A die laser welding device and a welding method

Abstract

The present invention discloses a die laser welding device and a welding method, which relates to the field of welding equipment. It includes a welding host, a water chiller and an operating table connected to the welding host. A laser emitting head is installed on the welding host, and a microscope is installed on the laser emitting head. The laser emitting head is located above the operating table. A return water pipe and a water inlet pipe are connected between the welding host and the water chiller. An emergency stop switch is installed on one side of the water chiller, and the welding host and the water chiller are both electrically connected to the emergency stop switch. It should be noted that in the embodiment of the present invention, when the water chiller has problems such as water outlet blockage or decreased refrigeration effect, the two closing plates automatically open, so that the two switching boxes deliver the water in the auxiliary water tank to the switching pipe and enter the water inlet pipe through the switching pipe to help the welding host for auxiliary cooling, avoiding the problem of overheating of the welding host and ensuring the safe use of the welding host.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and particularly to a die laser welding device and a welding method. Background Art

[0002] Die laser welding is a high-precision welding method that uses a high-energy laser beam to locally heat a small area of a die, melting and bonding the materials. This method is also known as a die laser repair machine, which effectively makes up for the deficiencies of traditional welding techniques when repairing and welding fine surfaces. Specifically, the working principle of die laser welding is to use the high thermal energy of the laser and the concentrated fixed-point welding technology to precisely and quickly weld and repair the die. The laser beam is focused within a very small area or at the joint of the workpiece through an optical system, forming a heat source area with highly concentrated energy at the welded part, so that the welded object melts and forms firm solder joints and weld seams.

[0003] It should be noted that during the welding process of the die, since the repaired positions are basically relatively small, a microscope is required for auxiliary observation during welding, and a water chiller is needed to assist in cooling the welding main body to ensure the temperature of the welding main body. However, in actual use, generally a machine needs to be used for a long time. Therefore, during long-term use, the equipment is bound to malfunction, resulting in a decrease in the refrigeration effect of the water chiller or blockage of the water chiller, causing the water temperature coming out of the water chiller to be relatively high, unable to achieve the cooling effect or even causing the temperature of the welding main body to rise. In addition, when the water chiller is blocked, the water in the welding main body continuously decreases, also causing the temperature in the welding main body to continuously rise, and then causing the welding main body to be damaged due to high temperature. Summary of the Invention

[0004] The purpose of the present invention is to provide a die laser welding device and a welding method to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A die laser welding device includes a welding main body, a water chiller and an operation console connected to the welding main body. A laser emitter is installed on the welding main body, and a microscope is installed on the laser emitter. The laser emitter is located above the operation console. A return water pipe and a water inlet pipe are connected between the welding main body and the water chiller. An emergency stop switch is installed on one side of the water chiller, and both the welding main body and the water chiller are electrically connected to the emergency stop switch;

[0007] It further includes an auxiliary water tank which is installed on one side of the water chiller. An auxiliary switching mechanism is installed on the auxiliary water tank, and the water inlet pipe is connected to the auxiliary switching mechanism. The auxiliary switching mechanism is used to convey the cold water in the auxiliary water tank into the water inlet pipe. The auxiliary switching mechanism includes a closed box which is installed on the water inlet pipe. Two switching boxes are installed on the bottom side of the auxiliary water tank. Two switching pipes are connected to the two switching boxes respectively, and both of the two switching pipes are connected to the water inlet pipe. A closing plate for closing the switching box is rotatably installed in each of the two switching boxes. An expansion push plate is movably installed in the closed box. A synchronization rod is installed on the top side of the expansion push plate, and a trigger frame is installed at the top end of the synchronization rod. A lifting frame is installed on the trigger frame, and the lifting frame is movably installed on one of the switching boxes. The lifting frame is used to block the closing plate.

[0008] It also includes a water shortage switching mechanism which is installed on the water inlet pipe. The water shortage switching mechanism is used to convey the cold water in the auxiliary water tank into the water inlet pipe. The water shortage switching mechanism includes an amplifying pipe which is connected to the water inlet pipe. A resilient frame is installed on the bottom side of the amplifying pipe, and the resilient frame is movably installed on one side of the closed box. The resilient frame is used to block the closing plate in the other corresponding switching box, and the resilient frame is connected to the lifting frame.

[0009] Further, in a preferred embodiment of the present invention, the auxiliary switching mechanism further includes two water passing frames which are respectively installed in the two switching boxes, and the two closing plates are respectively used to close the two water passing frames.

