Device for detecting color difference of self-adhesive label

Abstract

The invention belongs to the technical field of non-setting adhesive label color difference detection, and particularly relates to a non-setting adhesive label color difference detection device which comprises a detection box, a detection table is arranged in the detection box, and a colorimeter is arranged at the top in the detection box and used for measuring the color of a non-setting adhesive label continuously moving on the detection table; two cylindrical cavities are formed in the box bottom below the detection table, and a moving cavity is formed in the top of each cylindrical cavity in an inclined and upward manner; a winding mechanism is arranged in each cylindrical cavity, and the winding mechanisms are used for unwinding and winding the roll-shaped self-adhesive labels; according to the color difference detection device, the rolled self-adhesive label does not need to be cut firstly and then subjected to color difference detection, so that the color difference detection accuracy of the self-adhesive label can be improved, meanwhile, the detected self-adhesive label can be normally used conveniently, and unnecessary waste is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of color difference detection of self-adhesive labels, and in particular relates to a device for color difference detection of self-adhesive labels. Background Art

[0002] Compared with traditional labels, self-adhesive labels have the advantages of no need to apply glue, paste, or dip in water, no pollution, and save labeling time. They have a wide range of applications and are convenient and fast. Self-adhesive labels are a kind of material, also called self-adhesive label material. They are a composite material with paper, film or other special materials as the surface, adhesive on the back, and silicone-coated protective paper as the base paper. After printing, die-cutting and other processing, they become finished labels.

[0003] The color difference of self-adhesive labels is directly related to the use effect. Good products have small color difference, the color tones between products are basically consistent, and the color is bright and uniform. However, the existing devices for detecting the color difference of self-adhesive labels mostly place a single self-adhesive label on the clamping mechanism of the detection device, and then measure its color through a colorimeter for detecting color.

[0004] Obviously, since most label tapes are wound in rolls, if the existing color difference detection device is used for color detection, the wound label tape must be cut and then placed in the detection device for color detection processing. Obviously, this method will not only reduce the efficiency of color difference detection of self-adhesive labels, but also easily cause unnecessary waste of self-adhesive labels after detection. Summary of the invention

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention discloses a device for color difference detection of self-adhesive labels, comprising a detection box, a detection table is arranged in the detection box, and a colorimeter is arranged on the top of the detection box, and the colorimeter is used to measure the color of the self-adhesive labels that are constantly moving on the detection table; two cylindrical cavities are arranged on the bottom of the box below the detection table, and a moving cavity is arranged on the top of each cylindrical cavity that is inclined upward; a winding mechanism is arranged in each of the cylindrical cavities, and the winding mechanism is used to release and rewind the rolled self-adhesive labels.

[0006] Preferably, the winding mechanism includes a shaft rod, which is rotatably installed in the cylindrical cavity, and its inner end portion is connected to the fixed servo motor output shaft, and a reel is sleeved on the shaft rod, and a wound label tape is installed on the reel, and a gasket sheet for blocking the reel is sleeved on the shaft rod, a sealing ring is sealed at the cavity opening of the cylindrical cavity, and a sealing strip is installed on the sealing ring for sealing to the cavity opening of the movable cavity, the sealing ring is sleeved on the shaft rod, and a limiting sleeve is provided on the inner side surface of the sealing ring, the limiting sleeve is sleeved on the shaft rod, and its inner end face is in contact with the gasket sheet.

[0007] Preferably, recessed cavities are provided inwardly at both ends of the detection platform, and a guide roller is rotatably installed in each recessed cavity through a rotating shaft. The depth of the recessed cavity on the right side is greater than that of the recessed cavity on the left side, and square sliding grooves are provided on the front and rear walls of the recessed cavity on the right side, and a sliding tensioning mechanism is provided in the square sliding groove, which is connected to the rotating shaft on the right side. A rejection mechanism is provided at the right end of the detection platform.

[0008] Preferably, the sliding tensioning mechanism includes a sliding block, which is arranged in a square slide groove and is connected to a rotating shaft through a bearing, a spring member and a guide slide rod are connected to the sliding block, the other end of the spring member is connected to the groove wall of the square slide groove, and the guide slide rod slides out of the right groove wall of the square slide groove, a moving rope is connected to the sliding block, the free end of the moving rope slides through a curved pipe fixed on the left groove wall of the square slide groove and extends out of the lower surface of the detection platform, and a push block is provided at the free end of the moving rope, and the push block contacts the rejection mechanism.

