UV curing device for self-adhesive label printing production

Abstract

The invention relates to the technical field of self-adhesive label printing, and particularly discloses a UV curing device for self-adhesive label printing production, the UV curing device comprises a printing table, a label body, a gluing mechanism and an ultraviolet curing device, the label body is provided with a gluing area and an easy-to-tear area; the label body moves along the conveying roller, and the lower end face of the label body located in the printing table is located on the upper side of the printing bottom plate. The gluing mechanism is installed on the printing table, located on the upper side of the label body and used for spraying glue to a gluing area in the label body; a glue stroking and scraping mechanism is installed on the printing table and used for evenly smearing glue sprayed by the gluing mechanism on the gluing area and scraping away the glue in the easy-to-tear area. The label body is divided into the gluing area and the easy-to-tear area, the gluing mechanism only smears glue on the gluing area, the area where the glue needs to be smeared is reduced, and therefore the input of the glue is reduced, and the cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of self-adhesive label printing, and in particular relates to a UV curing device for self-adhesive label printing production. Background Art

[0002] During the packaging and transportation of clothing or other goods, self-adhesive labels need to be affixed to the outer surface of the packaging bag to distinguish the goods and facilitate packaging and transportation personnel to understand the information of clothing or other goods. Self-adhesive labels are usually produced in large quantities and automatically.

[0003] Commonly used self-adhesive labels are multiple labels attached to a smooth base paper, which can be torn off when in use. In the process of mass production of self-adhesive labels, multiple groups of labels are produced simultaneously (that is, there are multiple horizontally distributed long strip labels on the same base paper, and each long strip label is composed of multiple labels). After the label paper and the base paper are glued together, a gap needs to be cut on the label paper to separate the labels into multiple finished labels. When in use, the corresponding labels can be torn off from the gap.

[0004] At present, in the process of self-adhesive label production, there are the following problems: first, before using the UV curing device, glue needs to be applied on the label paper, and currently the entire outer surface of the label paper is usually coated with glue. When the label paper is subsequently separated, the waste material cut off from the label paper (i.e. the easy-to-tear area) is also adhered to glue, resulting in a waste of this part of the glue, resulting in a lot of useless costs; Secondly, self-adhesive labels are usually transported by transport rollers. During the transportation process, the self-adhesive labels are often offset due to factors such as the shaking of the transport rollers. Although the correction mechanism can be used to avoid large shaking, a small shaking of the self-adhesive label will still cause glue leakage during the gluing process. The self-adhesive label with glue leakage is not firm and easy to loosen when adhered to the clothing packaging bag. Summary of the invention

[0005] The object of the present invention is to provide a UV curing device for printing and producing self-adhesive labels to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution, including a printing table, a label body, a gluing mechanism, and an ultraviolet curing device, wherein the label body is provided with a gluing area and an easy-to-tear area; The printing table is provided with a plurality of conveying rollers, the label body moves along the conveying rollers, and the lower end surface of the label body located in the printing table is located on the upper side of the printing base plate; The gluing mechanism is installed on the printing table and located on the upper side of the label body, and is used to spray glue to the gluing area in the label body; The printing table is provided with a glue rubbing and scraping mechanism, which is used to evenly spread the glue sprayed by the glue coating mechanism on the glue coating area and scrape away the glue in the easy-to-tear area; The label body includes a sunken anti-deviation area; A glue removing and filling mechanism is installed in the area between the glue rubbing and scraping mechanism and the ultraviolet curing device on the printing base plate; A glue layer height detection mechanism is installed on the printing table.

[0007] Preferably, the glue stroking and scraping mechanism includes a glue stroking mechanism and a glue scraping mechanism.

[0008] Preferably, the glue-rubbing mechanism includes a plurality of glue-rubbing plates, which are obliquely inserted into the fixed oblique frame, the glue-rubbing plates are located on the upper side of the label body, and the semicircular portion arranged at the bottom of the glue-rubbing plates is against the upper surface of the glue layer, and the glue-rubbing plates are inclined from top to bottom in a direction away from the starting point of the label body, the glue-rubbing plates are slidably connected to the adjustment grooves in the fixed oblique frame, an intermediate plate is fixedly installed in the fixed oblique frame, the intermediate plate is inserted into the groove in the glue-rubbing plates, and the two are slidably connected, the glue-rubbing plates are detachably connected to the fixed oblique frame by bolts, and a flattening plate is fixedly installed on the fixed oblique frame, the flattening plate includes a horizontal plate and an oblique plate, the oblique plate is fitted with the outer wall of the fixed oblique frame, the horizontal plate is smoothly connected to the oblique plate, and the lower end surface of the horizontal plate is flush with the upper end surface of the glue layer.

