Precise glue pouring machine equipment and production process thereof

Abstract

Precise glue pouring machine equipment comprises a rack, a feeding mechanism, a visual positioning mechanism, a multi-head glue discharging mechanism, a three-axis driving mechanism, a glue wiping mechanism and a glue head detection mechanism. The feeding mechanism is mounted on the rack; the three-axis driving mechanism is positioned above the feeding mechanism; the visual positioning mechanism and the multi-head glue discharging mechanism are mounted on the three-axis driving mechanism; the multi-head glue discharging mechanism comprises a plurality of dispensing heads which are arranged side by side and can be independently subjected to three-axis fine adjustment; the frictioning mechanism is used for frictioning and cleaning each dispensing head; and the glue head detection mechanism is used for detecting the position of each dispensing head. Therefore, the plurality of dispensing heads are arranged, so that the batch glue filling operation can be realized, and the production efficiency is greatly improved; and the glue head detection mechanism is arranged, whether the height and the horizontal position of each glue dispensing head deviate or not can be automatically and rapidly detected, then manual fine adjustment is conducted through manual intervention, eccentricity is corrected in time, gluing of a product lamp tube can be avoided, the product yield is increased, and the product quality is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of glue filling machines, in particular to precision glue filling machine equipment and a production process thereof. Background Art

[0002] Glue filling machine is an automated machine that controls fluids and drips, coats, and fills liquids on the surface or inside of products to achieve sealing, fixing, waterproofing, and other functions. Glue filling machine is required for LED display screen processing.

[0003] The existing glue dispensing machines for LED display screens usually have only one glue dispensing head. For some small-pitch display screen products, due to their product characteristics, the distance between lamp tubes is small, the diameter of the glue needle of a single glue dispensing head is small, and the glue output is low, resulting in low glue dispensing efficiency, which is not conducive to improving production efficiency.

[0004] However, if the glue dispensing head of the glue filling machine is simply set to multiple, there will be a problem that each glue dispensing needle tube is not monitored, that is, the front and back, left and right, high and low positions of each glue dispensing needle tube are prone to deviations, which will cause the product lamp tube to stick and reduce the product yield. Therefore, it is necessary to calibrate each glue dispensing head regularly.

[0005] However, it is difficult to correct abnormalities of multiple dispensing heads. For existing single-head dispensing machines, when the dispensing heads are abnormally replaced and aligned, mechanical coordinate offset is used to correct the offset of the dispensing heads. However, the directions of the offsets of multiple dispensing heads cannot be unified, resulting in the inability of the mechanical coordinate program compensation function to achieve centering compensation for multiple dispensing heads. Summary of the invention

[0006] The purpose of the present invention is to provide a precision glue dispensing machine and a production process thereof, so as to overcome the defects of the prior art and have the advantages of improving production efficiency and product quality.

[0007] In order to achieve the above object, the solution of the present invention is: A precision glue filling machine comprises a frame, a feeding mechanism, a visual positioning mechanism, a multi-head glue discharging mechanism, a three-axis driving mechanism, a glue wiping mechanism and a glue head detection mechanism; The feeding mechanism is installed on the frame, and a glue pouring station is provided in the feeding mechanism, and a limiting mechanism for limiting and fixing the workpiece is provided at the glue pouring station; The three-axis driving mechanism is located above the feeding mechanism, and the visual positioning mechanism and the multi-head glue discharging mechanism are installed on the three-axis driving mechanism to drive the visual positioning mechanism and the multi-head glue discharging mechanism to perform three-axis movement; The multi-head glue dispensing mechanism includes a plurality of glue dispensing heads arranged side by side and capable of independently performing three-axis fine adjustment; The glue erasing mechanism and the glue head detection mechanism are located on one side of the feeding mechanism; The glue erasing mechanism is used to clean the glue dispensing heads; The glue head detection mechanism includes a height sensor and a centering detection component; The height sensor includes a detection end that can be extended and retracted up and down, and is used to detect the height of each dispensing head; the centering detection component includes a left and right position sensor and a front and back position sensor, which are used to detect the horizontal position of the dispensing head.

[0008] Furthermore, the glue head detection mechanism includes a plurality of centering detection components arranged side by side, and the number of the centering detection components and the spacing between them are consistent with those of the glue dispensing heads of the multi-head glue dispensing mechanism.

[0009] Furthermore, the centering detection component also includes a detection window, and the left and right position sensors and the front and rear position sensors are both optical fiber sensors and are arranged in the detection window.

