A fully automatic double-station high-efficiency laser welding machine

Abstract

The present invention relates to the field of laser welding, and discloses a fully automatic double-station high-efficiency laser welding machine, comprising a laser welding device and a protective cover sleeved on the outside of the laser welding device, a monitoring and control terminal is arranged on the outside of the protective cover, and a monitoring system is arranged on the inside of the protective cover. Through communication technology, an operator can realize the control and monitoring of the laser welding mechanism inside the protective cover from the outside of the protective cover, so as to avoid the operator from being directly exposed to ultraviolet rays and damaging the skin. In addition, the present application has multiple workbenches, and each workbench can orderly transport the products to be welded to the welding point for welding processing, so as to realize double-station processing and realize more efficient and safer laser welding operation. In addition, one of the cores of the present application is the heat dissipation of the galvanometer component, which can greatly reduce the reflection effect on the laser beam while ensuring the heat dissipation.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, and in particular to a fully automatic double-station high-efficiency laser welding machine. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. It is one of the common welding methods. Galvanometer scanning laser welding technology is one of the laser welding technologies. It uses a galvanometer scanning method with high welding efficiency, high precision, and good beam mode. It is suitable for laser precision spot welding of various parts. However, due to the use of high-frequency welding, the mirror body needs to withstand higher light energy and heat energy. Therefore, the galvanometer needs to be heat-dissipated to reduce the impact of the thermal lens effect.

[0003] Based on the heat dissipation of the galvanometer, a Chinese utility model patent with authorization announcement number CN221019156U was found after searching, which discloses a laser welding device and a laser welding equipment, including a wind knife assembly of a first wind knife and a second wind knife. The wind knife assembly can effectively prevent the possibility of welding slag generated by welding from splashing onto the protective lens of the galvanometer assembly, and can also blow away the dust attached to the protective lens, further improving the cleanliness of the protective lens, thereby reducing the possibility of poor welding or cold welding during welding, thereby improving the welding quality and welding reliability, and at the same time being able to dissipate the heat of the galvanometer. However, it still has some shortcomings: according to its records, the gas flowing into the internal cavity of the first annular portion and the second annular portion passes through a plurality of first air outlet ducts and a plurality of second The air outlet duct discharges at a high speed to form a stable wind curtain. That is to say, the outlets of the first air knife and the second air knife are in the shape of a circular ring. The first air knife is used to block the splashing of welding slag, and the second air knife is used to blow away the dust and impurities on the protective lens, and dissipate the heat of the protective lens. However, the outlet is in the shape of a circular ring, so although the blown wind can clean the protective lens, it will collide in the middle position of the protective lens to form irregular and disordered turbulence. Since the laser beam needs to be reflected by the galvanometer, the laser beam needs to pass through this irregular and disordered turbulence, which will undoubtedly affect the stability of the laser beam and thus affect the subsequent welding process, which needs to be improved. In addition, it can only achieve heat dissipation on the front side of the galvanometer, and the back side of the galvanometer cannot be cooled, which needs to be improved.

[0004] Based on the above, the present invention proposes a fully automatic double-station high-efficiency laser welding machine. Summary of the invention

[0005] In order to solve the problems mentioned in the above background, the present invention provides a fully automatic double-station high-efficiency laser welding machine.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0007] A fully automatic double-station high-efficiency laser welding machine, comprising a protective cover and a laser welding mechanism arranged in the protective cover, the protective cover is provided with an inlet and an outlet on both sides along the length direction, and each inlet and an outlet are matched and installed with a gate, and the inlet and outlet can be opened or closed by the gate, and at least two workbenches are arranged in an array along the length direction in the protective cover, and the workbenches can be displaced along the length direction of the protective cover;

[0008] The laser welding mechanism includes a laser emitting unit. The outer shape of the laser emitting unit is set to be cylindrical and a rotating bracket is provided on the outside. The rotating bracket is equipped with a blocking assembly and a galvanometer assembly located on both sides of the laser emitting unit respectively. The blocking assembly is used to prevent dust and welding slag generated during welding from approaching the galvanometer assembly. The galvanometer assembly is used to cooperate with the laser emitting unit to realize laser welding processing of the workpiece. At the same time, a heat dissipation structure is arranged inside the galvanometer assembly, which can perform air cooling on the front side and liquid cooling on the back side, and the air cooling will form a unidirectional air film on the front side of the galvanometer assembly.

