Online dispensing machine for LCM (Liquid Crystal Module)

Abstract

The invention relates to the technical field of dispensing equipment, and particularly discloses an LCM (liquid crystal module) online dispensing machine which comprises a box seat and a plurality of dispensing mechanisms, a closed-loop conveying mechanism is arranged in a long kidney-shaped opening in the upper end of the box seat, a workpiece adjusting and positioning mechanism is arranged on the box seat, and a plurality of suction positioning assemblies are connected to the closed-loop conveying mechanism at equal intervals. The material suction positioning assembly comprises an end strip connected with the closed-loop conveying mechanism, the outer end of the end strip is fixedly connected with a material suction box base, a rubber layer is arranged on the upper surface of the material suction box base, a material suction hole communicated with an inner cavity of the material suction box base is formed in the rubber layer, and the lower surface of the material suction box base is communicated with an air suction cylinder extending into the box base. According to the online dispensing machine for the LCM, a manipulator does not need to be arranged for grabbing and transferring in the multi-procedure dispensing process, the problem that positioning is not accurate after a workpiece is transferred is effectively solved, streamlined efficient operation in the whole process is achieved, the dispensing precision of the LCM is guaranteed, and the dispensing efficiency of the LCM is improved.

Description

Technical Field

[0001] The invention relates to the technical field of glue dispensing equipment, and specifically discloses an LCM module online glue dispensing machine. Background Art

[0002] The LCM module is a display component that assembles a liquid crystal display device, a PCB circuit board, peripheral circuits such as control and drive, etc. During the production and processing of the LCM module, multiple dispensing operations are required, and the colloids at the joints of different components are also different, so a multi-step dispensing process is required.

[0003] The existing LCM module dispensing equipment mainly cooperates with the robot gripping and switching method to realize multi-process dispensing. However, the use of the robot gripping method is prone to inaccurate secondary material swinging, and secondary positioning is required, resulting in low dispensing efficiency. In addition, each dispensing station is equipped with a positioning mechanism, which makes the entire equipment structure complex and the manufacturing and operating costs are too high. In addition, there are also special fixtures that are used to position and clamp the LCM module, and then the special fixtures are transported so that they pass through multi-process dispensing equipment in turn to complete the dispensing process. Although this method can avoid the problem of inaccurate positioning during the secondary transfer of the workpiece, the special fixture can only be used for one type of LCM module, resulting in a narrow scope of application and cannot meet the dispensing processing of various types of LCM modules.

[0004] The invention patent with application number 2015106888069 discloses an online LCM dispensing machine, including a silver glue dispensing platform, a silver glue dispensing platform, a front IC gap glue spraying platform, a surface glue spraying platform, a surface glue spraying platform and a flip line glue platform in order from one end to the other end in the feeding direction. The front side of each platform is provided with a matching XZ handling robot for material transfer. The online LCM dispensing machine disclosed in this patent has the problem that it cannot ensure the precise positioning of the material after the material transfer and before the secondary dispensing process, resulting in poor dispensing accuracy and the need for secondary positioning. Therefore, in view of the shortcomings of the existing LCM module in the process of multi-process dispensing, the present application proposes an LCM module online dispensing machine that can effectively solve the above technical problems. Summary of the invention

[0005] The present invention aims to provide an LCM module online dispensing machine to solve the shortcomings of the existing LCM module in the process of performing multiple dispensing processes in sequence, such as inaccurate workpiece positioning, resulting in poor dispensing accuracy, or the use of special fixtures for positioning and clamping, resulting in a small scope of application.

[0006] The present invention is achieved through the following technical solutions: An LCM module online dispensing machine comprises a box seat and a plurality of dispensing mechanisms, a closed-loop conveying mechanism is arranged in a long waist-shaped opening at the upper end of the box seat, a plurality of the dispensing mechanisms are arranged side by side on one side of the box seat, and a workpiece adjustment and positioning mechanism is arranged on the box seat located upstream of the dispensing mechanism, and a plurality of suction and positioning components are connected to the closed-loop conveying mechanism at equal intervals; The material suction positioning assembly includes an end strip connected to the closed-loop conveying mechanism, the outer end of the end strip is fixedly connected to a material suction box seat, the upper surface of the material suction box seat is provided with a rubber skin layer, and the rubber skin layer is provided with a material suction hole connected to the inner cavity of the material suction box seat, the lower surface of the material suction box seat is connected to a vacuum cylinder extending into the box seat, the vacuum cylinder is connected with a sealing piston through a spring, the sealing piston is connected with a piston rod extending out of the lower end of the vacuum cylinder, the lower end of the piston rod is connected to a roller, and a guide block with a long waist-shaped opening in the middle is fixed in the box seat, and a guide ring groove that acts on the roller and realizes the up and down movement of the roller is provided on the groove wall of the long waist-shaped opening.

