Automatic material cleaning device and braider

Abstract

The utility model relates to an automatic material cleaning device and braider, include: connecting piece, and with the connecting piece connection drive mechanism, drive mechanism drive connecting piece movement, connecting piece are equipped with material taking part, light guide mechanism and light source, light source and material taking part interval arrangement, light guide mechanism includes light guide channel, and sets up in the light guide channel both ends and goes out light area and light area, light area and light source correspond setting, light ray enters light guide channel by light area and goes out by light area, normal state time, light source and detection hole correspond setting, clear material state time, drive mechanism drives material taking part to clear material close detection hole. The utility model structure is compact, and space arrangement is more flexible, and can switch between normal state and clear material state, and control is simple.

Description

Technical Field

[0001] This utility model relates to the field of chip screening and packaging technology, and in particular to an automatic cleaning device and a tape and reel machine. Background Technology

[0002] During the processing or testing of semiconductors and electronic components, it is necessary to inspect the components to determine whether they are defective and to reject them. For example, when sorting and testing chips, the chips are usually placed onto the tape of a tape machine through the nozzle of a spindle for packaging. Before packaging, the chips are inspected again by an inspection component, and defective products are removed. Existing inspection components typically use image inspection, which uses a lens to capture images of the chip to inspect its appearance. Usually, corresponding inspection holes are set on the chip transport rail, and the lens is directly facing the inspection hole to capture the image. However, if the inspection hole location needs to accommodate a removal mechanism for defective products, there is no space to install a lens. Utility Model Content

[0003] One objective of this invention is to solve the existing technical problems and provide an automatic cleaning device and tape machine with a compact structure that can switch between detection and cleaning at the detection hole position.

[0004] To achieve the objectives of this utility model, the embodiments of this utility model adopt the following technical solutions:

[0005] An automatic material cleaning device includes: a connector and a drive mechanism connected to the connector. The drive mechanism drives the connector to move. The connector is provided with a material picking part, a light guiding mechanism and a light source. The light source and the material picking part are spaced apart. The light guiding mechanism includes a light guiding channel and light entry area and light exit area provided at both ends of the light guiding channel. The light entry area is correspondingly provided with the light source. After the light enters the light guiding channel through the light entry area, it is emitted from the light exit area. In normal state, the light source is correspondingly provided with the detection hole. In the material cleaning state, the drive mechanism drives the material picking part to approach the detection hole for material cleaning.

[0006] In some embodiments, the light source and the material handling unit are spaced apart along a first direction and move along the first direction, while the light guide channel is arranged along a third direction.

[0007] In some embodiments, the light guiding mechanism includes a main body, one end of which is connected to a connector and the other end is a free end. A light guiding channel is disposed in the main body, an incident light area is disposed below the main body, and an exit light area is disposed above the main body.

[0008] In some embodiments, a first prism and a second prism are provided at opposite ends of the light guide channel. The first prism is correspondingly arranged with the light entrance area. The light in the light entrance area is reflected by the first prism and enters the second prism. The second prism reflects the light into the light exit area. The light source is located below the light entrance area. Under normal conditions, the light source is located directly above the detection hole.

[0009] In some embodiments, the connector is provided with a negative pressure channel, which is connected to the material taking part. The connector is arranged along a first direction, and the main body is arranged along a third direction. In the cleaning state, the material taking part is driven by the driving mechanism to the detection hole, and defective products are discharged through the negative pressure channel.

[0010] In some embodiments, the driving mechanism includes a driving member and a transmission mechanism, and the material handling mechanism includes a connecting member. The driving member is connected to the connecting member through the transmission mechanism, thereby driving the material handling part to move simultaneously along a first direction and a second direction when it approaches the detection hole.

[0011] In some embodiments, the transmission mechanism includes a mounting plate with a cam groove and a cam plate connected to a drive member. The mounting plate is connected to a connector, and a cam follower is provided on the cam plate, which is disposed in the cam groove.

[0012] In some embodiments, the light guide mechanism is connected to the material handling mechanism and is mounted on a movable base. The movable base is connected to a power source to drive the movable base to move. In the maintenance state, the movable base moves away from the conveying guide rail, and the light source and the material handling part move away from the detection hole synchronously.