[0010] Furthermore, the multi-head glue dispensing mechanism also includes a glue head mounting seat and multiple glue head adjustment platforms; the number of the glue head adjustment platforms corresponds to the number of the glue dispensing heads, and the glue dispensing heads are installed on the glue head mounting seat through the glue head adjustment platforms to drive the glue dispensing heads to perform three-axis fine-tuning; the glue head mounting seat is installed and connected to the three-axis drive mechanism.

[0011] Furthermore, the two lateral ends of the feeding mechanism are respectively a feeding end and a discharging end; the feeding mechanism comprises two conveyor belts spaced apart longitudinally, and the workpiece is mounted between the two conveyor belts and driven to move laterally.

[0012] Furthermore, the limiting mechanism is provided at the glue filling station between the two conveyor belts, and the limiting mechanism includes a transverse blocking component, and the transverse blocking component includes a transverse block and a vertical motor, and the vertical motor drives the transverse block to move up and down.

[0013] Furthermore, the limiting mechanism also includes a longitudinal clamping assembly, which includes a longitudinal stopper, a longitudinal clamping block and a longitudinal cylinder. The longitudinal stopper and the longitudinal clamping block are respectively arranged on the longitudinal outer sides of the two conveyor belts, and the longitudinal cylinder drives the longitudinal clamping block to move longitudinally.

[0014] Furthermore, the feeding mechanism is installed on the frame table, and one of the conveyor belts is installed on the longitudinal guide rail arranged on the table so as to be able to move longitudinally and be positioned.

[0015] Furthermore, it also includes a control mechanism, which includes a control module, a display module and an input module; the control module is electrically connected to the display module, the input module, the feeding mechanism, the visual positioning mechanism, the multi-head glue discharging mechanism, the three-axis driving mechanism, the glue erasing mechanism and the glue head detection mechanism, respectively, the display module is used to display information, the input module is used to input information, the control module is used to identify the workpiece on the feeding mechanism through the visual positioning mechanism, and set the operating program, and control the feeding mechanism, the multi-head glue discharging mechanism, the three-axis driving mechanism, the glue erasing mechanism and the glue head detection mechanism to perform actions according to the operating program.

[0016] The present invention also provides a production process using the precision glue filling machine equipment, which is characterized by comprising the following steps: S1: Workpiece feeding: feeding the workpiece to the glue filling station of the feeding mechanism, and fixing the workpiece by the limiting mechanism; S2: Detect the workpiece position; the three-axis drive mechanism drives the visual positioning mechanism to move to the vicinity of the workpiece MARK point to take pictures, so as to identify and locate the workpiece position and obtain an initial glue filling position on one side of the workpiece; S3: The multi-head glue dispensing mechanism wipes and cleans the glue; the three-axis driving mechanism drives each glue dispensing head of the multi-head glue dispensing mechanism to move to the glue wiping mechanism for glue wiping and cleaning; S4: The multi-head glue dispensing mechanism starts to dispense glue; the workpiece is divided into a plurality of side-by-side areas according to the number of glue dispensing heads on the multi-head glue dispensing mechanism and the spacing between adjacent glue dispensing heads, and then the first glue dispensing head on the same side as the initial glue dispensing position is driven by the three-axis driving mechanism to dispense glue from the initial glue dispensing position, while the remaining side-by-side glue dispensing heads synchronously follow to dispense glue, thereby making each glue dispensing head of the multi-head glue dispensing mechanism synchronously perform independent glue dispensing operations on the corresponding areas; S5: Workpiece discharging: After the glue filling is completed, the workpiece is discharged from the feeding mechanism to complete the glue filling operation of one workpiece; S6: Repeat steps S1-S5 for a predetermined number of times to achieve automatic glue filling for a predetermined number of workpieces, and then proceed to step S7; S7: Glue dispensing head detection and correction; the three-axis drive mechanism drives each glue dispensing head of the multi-head glue dispensing mechanism to the glue head detection mechanism's height sensor and centering detection component for height and horizontal position detection. If the height of the glue dispensing head needle tube is inconsistent and / or the horizontal position of the needle tube is offset, manual intervention is performed to perform abnormal correction and adjustment on the glue dispensing head; after the correction is completed, return to step S1 to continue the glue filling production.

