnover shaft, and the turnover shaft is connected with a rejection driving mechanism.

[0013] Further, the deceleration transmission mechanism comprises a conveying belt and a deceleration compression roller assembly, the deceleration compression roller assembly is arranged on an upper surface of the conveying belt along a product running route and extends from an inlet end to an outlet end of the conveying belt; the deceleration compression roller assembly comprises a sleeve mounting rod, compression rods connected to the sleeve mounting rod through connecting rods on both sides of the sleeve mounting rod, a plurality of mounting holes provided in the sleeve mounting rod, sleeves mounted in the mounting holes, rollers arranged in the sleeves, and a limiting ring arranged at a bottom of an inner circle of the sleeve to prevent the rollers from escaping.

[0014] Further, the vertical material collecting mechanism comprises a material collecting rack, a load belt, a belt lifting driving assembly for driving the load belt to lift up and down, and a belt rotating driving assembly for driving the load belt to rotate; a limiting assembly for limiting the product is arranged above the load belt, the limiting assembly comprises front and rear baffles arranged in front and behind and two paper slapping plates arranged on left and right sides; a through hole is provided in an upper portion of the front baffle, a vertical air blowing rod for preventing the product from lifting edges is arranged above the front baffle, a side air blowing rod is mounted on an outer side wall of the front baffle, and the side air blowing rod blows air to the product through the through hole of the front baffle; a discharging station is mounted at an outlet end of the load belt.

[0015] Further, two air blowing assemblies for facilitating product separation are arranged on the feeding rack, the air blowing assemblies comprise side air blowing assemblies and front air blowing assemblies, vertical plates are arranged through support rods on the feeding rack, the vertical plates are two and arranged on both sides of the product, and the side air blowing assemblies are arranged on upper ends of the vertical plates; the front air blowing assemblies are arranged on an outer side of a discharging end of the load device.

[0016] Further, the lifting assembly is located between the two hopper assemblies, the lifting assembly comprises side-by-side arranged belt assemblies, the belt assemblies comprise first belts and second belts, the first belts and the second belts are respectively provided with driving wheels and driven wheels at two ends, the two driving wheels are arranged in a staggered manner, the first belt driven wheel and the second belt driving wheel are sleeved on a lower shaft, the first belt driving wheel and the second belt driven wheel are sleeved on an upper shaft;

[0017] The lifting assembly further comprises an upper motor and a lower motor, the output end of the upper motor is connected with the upper shaft, and the upper motor drives the first belt driving wheel to rotate; the output end of the lower motor is connected with the lower shaft, and the lower motor drives the second belt driving wheel to rotate; the first belt and the second belt are respectively provided with connecting blocks;

[0018] The lifting assembly further comprises a mounting column mounted on the material rack, the two hopper assemblies are located on the left and right sides of the mounting column respectively, guide rails are mounted on the left and right side walls of the mounting column, sliding blocks are movably connected on the guide rails, and the cross beam is mounted on the sliding blocks;

[0019] The connecting blocks are connected with the corresponding sliding blocks after penetrating through the mounting column.

[0020] Further, the rejection driving mechanism comprises a turnover cylinder and a connecting rod assembly, the connecting rod assembly comprises first, second and third connecting rods which are rotationally connected in sequence, one end of the first connecting rod is connected with the turnover shaft, and the other end of the third connecting rod is mounted on the side plate of the speed reduction transmission mechanism; and the top rod of the turnover cylinder is connected with the midpoint of the third connecting rod.

[0021] Further, the material collecting rack is provided with a product stacking component, and the product stacking component is located above the material carrying belt; the product stacking component comprises a plurality of parallel stacking rods and a driving and transplanting component of the stacking rods.

[0022] The product stacking component is located above the material carrying belt; the product stacking component comprises a plurality of parallel stacking rods and a driving and transplanting component of the stacking rods. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model further illustrates in connection with the drawings and examples.

[0024] Figure 1 It is the structure schematic diagram of the utility model;

[0025] Figure 2 It is Figure 1 the top view of the utility model.

