High-precision double-station high-speed dispensing machine

Abstract

The utility model discloses a high-precision double-station high-speed dispensing machine, which comprises a platform, a support frame, two three-axis translation driving mechanisms, a dispensing head, a clamp and a transportation device, the support frame is arranged on the platform, the support frame comprises a plurality of square tubes, and concrete is injected into the square tubes; two dispensing stations are arranged on the platform in an arrayed mode, and the conveying device is arranged on the platform and extends in the arrangement direction of the dispensing stations so as to convey the clamps to the dispensing stations respectively. The two three-axis translation driving mechanisms are arranged on the supporting frame and located above the two dispensing stations in a one-to-one correspondence mode. And the glue dispensing head is arranged at the output end of the three-axis translation driving mechanism so as to dispense glue on the workpiece of the clamp on the station. The high-precision double-station high-speed dispensing machine has the advantages of high stability, high precision and high production efficiency.

Description

Technical Field

[0001] The utility model relates to a glue dispensing machine, in particular to a high-precision double-station high-speed glue dispensing machine with high stability, high precision and high production efficiency. Background Art

[0002] Glue dispensing is a process that applies glue to PCBs based on their varying properties. This process improves the PCB's mechanical strength, waterproofing, stain resistance, and insulation, while also enhancing its heat and chemical resistance. These advantages ensure the quality and stability of electronic products, extending their lifespan. Glue dispensing has become a crucial process in electronic devices that cannot be ignored.

[0003] Glue dispensing is generally done manually or with a dispensing machine. Traditional dispensing machines have a frame structure made of square tube welding, with the X, Y, and Z axis movements driven by a screw-motor module. A single valve is installed on the Z axis for dispensing. However, existing dispensing machines have the following shortcomings: 1. The traditional frame is made of hollow square tube welding, which is insufficiently strong and has poor overall stability. Metal fatigue can occur over time, and high-speed operation is prone to vibration, which in turn affects the positional accuracy of the dispensing head, thereby reducing dispensing accuracy. 2. The screw-motor module drive has average dispensing accuracy and speed, which cannot meet the high-demand dispensing process requirements. 3. Each device uses a single X, Y, and Z axis screw module for operation, which is slow, and production capacity cannot keep up with demand, resulting in low production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a high-precision double-station high-speed dispensing machine with high stability, high precision and high production efficiency.

[0005] In order to achieve the above-mentioned purpose, the high-precision double-station high-speed dispensing machine provided by the utility model includes a platform, a support frame, two three-axis translation drive mechanisms, two dispensing heads, a fixture and a transportation device, wherein the support frame is arranged on the platform, and the support frame includes multiple square tubes, and the square tubes are filled with concrete; two dispensing stations are arranged in an array on the platform, and the transportation device is arranged on the platform and extends along the arrangement direction of the dispensing stations to transport the fixture to each of the dispensing stations respectively; the two three-axis translation drive mechanisms are arranged on the support frame and are respectively located above the two dispensing stations in a one-to-one correspondence; the dispensing head is arranged at the output end of the three-axis translation drive mechanism to dispense glue to the workpiece of the fixture located at the station.

[0006] Compared to the prior art, the present invention improves the overall strength and rigidity of the support frame by placing concrete within the square tube of the support frame. This effectively supports the three-axis translation drive mechanism and the dispensing head, preventing vibration and improving overall stability and the movement accuracy of the dispensing head driven by the three-axis translation drive mechanism, thereby ensuring the accuracy of dispensing. Furthermore, by providing dual dispensing stations on the support frame, two three-axis translation drive mechanisms can drive the dispensing points separately, simultaneously dispensing workpieces on different fixtures, thereby increasing production speed and significantly improving production efficiency.

[0007] Preferably, the high-precision, dual-station, high-speed dispensing machine further includes an automatic width adjustment mechanism, which is disposed on the platform, and the transport device is disposed on the automatic width adjustment mechanism. The automatic width adjustment mechanism adjusts the width of the transport device to accommodate fixtures of varying widths. By freely adjusting the width of the transport device with the automatic width adjustment mechanism, the dispensing machine can be adapted to accommodate fixtures of varying widths, thereby improving the dispensing machine's applicability, increasing equipment utilization, and effectively reducing equipment costs.

