Automatic chip mounter with high mounting precision

Abstract

The utility model specifically relates to the technical field of chip mounters, and discloses an automatic chip mounter with high mounting accuracy, which comprises a rack, the middle of the rack is rotatably connected with a conveying belt, the top end of the rack is fixedly provided with a mounting plate I, the top end of the mounting plate I is fixedly provided with an electric push rod, the bottom end of the mounting plate I is provided with a positioning assembly, and the positioning assembly is fixedly connected with the conveying belt. The positioning assembly comprises a first clamping plate fixedly arranged at the output end of the electric push rod, the bottom end of the first clamping plate is movably connected with a second clamping plate, and a protective pad is fixedly arranged at the bottom end, close to the second clamping plate, of the first clamping plate. By arranging the first mounting plate, the electric push rod and the positioning assembly, the positioning assembly comprises the first clamping plate, the second clamping plate and the protective pad, the second clamping plate is slidably connected to the bottom end of the first clamping plate and used for limiting displacement of the circuit board, and when the first clamping plate is continuously pressed downwards, the protective pad clamps the circuit board, so that the circuit board is prevented from being damaged; therefore, the stability and the efficiency of clamping and positioning the circuit board are improved, and the chip mounting precision is improved.

Description

Technical Field

[0001] This utility model belongs to the field of chip mounter technology, and in particular relates to an automatic chip mounter with high mounting accuracy. Background Technology

[0002] A pick-and-place machine, also known as a surface mount system, is a device that is installed after a dispensing machine or screen printer in a production line. It works by using a moving suction cup to pick up components and then accurately place them on a PCB circuit board.

[0003] Existing automatic placement machines typically include a moving suction cup and a conveyor belt. The conveyor belt is driven by a motor to move the circuit board directly under the moving suction cup, and then the moving suction cup picks up and places the components, thus achieving automatic placement.

[0004] During the operation of existing automatic placement machines, the positioning of circuit boards transported on the conveyor belt surface may be deviated due to inertia, which affects the accuracy of automatic placement. Utility Model Content

[0005] This invention provides an automatic placement machine with high placement accuracy, aiming to solve the problem that the positioning of circuit boards transported on the conveyor belt surface by inertia may be deviated during the use of existing automatic placement machines, thus affecting the automatic placement accuracy.

[0006] This utility model is implemented as follows: an automatic chip mounter with high mounting accuracy includes a frame, a conveyor belt rotatably connected to the middle of the frame, a mounting plate 1 fixed to the top of the frame, an electric push rod fixed to the top of the mounting plate 1, a positioning assembly at the bottom of the mounting plate 1, the positioning assembly including a clamping plate 1 fixed to the output end of the electric push rod, a clamping plate 2 movably connected to the bottom of the clamping plate 1, a protective pad fixed to the bottom of the clamping plate 1 near the clamping plate 2, a slide rail fixed to the surface of the frame near the mounting plate 1, a sliding frame slidably connected to the top of the slide rail, a cylinder 1 fixed to the side wall of the sliding frame, a mounting plate 2 fixed to the output end of the cylinder 1, a cylinder 2 fixed to the top of the mounting plate 2, a suction cup fixed to the output end of the cylinder 2, and a displacement sensor fixed to the bottom of the mounting plate 2 near the suction cup.

[0007] Preferably, a tray is fixed to the top of the frame near the mounting plate, and the surface of the tray has a number of grooves for mounting components to be snapped and positioned, which improves the accuracy of picking up the surface mount components.

[0008] Preferably, two grooves are symmetrically formed on the inner side wall of the frame near the conveyor belt for the circuit board to be snapped in. The bottom of the groove is flush with the surface of the conveyor belt, which improves the stability of the circuit board conveying.

[0009] Preferably, two vertical rods are symmetrically fixed at the top of the second clamping plate, and a limiting block is fixed at the top of each vertical rod. Two slots are opened inside the first clamping plate for the vertical rods to be inserted. The external dimensions of the vertical rods are adapted to the internal dimensions of the slots, which improves the stability of the vertical displacement of the second clamping plate and the first clamping plate.

[0010] Preferably, a vacuum pump is fixed at the top of the sliding frame. The vacuum pump is a KB-20V model, and the negative pressure port of the vacuum pump is connected to the suction cup through a pipe.

[0011] Preferably, a sensor camera is fixedly mounted on the bottom end of the mounting plate second near the suction cup. The electric actuator, slide rail, cylinder one, vacuum pump, cylinder two, displacement sensor and sensor camera are sequentially coupled to the PLC controller, which improves the accuracy of electric actuator control.

[0012] Compared with the prior art, the embodiments of this application have the following main advantages:

[0013] Firstly, by setting up a mounting plate, an electric push rod, and a positioning assembly, the positioning assembly includes a clamping plate, a clamping plate, and a protective pad. The clamping plate is slidably connected to the bottom end of the clamping plate to limit the displacement of the circuit board. When the clamping plate continues to press down, the protective pad clamps the circuit board, thereby avoiding damage to the circuit board and improving the stability and efficiency of the circuit board clamping and positioning, thus improving the placement accuracy. Secondly, by setting up a vertical rod, a limiting block, and a slot, the vertical rod is adapted to the internal dimensions of the slot, thereby improving the stability of the vertical movement of the clamping plate. Attached Figure Description

[0014] Figure 1 This is a frontal three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a side view of the mounting structure of this utility model.