[0017] Furthermore, the step S7 of dispensing head detection and calibration includes the following specific steps: S71, detection and calibration starts; S72, perform height detection of the dispensing head needle; the three-axis driving mechanism drives one of the dispensing heads of the multi-head dispensing mechanism to move to above the height sensor; the three-axis driving mechanism drives the dispensing head to descend to a predetermined height, and during the descent, it contacts the detection end of the pressure height sensor to obtain the current height of the dispensing head needle, calculates the difference between the detected dispensing head height and the preset dispensing head height and records it as the height deviation, if the height deviation is within the height setting range, then enters step S73, otherwise, the height is adjusted to within the height setting range through manual fine-tuning, and then enters step S73; S73, repeat step S72 until the height of each glue dispensing head of the multi-head glue dispensing mechanism is detected and calibrated, and then enter step S74; S74, performing horizontal position detection of the needle tube of the dispensing head; S741, detection of the left and right position of the dispensing head needle; the three-axis drive mechanism drives the dispensing head of the multi-head dispensing mechanism to move and extend into the detection area of ​​the left and right position sensor in the detection window of the centering detection component to obtain the current left and right offset of the dispensing head. The left and right offset of the dispensing head is the horizontal left and right spacing between the dispensing head and the left and right position sensor during detection. If the coordinate position of the dispensing head is not within the left and right setting range, the dispensing head needle is adjusted to the left and right setting range through manual fine-tuning. Otherwise, the dispensing head needle is not corrected left and right; S742, front and rear position detection of the dispensing head needle; the three-axis drive mechanism drives the dispensing head of the multi-head dispensing mechanism to move and extend into the detection area of ​​the front and rear position sensor in the detection window of the centering detection component to obtain the current front and rear offset of the dispensing head. The front and rear offset of the dispensing head is the horizontal front and rear spacing between the dispensing head and the front and rear position sensor during detection. If the coordinate position of the dispensing head is not within the front and rear setting range, the dispensing head needle is adjusted to the front and rear setting range through manual fine-tuning. Otherwise, the dispensing head needle is not corrected front and rear; The execution order of the above steps S741 and S742 is not limited; S75, detection and calibration are completed.

[0018] After adopting the above technical solution, by setting up multiple glue dispensing heads, batch glue filling operations can be realized, greatly improving production efficiency; and the precision glue filling machine is also equipped with a glue head detection mechanism, which can automatically and quickly detect whether the height and horizontal position of each glue dispensing head are offset, and then manually fine-tune it through human intervention, and correct it in time if eccentricity occurs, to ensure that there is no deviation in the position of each glue dispensing head, which can avoid sticking of product lamp tubes, improve product yield, and ensure product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of an embodiment of the present invention; Figure 2 for Figure 1 A magnified image of point A; Figure 3 A front view of an embodiment of the present invention; Figure 4 It is a three-dimensional diagram of a three-axis driving mechanism and a multi-head dispensing mechanism of an embodiment of the present invention; Figure 5 It is a schematic diagram of a feeding mechanism, a glue head detection mechanism and a frame machine according to an embodiment of the present invention; Figure 6 It is a schematic diagram of a centering detection component according to an embodiment of the present invention.

[0020] Description of reference numerals: glue filling machine equipment 1, frame 10, table 11, longitudinal guide rail 12; Feeding mechanism 20, glue filling station 21, limiting mechanism 22, transverse blocking assembly 221, transverse block 2211, vertical motor 2212, longitudinal clamping assembly 222, longitudinal block 2221, longitudinal clamping block 2222, longitudinal cylinder 2223; Feed end 23, discharge end 24, conveyor belt 25; Visual positioning mechanism 30; Multi-head glue dispensing mechanism 40, glue dispensing head 41, needle tube 411, glue head mounting seat 42, glue head adjustment platform 43, X-axis slide 431, Y-axis slide 432, Z-axis slide 433; Three-axis driving mechanism 50; Glue erasing mechanism 60; The glue head detection mechanism 70, the height sensor 71, the detection end 711, the centering detection component 72, and the detection window 721; Control mechanism 80, display module 81, input module 82; Workpiece 2, front and rear offset of the dispensing head A, left and right offset of the dispensing head B. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, 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 part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] like Figures 1 to 5 As shown, a precision glue filling machine device 1 of this embodiment includes a frame 10, a feeding mechanism 20, a visual positioning mechanism 30, a multi-head glue discharging mechanism 40, a three-axis driving mechanism 50, a glue erasing mechanism 60, a glue head detection mechanism 70 and a control mechanism 80.

[0023] The feeding mechanism 20 is installed on the frame 10 , and a glue pouring station 21 is provided in the feeding mechanism 20 . A limiting mechanism 22 for limiting and fixing the workpiece 2 is provided at the glue pouring station 21 .

