A backlight feeder stripping system based on top camera recognition and chip mounter

Abstract

The utility model provides a kind of backlight fly to strip system and paster based on top camera identification, the backlight fly to strip system includes fly, adjustable camera module, coaxial backlight light source and change volume turntable, adjustable camera module is installed in the top of fly, coaxial backlight light source is installed in the feed end below of fly, the center through-hole of coaxial backlight light source coincides with the optical axis of camera, the support rear end of fly is integrated the change volume turntable, change volume turntable can rotate around its central axis, multiple equidistant distribution volume shafts are configured on change volume turntable, volume shaft is equipped with adaptive tape head fixing mechanism.The utility model has the beneficial effects that: the utility model integrates change volume turntable in fly support rear end, multiple equidistant distribution volume shafts are configured on turntable, support multiple volume preloading;The utility model is equipped with adaptive tape head fixing mechanism 5 for volume shaft, compatible with different width and thickness volume, ensure that tape head is accurately fixed.

Description

Technical Field

[0001] This utility model relates to the field of chip mounter technology, and in particular to a backlight feeder stripping system and chip mounter based on top camera recognition. Background Technology

[0002] Feeders, also known as material feeders or material handlers, are the core feeding equipment of pick-and-place machines. Their function is to ensure high-speed, high-precision placement of components (such as tape-and-reel packaged ICs, resistors, and capacitors) by accurately conveying reel-packaged components. The reliability, compatibility, and positioning accuracy of feeders directly affect the overall efficiency and yield of the SMT production line.

[0003] Currently, the feeder technology in the industry has the following shortcomings:

[0004] 1. Poor compatibility: Traditional feeder equipment often suffers from unstable feeding and mismatched configuration due to differences in roll material specifications (width, thickness) during the roll material layout process, requiring frequent manual intervention and affecting production efficiency;

[0005] 2. Labeling accuracy cannot be met: Ordinary feeders (including pneumatic and mechanical feeders) rely on fiber optic sensing to detect material movement when handling small or high-precision components, which often fails to meet the required accuracy standards. For example, when handling micro-components, standard feeders may encounter problems such as inaccurate feeding or component positioning deviation; the fixed spacing of the fiber optic sensing components is inconvenient to adjust, and compatibility with roll-to-roll layout is poor. Utility Model Content

[0006] To address the problems in the prior art, this utility model provides a backlit feeder stripping system based on top camera recognition, including a feeder, an adjustable camera module, a coaxial backlight source, and a roll changing turntable. The adjustable camera module is mounted above the feeder, and the coaxial backlight source is installed below the feeder's feed end. The central through-hole of the coaxial backlight source coincides with the optical axis of the camera. The roll changing turntable is integrated at the rear end of the feeder's bracket and can rotate around its central axis. The roll changing turntable is equipped with multiple equidistantly distributed roll shafts, and each roll shaft is equipped with an adaptive head fixing mechanism.

[0007] As a further improvement of this utility model, the adaptive lead fixing mechanism includes a base plate fixing block, a movable front block is installed on the top of one side of the base plate fixing block, the movable front block is provided with a plurality of preset holes, and a positioning front block for positioning the lead of the coil is installed on the top of the other side of the base plate fixing block corresponding to the movable front block. One end of the lead fixing block is installed on the movable front block, and the other end of the lead fixing block is installed on the positioning front block. The lead fixing block is used to clamp and fix the lead of the coil. The base plate fixing block is also equipped with the grooved block, the grooved block is connected to the movable front block, and the grooved block is provided with a plurality of adjustment holes.

[0008] As a further improvement of this utility model, the adjustable camera module includes an adjustment fixing plate, a camera, and a camera base plate. The adjustment fixing plate is provided with multiple adjustment holes, and the camera is mounted on the adjustment holes through the camera base plate. A support arm is installed on each side of the adjustment fixing plate.

[0009] As a further improvement of this utility model, the adjustable camera module also includes pads, and one pad is installed on the inner side of the bottom of each support arm.

[0010] As a further improvement of this utility model, the adjustable camera module also includes a reinforcing plate, one end of which is installed at the end of the adjustment fixing plate, and the other end of which is installed at the top of the support arm.

[0011] As a further improvement of this utility model, the bearing of the roll shaft is fixed on the feeder bracket, and the roll changing turntable is installed at the end of the feeder bracket; each roll shaft is equipped with one of the adaptive head fixing mechanisms, or multiple roll shafts are equipped with one adaptive head fixing mechanism.

