Welding Equipment and Welding Method for Welding a Steel Ring and a Steel Bar

Abstract

The present invention discloses a welding device and a welding method for welding a steel ring and a steel bar. The welding device for welding a steel ring and a steel bar includes a frame, a steel ring storage device, a steel ring pushing device, a welding mechanism and a steel ring positioning device; the steel ring positioning device includes a fixed block, a protruding portion extends from the front end of the fixed block, a positioning groove is provided at the front end of the protruding portion, a steel bar insertion groove is formed between the front end face of the protruding portion and the positioning groove, and the fixed block is provided with a sliding groove which communicates with the positioning groove; the steel ring pushing device includes a pushing piece that slides along the sliding groove; when the steel ring in the steel ring storage device slides into the sliding groove and the pushing piece pushes the steel ring into the positioning groove, the end face of the external steel bar is inserted into the steel bar insertion groove and abuts against the outer circumference of the steel ring, and the welding mechanism aligns with the connection between the steel ring and the steel bar and performs welding; the welding method is a method for using the welding device to weld a steel ring and a steel bar; its advantages are that the working efficiency is improved and the labor intensity is reduced; the welding position is relatively fixed, and the welding accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding, and in particular to a welding device and a welding method for welding a steel ring and a steel bar. Background Art

[0002] Currently, a steel ring and a steel bar are generally welded together by a laser welding method. During welding, it is necessary to manually butt the steel ring and the steel bar, and then move them directly below the laser welding head. The laser welding mechanism is used to weld the butting part of the steel ring and the steel bar. Since the butting and welding of the steel ring and the steel bar are both manually operated, the welding efficiency is low, and many quality problems are likely to occur. At the same time, the relative positions of the steel ring and the steel bar, the size and position consistency of the welding spots are poor, and the relative focal position of the butting part of the steel ring and the steel bar is not fixed, which affects the welding depth, resulting in inconsistent welding strength and easy production of defective products; moreover, repeated manual operations are prone to fatigue, and it is necessary to observe the laser closely, which is likely to cause damage to the human eyes. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies of the prior art and provide a welding device and a welding method for welding a steel ring and a steel bar.

[0004] A technical solution of the present invention:

[0005] A welding device for welding a steel ring and a steel bar includes a frame, a steel ring storage device for storing steel rings, a steel ring pushing device for pushing the steel ring to the welding position, a welding mechanism for welding the steel ring and the steel bar, and a steel ring positioning device for positioning the steel ring; the steel ring positioning device includes a fixed block fixedly connected to the frame. A protruding portion extends forward from the front end of the fixed block. A positioning groove is provided at the front end of the protruding portion. A steel bar insertion groove is formed between the front end face of the protruding portion and the positioning groove. A sliding groove is provided in the fixed block along the length direction, and the sliding groove communicates with the positioning groove; the steel ring storage device is arranged directly above the fixed block and communicates with the sliding groove, and the steel ring in the steel ring storage device slides into the sliding groove; the steel ring pushing device includes a pushing piece sliding along the sliding groove and a first driving unit for pushing the pushing piece to slide along the sliding groove; when the steel ring in the steel ring storage device slides into the sliding groove and the pushing piece pushes the steel ring into the positioning groove, the end face of the external steel bar is inserted into the steel bar insertion groove and butts against the outer circumference of the steel ring, and the welding mechanism aligns with the target welding position for welding the steel ring and the steel bar, wherein the target welding position is the position when the end face of the steel bar fits against the outer circumference of the steel ring.

[0006] A preferred solution is that the welding equipment for welding the steel ring and the steel bar also includes a clamping device, which includes a movable pressure strip and a second driving unit for driving the movable pressure strip to move; the movable pressure strip is movably pressed on the upper surface of the raised portion, and when the second driving unit drives the movable pressure strip to press on the upper surface of the positioning groove, the movable pressure strip covers part of the positioning groove, and the covered part is away from the steel bar insertion groove.

[0007] A preferred solution is that the welding equipment for welding steel rings and steel bars also includes a steel bar support structure, the steel bar support structure includes a support block, the support block is fixedly connected to the front end face of the fixed block, and a receiving groove for accommodating the protrusion is provided inwardly on one side of the support block close to the fixed block, and the upper surface of the support block is flush with the bottom surface of the slide groove.

