Dispensing welding head mechanism

Abstract

The utility model discloses a dispensing welding head mechanism which comprises a rack, a swing assembly, a dispensing welding head, a Z-axis driving assembly and a rotary driving assembly. The swing assembly is installed on the rack and can rotate relative to the rack. The dispensing welding head is fixedly mounted on the swinging assembly; the Z-axis driving assembly is installed on the rack and used for controlling the swing assembly to reciprocate in the vertical direction. The rotary driving assembly comprises a transmission rod, a driving piece and a cam, one end of the transmission rod is fixedly connected with the swing assembly, and the other end of the transmission rod is provided with a contact window; the driving piece is fixedly installed on the rack, the cam is installed on an output shaft of the driving piece, and the cam is arranged in the contact window; the inner side face of the contact window slidably abuts against the cam. According to the dispensing welding head mechanism, it is easy to understand, the cams alternately abut against the two inner side faces of the transmission rod, so that the transmission rod drives the swing assembly to move between the dispensing position and the avoiding position in a reciprocating mode, the moving speed is high, the repeating precision is high, and the dispensing efficiency can be improved easily.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor solid crystal, in particular to a glue dispensing welding head mechanism. Background Art

[0002] The crystal welding head mechanism is one of the important parts of the crystal bonding machine. The function of the crystal welding head mechanism is to cooperate with the ejector mechanism and the vacuum mechanism to peel off the granular chips on the WAFER ring one by one, and accurately place and fix them to the specified position of the semiconductor bracket coated with glue. Before the crystal welding head mechanism peels off the chip and places it at the specified position of the semiconductor bracket, it is necessary to use the glue welding head movement mechanism to apply glue at the specified position of the semiconductor bracket, and then the glue welding head movement mechanism moves to other positions to provide crystal bonding space for the crystal welding head mechanism.

[0003] The glue applied by the dispensing welding head motion mechanism on the semiconductor bracket cannot be exposed to the air for too long. After applying the glue at a certain position of the semiconductor bracket, the chip needs to be bonded immediately, otherwise the chip bonding stability will be reduced. The dispensing welding head motion mechanism has the characteristics of high speed, high repeatability and large inertial force, and at the same time needs to meet the requirements of high positioning accuracy, small vibration displacement and low pressure. The dispensing welding head motion mechanism needs to move back and forth between the dispensing position and the avoidance position accurately and at high speed to complete the dispensing action. During the operation, the dispensing welding head motion mechanism is generally driven by two motors. One of the motors drives the dispensing welding head to swing back and forth in the θ-axis direction, and the other motor drives the dispensing welding head to reciprocate in the Z-axis direction through the crank rocker mechanism.

[0004] With regard to the above-mentioned technical means, the use of a motor to drive the dispensing welding head to perform angular reciprocating swing has the problem of high requirements for motor braking, which is not conducive to ensuring repeatability accuracy. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a dispensing welding head motion mechanism with high speed and high repetition accuracy.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a dispensing welding head mechanism, comprising:

[0007] frame;

[0008] A swing assembly is mounted on the frame and is rotatable relative to the frame;

[0009] The dispensing welding head is fixedly mounted on the swing assembly;

[0010] A Z-axis driving assembly, mounted on the frame, for controlling the swing assembly to reciprocate in the vertical direction;

[0011] The rotary drive assembly comprises a transmission rod, a driving member and a cam, wherein one end of the transmission rod is fixedly connected to the swing assembly, and the other end of the transmission rod is provided with a contact window; the driving member is fixedly mounted on a frame, the cam is mounted on an output shaft of the driving member, and the cam is arranged in the contact window; the inner side surface of the contact window can slidably contact with the cam.

[0012] Furthermore, a sensor is provided on the frame, and a trigger is provided on the transmission rod corresponding to the sensor.

[0013] Furthermore, the transmission rod includes a rod body and a limit block, the rod body is provided with a notch connecting its top surface and side surface, the limit block is detachably connected to the rod body, and the limit block closes the side opening of the rod body to form the contact window.

[0014] Furthermore, the driving member or the Z-axis driving assembly is a motor.

