A dispensing device and dispensing method suitable for multiple types of workpieces

Abstract

The present invention discloses a dispensing device that is adaptable to multiple models of workpieces. A manipulator is installed with a connecting plate. Dispensing mechanisms are installed at the left and right ends of the connecting plate respectively. A visual recognition mechanism is installed in the middle of the connecting plate. The visual recognition mechanism includes a recognition processing circuit and a camera. The camera is installed in the middle of the connecting plate. The recognition processing circuit is arranged in a control mechanism. The control circuit is electrically connected to the recognition processing circuit. The recognition processing circuit is electrically connected to the camera. The visual recognition mechanism automatically identifies the model of the workpiece to be dispensed with glue. The manipulator is controlled to automatically complete the dispensing operation according to the coordinate information of the preset dispensing area and the glue output. The dispensing operation can be performed on television frames of different specifications and models at the same time without the need for batch multi-line operation, thereby improving production efficiency and reducing production costs. After taking a picture with the camera, the dispensing area is directly selected on the control interface without the need for programming to input the running trajectory of the manipulator. The device is easy to use and has a fast positioning speed.

Description

Technical Field

[0001] The present invention relates to the technical field of glue dispensing devices, and in particular to a glue dispensing device and a glue dispensing method thereof that are adaptable to workpieces of multiple models. Background Art

[0002] Televisions on the market have different specifications and sizes, such as 32 inches, 40 inches, 43 inches, 50 inches, 55 inches, 58 inches, 60 inches, 65 inches, 70 inches, 75 inches, 77 inches, 80 inches, 82 inches, 86 inches, 98 inches, and 100 inches. The frame size of each specification and size of television is different. During production, it is necessary to dispense glue on the frame of the television, and the dispensing positions of the frames of televisions of different specifications and sizes are different. Therefore, in the actual production process, in order to dispense glue on the frame of the television, it is necessary to open production lines of different sizes for the frames of televisions of different sizes, resulting in increased production costs. In the existing technology, the positioning jig is replaced or the dispensing coordinates are manually changed to produce different sizes of television frames on the same production line. The operation is cumbersome and the production efficiency is low. Moreover, it is impossible to dispense glue on the frames of televisions of different specifications and sizes at the same time. The glue must be dispensed in batches according to size, which has poor flexibility. In addition, when AB glue is mixed and discharged, a polymerization reaction occurs, which generates a large amount of heat, thereby increasing the temperature and causing the glue outlet to harden and become blocked, resulting in uneven glue discharge and inaccurate glue discharge control. Therefore, it is necessary to improve it. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a dispensing device and a dispensing method that are suitable for multiple types of workpieces. It has high production efficiency, low production cost, automatic identification of dispensing positions, and can simultaneously perform dispensing operations on TV frames of different specifications and models. The glue output is precisely controlled and there is no clogging.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a dispensing device suitable for multiple types of workpieces, including a feeding mechanism, a frame, two feeding mechanisms, two positioning mechanisms, a control mechanism and at least one manipulator, the frame is provided with a workbench, the two feeding mechanisms are respectively installed on the left and right sides of the workbench, the two positioning mechanisms are respectively arranged on the sides of the two feeding mechanisms, the manipulator is fixedly installed in the middle of the workbench, the feeding mechanism is arranged on the front side of the frame, the feeding mechanism and the two feeding mechanisms are located in the same horizontal plane, the control mechanism is installed on the frame, the control mechanism is provided with a control circuit, and the control circuit is electrically connected to the feeding mechanism, the two feeding mechanisms, the two positioning mechanisms and the manipulator respectively;

[0005] The manipulator is equipped with a connecting plate, and a dispensing mechanism is installed on the left and right ends of the connecting plate respectively. A visual recognition mechanism is installed in the middle of the connecting plate. The visual recognition mechanism includes a recognition processing circuit and a camera. The camera is installed in the middle of the connecting plate. The recognition processing circuit is set in the control mechanism. The control circuit is electrically connected to the recognition processing circuit, and the recognition processing circuit is electrically connected to the camera.

[0006] Each positioning mechanism includes a positioning bracket and a positioning drive mechanism for driving the positioning bracket to move up and down. The positioning drive mechanism is fixedly mounted on the workbench and is transmission-connected to the positioning bracket. The positioning bracket abuts against the corresponding feeding mechanism in the vertical direction.

[0007] The dispensing mechanism includes an AB dispensing valve, a mixing tube, a refrigeration plate and a cooling mechanism. The left and right ends of the connecting plate are respectively provided with dispensing fixing frames. The AB dispensing valve is fixedly mounted on the dispensing fixing frames. The mixing tube is connected to the dispensing outlet of the AB dispensing valve. The cooling surface of the refrigeration plate is in close contact with the mixing tube. The refrigeration plate is electrically connected to the control circuit. The cooling mechanism is fixedly mounted on the dispensing fixing frames. The heating surface of the refrigeration plate is in close contact with the cooling mechanism. Coolant is injected into the cooling mechanism.

[0008] The cooling mechanism includes a constant temperature seat, a water cooling radiator, and a water storage power assembly. The constant temperature seat is fixedly installed on the dispensing fixing frame. The constant temperature seat is close to the heating surface of the refrigeration plate. The constant temperature seat is connected to the water storage power assembly, and the water storage power assembly is connected to the water cooling radiator.