[0009] Preferably, the rejection mechanism includes a cylinder member, and a hidden groove is provided on the upper surface of the detection table, the hidden groove is located on both sides of the moving cavity on the right side, the cylinder member is fixed in the hidden groove, and the end of the output rod of the cylinder member is connected with a vertical plate, the vertical plate is arranged in the hidden groove, and a push plate is connected to the vertical plate, the end of the push plate is a conical inclined surface, and an extrusion push block is fixed on the push plate, the extrusion push block is located on the left side of the push block, and a rejection plate is slidably arranged in the hidden groove, and a rejection oblique strip is arranged at the end of the rejection plate close to the moving cavity, and the rejection plate corresponds to the push plate.

[0010] Preferably, the rejection mechanism also includes a vertical support block, which is connected to the rejection plate and is sleeved on the guide slide rod through the cooperation of a washer and a nut, and the inner side of the vertical support block is connected to the outside of the right side groove wall of the square slide groove through a spring member.

[0011] Preferably, the push plate is arranged in sections, and the two sections of the push plate are connected by a bag-type plate, and the bag-type plate is connected with an air pipe, a supporting slider is arranged on the lower surface of the push plate close to a section of the moving cavity, a guiding long groove is opened in the hidden groove on the left side of the moving cavity, and a supporting slider is arranged in the guiding long groove.

[0012] Preferably, the bottom of the guide slot is insulated with a metal strip, the bottom of the support slider is insulated with an electromagnetic suction block, and the electromagnetic suction block is in contact with the metal strip; the connection between the vertical support block and the rejection plate is also insulated with an electromagnetic suction block, and the electromagnetic suction block is in contact with the metal strip insulated and installed on the rejection plate.

[0013] The present invention has the following beneficial effects: 1. The present invention arranges a winding mechanism in the detection box. The winding mechanism with the label tape slowly releases the label tape, while the idle winding mechanism slowly rewinds it, so that the label tape laid flat on the detection table drives the self-adhesive label to move directly under the colorimeter, thereby facilitating the color measurement of the self-adhesive label. The winding mechanism in the right cylindrical cavity continuously rewinds the detected label tape, so that it is not necessary to cut the rewound self-adhesive label before color difference detection, thereby not only improving the accuracy of color difference detection of the self-adhesive label, but also facilitating the normal use of the detected self-adhesive label without causing unnecessary waste.

[0014] 2. The present invention sets a rejection mechanism at the lower right side of the detection table, which enables the rejection bevel bar to peel off and reject unqualified self-adhesive labels from the label tape without affecting the normal winding of the label tape, and can also pull the self-adhesive label to be tested to the colorimeter to continue color measurement, so that when the rolled self-adhesive label is normally moved for color difference detection, the unqualified self-adhesive labels can be rejected from the label tape at the same time, so that the operator does not need to remove the rolled self-adhesive label that has been tested separately and then reject the unqualified labels, thereby further improving the efficiency of rolled self-adhesive label detection.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the embodiment disclosed in the present invention; Figure 2 It is a structural schematic diagram of a detection platform according to an embodiment of the present invention; Figure 3 It is a schematic diagram of the bottom structure of the detection box of the embodiment disclosed in the present invention; Figure 4 A diagram showing the matching state of the guide roller and the sliding tensioning mechanism according to the disclosed embodiment of the present invention; Figure 5 For the present invention Figure 4 A partial enlarged view of the middle part; Figure 6 It is a schematic structural diagram of the rejecting mechanism of the disclosed embodiment of the present invention.

