Smt patch material accurate positioning rack

Abstract

The utility model relates to SMT paster equipment technical field, concretely is a kind of SMT paster material accurate positioning rack, including support frame, the support frame is rectangular distribution, the inner wall of both ends of support frame is equipped with locating baffle, the both ends of support frame are equipped with a group of roller shaft support frame, each group of roller shaft support frame is equipped with support roller shaft, the side of one group of roller shaft support frame is equipped with electrical cabinet, motor drive support roller shaft rotation is equipped in the electrical cabinet. When using, circuit board material board is conveyed by setting transmission belt, and circuit board advances by the travel switch of transmission belt top, and circuit board material board is contacted with the material guide piece of both sides in advancing process, to guide position, until circuit board material board and locating baffle resist and trigger touch button after shutdown, realize the positioning of circuit board position, accurate positioning is realized to circuit board material by simple structure and simple operation logic.

Description

Technical Field

[0001] This utility model relates to the field of SMT placement equipment technology, and in particular to a precise positioning rack for SMT placement materials. Background Technology

[0002] SMT (Surface Mount Technology) is a core technology in the electronics manufacturing industry. It enables the precise soldering of components to circuit boards through surface mounting technology and is used in the miniaturization of devices such as smartphones and computers.

[0003] In the SMT (Surface Mount Technology) assembly process, to improve product quality, it is often carried out in a relatively sealed environment, and robots are frequently used for material loading, assembly, and soldering. During this process, various materials need to be positioned so that components can be accurately soldered to their designated locations on the circuit board in the final soldering stage. Among the positioning steps described above, the positioning of the circuit board is particularly crucial; if the circuit board shifts during loading, all subsequent soldering processes will be affected by deviations.

[0004] Existing technologies mostly use vision devices and laser devices to locate circuit boards. These require a variety of auxiliary devices to achieve basic positioning functions. Furthermore, vision devices are easily affected by light, leading to visual errors, while laser devices are also susceptible to external interference and require complex data logic to analyze the collected information. Therefore, these devices require frequent maintenance and are relatively troublesome and complicated to use.

[0005] To address this, this application proposes a precision positioning rack for SMT components to improve the ease of positioning circuit board components. Utility Model Content

[0006] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a precise positioning rack for SMT components, which solves the problem of complex positioning equipment in the prior art.

[0007] To achieve the above and other related objectives, this utility model provides a precision positioning rack for SMT components, including a support frame. The support frame is rectangular in shape, and positioning baffles are provided on the inner walls at both ends of the support frame. A set of roller support frames is provided at both ends of the support frame, and a support roller is provided between each set of roller support frames. An electrical box is provided on the side of one set of roller support frames, and a motor is provided in the electrical box to drive the support roller to rotate. The two support rollers are supported by a transmission belt, and two detachable material guides are provided between the two positioning baffles, with the distance between the two material guides linearly narrowing.

[0008] Preferably, the top of the transmission belt is in contact with the bottom of the positioning baffle.

[0009] Preferably, a limit switch is provided on the axis at the top of the transmission belt, and the limit switch is connected to the electrical box through the track groove.

[0010] Preferably, the limit switch has a trigger button on both sides.

[0011] Preferably, the opposing surfaces of the two material guides are provided with correction guide plates, and the correction guide plates are inclined surfaces; Both ends of the material guide are provided with fixing pins, and the fixing pins are connected to the positioning baffle by bolts.

[0012] Preferably, the bottom of the material guide overlaps with the top of the transmission belt, and the top of the material guide is not lower than the top of the positioning baffle.

[0013] Preferably, the inner wall of the transmission belt is provided with anti-slip teeth, and the outer surface of the support roller shaft is provided with driving teeth, wherein the anti-slip teeth and the driving teeth mesh.

[0014] Preferably, the length of the support roller shaft is greater than the width of the transmission belt, and the length of the drive tooth is equal to the width of the transmission belt.

[0015] As described above, the SMT component precise positioning rack of this utility model has the following beneficial effects: 1. This utility model uses a transmission belt to transport circuit board materials and pushes the circuit board forward by a limit switch at the top of the transmission belt. During the movement of the circuit board materials, they come into contact with the material guides on both sides to guide their position until the circuit board materials come into contact with the positioning baffle and trigger the touch button to stop the machine. This achieves the positioning of the circuit board materials. The simple structure and simple operating logic can achieve accurate positioning of circuit board materials.

[0016] 2. This utility model detachably installs the material guide on the positioning baffle, thereby allowing different models of material guides to be adjusted to match the circuit board material according to the different sizes and shapes of the circuit board material, achieving a convenient and flexible adjustment effect.

