A four-claw positioning steering mechanism

Abstract

The present invention discloses a four-claw positioning and steering mechanism, including a base, a support seat 1, a support seat 2, a motor, an electromagnet, a lifting assembly and a clamping claw assembly; the support seat 1 is installed on the base, the support seat 2 and the motor are installed on the support seat 1, the electromagnet is fixedly installed on the support seat 2, and the lifting assembly and the clamping claw assembly are rotatably installed on the support seat 2 through a bearing 1; the sliding plate of the lifting assembly adopts a polar material and is arranged adjacent to the electromagnet along the axial direction, so as to realize the axial adsorption and separation of the sliding plate through the switching of the electromagnet, thereby driving the top rod to rise and fall along the slide slot through the sliding plate, and then driving the clamping claw assembly to open and close through the top rod to realize the pick-up and placement positioning of the workpiece. The four-claw positioning and steering mechanism provided by the present invention only needs a set of driving motors and electromagnets to effectively perform the centering and rotation positioning of electronic components, which effectively reduces the manufacturing and assembly maintenance costs of the device.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor testing equipment, and in particular to a four-claw positioning and steering mechanism. Background Art

[0002] After the production of IC components is completed, they need to go through multiple different performance testing processes to test whether they are qualified, and then they are taped and packaged and rolled into reels for subsequent transportation, storage and use. IC component testing and packaging usually uses a turntable test and taping all-in-one machine, that is, IC components are sucked by many suction nozzles with air pressure suction on the rotating table and tested at different stations. Through polarity testing, steering positioning, performance testing, visual inspection (2D, 3D, 5S), printing, steering and other processes, unqualified products are classified and recycled, and qualified products are finally taped and packaged.

[0003] In the prior art, such as the four-claw positioning mechanism with sequential opening and closing disclosed in the patent with application number 201810644394.2, the four-claw positioning mechanism for LED patch disclosed in the patent with application number 201521057170.X, the four-claw positioning device disclosed in the patent with application number 201920433169.4, and the four-claw positioning structure for LED cam turntable patch machine disclosed in the patent with application number 202020145705.3, etc., all need to drive the cam to rotate by a stepper motor to realize the opening and closing of the clamping jaws, and the cam structure not only occupies a large volume but also easily causes vibration, and IC components such as chips are more sensitive to vibration during the test process, which will cause test errors and damage to IC components. In addition, the motor-driven cam structure leads to high overall equipment complexity and production cost, which will cause cumulative errors. Since IC components have high requirements for test accuracy, the positioning accuracy deviation caused by the cumulative error will lead to inaccurate IC component test results.

[0004] Therefore, since the offset and direction errors of IC components such as chips during testing will cause erroneous test results and damage to the chip's external packaging, a four-claw positioning and steering mechanism that can effectively correct the chip position and direction to complete the test is proposed to ensure the direction of the IC component during electrical testing and avoid damage to the body due to offset. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a four-claw positioning steering mechanism, including a base, a support seat 1, a support seat 2, a motor, an electromagnet, a lifting assembly and a clamping claw assembly;

[0006] The support seat 1 is installed on the base, the support seat 2 and the motor are installed on the support seat 1, the electromagnet is fixedly installed on the support seat 2, and the lifting assembly and the clamping jaw assembly are rotatably installed on the support seat 2 through the bearing 1;

[0007] The lifting assembly includes a sleeve, a push rod axially arranged in the sleeve, a spring 1 axially sleeved on the push rod, a sliding plate axially slidably sleeved on the radially outer side of the sleeve, a limit pin radially arranged for fixed connection of the sliding plate and the push rod, and a sliding groove axially opened on the sleeve and corresponding to the limit pin to realize the up and down sliding of the sliding plate and the push rod, the spring 1 is axially located between the limit pin and the clamping jaw assembly; the lower end of the sleeve is fixedly connected to the rotating shaft 1 of the motor, the bearing 1 is rotatably sleeved on the radially outer side of the sleeve, and the clamping jaw assembly is fixedly installed on the lifting assembly through the limit plate at the axial upper end of the sleeve, so that the lifting assembly and the clamping jaw assembly can be driven by the motor to rotate radially based on the bearing 1;

[0008] The sliding plate is made of polar material and is axially adjacent to the electromagnet, so that the sliding plate can be axially adsorbed and separated by the on and off of the electromagnet, thereby driving the push rod to rise and fall along the slide slot through the sliding plate, and then driving the jaw assembly to open and close through the push rod to achieve the picking and placing positioning of the workpiece.