[0015] Furthermore, the swing assembly includes a rotating seat, a sliding rod and a swing arm. The rotating seat can be rotatably mounted on the frame, the transmission rod is fixedly connected to the rotating seat, the sliding rod is transmission-connected to the Z-axis drive assembly, the sliding rod is mounted on the rotating seat and can slide along the Z-axis direction relative to the rotating seat, and the swing arm is fixedly mounted on the bottom end of the sliding rod.

[0016] Furthermore, the rotating seat is provided with a linear guide rail, and the sliding rod is provided with a sliding block that cooperates with the linear guide rail.

[0017] Furthermore, a bearing is provided between the rotating seat and the frame.

[0018] The beneficial effect of the utility model is that the dispensing welding head mechanism of the present application adopts a cam to alternately contact the two inner sides of the transmission rod, so that the transmission rod drives the swing component to move back and forth between the dispensing position and the avoidance position, with fast movement speed and high repetition accuracy, which is beneficial to improving the dispensing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the dispensing welding head mechanism of the first embodiment of the utility model;

[0020] Figure 2 This is a schematic structural diagram of a transmission rod and a cam in a dispensing welding head mechanism of the first embodiment of the utility model.

[0021] Description of labels:

[0022] 1. Frame; 11. Sensor; 12. Bearing;

[0023] 2. Swing assembly; 21. Rotating base; 211. Linear guide rail; 22. Sliding rod; 221. Slide block; 23. Swing arm;

[0024] 3. Glue-dot welding head;

[0025] 4. Z-axis drive assembly;

[0026] 5. Rotation drive assembly; 51. Transmission rod; 511. Rod body; 512. Limit block; 513. Contact window; 514. Trigger; 52. Driving part; 53. Cam. Detailed implementation manners

[0027] To describe in detail the technical content, achieved purpose and effects of the present utility model, the following is described in conjunction with the implementation manners and with reference to the accompanying drawings.

[0028] Please refer to Figure 1 and Figure 2 , the glue-dot welding head mechanism, comprising:

[0029] Frame 1;

[0030] Swing assembly 2, the swing assembly 2 is installed on the frame 1 and is rotatable relative to the frame 1;

[0031] Glue-dot welding head 3, fixedly installed on the swing assembly 2;

[0032] Z-axis drive assembly 4, installed on the frame 1, for controlling the swing assembly 2 to reciprocate along the vertical direction;

[0033] Rotation drive assembly 5, including a transmission rod 51, a driving part 52 and a cam 53, one end of the transmission rod 51 is fixedly connected to the swing assembly 2, and a contact window 513 is provided at the other end of the transmission rod 51; the driving part 52 is fixedly installed on the frame 1, the cam 53 is installed on the output shaft of the driving part 52, and the cam 53 is arranged in the contact window 513; the inner side surface of the contact window 513 is slidably abutted against the cam 53.

[0034] As can be seen from the above description, the beneficial effect of the present utility model is that: the glue-dot welding head mechanism of the present application uses the cam 53 to alternately abut against the two inner side surfaces of the transmission rod 51, so as to drive the swing assembly 2 to reciprocate between the glue-dot position and the avoidance position by the transmission rod 51, with a fast moving speed and high repeat accuracy, which is beneficial to improving the glue-dot efficiency.

[0035] Furthermore, a sensor 11 is provided on the frame 1, and a trigger 514 corresponding to the sensor 11 is provided on the transmission rod 51.

[0036] As described above, the trigger member 514 and the sensor 11 cooperate to detect when the swing assembly 2 returns to the avoidance position, preventing the swing assembly 2 from colliding with the crystal picking and soldering head mechanism.

[0037] Further, the transmission rod 51 includes a rod body 511 and a limit block 512. The rod body 511 is provided with a notch communicating its top surface and side surface. The limit block 512 is detachably connected to the rod body 511, and the limit block 512 closes the side opening of the rod body 511 to form the contact window 513.

[0038] As described above, by disassembling and installing limit blocks 512 of different models, the swing amplitude of the transmission rod 51 can be changed, thereby changing the swing stroke of the swing assembly 2.

[0039] Further, the driving member 52 or the Z-axis driving assembly 4 is a motor.