[0024] The right and left ends of the feeding mechanism 20 in the present embodiment are respectively a feeding end 23 and a discharging end 24; the feeding mechanism 20 includes two conveyor belts 25 arranged at intervals in the longitudinal direction, and the workpiece 2 is set between the two conveyor belts 25, and the workpiece 2 is driven to move horizontally, so as to realize the feeding and discharging of the workpiece 2. The workpiece 2 in the present embodiment takes an LED display screen as an example, and the glue filling machine equipment 1 is used to fill glue and fix the gaps between the lamp tubes on the LED display screen.

[0025] See also Figure 5 The limiting mechanism 22 is set at the glue filling station 21 between the two conveyor belts 25. The limiting mechanism 22 includes a transverse blocking component 221. The transverse blocking component 221 includes a transverse block 2211 and a vertical motor 2212. The vertical motor 2212 drives the transverse block 2211 to move up and down. Therefore, when the conveyor belt 25 drives the workpiece 2 to move from right to left to the glue filling station 21, the transverse block 2211 rises to block the workpiece 2 to prevent the workpiece 2 from continuing to move. After the glue filling is completed, the transverse block 2211 descends, and the conveyor belt 25 drives the workpiece 2 to discharge.

[0026] Moreover, the limiting mechanism 22 also includes a longitudinal clamping assembly 222, which includes a longitudinal stop block 2221, a longitudinal clamping block 2222 and a longitudinal cylinder 2223. The longitudinal stop block 2221 and the longitudinal clamping block 2222 are respectively arranged on the longitudinal outer sides of the two conveyor belts 25, and the longitudinal cylinder 2223 drives the longitudinal clamping block 2222 to move longitudinally. Therefore, when the transverse stop block 2211 blocks the workpiece 2, the longitudinal clamping block 2222 can move longitudinally to clamp the workpiece 2 between the longitudinal clamping block 2222 and the longitudinal stop block 2221, thereby fixing the workpiece 2, facilitating the glue filling operation of each dispensing head 41 of the multi-head glue filling machine, and improving the stability of the glue filling.

[0027] In this embodiment, the feeding mechanism 20 is installed on the table top 11 of the frame 10, and a conveyor belt 25 on the longitudinal rear side can be longitudinally moved and positioned on the longitudinal guide rail 12 provided on the table top 11. Therefore, the longitudinal position of the conveyor belt 25 can be adjusted, and then the distance between the two conveyor belts 25 can be adjusted to adapt to workpieces 2 of different sizes, thereby improving the practicability of the equipment.

[0028] In this embodiment, the three-axis driving mechanism 50 is installed on the frame 10 and is located above the feeding mechanism 20. Figure 4The visual positioning mechanism 30 and the multi-head glue discharging mechanism 40 are installed on the three-axis driving mechanism 50, which is used to drive the visual positioning mechanism 30 and the multi-head glue discharging mechanism 40 to perform three-axis movement; the three-axis driving mechanism 50 can refer to the structure of the existing three-axis module, and the three-axis driving mechanism 50 can drive the visual positioning mechanism 30 and the multi-head glue discharging mechanism 40 to move to the target position according to the set spatial coordinates, and the operation is flexible and convenient.

[0029] like Figure 2 As shown, the multi-head glue dispensing mechanism 40 includes a plurality of glue dispensing heads 41 which are arranged side by side and can independently perform three-axis fine-tuning. By providing a plurality of glue dispensing heads 41, the glue filling efficiency can be greatly improved, especially for display screens with small pitch. The plurality of glue dispensing heads 41 can realize batch glue filling operations and improve the glue filling efficiency. In this embodiment, the multi-head glue dispensing mechanism 40 is provided with five glue dispensing heads 41 which are arranged side by side in a horizontal direction.

[0030] See also Figure 4 As shown, the multi-head glue dispensing mechanism 40 also includes a glue head mounting seat 42 and multiple glue head adjustment platforms 43; the number of the glue head adjustment platforms 43 corresponds to the number of the glue dispensing heads 41, and the glue dispensing heads 41 are installed on the glue head mounting seat 42 through the glue head adjustment platforms 43. The glue head adjustment platform 43 can be composed of an X-axis slide 431, a Y-axis slide 432 and a Z-axis slide 433. The X-axis slide 431 is used to control the horizontal left and right movement of the glue dispensing head 41, the Y-axis slide 432 is used to control the longitudinal forward and backward movement of the glue dispensing head 41, and the Z-axis slide 433 is used to control the vertical upward and downward movement of the glue dispensing head 41. The overall combined glue head adjustment platform is used to drive the glue dispensing head 41 to conveniently and quickly perform three-axis fine-tuning.

[0031] The glue head mounting seat 42 is mounted and connected to the three-axis driving mechanism 50 , and the three-axis driving mechanism 50 drives the glue head mounting seat 42 and each glue dispensing head 41 on the glue head mounting seat 42 to move.

