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CN-122007756-A - Positioning tool for welding semiconductor shunt disc

CN122007756ACN 122007756 ACN122007756 ACN 122007756ACN-122007756-A

Abstract

The invention relates to the technical field of welding tools, in particular to a positioning tool for welding a semiconductor flow distribution disc, which comprises a diffusion welding box, a base arranged at the bottom end of the inside of the diffusion welding box, a lifting placement plate arranged above the base and used for stacking the flow distribution disc, four groups of clamping blocks symmetrically distributed around the base, a centering power piece used for driving the clamping blocks to synchronously move towards the center and a pressing piece arranged above the clamping blocks, wherein the pressing piece comprises a fixed disc used for pressing the flow distribution disc and a pressing rod arranged in a sliding manner, the bottom of the pressing rod is provided with an inclined surface structure matched with a guiding inclined surface at the top of the clamping block, and when the pressing piece moves downwards, the downward pressing force is converted into a pushing force in the horizontal direction, so that the clamping blocks are driven to further cling to the periphery of the flow distribution disc, and fine centering and positioning of the flow distribution disc are realized. The invention can effectively compensate the positioning error generated by the transmission mechanism and improve the positioning concentricity and the positioning stability of the flow distribution disc, thereby improving the stability and the product quality of the diffusion welding process.

Inventors

  • WANG YAFEI
  • YANG ZHENYU
  • GONG HAIFEI
  • SUN YONG

Assignees

  • 深蓝(浙江)精密科技有限公司

Dates

Publication Date
20260512
Application Date
20260313

Claims (10)