[0013] A tape feeding machine includes a conveyor rail with detection holes and an automatic cleaning device.

[0014] In some embodiments, the conveying guide rail is arranged along a third direction, a detection component is provided above the conveying guide rail, the detection component is arranged corresponding to the light output area, the detection component is arranged at intervals with the automatic cleaning device, and the first to third directions are perpendicular to each other.

[0015] This utility model has the following main advantages:

[0016] (1) A light guide mechanism is used to enable the detection component, which is far from the detection hole, to receive the image of the material at the detection hole position. The light source and the material handling unit are integrated and switched by a drive mechanism in the detection or cleaning state, which can make full use of space and flexibly arrange the components; (2) The material handling unit can achieve precise movement in two directions through a single drive, making the structure more compact, the control simple, and the cost reduced. Other advantages of the present invention are described in the specific embodiments. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a defective product processing device provided in Embodiment 1 of the present invention.

[0019] Figure 2 This is a schematic diagram of the conveyor rail and conveyor belt provided in Embodiment 1 of the present invention.

[0020] Figure 3 This is a schematic diagram of the packaging area on the material strip, the corresponding acupoints of the feeding hole, and the corresponding acupoints of the detection hole provided in Embodiment 1 of the present invention.

[0021] Figure 4 This is a schematic diagram of the cleaning assembly provided in Embodiment 1 of the present invention.

[0022] Figure 5 This is a side view of the cleaning assembly provided in Embodiment 1 of the present invention.

[0023] Figure 6 This is a top view of the mounting plate provided in Embodiment 1 of the present invention.

[0024] Figure 7 This is a top view of the cleaning assembly provided in Embodiment 1 of the present invention.

[0025] Figure 8 This is a top view of the light guide mechanism provided in Embodiment 1 of the present invention.

[0026] Figure 9 This is the present invention. Figure 8 A schematic diagram of the CC section.

[0027] Figure 10 This is a schematic diagram of the cover belt conveyor assembly and the material belt conveyor assembly provided in Embodiment 1 of the present invention.

[0028] Figure 11 This is a schematic diagram of the cover strap tensioning mechanism provided in Embodiment 1 of the present invention.

[0029] Figure 12 This is a schematic diagram of the material belt tensioning mechanism provided in Embodiment 1 of the present invention.

[0030] Figure 13 This is a schematic diagram of the sorting device provided in Embodiment 2 of the present invention.

[0031] Figure 14 This is a schematic diagram of the defective product handling method provided in Embodiment 3 of the present invention.

[0032] Figure 15 This is a schematic diagram of the cover belt conveying method provided in Embodiment 3 of the present invention.

[0033] Figure 16 This is a schematic diagram of the material conveying method provided in Embodiment 3 of the present invention.

[0034] In the attached diagram: 10. Material strip; 11. Hole; 100. Conveying guide rail; 101. Encapsulation area; 110. Feed hole; 120. Detection hole; 200. Detection component; 210. Lens; 300. Cleaning component; 310. Picking part; 320. Negative pressure channel; 330. Driving component; 331. Driving rod; 340. Transmission mechanism; 341. Cam groove; 342. Mounting plate; 343. Cam plate; 344. Cam follower; 345. Z-axis guide rail; 346. X-axis guide rail; 347. Spring; 360. Light source; 370. Light guiding mechanism; 371. Light input area; 372. Light output area; 373. Light guiding channel; 3 81. Movable seat; 382. Guide rail; 390. Power source; 391. Push-pull rod; 392. Floating joint; 400. Power assembly; 410. Pin wheel; 420. Third motor; 500. Feeding assembly; 600. Packaging assembly; 700. Cover tape conveyor assembly; 710. First motor; 720. Cover tape tensioning mechanism; 721. First sensor; 722. Paddle; 723. Sensing area; 800. Belt conveyor assembly; 810. Second motor; 820. Belt tensioning mechanism; 821. Swing rod; 822. Second sensor; 823. Elastic element; 824. Sensing area; 830. Rewinding wheel; 840. Guide rail. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0036] In this embodiment, "several" and "more than" refer to two or more. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] <Example 1>

[0039] This embodiment provides a defective product handling device for processing components such as chips and semiconductor devices. It can inspect the components and remove defective products. Taking a tape and reel machine as an example, which is used to encapsulate chips in tape, the defective product handling device can identify and remove defective products before encapsulation, preventing defective products from being encapsulated into the tape.