[0018] In the figure: 1, detection box; 11, cylindrical cavity; 12, moving cavity; 13, hidden groove; 14, guide long groove; 2. Testing table; 21. Concave cavity; 22. Square slide; 3. Colorimeter; 4. winding mechanism; 41. shaft; 42. reel; 43. gasket; 44. sealing ring; 45. sealing strip; 46. limiting sleeve; 5. Guide roller; 6. Sliding tensioning mechanism; 61. Sliding block; 62. Spring member; 63. Guide slide rod; 64. Moving rope; 65. Pushing block; 7. Rejection mechanism; 71. Cylinder; 72. Vertical plate; 73. Push plate; 74. Extrusion push block; 75. Rejection plate; 76. Rejection oblique strip; 77. Vertical support block; 78. Capsule plate; 79. Support slider; 791. Metal strip; 792. Electromagnetic suction block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0021] See also Figure 1-Figure 6 As shown, the present invention is a device for color difference detection of self-adhesive labels, comprising a detection box 1, a detection table 2 is arranged in the detection box 1, and a colorimeter 3 is arranged on the top of the detection box 1, and the colorimeter 3 is used to measure the color of the self-adhesive label that is constantly moving on the detection table 2; two cylindrical cavities 11 are opened on the bottom of the box below the detection table 2, and a moving cavity 12 is opened at the top of each cylindrical cavity 11 inclined upward; a winding mechanism 4 is arranged in each of the cylindrical cavities 11, and the winding mechanism 4 is used to release and rewind the rolled self-adhesive label; Specifically, the present invention winds the label tape to be detected by color difference on the winding mechanism 4, and then installs the winding mechanism 4 into the columnar cavity 11 on the left, and installs an idle winding mechanism 4 in the columnar cavity 11 on the right, and then the free end of the wound label tape to be detected is passed upward through the moving cavity 12 by the traction belt and laid on the detection table 2, and the traction belt is wound on the idle winding mechanism 4, and then the control panel on the detection box 1 drives the servo motors fixed in the two columnar cavities 11 to work, so that the winding mechanism 4 with the label tape wound on it slowly releases the label tape, and the idle winding mechanism 4 is wound on the detection table 2. The winding mechanism 4 slowly reels the label tape laid on the testing table 2, so that the self-adhesive label moves directly under the colorimeter 3, thereby facilitating the color measurement of the self-adhesive label. The winding mechanism 4 in the right cylindrical cavity 11 will continuously reel the tested label tape, so that it is not necessary to cut the rolled self-adhesive label before color difference detection, thereby not only improving the accuracy of color difference detection of the self-adhesive label, but also facilitating the normal use of the tested self-adhesive label without causing unnecessary waste. The tested label tape will be directly taken out from the right cylindrical cavity 11.

[0022] In some disclosures, the winding mechanism 4 includes a shaft 41, which is rotatably mounted in the cylindrical cavity 11, and its inner end is connected to the fixed servo motor output shaft, and a reel 42 is sleeved on the shaft 41, and a wound label tape is installed on the reel 42, and a gasket sheet 43 for blocking the reel 42 is sleeved on the shaft 41, and a sealing ring 44 is provided at the cavity opening of the cylindrical cavity 11, and a sealing strip 45 is installed on the sealing ring 44 to seal to the cavity opening of the moving cavity 12, the sealing ring 44 is sleeved on the shaft 41, and a limiting sleeve 46 is provided on the inner side of the sealing ring 44, and the limiting sleeve 46 is sleeved on the shaft 41, and its inner end face is in conflict with the gasket sheet 43; Specifically, the wound label tape is fixedly mounted on the reel 42, and then the reel 42 is inserted into the shaft 41 of the columnar cavity 11, and then the free end of the label tape is moved upward through the movable cavity 12 to the detection table 2 through the traction belt, and the empty reel 42 is inserted into the shaft 41 of the right columnar cavity 11, and the gasket sheet 43 is sleeved on the two shafts 41 and fits with the outer end of the reel 42, and then the sealing ring 44 is inserted into the corresponding columnar cavity 11. At this time, the sealing strip 45 will be sealed and inserted into the cavity opening of the movable cavity 12, and the limiting sleeve 46 on the inner side of the sealing ring 44 will press the gasket sheet 43 tightly, so that the reel 42 can be safely and stably installed on the shaft 41, so that the wound label tape can be stably and safely released for color difference detection of the self-adhesive label, and the sealing ring 44 is removed from the cylindrical cavity 11, and the limiting sleeve 46 is separated from the tight contact with the gasket sheet 43, so that the label tape after detection can be removed and removed.

