Dispensing device for SMT (Surface Mount Technology)

Abstract

The utility model discloses a dispensing device for SMT (Surface Mount Technology), which comprises a support frame, a fixing frame and a glue box, the left side and the right side of the inner wall of the fixing frame are fixedly connected with the left side and the right side of the support frame, and the glue box is fixedly arranged at the top of the fixing frame. According to the glue dispensing device, the glue storage tank, the connecting pipe, the glue dispensing head and the movable frame are arranged, the glue storage tank can temporarily store glue, the glue in the glue storage tank can flow into the glue dispensing head through the connecting pipe, and the connecting pipe and the glue dispensing head can be driven to rotate by rotating the movable frame; when an opening of the glue dispensing head faces upwards, glue can be prevented from flowing out to cause waste, and the problems that although a glue tank is communicated with the glue dispensing head through a glue conveying pipe, the device is not provided with a glue breaking structure, glue still drips in the glue dispensing head when glue dispensing is not carried out, waste is caused, and when the glue drips onto a placing table, the glue can not flow out of the glue can be solved. And the problem that a user cannot conveniently place the workpiece is solved, and the effect of conveniently breaking glue is achieved.

Description

Technical Field

[0001] This utility model relates to the field of SMT placement machine technology, specifically to a dispensing device for SMT placement. Background Technology

[0002] A pick-and-place machine is a combination of mechanical, electrical, optical and computer control technologies. Through functions such as pick-up, displacement, positioning and placement, it enables the rapid and accurate placement of SMD components onto the designated pads on the PCB board. In the manufacturing process of electronic products, dispensing is usually required to bond two workpieces together. As the performance of electronic products continues to improve, the requirements for dispensing processes are becoming more and more stringent.

[0003] For example, patent application CN214917680U relates to a dispensing device for an SMT pick-and-place machine, which includes a worktable, a dispensing mechanism connected to the worktable, and a mounting bracket slidably connected to the worktable via a first sliding component. The dispensing mechanism is slidably connected to the mounting bracket via a second sliding component, and the sliding direction of the mounting bracket is perpendicular to the sliding direction of the dispensing mechanism. This application has the effect of improving dispensing efficiency.

[0004] Based on the search of patent numbers and the shortcomings of existing technologies, the following was found:

[0005] Although this type of SMT pick-and-place machine's dispensing device can improve dispensing efficiency, during use, since the glue tank is connected to the dispensing head through the glue delivery tube, and the device does not have a glue-cutting structure, glue will still drip from the dispensing head when dispensing is not in progress, resulting in waste. Furthermore, when glue drips onto the placement table, it is inconvenient for the user to place the workpiece. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a dispensing device for SMT assembly, which has the advantage of convenient glue cutting. It solves the problem that although the glue tank is connected to the dispensing head through the glue delivery tube, the device does not have a glue cutting structure, so glue will still drip from the dispensing head when dispensing is not being performed, resulting in waste. Furthermore, when the glue drips onto the placement table, it is inconvenient for the user to place the workpiece.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dispensing device for SMT assembly, comprising a support frame, a fixing frame, and a glue tank. The left and right sides of the inner wall of the fixing frame are fixedly connected to the left and right sides of the support frame. The glue tank is fixedly installed on the top of the fixing frame. A glue storage tank is provided on the top of the support frame. A connecting pipe is connected to the bottom of the glue storage tank. A dispensing head is fixedly installed at the other end of the connecting pipe. A movable frame is movably connected to the surface of the connecting pipe. A transmission mechanism is provided at the bottom of the fixing frame. A connecting mechanism is connected to the front side of the glue tank.

[0008] In a preferred embodiment of this utility model, the transmission mechanism includes a mounting plate, an electric push rod, a U-shaped frame, and a servo motor. The electric push rod is fixedly mounted on the bottom of the mounting plate, the U-shaped frame is fixedly mounted on the output end of the electric push rod, the servo motor is fixedly mounted on the right side of the U-shaped frame, and the output end of the servo motor is fixedly connected to the right side of the movable frame. The left side of the movable frame is movably connected to the left side of the inner wall of the U-shaped frame via a pivot pin.

