Eight-head laser welding machine for welding iron frame

Abstract

The utility model discloses an eight-head laser welding machine for welding an iron frame. The eight-head laser welding machine comprises a welding device for welding four corners of the iron frame respectively, each welding device comprises a welding jig, an upper-layer laser welding mechanism arranged above the welding jig and a lower-layer laser welding mechanism arranged below the welding jig; the welding jig comprises a jig platform, a material pressing module used for pressing the iron frame corner on the jig platform, and an outer corner positioning module used for positioning from the outer side wall of the iron frame corner. According to the utility model, the upper and lower surfaces of the corners of the iron frame are welded together through eight-head laser welding, four corners of the iron frame are welded once, the welding efficiency is high, the labor is saved, the product deformation is small, and the welding qualification rate is high. And meanwhile, the equipment is high in automation degree and simple to operate, and does not need to be operated by professionals.

Description

Technical Field

[0001] The utility model relates to the technical field of automation equipment, in particular to an eight-head laser welding machine for welding iron frames. Background Art

[0002] Existing panel light frames usually use aluminum frames, which are formed by extrusion, with smooth cuts and easy welding, but the product cost is high and not competitive in the market. As the price of raw materials continues to rise, the profits of many small and medium-sized enterprises are constantly squeezed, and they can only change their tracks and use lower-cost iron frames to replace the original aluminum frames.

[0003] The iron frame of the panel light is composed of multiple iron frame strips welded together. The ends of the iron frame strips are first processed into 45° cuts, and the cuts of the two iron frame strips are fitted together before being welded and fixed. Most of the existing technologies use traditional butt welding, argon arc welding, gas shielded welding and other manual welding methods to weld the iron frame. The temperature is difficult to control, resulting in large deformation of the iron frame after welding, low welding efficiency, high defect rate and other problems, and the professional skills of the operator are required to be high. Therefore, there is an urgent need for a device that can efficiently and stably weld the iron frame. Utility Model Content

[0004] The purpose of the utility model is to provide an eight-head laser welding machine for welding iron frames, which uses eight-head laser welding to achieve welding of the upper and lower sides of the iron frame corners, and the four corners of the iron frame are welded at one time, with high welding efficiency, labor saving, small product deformation, and high welding qualification rate. At the same time, the equipment has a high degree of automation and is easy to operate, and does not require professional personnel to operate.

[0005] To achieve the above objectives, the following technical solutions are adopted:

[0006] An eight-head laser welding machine for welding an iron frame comprises a welding device for welding each of the four corners of the iron frame; each welding device comprises a welding jig, an upper laser welding mechanism arranged above the welding jig, and a lower laser welding mechanism arranged below the welding jig; the welding jig comprises a jig platform, a pressing module for pressing the iron frame corner onto the jig platform, and an outer corner positioning module for positioning from the outer side wall of the iron frame corner.

[0007] Preferably, the jig platform includes a first positioning plate, and a second positioning plate detachably arranged on the top surface of the first positioning plate; one end of the second positioning plate forms a first pointed angle structure, and the first pointed angle structure is provided with a first welding slot hole passing through its top corner.

[0008] Preferably, the jig platform also includes two third positioning plates detachably arranged on the top surface of the first positioning plate; the two third positioning plates are respectively arranged on the two side walls of the first pointed angle structure, and intersect at the top corner of the first pointed angle structure to form a second pointed angle structure; a second welding slot is formed between the ends of the two third positioning plates corresponding to the second pointed angle structure, and the first welding slot is connected to the second welding slot and is located on the same straight line; the top end surface of the second positioning plate is higher than the top end surface of the third positioning plate, so that a step structure is formed between the second positioning plate and the third positioning plate.

[0009] Preferably, the first positioning plate is provided with a notch structure at a position corresponding to the first welding slot, and the area of ​​the notch structure is larger than the first welding slot.

[0010] Preferably, the pressing module includes a pressing plate movably arranged on the top surface of the jig platform, a pressing guide block arranged on each of the two opposite outer sides of the pressing plate, and a pressing drive member used to drive the pressing plate to press the iron frame corner from the top; a third welding slot hole is opened at one end of the pressing plate corresponding to the first welding slot hole and the second welding slot hole.