[0008] Preferably, the automatic width adjustment mechanism includes a frame, an adjustment drive mechanism, a fixed track, and a movable track. The transport device includes a first conveyor belt and a second conveyor belt. The frame is mounted on the platform, and the fixed track is fixed to the frame. The adjustment drive mechanism is mounted on the frame, and its output end is connected to the movable track to drive the movable track toward or away from the fixed track. The first conveyor belt is mounted on the fixed track, and the second conveyor belt is mounted on the movable track. The fixture is supported on both the first and second conveyor belts. The position of the movable track can be adjusted by the adjustment drive mechanism, so that the spacing between the movable track and the fixed track can be quickly and conveniently adjusted, thereby adjusting the width of the transport device to accommodate fixtures of different widths.

[0009] Preferably, the adjustment drive mechanism includes a motor, a driving pulley, a driven pulley, a belt, two screws, and two sliders. The screws are pivotally connected to the two ends of the frame and the central axis is arranged perpendicular to the transportation direction of the clamp. The slider is slidably arranged on the frame and threadedly connected to the screws. The slider is connected to the movable rail, and the driven pulleys are respectively arranged at one end of each screw. The motor is arranged on the frame and the output end is provided with the driving pulley, and the belt is wound between the driving pulley and the driven pulley. By using a motor to simultaneously drive the opposite ends of the movable rail, the movable rail can be moved synchronously as a whole, thereby ensuring that the movable rail is parallel to the fixed rail, thereby ensuring the smooth operation of the clamp.

[0010] Preferably, the transport device includes an upper transport track and a lower transport track arranged in upper and lower layers. The upper transport track transports the fixtures loaded with workpieces to the respective dispensing stations, while the lower transport track transports the fixtures without workpieces in the opposite direction. The upper and lower transport tracks allow the fixtures to be transported in a circular manner, thereby improving both fixture utilization and production efficiency.

[0011] Preferably, the transport device is provided with a first positioning device corresponding to each of the dispensing stations, and the first positioning device positions the fixture so that the fixture stays at the dispensing station. This can improve the positioning accuracy of the fixture at the dispensing station, thereby improving the accuracy of dispensing.

[0012] Preferably, the transport device is provided with a buffer station before the first dispensing station along the transport direction. Since the transport device is long, the transport time to the dispensing station is long. By providing the buffer station, the fixture can be pre-delivered to the buffer station near the dispensing station, thereby reducing the time for fixture loading and improving dispensing efficiency.

[0013] Specifically, the buffer station is equipped with a second positioning device, which positions the fixtures so that they can quickly enter the dispensing station. This not only prevents other fixtures from entering the dispensing station during dispensing, but also improves the positioning accuracy of the fixtures, thereby improving the accuracy of fixture transportation.

[0014] Preferably, the three-axis translation drive mechanism includes an X-axis drive component, a Y-axis drive component and a Z-axis drive component, the output end of the X-axis drive component is connected to the Y-axis drive component, the Y-axis drive component is connected to the Z-axis drive component, and the output end of the Z-axis drive component is connected to the dispensing head.

[0015] Preferably, the X-axis drive assembly, the Y-axis drive assembly, and the Z-axis drive assembly all use motors driving screw nuts, and the motors are linear motors. Using linear motors can enable the dispensing machine to have high acceleration and low frequency inching operation capabilities, thereby effectively improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model high-precision double-station high-speed dispensing machine.

[0017] Figure 2 It is a three-dimensional diagram of the automatic width adjustment mechanism of the utility model high-precision double-station high-speed dispensing machine.

[0018] Figure 3It is a top view of the automatic width adjustment mechanism of the high-precision double-station high-speed dispensing machine of the utility model.

[0019] Figure 4 It is a side view of the automatic width adjustment mechanism of the utility model high-precision double-station high-speed dispensing machine. DETAILED DESCRIPTION

[0020] In order to explain the technical content, structural features and effects achieved by the present invention in detail, the following is a detailed description in conjunction with the embodiments and the accompanying drawings.

[0021] like Figures 1 to 3 As shown, the high-precision dual-station high-speed dispensing machine 100 of the present invention includes a platform 1, a support frame 2, two three-axis translation drive mechanisms 3, two dispensing heads 4, a fixture 5, and a transport device 6. The lower side of the platform 1 has a cabinet for accommodating a control system for controlling various mechanisms and devices. The support frame 2 is arranged on the upper side of the platform 1. The support frame 2 is a gantry structure, which includes multiple square tubes filled with concrete. Two dispensing stations 101 are arranged on the platform 1 along the transport direction. The transport device 6 is arranged on the platform 1 and extends along the arrangement direction of the dispensing stations 101 and passes through the two dispensing stations 101 to transport the fixture 5 to each of the dispensing stations 101. The two three-axis translation drive mechanisms 3 are arranged on the support frame 2 and are respectively located above the two dispensing stations 101; the dispensing heads 4 are respectively arranged at the output ends of each of the three-axis translation drive mechanisms 3 to dispense glue to the workpiece of the fixture 5 located on the dispensing station 101.

