Chip positioning method

Abstract

The invention relates to a semiconductor testing process, in particular to a chip positioning method, which comprises the following steps of: placing a plastic plate on a positioning area between tracks, and placing a chip on the top of the plastic plate; the power supply module drives the first electromagnetic valve to control the positioning cylinder to hook and limit the plastic plate; after the plastic plate is hooked and limited by the positioning cylinder, the power supply module drives the time relay to operate, and the time relay intermittently controls the second electromagnetic valve to drive the pneumatic vibrator to vibrate, so that the chip falls into a positioning groove of the plastic plate after being vibrated; wherein an exhaust pipe of the pneumatic vibrator penetrates through a top plate of the rack and leads to the bottom of the rack, and in the intermittent vibration process of the pneumatic vibrator, the exhaust pipe intermittently exhausts waste gas to the bottom of the rack; and after the chip falls into the positioning groove of the plastic plate, the limiting is released and the plastic plate is driven to leave the positioning area. By means of intervention of the positioning air cylinder, unstable factors caused by related defects of electric control are avoided, and the exhaust problem of the positioning air cylinder is also solved.

Description

Technical Field

[0001] The invention relates to a semiconductor testing process, and in particular to a chip positioning method. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and does not constitute prior art.

[0003] During the chip processing process, it is usually necessary to use an IC sorting machine to sort, locate, and test the chips in batches to meet factory requirements.

[0004] In the process of positioning the chips, the existing sorting machines generally use an auxiliary oscillator module with an electric eccentric motor oscillation function, so that the chips fall into the designated positioning slots after being vibrated. However, during use, the circuits, motors, power supply boards and other electric control components will age due to long-term use, affecting the operating frequency and amplitude of the electric eccentric motor, resulting in abnormal problems such as inconsistent speeds before and after the electric eccentric motor, inability to unify the electric control adjustment, and aging and burning of the motor coil, resulting in positioning failure and affecting chip production efficiency.

[0005] Currently, there is no chip positioning method that can solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a chip positioning method, which can avoid the unstable factors caused by the disadvantages of electronic control through the intervention of the positioning cylinder, and solve the exhaust problem of the positioning cylinder by optimizing the layout of the rack.

[0007] In order to achieve the above-mentioned object, the present invention discloses the following chip positioning method, which is used to position a chip in a positioning groove of a plastic plate; the chip positioning method comprises: Providing a rack, wherein the top plate of the rack is provided with rails, placing the plastic plate on the positioning area between the rails, and placing the chip on the top of the plastic plate; A positioning cylinder, a first solenoid valve and a power module are provided, wherein the positioning cylinder is arranged between the rails and at the edge of the positioning area, the positioning cylinder is connected to the first solenoid valve, and the first solenoid valve is connected to the power module; the power module drives the first solenoid valve to control the positioning cylinder to hook the plastic plate tightly and limit it; A pneumatic vibrator, a second solenoid valve and a time relay are provided, wherein the pneumatic vibrator is attached to one side of the track, the pneumatic vibrator is connected to the second solenoid valve, the second solenoid valve is connected to the time relay, and the time relay is connected to the power module; after the plastic plate is hooked and limited by the positioning cylinder, the power module drives the time relay to operate, and the time relay intermittently controls the second solenoid valve to drive the pneumatic vibrator to vibrate, so that the chip falls into the positioning groove of the plastic plate after being vibrated; wherein the exhaust pipe of the pneumatic vibrator passes through the top plate of the frame and leads to the bottom of the frame, and during the intermittent vibration of the pneumatic vibrator, the exhaust pipe intermittently discharges exhaust gas to the bottom of the frame; After the chip falls into the positioning groove of the plastic plate, the power module drives the first solenoid valve to control the positioning cylinder to release the hook limit on the plastic plate, and then the track starts to operate and drives the plastic plate carrying the chip to leave the positioning area.

