Online dispensing machine

Abstract

An online glue dispenser comprises an assembly line and a glue dispensing device, the glue dispensing device is used for dispensing glue to workpieces located on the assembly line so as to achieve online glue dispensing of the workpieces, the glue dispensing device comprises a support and a plurality of glue head assemblies, each glue head assembly comprises an adjusting plate and a glue outlet nozzle connected to the adjusting plate, and the glue outlet nozzles are used for supplying glue to the upper surfaces of the workpieces; a roller group for rolling on the upper surface of the workpiece is arranged at the lower end of the adjusting plate, the adjusting plate is slidably connected to the glue head mounting piece through an adjusting sliding block and an adjusting sliding rail, and the roller group rolls along the upper surface of the workpiece and ascends and descends along with the structural change of the upper surface of the workpiece to drive the adjusting plate and the glue outlet nozzle to ascend and descend along the adjusting sliding rail; therefore, the glue outlet nozzle can adaptively adjust the distance between the glue outlet nozzle and the upper surface of the workpiece. According to the glue dispensing device, glue can be uniformly dropped onto a product through the glue outlet nozzle, the glue dispensing uniformity is ensured, interference between the glue outlet nozzle and a convex structure of a workpiece can be prevented, and smooth online glue dispensing is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of workshop equipment, and in particular to an online glue dispensing machine. Background Art

[0002] Glue dispenser is also called glue coating machine, glue dripping machine, glue spraying machine, glue filling machine, etc. It is mainly used for the precise dotting, injection, coating and dripping of glue, paint and other liquids in the workpiece process to the precise position of each workpiece. It can be used to achieve dotting, drawing lines, packaging, etc. At present, there is an online glue dispenser on the market, which drips the colloid onto the workpiece through the glue dispenser moving along the assembly line. The workpiece moves with the assembly line, and the glue dispenser follows the workpiece to achieve non-stop glue dispensing, so this glue dispensing equipment is called an online glue dispenser.

[0003] For some workpieces with higher precision requirements, the dispensing accuracy requirements are also higher. Since there are certain concave-convex structures on the surface of the workpiece, the dispensing head usually only moves in the flow direction of the workpiece and does not move up and down according to the concave-convex surface of the workpiece, which makes the distance between the dispensing head and the workpiece surface change. Not only will the colloid dripped onto the workpiece surface be uneven, but there will also be interference between the dispensing head and the workpiece, which is not conducive to the smooth dispensing. Summary of the invention

[0004] The object of the present invention is to provide an online dispensing machine, which can solve the problem of motion interference or uneven dispensing caused by the inability of the dispensing head to rise and fall by setting a lifting and adjusting mechanism so that the dispensing head can rise and fall as the workpiece structure changes.

[0005] To achieve the above object, the technical solution of the present invention is: an online glue dispensing machine, comprising: The assembly line is used to transport the workpiece, the direction in which the assembly line transports the workpiece is defined as the X-axis direction, the width direction of the assembly line is defined as the Y-axis direction, and the direction perpendicular to the X-axis and the Y-axis is defined as the Z-axis direction; A glue dispensing device is arranged in the Z-axis direction of the assembly line, and is used to dispense glue to the workpiece located on the assembly line to realize online glue dispensing of the workpiece. The glue dispensing device includes a bracket and a plurality of glue head assemblies. Each of the glue head assemblies is connected to the bracket through a glue head mounting piece so that the glue head assembly is maintained above the assembly line. The plurality of glue head assemblies are arranged along the Y-axis direction, and the glue head assemblies and the glue head mounting piece form a connection that can be lifted and lowered along the Z-axis. Each of the glue head components includes an adjustment plate and a glue nozzle connected to the adjustment plate, the glue nozzle is used to supply colloid to the upper surface of the workpiece, the lower end of the adjustment plate is provided with a roller group for rolling on the upper surface of the workpiece, the adjustment plate is slidably connected to the glue head mounting member through an adjustment slider and an adjustment slide rail, the adjustment slide rail extends along the Z-axis direction, the roller group rolls along the upper surface of the workpiece and rises and falls with the structural changes of the upper surface of the workpiece, driving the adjustment plate and the glue nozzle to rise and fall along the adjustment slide rail, forming a connection where the glue head assembly can be raised and lowered along the Z-axis relative to the glue head mounting member, so that the glue nozzle can adaptively adjust the distance between it and the upper surface of the workpiece.

[0006] In one embodiment, the rubber head mounting member is provided with a stop portion located below the adjusting slide rail, and the stop portion is used to form a limiting structure for the downward movement of the adjusting slider, thereby forming a movement limit for the rubber head assembly to descend under the action of gravity.

[0007] In one embodiment, a guide rod is provided at the upper end of the adjustment plate, one end of the guide rod is fixedly connected to the adjustment plate, and the other end of the guide rod is passed through the guide hole of the rubber head mounting component. A preload spring is provided on the outer sleeve of the guide rod, and the two ends of the preload spring are respectively abutted against the adjustment plate and the rubber head mounting component, so that the elastic force of the preload spring causes the roller group to be pressed against the upper surface of the workpiece.