[0016] Figure 3 This is a side view of the three-dimensional structure of the positioning component of this utility model.

[0017] Figure 4 This is a schematic diagram of the installation structure of the clamping plate of this utility model.

[0018] The attached diagram is labeled as follows: 1. Frame; 2. Conveyor belt; 3. Mounting plate one; 4. Electric push rod; 5. Positioning assembly; 501. Clamping plate one; 502. Clamping plate two; 503. Protective pad; 504. Vertical rod; 505. Limiting block; 506. Groove; 6. Slide rail; 7. Sliding frame; 8. Cylinder one; 9. Vacuum pump; 10. Mounting plate two; 11. Cylinder two; 12. Displacement sensor; 13. Suction cup; 14. Tray; 15. Groove one; 16. Sensor camera; 17. Groove two. Detailed Implementation

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] Please see Figure 1-4The present invention provides an embodiment of an automatic chip mounter with high mounting accuracy, comprising a frame 1, a conveyor belt 2 rotatably connected to the middle of the frame 1, the conveyor belt 2 being driven by a motor and a drive roller shaft, thereby improving the efficiency of circuit board conveying; a mounting plate 3 is bolted to the top of the frame 1, an electric push rod 4 is bolted to the middle of the top of the mounting plate 3, and a positioning assembly 5 is provided at the bottom of the mounting plate 3; the positioning assembly 5 includes a clamping plate 501 fixed to the output end of the electric push rod 4 by a coupling, and a clamping device is movably connected to the bottom of the clamping plate 501. Plate 2 502, clamping plate 1 501 and clamping plate 2 502 are L-shaped. A protective pad 503 is fixed to the bottom end of clamping plate 1 501 near clamping plate 2 502. The protective pad 503 is made of rubber and is fixed by heat fusion. A tray 14 is fixed to the top of the frame 1 near mounting plate 1 3. The surface of the tray 14 has several grooves 15 for mounting components to be snapped, stacked and positioned, which improves the accuracy of picking up surface mount components. A slide rail 6 is fixed to the surface of the frame 1 near mounting plate 1 3. A sliding frame 7 is slidably connected to the top of the slide rail 6. Activating the slide rail 6 can drive the sliding frame 7 to move on the slide rail 6. The internal linear motion is achieved. A cylinder 8 is fixed to the side wall of the sliding frame 7, and a mounting plate 10 is fixed to the output end of cylinder 8. Activating cylinder 8 moves mounting plate 10 horizontally. A cylinder 11 is fixed to the top of mounting plate 10, and a suction cup 13 is fixed to the output end of cylinder 11. Activating cylinder 11 adjusts the height of suction cup 13 for easy component pickup and pasting. A vacuum pump 9 (KB-20V model) is bolted to the top of the sliding frame 7 to create negative pressure. The negative pressure port of vacuum pump 9 is connected to suction cup 13 via a pipe for suction. The component, mounting plate 2 10, is fixed with a displacement sensor 12 near the bottom of the suction cup 13. This sensor is used to detect and position the mounting plate 2 10 and the suction cup 13. When the circuit board moves below the mounting plate 2 10, the electric push rod 4 is activated to drive 401 to move vertically downward, so that clamping plate 2 502 is supported on the surface of the conveyor belt 2. When the circuit board touches the side wall of clamping plate 2 502, the conveyor belt 2 stops rotating. Then, the electric push rod 4 is driven to continuously press clamping plate 1 501 downward, so that the protective pad 503 is clamped on the top of the circuit board, thereby improving the accuracy and stability of the circuit board installation and positioning.

[0022] Two grooves 17 are symmetrically provided on the inner wall of the frame 1 near the conveyor belt 2 for the circuit board to be snapped in. The bottom of the groove 17 is flush with the surface of the conveyor belt 2, which improves the stability of the circuit board conveying.

[0023] Two vertical rods 504 are symmetrically fixed at the top of the second clamping plate 502. Each vertical rod 504 has a limiting block 505 fixed at its top. Two slots 506 are opened inside the first clamping plate 501 for the vertical rods 504 to be inserted. The external dimensions of the vertical rods 504 are adapted to the internal dimensions of the slots 506, which improves the stability of the vertical displacement of the second clamping plate 502 and the first clamping plate 501.

[0024] A sensor camera 16 is fixedly mounted on the bottom of the mounting plate 2 10 near the suction cup 13. The electric actuator 4, slide rail 6, cylinder 1 8, vacuum pump 9, cylinder 2 11, displacement sensor 12 and sensor camera 16 are coupled to the PLC controller in sequence. The sensor camera 16 visually detects the position of the circuit board, thereby facilitating the early start of the electric actuator 4 and improving the control accuracy of the electric actuator 4.