[0009] Preferably, the glue scraping mechanism includes a plurality of first glue scraping frames, the plurality of first glue scraping frames correspond one to one to the easy-to-tear areas, and the bottom of the first glue scraping frame is against the label substrate in the label body, and a glue inlet flare is provided at the bottom of the first glue scraping frame, the glue inlet flare is wide at the bottom and narrow at the top, and the widest part is the same as the width of the easy-to-tear area; a substrate pressing plate is installed on the first glue scraping frame, and the lower end surface of the substrate pressing plate is against the upper end surface of the label substrate in the label body.

[0010] Preferably, a first crescent guide plate is fixedly installed between adjacent first scraper frames, a first conveying blade is installed in the first crescent guide plate, the blades in the first conveying blade are against the end surface of the bottom of the first crescent guide plate, one end of the first conveying blade is connected to a conveying motor for driving its rotation, and the other end is inserted into the first waste rubber storage box.

[0011] Preferably, the two side edges of the label body in the sinking anti-deviation area are arc-shapedly recessed downward, and the two side edges are parallel to the moving direction of the label body. An anti-deviation sinking groove and a label lifting groove are provided at the position of the printing base plate corresponding to the sinking anti-deviation area, and the label lifting groove is inclined from bottom to top along the moving direction of the label body.

[0012] Preferably, the glue removal and glue repairing mechanism includes a label sinking guide plate, a glue removal mechanism, and a glue repairing mechanism; the glue removal and glue repairing mechanism is installed at the sinking anti-deviation area, the label sinking guide plate includes an upward top plate, the upward top plate is fixedly connected to the plastic top plate, an arc groove is provided in the plastic top plate, and the plastic top plate is fixedly connected to the plastic side plate.

[0013] Preferably, the glue removal mechanism includes a plurality of second glue scraping frames, a second crescent guide plate is installed between adjacent second glue scraping frames, a second conveying blade is installed in the second crescent guide plate, and the other end of the second conveying blade is inserted into a second waste glue storage box; the glue filling mechanism includes a glue filling box and a box cover, the box cover is connected to a glue inlet pipe, the glue filling box is connected to a plurality of glue filling pipes, the glue filling pipes are inserted into a glue filling shaping frame, a glue filling groove is provided in the glue filling shaping frame, and the width of the glue filling groove is the same as the width of the glue coating area.

[0014] Preferably, a glue filling pipe sealing mechanism is installed in the glue filling box, and the glue filling pipe sealing mechanism includes at least two states including a closed state and an open state. In the open state, the glue filling box is connected to the glue filling pipe, and in the closed state, the channel between the glue filling box and the glue filling pipe is blocked.

