Automatic feeding and discharging structure applied to laser welding machine

Abstract

The automatic feeding and discharging structure comprises a machining device, a stacking device used for stacking first welding parts is arranged in the machining device, and a workpiece transferring device capable of moving the lowermost first welding part to one side is arranged in the machining device. A transfer base used for transferring a second welding piece is arranged in the machining device, a guide rail and a balance keeping mechanism are arranged on the machining device, and an upper fixing limiting plate capable of being matched with the transfer base to fix a first welding piece and the second welding piece is arranged on the machining device. Two metal pieces can be rapidly fed, aligned and automatically clamped and fixed, welding treatment is conducted around a connecting seam through laser welding, one-way discharging is rapidly completed after welding is completed, welded workpieces are automatically discharged, the machining actions can be repeated, the multiple procedures are more coherent, the machining time is saved, input of manpower and material resources is reduced, and the production efficiency is improved. The production efficiency is improved.

Description

Technical Field

[0001] The invention relates to laser welding, and in particular to an automatic loading and unloading structure used in a laser welding machine. Background Art

[0002] Laser welding is a technology that uses a laser beam as a heat source to locally heat the metal material to a molten state and then quickly cools and solidifies it, thereby achieving a firm connection between metal parts. In the process of welding two metal parts, the two metal parts need to be loaded, positioned, fixed, welded around the circumferential outer wall of the pipe, and unloaded. Manual assisted processing is required in the process, that is, each of the above steps requires manual participation, which is inefficient and labor-intensive, and is not conducive to mass production.

[0003] Therefore, the existing laser welding process needs to be further improved. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic loading and unloading structure used in a laser welding machine, which can realize the automatic loading, positioning, fixing, welding around the circumferential outer wall of the pipe and unloading of two metal parts, saving manpower and material resources and improving production efficiency.

[0005] In order to achieve the above object, the present invention adopts the following scheme:

[0006] An automatic loading and unloading structure used in a laser welding machine comprises a processing device, wherein the processing device is provided with a stacking device for stacking first welding parts, the processing device is provided with a workpiece transfer device capable of moving the first welding part at the bottom to one side, the processing device is provided with a transfer base for transferring a second welding part, the processing device is provided with a guide track and a balance holding mechanism, the processing device is provided with an upper fixed limit plate capable of cooperating with the transfer base to fix the first welding part and the second welding part, the workpiece transfer device is provided with a rotary welding head assembly for welding around the connection between the first welding part and the second welding part, the processing device is provided with a discharge channel, a one-way discharge assembly is provided between the discharge channel and the guide track; a lateral synchronization holding assembly for maintaining the same lateral position is provided between the workpiece transfer device and the transfer base;

[0007] The guide rail is used to drive the transfer base to move along a reverse "L"-shaped path, and to enable the transfer base to move from the bottom to the stacking device and then to one side;

[0008] The balance maintaining mechanism is used to maintain the balance of the transfer base during the movement;

[0009] The one-way unloading assembly can drive the welded workpiece to be transferred to the unloading channel when the transfer base descends.

[0010] Furthermore, the processing device comprises a shell, and a device base is arranged inside the shell.

[0011] Furthermore, the stacking device comprises a storage tube arranged on the outer shell, and a plurality of stacked tube-shaped parts are stored in the storage tube.

[0012] The workpiece transfer device comprises a fixed bracket arranged on the equipment base, the fixed bracket is provided with a transverse track, an intermediate transfer plate is provided on the transverse track, the intermediate transfer plate is provided with a through hole, and a downward elastic positioning plate is provided below the intermediate transfer plate;

[0013] The through hole can be aligned with the lower end of the storage tube;

[0014] The downward elastic positioning plate is used to limit the descending distance of the first welding part.

[0015] Furthermore, the downward elastic positioning plate includes a plate movable seat arranged on the fixed bracket, a movable limiting plate is movably arranged in the plate movable seat, and an elastic structure for pressing the movable limiting plate outward is arranged in the plate movable seat.