[0009] In a further technical solution, the constant temperature seat includes an aluminum seat body and a copper pressure cover. The copper pressure cover is fixedly installed on the upper part of the aluminum seat body. The aluminum seat body is provided with a circulating water tank with an opening facing upward. Two constant temperature connectors are arranged at intervals on one side of the aluminum seat body. The circulating water tank is bent and circuitously arranged. The two ends of the circulating water tank are respectively connected to the two constant temperature connectors. The copper pressure cover seals the circulating water tank. A plurality of copper bars are welded and fixed to the bottom surface of the copper pressure cover. Each copper bar is inserted into the circulating water tank. The surface of the copper bar is plated with a thermal conductive silver layer. The copper bar and the copper pressure cover are welded and fixed by a copper-silver alloy welding layer. The heating surface of the refrigeration plate is close to the upper surface of the copper pressure cover.

[0010] In a further technical solution, the water storage power assembly includes a water tank and a water pump. The water pump is arranged inside the water tank and is electrically connected to the control circuit. A first connecting hose is connected between the thermostatic seat and the water storage power assembly, one end of the first connecting hose is connected to the thermostatic seat, and the other end of the first connecting hose is connected to the water outlet of the water pump. A second connecting hose is connected between the water storage power assembly and the water cooling radiator, one end of the second connecting hose is connected to the water tank, and the other end of the second connecting hose is connected to the water cooling radiator. A third connecting hose is connected between the water cooling radiator and the thermostatic seat, one end of the third connecting hose is connected to the water cooling radiator, and the other end of the third connecting hose is connected to the thermostatic seat.

[0011] In a further technical solution, the feeding mechanism is a feeding conveyor belt, and the feeding mechanism includes a feeding drive motor, a feeding belt, a feeding bracket, a feeding active wheel and a feeding passive wheel. The feeding bracket is installed on a workbench, and the feeding active wheel and the feeding passive wheel are rotatably installed on the front and rear ends of the feeding bracket respectively. The feeding belt is transmission-connected between the feeding active wheel and the feeding passive wheel. The feeding drive motor is fixedly installed on the workbench, and the feeding drive motor is transmission-connected to the feeding active wheel. Each positioning bracket is cooperated with the corresponding feeding belt.

[0012] In a further technical solution, the positioning bracket is provided with a positioning groove, the front or rear side of the positioning groove has a notch, and at least one positioning block is provided on the inner side of the positioning groove. The positioning drive mechanism includes a locking plate and a positioning drive cylinder. The positioning drive cylinder is fixedly installed on the workbench, and the piston rod of the positioning drive cylinder moves in a vertical direction. One side of the locking plate is fixedly connected to the top of the piston rod, and the other side of the locking plate is fixedly connected to the positioning bracket.

[0013] In a further technical solution, each positioning bracket is provided with at least two positioning grooves, which are arranged side by side and spaced apart in the left and right directions. Two dispensing mechanisms are respectively installed at the left and right ends of the connecting plate, and the spacing between the two mixing tubes of the two dispensing mechanisms is the same as the spacing between the two positioning grooves.

[0014] In a further technical solution, the thermostatic seat has the following processing steps:

[0015] The aluminum base body forming step is to melt the aluminum material at high temperature and obtain the aluminum base body through a casting process;

[0016] The copper gland processing steps include cutting a copper plate according to the size of the aluminum base to obtain a copper gland, then silver-plating the surface of the copper strip through a chemical plating process to form a thermally conductive silver layer on the surface of the copper strip, and then selecting AgCu7.5, AgCu25, AgCu28, and AgCu55 as solders, and soldering each silver-plated copper strip to the bottom surface of the copper gland through a brazing process;

[0017] The assembly steps are as follows: first preheat the copper gland, then cover the copper gland on the upper part of the aluminum base so that each copper bar is inserted into the circulating water tank, and then weld the copper gland and the aluminum base with flux to seal the circulating water tank.

[0018] A dispensing method suitable for multiple types of workpieces includes the following steps:

[0019] Feeding step, the workpiece is transferred to the feeding belt by the feeding mechanism, and the control circuit controls the feeding drive motor to completely transfer the workpiece to the feeding belt;

[0020] In the positioning and locking step, the control circuit controls the positioning drive mechanism to move downward, so that the positioning bracket abuts against the feeding belt and the workpiece falls into the positioning groove, and the positioning block is limitedly engaged with the notch on the workpiece;

[0021] In the visual recognition step, the control circuit controls the robot to move to the top of the feeding mechanism on either side. The camera takes a vertical picture of the workpiece, obtains a positioning picture, and sends it to the recognition processing circuit. The recognition processing circuit determines the specifications and model of the workpiece based on the positioning picture and analyzes it to obtain the coordinate information of the area to be dispensed.

[0022] In the dispensing step, the control circuit receives the coordinate information sent by the recognition processing circuit, controls the movement of the robot arm, and controls the AB dispensing valves to dispense glue according to the preset glue amount;

[0023] In the discharging step, the control circuit controls the positioning drive mechanism to move upward so that the positioning bracket is away from the feeding belt, and the control circuit controls the feeding drive motor to transport the workpiece away from the feeding belt.

