Visual detection device for production of self-adhesive label paper

Abstract

The application relates to the technical field of adhesive label paper detection devices, in particular to a visual detection device for adhesive label paper production, which comprises a workbench, a winding part and an unwinding part, a first visual detection module and a second visual detection module are arranged on the workbench, a plurality of guide rollers for adjusting the direction of label paper are arranged on the workbench, a positioning locking piece is arranged in the middle of the workbench, a continuous detection unit is arranged on the workbench close to the first visual detection module, and a vacancy filling unit is arranged on the workbench close to the second visual detection module. The visual detection device for adhesive label paper production is used for solving the vacancy problem of the label paper roll, the positioning locking piece, the continuous detection unit and the vacancy filling unit are used in cooperation, label paper can be quickly filled during the detection process, the device does not need to be stopped for operation, the pain point of traditional equipment that needs to be stopped for material supplement is solved, and the detection efficiency is remarkably improved.

Description

Technical Field

[0001] This invention relates to the technical field of self-adhesive label paper inspection devices, specifically a visual inspection device for self-adhesive label paper production. Background Technology

[0002] Visual inspection devices used in self-adhesive label production typically consist of a camera, lighting system, control device, and protection device. Existing devices struggle to flatten the label paper during inspection, and wrinkles in the label paper can cause distortion in image capture, thus affecting the accuracy of defect identification.

[0003] To address the above issues, a visual inspection device for self-adhesive label production, with announcement number CN119269402B, relates to the field of label visual inspection technology. It includes an inspection table and a leveling device. A winding device is installed on the top of the inspection table, and a maintenance frame is fixedly installed on the top of the inspection table. A visual inspection device is fixedly inserted through the top of the maintenance frame, and a drive plate is fixedly installed on the top of the inspection table. Position correction ensures that the label is in the correct centered position during inspection, improving the accuracy of image capture and further reducing the scrap rate caused by misjudgment.

[0004] However, in actual use, we found that the aforementioned patent uses a servo motor to synchronously drive the leveling rod to rotate counterclockwise. The rotation of the leveling rod, in conjunction with the rotating rod, squeezes and flattens the label paper. By flattening the label paper, the visual inspection equipment can capture a clearer image, thereby improving recognition accuracy and reducing missed detections or misjudgments caused by wrinkles. The correction rod moves towards the label paper, causing the correction frame to move and correct the position of the label paper to be inspected. However, due to the empty space on the label paper roll, staff need to replenish the label paper. Currently, label paper replenishment is generally done manually when the machine is stopped. This not only has low replenishment efficiency but also reduces the inspection efficiency of the label paper due to equipment downtime, which to some extent restricts the development of enterprises.

[0005] Therefore, we propose a visual inspection device for the production of self-adhesive label paper. Summary of the Invention

[0006] One of the technical problems this application aims to solve is: how to design a vision inspection device that does not require shutdown.

[0007] To address the aforementioned technical problems, this application provides a visual inspection device for self-adhesive label production, comprising a worktable, a winding section, and an unwinding section. The worktable is equipped with a first visual inspection module and a second visual inspection module. The worktable is also equipped with multiple guide rollers for adjusting the orientation of the label paper. A positioning locking element is provided in the center of the worktable. A continuous inspection unit is provided on the worktable near the first visual inspection module, and a gap filling unit is provided on the worktable near the second visual inspection module.

[0008] In some embodiments, the positioning locking component includes a fixed roller disposed in the middle of the worktable, a locking roller movably disposed in the middle of the worktable, a sliding frame disposed in the middle of the worktable, a lifting screw rotatably disposed on the sliding frame, a lifting block threadedly connected to the lifting screw, the locking roller being located on the lifting block, and a locking motor connected to the lifting screw disposed in the middle of the worktable.

[0009] In some embodiments, the continuous detection unit includes a plurality of upper and lower extrusion rollers respectively disposed on a worktable, and each of the upper and lower extrusion rollers is provided with an adjustment element, and a progressive pressing assembly is disposed on the worktable.