[0010] Mounting seats are installed on the inner walls of the two opposite sides of the two switching boxes respectively. Torsion grooves are formed in the two mounting seats. A rotating shaft is rotatably installed in the two torsion grooves, and the two closing plates are both installed on the rotating shaft. A torsion spring is installed on the inner wall of the torsion groove, and the other end of the torsion spring is installed on the inner wall of the torsion groove.

[0011] Further, in a preferred embodiment of the present invention, a retraction spring is connected between the closed box and the trigger frame, and the retraction spring is used to pull the trigger frame back to its original position.

[0012] One side of the trigger frame is arc-shaped and is in contact with the emergency stop switch.

[0013] Further, in a preferred embodiment of the present invention, an alarm switch is installed on one side of the water chiller, and an alarm lamp is installed on the top side of the auxiliary water tank. The alarm lamp is electrically connected to the alarm switch. The upward movement of the trigger frame is used to trigger the alarm switch and the emergency stop switch.

[0014] Furthermore, in a preferred embodiment of the present invention, the water shortage switching mechanism further includes a limiting rod. A support shaft is installed on the top side of the switching box, and the limiting rod is rotatably installed on the support shaft. The limiting rod rotates to block the rebound frame.

[0015] Furthermore, in a preferred embodiment of the present invention, a rebound groove is formed on one side of the closed box. A rebound block is slidably installed in the rebound groove, and the rebound block is installed on the rebound frame;

[0016] An upward pulling spring is installed on the inner wall of the rebound groove, and the other end of the upward pulling spring is installed on the rebound block.

[0017] Furthermore, in a preferred embodiment of the present invention, an automatic protection mechanism is further included. The automatic protection mechanism is installed on the laser emitter head, and the automatic protection mechanism is used to close the laser emitter head;

[0018] The automatic protection mechanism includes a protection plate for closing the laser emitter head. An installation frame is installed on one side of the laser emitter head, a transverse movement frame is slidably installed on one side of the installation frame, and the protection plate is installed on the transverse movement frame.

[0019] Furthermore, in a preferred embodiment of the present invention, a rotating frame is rotatably installed on one side of the installation frame, and two driving shafts are installed on the rotating frame;

[0020] A driving groove is formed on the transverse movement frame. One of the driving shafts is movably installed in the driving groove, and the other driving shaft is rotatably installed on the installation frame.

[0021] Furthermore, in a preferred embodiment of the present invention, a driving gear is installed on one side of the rotating frame, a pushing tooth rack is slidably installed on one side of the installation frame, and the pushing tooth rack meshes with the driving gear;

[0022] A pushing pad is installed on the top side of the pushing tooth rack. The pushing pad is made of silica gel material. A return spring is installed on the pushing tooth rack, and the other end of the return spring is installed on the inner wall of the installation frame.

[0023] A method for laser welding of a mold is carried out according to the above-mentioned mold laser welding device, and includes the following steps:

[0024] When the water chiller fails and the refrigeration effect decreases, the water temperature in the water inlet pipe continues to rise, causing the temperature of the closed box to continue to rise. As a result, the air in the closed box expands due to heat and pushes the expansion push plate to move. The expansion push plate drives the trigger frame to move through the synchronization rod. The upward movement of the trigger frame synchronously drives the lifting frame to move. Or when the water chiller is blocked, the water in the water inlet pipe continues to decrease. Under the pulling force of the upward pulling spring, the rebound block is pulled upward. The rebound block drives the rebound frame to move upward and synchronously drives the lifting frame to move;

[0025] The trigger frame moves to squeeze the alarm switch and the emergency stop switch, causing the water chiller and the welding host to be shut down in time, and starting the alarm light for warning;

[0026] The lifting frame moves upward and disengages from the closing plate. Under the restoring force of the torsion spring, it drives the two closing plates to rotate, opens the water passing frame, enables the two switching boxes to transport the water in the auxiliary water tank to the switching pipe, and enters the water inlet pipe through the switching pipe for cooling;

[0027] When using the microscope, the user's head squeezes the pushing pad, causing the pushing pad to drive the pushing tooth frame to move. The movement of the pushing tooth frame drives the driving gear to rotate, enabling the driving gear to drive the rotating frame to rotate. The rotating frame drives the transverse moving frame to move through the driving shaft. The movement of the transverse moving frame drives the protective plate to move, exposing the laser emitting head for use. After use, the protective plate automatically closes and protects the laser emitting head.

