Double-sided dispensing equipment and dispensing method thereof

Abstract

This application relates to a double-sided dispensing device and method. The double-sided dispensing device includes a feeding conveyor belt, a first feeding robot, a second feeding robot, a first dispensing platform, a first dispensing device, a UV adhesive curing platform, a second dispensing platform, and a second dispensing device. This application utilizes the first and second feeding robots for product feeding and transfer, the first and second dispensing platforms for adsorbing and fixing products, and for moving products. The first and second dispensing devices dispense adhesive onto both sides of the product. After the first dispensing, the product is immediately moved to the UV adhesive curing platform for UV curing, after which the dispensing operation on the other side can proceed normally. No offline baking or curing is required after the first dispensing, eliminating the need for any manual operation and reducing transfer time. After the second dispensing, the product is transferred to the baking process, thus improving overall dispensing efficiency and reducing the labor intensity of workers.

Description

Technical Field

[0001] This application relates to the field of automatic dispensing technology, and in particular to a double-sided dispensing device and a dispensing method thereof. Background Technology

[0002] Current automatic dispensing machines can perform dispensing operations on various complex shapes and paths. When combined with a loading robot, they can achieve fully automatic dispensing. However, some products require double-sided dispensing. In existing technology, one side is usually dispensed and then baked offline for curing (if it is not cured, it cannot be flipped and laid flat, which will affect the shape of the glue). Then the other side is dispensed and baked for curing again. Since the first dispensing needs to be done offline, the manual handling is labor-intensive and the transfer efficiency is low, which needs to be improved. Summary of the Invention

[0003] To address the technical problem in existing double-sided dispensing processes that require offline baking after the first dispensing, which affects dispensing efficiency, this invention provides a double-sided dispensing device and its dispensing method.

[0004] The technical solution provided in this application is as follows: A double-sided dispensing device includes a feeding conveyor belt, a first feeding robot, a second feeding robot, a first dispensing platform, a first dispensing device, a UV adhesive curing platform, a second dispensing platform, and a second dispensing device; the feeding conveyor belt is used to convey products to the area below the first feeding robot; the first feeding robot is used to remove products from the feeding conveyor belt and transfer them to the first dispensing platform; the first dispensing platform includes a first product adsorption plate, a flipping table, and a first horizontal moving table, the first product adsorption plate is disposed on the flipping table, the flipping table is disposed on the first horizontal moving table, the first horizontal moving table is used to drive the flipping table to move horizontally, when moving to the inner end, it is used to receive products conveyed by the first feeding robot, and when moving to the outer end, it is used for dispensing adhesive; the flipping table is used to drive the first product adsorption plate to rotate 180 degrees, and rotates back after the first dispensing device finishes dispensing adhesive, the first product adsorption plate is used to... The first product adsorption plate is used to fix the product and expose the back adhesive application area; the first adhesive application device is used to apply UV adhesive to the flipped product; the UV adhesive curing platform is used to cure the UV adhesive on the product by irradiation; the second loading robot is used to transfer the flipped product from the first product adsorption plate to the UV adhesive curing platform so that it can be cured by UV lamps on the UV adhesive curing platform; the second loading robot is also used to transfer the product on the UV adhesive curing platform to the second adhesive application platform; the second adhesive application platform includes a second product adsorption plate and a second horizontal moving stage, the second product adsorption plate is set on the second horizontal moving stage, the second horizontal moving stage is used to drive the second product adsorption plate to move horizontally, when it moves to the inner end, it is used to receive the product transferred by the second loading robot, when it moves to the outer end, it is used for adhesive application; the second product adsorption plate is used to adsorb and fix the product; the second adhesive application device is used to apply adhesive to the product on the second product adsorption plate.

[0005] By adopting the above technical solution, this application utilizes a first and a second loading robot for product loading and transfer, a first and a second dispensing platform for adsorbing and fixing products, and for moving products. The first and second dispensing devices are used to dispense adhesive onto both sides of the product. After the first dispensing, the product is immediately moved to a UV adhesive curing platform for UV curing. Then it can be placed on a second product adsorption plate for normal dispensing on the other side. Since offline baking and curing are not required after the first dispensing, no manual operation is needed, reducing transfer time. After the second dispensing, the product is transferred to the baking process, thus improving overall dispensing efficiency and reducing the labor intensity of workers.

[0006] Preferably, the double-sided dispensing equipment further includes an AOI optical inspection device, an AOI optical inspection table, a third horizontal moving table, and an NG product temporary storage conveyor belt. The AOI optical inspection device is used to perform appearance optical inspection on the products after dispensing by the second dispensing device to determine whether the products are qualified. The AOI optical inspection table is set on the third horizontal moving table. The third horizontal moving table is used to drive the AOI optical inspection table to move horizontally. When it moves to the inner end, it is used to receive the products after dispensing by the second dispensing device from the second loading robot. When it moves to the outer end, it is used for optical inspection. The second loading robot is also used to transfer qualified products to the next process or the connection position of the next process, and to transfer unqualified products to the NG product temporary storage conveyor belt.

[0007] By adopting the above technical solution, this application utilizes an AOI optical inspection device to automatically inspect the appearance of products. It can not only automatically detect defective products, but also remove defective products when they are found, without stopping the machine or requiring personnel to wait on site at all times.