[0008] In one embodiment, the roller group includes a roller mounting frame and three rollers rollingly connected to the roller mounting frame, the three rollers are arranged in a triangle, the rollers include two large diameter rollers and one small diameter roller, the diameter of the small diameter roller is smaller than the large diameter roller, and one of the large diameter rollers and the small diameter roller is arranged at intervals on both sides of the glue outlet nozzle along the Y-axis direction, and the two large diameter rollers are respectively arranged on both sides of the adjustment plate along the X-axis direction.

[0009] In one embodiment, the glue head assembly includes a glue discharge control valve connected to the adjustment plate, the inlet end of the glue discharge control valve is used to connect to the glue supply device, and the outlet end of the glue discharge control valve is connected to the glue discharge nozzle, thereby controlling the intermittent glue discharge of the glue discharge nozzle.

[0010] In one embodiment, it also includes a glue connecting assembly arranged on one side of the glue head assembly along the X-axis direction, the glue connecting assembly includes a glue connecting cylinder and a plurality of glue connecting tubes arranged along the Y-axis direction, the glue connecting cylinder is fixedly arranged, and the plurality of glue connecting tubes are connected to the telescopic end of the glue connecting cylinder through a glue connecting plate, so that the glue connecting tubes are suspended above the assembly line, and the number and spacing of the glue connecting tubes correspond to the number and spacing of the glue outlet nozzles, so that the glue connecting tubes are used to receive the glue dripping from the glue outlet nozzle when the glue outlet control valve is closed.

[0011] In one embodiment, a colloid dispensing valve and an air inlet connector are provided at the top of the bracket, the colloid dispensing valve is provided with a colloid inlet, a plurality of colloid outlets and a main switch arranged between the colloid inlet and the colloid outlet, the main switch is used to control the on-off between the colloid inlet and any of the colloid outlets, the colloid inlet is used to connect the colloid supply device, the number of the colloid outlets corresponds to the number of the colloid discharge control valves, each of the colloid outlets is connected to an inlet end of the colloid discharge control valve through a rubber hose, so that the inlet end of the colloid discharge control valve is indirectly connected to the colloid supply device through the colloid dispensing valve; each of the glue head components is also connected to a lifting cylinder, the air inlet connector is provided with an air inlet and a plurality of air outlets, the air inlet of the air inlet connector is used to connect to an air source, each of the air outlets of the air inlet connector is connected to a pneumatic switch, each of the pneumatic switches is connected to a colloid discharge control valve or a lifting cylinder through an air pipe, so that the pneumatic switch is used to control the action of the colloid discharge control valve or the lifting cylinder.

[0012] In one embodiment, the glue dispensing device also includes a transverse mounting plate extending along the Y-axis direction, the glue head mounting member is connected to the transverse mounting plate through a transverse connecting member, the transverse mounting plate is provided with a transverse slide rail, the transverse connecting member is provided with a transverse slider, the transverse slider forms a sliding connection with the transverse slide rail, so that the glue nozzle is formed to be movable along the Y-axis direction, the transverse connecting member is connected to a transverse motor, the output end of the transverse motor is provided with a transverse gear, the transverse mounting plate is provided with a transverse rack extending along the Y-axis direction, the transverse gear and the transverse rack are meshed, so that the rotation of the transverse motor drives the glue head assembly to move along the Y-axis direction, so as to adjust the spacing between the glue nozzles of adjacent glue head assemblies.

[0013] In one embodiment, the transverse moving mounting plate is connected to the bracket through a first lifting mechanism, and the glue head mounting piece is connected to the transverse moving connecting piece through a second lifting mechanism; the first lifting mechanism includes a lifting motor module, a first lifting slider and a first lifting rail extending along the Z-axis direction, the first lifting slider is connected to the transverse moving mounting plate, the first lifting rail is connected to the bracket, and the output end of the lifting motor module is connected to the transverse moving mounting plate for driving the transverse moving mounting plate to be lifted and lowered; the second lifting mechanism includes a lifting cylinder, a second lifting slider and a second lifting rail extending along the Z-axis direction, the second lifting slider is connected to the glue head mounting piece, the second lifting rail is connected to the transverse moving connecting piece, and the output end of the lifting cylinder is connected to the glue head mounting piece for driving the glue head mounting piece to be lifted and lowered; thereby, the glue nozzle is formed by the first lifting mechanism and the second lifting mechanism to be able to be lifted and lowered in the Z-axis direction so as to adjust the height of the glue nozzle.

[0014] In one embodiment, the bracket of the dispensing device is fixedly arranged on a frame across the assembly line along the Y-axis direction, and the assembly line moves the workpiece along the X-axis direction to form a relative movement between the glue head assembly and the workpiece.