[0012] As a further improvement of this utility model, the backlight feeder stripping system also includes a Y-axis adjustment fixing block and a Y-axis fine-tuning screw. The Y-axis adjustment fixing block is installed on the side of the adjustment fixing plate. One end of the Y-axis fine-tuning screw passes through the fixing component on the feeder bracket, and the other end extends into the Y-axis adjustment fixing block. The adjustment screws are respectively installed at both ends of the adjustment fixing block, and the adjustment screws pass through the adjustment fixing block and extend into the support arm.

[0013] As a further improvement of this utility model, the backlight feeder stripping system includes a turntable motor and a roll motor. The turntable motor drives the roll changing shaft to rotate through the central rotating shaft, and the roll motor drives the roll shaft to rotate for unwinding or rewinding.

[0014] As a further improvement of this utility model, there are two cameras, and the cameras are 5-megapixel industrial cameras.

[0015] This utility model also discloses a chip mounter, including the backlight feeder stripping system described in this utility model.

[0016] The beneficial effects of this utility model are:

[0017] 1. To address the issues of unstable feeding and mismatched configuration caused by variations in roll material specifications (width, thickness) during the layout process of traditional feeder equipment, which necessitates frequent manual intervention and impacts production efficiency, this invention integrates a roll-changing turntable at the rear end of the feeder support. The turntable is equipped with multiple equidistantly distributed roll shafts, supporting pre-loading of multiple rolls. Furthermore, this invention features an adaptive lead-fixing mechanism for the roll shafts, compatible with rolls of different widths and thicknesses, ensuring precise lead-fixing.

[0018] 2. To address the issues of inconsistent labeling for small materials in traditional feeders, resulting in insufficient labeling accuracy, and the inconvenience of adjusting the fixed spacing of the fiber optic sensing components, a camera XY axis fine-tuning (resolution 0.01mm) is achieved by adjusting the fixing plate, supporting fast focusing and field of view calibration. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the overall mechanism of the backlight feeder of this utility model;

[0020] Figure 2 This is a structural diagram of the adaptive head fixing mechanism of this utility model;

[0021] Figure 3 This is a structural diagram of the base plate fixing block of the adaptive head fixing mechanism of this utility model;

[0022] Figure 4 This is an overall structural diagram of the backlight feeder stripping system of this utility model;

[0023] Figure 5 This is a structural diagram of the adjusting and fixing block of this utility model;

[0024] Figure 6 This is a partial enlarged view of the adjusting and fixing block of this utility model;

[0025] Reference numerals: 1-Feeder, 2-Camera, 3-Roll changer, 4-Roll shaft, 5-Adaptive head fixing mechanism, 6-Adjusting fixing plate, 7-Adjusting screw, 8-Camera base plate, 9-Y-axis fine-tuning screw, 10-Reinforcing plate, 11-Y-axis adjusting fixing block, 50-Mounting position, 51-Movable front block, 52-Positioning front block, 53-Head fixing block, 54-Discharge point, 55-Base plate fixing block slot, 57-Base plate fixing block, 61-Adjusting hole, 62-Support arm, 63-Padded block; Detailed Implementation

[0026] like Figure 1 , 4 As shown, this utility model discloses a backlit feeder stripping system based on top camera recognition, including a feeder 1, an adjustable camera module, and a roll changing turntable 3. The feeder 1 is used to convey the material belt. The adjustable camera module is installed above the feeder 1 to dynamically identify the position of the material belt and provide feedback adjustment signals. The adjustable camera module includes a camera 2. A coaxial backlight source is provided below the feed end of the feeder 1. The central through-hole of the coaxial backlight source coincides with the optical axis of the camera 2. The light emitted by the coaxial backlight source penetrates vertically through the material belt being measured (such as film, transparent material, etc.) to form uniform backlight. The penetrated light carries the transmission signal of the material belt. Information (such as defects, thickness variations, etc.) enters the lens of camera 2 along the same optical axis for imaging. The rear end of the feeder 1's bracket integrates a roll changing turntable 3. The roll changing turntable 3 is equipped with multiple equidistantly distributed roll spinning shafts 4. The roll spinning shafts 4 are used to carry spare rolls and support pre-loading of multiple rolls. Each roll spinning shaft 4 is equipped with an adaptive head fixing mechanism 5, or multiple roll spinning shafts 4 are equipped with an adaptive head fixing mechanism 5, which can be compatible with rolls of different widths and thicknesses and ensure precise fixing of the head. The roll changing turntable 3 can rotate around its central axis to switch any roll spinning shaft 4 to the working position and dock with the feeder 1's inlet.

