Automatic welding fixture

Abstract

The utility model relates to the technical field of clamps, in particular to an automatic welding clamp which comprises a clamp body, a welding positioning table of a circular structure is arranged on the clamp body, a square through hole is formed in the middle of the welding positioning table, and a first movable supporting plate and a second movable supporting plate are symmetrically installed in the square through hole of the welding positioning table. Clamps are uniformly arranged above the welding positioning table at intervals, clamp push rods are connected to the outer side ends of the clamps, a first linear transmission mechanism is arranged at the lower end of a clamp main body, and a second linear transmission mechanism is connected to the upper end of the first linear transmission mechanism through a screw rod structure; and a horizontal adjusting positioning seat is mounted at the upper end of the second linear transmission mechanism through a screw rod structure. According to the automatic welding fixture, by adjusting the positioning structure, a plate-shaped workpiece and a tubular workpiece can be welded and positioned, meanwhile, the workpieces can be moved and rotated on the plane, and the automatic welding precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to an automatic welding clamp. Background Art

[0002] Automatic welding is a technology that uses automated equipment to perform welding operations. It significantly improves the efficiency, consistency and accuracy of welding and is widely used in manufacturing, especially in the automotive, shipbuilding, aerospace and construction industries. In the automatic welding process, fixtures are used to fix, support or position the workpiece to ensure accuracy and repeatability during the welding process, thereby improving welding quality and production efficiency.

[0003] An existing welding fixture device such as the one disclosed in publication number CN110434532A realizes workpiece positioning by adjusting the position of the fastening plate. However, when used in automatic welding, the fixture has the problems of small movement range, fixed clamping mode, and inability to flexibly adjust the clamping mode. Utility Model Content

[0004] The utility model aims to provide an automatic welding fixture to solve the problems in the current automatic welding on the market raised by the above background technology, that the fixture has a small moving range, a fixed clamping mode, and cannot be flexibly adjusted.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic welding fixture, including a fixture body, a welding positioning platform with a circular structure is provided on the fixture body, and a square through hole is opened in the middle of the welding positioning platform, and a first movable support plate and a second movable support plate are symmetrically installed in the square through hole of the welding positioning platform, fixtures are evenly spaced above the welding positioning platform, and the outer ends of the fixtures are connected to fixture push rods, a first linear transmission mechanism is provided at the lower end of the fixture body, and the upper end of the first linear transmission mechanism is connected to the second linear transmission mechanism through a screw structure, and a horizontal adjustment positioning seat is installed at the upper end of the second linear transmission mechanism through a screw structure, a rotating positioning seat is clamped and fixed at the upper end of the horizontal adjustment positioning seat, and support vertical plates are symmetrically arranged between the rotating positioning seat and the welding positioning platform, the outer ring of the rotating positioning seat is provided with an external tooth groove, and the rotating positioning seat is meshed with a transmission gear through the external tooth groove.

[0006] Preferably, hinge seats are fixed to the lower parts of the welding positioning platform and the first movable support plate and the second movable support plate, and the first movable support plate and the second movable support plate are clamped in the square through holes of the welding positioning platform from below the welding positioning platform.

[0007] Preferably, the upper end planes of the first movable support plate and the second movable support plate are flush with the upper end plane of the welding positioning platform, and the opposite ends below the first movable support plate and the second movable support plate are respectively fixed with a lock seat and a locking rod by screws, and the lock seat and the locking rod are plugged into each other.

[0008] Preferably, the other end of the clamp push rod is fixed to a fixing seat by screws, and the lower end of the fixing seat is fixed to the welding positioning platform by welding.

[0009] Preferably, the cross-section of the rotation positioning seat and the horizontal adjustment positioning seat are both of an "X"-shaped structure, and a through hole corresponding to the position of the square through hole on the welding positioning platform is opened in the middle of the rotation positioning seat and the horizontal adjustment positioning seat, and ball bearings are evenly spaced and mounted on the bottom of the rotation positioning seat, and the ball bearings are arranged in rolling contact with the horizontal adjustment positioning seat.

