A glue screen printer without stopping

Abstract

The present application belongs to the technical field of glue screen printing machine, especially relates to a glue screen printing machine without staying, which is used for glue screen printing operation on the surface of plate products, comprising a conveying belt, a leveling assembly and a screen printing assembly, the conveying belt is used for conveying plate products at equal intervals, the leveling assembly is used for leveling the working surface of the conveying belt, and the screen printing assembly is used for glue screen printing coating on the paperboard products on the conveying belt. In the whole automatic glue screen printing process, the lifting of the screen printing assembly and the movement of the conveying belt only need to be driven by motor B, and the squeegee A and the squeegee C only need to be driven by motor A to be alternately replaced, and the squeegee A and the squeegee C only passively scrape, extrude and scrape the glue on the glue screen to homogenize during the movement of the squeegee B, so that the automatic structure is less, the equipment structure is simple, and the manufacturing cost of the glue screen printing equipment is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of glue screen printing machines, in particular to a glue screen printing machine without staying. BACKGROUND

[0002] The glue screen printing machine is to make the required pattern on the screen plate, pour glue on the screen plate, and then squeeze the glue through the screen plate to the product surface to complete the glue application on the product surface.

[0003] The current glue screen printing machine is composed of a product placement table, a screen plate and a scraper. When printing glue, the glue is poured onto the screen plate, and then the screen plate is placed on the product surface, and the glue is squeezed through the screen plate holes onto the product by the scraper.

[0004] If the above glue application process is automated, the product placement table needs to be designed with a main drive to achieve automatic feeding of the product, the screen plate needs to be designed with a lifting structure, and the scraper needs to be designed with an automatic glue scraping structure, resulting in more control and drive modules required for automation and higher production cost of the equipment.

[0005] In addition, after the glue on the screen plate is scraped and squeezed multiple times by the scraper, the glue is squeezed out only at the screen holes on the screen plate, leaving more glue at the non-screen hole positions or flowing and accumulating to one side of the screen plate due to the possible non-horizontal placement table, resulting in uneven distribution of glue on the screen plate, which makes the amount of glue on some areas of the screen plate not meet the requirements, and finally leads to uneven glue application on the product.

[0006] The present application designs a glue screen printing machine without staying to solve the above problems. SUMMARY

[0007] Therefore, it is necessary to provide a glue screen printing machine without staying to solve the problems of the current glue screen printing machine. The transmission teeth B on the pressing plates on both sides of the frame B in the screen printing mechanism cooperate with the transmission teeth A on both sides of the transmission belt to drive the transmission belt and the board on the transmission belt to move horizontally synchronously when the bottom screen printing plate of the screen printing assembly is attached to the board on the transmission belt. During the synchronous movement of the screen printing plate, the transmission belt and the board, the scraper A at the end of the scraper A passively scrapes and squeezes the glue on the glue screen to complete the glue screen printing on the board. During the entire automatic glue screen printing process, the lifting of the screen printing assembly and the movement of the transmission belt only need to be driven by motor B, and the scraper A and the scraper C only need to be driven by motor A for alternative replacement. The scraper A and the scraper C only passively scrape and squeeze the glue on the glue screen during the movement of the frame B to scrape and squeeze the glue evenly. The automatic structure is less, thereby reducing the manufacturing cost of the glue screen printing equipment.

[0008] The above object is achieved by the following technical scheme:

[0009] A glue screen printing machine without stopping for carrying out glue screen printing on the surface of a board product, comprising:

[0010] A conveying belt for conveying the board products at equal intervals; the conveying belt is provided with continuous transmission teeth A on both sides of the working surface.

[0011] A leveling assembly for leveling the working surface of the conveying belt.

[0012] A screen printing assembly for carrying out glue screen printing on the paperboard products on the conveying belt; the screen printing assembly comprises two pairs of vertical guide rods A symmetrically arranged above both sides of the conveying belt and fixed to the support, each pair of the guide rods A is sleeved with two sliding sleeves A integrally connected with horizontal guide rods B, the guide rods B are sleeved with two sliding sleeves B, the lower part of the sliding sleeves B is integrally connected with a square frame A, two pairs of guide pins are symmetrically arranged on both sides of the square frame A, the guide pins slide in a closed loop guide groove formed by a horizontal groove and an arc groove on the guide seat B in one direction, the arc groove is above the horizontal groove, the lower part of the square frame A is connected with a square frame B through four connecting assemblies located in the middle of four edges thereof, two pressing plates are symmetrically arranged on both sides of the square frame B, the bottom of the pressing plate is provided with transmission teeth B corresponding to the transmission teeth A on the conveying belt, the bottom end of the square frame B is provided with a glue screen, the bottom end of the glue screen is attached with a screen printing plate matched with the board, the lower part of the guide rods B is integrally connected with a guide seat A, the upper arc-shaped sliding groove in the side wall of the guide seat A slides a sliding seat driven by a motor A, a scraper B and a scraper A for extruding the glue on the glue screen are integrally connected between the two sliding seats, the end sliding groove of the scraper B is provided with a scraper C for scraping the glue on the glue screen, the ends of the scraper C and the scraper A are distributed along the guide rods B at intervals, and the scraper C is connected with the scraper B through two plate springs.