[0027] A rewinding turntable 3 is equipped with multiple roll shafts 4. The rewinding turntable 3 and the roll shafts 4 achieve coordinated operation through a linkage transmission mechanism. The rewinding turntable 3 is driven by a turntable motor via a central shaft to achieve station switching. The roll shafts 4 are driven by separate roll motors and are responsible for rotating the rolls for unwinding or rewinding. The first motor drives the take-up roller to rotate, while the second motor drives the turntable to rotate, achieving station switching. The two are controlled independently and do not interfere with each other, but they work together to complete the roll switching task.

[0028] like Figure 2 , 3 As shown, the adaptive head fixing mechanism 5 consists of the following components:

[0029] Belt fixing block 53: Used to clamp and fix the belt head of the coil.

[0030] Active front block 51: An adjustable component for accommodating rolls of material of different widths and thicknesses.

[0031] Base plate fixing block 50: provides stable support and a fixed foundation.

[0032] Positioning front block 52: Used to accurately position the lead of the coil.

[0033] Bottom plate fixing block 50: connected to the movable front block 51, used to adapt to rolls of different thicknesses and ensure tight fit.

[0034] A movable front block 51 is installed on the top of one side of the base plate fixing block 50. The movable front block 51 has multiple preset holes for adjusting its position. A positioning front block 52 is installed on the top of the other side of the base plate fixing block 50 corresponding to the movable front block 51. One end of the head fixing block 53 is installed on the movable front block 51, and the other end of the head fixing block 53 is installed on the positioning front block 52. A discharge port 54 is provided below the head fixing block 53 and is located on the base plate fixing block 50. The base plate fixing block 50 is also equipped with a grooved block, which is assembled at the mounting position 50.

[0035] These components work together to precisely fix and guide the coil lead. The movable front block 51 is connected to the grooved block 56 (the grooved block uses existing technology, and its specific structure is not shown separately in the accompanying drawings). The grooved block has pre-set holes, which are adjusted according to different coil sizes. Thanks to its elasticity and adjustability, the grooved block can tightly fit the coil, ensuring effective fixation.

[0036] Principle of fit:

[0037] Initial positioning: The lead of the coil is guided to the inlet position of the adaptive lead fixing mechanism 5. The active front block 51 and the positioning front block 52 work together to ensure that the lead of the coil is initially aligned.

[0038] Grooved block adjustment: The grooved blocks adaptively adjust according to the thickness of the coil material. For thinner coil materials, the grooved blocks are slightly raised to reduce pressure on the coil material; for thicker coil materials, the grooved blocks are pressed downwards to increase the contact area with the coil material and ensure a secure hold.

[0039] The adaptive head fixing mechanism 5, with the grooved block adaptively adjusting according to the thickness of the coil material, is existing technology and will not be described in detail here.

[0040] Feedback Control System Adjustment: During the pressure adjustment process with the grooved block, the roll control system receives real-time feedback from the film pressure sensor. This closed-loop control mechanism can promptly correct positional deviations, thereby ensuring the accuracy of material feeding. The feedback control system mainly provides feedback on the following aspects: Roll edge position: An edge detection sensor monitors the edge position of the roll to prevent it from shifting during feeding and ensures neat feeding of the roll; Roll speed feedback: A speed sensor detects the feeding speed of the roll to ensure it matches the operating speed of the equipment. If the speeds are inconsistent, the feedback system adjusts the speed of the drive motor of the roll shaft to maintain a constant feeding speed. The feedback control system is an inherent component of the feeder equipment and belongs to existing technology, so it will not be elaborated here.

[0041] Adjustment of movable front block 51: According to the width of the roll, the operator loosens the fixing bolts and moves the movable front block 51 along the preset hole to the appropriate position so that it precisely matches the width of the roll. After adjustment, tighten the bolts again to ensure that the movable front block 51 is fixed.

[0042] Precise Fixing: The lead fixing block 53 and the positioning front block 52 work together to clamp and fix the lead of the coil at the beginning of the feeding path. The lead fixing block 53 provides the main clamping force, while the positioning front block 52 ensures the precise alignment of the lead.

[0043] Guided feeding: The coil shaft 4 begins to rotate, driving the feeding of the coil. The bearings of the coil shaft 4 are fixed on the feeder bracket, ensuring smooth and stable rotation of the coil. The rotation of the coil shaft 4 drives the feeding of the coil, while the lead feeding mechanism (fixed mechanism, coil shaft 4, and changing turntable 3), through its unique design, ensures that the lead of the coil remains in a stable position during rotation, preventing deviation or loosening. The grooved design of the grooved blocks increases the contact area with the coil, providing stronger friction and preventing the coil from slipping or deviating during feeding.