[0040] like Figures 1 to 7As shown, the defective product handling device of this embodiment includes: a conveyor rail 100, a detection component 200, a cleaning component 300, and a power component 400. The detection component 200, the cleaning component 300, and the power component 400 are respectively connected to a control module, and their coordinated operation is controlled by the control module. The conveyor rail 100 is used to convey the material belt 10, which is made of a strip of flexible material and has a plurality of cavities 11 for accommodating materials. The conveyor rail 100 is a linear guide rail, and the material belt 10 moves linearly in the conveyor rail 100. The conveyor rail 100 includes an inlet hole 110 for placing materials. The inlet hole 110 is correspondingly provided with a dispensing component 500. The dispensing component 500 moves downward to throw the materials to be placed in the material belt 10 toward the inlet hole 110, so that the materials enter the cavities of the material belt through the inlet hole 110. In this embodiment, the dispensing component 500 is a suction nozzle. The movement of the conveyor belt in the conveyor rail 100 is driven by the power component 400. Each time the feeding component 500 inserts a component, the power component 400 causes the conveyor belt to advance one step. The conveyor rail 100 is also provided with a detection hole 120, spaced apart from the feed hole 110. The detection hole 120 is located downstream of the feed hole 110. Components in the feed hole 110 move to the detection hole 120 after several steps. The detection component 200 is used to detect the components in the detection hole 120. When a component moves to the detection hole 120, the detection component 200, positioned above the conveyor rail, can determine whether it is a defective product through an image. The spaced-apart arrangement of the detection hole 120 and the feed hole 110 allows the detection hole 120 to be located away from the feeding component 500, facilitating the arrangement of the detection component. In this embodiment, the detection hole 120 and the feed hole 110 are through holes, communicating with the conveyor belt. This allows components to enter or exit the conveyor belt cavity through the through holes, and also allows for the detection of components in the cavity. The cleaning assembly 300 is an automatic cleaning device used to remove defective products. The cleaning assembly 300 is positioned at the detection hole 120. If the detection assembly 200 detects a defective product, the cleaning assembly 300 removes it. The cleaning assembly 300 and the dispensing assembly 500 are spaced apart. The independently positioned cleaning assembly 300 can directly remove defective products from the detection hole, resulting in high removal efficiency. Furthermore, it eliminates the need for the dispensing assembly 500 to remove defective products; the dispensing assembly 500 only dispenses materials and does not need to retrieve them, simplifying the control logic. The cleaning assembly 300 includes a drive mechanism and a picking mechanism connected to the drive mechanism. The drive mechanism drives the picking mechanism to move closer to or further away from the detection hole. Under normal conditions, the picking mechanism is away from the detection hole to avoid interfering with the detection assembly 200's detection. In the cleaning state, the picking mechanism approaches the detection hole 120 to pick up the material. That is, the picking mechanism can fit with or maintain a certain gap with the detection hole 120. As long as the picking mechanism can pick up the material, the defective products can be directly removed by the picking mechanism without having to remove the defective products by the feeding component 500.

