Laser welding head
By introducing anti-collision connecting tubes and sensors into the laser welding head, the sensors detect collisions and control the robot arm to move in the opposite direction. Combined with the automatic reset of the reset elastic element, the problem of trajectory correction after laser welding head collision is solved, and the reliability and efficiency of welding are improved.
Patent Information
- Application Number
- CN202520081315.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-14
AI Technical Summary
Existing laser welding heads are difficult to detect and correct their trajectory in time after an impact, resulting in severe damage and unsatisfactory welding results.
The design incorporates anti-collision connecting pipes, sensors, and reset elastic components. The sensors are spaced apart around the circumference of the anti-collision connecting pipes to detect any deviation in the welded pipe. The industrial control computer then controls the robot arm to move in the opposite direction, and the reset elastic component resets the welded pipe to prevent further damage.
Timely detection of collisions prevents further damage, reduces repair time, improves work efficiency, and ensures welding results.
Smart Images
Figure CN223718548U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to laser welding technical field, concretely relates to a laser welding head. BACKGROUND
[0002] In order to realize the welding effect, the laser welding head needs to move along the welding track with the movement mechanism, and in the process of welding, the laser welding head may be hit, and if the laser welding head still works along the original track after being hit, the damage degree of the laser welding head will be more serious, and even if the laser welding head can continue to weld after being hit, the ideal welding effect cannot be obtained. Therefore, how to timely find that the laser welding head is hit and how to correct the movement track of the laser welding head after being hit are technical problems to be solved by the person skilled in the art. SUMMARY
[0003] The utility model discloses a laser welding head, and aims at solving the problem that the existing laser welding head is difficult to find after being hit and cannot correct the movement track in time.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0005] A laser welding head is provided, which comprises a welding head body, an anti-collision connecting pipe, a welding pipe, a sensor and a reset elastic member. One end of the anti-collision connecting pipe is connected to the welding head body, and the other end of the anti-collision connecting pipe is connected to the welding pipe. The number of the sensors is multiple, and the multiple sensors are arranged on the anti-collision connecting pipe in a circumferential direction. One end of the reset elastic member is connected to the welding head body, and the other end of the reset elastic member is connected to the welding pipe.
[0006] Optionally, the lower end of the anti-collision connecting pipe is provided with a connecting protrusion, the upper end of the welding pipe is sleeved on the connecting protrusion, and a first sealing ring is arranged between the outer wall of the connecting protrusion and the inner wall of the welding pipe.
[0007] Optionally, the inside of the anti-collision connecting pipe is provided with a sensing installation groove, the lower end of the anti-collision connecting pipe is provided with a sensing hole in communication with the sensing installation groove, the side surface of the anti-collision connecting pipe is provided with a circuit hole in communication with the sensing installation groove, and the sensor is arranged in the sensing installation groove.
[0008] Optionally, the welding pipe comprises a first pipe body, a second pipe body and a connecting clamp. The first pipe body is connected to the anti-collision connecting pipe, the second pipe body is connected to the first pipe body and can move along the axial direction of the first pipe body, the connecting clamp is fixedly connected to the first pipe body, and the connecting clamp is sleeved on the second pipe body.
[0009] Optionally, a second sealing ring is arranged between the inner wall of the first pipe body and the outer wall of the second pipe body.
[0010] Optionally, the number of the sensors is four, and the four sensors are uniformly distributed along the circumference of the anti-collision connecting pipe.
[0011] Optionally, the laser welding head further comprises a mounting screw, one end of the reset elastic member is connected to the welding head body through the mounting screw, and the other end of the reset elastic member is connected to the welding pipe through the mounting screw.
[0012] Optionally, the sensor is an inductive proximity switch.
[0013] Optionally, the reset elastic member is a spring.
[0014] Compared with the prior art, the utility model has the advantages that:
[0015] In the laser welding head, the welding head body is connected to an external movement mechanism, such as a mechanical hand, and the anti-collision connecting pipe plays a role in connecting the welding head body and the welding pipe, and when normal welding is performed, the anti-collision connecting pipe and the welding pipe are coaxially arranged, so that welding can be smoothly performed, and if collision occurs during welding, that is, a foreign object collides with the welding pipe, the welding pipe will be offset, and the plurality of sensors are arranged along the circumference of the anti-collision connecting pipe and are spaced apart from each other on the anti-collision connecting pipe, so that if the welding pipe is offset, at least one sensor cannot sense the welding pipe, or at least one sensor senses the welding pipe at a distance different from other sensors, and at this time, it can be concluded that collision has occurred, and after the work control machine for controlling welding work receives the signal of the sensor, the mechanical hand can be controlled to move in the direction opposite to the movement trajectory, so as to prevent further collision, so that the collision situation can be found in time, and further damage to the entire laser welding head can be prevented.