[0010] In some embodiments, the adjusting member includes two drive shafts rotatably mounted on a worktable, each drive shaft being provided with a pulley, a conveyor belt being provided between the two pulleys, a connecting rod being provided on the conveyor belt, and the upper extrusion roller or the lower extrusion roller being located on the connecting rod.

[0011] In some embodiments, the progressive pressing assembly includes a mounting bracket disposed on a worktable, an electric actuator disposed on the mounting bracket, a bent rod disposed at the end of the electric actuator, and a transmission element disposed on the bent rod for use in conjunction with an adjusting member.

[0012] In some embodiments, the transmission component includes a drive rack disposed at both ends of the bent rod, and each transmission shaft is provided with a driven gear, wherein the drive rack meshes with the driven gear on the adjacent side of the transmission shaft.

[0013] In some embodiments, the vacancy subsidy unit includes a shifting frame disposed on a workbench, a moving component disposed on the shifting frame, a rotating frame disposed on the moving component, a label paper placement rack slidably disposed on the rotating frame, an adjusting screw rotatably disposed on the rotating frame, the label paper placement rack and the adjusting screw being threadedly connected, and a label paper adjustment control being disposed on the label paper placement rack.

[0014] In some embodiments, the moving component includes a movable lead screw rotatably mounted on a shifting frame, a movable block threadedly connected to the movable lead screw, a movable motor mounted on the worktable, a drive shaft rotatably mounted on the movable block, a rotating frame mounted on the drive shaft, and a rotary motor connected to the drive shaft mounted on the movable block.

[0015] In some embodiments, the label paper adjustment control includes a power module disposed on a label paper placement rack. The label paper placement rack is provided with an unwinding roller and a take-up roller connected to the power module. The label paper placement rack is provided with an adjustment roller and a label release plate. The label paper on the unwinding roller passes sequentially through an adjacent adjustment roller, a label release plate, and an adjustment roller on the other side, and finally winds around the outside of the take-up roller.

[0016] In some embodiments, the label release plate is provided with a side support plate, a pressure roller is slidably arranged on the side support plate, and a compression spring is provided between the side support plate and the pressure roller.

[0017] This invention has at least the following beneficial effects:

[0018] 1. To address the issue of empty spaces on the label roll, the device is equipped with a positioning locking device, a continuous detection unit, and an empty space filling unit working together. This allows for rapid filling of label paper during the detection process without stopping the machine, solving the pain point of "stopping the machine to fill the material" in traditional equipment and significantly improving detection efficiency.

[0019] 2. The continuous detection unit can continuously detect labels while applying labels. It includes an upper extrusion roller, a lower extrusion roller, and a progressive pressing assembly. Multiple upper extrusion rollers are paired with adjacent lower extrusion rollers to guide the label roll, allowing the tested label to be adjusted up and down, which facilitates the normal detection of subsequent labels. After the label is applied, the progressive pressing assembly can be controlled to reset and resume normal operation.

[0020] 3. The empty space subsidy unit includes a shift frame, a moving component, a rotating frame, and a label paper placement rack. The moving component (moving screw, moving block) drives the rotating frame to move laterally along the shift frame, adjusting the position of the label paper placement rack so that it aligns with the main label paper path. The label paper placement rack controls the lateral movement of the label release plate through the adjusting screw, and works in conjunction with the unwinding and rewinding rollers driven by the power module (motor) to achieve automatic unwinding and rewinding of spare label paper. The pressure roller on the label release plate maintains close contact with the label paper through compression springs to ensure smooth label paper delivery. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 Another structural diagram;

[0023] Figure 3 For the present invention Figure 2 Schematic diagram of partial cross-section;

[0024] Figure 4 This is the overall front view of the invention;

[0025] Figure 5 This is a rear view of the entire invention;

[0026] Figure 6 This is a schematic diagram of the positioning locking component structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the continuous detection unit structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the continuous detection unit of the present invention from another orientation.