[0008] A preferred solution is that the front end surface of the push piece is inwardly concavely provided with a push groove matching the size of the steel ring. When the push piece pushes the steel ring to slide into the positioning groove, the steel ring is clamped between the positioning groove and the push groove.

[0009] A preferred solution is that the steel bar insertion groove is a structure that penetrates from top to bottom, and the welding mechanism includes an upper laser welding head, a lower laser welding head and a sliding frame; the upper laser welding head is arranged at the top of the sliding frame, and the lower laser welding head is arranged at the bottom of the sliding frame. The sliding frame is slidably connected to the frame, and the sliding direction of the sliding frame is perpendicular to the sliding groove. When the upper laser welding head slides to the top of the target welding position and the lower laser welding head slides to the bottom of the target welding position, the upper laser welding head welds the upper side of the target welding position, and the lower laser welding head welds the lower side of the target welding position.

[0010] A preferred solution is that the steel ring storage device includes a stacking box that passes through from top to bottom, a push block and a third driving unit that pushes the push block to move, the bottom of the stacking box is connected to the slide slot, the push block is located at the top of the stacking box, and the third driving unit pushes the push block to slide into the stacking box.

[0011] A preferred solution is that a cover plate covering the slide groove is provided on the upper surface of the fixed block, and the cover plate covers the push piece and there is a gap between the cover plate and the push piece.

[0012] A method for welding a steel ring and a steel bar using a welding device comprises the following steps:

[0013] The steel ring is placed in the steel ring storage device, and the steel ring slides along the steel ring storage device into the chute;

[0014] The first driving unit pushes the steel ring into the positioning groove through the pushing piece;

[0015] Take the steel bar and insert it into the steel bar slot and connect it with the outer circumference of the steel ring;

[0016] The welding mechanism is aligned with the butt joint of the steel bar and the steel ring, and welds the welding joint of the steel ring and the steel bar.

[0017] Based on the above technical solutions, the beneficial effects of the present invention are as follows: The steel ring pushing device can automatically push the steel ring into the positioning groove, and the positioning groove can position the steel ring. When the external steel ring is inserted into the steel bar insertion groove and abuts against the outer circumference of the steel ring, the welding mechanism aligns with the target welding position for welding the steel ring and the steel bar. The entire welding process is fully automated, improving work efficiency and reducing labor intensity. The steel bar insertion groove can also position the steel bar. When the external steel bar is inserted into the steel bar insertion groove and abuts against the outer circumference of the steel ring, the welding position during each welding of the steel bar and the steel ring is relatively fixed, the size and position of the welding points are consistent, and the relative focal position of the welded joint between the steel bar and the steel ring is fixed, improving welding accuracy and the welding strength is consistent.

[0018] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. In order to make the above and other purposes, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are specifically given and described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a perspective view of the present invention;

[0020] Figure 2 is a partial perspective Figure 1 ;

[0021] Figure 3 is Figure 2 a partial enlarged view of A in

[0022] Figure 4 is a partial perspective Figure 2 ;

[0023] Figure 5 is a perspective view of the steel ring positioning device and the steel ring in the present invention;

[0024] Figure 6 is a perspective view of the steel bar support structure in the present invention;

[0025] Figure 7 is a perspective view of the steel ring positioning device in the present invention;

[0026] Figure 8 is an exploded view of the steel ring pushing device in the present invention;

[0027] Figure 9 is a perspective view of the pusher plate in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To elaborate on the idea and purpose of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] The first embodiment, asFigures 1 to 9 As shown in the figure, a welding device for welding a steel ring and a steel bar includes a frame 10, a steel ring storage device 20 for storing the steel ring 70, a steel ring pushing device 30 for pushing the steel ring 70 to the welding position, a welding mechanism 40 for welding the steel ring 70 and the steel bar, and a steel ring positioning device 50 for positioning the steel ring 70; the steel ring positioning device 50 includes a fixed block 51 fixedly connected to the frame 10. A convex portion 52 extends forward from the front end of the fixed block 51. A positioning groove 521 is provided at the front end of the convex portion 52. A steel bar insertion groove 522 is formed between the front end face of the convex portion 52 and the positioning groove 521. A sliding groove 511 is provided in the fixed block 51 along the length direction, and the sliding groove 511 communicates with the positioning groove 521; the steel ring storage device 20 is arranged directly above the fixed block 51 and communicates with the sliding groove 511. The steel ring 70 in the steel ring storage device 20 slides into the sliding groove 511; the steel ring pushing device 30 includes a pushing piece 31 sliding along the sliding groove 511 and a first driving unit 32 for pushing the pushing piece 31 to slide along the sliding groove 511; when the steel ring 70 in the steel ring storage device 20 slides into the sliding groove 511 and the pushing piece 31 pushes the steel ring 70 into the positioning groove 521, the end face of the external steel bar is inserted into the steel bar insertion groove 522 and abuts against the outer circumference of the steel ring 70. The welding mechanism 40 aligns with the target welding position for welding the steel ring 70 and the steel bar. Among them, the target welding position is the position when the end face of the steel bar abuts against the outer circumference of the steel ring 70.

