Welding head fixture

Abstract

This invention discloses a welding head fixing device, including a first driving mechanism and a second driving mechanism. The first driving mechanism includes a first driving member, a first fixed base, a first locking assembly, a first transmission assembly, and a connecting assembly for connecting the welding head. The second driving mechanism includes a second driving member and a second transmission assembly. The first locking assembly has a transmission part, which is eccentrically arranged relative to the output shaft of the first driving member. One end of the first transmission assembly is fixedly connected to the transmission part, and the other end of the first transmission assembly is slidably disposed up and down relative to the first fixed base. The connecting assembly is fixedly connected to the end of the first transmission assembly away from the transmission part. One end of the second transmission assembly is fixedly connected to the output shaft of the second driving member, and the other end of the second transmission assembly is fixedly connected to the connecting assembly. Its structure is simple, and it can ensure driving accuracy and good stability even under high-speed operation.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a welding head fixing device. Background Art

[0002] As people's requirements for LED lighting color and display quality become higher and higher, LED chips are getting smaller and smaller, and the quality requirements for LED die bonding are also getting higher and higher. Therefore, LED packaging factories have put forward higher requirements on various equipment manufacturers, requiring the speed of LED die extraction and die bonding to be faster and faster, and at the same time, they also require the LED die extraction and die bonding process to be more and more stable. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a welding head fixing device with high driving precision and good stability.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A welding head fixing device comprises a first driving mechanism for driving the welding head to move up and down and a second driving mechanism for driving the welding head to rotate, the first driving mechanism comprises a first driving member, the second driving mechanism comprises a second driving member, the first driving mechanism also comprises a first fixed seat, a first locking assembly, a first transmission assembly and a connecting assembly for connecting the welding head, the first driving member is fixedly connected to the first fixed seat, the first locking assembly is fixedly sleeved on the output shaft of the first driving member, a transmission part is provided on the first locking assembly, the transmission part is eccentrically arranged relative to the output shaft of the first driving member, one end of the first transmission member assembly is fixedly connected to the transmission part, the other end of the first transmission assembly can be slid up and down relative to the first fixed seat, and the connecting assembly is fixedly connected to an end of the first transmission assembly away from the transmission part; the second driving mechanism also comprises a second transmission assembly, one end of the second transmission assembly is fixedly connected to the output shaft of the second driving member, and the other end of the second transmission assembly is fixedly connected to the connecting assembly.

[0006] The beneficial effects of the present invention are as follows: the first driving mechanism can drive the transmission part to make circular motion by driving the first locking component to rotate, one end of the first transmission component follows the transmission part to make circular motion, and the other end of the first transmission component drives the connecting component to move up and down, thereby driving the welding head to move up and down; the second driving mechanism drives the second transmission component to rotate by the rotation of the second driving member, thereby driving the connecting component to rotate, and realizing the rotation of the welding head. The welding head fixing device of the present invention has a simple structure, avoids the use of couplings and ball bearings for transmission, has a small stacking tolerance, can ensure its driving accuracy under high-speed operation, and has good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the overall structure of a welding head fixing device according to Embodiment 1 of the present invention;

[0008] Figure 2 It is a structural exploded diagram of the first driving mechanism in the welding head fixing device according to the first embodiment of the present invention;

[0009] Figure 3 It is a structural exploded diagram of the second driving mechanism in the welding head fixing device of the first embodiment of the present invention;

[0010] Figure 4 It is a cross-sectional view of the welding head fixing device according to the first embodiment of the present invention.