[0013] In one embodiment, the conveying belt is installed on two transmission rollers, and the two transmission rollers are installed on the support.

[0014] In one of the embodiments, the leveling assembly comprises a top plate arranged between the two transmission rollers and supporting the upper part of the transmission belt, one end of the top plate is hingedly connected with left and right distributed connecting rods A and B, the other end of the top plate is arranged below a top rod matched therewith, the lower end of the connecting rod A is hingedly connected with a screw sleeve A, the screw sleeve A is internally threadedly connected with a vertical screw rod A, the screw rod A is rotationally connected with a support, the lower end of the screw rod A is installed with a crank handle A, the lower end of the connecting rod B is hingedly connected with a connecting rod C, the lower end of the connecting rod C is hingedly connected with a screw sleeve B, the screw sleeve B is internally threadedly connected with a vertical screw rod B, the lower end of the screw rod B is installed with a crank handle B, the lower end of the top rod is integrally connected with a frame surrounding the lower part of the transmission belt, the frame is slidingly arranged in two guide sleeves on the support, the lower end of the frame is arranged with a ring sleeve, the ring sleeve is rotationally connected with a screw rod C, the screw rod C is threadedly connected with the support, the lower end of the screw rod C is installed with a crank handle C.

[0015] In one of the embodiments, the outer side of the sliding seat is hingedly connected with a connecting rod D, the terminal end of the connecting rod D is rotationally connected with a crank shaft A, the crank shaft A is rotationally arranged in an axle seat, the axle seat is integrally connected with a guide seat A, the crank shaft A is drivingly connected with the output shaft of a motor A on the axle seat.

[0016] In one of the embodiments, one end of the square frame A is hingedly connected with two left and right symmetrically distributed connecting rods E, the terminal end of the connecting rod E is rotationally connected with a crank shaft B, the crank shaft B is rotationally arranged on the support, the crank shaft B is drivingly connected with the output shaft of a motor B on the support.

[0017] In one of the embodiments, the connecting assembly comprises a ring A integrally connected with the square frame A, the ring A is hingedly connected with a ring B through two pin shafts A, the ring B is hingedly connected with a ring C through two pin shafts B having axes perpendicular to the axes of the pin shafts A, the ring C is slidingly arranged with a connecting column, the upper end of the connecting column is provided with a limiting ball and the lower end is provided with a hinged ball, the hinged ball is rotationally arranged in a ball groove on an ear plate, the ear plate is integrally connected with a square frame B, the ear plate and the ring A are connected with a pressing spring.

[0018] In one embodiment, the end of the scraper A is provided with a rubber scraping strip A, so that the scraper A can better adapt to the glue net, ensuring that the glue gathered on one side of the glue strip is uniformly extruded and coated on the board product. The end of the scraper C is provided with a rubber scraping strip B, and the glue net is provided with a glue strip at the starting end of the silk screen printing, so that the scraper C can better adapt to the glue net, ensuring that the scraper C can completely clean and scrape the glue on the glue net. The glue strip has two inclined surfaces corresponding to the scraping strips A and B. The inclined surface corresponding to the scraping strip B on the glue strip allows the scraping strip B to scrape the glue on the glue net onto the inclined surface, thereby avoiding the glue being absorbed by the mesh holes of the glue net and not easily spreading uniformly to both sides. The inclined surface corresponding to the scraping strip A on the glue strip can reduce the resistance of the scraping strip A in the initial stage of movement.

[0019] In one embodiment, the end of the guide pin is provided with a roller, which reduces the friction between the guide pin and the horizontal slot and the arc slot.

[0020] In one embodiment, the glue net and the silk screen printing plate are connected by bolts and the square box B.