[0008] Preferably, the second dispensing device includes a rotary motor, a rotary motor mounting plate, a tilting motor, a tilting motor mounting plate, a locking clamp, and a needle assembly. The rotary motor is vertically mounted on the rotary motor mounting plate and is a hollow motor, including an outer stator and a hollow rotor. The locking clamp is located at the lower end of the hollow rotor. The tilting motor mounting plate is located on the locking clamp. The tilting motor is horizontally mounted on the tilting motor mounting plate. The needle assembly is located on the motor shaft of the tilting motor. The cable of the tilting motor and the dispensing tube of the needle assembly pass upward from inside the hollow rotor.

[0009] By adopting the above technical solution, the second dispensing device is equipped with a rotary motor and a tilting motor. The rotary motor can drive the needle assembly to rotate in the horizontal plane, and the tilting motor can drive the needle assembly to rotate in the vertical plane. Through the above combined motion, the orientation and tilt angle of the needle assembly can be adjusted in real time to adapt to the requirements of various dispensing trajectories, especially to the dispensing needs of narrow slits of different widths and depths, as well as multi-sided narrow slits. When it is necessary to clean the needle assembly, the needle assembly is rotated downwards, and cleaning of the needle can be achieved in the same way as existing technologies, which is less likely to cause poor cleaning and thus ensures dispensing quality. The cable of the tilting motor and the glue tube of the needle assembly are both run upwards from the hollow rotor of the rotary motor, using an internal wiring method. When the needle assembly performs rotation and tilting actions, the glue tube and cable will not entangle or become taut with the rotary motor, and the wear of the glue tube and cable during movement can also be reduced.

[0010] Preferably, the tilting motor mounting plate is offsetly disposed on the locking clamp to expose the through hole inside the hollow rotor; the tilting motor is offsetly disposed on the tilting motor mounting plate, and a notch is provided at the lower end of one side of the tilting motor mounting plate, through which the cable of the tilting motor passes into the hollow rotor.

[0011] By adopting the above technical solution, the tilt motor mounting plate is offset, exposing the through holes inside the hollow rotor, which serves to avoid hoses and cables, allowing them to smoothly pass through the through holes of the hollow rotor. A notch is provided at the lower end of one side of the tilt motor mounting plate, through which the tilt motor cable passes before entering the hollow rotor, shortening the wiring path and reducing cable looseness. In addition, the tilt motor is still located in the center of the lower part of the tilt motor mounting plate, so the tilt motor appears to be offset on the tilt motor mounting plate.

[0012] Preferably, the second dispensing device further includes a lifting assembly, which includes a first mounting plate, a lifting plate, and a lifting drive mechanism. The lifting plate is slidably mounted on the first mounting plate via a guide rail slider assembly. The lifting drive mechanism is used to drive the lifting plate to move up and down. The rotary motor mounting plate is mounted on the lifting plate. The side of the rotary motor mounting plate is also provided with a reinforcing plate to strengthen the connection between the rotary motor mounting plate and the lifting plate.

[0013] By adopting the above technical solutions, the lifting assembly can indirectly drive the needle assembly to lift, enabling more complex dispensing paths, such as meeting the dispensing needs of narrow slits of different widths and depths; the reinforcing plate can strengthen the connection between the rotary motor mounting plate and the lifting plate, improve the connection rigidity of the rotary motor mounting plate, and maintain minimal deformation even when bearing the rotary motor and tilting motor.

[0014] Preferably, the lifting plate is further provided with a first angle sensor for detecting the rotation angle of the hollow rotor; the tilting motor mounting plate is further provided with a second angle sensor for detecting the tilt angle of the needle assembly, and the cable of the second angle sensor also passes upward from inside the hollow rotor.

[0015] By adopting the above technical solution and setting a first angle sensor and a second angle sensor, the orientation and tilt angle of the needle assembly can be detected in real time, ensuring the movement accuracy of the needle assembly and improving the dispensing quality.

[0016] Preferably, the second dispensing device further includes a dispensing assembly, which is disposed on the lifting plate and connected to the needle assembly through the dispensing tube; the dispensing assembly includes multiple dispensing bottles and multiple manual ball valves, each of the multiple dispensing bottles being connected to the needle assembly through multiple dispensing tubes, and the multiple manual ball valves being disposed on the multiple dispensing tubes respectively.

[0017] By adopting the above technical solution, the glue supply assembly is used to supply glue to the needle assembly. The glue supply assembly is set on the lifting plate and does not rotate with the rotary motor and tilting motor, which can ensure the stability of glue supply. Multiple glue bottles are connected to the needle assembly through multiple glue tubes, and each can supply glue to the needle assembly individually. Normally, only one glue bottle supplies glue to the needle assembly. When the glue in the glue bottle is exhausted, the corresponding manual ball valve is closed and another manual ball valve is opened to supply glue from another glue bottle. When the glue in all glue bottles is exhausted, all glue bottles are removed and replaced with new glue bottles. This effectively increases the glue capacity of the dispensing device many times over and reduces the frequency of downtime to replace glue bottles.

[0018] Preferably, the tilting motor mounting plate is also provided with protective covers on both sides. When the tilting motor drives the needle assembly to rotate, it does not exceed the protection range of the protective cover. The protective cover is a hollow frame structure, and the cable of the tilting motor passes through one of the protective covers. The first mounting plate is also provided with a junction box, and the lifting plate is provided with a wire shield. The top of the wire shield is provided with a clearance hole. The junction box is provided with a U-shaped cable routing tube. One end of the U-shaped cable routing tube is fixed to the junction box, and the other end can move up and down in the clearance hole. The cables of the rotary motor, the tilting motor, the first angle sensor, and the second angle sensor all run through the U-shaped cable routing tube and are electrically connected to the junction box.

