Dispensing welding head mechanism

Abstract

The utility model discloses a dispensing welding head mechanism which comprises a rack, a Z-axis driving assembly, a swing assembly, a dispensing welding head and a rotary driving assembly. The Z-axis driving assembly comprises a driving piece, an eccentric wheel, a connecting rod and a sliding seat; the driving part is fixedly installed on the rack, the eccentric wheel is installed on an output shaft of the driving part, the sliding base is installed on the rack and can slide in the Z-axis direction relative to the rack, and the two ends of the connecting rod are rotationally connected with the eccentric wheel and the sliding base respectively. The swinging assembly is connected with the sliding seat; the dispensing welding head is fixedly mounted on the swinging assembly; the rotary driving assembly is installed on the rack and used for controlling the swing assembly to drive the adhesive dispensing welding head to reciprocate between the adhesive dispensing position and the avoiding position. According to the dispensing welding head mechanism, the driving piece is adopted to drive the eccentric wheel to rotate so as to drive the sliding seat to slide back and forth in the vertical direction, so that the sliding seat drives the sliding rod and the dispensing welding head to move back and forth between the limiting positions of the dispensing position and the avoiding position in the vertical direction, the moving speed is high, and the repeating precision is high.

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 crank-rocker mechanism involves multiple rods driven in series, resulting in insufficient rigidity of the crank-rocker mechanism itself and a long transmission chain, resulting in low motion 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] The Z-axis driving assembly comprises a driving member, an eccentric wheel, a connecting rod and a sliding seat; the driving member is fixedly mounted on the frame, the eccentric wheel is mounted on the output shaft of the driving member, the sliding seat is mounted on the frame and can slide along the Z-axis direction relative to the frame, and the two ends of the connecting rod are rotatably connected to the eccentric wheel and the sliding seat respectively;

[0009] A swing assembly connected to the sliding seat;

[0010] The dispensing welding head is fixedly installed on the swing assembly;

[0011] The rotation drive assembly is installed on the frame and is used to control the swing assembly to drive the dispensing welding head to reciprocate between the dispensing position and the avoidance position.

[0012] Furthermore, one end of the sliding seat away from the eccentric wheel is rotatably connected to the connecting rod, and an avoidance window for avoiding the connecting rod is provided on the sliding seat.

[0013] Furthermore, a first guide rail is provided on the frame, and a first slider cooperating with the first guide rail is provided on the sliding seat.

[0014] Furthermore, the swing assembly includes a rotating seat, a sliding rod and a swing arm. The rotating seat is rotatably installed on the frame. The rotation drive assembly is drivingly connected to the rotating seat. The sliding rod is installed on the rotating seat and can slide along the Z-axis direction relative to the rotating seat. The top end of the sliding rod is rotatably connected to the sliding seat. The swing arm is fixedly installed at the bottom end of the sliding rod, and the dispensing welding head is provided on the swing arm.

[0015] Furthermore, a second guide rail is provided on the rotating seat, and a second slider cooperating with the second guide rail is provided on the sliding rod.

[0016] Furthermore, a sensor is provided on the frame, and a trigger is provided on the sliding rod or the rotating seat corresponding to the sensor.

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

[0018] Furthermore, the driving member or the rotation drive assembly is a motor.

[0019] The beneficial effect of the present utility model is that: the dispensing welding head mechanism of the present application uses a driving member to drive the eccentric wheel to rotate to drive the sliding seat to reciprocate vertically, so that the sliding seat drives the sliding rod and the dispensing welding head to reciprocate between the extreme positions in the vertical direction at the dispensing position and the avoidance position. The moving speed is fast and the repetition accuracy is high, which is beneficial to improving the dispensing efficiency. Description of the Drawings

[0020] Figure 1 Structural schematic of the dispensing welding head mechanism of Embodiment 1 of the present utility model Figure 1 ;

[0021] Figure 2 Structural schematic of the dispensing welding head mechanism of Embodiment 1 of the present utility model Figure 2 .