[0007] As a further setting of the above scheme, the guide ring groove is composed of a lower ring line segment, an oblique line segment, an upper straight line segment and a vertical line segment connected in sequence. The lower ring line segment corresponds to a row of dispensing mechanisms up and down, the upper straight line segment corresponds to the loading and unloading stations up and down, and the vertical line segment corresponds to the material suction positioning assembly up and down.

[0008] As a further configuration of the above scheme, the closed-loop conveying mechanism includes a top seat arranged in the long waist-shaped opening, and the top seat is fixedly connected to the bottom of the box seat through supporting legs, both ends of the top seat are rotatably connected to transmission wheels, and the end of one of the transmission wheels is connected to a driving device, and a conveying transmission member connected to the end bar is arranged between the two transmission wheels.

[0009] As a further configuration of the above scheme, the transmission wheel is one of a belt pulley or a sprocket, and the conveying transmission member is one of a transmission belt or a transmission chain.

[0010] As a further configuration of the above scheme, a closed-loop roller groove is provided on the upper surface of the top seat located at the periphery of the conveying transmission member, and a guide wheel that interacts with the closed-loop roller groove is rotatably provided on the end bar.

[0011] As a further configuration of the above scheme, the workpiece adjustment and positioning mechanism includes a lifting seat arranged directly above the circulating moving path of the suction box seat and a telescopic driving member for driving the lifting seat to move up and down, and the lower surface of the suction box seat is provided with a pair of first positioning inclined plane blocks in the longitudinal direction and a pair of second positioning inclined plane blocks in the transverse direction, and the inclined planes on the first positioning inclined plane blocks and the second positioning inclined plane blocks are both arranged toward the center of the lifting seat.

[0012] As a further configuration of the above scheme, a longitudinal groove and a transverse groove are provided in the lifting seat, and two bidirectional screw rods which are offset up and down are provided in the longitudinal groove and the transverse groove, and one end of the two bidirectional screw rods is connected to a screw motor, and the first positioning bevel block and the second positioning bevel block are both provided with screw hole connecting blocks which act on the corresponding bidirectional screw rods.

[0013] As a further configuration of the above solution, the suction holes are opened at four corners and a middle position of the rubber skin layer.

[0014] During the operation of the LCM module online dispensing machine disclosed in the present invention, a robot grabs the LCM modules one by one at the loading and unloading stations and places them on the upper surface of the suction box seat in the suction positioning assembly, and the suction positioning assembly is transported under the action of the closed-loop conveying mechanism. When it is transported to the position of the workpiece adjustment and positioning mechanism, the workpiece adjustment and positioning mechanism first adjusts and centers the placed LCM module, and then in the process of continuing to move, the sealing piston is quickly pushed downward along the vacuum cylinder through the action of the roller, the guide ring groove and the spring, thereby forming a negative pressure in the inner cavity of the suction box seat, and the LCM module can be adsorbed and fixed through the suction hole under the negative pressure environment.

[0015] After the LCM module is adsorbed and fixed, it continues to be transported and moved, and passes through a row of dispensing mechanisms in turn during the movement, and the corresponding colloids are applied to the LCM module through a row of dispensing mechanisms. After the dispensing is completed, it moves to the loading and unloading station in a circular manner. At this time, under the action of the roller and the guide ring groove, the sealing piston will slowly move upward to restore the internal air pressure of the suction box seat to the initial state, and then the robot will grab it at the loading and unloading station and put a new LCM module.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The LCM module online dispensing machine disclosed in the present invention drives all the suction and positioning components to move in a loop through a closed-loop conveying mechanism, and successively realizes the loading, adjustment and positioning, adsorption and fixation, and multi-process dispensing of the LCM module during the movement, so that there is no need to set up a robot for grasping and transferring during the multi-process dispensing process, which effectively avoids the problem of inaccurate positioning of the workpiece after the transfer, realizes the whole process of streamlined and efficient operation, ensures the dispensing accuracy of the LCM module, and improves the dispensing efficiency of the LCM module.