  1. 1. A location frock for semiconductor flow distribution plate welding, its characterized in that includes: a base (21) is arranged at the bottom end of the diffusion welding box (1); A lifting placement plate (22) arranged above the base (21) and used for stacking the diverter trays (4); the four groups of clamping blocks (23) are symmetrically distributed around the base (21), the clamping blocks (23) comprise clamping bodies (234), and guide inclined planes (2341) are arranged at the tops of the clamping bodies (234); a centering power piece (24) for driving the four groups of clamping blocks (23) to synchronously move towards the center so as to perform preliminary centering on the distribution disc (4), and The pressing piece (3) is arranged above the clamping block (23) and driven to lift by a hydraulic rod (5) arranged in the diffusion welding box (1), and the pressing piece (3) comprises a fixed disc (31) for pressing down the flow distribution disc (4) and a sliding extrusion rod (6); When the pressing piece (3) moves downwards, the pressing rod (6) is firstly abutted against the guide inclined surface (2341), the downward pressing force is converted into horizontal pushing force, the clamping body (234) is driven to be further clung to the periphery of the flow distribution disc (4) to realize fine centering, and in the process that the pressing piece (3) continues to move downwards, the pressing rod (6) can displace relative to the clamping block (23) and automatically separate from the guide inclined surface (2341), so that the clamping block (23) automatically releases the clamping of the flow distribution disc (4); The fixed disk (31) then contacts the top of the diverter disk (4) and applies an axial compressive force to the diverter disk (4).
  2. 2. The positioning tool for welding the semiconductor flow distribution disc according to claim 1, wherein the centering power piece (24) comprises a longitudinal centering piece (241) and a transverse centering piece (242) which are respectively arranged on two longitudinal sides and two transverse sides of the base (21); The vertical centering piece (241) comprises two groups of ear plates (2411), a bidirectional screw rod (2412) is rotatably arranged between the two groups of ear plates (2411), opposite external threads at two ends of the bidirectional screw rod (2412) are respectively in threaded connection with the two groups of vertical clamping blocks (23), a driving motor (43) and a driving transmission wheel (2414) are arranged on the base (21), a driven transmission wheel (2413) is arranged at the end part of the bidirectional screw rod (2412), the driving transmission wheel (2414) drives the driven transmission wheel (2413) to synchronously rotate through a chain belt (2415), and the internal structure of the horizontal centering piece (242) is identical with that of the vertical centering piece (241).
  3. 3. The positioning tool for welding of the semiconductor flow distribution plate according to claim 2, wherein sliding grooves (221) are formed in four sides of the lifting placement plate (22) respectively, the clamping block (23) further comprises a moving rod (231) and a sliding rod (233) which is connected to the moving rod (231) in a sliding mode, a threaded hole (232) which is in threaded connection with the bidirectional screw rod (2412) is formed in the moving rod (231), two sides of the moving rod are in fit limit with the inner wall of the sliding groove (221), an end cap (235) is arranged at one end of the sliding rod (233), the other end of the sliding rod is connected with the clamping body (234), and a first spring (236) sleeved on the sliding rod (233) is connected between the end cap (235) and the moving rod (231).
  4. 4. The positioning tool for welding of the semiconductor split disc according to claim 3, wherein the pressing piece (3) further comprises a rotating ring (32) rotatably arranged on the periphery of the fixed disc (31), a device groove (321) corresponding to the clamping block (23) is formed in the bottom of the rotating ring (32), the extrusion rod (6) is slidably arranged in the device groove (321), a second spring (61) abutting against the extrusion rod (6) is arranged in the device groove (321), and the elastic force of the second spring (61) is larger than that of the first spring (236).
  5. 5. The positioning tool for welding the semiconductor flow distribution disc according to claim 4, wherein the extruding rod (6) is connected with a rack (64), a pinion (65) capable of being meshed with the rack (64) is rotatably arranged at the bottom of the rotating ring (32), a large gear (66) coaxially linked with the pinion (65) is rotatably arranged at the top of the rotating ring (32), and a fixed toothed ring (67) is fixed at the top of the fixed disc (31); When the rack (64) is meshed with the pinion (65), the pinion (65) rotates to drive the large gear (66) to move along the fixed toothed ring (67), so that the rotating ring (32) is driven to rotate and drive the extrusion rod (6) to move, and the extrusion rod (6) is separated from the clamping body (234).
  6. 6. The positioning tool for welding of semiconductor diverter trays according to claim 5, wherein a smooth straight rod is arranged at one end of the rack (64) close to the pinion (65), the smooth straight rod and the pinion (65) do not form a transmission relation in an initial stage of moving downwards the extrusion rod (6) and moving towards the side far away from the diverter tray (4), the clamping body (234) is further driven to be closely attached to the diverter tray (4) by the counter thrust generated by compression of the second spring (61), and the force of the clamping body (234) on the diverter tray (4) is relieved after the extrusion rod (6) continues to move until the rack (64) is meshed with the pinion (65).
  7. 7. The positioning tool for welding of the semiconductor flow distribution disc according to claim 4, wherein the distance between the extrusion rod (6) and the center of the fixed disc (31) is adjustable, an adjustment rod (62) is arranged in the equipment groove (321) in a penetrating mode, an intermediate block (621) and an end block (622) with the outer periphery attached to the inner wall of the equipment groove (321) are rotatably sleeved on the adjustment rod (62), the outer surface of the adjustment rod (62) between the intermediate block (621) and the end block (622) is a smooth section, and a sliding block (623) fixed with the extrusion rod (6) is sleeved on the smooth section in a sliding mode.
  8. 8. The positioning tool for welding of the semiconductor flow distribution disc according to claim 7, wherein a rotary cap (624) is fixed at one end of the adjusting rod (62) located outside, external threads screwed with the groove wall of the equipment groove (321) are arranged on the surface of the adjusting rod (62), a synchronizing piece (63) is further arranged at the bottom of the rotating ring (32), the synchronizing piece (63) comprises a bevel gear (632), and a bevel gear (631) meshed with the bevel gear (632) is fixed at the periphery of the rotary cap (624) so as to realize synchronous adjustment.
  9. 9. The positioning tool for welding the semiconductor splitter plate, which is disclosed in claim 6, is characterized in that a reset piece (68) is further arranged at the top of the rotating ring (32), the reset piece (68) comprises a ring groove (681) formed at the top of the rotating ring (32), a rotating ring plate (682) is rotatably arranged at the top of the inner wall of the diffusion welding box (1), an elastic telescopic rod (683) is fixed at the bottom of the rotating ring plate (682), an adapting plate (6831) which is adapted to the ring groove (681) is fixed at the bottom of the elastic telescopic rod (683), driving teeth (684) are sleeved on the periphery of the rotating ring plate (682), an outer tooth ring (685) meshed with the driving teeth (684) is arranged at the top of the diffusion welding box (1), and a servo motor (686) for driving the outer tooth ring (685) to rotate; When the diffusion welding process is finished and the hydraulic rod (5) drives the rotating ring (32) to move upwards for resetting, the servo motor (686) drives the outer tooth ring (685) to rotate and drives the rotating ring plate (682) to rotate for at least two weeks, so that the adapting plate (6831) slides into the annular groove (681) and drives the rotating ring (32) to rotate through the end part of the annular groove (681), and the position resetting of the extruding rod (6) is realized.
  10. 10. The positioning tool for welding of semiconductor flow distribution plates according to any one of claims 1 to 9, wherein electric drive telescopic rods (222) are respectively arranged at four corners inside the base (21), the output ends of the electric drive telescopic rods (222) penetrate through the top of the base (21) upwards and are fixed with the bottom of the lifting placement plate (22), and a cambered surface (2342) is arranged on one side surface, far away from the flow distribution plate (4), of the clamping body (234).