[0017] 3. This utility model improves the accuracy of driving the transmission belt by setting anti-slip teeth on the inner wall of the transmission belt and driving teeth on the outer surface of the support roller shaft, so that the anti-slip teeth and driving teeth mesh to transmit power. Furthermore, by setting the length of the support roller shaft to be greater than the width of the transmission belt and making the driving teeth equal to the width of the transmission belt, when the driving teeth and anti-slip teeth mesh, the horizontal position of the transmission belt can be limited by the driving teeth to prevent the transmission belt from deviating during transmission.

[0018] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. Attached Figure Description

[0019] Figure 1 The diagram shown is a structural schematic of this utility model.

[0020] Figure 2 The diagram shown is a top view of the structure of this utility model.

[0021] Figure 3 The diagram shown is a schematic representation of the limit switch of this utility model.

[0022] Figure 4 The diagram shown is a structural schematic of the material guide component of this utility model.

[0023] Figure 5 This utility model is shown. Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0024] Figure 6 The diagram shown is a structural schematic of the support roller shaft of this utility model.

[0025] Component designation explanation: 1. Support frame; 2. Positioning baffle; 3. Roller support frame; 4. Support roller; 41. Drive gear; 5. Electrical box; 6. Transmission belt; 61. Anti-slip teeth; 7. Material guide; 71. Correcting guide plate; 72. Fixing pin; 8. Limit switch; 81. Touch button. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0027] Please see Figures 1 to 6 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0028] like Figures 1-3 As shown, this utility model provides a precise positioning rack for SMT components, including a support frame 1, which is rectangular in shape. Positioning baffles 2 are provided on the inner walls of both ends of the support frame 1. A set of roller support frames 3 is provided at both ends of the support frame 1. Support rollers 4 are provided between each set of roller support frames 3. An electrical box 5 is provided on the side of one set of roller support frames 3. The electrical box 5 contains a circuit board and signal controller for the motor to drive the support rollers 4 to rotate and for connection to an external power supply. Two support rollers 4 jointly support the transmission belt 6, and two detachable material guides 7 are provided between the two positioning baffles 2, with the distance between the two material guides 7 linearly narrowing. In use, the external robotic arm places the circuit board to be positioned onto the transmission belt 6. The motor inside the electrical box 5 is started, and the motor drives the support roller shaft 4 to rotate, causing the transmission belt 6 to move the circuit board on top of it toward the positioning baffle 2 on one side. During the movement of the circuit board, it comes into contact with the two material guides 7 that gradually close in the inner space. The shape of the circuit board is adjusted by the material guides 7 until the end of the circuit board comes into contact with the edge of the positioning baffle 2. Thus, the two sides of the circuit board are constrained by the material guides 7 on both sides, while the end of the circuit board is constrained by the positioning baffle 2, so that the position of the circuit board is unique. At this time, the external robotic arm vertically grabs the circuit board from the top of the support frame 1 and puts it onto the processing line for assembly and welding. Through the above simple structure, the precise positioning of the circuit board is achieved, which can effectively reduce the failure rate and improve the convenience of maintenance.

[0029] like Figure 1 and Figure 3 As shown, in some embodiments, the top of the transmission belt 6 of this invention is in contact with the bottom of the positioning baffle 2. This design ensures that the circuit board can move smoothly to contact the positioning baffle 2 under the drive of the transmission belt 6, avoiding jamming or tilting of the circuit board at the moment of contact due to the height difference between the top of the transmission belt 6 and the bottom of the positioning baffle 2, thus ensuring the smoothness of the positioning process. At the same time, the contact between the top of the transmission belt 6 and the bottom of the positioning baffle 2 can also guide the transmission of the transmission belt 6, reduce the shaking of the transmission belt 6 during operation, and further improve the stability of the overall structure.

[0030] like Figure 1 , Figure 2 and Figure 3As shown, in some embodiments, a limit switch 8 is provided on the axis of the top of the transmission belt 6 of this utility model. The limit switch 8 is connected to the electrical box 5 through the track groove. The external robotic arm places the circuit board to be positioned on the transmission belt 6, starts the motor in the electrical box 5, and the motor drives the support roller shaft 4 to rotate, causing the transmission belt 6 to move the circuit board on its top towards the positioning baffle 2 on one side. During the movement of the circuit board, it comes into contact with the two material guides 7 that gradually close in the inner space, thereby adjusting the shape of the circuit board through the material guides 7 until the end of the circuit board comes into contact with the edge of the positioning baffle 2. At this time, the pressure of the limit switch 8 increases and triggers the switch, which stops the motor in the electrical box 5 through the switch signal. After the above actions, both sides of the circuit board are in contact with the material guides 7. The inner wall of the guide 7 abuts against the circuit board, while the other two sides of the circuit board are abutted by the positioning baffle 2 and the limit switch 8 respectively, making the position of the circuit board unique and achieving precise positioning. After the circuit board is positioned, the external robotic arm vertically grabs the circuit board from the predetermined position above the support frame 1 and places it on the production line for assembly and welding. When the circuit board is removed from the conveyor belt 6, the pressure on the limit switch 8 disappears. At this time, the limit switch 8 sends a reverse drive command to the motor. The limit switch 8 is driven in reverse by the conveyor belt 6 to abut against the positioning baffle 2 on the other side, and then stops, waiting for the next circuit board to be placed above the conveyor belt 6. This cycle is repeated to achieve the positioning operation. Compared with the positioning device without the limit switch 8, it has better positioning accuracy, saves more energy, and reduces equipment wear.

