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CN-224223099-U - Heat shield welding tool

CN224223099UCN 224223099 UCN224223099 UCN 224223099UCN-224223099-U

Abstract

The utility model relates to a heat shield welding tool which comprises a base, wherein an end flange positioning mechanism is arranged on one side of the base and used for positioning a flange at the end of a workpiece, a pipeline positioning mechanism is arranged on one side of the base away from the end flange positioning mechanism and used for positioning a pipeline of the workpiece, a heat shield supporting and clamping mechanism is arranged on the base and between the end flange positioning mechanism and the pipeline positioning mechanism, a plurality of groups of heat shield supporting and clamping mechanisms are arranged along the extending direction of a heat shield, and a heat shield pressing mechanism is arranged above the heat shield supporting and clamping mechanisms and corresponds to the plurality of groups of heat shield supporting and clamping mechanisms, so that the problems of high welding difficulty and easy deformation of an exhaust pipe heat shield in the prior art are solved, and the welding quality and the welding efficiency of the heat shield are improved.

Inventors

  • WANG YANGYANG
  • YANG BO
  • WU NA
  • GAO CHENDAN

Assignees

  • 艾瑞(成都)排放控制技术有限公司

Dates

Publication Date
20260512
Application Date
20250519

Claims (10)

  1. 1. Heat shield welding frock, its characterized in that includes: a base (100), The end flange positioning mechanism (200) is arranged on one side of the base (100) and is used for positioning a flange at the end of the workpiece; The pipeline positioning mechanism (300) is arranged on one side of the base (100) away from the end flange positioning mechanism (200) and is used for positioning a pipeline of a workpiece; The heat shield supporting and clamping mechanism (400) is arranged on the base (100) and is positioned between the end flange positioning mechanism (200) and the pipeline positioning mechanism (300), and a plurality of groups of heat shield supporting and clamping mechanisms (400) are arranged along the extending direction of the heat shield; And the heat shield pressing mechanism (500) is arranged above the heat shield supporting and clamping mechanisms (400) and corresponds to a plurality of groups of heat shield supporting and clamping mechanisms (400).
  2. 2. The heat shield welding fixture according to claim 1, wherein the heat shield support clamping mechanism (400) comprises a support mechanism (410) and a clamping mechanism (420), the clamping mechanism (420) comprises two clamping jaws (421) arranged on the support mechanism (410), and the two clamping jaws (421) are respectively arranged on two sides of the heat shield in the radial direction and can clamp or open simultaneously.
  3. 3. The welding fixture for heat shields according to claim 2, wherein the supporting mechanism (410) comprises a lower half shell supporting seat (411) fixed with the base (100) and a lower half shell supporting block (412) fixed with the upper end of the lower half shell supporting seat (411), a mounting cavity (4111) is arranged on the lower half shell supporting seat (411), The clamping mechanism (420) further comprises a rotary table (422) rotatably arranged in the mounting cavity (4111), two groups of first shafts (423) distributed in an equiangular manner along the circumferential direction of the rotary table (422) are eccentrically arranged on the rotary table (422), first connecting rods (424) are hinged to the first shafts (423), the other ends of the two first connecting rods (424) are hinged to the bottom ends of the two clamping jaws (421) respectively, the middle parts of the clamping jaws (421) are hinged to the lower half shell supporting seat (411), and the upper ends of the clamping jaws (421) can be pressed on a heat shield.
  4. 4. A heat shield welding fixture according to claim 3, wherein a second shaft (425) is eccentrically arranged on the turntable (422), the second shaft (425) is arranged between the two groups of first shafts (423) and is equiangularly arranged with the two groups of first shafts (423), arc-shaped guide holes (4112) are formed in two side plates of the lower half shell supporting seat (411), two ends of the second shaft (425) movably penetrate through the arc-shaped guide holes (4112) and are hinged with one end of a second connecting rod (426), the other end of the second connecting rod (426) is hinged with an eccentric block (427) hinged on the base (100), and a first spanner (428) is arranged on the eccentric block (427).
  5. 5. A heat shield welding fixture according to claim 3, wherein the two sides of the lower half shell supporting block (412) are provided with a yielding groove (4121) for yielding the clamping jaw (421).
  6. 6. The welding fixture for heat shields according to claim 1, wherein the end flange positioning mechanism (200) comprises a first mounting seat (210) fixed with the base (100) and a sliding seat (220) arranged on the first mounting seat (210) in a sliding manner, a first positioning mechanism (230) is arranged between the sliding seat (220) and the first mounting seat (210), a flange pressing mechanism (240) and a flange positioning block (221) are arranged on the sliding seat (220), The flange hold-down mechanism (240) is including locating flange locating piece (221) keep away from moving part (241) of flange locating piece (221) support clamping mechanism (400) one side, it has two sets of first arc arms (242) to articulate on moving part (241), the other end of first arc arms (242) articulates there is second arc arms (243), the middle part of second arc arms (243) with flange locating piece (221) articulates, second arc arms (243) keep away from one end of first arc arms (242) extends to flange locating piece (221) the opposite side is fixed with to flange locating piece (221) central pressure claw (244) that extends, be fixed with first actuating lever (245) on moving part (241), the other end activity of first actuating lever (245) pass be fixed in first guide cylinder (222) and first arm (246) articulated on slide seat (220), the middle part of first arm (246) and second spanner (247) articulates, one end of second spanner (247) with slide seat (220).
  7. 7. The heat shield welding fixture of claim 1, wherein the pipe positioning mechanism (300) comprises a support plate (310) fixed on the base (100), at least one group of corresponding pipe positioning blocks (311) and pipe compressing blocks (312) are arranged on the support plate (310), and the pipe compressing blocks (312) compress or loosen a pipe of a workpiece through a quick clamp (320).
  8. 8. The heat shield welding fixture according to claim 7, wherein the quick clamp (320) comprises a hinge base (321) arranged on the supporting plate (310), a pressing arm (323) is hinged on a corner, away from the supporting plate (310) and the pipeline positioning block (311), of the hinge base (321) through a third shaft (322), the other end of the pressing arm (323) is fixed with the pipeline pressing block (312), a third spanner (325) is hinged on a corner, close to the supporting plate (310) and the pipeline positioning block (311), of the hinge base (321) through a fourth shaft (324), a driving arm (327) is hinged on the pressing arm (323) through a fifth shaft (326), the driving arm (327) is located on one side, away from the supporting plate (310), of the hinge base (321) through a guide surface (3211) matched with the driving arm (327), and the other end of the driving arm (327) is hinged on one side, away from the third spanner (325), through a sixth shaft (328).
  9. 9. The heat shield welding fixture according to claim 1, wherein the heat shield pressing mechanism (500) comprises a fixed seat (510) connected with the base (100), a lifting seat (520) lifting relative to the fixed seat (510) and an upper half-shell pressing block (521) fixed on the lifting seat (520), at least one second driving rod (522) is arranged on the lifting seat (520), the upper end of the second driving rod (522) movably penetrates through a second guide cylinder (511) on the fixed seat (510) to be fixed with a limiting block (523), a telescopic cylinder (530) is further arranged on the limiting block (523), the other end of the telescopic cylinder (530) is connected with the fixed seat (510), and a manual control mechanism (540) is arranged between the fixed seat (510) and the lifting seat (520).
  10. 10. The heat shield welding fixture of claim 1, further comprising a base (600), wherein the base (600) is rotatably connected to the base (100), and wherein a second positioning mechanism (700) is disposed between the base (600) and the base (100).