Description

Positioning tool for welding semiconductor shunt disc Technical Field The invention relates to the technical field of welding tools, in particular to a positioning tool for welding a semiconductor flow distribution disc. Background In the process of manufacturing metal cutting and welding equipment such as automatic semiautomatic electric arc, plasma arc welding machines and the like and constructing intelligent casting islands, a high-power semiconductor flow distribution disc is a core component for supporting the power conversion and current distribution of the whole machine. In order to ensure the electrical connectivity and thermal stability of the diverter trays under extreme welding conditions, multiple layers of dissimilar metals are typically stacked and diffusion welded. The existing automatic tool has the following defects that are difficult to avoid: Most of existing positioning tools adopt a mode of driving a clamping piece by a driving motor and a bidirectional screw rod or an air cylinder, and clamp and position the flow distribution disc from different directions by a plurality of clamping pieces. However, in an industrial environment, mechanical wear is easily generated on transmission components such as a screw pair, a chain transmission mechanism, a guide rail sliding block and the like, so that back clearance or accumulated tolerance is formed, deviation is generated in the positioning process of the clamping piece, concentricity of the flow distribution disc is further affected, and stability of diffusion welding is reduced. In addition, since diffusion welding is typically performed in a relatively high temperature environment, the diverter trays undergo some degree of radial thermal expansion during heating. If the radially rigid grip is maintained continuously during the welding process, additional restraining forces are easily created on the diverter trays, thereby creating thermal stresses at the weld interface that affect weld quality. Disclosure of Invention In view of the above, the invention aims to provide a positioning tool for welding a semiconductor flow distribution disc, which solves the problem of accumulated errors generated by long-term operation of mechanical structures such as screw transmission and the like. Based on the above object, the present invention provides a positioning tool for welding a semiconductor shunt disc, comprising: a base is arranged at the bottom end of the diffusion welding box; The lifting placing plate is arranged above the base and is used for stacking the diverter trays; the four groups of clamping blocks are symmetrically distributed around the base, each clamping block comprises a clamping body, and a guide inclined plane is arranged at the top of each clamping body; A centering power part for driving the four groups of clamping blocks to synchronously move towards the center so as to perform preliminary centering on the distribution plate, and The pressing piece is arranged above the clamping block and driven to lift by a hydraulic rod arranged in the diffusion welding box, and comprises a fixed disc for pressing down the flow distribution disc and a pressing rod arranged in a sliding manner; when the pressing piece moves downwards, the pressing rod is firstly abutted against the guide inclined plane, the downward pressing force is converted into horizontal pushing force, the clamping body is driven to further cling to the periphery of the flow distribution disc to realize fine centering, and in the process that the pressing piece continues to move downwards, the pressing rod can displace relative to the clamping block and automatically separate from the guide inclined plane, so that the clamping block automatically releases the clamping of the flow distribution disc; The fixed disk then contacts the top of the diverter tray and applies an axial compressive force to the diverter tray. Further, the centering power piece comprises a longitudinal centering piece and a transverse centering piece which are respectively arranged on two longitudinal sides and two transverse sides of the base; The vertical centering piece comprises two groups of lug plates, a bidirectional screw rod is rotatably arranged between the two groups of lug plates, opposite external threads at two ends of the bidirectional screw rod are respectively in threaded connection with the two groups of vertical clamping blocks, a driving motor and a driving transmission wheel are arranged on the base, a driven transmission wheel is arranged at the end part of the bidirectional screw rod, the driving transmission wheel drives the driven transmission wheel to synchronously rotate through a chain belt, and the internal structure of the horizontal centering piece is identical with that of the vertical centering piece. Furthermore, the four sides of the lifting placing plate are respectively provided with a sliding groove, the clamping block further comprises a moving rod and a sli