A rotary positioning mechanism suitable for small products

Abstract

The application provides a rotating positioning mechanism suitable for small products, and belongs to the technical field of semiconductor equipment. The rotating positioning mechanism suitable for small products comprises an adjusting base, and a support module is installed on the top of the adjusting base. A vacuum rotating module is installed on the support module, a chip is placed on the vacuum rotating module, the vacuum rotating module drives the chip to rotate at an angle, in addition, a driving disc is rotatably connected to the support module, a first synchronous wheel is sleeved on the driving disc, the first synchronous wheel is driven to rotate by a servo motor, four driving grooves are formed in the top of the driving disc, four follow-up cams are respectively inserted into the four driving grooves, so that after the angle of the chip is adjusted, the first synchronous wheel drives the driving disc to rotate in opposite directions, the driving disc drives the driving grooves to move, the driving grooves drive the follow-up cams to move, and the four swing arms are closed and opened, so that the purpose of correcting the chip is achieved, and the situation that the chip deviates can be avoided.

Description

Technical Field

[0001] This application relates to the field of semiconductor equipment, and more specifically, to a rotary positioning mechanism suitable for small products. Background Technology

[0002] In turret equipment, chips are typically fed through a feeding module and sorted using vacuum nozzles on the turret. During this production process, due to the limited vacuum pressure of the nozzles, when the nozzles carry products at high speeds, insufficient vacuum pressure can cause products to fall off or slightly shift in position. With each turret rotation, the displacement of the product on the nozzle increases with the number of rotations. If this displacement variation is too large, the product may not be accurately placed into the positioning slot, leading to damage upon pressure. Therefore, positioning correction is needed at the station before placement into the positioning slot to ensure accurate product positioning. Furthermore, because the feeding direction of the feeding module and the testing direction of the testing station are uncertain, and different stations have different requirements for product placement orientation, visual judgment is generally used to determine the required rotation angle. Therefore, this positioning mechanism also incorporates a hollow shaft rotation function. After the nozzles release the chip, the product is vacuum-adsorbed, rotated, and then the grippers correct and position it.

[0003] The existing rotary positioning mechanism's gripper opening and closing structure involves a servo motor 1 driving a cam to move a push rod up and down. The push rod's inclined surface, in conjunction with a bearing, drives the gripper to open and close. Simultaneously, the servo motor 2 drives a synchronous wheel to rotate the gripper as a whole. Structurally, it is necessary to ensure that the center of the product and the rotation center of the positioning gripper are perfectly concentric; otherwise, it will cause the product to become eccentric after rotation. The positional deviation of the bearing and push rod will also cause the gripper to open and close asynchronously, resulting in a shift in the product's position after positioning. Therefore, we propose a rotary positioning mechanism suitable for small products. Utility Model Content

[0004] To overcome the above shortcomings, this application provides a rotary positioning mechanism suitable for small products, which aims to improve the problem that the existing gripper rotary lifting structure is prone to chip deviation.

[0005] This application provides a rotary positioning mechanism suitable for small products, including an adjustment base. A support module is mounted on the top of the adjustment base. A rotary drive module and a vacuum rotary module are mounted on the support module. A positioning unit module is also mounted on the support module. A correction module is rotatably connected to the positioning unit module. The bottom of the correction module is inserted into the top of the rotary drive module. The vacuum rotary module passes through the center of the rotary drive module and the positioning unit module.

[0006] In one specific implementation, the rotary drive module includes a drive disk, which is rotatably connected to the top of the support module. A first synchronous wheel is fitted on the drive disk, and four drive slots are opened on the top of the drive disk. The bottom of the correction module is inserted into the four drive slots, and the vacuum rotary module is disposed through the center of the drive disk.

[0007] In one specific implementation, the rotary drive module further includes a servo motor mounted on the bracket module. The servo motor drive shaft is connected to a second synchronous pulley, and the same synchronous belt is wound around the first synchronous pulley and the second synchronous pulley.