[0009] Furthermore, the laser welding mechanism includes a horizontal bracket and a linear module 1 for driving the horizontal bracket to move in a vertical direction, a movable bracket is slidably mounted on the horizontal bracket along the width direction of the protective cover, the movable bracket is driven to move by a linear module 2 arranged on the horizontal bracket, and the laser emitting unit is mounted on the movable bracket;

[0010] A connecting bracket and a linear module three for driving the connecting bracket to move in a vertical direction are installed on the movable bracket. A connecting ring is installed on the connecting bracket through a bearing. The connecting ring is coaxially sleeved on the outside of the laser emitting unit. A motor one for driving the connecting ring to rotate is arranged on the connecting bracket. The connecting ring is connected to the rotating bracket.

[0011] Furthermore, the blocking assembly includes a threaded shaft arranged vertically and in the shape of a hollow shaft, and the threaded shaft can perform the following actions: the threaded shaft moves only along the axis direction; the threaded shaft rotates only around the axis; the threaded shaft rotates around the axis and moves along the axis direction;

[0012] A base is installed at the bottom of the threaded shaft, a connecting seat is hingedly installed on the base, and a hinge shaft formed at the hinge is dynamically connected to the motor arranged on the base, an outer surface of the connecting seat is extended with an outer blowing nozzle in the shape of a hollow shaft, an inner core tube in the shape of a hollow shaft is coaxially installed in the outer blowing nozzle through a bracket body, one end of the outer blowing nozzle connected to the connecting seat is also connected to an outer hose, the end of the outer hose is arranged in the threaded shaft, a side nozzle is arranged on the outer cylindrical surface of the threaded shaft, the end of the inner core tube close to the connecting seat is connected to the inner hose, and the end of the inner hose passes through the threaded shaft.

[0013] Furthermore, two motors 2 are installed on the rotating bracket, and the power connection between the motor 2 and the threaded shaft is achieved through a power transmission member. Two power transmission members are correspondingly arranged, and the follower of each power transmission member is restricted to only rotate. A threaded connection is formed between the follower of one power transmission member and the threaded shaft, and a sliding connection is formed between the follower of the other power transmission member and the threaded shaft in the vertical direction.

[0014] Furthermore, a slide groove is provided on the outer cylindrical surface of the threaded shaft along the axis direction, and a protrusion is provided on the inner wall of the follower, and the protrusion is slidably located in the slide groove.

[0015] Furthermore, the galvanometer assembly includes an adjusting bracket installed on a rotating bracket along the radial sliding direction of the laser emitting unit and a linear module four for driving the adjusting bracket to move. Two cantilevers are installed at the bottom of the adjusting bracket. A mirror bracket is rotatably installed between the two cantilevers, and a rotating shaft formed at the rotating installation position is dynamically connected to a motor four arranged on the adjusting bracket. The axis of the rotating shaft is perpendicular to the sliding direction of the adjusting bracket and to the axis of the laser emitting unit. A galvanometer component is installed on the mirror bracket.

[0016] Furthermore, the galvanometer component includes a mirror frame fixed on a mirror bracket, the mirror frame is cylindrical and the axis of the mirror frame is perpendicular to the axis of the shaft, one end of the mirror frame is open toward the laser emitting unit and is provided with a lens, and the other end of the mirror frame is closed.

[0017] Furthermore, an inner bracket is provided inside the frame;

[0018] The galvanometer component also includes a liquid inlet pipe, the liquid outlet end of the liquid inlet pipe extends into the mirror frame and is connected to the inner bracket. The liquid inlet end of the liquid inlet pipe is used to receive water. The closed end of the mirror frame is provided with an avoidance hole for avoiding the liquid inlet pipe, and a liquid outlet pipe extends from the opening of the avoidance hole.