[0017] The present invention adopts a suction positioning component to use the LCM module as a carrier to replace the traditional method of using a special fixture, and cooperates with the design of the workpiece adjustment and positioning mechanism, so that after the LCM module is placed on the upper surface of the suction box seat, its position is adjusted and positioned by the workpiece adjustment and positioning mechanism, which effectively ensures the accuracy of the workpiece position before dispensing. At the same time, the workpiece adjustment and positioning mechanism can be quickly adjusted according to the size of the LCM module, so that it can accurately position various types of LCM modules, effectively improving the application range of the entire LCM module online dispensing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure from a first angle of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure from a second angle of the present invention; Figure 3 It is a schematic diagram of the internal three-dimensional structure of the box seat in the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the closed-loop conveying mechanism and the material suction and positioning assembly in the present invention; Figure 5 It is a schematic diagram of the external three-dimensional structure of the material suction and positioning assembly in the present invention; Figure 6 It is a schematic diagram of a partial internal three-dimensional structure of the material suction and positioning assembly in the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the workpiece adjustment and positioning mechanism in Example 2 of the present invention. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 7 , and describes the application in detail with reference to embodiments. Example 1

[0022] Example 1 discloses an LCM module online dispensing machine, see the attached Figure 1 and attached Figure 2 The main body of the glue dispensing machine includes a box seat 1, a control box 2, a workpiece adjustment and positioning mechanism 3, and a plurality of glue dispensing mechanisms 4 arranged in sequence. A long waist-shaped opening 100 is provided on the upper surface of the box seat 1, a closed-loop conveying mechanism 5 is provided in the long waist-shaped opening, and then a plurality of suction and positioning components 6 are arranged at equal intervals on the closed-loop conveying mechanism 5, and a plurality of glue dispensing mechanisms 4 are arranged side by side on one side of the long waist-shaped opening 100, and the interval between them is equal to the interval between two adjacent suction and positioning components 6. The box seat 1 is arranged on the front side of the box seat 1, and a control module for controlling the entire glue dispensing machine is integrated therein, and the workpiece adjustment and positioning mechanism 3 is arranged just above the side end of the long waist-shaped opening 100 on the opposite side of a row of glue dispensing mechanisms 4. The specific glue dispensing mechanism 4 is a conventional technical solution, adopting an XY axis movement design, and is not described in detail in this embodiment.

[0023] Reference Figure 3 and attached Figure 4 The closed-loop conveying mechanism 5 includes a top seat 501 centrally arranged in the long waist-shaped opening 100, and the shape of the top seat 501 is also long waist-shaped, so that a closed waist-shaped loop is formed between the top seat 501 and the long waist-shaped opening 100. Support legs 502 extending into the box seat 1 and fixed to the bottom of the box seat 1 are arranged on the lower surfaces of both ends of the top seat 501. A transmission wheel 503 is rotatably connected to both ends of the top seat 501, and the lower end of the wheel axle of one of the transmission wheels 503 is connected to a driving device 504 fixed to the lower surface of the top seat 501, and then a conveying transmission member 505 is arranged between the two transmission wheels 503, so that the conveying transmission member 505 can move at a set speed under the action of the driving device 504. The specific transmission wheel 503 can be a pulley or a sprocket, and the conveying transmission member 505 adopts a transmission belt or a transmission chain accordingly. In addition, a closed-loop roller groove 506 parallel to the waist-shaped ring is opened on the upper surface of the top seat 501 outside the conveying transmission member 505, and then a plurality of suction positioning components 6 are connected to the conveying transmission member 505 at equal intervals, and the guide wheels on the suction positioning components 6 interact with the closed-loop roller groove 506, so that under the action of the conveying transmission member 505, the plurality of suction positioning components 6 can move synchronously and at a uniform speed.

[0024] Reference Figure 3 , Attachment Figure 5 and attached Figure 6The suction positioning assembly 6 includes an end strip 601 connected to the conveying transmission member 505, a guide wheel 602 that interacts with the closed-loop roller groove 506 is rotatably arranged on the lower surface of the end strip 601, and a suction box seat 603 is fixedly connected to the outer end of the end strip 601. The suction box seat 603 is rectangular, and the length and width are both smaller than the size design of the LCM module. The upper surface of the suction box seat 603 is provided with a rubber skin layer 604, and the upper surface of the rubber skin layer 604 is provided with suction holes 605 that are connected to the inner cavity of the suction box seat 603. When designing the specific suction holes 605, in order to ensure that the LCM module can be fully adsorbed and fixed, a plurality of suction holes 605 are respectively arranged in the middle and four corners of the rubber skin layer 604.