[0011] Description of labels:

[0012] 1. first driving mechanism; 11. first driving member; 12. first fixing seat; 13. first locking member; 131. transmission part; 14. second locking member; 15. first transmission member; 16. second transmission member; 17. third transmission member; 18. first sensing sheet; 19. first detecting member; 110. first connecting member; 111. bearing;

[0013] 112. Fixed axis;

[0014] 2. Second driving mechanism; 21. Second driving member; 22. Second fixing seat; 23. Second transmission assembly; 24. Second fixing member; 25. Second sliding assembly; 26. Second sensing sheet; 27. Second detecting member. DETAILED DESCRIPTION

[0015] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0016] The key concept of the present invention is that the first driving mechanism can drive the transmission part to make circular motion by driving the first locking component to rotate, one end of the first transmission component follows the transmission part to make circular motion, and the other end of the first transmission component drives the connecting component to move up and down, thereby driving the welding head to move up and down; the second driving mechanism drives the second transmission component to rotate by the rotation of the second driving member, thereby driving the connecting component to rotate, and realizing the rotation of the welding head. It has a simple structure, high driving precision and good stability.

[0017] Please refer to Figures 1 to 4, a welding head fixing device, comprising a first driving mechanism 1 for driving the welding head to move up and down and a second driving mechanism 2 for driving the welding head to rotate, the first driving mechanism 1 comprising a first driving member 11, the second driving mechanism 2 comprising a second driving member 21, the first driving mechanism 1 also comprises a first fixed seat 12, a first locking assembly, a first transmission assembly and a connecting assembly for connecting the welding head, the first driving member 11 is fixedly connected to the first fixed seat 12, the first locking assembly is fixedly sleeved on the output shaft of the first driving member 11, a transmission part 131 is provided on the first locking assembly, the transmission part 131 is eccentrically arranged relative to the output shaft of the first driving member 11, one end of the first transmission member 15 assembly is fixedly connected to the transmission part 131, the other end of the first transmission assembly can be slidably arranged up and down relative to the first fixed seat 12, and the connecting assembly is fixedly connected to one end of the first transmission assembly away from the transmission part 131; the second driving mechanism 2 also comprises a second transmission assembly 23, one end of the second transmission assembly 23 is fixedly connected to the output shaft of the second driving member 21, and the other end of the second transmission assembly 23 is fixedly connected to the connecting assembly.

[0018] From the above description, it can be seen that the beneficial effects of the present invention are: the first driving mechanism can drive the transmission part to make circular motion by driving the first locking component to rotate, one end of the first transmission component follows the transmission part to make circular motion, and the other end of the first transmission component drives the connecting component to move up and down, thereby driving the welding head to move up and down; the second driving mechanism drives the second transmission component to rotate by the rotation of the second driving member, thereby driving the connecting component to rotate and realizing the rotation of the welding head. The welding head fixing device of the present invention has a simple structure, avoids the use of couplings and ball bearings for transmission, has a small stacking tolerance, can ensure its driving accuracy under high-speed operation, and has good stability.

[0019] Furthermore, the connecting assembly includes a first connecting member 110, a bearing 111 and a fixed shaft 112 for connecting a welding head, the first connecting member 110 is fixedly sleeved on the fixed shaft 112, the outer ring of the bearing 111 is fixedly connected to the first transmission assembly, and the inner ring of the bearing 111 is fixedly connected to the first connecting member 110.

[0020] It can be seen from the above description that the use of bearings on the connecting assembly allows the first driving mechanism to drive the fixed shaft to move up and down through the bearings without affecting the second driving mechanism driving the fixed shaft to rotate.

[0021] Furthermore, the first transmission assembly includes a first transmission member 15, a second transmission member 16 and a third transmission member 17, one end of the first transmission member 15 is fixedly connected to the transmission part 131, the second transmission member 16 is respectively fixedly connected to the other end of the first transmission member 15 away from the transmission part 131 and the third transmission member 17, and the second transmission member 16 can be slidably arranged up and down relative to the first fixed seat 12, and the bearing 111 is fixedly arranged in the third transmission member 17.

[0022] It can be seen from the above description that the bearing is fixedly arranged in the third transmission member, which has a good fixing effect and occupies a small space, and the bearing and the third transmission member can be fixedly connected by means of interference fit.

[0023] Furthermore, the second transmission member 16 is a hollow structure, and the middle portion of the first transmission member 15 is located inside the second transmission member 16 .

[0024] It can be seen from the above description that disposing the first transmission member partially inside the second transmission member can save space and reduce the overall volume of the welding head fixing device.