[0023] In some disclosures, the two ends of the detection platform 2 are provided with recessed cavities 21 inwardly, and a guide roller 5 is rotatably installed in each recessed cavity 21 through a rotating shaft, the depth of the recessed cavity 21 on the right side is greater than that of the recessed cavity 21 on the left side, and a square slide groove 22 is provided on the front and rear walls of the right recessed cavity 21, and a sliding tensioning mechanism 6 is provided in the square slide groove 22, and the sliding tensioning mechanism 6 is connected to the rotating shaft on the right side, and a rejection mechanism 7 is provided at the right end of the detection platform 2; Specifically, in order to improve the stability of the movement of the label tape on the upper surface of the detection platform 2 and reduce the probability of wrinkles, by rotating the guide roller 5 in the recessed cavity 21 opened at the left and right ends of the detection platform 2, the guide roller 5 can tension and guide the label tape moving on the detection platform 2, so that it can move smoothly on the detection platform 2, and the sliding tensioning mechanism 6 arranged in the right square slide groove 22 can tension and adjust the guide roller 5 on the right side, thereby facilitating the adjustment of the distance between the two guide rollers 5, so that the label tape can be tensioned and moved on the detection platform 2, reducing the probability of wrinkles when it moves, and the rejection mechanism 7 can reject the self-adhesive labels with unqualified colors from the label tape. At this time, the sliding tensioning mechanism 6 will follow the movement of the rejection mechanism 7 and synchronously relax the guide roller 5 on the right side to prevent the rejection mechanism 7 from breaking due to excessive tensioning force of the label tape when rejecting the labels with unqualified colors on the label tape, thereby affecting the normal color difference detection of the self-adhesive labels on the label tape.

[0024] In some disclosures, the sliding tensioning mechanism 6 includes a sliding block 61, which is arranged in the square slide groove 22, and the sliding block 61 is connected to the rotating shaft through a bearing, and the sliding block 61 is connected to a spring member 62 and a guide slide rod 63, the other end of the spring member 62 is connected to the groove wall of the square slide groove 22, and the guide slide rod 63 slides out of the right groove wall of the square slide groove 22, and the sliding block 61 is connected to a moving rope 64, and the free end of the moving rope 64 slides through the curved pipe fixed on the left groove wall of the square slide groove 22 and extends out of the lower surface of the detection platform 2, and the free end of the moving rope 64 is provided with a push block 65, and the push block 65 is in contact with the rejection mechanism 7; Specifically, the sliding block 61 is connected to the end of the rotating shaft through a bearing, and the sliding block 61 is slidably installed in the square slide groove 22. When the guide roller 5 needs to be tensioned and adjusted, the movement of the rejection mechanism 7 can push the pushing block 65 to move on the lower surface of the detection table 2 toward the end of the detection table 2. At this time, the pushing block 65 will pull the moving rope 64 to slide in the curved pipe. Since the moving rope 64 is connected to the left side wall of the sliding block 61 and is located in the spring member 62 connected to the left side wall of the sliding block 61, the moving rope 64 will pull the sliding block 61 to slide to the left in the square slide groove 22. At this time, the spring member 62 on the left side will be compressed, causing the guide roller 5 to slide in the larger concave cavity 21 on the right, reducing the size of the two guide rollers. The distance between the rollers 5 is used to realize the loose adjustment of the label tape, and when the sliding block 61 slides in the square slide groove 22, the guide slide rod 63 located on the right side of the sliding block 61 and slidingly extended will play the role of limiting guide to prevent the sliding block 61 from falling when sliding in the square slide groove 22; and when the rejection mechanism 7 is separated from the push of the push block 65, the elastic restoring force of the spring member 62 located on the left side will push the sliding block 61 to slide rightward in the square slide groove 22, thereby making the guide roller 5 on the right side slide rightward synchronously, thereby increasing the distance between the two guide rollers 5, so that it can adjust the tension of the sliding label tape, thereby improving the accuracy and efficiency of the color difference detection of the self-adhesive label.