[0024] In a further technical solution, a parameter setting step is included before the visual recognition step, and the parameter setting step includes the following sub-steps:

[0025] In the photo taking sub-step, the workpiece for which data is to be entered is positioned through the feeding mechanism and the delivery mechanism. The control circuit controls the manipulator to move to the top of the workpiece, and the camera takes a vertical photo of the workpiece to obtain the picture to be set.

[0026] In the marking sub-step, the recognition processing circuit analyzes the workpiece in the picture to be set and marks the workpiece model in the picture to be set, receives the picture to be set sent by the recognition processing circuit through the control interface and manually selects the area to be glued, and the recognition processing circuit receives the picture to be set with the area to be glued marked and marks the coordinate information and workpiece model information of the area to be glued, obtains the marked picture and stores it in the storage unit of the control circuit.

[0027] In a further technical solution, the storage unit pre-stores a model-coordinate execution relationship table, the model-coordinate execution relationship table is provided with a plurality of groups of model-coordinate parameter instruction sets, each group of model-coordinate parameter instruction sets includes a model parameter, one or more dispensing coordinate parameters and a dispensing amount parameter;

[0028] The control interface is provided with control buttons and / or a touch screen for inputting model parameters, dispensing coordinate parameters and dispensing amount parameters, and the control buttons and touch screen are electrically connected to the control circuit respectively;

[0029] In the visual recognition step, the recognition processing circuit compares the positioning image with the mark image stored in the storage unit, identifies and analyzes the workpiece model information in the positioning image, and then controls the robot to run to the corresponding dispensing area and controls the AB dispensing valve to extrude the corresponding amount of glue according to the model-coordinate execution relationship table.

[0030] After adopting the above structure, the advantages of the present invention compared with the prior art are: the workpiece model of the workpiece to be glued is automatically identified through a visual recognition mechanism, and the robot is controlled to automatically complete the glue dispensing operation according to the preset coordinate information of the glue dispensing area and the glue output. It can simultaneously perform glue dispensing operations on TV frames of different specifications and models without the need for batch and multi-line operations, thereby improving production efficiency and reducing production costs; after taking a picture with a camera, the glue dispensing area is directly selected on the control interface without the need to input the operation trajectory of the robot through programming, which is easy to use and has a fast positioning speed; the mixing pipe is kept at a constant temperature through the refrigeration plate and the cooling mechanism, thereby reducing the heat generated by the AB glue during mixing and dispensing, preventing the glue outlet from hardening and clogging, maintaining a constant glue output flow rate, and making the glue output more accurate, further improving the glue application speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the accompanying drawings and examples.

[0032] Figure 1 It is a structural schematic diagram of the present invention;

[0033] Figure 2 This is a schematic diagram of the positioning mechanism of the present invention before positioning;

[0034] Figure 3 It is a schematic structural diagram of the manipulator of the present invention;

[0035] Figure 4 It is a structural schematic diagram of the dispensing mechanism of the present invention;

[0036] Figure 5 is a top view of the positioning bracket of the present invention;

[0037] Figure 6 is a cross-sectional view of the thermostatic seat of the present invention;

[0038] Figure 7 is a cross-sectional view of the aluminum seat body of the present invention;

[0039] Figure 8 It is a program flow chart of the dispensing method of the present invention.

[0040] In the picture:

[0041] 1. Feeding mechanism;

[0042] 2 racks, 21 workbenches;

[0043] 3 feeding mechanism, 31 feeding drive motor, 32 feeding belt, 33 feeding bracket;

[0044] 41 positioning bracket, 411 positioning groove, 412 notch, 413 positioning block, 42 ​​positioning drive cylinder, 43 locking plate;

[0045] 5. Robot arm, 51. Connecting plate, 52. Glue dispensing fixing frame;

[0046] 6 cameras;

[0047] 7 dispensing mechanism, 71AB dispensing valve, 72 mixing hose, 73 cooling plate, 74 constant temperature seat, 75 water cooling radiator, 76 water storage power assembly, 77 first connecting hose, 78 second connecting hose, 79 third connecting hose;

[0048] 81 aluminum base, 811 circulating water tank, 812 constant temperature connector, 82 copper gland, 821 copper bar, 822 thermal conductive silver layer, 823 copper-silver alloy welding layer. DETAILED DESCRIPTION

[0049] The following are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention.