[0030] As Figures 1 to 9 shown in the figure, the steel ring 70 is placed in the steel ring storage device 20, and the steel ring 70 slides along the steel ring storage device 20 into the sliding groove 511; the first driving unit 32 pushes the steel ring 70 into the positioning groove 521 through the pushing piece 31; a steel bar is taken and inserted into the steel bar insertion groove 522 and abuts against the outer circumference of the steel ring 70; the welding mechanism 40 aligns with the butt joint of the steel bar and the steel ring 70 and welds the welded joint of the steel ring 70 and the steel bar. The welded steel bar and the steel ring 70 are taken out. The steel ring 70 can be automatically sent into the positioning groove 521, and the positioning groove 521 can fix and position the steel ring 70, facilitating the butt joint of the steel bar and the steel ring 70 and improving the welding efficiency. The first driving unit 32 is a cylinder. The main shaft of the first driving unit 32 is connected to the pushing piece 31 through a connecting block 33. The first driving unit 32 pushes the connecting block 33 to slide on the surface of the fixed block 51, thereby pushing the pushing piece 31 to slide in the sliding groove 511.

[0031] As Figures 1 to 9As shown, the welding equipment for welding the steel ring and the steel bar also includes a clamping device 60, which includes a movable pressure strip 61 and a second driving unit 62 for driving the movable pressure strip 61 to move; the second driving unit 62 is a cylinder, and the movable pressure strip 61 is movably pressed on the upper surface of the protrusion 52, and the movable pressure strip 61 can slide relative to the upper surface of the protrusion 52. When the second driving unit 62 drives the movable pressure strip 61 to press on the upper surface of the positioning groove 521, the movable pressure strip 61 covers part of the positioning groove 521, and the covered part is far away from the steel bar insertion groove 522, and the uncovered part of the positioning groove 521 is close to the steel bar insertion groove 522. The uncovered part facilitates the welding mechanism 40 to weld the steel ring 70, and the front of the steel ring 70 The end portion extends out of the positioning groove 521. When the steel ring 70 is pushed into the positioning groove 521, there is a gap between the movable pressure strip 61 and the steel ring 70. The movable pressure strip 61 is non-contact with the steel ring 70. The movable pressure strip 61 can prevent the steel ring 70 from detaching from the positioning groove 521 during the process of being pushed into the positioning groove 521. The arc groove of the positioning groove 521, the diameter of the positioning groove 521 matches the diameter of the steel ring 70, the width of the steel bar insertion groove 522 is smaller than the diameter of the positioning groove 521 or the diameter of the steel ring 70. When the pushing piece 31 pushes the steel ring 70 into the positioning groove 521, since the width of the steel bar insertion groove 522 is smaller than the diameter of the steel ring 70, the steel ring 70 will not detach from the positioning groove 521 and enter the steel bar insertion groove 522.

[0032] like Figures 1 to 9 As shown, the welding equipment for welding the steel ring and the steel bar also includes a steel bar support structure 80, which includes a support block 81, which is fixedly connected to the front end surface of the fixed block 51, and a receiving groove 82 for receiving the protrusion 52 is concavely provided on one side of the support block 81 close to the fixed block 51, and the upper surface of the support block 81 is flush with the bottom surface of the slide groove 511. During welding, the steel bar is inserted into the steel bar insertion groove 522 and docked with the steel ring 70. At this time, the support block 81 supports the steel bar to facilitate welding.