[0008] Furthermore, an air flow regulating valve and an air pressure regulating valve are provided, the second solenoid valve is connected to the air flow regulating valve, the air flow regulating valve is connected to the air pressure regulating valve, and the air pressure regulating valve is connected to an external air source. In the step of "after the plastic plate is hooked and limited by the positioning cylinder, the power module drives the time relay to operate, and the time relay intermittently controls the second solenoid valve to drive the pneumatic vibrator to vibrate, so that the chip falls into the positioning groove of the plastic plate after being vibrated", the air pressure regulating valve stabilizes the air flow provided by the external air source to a preset air pressure and passes it to the air flow regulating valve, and the air flow regulating valve intermittently provides air flow to the pneumatic vibrator according to the opening and closing of the second solenoid valve.

[0009] Furthermore, the air pressure regulating valve, the air flow regulating valve and the air source are arranged at the bottom of the rack.

[0010] Furthermore, an exhaust fan is provided, which is arranged at the bottom of the rack. During the step of "after the plastic plate is hooked and limited by the positioning cylinder, the power module drives the time relay to operate, and the time relay intermittently controls the second solenoid valve to drive the pneumatic vibrator to vibrate, so that the chip falls into the positioning groove of the plastic plate after being vibrated", the exhaust fan is started to blow air toward one side of the exhaust pipe of the pneumatic vibrator, so that the airflow discharged from the exhaust pipe of the pneumatic vibrator is discharged to the outside of the rack by the exhaust fan.

[0011] Furthermore, there are multiple chips. During the step of "placing the plastic plate on the positioning area between the rails and placing the chip on the top of the plastic plate", the number of chips is counted while placing the multiple chips. When a preset number of chips all fall into the positioning groove of the plastic plate, the step of "the power module drives the first solenoid valve to control the positioning cylinder to release the hook limit on the plastic plate, and then the rail starts to run and drives the plastic plate carrying the chip to leave the positioning area" is executed.

[0012] Furthermore, the first solenoid valve, the power module, the second solenoid valve and the time relay are arranged on the same side of the bottom of the rack.

[0013] Further, in the step of "after the plastic plate is hooked and limited by the positioning cylinder, the power module drives the time relay to operate, and the time relay intermittently controls the second solenoid valve to drive the pneumatic vibrator to vibrate, so that the chip falls into the positioning groove of the plastic plate after being vibrated", the pneumatic vibrator vibrates in a regular cycle of vibrating for one second and stopping for five seconds.

[0014] The present invention also discloses a chip positioning system, which can position the chip in the positioning groove of the plastic plate through the above-mentioned chip positioning method, and is characterized in that the chip positioning system includes: a frame, a track, a positioning cylinder and a pneumatic vibrator arranged on the top plate of the frame, and a first solenoid valve, a power module, a second solenoid valve and a time relay arranged at the bottom of the frame.

[0015] By means of the above technical solution, the beneficial effects of the present invention are as follows: 1. The chip positioning method of the present invention can replace the auxiliary oscillator module of the existing electric-controlled eccentric motor oscillation function through the intervention of the positioning cylinder. At the same time, with the help of the layout optimization of the frame, the exhaust problem of the positioning cylinder is solved, the service life is extended, and it has the characteristics of low cost and high precision.

[0016] 2. The power module in the chip positioning method of the present invention synchronously drives the first solenoid valve and the second solenoid valve to operate in coordination and linkage, uses the first positioning cylinder to roughly position the plastic plate, and then uses the second pneumatic vibrator to accurately position the chip. After the positioning is completed, the pneumatic vibrator and the positioning cylinder stop working synchronously, which has high operating efficiency.

[0017] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a static schematic diagram of a chip positioning method provided in an embodiment of this specification; Figure 2 It is a positioning schematic diagram of a chip positioning method provided in an embodiment of this specification; In the figure: 1. rack; 11. track; 12. positioning area; 2. positioning cylinder; 3. first solenoid valve; 4. power module; 5. pneumatic vibrator; 51. exhaust pipe; 6. second solenoid valve; 7. time relay; 8. air pressure regulating valve; 9. air flow regulating valve. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0021] The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual sizes. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0022] It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or more combinations of the associated listed items depending on the actual situation.