[0022] See also Figures 2 to 4The high-precision double-station high-speed dispensing machine 100 also includes an automatic width-adjusting mechanism 7, which is arranged on the platform 1. The transport device 6 is arranged on the automatic width-adjusting mechanism 7. The automatic width-adjusting mechanism 7 adjusts the width of the transport device 6 to carry fixtures 5 of different widths. By setting the automatic width-adjusting mechanism 7 to freely adjust the width of the transport device 6, the dispensing machine can be adapted to fixtures 5 of different widths, thereby improving the applicability of the dispensing machine, improving the utilization rate of the equipment, and effectively reducing the cost of the equipment. Specifically, the automatic width-adjusting mechanism 7 includes a frame 71, an adjustment drive mechanism 72, a fixed rail 73, and a movable rail 74. The transport device 6 includes a first conveyor belt 61 and a second conveyor belt 62. The frame 71 is arranged on the platform 1, the fixed rail 73 is fixed on the frame 71, and the movable rail 74 is movably arranged on the frame 71 and its moving direction is perpendicular to the transport direction of the transport device 6. The adjustment drive mechanism 72 is arranged on the frame 71 and its output end is connected to the movable rail 74 to drive the movable rail 74 to move closer to or away from the fixed rail 73; the first conveyor belt 61 is arranged on the fixed rail 73, and the second conveyor belt 62 is arranged on the movable rail 74. The clamp 5 is carried on the first conveyor belt 61 and the second conveyor belt 62 at the same time. The structures of the first conveyor belt 61 and the second conveyor belt 62 are the same, both including a conveyor belt, a pulley set and a motor. The pulley and the conveyor belt are driven by the motor so that the clamp 5 carried on the upper side of the conveyor belt can move synchronously with the belt. The position of the movable rail 74 is adjusted by the adjustment drive mechanism 72, so that the distance between the movable rail 74 and the fixed rail 73 can be quickly and conveniently adjusted, thereby achieving the adjustment of the width of the transport device 6 to adapt to clamps 5 of different widths.

[0023] Please refer to Figures 2 to 4In addition, the adjustment drive mechanism 72 includes a servo motor 721, a driving pulley 722, a driven pulley 723, a belt 724, two screw rods 725 and two sliders 726. The screw rods 725 are respectively pivoted to the two ends of the frame 71 and the central axis is arranged perpendicular to the transportation direction of the clamp 5. The slider 726 is slidably arranged on the frame 71 and is threadedly connected to the screw rod 725; the slider 726 is connected to the movable rail 74, and the driven pulley 723 is respectively arranged at one end of each of the screw rods 725. The servo motor 721 is arranged on the frame 71 and the output end is provided with the driving pulley 722. The belt 724 is wound between the driving pulley 722 and the driven pulley 723. By using a servo motor 721 to simultaneously drive the two opposite ends of the movable rail 74, the movable rail 74 as a whole can be moved synchronously, thereby ensuring that the movable rail 74 is parallel to the fixed rail 73, thereby ensuring the smooth operation of the clamp 5.

[0024] For example Figures 2 to 4 As shown, the transport device 6 includes an upper transport track 6a and a lower transport track 6b arranged in upper and lower layers. The upper transport track 6a transports the fixture 5 loaded with workpieces to each of the dispensing stations 101, and the lower transport track reversely outputs the fixture 5 without workpieces. The upper transport track and the lower transport track are both provided with a first conveyor belt 61 and a second conveyor belt 62. The upper and lower transport tracks 6b can be used to transport the fixture 5 in a circular manner, which can not only improve the utilization rate of the fixture 5, but also improve production efficiency. The transport device 6 is provided with a set of first positioning devices 8 and a first limiting device 9 corresponding to each of the dispensing stations 101. The two first positioning devices 8 are respectively provided on the outside of the fixed track 73 and the movable track 74. The first limiting device 9 is provided on the rear side of each of the dispensing stations 101 and is located below the transport device 6. When the fixture 5 is positioned on the dispensing station 101, the output end of the first limiting device 9 extends upward to block the fixture 5, while the two first positioning devices 8 on the dispensing station 101 clamp and position the fixture 5 on both sides, ensuring that the fixture 5 remains on the dispensing station 101. The first limiting device 9 and the first positioning device are pneumatic cylinders. By installing the cylinders on both sides of the fixture 5, the extended output ends of the cylinders can be inserted into the positioning holes of the fixture 5, thereby achieving rapid positioning. This improves the positioning accuracy of the fixture 5 on the dispensing station 101, thereby improving the precision of dispensing.

