VNT middle shell TIG welding positioning clamp

Abstract

The invention relates to the technical field of turbocharging welding equipment, in particular to a VNT middle shell TIG welding positioning clamp which comprises an operation table and a placing base installed on the operation table, a product is placed in the placing base, a rocker arm is inserted into the product, a shifting fork is installed on the top of the rocker arm, and the lower portion of the rocker arm is supported through a pre-support. A pressing assembly for pressing a product downwards and moving assemblies distributed on the two sides of the pre-support are installed on the operation table. According to the TIG welding positioning clamp for the VNT middle shell, a product is fixed through the containing base and the pressing assembly, then the rocker arm is arranged on the product in a penetrating mode and pre-lifted to be supported, meanwhile, the moving assembly clamps and positions the moving rocker arm, the supporting assembly supports the bottom of the rocker arm, and then a shifting fork installed on the rocker arm is clamped through the positioning assembly; the shifting fork can be prevented from moving in the welding process, so that the positioning stability can be improved, weld joints are prevented from being inconsistent, and meanwhile the shifting fork welding quality can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of turbocharger welding equipment, in particular to a VNT intermediate shell TIG welding positioning fixture. Background Art

[0002] The variable nozzle turbocharger is actually an air compressor that increases the intake volume by compressing air. It uses the inertial impact of the exhaust gas discharged by the engine to drive the turbine in the turbine chamber, and the turbine drives the coaxial impeller, which presses the air sent from the air filter pipe to pressurize it into the cylinder. When the engine speed increases, the exhaust gas discharge speed and the turbine speed also increase synchronously, and the impeller compresses more air into the cylinder. The increase in air pressure and density can burn more fuel. By increasing the amount of fuel and adjusting the engine speed accordingly, the engine output power can be increased.

[0003] During the fork welding process, a welding fixture is required to position and clamp the fork to be welded. The existing method of positioning the fork and moving the guide sleeve positioning shaft to position the fork is poor. After the guide sleeve is veneered, the weld is inconsistent, resulting in inaccurate focus and weld offset, which seriously affects the welding quality of the fork and poses a greater risk to the performance of the parts. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a VNT intermediate shell TIG welding positioning fixture, comprising an operating table and a placement seat installed on the operating table, a product is placed inside the placement seat, a rocker arm is inserted into the product, a shift fork is installed on the top of the rocker arm, and the bottom of the rocker arm is supported by a pre-support, a clamping component for pressing down the product and a moving component distributed on both sides of the pre-support are installed on the operating table, wherein a positioning component for clamping the shift fork and a supporting component located below the rocker arm are installed on the moving component on one side;

[0005] The positioning component comprises a lifting end fixed on one side of the moving component, a positioning tongue piece is fixed on one side of the lifting end, and an auxiliary clamping plate opposite to the protruding end of the positioning tongue piece is torsionally hinged on the positioning tongue piece.

[0006] Furthermore, the placement seat includes a positioning suction seat installed on the operating table, and a side stop attached to the outer side of the positioning suction seat.

[0007] Furthermore, the clamping assembly includes a protrusion fixed on the top of the operating table and an upper cylinder at the bottom, the protrusion is hinged with a hinge rod, the ejection end of the upper cylinder is hinged with a lift rod hinged with the hinge rod, and a pressure block is fixed at one end of the lift rod.

[0008] Furthermore, the moving assembly includes two push cylinders installed on the operating table and distributed relatively to each other, a push block slidably connected to the operating table is fixed at the ejection end of the push cylinder, a pressure sensor is installed on the left push block, a push block is fixed at one end of the pressure sensor, and a positioning block is fixed on the side of the right push block opposite to the push block, and the positioning assembly and the support assembly are both installed on the right push block.

[0009] Furthermore, a limiting plate is fixed on one side of the push block, and a stopper is fixed on the top of the operating table at the end where the push block slides.

[0010] Furthermore, the support assembly includes a push-down cylinder fixed on the right side push block, and the ejection end of the push-down cylinder is hinged with a push rod hinged with the push block.

[0011] Furthermore, the lifting end includes a vertical block fixed on the right side push block and a lifting cylinder, the ejection end of the lifting cylinder is fixed with a frame plate slidably connected to the vertical block, and the positioning tongue is fixed on the frame plate.