[0019] Furthermore, the galvanometer component also includes an outer cover sleeve coaxially located on the periphery of the lens frame, the outer cover sleeve is open at one end facing the laser emitting unit and is provided with a guide ring, the inner diameter of the guide ring is smaller than the outer diameter of the lens, the other end of the outer cover sleeve is closed and provided with a fixing hole, the fixing hole is connected to the outer wall of the liquid outlet pipe, the closed end of the outer cover sleeve is also provided with an air inlet hole and an air outlet hole, the air inlet hole is connected to the air inlet pipe at the opening, and the air outlet pipe is connected to the air outlet hole at the opening;

[0020] A partition is also arranged inside the outer cover sleeve, which divides the inner cavity of the outer cover sleeve into two chambers which are not connected to each other, one chamber is connected to the air inlet, and the other chamber is connected to the air outlet.

[0021] Furthermore, the end of the air inlet pipe is connected to a positive pressure pump, and the end of the air outlet pipe is connected to a negative pressure pump.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] One of the core aspects of the present invention is to intercept welding impurities and dissipate heat from the lens during laser welding. Specifically:

[0024] 1. The side nozzle is used to receive inert gas, such as nitrogen, etc. The inert gas can be drawn in by existing blowers or air pumps. The inert gas is blown to the welding position of the workpiece through the side nozzle, threaded shaft, external hose and external blowing nozzle in sequence. On the one hand, it provides inert protective gas for welding. On the other hand, the inert protective gas forms an air curtain around the welding position to intercept dust and impurities generated by welding and prevent them from splashing toward the galvanometer assembly.

[0025] 2. The water is drawn into the frame through the liquid inlet pipe by a water pump, and then discharged through the liquid outlet pipe, forming a stream of flowing water in the frame to perform liquid cooling on the back of the lens;

[0026] The air is drawn into the air inlet chamber through the positive pressure pump through the air inlet pipe, and then blown to the front of the lens along the gap between the guide ring and the lens. At the same time, the air on the front of the lens is drawn by the negative pressure pump and discharged through the air outlet chamber and the air outlet pipe in sequence. In this way, one blows the air outward and the other draws the air away, which can form a unidirectional air film on the front of the lens. The flow of the air film is orderly, so the irregular and disordered turbulence mentioned in the background technology will not be formed, which can minimize the impact on the laser beam, and at the same time can also achieve air cooling, heat dissipation and cleaning effects on the front of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0028] Figure 2 It is a three-dimensional schematic diagram of the laser welding mechanism;

[0029] Figure 3 A partial diagram of the laser welding mechanism Figure 1 ;

[0030] Figure 4 A partial diagram of the laser welding mechanism Figure 2 ;

[0031] Figure 5 It is a schematic diagram of a rotating bracket, a blocking assembly and a galvanometer assembly;

[0032] Figure 6 A schematic diagram of the blocking component;

[0033] Figure 7 is a cross-sectional view of a barrier assembly;

[0034] Figure 8 is a schematic diagram of a galvanometer assembly;

[0035] Fig. 9 is a schematic diagram of a galvanometer component;

[0036] Fig.10 Cross-section view of the galvanometer component Figure 1 ;

[0037] Fig.11 Cross-section view of the galvanometer component Figure 2 ;

[0038] Fig.12 Cross-section view of the galvanometer component Figure 3 .

[0039] The reference numerals in the accompanying drawings are:

[0040] 100, protective cover; 101, workbench; 102, linear module 1; 103, horizontal bracket; 104, linear module 2; 105, movable bracket; 106, linear module 3; 107, connecting bracket; 108, motor 1; 109, rotating bracket; 110, galvanometer assembly; 111, blocking assembly; 1111, motor 2; 1112, threaded shaft; 1113, base; 1114, connecting seat; 1115, motor 3; 1116 , outer blowing nozzle; 1117, inner core tube; 1118, outer hose; 1119, inner hose; 112, linear module four; 113, adjustment bracket; 114, motor four; 115, cantilever; 116, mirror frame; 117, lens; 118, inner bracket; 119, liquid inlet pipe; 120, liquid outlet pipe; 121, outer cover; 122, guide ring; 123, air inlet pipe; 124, air outlet pipe; 125, mirror bracket; 126, laser emitting unit. DETAILED DESCRIPTION

[0041] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0042] Reference Figure 1-Figure 12 A fully automatic double-station high-efficiency laser welding machine includes a protective cover 100 and a laser welding mechanism arranged in the protective cover 100.