[0041] like Figure 2 and Figure 3 As shown, further, after the cleaning component 300 removes defective products, the material strip becomes an empty cavity in the corresponding position of the detection hole, which needs to be filled with a new material. Therefore, the defective product handling device enters the retraction state, and the power component 400 drives the empty cavity of the material strip 10 to retract from the detection hole 120 to the inlet hole 110, and then a new material is put in through the discharging component 500. Downstream of the detection hole 120, there is a sealing component 600 to seal the material strip 10 to form a sealing area 101. The sealing component 600 can be an existing thermoforming sealing component or other sealing component, used to seal the material strip 10. After the material is sealed in the cavity 11, it moves downstream, and the downstream of the sealing component 600 is the sealing area 101. The distance S between the acupoint corresponding to the detection hole 120 and the preceding acupoint in the encapsulation area 101 is greater than the distance K between the acupoint corresponding to the detection hole 120 and the corresponding acupoint in the feed hole 110. This ensures that when the empty acupoint retracts to the feed hole 110, there is a sufficiently long distance in front of the empty acupoint, preventing damage to the encapsulation material strip in the encapsulation area 101 during retraction. Distance S is the distance between the acupoint corresponding to the detection hole 120 and the first upstream acupoint in the encapsulation area 101. Specifically, under normal conditions, the material strip moves in the forward direction, the component is placed into the acupoint 11a corresponding to the feed hole 110, and the acupoint 11b corresponding to the detection hole 120 is used for detection. The distance between acupoints 11a and 11b is K, and the distance between acupoint 11b and the preceding acupoint in the encapsulation area 101 is S. If the material in cavity 11b is defective, it is removed by the cleaning component 300 to form an empty cavity. Cavity 11b then retracts to the position of cavity 11a. During the retraction, the material belt moves in the retraction direction.

[0042] Specifically, the material handling mechanism includes a material handling section 310 and a negative pressure channel 320 connected to the material handling section 310. The material handling section 310 is used to handle the material, and the negative pressure channel 320 is connected to an external negative pressure device to introduce negative pressure, through which the material is discharged. In normal operation, the material handling section 310 is spaced apart from the detection hole 120 to avoid affecting the detection of the detection hole 120. In the cleaning state, the material handling section 310 is driven by a drive mechanism onto the detection hole 120, and defective products are discharged through the negative pressure channel 320. The material handling section 310 is annular and has a downward-facing opening connected to the negative pressure channel 320. During cleaning, the material handling section approaches the detection hole 120 through the opening, and the negative pressure of the opening draws the defective product from the cavity into the negative pressure channel 320. Through this technical solution, defective products can be quickly removed, and after removal, the material handling section 310 is reset to a position away from the detection hole 120. The driving mechanism includes a driving component 330 and a transmission mechanism 340, and the material handling mechanism includes a connecting component 350. The driving component 330 is connected to the connecting component 350 through the transmission mechanism 340, driving the material handling part 310 to move simultaneously along a first direction X and a second direction Z when it approaches the detection hole 120. The first direction X is horizontal, and the second direction Z is vertical, and the first and second directions are perpendicular to each other. The driving component 330 can be a power component such as a cylinder. The driving component 330 provides power so that the material handling part 310 can move simultaneously along the first and second directions, making it quickly approach and move away from the detection hole 120. It also enables the material handling part 310 to advance to above the detection hole 120 and fit tightly against the conveying guide rail, avoiding air leakage during negative pressure adsorption. Specifically, the transmission mechanism 340 includes a mounting plate 342 with a cam groove 341 and a cam plate 343 connected to the drive member 330. The mounting plate 342 is connected to the connector 350. A cam follower 344 is provided on the cam plate 343 and is disposed in the cam groove 341. In normal state, the drive rod 331 of the drive member 330 retracts. When material needs to be cleared, the drive rod 331 of the drive member 330 extends towards the conveying guide rail 100 in the first direction X. The cam plate 343 drives the cam follower 344 to roll relative to the cam groove 341. In this embodiment, the cam groove 341 is a straight groove arranged obliquely. The trajectory of the cam groove 341 is not limited to the constant velocity (linear) motion trajectory shown in the figure. It can also be set to a modified sine motion trajectory, a constant acceleration (parabolic) motion trajectory, a cosine acceleration (simple harmonic) motion trajectory, etc., according to the operating conditions of the equipment. The cam follower 344 drives the mounting plate 342 to move along the first and second directions, and the connecting member 350 and the material picking part 310 move synchronously, so that the material picking part 310 can fit tightly against the detection hole 120 and the conveying guide rail 100. The mounting plate 342 is set on the Z-axis guide rail 345, and the Z-axis guide rail 345 is set on the X-axis guide rail 346. The Z-axis guide rail 345 and the X-axis guide rail 346 are perpendicular to each other, so that the mounting plate 342 can move simultaneously along the first direction X and the second direction Z.The mounting plate 342 is connected to the spring 347. When the drive rod 331 extends, the mounting plate 342 moves and the spring 347 is stretched. When the drive rod 331 retracts, the elastic force of the spring enables the mounting plate 342 to return to its original position more effectively.