[0021] In one embodiment, the arc slot is hinged with a baffle B at the slot opening of the starting end of the glue silk screen printing, and the baffle B is connected with the corresponding hinge pin and has a spiral spring B that closes the slot opening of the arc slot. The baffle B is provided with a clamping block C, which cooperates with a clamping block D on the guide seat B. The horizontal slot is hinged with a baffle A at the slot opening of the ending end of the glue silk screen printing, and the baffle A is connected with the corresponding hinge pin and has a spiral spring A that closes the slot opening of the horizontal slot. The baffle A is provided with a clamping block A, which cooperates with a clamping block B on the guide seat B, ensuring that the guide pin can move unidirectionally in the closed guide slot formed by the horizontal slot and the arc slot.

[0022] The beneficial effects of the present application are as follows:

[0023] The transmission teeth B on the pressing plates on both sides of the square box B in the silk screen printing mechanism cooperate with the transmission teeth A on both sides of the transmission belt to realize the synchronous horizontal movement of the transmission belt and the board on the transmission belt when the silk screen printing assembly is attached to the bottom of the silk screen printing plate. During the synchronous movement of the silk screen printing plate, the transmission belt and the board, the scraping strip A at the end of the scraper A passively scrapes, extrudes and coats the glue on the glue net to complete the glue silk screen printing on the board. During the entire automatic glue silk screen printing process, the lifting of the silk screen printing assembly and the movement of the transmission belt only need to be driven by the motor B, and the scraper A and the scraper C only need to be driven by the motor A for alternative replacement. The scraper A and the scraper C only passively scrape, extrude and coat the glue on the glue net during the movement of the square box B. The automatic structure is less, thereby reducing the manufacturing cost of the glue silk screen printing equipment.

[0024] The leveling assembly can effectively level the working surface of the conveying belt, the frame B connected with the frame A through the connecting assembly in the silk screen assembly can drive the silk screen plate to adaptively attach to the plate on the conveying belt, ensure that the silk screen plate and the plate on the conveying belt are in parallel and uniform contact, and the telescopic cooperation of the scraper C and the scraper B can ensure that the scraper C can still be in uniform contact with the rubber net under the action of the plate spring and effectively complete the complete scraping of the glue on the rubber net when the scraper C is worn, so that the plate on the conveying belt can be uniformly coated with glue.

[0025] The rubber net in the application can ensure that the glue is uniformly coated on the silk screen plate below and the plate on the conveying belt when being scraped and extruded by the scraper A, and the scraper C in the silk screen mechanism of the application can make the glue converge on the corresponding side slope of the glue uniformizing strip after scraping the glue on the rubber net, so that the glue scraped by the scraper C flows horizontally and is uniformized under the guidance of the slope of the glue uniformizing strip, and the remaining glue on the rubber net is uniformly coated on the silk screen plate and then uniformly coated on the plate on the conveying belt under the subsequent scraping and extruding of the scraper A.

[0026] The silk screen assembly in the application moves along the closed loop guide groove formed by the horizontal groove and the arc groove on the guide B under the driving of the motor B, continuously and continuously performs glue silk screen operation on the equally spaced plate products conveyed on the conveying belt, and has high working efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the overall schematic diagram of the application.

[0028] Figure 2 It is the cross-sectional schematic diagram of the application.

[0029] Figure 3 It is the cross-sectional schematic diagram of the leveling assembly and the conveying belt.

[0030] Figure 4 It is the cross-sectional schematic diagram of the leveling assembly and the conveying belt.

[0031] Figure 5 It is the cross-sectional schematic diagram of the silk screen assembly and the conveying belt.

[0032] Figure 6 It is the schematic diagram of the two guide pins on the same side of the frame A and the guide seat.

[0033] Figure 7 It is the cross-sectional schematic diagram of the baffle A.

[0034] Figure 8 It is the cross-sectional schematic diagram of the baffle B.

[0035] Figure 9 It is the driving structure schematic diagram of the frame A.

[0036] Figure 10 Figure 1 is a schematic diagram of a silk screen assembly.

[0037] Figure 11 Figure 2 is a schematic diagram of a squeegee A, squeegee B and squeegee C drive structure cross section.

[0038] Figure 12 Figure 3 is a schematic diagram of a connecting assembly.

[0039] Figure 13 Figure 4 is a schematic diagram of a squeegee A and squeegee B cooperating with a frame B bottom screen cross section.

[0040] Figure 14 Figure 5 is a schematic diagram of a squeegee B cooperating with a squeegee C cross section.

[0041] Figure 15 Figure 6 is a schematic diagram of a conveyor belt.

[0042] Figure 16 Figure 7 is a schematic diagram of a frame B.

[0043] Figure 8 is a schematic diagram of a frame B.