[0015] The beneficial effects of the present invention are: 1. The present invention arranges a roller group and a glue nozzle linked to the roller group on the glue head assembly, and makes the roller group always press against the upper surface of the workpiece under the action of gravity. Therefore, during the relative movement of the glue head assembly and the workpiece, the roller group moves up and down along with the concave-convex structure on the upper surface of the workpiece, so that the glue nozzle and the upper surface of the workpiece maintain a relatively constant distance, which is conducive to the glue nozzle dripping the colloid evenly onto the product, ensuring the uniformity of glue dispensing, and preventing the glue nozzle from interfering with the convex structure of the workpiece, which is conducive to the smooth progress of online glue dispensing.

[0016] 2. Providing multiple glue head assemblies arranged along the Y-axis direction can reduce the movement of the glue head assemblies in the Y-axis direction, thereby improving the efficiency of glue dispensing.

[0017] 3. The roller group is provided with three rollers of different diameters. The triangular arrangement formed by the three rollers can maintain the stability of the glue nozzle. The different diameters of the rollers can be compatible with workpieces of various sizes. Whether it is a large-sized protrusion or a small-sized protrusion, there can be at least one roller to control the lifting and stability of the glue nozzle.

[0018] 4. The preload spring can give the roller assembly a downward preload force, so that it presses against the workpiece with a pressure greater than gravity, preventing the roller assembly from jumping under the action of the protrusion of the workpiece. While ensuring that the glue nozzle can be reliably raised and lowered as the workpiece structure changes, the stability of the glue nozzle is improved, further ensuring the uniformity of glue dispensing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 2 is a perspective view of an embodiment of the present invention.

[0020] Figure 2 It is a front view of an embodiment of the present invention.

[0021] Figure 3 2 is a top view of an embodiment of the present invention.

[0022] Figure 4 It is a right side view of an embodiment of the present invention.

[0023] Figure 5 It is a connection structure diagram of a glue dispensing device, a frame and a glue connection component according to an embodiment of the present invention.

[0024] Figure 6 It is a stereoscopic diagram of a glue dispensing device according to an embodiment of the present invention.

[0025] Figure 7 It is a right view of the dispensing device according to an embodiment of the present invention.

[0026] Figure 8 It is a front view of the dispensing device according to an embodiment of the present invention.

[0027] Fig. 9 It is a three-dimensional diagram of the connection structure of the glue head assembly and the transverse connecting piece of the glue dispensing device according to the embodiment of the present invention.

[0028] Fig.10 It is a side view of the connection structure between the glue head assembly and the transverse connecting piece of the glue dispensing device according to an embodiment of the present invention.

[0029] Fig.11 It is a diagram of the connection structure of some parts of the dispensing device according to an embodiment of the present invention.

[0030] Fig.12 It is a three-dimensional diagram of the adhesive bonding assembly according to an embodiment of the present invention.

[0031] in: 1- assembly line; 2- glue dispensing device; 21- bracket; 22- glue head assembly; 221- adjustment plate; 222- glue nozzle; 223- roller group; 2230- roller; 2231- roller mounting frame; 2232- large diameter roller; 2233- small diameter roller; 224- adjustment slider; 225- adjustment slide rail; 226- guide rod; 227- preload spring; 228- glue dispensing control valve; 23- glue head mounting part; 231- stopper; 232- guide hole; 233- mounting part; 234- guide part; 24- transverse installation plate; 241- transverse slide rail; 242- transverse rack; 243- photoelectric sensor; 25- transverse connecting piece; 251-transverse slider; 252-transverse motor; 253-transverse gear; 254-photoelectric shielding plate; 26-first lifting mechanism; 261-lifting motor module; 262-first lifting slider; 263-first lifting rail; 27-second lifting mechanism; 271-lifting cylinder; 272-second lifting slider; 273-second lifting rail; 28-colloid dispensing valve; 281-glue inlet; 282-glue outlet; 283-main switch; 29-air inlet connector; 291-air inlet; 292-pneumatic switch; 3-frame; 4-glue connecting assembly; 41-glue connecting cylinder; 42-glue connecting tube; 43-glue connecting plate; 100-workpiece. DETAILED DESCRIPTION

[0032] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0033] See also Figures 1 to 3 As shown, the present invention discloses an online dispensing machine, including an assembly line 1, the assembly line 1 is used to convey a workpiece 100, the direction of conveying the workpiece by the assembly line 1 is defined as the X-axis direction, the width direction of the assembly line is defined as the Y-axis direction, and the direction perpendicular to the X-axis and the Y-axis is defined as the Z-axis direction.