[0043] like Figure 4 , Figure 5 , Figure 8 and Figure 9 As shown, the cleaning assembly 300 further includes a light source 360 ​​and a light guide mechanism 370. The light source 360 ​​and the material handling part 310 are spaced apart on the connector 350 along the first direction X. In normal state, the light source 360 ​​is correspondingly arranged with the detection hole 120, so that the light emitted by the light source can enter through the detection hole 120 and illuminate the material strip. The light guide mechanism 370 includes a light guide channel 373. One end of the light guide channel 373 is provided with an entrance light area 371 and the other end is provided with an exit light area 372. The entrance light area 371 and the exit light area 372 are respectively corresponding to the light source 360 ​​and the detection assembly 200. The light emitted by the light source 360 ​​is reflected and passes through the entrance light area 371, passes through the light guide channel 373, and is emitted from the exit light area 372 before entering the lens 210 of the detection assembly 200. Through the above technical solution, the lens 210 does not need to be positioned directly above the detection hole 120. The light guide mechanism 370 allows the lens to acquire images of the workpiece, facilitating flexible arrangement of the space above the detection hole 120. The connector 350 is driven by a drive mechanism and includes a material-taking section 310, a light guide mechanism 370, and a light source 360, enabling it to move synchronously with the connector 350. In normal operation, the light source 360 ​​is positioned directly above the detection hole 120, illuminating the workpiece within the detection hole 120. This allows the image of the workpiece to pass through the light entrance area 371, the light guide channel 373, and the light exit area 372 into the lens 210, thus determining whether the workpiece is defective. In the cleaning state, the drive mechanism drives the material-taking section 310 to approach the detection hole 120 for cleaning. Specifically, the material-taking section 310 presses against the detection hole 120, and the control module controls the solenoid valve of the negative pressure channel to activate, introducing a vacuum and discharging defective products through the negative pressure channel 320.

[0044] Furthermore, the light source 360 ​​and the material-taking part 310 are spaced apart along the first direction X and move along the first direction, while the light guide channel 373 is arranged along the third direction Y. The light guide channel 373 is arranged parallel to the conveying guide rail 100, and the first to third directions are perpendicular to each other. The moving direction of the light source 360 ​​and the material-taking part 310 is perpendicular to the conveying guide rail 100, enabling the light source 360 ​​and the material-taking part 310 to quickly switch their relative positions with the detection hole 120. During the position switching process, the light guide mechanism moves synchronously. The light guide channel 373 allows the detection component to be spaced apart from the cleaning component 300, and the movement of the cleaning component 300 will not affect the detection component, making the spatial arrangement more flexible. Specifically, the light guide mechanism 370 includes a main body 376, one end of which is connected to the connector 350, and the other end is a free end. The main body 376 is strip-shaped and is arranged perpendicular to the connector. A light guide channel 373 is disposed within the main body 376. An input light area 371 is located below the main body 376, and an output light area 372 is located above the main body 376. Light enters from below the main body 376 and exits from above. The input light area 371 receives light, and the output light area outputs light. The input and output light areas can be holes in the main body. A first prism 374 and a second prism 375 are positioned opposite each other at both ends of the light guide channel 373. The first prism 374 corresponds to the input light area 371. Light from the input light area 371 is reflected by the first prism 374 into the second prism 375, which then reflects the light into the output light area 372. The first and second prisms are tilted to change the light path. The light source 360 ​​is coaxially positioned with the input light area and the cavity in the material strip.