[0026] Figure 3 is a structural schematic diagram of a double-station feeding mechanism;

[0027] Figure 4 is a top view of Figure 3 ;

[0028] Figure 5 is a structural schematic diagram of a lifting assembly in a double-station feeding mechanism;

[0029] Figure 6 is a structural schematic diagram of Figure 5 after removing the mounting column;

[0030] Figure 7 is a structural schematic diagram of a code detection mechanism;

[0031] Figure 8 is a structural schematic diagram of a rejection mechanism;

[0032] Figure 9 is a partial enlarged view of A in Figure 8 ;

[0033] Figure 10 is an installation schematic diagram of a sleeve mounting rod, a sleeve, and a roller in a deceleration pressure roller assembly;

[0034] Figure 11 is a structural schematic diagram of a vertical material collecting mechanism;

[0035] Figure 12 is an installation schematic diagram of a front baffle and a side air blowing rod in a vertical material collecting mechanism.

[0036] 100. Double-station feeding mechanism, 200. Pre-acceleration mechanism, 300. Correction mechanism, 400. Code detection mechanism, 500. Rejection mechanism, 600. Deceleration transmission mechanism, 700. Vertical material collecting mechanism;

[0037] 101. Base plate, 102. Feeding rack, 103. Support rod, 104. Cross beam, 105. Side air blowing assembly, 106. Front air blowing assembly, 107. Hairpin rack, 108. Hairpin air cylinder, 109. Suction transmission assembly, 110. Mounting column, 111. Slide block, 112. Guide rail, 113. First belt, 114. Second belt, 115. Upper shaft, 116. Lower shaft, 117. Upper motor, 118. Lower motor, 119. Connecting block;

[0038] 201. Pre-acceleration pressure roller assembly;

[0039] 401. Detection rack, 402. Detection pressure roller assembly, 403. Code printer, 404. UV lamp, 405. Camera, 406. Detection transmission belt;

[0040] 501. Rejection flap, 502. Rejection guide plate, 503. Waste frame, 504. Turnover shaft, 505. First connecting rod, 506. Second connecting rod, 507. Third connecting rod, 508. Ejector rod, 509. Turnover cylinder;

[0041] 601. Conveying belt, 602. Sleeve mounting rod, 603. Sleeve, 604. Connecting rod, 605. Pressing rod;

[0042] 701. Loading belt, 702. Stacking rod, 703. Paper beating plate, 704. Front baffle, 705. Vertical air blowing rod, 706. Rear baffle, 707. Discharging station, 708. Side air blowing rod. DETAILED DESCRIPTION

[0043] The utility model will be explained in further detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only schematically show the basic structure of the utility model, so they only show the structure related to the utility model.

[0044] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the features limited as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0045] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0046] As Figure 1 , Figure 2A printed matter code spraying detection device is shown, which is sequentially provided with a double-station feeding mechanism 100, a pre-acceleration mechanism 200, a deviation rectifying mechanism 300, a code spraying detection mechanism 400, a rejection mechanism 500, a deceleration transmission mechanism 600 and a vertical material collecting mechanism 700 along a product running route; the code spraying detection mechanism 400 comprises a detection rack 401, and a detection transmission belt 406 for conveying products is installed on the detection rack 401; a code sprayer 403, a UV lamp 404 and a camera 405 are sequentially provided above the detection transmission belt 406 along the product running route, and the code sprayer 403, the UV lamp 404 and the camera 405 are respectively installed on the detection rack 401 through a cross beam; the transmission belt 406 is an air suction belt, and detection compression roller assemblies 402 for preventing product edge lifting are respectively installed at an inlet end and an outlet end of the transmission belt 406. The printed matter code spraying detection device is provided with a controller for controlling the operation of the entire printed matter code spraying detection device.

[0047] According to the use requirement, a plurality of code sprayers 403 can be provided.

[0048] As shown in Figure 3 and Figure 4 The double-station feeding mechanism 100 comprises a bottom plate 101, and a feeding rack 102 is slidably provided on the bottom plate 101; two material bin assemblies are provided on the feeding rack 102, and a card issuing mechanism is provided above the feeding rack 102; the material bin assembly comprises a cross beam 104, a load carrying device composed of a plurality of support rods 103 is installed on the cross beam 104, and products are placed on the load carrying device; a lifting assembly for driving the material bin assembly to lift up and down is connected to each material bin assembly; the card issuing mechanism comprises a card issuing rack 107, a card issuing cylinder 108 is installed on the card issuing rack 107, an air suction transmission assembly 109 for product suction transmission is installed on a top rod of the card issuing cylinder 108, and the air suction transmission assembly 109 comprises an air suction belt and a belt driving assembly for driving the air suction belt to rotate.