[0009] The clamping jaw assembly comprises a mounting plate, a hollow shaft seat axially and vertically arranged on the mounting plate, a support seat three symmetrically arranged on the radial outer side of the hollow shaft seat in four equal parts, and a radial mounting groove is formed between two adjacent support seats three, a rotating rod is rotatably arranged in the mounting groove, clamping jaws respectively arranged on the top of the four rotating rods and symmetrically divided into four equal parts, and a spring two corresponding to the four rotating rods and arranged radially;

[0010] A rotating shaft 2 is radially arranged between two adjacent support seats 3 through a bearing 2, and the rotating rod is rotatably installed in the installation groove through the rotating shaft 2;

[0011] The two ends of the second spring are respectively connected to the hollow shaft seat and the lower end of the rotating rod;

[0012] A positioning block corresponding to the four clamping jaws is centrally arranged at the radial upper end of the hollow shaft seat for supporting and positioning the workpiece;

[0013] The radial inner side of the hollow shaft seat is divided into four equal parts and is provided with four cams corresponding to the four clamping jaws respectively. The push rod is axially penetrated into the hollow shaft seat and the axial end of the push rod synchronously contacts or moves away from the four cams.

[0014] Among them, a mounting hole is axially opened on the horizontal plate of the support seat, the motor is installed on the lower side of the horizontal plate of the support seat, and the rotating shaft passes through the mounting hole and is fixedly connected to the lower end of the sleeve.

[0015] Furthermore, it also includes a clamp, and the rotating shaft 1 and the lower end of the sleeve are locked and fixedly connected through the clamp.

[0016] Among them, a mounting hole 2 corresponding to the motor is opened on the vertical plate 1 of the support seat 1, and a cooling fan corresponding to the mounting hole 2 is installed on the outer side of the vertical plate 1 to achieve heat dissipation of the motor.

[0017] Among them, the vertical plate 2 of the support seat 2 is installed on the horizontal plate 1 of the support seat 1, and the horizontal plate 2 of the support seat 2 is axially provided with a mounting hole 3, the bearing 1 is installed in the mounting hole 3 through a pressure plate, and the pressure plate is axially provided with a mounting hole 4 corresponding to the sleeve, and the sleeve is axially penetrated into the mounting hole 4.

[0018] Furthermore, it also includes a linear bearing axially arranged in the sleeve, the linear bearing is axially slidably sleeved on the radial outside of the push rod, and the spring is axially located between the limit pin and the linear bearing.

[0019] Furthermore, it also includes a contact piece, which is installed on the second support seat and contacts the electromagnet to eliminate static electricity of the electromagnet.

[0020] Through the above technical solution, the four-claw positioning steering mechanism provided by the present invention only requires a set of drive motors and electromagnets to effectively perform centering and rotational positioning of electronic components, effectively reducing the manufacturing, assembly and maintenance costs of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0022] Figure 1 This is a schematic diagram of the exploded structure of the four-claw positioning steering mechanism disclosed in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the clamping jaw assembly disclosed in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the front view structure of the four-claw positioning steering mechanism disclosed in an embodiment of the present invention;

[0025] Figure 4 It is a schematic diagram of a top view of the structure of a four-claw positioning and steering mechanism disclosed in an embodiment of the present invention;

[0026] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the AA axis.

