WO2009062349A1

WO2009062349A1 - Positioning mechanism for product transmission in chip led taping machine

Info

Publication number: WO2009062349A1
Application number: PCT/CN2007/003741
Authority: WO
Inventors: Laihu Miao; Zhongpin Shan; Shaofang Liu
Original assignee: Foshan Nationstar Optoelectronics Limited Liability Company
Priority date: 2007-11-16
Filing date: 2007-12-24
Publication date: 2009-05-22
Also published as: CN100506652C; CN101168388A

Abstract

A positioning mechanism for product transmission in a chip LED taping machine has a vibrating disk (4), a motor (5), a graduator (6), a positioning mechanism (7), a product transmission mechanism (8) and driving arms (9). The product transmission mechanism (8) and the positioning mechanism (7) are both driven by the output shaft (10) of the graduator without any other executing mechanism, the output shaft (10) of the graduator and the product transmission mechanism (8) are connected by a tie-in, and the tie-in and the driving arm (9) are connected through a rolling bearing (15). The guiding axle (14) is utilized for fixing the horizontal freedom of motion of the driving arm (9), and an adjustable bolt (12) is used for controlling the height of a mandril which synchronically rises and falls with the rise and fall of the graduator (6) and controls the two positioning detents (13) to open and close at the same time. The moving frequencies of the positioning mechanism (7) and the product transmission mechanism (8) are the same, and the moving speeds are not restrained by any additional executing element and are totally controlled by the motor (5). The positioning mechanism has a simple structure, high practicability, and a good promotional value.

Description

Chip type LED tape machine product transfer positioning mechanism

The present invention relates to the field of semiconductor manufacturing, and more particularly to a product transport mechanism for a chip-type light-emitting diode automatic tape-splitting machine.

Background technique

The surface mount LED automatic tape machine is one of the key equipments of the chip light-emitting diode production line. It is an automatic production equipment that puts the surface-mounted LEDs after the test classification into the carrier tape according to the set direction and packages them. Vibrating feeding mechanism, product conveying and positioning machine, test sorting mechanism, polar rotating mechanism, carrier feeding mechanism, carrier tape feeding mechanism, image detecting mechanism, thermocompression bonding mechanism and receiving mechanism composition. The LED product transfer and positioning mechanism is one of the main mechanisms in the working process of the braiding machine. The main function is to transfer the LED products to different stations through the rotation of the turntable and correct the position of the products before the test and carrier feeding. The quality of the correction directly affects the braiding quality and the braiding speed of the machine. At present, there are two kinds of commonly used transfer positioning mechanisms. One is to transfer the product through the indexer to pull out the shaft hard connection service disk, and the positioning bracket is used to push the product positioning through the double-acting cylinder. The reaction speed of the cylinder is limited, for the medium and low speed machine. Can meet the demand, but when the speed reaches a certain value (28K / H) cylinder can not meet the requirements. In order to meet the requirements of high speed, another mechanism has emerged, which uses a motor to drive the cam mechanism to control the opening and closing of the positioning claw. Both of the above mechanisms can meet the requirements of specific machines, but they all use actuators. The errors between different actuators cause inconsistencies in positioning, which leads to an increase in the amount of material and side material during the tape-making process, resulting in a decrease in machine efficiency. As shown in Figure 1, the centering part and the product transfer part and the two product centering stations 1, 2 are completely controlled by different actuators, which are constrained by the control element 3 in speed and difficult to control in timing. Increase, The consistency of the machine movement is poor, the feedstock is expected to increase, the shutdown frequency is high, and the machine efficiency is low. Invention

The object of the present invention is to provide a chip LED tape machine product transfer mechanism which is not only simple in structure, fast in speed, but also highly consistent in positioning in order to solve the deficiencies of the prior art.

The present invention achieves the above object by using the following technical solutions: A sheet type LED braiding machine product conveying positioning mechanism, comprising a vibration disk, a motor, an indexing device, a positioning mechanism, and a product conveying mechanism, wherein: the motor drives the indexer The indexer output shaft and the product conveying mechanism are connected by a joint, and the joint is provided with a transmission arm and a rotary connection thereof, and the other end of the transmission arm is connected with a jack mechanism for controlling the opening and closing of the positioning mechanism.

As a further illustration of the above solution, the joint between the joint and the transmission arm is connected by a rolling bearing, and the inner annular surface of the bearing is excessively matched with the joint, and the outer annular surface of the bearing is interference fit with the transmission arm.

The jack mechanism includes a jack and an adjustable bolt that is coupled to the jack, and the adjustable bolt is locked to the arm by a nut.

The end of the ram is provided with a positioning claw piece, and a bearing is arranged between the ejector pin and the positioning claw, and a compression spring is arranged on the periphery of the bearing.

The product transport mechanism includes a suction pan and a tip disposed above the suction pan, the tip employing a high speed rotary vacuum tip.

The transmission arm is provided with a positioning hole, and the positioning hole is provided with a guiding shaft for restraining the horizontal freedom of the transmission arm.

The beneficial effects that the present invention can achieve by using the above technical solutions are:

1. The invention adopts the output shaft of the indexer as the actuator, and the two positioning claws are simultaneously positioned, and the consistency is good, which reduces the side material and the reverse material during the working process of the machine.

2. In the present invention, the positioning mechanism and the product conveying mechanism have the same motion frequency, and the speed is completely controlled by the horse. Control, not subject to external actuators, can achieve high operating speeds.

3. In the present invention, the positioning claw piece and the indexing plate move in the same manner, and the phenomenon that the suction head is broken due to improper control of the positioning claw piece is not generated, and the speed of the positioning machine 正常 during normal operation is completely controlled by the indexer driving motor. Can meet the requirements of machine operation.