[0029] Figure 9 For the present invention Figure 8 Enlarged structural diagram of area A in the middle;

[0030] Figure 10 This is a schematic diagram of a partial cross-sectional structure of the vacancy subsidy unit of the present invention;

[0031] Figure 11 For the present invention Figure 10 Schematic diagram of partial structural explosion;

[0032] Figure 12 For the present invention Figure 11 Another structural diagram;

[0033] Figure 13 This is a schematic diagram of the label paper adjustment control structure of the present invention;

[0034] Figure 14 For the present invention Figure 13 A magnified structural diagram of area B in the middle.

[0035] In the diagram: 1. Workbench; 2. Rewinding section; 3. Unwinding section; 4. First vision inspection module; 5. Second vision inspection module; 6. Guide roller; 7. Positioning locking component; 71. Fixed roller; 72. Locking roller; 73. Sliding frame; 74. Lifting screw; 75. Lifting block; 76. Locking motor; 8. Continuous detection unit; 81. Upper extrusion roller; 82. Lower extrusion roller; 9. Adjusting component; 91. Drive shaft; 92. Pulley; 93. Conveyor belt; 94. Connecting rod; 10. Progressive pressing assembly; 101. Mounting bracket; 102. Electric actuator; 103. Bending... 11. Rod; 12. Transmission component; 13. Drive rack; 14. Driven gear; 15. Empty space subsidy unit; 16. Transfer frame; 17. Rotating frame; 18. Label paper placement rack; 19. Adjusting screw; 10. Moving component; 11. Moving screw; 12. Moving block; 13. Moving motor; 14. Drive shaft; 15. Rotary motor; 16. Label paper adjustment control; 17. Power module; 18. Unwinding roller; 19. Rewinding roller; 10. Adjusting roller; 11. Label release plate; 12. Side support plate; 11. Pressure roller; 12. Compression spring. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figures 1-14 The present invention provides a technical solution:

[0038] A visual inspection device for producing self-adhesive label paper includes a worktable 1, a winding section 2, and an unwinding section 3. The worktable 1 is a common existing structure and will not be described in detail here. The winding section 2 and the unwinding section 3 are provided with placement chucks, and the label paper rolls are respectively mounted on the winding section 2 and the unwinding section 3 through the placement chucks. The worktable 1 is provided with drive motors for controlling the rotation of the winding section 2 and the unwinding section 3, and the drive motors are electrically connected to the controller on the worktable 1.

[0039] The workbench 1 is equipped with a first vision detection module 4 and a second vision detection module 5. The workbench 1 is also equipped with multiple guide rollers 6 for adjusting the direction of the label paper. The first vision detection module 4 is located on one side of the unwinding section 3, and the second vision detection module 5 is located on one side of the winding section 2. Both are electrically connected to the controller on the workbench 1. The first vision detection module 4 and the second vision detection module 5 each include a display base plate that is attached to the label paper roll and a vision recognition device located above the display base plate. When the label paper roll passes through the display base plate, the vision recognition device can detect the label paper on it.

[0040] If the first vision detection module 4 detects a gap, it will send a signal to the controller, which will then control the unwinding section 3 and the winding section 2 to slow down, so that the gap position can be more accurately determined when it reaches the second vision detection module 5, thus avoiding the situation where the gap position on the label roll is over-released.

[0041] Multiple guide rollers 6 are provided, located at different positions on the worktable 1. They serve to guide the label rolls, allowing them to enter the main adjustment positions such as the imaging base plate as required. The position and number of guide rollers 6 are adjustable and not limited, and can be adjusted according to work needs.

[0042] A positioning locking component 7 is provided in the middle of the workbench 1, a continuous detection unit 8 is provided on the workbench 1 near the first vision detection module 4, and a space subsidy unit 12 is provided on the workbench 1 near the second vision detection module 5.