[0016] Further, the guide track includes a main body plate arranged on the base of the equipment, an L-shaped guide groove is arranged on the main body plate, a movable shaft body is movably arranged in the L-shaped guide groove, a motor drive assembly and a swing main shaft are arranged on the main body plate, the motor drive assembly and the swing main shaft are rotated and transmitted through a gear transmission assembly, a swing rod is arranged at the rear end of the swing main shaft, the length of the swing rod covers the range of the L-shaped guide groove, a straight slot is arranged on the swing rod, the movable shaft body is inserted into the straight slot, and the transfer base is fixedly connected to the front end of the movable shaft body;

[0017] When the transfer base is lifted upward, the first welding part and the second welding part are pressed tightly by cooperating with the upper fixed limiting plate;

[0018] Furthermore, the L-shaped guide groove includes a vertical groove and a transverse groove arranged at the upper right of the vertical groove, and an oblique groove is connected between the vertical groove and the transverse groove.

[0019] Furthermore, the balance maintaining mechanism includes a vertical lifting guide rod arranged on the base of the equipment, a vertical lifting member is movably installed on the vertical lifting guide rod, a transverse straight groove is arranged on the vertical lifting member, a rectangular parallel retaining member is arranged at the rear end of the movable shaft body, and the rectangular parallel retaining member is movably arranged in the transverse straight groove and one of its sides moves close to the inner wall surface of the transverse straight groove.

[0020] Furthermore, the rotary welding head assembly includes an annular groove arranged on the outside of the through hole, the annular groove is arranged on the lower surface of the intermediate transfer plate, an annular rotating seat is rotatably arranged in the annular groove, a plurality of laser welding heads arranged toward the weld position are arranged on the annular rotating seat, a control motor assembly for driving the annular rotating seat to rotate reciprocally is arranged on the intermediate transfer plate, and a transmission gear assembly is arranged between the control motor assembly and the annular rotating seat for transmission.

[0021] Further, the one-way unloading assembly includes a central rotating shaft arranged between the unloading channel and the vertical groove, a transfer swing plate is arranged on the central rotating shaft, a reset coil spring assembly is arranged on the main body plate, the reset coil spring assembly is connected to the central rotating shaft, the reset coil spring assembly can keep the transfer swing plate in a downward flipping state, a limit block for limiting the downward flipping angle of the transfer swing plate is arranged on the main body plate, and a staggered slot is arranged on the transfer base, and the transfer swing plate can pass through the staggered slot;

[0022] When the second welding piece is placed on the transfer base and moves upward, it pushes the transfer swing plate to flip upward and pass over the transfer swing plate;

[0023] When the transfer base is placed with the second welded part and the first welded part and moves downward, the welded workpiece cannot pass over the transfer swing plate, so the welded workpiece falls on the transfer swing plate and is unloaded to the unloading channel.

[0024] Furthermore, the transfer base includes a workpiece support plate, and the workpiece support plate is provided with a workpiece positioning and mounting groove.

[0025] In summary, the present invention has the following beneficial effects compared with the prior art:

[0026] The present invention solves the shortcomings of the existing laser welding process. Through the structural setting of the present invention, it has the following advantages: two metal parts can be quickly loaded and aligned, automatically clamped and fixed, laser welding is performed around the connecting seam, and one-way unloading is quickly completed after welding. The welded workpiece is automatically unloaded, and the above processing actions can be repeated. Multiple processes are more coherent, saving processing time, reducing the investment in manpower and material resources, and improving production efficiency. It also has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the present invention;

[0028] Figure 2 It is a rear view of the present invention;

[0029] Figure 3 It is a schematic diagram of the material preparation structure of two welding metal parts of the present invention;

[0030] Figure 4 It is a schematic diagram of the feeding structure of two welding metal parts of the present invention;

[0031] Figure 5 It is a schematic diagram of the fixed welding structure of two welding metal parts of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the process of withdrawing and unloading after welding is completed in the present invention;

[0033] Figure 7 It is a schematic diagram of the one-way unloading working structure of the present invention;

[0034] Figure 8 This is a schematic diagram of the one-way unloading and resetting structure of the present invention;