[0015] Preferably, the glue filling pipe sealing mechanism includes a sealing plate and a movable plate. The sealing plates correspond to the glue filling pipes one by one. Two movable plates are provided, and each movable plate is connected to a plurality of sealing plates. A sealing groove is provided at the position of the glue filling box corresponding to the sealing plate. The size of the sealing groove is larger than the size of the glue filling pipe. The movable plate is slidably connected to the sliding groove in the glue filling box. The movable plate is rotatably connected to the pull-out plate. The other end of the pull-out plate is rotatably installed at a position other than the center of the circular plate. The output shaft of the driving motor is installed at the center of the circular plate. The upper end surface of the movable plate abuts against the lower end surface of the guide top plate. An exhaust pipe is penetrated in the sealing plate. The other end of the exhaust pipe passes through the guide top plate and is connected to the air pump located on the guide top plate. The other end of the air pump is connected to the external air.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention divides the label body into a glue coating area and an easy-tear area. The easy-tear area is the location of the waste material that needs to be cut off later. The glue coating mechanism only applies glue in the glue coating area, which reduces the area required for glue coating, reduces the investment in glue, and reduces the cost; Second, the present invention is provided with a glue smoothing and scraping mechanism and a glue removing and filling mechanism on the upper side of the label body, which can evenly smooth the glue sprayed by the glue coating mechanism and scrape away the glue in the easy-to-tear area, so that the glue layer is evenly formed in the glue coating area of ​​the label body. When the label is cut and separated, the easy-to-tear area is cut off horizontally and the label is cut off vertically. When the label is separated, the cut waste (i.e., the waste paper in the easy-to-tear area) is not smeared with glue, which reduces the loss of glue; 3. The present invention sets a sinking anti-deviation area on the label body, and the front and rear sides of the label body are squeezed downward. The two sides of the label body can move straight under the limitation of the squeezing force. The glue removal and glue filling mechanism set in this area can fill the glue leakage points caused by the deviation of the label body, and further clean the easy-to-tear area, so as to form a precise glue layer on the label body. The glue layer on the back of the self-adhesive label is uniform and complete, and it is relatively firm when pasted later; Fourth, the present invention sets a glue filling pipe sealing mechanism inside the glue filling box in the glue removal and glue filling mechanism, which has two working states, namely a closed state and an open state. In the closed state, it can prevent the external air from contacting the glue inside the glue filling box to prevent the glue inside from being damaged. The exhaust pipe inside can speed up the discharge speed of the residual glue in the glue filling pipe, so that the glue filling pipe can be quickly emptied, and the glue can flow smoothly when the device is started again; 5. The present invention sets a glue layer height detection mechanism at the end of the printing table to check the height of the glue layer after the ultraviolet curing device dries the glue layer. The data is used to determine whether the cured glue layer meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the internal structure of the printing table in the present invention; Figure 3 It is a connection diagram of the label body and the glue scraping mechanism in the present invention; Figure 4 It is a schematic diagram of the structure of the label body in the present invention; Figure 5 This is one of the disassembled diagrams of the glue stroking and scraping mechanism of the present invention; Figure 6 The second disassembled diagram of the glue rubbing and scraping mechanism of the present invention; Figure 7 It is a structural schematic diagram of the sinking anti-deviation area and the printing base plate in the area in the present invention; Figure 8 It is a structural schematic diagram of the glue removing and glue filling mechanism in the present invention; Fig. 9 It is a connection diagram of the label sinking guide plate and the glue removal mechanism in the present invention; Fig.10 It is a connection diagram of the glue filling mechanism and the glue filling pipeline sealing mechanism in the present invention; Fig.11 For the present invention Fig.10 Bottom view of Fig.12 This is one of the disassembled diagrams of the glue filling mechanism and the glue filling pipe sealing mechanism in the present invention; Fig.13The second disassembled diagram of the glue filling mechanism and the glue filling pipe sealing mechanism in the present invention; Fig.14 It is a structural schematic diagram of the blocking plate and the moving plate in the present invention.