[0012] Furthermore, a calibration cylinder is installed on the operating table at the periphery of the product.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] The VNT intermediate shell TIG welding positioning fixture fixes the product through a placement seat and a clamping assembly, and then the rocker arm is passed through the product to provide support. At the same time, the moving assembly clamps and positions the rocker arm, and the supporting assembly supports the bottom of the rocker arm. The positioning assembly clamps the fork installed on the rocker arm to prevent movement during welding, thereby improving the stability of positioning, avoiding inconsistent welds, and improving the quality of fork welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 A three-dimensional diagram of the positioning suction seat connection structure in the present invention;

[0017] Figure 3 A three-dimensional diagram of the connection structure of the product of the present invention;

[0018] Figure 4 A three-dimensional diagram of the clamping assembly of the present invention;

[0019] Figure 5 A three-dimensional diagram of the connection structure of the mobile components in the present invention;

[0020] Figure 6 For the present invention Figure 5 3D rear view of the connection structure of the mobile component on the right side of the middle.

[0021] In the figure: 1. operating table; 2. positioning suction seat; 3. side stop; 4. clamping assembly; 401. protrusion; 402. upper cylinder; 403. hinge rod; 404. tilting rod; 405. pressing block; 5. positioning assembly; 501. vertical block; 502. lifting cylinder; 503. frame plate; 504. positioning tongue; 505. auxiliary splint; 6. moving assembly; 601. push cylinder; 602. push block; 603. stopper; 604. limit plate; 605. positioning block; 606. pressure sensor; 607. top block; 7. pre-support; 8. rocker arm; 9. support assembly; 901. push cylinder; 902. push rod; 10. shift fork; 11. calibration cylinder; 12. product. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-6 A VNT intermediate shell TIG welding positioning fixture in this embodiment includes an operating table 1 and a placement seat installed on the operating table 1, a product 12 is placed inside the placement seat, a rocker arm 8 is inserted into the product 12, a shift fork 10 is installed on the top of the rocker arm 8, the bottom of the rocker arm 8 is supported by a pre-support 7, a half-opening is opened at the top of the pre-support 7, the rocker arm 8 is placed on the half-opening, a clamping component 4 for pressing down the product 12 and a moving component 6 distributed on the left and right sides of the pre-support 7 are installed on the operating table 1, a positioning component 5 for clamping the shift fork 10 and a support component 9 for supporting the bottom of the rocker arm 8 are installed on the right moving component 6.

[0024] In the above structure, the placement seat can be used to position the product so that the product is located at the specified position. The product can be pressed down by the clamping assembly to improve the firmness of the product positioning. The pre-support supports the rocker arm, and then the right-side moving assembly is pushed out to cooperate with the half-mouth to clamp the rocker arm, and at the same time drives the support assembly to move to the bottom of the rocker arm for support. At the same time, the left-side moving assembly is pushed out to cooperate with the right-side moving assembly to clamp the rocker arm in position to improve stability. Then the positioning assembly is used to clamp the fork, so that the welding fork can be prevented from moving, thereby improving the stability of the welding process and the quality of the product.

[0025] like Figure 1-2The placement seat includes a positioning suction seat 2 installed on the operating table 1, a convex rod is formed at the center of the positioning suction seat 2, and the top of the operating table 1 is fixed to a side block 3 attached to the outer side of the positioning suction seat 2. The side block and the convex rod can limit the position of the product, so that the product is accurately placed on the positioning suction seat, and the positioning suction seat absorbs the product, which can improve the firmness of the product placement.

[0026] In addition, a correction cylinder 11 is installed on the top of the operating table 1, which is located outside the product 12. When the product is placed on the positioning suction seat, the product angle can be adjusted by pushing out the correction cylinder.