[0045] Furthermore, the light guide mechanism 370 is connected to the material handling mechanism and mounted on the movable seat 381. The movable seat 381 is connected to the power source 390 to drive its movement. The power source 390 can be a single or combined power device, such as a cylinder or a telescopic push rod. When material jamming or other situations requiring manual cleaning occur, the system enters a maintenance state. The movable seat moves away from the conveyor rail 100, and the light source 360 ​​and the material handling part 310 simultaneously move away from the detection hole 120. When the material in the detection hole 120 becomes stuck, manual maintenance is required. Since the light source 360 ​​or the material handling part 310 are directly above the detection hole 120 during normal operation or cleaning, it is inconvenient for manual observation and operation. Therefore, the light source 360 ​​and the material handling part 310 above the detection hole 120 need to be moved as a whole to one side of the conveyor rail 100. At this time, the cover plate and other parts of the conveyor rail can be opened for cleaning and maintenance. By moving the movable seat 381, the cleaning assembly 300 can be moved as a whole, preventing the detection hole 120 from being blocked. Specifically, under normal conditions, the push-pull rod 391 of the power source 390 is in the extended state, and the push-pull rod 391 is connected to the movable seat 381 through the floating joint 392. The movable seat 381 is mounted on the guide rail 382, ​​allowing it to slide smoothly. When maintenance is required, the push-pull rod 391 retracts, moving the cleaning assembly on the movable seat 381 away from the conveying guide rail.

[0046] like Figures 10 to 12As shown, further downstream of the detection hole 120, a cover belt conveyor assembly 700 and a material belt conveyor assembly 800 are also provided. The cover belt conveyor assembly 700 includes a first motor 710 and a cover belt tensioning mechanism 720. Both the first motor 710 and the cover belt tensioning mechanism 720 are connected to the control module. The cover belt enters the conveyor guide rail 100 through the cover belt tensioning mechanism 720. The cover belt is a strip-shaped piece that covers the material belt and is used to seal the material belt. Since the tension of the cover belt will change during the conveying process, being too loose or too tight will affect the conveying of the cover belt, so it is necessary to control its tension. When the cover belt tension is too high, the cover belt tensioning mechanism 720 sends a signal to the control module, and the control module controls the first motor 710 to rotate forward, quickly releasing the cover belt and reducing the cover belt tension. The conveyor belt assembly 800 includes a second motor 810 and a conveyor belt tensioning mechanism 820. The second motor 810 drives a take-up reel 830. The conveyor belt passes through the tensioning mechanism 820, passes through a guide rail 840, and is wound around the take-up reel 830. The power assembly 400 includes a pin wheel 410 and a third motor 420 that drives the pin wheel 410. The pin wheel 410 is connected to the conveyor belt, and the third motor 420 drives the pin wheel 410 to rotate, thereby moving the conveyor belt 10. In normal operation, both the conveyor belt and the cover belt move in the forward direction, and the cover belt and the conveyor belt are sealed together by the encapsulation assembly 600. The cover belt tensioning mechanism 720 triggers the first motor 710 to rotate intermittently in the forward direction according to the cover belt tension. By intermittently rotating the first motor 710 in the forward direction through the cover belt tensioning mechanism 720, a continuous and appropriate amount of material is supplied, keeping the cover belt in a slightly tensioned state to prevent it from deviating from its trajectory. The belt tensioning mechanism 820 triggers the second motor 810 to rotate intermittently forward according to the belt tension, achieving continuous tensioning and material collection. The belt is limited and guided by the conveyor track 100. In the retraction state, the first to third motors reverse at a uniform speed, thereby causing the belt to retract.