[0019] By adopting the above technical solution, the protective cover can protect the needle assembly, preventing the needle from directly contacting or colliding with external objects. The protective cover is designed as a hollow frame structure, which can also be used as a fixing frame for the cable routing of the tilting motor, limiting the cable's sway range and reducing its looseness. The cable shield is used to cover the routing of various cables and tubing to avoid affecting the appearance of the dispensing device. The cables of the rotary motor and tilting motor, as well as the cables of the first and second angle sensors, are all routed through the U-shaped cable tube. This limits the cable sway range and reduces its looseness even over long distances, and also improves the appearance of the dispensing device. An clearance hole is provided at the top of the cable shield, allowing the U-shaped cable tube to move up and down within it, thus preventing the U-shaped cable tube from affecting the raising and lowering of the cable shield.

[0020] On the other hand, this application also provides another technical solution: a dispensing method for the double-sided dispensing equipment described above, comprising the following steps:

[0021] S1, Place the product to be glued onto the feeding conveyor belt, and the feeding conveyor belt will transport the product to the area below the first feeding robot arm;

[0022] S2, the first horizontal moving stage moves the flipping table and the first product adsorption plate to the inner end;

[0023] S3, the first loading robot takes the product from the loading conveyor belt and transfers it to the first product adsorption plate of the first dispensing platform;

[0024] S4, after the first product adsorption plate adsorbs the product, the first horizontal moving stage moves the flipping stage and the first product adsorption plate to the outer end, and the flipping stage flips the first product adsorption plate and the product 180 degrees to expose the glue dosing position on the back of the product.

[0025] S5, the first dispensing device applies adhesive to the back of the flipped product;

[0026] S6, after dispensing glue, the flipping table flips the first product adsorption plate and the product back, and the first horizontal moving table moves the flipping table and the first product adsorption plate to the inner end.

[0027] S7, the second loading robot takes the product from the first product adsorption plate and transfers it to the UV adhesive curing platform. The UV lamp on the UV adhesive curing platform irradiates and cures the UV adhesive on the product.

[0028] S8, the second horizontal moving stage moves the second product adsorption plate to the inner end, and the second feeding robot takes the product from the UV adhesive curing platform and transfers it to the second product adsorption plate.

[0029] S9, after the second product adsorption plate adsorbs the product, the second horizontal moving stage moves the second product adsorption plate to the outer end.

[0030] S10, The second dispensing device dispenses adhesive onto the product on the second product adsorption plate.

[0031] S11, After dispensing the adhesive, the second horizontal moving stage moves the second product adsorption plate to the inner end;

[0032] S12, the second loading robot takes the product from the second product adsorption plate and transfers it to the next process or the connection position of the next process.

[0033] Preferably, step S12 further includes the following sub-step: S121, the third horizontal moving stage drives the AOI optical inspection stage to the inner end;

[0034] S122, the second loading robot takes the product from the second product adsorption plate and transfers it to the AOI optical inspection stage;

[0035] S123, the third horizontal moving stage drives the AOI optical inspection stage to the outer end, and the AOI optical inspection device performs optical inspection on the product to determine whether the product is qualified.

[0036] S124, the third horizontal moving stage drives the AOI optical inspection stage to the inner end;

[0037] S125, the second loading robot will remove the qualified products from the AOI optical inspection table and transfer them to the next process or the connection position of the next process, and remove the unqualified products from the AOI optical inspection table and transfer them to the NG product temporary storage conveyor belt.

[0038] In summary, this application includes at least one of the following beneficial technical effects: 1. This application uses a UV adhesive curing platform to irradiate and cure the UV adhesive on the product. After the first dispensing, offline baking and curing are not required, and no manual operation is required, which reduces the transfer time. After the second dispensing, it is transferred to the baking process, which improves the overall dispensing efficiency and reduces the labor intensity of workers.

[0039] 2. This application utilizes an AOI optical inspection device to automatically inspect the appearance of products. It can not only automatically detect defective products, but also remove defective products without stopping the machine.

[0040] 3. The second dispensing device can adjust the orientation and tilt angle of the needle assembly in real time to adapt to the requirements of various dispensing trajectories, especially to the dispensing needs of narrow slits of different widths and depths, as well as multi-sided narrow slits. Attached Figure Description

[0041] Figure 1 A top view of the double-sided dispensing apparatus described in an embodiment of this application is illustrated;

[0042] Figure 2 A perspective view of the double-sided dispensing device described in an embodiment of this application is illustrated;

[0043] Figure 3 It is illustrated Figure 2 Enlarged view of point A in the middle;

[0044] Figure 4 It is illustrated Figure 2 Enlarged view at point B in the middle;

[0045] Figure 5 A perspective view of the second dispensing device according to an embodiment of this application is shown;

[0046] Figure 6 A perspective view of the second dispensing device according to an embodiment of this application is shown from another angle;

[0047] Figure 7 A schematic diagram illustrating the cooperative relationship between the rotary motor, tilting motor, and needle assembly described in the embodiments of this application is shown.

[0048] Figure 8 A schematic diagram illustrating the engagement relationship of the rotary motor, tilting motor, and needle assembly described in an embodiment of this application at another angle is shown;

[0049] Figure 9 A bottom view of the rotary motor, tilting motor, and needle assembly described in an embodiment of this application is illustrated.

[0050] Figure 10 A schematic diagram illustrating the state in which the tilting motor mounting plate described in the embodiments of this application is offsetly disposed on the locking clamp;

[0051] Figure 11 A schematic diagram illustrating the state in which the tilting motor described in the embodiments of this application is offsetly mounted on the tilting motor mounting plate;

[0052] Figure 12 A perspective view of the adhesive supply assembly described in an embodiment of this application is shown.