[0032] The visual positioning mechanism 30 can be installed on one side of the rubber head mounting seat 42 and can move together with the rubber head mounting seat 42. The visual positioning mechanism 30 is used to perform a photo recognition operation.

[0033] like Figure 1 and Figure 2 The glue erasing mechanism 60 and the glue head detecting mechanism 70 are located on one side of the feeding mechanism 20 . In this embodiment, the glue erasing mechanism 60 is located on the front side of the feeding mechanism 20 in the longitudinal direction.

[0034] The glue erasing mechanism 60 has the same principle as the existing glue erasing mechanism and can be configured with reference to the existing glue erasing mechanism. It is mainly used to erase and clean each glue dispensing head 41 to avoid clogging of the glue dispensing head 41 and improve the glue filling effect.

[0035] The glue head detection mechanism 70 includes a height sensor 71 and a centering detection component 72; the height sensor 71 includes a detection end 711 that can be extended up and down, and is used to detect the height of each glue dispensing head 41; Figure 6 The centering detection component 72 includes a left-right position sensor 722 and a front-back position sensor 723 , which are used to detect the horizontal position of the dispensing head 41 .

[0036] Thus, the present embodiment can realize batch glue filling operation by setting a plurality of glue dispensing heads 41, thereby greatly improving production efficiency; and the precision glue filling machine equipment 1 is also provided with a glue head detection mechanism 70, which can automatically and quickly detect whether the height and horizontal position of each glue dispensing head 41 are offset, and then manually fine-tune it through human intervention, and correct the eccentricity in time to ensure that there is no deviation in the position of each glue dispensing head 41, which can avoid the product lamp tube from sticking, improve the product yield, and ensure the product quality.

[0037] See also Figure 2 In this embodiment, the glue head detection mechanism 70 includes a plurality of centering detection components 72 arranged side by side, and the number of the centering detection components 72 and the spacing between them are consistent with the glue dispensing heads 41 of the multi-head glue dispensing mechanism 40. Therefore, by setting a plurality of centering detection components 72, the horizontal position detection of all the glue dispensing heads 41 can be realized at one time.

[0038] Specifically, the centering detection component 72 also includes a detection window 721. The left and right position sensors 722 and the front and rear position sensors 723 are both optical fiber sensors and are arranged in the detection window 721 so that the needle tube 411 of the dispensing head 41 can be inserted into the detection window 721 for detection.

[0039] like Figure 1 The control mechanism 80 includes a control module (not shown), a display module 81 and an input module 82; the control module may be a PLC, etc., which is electrically connected to the display module 81, the input module 82, the feeding mechanism 20, the visual positioning mechanism 30, the multi-head glue discharging mechanism 40, the three-axis driving mechanism 50, the glue erasing mechanism 60 and the glue head detection mechanism 70, respectively. The display module 81 may be a display screen for displaying information, and the input module 82 may be a keyboard for inputting information. The control module is used to identify the workpiece 2 on the feeding mechanism 20 through the visual positioning mechanism 30, set the operating program, and control the feeding mechanism 20, the multi-head glue discharging mechanism 30, the three-axis driving mechanism 40, the glue erasing mechanism 50 and the glue head detection mechanism 60 to perform actions according to the operating program.

[0040] This embodiment also provides a production process using the precision glue filling machine 1, including the following steps: S1: workpiece feeding; the workpiece 2 is fed into the glue filling station 21 of the feeding mechanism 20, and the workpiece 2 is limited and fixed by the limiting mechanism 22.

[0041] S2: Detect the position of the workpiece; the three-axis driving mechanism 50 drives the visual positioning mechanism 30 to move to the vicinity of the MARK point of the workpiece 2 to take pictures, so as to identify and locate the position of the workpiece 2 and obtain an initial glue injection position on one side of the workpiece 2.

[0042] S3: The multi-head glue dispensing mechanism wipes and cleans the glue; the three-axis driving mechanism 50 drives each glue dispensing head 41 of the multi-head glue dispensing mechanism 40 to move to the glue wiping mechanism 60 for glue wiping and cleaning.

[0043] S4: the multi-head glue dispensing mechanism starts to pour glue; the workpiece 2 is divided into a plurality of side-by-side areas by the number of glue dispensing heads 41 on the multi-head glue dispensing mechanism 40 and the spacing between adjacent glue dispensing heads 41, and then the first glue dispensing head 41 on the same side as the initial glue pouring position is driven by the three-axis driving mechanism 50 to start pouring glue from the initial glue pouring position, while the remaining side-by-side glue dispensing heads 41 follow synchronously to pour glue, thereby enabling each glue dispensing head 41 of the multi-head glue dispensing mechanism 40 to synchronously perform independent glue pouring operations on its corresponding area.

