An automatic welding device for prefabricating building steel bars

Abstract

The present invention discloses an automatic welding device for prefabricated building steel bars, which belongs to the technical field of steel bar welding. The device comprises: a base frame, a driving plate, a crossbeam, a support beam and a welding unit, wherein the base frame is composed of two bracket bodies arranged in parallel, the driving plates are symmetrically and slidably mounted on the base frame, a crossbeam is horizontally fixed between the driving plates, a mounting plate is symmetrically fixed on the crossbeam, a support beam is horizontally fixed between the mounting plates and located above the crossbeam, a guide groove 1 is provided on the support beam, a sliding plate is slidably connected in the guide groove 1; a mounting beam frame is transversely fixed on the side of the sliding plate away from the support beam, a plurality of welding units are arranged on the mounting beam frame, and each of the welding units is horizontally slidably adjusted and arranged on the mounting beam frame; the present invention performs two welding processes on the angle formed by the steel bar construction combination, further strengthens the construction joint, and ensures the welding strength.

Description

Technical Field

[0001] The invention belongs to the technical field of steel bar welding, in particular to an automatic welding device for prefabricated building steel bars. Background Art

[0002] Prefabrication of building steel bars mainly utilizes forming technology to prefabricate steel bars into various complex geometric shapes according to design requirements, such as reinforcement bars for steel cages, beams, and columns. Prefabricated steel bar components are manufactured in advance in the factory and can be directly installed after arriving at the construction site, which greatly reduces the time for tying steel bars on site and speeds up the construction progress. Currently, welding is usually required for prefabrication of steel bars. Traditional steel bar welding technology mainly uses manual welding, which has the disadvantages of low efficiency, unstable quality, and intensive labor. Most automated welding equipment is controlled by robotic arms. Although it can greatly reduce labor costs, the path accuracy and positioning of welding points during welding are difficult to adapt and control, resulting in welding defects such as pores and cracks.

[0003] Therefore, it is necessary to provide an automatic welding device for prefabricated building steel bars to solve the problems raised in the above background technology. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic welding device for prefabricated building steel bars, comprising: a base frame, a driving plate, a crossbeam, a support beam and a welding unit, wherein the base frame is composed of two bracket bodies arranged in parallel, a driving plate is symmetrically and slidably mounted on the base frame, a crossbeam is horizontally fixed between the driving plates, a mounting plate is symmetrically fixed on the crossbeam, a support beam is horizontally fixed between the mounting plates and located above the crossbeam, a guide groove 1 is provided on the support beam, a sliding plate is slidably connected in the guide groove 1; a mounting beam frame is transversely fixed on the side of the sliding plate away from the support beam, a plurality of welding units are arranged on the mounting beam frame, and each of the welding units is arranged on the mounting beam frame in a horizontally sliding manner;

[0005] The welding unit comprises a positioning plate, which is slidably mounted on the mounting beam, an outer body column is vertically arranged on one side of the positioning plate, an adjustment arm is arranged at the lower part of the outer body column, and two laser welders are symmetrically distributed on the adjustment arm;

[0006] The base frame is provided with a driving unit, and the driving unit controls the driving plate to slide horizontally along the base frame. When the steel bars are built at right angles, the welding unit synchronously performs the initial welding operation on the steel bar building angle through two laser welders during the positive displacement of the driving plate; and the welding unit synchronously performs the secondary welding operation on the other two steel bar building angles through two laser welders during the reverse displacement of the driving plate.

[0007] Furthermore, preferably, when the steel bars are constructed at non-right angles, the welding unit performs primary welding operations on the acute angles formed by the steel bars through two laser welders synchronously during the forward displacement of the driving plate, and performs secondary welding operations on the obtuse angles formed by the steel bars through two laser welders synchronously during the reverse displacement of the driving plate.

[0008] Further, as a preference, a threaded rod is vertically rotatably connected to the positioning plate, a fixed plate is vertically slidably arranged on the positioning plate, the fixed plate is slidably connected to the threaded rod through threaded engagement, an external motor is fixed to the positioning plate, an output end of the external motor is fixed to the threaded rod, and the outer body column is mounted on the fixed plate.

[0009] Further, as a preference, the adjustment arm frame includes an upper end shaft, side plates are symmetrically fixed below the upper end shaft, inner rods and outer rods are hinged below the side plates, the other ends of the inner rods and outer rods are rotatably connected to the angle plates, the laser welder is fixed on one side of each angle plate, the inner rods are rotatably connected to the side rods, connecting linings are hinged between the side rods, a telescopic rod is vertically fixed in the upper end shaft, and one end of the telescopic rod is connected to the connecting lining;

[0010] The laser welder takes the horizontal direction as a reference, and its deflection angle ranges from 25° to 70°.