[0031] like Figure 5 As shown, in some embodiments, the limit switch 8 of this invention is provided with touch buttons 81 on both sides. During the horizontal movement of the limit switch 8 driven by the transmission belt 6, when the end of the circuit board material abuts against the positioning baffle 2, the edge of the circuit board material will simultaneously squeeze the touch button 81. After being pressured, the touch button 81 triggers the internal micro switch. This switch signal is transmitted to the control system of the electrical box 5 in real time. The control system immediately cuts off the motor power, causing the support roller 4 to stop rotating, thereby achieving precise braking of the transmission belt 6 and the limit switch 8. Setting up touch buttons 81 on both sides ensures that during the reverse movement of the transmission belt 6, the touch button 81 can abut against the positioning baffle 2 to trigger a stop, thereby improving the stability of the equipment transmission and ensuring the safety of the equipment. At the same time, the touch button 81 is made of elastic buffer material, which can play a buffering role when in contact with the circuit board material, preventing hard contact from damaging the edge of the circuit board material and ensuring the integrity of the material.

[0032] like Figure 4As shown in some embodiments, the opposing surfaces of the two material guides 7 of this invention are provided with corrective guide plates 71, which are inclined surfaces. When the circuit board moves towards the positioning baffle 2 under the drive of the transmission belt 6, its two side edges will first contact the inclined surfaces of the corrective guide plates 71. As the circuit board continues to move, the inclined surfaces will generate an inward guiding force on it, gradually correcting the horizontal offset of the circuit board and ensuring that it can accurately enter the convergence space between the two material guides 7. The inclined surface angle and corners of the corrective guide plates 71 are optimized to provide sufficient guiding thrust while avoiding excessive compression and deformation of the circuit board edges due to excessive angle.

[0033] Both ends of the material guide 7 are equipped with fixing pins 72, which are connected to the positioning baffle 2 by bolts. By tightening the bolts, the material guide 7 and the positioning baffle 2 can be quickly fixed or disassembled. When it is necessary to replace the material guide 7 with a different specification to adapt to the circuit board material of different sizes, simply loosen the bolts to remove the old material guide 7, then align the new material guide 7 with the positioning baffle 2 through the fixing pins 72 and tighten the bolts. The operation is convenient and the connection is stable, which effectively improves the adaptability of the equipment to different materials.

[0034] like Figure 1 and Figure 3 As shown, in some embodiments, the bottom of the material guide 7 overlaps with the top of the transmission belt 6, and the top of the material guide 7 is not lower than the top of the positioning baffle 2. This design allows the material guide 7 to provide stable support from the bottom when guiding the circuit board, preventing the circuit board from swaying or tilting due to suspension during movement. Simultaneously, the fact that the top of the material guide 7 is not lower than the top of the positioning baffle 2 ensures that the overall height of the circuit board is within the constraint range of the material guide 7 when in contact with the positioning baffle 2, preventing positioning deviations due to height differences and further improving the stability and reliability of positioning. Furthermore, the installation position of the material guide 7 can be limited by the fact that the entire material guide 7 is higher than the fixing pin 72, and horizontal sliding of the material guide 7 is prevented by the contact between its two ends and the positioning baffles 2 at both ends.

[0035] like Figure 1 , Figure 3 and Figure 6As shown in some embodiments, the inner wall of the transmission belt 6 of this invention is provided with anti-slip teeth 61, and the outer surface of the support roller shaft 4 is provided with driving teeth 41. The anti-slip teeth 61 and the driving teeth 41 mesh. Through the meshing transmission of the anti-slip teeth 61 and the driving teeth 41, the driving force of the motor can be stably and accurately transmitted to the transmission belt 6, avoiding the slippage phenomenon that may occur in traditional friction transmission, thereby ensuring the transmission speed and displacement accuracy of the transmission belt 6, and providing reliable power guarantee for the accurate positioning of the circuit board. At the same time, the meshing structure can also effectively disperse the force during the transmission process, reduce the local wear of the transmission belt 6 and the support roller shaft 4, and extend the service life of the equipment.