[0011] Preferably, the outer corner positioning module comprises an outer corner positioning block, an outer corner positioning guide block arranged on two opposite outer sides of the outer corner positioning block, and an outer corner positioning driving member used for driving the outer corner positioning block to press and position the outer side wall of the iron frame corner.

[0012] Preferably, the first end face of the outer corner positioning block is provided with an outer corner positioning groove that is compatible with the outer side wall of the iron frame corner; the outer corner positioning drive component is drivingly connected to the second end face of the outer corner positioning block, and the interior of the outer corner positioning block is provided with a reinforcing rod arranged from its first end face to the second end face.

[0013] Preferably, it also includes a table panel, and the welding fixture is installed on the table panel; a loading station is respectively provided on two opposite outer sides of the table panel, and a material box is provided on each loading station.

[0014] Preferably, the upper laser welding mechanism comprises an upper laser welding gun, an upper translation driving module for driving the upper laser welding gun to translate, and an upper height adjusting module for adjusting the height of the upper laser welding gun.

[0015] Preferably, the lower layer laser welding mechanism comprises a lower layer laser welding gun, a lower layer translation driving module for driving the lower layer laser welding gun to translate, and a lower layer height adjusting module for adjusting the height of the lower layer laser welding gun.

[0016] By adopting the above scheme, the beneficial effects of the utility model are:

[0017] The utility model realizes the welding of the upper and lower sides of the iron frame corners by using eight-head laser welding, and the four corners of the iron frame are welded at one time, with high welding efficiency, saving manpower, small product deformation, and high welding qualification rate. At the same time, the equipment has a high degree of automation and is easy to operate, and does not require professional operation. In the preferred solution, the equipment adopts double-manual loading, which improves production efficiency while ensuring stable welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a three-dimensional diagram of four welding jigs of the utility model;

[0020] Figure 3 This is a three-dimensional diagram of the welding fixture of the utility model in use;

[0021] Figure 4 A three-dimensional diagram of the fixture platform of the utility model;

[0022] Figure 5 It is a three-dimensional diagram of the pressing module of the utility model;

[0023] Figure 6 It is a three-dimensional diagram of the outer corner positioning module of the utility model;

[0024] Figure 7 It is a three-dimensional diagram of the upper laser welding mechanism and the lower laser welding mechanism of the utility model;

[0025] Figure 8 This is a three-dimensional diagram of the material box of the utility model in use;

[0026] Fig. 9 It is a three-dimensional diagram of the welding chassis of the utility model;

[0027] The accompanying drawings illustrate:

[0028] 1—welding fixture, 2—upper laser welding mechanism, 3—lower laser welding mechanism, 4—table panel, 5—material box, 6—iron frame material strip, 7—welding chassis, 8—welding rack, 9—ventilation cooling fan, 10—chiller, 11—fixture platform, 12—pressing module, 13—outer corner positioning module, 21—upper laser welding gun, 22—upper translation drive module, 23—upper height adjustment module, 31—lower laser welding gun, 32—lower translation drive module Group, 33—lower layer height adjustment module, 51—box body, 52—hook, 111—first positioning plate, 112—second positioning plate, 113—first welding slot, 114—third positioning plate, 115—second welding slot, 121—pressing plate, 122—pressing guide block, 123—pressing drive member, 124—third welding slot, 131—outer corner positioning block, 132—outer corner positioning guide block, 133—outer corner positioning drive member, 134—reinforcement rod. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] Reference Figures 1 to 9As shown, the utility model provides an eight-head laser welding machine for welding iron frames, which is used to realize laser welding of the four corners of the iron frame of the panel lamp, including a welding device for welding the four corners of the iron frame; each welding device includes a welding jig 1, an upper laser welding mechanism 2 arranged above the welding jig 1, and a lower laser welding mechanism 3 arranged below the welding jig 1; the welding jig 1 includes a jig platform 11, a pressing module 12 for pressing the iron frame corner onto the jig platform 11, and an outer corner positioning module 13 for positioning from the outer side wall of the iron frame corner.

