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CN-122007771-A - Limiting device for sheet metal part welding processing

CN122007771ACN 122007771 ACN122007771 ACN 122007771ACN-122007771-A

Abstract

The invention discloses a limiting device for welding and processing sheet metal parts, in particular to the technical field of auxiliary equipment for welding sheet metal parts, which is characterized in that a limiting unit is arranged, a telescopic clamping piece is suitable for limiting reinforcing sheet metal parts with different sizes, the frequency of replacing a tool is reduced, the reinforcing sheet metal parts reach the height positions corresponding to the turning positions of a rotary supporting piece, an outer plate and an inner plate are respectively converted from initial supporting postures into assembling postures which are parallel to the reinforcing sheet metal parts and have the same height, the pressfitting spare moves towards planking and inner panel, makes planking, strengthen sheet metal component and inner panel three realize accurate laminating and butt joint, forms horizontal, vertical and the multiple spacing in the pressfitting direction to the position multipoint spot welding that corresponds at the fluting makes planking, strengthen sheet metal component and inner panel accomplish the prewelding under the laminating state and fixes, improves the stability of three-layer sheet metal component assembly, effectively reduces dislocation, warpage and the welding deviation problem that appears in the spot welding process, thereby guarantees welding quality.

Inventors

  • Nan Linhai
  • Fan Quansong
  • MAI HUAXUAN

Assignees

  • 珠海市默佳电器有限公司

Dates

Publication Date
20260512
Application Date
20260414

Claims (8)

  1. 1. The limiting device for welding and processing the sheet metal parts comprises a lower base plate (2) and an upper base frame (1) and is characterized in that a conveying unit is arranged on the upper surface of the lower base plate (2), a stroke cylinder (4) is arranged on the conveying unit, and a pushing end of the stroke cylinder (4) is connected with limiting units for limiting the reinforced sheet metal parts with different sizes; The limiting unit comprises a frame (5) connected with the pushing end of the travel cylinder (4), and telescopic clamping pieces which move in opposite directions simultaneously are slidably arranged on two sides of the interior of the frame (5); The telescopic clamping piece comprises a lower limiting plate (14) which is slidably arranged at the bottom of the inner cavity of the frame (5), and an upper limiting plate (15) which is movably arranged at the top of the inner cavity of the frame (5) is slidably arranged at the top of the lower limiting plate (14); Limiting pieces for fixing the edges of the reinforced sheet metal parts are embedded and installed on the inner wall surfaces of the lower limiting plate (14) and the upper limiting plate (15), and a plurality of slots (16) for spot welding are formed in the surfaces of the lower limiting plate (14) and the upper limiting plate (15) in a penetrating mode; a limiting plate (20) which is used for limiting and sliding along the vertical direction is arranged at the top of the inner cavity of the frame (5), and limiting rebound pieces used for resetting the telescopic clamping pieces are arranged on the surface of the limiting plate (20) and the bottom of the inner cavity of the frame (5); two synchronous approaching or separating rotary supporting pieces are arranged in the upper base frame (1) in a sliding manner; a through hole (6) for the frame (5) to pass through is formed between the two rotary supporting pieces, and the two rotary supporting pieces are respectively adsorbed and fixed on the outer plate and the inner plate; The two ends of the frame (5) are provided with pressing units for butting the outer plate, the inner plate and the reinforcing sheet metal parts, the pressing units comprise rotating plates (12) rotatably arranged at two edges of the frame (5), and pressing parts are arranged at the ends of the rotating plates (12).
  2. 2. The limiting device for welding processing of sheet metal parts according to claim 1, wherein the limiting rebound piece comprises a side plate (21) fixed at the end part of a limiting plate (20) or at the bottom of an inner cavity of a frame (5), the end parts of an upper limiting plate (15) and a lower limiting plate (14) both slide through the corresponding side plate (21), one end of the upper limiting plate (15) and one end of the lower limiting plate (14) extending into the side plate (21) are sleeved with springs (23), and the tail ends of the upper limiting plate (15) and the lower limiting plate (14) are respectively provided with a contact part (24); The top and the bottom of the inner cavity of the frame (5) are respectively provided with an upper cam roller (19) and a lower cam (25) driven by corresponding servo motors, the upper cam roller (19) is abutted with the upper contact part (24), and the lower cam (25) is abutted with the lower contact part (24).
  3. 3. The limiting device for sheet metal part welding processing according to claim 1, wherein the limiting piece comprises a reset cavity arranged on the inner wall of the lower limiting plate (14) or the upper limiting plate (15), an electromagnet (18) is arranged in the reset cavity, the armature end of the electromagnet (18) is adsorbed and connected with a triangular block (13), the triangular block (13) slides in the corresponding reset cavity in a limiting manner, and one end of the triangular block (13) facing the inlet of the frame (5) is an pushing inclined plane.
  4. 4. The limiting device for sheet metal part welding processing according to claim 1, wherein the pressing piece comprises a pressing cylinder (26) arranged at the tail end of a T-shaped rotating plate (12), a pressing plate (27) is connected to the pushing end of the pressing cylinder (26), and an adsorption plate (28) for adsorbing an outer plate or an inner plate is embedded into the inner side surface of the pressing plate (27).
  5. 5. The limiting device for sheet metal part welding processing according to claim 1, wherein an electric push rod (17) is installed on one side of the top of the lower limiting plate (14), the pushing end of the electric push rod (17) is connected with a fixed block, and the fixed block is fixed with one side of the bottom of the upper limiting plate (15); The bottom of the upper limiting plate (15) is fixed with a limiting part (22) which limits sliding in a groove body on the top surface of the lower limiting plate (14).
  6. 6. The limiting device for welding processing of sheet metal parts according to claim 1, wherein the rotating support piece comprises a sliding plate (10) which is limited to slide in the upper base frame (1), one end of the sliding plate (10) facing the through hole (6) is rotationally connected with a turning plate (7) which is adsorbed on the surface of the outer plate or the inner plate, the upper surface of the turning plate (7) is provided with a negative pressure opening, and the negative pressure opening and the adsorption plate (28) are connected with a vacuum pump through a hose; The inside of the upper base frame (1) is provided with a transmission screw (11) driven by a positive motor and a negative motor, and two opposite threaded parts on the transmission screw (11) are in threaded sleeve joint with a sliding plate (10) on the corresponding side.
  7. 7. The limiting device for sheet metal part welding processing according to claim 6, wherein a notch for the pressing plate (27) to pass through is formed in the middle edge of the upper surface of the turning plate (7), at least one positioning groove (8) is formed in two sides of the notch, and a positioning corner block (9) limiting the end part of the outer plate or the inner plate is mounted in the positioning groove (8).
  8. 8. The limiting device for sheet metal part welding processing according to claim 1, wherein the conveying unit comprises two linear slide rails (3), the end parts of the two linear slide rails (3) are arranged in a collinear manner, and the sliding block of each linear slide rail (3) is fixed with a corresponding stroke cylinder (4).