[0036] It is worth mentioning that in some embodiments, the length of the support roller shaft 4 is greater than the width of the transmission belt 6, and the length of the drive tooth 41 is equal to the width of the transmission belt 6. When the drive tooth 41 and the anti-slip tooth 61 are fully engaged, the portion of the support roller shaft 4 that extends beyond the width of the transmission belt 6 can provide lateral support to both sides of the transmission belt 6, limiting the lateral displacement of the transmission belt 6 during transmission. Simultaneously, the design that the width of the drive tooth 41 is equal to the width of the transmission belt 6 ensures that the meshing area can uniformly cover the transmission surface of the transmission belt 6, avoiding vibration or abnormal noise caused by uneven force on the transmission belt 6 due to insufficient meshing length, further improving the stability and operating accuracy of the transmission system.

[0037] In summary, the SMT component precise positioning rack of this utility model uses a transmission belt 6 to transport circuit board components, and a limit switch 8 at the top of the transmission belt 6 to push the circuit board forward. During the movement of the circuit board components, they come into contact with the material guides 7 on both sides, thereby guiding their position until the circuit board components come into contact with the positioning baffle 2, triggering the touch button 81 and stopping the machine. This achieves precise positioning of the circuit board components through a simple structure and simple operating logic.

[0038] This utility model detachably installs the material guide 7 on the positioning baffle 2, thereby allowing different models of material guide 7 to be adapted to the circuit board material according to the different sizes and shapes of the circuit board material, achieving a convenient and flexible adjustment effect.

[0039] This invention improves the accuracy of driving the transmission belt 6 by providing anti-slip teeth 61 on the inner wall of the transmission belt 6 and driving teeth 41 on the outer surface of the support roller shaft 4, so that the anti-slip teeth 61 and the driving teeth 41 mesh to transmit power. Furthermore, by setting the length of the support roller shaft 4 to be greater than the width of the transmission belt 6 and making the width of the driving teeth 41 equal to that of the transmission belt 6, when the driving teeth 41 and the anti-slip teeth 61 mesh, the horizontal position of the transmission belt 6 can be limited by the driving teeth 41 to prevent the transmission belt 6 from deviating during transmission.

[0040] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0041] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A precision positioning rack for SMT (Surface Mount Technology) components, characterized in that, Includes a support frame (1), the support frame (1) is rectangular, the inner walls of both ends of the support frame (1) are provided with positioning baffles (2), both ends of the support frame (1) are provided with a set of roller support frames (3), and a support roller (4) is provided between each set of roller support frames (3). An electrical box (5) is provided on the side of one set of roller support frames (3), and a motor is provided in the electrical box (5) to drive the support roller (4) to rotate. The two support rollers (4) are supported by a transmission belt (6), and two detachable material guides (7) are provided between the two positioning baffles (2), with the distance between the two material guides (7) linearly narrowing.

2. The SMT component precise positioning rack according to claim 1, characterized in that: The top of the transmission belt (6) is in contact with the bottom of the positioning baffle (2).

3. The SMT component precise positioning rack according to claim 2, characterized in that: A limit switch (8) is provided on the axis at the top of the transmission belt (6), and the limit switch (8) is connected to the electrical box (5) through the track groove.

4. The SMT component precision positioning rack according to claim 3, characterized in that: Both sides of the limit switch (8) are provided with touch buttons (81).

5. The SMT component precision positioning rack according to claim 1, characterized in that: The opposing surfaces of the two material guides (7) are provided with correction guide plates (71), and the correction guide plates (71) are inclined surfaces; Both ends of the material guide (7) are provided with fixing pins (72), and the fixing pins (72) are connected to the positioning baffle (2) by bolts.

6. The SMT component precision positioning rack according to claim 5, characterized in that: The bottom of the material guide (7) overlaps with the top of the transmission belt (6), and the top of the material guide (7) is not lower than the top of the positioning baffle (2).

7. The SMT component precise positioning rack according to any one of claims 1-6, characterized in that: The inner wall of the transmission belt (6) is provided with anti-slip teeth (61), and the outer surface of the support roller shaft (4) is provided with driving teeth (41). The anti-slip teeth (61) and the driving teeth (41) mesh.

8. The SMT component precision positioning rack according to claim 7, characterized in that: The length of the support roller shaft (4) is greater than the width of the transmission belt (6), and the length of the drive tooth (41) is equal to the width of the transmission belt (6).

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