[0010] Preferably, a driving motor is provided above the transmission gear, and the middle part of the transmission gear is connected to the driving motor coupling through a welded rod-shaped structure, and the outer cover of the driving motor and the transmission gear is provided with a mounting cover, and the lower end of the mounting cover is fixed to the horizontal adjustment positioning seat bolt.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the automatic welding fixture can perform welding positioning processing on plate-shaped workpieces and tubular workpieces respectively by adjusting the positioning structure, and can also make the workpieces move and rotate on the plane, thereby improving the accuracy of automatic welding. The automatic welding fixture has a square hole on the welding positioning table, and a reversible movable support plate is arranged in the square hole, so that the welding positioning table has a positioning mode of plane support and through-limiting, so that the fixture can clamp and position the workpiece for welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the automatic welding fixture of the utility model;

[0013] Figure 2 This is a top view of the automatic welding fixture of the utility model;

[0014] Figure 3 This is a schematic diagram of the bottom structure of the welding positioning table of the automatic welding fixture of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure in which the rotary positioning seat of the automatic welding fixture of the utility model is meshed and connected with the transmission gear through the external tooth groove;

[0016] Figure 5 It is a schematic diagram of the position structure of the horizontal adjustment positioning seat of the automatic welding fixture of the utility model relative to the first linear transmission mechanism and the second linear transmission mechanism.