[0053] Explanation of reference numerals in the attached drawings: 1. Feeding conveyor belt; 2. First feeding robot; 3. Second feeding robot; 4. First dispensing platform; 41. First product adsorption plate; 42. Tilting table; 43. First horizontal moving table; 5. First dispensing device; 6. UV adhesive curing platform; 7. Second dispensing platform; 71. Second product adsorption plate; 72. Second horizontal moving table; 8. Second dispensing device; 80. Rotary motor; 801. Outer stator; 802. Hollow rotor; 82. Rotary motor mounting plate; 83. Tilting motor; 84. Tilting motor mounting plate; 841. Notch; 85. Locking clamp; 86. Needle. Components; 87. Lifting assembly; 871. First mounting plate; 872. Lifting plate; 873. Lifting drive mechanism; 874. Guide rail slider assembly; 875. Reinforcing plate; 88. First angle sensor; 89. Second angle sensor; 810. Adhesive supply assembly; 8101. Adhesive bottle; 8102. Manual ball valve; 811. Protective cover; 812. Junction box; 813. Wire shield; 8131. Clearance hole; 814. U-shaped cable conduit; 9. AOI optical inspection device; 10. AOI optical inspection table; 11. Third horizontal moving table; 12. NG product temporary storage conveyor belt; 100. Adhesive hose. Detailed Implementation

[0054] The following is in conjunction with the appendix Figure 1-12 This application will be described in further detail.

[0055] Reference Figure 1 and Figure 2This application discloses a double-sided dispensing device, including a feeding conveyor belt 1, a first feeding robot 2, a second feeding robot 3, a first dispensing platform 4, a first dispensing device 5, a UV adhesive curing platform 6, a second dispensing platform 7, and a second dispensing device 8. The feeding conveyor belt 1 is used to convey products to the area below the first feeding robot 2. The first feeding robot 2 is used to remove products from the feeding conveyor belt 1 and transfer them to the first dispensing platform 4. The first dispensing platform 4 includes a first product adsorption plate 41, a flipping table 42, and a first horizontal moving table 43. The first product adsorption plate 41 is disposed on the flipping table 42, and the flipping table 42 is disposed on the first horizontal moving table 43. The first horizontal moving table 43 is used to drive the flipping table 42 to move horizontally. When it moves to the inner end, it is used to receive products conveyed by the first feeding robot 2. When it moves to the outer end, it is used for dispensing adhesive. The flipping table 42 is used to drive the first product adsorption plate to rotate 180 degrees and flip back after the first dispensing device 5 has finished dispensing adhesive. Product 41 is used to adsorb and fix the product, exposing the back adhesive application area; the first adhesive application device 5 is used to apply UV adhesive to the flipped product; the UV adhesive curing platform 6 is used to cure the UV adhesive on the product by irradiation; the second loading robot 3 is used to transfer the flipped product from the first product adsorption plate 41 to the UV adhesive curing platform 6 so that it can be cured by UV lamps on the UV adhesive curing platform 6; the second loading robot 3 is also used to transfer the product on the UV adhesive curing platform 6 to the second adhesive application platform 7; the second adhesive application platform 7 includes a second product adsorption plate 71 and a second horizontal moving stage 72. The second product adsorption plate 71 is disposed on the second horizontal moving stage 72. The second horizontal moving stage 72 is used to drive the second product adsorption plate 71 to move horizontally. When it moves to the inner end, it is used to receive the product transferred by the second loading robot 3. When it moves to the outer end, it is used for adhesive application; the second product adsorption plate 71 is used to adsorb and fix the product; the second adhesive application device 8 is used to apply adhesive to the product on the second product adsorption plate 71.

[0056] Reference Figure 3 Both the first dispensing device 5 and the second dispensing device 8 are equipped with CCD industrial cameras to identify the actual position of the product and perform position compensation during dispensing to ensure high dispensing accuracy.

[0057] The dispensing method of the double-sided dispensing equipment described in this application includes the following steps:

[0058] S1, place the product to be glued on the feeding conveyor belt 1, and the feeding conveyor belt 1 will transport the product to the bottom of the first feeding robot 2;

[0059] S2, the first horizontal moving stage 43 moves the flipping stage 42 and the first product adsorption plate 41 to the inner end;

[0060] S3, the first feeding robot 2 takes the product from the feeding conveyor belt 1 and transfers it to the first product adsorption plate 41 of the first dispensing platform 4;

[0061] S4, after the first product adsorption plate 41 adsorbs the product, the first horizontal moving stage 43 moves the flipping stage 42 and the first product adsorption plate 41 to the outer end, and the flipping stage 42 flips the first product adsorption plate 41 and the product 180 degrees to expose the glue dosing position on the back of the product.

[0062] S5, the first dispensing device 5 applies adhesive to the back of the flipped product;

[0063] S6, after dispensing glue, the flipping table 42 flips the first product adsorption plate 41 and the product back, and the first horizontal moving table 43 moves the flipping table 42 and the first product adsorption plate 41 to the inner end.

[0064] S7, the second loading robot 3 takes the product from the first product adsorption plate 41 and transfers it to the UV adhesive curing platform 6. The UV lamp on the UV adhesive curing platform 6 irradiates and cures the UV adhesive on the product.