[0043] The positioning locking component 7 includes a fixed roller 71 disposed in the middle of the worktable 1, and a locking roller 72 movably disposed in the middle of the worktable 1. The fixed roller 71 and the locking roller 72 are used together. The fixed roller 71 is installed on the worktable 1 in a detachable manner by bolts or the like. The locking roller 72 is adjusted up and down on the worktable 1. When it is necessary to attach the label roll, the locking roller 72 is controlled to descend until the label roll is clamped between the fixed roller 71 and the locking roller 72.

[0044] A sliding frame 73 is provided in the middle of the workbench 1. A lifting screw 74 is rotatably mounted on the sliding frame 73. A lifting block 75 is threadedly connected to the lifting screw 74. The locking roller 72 is located on the lifting block 75. A locking motor 76 connected to the lifting screw 74 is provided in the middle of the workbench 1. When the locking motor 76 is started, it drives the lifting screw 74 to rotate. The lifting screw 74 drives the lifting block 75 threadedly connected to it. The lifting of the lifting block 75 directly drives the locking roller 72 to be adjusted, thereby completing the adjustment of the distance between the locking roller 72 and the fixed roller 71.

[0045] The continuous detection unit 8 includes multiple upper extrusion rollers 81 and lower extrusion rollers 82 respectively arranged on the worktable 1. Adjustment components 9 are provided on both the upper extrusion rollers 81 and lower extrusion rollers 82. A progressive pressing assembly 10 is provided on the worktable 1.

[0046] In this design, there are three upper-layer pressing rollers 81 and three lower-layer pressing rollers 82, but this is not a limitation. Starting from the side closest to the fixed roller 71, adjacent upper-layer pressing rollers 81 and lower-layer pressing rollers 82 are arranged in pairs. That is, this design can adjust three groups of label paper rolls. The progressive pressing component 10 realizes the progressive adjustment function of these three groups. Through this progressive pressing, the number of adjustments of upper-layer pressing rollers 81 and lower-layer pressing rollers 82 can be reduced. At the same time, the number of friction points between upper-layer pressing rollers 81 and lower-layer pressing rollers 82 and label paper rolls can also be reduced.

[0047] The adjusting component 9 includes two drive shafts 91 rotatably mounted on the worktable 1. Each drive shaft 91 is equipped with a pulley 92. A conveyor belt 93 is provided between the two pulleys 92. A connecting rod 94 is provided on the conveyor belt 93. The upper extrusion roller 81 or the lower extrusion roller 82 is located on the connecting rod 94. The rotation of the drive shaft 91 drives the pulley 92 to rotate. The pulley 92 drives the other drive shaft 91 and pulley 92 to rotate through the conveyor belt 93, thereby realizing the position adjustment of the connecting rod 94 and the upper extrusion roller 81 or the lower extrusion roller 82.

[0048] In this scheme, at least one of the transmission shafts 91 in the adjustment component 9 is a damping shaft. By setting the damping shaft, the transmission shaft 91 can be locked and positioned after rotation, that is, the position of the conveyor belt 93 and its upper extrusion roller 81 or lower extrusion roller 82 can be locked.

[0049] The progressive pressing assembly 10 includes a mounting bracket 101 mounted on a workbench 1. An electric push rod 102 is mounted on the mounting bracket 101. A bent rod 103 is mounted at the end of the electric push rod 102. A transmission component 11 that cooperates with the adjusting component 9 is mounted on the bent rod 103.

[0050] The bent rod 103 is slidably connected to the mounting bracket 101, which provides a guide limit for the sliding of the bent rod 103 and prevents the bent rod 103 from shaking when it moves.

[0051] The transmission component 11 includes drive racks 111 disposed at both ends of the bent rod 103. Each transmission shaft 91 is provided with a driven gear 112. The drive rack 111 meshes with the driven gear 112 on the adjacent side of the transmission shaft 91. The drive rack 111 contacts and meshes with the driven gear 112, and then the drive rack 111 shifts to drive the driven gear 112 to rotate, thereby driving the adjacent transmission shaft 91 to rotate.