[0028] The beneficial effects of a mold laser welding device and a welding method proposed by the present invention are:

[0029] In the present invention, through the setting of the auxiliary water tank and the auxiliary switching mechanism, when the welding host performs welding through the laser emitting head, if the water chiller fails and the refrigeration effect decreases, the water temperature in the water inlet pipe continues to rise, causing the temperature of the closed box to continue to rise. As a result, the air in the closed box expands due to heat and pushes the expansion push plate to move. The expansion push plate drives the trigger frame to move through the synchronization rod and drives the retraction spring to be stretched under force. The trigger frame moves to squeeze the alarm switch and the emergency stop switch, causing the water chiller and the welding host to be shut down in time. At the same time, the alarm light is started for warning. And when the trigger frame moves upward and synchronously drives the lifting frame to move, the lifting frame moves upward and disengages from the closing plate. At this time, under the restoring force of the torsion spring, it helps the return rotation shaft to rotate and drives the two closing plates to rotate. Furthermore, the two switching boxes transport the water in the auxiliary water tank to the switching pipe and enter the water inlet pipe through the switching pipe, helping the welding host to perform auxiliary cooling and avoiding the problem of overheating of the welding host.

[0030] Furthermore, in the present invention, through the setting of the water shortage switching mechanism, during the use of the water cooler, if a blockage occurs, causing the water in the water inlet pipe to continuously decrease, at this time, under the pulling force of the upper pulling spring, the rebound block is pulled upward, and then the rebound block drives the rebound frame to move. The upward movement of the rebound frame causes the rebound frame to disengage from the closing plate. Then, under the resilience of the torsion spring, the return shaft drives the two closing plates to rotate, no longer closing the water passing frame, enabling the water in the auxiliary water tank to enter the water inlet pipe, which can also help cool the welding host and avoid the problem of overheating of the welding host.

[0031] Furthermore, in the present invention, through the setting of the automatic protection mechanism, when using the microscope, the user's head squeezes the pushing pad, causing the pushing pad to drive the pushing tooth rack to move. The movement of the pushing tooth rack drives the driving gear to rotate, causing the driving gear to drive the rotating frame to rotate. The rotating frame drives the transverse moving frame to move through the driving shaft, and the movement of the transverse moving frame drives the protection plate to move, enabling the laser emitting head to be exposed for use; after use, the laser emitting head can be automatically closed by the protection plate, avoiding accidental injury to the staff when the laser emitting head is in use or the problem of damage to the laser emitting head due to collision, ensuring the safe use of the laser emitting head. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a three-dimensional structural schematic diagram of a die laser welding device provided by an embodiment of the present invention;

[0033] Figure 2 is a rear structural schematic diagram of a die laser welding device provided by an embodiment of the present invention;

[0034] Figure 3 is a structural schematic diagram of the connection between the closed box and the magnifying tube and other structures of a die laser welding device provided by an embodiment of the present invention;

[0035] Figure 4 is a partial structural schematic diagram of the connection between the closed box and the switching tube and other structures of a die laser welding device provided by an embodiment of the present invention;

[0036] Figure 5 is a structural schematic diagram of the connection between the switching box and the lifting frame and other structures of a die laser welding device provided by an embodiment of the present invention;

[0037] Figure 6 is a die laser welding device provided by an embodiment of the present invention Figure 3 structural schematic diagram of part A therein;

[0038] Figure 7 is a partial sectional structural schematic diagram of the connection between the closed box and the switching box and other structures of a die laser welding device provided by an embodiment of the present invention;

[0039] Figure 8 A partial cross-sectional structural view showing the connection between the closing plate and the mounting base and other structures of a die laser welding device provided by an embodiment of the present invention;

[0040] Figure 9 A structural view showing the connection between the protective plate and the mounting frame and other structures of a die laser welding device provided by an embodiment of the present invention;

[0041] Figure 10 A structural view showing the connection between the transverse movement frame and the driving shaft and other structures of a die laser welding device provided by an embodiment of the present invention.