[0035] Fig. 9 A perspective view of the present invention;

[0036] Fig.10 It is a schematic diagram of the internal structure of the present invention; DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-10The present invention provides an automatic loading and unloading structure used in a laser welding machine, comprising a processing device 1, characterized in that: a stacking device 2 for stacking first welding parts is provided in the processing device 1, a workpiece transfer device 3 capable of moving the first welding part at the bottom to one side is provided in the processing device 1, a transfer base 4 for transferring the second welding part is provided in the processing device 1, a guide rail 5 and a balance maintaining mechanism 6 are provided on the processing device 1, an upper fixed limit plate 10 capable of cooperating with the transfer base 4 to fix the first welding part and the second welding part is provided on the processing device 1, a rotating welding head assembly 7 for performing surrounding welding on the connection between the first welding part and the second welding part is provided on the workpiece transfer device 3, a unloading channel 8 is provided in the processing device 1, and a one-way unloading assembly 9 is provided between the unloading channel 8 and the guide rail 5; a lateral synchronization maintaining assembly 11 for maintaining the same lateral position is provided between the workpiece transfer device 3 and the transfer base 4;

[0039] The guide rail 5 is used to drive the transfer base 4 to move along a reverse “L”-shaped path, and to enable the transfer base 4 to move from the bottom through the stacking device 2 and then to one side;

[0040] The balance maintaining mechanism 6 is used to maintain the balance of the transfer base 4 during the movement;

[0041] The one-way unloading assembly 9 can drive the welded workpiece to be transferred to the unloading channel 8 when the transfer base 4 descends.

[0042] The processing device 1 of the present invention comprises a housing 101, wherein a device base 102 is disposed in the housing 101;

[0043] Material preparation: pre-stacking a plurality of first welding pieces in the stacking device 2, and the first welding piece at the bottom enters the workpiece transfer device 3;

[0044] According to the actual situation, the second welding piece can be sent to the transfer base 4 by manual or conveying mechanism for fixing;

[0045] Loading: start the guide rail 5, the guide rail 5 drives the second welding piece to move to the right, and the balance maintaining mechanism 6 maintains the balance of the second welding machine during the movement;

[0046] The workpiece transfer device 3 is driven to follow the synchronous movement through the lateral synchronous holding component 11; (that is, the first welding part and the second welding part are always in the same lateral position, but the height direction interval between them is not affected);

[0047] Positioning and fixing: When the first welding part and the second welding part are moved to the rightmost side, the first welding part and the second welding part are fixed and clamped by the upper fixed limiting plate 10 and the gradually rising transfer base 4, and moved to the rightmost side for processing;

[0048] Welding: At this time, the rotary welding head assembly 7 can be started manually or by using a control module, and the rotary welding head assembly 7 performs welding around the first welding piece and the weld position of the second welding;

[0049] Unloading: After welding is completed, the first welding part and the second welding part are designed as one body. At this time, the guide rail 5 is reset, and the welded workpiece is driven to move to the position of the one-way unloading assembly 9. At this time, the welded workpiece is transferred to the unloading channel 8 through the one-way unloading assembly 9 to complete unloading;

[0050] Finally, repeat the “Material Preparation” process.

[0051] The stacking device 2 of the present invention comprises a storage tube 201 disposed on the housing 101 , wherein a plurality of stacked tubular components are stored in the storage tube 201 .

[0052] The workpiece transfer device 3 includes a fixed bracket 301 arranged on the equipment base 102, a transverse track 302 is arranged on the fixed bracket 301, an intermediate transfer plate 303 is arranged on the transverse track 302, a through hole 304 is arranged on the intermediate transfer plate 303, and a downward elastic positioning plate 305 is arranged below the intermediate transfer plate 303;

[0053] The through hole 304 can be aligned with the lower end of the storage tube 201;

[0054] The downward elastic positioning plate 305 is used to limit the descending distance of the first welding part.