[0025] Furthermore, the first locking assembly includes a first locking member 13 and a second locking member 14 matched with the first locking member 13 , the first locking member 13 is fixedly connected to the second locking member 14 , and the first locking member 13 is provided with the transmission part 131 .

[0026] From the above description, it can be seen that the first locking member is an eccentric structure. The first locking member and the second locking member can be fixedly connected by screws, etc. The first locking assembly avoids the use of couplings and bearings, reduces the stacking tolerance, and can achieve high-speed, stable and non-deviation movement.

[0027] Furthermore, the first driving mechanism 1 also includes a first detection component, which includes a first sensing sheet 18 and a first detection member 19, the first sensing sheet 18 is fixedly connected to the first locking member 13, the first detection member 19 is fixedly connected to the first fixing seat 12, and the first detection member 19 is arranged corresponding to the first sensing sheet 18.

[0028] From the above description, it can be seen that the first detection component can be used to detect whether the welding head moves up and down in place. The first detection component is provided with a transmitting end and a receiving end. The first sensing piece can rotate with the rotation of the first locking piece. When the first sensing piece is located between the transmitting end and the receiving end, the receiving end cannot receive the signal from the transmitting end. When the first sensing piece rotates to other positions, the receiving end can receive the signal from the transmitting end.

[0029] Furthermore, the second driving mechanism 2 also includes a second fixing member 24 and a second sliding assembly 25. The second sliding assembly 25 can be slid up and down relative to the end of the second transmission assembly 23 away from the second driving member 21. The second fixing member 24 is fixedly connected to the second sliding assembly 25 and the fixed shaft 112 respectively.

[0030] It can be seen from the above description that when the first driving mechanism drives the fixed shaft to move up and down, the second sliding component will move up and down relative to the second transmission component.

[0031] Furthermore, the second driving mechanism 2 further includes a second fixing seat 22 , and the second driving member 21 is fixedly connected to the second fixing seat 22 .

[0032] It can be seen from the above description that providing the second fixing seat can improve the installation stability of the second driving member.

[0033] Furthermore, the second driving mechanism 2 also includes a second detection component, which includes a second sensing sheet 26 and a second detection member 27, the second sensing sheet 26 is fixedly connected to the second transmission component 23, the second detection member 27 is fixedly connected to the second fixed seat 22, and the second detection member 27 is correspondingly arranged with the second sensing sheet 26.

[0034] It can be seen from the above description that the second detection component can be provided to detect whether the fixed shaft is rotated in place.

[0035] Furthermore, the first driving member 11 and the second driving member 21 are both motors.

[0036] It can be seen from the above description that both the first driving member and the second driving member adopt motors, which have high driving precision and are easy to control.

[0037] Please refer to Figures 1 to 4 , Embodiment 1 of the present invention is:

[0038] like Figure 1 The welding head fixing device shown comprises a first driving mechanism 1 for driving the welding head to move up and down and a second driving mechanism 2 for driving the welding head to rotate.