[0008] In one specific implementation, the positioning unit module includes a positioning unit bracket and a positioning unit base. The positioning unit bracket is fixedly installed on the bracket module, and the positioning unit base is fixedly installed on the positioning unit bracket. The correction module is rotatably connected to the positioning unit base.

[0009] In one specific implementation, the correction module includes four swing arms, each swing arm being rotatably connected to the positioning unit base. Each of the four swing arms has a connector rotatably connected to its bottom, and each of the four connectors has a follower cam fixedly installed at its bottom. The four follower cams are respectively inserted into the four drive slots, and each of the four swing arms has a gripper fixedly connected to its top. The vacuum rotation module passes through the center of the positioning unit base.

[0010] In one specific implementation, four adjustable limit blocks are installed on the top of the positioning unit base, and the four limit blocks are respectively arranged to contact the outer wall of the four swing arms.

[0011] In one specific implementation, four rotating shafts are rotatably connected to the base of the positioning unit, and the four swing arms are respectively fixedly sleeved on the four rotating shafts.

[0012] In one specific implementation, a protective cover is installed on the top of the support module.

[0013] The beneficial effects of this application are as follows: By installing a vacuum rotation module on the support module, the chip is placed in the vacuum rotation module, which drives the chip to rotate. In addition, a drive disk is rotatably connected to the support module, and a first synchronous wheel is fitted on the drive disk. The first synchronous wheel is driven to rotate by a servo motor. Four drive slots are opened on the top of the drive disk, and four follower cams are inserted into the four drive slots respectively. Thus, after the chip angle is adjusted, the first synchronous wheel drives the drive disk to rotate in both directions, causing the drive disk to drive the drive slots to move. In turn, the drive slots push the follower cams to move, causing the four swing arms to perform closing and opening movements, thereby achieving the purpose of correcting the chip and avoiding chip deviation. By installing four adjustable limit blocks on the top of the positioning unit base, the degree of closure of the four swing arms can be adjusted to facilitate adjustment according to the size of the chip. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the main structure of the rotary positioning mechanism for small products provided in the embodiments of this application; Figure 2 A front view of the rotary positioning mechanism for small products provided in the embodiments of this application; Figure 3 A partial structural schematic diagram of a rotary positioning mechanism suitable for small products provided for embodiments of this application; Figure 4 A schematic diagram of the positioning unit module and the correction module structure of the rotary positioning mechanism for small products provided in the embodiments of this application; Figure 5 A schematic diagram of the disassembled structure of the positioning unit bracket of the rotary positioning mechanism for small products provided in the embodiments of this application; Figure 6 A schematic diagram showing the disassembled structure of the positioning unit module and the correction module of the rotary positioning mechanism for small products provided in the embodiments of this application.

[0016] In the diagram: 10-Adjustment base; 20-Bracket module; 210-Protective cover; 30-Rotation drive module; 310-Drive disk; 320-First synchronous pulley; 330-Drive groove; 340-Servo motor; 350-Second synchronous pulley; 360-Synchronous belt; 40-Vacuum rotation module; 50-Positioning unit module; 510-Positioning unit bracket; 520-Positioning unit base; 530-Limit block; 540-Rotation shaft; 60-Correction module; 610-Swing arm; 620-Connector; 630-Follow-up cam; 640-Gripper. Detailed Implementation

[0017] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0018] Please see Figure 1-6 This application provides a rotary positioning mechanism suitable for small products, including an adjusting base 10, a support module 20 mounted on the top of the adjusting base 10, a rotary drive module 30 and a vacuum rotary module 40 mounted on the support module 20. Specifically, the vacuum rotary module 40 supports a chip, see attached drawing. Figure 1 , 2 3 and 6, the vacuum rotation module 40 rotates the hollow shaft via an existing servo drive, causing the hollow shaft to rotate the chip by an angle. The support module 20 is also equipped with a positioning unit module 50, and a correction module 60 is rotatably connected to the positioning unit module 50. The bottom of the correction module 60 is inserted into the top of the rotation drive module 30. Specifically, the rotation drive module 30 rotates to drive the correction module 60 to achieve the purpose of chip correction. The vacuum rotation module 40 passes through the center of the rotation drive module 30 and the positioning unit module 50.