[0009] As a preferred embodiment of this utility model, the connecting mechanism includes a dispensing tube, the other end of which is connected to the front side of the surface of the glue storage tank. A guide plate is provided on the top of the front side of the fixing frame, and a through hole is provided on the top of the guide plate. The inner wall of the through hole is movably connected to the surface of the dispensing tube.

[0010] In a preferred embodiment of this utility model, a first motor is fixedly installed on the right side of the fixing frame, a connecting frame is fixedly connected to the rear side of the mounting plate, a lead screw is movably connected to the left side of the inner wall of the fixing frame via a bearing, the other end of the lead screw passes through the connecting frame and is fixedly connected to the output end of the first motor, and the lead screw is threadedly connected to the connecting frame.

[0011] As a preferred embodiment of this utility model, a guide rod is fixedly connected to the front side of the top left side of the inner wall of the fixed frame, and the other end of the guide rod passes through the mounting plate and is fixedly connected to the front side of the top right side of the inner wall of the fixed frame. The guide rod is movably connected to the mounting plate.

[0012] As a preferred embodiment of this utility model, a sliding plate is fixedly connected to the rear side of the guide plate, and a sliding groove is provided on the top of the front side of the fixing frame, with the surface of the sliding plate slidably connected to the inner wall of the sliding groove.

[0013] In a preferred embodiment of this invention, a second motor is fixedly installed on the front side of the left side of the support frame, and a first transmission roller is movably connected to the front side of the right side of the inner wall of the support frame via a shaft pin. The other end of the first transmission roller is fixedly connected to the output end of the second motor. A second transmission roller is movably connected to the rear side of the right side of the inner wall of the support frame via a bearing. The other end of the second transmission roller is movably connected to the rear side of the left side of the inner wall of the support frame via a bearing. The first transmission roller and the second transmission roller are connected by a belt drive.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model, by setting up a glue storage tank, a connecting pipe, a dispensing head, and a movable frame, allows the glue storage tank to temporarily store glue. The glue inside the storage tank can flow to the dispensing head through the connecting pipe. By rotating the movable frame, the connecting pipe and the dispensing head can be rotated. When the opening of the dispensing head faces upward, glue leakage and waste are prevented. This solves the problem that although the glue tank is connected to the dispensing head through the glue delivery pipe, the device does not have a glue-cutting structure, so glue will still drip from the dispensing head when not dispensing, resulting in waste. Furthermore, when glue drips onto the placement table, it is inconvenient for the user to place the workpiece. This invention achieves the effect of convenient glue cutting.

[0016] 2. This utility model, through the setting of a transmission mechanism, allows the mounting plate to fix and limit the electric push rod. By activating the electric push rod, the output end of the electric push rod can drive the U-shaped frame to move downward. The downward movement of the U-shaped frame can drive the glue tank, connecting pipe, and dispensing head to move downward to perform glue dispensing. During the dispensing interval or after dispensing, by activating the servo motor, the output end of the servo motor can drive the movable frame to rotate, which in turn drives the connecting pipe and dispensing head to rotate. When the opening of the dispensing head is facing upward, the connecting pipe can generate resistance to the glue inside, and the generated resistance is greater than the water pressure in the water tank, thereby preventing the glue from flowing out.

[0017] 3. By setting up a connecting mechanism, the glue in the glue tank can flow to the inside of the glue storage tank through the glue dispensing pipe. When the glue storage tank moves left and right, it can drive the glue dispensing pipe to move left and right. At this time, the through hole can be used to guide the glue dispensing pipe with the guide plate, thereby avoiding friction between the glue dispensing pipe and the fixed frame. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the transmission mechanism and the communication mechanism of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the glue storage tank and connecting pipe of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the first and second transmission rollers of this utility model.