[0025] In some disclosures, the rejection mechanism 7 includes a cylinder member 71, a hidden groove 13 is provided on the upper surface of the detection table 2, the hidden groove 13 is located on both sides of the moving cavity 12 on the right side, the cylinder member 71 is fixed in the hidden groove 13, and the end of the output rod of the cylinder member 71 is connected with a vertical plate 72, the vertical plate 72 is arranged in the hidden groove 13, and a push plate 73 is connected to the vertical plate 72, the end of the push plate 73 is a conical inclined surface, and an extrusion push block 74 is fixed on the push plate 73, the extrusion push block 74 is located on the left side of the push block 65, a rejection plate 75 is slidably provided in the hidden groove 13, and a rejection oblique strip 76 is inclined upwardly provided at the end of the rejection plate 75 close to the moving cavity 12, and the rejection plate 75 corresponds to the push plate 73; Specifically, the cylinder member 71, the vertical plate 72 and the push plate 73 are installed in the hidden groove 13 opened on the right side of the right moving cavity 12, and the rejection plate 75 is slidably installed in the hidden groove 13 opened on the left side of the right moving cavity 12. When it is necessary to reject the self-adhesive label with unqualified color detection, the output rod of the cylinder member 71 is controlled to extend, so that it drives the push plate 73 to slide toward the back of the label belt through the vertical plate 72, and the extrusion push blocks 74 fixed on the front and rear sides of the push plate 73 will push the push block 65 to slide synchronously, thereby moving The rope 64 pulls the sliding block 61 to slide in the square slide groove 22, so that the guide roller 5 slides toward the cavity wall of the recessed cavity 21, so that the guide roller 5 on the right side is separated from the tensioning process of the label belt, and then the conical inclined surface of the push plate 73 sliding to the right can push the label belt and the self-adhesive label to slide toward the rejection plate 75. When the label belt pushes the self-adhesive label to move to the rejection plate 75, and the upwardly inclined rejection strip 76 of the rejection plate 75 contacts the joint between the self-adhesive label and the label belt, at this time, as the right cylindrical cavity 11 is wound The continued winding of the mechanism 4 will cause the rejection bevel strip 76 to peel off and reject the unqualified self-adhesive label from the label tape without affecting the normal winding of the label tape, and can also pull the self-adhesive label to be tested to the colorimeter 3 to continue color measurement, so that when the rolled self-adhesive label is normally moved for color difference detection, the unqualified self-adhesive label can be synchronously rejected from the label tape, so that the operator does not need to remove the unqualified label after removing the rolled self-adhesive label that has been tested separately. Thereby, the efficiency of the detection of rolled self-adhesive labels can be further improved. After the unqualified self-adhesive labels are removed, the output rod of the cylinder 71 is recovered, so that it drives the push plate 73 to slide away from the label tape through the vertical plate 72, and disengages from the push of the label tape. At this time, the squeezing push block 74 disengages from the push of the push block 65, and the guide roller 5 returns to its initial position, so that the guide roller 5 continues to guide and tension the subsequently pulled-out moving label tape, so that it will not interfere with the normal color difference detection of the self-adhesive label on the label tape.

[0026] In some disclosures, the rejection mechanism 7 further includes a vertical support block 77, which is connected to the rejection plate 75, and the vertical support block 77 is sleeved on the guide slide bar 63 through the cooperation of a washer and a nut, and the inner side of the vertical support block 77 is connected to the outside of the right groove wall of the square slide groove 22 through a spring member 62; Specifically, in order to prevent the push plate 73 from pushing the label belt to the right too far, causing the label belt to break, the present invention connects the rejection plate 75 to the guide slide bar 63 through the cooperation of the vertical support block 77 and the spring member 62. Therefore, when the slide block 61 slides to the left in the square slide groove 22, the guide slide bar 63 will slide to the left synchronously, and then the vertical support block 77 will drive the rejection plate 75 to slide in the direction of the label belt. At this time, the spring member 62 on the guide slide bar 63 will be in a compressed state, and the sliding distance of the rejection plate 75 will be smaller than the sliding distance of the push plate 73, thereby making the push plate 73 first pushes the label belt to form a cone shape and contact the removal bevel strip 76, so that the removal bevel strip 76 can accurately remove the unqualified self-adhesive label from the marking belt. When the push plate 73 slides back and resets, the guide slide bar 63 extends to the right and synchronously drives the removal plate 75 and the removal bevel strip 76 to slide to the right through the vertical support block 77. At this time, the spring member 62 on the guide rod will be in a recovery state, so that the self-adhesive label after removal can be separated from the movable cavity 12, thereby preventing the removed self-adhesive labels from gathering at the cavity mouth of the movable cavity 12 and affecting the normal operation and movement of the subsequent label belt.