[0018] Middle: 1. Printing table; 2. Label body; 21. Gluing area; 22. Easy-tear area; 23. Anti-deviation area; 3. Gluing mechanism; 4. UV curing device; 5. Conveying roller; 6. Printing base; 61. Anti-deviation sinking groove; 62. Label lifting groove; 7. Glue scraping mechanism; 71. Glue scraping mechanism; 7101. Glue scraping plate; 7102. Fixed oblique frame; 7103. Middle plate; 7104. Semicircular part; 7105. Flattening plate; 72. Glue scraping mechanism; 7201. First glue scraping frame; 7202. Glue inlet flaring; 7203. Base plate pressing plate; 7204. First crescent guide plate; 7205. First conveying blade; 7206. First waste glue storage box; 8. Glue removal and glue filling mechanism; 81. Label sinking guide plate; 8101. Lifting top plate; 8102. Molding top plate; 8103. Molding side plate; 82. Glue removal mechanism; 8201. Second glue scraping frame; 8202. Second crescent guide plate; 8203. Second conveying blade; 83. Glue filling mechanism; 8301. Glue filling box; 8302. Glue filling pipeline; 8303. Glue filling shaping frame; 8304. Sealing groove; 8305. Sliding groove; 84. Sealing mechanism for glue filling pipe; 8401. Sealing plate; 8402. Moving plate; 8403. Pull-out plate; 8404. Round plate; 8405. Driving motor; 8406. Guide top plate; 8407. Exhaust pipe; 8408. Air pump; 9. Adhesive layer height detection mechanism; 901. Detection frame; 902. Height detection mechanism. 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] Reference Figure 1-Figure 2, a UV curing device for printing and producing self-adhesive labels, comprising a printing table 1, a label body 2, a gluing mechanism 3, and an ultraviolet curing device 4, wherein a gluing area 21 and an easy-to-tear area 22 are arranged on the label body 2, and specifically, the gluing area 21 and the easy-to-tear area 22 are arranged on a label substrate, product information of clothing is printed on the label substrate, glue is applied to the gluing area 21 thereon, the glue is dried by the ultraviolet curing device 4, and then it is combined with the label backing paper, and then the easy-to-tear area 22 of the label substrate needs to be cut, so that the label substrate on the label backing paper is divided into a plurality of clothing labels of the same size, when in use, the corresponding clothing label is torn off from the easy-to-tear area 22, and then the label substrate is adhered to the packaging bag of the clothing through the glue at the gluing area 21, so as to facilitate the distinction of the types of clothing in the subsequent delivery process; A plurality of conveying rollers 5 are installed on the printing table 1, and the label body 2 moves along the conveying rollers 5, and the lower end surface of the label body 2 located in the printing table 1 is located on the upper side of the printing base plate 6. A plurality of conveying rollers 5 are provided, and one end of the label body 2 is connected to the unwinding machine, and the other end is connected to the winding machine, and the two cooperate with each other to pull the label body 2 to move. The conveying rollers 5 are arranged between the unwinding machine and the winding machine, and are used to provide support and strength support for the movement of the label body 2; UV curing device is a device that uses ultraviolet radiation to cure (i.e., harden or cross-link) coatings, inks or adhesives, that is, the ultraviolet curing device 4 in the figure. It is usually used in the printing industry and the coating industry. The high energy of ultraviolet rays can quickly cure and dry the coating, thereby increasing production efficiency and improving the quality of the final product. UV curing technology is widely used in many applications due to its advantages such as fast curing, energy saving and environmental protection; The gluing mechanism 3 is installed on the printing table 1 and is located on the upper side of the label body 2, and is used to spray glue to the gluing area 21 in the label body 2; Figure 3 As shown, the glue coating mechanism 3 can spray glue in the middle of the glue coating area 21. The glue is not evenly spread during spraying and needs to be smoothed by the subsequent glue scraping mechanism 7. Further, such as Figure 3-6 As shown, in order to evenly spread the glue sprayed by the glue coating mechanism 3 on the glue coating area 21, a glue rubbing and scraping mechanism 7 is installed on the printing table 1, and the glue rubbing and scraping mechanism 7 is used to evenly spread the glue sprayed by the glue coating mechanism 3 on the glue coating area 21 and scrape away the glue in the easy-to-tear area 22; Specifically, the glue rubbing and scraping mechanism 7 includes a glue rubbing mechanism 71 and a glue scraping mechanism 72. The glue rubbing mechanism 71 is used to evenly spread the glue sprayed by the glue coating mechanism 3 on the glue coating area 21, and the glue scraping mechanism 72 is used to scrape away the glue flowing to the easy-to-tear area 22. It should be noted that the glue-smoothing mechanism 71 includes a plurality of glue-smoothing plates 7101, which are obliquely inserted into the fixed oblique frame 7102, and the glue-smoothing plates 7101 are located on the upper side of the label body 2, and the semicircular portion 7104 provided at the bottom of the glue-smoothing plates 7101 is against the upper surface of the glue layer, and the glue-smoothing plates 7101 are inclined from top to bottom in a direction away from the starting point of the label body 2, such as Figure 2 As shown, the starting point of the label body 2 is the left side and the end point is the right side. The glue-smoothing plate 7101 forms an acute angle structure with the label body 2, which can gradually smooth the glue applied by the glue-applying mechanism 3 and form a glue layer in the glue-applying area 21. The glue-smoothing plate 7101 is slidably connected with the adjustment groove in the fixed oblique frame 7102. An intermediate plate 7103 is fixedly installed in the fixed oblique frame 7102. The intermediate plate 7103 is inserted into the groove in the glue-smoothing plate 7101, and the two are slidably connected. The glue-smoothing plate 7101 The fixed oblique frame 7102 is detachably connected with the flattening plate 7105 by bolts, and the fixed oblique frame 7102 is fixedly installed with a flattening plate 7105, which includes a horizontal plate and an oblique plate. The oblique plate fits the outer wall of the fixed oblique frame 7102, and the horizontal plate is smoothly connected with the oblique plate. The lower end surface of the horizontal plate is flush with the upper end surface of the glue layer. The glue-smoothing plate 7101 and the flattening plate 7105 correspond to the glue-spreading area 21 one by one. There are four glue-spreading areas 21, so there are four glue-smoothing plates 7101 and flattening plates 7105. It should be noted that the glue scraping mechanism 72 includes