[0033] Among them, the fixture platform 11 includes a first positioning plate 111, and a second positioning plate 112 detachably arranged on the top surface of the first positioning plate 111; one end of the second positioning plate 112 forms a first pointed angle structure, and the first pointed angle structure is provided with a first welding slot 113 through its top corner, and the first welding slot 113 is provided through the upper and lower end surfaces of the second positioning plate 112.

[0034] The jig platform 11 also includes two third positioning plates 114 detachably arranged on the top surface of the first positioning plate 111; the two third positioning plates 114 are respectively arranged in contact with the two side walls of the first pointed angle structure, and meet at the top corner of the first pointed angle structure to form a second pointed angle structure; a second welding slot 115 is formed between the ends of the two third positioning plates 114 corresponding to the second pointed angle structure, and the first welding slot 113 is connected to the second welding slot 115 and is located on the same straight line. Since the inner wall of the iron frame material strip 6 is provided with a step structure, in order to make the jig platform 11 more accurate in positioning the iron frame material strip 6, the top end surface of the second positioning plate 112 is higher than the top end surface of the third positioning plate 114, so that a step structure is formed between the second positioning plate 112 and the third positioning plate 114.

[0035] The first positioning plate 111 has a notch structure at the position corresponding to the first welding slot 113, and the notch structure is opened through the upper and lower end surfaces of the first positioning plate 111. In order to facilitate the lower laser welding mechanism 3 to weld the iron frame corner through the first welding slot 113, the area of ​​the notch structure is larger than the first welding slot 113.

[0036] By providing the first welding slot 113 , the second welding slot 115 , the third welding slot 124 and the notch structure on the first positioning plate 111 , it is convenient for the upper laser welding mechanism 2 and the lower laser welding mechanism 3 to weld both sides of the iron frame corner.

[0037] The pressing module 12 includes a pressing plate 121 movably arranged on the top surface of the fixture platform 11, a pressing guide block 122 arranged on the two opposite outer sides of the pressing plate 121, and a pressing driving member 123 for driving the pressing plate 121 to press the iron frame corner from the top. Specifically, the pressing driving member 123 is a pressing cylinder; one end of the pressing plate 121 is provided with a third welding slot 124 corresponding to the first welding slot 113 and the second welding slot 115.

[0038] The outer corner positioning module 13 includes an outer corner positioning block 131, an outer corner positioning guide block 132 disposed on two opposite outer sides of the outer corner positioning block 131, and an outer corner positioning driving member 133 for driving the outer corner positioning block 131 to press and position the outer side wall of the iron frame corner. Specifically, the outer corner positioning driving member 133 is an outer corner positioning cylinder.

[0039] The first end face of the outer corner positioning block 131 is provided with an outer corner positioning groove adapted to the outer side wall of the iron frame corner; the outer corner positioning driving member 133 is drivingly connected to the second end face of the outer corner positioning block 131, and a reinforcing rod 134 arranged from the first end face to the second end face is arranged inside the outer corner positioning block 131. Since the outer corner positioning driving member 133 drives the outer corner positioning block 131 to apply a force from the first end face to the second end face to the outer side wall of the iron frame corner when the outer corner positioning of the iron frame corner is realized, the reinforcing rod 134 is arranged inside the outer corner positioning block 131 to ensure the positioning accuracy of the outer side wall of the iron frame corner.

[0040] It also includes a table panel 4, on which the welding jig 1 is installed; a loading station is provided on each of the two opposite outer sides of the table panel 4, and a material box 5 is provided on each loading station. By setting up two loading stations, two people can load materials at the same time, and each person places two iron frame material strips 6 on the jig platform 1. After loading, the two ends of each iron frame material strip 6 are located on two adjacent welding jigs 1, and the four iron frame material strips 6 are connected end to end to form a quadrilateral iron frame, and two adjacent iron frame material strips 6 are connected to form an iron frame corner, that is, there are four iron frame corners.

[0041] The material box 5 includes two box bodies 51 separated and symmetrically arranged. Each box body 51 includes a box bottom plate and three box side plates surrounding the top three sides of the box bottom plate, and no box side plate is arranged on the opposite side of the two box bodies 51. In addition, at least one hook 52 is arranged on the top of the box side plate near the welding chassis 7.