[0034] A dispensing device 2 is provided in the Z-axis direction of the assembly line 1. The dispensing device 2 includes a bracket 21 and a plurality of glue head assemblies 22. The plurality of glue head assemblies 22 are arranged in the Y-axis direction. The bracket 21 of the dispensing device 2 is fixedly arranged on a frame 3 across the assembly line 1 in the Y-axis direction. Each glue head assembly 22 is connected to the bracket 21 through a glue head mounting member 23 so that the glue head assembly 22 is maintained above the assembly line 1. The assembly line 1 moves along the X-axis direction with the workpiece 100, forming a relative movement between the glue head assembly 22 and the workpiece 100. The glue head assembly 22 is used to dispense glue to the workpiece 100 located on the assembly line to realize online dispensing of the workpiece 100. In this embodiment, when the workpiece 100 moves under the drive of the assembly line 1, it passes under the glue head assembly 22, and the glue head assembly 22 drips the colloid onto the workpiece 100 to complete the online dispensing. In other embodiments, in order to achieve online dispensing, the bracket 21 of the dispensing device 2 is movably arranged on the frame 3 along the X-axis direction, the workpiece 100 is placed on the stopped assembly line 1, and the bracket 21 drives the glue head assembly 22 to move along the X-axis direction to form a relative movement between the glue head assembly 22 and the workpiece 100. During the movement, the glue head assembly 22 drips colloid onto the workpiece 100 to achieve online dispensing.

[0035] See also Figures 1 to 3As shown, the glue head assembly 22 and the glue head mounting member 23 form a connection that can be raised and lowered along the Z-axis. Specifically: each glue head assembly 22 includes an adjustment plate 221 and a glue nozzle 222 connected to the adjustment plate 221, the glue nozzle 222 is used to supply glue to the upper surface of the workpiece 100, and the lower end of the adjustment plate 221 is provided with a roller group 223 for rolling on the upper surface of the workpiece 100. The adjustment plate 221 is slidably connected to the glue head mounting member 23 through an adjustment slider 224 and an adjustment slide rail 225. The adjustment slide rail 225 extends along the Z-axis direction. The roller group 223 rolls along the upper surface of the workpiece 100 and rises and falls with the structural changes of the upper surface of the workpiece 100, driving the adjustment plate 221 and the glue nozzle 222 to rise and fall along the adjustment slide rail 225, forming a connection between the glue head assembly 22 and the glue head mounting member 23 that can be raised and lowered along the Z-axis, so that the glue nozzle 222 can adaptively adjust the distance between it and the upper surface of the workpiece 100.

[0036] The present invention provides a roller group 223 and a glue nozzle 222 linked to the roller group 223 in the glue head assembly 22, and makes the roller group 223 always press against the upper surface of the workpiece 100 under the action of gravity, so that in the process of relative movement between the glue head assembly 22 and the workpiece 100, the roller group 223 moves up and down along with the concave-convex structure on the upper surface of the workpiece 100, so that the glue nozzle 222 and the upper surface of the workpiece 100 maintain a relatively constant distance, which is conducive to the glue nozzle 100 to evenly drip the colloid onto the product, ensuring the uniformity of glue dispensing, and preventing the glue nozzle 222 from interfering with the convex structure of the workpiece 100, which is conducive to the smooth progress of online glue dispensing. In addition, providing a plurality of glue head assemblies 22 arranged along the Y-axis direction can reduce the movement of the glue head assembly 22 in the Y-axis direction, thereby improving the efficiency of glue dispensing.

[0037] Since the rubber head assembly 22 is lowered under the action of gravity, when there is no contact between the roller group 223 of the rubber head assembly 22 and the workpiece 100, it is possible that the rubber head assembly 22 drops too much under gravity until the adjustment slider 224 is separated from the adjustment slide rail 225, and the rubber head assembly 22 falls off as a whole. In order to prevent the rubber head assembly 22 from dropping too much, the rubber head mounting member 23 is provided with a stopper 231 located below the adjustment slide rail 225, and the stopper 231 is used to form a limit structure for the downward movement of the adjustment slider 224, thereby forming a movement limit for the rubber head assembly 22 to drop under the action of gravity.

[0038] A guide rod 226 is provided at the upper end of the adjustment plate 221, one end of the guide rod 226 is fixedly connected to the adjustment plate 221, the other end of the guide rod 226 is passed through the guide hole 232 of the rubber head mounting member 23, and a preload spring 227 is provided on the outer sleeve of the guide rod 226, the two ends of the preload spring 227 are respectively abutted against the adjustment plate 221 and the rubber head mounting member 23, so that the elastic force of the preload spring 227 causes the roller group 223 to be pressed against the upper surface of the workpiece 100. The guide rod 226 of this embodiment is a bolt threadedly connected to the adjustment plate 221.

[0039] The preload spring 227 can give the roller assembly 223 a downward preload force, so that it presses against the workpiece 100 with a pressure greater than gravity, preventing the roller assembly 223 from jumping under the action of the protrusion of the workpiece 100. While ensuring that the glue nozzle 222 can be reliably raised and lowered as the workpiece structure changes, the stability of the glue nozzle 222 is improved, and the uniformity of glue dispensing is further guaranteed.