[0044] 101, bracket; 102, conveyor belt; 103, drive gear A; 104, conveyor roller; 105, plate material;

[0045] 200, leveling assembly; 201, top plate; 202, link A; 203, screw sleeve A; 204, screw rod A; 205, handle A; 206, link B; 207, link C; 208, screw sleeve B; 209, screw rod B; 210, handle B; 211, leveling sensor; 212, frame; 213, ring sleeve; 214, guide sleeve; 215, top rod; 216, screw rod C; 217, handle C;

[0046] 300, silk printing assembly; 301, guide rod A; 302, sliding sleeve A; 303, guide rod B; 305, guide seat A; 306, sliding seat; 307, connecting rod D; 308, crankshaft A; 309, motor A; 310, shaft seat; 311, scraper A; 312, scraper A; 313, scraper B; 314, scraper C; 315, scraper B; 316, flat spring; 317, sliding sleeve B; 319, square frame A; 320, guide pin; 321, roller; 322, connecting assembly; 323, ring A; 324, pin shaft A; 325, ring B; 326, pin shaft B; 327, ring C; 328, connecting column; 329, limit ball; 330, hinge ball; 331, ear plate; 332, pressure spring; 333, square frame B; 334, glue net; 335, silk printing plate; 336, bolt; 337, glue uniformity strip; 338, pressing plate; 339, transmission tooth B; 340, guide seat B; 341, horizontal groove; 342, arc groove; 343, baffle A; 344, clamping block A; 345, clamping block B; 346, spiral spring A; 347, baffle B; 348, clamping block C; 349, clamping block D; 350, spiral spring B; 351, connecting rod E; 352, crankshaft B; 353, motor B. DETAILED DESCRIPTION

[0047] In order to make the objects, technical solutions and advantages of the present application clearer, the following further describes the present application with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0048] The serial numbers of components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "coupling" in this application include direct and indirect connection (coupling) unless otherwise specified. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] like Figure 1 , 2 As shown, a non-stop adhesive screen printing machine is used to perform adhesive screen printing operations on the surface of product board 105, including:

[0051] like Figure 1 , 15 As shown, the conveyor belt 102 is used to convey the sheet material 105 product at equal intervals; continuous transmission teeth A103 are respectively provided on both sides of the working surface of the conveyor belt 102.

[0052] like Figure 2 , 3 As shown in Figure 4, the leveling component 200 is used to level the working surface of the conveyor belt 102.

[0053] like Figure 1 , 2 As shown in Figure 3, the screen printing assembly 300 is used for screen printing adhesive onto the cardboard products on the conveyor belt 102; as Figure 1 , 5 As shown, the screen printing assembly 300 includes two pairs of vertical guide rods A301 fixed to the bracket 101 and symmetrically distributed above both sides of the conveyor belt 102, as follows: Figure 5 , 10 As shown, each pair of guide rods A301 is fitted with two sliding sleeves A302 integrally connected to horizontal guide rods B303. Two sliding sleeves B317 are fitted onto each guide rod B303. A square frame A319 is integrally connected below each sliding sleeve B317. Two pairs of guide pins 320 are symmetrically arranged on both sides of the square frame A319. Figure 1 , 5 As shown in Figure 6, the guide pin 320 slides unidirectionally within a closed-loop guide groove formed by a horizontal groove 341 and an arc groove 342 on the guide seat B340. The arc groove 342 is located above the horizontal groove 341. Figure 1 , 5 As shown in Figure 10, the lower part of the frame A319 is connected to the frame B333 by four connecting components 322 located at the center of its four sides, as follows. Figure 3 , 15, 16, two pressing plates 338 are symmetrically arranged on both sides of the frame B333, the bottom of the pressing plate 338 is provided with a transmission tooth B339 corresponding to the transmission tooth A103 on the conveying belt 102, as shown in Figure 5 、 10 , 13, the bottom end of the frame B333 is provided with a glue net 334, the bottom end of the glue net 334 is provided with a silk screen 335 matched with the plate 105, and the guide rod B303 is integrally connected with a guide seat A305 below, as shown in Figure 11 、 13 , the upper arc-shaped sliding groove of the side wall of the guide seat A305 slides a sliding seat 306 driven by a motor A309, two sliding seats 306 are integrally connected with a scraper B313 and a scraper A311 for extruding the glue on the glue net 334, the end of the scraper B313 is provided with a scraper C314 for scraping the glue on the glue net 334, and the end of the scraper C314 and the end of the scraper A311 are distributed along the guide rod B303, as shown in Figure 13 、 14 , the scraper C314 is connected with the scraper B313 through two plate springs 316.