[0042] Furthermore, after installation, a certain distance is reserved between the two box bodies 51, so that after the iron frame material strip 6 is placed in the material box, it is convenient to take out the iron frame material strip 6. Specifically, the total length of the box bottom plates of the two box bodies 51 is less than 1 / 2 of the length of the iron frame material strip 6.

[0043] The hook 52 is configured to be bent outwardly at the top of the box side plate and formed as an integral body, and extends in the horizontal direction to form a hook. The hooks of the two box bodies 51 of the same material box 5 extend in opposite directions, and a hook column or other fixing parts are provided on the table panel 4 to fix the hook. The structural design of the material box 5 is ingenious in that the two box bodies 51 can be spread apart to both sides after the iron frame material strip 6 is placed, but because the hooks of the two box bodies 51 extend in opposite directions, the box 51 can be stably installed on the table panel 4 to prevent the box body 51 from accidentally falling when taking materials.

[0044] The upper laser welding mechanism 2 includes an upper laser welding gun 21, an upper translation driving module 22 for driving the upper laser welding gun 21 to translate, and an upper height adjusting module 23 for adjusting the height of the upper laser welding gun 21. Specifically, the upper translation driving module 22 includes a servo motor and a lead screw; the upper height adjusting module 23 is configured as a manually adjustable fine-tuning module, which may adopt a combination of a lead screw and a hand wheel.

[0045] The lower laser welding mechanism 3 includes a lower laser welding gun 31, a lower translation driving module 32 for driving the lower laser welding gun 31 to translate, and a lower height adjusting module 33 for adjusting the height of the lower laser welding gun 31. Specifically, the lower translation driving module 32 and the lower height adjusting module 33 both include a servo motor and a lead screw.

[0046] In addition, the eight-head laser welding machine for welding iron frames provided by the utility model also includes a welding chassis 7, a welding frame 8 is also provided on the top of the welding chassis 7, and the table panel 4 is installed through the welding frame 8. In a specific embodiment, the pressing module 12, the fixture platform 11, and the outer corner positioning module 13 of each welding fixture 1 are arranged in sequence from the middle of the table panel 4 to the outside.

[0047] The two loading stations are located on one of the two opposite sides of the welding chassis 7, and an electric control cabinet is arranged inside the other two opposite sides. The side wall of the welding chassis 7 is provided with at least one ventilation cooling fan 9 corresponding to each electric control cabinet. The lower laser welding mechanism 3 is installed inside the welding chassis 7, that is, below the table panel 4. In addition, a chiller 10 is also equipped to cool the laser and the upper laser welding mechanism 2 and the lower laser welding mechanism 3 to ensure the stable operation of the machine equipment.

[0048] The upper laser welding mechanism 2 and the lower laser welding mechanism 3 both include a laser, which is installed inside the welding chassis 7. One side of the upper laser welding gun 21 and the lower laser welding gun 31 is provided with an alignment laser pen for aligning the laser focus.

[0049] The action flow of this utility model is as follows:

[0050] 1) Two persons stand face to face at the two opposite outer loading stations of the table panel 4, each person takes two iron frame material strips 6 from the material box 5 and places them on the fixture platform 11, and the four iron frame material strips 6 are connected end to end in sequence;

[0051] 2) After placing the iron frame material strip 6, manually press the start button, and the pressing module 12 presses the top of the iron frame corner to position it;

[0052] 3) The outer corner positioning module 13 is pressed and positioned from the outer side wall of the iron frame corner;

[0053] 4) The upper laser welding mechanism 2 and the lower laser welding mechanism 3 of the four welding devices work simultaneously, start the action according to the preset program, move the laser welding gun to the specified position, and weld the upper and lower double layers of the iron frame corner;

[0054] 5) After welding is completed, the upper laser welding mechanism 2 and the lower laser welding mechanism 3 are reset, the welding fixture 1 is released, and the welded iron frame is taken out manually. The action is completed and the operation is repeated in this way.

[0055] The utility model realizes the welding of the upper and lower sides of the iron frame corners by eight-head laser welding. The four corners of the iron frame are welded at one time, with high welding efficiency, labor saving, small product deformation and high welding qualification rate. At the same time, the equipment has a high degree of automation and is easy to operate, and does not require professional operation. In the preferred embodiment, the equipment adopts double-manual loading to improve production efficiency while ensuring stable welding quality. The machine equipment has strong compatibility. By adjusting the welding fixture 1, the upper laser welding mechanism 2, and the lower laser welding mechanism 3, the iron frame material strip 6 products with a length of 595mm to 620mm can be welded, and the iron frame material strip 6 with a thickness of 0.18mm to 0.5mm can be welded.