[0016] In addition, after the work control machine for controlling welding work receives the signal of the sensor, the mechanical hand is controlled to move in the direction opposite to the movement trajectory, at this time, the welding pipe will return to the initial position under the driving of the reset elastic member, so as to prevent other accidents, if only slight collision occurs, the entire laser welding head does not need to be repaired, and through the reset elastic member, manual correction is not needed, welding can be continued after the foreign object is removed, the maintenance time is reduced, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0018] Fig. 1 It is a structural schematic diagram of the laser welding head of the present application;
[0019] Fig. 2 It is an explosion schematic diagram of the anti-collision connecting pipe and the first pipe body of the laser welding head of the present application;
[0020] Fig. 3 It is an explosion schematic diagram of the welding pipe of the laser welding head of the present application.
[0021] In the figure: 1, welding head body; 2, anti-collision connecting pipe; 21, connecting protrusion; 3, welding pipe; 31, first pipe body; 32, second pipe body; 33, connecting clamp; 4, sensor; 5, reset elastic member; 6, first sealing ring; 7, second sealing ring; 8, mounting screw. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments only constitute some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0023] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0024] In addition, the terms "first", "second" are only for description purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features.
[0025] The laser welding head of the present application will be described below. Figs. 1-3 The laser welding head of the present application will be described below.
[0026] As shown in Figs. 1-3 The utility model provides a laser welding head, including welding head body 1, anti -collision connecting tube 2, welding pipe 3, sensor 4 and reset elastic part 5, one end of anti -collision connecting tube 2 is connected in welding head body 1, the other end of anti -collision connecting tube 2 is connected in welding pipe 3, the quantity of sensor 4 is multiple, multiple sensor 4 is along the circumferential interval of anti -collision connecting tube 2 and is located in anti -collision connecting tube 2, one end of reset elastic part 5 is connected in welding head body 1, the other end of reset elastic part 5 is connected in welding pipe 3, in addition, as a whole, welding head body 1, anti -collision connecting tube 2 and welding pipe 3 are sequentially connected from top to bottom.
[0027] In the laser welding head provided by the embodiment, the welding head body 1 is connected to an external motion mechanism, such as a robot, and the anti-collision connecting tube 2 serves as a link between the welding head body 1 and the welding pipe 3. During normal welding, the anti-collision connecting tube 2 and the welding pipe 3 are coaxially arranged, so that welding can be smoothly performed. During welding, if a collision occurs, i.e., a foreign object hits the welding pipe 3, the welding pipe 3 will be offset. Since the multiple sensors 4 are spaced apart along the circumference of the anti-collision connecting tube 2, at least one sensor 4 will not be able to sense the welding pipe 3, or at least one sensor 4 will sense the welding pipe 3 at a distance that is inconsistent with the other sensors. At this time, it can be concluded that a collision has occurred. After the industrial computer for controlling the welding work receives the signal of the sensor 4, the robot can be controlled to move in the opposite direction of the motion trajectory, preventing further collisions, so that the collision can be detected in a timely manner and further damage to the entire laser welding head can be prevented.
[0028] In addition, after the industrial computer for controlling the welding work receives the signal of the sensor 4, the robot is controlled to move in the opposite direction of the motion trajectory. At this time, the welding pipe 3 will return to the original position under the drive of the reset elastic part 5, preventing other accidents from occurring. If it is only a slight collision, the entire laser welding head does not need to be repaired. By providing the reset elastic part 5, manual correction is not needed. After the foreign object is removed, welding can continue, reducing repair time and improving work efficiency.
[0029] In some embodiments, the lower end of the anti-collision connecting pipe 2 is provided with a connecting protrusion 21, the upper end of the welded pipe 3 is sleeved on the connecting protrusion 21, and a first sealing ring 6 is arranged between the outer wall of the connecting protrusion 21 and the inner wall of the welded pipe 3. It can be understood that the anti-collision connecting pipe 2 and the welded pipe 3 are not fixedly connected, and if a collision occurs, that is, a foreign object collides with the welded pipe 3, the welded pipe 3 will be offset, so that the sensor 4 can be sensed, so that it can be known that a collision has occurred, and the intelligent degree is higher. If it is fixedly connected, it will cause greater damage after the collision, and it is not convenient for subsequent deviation recovery.
[0030] In some embodiments, the inside of the anti-collision connecting pipe 2 is provided with a sensing installation groove, the lower end of the anti-collision connecting pipe 2 is provided with a sensing hole in communication with the sensing installation groove, and the side of the anti-collision connecting pipe 2 is provided with a wire hole in communication with the sensing installation groove. The sensor 4 is arranged in the sensing installation groove, and the wire hole is used for installing a wire harness, so that the sensing signal of the sensor 4 can be transmitted to an external industrial computer. The lower part of the sensor 4 can be sensed through the sensing hole to determine whether the welded pipe 3 exists below. If a collision occurs, that is, a foreign object collides with the welded pipe 3, the welded pipe 3 will be offset, and at least one sensing hole below the welded pipe 3 cannot be detected at this time. At this time, it can be concluded that a collision has occurred, and the collision situation can be discovered more timely.