[0022] In the diagram: 1. Support frame; 2. Fixed frame; 3. Glue tank; 4. Glue storage tank; 5. Connecting pipe; 6. Dispensing head; 7. Movable frame; 8. Transmission mechanism; 81. Mounting plate; 82. Electric push rod; 83. U-shaped frame; 84. Servo motor; 9. Connecting mechanism; 91. Glue dispensing pipe; 92. Guide plate; 93. Through hole; 10. First motor; 11. Connecting frame; 12. Lead screw; 13. Guide rod; 14. Slide plate; 15. Slide groove; 16. Second motor; 17. First transmission roller; 18. Second transmission roller. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1 to 4 As shown, the present invention provides a dispensing device for SMT assembly, including a support frame 1, a fixing frame 2, and a glue tank 3. The left and right sides of the inner wall of the fixing frame 2 are fixedly connected to the left and right sides of the support frame 1. The glue tank 3 is fixedly installed on the top of the fixing frame 2. A glue storage tank 4 is provided on the top of the support frame 1. A connecting pipe 5 is connected to the bottom of the glue storage tank 4. A dispensing head 6 is fixedly installed on the other end of the connecting pipe 5. A movable frame 7 is movably connected to the surface of the connecting pipe 5. A transmission mechanism 8 is provided at the bottom of the fixing frame 2. A connecting mechanism 9 is connected to the front side of the glue tank 3.

[0025] refer to Figure 2 The transmission mechanism 8 includes a mounting plate 81, an electric push rod 82, a U-shaped frame 83, and a servo motor 84. The electric push rod 82 is fixedly installed at the bottom of the mounting plate 81, the U-shaped frame 83 is fixedly installed at the output end of the electric push rod 82, and the servo motor 84 is fixedly installed on the right side of the U-shaped frame 83. The output end of the servo motor 84 is fixedly connected to the right side of the movable frame 7, and the left side of the movable frame 7 is movably connected to the left side of the inner wall of the U-shaped frame 83 through a shaft pin.

[0026] As a technical optimization of this utility model, by setting a transmission mechanism 8, the mounting plate 81 can fix and limit the electric push rod 82. By starting the electric push rod 82, the output end of the electric push rod 82 can drive the U-shaped frame 83 to move downward. The downward movement of the U-shaped frame 83 can drive the glue storage tank 4, the connecting pipe 5 and the dispensing head 6 to move downward to perform glue dispensing work. During the glue dispensing interval or after glue dispensing is completed, by starting the servo motor 84, the output end of the servo motor 84 can drive the movable frame 7 to rotate, which can drive the connecting pipe 5 and the dispensing head 6 to rotate. When the opening of the dispensing head 6 is facing upward, the connecting pipe 5 can generate resistance to the glue inside, and the generated resistance is greater than the water pressure in the water tank, thereby preventing the glue from flowing out.

[0027] refer to Figure 2 The connecting mechanism 9 includes a dispensing tube 91, the other end of which is connected to the front side of the surface of the glue storage tank 4. A guide plate 92 is provided on the top of the front side of the fixing frame 2. A through hole 93 is provided on the top of the guide plate 92. The inner wall of the through hole 93 is movably connected to the surface of the dispensing tube 91.

[0028] As a technical optimization of this utility model, by setting the connecting mechanism 9, the glue in the glue tank 3 can flow to the inside of the glue storage tank 4 through the glue dispensing pipe 91. When the glue storage tank 4 moves left and right, it can drive the glue dispensing pipe 91 to move left and right. At this time, the through hole 93 can be used to guide the glue dispensing pipe 91 with the guide plate 92, thereby avoiding friction between the glue dispensing pipe 91 and the fixing frame 2.

[0029] refer to Figure 2 and Figure 3 The first motor 10 is fixedly installed on the right side of the fixed frame 2, and the connecting frame 11 is fixedly connected to the rear side of the mounting plate 81. The lead screw 12 is movably connected to the left side of the inner wall of the fixed frame 2 through the bearing. The other end of the lead screw 12 passes through the connecting frame 11 and is fixedly connected to the output end of the first motor 10. The lead screw 12 is threadedly connected to the connecting frame 11.

[0030] As a technical optimization of this utility model, by setting a first motor 10, a connecting frame 11 and a lead screw 12, starting the first motor 10 can cause the output end of the first motor 10 to drive the lead screw 12 to rotate. The rotation of the lead screw 12 can drive the connecting frame 11 to move left and right. The left and right movement of the connecting frame 11 can drive the mounting plate 81 to move left and right, thereby driving the dispensing head 6 to move left and right to dispense glue to workpieces at different positions.