[0052] In use, the label roll is released from the unwinding section 3 and guided by the guide roller 6. It first passes through the first vision detection module 4. The vision recognition device in the module detects the label roll passing through the imaging base plate. If a gap is found (i.e., an area without a label), the first vision detection module 4 will immediately send a signal to the controller. The controller then controls the drive motor to slow down the operation speed of the unwinding section 3 and the winding section 2. This deceleration is to allow the label roll to reach the second vision detection module 5 at a lower speed, so that the second vision detection module 5 can more accurately locate the specific position of the gap and avoid over-release or inaccurate positioning of the gap due to high-speed movement.

[0053] Once the second vision detection module 5 accurately identifies an empty space, if an operation such as patching is required, the controller will activate the positioning locking component 7: the locking motor 76 drives the lifting screw 74 to rotate, which in turn drives the lifting block 75 and the locking roller 72 to descend, clamping the label roll between the locking roller 72 and the fixed roller 71, thus pausing the movement of the paper roll and providing stable positioning conditions for the subsequent empty space patching unit 12 to operate.

[0054] During the paper roll's movement, the upper and lower extrusion rollers 81 and 82 of the continuous detection unit 8 progressively press the label paper under the action of the progressive pressing assembly 10, keeping the paper roll flat and reducing friction. The working method is as follows: the electric push rod 102 pushes the bending rod 103 to move, and the drive rack 111 on the bending rod 103 drives the driven gear 112 on the transmission shaft 91 to rotate. Then, the height of the extrusion rollers on the connecting rod 94 is adjusted through the pulley 92 and the conveyor belt 93 to achieve progressive adjustment of multiple sets of rollers. After adjustment, the position is locked by the damping shaft.

[0055] Example 2: Please refer to Figures 1-5 , Figures 10-13 The present invention provides a technical solution:

[0056] A visual inspection device for producing self-adhesive label paper includes a space filling unit 12 comprising a shifting frame 121 mounted on a workbench 1, a moving part 13 mounted on the shifting frame 121, a rotating frame 122 mounted on the moving part 13, and a label paper placement rack 123 slidably mounted on the rotating frame 122. The shifting frame 121 is fixedly mounted on the workbench 1, and the rotating frame 122 can be shifted and adjusted above the shifting frame 121 via the moving part 13. This shifting and adjustment enables the position adjustment of the label paper placement rack 123.

[0057] An adjusting screw 124 is rotatably mounted on the rotating frame 122. The label paper placement rack 123 is threadedly connected to the adjusting screw 124. The adjusting screw 124 is rotatably mounted on the rotating frame 122. A knob is provided at either end of the adjusting screw. The label paper placement rack 123 can be finely adjusted by adjusting the knob to adapt to the use requirements of labels of different sizes. A label paper adjustment control 14 is provided on the label paper placement rack 123.

[0058] The moving component 13 includes a moving screw 131 rotatably mounted on the shifting frame 121. A moving block 132 is threaded onto the moving screw 131. An arc-shaped groove is provided on the moving block 132. A protruding post is provided on the rotating frame 122. The protruding post is located inside the arc-shaped groove. The arc-shaped groove limits the movement of the protruding post, which helps to control the rotation angle of the rotating frame 122 and prevents the label paper placement rack 123 from excessively squeezing the label paper roll. A moving motor 133 is provided on the worktable 1. A drive shaft 134 is rotatably mounted on the moving block 132. The rotating frame 122 is mounted on the drive shaft 134. A rotary motor 135 connected to the drive shaft 134 is provided on the moving block 132.

[0059] The label paper adjustment control 14 includes a power module 141 disposed on the label paper placement rack 123. The label paper placement rack 123 is provided with an unwinding roller 142 and a winding roller 143 connected to the power module 141. The power module 141 consists of a drive motor, a connecting shaft connected to the unwinding roller 142 and the winding roller 143, and two connecting gears located on the connecting shaft and meshing with each other. The power module 141 can control the unwinding roller 142 to release the label paper roll and simultaneously control the winding roller 143 to wind up the label paper roll.

