Double-head laser welding machine for iron frame

Abstract

The utility model discloses a double-head laser welding machine for an iron frame. The double-head laser welding machine comprises a positioning jig mechanism used for positioning material strips, an upper-layer laser welding mechanism located above the positioning jig mechanism and a lower-layer laser welding mechanism located below the positioning jig mechanism. The positioning jig mechanism comprises two jig platforms which are arranged in parallel, material pressing assemblies arranged on the jig platforms respectively, a sheet pushing assembly arranged on one side of the junction of the two jig platforms, and a seam closing driving piece used for driving material strips on the two jig platforms to be subjected to seam closing; according to the utility model, the pushing piece assembly and the joint closing driving piece are arranged, the pushing piece assembly provides a positioning reference for the material strips, and the joint closing driving piece closes the joint of the two material strips after the positioning is completed, so as to adapt to the characteristics of irregular and uneven notches and easy deformation in welding, solve the problems of welding dislocation, high and low edges and deformation, and improve the welding quality. And the iron frame welding quality and efficiency are improved.

Description

Technical Field

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

[0002] The existing panel light frame structure usually uses an aluminum frame, which is formed by extrusion. 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 track and use lower-cost iron frames to replace the original aluminum frames.

[0003] The iron frame of the panel light is made 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 strips are fitted and then welded. However, since the cuts of the iron frame strips are irregular and uneven after cutting, and the iron frame is easily deformed during the welding process, welding misalignment and high and low side problems are prone to occur. In addition, most of the existing technologies are manually welded, which has problems such as high workload for operators, low welding efficiency, and high defect rate. Utility Model Content

[0004] The purpose of the utility model is to provide an iron frame double-head laser welding machine, which provides a positioning reference for the material strip by arranging a push-piece assembly and a seam driving component. After the positioning is completed, the intersection of the two material strips is seamed by the seam driving component to adapt to the characteristics of irregular and uneven incisions and easy deformation during welding, solves the problems of welding misalignment, high and low edges and deformation, and improves the quality and efficiency of iron frame welding.

[0005] In order to achieve the above purpose, the following technical solutions are adopted:

[0006] An iron frame double-head laser welding machine comprises a positioning jig mechanism for positioning a material strip, an upper laser welding mechanism located above the positioning jig mechanism, and a lower laser welding mechanism located below the positioning jig mechanism; the positioning jig mechanism comprises two jig platforms arranged in parallel, a material pressing assembly arranged on each jig platform, a sheet pushing assembly arranged on one side of the intersection of the two jig platforms, and a seam-joining driving member for driving the material strips on the two jig platforms to join; each material pressing assembly is used to press a material strip onto a jig platform; the sheet pushing assembly is used to provide a positioning reference for the material strip; the seam-joining driving member is used to drive the two jig platforms to approach so that the material strips on the two jig platforms are joined; the upper laser welding mechanism is used to weld from the top surface of the material strip, and the lower laser welding mechanism is used to weld from the bottom surface of the material strip.

[0007] Preferably, the number of the positioning fixture mechanisms is two, and the two positioning fixture mechanisms are arranged in parallel; the upper laser welding mechanism and the lower laser welding mechanism can be moved and switched between the two positioning fixture mechanisms.

[0008] Preferably, the push-piece assembly comprises a positioning piece, a clamping link connected to the positioning piece, and a push-piece driving member drivingly connected to the clamping link; when the positioning piece is placed between two material strips, each material strip uses a side surface of the positioning piece as a positioning reference.

[0009] Preferably, the two pressing components of the same positioning fixture mechanism are arranged in an eight-shaped structure, and the positioning piece is provided on one side of the closing end of the eight-shaped structure.

[0010] Preferably, the pressing assembly comprises a pressing block and a pressing driving member for driving the pressing block to move up and down.

[0011] Preferably, the driving output end of the joint driving member is drivingly connected to one of the jig platforms, so as to drive the jig platform to approach or move away from another jig platform.

[0012] Preferably, the upper laser welding mechanism includes an upper laser welding head, a C-axis drive assembly for driving the upper laser welding head to rotate, a first X-axis drive assembly for driving the upper laser welding head to move along the X-axis direction, a first Y-axis drive assembly for driving the upper laser welding head to move along the Y-axis direction, and a first Z-axis drive assembly for driving the upper laser welding head to move along the Z-axis direction.