[0040] As described above, the driving member 52 or the Z-axis driving assembly 4 is easily obtainable and convenient for debugging.

[0041] Further, the swing assembly 2 includes a rotating seat 21, a sliding rod 22, and a swing arm 23. The rotating seat 21 is rotatably mounted on the frame 1. The transmission rod 51 is fixedly connected to the rotating seat 21. The sliding rod 22 is in transmission connection with the Z-axis driving assembly 4. The sliding rod 22 is mounted on the rotating seat 21 and is slidable relative to the rotating seat 21 in the Z-axis direction. The swing arm 23 is fixedly mounted at the bottom end of the sliding rod 22, and the dispensing soldering head 3 is provided on the swing arm 23.

[0042] As described above, the structure of the swing assembly 2 is simple. The sliding rod 22 and the swing arm 23 can be vertically lifted and lowered relative to the frame 1, and can also rotate relative to the frame 1 through the rotating seat 21, facilitating the reciprocating movement of the dispensing soldering head 3 between the dispensing position and the avoidance position.

[0043] Further, a linear guide rail 211 is provided on the rotating seat 21, and a slider 221 cooperating with the linear guide rail 211 is provided on the sliding rod 22.

[0044] As described above, the sliding rod 22 slides relative to the rotating seat 21 in a fixed direction through the linear guide rail 211 and the second slider 221. The cooperation of the second guide rail and the second slider 221 can guide the sliding process of the sliding rod 22, which is beneficial to improving the moving accuracy of the sliding rod 22.

[0045] Further, a bearing 12 is provided between the rotating seat 21 and the frame 1.

[0046] As described above, the bearing 12 can reduce friction, making the rotation of the rotating seat 21 relative to the frame 1 smoother.

[0047] Please refer to Figure 1 and Figure 2 For the first embodiment of the present utility model: a dispensing soldering head mechanism, which includes a frame 1, a swing assembly 2, a dispensing soldering head 3, a Z-axis drive assembly 4 and a rotation drive assembly 5; the swing assembly 2 is installed on the frame 1 and is rotatable relative to the frame 1; the dispensing soldering head 3 is fixedly installed on the swing assembly 2; the Z-axis drive assembly 4 is installed on the frame 1 and is used to control the reciprocating movement of the swing assembly 2 along the vertical direction; the rotation drive assembly 5 includes a transmission rod 51, a driving member 52 and a cam 53. One end of the transmission rod 51 is fixedly connected to the swing assembly 2, and a contact window 513 is provided at the other end of the transmission rod 51; the driving member 52 is fixedly installed on the frame 1, the cam 53 is installed on the output shaft of the driving member 52, and the cam 53 is arranged in the contact window 513; the inner side surface of the contact window 513 is slidably abutted against the cam 53. It is easy to understand that the dispensing soldering head mechanism of the present application uses the cam 53 to alternately abut against the two inner side surfaces of the transmission rod 51, so as to drive the swing assembly 2 to reciprocate between the dispensing position and the avoidance position, with a fast moving speed and high repeat accuracy, which is beneficial to improving the dispensing efficiency.

[0048] The driving member 52 is preferably a motor. The Z-axis drive assembly 4 includes a driving motor, an eccentric wheel, a connecting rod and a sliding seat 5; the driving member 52 is fixedly installed on the frame 1, the eccentric wheel is installed on the output shaft of the driving member 52, the sliding seat is installed on the frame 1 and is slidable relative to the frame 1 along the Z-axis direction, and both ends of the connecting rod are respectively rotatably connected to the eccentric wheel and the sliding seat.

[0049] An inductor 11 is provided on the frame 1, and a trigger member 514 corresponding to the inductor 11 is provided on the transmission rod 51. Specifically, when the transmission rod 51 drives the dispensing soldering head 3 on the swing assembly 2 to move to the avoidance position under the drive of the driving member 52, the trigger member 514 triggers the inductor 11. The inductor 11 is preferably an infrared sensor.