[0011] Further, as a preference, a laser channel is provided in the middle of the laser welder, and a welding sleeve is sleeved on the end thereof, a fixed cone sleeve is coaxially arranged in the welding sleeve, an annular guide cavity is arranged in the fixed cone sleeve, and a plurality of circumferentially distributed inner channels are opened on the side wall of the fixed cone sleeve, and each of the inner channels is connected to the annular guide cavity;

[0012] A powder delivery pipe is fixedly connected to the welding sleeve, and one end of the powder delivery pipe is connected to the annular guide cavity;

[0013] A gap is provided between the welding sleeve and the fixed cone sleeve, an airflow pipe is connected to the welding sleeve, and the airflow pipe is communicated with the gap.

[0014] Further, preferably, the powder delivery pipe is used to add welding material during steel bar welding.

[0015] Further, as a preference, a shaft is vertically connected inside the outer body column, the lower end of the shaft is connected to the adjustment arm, a rotating part is arranged above the outer body column, and the rotating output end of the rotating part is connected to the upper end of the shaft; the rotating part drives the shaft to deflect forward and reversely within a range of 180°;

[0016] A sealing cavity is provided in the outer body column, a positioning plug is slidably connected in the sealing cavity, an air control tube is connected to the sealing cavity, the shaft rod is inserted into the middle of the positioning plug, a ring sleeve is slidably sleeved on the shaft rod, and the ring sleeve is rotatably connected in the positioning plug; an outer protective tube is sleeved on the shaft rod, and one end of the outer protective tube is connected to the ring sleeve;

[0017] A column sleeve is fixed inside the outer body column, a guide tube is arranged inside the column sleeve, and the outer protective tube is slidably connected in the guide tube;

[0018] An axle pin is fixed on the side wall of the outer protective tube, and a second guide groove is arranged on the side wall of the guide tube.

[0019] Further, as a preference, the guide tube is rotatably and adjustably arranged in the column sleeve, the guide groove 2 is multiple and circumferentially distributed on the side wall of the guide tube, and the cross-section of the guide groove 2 is an arc structure, a corrugated structure, and a diagonal structure respectively.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention can improve the welding efficiency by using a plurality of arranged welding units to perform multi-point welding at the same time for the welding forming process of the steel mesh, wherein the welding unit can perform two welding processes on the angle formed by the steel bar assembly combination through two laser welders arranged on the adjusting arm, thereby further reinforcing the assembly joint and ensuring the welding strength, and at the same time, it is also beneficial to control the heat affected zone and reduce deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 2 It is a front view of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the welding unit in the present invention;

[0025] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0026] Figure 5 It is a schematic diagram of the structure of the laser welder in the present invention;

[0027] Figure 6 is a cross-sectional view of the outer body column of the present invention;

[0028] In the figure: 1. chassis; 11. drive plate; 12. crossbeam; 13. support beam; 14. sliding plate; 15. mounting beam frame; 2. welding unit; 21. positioning plate; 22. outer body column; 23. fixing plate; 24. external motor; 3. adjusting arm; 31. upper end shaft; 32. side plate; 33. outer rod; 34. inner rod; 35. angle plate; 36. side rod; 37. connecting lining; 38. telescopic rod; 4. laser welder; 41. laser channel; 42. welding sleeve; 43. fixed cone sleeve; 44. annular guide chamber; 45. powder delivery pipe; 46. gap; 47. air flow pipe; 5. shaft rod; 51. rotating part; 52. positioning plug; 53. ring sleeve; 54. outer protective tube; 55. column sleeve; 56. guide tube; 57. shaft pin. DETAILED DESCRIPTION

[0029] See also Figure 1-Figure 6 In an embodiment of the present invention, an automatic welding device for prefabricated building steel bars comprises: a base frame 1, a driving plate 11, a crossbeam 12, a support beam 13 and a welding unit 2, wherein the base frame 1 is composed of two bracket bodies arranged in parallel, a driving plate 11 is symmetrically slidably mounted on the base frame 1, a crossbeam 12 is horizontally fixed between the driving plates 11, a mounting plate is symmetrically fixed on the crossbeam 12, a support beam 13 is horizontally fixed between the mounting plates and located above the crossbeam 12, a guide groove 1 is provided on the support beam 13, a sliding plate 14 is slidably connected in the guide groove 1; a mounting beam frame 15 is transversely fixed on a side of the sliding plate 14 away from the support beam 13, a plurality of welding units 2 are arranged on the mounting beam frame 15, and each of the welding units 2 is horizontally slidably adjusted on the mounting beam frame 15; so as to adjust the working gap between two adjacent welding units, thereby adapting to different steel bar welding prefabrication; wherein a plurality of welding units can perform welding operations simultaneously, thereby improving prefabrication production efficiency;