[0019] See Figure 4-6 The rotary drive module 30 includes a drive disk 310, which is rotatably connected to the top of the support module 20. Specifically, the drive disk 310 is mounted on the support module 20 via bearings. A first synchronous wheel 320 is sleeved on the drive disk 310, and four drive slots 330 are formed on the top of the drive disk 310. The bottom of the correction module 60 is inserted into the four drive slots 330. The shapes of the four drive slots 330 are shown in the attached figure. Figure 6 As shown, when the drive disk 310 rotates, the bottom of the correction module 60 is affected by the drive groove 330, and thus moves accordingly, so that the correction module 60 can perform the correction process and the reset process. The vacuum rotation module 40 is set through the center of the drive disk 310.

[0020] See Figure 3The rotation drive module 30 also includes a servo motor 340, which is mounted on the bracket module 20. The drive shaft of the servo motor 340 is connected to a second synchronous pulley 350. The same synchronous belt 360 is wound around the first synchronous pulley 320 and the second synchronous pulley 350. The servo motor 340 drives the second synchronous pulley 350 to rotate in both directions, thereby driving the first synchronous pulley 320 to rotate in both directions.

[0021] See Figure 4-6 The positioning unit module 50 includes a positioning unit bracket 510 and a positioning unit base 520. Specifically, the positioning unit bracket 510 is bolted to the bracket module 20, and the positioning unit base 520 is bolted to the positioning unit bracket 510. The positioning unit bracket 510 is fixedly mounted on the bracket module 20, and the positioning unit base 520 is fixedly mounted on the positioning unit bracket 510. The correction module 60 is rotatably connected to the positioning unit base 520, which is configured to limit the positioning of the correction module 60. Furthermore, the correction module 60 includes four swing arms 610, each of which... The four swing arms 610 are rotatably connected to the base 520 of the positioning unit. Each of the four swing arms 610 has a connector 620 rotatably connected to its bottom. Each of the four connectors 620 has a follower cam 630 fixedly installed at its bottom. Each of the four follower cams 630 is inserted into a drive slot 330. When set, the drive disc 310 drives the four drive slots 330 to move, which in turn drives the four follower cams 630 to move. Thus, the follower cams 630 drive the swing arms 610 to rotate through the connectors 620. Each of the four swing arms 610 has a gripper 640 fixedly connected to its top, which enables the grippers 640 to open and close. The vacuum rotation module 40 passes through the center of the positioning unit base 520.

[0022] See Figure 4-6 The top of the positioning unit base 520 is equipped with four adjustable limit blocks 530. The four limit blocks 530 are respectively set to contact the outer wall of the four swing arms 610. In the specific setting, four sets of screw holes are opened on the top of the positioning unit base 520, and two screw holes are opened on each set. The limit blocks 530 are provided with two elongated holes. The screw is passed through the elongated holes and connected to the screw holes to realize the installation of the limit blocks 530 on the positioning unit base 520. At the same time, the position of the limit blocks 530 can be adjusted so as to adjust according to the size of the chip, and thus adjust the angle of the four grippers 640.

[0023] See Figure 5 and 6Four rotating shafts 540 are rotatably connected to the positioning unit base 520, and four swing arms 610 are respectively fixedly sleeved on the four rotating shafts 540. Specifically, the rotating shafts 540 are rotatably connected to the positioning unit base 520 through bearings, so that the swing arms 610 rotate around the rotating shafts 540 as fulcrum, thereby realizing the opening and closing of the grippers 640. Furthermore, a protective cover 210 is installed on the top of the bracket module 20.