[0042] In the figure: 1 - welding main machine; 2 - laser emitting head; 3 - microscope; 4 - operation table; 5 - water chiller; 6 - auxiliary water tank; 7 - auxiliary switching mechanism; 701 - closed box; 702 - switching box; 703 - switching pipe; 704 - expansion push plate; 705 - synchronous rod; 706 - trigger frame; 707 - retraction spring; 708 - water passing frame; 709 - closing plate; 710 - mounting base; 711 - torsion groove; 712 - rotating shaft; 713 - torsion spring; 714 - lifting frame; 715 - alarm lamp; 716 - alarm switch; 8 - water shortage switching mechanism; 801 - magnifying tube; 802 - rebounding frame; 803 - rebounding groove; 804 - rebounding block; 805 - upward pulling spring; 806 - limiting rod; 807 - support shaft; 9 - automatic protection mechanism; 901 - protective plate; 902 - mounting frame; 903 - transverse movement frame; 904 - rotating frame; 905 - driving gear; 906 - driving groove; 907 - driving shaft; 908 - pushing tooth frame; 909 - pushing pad; 910 - reset spring; 10 - return water pipe; 11 - water inlet pipe; 12 - emergency stop switch. Detailed implementation manners

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] In addition, in the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0047] In addition, terms such as "horizontal", "vertical", "perpendicular", etc. do not mean that the component is required to be absolutely vertical, but can be slightly inclined. For example, "vertical" only means that its direction is more vertical relative to "horizontal", and does not mean that the structure must be completely vertical, but can be slightly inclined.

[0048] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "install", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Please refer to the accompanying drawings of the specification Figures 1-10 , a die laser welding device provided by an embodiment of the present invention includes a welding host 1, a water chiller 5 and an operation table 4 connected to the welding host 1. A laser emitting head 2 is installed on the welding host 1, a microscope 3 is installed on the laser emitting head 2, the laser emitting head 2 is located above the operation table 4, a return water pipe 10 and a water inlet pipe 11 are connected between the welding host 1 and the water chiller 5, an emergency stop switch 12 is installed on one side of the water chiller 5, and both the welding host 1 and the water chiller 5 are electrically connected to the emergency stop switch 12.

[0050] Further, please refer to the accompanying drawings of the specification Figures 3-8, a mold laser welding device provided by an embodiment of the present invention further includes an auxiliary water tank 6. The auxiliary water tank 6 is installed on one side of the water cooler 5. An auxiliary switching mechanism 7 is installed on the auxiliary water tank 6. The water inlet pipe 11 is connected to the auxiliary switching mechanism 7. The auxiliary switching mechanism 7 is used to convey the cold water in the auxiliary water tank 6 into the water inlet pipe 11. The auxiliary switching mechanism 7 includes a closed box 701 installed on the water inlet pipe 11. Two switching boxes 702 are installed on the bottom side of the auxiliary water tank 6. Two switching pipes 703 are connected to the two switching boxes 702 respectively. Both of the two switching pipes 703 are connected to the water inlet pipe 11. A closing plate 709 for closing the switching box 702 is rotatably installed in each of the two switching boxes 702. An expansion push plate 704 is movably installed in the closed box 701. A synchronous rod 705 is installed on the top side of the expansion push plate 704. A trigger frame 706 is installed at the top end of the synchronous rod 705. A lifting frame 714 is installed on the trigger frame 706. The lifting frame 714 is movably installed on one of the switching boxes 702. The lifting frame 714 is used to block the closing plate 709.

[0051] It should be noted that in the embodiment of the present invention, when the welding host 1 is welding, if the water cooler 5 fails and the refrigeration effect decreases, at this time, the water outlet temperature of the water cooler 5 continuously rises, so that the temperature in the closed box 701 continuously rises. Then, the air in the closed box 701 expands due to heat and pushes the expansion push plate 704 to move. The expansion push plate 704 drives the trigger frame 706 to move through the synchronous rod 705. The trigger frame 706 moves to squeeze the alarm switch 716 and the emergency stop switch 12, so that the water cooler 5 and the welding host 1 are timely shut down. And when the trigger frame 706 moves upward, it synchronously drives the lifting frame 714 to move. The lifting frame 714 moves upward and disengages from the closing plate 709, so that the two switching boxes 702 convey the water in the auxiliary water tank 6 into the switching pipes 703, and enter the water inlet pipe 11 through the switching pipes 703, to help the welding host 1 for auxiliary cooling and avoid the problem that the welding host 1 overheats.