[0025] Working Principle: When using this high-precision automatic chip mounter, the operator first connects an external power supply and places the circuit boards sequentially on the surface of the conveyor belt 2. Starting the conveyor belt 2 causes the circuit boards to move horizontally and stably within the groove 17, thus improving the efficiency of circuit board transport. When the circuit board moves below the mounting plate 10, the electric push rod 4 is activated, driving 401 to move vertically downwards, thereby supporting the clamping plate 502 on the surface of the conveyor belt 2. When the circuit board touches the side wall of the clamping plate 502, the conveyor belt 2 stops rotating, and the electric push rod 4 is then driven to continuously press down the clamping plate 501, thus clamping the circuit board with the protective pad 503. The top of the tray 14 is adjusted to improve the accuracy and stability of the circuit board mounting and positioning. The slide rail 6, cylinder 8 and cylinder 11 are activated in sequence to adjust the position of the suction cup 13. When the suction cup 13 moves to the top of the tray 14, cylinder 11 is activated to make the suction cup 13 move vertically downward, so that it can be inserted into different grooves 15 to adsorb different components. Then, cylinder 11, cylinder 8 and slide rail 6 are driven in sequence to improve the accuracy of the chip placement. After the processing is completed, the electric push rod 4 is activated to retract, which can drive clamping plate 501 and clamping plate 502 to move vertically upward in sequence, thereby releasing the limit on the circuit board and making it convenient for the circuit board to continue to move along the conveyor belt 2.

[0026] Secondly, the vertical rods 504 are slidably connected inside the slots 506, thereby improving the stability of the relative displacement of clamping plates 501 and 502.

[0027] Finally, the waste cylinder 15 penetrates the side wall of the U-shaped bracket 8. When a lot of debris is collected inside the waste cylinder 15, the waste cylinder 15 can be opened by rotating the end cover 16 to take out the debris and filter layer 20, making it convenient to replace the new filter layer 20. The protective cover 13 is funnel-shaped and fitted on the outer surface of the vertical rod 11 to prevent debris from contaminating the motor 10.

[0028] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0029] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units described above may be implemented in other ways in practice. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0030] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. An automatic placement machine with high placement accuracy, characterized in that, The system includes a frame (1): a conveyor belt (2) is rotatably connected to the middle of the frame (1), a mounting plate (3) is fixedly installed at the top of the frame (1), an electric push rod (4) is fixedly installed at the top of the mounting plate (3), a positioning component (5) is provided at the bottom of the mounting plate (3), the positioning component (5) includes a clamping plate (501) fixedly installed at the output end of the electric push rod (4), a clamping plate (502) is movably connected to the bottom of the clamping plate (501), and a protective device is fixedly installed at the bottom of the clamping plate (501) near the clamping plate (502). The protective pad (503) has a slide rail (6) fixed on the surface of the frame (1) near the mounting plate (3). The top of the slide rail (6) is slidably connected to a sliding frame (7). A cylinder (8) is fixed on the side wall of the sliding frame (7). A mounting plate (10) is fixed at the output end of the cylinder (8). A cylinder (11) is fixed at the top of the mounting plate (10). A suction cup (13) is fixed at the output end of the cylinder (11). A displacement sensor (12) is fixed at the bottom end of the mounting plate (10) near the suction cup (13).

2. The automatic placement machine with high placement accuracy according to claim 1, characterized in that: The frame (1) is fixed with a tray (14) near the top of the mounting plate (3). The surface of the tray (14) has several grooves (15) for mounting components to be snapped and positioned.

3. The automatic placement machine with high placement accuracy according to claim 2, characterized in that: Two grooves (17) are symmetrically opened on the inner side wall of the frame (1) near the conveyor belt (2) for the circuit board to be snapped in. The inner bottom of the groove (17) is flush with the surface of the conveyor belt (2).

4. The automatic placement machine with high placement accuracy according to claim 1, characterized in that: Two vertical rods (504) are symmetrically fixed at the top of the second clamping plate (502), and each vertical rod (504) is fixed with a limiting block (505) at the top. Two slots (506) are opened inside the first clamping plate (501) for the vertical rods (504) to be inserted. The external dimensions of the vertical rods (504) are adapted to the internal dimensions of the slots (506).

5. The automatic placement machine with high placement accuracy according to claim 1, characterized in that: A vacuum pump (9) is fixedly mounted on the top of the sliding frame (7). The vacuum pump (9) is a KB-20V model. The negative pressure port of the vacuum pump (9) is connected to the suction cup (13) through a pipe.

6. The automatic placement machine with high placement accuracy according to claim 1, characterized in that: The mounting plate 2 (10) is fixed with a sensor camera (16) near the bottom of the suction cup (13). The electric push rod (4), slide rail (6), cylinder 1 (8), vacuum pump (9), cylinder 2 (11), displacement sensor (12) and sensor camera (16) are sequentially coupled to the PLC controller.

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