[0054] The transmission tooth B339 on the pressing plate 338 of the frame B333 in the silk screen mechanism cooperates with the transmission tooth A103 on both sides of the conveying belt 102 to drive the conveying belt 102 and the plate 105 on the conveying belt 102 to move synchronously horizontally when the silk screen assembly 300 is attached to the bottom of the silk screen 335 and the plate 105 on the conveying belt 102, and the scraper A311 end scraper A312 passively scrapes and extrudes the glue on the glue net 334 to complete the glue silk screen printing on the plate 105 during the synchronous movement of the silk screen 335, the conveying belt 102 and the plate 105, during the entire automatic glue silk screen printing process, the lifting of the silk screen assembly 300 and the movement of the conveying belt 102 only need to be driven by the motor B353, and the scraper A311 and the scraper C314 only need to be driven by the motor A309 to be replaced alternately, and the scraper A311 and the scraper C314 only passively scrape and extrude the glue on the glue net 334 during the movement of the frame B333, and the scraper A311 and the scraper C314 are scraped and extruded uniformly, so that the automatic structure is less, thereby reducing the manufacturing cost of the glue silk screen printing equipment.

[0055] In further embodiments, as shown in Figure 2 , the conveying belt 102 is installed on two conveying rollers 104, and the two conveying rollers 104 are installed on the support 101.

[0056] In further embodiments, as shown in Figure 2 、 3As shown in Figure 4, the leveling assembly 200 includes a top plate 201, which is disposed between two transmission rollers 104 and provides support for the upper part of the transmission belt 102. A connecting rod A202 and a connecting rod B206, distributed horizontally, are hinged to the bottom of one end of the top plate 201. A top rod 215, which cooperates with the top plate 201, is disposed below the other end of the top plate 201. A threaded sleeve A203 is hinged to the lower end of the connecting rod A202. A vertical screw A204 is internally threaded onto the threaded sleeve A203. The screw A204 is rotatably connected to the bracket 101. A crank handle A205 is installed at the lower end of the screw A204. The lower end of the connecting rod B206 is hinged... A connecting rod C207 is connected, and a threaded sleeve B208 is hinged to the lower end of the connecting rod C207. The threaded sleeve B208 is internally threaded to a vertical screw B209. A crank handle B210 is installed at the lower end of the screw B209. A frame 212 that surrounds the lower part of the conveyor belt 102 is integrally connected to the lower end of the top rod 215. The frame 212 is slidably disposed in two guide sleeves 214 on the bracket 101. A ring 213 is provided in the middle of the lower end of the frame 212. A screw C216 is rotatably connected in the ring 213. The screw C216 is threadedly connected to the bracket 101. A crank handle C217 is installed at the lower end of the screw C216.

[0057] In a further embodiment, such as Figure 11 As shown, a connecting rod D307 is hinged to the outer side of the slide 306, and a crankshaft A308 is rotatably connected to the end of the connecting rod D307. The crankshaft A308 is rotatably mounted on the bearing seat 310, and the bearing seat 310 is integrally connected to the guide seat A305. The crankshaft A308 is drively connected to the output shaft of the motor A309 on the bearing seat 310.

[0058] In a further embodiment, such as Figure 9 As shown, one end of the frame A319 is hinged to two symmetrically distributed connecting rods E351. The ends of the connecting rods E351 are rotatably connected to a crankshaft B352. The crankshaft B352 is rotatably mounted on the bracket 101. The crankshaft B352 is connected to the output shaft of the motor B353 on the bracket 101.

[0059] In a further embodiment, such as Figure 12 , 13As shown, the connecting assembly 322 includes a ring A323 integrally connected to the frame A319. A ring B325 is hinged to the ring A323 by two pins A324. A ring C327 is hinged to the ring B325 by two pins B326 whose axes intersect perpendicularly with the axis of pins A324. A connecting post 328 is slidably disposed in the ring C327. The upper end of the connecting post 328 has a limiting ball 329 and the lower end has a hinge ball 330. The hinge ball 330 rotates in a ball groove on the ear plate 331. The ear plate 331 is integrally connected to the frame B333. A pressure spring 332 is connected between the ear plate 331 and the ring A323.