[0040] The rubber head mounting member 23 of this embodiment is formed by a mounting portion 233, a stopper portion 231, and a guide portion 234 having a guide hole 232 connected by bolts, the adjusting slide rail 225 is arranged on the mounting portion 233, and the stopper portion 231 and the guide portion 234 are respectively arranged at the upper and lower ends of the mounting portion 233 and protrude from the mounting portion 233. In other embodiments, the mounting portion 233, the stopper portion 231, and the guide portion 234 of the rubber head mounting member 23 may be an integrally formed structure.

[0041] The roller group 223 includes a roller mounting frame 2231 and three rollers 2230 rollingly connected to the roller mounting frame 2231. The three rollers 2230 are arranged in a triangle. The rollers include two large-diameter rollers 2232 and one small-diameter roller 2233. The diameter of the small-diameter roller 2233 is smaller than that of the large-diameter roller 2232. One of the large-diameter rollers 2232 and the small-diameter roller 2233 is arranged at intervals on both sides of the glue outlet 222 along the Y-axis direction. The two large-diameter rollers 2232 are respectively arranged on both sides of the adjustment plate 221 along the X-axis direction. The two large-diameter rollers 2232 are staggered in the Y-axis direction, thereby preventing the two large-diameter rollers 2232 from being biased toward the same side of the glue outlet 222, so that the driving force provided by the two large-diameter rollers 2232 to the glue outlet 222 is more balanced, and the glue outlet 222 is maintained stable.

[0042] The roller group 223 is provided with three rollers of different diameters. The triangular arrangement formed by the three rollers 2230 can maintain the stability of the glue nozzle 222. The different diameters of the rollers 2230 can be compatible with workpieces of various sizes. No matter whether it is a large-sized protrusion or a small-sized protrusion, there can be at least one roller 2230 to control the lifting and stability of the glue nozzle 222.

[0043] The glue head assembly 22 includes a glue discharging control valve 228 connected to the adjustment plate 221 , the inlet end of the glue discharging control valve 228 is used to be connected to the glue supply device, and the outlet end of the glue discharging control valve 228 is connected to the glue discharging nozzle 222 , thereby controlling the intermittent glue discharging of the glue discharging nozzle 222 .

[0044] See also Figures 1 to 3 As shown, the glue dispensing device 2 also includes a transverse installation plate 24 extending along the Y-axis direction, and the glue head installation member 23 is connected to the transverse installation plate 24 through a transverse connection member 25. The transverse installation plate 24 is provided with a transverse slide rail 241, and the transverse connection member 25 is provided with a transverse slider 251. The transverse slider 251 forms a sliding connection with the transverse slide rail 251, so that the glue dispensing nozzle 222 is formed to be movable along the Y-axis direction. The transverse connection member 25 is connected to a transverse motor 252, and a transverse gear 253 is provided at the output end of the transverse motor 252. The transverse installation plate 24 is provided with a transverse rack 242 extending along the Y-axis direction. The transverse gear 253 and the transverse rack 242 are meshed, so that the transverse motor 252 rotates to drive the glue head assembly 22 to move along the Y-axis direction, so as to adjust the spacing between the glue dispensing nozzles 222 of adjacent glue head assemblies 22.

[0045] In order to better control the movement of the glue head assembly 22 in the Y-axis direction, the transverse mounting plate 24 is provided with a plurality of photoelectric sensors 243 arranged at intervals along the Y-axis, and the transverse connecting member 25 is provided with a photoelectric shielding plate 254. The initial position of each glue head assembly 22 is determined by the cooperation between the photoelectric shielding plate 254 and the photoelectric sensor 243.

[0046] Since the workpiece 100 has different specifications and types, and the positions where glue needs to be dispensed are also different, the glue head assembly 22 is set to be movable along the Y-axis direction, so as to adjust the position of the glue nozzle 222 in the Y-axis direction according to the preset glue dispensing position. The glue head assembly 22 is set to be movable along the Y-axis direction, which can not only adapt to different glue dispensing positions of workpieces of different specifications and types, but also can adjust the position of the glue nozzle 222 in the Y-axis direction as needed during the glue dispensing process to adapt to the change of the glue dispensing position of the workpiece 100.

[0047] The transverse installation plate 24 is connected to the bracket 21 through a first lifting mechanism 26 , and the rubber head installation component 23 is connected to the transverse connection component 25 through a second lifting mechanism 27 .

[0048] The first lifting mechanism 26 includes a lifting motor module 261, a first lifting slider 262 and a first lifting rail 263 extending along the Z-axis direction. The first lifting slider 262 is connected to the transverse moving mounting plate 24, the first lifting rail 263 is connected to the bracket 21, and the output end of the lifting motor module 261 is connected to the transverse moving mounting plate 24 to drive the transverse moving mounting plate 24 to rise and fall. The output end of the lifting motor module 261 is a nut threadedly sleeved on the screw rod, and the transverse moving mounting plate 24 is fixedly connected to the outside of the nut through a connecting block. With the action of the lifting motor module 261, the transverse moving mounting plate 24 is driven to rise and fall, thereby driving multiple rubber head assemblies 22 to rise and fall simultaneously.