[0043] The main body of the present invention is composed of a laser welding mechanism and a protective cover 100 sleeved on the outside of the laser welding mechanism. A monitoring and control terminal is arranged on the outside of the protective cover 100, and a monitoring system is arranged inside the protective cover 100. Through communication technology, an operator can control and monitor the laser welding mechanism inside the protective cover 100 from the outside of the protective cover 100 to prevent the operator from being directly exposed to ultraviolet rays and damaging the skin.

[0044] The protective cover 100 is provided with inlets and outlets on both sides along the length direction, and each inlet and outlet is matched with a gate, through which the inlet and outlet can be opened or closed.

[0045] At least two workbenches 101 are arranged in an array along the length direction inside the protective cover 100. The workbenches 101 can be displaced along the length direction of the protective cover 100, for example, by means of existing screw linear motion technology, which will not be elaborated herein. The workbenches 101 are used to place the workpiece to be welded. As for clamping the workpiece, existing fixture technology is adopted, which will not be elaborated herein. The advantage of setting up multiple workbenches 101 is that each workbench 101 can transport the workpiece to be welded to the welding point in sequence and in an orderly manner for welding processing, thereby realizing more efficient and safer laser welding operations. It should be noted that in the present application, the double workstation does not refer to only two workstations, each workbench 101 is a workstation, and therefore, the double workstation refers to at least two workstations.

[0046] One of the cores of the present invention lies in the laser welding mechanism disposed inside the protective cover 100 .

[0047] Reference Figure 2 The laser welding mechanism includes a horizontal bracket 103 and a linear module 102 for driving the horizontal bracket 103 to move in a vertical direction. A movable bracket 105 is slidably installed on the horizontal bracket 103 along the width direction of the protective cover 100. The movable bracket 105 is driven to move by a linear module 104 arranged on the horizontal bracket 103.

[0048] Reference Figure 3 and Figure 4 A laser emitting unit 126 is installed on the movable bracket 105, and the existing laser technology is used to emit a laser beam used for welding. It will not be described in detail. The shape of the laser emitting unit 126 is set to be cylindrical, and a rotating bracket 109 is provided on the outside.

[0049] A connecting bracket 107 and a linear module 3 106 for driving the connecting bracket 107 to move in a vertical direction are installed on the movable bracket 105. A connecting ring is installed on the connecting bracket 107 through a bearing. The connecting ring is coaxially sleeved on the outside of the laser emitting unit 126. A motor 108 for driving the connecting ring to rotate is provided on the connecting bracket 107. The connecting ring is connected to the rotating bracket 109. The rotation of the connecting ring will cause the rotating bracket 109 to rotate together, that is, the rotating bracket 109 can be driven to rotate around the axis of the laser emitting unit 126 through the motor 108.

[0050] Reference Figure 5The rotating bracket 109 is provided with a blocking component 111 and a galvanometer component 110 which are respectively located on both sides of the laser emitting unit 126, wherein the blocking component 111 is used to block dust and welding slag generated during welding from approaching the galvanometer component 110, and the galvanometer component 110 is used to cooperate with the laser emitting unit 126 to realize laser welding processing of the workpiece. At the same time, a heat dissipation structure is arranged inside the galvanometer component 110, which can effectively dissipate heat on the front and back sides thereof.

[0051] Reference Figure 6 and Figure 7 The blocking component 111 includes a threaded shaft 1112 which is arranged vertically and is in the shape of a hollow shaft, and two motors 1111 installed on the rotating bracket 109. The motor 1111 and the threaded shaft 1112 are connected to each other through a power transmission member. Two power transmission members are correspondingly provided. The follower of each power transmission member is restricted to only rotate. A threaded connection is formed between the follower of one power transmission member and the threaded shaft 1112, and a sliding connection is formed between the follower of the other power transmission member and the threaded shaft 1112. For example, a sliding groove is provided on the outer cylindrical surface of the threaded shaft 1112 along the axis direction, and a protrusion is provided on the inner wall of the follower, and the protrusion slides in the sliding groove. In this way, through the cooperation of the two motors 1111, the threaded shaft 1112 can be driven to perform the following actions: the threaded shaft 1112 only moves along the axis direction; the threaded shaft 1112 only rotates around the axis; the threaded shaft 1112 rotates around the axis and moves along the axis direction.