[0060] The label holder 123 is equipped with an adjusting roller 144 and a label release plate 145. The label paper on the unwinding roller 142 passes through the adjacent adjusting roller 144, the label release plate 145 and the adjusting roller 144 on the other side in sequence and finally winds around the outside of the take-up roller 143. The label release plate 145 is a thin plate. When a label paper roll reaches the end of the thin plate, the label paper roll is retracted along the label release plate 145, causing one end of the label paper to protrude. The rotating frame 122 and the label paper on it are rotated by the rotating motor 135, so that the label paper sticks to the empty space to achieve patching.

[0061] When applying the label, the take-up section 2 stops working, and the unwind section 3 unwinds normally (the unwinding speed can be adjusted according to the condition of the label roll; if an empty space appears again when applying the label normally in the previous empty space, the unwinding speed should be slowed down; if no empty space appears when applying the label normally in the previous empty space, the speed can be kept up). This needs to be done in cooperation with the second vision detection module 5, and the positioning locking component 7 should be reset.

[0062] Once one end of the label is stuck to the empty space, the positioning locking part 7 is reset, the winding part 2 starts to work, the unwinding part 3 unwinds normally, and the winding part 2 can be appropriately accelerated.

[0063] Once the second vision detection module 5 accurately identifies the empty space on the label roll, the controller activates the empty space compensation unit 12. First, the moving motor 133 operates, driving the moving screw 131 to rotate, which in turn moves the moving block 132 and the entire rotating frame 122 horizontally along the shift frame 121, initially positioning the label placement rack 123 approximately above the empty space. Then, the rotary motor 135 operates, driving the drive shaft 134 to rotate, which in turn rotates the rotating frame 122 and the label placement rack 123 on it to make minor adjustments to the rotation angle. The arc groove on the moving block 132 limits the protrusion on the rotating frame 122 to prevent excessive rotation.

[0064] After the position is aligned, the power module 141 works, and its drive motor synchronously controls the unwinding roller 142 and the take-up roller 143 through the connecting gear set, so that the label paper is released from the unwinding roller 142, guided by the adjusting roller 144 and tension controlled, and sent out from the end of the label release plate 145. At this time, the rotary motor 135 is activated again, controlling the rotating frame 122 to press down, so that the section of label paper that has been exposed at the end of the label release plate 145 is firmly pasted to the empty space of the label paper roll under pressure.

[0065] During the labeling process, the take-up section 2 pauses its work, while the unwinding section 3 decides whether to maintain the original speed or slow down depending on whether a new empty space is detected. After the label is pasted, the positioning lock 7 is released, the take-up section 2 restarts and can be accelerated appropriately, while the unwinding section 3 unwinds normally to roll up the pasted label paper, completing the entire empty space pasting process.

[0066] Example 3: Please refer to Figures 11-14 The present invention provides a technical solution:

[0067] A visual inspection device for producing self-adhesive label paper, wherein a side support plate 15 is provided on the label release plate 145, a pressure roller 16 is slidably provided on the side support plate 15, and a compression spring 17 is provided between the side support plate 15 and the pressure roller 16.

[0068] The pressure roller 16 consists of a guide frame slidably disposed on the side support plate 15 and a roller body rotatably disposed on the guide frame. The compression spring 17 is located between the guide frame and the side support plate 15. Through the arrangement of the pressure roller 16 and the compression spring 17, the label paper can be better laid flat after being stuck on the empty space, avoiding defects such as wrinkles.