[0049] The second lifting mechanism 27 includes a lifting cylinder 271, a second lifting slider 272 and a second lifting rail 273 extending along the Z-axis direction. The second lifting slider 272 is connected to the rubber head mounting member 23, and the second lifting rail 273 is connected to the transverse connecting member 25. The output end of the lifting cylinder 271 is connected to the rubber head mounting member 23 to drive the rubber head mounting member 23 to move up and down, thereby driving the rubber head assembly 22 arranged on the rubber head mounting member 23 to move up and down.

[0050] The first lifting mechanism 26 is used to drive the multiple glue head assemblies 22 to rise and fall synchronously, so that the lifting control efficiency of the glue head assemblies 22 is higher, and the second lifting mechanism 27 is used to drive the single glue head assembly 22 to rise and fall, so as to more accurately adjust the height of the glue nozzle 222 according to the different structures of the workpiece 100, so as to achieve higher dispensing accuracy. The first lifting mechanism 26 and the second lifting mechanism 27 cooperate to make the glue nozzle 222 form a setting that can be lifted and moved along the Z-axis direction, so as to adjust the height of the glue nozzle 222, more specifically, the initial height of the glue nozzle 222 is adjusted by the cooperation of the first lifting mechanism 26 and the second lifting mechanism 27. The height adjustment is performed manually. Specifically, the initial height of the glue nozzle 222 is pre-set according to the specifications of the workpiece 100, and the glue nozzle 222 reaches this height through the cooperation of the first lifting mechanism 26 and the second lifting mechanism 27. The adjustment of the roller group 223 and other mechanisms is due to the concave and convex structure on the surface of the workpiece 100. The gravity of the roller group 223 and the elastic force of the pre-tightening spring 227 make the height of the glue nozzle 222 adaptively rise and fall as the surface structure of the workpiece 100 changes.

[0051] Since the glue discharge from the glue nozzle 222 is intermittent, in order to prevent the workpiece 100 and the assembly line 1 from being contaminated by glue due to unexpected glue dripping from the glue nozzle 222 when the glue control valve 228 is closed, the present embodiment provides a glue receiving component 4 for receiving the glue dripping from the glue nozzle 222 when the glue control valve 228 is closed.

[0052] The glue connecting assembly 4 is arranged on one side of the glue head assembly 22 and connected to the frame 3. The glue connecting assembly 4 includes a glue connecting cylinder 41 and a plurality of glue connecting tubes 42 arranged along the Y-axis direction. The glue connecting cylinder 41 is fixedly arranged on one side of the glue head assembly 22 and connected to the frame 3. The plurality of glue connecting tubes 42 are connected to the telescopic end of the glue connecting cylinder 41 through a glue connecting plate 43, so that the glue connecting tubes 42 are suspended above the assembly line 1 to prevent the glue connecting tubes 42 from affecting the flow of the workpiece 100 on the assembly line 1. The number and spacing of the glue connecting tubes 42 correspond to the number and spacing of the glue outlet nozzles 222, so that the glue connecting tubes 42 are used to receive the glue dripping from the glue outlet nozzles 222 when the glue outlet control valve 228 is closed.

[0053] The glue connecting plate 43 of this embodiment is connected to the output end of the glue connecting cylinder 41 by bolts, so the spacing between adjacent glue connecting tubes 42 is not adjustable. In order to adapt to the spacing between the glue head assemblies 22, the positions of the glue connecting tube 42 and the glue outlet nozzle 222 can be made corresponding by replacing the glue connecting plate 43 or adjusting the position of the glue head assembly 22 in the Y-axis direction.

[0054] Since the glue head assembly 22 of this embodiment is movable in the Y-axis direction and the Z-axis direction, each glue head assembly 22 needs to be connected to the glue supply device through a rubber hose, and accordingly, pneumatic components such as the glue discharge control valve 228 and the lifting cylinder 271 need to be connected to the air source such as the air compressor through an air pipe. If each glue discharge control valve 228 and the lifting cylinder 271 are directly connected to the glue supply device or the air source, a large number of pipelines will exist between the online glue dispenser and the glue supply device and the air source, and the large number of pipelines will be staggered during the movement of the glue head assembly 22. For this reason, a glue dispensing valve 28 and an air inlet connector 29 are provided at the top of the bracket 21.

[0055] The glue dispensing valve 28 is provided with a glue inlet 281, a plurality of glue outlets 282 and a main switch 283 arranged between the glue inlet 281 and the glue outlet 282. The main switch 283 is used to control the connection and disconnection between the glue inlet 281 and any glue outlet 282. The glue inlet 281 is used to connect to a glue supply device. The number of glue outlets 282 corresponds to the number of glue discharge control valves 228. Each glue outlet 282 is connected to an inlet end of a glue discharge control valve 282 through a hose (the hose is not shown in the figure), so that the inlet end of the glue discharge control valve 228 is indirectly connected to the glue supply device through the glue dispensing valve 28.