[0031] In some embodiments, the welded pipe 3 comprises a first pipe body 31, a second pipe body 32 and a connecting clamp 33, the first pipe body 31 is connected to the anti-collision connecting pipe 2, the second pipe body 32 is connected to the first pipe body 31 and can move along the axial direction of the first pipe body 31, and the connecting clamp 33 is fixedly connected to the first pipe body 31. The connecting clamp 33 is sleeved on the second pipe body 32. Specifically, the connecting clamp 33 can be fixedly installed on the lower edge of the first pipe body 31 by a screw. The second pipe body 32 can move on the first pipe body 31, so that the overall length of the welded pipe 3 can be steplessly adjusted. After the length adjustment is completed, the connecting clamp 33 can be locked to prevent the second pipe body 32 from moving, thereby realizing the final adjustment. The adjustment is more convenient, and the stepless adjustment can be realized by this arrangement, which has better adaptability.
[0032] In some embodiments, a second sealing ring 7 is arranged between the inner wall of the first pipe body 31 and the outer wall of the second pipe body 32, which can improve the sealing effect of the welded pipe 3 as a whole.
[0033] In some embodiments, the number of second sealing rings 7 is two, and the sealing effect is better.
[0034] In some embodiments, the number of sensors 4 is four, and the four sensors 4 are uniformly distributed along the circumference of the anti-collision connecting pipe 2. The sensing effect is better, and the accuracy is higher.
[0035] It can be understood that in some other embodiments, the number of sensors 4 can be changed according to actual conditions.
[0036] In some embodiments, the laser welding head further comprises a mounting screw 8, one end of the reset elastic member 5 is connected to the welding head body 1 through the mounting screw 8, and the other end of the reset elastic member 5 is connected to the welding pipe 3 through the mounting screw 8. By providing the mounting screw 8, a better mounting position can be provided for the reset elastic member 5, and the reset is facilitated.
[0037] In some embodiments, the sensor 4 is an inductive proximity switch, which can better sense whether the welding pipe 3 is offset.
[0038] In some embodiments, the reset elastic member 5 is a spring, and the reset speed is faster and the reset effect is better.
[0039] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.
Claims
1. A laser welding head, characterized in that, The assembly includes a welding head body (1), an anti-collision connecting pipe (2), a welding pipe (3), a sensor (4), and a reset elastic element (5). One end of the anti-collision connecting pipe (2) is connected to the welding head body (1), and the other end of the anti-collision connecting pipe (2) is connected to the welding pipe (3). There are multiple sensors (4), which are spaced apart along the circumference of the anti-collision connecting pipe (2). One end of the reset elastic element (5) is connected to the welding head body (1), and the other end of the reset elastic element (5) is connected to the welding pipe (3).
2. The laser welding head according to claim 1, characterized in that, The lower end of the anti-collision connecting pipe (2) is provided with a connecting protrusion (21), the upper end of the welding pipe (3) is sleeved on the connecting protrusion (21), and a first sealing ring (6) is provided between the outer wall of the connecting protrusion (21) and the inner wall of the welding pipe (3).
3. The laser welding head according to claim 1, characterized in that, The anti-collision connecting pipe (2) has an induction mounting groove inside, and the lower end of the anti-collision connecting pipe (2) has an induction hole communicating with the induction mounting groove. The side of the anti-collision connecting pipe (2) has a line hole communicating with the induction mounting groove. The sensor (4) is located in the induction mounting groove.
4. The laser welding head according to claim 1, characterized in that, The welded pipe (3) includes a first pipe body (31), a second pipe body (32), and a connecting clamp (33). The first pipe body (31) is connected to the anti-collision connecting pipe (2). The second pipe body (32) is connected to the first pipe body (31) and can move along the axial direction of the first pipe body (31). The connecting clamp (33) is fixedly connected to the first pipe body (31) and is sleeved on the second pipe body (32).
5. The laser welding head according to claim 4, characterized in that, A second sealing ring (7) is provided between the inner wall of the first tube (31) and the outer wall of the second tube (32).
6. The laser welding head according to claim 1, characterized in that, The number of sensors (4) is four, and the four sensors (4) are evenly distributed at intervals along the circumference of the anti-collision connecting pipe (2).
7. The laser welding head according to claim 1, characterized in that, The laser welding head also includes a mounting screw (8), one end of the reset elastic element (5) is connected to the welding head body (1) through the mounting screw (8), and the other end of the reset elastic element (5) is connected to the welding tube (3) through the mounting screw (8).
8. The laser welding head according to claim 1, characterized in that, The sensor (4) is an inductive proximity switch.
9. The laser welding head according to claim 1, characterized in that, The reset elastic element (5) is a spring.