[0052] Further specifically, in the embodiment of the present invention, a water shortage switching mechanism 8 is further included. The water shortage switching mechanism 8 is installed on the water inlet pipe 11. The water shortage switching mechanism 8 is used to convey the cold water in the auxiliary water tank 6 into the water inlet pipe 11. The water shortage switching mechanism 8 includes an amplifying pipe 801 connected to the water inlet pipe 11. A spring-back frame 802 is installed on the bottom side of the amplifying pipe 801. The spring-back frame 802 is movably installed on one side of the closed box 701. The spring-back frame 802 is used to block the closing plate 709 in the other corresponding switching box 702. The spring-back frame 802 is connected to the lifting frame 714. It should be noted that in the embodiment of the present invention, when the water cooler 5 is blocked and the water outlet decreases, the water volume in the amplifying pipe 801 continuously decreases, so that the spring-back frame 802 moves upward, unlocking the closing plate 709, and thus achieving the purpose of auxiliary water inlet.

[0053] Please continue to refer to the appended drawings of the specification Figures 3-8 Furthermore, for the mold laser welding device provided in an embodiment of the present invention, the auxiliary switching mechanism 7 further includes two water passing frames 708, the two water passing frames 708 are respectively installed in the two switching boxes 702, and the two closing plates 709 are respectively used to close the two water passing frames 708;

[0054] In addition, mounting seats 710 are installed on the inner walls of the two sides of the two switching boxes 702 away from each other, torsion grooves 711 are formed in the two mounting seats 710, a rotating shaft 712 is rotatably installed in the two torsion grooves 711, the two closing plates 709 are both installed on the rotating shaft 712, and a torsion spring 713 is installed on the inner wall of the torsion groove 711, and the other end of the torsion spring 713 is installed on the inner wall of the torsion groove 711. It should be noted that in the embodiment of the present invention, when the temperature in the closed box 701 continues to rise, the air in the closed box 701 expands due to heat and pushes the expansion push plate 704 to move. The expansion push plate 704 drives the trigger frame 706 to move through the synchronizing rod 705, and then drives the lifting frame 714 to move. The lifting frame 714 moves upward and disengages from the closing plate 709. At this time, under the restoring force of the torsion spring 713, it helps the rotating shaft 712 to rotate, and drives the two closing plates 709 to rotate, so that the two switching boxes 702 convey the water in the auxiliary water tank 6 into the switching pipe 703, and enter the water inlet pipe 11 through the switching pipe 703 to help the welding main machine 1 for auxiliary cooling and avoid the problem of overheating of the welding main machine 1.

[0055] More specifically, in the embodiment of the present invention, a retraction spring 707 is connected between the closed box 701 and the trigger frame 706, and the retraction spring 707 is used to pull the trigger frame 706 to reset; one side of the trigger frame 706 is arc-shaped, and the trigger frame 706 is in contact with the emergency stop switch 12. It should be noted that in the embodiment of the present invention, when the air in the closed box 701 expands due to overheating in the closed box 701, the expansion push plate 704 is pushed upward, so that the expansion push plate 704 drives the trigger frame 706 to move through the synchronizing rod 705, and drives the retraction spring 707 to stretch, so that the trigger frame 706 presses the emergency stop switch 12 to achieve the purpose of automatic emergency stop.

[0056] Please continue to refer to the appended drawings of the specification Figures 3-8, More specifically, in the embodiment of the present invention, an alarm switch 716 is installed on one side of the water chiller 5, and an alarm lamp 715 is installed on the top side of the auxiliary water tank 6. The alarm lamp 715 is electrically connected to the alarm switch 716. The trigger frame 706 moves upward to trigger the alarm switch 716 and the emergency stop switch 12. It should be noted that in the embodiment of the present invention, when problems such as refrigeration failure or water shortage occur in the water chiller 5, the trigger frame 706 moves upward to trigger the alarm switch 716 and the emergency stop switch 12, causing the alarm lamp 715 to give an alarm and shutting down the welding host 1, avoiding the problem of overheating and damage of the welding host 1, and at the same time reminding the staff to handle it in time.

[0057] Further, please refer to the attached drawings of the specification Figures 5-6 , In a mold laser welding device provided by an embodiment of the present invention, the water shortage switching mechanism 8 further includes a limiting rod 806. A support shaft 807 is installed on the top side of the switching box 702, and the limiting rod 806 is rotatably installed on the support shaft 807. The limiting rod 806 rotates to block the rebound frame 802. It should be noted that in the embodiment of the present invention, when the water chiller 5 stops working, the rebound frame 802 is blocked by rotating the limiting rod 806, so that the closing plate 709 remains in a closed state.