[0033] like Figures 1 to 9 As shown, the front end surface of the push piece 31 is concavely provided with a pushing groove 311 that matches the size of the steel ring 70. When the push piece 31 pushes the steel ring 70 to slide into the positioning groove 521, the steel ring 70 is clamped between the positioning groove 521 and the pushing groove 311. The positioning groove 521 and the pushing groove 311 form a circular groove. The circular groove has the same diameter as the steel ring 70. When the steel ring 70 is clamped between the positioning groove 521 and the pushing groove 311, the steel ring 70 can be prevented from moving during the welding process.

[0034] like Figures 1 to 9As shown in the figure, the steel bar insertion groove 522 is a structure that penetrates up and down. The welding mechanism 40 includes an upper laser welding head 41, a lower laser welding head 42, and a sliding frame 43. The upper laser welding head 41 is arranged on the top of the sliding frame 43, the lower laser welding head 42 is arranged on the bottom of the sliding frame 43, and the sliding frame 43 is slidably connected to the machine frame 10. The sliding frame 43 can slide along the machine frame 10, and the sliding direction of the sliding frame 43 is perpendicular to the chute 511. The upper laser welding head 41 is located above the target welding position, and the lower laser welding head 42 is located below the target welding position. When the upper laser welding head 41 slides above the target welding position and the lower laser welding head 42 slides below the target welding position, the upper laser welding head 41 welds the upper side of the target welding position, and the lower laser welding head 42 welds the lower side of the target welding position. The upper laser welding head 41 welds the upper side of the connection between the steel bar and the steel ring 70, that is, welds the upper side of the target welding position, and at the same time, the lower laser welding head 42 welds the lower side of the connection between the steel bar and the steel ring 70, that is, welds the lower side of the target welding position.

[0035] As Figures 1 to 9 shown in the figure, the steel ring storage device 20 includes a stacking box 21 that penetrates up and down, a push block (not marked in the figure), and a third driving unit 23 that pushes the push block to move. The third driving unit 23 is a cylinder. The bottom of the stacking box 21 is communicated with the chute 511. The push block is located on the top of the stacking box 21, and the third driving unit 23 pushes the push block to slide into the stacking box 21. The steel rings 70 are stacked in the stacking box 21, and the third driving unit 23 pushes the steel rings 70 into the chute 511 through the push block.

[0036] As Figures 1 to 9 shown in the figure, the upper surface of the fixed block 51 is provided with a cover plate 53 that covers the chute 511. The cover plate 53 covers the pusher plate 31 and there is a gap between the cover plate 53 and the pusher plate 31. There is a gap between the cover plate 53 and the pusher plate 31, and the pusher plate 31 can slide freely along the chute 511.

[0037] Second Embodiment: As Figures 1 to 9 shown in the figure, a welding method for welding a steel ring 70 and a steel bar using a welding device includes the following steps:

[0038] Put the steel ring 70 into the steel ring storage device 20, and the steel ring 70 slides into the chute 511 along the steel ring storage device 20;

[0039] The first driving unit 32 pushes the steel ring 70 into the positioning groove 521 through the pusher plate 31;

[0040] Insert the steel bar into the steel bar insertion groove 522 and dock it with the outer circumference of the steel ring 70;

[0041] The welding mechanism 40 aligns with the docking part of the steel bar and the steel ring 70, and welds the welding part of the steel ring 70 and the steel bar.

[0042] Third Embodiment: As Figures 1 to 9 shown, a welding method for welding a steel ring 70 and a steel bar using a welding device includes the following steps:

[0043] Place the steel ring 70 into the steel ring storage device 20, and the steel ring 70 slides along the steel ring storage device 20 into the chute 511;

[0044] The first driving unit 32 pushes the steel ring 70 into the positioning groove 521 through the pusher piece 31;

[0045] Insert the steel bar into the steel bar insertion groove 522 and butt it against the outer circumference of the steel ring 70, and the support block 81 supports the steel bar;

[0046] When the upper laser welding head 41 slides above the target welding position and the lower laser welding head 42 slides below the target welding position, the upper laser welding head 41 welds the upper side of the target welding position, and the lower laser welding head 42 welds the lower side of the target welding position;

[0047] The second driving unit drives the movable pressing strip 61 away from the positioning groove 521, and takes out the welded steel bar and steel ring 70.