[0025] A vertical downward suction cylinder 606 is arranged at the center of the lower surface of the suction box seat 603, and a sealing piston 607 is arranged in the suction cylinder 606, and then a piston rod 608 that penetrates the lower end of the suction cylinder 606 is connected to the sealing piston 607, and a spring 609 is arranged between the sealing piston 607 and the bottom of the suction cylinder 606, and the sealing piston 607 can be positioned at the bottom of the suction cylinder 606 as much as possible under the tension of the spring 609. An end block 610 is connected to the bottom of the piston rod 608 extending out of the suction cylinder 606, and then a roller 611 arranged toward the side wall of the box seat 1 is rotatably connected to the end block 610. At the same time, a guide block 101 is fixed on the inner wall of the box seat 1, and a long waist-shaped opening 102 aligned with the long waist-shaped opening 100 is opened in the middle of the guide block 101, and a guide ring groove 103 that interacts with the roller 611 is opened on the groove wall of the long waist-shaped opening 102. The guide ring groove 103 is composed of a lower ring line segment 1031, an oblique line segment 1032, an upper straight line segment 1033 and a vertical line segment 1034 connected in sequence, and a row of dispensing mechanisms 4 corresponds to the lower ring line segment 1031 up and down, the upper straight line segment 1033 corresponds to the loading and unloading stations of the LCM module, and the vertical line segment 1034 corresponds to the station of the workpiece adjustment and positioning mechanism 3.

[0026] During the operation of the LCM module online dispensing machine disclosed in this embodiment 1, the LCM modules are placed one by one on the upper surface of the rubber cortex 604 by a robot or manually. At this time, the roller 611 in the material suction and positioning component 6 interacts with the upper straight segment 1033. After the loading is completed, it moves to the workpiece adjustment and positioning mechanism 3 along with the conveying transmission member 505, and then the workpiece adjustment and positioning mechanism 3 adjusts and positions the LCM module placed on the rubber cortex 604 to ensure the accurate positioning of the LCM module before dispensing.

[0027] When the LCM module continues to move after positioning, the roller will immediately enter the vertical line segment 1034, and then the spring 609 will release its elastic potential energy to make the sealing piston 607 and the piston rod 608 move downward rapidly. At this time, the internal air pressure of the entire suction box seat 603 will decrease instantly, and then the LCM module will be adsorbed and fixed on the upper surface of the rubber cortex 604 under the action of the internal and external pressure difference, thereby ensuring that the LCM module will not move during the subsequent mobile dispensing and movement process.

[0028] Then, the LCM module fixed by adsorption will pass through a row of dispensing mechanisms 4 in sequence with the suction and positioning assembly 6 to complete the corresponding dispensing process. After the dispensing is completed, it will continue to move and reset in a cycle. Then, when the suction and positioning assembly 6 passes through the oblique line segment 1032, the sealing piston 607 and the piston rod 608 gradually move upward, so that the internal air pressure of the suction box seat 603 returns to normal. Finally, it moves to the initial station and is taken away by the robot, and the workpiece to be dispensed is placed on it. Example 2

[0029] Example 2 discloses an LCM module online dispensing machine that is further improved and designed based on the technical solution in Example 1, and the similarities between it and Example 1 are not described again.

[0030] The key design of this embodiment 2 is the special design of the workpiece adjustment and positioning mechanism 3. Figure 7 The workpiece adjustment and positioning mechanism 3 in this embodiment includes a bracket 301 fixed on the box seat 1, and a telescopic driving member 302 is arranged at the upper end of the bracket 301. The telescopic driving member 302 preferably uses a cylinder, and then a lifting seat 303 located directly above the circulating moving path of the suction box seat 603 is connected to the lower end of the telescopic driving member 302. A longitudinal groove and a transverse groove are opened in the lifting seat 303, and a bidirectional screw rod 304 is rotatably arranged in the longitudinal groove and the transverse groove, and the two bidirectional screw rods 304 are staggered up and down, and then a screw motor 305 fixed to the side end of the lifting seat 303 is connected to one end of each bidirectional screw rod 304.