[0047] like Figure 15 and Figure 16As shown, specifically, the cover tape tensioning mechanism 720 includes a first sensor 721 and a corresponding lever 722. The lever 722 pivots under the force of the cover tape. When the lever 722 is in the sensing area 723 of the first sensor 721, the first motor 710 rotates intermittently in the forward direction, that is, the first motor 710 rotates for a certain period of time, for example, 1 second, and then stops, allowing the cover tape to release a certain length. When the lever 722 leaves the sensing area 723 of the first sensor 721, the first motor stops. As the cover tape advances, after a certain period of time, the cover tape causes the lever 722 to return to the sensing area 723, thereby continuously feeding material in a cycle. The material tape tensioning mechanism 820 includes a second sensor 822 and a corresponding rocker arm 821. The rocker arm 821 is connected to the elastic element 823 and pivots under the pressure of the material tape. When the swing arm 821 is located in the sensing area 824 of the second sensor 822, the second motor 810 rotates intermittently forward, for example, rotating for 1 second, tensioning the material belt. When the pressure after the material belt is tensioned causes the swing arm 821 to rotate counterclockwise, and the swing arm 821 disengages from the sensing area 824 of the second sensor 822, the second motor stops. Since the needle wheel is maintaining the forward drive of the material belt, the tension of the material belt decreases after the second motor stops, and the elastic element 823 causes the swing arm 821 to return to the sensing area 824 of the second sensor 822, thus intermittently taking in material in a cycle. When rewinding, neither the first nor the second motor is triggered by the sensor, but instead rotates in reverse at a constant speed according to the speed of the third motor, thus cooperating with the third motor to complete the rewinding.

[0048] <Example 2>

[0049] In this embodiment, the parts that are the same as in Embodiment 1 are given the same reference numerals, and the same text descriptions are omitted.

[0050] like Figure 13 As shown, compared to Embodiment 1, this embodiment provides a sorting device for sorting electronic components such as chips, including a turret 1 driven by a motor to rotate. The turret 1 is equipped with a feeding assembly 500 for adsorbing and releasing materials. Several workstations 2 are provided around the turret 1 to install different functional modules, realizing functions such as feeding, detection, sorting, and unloading. At least one workstation is equipped with a defective product handling device. The feeding assembly 500 is located above the inlet hole 110, and the feeding assembly 500 feeds the materials into the inlet hole 110.

[0051] <Example 3>

[0052] In this embodiment, the parts that are the same as in Embodiment 1 are given the same reference numerals, and the same text descriptions are omitted.

[0053] like Figure 14As shown, compared to Embodiments 1 and 2, this embodiment provides a method for handling defective products, in which defective products are discharged and replenished by a defective product handling device. In normal operation, the feeding assembly 500 places the material into the slot of the conveyor belt through the feeding hole 110. The conveyor belt is driven to move in the forward direction by the power assembly 400. The cover belt tensioning mechanism 720 and the conveyor belt tensioning mechanism 820 trigger the first motor 710 and the second motor 720 to rotate intermittently according to the tension of the cover belt and the conveyor belt, thereby achieving continuous tensioning and feeding. The material moves from the feeding hole 110 to the detection hole 120. The detection assembly 200 detects the material in the detection hole 120 on the conveyor guide rail 100. If the material passes the appearance inspection, operation continues in normal operation. If the material is defective, a cleaning process is executed, including the following steps:

[0054] S100: The drive mechanism drives the material-picking mechanism to approach the detection hole 120 to pick up the material. The material is taken from the conveyor belt through the detection hole 120 to form a cavity. Specifically, the picking part 310 of the material-picking mechanism moves simultaneously along the first direction X and the second direction Z to approach the detection hole 120. The picking part 310 fits against the conveyor guide rail 100 and covers the detection hole 120. Negative pressure is introduced through the picking part 310 to suck the material out of the cavity through the detection hole 120.

[0055] S200, the power assembly 400 drives the material belt to retract, causing the cavities to move from the detection hole 120 to the inlet hole 110, facilitating refeeding using the unloading assembly 500. Specifically, the third motor 420 of the power assembly 400 rotates in the reverse direction, causing the material belt to retract. Simultaneously, the first motor 710 of the cover tape conveyor assembly and the second motor 810 of the material belt conveyor assembly rotate in opposite directions at a constant speed, allowing the cavities on the material belt to retract to the inlet hole 110. During the material belt retraction, the first and second motors rotate in reverse at a constant speed to rewind the cover tape and the material belt. The material belt is sealed in the encapsulation area 101 by the encapsulation assembly 600. The distance S between the cavity corresponding to the detection hole 120 and the previous cavity in the encapsulation area 101 is greater than the distance K between the cavity corresponding to the detection hole 120 and the cavity corresponding to the inlet hole 110, preventing damage to the already sealed cavities during retraction. See the following for the conveying method of the cover tape and the material belt. Figure 15 and Figure 16 As shown.