[0056] The air inlet connector 29 is provided with an air inlet 291 and a plurality of air outlets. The air inlet of the air inlet connector 29 is used to connect to an air source. Each air outlet of the air inlet connector 291 is connected to a pneumatic switch 292. Each pneumatic switch 292 is connected to a glue discharge control valve 228 or a lifting cylinder 271 via an air pipe (the air pipe is not shown in the figure), so that the pneumatic switch 292 is used to control the action of the glue discharge control valve 228 or the lifting cylinder 271.

[0057] In this embodiment, a large number of pipelines are confined within the online glue dispenser by arranging a glue dispensing valve 28 and an air inlet connector 29 at the top of the bracket 21, and only one total glue inlet pipe is required between the online glue dispenser and the glue supply device, and only one total air inlet pipe is required between the online glue dispenser and the air source, which can simplify the pipeline layout. In addition, the length of a large number of pipelines is shorter, and even if the pipelines are staggered, they are easier to separate.

[0058] The workpiece 100 of this embodiment is a display panel module with a plate-like structure, and the height of the surface bumps is relatively small, about within 2 mm. In other embodiments, the workpiece 100 may also be other parts, preferably a plate-like structure with a relatively small surface bump height.

[0059] The workflow of the present invention is as follows: The workpiece 100 is placed on the assembly line 1, and the assembly line 1 is started to drive the workpiece 100 to move along the X-axis direction. The first lifting mechanism 26, the second lifting mechanism 27, and the traverse motor 252 respectively operate to adjust the position of each glue head assembly 22 in the Y-axis and Z-axis directions. The workpiece 100 continues to move along the X-axis direction until the upper surface of the workpiece 100 abuts against the roller group 223 of the glue head assembly 22. The rollers of the roller group 223 roll on the upper surface of the workpiece 100 as the workpiece 100 moves, and automatically rise and fall with the concave and convex structure of the upper surface of the workpiece 100, so that the glue nozzle 222 is adaptively raised and lowered according to the structure of the workpiece 100. During the movement of the workpiece 100, the glue control valve 228 controls the glue nozzle 222 to discharge glue, and the glue drips on the preset glue dispensing area on the workpiece 100, thereby realizing online glue dispensing. When the glue does not need to drip onto the workpiece 100 , the glue cylinder 41 of the glue assembly 4 extends to move the glue tube 42 below the glue outlet nozzle 222 to prevent the glue from dripping onto the workpiece 100 .

[0060] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that the remaining undescribed portions are prior art, and that various changes made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims shall fall within the scope of protection of the present invention.

Claims

1. An online dispensing machine, characterized in that: include: The assembly line is used to transport the workpiece, the direction in which the assembly line transports the workpiece is defined as the X-axis direction, the width direction of the assembly line is defined as the Y-axis direction, and the direction perpendicular to the X-axis and the Y-axis is defined as the Z-axis direction; A glue dispensing device is arranged in the Z-axis direction of the assembly line, and is used to dispense glue to the workpiece located on the assembly line to realize online glue dispensing of the workpiece. The glue dispensing device includes a bracket and a plurality of glue head assemblies. Each of the glue head assemblies is connected to the bracket through a glue head mounting piece so that the glue head assembly is maintained above the assembly line. The plurality of glue head assemblies are arranged along the Y-axis direction, and the glue head assemblies and the glue head mounting piece form a connection that can be lifted and lowered along the Z-axis. Each of the glue head components includes an adjustment plate and a glue nozzle connected to the adjustment plate, the glue nozzle is used to supply colloid to the upper surface of the workpiece, the lower end of the adjustment plate is provided with a roller group for rolling on the upper surface of the workpiece, the adjustment plate is slidably connected to the glue head mounting member through an adjustment slider and an adjustment slide rail, the adjustment slide rail extends along the Z-axis direction, the roller group rolls along the upper surface of the workpiece and rises and falls with the structural changes of the upper surface of the workpiece, driving the adjustment plate and the glue nozzle to rise and fall along the adjustment slide rail, forming a connection where the glue head assembly can be raised and lowered along the Z-axis relative to the glue head mounting member, so that the glue nozzle can adaptively adjust the distance between it and the upper surface of the workpiece.

2. An online glue dispensing machine according to claim 1, characterized in that: The rubber head mounting member is provided with a stopper located below the adjusting slide rail, and the stopper is used to form a limiting structure for the downward movement of the adjusting slide block, thereby forming a movement limit for the rubber head assembly to descend under the action of gravity.

3. The online glue dispensing machine according to claim 2, characterized in that: A guide rod is provided at the upper end of the adjustment plate, one end of the guide rod is fixedly connected to the adjustment plate, the other end of the guide rod is passed through the guide hole of the rubber head mounting member, and a pre-tensioning spring is provided on the outer sleeve of the guide rod, the two ends of the pre-tensioning spring are respectively abutted against the adjustment plate and the rubber head mounting member, so that the elastic force of the pre-tensioning spring presses the roller group against the upper surface of the workpiece.