[0058] More specifically, in the embodiment of the present invention, a rebound groove 803 is opened on one side of the closed box 701. A rebound block 804 is slidably installed in the rebound groove 803, and the rebound block 804 is installed on the rebound frame 802; in addition, a pull-up spring 805 is installed on the inner wall of the rebound groove 803, and the other end of the pull-up spring 805 is installed on the rebound block 804. It should be noted that in the embodiment of the present invention, when the rebound frame 802 moves, the rebound block 804 slides along the rebound groove 803, causing the pull-up spring 805 to be stressed. Therefore, when there is a water shortage, the pull-up spring 805 pulls back to drive the rebound frame 802 to move upward.

[0059] Further, please refer to the attached drawings of the specification Figures 9-10 , A mold laser welding device provided by an embodiment of the present invention further includes an automatic protection mechanism 9. The automatic protection mechanism 9 is installed on the laser emitting head 2, and the automatic protection mechanism 9 is used to close the laser emitting head 2; specifically, the automatic protection mechanism 9 includes a protection plate 901. The protection plate 901 is used to close the laser emitting head 2. An installation frame 902 is installed on one side of the laser emitting head 2, and a transverse movement frame 903 is slidably installed on one side of the installation frame 902. The protection plate 901 is installed on the transverse movement frame 903. It should be noted that in the embodiment of the present invention, during welding, the protection plate 901 automatically slides, so that the laser emitting head 2 is exposed for use. When welding stops, the protection plate 901 automatically resets to achieve the purpose of automatically closing and protecting the laser emitting head 2.

[0060] Please continue to refer to the attached drawings of the specification Figures 9-10, Further specifically, in the embodiment of the present invention, a rotating frame 904 is rotatably installed on one side of the mounting frame 902, and two driving shafts 907 are installed on the rotating frame 904; in addition, a driving groove 906 is formed on the transverse moving frame 903, one driving shaft 907 is movably installed in the driving groove 906, and the other driving shaft 907 is rotatably installed on the mounting frame 902. It should be noted that in the embodiment of the present invention, when the pushing tooth rack 908 is moved to drive the driving gear 905 to rotate, the driving gear 905 drives the rotating frame 904 to rotate. The rotating frame 904 rotates on the mounting frame 902 through one driving shaft 907, and at the same time, the rotation of the rotating frame 904 drives the transverse moving frame 903 to move through the other driving shaft 907, thereby achieving the purpose of driving the transverse moving frame 903 to move when the rotating frame 904 rotates.

[0061] Please refer to the attached drawings of the specification Figures 1-10 , Further specifically, in the embodiment of the present invention, a driving gear 905 is installed on one side of the rotating frame 904, and a pushing tooth rack 908 is slidably installed on one side of the mounting frame 902. The pushing tooth rack 908 is engaged with the driving gear 905;

[0062] In addition, a pushing pad 909 is installed on the top side of the pushing tooth rack 908. The pushing pad 909 is made of silicone material. A return spring 910 is installed on the pushing tooth rack 908, and the other end of the return spring 910 is installed on the inner wall of the mounting frame 902. It should be noted that in the embodiment of the present invention, during welding, the user's head presses the pushing pad 909, so that the pushing pad 909 drives the pushing tooth rack 908 to move. The pushing tooth rack 908 moves in the mounting frame 902 and drives the return spring 910 to be stressed. The movement of the pushing tooth rack 908 drives the driving gear 905 to rotate, so that the driving gear 905 drives the rotating frame 904 to rotate, and further makes the protective plate 901 move, so that the laser emitting head 2 can be exposed for use; similarly, after use, under the reaction force of the return spring 910, the protective plate 901 automatically closes the laser emitting head 2 to protect the laser emitting head 2.

[0063] In summary, the working principle of a mold laser welding device provided by the embodiment of the present invention, that is, the welding method using the mold laser welding device of the embodiment of the present invention is:

[0064] When the welding host 1 performs welding through the laser emitting head 2, the water chiller 5 transports cold water through the water inlet pipe 11 into the welding host 1 for heat dissipation. The hot water after heat dissipation returns to the water chiller 5 through the water return pipe 10 for refrigeration. The water chiller 5 is prone to failure during long-term use. When the water chiller 5 fails and the refrigeration effect decreases, the water temperature in the water inlet pipe 11 continuously rises, causing the temperature of the closed box 701 to continuously rise. As a result, the air in the closed box 701 expands due to heat and pushes the expansion push plate 704 to move. The expansion push plate 704 drives the trigger frame 706 to move through the synchronizing rod 705, and drives the retraction spring 707 to be stretched under force. The trigger frame 706 moves to squeeze the alarm switch 716 and the emergency stop switch 12, causing the water chiller 5 and the welding host 1 to be shut down in a timely manner. At the same time, the alarm lamp 715 is activated for warning. And when the trigger frame 706 moves upward, it synchronously drives the lifting frame 714 to move. The lifting frame 714 moves upward and disengages from the closing plate 709. At this time, under the restoring force of the torsion spring 713, it helps the rotary shaft 712 to rotate, and drives the two closing plates 709 to rotate. As a result, the two switching boxes 702 transport the water in the auxiliary water tank 6 into the switching pipe 703, and enter the water inlet pipe 11 through the switching pipe 703 to help the welding host 1 for auxiliary cooling, avoiding the problem of overheating of the welding host 1;

[0065] Furthermore, when the water chiller 5 is started, the water inlet pipe 11 transports the cold water in the water chiller 5 into the welding host 1, causing the magnifying pipe 801 on the water inlet pipe 11 to be filled with cold water. As a result, the spring-back frame 802 is forced to sink. At this time, the rotating limit rod 806 is rotated so that the limit rod 806 disengages from the spring-back frame 802. Therefore, during the use of the water chiller 5, if a blockage occurs and the water in the water inlet pipe 11 continuously decreases, at this time, under the pulling force of the upward pulling spring 805, the spring-back block 804 is pulled upward. The spring-back block 804 slides vertically in the spring-back groove 803. As a result, the spring-back block 804 drives the spring-back frame 802 to move. The spring-back frame 802 moves upward, causing the spring-back frame 802 to disengage from the closing plate 709. Then, under the restoring force of the torsion spring 713, the rotary shaft 712 drives the two closing plates 709 to rotate, no longer closing the water passing frame 708. Subsequently, the water in the auxiliary water tank 6 is transported into the water inlet pipe 11, which can also help the welding host 1 for auxiliary cooling, avoiding the problem of overheating of the welding host 1;

[0066] Furthermore, when using the microscope 3, the user's head presses against the push pad 909, causing the push pad 909 to drive the push rack 908 to move. The push rack 908 moves within the mounting frame 902, driving the return spring 910 to be stressed. The movement of the push rack 908 drives the drive gear 905 to rotate, causing the drive gear 905 to drive the rotating frame 904 to rotate. The rotating frame 904 drives the transverse movement frame 903 to move through the drive shaft 907. The movement of the transverse movement frame 903 drives the protective plate 901 to move, allowing the laser emitting head 2 to be exposed for use. After use, the laser emitting head 2 can be automatically enclosed by the protective plate 901, preventing accidental injury to the staff when the laser emitting head 2 is not in use or damage caused by collision to the laser emitting head 2, ensuring the safe use of the laser emitting head 2.

[0067] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A mold laser welding device, characterized in that: It includes a welding host, a water cooler and an operating table connected to the welding host, a laser transmitter head installed on the welding host, a microscope installed on the laser transmitter head, the laser transmitter head is located above the operating table, a return pipe and a water inlet pipe are connected between the welding host and the water cooler, an emergency stop switch is installed on one side of the water cooler, and the welding host and the water cooler are both electrically connected to the emergency stop switch; It also includes an auxiliary water tank, the auxiliary water tank is installed on one side of the water cooler, an auxiliary switching mechanism is installed on the auxiliary water tank, the water inlet pipe is connected to the auxiliary switching mechanism, and the auxiliary switching mechanism is used to transport the cold water in the auxiliary water tank to the water inlet pipe; the auxiliary switching mechanism includes a closing box, the closing box is installed on the water inlet pipe, two switching boxes are installed on the bottom side of the auxiliary water tank, the two switching boxes are connected to a switching pipe, the two switching pipes are connected to the water inlet pipe, and closing plates for closing the switching boxes are rotatably installed in the two switching boxes, an expansion push plate is movably installed in the closing box, a synchronization rod is installed on the top side of the expansion push plate, a trigger frame is installed on the top of the synchronization rod, a lifting frame is installed on the trigger frame, the lifting frame is movably installed on one of the switching boxes, and the lifting frame is used to block the closing plate; It also includes a water shortage switching mechanism, which is installed on the water inlet pipe and is used to transport the cold water in the auxiliary water tank to the water inlet pipe; the water shortage switching mechanism includes an amplifying tube, which is connected to the water inlet pipe, and a rebound frame is installed on the bottom side of the amplifying tube, which is movably installed on one side of the closed box, and is used to block the corresponding closed plate in another switching box, and the rebound frame is connected to the lifting frame; The auxiliary switching mechanism further comprises two water-passing racks, which are respectively installed in the two switching boxes, and the two closing plates are respectively used to close the two water-passing racks; A mounting seat is installed on the inner wall of the two switching boxes on the side away from each other, and a torsion groove is opened on the two mounting seats. A rotating shaft is rotatably installed in the two torsion grooves, and the two closing plates are installed on the rotating shaft. A torsion spring is installed on the inner wall of the torsion groove, and the other end of the torsion spring is installed on the inner wall of the torsion groove; An alarm switch is installed on one side of the water cooler, an alarm light is installed on the top side of the auxiliary water tank, the alarm light is electrically connected to the alarm switch, and the trigger frame moves upward to trigger the alarm switch and the emergency stop switch; It also includes an automatic protection mechanism, which is installed on the laser emitting head and is used to close the laser emitting head; The automatic protection mechanism comprises a protection plate, which is used to close the laser emitting head. A mounting frame is installed on one side of the laser emitting head, a transverse frame is slidably installed on one side of the mounting frame, and the protection plate is installed on the transverse frame.