[0049] Two air blowing assemblies for facilitating product separation are provided on the feeding rack 102, and the air blowing assemblies comprise side air blowing assemblies 105 and front air blowing assemblies 106; vertical plates are provided on the feeding rack 102 and distributed through the support rods 103; the vertical plates are two and arranged at both sides of the products, and the side air blowing assemblies 105 are located at upper ends of the vertical plates; and the front air blowing assemblies 106 are located outside the load carrying device outlet end.

[0050] As shown in Figure 5 and Figure 6As shown, the lifting assembly is located between the two hopper assemblies, and the lifting assembly includes side-by-side arranged belt assemblies, the belt assemblies include a first belt 113 and a second belt 114, both ends of the first belt 113 and the second belt 114 are respectively provided with driving wheels and driven wheels, the two driving wheels are arranged staggered up and down, the first belt 113 driven wheel and the second belt 114 driving wheel are both sleeved on the lower shaft 116, the first belt 113 driving wheel and the second belt 114 driven wheel are both sleeved on the upper shaft 115; the lifting assembly further includes an upper motor 117 and a lower motor 118, the output end of the upper motor 117 is connected with the upper shaft 115, the upper motor 117 drives the first belt 113 driving wheel to rotate; the output end of the lower motor 118 is connected with the lower shaft 116, the lower motor 118 drives the second belt 114 driving wheel to rotate; the first belt 113 and the second belt 114 are respectively provided with a connecting block 119; the lifting assembly further includes a mounting column 110 mounted on the material rack 102, the two hopper assemblies are respectively located on the left and right sides of the mounting column 110, the mounting column 110 is provided with guide rails 112 on the left and right side walls, the guide rails 112 are interactively connected with sliding blocks 111, and the cross beam 104 is mounted on the sliding blocks 111; the connecting block 119 is linked with the corresponding sliding block 111 after penetrating through the mounting column 110.

[0051] The pre-acceleration mechanism 200 includes a pre-acceleration transmission belt, and a pre-acceleration compression wheel assembly 201 is mounted at the feeding end of the pre-acceleration transmission belt to prevent product edge curling, and the pre-acceleration transmission belt is an air suction belt.

[0052] As shown, Figures 8-10 The rejection mechanism 500 includes a rejection flap 501 mounted between the code detection mechanism 400 and the deceleration transmission mechanism 600, a waste frame 503 for collecting waste is arranged below the deceleration transmission mechanism 600, a rejection guide plate 502 is mounted at the feeding end of the waste frame 503, and the rejection guide plate 502 is arranged obliquely.

[0053] The rejection driving mechanism includes a turnover cylinder 509 and a connecting rod assembly, the connecting rod assembly includes a first connecting rod 505, a second connecting rod 506 and a third connecting rod 507 which are rotationally connected in sequence, one end of the first connecting rod 505 is connected with the turnover shaft 504, the other end of the third connecting rod 507 is mounted on the rack side plate of the deceleration transmission mechanism 600, and the top rod 508 of the turnover cylinder 509 is connected with the midpoint of the third connecting rod 507. When the top rod of the turnover cylinder 509 is extended or retracted, the turnover shaft 504 is driven to rotate forward or reverse through the transmission of the first connecting rod 505, the second connecting rod 506 and the third connecting rod 507, so as to drive the rejection flap 501 to turn over or reset.

[0054] The deceleration transmission mechanism 600 comprises a conveying belt 601 and a deceleration compression roller assembly, which is arranged on the upper surface of the conveying belt 601 along the product running route and extends from the feeding end to the discharging end of the conveying belt 601; the deceleration compression roller assembly comprises a sleeve mounting rod 602, compression rods 605 connected to the sleeve mounting rod 602 through connecting rods 604 on both sides of the sleeve mounting rod 602, a plurality of mounting holes formed in the sleeve mounting rod 602, sleeves 603 mounted in the mounting holes, rollers arranged in the sleeves 603, and limiting rings 606 arranged at the bottom of the inner circle of the sleeves 603 to prevent the rollers from escaping. The deceleration compression roller assembly can prevent the product from being warped and bulged in the middle, and improve the flatness of the product.