[0013] Preferably, the lower laser welding mechanism includes a lower laser welding head, a second X-axis driving assembly for driving the lower laser welding head to move along the X-axis direction, and a second Z-axis driving assembly for driving the lower laser welding head to move along the Z-axis direction.

[0014] Preferably, it also includes two wire feeding mechanisms arranged in parallel; the wire feeding mechanism includes a wire inlet nozzle, a front wire feeding wheel, a rear wire feeding wheel, a wire outlet nozzle, a wire feeding nozzle, and a wire feeding drive assembly for driving the front wire feeding wheel and the rear wire feeding wheel to roll and feed the wire; the wire feeding nozzle is arranged on one side of the upper laser welding head.

[0015] Preferably, the wire feeding drive assembly includes a wire feeding drive, a reducer arranged at the output end of the wire feeding drive, and a driving gear arranged at the output end of the reducer; the front wire feeding wheel and the rear wire feeding wheel are each provided with a driven gear, and the driving gear is arranged in the middle and meshingly connected with the driven gear.

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

[0017] The utility model provides a push-piece assembly and a joint driving member. The push-piece assembly provides a positioning reference for the material strip. After the positioning is completed, the intersection of the two material strips is jointed by the joint driving member to adapt to the characteristics of irregular and uneven incisions and easy deformation during welding, solve the problems of welding misalignment, high and low sides and deformation, and improve the quality and efficiency of iron frame welding. At the same time, by providing an upper laser welding mechanism and a lower laser welding mechanism, double-head welding of the iron frame material strip is achieved, and the front and back sides are formed at one time, with high welding efficiency and reduced manual turning. In the preferred embodiment, by providing two positioning fixture mechanisms, sharing an upper laser welding mechanism and a lower laser welding mechanism, a double-station structure can be used to achieve positioning while welding and loading, thereby improving production efficiency while reducing the purchase cost of equipment. 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 the upper laser welding mechanism, the lower laser welding mechanism, and the positioning fixture mechanism of the utility model;

[0020] Figure 3 It is a three-dimensional diagram of the positioning fixture mechanism of the utility model;

[0021] Figure 4 It is a three-dimensional diagram of the material pressing assembly of the utility model;

[0022] Figure 5 It is a three-dimensional diagram of the upper laser welding mechanism and the lower laser welding mechanism of the utility model;

[0023] Figure 6 It is a three-dimensional diagram of the wire feeding mechanism of the utility model;

[0024] The accompanying drawings illustrate:

[0025] 1—upper layer laser welding mechanism, 2—lower layer laser welding mechanism,