4. The invention controls the angle of the positioning jaws by adjustable bolts during normal operation, and the positioning is precise and convenient.

DRAWINGS

1 is a schematic structural view of a product transfer positioning mechanism of the prior art;

2 is a schematic structural view of a product conveying and positioning mechanism of the present invention;

3 to FIG. 5 are three-dimensional views of the product transfer positioning mechanism of the present invention;

Figure 6 is a schematic enlarged view of the A-A of Figure 5;

Figure 7 is a schematic perspective view of the present invention.

DESCRIPTION OF REFERENCE NUMERALS: 1. Product centering station 2, product centering station 3, control element 4, vibrating plate 5, motor 6, indexer 7, positioning mechanism 8, product conveying mechanism 9, transmission arm 10, indexer output Shaft 11, ram mechanism 12, adjustable bolt 13, positioning claw 14, guide shaft 15, bearing 16, nut

detailed description

As shown in FIG. 2 to FIG. 7, the chip type LED braiding machine product conveying positioning mechanism comprises a vibrating plate 4, a motor 5, a indexing device 6, a positioning mechanism 7, a product conveying mechanism 8, and the indexing device 6 has 16 divisions. Driven by the motor 5, each indexing moves according to a certain cam curve, and the horizontal and vertical movement of the product conveying mechanism 8 is realized, and the product is delivered to each station. The product conveying mechanism 8 includes a suction tray and a suction head. A high-speed rotary vacuum nozzle is mounted above the suction tray. When the power of the machine is turned on, the vacuum is opened and a vacuum is applied to the suction head. Indexer output shaft 10 and product transfer The mechanism 8 is hard-connected through a joint, and the joint is provided with a transmission arm 9 and a rotary connection thereof. The positioning mechanism 7 has no actuator and is completely powered by the transmission arm 9. In this embodiment, the joint is connected with the transmission arm 9 by a rolling bearing. The inner annular surface of the bearing is excessively engaged with the joint, the outer annular surface of the bearing is interference fit with the transmission arm, and the other end of the transmission 9 arm is connected with a jack mechanism 11 for controlling the opening and closing of the positioning mechanism 7, and the jack mechanism 11 includes a jack And an adjustable bolt 12 connected to the jack, the end of the jack is provided with a positioning claw 13 , the transmission arm 9 is provided with a positioning hole, the transmission arm 9 is horizontally positioned by the guiding shaft 14 , and the transmission arm 9 follows the indexing device 6 Straight up or down, driving the adjustable bolt 12 to rise or fall, the adjustable bolt 12 is locked on the transmission arm 9 by the nut 16, the adjustable bolt is used to lift the ejector rod, and the positioning claw piece 13 is opened or closed, the ejector pin and the positioning claw A bearing 15 is disposed between the sheets 13, and a bearing spring is disposed on the periphery of the bearing 15, and is reset by a compression spring during the lowering of the transmission arm 9. The speed of the motor 5 determines the speed of product transfer and centering. The two stations operate at the same frequency, which increases the coordination of mechanical movements.

The specific workflow of the present invention is as follows:

(1) During use, during normal operation, the motor drives the indexer to move. The indexer output shaft drives the turntable and the transmission arm to rotate at the same time. Since the guide shaft constrains the freedom of the transmission arm in the horizontal direction, the transmission arm can only rise and fall. During the ascending and descending of the transmission arm, the jack is lifted and released, and the spring is reset by the compression spring during the lowering of the transmission arm.

(2) When the angle at which the positioning piece is opened is not correct, the height of the lifting can be adjusted by adjusting the bolt.

(3) For the convenience of adjustment, manual adjustment is required or when the turntable does not need to be rotated, the centering speed is slow. The cylinder can be used instead of the indexer as the actuator. The cylinder pushes the cylinder extension rod, and then pushes the plunger to open and close the positioning claw.

As described above, it is only a preferred embodiment of the present invention, and the present invention cannot be limited thereto. The scope of the claims, therefore, equivalent changes made by the scope of the invention, are still within the scope of the invention.

Claims

- , and demand

A chip LED tape machine product transfer positioning mechanism, comprising a vibration plate, a motor, an indexer, a positioning mechanism, and a product conveying mechanism, wherein: the motor drives the indexer, the indexer output shaft and the product conveying mechanism are connected by a joint, The outer periphery of the joint is provided with a transmission arm and a rotary connection thereof, and the other end of the transmission arm is connected with a jack mechanism for controlling the opening and closing of the positioning mechanism.

2 . The chip type LED braiding machine product conveying and positioning mechanism according to claim 1 , wherein the joint and the transmission arm are connected by a rolling bearing, and the inner annular surface of the bearing is excessively matched with the joint, and the outer ring of the bearing. Face the interference fit of the transmission arm.

3 . The chip type LED braiding machine product conveying and positioning machine according to claim 1 , wherein the ejector mechanism comprises a ejector rod and an adjustable bolt connected to the ejector rod, and the adjustable bolt adopts a nut lock. Tight to the arm.

The device for transporting and positioning a product of a chip type LED braiding machine according to claim 3, wherein: the end of the jack is provided with a positioning claw, and a bearing is arranged between the jack and the positioning claw, A compression spring is provided on the periphery of the bearing.

5 . The chip type LED braider product conveying and positioning mechanism according to claim 1 , wherein the product conveying mechanism comprises a suction tray and a suction head disposed above the suction tray, wherein the suction head is rotated at a high speed. Vacuum tip.

The device for transporting and positioning a product of a chip type LED braiding machine according to claim 1, wherein the transmission arm is provided with a positioning hole, and the positioning hole is provided with a guiding shaft for restraining the horizontal degree of freedom of the transmission arm. .