[0027] In the figure: 10. base; 11. support seat 1; 111. mounting hole 1; 112. mounting hole 2; 12. support seat 2; 121. mounting hole 3; 13. motor; 131. rotating shaft 1; 14. clamp; 15. electromagnet; 16. bearing 1; 17. sliding plate; 18. push rod; 181. limit pin; 19. spring 1; 20. bushing; 201. limit plate; 202. slide groove; 21. linear bearing; 22. pressure plate; 221. mounting hole 4; 23. clamping jaw assembly; 231. mounting plate; 232. hollow shaft seat; 233. support seat 3; 2341. rotating shaft 2; 2342. bearing 2; 235. rotating rod; 236. spring 2; 237. clamping jaw; 238. positioning block; 239. cam; 24. cooling fan; 25. contact piece; 30. workpiece. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] refer to Figure 1-5 A four-claw positioning and steering mechanism provided by an embodiment of the present invention includes a base 10, a support base 11, a support base 12, a motor 13, an electromagnet 15, a lifting assembly and a clamping jaw assembly 23; the support base 11 is installed on the base 10, the support base 12 and the motor 13 are installed on the support base 11, the electromagnet 15 is fixedly installed on the support base 12, and the lifting assembly and the clamping jaw assembly 23 are rotatably installed on the support base 12 through a bearing 16.

[0030] Specifically, the lifting assembly includes a sleeve 20, a push rod 18 axially arranged in the sleeve 20, a spring 19 axially sleeved on the push rod 18, a sliding plate 17 axially slidably sleeved on the radial outer side of the sleeve 20, a limit pin 181 radially arranged for fixed connection between the sliding plate 17 and the push rod 18, and a slide groove 202 axially opened on the sleeve 20 and corresponding to the limit pin 181 to realize the up and down sliding of the sliding plate 17 and the push rod 18, a linear bearing 21 axially slidably sleeved on the radial outer side of the push rod 18, and the spring 19 axially located between the limit pin 181 and the linear bearing 21; the lower end of the sleeve 20 is connected to the rotating shaft of the motor 13. 131 is locked and fixedly connected by a clamp 14, a bearing 16 is rotatably sleeved on the radially outer side of the sleeve 20, and the clamping jaw assembly 23 is fixedly installed on the lifting assembly through a limit plate 201 at the axial upper end of the sleeve 20, so that the lifting assembly and the clamping jaw assembly 23 are driven by the motor 13 to rotate radially based on the bearing 16; the sliding plate 17 is made of polar material and is axially adjacent to the electromagnet 15, so that the axial adsorption and separation of the sliding plate 17 can be achieved through the switching of the electromagnet 15, so that the push rod 18 is driven to rise and fall along the slide groove 202 through the sliding plate 17, and then the clamping jaw assembly 23 is driven to open and close through the push rod 18 to achieve the picking and positioning of the workpiece.

[0031] Specifically, the clamping jaw assembly 23 includes a mounting plate 231, a hollow shaft seat 232 axially and vertically arranged on the mounting plate 231, a support seat 3 233 symmetrically arranged on the radial outer side of the hollow shaft seat 232 in four equal parts, and a radial mounting groove is formed between two adjacent support seats 3 233, a rotating rod 235 is rotatably arranged in the mounting groove, clamping jaws 237 respectively arranged on the top of the four rotating rods 235 and symmetrically divided into four equal parts, and a spring 2 236 corresponding to the four rotating rods 235 and arranged radially;

[0032] A rotating shaft 2341 is radially arranged between two adjacent support seats 3 233 through a bearing 2342, and a rotating rod 235 is rotatably installed in the installation groove through the rotating shaft 2341; the two ends of the spring 236 are respectively connected to the hollow shaft seat 232 and the lower end of the rotating rod 235; a positioning block 238 corresponding to four clamping jaws 237 is centrally arranged at the radial upper end of the hollow shaft seat 232 for supporting and positioning the workpiece 30; four cams 239 corresponding to the four clamping jaws 237 are respectively arranged on the radial inner side of the hollow shaft seat 232 in four equal parts, and the push rod 18 is axially penetrated into the hollow shaft seat 232 and the axial end of the push rod 18 synchronously contacts or moves away from the four cams 239.

[0033] Specifically, a mounting hole 111 is axially opened on the horizontal plate 1 of the support seat 11, the motor 13 is installed on the lower side of the horizontal plate of the support seat 11, and the rotating shaft 131 passes through the mounting hole 111 and is fixedly connected to the lower end of the sleeve 20; the vertical plate 2 of the support seat 12 is installed on the horizontal plate 1 of the support seat 11, and the horizontal plate 2 of the support seat 12 is axially opened with a mounting hole 3 121, the bearing 16 is installed in the mounting hole 3 121 through the pressure plate 22, and the pressure plate 22 is axially opened with a mounting hole 4 221 corresponding to the sleeve 20, and the sleeve 20 is axially penetrated in the mounting hole 4 221; the vertical plate 1 of the support seat 11 is opened with a mounting hole 2 112 corresponding to the motor 13, and a cooling fan 24 corresponding to the mounting hole 2 112 is installed on the outer side of the vertical plate 1 to achieve heat dissipation of the motor 13; the contact sheet 25 is installed on the support seat 2 12 and contacts the electromagnet 15 to eliminate static electricity of the electromagnet 15.