a plurality of first glue scraping frames 7201, and the plurality of first glue scraping frames 7201 correspond to the easy-tear areas 22 one by one, and the bottom of the first glue scraping frame 7201 is against the label substrate in the label body 2, and a glue inlet flare 7202 is provided at the bottom of the first glue scraping frame 7201, and the glue inlet flare 7202 is wide at the bottom and narrow at the top, and the wide part is the same as the width of the easy-tear area 22. During the movement of the label body 2, the excess glue on the easy-tear area 22 will be blocked by the first glue scraping frame 7201. As it continues to move, the accumulated glue will move upward along the first glue scraping frame 7201, and a substrate pressing plate 7203 is installed on the first glue scraping frame 7201. The lower end surface of the plate 7203 is against the upper end surface of the label substrate in the label body, and the two are only in contact, and the extrusion force between the two is small, which has little effect on the movement of the label body 2. This is also the reason why the glue-stroking and scraping mechanism 7 and the glue-removing and glue-repairing mechanism 8 are set. The two are separated, and the formation of the entire glue layer is divided into two parts. The front side is roughly smoothed, and the subsequent fine processing, the glue-removing and glue-repairing mechanism 8 needs to be in the sinking anti-deviation area 23. This area needs to have a large pressure on the label body 2 to avoid its shaking in the front and rear directions. This area should not be too large, so the glue-stroking and scraping mechanism 7 is set on the outside of the sinking anti-deviation area 23, and the glue-removing and glue-repairing mechanism 8 is set inside the sinking anti-deviation area 23; In order to collect the glue scraped away by the first scraping glue frame 7201, a first crescent guide plate 7204 is fixedly installed between adjacent first scraping glue frames 7201. It should be noted that the first crescent guide plate 7204 is in the shape of a crescent with an area larger than a semicircle, a notched ring shape, and a first conveying blade 7205 is installed in the first crescent guide plate 7204. The blades in the first conveying blade 7205 are against the end surface of the bottom of the first crescent guide plate 7204. One end of the first conveying blade 7205 is connected to a conveying motor for driving the rotation thereof, and the other end is inserted into the first waste glue storage box 7206. The label body 2 is transported by the conveying roller 5. During the transportation process, the shaking of the conveying roller 5 or other components will cause the label body 2 to deviate in the front-to-back direction. The glue scraping mechanism 7 is in a fixed position. During the shaking of the label body 2, glue leakage may occur in the glue-coating area 21 and glue may be present in the easy-to-tear area 22. Furthermore, in order to solve the above problem, a glue removing and filling mechanism 8 is installed on the printing base plate 6 in the area between the glue scraping mechanism 7 and the ultraviolet curing device 4. Figure 8 As shown, the glue removal and glue filling mechanism 8 includes a label sinking guide plate 81, a glue removal mechanism 82, and a glue filling mechanism 83; Furthermore, the label body 2 includes a sinking anti-deviation area 23, and the two side edges of the label body 2 in the sinking anti-deviation area 23 are arc-shapedly recessed downward, and the two side edges are parallel to the moving direction of the label body 2. An anti-deviation sinking groove 61 and a label upper groove 62 are provided at the position corresponding to the sinking anti-deviation area 23 on the printing base plate 6. The label upper groove 62 is inclined from bottom to top along the moving direction of the label body 2, such as Figure 7 As shown, after the label body 2 enters the anti-deviation area 23, the front and rear sides of the label body 2 are pressed downward into the anti-deviation sinking groove 61, and the front and rear sides of the label body 2 are subjected to the pressure of the label sinking guide plate 81. The pressure allows the label body 2 to keep moving in a flush manner in the anti-deviation area 23 until it reaches the position on the right side leaving the anti-deviation area 23. The label upper lifting groove 62 inclined upward allows the label body 2 to gradually reset upward until it is flush with the upper surface of the printing base plate 6. In order to evenly apply glue to the glue coating area 21, the glue removing and filling mechanism 8 needs to be installed in the position of the sinking anti-deviation area 23. Specifically, the label sinking guide plate 81 includes an upward top plate 8101, and the upward top plate 8101 is fixedly connected to the plastic top plate 8102. The plastic top plate 8102 is provided with an arc groove. When the label body 2 enters the sinking anti-deviation area 23, it is arc-shaped and recessed downward. The arc groove is provided to make the plastic top plate 8102 fit the label body 2 as closely as possible, so that the extrusion area at both ends of the label body 2 is larger, allowing the label body 2 to move straight, such as Figure 7As shown, the tag body 2 moves to the right to the position before the anti-deviation area 23 is lowered. At this time, the upward top plate 8101 is located on the upper side of the position, and the upward top plate 8101 plays a preliminary guiding role. As the tag body 2 moves, the two side edges of the tag body 2 are gradually pressed by the upward top plate 8101, and the two side edges are squeezed into the anti-deviation sinking groove 61, forming the anti-deviation area 23. The molding top plate 8102 is fixedly connected to the molding side plate 8103; the molding side plate 8103 is located at the side position of the tag body 2 at the anti-deviation area 23. Specifically, Fig. 9 As shown, the glue removal mechanism 82 includes a plurality of second scraping frames 8201, and the second scraping frames 8201 are provided with three, three easy-tear areas 22 between the four glue coating areas 21, which correspond to the second scraping frames 8201 one by one, and second crescent guide plates 8202 are installed between adjacent second scraping frames 8201, and second conveying blades 8203 are installed in the second crescent guide plates 8202, and the other end of the second conveying blades 8203 is inserted into the second waste glue storage box. The structure of the main body in the glue removal mechanism 82 is the same as that of the scraping mechanism 72. The structures of the two are the same, and the only difference between the two is the number and position of the scraping frames. This is because after the front and rear ends of the label body 2 are pressed by the label sinking guide plate 81, the glue on them