[0055] The downward elastic positioning plate 305 of the present invention comprises a plate movable seat 3051 arranged on the fixed bracket 301, a movable limit plate 3052 is movably arranged in the plate movable seat 3051, and an elastic structure 3053 for pressing the movable limit plate 3052 outward is arranged in the plate movable seat 3051;

[0056] The stacked tubular welded parts are in the storage tube 201, and the bottom is temporarily supported by the movable stop plate 3052. When the through hole 304 moves to the right, the bottom tubular welded part moves to the right along with it, and finally completes welding with the second welded part.

[0057] When the welded workpiece moves to the left to return to its original position, the movable limit plate 3052 will hit the outer wall of the welded tubular weldment. At this time, the movable limit plate 3052 is compressed by the elastic structure 3053, and automatically returns to its original position when the welded tubular weldment is detached, so that the movable limit plate 3052 continues to be at the bottom of the through hole 304 to support the next tubular weldment.

[0058] The guide rail 5 of the present invention comprises a main body plate 501 arranged on the equipment base 102, the main body plate 501 is provided with an L-shaped guide groove 502, a movable shaft 503 is movably arranged in the L-shaped guide groove 502, a motor drive assembly 504 and a swing main shaft 505 are arranged on the main body plate 501, the motor drive assembly 504 and the swing main shaft 505 are rotated and transmitted through a gear transmission assembly, a swing rod 506 is arranged at the rear end of the swing main shaft 505, the length of the swing rod 506 covers the range of the L-shaped guide groove 502, a straight slot 507 is arranged on the swing rod 506, the movable shaft 503 is inserted in the straight slot 507, and the transfer base 4 is fixedly connected to the front end of the movable shaft 503;

[0059] When the transfer base 4 is lifted upward, the first welding part and the second welding part are pressed together with the upper fixed limiting plate 10;

[0060] The L-shaped guide groove 502 of the present invention comprises a vertical groove 5021 and a transverse groove 5022 arranged at the upper right of the vertical groove 5021 , and an oblique groove 5023 is connected between the vertical groove 5021 and the transverse groove 5022 .

[0061] The balance maintaining mechanism 6 of the present invention comprises a vertical lifting guide rod 601 arranged on the equipment base 102, a vertical lifting member 602 is movably mounted on the vertical lifting guide rod 601, a horizontal straight groove 603 is arranged on the vertical lifting member 602, a rectangular parallel holding member 604 is arranged at the rear end of the movable shaft body 503, and the rectangular parallel holding member 604 is movably arranged in the horizontal straight groove 603 so that one side thereof is closely attached to the inner wall surface of the horizontal straight groove 603 and moves;

[0062] The vertical lifting member 602 and the vertical lifting guide rod 601 maintain the horizontality in the vertical direction, while the transverse straight groove 603 and the rectangular parallel retaining member 604 can maintain the horizontality in the transverse direction. During the swinging process of the swing rod 506, the straight groove mouth 507 will be driven to swing, driving the movable shaft 503 to move along the path of the L-shaped guide groove 502, and the balance during the movement is maintained by the balance maintaining mechanism 6.

[0063] The rotary welding head assembly 7 described in the present invention includes an annular groove 701 arranged on the outside of the through hole 304, and the annular groove 701 is arranged on the lower surface of the intermediate transfer plate 303. An annular rotating seat 702 is rotatably arranged in the annular groove 701, and a plurality of laser welding heads 703 arranged toward the weld position are arranged on the annular rotating seat 702. A control motor assembly 704 for driving the annular rotating seat 702 to reciprocate is arranged on the intermediate transfer plate 303, and transmission is performed between the control motor assembly 704 and the annular rotating seat 702 via a transmission gear assembly.

[0064] The one-way unloading assembly 9 of the present invention comprises a central rotating shaft 901 arranged between the unloading channel 8 and the vertical groove 5021, a transfer swing plate 903 is arranged on the central rotating shaft 901, a reset coil spring assembly 902 is arranged on the main body plate 501, the reset coil spring assembly 902 is connected to the central rotating shaft 901, the reset coil spring assembly 902 can keep the transfer swing plate 903 in a downward flipping state, a limit block 904 for limiting the downward flipping angle of the transfer swing plate 903 is arranged on the main body plate 501, and a staggered slot 905 is arranged on the transfer base 4, and the transfer swing plate 903 can pass through the staggered slot 905;

[0065] When the second welding piece is placed on the transfer base 4 and moves upward, it will push the transfer swing plate 903 to flip upward and pass over the transfer swing plate 903;

[0066] When the transfer base 4 is placed with the second welded part and the first welded part and moves downward, the welded workpiece cannot pass over the transfer swing plate 903, so the welded workpiece falls on the transfer swing plate 903 and is unloaded into the unloading channel 8.