[0030] The welding unit 2 includes a positioning plate 21, which is slidably mounted on the mounting beam 15. An outer body column 22 is vertically arranged on one side of the positioning plate 21. An adjustment arm 3 is arranged below the inner part of the outer body column 22. Two laser welders 4 are symmetrically distributed on the adjustment arm 3.

[0031] The base frame 1 is provided with a driving unit, and the driving unit controls the driving plate 11 to slide horizontally along the base frame 1. When the steel bars are built at right angles, the welding unit 2 synchronously performs the initial welding operation on the steel bar building angle through two laser welders 4 during the forward displacement of the driving plate 11; and the welding unit 2 synchronously performs the secondary welding operation on the other two steel bar building angles through two laser welders 4 during the reverse displacement of the driving plate 11. It should be noted that when the two laser welders 4 weld the steel bar building angles, the angles are diagonal, ensuring that the two welds are fused at the same time, thereby improving the welding quality.

[0032] In this embodiment, when the steel bars are built at non-right angles, the welding unit 2 performs the initial welding operation on the acute angle formed by the steel bars through the two laser welders 4 synchronously during the forward displacement of the driving plate 11, and performs the secondary welding operation on the obtuse angle formed by the steel bars through the two laser welders 4 synchronously during the reverse displacement of the driving plate 11. On the one hand, it can more accurately control the welding heat input and weld morphology, ensure the welding quality of each corner, reduce defects, and enhance the stability and safety of the structure. On the other hand, it can adapt to the welding requirements of different angles, increasing the flexibility and application scenarios of the equipment.

[0033] As a preferred embodiment, a threaded rod is vertically rotatably connected to the positioning plate 21, a fixing plate 23 is vertically slidably arranged on the positioning plate 21, the fixing plate 23 is slidably connected to the threaded rod through threaded engagement, an external motor 24 is fixed to the positioning plate 21, the output end of the external motor 24 is fixed to the threaded rod, and the outer body column 22 is installed on the fixing plate 23, so that the working height in each welding unit can be individually controlled by each external motor, and the adaptability is strong.

[0034] In this embodiment, the adjustment arm 3 includes an upper shaft 31, and side plates 32 are symmetrically fixed below the upper shaft 31. An inner rod 34 and an outer rod 33 are hinged below the side plates 32. The other ends of the inner rod 34 and the outer rod 33 are rotatably connected to the angle plates 35. The laser welder 4 is fixed on one side of each angle plate 35. The inner rod 34 is rotatably connected to the side rods 36. The side rods 36 are hinged with connecting linings 37. A telescopic rod 38 is vertically fixed inside the upper shaft 31, and one end of the telescopic rod 38 is connected to the connecting lining 37.

[0035] The laser welder 4 is based on the horizontal direction, and its deflection angle range is between 25° and 70°, that is, the telescopic rod can control the installation angle of each laser welder 4 under telescopic adjustment, so that the steel bars can be welded from multiple angles with high flexibility.

[0036] In this embodiment, a laser channel 41 is provided in the middle of the laser welder 4, and a welding sleeve 42 is sleeved on the end thereof, a fixed cone sleeve 43 is coaxially arranged in the welding sleeve 42, an annular guide cavity 44 is provided in the fixed cone sleeve 43, and a plurality of circumferentially distributed inner channels are opened on the side wall of the fixed cone sleeve 43, and each of the inner channels is connected to the annular guide cavity 44;

[0037] A powder delivery pipe 45 is fixedly connected to the welding sleeve 42, and one end of the powder delivery pipe 45 is connected to the annular guide cavity 44;

[0038] A gap 46 is provided between the welding sleeve 42 and the fixed cone sleeve 43 . An airflow pipe 47 is connected to the welding sleeve 42 . The airflow pipe 47 is communicated with the gap 46 .