[0065] S8, the second horizontal moving stage 72 moves the second product adsorption plate 71 to the inner end, and the second feeding robot 3 takes the product from the UV glue curing platform 6 and transfers it to the second product adsorption plate 71.

[0066] S9, after the second product adsorption plate 71 adsorbs the product, the second horizontal moving stage 72 moves the second product adsorption plate 71 to the outer end.

[0067] S10, the second dispensing device 8 dispenses adhesive onto the product on the second product adsorption plate 71.

[0068] S11, After dispensing the adhesive, the second horizontal moving stage 72 moves the second product adsorption plate 71 to the inner end.

[0069] S12, the second loading robot 3 takes the product from the second product adsorption plate 71 and transfers it to the next process or the connection position of the next process.

[0070] This application utilizes a first loading robot 2 and a second loading robot 3 for product loading and transfer, a first dispensing platform 4 and a second dispensing platform 7 for adsorbing and fixing products, and a first dispensing device 5 and a second dispensing device 8 for dispensing adhesive on both sides of the product. After the first dispensing, the product is immediately moved to a UV adhesive curing platform 6 for UV curing. Then it can be placed on a second product adsorption plate 71 for normal dispensing on the other side. Since offline baking and curing are not required after the first dispensing, no manual operation is needed, reducing transfer time. After the second dispensing, the product is transferred to the baking process, which improves the overall dispensing efficiency and reduces the labor intensity of workers.

[0071] After the second dispensing is completed, because the second dispensing device 8 cannot guarantee a 100% pass rate, in order to prevent defective products from flowing into the next process, or to avoid the technical problem of unqualified products being difficult to rework after baking, this application has made further improvements.

[0072] Reference Figure 2 and Figure 4 The double-sided dispensing equipment also includes an AOI optical inspection device 9, an AOI optical inspection stage 10, a third horizontal moving stage 11, and an NG product temporary storage conveyor belt 12. The AOI optical inspection device 9 is used to perform appearance optical inspection on the products after dispensing by the second dispensing device 8 to determine whether the products are qualified. The AOI optical inspection stage 10 is set on the third horizontal moving stage 11. The third horizontal moving stage 11 is used to drive the AOI optical inspection stage 10 to move horizontally. When it moves to the inner end, it is used to receive the products after dispensing by the second dispensing device 8 from the second loading robot 3. When it moves to the outer end, it is used for optical inspection. The second loading robot 3 is also used to transfer qualified products to the next process or the connection position of the next process, and to transfer unqualified products to the NG product temporary storage conveyor belt 12.

[0073] With the addition of the above components, the corresponding dispensing method will also change accordingly. Specifically, in step S12, the following sub-step is also included: S121, the third horizontal moving stage 11 drives the AOI optical inspection stage 10 to move to the inner end.

[0074] S122, the second loading robot 3 takes the product from the second product adsorption plate 71 and transfers it to the AOI optical inspection table 10;

[0075] S123, the third horizontal moving stage 11 drives the AOI optical inspection stage 10 to move to the outer end, and the AOI optical inspection device 9 performs optical inspection on the product to determine whether the product is qualified.

[0076] S124, the third horizontal moving stage 11 drives the AOI optical inspection stage 10 to move to the inner end;

[0077] S125, the second loading robot 3 will remove the qualified products from the AOI optical inspection table 10 and transfer them to the next process or the connection position of the next process, and remove the unqualified products from the AOI optical inspection table 10 and transfer them to the NG product temporary storage conveyor belt 12.

[0078] This application utilizes an AOI optical inspection device 9 to automatically inspect the appearance of products, which can detect various defects such as excessive glue, broken glue, bubbles, and glue dispensing outside the range. The second loading robot 3 uses a second loading robot 3 to remove the products judged as unqualified from the AOI optical inspection table 10 and transfer them to the NG product temporary storage conveyor belt 12 for buffering, waiting for manual re-judgment. This embodiment can not only automatically detect defective products, but also transfer them out when defective products are found, without the need for machine shutdown or manual waiting on site at all times.

[0079] Existing automated dispensing devices generally include a needle assembly and a three-axis moving platform. The three-axis moving platform drives the needle assembly to move and dispense adhesive. When the needle is facing down, it can perform planar dispensing. When the needle is tilted, it can also perform lateral dispensing. However, it is not very adaptable to narrow slits of different widths and depths on the side, and there are difficulties in dispensing. It is easy to have defects such as glue breakage, uneven glue flow, and air bubbles. It is also impossible to complete dispensing of multi-sided narrow slits in one go. When the needle assembly is tilted, the existing needle cleaning method is prone to poor cleaning, which in turn affects the dispensing effect and quality.

[0080] Reference Figure 5 and Figure 6 The second dispensing device 8 includes a rotary motor 80, a rotary motor mounting plate 82, a tilting motor 83, a tilting motor mounting plate 84, a locking clamp 85, and a needle assembly 86. The rotary motor 80 is vertically mounted on the rotary motor mounting plate 82. The rotary motor 80 is a hollow motor, including an outer stator 801 and a hollow rotor 802. The locking clamp 85 is located at the lower end of the hollow rotor 802. The tilting motor mounting plate 84 is located on the locking clamp 85. The tilting motor 83 is horizontally mounted on the tilting motor mounting plate 84. The needle assembly 86 is located on the motor shaft of the tilting motor 83. The cable of the tilting motor 83 and the glue tube 100 of the needle assembly 86 pass upward from inside the hollow rotor 802.