[0055] As shown in Figure 11 and Figure 12 The vertical material collecting mechanism 700 comprises a material collecting frame, a material carrying belt 701 arranged on the material collecting frame, a belt lifting driving assembly for driving the material carrying belt 701 to lift up and down, and a belt rotating driving assembly for driving the material carrying belt 701 to rotate; a limiting assembly for limiting the product is arranged above the material carrying belt 701, and the limiting assembly comprises front and rear baffles 704 and 706 arranged in front and back directions and two paper beating plates 703 arranged in left and right directions; a through hole is formed in the upper part of the front baffle 704, a vertical air blowing rod 705 for preventing the product from being warped is arranged above the front baffle 704, a side air blowing rod 708 is mounted on the outer wall of the front baffle 704, and the side air blowing rod 708 blows air to the product through the through hole of the front baffle 704; a discharging station 707 is mounted at the discharging end of the material carrying belt 701.

[0056] A stacking assembly for stacking the product is mounted on the material collecting frame and arranged above the material carrying belt 701; the stacking assembly comprises a plurality of stacking rods 702 arranged in parallel and a transplanting assembly for driving the stacking rods 702.

[0057] The working process of the printed matter code spraying detection device is as follows:

[0058] (1) Card, right side support rod 103 feeding, then the upper motor 117 in the lifting assembly drive first belt 113 driving wheel rotation, so that the right side of the connecting block 119 rises, thereby driving the right side of the support rod 103 rises; The right side of the support rod 103 rises to the target height, the card cylinder 108 top rod extends, drive suction transmission assembly 109 down, suction belt adsorption product; At the same time, side blowing gas assembly 105 and front blowing gas assembly 106 work, accelerate the separation of the adsorbed product and the next product, prevent the suction belt from taking away multiple products; Suction belt adsorption product and transmission to the pre-acceleration mechanism 200; Suction transmission assembly 109 works while the lifting assembly drives the right side of the support rod 103 to rise synchronously; The product carding process of the right side of the support rod 103, the left side of the support rod 103 feeds, when the product carding of the right side of the support rod 103 is completed, the feeding rack 102 moves along the bottom plate 101 to the right, the left side of the support rod 103 moves to the suction transmission assembly 109 below, and the carding action is repeated;

[0059] Step S2, pre-acceleration, the suction belt of the pre-acceleration mechanism 200 transports the product, which is used to improve the transmission speed of the product;

[0060] Step S3, deviation correction, the product passes through the deviation correction mechanism 300, and the products are arranged in order to ensure the position of the code;

[0061] Step S4, code detection, the product is transmitted to the code sprayer 403 to spray code, and after the code is sprayed, the product is dried by the UV lamp 404 and transmitted to the camera 405 (the camera is a face array camera here) to take a photo, and the product is visually detected, and the detection result is transmitted to the controller;

[0062] Step S5, rejection, according to the detection result, if it is a good product, the rejection flap 501 does not turn over, remains horizontally arranged, and ensures that the good product enters the deceleration transmission mechanism 600; If it is a bad product, the rejection driving mechanism works, drives the rotating shaft 504 to rotate, and then makes the rejection flap 501 turn over upward, a bad product channel is formed between the rejection flap 501 and the deceleration transmission mechanism 600, and the bad product enters the waste frame 503 after passing through the bad product channel and the rejection guide plate 502;

[0063] Step S6, deceleration transmission, the conveying belt 601 of the deceleration transmission mechanism 600 conveys the product, and the deceleration pressure roller assembly improves the flatness of the product and reduces the transmission speed of the product, preparing for subsequent material collection;

[0064] Step S7, vertical material receiving, after the product is conveyed by the deceleration transmission mechanism 600, it falls vertically on the material carrying belt 701 (at this time the material carrying belt 701 is stationary), the front baffle 704 and the rear baffle 706 prevent the product from slipping off the material carrying belt 701, at the same time, the paper beating plate 703 beats the two sides of the product, so that the product is received neatly; at the same time, the vertical air blowing rod 705 and the side air blowing rod 708 work, the vertical air blowing rod 705 prevents the product from being warped, and the side air blowing rod 708 can ensure that the product falling down reduces friction with the lower product, preventing the lower product from being scratched; when the material carrying belt 701 receives the material to the target height, the pile separating and transplanting assembly drives the pile separating rod 702 to move forward, moves to the upper side of the material carrying belt 701, and receives the product; then the material carrying belt 701 moves downward, and when it moves to the same height of the discharging station 707, the material carrying belt 701 rotates, conveying the piled product to the discharging station 707; after discharging, the material carrying belt 701 continues to rise to the target height, the pile separating rod 702 retreats, and the product of the pile separating rod 702 falls into the material carrying belt 701 under the action of the rear baffle 706, and the material carrying belt 701 continues to receive the material.