[0044] Leading fixing mechanism: Ensures stable fixing and guidance of the leading element;

[0045] Roll shaft 4: Carries and feeds the roll material;

[0046] Rotary roll changer 3: Enables preloading and rapid switching of multiple rolls of material;

[0047] Auxiliary components, such as tension control and sensors, ensure a stable and accurate feeding process;

[0048] These components work together to achieve stable material supply and efficient production of coiled materials.

[0049] Traditional feeders rely on fiber optic sensing, which suffers from poor stability in recognizing minute materials (such as 0201 packaged components), easily leading to feeder misalignment or missed feeding. To solve this problem, this invention employs a high-resolution vision system. This system uses a 5-megapixel industrial camera, and the feeder 1 is paired with a coaxial backlight source to achieve a positioning accuracy of ±0.01mm. The coaxial backlight source provides parallel, coaxial, and uniform backlight illumination, meeting the requirements of high-precision visual inspection.

[0050] like Figure 4As shown, the adjustable camera module includes an adjustment fixing plate 6, a camera 2, and a camera base plate 8. The adjustment fixing plate 6 is provided with multiple adjustment holes 61. The camera 2 is mounted on the adjustment holes 61 through the camera base plate 8. A support arm 62 is installed on each side of the adjustment fixing plate 6. The adjustment fixing plate 6 is suspended above the feeder bracket by the support arms on its left and right sides. The specific installation method is that the support arms 62 and the bracket adopt an elongated hole + bolt structure. The adjustment fixing plate 6 can move back and forth or left and right along the width direction of the roll.

[0051] The adjustable camera module also includes pads 63. One pad 63 is installed on the inner side of the bottom of each support arm 62. The main functions of the pads 63 are: 1. Precision positioning and height adjustment: By using pads of different thicknesses, the optical axis of the camera is precisely adjusted to the same height as the reference surface of the roll material to ensure clear images and accurate measurements; 2. Vibration reduction and isolation: The pads 63 are made of POM (polyoxymethylene) to absorb the high-frequency vibration of the feeder and prevent image jitter; 3. Secondary function: Low-friction sliding: If the camera 2 needs to be finely adjusted along the bracket, the surface of the pads 63 will be anodized to reduce sliding resistance.

[0052] The high-resolution vision system of this invention can dynamically detect changes in the thickness and width of rolled materials in real time and provide feedback based on visual analysis.

[0053] The adjustable camera module also includes a reinforcing plate 10, one end of which is mounted on the end of the adjusting and fixing plate 6, and the other end of which is mounted on the top of the support arm 62.

[0054] The high-resolution vision system of this invention has enhanced adaptability: it can handle tiny components larger than 0.2mm × 0.4mm and cover complex materials such as LEDs and ICs.

[0055] Traditional feeder cameras are greatly affected by ambient light, have slow recognition speed, and have low recognition rate for transparent elements (such as transparent tape). However, the top camera of this invention uses an adjustable brightness hybrid light source, which is an RGBW (red-green-blue-white) four-color coaxial ring light source. The motion control card performs automatic dynamic adjustment to eliminate the influence of ambient light and improve the image signal-to-noise ratio.

[0056] Traditional feeders suffer from the drawback that the camera 2 is fixed in position and adjustment relies on manual operation. This invention employs an adjustable camera module: fine-tuning of the camera's X and Y axes (resolution 0.01mm) is achieved by adjusting the fixed plate 6, supporting fast focusing and field-of-view calibration. The adjustment process is as follows: Figure 5 , 6As shown, a Y-axis adjusting block 11 and a Y-axis fine-tuning screw 9 are installed on the side of the adjusting plate 6. One end of the Y-axis fine-tuning screw 9 passes through the fixing component on the feeder bracket, and the front end of the other end extends into the Y-axis adjusting block 11 set on the adjusting plate 6. During the adjustment process, by loosening the adjusting screw 7, the Y-axis fine-tuning screw 9 can be rotated to push the fixing plate 6 to move slightly along the Y direction.

[0057] Adjustable camera modules are existing technology and will not be discussed further here.

[0058] The working process of the backlight feeder stripping system is as follows:

[0059] 1. Place the components at the feeder material positioning position;

[0060] 2. Materials are conveyed via a backlit feeder conveyor mechanism;

[0061] 3. Once the product is in place, the top camera 2 identifies the material, and the relevant information identified by the camera 2 is transmitted to the system;

[0062] 4. The system uses the information transmitted by camera 2 to determine whether the component is correct. If it is correct, the component is picked up.

[0063] 5. Component mounting;

[0064] 6. The feeder is reset, ready for the next pickup.