[0031] refer to Figure 2 A guide rod 13 is fixedly connected to the front side of the top left side of the inner wall of the fixed frame 2. The other end of the guide rod 13 passes through the mounting plate 81 and is fixedly connected to the front side of the top right side of the inner wall of the fixed frame 2. The guide rod 13 is movably connected to the mounting plate 81.

[0032] As a technical optimization of this utility model, by setting a guide rod 13, the left and right movement of the connecting frame 11 can drive the mounting plate 81 to slide left and right on the surface of the guide rod 13. At this time, the guide rod 13 can limit the movement of the mounting plate 81 and the connecting frame 11, thereby improving the stability of the movement of the mounting plate 81.

[0033] refer to Figure 2 A slide plate 14 is fixedly connected to the rear side of the guide plate 92, and a groove 15 is provided on the top of the front side of the fixing frame 2. The surface of the slide plate 14 is slidably connected to the inner wall of the groove 15.

[0034] As a technical optimization of this utility model, by setting up a sliding plate 14 and a sliding groove 15, the left and right movement of the guide plate 92 can drive the sliding plate 14 to slide left and right inside the sliding groove 15. The sliding groove 15 can limit the sliding plate 14 and the guide plate 92 in front, back, up and down, thereby improving the stability of the left and right movement of the guide plate 92.

[0035] refer to Figure 4 A second motor 16 is fixedly installed on the front side of the left side of the support frame 1. A first transmission roller 17 is movably connected to the front side of the right side of the inner wall of the support frame 1 via a shaft pin. The other end of the first transmission roller 17 is fixedly connected to the output end of the second motor 16. A second transmission roller 18 is movably connected to the rear side of the right side of the inner wall of the support frame 1 via a bearing. The other end of the second transmission roller 18 is movably connected to the rear side of the left side of the inner wall of the support frame 1 via a bearing. The first transmission roller 17 and the second transmission roller 18 are connected by belt drive.

[0036] As a technical optimization of this utility model, by setting a second motor 16, a first transmission roller 17 and a second transmission roller 18, starting the second motor 16 can drive the first transmission roller 17 to rotate. The rotation of the first transmission roller 17 can drive the belt and the second transmission roller 18 to rotate. Several placement racks are fixed on the top of the belt surface, and the user can place the workpiece inside them to avoid movement when the belt is conveying it.

[0037] The working principle and usage process of this utility model are as follows: In use, the workpiece is first placed in the top rack of the belt. Then, the second motor 16 is started, causing its output to drive the first transmission roller 17 to rotate. The rotation of the first transmission roller 17 drives the belt and the second transmission roller 18 to rotate, thereby conveying the workpiece to the bottom of the dispensing head 6. The glue inside the glue tank 3 flows sequentially through the glue outlet pipe 91, the glue storage tank 4, and the connecting pipe 5 to the dispensing head 6 to dispense the workpiece. Starting the first motor 10 causes its output to drive the lead screw 12 to rotate. The rotation of the lead screw 12 can drive the connecting frame 11 to move left and right. The left and right movement of the connecting frame 11 can drive the mounting plate 81 to move left and right, thereby driving the dispensing head 6 to move left and right to dispense glue to the workpiece at different positions. During the dispensing interval or after dispensing, the output end of the servo motor 84 is started to drive the movable frame 7 to rotate, which in turn drives the connecting pipe 5 and the dispensing head 6 to rotate. When the opening of the dispensing head 6 is facing upward, the connecting pipe 5 can generate resistance to the glue inside, and the generated resistance is greater than the water pressure in the water tank, thereby preventing glue from flowing out and being wasted.