[0067] The transfer base 4 of the present invention includes a workpiece support plate 401, and a workpiece positioning and mounting groove 402 is provided on the workpiece support plate 401;

[0068] The horizontal synchronization holding assembly 11 of the present invention comprises a synchronization vertical shaft arranged on the intermediate transfer plate 303, and a synchronization vertical hole is arranged on the rectangular parallel holding member, and the synchronization vertical shaft is inserted into the synchronization vertical hole;

[0069] Since the vertical distance between the intermediate transfer plate 303 and the rectangular parallel retaining member 604 will change continuously, at this time, the synchronous vertical shaft 111 and the synchronous vertical hole 112 cooperate to maintain the same horizontal position.

[0070] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic loading and unloading structure used in a laser welding machine, comprising a processing device (1), characterized in that: The processing device (1) is provided with a stacking device (2) for stacking first welding parts, the processing device (1) is provided with a workpiece transfer device (3) capable of moving the lowest first welding part to one side, the processing device (1) is provided with a transfer base (4) for transferring the second welding part, the processing device (1) is provided with a guide track (5) and a balance maintaining mechanism (6), the processing device (1) is provided with an upper fixed limit plate (10) capable of cooperating with the transfer base (4) to fix the first welding part and the second welding part, the workpiece transfer device (3) is provided with a rotating welding head assembly (7) for performing surrounding welding on the connection between the first welding part and the second welding part, the processing device (1) is provided with a discharge channel (8), a one-way discharge assembly (9) is provided between the discharge channel (8) and the guide track (5), and a lateral synchronization maintaining assembly (11) for maintaining the same lateral position is provided between the workpiece transfer device (3) and the transfer base (4); The guide rail (5) is used to drive the transfer base (4) to move along a reverse "L"-shaped path, and to enable the transfer base (4) to move from the bottom through the stacking device (2) and then to one side; The balance maintaining mechanism (6) is used to maintain the balance of the transfer base (4) during the movement process; The one-way unloading assembly (9) can drive the welded workpiece to be transferred to the unloading channel (8) when the transfer base (4) descends.

2. The automatic loading and unloading structure used in a laser welding machine according to claim 1 is characterized in that: The processing device (1) comprises a housing (101), and a device base (102) is arranged inside the housing (101).

3. The automatic loading and unloading structure used in a laser welding machine according to claim 2 is characterized in that: The stacking device (2) comprises a storage tube (201) arranged on the housing (101), wherein a plurality of stacked tubular components are stored in the storage tube (201). The workpiece transfer device (3) comprises a fixed support (301) arranged on the equipment base (102), a transverse track (302) is arranged on the fixed support (301), an intermediate transfer plate (303) is arranged on the transverse track (302), a through hole (304) is arranged on the intermediate transfer plate (303), and a downward elastic positioning plate (305) is arranged below the intermediate transfer plate (303); The through hole (304) can be aligned with the lower end of the storage tube (201); The downward elastic positioning plate (305) is used to limit the descending distance of the first welding part.

4. The automatic loading and unloading structure used in a laser welding machine according to claim 3 is characterized in that: The downward elastic positioning plate (305) comprises a plate movable seat (3051) arranged on the fixed bracket (301), a movable limiting plate (3052) is movably arranged in the plate movable seat (3051), and an elastic structure (3053) for pressing the movable limiting plate (3052) outward is arranged in the plate movable seat (3051).