[0022] Label description:

[0023] 1. Frame; 11. First guide rail; 12. Inductor; 13. Bearing;

[0024] 2. Driving member;

[0025] 3. Eccentric wheel;

[0026] 4. Connecting rod;

[0027] 5. Sliding seat; 51. Avoidance window; 52. First slider;

[0028] 6. Swing assembly; 61. Rotary seat; 611. Second guide rail; 62. Sliding rod; 621. Second slider; 622. Triggering member; 63. Swing arm;

[0029] 7. Dispensing and soldering head;

[0030] 8. Rotary drive assembly. Detailed implementation manner

[0031] 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 drawings.

[0032] Please refer to Figure 1 and Figure 2 , the dispensing and soldering head mechanism, comprising:

[0033] Frame 1;

[0034] Z-axis drive assembly, including a driving member 2, an eccentric wheel 3, a connecting rod 4 and a sliding seat 5; the driving member 2 is fixedly installed on the frame 1, the eccentric wheel 3 is installed on the output shaft of the driving member 2, the sliding seat 5 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 4 are rotatably connected to the eccentric wheel 3 and the sliding seat 5 respectively;

[0035] Swing assembly 6, the swing assembly 6 is connected to the sliding seat 5;

[0036] Dispensing and soldering head 7, fixedly installed on the swing assembly 6;

[0037] Rotary drive assembly 8, installed on the frame 1, for controlling the swing assembly 6 to drive the dispensing and soldering head 7 to reciprocate between the dispensing position and the avoidance position.

[0038] As can be seen from the above description, the beneficial effect of the present utility model is that: the dispensing and soldering head mechanism of the present application uses the driving member 2 to drive the eccentric wheel 3 to rotate to drive the sliding seat 5 to reciprocate vertically, so that the sliding seat 5 drives the sliding rod 62 and the dispensing and soldering head 7 to reciprocate between the extreme positions in the vertical direction at the dispensing position and the avoidance position, with a fast moving speed and high repeat accuracy, which is beneficial to improving the dispensing efficiency.

[0039] Further, one end of the sliding seat 5 away from the eccentric wheel 3 is rotatably connected to the connecting rod 4, and an avoidance window 51 for avoiding the connecting rod 4 is provided on the sliding seat 5.

[0040] As can be seen from the above description, a partial area of the connecting rod 4 is placed inside the sliding seat 5, which is beneficial to improving the space utilization rate.

[0041] Further, a first guide rail 11 is provided on the frame 1, and a first slider 52 cooperating with the first guide rail 11 is provided on the sliding seat 5.

[0042] As can be seen from the above description, the sliding seat 5 slides relative to the frame 1 along a fixed direction through the first guide rail 11 and the first slider 52. The cooperation of the first guide rail 11 and the first slider 52 can guide the sliding process of the sliding seat 5, which is beneficial to improving the moving accuracy of the sliding seat 5.

[0043] Further, the swing assembly 6 includes a rotating seat 61, a sliding rod 62 and a swing arm 63. The rotating seat 61 is rotatably installed on the frame 1. The rotation driving assembly 8 is drivingly connected to the rotating seat 61. The sliding rod 62 is installed on the rotating seat 61 and can slide along the Z-axis direction relative to the rotating seat 61. The top end of the sliding rod 62 is rotatably connected to the sliding seat 5. The swing arm 63 is fixedly installed at the bottom end of the sliding rod 62, and the dispensing soldering head 7 is provided on the swing arm 63.

[0044] As can be seen from the above description, the sliding rod 62 and the swing arm 63 can be vertically lifted and lowered relative to the frame 1, and can also rotate relative to the frame 1 through the rotating seat 61, so as to facilitate the reciprocating movement of the dispensing soldering head 7 between the dispensing position and the avoidance position.

[0045] Further, a second guide rail 611 is provided on the rotating seat 61, and a second slider 621 cooperating with the second guide rail 611 is provided on the sliding rod 62.

[0046] As can be seen from the above description, the sliding rod 62 slides relative to the rotating seat 61 along a fixed direction through the second guide rail 611 and the second slider 621. The cooperation of the second guide rail 611 and the second slider 621 can guide the sliding process of the sliding rod 62, which is beneficial to improving the moving accuracy of the sliding rod 62.