[0027] In some disclosures, the push plate 73 is provided in sections, and two sections of the push plate 73 are connected by a sac-shaped plate 78, and the sac-shaped plate 78 is connected with an air pipe, and a support slider 79 is provided on the lower surface of the push plate 73 close to the moving cavity 12, and a guide long groove 14 is opened in the hidden groove 13 located on the left side of the moving cavity 12, and a support slider 79 is provided in the guide long groove 14; Specifically, in order to facilitate the extension of the output rod of the cylinder body, the push block 65 is pushed to slide by the extrusion push block 74, and the position of the guide roller 5 is adjusted separately. At this time, the air guide pipe is controlled to extract the gas in the bag plate 78, so that the bag plate 78 is in a softened state, and the support slider 79 will be in a fixed state in the guide slot 14. Then, when the output rod of the cylinder body is extended, it pushes the left half of the push plate 73 to slide to the right. Since the bag plate 78 is in a softened state at this time, it is convenient for the left half of the push plate 73 to slide separately, and the right half of the push plate 73 is in a fixed state, so that the extrusion push block 74 pushes the push block 65 to slide, so that the guide roller 5 is in a separate adjustment state, and then the distance between the two guide rollers 5 can be adjusted, so that the label belt can slide safely and stably on the detection table 2.

[0028] In some disclosures, the bottom of the guide slot 14 is insulated with a metal strip 791, the bottom of the support slider 79 is insulated with an electromagnetic suction block 792, and the electromagnetic suction block 792 is in contact with the metal strip 791; the vertical support block 77 and the reject plate 75 are also insulated with an electromagnetic suction block 792 at the connection, and the electromagnetic suction block 792 is in contact with the metal strip 791 insulated and installed on the reject plate 75; Specifically, when it is necessary to fix the right half of the push plate 73, the electromagnetic suction block 792 at the bottom of the supporting slider 79 is energized to make it adsorbed onto the metal strip 791, and the electromagnetic suction block 792 on the side of the vertical support block 77 is de-energized to make it separate from the adsorption and fixation of the metal strip 791 insulated from the front and rear sides of the rejection plate 75. Then, the output rod of the cylinder part 71 is extended, which will only drive the push plate 73 of the left half to slide, and the sliding of the guide slide bar 63 will only drive the vertical support block 77 to slide, and will not drive the rejection plate 75 to slide, so as to facilitate the adjustment of the position of the guide roller 5 alone. When the push plate 73 and the rejection plate 75 need to be moved synchronously, When sliding and rejecting unqualified self-adhesive labels, the left half of the push plate 73 is controlled to return to the initial position, and gas is introduced into the bag plate 78 through the air pipe. At this time, the right half of the push plate 73 continues to be in a fixed state, so that the bag plate 78 is in an inflated and hard state, and then the electromagnetic suction block 792 at the bottom of the supporting slider 79 is controlled to be powered off, so that the supporting slider 79 can slide in the guide long groove 14, so that it can slide and support the push plate 73, and the electromagnetic suction block 792 on the vertical support block 77 is energized to fix it on the rejection plate 75, so that it is convenient for the push plate 73 and the rejection plate 75 to slide and reject unqualified self-adhesive labels.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for color difference detection of self-adhesive labels, characterized in that: It comprises a testing box (1), wherein a testing platform (2) is arranged in the testing box (1), and a colorimeter (3) is arranged on the top of the testing box (1), and the colorimeter (3) is used to measure the color of the self-adhesive label that is continuously moving on the testing platform (2); Two cylindrical cavities (11) are provided on the bottom of the box below the detection table (2), and a movable cavity (12) is provided on the top of each cylindrical cavity (11) in an inclined manner upward; A winding mechanism (4) is provided in each of the cylindrical cavities (11), and the winding mechanism (4) is used for releasing and rewinding a rolled self-adhesive label.

2. The device for color difference detection of self-adhesive labels according to claim 1, characterized in that: The winding mechanism (4) comprises a shaft (41), the shaft (41) being rotatably mounted in the cylindrical cavity (11), and the inner end of the shaft (41) being connected to the output shaft of a fixed servo motor, and a reel (42) being sleeved on the shaft (41), and a wound label tape being mounted on the reel (42), and a gasket (43) for blocking the reel (42) being sleeved on the shaft (41), a sealing ring (44) being provided at the cavity opening of the cylindrical cavity (11), and a sealing strip (45) being provided on the sealing ring (44) for sealing the cavity opening of the movable cavity (12), the sealing ring (44) being sleeved on the shaft (41), and a limiting sleeve (46) being provided on the inner side surface of the sealing ring (44), the limiting sleeve (46) being sleeved on the shaft (41), and the inner end surface of the limiting sleeve being in contact with the gasket (43).