[0017] In the figure: 1. fixture body; 2. welding positioning table; 3. fixture; 4. first movable support plate; 5. lock seat; 6. locking rod; 7. second movable support plate; 8. hinge seat; 9. fixture push rod; 10. fixed seat; 11. support vertical plate; 12. external tooth groove; 13. rotation positioning seat; 14. mounting cover; 15. driving motor; 16. transmission gear; 17. ball; 18. horizontal adjustment positioning seat; 19. first linear transmission mechanism; 20. second linear transmission mechanism. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-5The utility model provides a technical solution: an automatic welding fixture, including a fixture body 1, a welding positioning platform 2 of a circular structure is provided on the fixture body 1, and a square through hole is opened in the middle of the welding positioning platform 2, and a first movable support plate 4 and a second movable support plate 7 are symmetrically installed in the square through hole of the welding positioning platform 2, the upper end planes of the first movable support plate 4 and the second movable support plate 7 are flush with the upper end plane of the welding positioning platform 2, and the opposite ends of the first movable support plate 4 and the second movable support plate 7 below are respectively fixed with a lock seat 5 and a locking rod 6 by screws, and the lock seat 5 and the locking rod 6 are plugged and matched. This structure enables the first movable support plate 4 and the second movable support plate 7 to form a flat support on the upper end of the welding positioning platform 2 after splicing. The support surface is used to support and position the plate-like workpiece during welding. The lock seat 5 and the locking rod 6 play a role in locking and stabilizing the splicing of the first movable support plate 4 and the second movable support plate 7. The welding positioning platform 2 and the lower parts of the first movable support plate 4 and the second movable support plate 7 are fixed with hinge seats 8, and the first movable support plate 4 and the second movable support plate 7 are clamped in the square through hole of the welding positioning platform 2 from the bottom of the welding positioning platform 2. This structure enables the first movable support plate 4 and the second movable support plate 7 to be placed under the welding positioning platform 2 when the welding positioning platform 2 is used to limit the tubular workpiece through the central square through hole, so that the clamp body 1 can adjust the positioning method. Clamps 3 are evenly spaced above the welding positioning platform 2, and the clamps The outer ends of the fixtures 3 are connected to fixture push rods 9, and the other ends of the fixture push rods 9 are fixed with fixed seats 10 by screws, and the lower ends of the fixed seats 10 are fixed to the welding positioning platform 2 by welding. This structure allows the fixture push rods 9 to be stabilized relative to the welding positioning platform 2 through the fixed seats 10, so that the fixture 3 and the welding positioning platform 2 cooperate to clamp and position the workpiece for welding, thereby ensuring the stability of welding. A first linear transmission mechanism 19 is provided at the lower end of the fixture body 1, and the upper end of the first linear transmission mechanism 19 is connected to a second linear transmission mechanism 20 through a screw structure, and the upper end of the second linear transmission mechanism 20 is installed with a horizontal adjustment positioning seat 18 through a screw structure. The first linear transmission mechanism 19 and the second linear transmission mechanism 20 are both existing linear motion mechanisms. Mechanism, through the stepping motor driving the screw to rotate, realize the linear movement processing of the active structure on the screw, the first linear transmission mechanism 19 and the second linear transmission mechanism 20 are relatively vertically installed to realize the movement processing on the plane, the upper end of the horizontal adjustment positioning seat 18 is clamped and fixed with a rotating positioning seat 13, and a supporting vertical plate 11 is symmetrically arranged between the rotating positioning seat 13 and the welding positioning platform 2, the cross-sections of the rotating positioning seat 13 and the horizontal adjustment positioning seat 18 are both of the "J"-shaped structure, and the middle parts of the rotating positioning seat 13 and the horizontal adjustment positioning seat 18 are provided with through holes corresponding to the positions of the square through holes on the welding positioning platform 2, and the bottom of the rotating positioning seat 13 is evenly spaced and clamped with balls 17, and the balls 17 are arranged in rolling contact with the horizontal adjustment positioning seat 18,This structure allows the rotating positioning seat 13 to rotate under the positioning of the horizontal adjustment positioning seat 18, and the ball 17 plays a role in reducing the rotation resistance. The rotating positioning seat 13 and the horizontal adjustment positioning seat 18 are connected by a "F"-shaped structure, so that the clamping is relatively stable. The rotating positioning seat 13 allows the welding positioning platform 2 to move and adjust the position on the plane through the first linear transmission mechanism 19 and the second linear transmission mechanism 20 under the action of the horizontal adjustment positioning seat 18, and accurately control the welding position. The outer ring of the rotating positioning seat 13 is provided with an outer tooth groove 12, and the rotating positioning seat 1 3 is meshed with a transmission gear 16 through the outer tooth groove 12, a driving motor 15 is arranged above the transmission gear 16, and the middle part of the transmission gear 16 is connected to the driving motor 15 coupling through a welding rod-shaped structure, and a mounting cover 14 is arranged outside the driving motor 15 and the transmission gear 16, and the lower end of the mounting cover 14 is bolted to the horizontal adjustment positioning seat 18. This structure enables the transmission gear 16 to drive the outer tooth groove 12 to move under the drive of the driving motor 15, realize the rotation of the rotating positioning seat 13, thereby realizing the rotation of the welding positioning table 2 and controlling the welding position of the workpiece.

[0020] Working principle: When using the automatic welding fixture, first select a suitable automatic welding positioning method according to the type of welding workpiece. When performing welding positioning of a plate-like workpiece, the first movable support plate 4 and the second movable support plate 7 are clamped in the square through hole in the middle of the welding positioning platform 2, and the first movable support plate 4 and the second movable support plate 7 are locked by plugging the locking rod 6 and the lock seat 5. The plate-like workpiece is placed on the plane formed by the first movable support plate 4 and the second movable support plate 7. When performing welding positioning of a tubular structure, the locking rod 6 is pulled out of the lock seat 5, and the first movable support plate 4 and the second movable support plate 7 are rotated relative to the welding positioning platform 2 through the hinge seat 8, so that the tubular workpiece can pass through the welding positioning platform 2, and then the clamp 3 is moved by the clamp push rod 9, so that the clamp 3 clamps the plate-like workpiece or the tubular workpiece, thereby achieving Welding positioning, the fixed seat 10 makes the fixture push rod 9 stable relative to the welding positioning platform 2. During the automatic welding process, the second linear transmission mechanism 20 moves linearly on the plane under the drive of the first linear transmission mechanism 19, and the horizontal adjustment positioning seat 18 also moves linearly on the plane under the drive of the first linear transmission mechanism 19 to adjust the plane position of the welding positioning platform 2, and then the driving motor 15 drives the transmission gear 16 to rotate, so that the transmission gear 16 drives the rotating positioning seat 13 to rotate through the engagement with the external tooth groove 12. The rotating positioning seat 13 is fixed by the supporting vertical plate 11 to rotate the welding positioning platform 2 to adjust the welding position of the workpiece. The ball 17 makes the rotation of the rotating positioning seat 13 smoother. The mounting cover 14 is used for the installation and positioning processing of the driving motor 15 and the transmission gear 16 to realize the flexible use of the fixture body 1, thereby completing a series of tasks.