[0044] S5: workpiece discharging; after the glue filling is completed, the workpiece 2 is discharged from the feeding mechanism 20, and the glue filling operation of one workpiece 2 is completed.

[0045] S6: Repeat steps S1-S5 for a predetermined number of times to achieve automatic glue filling for a predetermined number of workpieces 2, and then proceed to step S7; the predetermined number can be set manually.

[0046] S7: Glue dispensing head detection and correction; the three-axis driving mechanism 50 drives each glue dispensing head 41 of the multi-head glue dispensing mechanism 40 to the glue head detection mechanism 70 to detect the height and horizontal position of the height sensor 71 and the centering detection component 72. If the height of the needle tube 411 of the glue dispensing head 41 is inconsistent and / or the horizontal position of the needle tube 411 is offset, manual intervention is performed to perform abnormal correction and adjustment on the glue dispensing head 41. After the correction is completed, return to step S1 to continue the glue filling production.

[0047] Furthermore, the step S7 of dispensing head detection and calibration may include the following specific steps: S71, detection and calibration starts; S72, perform height detection of the dispensing head needle tube; the three-axis driving mechanism 50 drives one of the dispensing heads 41 of the multi-head dispensing mechanism 40 to move above the height sensor 71; then drives the dispensing head 41 to descend to a predetermined height, and contacts the detection end 711 of the height sensor 71 during the descent, obtains the height of the current dispensing head 41 needle tube 411, calculates the difference between the detected dispensing head height and the preset dispensing head height and records it as the height deviation amount, if the height deviation amount is within the height setting range, then enters step S73, otherwise, adjusts the height to within the height setting range through manual fine-tuning, and then enters step S73; S73, repeat step S72 until the height of each glue dispensing head 41 of the multi-head glue dispensing mechanism 40 is detected and calibrated, and then enter step S74; S74, performing horizontal position detection of the needle tube of the dispensing head; S741, detection of the left and right position of the dispensing head needle; the three-axis driving mechanism 50 drives the dispensing head 41 of the multi-head dispensing mechanism 40 to move and extend into the detection area of ​​the left and right position sensor 722 in the detection window 721 of the centering detection component 72, and obtains the current left and right offset B of the dispensing head. In this embodiment, the dispensing head can be moved back and forth within the detection window 721 so that the dispensing head passes through the detection range of the left and right position sensor 722. The left and right offset B of the dispensing head is the horizontal left and right spacing between the dispensing head and the left and right position sensors during detection. If the left and right offset B of the dispensing head is not within the left and right setting range, the dispensing head 41 needle 411 is adjusted to the left and right setting range through manual fine-tuning. Otherwise, the dispensing head 41 needle 411 is not corrected left and right; S742, front and rear position detection of the dispensing head needle; the three-axis driving mechanism 50 drives the dispensing head 41 of the multi-head dispensing mechanism 40 to move and extend into the detection area of ​​the front and rear position sensor 723 in the detection window 721 of the centering detection component 72 to obtain the current front and rear offset A of the dispensing head. In this embodiment, the dispensing head can be moved left and right within the detection window 721 so that the dispensing head passes through the detection range of the left and right position sensor 722. The front and rear offset A of the dispensing head is the horizontal front and rear spacing between the dispensing head and the front and rear position sensor during detection. If the front and rear offset A of the dispensing head is not within the front and rear set range, the dispensing head 41 needle 411 is adjusted to the front and rear set range through manual fine-tuning. Otherwise, the dispensing head 41 needle 411 is not corrected front and rear; The execution order of the above steps S741 and S742 is not limited; S75, detection and calibration are completed.

[0048] Some process steps of the above process can be set as corresponding operating programs and then executed through the control module. Of course, the specific process execution method is not limited to this.

[0049] Therefore, the production process provided by this embodiment can regularly detect the dispensing head 41 and then manually calibrate it. The above method can quickly achieve the height and centering of the needle tube 411 of the five-head dispensing head 41, saving a lot of machine adjustment time, simplifying the difficulty of machine adjustment, reducing the adjustment ability of technicians, realizing standardized debugging of the dispensing head 41 operation, and ensuring the consistency of production quality.