[0052] A base 1113 is installed at the bottom of the threaded shaft 1112, and a connecting seat 1114 is hingedly installed on the base 1113. The hinge shaft formed at the hinge is dynamically connected to the motor three 1115 arranged on the base 1113. The motor three 1115 can drive the hinge shaft to rotate and rotate with the connecting seat 1114.

[0053] An outer blowing nozzle 1116 in the shape of a hollow shaft extends from the outer surface of the connecting seat 1114 , and an inner core tube 1117 in the shape of a hollow shaft is coaxially installed in the outer blowing nozzle 1116 through a bracket body.

[0054] One end of the outer blowing nozzle 1116 connected to the connecting seat 1114 is also connected to an outer hose 1118, the end of the outer hose 1118 is arranged in the threaded shaft 1112, and the outer circumferential surface of the threaded shaft 1112 is provided with a side nozzle.

[0055] One end of the inner core tube 1117 close to the connecting seat 1114 is connected to an inner hose 1119 , and the end of the inner hose 1119 passes through the threaded shaft 1112 .

[0056] The side nozzle is used to receive inert gas, such as nitrogen, etc. The inert gas can be drawn in through existing blower or air pump technology. The inert gas is blown toward the welding position of the workpiece through the side nozzle, threaded shaft 1112, external hose 1118 and external blowing nozzle 1116 in sequence. On the one hand, an inert protective gas is provided for welding. On the other hand, an air curtain is formed around the welding position by the inert protective gas to intercept dust and impurities generated by welding and prevent them from splashing toward the galvanometer assembly 110.

[0057] The inner hose 1119 is used for placing the welding wire. Its significance lies in that laser welding is divided into two types: with welding wire and without welding wire. When there is welding wire, the end of the welding wire can pass through the inner hose 1119 and approach the weld. As for the wire feeding of the welding wire, the existing technology can be used.

[0058] In addition, the cooperation of motor three 1115 and two motors two 1111 can adjust the end position of the outer blowing nozzle 1116, so that the outer blowing nozzle 1116 can be brought close to the welding position to better exert the blocking effect.

[0059] Reference Figure 8-Figure 12 The galvanometer assembly 110 includes an adjustment bracket 113 slidably mounted on the rotating bracket 109 along the radial direction of the laser emitting unit 126 and a linear module 112 for driving the adjustment bracket 113 to move.

[0060] Two cantilevers 115 are installed at the bottom of the adjustment bracket 113, and the mirror bracket 125 is rotatably installed between the two cantilevers 115. The rotating shaft formed at the rotating installation position is dynamically connected with the motor 114 set on the adjustment bracket 113. The axis of the rotating shaft is perpendicular to the sliding direction of the adjustment bracket 113 and perpendicular to the axis of the laser emitting unit 126. The rotating shaft can be driven to rotate by the motor 114, and the mirror bracket 125 and the galvanometer component can be rotated together.

[0061] A galvanometer component is mounted on the mirror bracket 125 .

[0062] Reference Figure 10-12 The galvanometer component includes a mirror frame 116 fixed on a mirror bracket 125. The mirror frame 116 is cylindrical in shape and the axis of the mirror frame 116 is perpendicular to the axis of the rotating shaft. One end of the mirror frame 116 facing the laser emitting unit 126 is open and is provided with a lens 117. The other end of the mirror frame 116 is closed, and an inner bracket 118 is provided inside the mirror frame 116.

[0063] The galvanometer component also includes a liquid inlet pipe 119, the liquid outlet end of the liquid inlet pipe 119 extends into the lens frame 116 and is connected to the inner bracket 118. The liquid inlet end of the liquid inlet pipe 119 can be connected to the existing water pump technology. The water is drawn by the water pump through the liquid inlet pipe 119 to flow into the lens frame 116, and the back of the lens 117 is liquid-cooled.