[0023] See also Figure 1-2 , is a chip positioning method of this embodiment, used to position the chip into the positioning groove of the plastic plate; wherein the chip positioning method includes: A rack 1 is provided, a rail 11 is provided on the top plate of the rack 1, a plastic plate is placed on a positioning area 12 between the rails 11, and a chip is placed on the top of the plastic plate; A positioning cylinder 2, a first solenoid valve 3 and a power module 4 are provided. The positioning cylinder 2 is arranged between the rails 11 and at the edge of the positioning area 12. The positioning cylinder 2 is connected to the first solenoid valve 3, and the first solenoid valve 3 is connected to the power module 4. The power module 4 drives the first solenoid valve 3 to control the positioning cylinder 2 to hook the plastic plate tightly and limit it. A pneumatic vibrator 5, a second solenoid valve 6 and a time relay 7 are provided. The pneumatic vibrator 5 is attached to one side of the track 11, the pneumatic vibrator 5 is connected to the second solenoid valve 6, the second solenoid valve 6 is connected to the time relay 7, and the time relay 7 is connected to the power module 4; after the plastic plate is hooked and limited by the positioning cylinder 2, the power module 4 drives the time relay 7 to operate, and the time relay 7 intermittently controls the second solenoid valve 6 to drive the pneumatic vibrator 5 to vibrate, so that the chip falls into the positioning groove of the plastic plate after being vibrated; wherein, the exhaust pipe 51 of the pneumatic vibrator 5 is passed through the top plate of the frame 1 and leads to the bottom of the frame 1, and during the intermittent vibration of the pneumatic vibrator 5, the exhaust pipe 51 intermittently discharges exhaust gas to the bottom of the frame 1; After the chip falls into the positioning groove of the plastic plate, the power module 4 drives the first solenoid valve 3 to control the positioning cylinder 2 to release the hook limit on the plastic plate, and then the track 11 starts to operate and drives the plastic plate carrying the chip to leave the positioning area 12.

[0024] In the above process, the robot arm is first controlled to place the plastic plate on the positioning area 12 of the track 11, and the chip to be positioned is preliminarily placed at the top of the plastic plate as close to the positioning groove as possible. Specifically, the above-mentioned motion control of the robot arm is realized by software automation in this embodiment. Then, the power module 4 is first started and finally drives the positioning cylinder 2 to preliminarily pre-position and limit the plastic plate with the chip placed. Specifically, the output end of the positioning cylinder is set as a retractable and rotatable support arm structure. Before the plastic plate is placed in place, the support arm is in a horizontally placed extended state. After the plastic plate is placed in place, the support arm is rotated and lifted and is in a vertical state, and retracted, so that the plastic plate carrying the chip is hooked and limited by the support arm, and is in a state where it cannot move forward and backward along the track 11. In fact, in this embodiment, the track 11 itself also limits the plastic plate in the left and right directions. That is to say, under the common limit of the positioning cylinder 2 and the track 11, the plastic plate is in a relatively stable limit state. Then, the pneumatic vibrator 5 starts to vibrate. Specifically, the pneumatic vibrator 5 in this embodiment is arranged on one side of the track 11, and is fitted to the track 11 area near the middle position of the positioning area 12, so that the track 11 has a more balanced and stable vibration force transmission effect on the plastic plate placed thereon. In the process of the second solenoid valve 6 controlling the pneumatic vibrator 5, the exhaust pipe 51 connected to the pneumatic vibrator 5 passes through the top plate of the frame 1 and is arranged toward the open area at the bottom of the frame 1, so that the exhaust gas discharged by the pneumatic vibrator 5 will not affect other structures in the system. After the positioning is completed, the power module 4 controls the first solenoid valve 3 to make the positioning cylinder 2 release the limit on the plastic plate, and controls the second solenoid valve 6 to stop the pneumatic vibrator 5 from vibrating, so as to facilitate the next step of chip detection and other procedures.

[0025] Through the above method, based on a power module 4 as the control center, the first electromagnetic valve 3 is linked to drive the positioning cylinder 2 to perform the first positioning of the plastic plate, and the second electromagnetic valve 6 is linked to drive the pneumatic vibrator 5 to vibrate the plastic plate. The two steps are performed in sequence, which significantly improves the positioning efficiency. At the same time, with the combination of the pneumatic vibrator 5 and the time relay 7 of this embodiment, the repeated intermittent vibration positioning of the chip on the plastic plate by the pneumatic device is realized, replacing the auxiliary oscillator module of the traditional electric control eccentric motor oscillation function, avoiding the unstable factors caused by the drawbacks of the electric control, and optimizing the exhaust gas exhaust method to achieve full utilization of the pneumatic vibrator 5 with lower cost and more stable vibration effect.