[0027] like Figure 4 In the direction shown, the clamping assembly 4 includes a convex block 401 fixed on the top of the operating table 1, and an upper cylinder 402 installed at the bottom of the operating table 1. The ejection end of the upper cylinder 402 extends to the top of the operating table 1. A hinge rod 403 is hinged on the convex block 401. A tilting rod 404 hinged with the hinge rod 403 is hinged on the ejection end of the upper cylinder 402. A pressing block 405 is fixed at the left end of the tilting rod 404. Two convex rods are formed at the bottom of the pressing block 405. When the product is positioned, the upper cylinder pushes the tilting rod, and with the cooperation of the hinge rod and the convex block, it can drive the pressing block to move downward, and the pressing operation is completed by the contact between the convex rod and the product.

[0028] like Figure 5 In the direction shown, the moving assembly 6 includes two push cylinders 601 installed on the operating table 1 and distributed relatively. The push block 602 slidably connected to the operating table 1 is fixed at the ejection end of the push cylinder 601. A pressure sensor 606 is installed on the right side of the left push block 602. A push block 607 is fixed at the sensing end of the pressure sensor 606. A positioning block 605 distributed relatively to the push block 607 is fixed on the left side of the right push block 602. The positioning assembly 5 and the supporting assembly 9 are both installed on the right push block 602. When the rocker arm is inserted into the product and supported by the pre-support, the right push cylinder drives the push block to be ejected, so that the positioning block can be driven to contact the rocker arm, and the half-mouth of the pre-support is formed to clamp and fix the rocker arm. At the same time, the left push cylinder drives the push block to contact the rocker arm, so that the rocker arm is close to the positioning block to increase the clamping force, and the clamping force can be detected by the pressure sensor, so that the clamping force can be controlled, the stability of the rocker arm can be improved, and damage to it can be avoided.

[0029] The two push blocks 602 are fixed with a limit plate 604 on the opposite side, the limit plate 604 is L-shaped, and the bottom is in contact with the table surface of the operating table 1, and the top of the operating table 1 is close to the two push blocks 602 and the opposite side of the operating table 1. The stopper 603 is fixed. The two push blocks move oppositely, and the limit plate and the stopper cooperate to limit the push blocks when they move oppositely, so as to avoid excessive movement.

[0030] like Figure 6 In the direction shown, the support assembly 9 includes a push-down cylinder 901 fixed on the right side push block 602, and the ejection end of the push-down cylinder 901 is hinged with a push rod 902 hinged with the positive side of the push block 602. When the push block moves, the push rod is first moved to the bottom of the rocker arm, and then one end of the push rod is pressed down by the operation of the push-down cylinder, so that one end of the push rod is tilted to support the rocker arm.

[0031] like Figure 5-6 The positioning assembly 5 includes a lifting end fixed on the right moving assembly 6, a positioning tongue 504 is fixed on one side of the lifting end, and an auxiliary clamping plate 505 opposite to the protruding end of the positioning tongue 504 is torsionally hinged on the positioning tongue 504. The lifting end is driven to move to a suitable position by the moving assembly, and then the lifting end drives the positioning tongue to move up and down. After the positioning tongue moves to a suitable position, the auxiliary clamping plate is manually opened so that the positioning tongue is located between the protruding ends of the fork, and then the auxiliary clamping plate is reset to cooperate with the positioning tongue to clamp and fix the fork, thereby improving the firmness of the positioning of the fork.

[0032] The lifting end includes a vertical block 501 fixed to the top of the front end of the right push block 602 and a lifting cylinder 502 located next to the vertical block 501. The top end of the lifting cylinder 502 is fixed with a frame plate 503 that is slidably connected to the vertical block 501. The frame plate 503 surrounds the vertical block 501, and the positioning tongue 504 is fixed on the frame plate 503. The cooperation between the frame plate and the vertical block can improve the stability of the frame plate movement, and the lifting cylinder pushes the frame plate, thereby driving the positioning tongue to move up and down.