is also blocked by the label sinking guide plate 81. The label body 2 is concave in an arc shape on the lower side. The glue blocked by the label sinking guide plate 81 will flow along the arc surface to the corresponding position of the printing base plate 6. The two easy-to-tear areas 22 at both ends do not need to be scraped by the second scraping frame 8201; the glue removal mechanism 82 is used to scrape away the excess glue in the easy-to-tear area 22; More specifically, Figure 10-11 As shown, the glue filling mechanism 83 includes a glue filling box 8301 and a box cover. The box cover is connected to a glue feeding pipe. The glue feeding pipe can feed external glue into the glue filling box 8301. The glue filling box 8301 is connected to multiple glue filling pipes 8302. The glue filling pipes 8302 are inserted into a glue filling shaping frame 8303. A glue filling groove is arranged in the glue filling shaping frame 8303. The width of the glue filling groove is the same as the width of the glue coating area 21. When filling glue, the glue filling pipe 8302 is filled with glue. In the process of moving the label body 2, the gaps in the glue coating area 21 will be filled with the glue in the glue filling pipe 8302. The glue filling groove is used to play a limiting role, so that the glue can be used to fill the gaps in the glue coating area 21. Fig.11 As shown, each glue filling box 8301 is provided with two glue filling pipes 8302 corresponding to each glue application area 21, and glue filling is performed twice, which is more comprehensive than single glue filling; In order to allow the glue to be quickly filled into the glue application area 21, the glue filling pipe 8302 needs to be filled with glue, and its bottom exists in the space in contact with the glue application area 21. When the device stops running, air will enter the glue filling box 8301 from the bottom of the glue filling pipe 8302. Dust and other impurities in the air mix with the glue, which will cause the glue to be damaged. In order to avoid a large amount of damage to the glue in the glue filling box 8301, a glue filling pipe sealing mechanism 84 needs to be installed in the glue filling box 8301. The glue filling pipe sealing mechanism 84 includes at least two states including a closed state and an open state. In the open state, the glue filling box 8301 is connected to the glue filling pipe 8302. In the closed state, the passage between the glue filling box 8301 and the glue filling pipe 8302 is blocked, and the two are not connected. Gas will not enter the glue filling box 8301, and will not cause the glue in the glue filling box 8301 to be damaged. Specifically, Figure 12-14 As shown, the glue filling pipeline sealing mechanism 84 includes a blocking plate 8401 and a moving plate 8402. The blocking plate 8401 corresponds to the glue filling pipeline 8302 one by one. Two moving plates 8402 are provided, and each moving plate 8402 is connected to a plurality of blocking plates 8401. A sealing groove 8304 is provided at a position of the glue filling box 8301 corresponding to the blocking plate 8401. The size of the sealing groove 8304 is larger than the size of the glue filling pipeline 8302. The moving plate 8402 is slidably connected to the slide groove 8305 in the glue filling box 8301. The moving plate 8402 is rotatably connected to the pull-out plate 8403. The other end of the pull-out plate 8403 is rotatably installed at a position other than the center of the circular plate 8404. The output shaft of the driving motor 8405 is installed at the center of the circular plate 8404. More specifically, the upper end surface of the movable plate 8402 is against the lower end surface of the guide top plate 8406, and an exhaust pipe 8407 is penetrated in the sealing plate 8401. The other end of the exhaust pipe 8407 passes through the guide top plate 8406 and is connected to the air pump 8408 located on the guide top plate 8406. The other end of the air pump 8408 is connected to the external air. The entire gas channel does not have an interactive channel with the glue filling box 8301, and no gas will enter the glue filling box 8301; the glue filling pipeline is sealed The mechanism 84 can close and open the glue filling pipe 8302. When the device stops working, the glue filling pipe 8302 is closed, which can prevent the air inside the device from entering the glue filling box 8301, and prevent a large amount of glue in the glue filling box 8301 from being damaged. Only the glue in the glue filling pipe 8302 is lost. In addition, an exhaust pipe 8407 is provided on the sealing plate 8401. When the air pump 8408 is started, the air can be discharged, thereby accelerating the discharge speed of the residual glue in the glue filling pipe 8302. like Figure 1-2As shown, a glue layer height detection mechanism 9 is installed on the printing table 1. After the glue applied on the glue coating area 21 is dried by the ultraviolet curing device 4, it will shrink to a certain extent and the height will become shorter. In order to judge whether the height of the glue layer after drying meets the requirements, a glue layer height detection mechanism 9 is set at the end of the printing table 1. The glue layer height detection mechanism 9 includes a detection frame 901 and a height detection mechanism 902. As the name implies, the detection frame 901 is used to install the height detection mechanism 902, and the height detection mechanism 902 is used to detect the thickness of the glue in the glue coating area 21.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A UV curing device for printing and producing self-adhesive labels, comprising a printing table (1), a label body (2), a gluing mechanism (3), and an ultraviolet curing device (4), characterized in that: The label body (2) is provided with a glue coating area (21) and an easy-to-tear area (22); A plurality of conveying rollers (5) are installed on the printing table (1), the label body (2) moves along the conveying rollers (5), and the lower end surface of the label body (2) located in the printing table (1) is located on the upper side of the printing base plate (6); A gluing mechanism (3) is mounted on the printing table (1) and is located on the upper side of the label body (2), and is used to spray glue onto a gluing area (21) in the label body (2); The printing table (1) is provided with a glue rubbing and scraping mechanism (7), which is used to evenly spread the glue sprayed by the glue coating mechanism (3) on the glue coating area (21) and scrape away the glue in the easy-to-tear area (22); The label body (2) comprises a sinking anti-deviation area (23); A glue removing and filling mechanism (8) is installed on the printing base plate (6) in an area between the glue stroking and scraping mechanism (7) and the ultraviolet curing device (4); A glue layer height detection mechanism (9) is installed on the printing table (1).