[0047] Further, a sensor 12 is provided on the frame 1, and a trigger 622 corresponding to the sensor 12 is provided on the sliding rod 62 or the rotating seat 61.

[0048] As can be seen from the above description, the cooperation of the trigger 622 and the sensor 12 can detect whether the sliding rod 62 drives the swing arm 63 back to the avoidance position, and avoid the collision between the swing arm 63 and the crystal picking soldering head mechanism.

[0049] Further, a bearing 13 is provided between the rotating base 61 and the frame 1.

[0050] As can be seen from the above description, the bearing 13 can reduce the frictional force and make the rotation of the rotating base 61 relative to the frame 1 smoother.

[0051] Further, the driving member 2 or the rotary driving assembly 8 is a motor.

[0052] As can be seen from the above description, the driving member 2 or the rotary driving assembly 8 is easily obtainable and convenient for debugging.

[0053] Please refer to Figure 1 and Figure 2 For Embodiment 1 of the present utility model: a dispensing and soldering head mechanism, comprising a frame 1, a Z-axis driving assembly, a swing assembly 6, a dispensing and soldering head 7 and a rotary driving assembly 8; the Z-axis driving assembly includes a driving member 2, an eccentric wheel 3, a connecting rod 4 and a sliding seat 5; the driving member 2 is fixedly installed on the frame 1, the eccentric wheel 3 is installed on the output shaft of the driving member 2, the sliding seat 5 is installed on the frame 1 and is slidable relative to the frame 1 along the Z-axis direction, and two ends of the connecting rod 4 are respectively rotatably connected to the eccentric wheel 3 and the sliding seat 5; the swing assembly 6 is connected to the sliding seat 5; the dispensing and soldering head 7 is fixedly installed on the swing assembly 6; the rotary driving assembly 8 is installed on the frame 1 and is used to control the swing assembly 6 to drive the dispensing and soldering head 7 to reciprocate between a dispensing position and an avoidance position. It is easy to understand that this dispensing and soldering head mechanism uses the driving member 2 to drive the eccentric wheel 3 to rotate so as to drive the sliding seat 5 to reciprocate vertically, thereby enabling the sliding seat 5 to drive the sliding rod 62 and the dispensing and soldering head 7 to reciprocate between the extreme positions in the vertical direction at the dispensing position and the avoidance position. The moving speed is fast and the repeat accuracy is high, which is beneficial to improving the dispensing efficiency.

[0054] The driving member 2 is a motor. The rotary driving assembly 8 includes a transmission rod, a driving motor and a cam. One end of the transmission rod is fixedly connected to the swing assembly 6, and a contact window is provided at the other end of the transmission rod; the driving motor is fixedly installed on the frame, the cam is installed on the output shaft of the driving motor, and the cam is disposed in the contact window; the inner side surface of the contact window is slidably in contact with the cam.

[0055] In order to make the structure of this dispensing and soldering head mechanism more compact and improve the space utilization rate. One end of the sliding seat 5 away from the eccentric wheel 3 is rotatably connected to the connecting rod 4. An avoidance window 51 for avoiding the connecting rod 4 is provided on the sliding seat 5, and a partial area of the connecting rod 4 is disposed in the avoidance window 51.

[0056] A first guide rail 11 is provided on the frame 1, the first guide rail 11 extends along the Z-axis direction, and a first slider 52 cooperating with the first guide rail 11 is provided on the sliding seat 5.

[0057] The swing assembly 6 includes a rotating base 61, a sliding rod 62, and a swing arm 63. The rotating base 61 is rotatably mounted on the frame 1, and the rotation driving assembly 8 is drivingly connected to the rotating base 61. The sliding rod 62 is mounted on the rotating base 61 and can slide relative to the rotating base 61 along the Z-axis direction. The top end of the sliding rod 62 is rotatably connected to the sliding seat 5, and the swing arm 63 is fixedly mounted at the bottom end of the sliding rod 62. The dispensing soldering head 7 is provided on the swing arm 63. Specifically, the length direction of the sliding rod 62 is parallel to the vertical direction, and the rotating base 61 rotates relative to the frame 1 around the vertical direction; the length direction of the swing arm 63 is parallel to the horizontal direction.