[0033] The working principle of the above embodiment is:

[0034] By placing the product on the positioning suction seat, the side block can be used to limit the position while placing it, and then the product angle can be adjusted in conjunction with the correction cylinder, and then the product is adsorbed by the positioning suction seat. After the product is positioned in the appropriate position, the upper cylinder pushes the tilting rod, and then the hinge rod and the protrusion are connected to press down to tighten the product, and then the rocker arm is inserted into the product, and the pre-support is supported and the push cylinders are started respectively. First, the right push block is moved to the appropriate position, and the positioning block supports the rocker arm. The rocker arm is clamped with the cooperation of the pre-support, and at the same time the push block contacts the rocker arm, so that the rocker arm and the positioning block are closely attached to improve The rocker arm is clamped firmly and the clamping force can be detected by a pressure sensor to control the clamping force. The push-down cylinder drives the push rod to tilt up to support the bottom of the rocker arm, and then the shift fork is installed on the rocker arm. At this time, the lifting cylinder drives the positioning tongue to move to the appropriate position through the frame plate, and at the same time, the auxiliary splint is opened. When the positioning tongue moves between the protruding ends of the shift fork, the auxiliary splint is released, and the shift fork is clamped by the cooperation of the auxiliary splint and the positioning tongue to avoid movement during welding. Therefore, it can effectively avoid inconsistent welds during the welding process and offset during welding that affects the welding quality.

[0035] The entire workflow is completed, and the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0036] It should be noted that in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprise one..." do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A VNT intermediate shell TIG welding positioning fixture, comprising an operating table (1) and a placement seat installed on the operating table (1), characterized in that: A product (12) is placed inside the placement seat, a rocker arm (8) is inserted into the product (12), a shift fork (10) is installed on the top of the rocker arm (8), and the bottom of the rocker arm (8) is supported by a pre-support (7). A pressing component (4) for pressing down the product (12) and moving components (6) distributed on both sides of the pre-support (7) are installed on the operating table (1), wherein a positioning component (5) for clamping the shift fork (10) and a supporting component (9) located below the rocker arm (8) are installed on one side of the moving component (6); The positioning component (5) comprises a lifting end fixed on one side of the moving component (6), a positioning tongue (504) is fixed on one side of the lifting end, and an auxiliary clamping plate (505) opposite to the protruding end of the positioning tongue (504) is torsionally hinged on the positioning tongue (504).

2. A VNT intermediate shell TIG welding positioning fixture according to claim 1, characterized in that: The placement seat comprises a positioning suction seat (2) installed on the operating table (1), and a side stop (3) abutting against the outer side of the positioning suction seat (2).

3. A VNT intermediate shell TIG welding positioning fixture according to claim 1, characterized in that: The clamping assembly (4) comprises a protrusion (401) fixed on the top of the operating table (1) and an upper cylinder (402) at the bottom, the protrusion (401) is hinged with a hinge rod (403), the ejection end of the upper cylinder (402) is hinged with a tilting rod (404) hinged with the hinge rod (403), and a pressure block (405) is fixed at one end of the tilting rod (404).

4. A VNT intermediate shell TIG welding positioning fixture according to claim 1, characterized in that: The moving assembly (6) comprises two push cylinders (601) mounted on the operating table (1) and arranged relatively to each other; a push block (602) slidably connected to the operating table (1) is fixed to the ejection end of the push cylinder (601); a pressure sensor (606) is mounted on the left push block (602); a push block (607) is fixed to one end of the pressure sensor (606); a positioning block (605) is fixed to the side of the right push block (602) opposite to the push block (607); and the positioning assembly (5) and the support assembly (9) are both mounted on the right push block (602).

5. A VNT intermediate shell TIG welding positioning fixture according to claim 4, characterized in that: A limiting plate (604) is fixed on one side of the push block (602), and a stopper (603) is fixed on the top of the operating table (1) at the sliding end of the push block (602).

6. A VNT intermediate shell TIG welding positioning fixture according to claim 4, characterized in that: The support assembly (9) comprises a push-down cylinder (901) fixed on the right side push block (602), and the ejection end of the push-down cylinder (901) is hinged with a push rod (902) hinged with the push block (602).

7. A VNT intermediate shell TIG welding positioning fixture according to claim 4, characterized in that: The lifting end comprises a vertical block (501) fixed on the right side push block (602) and a lifting cylinder (502); a frame plate (503) slidably connected to the vertical block (501) is fixed on the ejection end of the lifting cylinder (502); and the positioning tongue (504) is fixed on the frame plate (503).

8. The VNT intermediate shell TIG welding positioning fixture according to claim 1, characterized in that: A calibration cylinder (11) is installed on the operating table (1) at the periphery of the product (12).

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