2. A UV curing device for self-adhesive label printing production according to claim 1, characterized in that: The glue stroking and scraping mechanism (7) comprises a glue stroking mechanism (71) and a glue scraping mechanism (72).

3. The UV curing device for self-adhesive label printing production according to claim 2, characterized in that: The glue-applying mechanism (71) comprises a plurality of glue-applying plates (7101), the glue-applying plates (7101) being obliquely inserted into a fixed oblique frame (7102), the glue-applying plates (7101) being located on the upper side of the label body (2), and the semicircular portion (7104) provided at the bottom of the glue-applying plates (7101) being against the upper surface of the glue layer, and the glue-applying plates (7101) being inclined from top to bottom in a direction away from the starting point of the label body (2), the glue-applying plates (7101) being slidably connected to the adjustment slots in the fixed oblique frame (7102), and the fixed oblique frame ( An intermediate plate (7103) is fixedly installed in the frame (7102), the intermediate plate (7103) is inserted into the groove in the rubber plate (7101), and the two are slidably connected. The rubber plate (7101) is detachably connected to the fixed inclined frame (7102) by bolts, and a flattening plate (7105) is fixedly installed on the fixed inclined frame (7102), and the flattening plate (7105) includes a horizontal plate and an inclined plate. The inclined plate is fitted with the outer wall of the fixed inclined frame (7102), the horizontal plates are smoothly connected to the inclined plates, and the lower end surface of the horizontal plate is flush with the upper end surface of the adhesive layer.