4. The online glue dispensing machine according to claim 1, characterized in that: The roller group includes a roller mounting frame and three rollers rollingly connected to the roller mounting frame, the three rollers are arranged in a triangle, the rollers include two large-diameter rollers and one small-diameter roller, the diameter of the small-diameter roller is smaller than that of the large-diameter roller, and one of the large-diameter rollers and the small-diameter roller is arranged at intervals on both sides of the glue outlet nozzle along the Y-axis direction, and the two large-diameter rollers are respectively arranged on both sides of the adjustment plate along the X-axis direction.

5. The online glue dispensing machine according to claim 1, characterized in that: The glue head assembly includes a glue discharging control valve connected to the adjustment plate, the inlet end of the glue discharging control valve is used to be connected to the glue supply device, and the outlet end of the glue discharging control valve is connected to the glue discharging nozzle, so as to control the intermittent glue discharging of the glue discharging nozzle.

6. The online glue dispensing machine according to claim 5, characterized in that: It also includes a glue connecting assembly arranged on one side of the glue head assembly along the X-axis direction, the glue connecting assembly includes a glue connecting cylinder and a plurality of glue connecting tubes arranged along the Y-axis direction, the glue connecting cylinder is fixedly arranged, and the plurality of glue connecting tubes are connected to the telescopic end of the glue connecting cylinder through a glue connecting plate, so that the glue connecting tubes are suspended above the assembly line, and the number and spacing of the glue connecting tubes correspond to the number and spacing of the glue outlet nozzles, so that the glue connecting tubes are used to receive the glue dripping from the glue outlet nozzle when the glue outlet control valve is closed.

7. The online glue dispensing machine according to claim 5, characterized in that: A colloid dispensing valve and an air inlet connector are provided at the top of the bracket. The colloid dispensing valve is provided with a glue inlet, a plurality of glue outlets and a master switch arranged between the glue inlet and the glue outlet. The master switch is used to control the on-off between the glue inlet and any of the glue outlets. The glue inlet is used to connect the glue supply device. The number of the glue outlets corresponds to the number of the glue outlet control valves. Each of the glue outlets is connected to an inlet end of the glue outlet control valve through a rubber hose, so that the inlet end of the glue outlet control valve is indirectly connected to the glue supply device through the colloid dispensing valve; each of the glue head components is also connected to a lifting cylinder. The air inlet connector is provided with an air inlet and a plurality of air outlets. The air inlet of the air inlet connector is used to connect to an air source. Each of the air outlets of the air inlet connector is connected to a pneumatic switch. Each of the pneumatic switches is connected to a glue outlet control valve or a lifting cylinder through an air pipe, so that the pneumatic switch is used to control the action of the glue outlet control valve or the lifting cylinder.

8. The online glue dispensing machine according to claim 1, characterized in that: The glue dispensing device also includes a transverse mounting plate extending along the Y-axis direction, the glue head mounting member is connected to the transverse mounting plate through a transverse connecting member, the transverse mounting plate is provided with a transverse slide rail, the transverse connecting member is provided with a transverse slider, the transverse slider forms a sliding connection with the transverse slide rail, so that the glue nozzle is formed to be movable along the Y-axis direction, the transverse connecting member is connected to a transverse motor, the output end of the transverse motor is provided with a transverse gear, the transverse mounting plate is provided with a transverse rack extending along the Y-axis direction, the transverse gear and the transverse rack are meshed, so that the rotation of the transverse motor drives the glue head assembly to move along the Y-axis direction, so as to adjust the spacing between the glue nozzles of adjacent glue head assemblies.

9. The online glue dispensing machine according to claim 8, characterized in that: The transverse moving mounting plate is connected to the bracket through a first lifting mechanism, and the glue head mounting piece is connected to the transverse moving connecting piece through a second lifting mechanism; the first lifting mechanism includes a lifting motor module, a first lifting slider and a first lifting rail extending along the Z-axis direction, the first lifting slider is connected to the transverse moving mounting plate, the first lifting rail is connected to the bracket, the output end of the lifting motor module is connected to the transverse moving mounting plate for driving the transverse moving mounting plate to rise and fall; the second lifting mechanism includes a lifting cylinder, a second lifting slider and a second lifting rail extending along the Z-axis direction, the second lifting slider is connected to the glue head mounting piece, the second lifting rail is connected to the transverse moving connecting piece, and the output end of the lifting cylinder is connected to the glue head mounting piece for driving the glue head mounting piece to rise and fall; thereby, the glue dispensing nozzle is formed by the first lifting mechanism and the second lifting mechanism to be able to rise and fall and move along the Z-axis direction, so as to adjust the height of the glue dispensing nozzle.

10. The online glue dispensing machine according to claim 1, characterized in that: The support of the dispensing device is fixedly arranged on a frame across the assembly line along the Y-axis direction. The assembly line moves the workpiece along the X-axis direction to form a relative movement between the glue head assembly and the workpiece.

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