[0038] In summary, this SMT dispensing device, by comprising a glue storage tank 4, a connecting pipe 5, a dispensing head 6, and a movable frame 7, allows the glue storage tank 4 to temporarily store the glue. The glue inside the storage tank 4 flows to the dispensing head 6 through the connecting pipe 5. Rotating the movable frame 7 causes the connecting pipe 5 and the dispensing head 6 to rotate. When the opening of the dispensing head 6 faces upward, glue leakage and waste are prevented. This solves the problem that although the glue tank is connected to the dispensing head through the glue delivery pipe, the device lacks a glue-cutting structure, resulting in glue dripping from the dispensing head even when not dispensing, causing waste. Furthermore, when glue drips onto the placement table, it is inconvenient for the user to place the workpiece.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dispensing device for SMT assembly, comprising a support frame (1), a fixing frame (2), and a glue tank (3), characterized in that: The left and right sides of the inner wall of the fixed frame (2) are fixedly connected to the left and right sides of the support frame (1). The glue tank (3) is fixedly installed on the top of the fixed frame (2). The top of the support frame (1) is provided with a glue storage tank (4). The bottom of the glue storage tank (4) is connected to a connecting pipe (5). The other end of the connecting pipe (5) is fixedly installed with a glue dot (6). The surface of the connecting pipe (5) is movably connected to a movable frame (7). The bottom of the fixed frame (2) is provided with a transmission mechanism (8). The front side of the glue tank (3) is connected to a connecting mechanism (9).

2. The dispensing device for SMT assembly according to claim 1, characterized in that: The transmission mechanism (8) includes a mounting plate (81), an electric push rod (82), a U-shaped frame (83), and a servo motor (84). The electric push rod (82) is fixedly installed at the bottom of the mounting plate (81). The U-shaped frame (83) is fixedly installed at the output end of the electric push rod (82). The servo motor (84) is fixedly installed on the right side of the U-shaped frame (83). The output end of the servo motor (84) is fixedly connected to the right side of the movable frame (7). The left side of the movable frame (7) is movably connected to the left side of the inner wall of the U-shaped frame (83) through a shaft pin.

3. The dispensing device for SMT assembly according to claim 1, characterized in that: The connecting mechanism (9) includes a glue outlet pipe (91), the other end of which is connected to the front side of the glue storage tank (4). A guide plate (92) is provided on the top of the front side of the fixing frame (2). A through hole (93) is provided on the top of the guide plate (92). The inner wall of the through hole (93) is movably connected to the surface of the glue outlet pipe (91).

4. The dispensing device for SMT assembly according to claim 2, characterized in that: The first motor (10) is fixedly installed on the right side of the fixed frame (2), and the connecting frame (11) is fixedly connected to the rear side of the mounting plate (81). The lead screw (12) is movably connected to the left side of the inner wall of the fixed frame (2) through the bearing. The other end of the lead screw (12) passes through the connecting frame (11) and is fixedly connected to the output end of the first motor (10). The lead screw (12) is threadedly connected to the connecting frame (11).

5. The dispensing device for SMT assembly according to claim 2, characterized in that: A guide rod (13) is fixedly connected to the front side of the top left side of the inner wall of the fixed frame (2). The other end of the guide rod (13) passes through the mounting plate (81) and is fixedly connected to the front side of the top right side of the inner wall of the fixed frame (2). The guide rod (13) is movably connected to the mounting plate (81).

6. The dispensing device for SMT assembly according to claim 3, characterized in that: The guide plate (92) is fixedly connected to the rear side of the slide plate (14), and the top of the front side of the fixing frame (2) is provided with a slide groove (15). The surface of the slide plate (14) is slidably connected to the inner wall of the slide groove (15).

7. The dispensing device for SMT assembly according to claim 1, characterized in that: A second motor (16) is fixedly installed on the front side of the left side of the support frame (1). A first transmission roller (17) is movably connected to the front side of the right side of the inner wall of the support frame (1) via a shaft pin. The other end of the first transmission roller (17) is fixedly connected to the output end of the second motor (16). A second transmission roller (18) is movably connected to the rear side of the right side of the inner wall of the support frame (1) via a bearing. The other end of the second transmission roller (18) is movably connected to the rear side of the left side of the inner wall of the support frame (1) via a bearing. The first transmission roller (17) and the second transmission roller (18) are connected by belt drive.

Images