[0050] The transmission rod 51 includes a rod body 511 and a limit block 512. A notch communicating with its top surface and side surface is provided on the rod body 511. The limit block 512 is detachably connected to the rod body 511, and the limit block 512 closes the side opening of the rod body 511 to form a contact window 513. Specifically, the limit block 512 and the rod body 511 are connected and fixed by screws. It is easy to understand that by disassembling and installing different models of limit blocks 512, the swing amplitude of the transmission rod 51 can be changed, so as to change the swing stroke of the swing assembly 2.

[0051] The swing assembly 2 includes a rotating seat 21, a sliding rod 22 and a swing arm 23. The rotating seat 21 is rotatably mounted on the frame 1. The transmission rod 51 is fixedly connected to the rotating seat 21. The sliding rod 22 is transmission-connected to the Z-axis driving assembly 4. The sliding rod 22 is mounted on the rotating seat 21 and can slide along the Z-axis direction relative to the rotating seat 21. The swing arm 23 is fixedly mounted at the bottom end of the sliding rod 22. Specifically, the length direction of the sliding rod 22 is parallel to the vertical direction, and the rotating seat 21 rotates around the vertical direction relative to the frame 1; the length direction of the swing arm 23 is parallel to the horizontal direction.

[0052] The rotating seat 21 is provided with a linear guide rail 211, and the sliding rod 22 is provided with a slider 221 that cooperates with the linear guide rail 211. Specifically, the sliding rod 22 is arranged through the rotating seat 21, and the two inner sides of the rotating seat 21 are respectively provided with linear guide rails 211, and the linear guide rails 211 extend in the vertical direction, and a slider 221 is respectively provided on both sides of the sliding rod 22.

[0053] Preferably, in order to make the rotating seat 21 rotate more smoothly relative to the frame 1, a bearing 12 is provided between the rotating seat 21 and the frame 1.

[0054] To sum up, the dispensing welding head mechanism provided by the utility model adopts a cam to alternately contact the two inner sides of the transmission rod, so that the transmission rod drives the swing component to move back and forth between the dispensing position and the avoidance position. The movement speed is fast and the repeatability is high, which is beneficial to improving the dispensing efficiency.

[0055] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. The dispensing welding head mechanism is characterized by: include: frame; A swing assembly is mounted on the frame and is rotatable relative to the frame; The dispensing welding head is fixedly mounted on the swing assembly; A Z-axis driving assembly, mounted on the frame, for controlling the swing assembly to reciprocate in the vertical direction; The rotary drive assembly comprises a transmission rod, a driving member and a cam, wherein one end of the transmission rod is fixedly connected to the swing assembly, and the other end of the transmission rod is provided with a contact window; the driving member is fixedly mounted on a frame, the cam is mounted on an output shaft of the driving member, and the cam is arranged in the contact window; the inner side surface of the contact window can slidably contact with the cam.

2. The dispensing welding head mechanism according to claim 1 is characterized in that: The frame is provided with a sensor, and the transmission rod is provided with a triggering member corresponding to the sensor.

3. The dispensing welding head mechanism according to claim 1 is characterized in that: The transmission rod comprises a rod body and a limit block. The rod body is provided with a notch connecting its top surface and side surface. The limit block is detachably connected to the rod body. The limit block closes the side opening of the rod body to form the contact window.

4. The dispensing welding head mechanism according to claim 1 is characterized in that: The driving member or the Z-axis driving assembly is a motor.

5. The dispensing welding head mechanism according to claim 1 is characterized in that: The swing assembly includes a rotating seat, a sliding rod and a swing arm. The rotating seat can be rotatably mounted on the frame. The transmission rod is fixedly connected to the rotating seat. The sliding rod is transmission-connected to the Z-axis driving assembly. The sliding rod is mounted on the rotating seat and can slide along the Z-axis direction relative to the rotating seat. The swing arm is fixedly mounted on the bottom end of the sliding rod, and the dispensing welding head is arranged on the swing arm.

6. The dispensing welding head mechanism according to claim 5 is characterized in that: The rotating seat is provided with a linear guide rail, and the sliding rod is provided with a sliding block matched with the linear guide rail.

7. The dispensing welding head mechanism according to claim 5, characterized in that: A bearing is arranged between the rotating seat and the frame.

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