[0060] In a further embodiment, such as Figure 13 As shown, a rubber scraper strip A312 is installed at the end of the scraper A311, allowing the scraper A311 to better adapt to the glue screen 334 and ensure that the scraper A311 evenly squeezes and coats the glue gathered on one side of the glue spreading strip 337 onto the board 105 product. A rubber scraper strip B315 is installed at the end of the scraper C314, and a glue spreading strip 337 is installed at the glue screen printing starting end of the glue screen 334, allowing the scraper C314 to better adapt to the glue screen 334 and ensure that the scraper C314 can completely and thoroughly clean and scrape off the glue on the glue screen 334. The glue-spreading strip 337 has two inclined surfaces that correspond one-to-one with the scraper A312 and scraper B315. The inclined surface on the glue-spreading strip 337 that cooperates with the scraper B315 allows the scraper B315 to scrape the glue on the glue mesh 334 onto the inclined surface and detach it from the mesh of the glue mesh 334, preventing the glue from being poorly diffused evenly to both sides due to the adsorption of the mesh of the glue mesh 334. The inclined surface on the glue-spreading strip 337 that cooperates with the scraper A312 can reduce the resistance of the scraper A312 in the initial stage of movement.

[0061] In a further embodiment, such as Figure 6 , 10 As shown, a roller 321 is installed at the end of the guide pin 320 to reduce the friction between the guide pin 320 and the horizontal groove 341 and the arc groove 342.

[0062] In a further embodiment, such as Figure 13 As shown, the adhesive screen 334 and the screen printing plate 335 are connected to the frame B333 by bolts 336.

[0063] In a further embodiment, such as Figure 6 , 8 As shown, a baffle B347 is hinged at the starting end of the glue screen printing groove 342. A spiral spring B350 connects the baffle B347 to the corresponding hinge pin, causing the baffle B347 to close the groove opening of the arc groove 342. A locking block C348 is provided on the baffle B347, and the locking block C348 cooperates with the locking block D349 on the guide seat B340, as shown...Figure 6 、 7 As shown in the figure, the shutter A343 is hinged at the end of the horizontal slot 341, and the shutter A343 is connected with the corresponding hinge pin, and the spring A346 is connected between the shutter A343 and the corresponding hinge pin, which makes the shutter A343 close the slot of the horizontal slot 341, and the shutter A343 is provided with the clamping block A344, which cooperates with the clamping block B345 on the guide base B340, so that the guide pin 320 can move in one direction in the closed guide groove formed by the horizontal slot 341 and the arc slot 342.

[0064] The operation flow of the present application is as follows:

[0065] In the initial state, the guide pin 320 is located at the end of the horizontal slot 341 of the corresponding guide base A305, the shutter A343 is closed at the corresponding horizontal slot 341, the clamping block A344 is in contact with the clamping block B345, and the spring A346 is in a compressed state, the shutter B347 is closed at the corresponding arc slot 342, the clamping block C348 is in contact with the clamping block D349, and the spring B350 is in a compressed state, the printing plate 335 is in close contact with the board 105 on the transmission belt 102, the scraper A312 is in contact with the glue net 334, and the distance between the scraper A312 and the glue net 334 is the farthest, the scraper B315 is separated from the glue net 334, the sliding seat 306 is located at one end of the corresponding guide base A305, the four connecting assemblies 322 are in a compressed state, and the transmission teeth B339 of the pressing plate 338 on the square frame B333 are engaged with the transmission teeth A103 on the transmission belt 102. The transmission belt 102 is provided with board 105 distributed at equal intervals, and the distance between the board 105 is equal to the length of the horizontal slot 341.

[0066] Start the motor A309, the motor A309 drives the two sliding seats 306 to slide in the guide base A305 to the other end through the crankshaft A308 and the connecting rod D307, the two guide bases drive the scraper A311, the scraper B313 and the scraper C314 to swing, the scraper B315 at the end of the scraper C314 is in contact with the glue net 334, and the scraper A312 at the end of the scraper A311 is separated from the glue net 334, the scraper C314 moves a certain amplitude into the scraper B313, the plate spring 316 is compressed, so that the scraper B315 is in complete contact with the glue net 334, which ensures that the scraper B315 can effectively scrape off the glue on the glue net 334.

[0067] Start the motor B353, the motor B353 drives the square frame A319 to move towards the board 105 through the crankshaft B352 and the connecting rod E351, the guide pin 320 on the square frame A319 enters the arc slot 342 under the guidance of the shutter A343, the square frame A319 moves towards the board 105 along the direction of the arc slot 342, and the square frame A319 drives the square frame B333 to move synchronously and separates from the board 105 on the transmission belt 102 through the four connecting assemblies 322.

[0068] In the process of moving along the arc groove 342, the frame B333 moves vertically downward relative to the frame A319 by a certain amplitude under the resetting action of the spring 332 pressing on the connecting assembly 322, so that the limiting ball 329 of the connecting column 328 in the connecting assembly 322 abuts against the ring A323, and the connecting assembly 322 is in the longest state.