[0064] The closed end of the mirror frame 116 is provided with an avoidance hole for avoiding the liquid inlet pipe 119, and a liquid outlet pipe 120 extends from the mouth of the avoidance hole. The water entering the mirror frame 116 will be discharged through the liquid outlet pipe 120, forming a stream of flowing water in the mirror frame 116, and the liquid cooling heat dissipation effect is better.

[0065] The galvanometer component also includes an outer cover sleeve 121 coaxially located on the periphery of the mirror frame 116. The outer cover sleeve 121 is open at one end facing the laser emitting unit 126 and is provided with a guide ring 122. The inner diameter of the guide ring 122 is smaller than the outer diameter of the lens 117. The other end of the outer cover sleeve 121 is closed and has a fixing hole connected to the outer wall of the liquid outlet pipe 120. The closed end of the outer cover sleeve 121 is also provided with an air inlet hole and an air outlet hole. The air inlet hole is connected to the air inlet pipe 123, and the air outlet hole is connected to the air outlet pipe 124.

[0066] A partition is also provided inside the outer cover sleeve 121, which divides the inner cavity of the outer cover sleeve 121 into two chambers that are not connected to each other. One chamber is connected to the air inlet hole and is named as the air inlet chamber, and the other chamber is connected to the air outlet hole and is named as the air outlet chamber.

[0067] The end of the air inlet pipe 123 is connected to a positive pressure pump, and the end of the air outlet pipe 124 is connected to a negative pressure pump. Therefore, the air is pulled by the positive pressure pump and can enter the air inlet chamber through the air inlet pipe 123, and then blow to the front of the lens 117 along the gap between the guide ring 122 and the lens 117. At the same time, the air in front of the lens 117 is pulled by the negative pressure pump and discharged in turn through the air outlet chamber and the air outlet pipe 124. In this way, one blows air outward and the other draws air away, which can form a unidirectional air film on the front of the lens 117. The flow of the air film is orderly, so it will not form the irregular and disordered turbulence mentioned in the background technology, which can minimize the impact on the laser beam, and at the same time can also play a role in air cooling and cleaning the front of the lens 117.

[0068] Working principle of the present invention:

[0069] The main body of the present invention is composed of a laser welding mechanism and a protective cover 100 sleeved on the outside of the laser welding mechanism. A monitoring and control terminal is arranged on the outside of the protective cover 100, and a monitoring system is arranged inside the protective cover 100. Through communication technology, the operator can realize the control and monitoring of the laser welding mechanism inside the protective cover 100 from the outside of the protective cover 100, so as to avoid the operator from being directly exposed to ultraviolet rays and damaging the skin. On this basis, a laser beam is emitted by a laser emitting unit 126, and the laser beam is reflected to the position to be welded of the workpiece through a galvanometer assembly 110, so as to achieve the purpose of laser welding. In this process, the workbench 101 is pulled along the protective cover by the existing technology. The protective cover 100 moves in the length direction, and through the cooperation of the linear module 102 and the linear module 2 104, the laser emitting unit 126, the blocking assembly 111 and the galvanometer assembly 110 are pulled to move in the vertical direction and the width direction of the protective cover 100, and the lens 117 is driven to approach the laser emitting unit 126 through the linear module 4 112, and the deflection angle of the lens 117 is changed by the motor 4 114. In this way, the automatic laser welding of the workpiece can be realized. It should be noted that the operator can realize the automatic welding of the workpiece by programming and adjusting the control terminal outside the protective cover 100. This is achievable by the existing technology and will not be described in detail.

[0070] One of the core aspects of the present invention is to intercept welding impurities and dissipate heat from the lens during laser welding. Specifically:

[0071] 1. The side nozzle is used to receive inert gas, such as nitrogen, etc. The inert gas can be drawn in by existing blowers or air pumps. The inert gas is blown to the welding position of the workpiece through the side nozzle, threaded shaft, external hose and external blowing nozzle in sequence. On the one hand, it provides inert protective gas for welding. On the other hand, the inert protective gas forms an air curtain around the welding position to intercept dust and impurities generated by welding and prevent them from splashing toward the galvanometer assembly.