2. A mold laser welding device according to claim 1, characterized in that: A retraction spring is connected between the closed box and the trigger frame, and the retraction spring is used to pull the trigger frame to reset; One side of the trigger frame is arranged in an arc shape, and the trigger frame is in contact with the emergency stop switch.

3. A mold laser welding device according to claim 1, characterized in that: The water shortage switching mechanism also includes a limit rod. A support shaft is installed on the top side of the switching box. The limit rod is rotatably installed on the support shaft. The limit rod is rotated to block the rebound frame.

4. A mold laser welding device according to claim 3, characterized in that: A rebound groove is provided on one side of the closed box, a rebound block is slidably installed in the rebound groove, and the rebound block is installed on the rebound frame; A pull-up spring is installed on the inner wall of the rebound groove, and the other end of the pull-up spring is installed on the rebound block.

5. A mold laser welding device according to claim 1, characterized in that: A rotating frame is rotatably mounted on one side of the mounting frame, and two driving shafts are mounted on the rotating frame; A driving groove is provided on the transverse moving frame, one driving shaft is movably installed in the driving groove, and the other driving shaft is rotatably installed on the mounting frame.

6. A mold laser welding device according to claim 5, characterized in that: A driving gear is installed on one side of the rotating frame, and a pushing gear rack is slidably installed on one side of the mounting frame, and the pushing gear rack is meshed with the driving gear; A push pad is installed on the top side of the pushing gear frame, and the push pad is made of silicone material. A return spring is installed on the pushing gear frame, and the other end of the return spring is installed on the inner wall of the mounting frame.

7. A mold laser welding method, which is performed according to the mold laser welding device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. When the water cooler fails and the cooling effect decreases, the water temperature in the water inlet pipe continues to rise, causing the temperature of the closed box to continue to rise, and then the air in the closed box expands due to the heat and pushes the expansion push plate to move. The expansion push plate drives the trigger frame to move through the synchronization rod, and the upward movement of the trigger frame drives the lifting frame to move synchronously, or the water cooler is blocked, causing the water in the water inlet pipe to continue to decrease. Under the pulling force of the upward spring, the rebound block is pulled upward, and the rebound block drives the rebound frame to move upward and drives the lifting frame to move synchronously; S2, the trigger frame moves the squeeze alarm switch and the emergency stop switch, so that the water cooler and the welding host are shut down in time, and the alarm light is turned on for warning; S3, the lifting frame moves up and away from the closing plate, and under the resilience of the torsion spring, the two closing plates are driven to rotate, and the water-passing frame is opened, so that the two switching boxes transfer the water in the auxiliary water tank to the switching pipe, and then enter the water inlet pipe through the switching pipe for cooling; S4. When using a microscope, the user's head presses the push pad, so that the push pad drives the push gear frame to move, and the movement of the push gear frame drives the driving gear to rotate, so that the driving gear drives the rotating frame to rotate, and the rotating frame drives the transverse frame to move through the driving shaft, and the movement of the transverse frame drives the protective plate to move, so that the laser transmitter head is exposed for use. After use, the protective plate automatically closes and protects the laser transmitter head.

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