[0081] A rotary motor 80 is vertically mounted on a rotary motor mounting plate 82, and a tilting motor 83 is horizontally mounted on a tilting motor mounting plate 84. The rotary motor 80 drives the needle assembly 86 to rotate in the horizontal plane, while the tilting motor 83 drives the needle assembly 86 to rotate in the vertical plane. This combined motion allows for real-time adjustment of the orientation and tilt angle of the needle assembly 86, adapting to various dispensing trajectory requirements, especially for dispensing in multi-sided narrow slits. When the needle assembly 86 needs cleaning, rotating it downwards allows for cleaning, similar to existing technologies, minimizing cleaning defects and ensuring dispensing quality. The cable of the tilting motor 83 and the tube 100 of the needle assembly 86 both pass upwards through the hollow rotor 802 of the rotary motor 80, employing internal wiring. This prevents the tube 100 and cable from tangling or becoming taut with the rotary motor 80 during rotation and tilting, reducing wear and tear on the tube 100 and cable.

[0082] Reference Figure 10 The tilting motor mounting plate 84 is offsetly disposed on the locking clamp 85 to expose the through hole inside the hollow rotor 802; see reference Figure 11 The tilting motor 83 is offsetly mounted on the tilting motor mounting plate 84. A notch 841 is provided at the lower end of one side of the tilting motor mounting plate 84. The cable of the tilting motor 83 passes through the notch 841 and then enters the hollow rotor 802. This can shorten the wiring path and reduce the looseness of the cable.

[0083] Reference Figure 5 The second dispensing device 8 further includes a lifting assembly 87, which comprises a first mounting plate 871, a lifting plate 872, and a lifting drive mechanism 873. The lifting plate 872 is slidably mounted on the first mounting plate 871 via a guide rail slider assembly 874. The lifting drive mechanism 873 drives the lifting plate 872 to move up and down. The rotary motor mounting plate 82 is mounted on the lifting plate 872. The lifting drive mechanism 873 indirectly drives the needle assembly 86 to achieve the lifting function, thereby realizing a more complex dispensing path. The side of the rotary motor mounting plate 82 is also provided with a reinforcing plate 875 to strengthen the connection between the rotary motor mounting plate 82 and the lifting plate 872, thereby improving the connection rigidity of the rotary motor mounting plate 82 and maintaining minimal deformation when bearing the rotary motor 80 and the tilting motor 83.

[0084] Reference Figure 7 and Figure 8The lifting plate 872 is also equipped with a first angle sensor 88 for detecting the rotation angle of the hollow rotor 802; the tilting motor mounting plate 84 is also equipped with a second angle sensor 89 for detecting the tilt angle of the needle assembly 86, thereby adjusting the orientation and tilt angle of the needle assembly 86 according to the real-time detected angle to ensure the movement accuracy of the needle assembly 86 and improve the dispensing quality. The cable of the second angle sensor 89 also passes upward from inside the hollow rotor 802.

[0085] Reference Figure 5 and Figure 12 The second dispensing device 8 further includes a dispensing assembly 810, which is mounted on a lifting plate 872. The dispensing assembly 810 is connected to the needle assembly 86 via the dispensing tubes 100. The dispensing assembly 810 includes multiple glue bottles 8101 and multiple manual ball valves 8102. Each glue bottle 8101 is connected to the needle assembly 86 via multiple dispensing tubes 100, and each manual ball valve 8102 is mounted on a different dispensing tube 100. Because the dispensing assembly 810 is mounted on the lifting plate 872 and does not rotate with the rotary motor 80 or the tilting motor 83, it ensures stable dispensing. Normally, only one glue bottle 8101 supplies glue to the needle assembly 86. When the glue in the glue bottle 8101 is exhausted, the manual ball valve 8102 of the glue bottle 8101 is closed, and the manual ball valve 8102 of the other glue bottle 8101 is opened to achieve uninterrupted glue supply. When the glue in all glue bottles 8101 is exhausted, all glue bottles 8101 are removed and replaced with a new set of glue bottles 8101, which can reduce the frequency of downtime to replace glue bottles 8101.

[0086] Reference Figure 3The tilting motor mounting plate 84 is also provided with protective covers 811 on both sides. When the tilting motor 83 drives the needle assembly 86 to rotate, it does not exceed the protection range of the protective cover 811. The protective cover 811 is a hollow frame structure. The cable of the tilting motor 83 also passes through one of the protective covers 811. The first mounting plate 871 is also provided with a junction box 812. The lifting plate 872 is provided with a wire shield 813. The top of the wire shield 813 is provided with a clearance hole 8131. The junction box 812 is provided with a U-shaped cable routing tube 814. One end of the U-shaped cable routing tube 814 is fixed to the junction box 812, and the other end can move up and down in the clearance hole 8131. The cables of the rotary motor 80, the tilting motor 83, the first angle sensor 88 and the second angle sensor 89 are all routed through the U-shaped cable routing tube 814 and electrically connected to the junction box 812. The top of the wire shield 813 is also provided with a clearance hole 8131. One end of the U-shaped cable tray 814 is fixed to the junction box 812, and the other end can move up and down within the clearance hole 8131 without affecting the lifting and lowering of the wire shield 813. The cables of the rotary motor 80 and the tilt motor 83, as well as the cables of the first angle sensor 88 and the second angle sensor 89, are all routed through the U-shaped cable tray 814. The centralized routing of cables reduces the looseness of the cables and improves the appearance of the dispensing device. The protective cover 811 serves two purposes: first, it protects the needle assembly 86 when the tilt motor 83 drives it to rotate, preventing the needle from directly contacting or colliding with external objects; second, it acts as a cable routing and fixing frame for the tilt motor 83 cable. The cable passes through the inner cavity of the protective cover 811, which limits the range of cable movement and further reduces the looseness of the cable.