[0050] A dispensing device suitable for various types of workpieces, such as Figures 1 to 7As shown, it includes a feeding mechanism 1, a frame 2, two feeding mechanisms 3, two positioning mechanisms, a control mechanism and at least one manipulator 5. The frame 2 is provided with a workbench 21. The two feeding mechanisms 3 are respectively installed on the left and right sides of the workbench 21. The two positioning mechanisms are respectively arranged beside the two feeding mechanisms 3. The manipulator 5 is fixedly installed in the middle of the workbench 21. The feeding mechanism 1 is arranged on the front side of the frame 2. The feeding mechanism 1 and the two feeding mechanisms 3 are located on the same horizontal plane. The control mechanism is installed on the frame 2. The control mechanism is provided with a control circuit. The control circuit is electrically connected to the feeding mechanism 1, the two feeding mechanisms 3, the two positioning mechanisms and the manipulator 5 respectively; the manipulator 5 is equipped with a connecting plate 51, and the left and right ends of the connecting plate 51 are respectively equipped with a glue-dispensing mechanism 7, and the middle part of the connecting plate 51 is equipped with a visual recognition mechanism, which includes a recognition processing circuit and a camera 6. The camera 6 is installed in the middle part of the connecting plate 51, and the recognition processing circuit is arranged in the control mechanism. The control circuit is electrically connected to the recognition processing circuit, and the recognition processing circuit is electrically connected to the camera 6. Each positioning mechanism includes The positioning bracket 41 and the positioning drive mechanism for driving the positioning bracket 41 to move up and down are fixedly mounted on the workbench 21. The positioning drive mechanism is connected to the positioning bracket 41 in a transmission manner. The positioning bracket 41 abuts against the corresponding feeding mechanism 3 in the vertical direction. The dispensing mechanism 7 includes an AB dispensing valve 71, a mixing tube 72, a refrigeration plate 73 and a cooling mechanism. The left and right ends of the connecting plate 51 are respectively provided with a dispensing fixed frame 52. The AB dispensing valve 71 is fixedly mounted on the dispensing fixed frame 52. The mixing tube 72 is connected to the AB dispensing valve 71. The glue outlet, the cooling surface of the refrigeration plate 73 is in close contact with the glue mixing tube 72, the refrigeration plate 73 is electrically connected to the control circuit, the cooling mechanism is fixedly installed on the glue dispensing fixed frame 52, the heating surface of the refrigeration plate 73 is in close contact with the cooling mechanism, and coolant is injected into the interior of the cooling mechanism; the cooling mechanism includes a constant temperature seat 74, a water cooling row 75, and a water storage power assembly 76. The constant temperature seat 74 is fixedly installed on the glue dispensing fixed frame 52, the constant temperature seat 74 is in close contact with the heating surface of the refrigeration plate 73, the constant temperature seat 74 is connected to the water storage power assembly 76, and the water storage power assembly 76 is connected to the water cooling row 75.

[0051] The traditional dispensing mechanism 7 must manually input the coordinate information of the dispensing area through programming, which is inconvenient to use and complicated to operate. It is also impossible to perform dispensing operations on TV frames of different specifications and models at the same time. It is necessary to open multiple production lines, which has low production efficiency and high cost. The present invention automatically identifies the workpiece model of the workpiece to be dispensed through a visual recognition mechanism, and controls the manipulator 5 to automatically complete the dispensing operation according to the preset coordinate information of the dispensing area and the amount of glue output. It can perform dispensing operations on TV frames of different specifications and models at the same time, without the need for batch multi-line operations, thereby improving production efficiency and reducing production costs. After taking a picture through the camera 6, the dispensing area is directly selected on the control interface, without the need to input the running trajectory of the manipulator through programming. It is easy to use and has a fast positioning speed. The mixing pipe 72 is kept at a constant temperature by the refrigeration plate 73 and the cooling mechanism, reducing the heat generated by the AB glue when mixing and dispensing, preventing the glue outlet from hardening and clogging, maintaining a constant glue flow rate, and making the glue output more accurate, further improving the glue application speed.

[0052] Specifically, if Figure 6 and Figure 7 As shown, the thermostatic seat 74 includes an aluminum seat body 81 and a copper pressure cover 82. The copper pressure cover 82 is fixedly installed on the upper part of the aluminum seat body 81. The aluminum seat body 81 is provided with a circulating water tank 811 with an opening facing upward. Two thermostatic connectors 812 are arranged at intervals on one side of the aluminum seat body 81. The circulating water tank 811 is bent and circuitously arranged. The two ends of the circulating water tank 811 are respectively connected to the two thermostatic connectors 812. The copper pressure cover 82 seals the circulating water tank 811. A plurality of copper bars 821 are welded and fixed to the bottom surface of the copper pressure cover 82. Each copper bar 821 is inserted into the circulating water tank 811. The surface of the copper bar 821 is plated with a thermal conductive silver layer 822. The copper bar 821 and the copper pressure cover 82 are welded and fixed by a copper-silver alloy welding layer 823. The heating surface of the refrigeration plate 73 is close to the upper surface of the copper pressure cover 82. In the prior art, although there are also methods of cooling by water cooling mechanism, the heat dissipation effect is improved by increasing the power of the water storage power component 76, but increasing the power of the water storage power component 76 requires a large amount of electricity, and the high-power water storage power component 76 itself has a higher cost, larger volume and weight, which will increase the bearing pressure of the manipulator 5. The present invention blocks the coolant through the copper bar 821 in the circulating water tank 811, reduces the cross-section of the circulating water tank 811 at intervals, increases the flow rate of the coolant, and improves the heat dissipation effect.