[0039] like Figure 2As shown, the first driving mechanism 1 includes a first driving member 11, a first fixed seat 12, a first locking assembly, a first transmission assembly and a connecting assembly for connecting a welding head, and the first driving member 11 is a motor. The first driving member 11 is fixedly connected to the first fixed seat 12, and a specific tooling can be used during installation to ensure the installation accuracy between the first driving member 11 and the first fixed seat 12. The first locking assembly is fixedly sleeved on the output shaft of the first driving member 11, and a transmission part 131 is provided on the first locking assembly, and the transmission part 131 is eccentrically arranged relative to the output shaft of the first driving member 11. In this embodiment, the first locking assembly includes a first locking member 13 and a second locking member 14 matched with the first locking member 13, the first locking member 13 is fixedly connected to the second locking member 14, the first locking member 13 is provided with the transmission part 131, and the eccentric distance of the transmission part 131 can be set as needed. One end of the first transmission member 15 assembly is fixedly connected to the transmission part 131, and the other end of the first transmission assembly can be slid up and down relative to the first fixed seat 12, and the connecting assembly is fixedly connected to the end of the first transmission assembly away from the transmission part 131. In this embodiment, the first transmission assembly includes a first transmission member 15, a second transmission member 16 and a third transmission member 17, one end of the first transmission member 15 is fixedly connected to the transmission part 131, the second transmission member 16 is fixedly connected to the other end of the first transmission member 15 away from the transmission part 131 and the third transmission member 17 respectively, and the second transmission member 16 can be slid up and down relative to the first fixed seat 12. Specifically, a guide block can be provided on the first fixed seat 12, and a slider can be provided on the second transmission member 16, and the guide block and the slider can cooperate with each other to achieve up and down sliding. Preferably, the second transmission member 16 is a hollow structure, and the middle part of the first transmission member 15 is located in the second transmission member 16, which can save space. The first driving mechanism 1 further includes a first detection assembly, which includes a first sensing sheet 18 and a first detection member 19. The first sensing sheet 18 is fixedly connected to the first locking member 13, and the first detection member 19 is fixedly connected to the first fixing seat 12, and the first detection member 19 is arranged correspondingly to the first sensing sheet 18. When the first locking member 13 rotates, the first sensing sheet 18 can be driven to rotate, and when the first sensing sheet 18 passes through the first detection member 19, the signal of the first detection member 19 will change, thereby achieving the detection purpose.

[0040] like Figure 3As shown, the connection assembly includes a first connection member 110, a bearing 111 and a fixed shaft 112 for connecting the welding head, the first connection member 110 is fixedly sleeved on the fixed shaft 112, the outer ring of the bearing 111 is fixedly connected to the first transmission assembly, and the inner ring of the bearing 111 is fixedly connected to the first connection member 110, so that the first drive mechanism 1 can drive the fixed shaft 112 to move up and down, and does not affect the second drive mechanism 2 to drive the fixed shaft 112 to rotate. Specifically, the bearing 111 is fixedly arranged in the third transmission member 17, and the bearing 111 and the third transmission member 17 can be fixedly connected by interference fit. The number of bearings 111 can be two, and a bearing cover for fixing the bearing 111 is provided at the bottom of the third transmission member 17.

[0041] like Figure 4 As shown, the second drive mechanism 2 includes a second drive member 21, a second fixed seat 22, a second transmission assembly 23, a second fixed member 24 and a second sliding assembly 25, wherein the second drive member 21 is a motor, and the second drive member 21 is fixedly connected to the second fixed seat 22. During assembly, the installation accuracy can be ensured by special tooling. One end of the second transmission assembly 23 is fixedly connected to the output shaft of the second drive member 21, and the second sliding assembly 25 is slidably arranged relative to the end of the second transmission assembly 23 away from the second drive member 21, and the second fixed member 24 is fixedly connected to the second sliding assembly 25 and the fixed shaft 112 respectively. Specifically, a guide rail can be arranged on the first transmission assembly, and a slider can be arranged on the second fixed member 24, and the guide rail and the slider cooperate with each other to achieve up and down sliding. In this embodiment, the second drive mechanism 2 also includes a second detection assembly, and the second detection assembly includes a second sensing sheet 26 and a second detection member 27, wherein the second sensing sheet 26 is fixedly connected to the second transmission assembly 23, the second detection member 27 is fixedly connected to the second fixed seat 22, and the second detection member 27 is arranged corresponding to the second sensing sheet 26. The second driving member 21 can drive the second transmission assembly 23 to rotate, thereby driving the second sensing piece 26 to rotate. When the second sensing piece 26 passes through the second detecting member 27, it will cause the signal of the second detecting member 27 to change, thereby achieving the detection purpose.