[0034] The working principle of this embodiment:

[0035] First, when the electromagnet 16 is powered, the electromagnet 16 magnetically adsorbs the sliding plate 17 of polar material, thereby driving the sliding plate 17 to drive the ejector rod 18 to axially lift and compress the spring 19, and during the lifting process, the limit pin 181 slides axially upward along the slide groove 202 of the shaft sleeve 20;

[0036] When the sliding plate 17 and the electromagnet 16 are adsorbed and fitted, the axial end of the push rod 18 contacts the four cams 239 of the hollow shaft seat 232 and expands the four cams 239 outward, thereby synchronously driving the four rotating rods 235 to rotate based on the second rotating shaft 2341 through the four cams 239, so that the upper ends of the four rotating rods 235 are synchronously opened outward and synchronously drive the four clamping claws 237 to open outward, and at the same time, the lower ends of the four rotating rods 235 compress the four second springs 236 respectively, so as to realize the opening of the four clamping claws 237;

[0037] When the four clamps 237 are opened synchronously, the workpiece 30 sucked by other stations is prevented between the four clamps 237 by the suction nozzle and supported and positioned by the positioning block 238;

[0038] After the workpiece 30 is positioned, the electromagnet 16 is powered off, the spring 19 is reset and drives the ejector rod 18 and the slide plate 17 to reset, and the limit pin 181 slides along the slide groove 202. At this time, the axial end of the ejector rod 18 is separated from the four cams 239 of the hollow shaft seat 232, and at the same time, the four springs 236 at the lower ends of the four rotating rods 235 are reset synchronously. When the four springs 236 are reset, they synchronously drive the four rotating rods 235 to rotate based on the rotating shaft 2341, so that the upper ends of the four rotating rods 235 are synchronously closed inwardly and the four clamping jaws 237 are synchronously closed inwardly, so that the workpiece 30 on the positioning block 238 is clamped and positioned in the center through the synchronous closing of the four clamping jaws 237.

[0039] Then, start the motor 13 to rotate, and then drive the sleeve 20 to rotate through the rotating shaft 131 of the motor 13, and then drive the radial limiting push rod 18 and the limiting pin 181 to rotate synchronously through the rotation of the sleeve 20, and simultaneously drive the clamping jaw assembly 23 fixedly installed with the limiting plate 201 of the sleeve 20 to rotate synchronously, so as to realize the rotation positioning of the workpiece 30 and perform corresponding tests.