[0021] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic welding fixture, comprising a fixture body (1), characterized in that: The fixture body (1) is provided with a welding positioning platform (2) of a circular structure, and a square through hole is opened in the middle of the welding positioning platform (2), and a first movable support plate (4) and a second movable support plate (7) are symmetrically installed in the square through hole of the welding positioning platform (2), and clamps (3) are evenly spaced above the welding positioning platform (2), and the outer ends of the clamps (3) are connected to clamp push rods (9), and the lower end of the fixture body (1) is provided with a first linear transmission mechanism (19), and the upper end of the first linear transmission mechanism (19) is connected to the upper end of the first linear transmission mechanism (19). The screw structure is connected to a second linear transmission mechanism (20), and a horizontal adjustment positioning seat (18) is installed on the upper end of the second linear transmission mechanism (20) through the screw structure, a rotation positioning seat (13) is clamped and fixed on the upper end of the horizontal adjustment positioning seat (18), and a support vertical plate (11) is symmetrically arranged between the rotation positioning seat (13) and the welding positioning platform (2), the outer ring of the rotation positioning seat (13) is provided with an external tooth groove (12), and the rotation positioning seat (13) is meshedly connected with a transmission gear (16) through the external tooth groove (12).

2. The automatic welding fixture according to claim 1, characterized in that: A hinge seat (8) is fixed to the lower parts of the welding positioning platform (2) and the first movable support plate (4) and the second movable support plate (7), and the first movable support plate (4) and the second movable support plate (7) are clamped in the square through hole of the welding positioning platform (2) from the bottom of the welding positioning platform (2).

3. The automatic welding fixture according to claim 1, characterized in that: The upper end planes of the first movable support plate (4) and the second movable support plate (7) are flush with the upper end plane of the welding positioning platform (2), and a lock seat (5) and a locking rod (6) are respectively screwed to the opposite ends below the first movable support plate (4) and the second movable support plate (7), and the lock seat (5) and the locking rod (6) are plug-fitted.

4. The automatic welding fixture according to claim 1, characterized in that: The other end of the clamp push rod (9) is fixed to a fixing seat (10) by means of screws, and the lower end of the fixing seat (10) is fixed to the welding positioning platform (2) by means of welding.

5. The automatic welding fixture according to claim 1, characterized in that: The cross-sections of the rotational positioning seat (13) and the horizontal adjustment positioning seat (18) are both of a "X"-shaped structure, and through holes corresponding to the positions of the square through holes on the welding positioning platform (2) are opened in the middle of the rotational positioning seat (13) and the horizontal adjustment positioning seat (18), and balls (17) are evenly spaced and clamped on the bottom of the rotational positioning seat (13), and the balls (17) are arranged in rolling contact with the horizontal adjustment positioning seat (18).

6. The automatic welding fixture according to claim 1, characterized in that: A driving motor (15) is arranged above the transmission gear (16), and the middle part of the transmission gear (16) is connected to the coupling of the driving motor (15) through a welded rod-shaped structure. An installation cover (14) is arranged outside the driving motor (15) and the transmission gear (16), and the lower end of the installation cover (14) is fixed to the horizontal adjustment positioning seat (18) by bolts.

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