[0065] In summary, the utility model has the advantages of simple structure, reasonable design, separating the printed matter one by one through the card issuing mechanism 100, transmitting and correcting through the preacceleration mechanism 200 and the deviation correcting mechanism 300, spraying and photographing through the code spraying detection mechanism 400, removing the defective product through the scrap removing mechanism 500, and transmitting the good product to the vertical material receiving mechanism 700 through the deceleration transmission mechanism 600, high detection precision and fast detection speed, stable equipment operation, high degree of mechanization, saving labor, and improving product quality.

[0066] The above description is only a specific embodiment of the utility model, various examples do not constitute limitation to the essential content of the utility model, and the person skilled in the art can modify or deform the previous described specific embodiment after reading the specification, without departing from the essence and scope of the utility model.

Claims

1. A printed matter code spraying detection device, characterized by: Double-station feeding mechanism (100), pre-acceleration mechanism (200), deviation correction mechanism (300), code spraying detection mechanism (400), waste rejection mechanism (500), deceleration transmission mechanism (600) and vertical material receiving mechanism (700) are sequentially arranged along the product travel route; The code spraying detection mechanism (400) comprises a detection rack (401), and a detection transmission belt (406) for conveying products is installed on the detection rack (401); a code sprayer (403), a UV lamp (404) and a camera (405) are sequentially arranged along the product travel route above the detection transmission belt (406); and the code sprayer (403), the UV lamp (404) and the camera (405) are respectively installed on the detection rack (401) through cross beams. The transmission belt (406) is an air suction belt, and detection compression roller assemblies (402) for preventing product edge lifting are respectively installed at the feeding end and the discharging end of the transmission belt (406).

2. The printed matter code spraying detection device according to claim 1, characterized in that: The double-station feeding mechanism (100) comprises a bottom plate (101), and a feeding rack (102) is slidably arranged on the bottom plate (101); two material bin assemblies are arranged on the feeding rack (102); and a card issuing mechanism is arranged above the feeding rack (102). The material bin assembly comprises a cross beam (104), and a material carrying device composed of a plurality of support rods (103) arranged in parallel is installed on the cross beam (104); products are placed on the material carrying device; and a lifting assembly for driving the material bin assembly to lift up and down is connected to each material bin assembly. The card issuing mechanism comprises a card issuing rack (107), a card issuing cylinder (108) is installed on the card issuing rack (107), an air suction transmission assembly (109) for product suction transmission is installed on the top rod of the card issuing cylinder (108), and the air suction transmission assembly (109) comprises an air suction belt and a belt driving assembly for driving the air suction belt to rotate.

3. The printed matter code spraying detection device according to claim 1, characterized in that: The pre-acceleration mechanism (200) comprises a pre-acceleration transmission belt, and a pre-acceleration compression roller assembly (201) for preventing product edge lifting is installed at the feeding end of the pre-acceleration transmission belt; and the pre-acceleration transmission belt is an air suction belt.

4. The printed matter code spraying detection device according to claim 1, characterized in that: The waste rejection mechanism (500) comprises a waste rejection flap (501) installed between the code spraying detection mechanism (400) and the deceleration transmission mechanism (600); a waste material frame (503) for collecting waste materials is arranged below the deceleration transmission mechanism (600); a waste rejection guide plate (502) is installed at the feeding end of the waste material frame (503); and the waste rejection guide plate (502) is arranged in an inclined manner; the waste rejection flap (501) is provided with a turnover shaft (504), and a waste rejection driving mechanism is connected to the turnover shaft (504).