[0053] Specifically, the water storage power assembly 76 includes a water tank and a water pump. The water pump is arranged inside the water tank and is electrically connected to the control circuit. A first connecting hose 77 is connected between the thermostatic seat 74 and the water storage power assembly 76. One end of the first connecting hose 77 is connected to the thermostatic seat 74, and the other end of the first connecting hose 77 is connected to the water outlet of the water pump. A second connecting hose 78 is connected between the water storage power assembly 76 and the radiator 75. One end of the second connecting hose 78 is connected to the water tank, and the other end of the second connecting hose 78 is connected to the radiator 75. A third connecting hose 79 is connected between the radiator 75 and the thermostatic seat 74. One end of the third connecting hose 79 is connected to the radiator 75, and the other end of the third connecting hose 79 is connected to the thermostatic seat 74. Coolant is injected into the water tank, and the water pump pumps the coolant in the water tank to the water-cooled head 74 through the first connecting hose 77. The coolant takes away the heat of the water-cooled head 74 through the circulating water channel and enters the water-cooled radiator 75 through the third connecting hose 79. The coolant quickly dissipates heat and cools down through the water-cooled radiator 75, and then re-enters the water tank through the second connecting hose 78, thereby circulating the heat.

[0054] Specifically, the feeding mechanism 1 is a feeding conveyor belt, and the feeding mechanism 3 includes a feeding drive motor 31, a feeding belt 32, a feeding bracket 33, a feeding active wheel and a feeding passive wheel. The feeding bracket 33 is installed on the workbench 21, and the feeding active wheel and the feeding passive wheel are rotatably installed on the front and rear ends of the feeding bracket 33 respectively. The feeding belt 32 is transmission-connected between the feeding active wheel and the feeding passive wheel. The feeding drive motor 31 is fixedly installed on the workbench 21, and the feeding drive motor 31 is transmission-connected to the feeding active wheel. Each positioning bracket 41 is pressed against the corresponding feeding belt 32. The feeding conveyor belt conveys the workpiece to the feeding belt 32 of the feeding mechanism 3, and the feeding drive motor 31 drives the feeding active wheel to rotate, and drives the feeding passive wheel to rotate synchronously through the feeding belt 32. The feeding belt 32 rotates back and forth under the rotation of the feeding active wheel and the feeding passive wheel, thereby moving the workpiece from front to back to the center of the workbench 21, and moving the workpiece to directly below the positioning bracket 41. The feeding belt 32 serves as a carrying platform while conveying the workpiece, and no additional gripping mechanism is required for loading. The structure is simple and the cost is low.

[0055] Specifically, the positioning bracket 41 is provided with a positioning groove 411, which has a notch 412 on the front or rear side. At least one positioning block 413 is provided inside the positioning groove 411. The positioning drive mechanism includes a locking plate 43 and a positioning drive cylinder 42. The positioning drive cylinder 42 is fixedly mounted on the workbench 21. The piston rod of the positioning drive cylinder 42 moves in a vertical direction. One side of the locking plate 43 is fixedly connected to the top of the piston rod, and the other side of the locking plate 43 is fixedly connected to the positioning bracket 41. The feeding mechanism 3 transports the workpiece to the bottom of the positioning bracket 41. The positioning drive cylinder 42 drives the locking plate 43 to descend, thereby moving the positioning bracket 41 downward, causing the workpiece to fall into the positioning groove 411. At the same time, the positioning block 413 is engaged with the notch on the workpiece to complete the positioning.

[0056] Specifically, each positioning bracket 41 is provided with at least two positioning slots 411, which are spaced side by side in the left-right direction. Two dispensing mechanisms 7 are mounted on the left and right ends of the connecting plate 51, respectively. The spacing between the two mixing tubes 72 of the two dispensing mechanisms 7 is the same as the spacing between the two positioning slots 411. A single positioning mechanism simultaneously positions two workpieces on the same side, improving positioning efficiency. The distance between the centers of the two positioning slots 411 is the same as the spacing between the two dispensing mechanisms 7 on the same side. When the two workpieces on the same side are of the same specifications and models, the robot 5 can simultaneously dispense glue on both workpieces in a single operation, improving dispensing efficiency.

[0057] Specifically, the thermostatic seat 74 has the following processing steps:

[0058] Aluminum seat body forming step, wherein the aluminum material is melted at high temperature and the aluminum seat body 81 is obtained through a casting process;

[0059] The copper gland processing step involves cutting a copper plate to the size of the aluminum base 81 to form a copper gland 82. The copper strips are then silver-plated using a chemical plating process to form a thermally conductive silver layer 822 on the surface of the copper strips. AgCu7.5, AgCu25, AgCu28, or AgCu55 are then used as solders. Each silver-plated copper strip 821 is soldered to the bottom surface of the copper gland 82 using a brazing process. The solder forms a copper-silver alloy solder layer 823 between the copper strips 821 and the copper gland 82.

[0060] The assembly steps are as follows: first preheat the copper pressure cover 82, then cover the copper pressure cover 82 on the upper part of the aluminum base 81, so that each copper bar 821 is inserted into the circulating water tank 811, and then weld the copper pressure cover 82 to the aluminum base 81 with flux to seal the circulating water tank 811.