[0072] 2. The water is drawn into the frame through the liquid inlet pipe by a water pump, and then discharged through the liquid outlet pipe, forming a stream of flowing water in the frame to perform liquid cooling on the back of the lens;

[0073] The air is drawn into the air inlet chamber through the positive pressure pump through the air inlet pipe, and then blown to the front of the lens along the gap between the guide ring and the lens. At the same time, the air on the front of the lens is drawn by the negative pressure pump and discharged through the air outlet chamber and the air outlet pipe in sequence. In this way, one blows the air outward and the other draws the air away, which can form a unidirectional air film on the front of the lens. The flow of the air film is orderly, so the irregular and disordered turbulence mentioned in the background technology will not be formed, which can minimize the impact on the laser beam, and at the same time can also achieve air cooling, heat dissipation and cleaning effects on the front of the lens.

[0074] In the present application, the front side of the lens refers to the side of the lens used to reflect laser light, and the back side refers to the side parallel to the front side.

[0075] The linear module mentioned in the present application can be an existing screw linear motion technology, that is, the screw is driven to rotate by a motor, and the rotation of the screw drives the nut on the screw, and the nut moves with the object connected to it.

[0076] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fully automatic double-station high-efficiency laser welding machine, characterized in that: The invention comprises a protective cover (100) and a laser welding mechanism arranged in the protective cover (100); the protective cover (100) is provided with an inlet and an outlet on two sides along the length direction, and each inlet and an outlet is matched with a gate, and the inlet and outlet can be opened or closed by the gate; at least two workbenches (101) are arranged in an array along the length direction in the protective cover (100); and the workbenches (101) can be displaced along the length direction of the protective cover (100); The laser welding mechanism comprises a laser emitting unit (126); the outer shape of the laser emitting unit (126) is set to be cylindrical and the outer part is provided with a rotating bracket (109); a blocking component (111) and a galvanometer component (110) are respectively installed on the rotating bracket (109) and are located on both sides of the laser emitting unit (126); the blocking component (111) is used to block dust and welding slag generated during welding from approaching the galvanometer component (110); the galvanometer component (110) is used to cooperate with the laser emitting unit (126) to achieve laser welding processing of the workpiece; at the same time, a heat dissipation structure is arranged inside the galvanometer component (110), which can perform air cooling on the front side of the galvanometer component (110) and liquid cooling on the back side; and the air cooling will form a unidirectional air film on the front side of the galvanometer component (110); The galvanometer assembly (110) comprises an adjustment bracket (113) mounted on a rotating bracket (109) in a radially sliding manner along a laser emitting unit (126), and a linear module (112) for driving the adjustment bracket (113) to move. Two cantilevers (115) are mounted at the bottom of the adjustment bracket (113). A mirror bracket (125) is rotatably mounted between the two cantilevers (115). A rotating shaft formed at the rotatable mounting position is dynamically connected to a motor (114) mounted on the adjustment bracket (113). The axis of the rotating shaft is perpendicular to the sliding direction of the adjustment bracket (113) and perpendicular to the axis of the laser emitting unit (126). A galvanometer component is mounted on the mirror bracket (125). The galvanometer component comprises a mirror frame (116) fixed on a mirror bracket (125); the mirror frame (116) is cylindrical in shape and the axis of the mirror frame (116) is perpendicular to the axis of the rotating shaft; one end of the mirror frame (116) facing the laser emitting unit (126) is open and provided with a lens (117); the other end of the mirror frame (116) is closed; An inner bracket (118) is provided inside the mirror frame (116); The galvanometer component further comprises a liquid inlet pipe (119), the liquid outlet end of the liquid inlet pipe (119) extends into the mirror frame (116) and is connected to the inner bracket (118), the liquid inlet end of the liquid inlet pipe (119) is used to receive water, and a bypass hole for avoiding the liquid inlet pipe (119) is provided at the closed end of the mirror frame (116), and a liquid outlet pipe (120) extends from the opening of the bypass hole; The galvanometer component further comprises an outer cover (121) coaxially located on the periphery of the mirror frame (116); one end of the outer cover (121) facing the laser emitting unit (126) is open and is provided with a guide ring (122); the inner diameter of the guide ring (122) is smaller than the outer diameter of the lens (117); the other end of the outer cover (121) is closed and is provided with a fixing hole; the fixing hole is connected to the outer wall of the liquid outlet pipe (120); the closed end of the outer cover (121) is also provided with an air inlet hole and an air outlet hole; the air inlet hole is connected to an air inlet pipe (123) at its opening; and the air outlet hole is connected to an air outlet pipe (124) at its opening; A partition is also provided inside the outer cover sleeve (121), and the partition divides the inner cavity of the outer cover sleeve (121) into two chambers that are not connected to each other, one chamber is connected to the air inlet, and the other chamber is connected to the air outlet.