[0058] Preferably, in order to make the rotation of the rotating base 61 relative to the frame 1 smoother, a bearing 13 is provided between the rotating base 61 and the frame 1.

[0059] A second guide rail 611 is provided on the rotating base 61, and a second slider 621 that cooperates with the second guide rail 611 is provided on the sliding rod 62. Specifically, the sliding rod 62 penetrates through the rotating base 61, and second guide rails 611 are respectively provided on two inner side surfaces of the rotating base 61. The second guide rails 611 extend along the vertical direction, and a second slider 621 is provided on each side of the sliding rod 62.

[0060] An inductor 12 is provided on the frame 1, and a trigger 622 corresponding to the inductor 12 is provided on the sliding rod 62 or the rotating base 61. Specifically, when the sliding rod 62 drives the dispensing soldering head 7 on the swing arm 63 to move to the avoidance position under the drive of the rotation driving assembly 8, the trigger 622 triggers the inductor 12. The inductor 12 is preferably an infrared sensor.

[0061] In summary, the dispensing soldering head mechanism provided by the present utility model uses a driving member to drive an eccentric wheel to rotate, so as to drive the sliding seat to reciprocate vertically, thereby causing the sliding seat to drive the sliding rod and the dispensing soldering head to reciprocate between the extreme positions in the vertical direction at the dispensing position and the avoidance position. The moving speed is fast and the repetition accuracy is high, which is beneficial to improving the dispensing efficiency. The trigger cooperates with the inductor to be able to detect whether the sliding rod drives the swing arm back to the avoidance position, avoiding collision between the swing arm and the crystal picking soldering head mechanism.

[0062] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the related technical fields, are similarly included in the patent protection scope of the present utility model.

Claims

1. The dispensing welding head mechanism is characterized by: include: frame; A Z-axis drive assembly, including a drive member, an eccentric wheel, a connecting rod and a sliding seat; The driving member is fixedly mounted on the frame, the eccentric wheel is mounted on the output shaft of the driving member, the sliding seat is mounted on the frame and can slide along the Z-axis direction relative to the frame, and the two ends of the connecting rod are rotatably connected to the eccentric wheel and the sliding seat respectively; A swing assembly connected to the sliding seat; The dispensing welding head is fixedly mounted on the swing assembly; The rotary drive assembly is installed on the frame and is used to control the swing assembly to drive the dispensing welding head to reciprocate between the dispensing position and the avoidance position.

2. The dispensing welding head mechanism according to claim 1 is characterized in that: One end of the sliding seat away from the eccentric wheel is rotatably connected to the connecting rod, and a avoidance window for avoiding the connecting rod is provided on the sliding seat.

3. The dispensing welding head mechanism according to claim 1 is characterized in that: The frame is provided with a first guide rail, and the sliding seat is provided with a first sliding block matched with the first guide rail.

4. 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 rotating drive assembly is drivingly connected to the rotating seat. The sliding rod is installed on the rotating seat and can slide along the Z-axis direction relative to the rotating seat. The top end of the sliding rod is rotatably connected to the sliding seat. The swing arm is fixedly mounted on the bottom end of the sliding rod. The dispensing welding head is arranged on the swing arm.

5. The dispensing welding head mechanism according to claim 4 is characterized in that: The rotating seat is provided with a second guide rail, and the sliding rod is provided with a second sliding block matched with the second guide rail.

6. The dispensing welding head mechanism according to claim 4 is characterized in that: The frame is provided with a sensor, and the sliding rod or the rotating seat is provided with a triggering member corresponding to the sensor.

7. The dispensing welding head mechanism according to claim 4 is characterized in that: A bearing is arranged between the rotating seat and the frame.

8. The dispensing welding head mechanism according to claim 1 is characterized in that: The driving member or the rotating driving assembly is a motor.

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