[0069] In the process of moving along the arc groove 342, the two pressing plates 338 on the frame B333 are separated from the conveying belt 102 and end the engagement of the transmission teeth A103 and the transmission teeth B339, at the same time, the scraping strip B315 at the end of the scraping plate C314 is passively scraped to the glue uniformization strip 337 on the glue net 334 in the horizontal direction, and the scraping of the glue by the scraping strip B315 will not make the glue move downward through the mesh on the glue net 334, avoiding the pollution of the conveying belt 102 by the glue flowing out.

[0070] When the guide pin 320 on the frame A319 moves to the glue screen printing starting end of the horizontal groove 341, the frame B333 is just driven to abut against the next plate 105, the four connecting assemblies 322 are deformed correspondingly so that the screen printing plate 335 is just tightly pressed on the plate 105, the transmission teeth B339 of the pressing plate 338 on the frame B333 are just engaged with the transmission teeth A103 on the conveying belt 102, the scraping strip B315 just scrapes the glue on the glue net 334 to the corresponding inclined surface of the glue uniformization strip 337, and after the glue reaches the inclined surface on the glue uniformization strip 337, it flows uniformly to both sides under the guidance of the glue uniformization strip 337 and stays on the glue uniformization strip 337.

[0071] In the process of the guide pin 320 entering the horizontal groove 341 from the arc groove 342, the baffle B347 swings downward to the limit under the abutting of the guide pin 320 and does not form a block to the guide pin 320 entering the horizontal groove 341, the clamping block C348 is separated from the clamping block D349, and the vortex spring B350 is further compressed, when the guide pin 320 reaches the glue screen printing starting end of the horizontal groove 341 and separates from the baffle B347, the baffle B347 swings back to reset under the resetting action of the vortex spring B350 and closes the arc groove 342, and the clamping block C348 abuts against the clamping block D349 again.

[0072] Then, the motor A309 is started, the motor A309 drives the two sliding seats 306 to slide back to reset in the guide seat A305 through a series of transmission, the two sliding seats 306 drive the scraping plate A311, the scraping plate B313 and the scraping plate C314 to swing back to reset, the scraping strip A312 abuts against the glue net 334 on the other side of the glue uniformization strip 337, and the scraping strip B315 separates from the glue net 334.

[0073] Then, the motor B 353 is started, and the motor B 353 drives the frame A 319 to move horizontally to the initial position through a series of transmission belts, the guide pin 320 on the frame A 319 moves along the horizontal slot 341 to the end of the glue screen printing, the frame A 319 drives the frame B 333 to move horizontally synchronously through the connecting assembly 322, and the frame B 333 drives the transmission belt 102 and the board 105 on the transmission belt 102 to move horizontally synchronously through the transmission teeth B 339 on the pressing plate 338 and the transmission teeth A 103 on the transmission belt 102.

[0074] During the movement of the transmission belt 102, the scraper A 312 moves horizontally relative to the glue screen 334 and uniformly pressurizes the glue on the glue uniformization strip 337 to the board 105 through the glue screen 334 and the screen printing plate 335.

[0075] During the movement of the guide pin 320 to the end of the glue screen printing of the horizontal slot 341, the baffle A 343 swings upward under the action of the guide pin 320 and does not form an obstacle to the movement of the guide pin 320, the spiral spring A 346 is further compressed, the clamping block A 344 is separated from the clamping block B 345, and when the guide pin 320 reaches the end of the horizontal slot 341 and is separated from the baffle A 343, the baffle A 343 swings back to reset under the resetting action of the spiral spring A 346 and closes the horizontal slot 341.

[0076] The glue screen 334 can ensure that the glue thereon is uniformly extruded and coated to the hollow pattern on the screen printing plate 335, thereby improving the glue screen printing quality of the screen printing plate 335 on the board 105 product.

[0077] The above process is repeated to continuously screen print the glue on the board 105 on the transmission belt 102.