[0024] This rotary positioning mechanism, applicable to small products, operates as follows: the suction nozzle carries the material to the correct position, the pressing module presses down the suction nozzle, the suction nozzle releases vacuum, the chip is placed on the vacuum rotation module 40, and the chip rotates near the vacuum rotation module 40 to adjust its angle. After the chip angle adjustment is completed, the servo motor 340 drives the second synchronous wheel 350 to rotate in both directions, thereby causing the second synchronous wheel 350 to drive the first synchronous wheel 320 to rotate in both directions via the synchronous belt 360. This causes the first synchronous wheel 320 to drive the drive disk 310 to rotate in both directions, thereby achieving the rotation of the four drive slots 330 in both directions. The drive slots 330 then drive the follower cam 630 to move, and the follower cam 630 drives the swing arm 610 to rotate via the connector 620, so that the four swing arms 610 drive the four grippers 640 to close and open, thereby correcting the chip. The grippers 640 are then reset to the open state.

[0025] It should be noted that the specific models and specifications of the adjustment base 10, vacuum rotation module 40, and servo motor 340 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0026] The power supply and operating principle of the adjustment base 10, vacuum rotation module 40, and servo motor 340 are clear to those skilled in the art and will not be described in detail here.

[0027] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A rotary positioning mechanism suitable for small products, characterized in that, The device includes an adjustment base (10), on which a support module (20) is mounted. A rotation drive module (30) and a vacuum rotation module (40) for supporting the chip are mounted on the support module (20). A positioning unit module (50) is also mounted on the support module (20). A correction module (60) is rotatably connected to the positioning unit module (50). The bottom of the correction module (60) is inserted into the top of the rotation drive module (30). The vacuum rotation module (40) passes through the center of the rotation drive module (30) and the positioning unit module (50).

2. The rotary positioning mechanism for small products according to claim 1, characterized in that, The rotary drive module (30) includes a drive disk (310), which is rotatably connected to the top of the support module (20). A first synchronous wheel (320) is sleeved on the drive disk (310), and four drive slots (330) are opened on the top of the drive disk (310). The bottom of the correction module (60) is inserted into the four drive slots (330), and the vacuum rotary module (40) is set through the center of the drive disk (310).

3. The rotary positioning mechanism for small products according to claim 2, characterized in that, The rotary drive module (30) also includes a servo motor (340), which is mounted on the bracket module (20). The servo motor (340) has a drive shaft connected to a second synchronous pulley (350), and the first synchronous pulley (320) and the second synchronous pulley (350) are wound with the same synchronous belt (360).

4. A rotary positioning mechanism suitable for small products according to claim 2, characterized in that, The positioning unit module (50) includes a positioning unit bracket (510) and a positioning unit base (520). The positioning unit bracket (510) is fixedly installed on the bracket module (20), and the positioning unit base (520) is fixedly installed on the positioning unit bracket (510). The correction module (60) is rotatably connected to the positioning unit base (520).

5. A rotary positioning mechanism suitable for small products according to claim 4, characterized in that, The correction module (60) includes four swing arms (610), all four swing arms (610) are rotatably connected to the positioning unit base (520), and each of the four swing arms (610) is rotatably connected to a connector (620). Each of the four connectors (620) is fixedly mounted with a follower cam (630) at its bottom. Each of the four follower cams (630) is inserted into one of the four drive slots (330). Each of the four swing arms (610) is fixedly connected to a gripper (640) at its top. The vacuum rotation module (40) passes through the center of the positioning unit base (520).

6. A rotary positioning mechanism suitable for small products according to claim 5, characterized in that, The top of the positioning unit base (520) is equipped with four adjustable limit blocks (530), and the four limit blocks (530) are respectively set to contact the outer wall of the four swing arms (610).

7. A rotary positioning mechanism suitable for small products according to claim 5, characterized in that, The positioning unit base (520) is rotatably connected to four rotating shafts (540), and the four swing arms (610) are respectively fixedly sleeved on the four rotating shafts (540).

8. A rotary positioning mechanism suitable for small products according to claim 1, characterized in that, The support module (20) is equipped with a protective cover (210) on top.

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