[0048] The above are the specific embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A welding device for welding a steel ring and a steel bar, including a frame, characterized in that, it further includes a steel ring storage device for storing steel rings, a steel ring pushing device for pushing the steel ring to the welding position, a welding mechanism for welding the steel ring and the steel bar, and a steel ring positioning device for positioning the steel ring; the steel ring positioning device includes a fixed block fixedly connected to the frame, a protruding portion extends forward at the front end of the fixed block, a positioning groove is provided at the front end of the protruding portion, a steel bar insertion groove is formed between the front end face of the protruding portion and the positioning groove, a sliding groove is provided along the length direction of the fixed block, and the sliding groove communicates with the positioning groove; the steel ring storage device is arranged directly above the fixed block and communicates with the sliding groove, and the steel ring in the steel ring storage device slides into the sliding groove; the steel ring pushing device includes a pushing piece sliding along the sliding groove and a first driving unit for pushing the pushing piece to slide along the sliding groove; when the steel ring in the steel ring storage device slides into the sliding groove and the pushing piece pushes the steel ring into the positioning groove, the end face of the external steel bar is inserted into the steel bar insertion groove and abuts against the outer circumference of the steel ring, and the welding mechanism aligns with the target welding position for welding the steel ring and the steel bar, wherein the target welding position is the position when the end face of the steel bar abuts against the outer circumference of the steel ring, and the welding device for welding the steel ring and the steel bar further includes a pressing device, the pressing device includes a movable pressing strip and a second driving unit for driving the movable pressing strip to move; the movable pressing strip is movably pressed on the upper surface of the protruding portion, and when the second driving unit drives the movable pressing strip to press on the upper surface of the positioning groove, the movable pressing strip covers a part of the positioning groove, and the covered part is away from the steel bar insertion groove, and the welding device for welding the steel ring and the steel bar further includes a steel bar support structure, the steel bar support structure includes a support block, the support block is fixedly connected to the front end face of the fixed block, a receiving groove for receiving the protruding portion is concavely provided on the side of the support block close to the fixed block, the upper surface of the support block is flush with the bottom surface of the sliding groove, and the width of the steel bar insertion groove is smaller than the diameter of the positioning groove.

2. The welding device for welding a steel ring and a steel bar according to claim 1, characterized in that, a pushing groove matching the size of the steel ring is concavely provided on the front end face of the pushing piece, and when the pushing piece pushes the steel ring to slide into the positioning groove, the steel ring is clamped between the positioning groove and the pushing groove.

3. The welding device for welding a steel ring and a steel bar according to claim 1, characterized in that, the steel bar insertion groove is a structure that penetrates up and down, and the welding mechanism includes an upper laser welding head, a lower laser welding head and a sliding frame; the upper laser welding head is arranged at the top of the sliding frame, the lower laser welding head is arranged at the bottom of the sliding frame, the sliding frame is slidably connected to the frame, the sliding direction of the sliding frame is perpendicular to the sliding groove, and when the upper laser welding head slides above the target welding position and the lower laser welding head slides below the target welding position, the upper laser welding head welds the upper side of the target welding position, and the lower laser welding head welds the lower side of the target welding position.

4. The welding device for welding a steel ring and a steel bar according to claim 1, characterized in that, The steel ring storage device includes a stacking box that passes through from top to bottom, a push block and a third driving unit that pushes the push block to move. The bottom of the stacking box is connected to the slide slot, the push block is located at the top of the stacking box, and the third driving unit pushes the push block to slide into the stacking box.

5. The welding equipment for welding steel rings and steel bars according to claim 1, It is characterized in that A cover plate covering the slide groove is disposed on the upper surface of the fixed block, and the cover plate covers the push piece and there is a gap between the cover plate and the push piece.

6. A method for welding a steel ring and a steel bar using the welding equipment according to any one of claims 1 to 5, It is characterized in that The following steps are involved: The steel ring is placed in the steel ring storage device, and the steel ring slides along the steel ring storage device into the chute; The first driving unit pushes the steel ring into the positioning groove through the pushing piece; Take the steel bar and insert it into the steel bar slot and connect it with the outer circumference of the steel ring; The welding mechanism is aligned with the butt joint of the steel bar and the steel ring, and welds the welding joint of the steel ring and the steel bar.

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