[0026] 3—Jig platform, 4—Pressing assembly,

[0027] 5—push piece assembly, 6—seam driving component,

[0028] 7—wire feeding mechanism, 8—material strip,

[0029] 9—support rod, 11—upper laser welding head,

[0030] 12—C-axis drive assembly, 13—first X-axis drive assembly,

[0031] 14—first Y-axis driving assembly, 15—first Z-axis driving assembly,

[0032] 21—lower layer laser welding head, 22—second X-axis drive assembly,

[0033] 23—second Z-axis driving assembly, 41—pressing block,

[0034] 42—pressing drive member, 51—positioning piece,

[0035] 52—clamping connecting rod, 53—push plate driving member,

[0036] 71—wire feed nozzle, 72—front wire feed wheel,

[0037] 73—rear wire feeding wheel, 74—wire outlet nozzle,

[0038] 75—wire feeding nozzle, 76—wire feeding drive member,

[0039] 77—reducer, 78—driving gear. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Reference Figures 1 to 6As shown, the utility model provides an iron frame double-head laser welding machine, which is mainly used for 45° incision welding of iron frame strips of panel lights. The welding process is stable, the weld is beautiful, the product has small deformation and good strength. An iron frame double-head laser welding machine includes a positioning fixture mechanism for positioning the strip 8, an upper laser welding mechanism 1 located above the positioning fixture mechanism, and a lower laser welding mechanism 2 located below the positioning fixture mechanism; the positioning fixture mechanism includes two fixture platforms 3 arranged in parallel, a material pressing assembly 4 arranged on each fixture platform 3, a pusher assembly 5 arranged on one side of the intersection of the two fixture platforms 3, and a joint driving member 6 for driving the strips 8 on the two fixture platforms 3 to be joined; specifically, the joint driving member 6 is a cylinder. Each pressing assembly 4 is used to press a material strip 8 onto a jig platform 3; the pushing assembly 5 is used to provide a positioning reference for the material strip 8; the seam driving component 6 is used to drive the two jig platforms 3 closer together so that the material strips 8 on the two jig platforms 3 are seamed; the upper laser welding mechanism 1 is used to weld from the top surface of the material strip 8, and the lower laser welding mechanism 2 is used to weld from the bottom surface of the material strip 8.

[0044] In order to further improve the welding efficiency, two positioning jig mechanisms are set, and the two positioning jig mechanisms are arranged in parallel; the upper laser welding mechanism 1 and the lower laser welding mechanism 2 can move and switch between the two positioning jig mechanisms. The equipment adopts a double-station structure, which can realize welding and positioning at the same time (when the iron frame material strip 8 on one of the positioning jig mechanisms is being welded, the other positioning jig mechanism can load and position at the same time), improve production efficiency while reducing the purchase cost of the equipment, and can be flexibly matched according to needs.

[0045] The push-piece assembly 5 includes a positioning piece 51, a clamping connecting rod 52 connected to the positioning piece 51, and a push-piece driving member 53 connected to the clamping connecting rod 52; specifically, the push-piece driving member 53 is a cylinder. When the positioning piece 51 is placed between two material strips 8, each material strip 8 uses one side of the positioning piece 51 as a positioning reference. Since the cuts of the iron frame material strips 8 are irregular and uneven after cutting, there are many defects after welding. The utility model is provided with a push-piece assembly 5 and a joint driving member 6, and firstly, the positioning piece 51 in the push-piece assembly 5 is erected at the intersection of the cuts of the two material strips 8, so that the cuts of the material strips 8 can be tightly positioned by the side of the positioning piece 51, and after the positioning is completed, the push-piece driving member 53 drives the positioning piece 51 to withdraw. Since there is a gap at the intersection of the cuts of the two material strips 8 after the positioning piece 51 withdraws (because the positioning piece 51 is inserted between the cuts of the two material strips 8 during positioning), the joint driving member 6 is provided so that the cuts of the two material strips 8 can fit together.

[0046] The two pressing components 4 of the same positioning fixture mechanism are arranged in an eight-shaped structure, and the positioning piece 51 is arranged on the closing side of the eight-shaped structure. The pressing component 4 includes a pressing block 41 and a pressing driving member 42 for driving the pressing block 41 to rise and fall. The power output end of the pressing driving member 42 is connected to the pressing block 41 through a connecting block, and the bottom end surface of the pressing block 41 is provided with a pressing groove that matches the top surface of the material strip 8. Specifically, the pressing driving member 42 is a cylinder.

[0047] The driving output end of the joint driving member 6 is connected to one of the jig platforms 3 for driving the jig platform 3 to move closer to or away from the other jig platform 3. The two jig platforms 3 of the same positioning jig mechanism are configured by setting one of the jig platforms 3 to be fixed and the other jig platform 3 to be movable, and installing a slide rail and a slider guide at the bottom of the movable jig platform 3, but are not limited to this guide sliding structure. Since the material strip 8 is fixed to the jig platform 3 by the pressing assembly 4, the movable jig platform 3 is driven by the joint driving member 6 to move closer to the fixed jig platform 3, thereby driving the cuts of the two material strips 8 to fit together.

[0048] The upper laser welding mechanism 1 includes an upper laser welding head 11, a C-axis driving assembly 12 for driving the upper laser welding head 11 to rotate, a first X-axis driving assembly 13 for driving the upper laser welding head 11 to move along the X-axis direction, a first Y-axis driving assembly 14 for driving the upper laser welding head 11 to move along the Y-axis direction, and a first Z-axis driving assembly 15 for driving the upper laser welding head 11 to move along the Z-axis direction. The upper layer of the equipment adopts a 4-axis robot arm, which can weld the material strip 8 in the plane and at the vertical angle, meeting the diverse welding requirements of the material strip 8.