Claims

1. A no-dwell glue screen printer for performing a glue screen printing operation on a surface of a board product, characterized by, The utility model provides a paperboard product's silk screen printing device, including: The transmission belt is used for conveying board product at equal interval, and the working surface of the transmission belt is provided with continuous transmission tooth A on both sides respectively; Leveling assembly is used for leveling the working surface of the transmission belt; The silk screen printing assembly is used for carrying out glue silk screen printing coating to the paperboard product on the transmission belt, and the silk screen printing assembly includes two pairs of vertical guide rod A which are fixedly installed on the support and are symmetrically distributed on the upper side of the transmission belt two sides, every pair of guide rod A is sleeved with two sliding sleeves A which are integrally connected by horizontal guide rod B, the guide rod B is sleeved with two sliding sleeves B, the lower side of sliding sleeve B is integrally connected with square frame A, the both sides of square frame A are symmetrically provided with two pairs of guide pin, the guide pin unidirectionally slides in the closed loop guide groove which is formed by horizontal groove and arc groove in guide seat B, the arc groove is located the upper side of horizontal groove, the lower side of square frame A is connected with square frame B through four connecting components which are located in the middle of four edges of square frame A, the both sides of square frame B are symmetrically provided with two pressing plates, the bottom of pressing plate has transmission tooth B which corresponds to transmission tooth A on the transmission belt, the bottom end of square frame B is provided with glue net, the bottom end of glue net is attached and provided with silk screen plate which cooperates with board, the lower side of guide rod B is integrally connected with guide seat A, the upper arc sliding groove in the side wall of guide seat A slides sliding seat which is driven by motor A, the both sides of two sliding seats are integrally connected with scraper B and scraper A which extrude the glue on glue net, the end sliding groove of scraper B is provided with scraper C which shovels and scrapes the glue on glue net, the end of scraper C and the end of scraper A are distributed along guide rod B, scraper C is connected with scraper B through two plate springs; One end of square frame A is hinged with two left and right symmetrically distributed connecting rods E, the end of connecting rod E is rotatably connected with crank B, crank B is rotatably arranged on the support, crank B is in transmission connection with the output shaft of motor B on the support; The connecting component includes ring A which is integrally connected with square frame A, ring A is hinged with ring B through two pin shafts A in it, ring B is hinged with ring C through two pin shafts B in it, the axis of pin shaft B is perpendicular to the axis of pin shaft A, ring C is slidably arranged with connecting column, the upper end of connecting column has limiting ball, the lower end has hinged ball, the hinged ball rotates in ball groove on ear plate, the ear plate is integrally connected with square frame B, the ear plate and ring A are connected with pressure spring; The end of scraper A is provided with rubber scraping strip A, the end of scraper C is provided with rubber scraping strip B, the starting end of glue silk screen printing of glue net is provided with glue distributing strip, the glue distributing strip has two inclined surfaces which correspondingly cooperate with scraping strip A and scraping strip B, The starting end slot of arc groove is hinged with baffle B, baffle B is connected with corresponding hinge pin, and the slot of baffle B is closed by the worm spring B of baffle B, baffle B is provided with clamping block C, clamping block C cooperates with clamping block D on guide seat B, the end slot of horizontal groove is hinged with baffle A, baffle A is connected with corresponding hinge pin, and the slot of baffle A is closed by the worm spring A of baffle A, baffle A is provided with clamping block A, clamping block A cooperates with clamping block B on guide seat B.

2. A no-dwell glue screen printer according to claim 1, wherein, The transmission belt is installed on two transmission rollers, and the two transmission rollers are installed on the support.

3. A no-dwell glue screen printer according to claim 2, wherein, The leveling assembly comprises a top plate arranged between the two transmission rollers and supporting the upper part of the transmission belt, one end of the top plate is hingedly connected with left and right distributed connecting rods A and B, the other end of the top plate is arranged below a top rod matched therewith, the lower end of the connecting rod A is hingedly connected with a screw sleeve A, the screw sleeve A is internally threadedly connected with a vertical screw rod A, the screw rod A is rotationally connected with the support, the lower end of the screw rod A is installed with a crank handle A, the lower end of the connecting rod B is hingedly connected with a connecting rod C, the lower end of the connecting rod C is hingedly connected with a screw sleeve B, the screw sleeve B is internally threadedly connected with a vertical screw rod B, the lower end of the screw rod B is installed with a crank handle B, the lower end of the top rod is integrally connected with a frame surrounding the lower part of the transmission belt, the frame is slidingly arranged in two guide sleeves on the support, the lower end of the frame is arranged in the middle with a ring sleeve, the ring sleeve is rotationally connected with a screw rod C, the screw rod C is threadedly connected with the support, the lower end of the screw rod C is installed with a crank handle C.

4. A no-dwell glue screen printer according to claim 1, wherein, The outer side of the sliding seat is hingedly connected with a connecting rod D, the terminal end of the connecting rod D is rotationally connected with a crank shaft A, the crank shaft A is rotationally arranged in an axle seat, the axle seat is integrally connected with a guide seat A, the crank shaft A is drivingly connected with the output shaft of a motor A on the axle seat.

5. A no-dwell glue stringer according to claim 1, wherein, The terminal end of the guide pin is installed with a roller.

6. A no-dwell glue stringer according to claim 1, wherein, The rubber net and the silk screen plate are connected with the square frame B through bolts.

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