[0065] Improvements of this utility model:

[0066] 1. To address the issues of unstable feeding and mismatched configuration caused by variations in roll material specifications (width, thickness) during the layout process of traditional feeder equipment, which necessitates frequent manual intervention and impacts production efficiency, this utility model integrates a roll-changing turntable at the rear end of the feeder bracket. The turntable is equipped with multiple equidistantly distributed roll shafts to support pre-loading of multiple rolls. Furthermore, an adaptive lead fixing mechanism 5 is provided for the roll shafts 4 to accommodate rolls of different widths and thicknesses, ensuring precise lead fixing.

[0067] 2. To address the issues of inconsistent labeling for small materials in traditional feeders, resulting in insufficient labeling accuracy, and the inconvenience of adjusting the fixed spacing of the fiber optic sensing components, the XY axis of the camera is finely adjusted (resolution 0.01mm) by adjusting the fixing plate 6, supporting fast focusing and field of view calibration.

[0068] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A backlit feeder stripping system based on top camera recognition, characterized in that: The device includes a feeder (1), an adjustable camera module, a coaxial backlight source, and a roll changing turntable (3). The adjustable camera module is mounted on top of the feeder (1). The coaxial backlight source is mounted below the feed end of the feeder (1). The central through hole of the coaxial backlight source coincides with the optical axis of the camera (2). The roll changing turntable (3) is integrated at the rear end of the support of the feeder (1). The roll changing turntable (3) can rotate around its central axis. Multiple equidistantly distributed roll shafts (4) are arranged on the roll changing turntable (3). The roll shafts (4) are equipped with an adaptive head fixing mechanism (5).

2. The backlight feeder stripping system according to claim 1, characterized in that: The adaptive head fixing mechanism (5) includes a base plate fixing block (50), a movable front block (51) is installed on the top of one side of the base plate fixing block (50), the movable front block (51) is provided with a plurality of preset holes, and a positioning front block (52) for positioning the head of the coil is installed on the top of the other side of the base plate fixing block (50) corresponding to the movable front block (51). One end of the head fixing block (53) is installed on the movable front block (51), and the other end of the head fixing block (53) is installed on the positioning front block (52). The head fixing block (53) is used to clamp and fix the head of the coil. The grooved block is also installed on the base plate fixing block (50), the grooved block is connected to the movable front block, and the grooved block is provided with a plurality of adjustment holes.

3. The backlight feeder stripping system according to claim 1, characterized in that: The adjustable camera module includes an adjustment fixing plate (6), a camera (2), and a camera base plate (8). The adjustment fixing plate (6) is provided with multiple adjustment holes (61). The camera (2) is mounted on the adjustment holes (61) through the camera base plate (8). A support arm (62) is installed on each side of the adjustment fixing plate (6).

4. The backlight feeder stripping system according to claim 3, characterized in that: The adjustable camera module also includes pads (63), and one pad (63) is installed on the inner side of the bottom of each support arm (62).

5. The backlight feeder stripping system according to claim 3, characterized in that: The adjustable camera module also includes a reinforcing plate (10), one end of which is installed at the end of the adjusting and fixing plate (6), and the other end of which is installed at the top of the support arm (62).

6. The backlight feeder stripping system according to claim 1, characterized in that: The bearing of the roll shaft (4) is fixed on the bracket of the feeder (1), and the roll changing turntable (3) is installed at the end of the bracket of the feeder (1); each roll shaft (4) is equipped with one of the adaptive head fixing mechanisms (5) or multiple roll shafts (4) are equipped with one adaptive head fixing mechanism (5).

7. The backlight feeder stripping system according to claim 3, characterized in that: The backlight feeder stripping system also includes an adjusting screw (7), a Y-axis adjusting fixing block (11), and a Y-axis fine-tuning screw (9). The Y-axis adjusting fixing block (11) is installed on the side of the adjusting fixing plate (6). One end of the Y-axis fine-tuning screw (9) passes through the fixing component on the feeder bracket, and the other end extends into the Y-axis adjusting fixing block (11). The adjusting screw (7) is installed on both ends of the adjusting fixing block (6). The adjusting screw (7) passes through the adjusting fixing block (6) and extends into the support arm (62).

8. The backlight feeder stripping system according to claim 1, characterized in that: The backlight feeder stripping system includes a turntable motor and a roll motor. The turntable motor drives the roll changing shaft (3) to rotate through the central rotating shaft, and the roll motor drives the roll shaft (4) to rotate for unwinding or rewinding.

9. The backlight feeder stripping system according to claim 3, characterized in that: There are two cameras (2), and each camera (2) is a 5-megapixel industrial camera.

10. A pick-and-place machine, characterized in that: Includes the backlight feeder stripping system according to any one of claims 1-9.

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