[0050] In summary, the above equipment and process have at least the following advantages: 1. Solved the technical problems of difficulty in adjusting the machine and lack of benchmark for production technicians; 2. The method of quickly debugging the dispensing head 41 saves a lot of operation and adjustment time, and the consistency of the product after debugging is improved, which comprehensively improves the product competitiveness; 3. The precision glue filling machine 1 has a compact structure, which saves equipment space and frees up more equipment space for other equipment; 4. It significantly improved the glue pollution incidents and reduced the trimming work and missed inspections.

[0051] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, equivalent changes and modifications without departing from the principle of the present invention should still belong to the protection scope of the present invention.

[0052] In the description of the embodiments of the present application, it should be understood that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use, or is the orientation or position relationship commonly understood by technical personnel in this field. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0053] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numerals and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0054] In addition, the present application provides examples of various specific processes and materials, but a person skilled in the art may be aware of the application of other processes and / or the use of other materials.

Claims

1. A precision glue filling machine, characterized by: It includes a frame, a feeding mechanism, a visual positioning mechanism, a multi-head glue discharging mechanism, a three-axis driving mechanism, a glue wiping mechanism and a glue head detection mechanism; The feeding mechanism is installed on the frame, and a glue pouring station is provided in the feeding mechanism, and a limiting mechanism for limiting and fixing the workpiece is provided at the glue pouring station; The three-axis driving mechanism is located above the feeding mechanism, and the visual positioning mechanism and the multi-head glue discharging mechanism are installed on the three-axis driving mechanism to drive the visual positioning mechanism and the multi-head glue discharging mechanism to perform three-axis movement; The multi-head glue dispensing mechanism includes a plurality of glue dispensing heads arranged side by side and capable of independently performing three-axis fine adjustment; The glue erasing mechanism and the glue head detection mechanism are located on one side of the feeding mechanism; The glue erasing mechanism is used to clean the glue dispensing heads; The glue head detection mechanism includes a height sensor and a centering detection component; The height sensor includes a detection end that can be extended and retracted up and down, and is used to detect the height of each dispensing head; the centering detection component includes a left and right position sensor and a front and back position sensor, which are used to detect the horizontal position of the dispensing head.

2. According to claim 1, the precision glue filling machine is characterized in that: The glue head detection mechanism comprises a plurality of centering detection components arranged side by side, and the number of the centering detection components and the spacing between them are consistent with those of the glue dispensing heads of the multi-head glue dispensing mechanism.

3. According to claim 1, the precision glue filling machine is characterized in that: The centering detection component also includes a detection window, and the left and right position sensors and the front and rear position sensors are both optical fiber sensors and are arranged in the detection window.

4. The precision glue dispensing machine according to claim 1, characterized in that: The multi-head glue dispensing mechanism also includes a glue head mounting seat and multiple glue head adjustment platforms; the number of the glue head adjustment platforms corresponds to the number of the glue dispensing heads, and the glue dispensing heads are installed on the glue head mounting seat through the glue head adjustment platforms to drive the glue dispensing heads to perform three-axis fine-tuning; the glue head mounting seat is installed and connected to the three-axis driving mechanism.

5. The precision glue dispensing machine according to claim 1, characterized in that: The two transverse ends of the feeding mechanism are respectively a feeding end and a discharging end; the feeding mechanism comprises two conveyor belts arranged at intervals in the longitudinal direction, and the workpiece is set between the two conveyor belts and driven to move transversely.

6. A precision glue filling machine according to claim 5, characterized in that: The limiting mechanism is arranged at the glue pouring station between the two conveyor belts, and the limiting mechanism includes a transverse blocking assembly, and the transverse blocking assembly includes a transverse block and a vertical motor, and the vertical motor drives the transverse block to move up and down; the limiting mechanism also includes a longitudinal clamping assembly, and the longitudinal clamping assembly includes a longitudinal block, a longitudinal clamping block and a longitudinal cylinder, and the longitudinal block and the longitudinal clamping block are respectively arranged on the longitudinal outer sides of the two conveyor belts, and the longitudinal cylinder drives the longitudinal clamping block to move longitudinally.

7. The precision glue dispensing machine according to claim 5, characterized in that: The feeding mechanism is installed on the frame table, and one of the conveyor belts is installed on the longitudinal guide rail arranged on the table so as to be able to move longitudinally and position.

8. The precision glue dispensing machine according to claim 1, characterized in that: It also includes a control mechanism, which includes a control module, a display module and an input module; the control module is electrically connected to the display module, the input module, the feeding mechanism, the visual positioning mechanism, the multi-head glue discharging mechanism, the three-axis driving mechanism, the glue erasing mechanism and the glue head detection mechanism, respectively, the display module is used to display information, the input module is used to input information, the control module is used to identify the workpiece on the feeding mechanism through the visual positioning mechanism, and set the operating program, and control the feeding mechanism, the multi-head glue discharging mechanism, the three-axis driving mechanism, the glue erasing mechanism and the glue head detection mechanism to perform actions according to the operating program.