[0026] Further, an air pressure regulating valve 8 and an air flow regulating valve 9 are provided, the second solenoid valve 6 is connected to the air flow regulating valve 9, the air flow regulating valve 9 is connected to the air pressure regulating valve 8, and the air pressure regulating valve 8 is connected to an external air source. In the step "after the plastic plate is hooked and limited by the positioning cylinder 2, the power module 4 drives the time relay 7 to operate, and the time relay 7 intermittently controls the second solenoid valve 6 to drive the pneumatic vibrator 5 to vibrate, so that the chip falls into the positioning groove of the plastic plate after being vibrated", the air pressure regulating valve 8 stabilizes the air flow provided by the external air source to a preset air pressure and leads to the air flow regulating valve 9, and the air flow regulating valve 9 intermittently provides air flow to the pneumatic vibrator 5 according to the opening and closing of the second solenoid valve 6. In the above process, the air pressure regulating valve 8 mainly plays the role of regulating and stabilizing the air pressure in the system to ensure that the air pressure introduced by the air source is within the set range, while the air flow regulating valve 9 is mainly linked with the second solenoid valve 6 to control the transportation of the air flow and control the rate at which the air flow passes through the pipeline to achieve precise vibration control of the pneumatic vibrator 5. Specifically, in this embodiment, the pneumatic vibrator 5, in cooperation with the time relay 7, controls the airflow with the help of the air pressure regulating valve 8 and the airflow regulating valve 9, and vibrates in a regular cycle of vibrating for one second and stopping for five seconds, providing energy output of stable intensity to the track 11 and the plastic plate. After many rounds of tests, under the volume of this embodiment, the vibration pattern of vibrating for one second and stopping for five seconds can meet the absolute precision positioning requirements while minimizing energy consumption.

[0027] Furthermore, in the present embodiment, the air pressure regulating valve 8, the air flow regulating valve 9 and the air source are arranged at the bottom of the rack, so as to facilitate the coordinated organization of the above-mentioned mechanisms with the exhaust pipe 51, place them together in the bottom area of ​​the rack 1, and avoid interference with the plastic plate on the top of the top plate of the rack 1 and other mechanisms.

[0028] It is worth noting that in this embodiment, the first solenoid valve 3, the power module 4, the second solenoid valve 6 and the time relay 7 are arranged on the same side of the bottom of the rack 1. At the same time, the air pressure regulating valve 8, the air flow regulating valve 9 and the air source are arranged on the other side of the bottom of the rack to minimize the interference of the air source exchange position on the electric control area.

[0029] Furthermore, in another embodiment, the number of chips is multiple, and in the step of "placing the plastic plate on the positioning area between the tracks, and placing the chip on the top of the plastic plate", the number of chips is counted while placing the multiple chips; when the preset number of chips all fall into the positioning groove of the plastic plate, "the power module 4 drives the first solenoid valve 3 to control the positioning cylinder 2 to release the hook limit on the plastic plate, and then the track 11 starts to operate and drives the plastic plate carrying the chip to leave the positioning area 12". Specifically, in the above embodiment, the number of chips carried on each plastic plate is determined by the size of each chip itself, and can be adjusted according to actual detection needs.

[0030] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention's specification and drawings are included in the scope of the present invention.

[0031] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0032] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and changes to the present application without departing from the spirit of the present application. It is intended that the attached embodiments include these modifications and changes without departing from the present application.