[0039] In this embodiment, the powder delivery pipe 45 is used to add welding materials during steel bar welding, that is, the powder delivery pipe 45 can accurately control the delivery amount of welding materials (such as metal powder) according to welding requirements to ensure that the steel bar welding joint has sufficient filling materials. In particular, when welding in the obtuse angle area formed by the steel bar construction, since the weld is deep and has a large area, the powder delivery pipe can continuously and evenly deliver welding materials to the welding area to ensure that the weld is fully filled at a large angle, avoid weld depression or incompleteness, ensure welding quality, and help control heat input during welding, reduce welding defects that are prone to occur in obtuse angle areas, such as pores and cracks, and improve the reliability and aesthetics of the welded product.

[0040] As a preferred embodiment, a shaft 5 is vertically connected inside the outer body column 22, the lower end of the shaft 5 is connected to the adjustment arm 3, a rotating part 51 is arranged above the outer body column 22, and the rotating output end of the rotating part 51 is connected to the upper end of the shaft 5; the rotating part 51 drives the shaft 5 to deflect forward and reversely within a range of 180°, thereby effectively adjusting the spatial positioning angle of the laser welder 4;

[0041] The outer body column 22 is provided with a sealing cavity, a positioning plug 52 is slidably connected in the sealing cavity, an air control tube is connected to the sealing cavity, the shaft 5 is inserted into the middle of the positioning plug 52, a ring sleeve 53 is slidably sleeved on the shaft 5, and the ring sleeve 53 is rotatably connected in the positioning plug 52; an outer protective tube 54 is sleeved on the shaft 5, and one end of the outer protective tube 54 is connected to the ring sleeve 53;

[0042] A column sleeve 55 is fixed inside the outer body column 22, a guide tube 56 is arranged inside the column sleeve 55, and the outer protective tube 54 is slidably connected in the guide tube 56;

[0043] An axle pin 57 is fixed on the side wall of the outer protective tube 54, and a guide groove 2 is provided on the side wall of the guide tube 56. It should be noted that the rotating part is mainly used to adjust the working angle of the laser welder 4 before welding, and during the operation of the laser welder 4, the air control tube controls and adjusts the air pressure in the sealing chamber to make the positioning plug 52 slide up and down. At this time, the outer protective tube 54 and the shaft rod 5 can produce appropriate deflection under the sliding action of the axle pin 57 and the guide groove 2, so as to provide steering power for the laser welder 4 during operation.

[0044] In this embodiment, the guide tube 56 is rotatably arranged in the column sleeve 55, and the guide groove 2 is arranged in multiple numbers and distributed circumferentially on the side wall of the guide tube 56. The cross-section of the guide groove 2 is an arc structure, a corrugated structure, and a diagonal structure respectively. That is to say, the steering power range of the laser welder 4 during operation can be strictly controlled according to parameters such as the steel bar specifications, the construction angle, and the weld size. For example, when the shaft pin 57 slides along the guide groove 2 of the corrugated structure on the guide tube 56, the shaft rod 5 can generate a high-frequency small-amplitude deflection at this time, so that the laser welder 4 under the shaft rod 5 can perform a corresponding welding operation on the angle of the steel bar construction within the deflection angle range (that is, maintaining uniform heat input and penetration, reducing thermal damage to surrounding materials, protecting the mechanical properties of the steel bar base material from being affected, and improving the accuracy and reliability of welding).