Description

Heat shield welding tool Technical Field The utility model relates to the technical field of welding tools, in particular to a heat shield welding tool. Background An exhaust system of an automobile mainly includes an exhaust manifold, an exhaust pipe, and a muffler, and a three-way catalyst, which generally controls the emission of engine pollutants, is also installed in the exhaust system. The exhaust pipe generally comprises a front exhaust pipe and a rear exhaust pipe, and the heat shield is required to be sleeved on the periphery of the automobile exhaust pipe due to higher temperature of automobile exhaust. The heat shield is thin in material and easy to deform, the exhaust pipe is bent, the attaching effect of the exhaust pipe and the heat shield is not good through manual assembly, the relative positions of the upper heat shield and the lower heat shield are unstable, the frequency of deformation or penetration during welding is high, and the production efficiency is low. Disclosure of utility model In order to solve the technical problems, the utility model provides a heat shield welding tool which is used for solving the problems of high welding difficulty and easy deformation of an exhaust pipe heat shield in the prior art and improving the welding quality and the welding efficiency of the heat shield. The utility model provides a heat shield welding tool for solving the technical problems, which comprises the following steps: A base, a base seat and a base seat, The end flange positioning mechanism is arranged on one side of the base and used for positioning a flange at the end of the workpiece; The pipeline positioning mechanism is arranged on one side of the base, which is far away from the end flange positioning mechanism, and is used for positioning a pipeline of a workpiece; The heat shield supporting and clamping mechanism is arranged on the base and is positioned between the end flange positioning mechanism and the pipeline positioning mechanism, and a plurality of groups of heat shield supporting and clamping mechanisms are arranged along the extending direction of the heat shield; The heat shield pressing mechanism is arranged above the heat shield supporting and clamping mechanisms and corresponds to a plurality of groups of heat shield supporting and clamping mechanisms. Further, the heat shield supporting and clamping mechanism comprises a supporting mechanism and a clamping mechanism, the clamping mechanism comprises two clamping jaws arranged on the supporting mechanism, and the two clamping jaws are respectively arranged on two sides of the heat shield in the radial direction and can clamp or open simultaneously. Further, the supporting mechanism comprises a lower half shell supporting seat fixed with the base and a lower half shell supporting block fixed with the upper end of the lower half shell supporting seat, the lower half shell supporting seat is provided with an installation cavity, The clamping mechanism further comprises a rotary table rotatably arranged in the mounting cavity, two groups of first shafts which are distributed along the circumference of the rotary table at equal angles are eccentrically arranged on the rotary table, a first connecting rod is hinged to the first shafts, the other ends of the two first connecting rods are respectively hinged to the bottom ends of the two clamping jaws, the middle parts of the clamping jaws are hinged to the lower half-shell supporting seat, and the upper ends of the clamping jaws can be pressed on the heat insulation cover. Further, a second shaft is eccentrically arranged on the rotary table, the second shaft is arranged between the two groups of first shafts and is equiangularly arranged with the two groups of first shafts, arc-shaped guide holes are formed in two side plates of the lower half shell supporting seat, two ends of the second shaft movably penetrate through the arc-shaped guide holes to be hinged with one end of a second connecting rod, the other end of the second connecting rod is hinged with an eccentric block hinged on the base, and a first wrench is arranged on the eccentric block. Further, two sides of the lower half shell supporting block are provided with a yielding groove for yielding the clamping jaw. Further, the end flange positioning mechanism comprises a first mounting seat fixed with the base and a sliding seat arranged on the first mounting seat in a sliding way, a first positioning mechanism is arranged between the sliding seat and the first mounting seat, The sliding seat is provided with a flange pressing mechanism and a flange positioning block, The flange pressing mechanism comprises a movable piece arranged on one side of the flange positioning block, which is far away from the heat shield supporting and clamping mechanism, two groups of first arc arms are hinged on the movable piece, the other end of each first arc arm is hinged with a second arc arm, the middle part of each second arc a