5. The automatic loading and unloading structure used in a laser welding machine according to claim 4 is characterized in that: The guide track (5) comprises a main body plate (501) arranged on the equipment base (102), the main body plate (501) is provided with an L-shaped guide groove (502), a movable shaft (503) is movably arranged in the L-shaped guide groove (502), a motor drive assembly (504) and a swing main shaft (505) are arranged on the main body plate (501), the motor drive assembly (504) and the swing main shaft (505) are rotated by a gear transmission assembly, a swing rod (506) is arranged at the rear end of the swing main shaft (505), the length of the swing rod (506) covers the range of the L-shaped guide groove (502), a straight slot (507) is arranged on the swing rod (506), the movable shaft (503) is inserted in the straight slot (507), and the transfer base (4) and the front end of the movable shaft (503) are fixedly connected; When the transfer base (4) is lifted upward, the first welding part and the second welding part are pressed tightly by cooperating with the upper fixed limiting plate (10).

6. The automatic loading and unloading structure used in a laser welding machine according to claim 5 is characterized in that: The L-shaped guide groove (502) comprises a vertical groove (5021) and a transverse groove (5022) arranged at the upper right of the vertical groove (5021), and an oblique groove (5023) is connected between the vertical groove (5021) and the transverse groove (5022).

7. The automatic loading and unloading structure used in a laser welding machine according to claim 6 is characterized in that: The balance maintaining mechanism (6) comprises a vertical lifting guide rod (601) arranged on the equipment base (102), a vertical lifting member (602) is movably mounted on the vertical lifting guide rod (601), a transverse straight groove (603) is arranged on the vertical lifting member (602), a rectangular parallel maintaining member (604) is arranged at the rear end of the movable shaft (503), and the rectangular parallel maintaining member (604) is movably arranged in the transverse straight groove (603) and one of its sides is moved in close contact with the inner wall surface of the transverse straight groove (603).

8. The automatic loading and unloading structure used in a laser welding machine according to claim 7 is characterized in that: The rotary welding head assembly (7) comprises an annular groove (701) arranged on the outside of the through hole (304); the annular groove (701) is arranged on the lower surface of the intermediate transfer plate (303); an annular rotating seat (702) is rotatably arranged in the annular groove (701); a plurality of laser welding heads (703) arranged toward the welding seam position are arranged on the annular rotating seat (702); a control motor assembly (704) for driving the annular rotating seat (702) to reciprocate is arranged on the intermediate transfer plate (303); and transmission is performed between the control motor assembly (704) and the annular rotating seat (702) via a transmission gear assembly.

9. The automatic loading and unloading structure used in a laser welding machine according to claim 8, characterized in that: The one-way unloading assembly (9) comprises a central rotating shaft (901) arranged between the unloading channel (8) and the vertical groove (5021), a transfer swing plate (903) being arranged on the central rotating shaft (901), a reset coil spring assembly (902) being arranged on the main body plate (501), the reset coil spring assembly (902) being connected to the central rotating shaft (901), the reset coil spring assembly (902) being able to keep the transfer swing plate (903) in a downwardly flipped state, a limit block (904) being arranged on the main body plate (501) for limiting the downward flipping angle of the transfer swing plate (903), and a dislocation slot (905) being arranged on the transfer base (4), the transfer swing plate (903) being able to pass through the dislocation slot (905); When the second welding piece is placed on the transfer base (4) and moves upward, it pushes the transfer swing plate (903) to flip upward and pass over the transfer swing plate (903); When the transfer base (4) is placed with a second welded part and a first welded part and moves downward, the welded workpiece cannot pass over the transfer swing plate (903), so the welded workpiece falls on the transfer swing plate (903) and is unloaded to the unloading channel (8); the transfer base (4) includes a workpiece support plate (401), and a workpiece positioning installation groove (402) is provided on the workpiece support plate (401).

10. The automatic loading and unloading structure used in a laser welding machine according to claim 9, characterized in that: The transverse synchronous holding component (11) comprises a synchronous vertical shaft (111) arranged on the intermediate transfer plate (303); a synchronous vertical hole (112) is arranged on the rectangular parallel holding member (604); and the synchronous vertical shaft (111) is inserted into the synchronous vertical hole (112).

Images