[0061] Aluminum base 81 is made of aluminum, which has a thermal conductivity of 237 W / mk. Due to its large size, aluminum was chosen to balance cost and thermal conductivity. Copper gland 82 is smaller and requires less material, so copper is used. Copper has a thermal conductivity of 401 W / mk, offering better thermal conductivity. Copper gland 82 is in contact with the heat source, and thus has a higher thermal conductivity, allowing it to more quickly transfer heat to the coolant and aluminum base 81. Copper strip 821 is coated with a thermally conductive silver layer 822. Silver has a thermal conductivity of 429 W / mk, which is higher than that of copper. Therefore, plating copper strip 821 with silver further improves its thermal conductivity while reducing the amount of silver used and production costs. The copper-silver alloy welding layer 823 is a connection layer produced by welding the copper gland 82 and the silver-plated copper strip 821 with silver-copper alloy as a solder. The silver-copper alloy has the characteristics of high hardness, good electrical and thermal conductivity and low price. While reducing costs, the copper gland 82 and the copper strip 821 are connected through the copper-silver alloy welding layer 823 with good thermal conductivity to prevent heat conduction blockage and further improve the heat dissipation effect.

[0062] A dispensing method suitable for multiple types of workpieces, such as Figure 8 As shown, the following steps are included:

[0063] Feeding step: the workpiece is transferred to the feeding belt 32 by the feeding mechanism 1, and the control circuit controls the feeding drive motor 31 to completely transfer the workpiece to the feeding belt 32;

[0064] In the positioning and locking step, the control circuit controls the positioning drive mechanism to move downward, so that the positioning bracket 41 abuts against the feeding belt 32, and the workpiece falls into the positioning groove 411, and the positioning block 413 is limitedly engaged with the notch on the workpiece;

[0065] The parameter setting step includes the following sub-steps:

[0066] In the photographing sub-step, the workpiece to be recorded is positioned by the feeding mechanism 1 and the feeding mechanism 3, the manipulator 5 is controlled by the control circuit to move to the top of the workpiece, and the camera 6 photographs the workpiece in a vertical direction to obtain the picture to be set;

[0067] In the marking substep, the recognition processing circuit analyzes the workpiece in the image to be set and marks the workpiece model in the image to be set. The control interface receives the image to be set from the recognition processing circuit and manually selects the area to be glued. The recognition processing circuit receives the image to be set with the marked area to be glued, marks the coordinate information of the area to be glued and the workpiece model information, obtains the marked image, and stores it in the storage unit of the control circuit. An image comparison library is formed by photographing and marking the frames of televisions of different specifications and models. The storage unit pre-stores a model-coordinate execution relationship table, which contains multiple sets of model-coordinate parameter instruction sets. Each set of model-coordinate parameter instruction sets includes a model parameter, one or more glue coordinate parameters, and a glue quantity parameter. The control interface is provided with control buttons and / or a touch screen for inputting the model parameter, glue coordinate parameters, and glue quantity parameters. The control buttons and touch screen are electrically connected to the control circuit. The model parameter, glue coordinate parameter, and glue quantity parameter of each marked image in the image comparison library are respectively stored in the model-coordinate parameter instruction set of the model-coordinate execution relationship table.

[0068] In the visual recognition step, the control circuit controls the robot 5 to move above the feeding mechanism 3 on either side. The camera 6 captures the workpiece vertically, obtains a positioning image, and sends it to the recognition processing circuit. The recognition processing circuit compares the positioning image with the marked images stored in the storage unit. If a marked image with a similarity greater than or equal to 90% is found, the circuit identifies and analyzes the workpiece model information in the positioning image. Based on the model-coordinate execution relationship table, the robot 5 is controlled to move to the corresponding dispensing area and the AB dispensing valve 71 is controlled to extrude the corresponding amount of glue. If no marked image with a similarity greater than or equal to 90% is found, the positioning image is sent to the control interface for manual confirmation, and the marking sub-step is repeated.

[0069] In the dispensing step, the control circuit receives the coordinate information sent by the recognition and processing circuit, controls the movement of the manipulator 5, and controls the AB dispensing valve 71 to dispense glue according to the preset glue amount; when the manipulator 5 performs the dispensing operation on the workpiece on the positioning mechanism 3 on one side, the positioning mechanism 3 on the other side executes the feeding step under the drive of the feeding mechanism 3, and the feeding mechanisms 3 on the left and right sides perform the feeding step alternately, thereby improving production efficiency.

[0070] In the unloading step, the control circuit controls the positioning drive mechanism to move upward, so that the positioning bracket 41 is away from the feeding belt 32 , and the control circuit controls the feeding drive motor 31 to transport the workpiece away from the feeding belt 32 .