[0025] See also Figures 2 to 4, the transport device 6 is provided with a cache station 102 before the first dispensing station 101 along the transport direction. Since the length of the transport device 6 is long, the transport time from the start to the dispensing station 101 is long. By setting the cache station 102, the fixture 5 can be sent to the cache station 102 near the dispensing station 101 in advance, thereby reducing the time for placing the fixture 5 and improving the dispensing efficiency. Specifically, a set of second positioning devices 10 and a second limiting device 110 are provided on the cache station 102. The second positioning device 10 positions the fixture 5 so that the fixture 5 can quickly enter the dispensing station 101 respectively. The second limiting device 110 is arranged behind the cache station 102 along the transport direction and is located below the transport device 6 to block the fixture 5 on the cache station 102. Specifically, the two second positioning devices 10 are respectively arranged on the outside of the fixed rail 73 and the movable rail 74. When the clamp 5 is located on the buffer station 102, the output end of the second limiting device 110 extends upward to block the clamp 5. The two second positioning devices 10 at this location position the two sides of the clamp 5 so that the clamp 5 stays on the dispensing station 101. In this embodiment, the second limiting device 110 and the second fixing device are cylinders. By arranging the cylinders on both sides of the clamp 5, the output ends of the cylinders can be inserted into the positioning holes of the clamp 5 when extended, thereby achieving rapid positioning. This not only prevents other clamps 5 from entering the dispensing position during dispensing, but also improves the positioning accuracy of the clamp 5, thereby improving the accuracy of the conveying of the clamp 5.

[0026] See also Figure 1 The three-axis translation drive mechanism 3 includes an X-drive assembly 31, a Y-drive assembly 32, and a Z-drive assembly 33. The output of the X-drive assembly 31 is connected to the Y-drive assembly 32, which in turn is connected to the Z-drive assembly 33. The output of the Z-drive assembly 33 is connected to the dispensing head 4. Each of the X-drive assembly 31, Y-drive assembly 32, and Z-drive assembly 33 utilizes a linear motor driving a lead screw nut. Using a linear motor enables the dispensing machine to operate with high acceleration and low frequency inching, thereby effectively improving production efficiency.

[0027] In summary, and in combination with the accompanying drawings, the working principle of the high-precision double-station high-speed dispensing machine 100 of the present invention is described in detail below:

[0028] First, the upper transport track 6a of the transport device 6 transports the fixture 5 to the dispensing station 101 along the transport direction. At this time, the first limiting device 9 behind the dispensing station 101 limits the fixture 5 so that the fixture 5 stays on the dispensing station 101. At this time, the output end of the first positioning device 8 extends and plugs into the positioning hole of the fixture 5 to position the fixture 5. After each dispensing station 101 has a fixture 5, the output end of the second limiting device 110 located behind the buffer station extends upward and limits the fixture 5. At the same time, the output end of the second positioning device 10 extends and plugs into the positioning hole of the fixture 5 to position the fixture 5. Afterwards, the three-axis translation drive mechanism 3 located on each dispensing station 101 drives the dispensing head 4 to move to the surface of the workpiece on the dispensing station 101 for dispensing. When the workpieces at the two gluing stations are glued, the output ends of the first limiting device 9, the first positioning device 8, the second limiting device 110, and the second positioning device 10 are retracted to release their respective clamps 5. The transport device 6 can then drive the clamps 5 to move again. The clamp 5 at the gluing station 101 is moved out of the gluing station 101, while the clamp 5 at the buffer station 102 is moved to the gluing station 101. After the workpieces are unloaded, the removed clamps 5 can be transferred to the lower transport track 6b manually or by a transfer device. The lower transport track transports the empty clamps 5 to their original positions, thus completing the cycle.