5. The printed matter code spraying detection device according to claim 1, characterized in that: The speed reduction transmission mechanism (600) comprises a conveying belt (601) and a speed reduction compression roller assembly, the speed reduction compression roller assembly is horizontally arranged on the upper surface of the conveying belt (601) along the product running route and is arranged from the feeding end to the discharging end of the conveying belt (601); the speed reduction compression roller assembly comprises a sleeve mounting rod (602), compression rods (605) are connected to the two sides of the sleeve mounting rod (602) through connecting rods (604), a plurality of mounting holes are formed in the sleeve mounting rod (602), sleeves (603) are mounted in the mounting holes, rollers are arranged in the sleeves (603), and limiting rings (606) for preventing the rollers from escaping are arranged at the bottom of the inner circle of the sleeves (603).

6. The printed matter code spraying detection device according to claim 1, characterized in that: The vertical material collecting mechanism (700) comprises a material collecting rack, a material carrying belt (701), a belt lifting driving assembly for driving the material carrying belt (701) to lift up and down, and a belt rotating driving assembly for driving the material carrying belt (701) to rotate are arranged on the material collecting rack; a limiting assembly for limiting the product is arranged above the material carrying belt (701), the limiting assembly comprises front and rear baffles (704) and (706) and two paper beating plates (703) arranged on the left and right sides; a through hole is formed in the upper portion of the front baffle (704), a vertical air blowing rod (705) for preventing the product from being warped is arranged above the front baffle (704), a side air blowing rod (708) is mounted on the outer wall of the front baffle (704), and the side air blowing rod (708) blows air to the product through the through hole of the front baffle (704); a discharging station (707) is mounted at the discharging end of the material carrying belt (701).

7. The printed matter code spraying detection device according to claim 2, characterized in that: The feeding rack (102) is provided with two air blowing assemblies for facilitating product separation, the air blowing assemblies comprise side air blowing assemblies (105) and front air blowing assemblies (106), the feeding rack (102) is provided with vertical plates (104) penetrating through the supporting rods (103), the vertical plates are arranged on the two sides of the product and are arranged on the upper ends of the vertical plates (104); and the front air blowing assemblies (106) are arranged outside the discharging end of the material carrying device.

8. The printed matter code spraying detection device according to claim 2, characterized in that: The lifting assembly is arranged between the two hopper assemblies, the lifting assembly comprises side-by-side arranged belt assemblies, the belt assemblies comprise first belts (113) and second belts (114), the two ends of the first belts (113) and the second belts (114) are respectively provided with driving wheels and driven wheels, the two driving wheels are arranged in a staggered mode up and down, the driving wheel of the first belt (113) and the driving wheel of the second belt (114) are both sleeved on a lower shaft (116), and the driving wheel of the first belt (113) and the driven wheel of the second belt (114) are both sleeved on an upper shaft (115); The lifting assembly further comprises an upper motor (117) and a lower motor (118), the output end of the upper motor (117) is connected with the upper shaft (115), and the upper motor (117) drives the driving wheel of the first belt (113) to rotate; the output end of the lower motor (118) is connected with the lower shaft (116), and the lower motor (118) drives the driving wheel of the second belt (114) to rotate; and connecting blocks (119) are respectively mounted on the first belt (113) and the second belt (114). The lifting assembly further comprises a mounting column (110) mounted on the material rack (102), two material bin assemblies are respectively arranged on the left and right sides of the mounting column (110), guide rails (112) are mounted on the left and right side walls of the mounting column (110), sliding blocks (111) are interactively connected to the guide rails (112), and the cross beam (104) is mounted on the sliding blocks (111). The connecting block (119) is linked with the corresponding sliding block (111) after penetrating through the mounting column (110).

9. The printed matter code spraying detection device according to claim 4, characterized in that: The ejection driving mechanism comprises a turnover cylinder (509) and a connecting rod assembly, the connecting rod assembly comprises a first connecting rod (505), a second connecting rod (506) and a third connecting rod (507) which are rotationally connected in sequence, one end of the first connecting rod (505) is connected with the turnover shaft (504), the other end of the third connecting rod (507) is mounted on the rack side plate of the speed reduction transmission mechanism (600), and the top rod (508) of the turnover cylinder (509) is connected with the midpoint of the third connecting rod (507).

10. The printed matter code spraying detection device according to claim 6, characterized in that: A product stacking assembly is mounted on the material collecting rack, and the product stacking assembly is arranged above the material carrying belt (701); the product stacking assembly comprises a plurality of parallel arranged stacking rods (702) and a transplanting assembly for driving the stacking rods (702).

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