[0056] The above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model. Obviously, the above embodiments of the present utility model are only examples for clearly illustrating the present utility model, and are not limitations on the implementation methods of the present utility model. For ordinary technicians in the relevant field, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the protection scope of the claims of the present utility model.

Claims

1. An eight-head laser welding machine for welding iron frames, characterized in that: It comprises a welding device for welding the four corners of the iron frame; each welding device comprises a welding jig, an upper laser welding mechanism arranged above the welding jig, and a lower laser welding mechanism arranged below the welding jig; the welding jig comprises a jig platform, a pressing module for pressing the iron frame corner onto the jig platform, and an outer corner positioning module for positioning from the outer side wall of the iron frame corner.

2. The eight-head laser welding machine for welding iron frames according to claim 1 is characterized in that: The fixture platform includes a first positioning plate and a second positioning plate detachably arranged on the top surface of the first positioning plate; one end of the second positioning plate forms a first sharp angle structure, and the first sharp angle structure is provided with a first welding slot hole penetrating through its top corner.

3. The eight-head laser welding machine for welding iron frames according to claim 2 is characterized in that: The jig platform also includes two third positioning plates detachably arranged on the top surface of the first positioning plate; the two third positioning plates are respectively arranged on the two side walls of the first pointed angle structure, and intersect at the top corner of the first pointed angle structure to form a second pointed angle structure; a second welding slot is formed between the ends of the two third positioning plates corresponding to the second pointed angle structure, and the first welding slot is connected to the second welding slot and is located on the same straight line; the top end surface of the second positioning plate is higher than the top end surface of the third positioning plate, so that a step structure is formed between the second positioning plate and the third positioning plate.

4. The eight-head laser welding machine for welding iron frames according to claim 2 is characterized in that: The first positioning plate is provided with a notch structure at a position corresponding to the first welding slot, and the area of ​​the notch structure is larger than the first welding slot.

5. The eight-head laser welding machine for welding iron frames according to claim 3 is characterized in that: The pressing module includes a pressing plate movably arranged on the top surface of the fixture platform, a pressing guide block arranged on each of the two opposite outer sides of the pressing plate, and a pressing drive member used to drive the pressing plate to press the iron frame corner from the top; a third welding slot hole is opened at one end of the pressing plate corresponding to the first welding slot hole and the second welding slot hole.

6. The eight-head laser welding machine for welding iron frames according to claim 1 is characterized in that: The outer corner positioning module comprises an outer corner positioning block, an outer corner positioning guide block arranged at two opposite outer sides of the outer corner positioning block, and an outer corner positioning driving member used for driving the outer corner positioning block to press and position the outer side wall of the iron frame corner.

7. The eight-head laser welding machine for welding iron frames according to claim 6 is characterized in that: The first end face of the outer corner positioning block is provided with an outer corner positioning groove adapted to the outer side wall of the iron frame corner; the outer corner positioning driving member is drivingly connected to the second end face of the outer corner positioning block, and a reinforcing rod is arranged inside the outer corner positioning block from its first end face to the second end face.

8. The eight-head laser welding machine for welding iron frames according to claim 1 is characterized in that: It also includes a table panel, and the welding fixture is installed on the table panel; a loading station is respectively arranged on two opposite outer sides of the table panel, and a material box is arranged on each loading station.

9. The eight-head laser welding machine for welding iron frames according to claim 1, characterized in that: The upper laser welding mechanism comprises an upper laser welding gun, an upper translation driving module for driving the upper laser welding gun to translate, and an upper height adjusting module for adjusting the height of the upper laser welding gun.

10. The eight-head laser welding machine for welding iron frames according to claim 1, characterized in that: The lower layer laser welding mechanism comprises a lower layer laser welding gun, a lower layer translation driving module for driving the lower layer laser welding gun to translate, and a lower layer height adjusting module for adjusting the height of the lower layer laser welding gun.

Images