[0087] The operation process of the second dispensing device 8 in this application is as follows: Before dispensing, the rotary motor 80 and the tilting motor 83 adjust the orientation and tilting angle of the needle assembly 86 according to the input program, and then dispensing can begin; during dispensing, the orientation and angle of the needle assembly 86 can be adjusted in real time to adapt to the dispensing needs of narrow slits of different widths and depths, as well as multi-sided narrow slits; during the dispensing process, the rotation angle of the rotary motor 80 and the tilting angle of the tilting motor 83 can be detected in real time and fed back to the control system to continuously correct the dispensing orientation and dispensing angle of the needle assembly 86, thereby improving the dispensing efficiency. The control precision is improved; according to actual needs, after running for a certain period of time, the needle assembly 86 is rotated downwards to clean and maintain the needle, so as to reduce defects such as glue breakage, uneven glue feeding and air bubbles; when the glue in one glue bottle 8101 is exhausted, the manual ball valve 8102 corresponding to the glue bottle 8101 is closed, and the manual ball valve 8102 of the other glue bottle 8101 is opened, so as to ensure the continuous glue supply of the glue supply assembly 810. When the glue in the glue bottles 8101 is exhausted, a new glue bottle 8101 is replaced together, which can reduce the frequency of downtime to replace the glue bottles 8101.

[0088] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-sided dispensing device, characterized in that, It includes a feeding conveyor belt (1), a first feeding robot (2), a second feeding robot (3), a first dispensing platform (4), a first dispensing device (5), a UV adhesive curing platform (6), a second dispensing platform (7), and a second dispensing device (8); The feeding conveyor belt (1) is used to transport the product to the area below the first feeding robot (2); The first loading robot (2) is used to take the product from the loading conveyor belt (1) and transfer it to the first dispensing platform (4); The first dispensing platform (4) includes a first product adsorption plate (41), a flipping table (42), and a first horizontal moving table (43). The first product adsorption plate (41) is set on the flipping table (42), and the flipping table (42) is set on the first horizontal moving table (43). The first horizontal moving table (43) is used to drive the flipping table (42) to move horizontally. When it moves to the inner end, it is used to receive the product transmitted by the first loading robot (2). When it moves to the outer end, it is used to dispense glue. The flipping table (42) is used to drive the first product adsorption table to rotate 180 degrees and flip back after the first dispensing device (5) finishes dispensing glue. The first product adsorption plate (41) is used to adsorb and fix the product and expose the glue dispensing position on the back. The first dispensing device (5) is used to apply UV glue to the flipped product; The UV adhesive curing platform (6) is used to cure the UV adhesive on the product by irradiation; The second loading robot (3) is used to transfer the product flipped back on the first product adsorption plate (41) to the UV adhesive curing platform (6) so that it can be cured by UV lamp on the UV adhesive curing platform (6); The second loading robot (3) is also used to transfer the product on the UV adhesive curing platform (6) to the second dispensing platform (7); The second dispensing platform (7) includes a second product adsorption plate (71) and a second horizontal moving stage (72). The second product adsorption plate (71) is disposed on the second horizontal moving stage (72). The second horizontal moving stage (72) is used to drive the second product adsorption plate (71) to move horizontally. When it moves to the inner end, it is used to receive the product conveyed by the second feeding robot (3). When it moves to the outer end, it is used to dispense glue. The second product adsorption plate (71) is used to adsorb and fix the product. The second dispensing device (8) is used to dispense adhesive onto the product on the second product adsorption plate (71).

2. The double-sided dispensing equipment according to claim 1, characterized in that, The double-sided dispensing equipment also includes an AOI optical inspection device (9), an AOI optical inspection table (10), a third horizontal moving table (11), and an NG product temporary storage conveyor belt (12). The AOI optical inspection device (9) is used to perform appearance optical inspection on the products after dispensing by the second dispensing device (8) to determine whether the products are qualified. The AOI optical inspection table (10) is set on the third horizontal moving table (11). The third horizontal moving table (11) is used to drive the AOI optical inspection table (10) to move horizontally. When it moves to the inner end, it is used to receive the products after dispensing by the second dispensing device (8) from the second loading robot (3). When it moves to the outer end, it is used for optical inspection. The second loading robot (3) is also used to transfer qualified products to the next process or the connection position of the next process, and to transfer unqualified products to the NG product temporary storage conveyor belt (12).

3. The double-sided dispensing equipment according to claim 1, characterized in that, The second dispensing device (8) includes a rotary motor (80), a rotary motor mounting plate (82), a tilting motor (83), a tilting motor mounting plate (84), a locking clamp (85), and a needle assembly (86). The rotary motor (80) is vertically mounted on the rotary motor mounting plate (82). The rotary motor (80) is a hollow motor, including an outer stator (801) and a hollow rotor (802). The locking clamp (85) is located at the lower end of the hollow rotor (802). The tilting motor mounting plate (84) is located on the locking clamp (85). The tilting motor (83) is horizontally mounted on the tilting motor mounting plate (84). The needle assembly (86) is located on the motor shaft of the tilting motor (83). The cable of the tilting motor (83) and the glue tube (100) of the needle assembly (86) pass upward from inside the hollow rotor (802).