[0045] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic welding device for prefabricated building steel bars, characterized in that: It includes: A base frame (1), a driving plate (11), a crossbeam (12), a support beam (13) and a welding unit (2), wherein the base frame (1) is composed of two bracket bodies arranged in parallel, a driving plate (11) is symmetrically slidably mounted on the base frame (1), a crossbeam (12) is horizontally fixed between the driving plates (11), a mounting plate is symmetrically fixed on the crossbeam (12), a support beam (13) is horizontally fixed between the mounting plates and located above the crossbeam (12), a guide groove (1) is provided on the support beam (13), a sliding plate (14) is slidably connected in the guide groove (1), a mounting beam frame (15) is transversely fixed on a side of the sliding plate (14) away from the support beam (13), a plurality of welding units (2) are arranged on the mounting beam frame (15), and each welding unit (2) is horizontally slidably arranged on the mounting beam frame (15); The welding unit (2) comprises a positioning plate (21) slidably mounted on the mounting beam (15); an outer tube column (22) is vertically arranged on one side of the positioning plate (21); an adjustment arm frame (3) is arranged at the lower part of the outer tube column (22); and two laser welders (4) are symmetrically distributed on the adjustment arm frame (3); The base frame (1) is provided with a driving unit, and the driving unit controls the driving plate (11) to slide horizontally along the base frame (1); when the steel bars are built at right angles, the welding unit (2) synchronously performs a primary welding operation on the steel bar building angle through two laser welders (4) during the forward displacement of the driving plate (11); and the welding unit (2) synchronously performs a secondary welding operation on the other two steel bar building angles through two laser welders (4) during the reverse displacement of the driving plate (11); The laser welder (4) is provided with a laser channel (41) in the middle, and a welding sleeve (42) is sleeved on the end thereof, a fixed cone sleeve (43) is coaxially arranged inside the welding sleeve (42), an annular guide cavity (44) is provided in the fixed cone sleeve (43), and a plurality of circumferentially distributed inner channels are opened on the side wall of the fixed cone sleeve (43), and each of the inner channels is connected to the annular guide cavity (44); A powder delivery pipe (45) is fixedly connected to the welding sleeve (42), and one end of the powder delivery pipe (45) is connected to the annular guide cavity (44); A gap (46) is provided between the welding sleeve (42) and the fixed cone sleeve (43); an airflow pipe (47) is connected to the welding sleeve (42); and the airflow pipe (47) is in communication with the gap (46); A shaft (5) is vertically connected inside the outer tube column (22), the lower end of the shaft (5) is connected to the adjustment arm frame (3), a rotating portion (51) is arranged above the outer tube column (22), and the rotation output end of the rotating portion (51) is connected to the upper end of the shaft (5); the rotating portion (51) drives the shaft (5) to deflect in a positive and negative direction within a range of 180 degrees; The outer body column (22) is provided with a sealing cavity, a positioning plug (52) is slidably connected in the sealing cavity, an air control tube is connected to the sealing cavity, the shaft rod (5) is inserted into the middle of the positioning plug (52), a ring sleeve (53) is slidably sleeved on the shaft rod (5), and the ring sleeve (53) is rotatably connected in the positioning plug (52); an outer protective tube (54) is sleeved on the shaft rod (5), and one end of the outer protective tube (54) is connected to the ring sleeve (53); A column sleeve (55) is fixed inside the outer body column (22), a guide tube (56) is arranged inside the column sleeve (55), and the outer protective tube (54) is slidably connected to the guide tube (56); An axle pin (57) is fixed on the side wall of the outer protective tube (54), and a second guide groove is provided on the side wall of the guide tube (56).

2. The automatic welding device for prefabricated building steel bars according to claim 1 is characterized in that: When the steel bars are constructed at a non-right angle, the welding unit (2) uses two laser welders (4) to synchronously perform a primary welding operation on the acute angle formed by the steel bars during the forward displacement of the driving plate (11), and uses two laser welders (4) to synchronously perform a secondary welding operation on the obtuse angle formed by the steel bars during the reverse displacement of the driving plate (11).

3. The automatic welding device for prefabricated building steel bars according to claim 1 is characterized in that: A threaded rod is vertically rotatably connected to the positioning plate (21), a fixing plate (23) is vertically slidably arranged on the positioning plate (21), the fixing plate (23) is slidably connected to the threaded rod through threaded engagement, an external motor (24) is fixed to the positioning plate (21), an output end of the external motor (24) is fixed to the threaded rod, and the outer body column (22) is mounted on the fixing plate (23).

4. The automatic welding device for prefabricated building steel bars according to claim 2 is characterized in that: The adjusting arm frame (3) comprises an upper end shaft (31), below which side plates (32) are symmetrically fixed, an inner rod (34) and an outer rod (33) are hingedly connected below the side plates (32), the other ends of the inner rod (34) and the outer rod (33) are rotatably connected to the angle plates (35), the laser welder (4) is fixed to one side of each angle plate (35), the inner rod (34) is rotatably connected to the side rod (36), the side rods (36) are hingedly connected to each other with connecting linings (37), a telescopic rod (38) is vertically fixed inside the upper end shaft (31), one end of the telescopic rod (38) is connected to the connecting lining (37); The laser welder (4) has a deflection angle ranging from 25° to 70°, with the horizontal direction as a reference.

5. The automatic welding device for prefabricated building steel bars according to claim 1 is characterized in that: The powder feeding pipe (45) is used to add welding materials during steel bar welding.

6. The automatic welding device for prefabricated building steel bars according to claim 1, characterized in that: The guide tube (56) is rotatably and adjustably arranged in the column sleeve (55), the guide grooves (2) are multiple and circumferentially distributed on the side wall of the guide tube (56), and the cross-sections of the guide grooves (2) are arc-shaped, corrugated, and oblique-line structures, respectively.

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