4. The UV curing device for self-adhesive label printing production according to claim 3, characterized in that: The glue scraping mechanism (72) comprises a plurality of first glue scraping frames (7201), the plurality of first glue scraping frames (7201) corresponding one to one with the easy-to-tear regions (22), and the bottom of the first glue scraping frames (7201) abuts against the label substrate in the label body (2), and the bottom of the first glue scraping frames (7201) is provided with a glue inlet flare (7202), the glue inlet flare (7202) is wide at the bottom and narrow at the top, and the widest part is the same as the width of the easy-to-tear region (22); a substrate pressing plate (7203) is installed on the first glue scraping frame (7201), and the lower end surface of the substrate pressing plate (7203) abuts against the upper end surface of the label substrate in the label body.

5. The UV curing device for printing and producing self-adhesive labels according to claim 4, characterized in that: A first crescent guide plate (7204) is fixedly installed between adjacent first scraper frames (7201), a first conveying blade (7205) is installed inside the first crescent guide plate (7204), a blade in the first conveying blade (7205) is against the end surface of the bottom of the first crescent guide plate (7204), one end of the first conveying blade (7205) is connected to a conveying motor for driving the first conveying blade (7205) to rotate, and the other end is inserted into the first waste rubber storage box (7206).

6. The UV curing device for self-adhesive label printing production according to claim 1, characterized in that: The two side edges of the label body (2) in the sinking anti-deviation area (23) are arc-shapedly recessed downward, and the two side edges are parallel to the moving direction of the label body (2). An anti-deviation sinking groove (61) and a label upper lifting groove (62) are provided at a position on the printing base plate (6) corresponding to the sinking anti-deviation area (23). The label upper lifting groove (62) is inclined from bottom to top along the moving direction of the label body (2).

7. The UV curing device for self-adhesive label printing production according to claim 1, characterized in that: The glue removal and glue repair mechanism (8) comprises a label sinking guide plate (81), a glue removal mechanism (82), and a glue repair mechanism (83); the glue removal and glue repair mechanism (8) is installed at the position of the sinking anti-deviation area (23); the label sinking guide plate (81) comprises an upward top plate (8101), the upward top plate (8101) is fixedly connected to a molding top plate (8102), an arc groove is provided in the molding top plate (8102), and the molding top plate (8102) is fixedly connected to the molding side plate (8103).

8. The UV curing device for printing and producing self-adhesive labels according to claim 7, characterized in that: The glue removal mechanism (82) comprises a plurality of second glue scraping frames (8201), a second crescent guide plate (8202) is installed between adjacent second glue scraping frames (8201), a second conveying blade (8203) is installed in the second crescent guide plate (8202), and the other end of the second conveying blade (8203) is inserted into a second waste glue storage box; the glue replenishing mechanism (83) comprises a glue replenishing box (8301) and a box cover, the box cover is connected to a glue inlet pipe, the glue replenishing box (8301) is connected to a plurality of glue replenishing pipes (8302), the glue replenishing pipes (8302) are inserted into the glue replenishing shaping frame (8303), and a glue replenishing groove is provided in the glue replenishing shaping frame (8303), and the width of the glue replenishing groove is the same as the width of the glue coating area (21).

9. The UV curing device for printing and producing self-adhesive labels according to claim 8, characterized in that: The glue filling box (8301) is provided with a glue filling pipeline sealing mechanism (84), which includes at least two states, namely a closed state and an open state. In the open state, the glue filling box (8301) is connected to the glue filling pipeline (8302), and in the closed state, the passage between the glue filling box (8301) and the glue filling pipeline (8302) is blocked.

10. The UV curing device for self-adhesive label printing production according to claim 9, characterized in that: The glue filling pipe sealing mechanism (84) comprises a blocking plate (8401) and a movable plate (8402), wherein the blocking plates (8401) correspond to the glue filling pipe (8302) in a one-to-one manner, two movable plates (8402) are provided, and each movable plate (8402) is connected to a plurality of blocking plates (8401), and a sealing groove (8304) is provided at a position of the glue filling box (8301) corresponding to the blocking plate (8401), and the size of the sealing groove (8304) is larger than the size of the glue filling pipe (8302), and the movable plate (8402) is slidably connected to the sliding groove (8305) in the glue filling box (8301), and the movable plate (8402) is slidably connected to the sliding groove (8305) in the glue filling box (8301). 402) is rotatably connected to the pull-out plate (8403), the other end of the pull-out plate (8403) is rotatably mounted at a non-center position of the circular plate (8404), and the output shaft of the drive motor (8405) is mounted at the center of the circular plate (8404); the upper end surface of the movable plate (8402) abuts against the lower end surface of the guide top plate (8406), an exhaust pipe (8407) penetrates the sealing plate (8401), the other end of the exhaust pipe (8407) passes through the guide top plate (8406) and is connected to an air pump (8408) located on the guide top plate (8406), and the other end of the air pump (8408) is connected to the external air.

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