[0040] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to the above embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A four-claw positioning steering mechanism, It is characterized in that It comprises a base (10), a first support base (11), a second support base (12), a motor (13), an electromagnet (15), a lifting assembly and a clamping claw assembly (23); The support seat 1 (11) is mounted on the base (10), the support seat 2 (12) and the motor (13) are mounted on the support seat 1 (11), the electromagnet (15) is fixedly mounted on the support seat 2 (12), and the lifting assembly and the clamping jaw assembly (23) are rotatably mounted on the support seat 2 (12) via the bearing 1 (16); The lifting assembly comprises a shaft sleeve (20), a push rod (18) axially arranged in the shaft sleeve (20), a spring (19) axially sleeved on the push rod (18), a sliding plate (17) axially slidably sleeved on the radial outer side of the shaft sleeve (20), a limit pin (181) radially arranged for fixed connection between the sliding plate (17) and the push rod (18), and a sliding groove (202) axially opened on the shaft sleeve (20) and corresponding to the limit pin (181) to realize the upward and downward sliding of the sliding plate (17) and the push rod (18), the The spring 1 (19) is axially located between the limit pin (181) and the clamping jaw assembly (23); the lower end of the shaft sleeve (20) is fixedly connected to the rotating shaft 1 (131) of the motor (13); the bearing 1 (16) is rotatably sleeved on the radial outer side of the shaft sleeve (20); the clamping jaw assembly (23) is fixedly installed on the lifting assembly through the limit plate (201) at the axial upper end of the shaft sleeve (20), so that the lifting assembly and the clamping jaw assembly (23) are driven by the motor (13) to rotate radially based on the bearing 1 (16); The sliding plate (17) is made of polar material and is arranged adjacent to the electromagnet (15) in the axial direction, so that the sliding plate (17) can be axially attracted and moved away by turning the electromagnet (15) on and off, thereby driving the push rod (18) to rise and fall along the slide groove (202) through the sliding plate (17), and then driving the clamping jaw assembly (23) to open and close through the push rod (18) to realize the picking and placing positioning of the workpiece; The clamping jaw assembly (23) comprises a mounting plate (231), a hollow shaft seat (232) axially and vertically arranged on the mounting plate (231), a support seat (233) symmetrically arranged on the radial outer side of the hollow shaft seat (232) in four equal parts, and a radial mounting groove is formed between two adjacent support seats (233), a rotating rod (235) is rotatably arranged in the mounting groove, clamping jaws (237) are respectively arranged on the top of the four rotating rods (235) and symmetrically divided into four equal parts, and a spring (236) corresponding to the four rotating rods (235) and arranged radially; A second rotating shaft (2341) is radially arranged between two adjacent support seats (233) via a second bearing (2342), and the rotating rod (235) is rotatably installed in the installation groove via the second rotating shaft (2341); The two ends of the second spring (236) are respectively connected to the hollow shaft seat (232) and the lower end of the rotating rod (235); A positioning block (238) corresponding to the four clamping jaws (237) is centrally arranged at the radial upper end of the hollow shaft seat (232) for supporting and positioning the workpiece (30); Four cams (239) corresponding to the four clamping jaws (237) are arranged in four equal parts on the radial inner side of the hollow shaft seat (232); the push rod (18) is axially inserted into the hollow shaft seat (232) and the axial end of the push rod (18) synchronously contacts or moves away from the four cams (239).

2. The four-claw positioning steering mechanism according to claim 1, It is characterized in that A mounting hole (111) is axially opened on the transverse plate of the support seat (11), the motor (13) is mounted on a lower side of the transverse plate of the support seat (11), and the rotating shaft (131) passes through the mounting hole (111) and is fixedly connected to the lower end of the shaft sleeve (20).

3. The four-claw positioning steering mechanism according to claim 2, It is characterized in that It also includes a clamp (14), and the rotating shaft (131) and the lower end of the shaft sleeve (20) are locked and fixedly connected via the clamp (14).

4. The four-claw positioning steering mechanism according to claim 2, It is characterized in that A second mounting hole (112) corresponding to the motor (13) is provided on the vertical plate 1 of the support seat 1 (11), and a cooling fan (24) corresponding to the second mounting hole (112) is installed on the outer side of the vertical plate 1 to achieve heat dissipation of the motor (13).

5. The four-claw positioning steering mechanism according to claim 2, It is characterized in that The vertical plate 2 of the support seat 2 (12) is installed on the horizontal plate 1 of the support seat 1 (11), and the horizontal plate 2 of the support seat 2 (12) is axially provided with a mounting hole 3 (121), the bearing 1 (16) is installed in the mounting hole 3 (121) through a pressure plate (22), and the pressure plate (22) is axially provided with a mounting hole 4 (221) corresponding to the shaft sleeve (20), and the shaft sleeve (20) is axially penetrated in the mounting hole 4 (221).

6. The four-claw positioning steering mechanism according to claim 1, It is characterized in that It also includes a linear bearing (21) axially arranged in the sleeve (20), the linear bearing (21) is axially slidably sleeved on the radial outside of the push rod (18), and the spring 1 (19) is axially located between the limit pin (181) and the linear bearing (21).

7. The four-claw positioning steering mechanism according to claim 1, It is characterized in that It also includes a contact piece (25), which is mounted on the second support seat (12) and in contact with the electromagnet (15) to eliminate static electricity of the electromagnet (15).

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