4. The double-sided dispensing equipment according to claim 3, characterized in that, The tilting motor mounting plate (84) is offset on the locking clamp (85) to expose the through hole in the hollow rotor (802); the tilting motor (83) is offset on the tilting motor mounting plate (84), and a notch (841) is provided at the lower end of one side of the tilting motor mounting plate (84), through which the cable of the tilting motor (83) passes into the hollow rotor (802).

5. The double-sided dispensing equipment according to claim 3, characterized in that, The second dispensing device (8) further includes a lifting assembly (87), which includes a first mounting plate (871), a lifting plate (872), and a lifting drive mechanism (873). The lifting plate (872) is slidably mounted on the first mounting plate (871) via a guide rail slider assembly (874). The lifting drive mechanism (873) is used to drive the lifting plate (872) to move up and down. The rotary motor mounting plate (82) is mounted on the lifting plate (872). The rotary motor mounting plate (82) also has a reinforcing plate (875) on its side to reinforce the connection between the rotary motor mounting plate (82) and the lifting plate (872).

6. The double-sided dispensing equipment according to claim 5, characterized in that, The lifting plate (872) is also provided with a first angle sensor (88) for detecting the rotation angle of the hollow rotor (802); the tilting motor mounting plate (84) is also provided with a second angle sensor (89) for detecting the tilt angle of the needle assembly (86), and the cable of the second angle sensor (89) also passes upward from inside the hollow rotor (802).

7. The double-sided dispensing equipment according to claim 3, characterized in that, The second dispensing device (8) further includes a glue supply assembly (810), which is mounted on the lifting plate (872). The glue supply assembly (810) is connected to the needle assembly (86) through the glue tube (100). The glue supply assembly (810) includes multiple glue bottles (8101) and multiple manual ball valves (8102). The multiple glue bottles (8101) are all connected to the needle assembly (86) through multiple glue tubes (100), and the multiple manual ball valves (8102) are respectively mounted on the multiple glue tubes (100).

8. The double-sided dispensing equipment according to claim 5, characterized in that, The tilting motor mounting plate (84) is also provided with protective covers (811) on both sides. When the tilting motor (83) drives the needle assembly (86) to rotate, it does not exceed the protection range of the protective cover (811). The protective cover (811) is a hollow frame structure. The cable of the tilting motor (83) also passes through one of the protective covers (811). The first mounting plate (871) is also provided with a junction box (812). The lifting plate (872) is provided with a wire shield (813). (813) A clearance hole (8131) is provided at the top. A U-shaped cable tray (814) is provided on the junction box (812). One end of the U-shaped cable tray (814) is fixed on the junction box (812), and the other end can move up and down in the clearance hole (8131). The cables of the rotary motor (80), tilt motor (83), first angle sensor (88) and second angle sensor (89) are all routed through the U-shaped cable tray (814) and electrically connected to the junction box (812).

9. A dispensing method for a double-sided dispensing device as described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1, place the product to be glued onto the feeding conveyor belt (1), and the feeding conveyor belt (1) transports the product to the bottom of the first feeding robot (2); S2, the first horizontal moving stage (43) moves the flipping stage (42) and the first product adsorption plate (41) to the inner end; S3, the first loading robot (2) takes the product from the loading conveyor belt (1) and transfers it to the first product adsorption plate (41) of the first dispensing platform (4); S4, after the first product adsorption plate (41) adsorbs the product, the first horizontal moving stage (43) moves the flipping stage (42) and the first product adsorption plate (41) to the outer end, and the flipping stage (42) flips the first product adsorption plate (41) and the product 180 degrees to expose the glue dotting position on the back of the product. S5, the first dispensing device (5) dispenses adhesive onto the back of the flipped product; S6, after dispensing glue, the flipping table (42) flips the first product adsorption plate (41) and the product back, and the first horizontal moving table (43) moves the flipping table (42) and the first product adsorption plate (41) to the inner end. S7, the second loading robot (3) takes the product from the first product adsorption plate (41) and transfers it to the UV adhesive curing platform (6). The UV lamp on the UV adhesive curing platform (6) irradiates and cures the UV adhesive on the product. S8, the second horizontal moving stage (72) moves the second product adsorption plate (71) to the inner end, and the second loading robot (3) takes the product from the UV glue curing platform (6) and transfers it to the second product adsorption plate (71); S9, after the second product adsorption plate (71) adsorbs the product, the second horizontal moving stage (72) moves the second product adsorption plate (71) to the outer end. S10, the second dispensing device (8) dispenses adhesive onto the product on the second product adsorption plate (71); S11, after dispensing the adhesive, the second horizontal moving stage (72) moves the second product adsorption plate (71) to the inner end; S12, the second loading robot (3) takes the product from the second product adsorption plate (71) and transfers it to the next process or the connection position of the next process.

10. The dispensing method of the double-sided dispensing equipment according to claim 9, characterized in that, Step S12 also includes the following sub-steps: S121, the third horizontal moving stage (11) drives the AOI optical inspection stage (10) to move to the inner end; S122, the second loading robot (3) takes the product from the second product adsorption plate (71) and transfers it to the AOI optical inspection stage (10); S123, the third horizontal moving stage (11) drives the AOI optical inspection stage (10) to move to the outer end, and the AOI optical inspection device (9) performs optical inspection on the product to determine whether the product is qualified; S124, the third horizontal moving stage (11) drives the AOI optical inspection stage (10) to move to the inner end; S125, the second loading robot (3) will take the qualified products from the AOI optical inspection table (10) and transfer them to the next process or the connection position of the next process, and will take the unqualified products from the AOI optical inspection table (10) and transfer them to the NG product temporary storage conveyor belt (12).

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