3. The device for color difference detection of self-adhesive labels according to claim 1, characterized in that: The detection platform (2) has recessed cavities (21) formed inwardly at both ends, and a guide roller (5) is rotatably mounted in each recessed cavity (21) via a rotating shaft. The depth of the recessed cavity (21) on the right side is greater than that of the recessed cavity (21) on the left side, and a square slide groove (22) is formed on the front and rear walls of the recessed cavity (21) on the right side. A sliding tensioning mechanism (6) is arranged in the square slide groove (22), and the sliding tensioning mechanism (6) is connected to the rotating shaft on the right side. A rejection mechanism (7) is arranged at the right end of the detection platform (2).

4. The device for color difference detection of self-adhesive labels according to claim 3, characterized in that: The sliding tensioning mechanism (6) comprises a sliding block (61), wherein the sliding block (61) is arranged in the square sliding groove (22) and is connected to the rotating shaft via a bearing. A spring member (62) and a guide sliding rod (63) are connected to the sliding block (61). The other end of the spring member (62) is connected to the groove wall of the square sliding groove (22), and the guide sliding rod (63) slides out of the right groove wall of the square sliding groove (22). A moving rope (64) is connected to the sliding block (61), and the free end of the moving rope (64) slides through a curved pipe fixed to the left groove wall of the square sliding groove (22) and extends out of the lower surface of the detection platform (2). A push block (65) is arranged at the free end of the moving rope (64), and the push block (65) contacts the rejection mechanism (7).

5. The device for color difference detection of self-adhesive labels according to claim 4, characterized in that: The rejection mechanism (7) comprises a cylinder member (71). A hidden groove (13) is provided on the upper surface of the detection table (2). The hidden groove (13) is located on both sides of the movable cavity (12) on the right side. The cylinder member (71) is fixed in the hidden groove (13). The end of the output rod of the cylinder member (71) is connected to a vertical plate (72). The vertical plate (72) is arranged in the hidden groove (13). A push plate (73) is connected to the vertical plate (72). The end of the push plate (73) is arranged in a conical inclined surface. An extrusion push block (74) is fixed to the push plate (73). The extrusion push block (74) is located on the left side of the push block (65). A rejection plate (75) is slidably arranged in the hidden groove (13). The end of the rejection plate (75) close to the movable cavity (12) is inclined upwardly provided with a rejection oblique strip (76). The rejection plate (75) corresponds to the push plate (73).

6. The device for color difference detection of self-adhesive labels according to claim 5, characterized in that: The rejection mechanism (7) further comprises a vertical support block (77), the vertical support block (77) being connected to the rejection plate (75), and the vertical support block (77) being sleeved on the guide slide bar (63) through the cooperation of a washer and a nut, and the inner side surface of the vertical support block (77) being connected to the outside of the right groove wall of the square slide groove (22) through a spring member (62).

7. The device for color difference detection of self-adhesive labels according to claim 5, characterized in that: The push plate (73) is arranged in sections, and two sections of the push plate (73) are connected by a sac-shaped plate (78), and the sac-shaped plate (78) is connected to an air pipe. A support slider (79) is arranged on the lower surface of the push plate (73) close to the moving cavity (12), and a guide long groove (14) is opened in the hidden groove (13) located on the left side of the moving cavity (12), and the support slider (79) is arranged in the guide long groove (14).

8. The device for color difference detection of self-adhesive labels according to claim 7, characterized in that: The bottom of the guide slot (14) is insulated with a metal strip (791), the bottom of the support slider (79) is insulated with an electromagnetic suction block (792), and the electromagnetic suction block (792) is in contact with the metal strip (791); the connection between the vertical support block (77) and the rejection plate (75) is also insulated with an electromagnetic suction block (792), and the electromagnetic suction block (792) is in contact with the metal strip (791) insulated and installed on the rejection plate (75).

Images