[0049] In a specific embodiment, the first X-axis drive assembly 13, the first Z-axis drive assembly 15, the first Y-axis drive assembly 14, and the C-axis drive assembly 12 are arranged in sequence, and the upper laser welding head 11 is driven and connected to the C-axis drive assembly 12. Specifically, the first X-axis drive assembly 13, the first Z-axis drive assembly 15, the first Y-axis drive assembly 14, and the C-axis drive assembly 12 all include motors. Furthermore, the stroke of the C-axis drive assembly 12 is -12°-52°, and the speed is 0-360° / s; the maximum stroke of the first Z-axis drive assembly 15 is 140mm, and the speed is 0-500mm / s; the maximum stroke of the first Y-axis drive assembly 14 is 40mm, and the speed is 0-500mm / s; the maximum stroke of the first X-axis drive assembly 13 is 520mm, and the speed is 0-1000mm / s.

[0050] The lower laser welding mechanism 2 includes a lower laser welding head 21, a second X-axis driving assembly 22 for driving the lower laser welding head 21 to move along the X-axis direction, and a second Z-axis driving assembly 23 for driving the lower laser welding head 21 to move along the Z-axis direction. The lower layer of the equipment adopts a 2-axis robotic arm, which can weld the multi-layer plane of the material strip 8. The upper and lower laser welding mechanisms move simultaneously, and the front and back sides are formed at one time, with high welding efficiency and reduced manual flipping.

[0051] Specifically, the second X-axis drive assembly 22 and the second Z-axis drive assembly 23 both include motors. Furthermore, the maximum manual adjustment stroke of the second Z-axis drive assembly 23 is 30 mm; the maximum stroke of the second X-axis drive assembly 22 is 230 mm, and the speed is 0-1000 mm / s.

[0052] The utility model provides an iron frame double-head laser welding machine, which also includes two wire feeding mechanisms 7 arranged in parallel. By setting the wire feeding mechanism 7, a wire adding function can be optionally configured. Customers can choose whether to fill wire according to the welding characteristics of the product. Since laser belongs to fine welding, the amount of wire filling and the welding position are controllable, and the welding effect is more stable. In another specific embodiment, the wire feeding mechanism 7 includes a wire inlet nozzle 71, a front wire feeding wheel 72, a rear wire feeding wheel 73, a wire outlet nozzle 74, a wire feeding nozzle 75, and a wire feeding drive assembly for driving the front wire feeding wheel 72 and the rear wire feeding wheel 73 to roll and feed wire; the wire feeding nozzle 75 is arranged on one side of the upper laser welding head 11. The wire feeding drive assembly includes a wire feeding drive member 76, a reducer 77 arranged at the output end of the wire feeding drive member 76, and a driving gear 78 arranged at the output end of the reducer 77; the front wire feeding wheel 72 and the rear wire feeding wheel 73 are each provided with a driven gear, and the driving gear 78 is arranged in the middle and meshed with the driven gear.

[0053] In addition, in order to facilitate the support of the larger iron frame material strip 8, a support rod 9 is extended outwardly on one side of each positioning fixture mechanism to prevent the iron frame material strip 8 from shaking and causing an unstable welding process.

[0054] The action flow of the utility model is as follows:

[0055] 1) The push-piece driving member 53 drives the positioning piece 51 to extend so that the positioning piece 51 is located at the intersection of the two fixture platforms 3;

[0056] 2) On each of the two fixture platforms 3 of the same positioning fixture mechanism, a material strip 8 is placed, and the cutout of each material strip 8 is tightly fitted against one side of the positioning piece 51 for positioning;

[0057] 3) The material pressing driving member 42 drives the material pressing block 41 to press the material strip 8 onto the fixture platform 3 from the top surface of the material strip 8;

[0058] 4) The push-piece driving member 53 drives the positioning piece 51 to retract and exit between the cutouts of the two material strips 8;

[0059] 5) The joint driving member 6 drives the movable jig platform 3 to approach the fixed jig platform 3 so that the cuts of the two material strips 8 fit together;

[0060] 6) The upper laser welding mechanism 1 and the lower laser welding mechanism 2 simultaneously laser weld the iron frame material strip 8 according to a preset program;

[0061] 7) After welding is completed, the material pressing driving member 42 drives the material pressing block 41 to rise to loosen the material strip 8, and the welded iron frame material strip 8 is taken away externally.