[0029] Compared to the prior art, the present invention improves the overall strength and rigidity of the support frame 2 by placing concrete within the square tube of the support frame 2. This effectively supports the three-axis translation drive mechanism 3 and the dispensing head 4, preventing vibration and improving overall stability and the movement accuracy of the dispensing head 4 driven by the three-axis translation drive mechanism 3, thereby ensuring the accuracy of dispensing. Furthermore, by providing dual dispensing stations 101 within the support frame 2, two three-axis translation drive mechanisms 3 can drive the dispensing points simultaneously to dispense glue to workpieces on different fixtures 5, thereby increasing production speed and significantly improving production efficiency.

[0030] The structure of the dispensing head 4 involved in the high-precision double-station high-speed dispensing machine 100 of the present invention is well known to ordinary technicians in this field and will not be described in detail here.

[0031] The above disclosure is only a preferred embodiment of the present invention and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A high-precision, double-station, high-speed dispensing machine, characterized by: It includes a platform, a support frame, two three-axis translation drive mechanisms, two dispensing heads, a fixture and a transportation device. The support frame is arranged on the platform, and the support frame includes multiple square tubes, and the square tubes are filled with concrete; two dispensing stations are arranged in an array on the platform, and the transportation device is arranged on the platform and extends along the arrangement direction of the dispensing stations to transport the fixture to each of the dispensing stations respectively; the two three-axis translation drive mechanisms are arranged on the support frame and are respectively located above the two dispensing stations in a one-to-one correspondence; the dispensing head is arranged at the output end of the three-axis translation drive mechanism to dispense glue to the workpiece of the fixture located at the station.

2. The high-precision, double-station, high-speed dispensing machine according to claim 1, characterized in that: The high-precision double-station high-speed dispensing machine also includes an automatic width adjustment mechanism, which is arranged on the platform. The transport device is arranged on the automatic width adjustment mechanism. The automatic width adjustment mechanism adjusts the width of the transport device to carry fixtures of different widths.

3. The high-precision, double-station, high-speed dispensing machine according to claim 2, characterized in that: The automatic width adjustment mechanism includes a frame, an adjustment drive mechanism, a fixed track and a movable track. The transport device includes a first conveyor belt and a second conveyor belt. The frame is arranged on the platform, and the fixed track is fixed on the frame. The adjustment drive mechanism is arranged on the frame and the output end is connected to the movable track to drive the movable track closer to or away from the fixed track; the first conveyor belt is arranged on the fixed track, and the second conveyor belt is arranged on the movable track, and the clamp is carried on the first conveyor belt and the second conveyor belt at the same time.

4. The high-precision double-station high-speed dispensing machine according to claim 3, characterized in that: The adjusting drive mechanism includes a motor, a driving pulley, a driven pulley, a belt, two screw rods and two sliders. The screw rods are pivotally connected to the two ends of the frame and the central axis is arranged perpendicular to the transportation direction of the clamp. The slider is slidably arranged on the frame and is threadedly connected to the screw rod; the slider is connected to the movable track, and the driven pulleys are respectively arranged at one end of each of the screw rods. The motor is arranged on the frame and the driving pulley is provided at the output end. The belt is wound between the driving pulley and the driven pulley.

5. The high-precision, double-station, high-speed dispensing machine according to claim 1, characterized in that: The transport device includes an upper transport track and a lower transport track arranged in upper and lower layers. The upper transport track transports the fixture carrying the workpiece to each of the dispensing stations, and the lower transport track outputs the fixture without the workpiece in the reverse direction.

6. The high-precision, double-station, high-speed dispensing machine according to claim 1, characterized in that: The transport device is provided with a first positioning device corresponding to each of the dispensing stations, and the first positioning device positions the clamp so that the clamp stays on the dispensing station.

7. The high-precision, double-station, high-speed dispensing machine according to claim 1, characterized in that: The transport device is provided with a buffer station before the first dispensing station along the transport direction.

8. The high-precision, double-station, high-speed dispensing machine according to claim 7, characterized in that: The buffer station is provided with a second positioning device, which positions the clamps so that the clamps can quickly enter the dispensing stations respectively.

9. The high-precision, double-station, high-speed dispensing machine according to claim 1, characterized in that: The three-axis translation drive mechanism includes an X-axis drive component, a Y-axis drive component and a Z-axis drive component. The output end of the X-axis drive component is connected to the Y-axis drive component, the Y-axis drive component is connected to the Z-axis drive component, and the output end of the Z-axis drive component is connected to the dispensing head.

10. The high-precision double-station high-speed dispensing machine according to claim 9, characterized in that: The X-axis drive assembly, the Y-axis drive assembly and the Z-axis drive assembly all adopt the form of a motor-driven screw nut, and the motor is a linear motor.

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