[0071] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A dispensing device suitable for various types of workpieces, characterized by: The invention comprises a feeding mechanism (1), a frame (2), two feeding mechanisms (3), two positioning mechanisms, a control mechanism and at least one manipulator (5); the frame (2) is provided with a workbench (21); the two feeding mechanisms (3) are respectively installed on the left and right sides of the workbench (21); the two positioning mechanisms are respectively arranged on the sides of the two feeding mechanisms (3); the manipulator (5) is fixedly installed in the middle of the workbench (21); the feeding mechanism (1) is arranged on the front side of the frame (2); the feeding mechanism (1) and the two feeding mechanisms (3) are located on the same horizontal plane; the control mechanism is installed on the frame (2); the control mechanism is provided with a control circuit; the control circuit is respectively electrically connected to the feeding mechanism (1), the two feeding mechanisms (3), the two positioning mechanisms and the manipulator (5); The manipulator (5) is provided with a connecting plate (51), and a dispensing mechanism (7) is provided at the left and right ends of the connecting plate (51), respectively. A visual recognition mechanism is provided in the middle of the connecting plate (51), and the visual recognition mechanism includes a recognition processing circuit and a camera (6). The camera (6) is provided in the middle of the connecting plate (51), and the recognition processing circuit is provided in the control mechanism. The control circuit is electrically connected to the recognition processing circuit, and the recognition processing circuit is electrically connected to the camera (6). Each positioning mechanism includes a positioning bracket (41) and a positioning drive mechanism for driving the positioning bracket (41) to move up and down, the positioning drive mechanism being fixedly mounted on the workbench (21), the positioning drive mechanism being in transmission connection with the positioning bracket (41), and the positioning bracket (41) abutting against the corresponding feeding mechanism (3) in the vertical direction; The dispensing mechanism (7) includes an AB dispensing valve (71), a mixing glue tube (72), a refrigeration plate (73) and a cooling mechanism. The left and right ends of the connecting plate (51) are respectively provided with a dispensing fixing frame (52). The AB dispensing valve (71) is fixedly mounted on the dispensing fixing frame (52). The mixing glue tube (72) is connected to the glue outlet of the AB dispensing valve (71). The cooling surface of the refrigeration plate (73) is in close contact with the mixing glue tube (72). The refrigeration plate (73) is electrically connected to the control circuit. The cooling mechanism is fixedly mounted on the dispensing fixing frame (52). The heating surface of the refrigeration plate (73) is in close contact with the cooling mechanism. Cooling liquid is injected into the interior of the cooling mechanism. The cooling mechanism includes a thermostatic seat (74), a water cooling row (75), and a water storage power assembly (76). The thermostatic seat (74) is fixedly mounted on the dispensing fixed frame (52). The thermostatic seat (74) is in close contact with the heating surface of the refrigeration plate (73). The thermostatic seat (74) is connected to the water storage power assembly (76), and the water storage power assembly (76) is connected to the water cooling row (75). The thermostatic seat (74) includes an aluminum seat body (81) and a copper pressure cover (82). The copper pressure cover (82) is fixedly mounted on the upper portion of the aluminum seat body (81). The aluminum seat body (81) is provided with a circulating water tank (811) with an opening facing upward. Two thermostatic connectors (812) are spaced apart on one side of the aluminum seat body (81). The circulating water tank (811) is bent and circuitously arranged. The two ends of the circulating water tank (811) are respectively connected to the two thermostatic connectors (812). The pressure cover (82) seals the circulating water tank (811), and a plurality of copper bars (821) are welded and fixed to the bottom surface of the copper pressure cover (82), and each copper bar (821) is inserted into the circulating water tank (811). The surface of the copper bar (821) is plated with a heat-conducting silver layer (822), and the copper bar (821) and the copper pressure cover (82) are welded and fixed by a copper-silver alloy welding layer (823), and the heating surface of the refrigeration plate (73) is in close contact with the upper surface of the copper pressure cover (82); The positioning bracket (41) is provided with a positioning groove (411), the front side or the rear side of the positioning groove (411) has a notch (412), the inner side of the positioning groove (411) is provided with at least one positioning block (413), the positioning drive mechanism includes a locking plate (43) and a positioning drive cylinder (42), the positioning drive cylinder (42) is fixedly mounted on the workbench (21), the piston rod of the positioning drive cylinder (42) moves in a vertical direction, one side of the locking plate (43) is fixedly connected to the top of the piston rod, and the other side of the locking plate (43) is fixedly connected to the positioning bracket (41).

2. The dispensing device for multiple types of workpieces according to claim 1, characterized in that: The water storage power assembly (76) includes a water tank and a water pump. The water pump is arranged inside the water tank and is electrically connected to the control circuit. A first connecting hose (77) is connected between the thermostatic seat (74) and the water storage power assembly (76). One end of the first connecting hose (77) is connected to the thermostatic seat (74), and the other end of the first connecting hose (77) is connected to the water outlet of the water pump. A second connecting hose (78) is connected between the water storage power assembly (76) and the water cooling radiator (75). One end of the second connecting hose (78) is connected to the water tank, and the other end of the second connecting hose (78) is connected to the water cooling radiator (75). A third connecting hose (79) is connected between the water cooling radiator (75) and the thermostatic seat (74). One end of the third connecting hose (79) is connected to the water cooling radiator (75), and the other end of the third connecting hose (79) is connected to the thermostatic seat (74).

3. The dispensing device adapted to various types of workpieces according to claim 1, characterized in that: The feeding mechanism (1) is a feeding conveyor belt, and the feeding mechanism (3) includes a feeding drive motor (31), a feeding belt (32), a feeding bracket (33), a feeding active wheel and a feeding passive wheel. The feeding bracket (33) is installed on the workbench (21), the feeding active wheel and the feeding passive wheel are rotatably installed on the front and rear ends of the feeding bracket (33), respectively, the feeding belt (32) is transmission-connected between the feeding active wheel and the feeding passive wheel, the feeding drive motor (31) is fixedly installed on the workbench (21), the feeding drive motor (31) is transmission-connected to the feeding active wheel, and each of the positioning brackets (41) is abutted against the corresponding feeding belt (32).