[0062] 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 iron frame double-head laser welding machine, characterized in that: It includes a positioning jig mechanism for positioning the material strip, an upper laser welding mechanism located above the positioning jig mechanism, and a lower laser welding mechanism located below the positioning jig mechanism; the positioning jig mechanism includes two jig platforms arranged in parallel, a material pressing assembly arranged on each jig platform, a sheet pushing assembly arranged on one side of the intersection of the two jig platforms, and a seam-joining driving member for driving the material strips on the two jig platforms to join; each material pressing assembly is used to press a material strip on a jig platform; the sheet pushing assembly is used to provide a positioning reference for the material strip; the seam-joining driving member is used to drive the two jig platforms to approach so that the material strips on the two jig platforms are joined; the upper laser welding mechanism is used to weld from the top surface of the material strip, and the lower laser welding mechanism is used to weld from the bottom surface of the material strip.

2. The iron frame double-head laser welding machine according to claim 1, characterized in that: The number of the positioning fixture mechanisms is two, and the two positioning fixture mechanisms are arranged in parallel; the upper laser welding mechanism and the lower laser welding mechanism can both be moved and switched between the two positioning fixture mechanisms.

3. The iron frame double-head laser welding machine according to claim 1, characterized in that: The push-piece assembly includes a positioning piece, a clamping link connected to the positioning piece, and a push-piece driving member drivingly connected to the clamping link; when the positioning piece is placed between two material strips, each material strip uses one side of the positioning piece as a positioning reference.

4. The iron frame double-head laser welding machine according to claim 3 is characterized in that: The two material pressing components of the same positioning fixture mechanism are arranged in an eight-shaped structure, and the positioning piece is arranged on one side of the closing end of the eight-shaped structure.

5. The iron frame double-head laser welding machine according to claim 4, characterized in that: The material pressing assembly comprises a material pressing block and a material pressing driving member for driving the material pressing block to rise and fall.

6. The iron frame double-head laser welding machine according to claim 1, characterized in that: The driving output end of the joint driving member is drivingly connected to one of the jig platforms, and is used to drive the jig platform to approach or move away from another jig platform.

7. The iron frame double-head laser welding machine according to claim 2, characterized in that: The upper laser welding mechanism includes an upper laser welding head, a C-axis driving assembly for driving the upper laser welding head to rotate, a first X-axis driving assembly for driving the upper laser welding head to move along the X-axis direction, a first Y-axis driving assembly for driving the upper laser welding head to move along the Y-axis direction, and a first Z-axis driving assembly for driving the upper laser welding head to move along the Z-axis direction.

8. The iron frame double-head laser welding machine according to claim 2, characterized in that: The lower layer laser welding mechanism includes a lower layer laser welding head, a second X-axis driving assembly for driving the lower layer laser welding head to move along the X-axis direction, and a second Z-axis driving assembly for driving the lower layer laser welding head to move along the Z-axis direction.

9. The iron frame double-head laser welding machine according to claim 7, characterized in that: It also includes two wire feeding mechanisms arranged in parallel; the wire feeding mechanism includes a wire inlet nozzle, a front wire feeding wheel, a rear wire feeding wheel, a wire outlet nozzle, a wire feeding nozzle, and a wire feeding drive assembly for driving the front wire feeding wheel and the rear wire feeding wheel to roll and feed the wire; the wire feeding nozzle is arranged on one side of the upper laser welding head.

10. The iron frame double-head laser welding machine according to claim 9, characterized in that: The wire feeding drive assembly includes a wire feeding drive, a reducer arranged at the output end of the wire feeding drive, and a driving gear arranged at the output end of the reducer; a driven gear is respectively arranged on the front wire feeding wheel and the rear wire feeding wheel, and the driving gear is arranged in the middle and meshed with the driven gear.

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