[0042] The working principle of the welding head fixing device of this embodiment is: the first driving mechanism 1 can drive the transmission part 131 to make a circular motion by driving the first locking assembly to rotate, one end of the first transmission member 15 follows the transmission part 131 to make a circular motion, and the other end of the first transmission member 15 drives the third transmission member 17 to move up and down through the second transmission member 16, and the third transmission member 17 drives the fixed shaft 112 to move up and down through the bearing 111, thereby driving the welding head to move up and down. While the fixed shaft 112 moves up and down, the second fixed member 24 and the second sliding assembly 25 will also move up and down with the fixed shaft 112; the second driving mechanism 2 drives the second transmission assembly 23 to rotate through the rotation of the second driving member 21, and the second transmission assembly 23 drives the fixed shaft 112 to rotate through the second sliding assembly 25 and the second fixed member 24 to realize the rotation of the welding head. Due to the setting of the bearing 111, when the fixed shaft 112 rotates, other components of the second driving mechanism 2 will not rotate with the fixed shaft 112.

[0043] In summary, the welding head fixing device provided by the present invention has a simple structure and can ensure its driving accuracy and good stability under high-speed operation.

[0044] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A welding head fixing device, comprising a first driving mechanism for driving the welding head to move up and down and a second driving mechanism for driving the welding head to rotate, wherein the first driving mechanism comprises a first driving member, and the second driving mechanism comprises a second driving member, characterized in that: The first driving mechanism further includes a first fixing seat, a first locking assembly, a first transmission assembly and a connecting assembly for connecting the welding head, the first driving member is fixedly connected to the first fixing seat, the first locking assembly is fixedly sleeved on the output shaft of the first driving member, a transmission part is provided on the first locking assembly, the transmission part is eccentrically arranged relative to the output shaft of the first driving member, one end of the first transmission assembly is fixedly connected to the transmission part, the other end of the first transmission assembly can be slidably arranged up and down relative to the first fixing seat, and the connecting assembly is fixedly connected to an end of the first transmission assembly away from the transmission part; the second driving mechanism further includes a second transmission assembly, one end of the second transmission assembly is fixedly connected to the output shaft of the second driving member, and the other end of the second transmission assembly is fixedly connected to the connecting assembly; The connecting assembly includes a first connecting member, a bearing and a fixed shaft for connecting a welding head, the first connecting member is fixedly sleeved on the fixed shaft, the outer ring of the bearing is fixedly connected to the first transmission assembly, and the inner ring of the bearing is fixedly connected to the first connecting member; The first locking assembly includes a first locking piece and a second locking piece that cooperates with the first locking piece, the first locking piece is fixedly connected to the second locking piece, and the first locking piece is provided with the transmission part; the first driving mechanism also includes a first detection assembly, the first detection assembly includes a first sensing sheet and a first detection piece, the first sensing sheet is fixedly connected to the first locking piece, the first detection piece is fixedly connected to the first fixing seat, and the first detection piece and the first sensing sheet are arranged correspondingly.

2. The welding head fixing device according to claim 1, characterized in that: The first transmission assembly includes a first transmission member, a second transmission member and a third transmission member, one end of the first transmission member is fixedly connected to the transmission part, the second transmission member is respectively fixedly connected to the other end of the first transmission member away from the transmission part and the third transmission member, and the second transmission member can be slid up and down relative to the first fixed seat, and the bearing is fixedly arranged in the third transmission member.

3. The welding head fixing device according to claim 2, characterized in that: The second transmission member is a hollow structure, and the middle portion of the first transmission member is located inside the second transmission member.

4. The welding head fixing device according to claim 1, characterized in that: The second driving mechanism also includes a second fixing member and a second sliding assembly. The second sliding assembly can be slid up and down relative to the end of the second transmission assembly away from the second driving member. The second fixing member is fixedly connected to the second sliding assembly and the fixed shaft respectively.

5. The welding head fixing device according to claim 1, characterized in that: The second driving mechanism further includes a second fixing seat, and the second driving member is fixedly connected to the second fixing seat.

6. The welding head fixing device according to claim 4, characterized in that: The second driving mechanism also includes a second detection component, which includes a second sensing sheet and a second detection member, the second sensing sheet is fixedly connected to the second transmission component, the second detection member is fixedly connected to the second fixing seat, and the second detection member is correspondingly arranged with the second sensing sheet.

7. The welding head fixing device according to any one of claims 1 to 6, characterized in that: The first driving member and the second driving member are both motors.

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