9. A production process using the precision glue filling machine equipment according to any one of claims 1 to 8, characterized in that: The steps include: S1: Workpiece feeding: feeding the workpiece to the glue filling station of the feeding mechanism, and fixing the workpiece by the limiting mechanism; S2: Detect the workpiece position; the three-axis drive mechanism drives the visual positioning mechanism to move to the vicinity of the workpiece MARK point to take pictures, so as to identify and locate the workpiece position and obtain an initial glue filling position on one side of the workpiece; S3: The multi-head glue dispensing mechanism wipes and cleans the glue; the three-axis driving mechanism drives each glue dispensing head of the multi-head glue dispensing mechanism to move to the glue wiping mechanism for glue wiping and cleaning; S4: The multi-head glue dispensing mechanism starts to dispense glue; the workpiece is divided into a plurality of side-by-side areas according to the number of glue dispensing heads on the multi-head glue dispensing mechanism and the spacing between adjacent glue dispensing heads, and then the first glue dispensing head on the same side as the initial glue dispensing position is driven by the three-axis driving mechanism to dispense glue from the initial glue dispensing position, while the remaining side-by-side glue dispensing heads synchronously follow to dispense glue, thereby making each glue dispensing head of the multi-head glue dispensing mechanism synchronously perform independent glue dispensing operations on the corresponding areas; S5: Workpiece discharging: After the glue filling is completed, the workpiece is discharged from the feeding mechanism to complete the glue filling operation of one workpiece; S6: Repeat steps S1-S5 for a predetermined number of times to achieve automatic glue filling for a predetermined number of workpieces, and then proceed to step S7; S7: Glue dispensing head detection and correction; the three-axis drive mechanism drives each glue dispensing head of the multi-head glue dispensing mechanism to the glue head detection mechanism's height sensor and centering detection component for height and horizontal position detection. If the height of the glue dispensing head needle tube is inconsistent and / or the horizontal position of the needle tube is offset, manual intervention is performed to perform abnormal correction and adjustment on the glue dispensing head; after the correction is completed, return to step S1 to continue the glue filling production.

10. The production process of the precision glue filling machine according to claim 8, characterized in that: The step S7 of dispensing head detection and calibration includes the following specific steps: S71, detection and calibration begins; S72, perform height detection of the dispensing head needle; the three-axis driving mechanism drives one of the dispensing heads of the multi-head dispensing mechanism to move above the height sensor; the three-axis driving mechanism drives the dispensing head to descend to a predetermined height, and contacts and presses down the detection end of the height sensor during the descent process, obtains the current height of the dispensing head needle, calculates the difference between the detected dispensing head height and the preset dispensing head height and records it as the height deviation, if the height deviation is within the height setting range, then enters step S73, otherwise, adjusts the dispensing head height to within the height setting range through manual fine-tuning, and then enters step S73; S73, repeat step S72 until the height of each glue dispensing head of the multi-head glue dispensing mechanism is detected and calibrated, and then enter step S74; S74, performing horizontal position detection of the needle tube of the dispensing head; S741, detection of the left and right position of the dispensing head needle; the three-axis drive mechanism drives the dispensing head of the multi-head dispensing mechanism to move and extend into the detection area of ​​the left and right position sensor of the centering detection component to obtain the current left and right offset of the dispensing head. The left and right offset of the dispensing head is the horizontal left and right spacing between the dispensing head and the left and right position sensor during detection. If the left and right offset of the dispensing head is not within the left and right setting range, the dispensing head needle is adjusted to the left and right setting range through manual fine-tuning. Otherwise, the dispensing head needle is not corrected left and right; S742, front and rear position detection of the dispensing head needle; the three-axis drive mechanism drives the dispensing head of the multi-head dispensing mechanism to move and extend into the detection area of ​​the front and rear position sensor of the centering detection component to obtain the current front and rear offset of the dispensing head. The front and rear offset of the dispensing head is the horizontal front and rear spacing between the dispensing head and the front and rear position sensor during detection. If the front and rear offset of the dispensing head is not within the front and rear setting range, the dispensing head needle is adjusted to the front and rear setting range through manual fine-tuning. Otherwise, the dispensing head needle is not corrected front and rear; The execution order of the above steps S741 and S742 is not limited; S75, detection and calibration are completed.

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