2. A fully automatic double-station high-efficiency laser welding machine according to claim 1, characterized in that: The laser welding mechanism comprises a transverse support (103) and a linear module 1 (102) for driving the transverse support (103) to move in a vertical direction; a movable support (105) is slidably mounted on the transverse support (103) along the width direction of the protective cover (100); the movable support (105) is driven to move by a linear module 2 (104) arranged on the transverse support (103); and a laser emitting unit (126) is mounted on the movable support (105); A connecting bracket (107) and a linear module three (106) for driving the connecting bracket (107) to move in a vertical direction are installed on the movable bracket (105); a connecting ring is installed on the connecting bracket (107) via a bearing; the connecting ring is coaxially sleeved on the outside of the laser emitting unit (126); a motor one (108) for driving the connecting ring to rotate is arranged on the connecting bracket (107); and the connecting ring is connected to the rotating bracket (109).

3. The fully automatic double-station high-efficiency laser welding machine according to claim 1 is characterized in that: The blocking assembly (111) comprises a threaded shaft (1112) arranged vertically and in the shape of a hollow shaft, and the threaded shaft (1112) can perform the following actions: the threaded shaft (1112) moves only along the axis direction; the threaded shaft (1112) rotates only around the axis; the threaded shaft (1112) rotates around the axis while moving along the axis direction; A base (1113) is installed at the bottom of the threaded shaft (1112); a connecting seat (1114) is hingedly installed on the base (1113); and a hinged shaft formed at the hinged position is power-connected to a motor 3 (1115) arranged on the base (1113); an outer blowing nozzle (1116) in the shape of a hollow shaft is extended from the outer surface of the connecting seat (1114); an inner core tube (1117) in the shape of a hollow shaft is coaxially installed in the outer blowing nozzle (1116) through a bracket body; an end of the outer blowing nozzle (1116) connected to the connecting seat (1114) is also connected to an outer hose (1118); a distal end of the outer hose (1118) is arranged in the threaded shaft (1112); a side nozzle is arranged on the outer circumferential surface of the threaded shaft (1112); an end of the inner core tube (1117) close to the connecting seat (1114) is connected to an inner hose (1119); and a distal end of the inner hose (1119) passes through the threaded shaft (1112).

4. The fully automatic double-station high-efficiency laser welding machine according to claim 3 is characterized in that: Two second motors (1111) are mounted on the rotating bracket (109). The second motor (1111) and the threaded shaft (1112) are connected to each other by a power transmission member. Two corresponding power transmission members are provided. The driven member of each power transmission member is restricted to only rotate. A threaded connection is formed between the driven member of one power transmission member and the threaded shaft (1112), and a sliding connection is formed between the driven member of the other power transmission member and the threaded shaft (1112) in the vertical direction.

5. The fully automatic double-station high-efficiency laser welding machine according to claim 4 is characterized in that: A slide groove is provided on the outer cylindrical surface of the threaded shaft (1112) along the axis direction, and a protrusion is provided on the inner wall of the driven member, and the protrusion slides in the slide groove.

6. The fully automatic double-station high-efficiency laser welding machine according to claim 1 is characterized in that: The end of the air inlet pipe (123) is connected to a positive pressure pump, and the end of the air outlet pipe (124) is connected to a negative pressure pump.

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