[0056] S300, the feeding assembly 500 places the new material into the cavity, the feeding assembly 500 moves down close to the feed hole 110, and then releases the adsorbed material, allowing it to enter the cavity through the feed hole 110 to fill the missing material.

[0057] S400, the power unit 400 drives the conveyor belt forward. The new material moves from the feed hole 110 to the detection hole 120. Then, step S100 is executed to check whether the new material is defective. If it is defective, steps S300 to S400 are executed. If it is qualified, it enters the normal state.

[0058] In the above embodiments one to three, during the working process, depending on the different working environments, some of the technical implementation methods of embodiments one to three can be combined or replaced.

[0059] The technical principles of this utility model have been described above in conjunction with specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, other specific embodiments or equivalent substitutions of this utility model that can be conceived by those skilled in the art without creative effort will all fall within the scope of protection of this utility model.

Claims

1. An automatic material cleaning device, characterized in that, include: The connector and the drive mechanism connected to the connector drive the connector to move. The connector is provided with a material picking part, a light guiding mechanism and a light source. The light source and the material picking part are spaced apart. The light guiding mechanism includes a light guiding channel and light entry area and light exit area set at both ends of the light guiding channel. The light entry area is set correspondingly to the light source. After the light enters the light guiding channel through the light entry area, it is emitted from the light exit area. In normal state, the light source is set correspondingly to the detection hole. In the cleaning state, the drive mechanism drives the material picking part to approach the detection hole to clean the material.

2. The automatic cleaning device according to claim 1, characterized in that, The light source and the material handling unit are spaced apart along a first direction and move along the first direction, while the light guide channel is arranged along a third direction.

3. The automatic cleaning device according to claim 1, characterized in that, The light guiding mechanism includes a main body, one end of which is connected to a connector, and the other end is a free end. The light guiding channel is located in the main body, the light input area is located below the main body, and the light output area is located above the main body.

4. The automatic cleaning device according to claim 3, characterized in that, The light guide channel is provided with a first prism and a second prism at both ends. The first prism is set in relation to the light entrance area. The light in the light entrance area is reflected by the first prism and enters the second prism. The second prism reflects the light into the light exit area. The light source is located below the light entrance area. Under normal conditions, the light source is located directly above the detection hole.

5. The automatic cleaning device according to claim 4, characterized in that, The connector is provided with a negative pressure channel, which is connected to the material taking part. The connector is arranged along the first direction, and the main body is arranged along the third direction. In the cleaning state, the material taking part is driven by the driving mechanism to the detection hole, and defective products are discharged through the negative pressure channel.

6. The automatic cleaning device according to claim 1, characterized in that, The driving mechanism includes a driving component and a transmission mechanism, and the material handling mechanism includes a connecting component. The driving component is connected to the connecting component through the transmission mechanism, and drives the material handling part to move simultaneously along the first direction and the second direction when it approaches the detection hole.

7. The automatic cleaning device according to claim 6, characterized in that, The transmission mechanism includes a mounting plate with a cam groove and a cam plate connected to the driving component. The mounting plate is connected to the connecting component, and a cam follower is provided on the cam plate, which is disposed in the cam groove.

8. The automatic cleaning device according to claim 1, characterized in that, The light guide mechanism is connected to the material handling mechanism and is mounted on the movable seat. The movable seat is connected to the power source and drives the movable seat to move. In the maintenance state, the movable seat moves away from the conveying guide rail, and the light source and the material handling part move away from the detection hole simultaneously.

9. A tape and reel machine, comprising a conveyor rail, wherein the conveyor rail is provided with a detection hole, characterized in that, The conveyor rail is equipped with the automatic cleaning device as described in any one of claims 1 to 8.

10. The tape and reel machine according to claim 9, characterized in that, The conveying guide rail is arranged along the third direction, and a detection component is provided above the conveying guide rail. The detection component is arranged corresponding to the light output area and is arranged at intervals with the automatic cleaning device. The first to third directions are perpendicular to each other.

Images