Description

Limiting device for sheet metal part welding processing Technical Field The invention relates to the technical field of sheet metal part welding auxiliary equipment, in particular to a limiting device for sheet metal part welding processing. Background The sheet metal part is widely applied to machine case cabinets, automobile parts, household appliance shells, rail transit fittings and various mechanical structural parts. In the sheet metal part production process, a plurality of sheet material bending parts, stamping parts or profile parts are often required to be welded after being positioned so as to form a welding assembly meeting the requirements of dimensional accuracy and structural strength, and in the existing sheet metal part welding process, manual scribing positioning, common profiling, briquetting clamping or simple tool clamping limiting are generally adopted. In sheet metal part welding processing, part of products need to be fixed by spot welding after the assembly of an outer plate, a middle reinforcing sheet metal part and an inner plate. Because not only there is the interlaminar laminating relation between three sheet metal parts, still there is mutual position correspondence, therefore the adaptability to stop device, guidance quality and stability require higher, however, limit structure among the prior art designs to single specification plate or two-plate butt joint operating mode more, and mostly fixed or the less structure of accommodation, when the length of sheet metal part, width or marginal dimension change, be difficult to the quick adjustment spacing position, often need change frock or recalibration, lead to switching inefficiency between the different sizes sheet metal part, be difficult to satisfy the welding process demand of many specifications product. Disclosure of Invention The invention aims to provide a limiting device for sheet metal part welding processing, which aims to solve the problems in the background art. The invention mainly solves the technical problems that: Most of the prior art is fixed or has a smaller adjusting range, the limiting position is difficult to adjust rapidly, tools are often required to be replaced or recalibrated, the switching efficiency between sheet metal parts of different sizes is low, and the welding processing requirements of products of multiple specifications are difficult to meet. The invention can be realized by the following technical scheme: The limiting device for welding and processing the sheet metal parts comprises a lower substrate and an upper base frame, wherein a conveying unit is arranged on the upper surface of the lower substrate, a stroke cylinder is arranged on the conveying unit, and a pushing end of the stroke cylinder is connected with limiting units for limiting the reinforced sheet metal parts with different sizes; the limiting unit comprises a frame connected with the pushing end of the stroke cylinder, and telescopic clamping pieces which move in opposite directions simultaneously are slidably arranged on two sides of the interior of the frame; the telescopic clamping piece comprises a lower limiting plate which is slidably arranged at the bottom of the inner cavity of the frame, and an upper limiting plate which is movably arranged at the top of the inner cavity of the frame is slidably arranged at the top of the lower limiting plate; Limiting pieces for fixing the edges of the reinforced sheet metal parts are embedded and installed on the inner wall surfaces of the lower limiting plate and the upper limiting plate, and a plurality of slots for spot welding are formed in the surfaces of the lower limiting plate and the upper limiting plate in a penetrating manner; a limiting plate which is used for limiting and sliding along the vertical direction is arranged at the top of the inner cavity of the frame, and limiting rebound pieces used for resetting the telescopic clamping pieces are arranged on the surface of the limiting plate and the bottom of the inner cavity of the frame; two synchronous close or distant rotating supporting pieces are slidably arranged in the upper base frame; A through hole for the frame to pass through is formed between the two rotary supporting pieces, and the two rotary supporting pieces are respectively adsorbed and fixed on the outer plate and the inner plate; The two ends of the frame are provided with pressing units for butting the outer plate, the inner plate and the reinforcing sheet metal parts, each pressing unit comprises a rotating plate rotatably installed at two edges of the frame, and pressing parts are arranged at the end parts of the rotating plates. The invention further technically improves that the limiting rebound piece comprises a side plate fixed at the end part of the limiting plate or at the bottom of the inner cavity of the frame, the end parts of the upper limiting plate and the lower limiting plate both slide through the corresponding side plate, sprin