4. The dispensing device for multiple types of workpieces according to claim 1, characterized in that: Each positioning bracket (41) is provided with at least two positioning grooves (411), and the two positioning grooves (411) are arranged side by side and spaced apart in the left-right direction. Two dispensing mechanisms (7) are respectively installed at the left and right ends of the connecting plate (51), and the spacing between the two mixing glue tubes (72) of the two dispensing mechanisms (7) is the same as the spacing between the two positioning grooves (411).

5. The dispensing device adapted to various types of workpieces according to claim 1, characterized in that: The thermostatic seat (74) has the following processing steps, an aluminum seat body forming step, wherein the aluminum material is melted at a high temperature and the aluminum seat body (81) is obtained by a casting process; The copper gland processing step comprises cutting the copper plate according to the size of the aluminum base (81) to obtain the copper gland (82), then silver-plating the surface of the copper strip by chemical plating to form the heat-conducting silver layer (822) on the surface of the copper strip, and then selecting AgCu7.5, AgCu25, AgCu28, and AgCu55 as solders, and soldering each silver-plated copper strip (821) to the bottom surface of the copper gland (82) by soldering, so that the solder forms the copper-silver alloy soldering layer (823) between the copper strip (821) and the copper gland (82); The assembly steps include preheating the copper pressure cover (82), covering the upper portion of the aluminum base (81), inserting each copper bar (821) into the circulating water tank (811), and then welding the copper pressure cover (82) to the aluminum base (81) using flux to seal the circulating water tank (811).

6. A dispensing method suitable for various types of workpieces, characterized by: Using the dispensing device according to any one of claims 1 to 5 to dispense glue on a workpiece comprises the following steps: Feeding step, the feeding mechanism (3) includes a feeding drive motor (31), a feeding belt (32), a feeding bracket (33), a feeding active wheel and a feeding passive wheel, the workpiece is transferred to the feeding belt (32) through the feeding mechanism (1), and the control circuit controls the feeding drive motor (31) to completely transfer the workpiece to the feeding belt (32); Positioning and locking step: the control circuit controls the positioning drive mechanism to move downward, so that the positioning bracket (41) abuts against the feeding belt (32), and the workpiece falls into the positioning groove (411), and the positioning block (413) is limitedly engaged with the notch on the workpiece; In a visual recognition step, the control circuit controls the manipulator (5) to move to the top of the feeding mechanism (3) on either side, and the camera (6) photographs the workpiece in a vertical direction to obtain a positioning picture and sends it to the recognition processing circuit. The recognition processing circuit determines the specifications and models of the workpiece based on the positioning picture and analyzes and obtains the coordinate information of the area to be glued; In the dispensing step, the control circuit receives the coordinate information sent by the recognition processing circuit, controls the robot (5) to move, and controls the AB dispensing valve (71) to dispense glue according to a preset glue amount; In the discharge step, the control circuit controls the positioning drive mechanism to move upward, so that the positioning bracket (41) is away from the feeding belt (32), and the control circuit controls the feeding drive motor (31) to transport the workpiece away from the feeding belt (32).

7. The dispensing method for multiple types of workpieces according to claim 6, characterized in that: The visual recognition step also includes a parameter setting step, which includes the following sub-steps: In the photographing sub-step, the workpiece for which data is to be entered is positioned through the feeding mechanism (1) and the feeding mechanism (3), the manipulator (5) is controlled by the control circuit to move to the top of the workpiece, and the camera (6) photographs the workpiece in a vertical direction to obtain a picture to be set. In the marking sub-step, the recognition processing circuit analyzes the workpiece in the picture to be set and marks the workpiece model in the picture to be set, receives the picture to be set sent by the recognition processing circuit through the control interface and manually selects the area to be glued, and the recognition processing circuit receives the picture to be set marked with the area to be glued and marks the coordinate information and workpiece model information of the area to be glued, obtains the marked picture and stores it in the storage unit of the control circuit.

8. The dispensing method for multiple types of workpieces according to claim 7, characterized in that: The storage unit pre-stores a model-coordinate execution relationship table, wherein the model-coordinate execution relationship table is provided with a plurality of groups of model-coordinate parameter instruction sets, each group of model-coordinate parameter instruction sets including a model parameter, one or more dispensing coordinate parameters and a dispensing amount parameter; The control interface is provided with control buttons and / or a touch screen for inputting model parameters, dispensing coordinate parameters and dispensing amount parameters, and the control buttons and touch screen are electrically connected to the control circuit respectively; In the visual recognition step, the recognition processing circuit compares the positioning image with the marking image stored in the storage unit, identifies and analyzes the workpiece model information in the positioning image, and then controls the robot (5) to move to the corresponding dispensing area and controls the AB dispensing valve (71) to extrude the corresponding amount of glue according to the model-coordinate execution relationship table.

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