[0031] A pair of first positioning bevel blocks 306 and a pair of second positioning bevel blocks 307 are arranged on the lower surface of the lifting seat 303, and the first positioning bevel blocks 306 and the second positioning bevel blocks 307 are both provided with screw hole connection blocks that interact with the bidirectional screw rod 304. The two first positioning bevel blocks 306 are arranged at the front and rear ends in a mirror-symmetrical manner, and the bevel faces the middle of the lifting seat 303, and the two second positioning bevel blocks 307 are arranged at the left and right ends in a mirror-symmetrical manner, and the bevel faces are also arranged at the middle of the lifting seat 303. During the descent of the lifting seat 303, the LCM module placed on the upper surface of the suction box seat 603 will be affected by the first positioning bevel block 306 and the second positioning bevel block 307 at the same time. The LCM module can be adjusted in the longitudinal and lateral directions through the squeezing and pushing action of the bevel, thereby realizing the precise positioning of the LCM module. In addition, when used for LCM modules of different models, the corresponding screw motor 305 can be controlled to rotate forward and reverse, and then the relative distance between the two first positioning bevel blocks 306 and the two second positioning bevel blocks 307 can be adjusted, so that it can meet the precise positioning of LCM modules of different sizes before dispensing, giving it a wider range of applications.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An LCM module online dispensing machine, comprising a box seat and a plurality of dispensing mechanisms, characterized in that: A closed-loop conveying mechanism is arranged in the long waist-shaped opening at the upper end of the box seat, a plurality of the dispensing mechanisms are arranged side by side on one side of the box seat, and a workpiece adjustment and positioning mechanism is arranged on the box seat located upstream of the dispensing mechanism, and a plurality of suction and positioning components are connected to the closed-loop conveying mechanism at equal intervals; The material suction positioning assembly includes an end strip connected to the closed-loop conveying mechanism, the outer end of the end strip is fixedly connected to a material suction box seat, the upper surface of the material suction box seat is provided with a rubber skin layer, and the rubber skin layer is provided with a material suction hole connected to the inner cavity of the material suction box seat, the lower surface of the material suction box seat is connected to a vacuum cylinder extending into the box seat, the vacuum cylinder is connected with a sealing piston through a spring, the sealing piston is connected with a piston rod extending out of the lower end of the vacuum cylinder, the lower end of the piston rod is connected to a roller, and a guide block with a long waist-shaped opening in the middle is fixed in the box seat, and a guide ring groove that acts on the roller and realizes the up and down movement of the roller is provided on the groove wall of the long waist-shaped opening.

2. The LCM module online dispensing machine according to claim 1, characterized in that: The guide ring groove is composed of a lower ring line segment, an oblique line segment, an upper straight line segment and a vertical line segment connected in sequence. The lower ring line segment corresponds to a row of dispensing mechanisms up and down, the upper straight line segment corresponds to the loading and unloading stations up and down, and the vertical line segment corresponds to the material suction positioning assembly up and down.

3. The LCM module online dispensing machine according to claim 1, characterized in that: The closed-loop conveying mechanism includes a top seat arranged in a long waist-shaped opening, and the top seat is fixedly connected to the bottom of the box seat through supporting legs, both ends of the top seat are rotatably connected to transmission wheels, and the end of one of the transmission wheels is connected to a driving device, and a conveying transmission member connected to the end bar is arranged between the two transmission wheels.

4. The LCM module online dispensing machine according to claim 3, characterized in that: The transmission wheel is one of a belt pulley and a sprocket, and the conveying transmission member is one of a transmission belt and a transmission chain.

5. The LCM module online dispensing machine according to claim 3, characterized in that: A closed-loop roller groove is provided on the upper surface of the top seat located at the periphery of the conveying transmission member, and a guide wheel that acts with the closed-loop roller groove is rotatably provided on the end bar.

6. The LCM module online dispensing machine according to claim 1, characterized in that: The workpiece adjustment and positioning mechanism includes a lifting seat arranged directly above the circulating moving path of the suction box seat and a telescopic driving member for driving the lifting seat to move up and down. The lower surface of the suction box seat is provided with a pair of first positioning inclined plane blocks in the longitudinal direction and a pair of second positioning inclined plane blocks in the transverse direction. The inclined planes on the first positioning inclined plane blocks and the second positioning inclined plane blocks are both arranged toward the center of the lifting seat.

7. The LCM module online dispensing machine according to claim 6, characterized in that: The lifting seat is provided with a longitudinal groove and a transverse groove, and two bidirectional screw rods are arranged in the longitudinal groove and the transverse groove, and one end of the two bidirectional screw rods is connected to a screw motor, and the first positioning bevel block and the second positioning bevel block are provided with screw hole connecting blocks that act on the corresponding bidirectional screw rods.

8. The LCM module online dispensing machine according to claim 1, characterized in that: The material suction holes are arranged at four corners and a middle position of the rubber skin layer.

Images