[0069] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0070] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A visual inspection device for producing self-adhesive label paper, comprising a worktable (1), a winding section (2), and an unwinding section (3), characterized in that: The workbench (1) is provided with a first visual inspection module (4) and a second visual inspection module (5). The workbench (1) is provided with multiple guide rollers (6) for adjusting the orientation of the label paper. A positioning locking element (7) is provided in the middle of the workbench (1). A continuous inspection unit (8) is provided on the workbench (1) near the first visual inspection module (4). A gap filling unit (12) is provided on the workbench (1) near the second visual inspection module (5). The continuous inspection unit (8) includes multiple upper extrusion rollers (81) and lower extrusion rollers (82) respectively arranged on the workbench (1). Adjusting elements (9) are provided on both the upper extrusion rollers (81) and the lower extrusion rollers (82). A progressive pressing assembly (10) is provided on the workbench (1). The adjusting element (9) includes two drive shafts (91) respectively rotatably arranged on the workbench (1). Each drive shaft (91) is provided with a pulley (92), and a conveyor belt (93) is provided between the two pulleys (92). A connecting rod (94) is provided on the conveyor belt (93). The upper extrusion roller (81) or the lower extrusion roller (82) is located on the connecting rod (94). The progressive pressing assembly (10) includes a mounting bracket (101) provided on the workbench (1). An electric push rod (102) is provided on the mounting bracket (101). A bent rod (103) is provided at the end of the electric push rod (102). A transmission component (11) is provided on the bent rod (103) to cooperate with the adjusting component (9). The transmission component (11) includes a drive rack (111) provided at both ends of the bent rod (103). A driven gear (112) is provided on each drive shaft (91). The drive rack (111) meshes with the driven gear (112) on the adjacent drive shaft (91).

2. The visual inspection device for self-adhesive label production according to claim 1, characterized in that: The positioning locking component (7) includes a fixed roller (71) disposed in the middle of the worktable (1), a locking roller (72) movably disposed in the middle of the worktable (1), a sliding frame (73) disposed in the middle of the worktable (1), a lifting screw (74) rotatably disposed on the sliding frame (73), a lifting block (75) threadedly connected to the lifting screw (74), the locking roller (72) being located on the lifting block (75), and a locking motor (76) connected to the lifting screw (74) disposed in the middle of the worktable (1).

3. The visual inspection device for self-adhesive label paper production according to claim 1, characterized in that: The vacancy subsidy unit (12) includes a shift frame (121) set on the workbench (1), a moving part (13) is set on the shift frame (121), a rotating frame (122) is set on the moving part (13), a label paper placement rack (123) is slidably set on the rotating frame (122), an adjusting screw (124) is rotatably set on the rotating frame (122), the label paper placement rack (123) and the adjusting screw (124) are threadedly connected, and a label paper adjustment control (14) is set on the label paper placement rack (123).

4. The visual inspection device for self-adhesive label production according to claim 3, characterized in that: The moving part (13) includes a moving screw (131) rotatably mounted on a shifting frame (121), a moving block (132) threadedly connected to the moving screw (131), a moving motor (133) mounted on the worktable (1), a drive shaft (134) rotatably mounted on the moving block (132), a rotating frame (122) mounted on the drive shaft (134), and a rotary motor (135) connected to the drive shaft (134) mounted on the moving block (132).

5. The visual inspection device for self-adhesive label production according to claim 4, characterized in that: The label paper adjustment control (14) includes a power module (141) disposed on a label paper placement rack (123). The label paper placement rack (123) is provided with an unwinding roller (142) and a take-up roller (143) connected to the power module (141). The label paper placement rack (123) is provided with an adjustment roller (144) and a label release plate (145). The label paper on the unwinding roller (142) passes through the adjacent adjustment roller (144), the label release plate (145) and the adjustment roller (144) on the other side in sequence and finally wraps around the outside of the take-up roller (143).

6. The visual inspection device for self-adhesive label production according to claim 5, characterized in that: A side support plate (15) is provided on the label release plate (145), and a pressure roller (16) is slidably provided on the side support plate (15). A compression spring (17) is provided between the side support plate (15) and the pressure roller (16).

Images