Claims

1. A chip positioning method for positioning a chip into a positioning groove of a plastic plate; characterized in that: The chip positioning method comprises: Providing a rack, wherein the top plate of the rack is provided with rails, placing the plastic plate on the positioning area between the rails, and placing the chip on the top of the plastic plate; A positioning cylinder, a first solenoid valve and a power module are provided, wherein the positioning cylinder is arranged between the rails and at the edge of the positioning area, the positioning cylinder is connected to the first solenoid valve, and the first solenoid valve is connected to the power module; the power module drives the first solenoid valve to control the positioning cylinder to hook the plastic plate tightly and limit it; A pneumatic vibrator, a second solenoid valve and a time relay are provided, wherein the pneumatic vibrator is attached to one side of the track, the pneumatic vibrator is connected to the second solenoid valve, the second solenoid valve is connected to the time relay, and the time relay is connected to the power module; after the plastic plate is hooked and limited by the positioning cylinder, the power module drives the time relay to operate, and the time relay intermittently controls the second solenoid valve to drive the pneumatic vibrator to vibrate, so that the chip falls into the positioning groove of the plastic plate after being vibrated; wherein the exhaust pipe of the pneumatic vibrator passes through the top plate of the frame and leads to the bottom of the frame, and during the intermittent vibration of the pneumatic vibrator, the exhaust pipe intermittently discharges exhaust gas to the bottom of the frame; After the chip falls into the positioning groove of the plastic plate, the power module drives the first solenoid valve to control the positioning cylinder to release the hook limit on the plastic plate, and then the track starts to operate and drives the plastic plate carrying the chip to leave the positioning area.

2. The chip positioning method according to claim 1, characterized in that: An air flow regulating valve and an air pressure regulating valve are provided, the second solenoid valve is connected to the air flow regulating valve, the air flow regulating valve is connected to the air pressure regulating valve, the air pressure regulating valve is connected to an external air source, and in the step "after the plastic plate is hooked and limited by the positioning cylinder, the power module drives the time relay to operate, and the time relay intermittently controls the second solenoid valve to drive the pneumatic vibrator to vibrate, so that the chip falls into the positioning groove of the plastic plate after being vibrated", the air pressure regulating valve stabilizes the air flow provided by the external air source to a preset air pressure and leads it to the air flow regulating valve, and the air flow regulating valve intermittently provides air flow to the pneumatic vibrator according to the opening and closing of the second solenoid valve.

3. The chip positioning method according to claim 2, characterized in that: The air pressure regulating valve, the air flow regulating valve and the air source are arranged at the bottom of the rack.

4. The chip positioning method according to claim 1, characterized in that: An exhaust fan is provided, and the exhaust fan is arranged at the bottom of the frame. During the step of "after the plastic plate is hooked and limited by the positioning cylinder, the power module drives the time relay to operate, and the time relay intermittently controls the second solenoid valve to drive the pneumatic vibrator to vibrate, so that the chip falls into the positioning groove of the plastic plate after being vibrated", the exhaust fan keeps running and promptly extracts the gas at the bottom of the machine to the outside of the machine.

5. The chip positioning method according to claim 1, characterized in that: There are multiple chips. In the step of "placing the plastic plate on the positioning area between the tracks and placing the chip on the top of the plastic plate", the number of chips is counted while placing the multiple chips. When a preset number of chips all fall into the positioning groove of the plastic plate, the step of "the power module drives the first solenoid valve to control the positioning cylinder to release the hook limit on the plastic plate, and then the track starts to run and drives the plastic plate carrying the chip to leave the positioning area" is executed.

6. The chip positioning method according to claim 1, characterized in that: The first solenoid valve, the power module, the second solenoid valve and the time relay are arranged on the same side of the bottom of the rack.

7. The chip positioning method according to claim 1, characterized in that: In the step "after the plastic plate is hooked and limited by the positioning cylinder, the power module drives the time relay to operate, and the time relay intermittently controls the second solenoid valve to drive the pneumatic vibrator to vibrate, so that the chip falls into the positioning groove of the plastic plate after being vibrated", the pneumatic vibrator vibrates in a regular cycle of vibrating for one second and stopping for five seconds.

8. A chip positioning system, which positions a chip in a positioning groove of a plastic plate by using the chip positioning method according to any one of claims 1 to 7, characterized in that: The chip positioning system comprises: a frame, a track, a positioning cylinder and a pneumatic vibrator arranged on the top plate of the frame, and a first solenoid valve, a power module, a second solenoid valve and a time relay arranged at the bottom of the frame.

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