Hand-held laser cladding device

Abstract

The application relates to the technical field of laser cladding, and discloses a handheld laser cladding device which comprises a gun body, a cladding head and a guiding and supporting mechanism. The guiding and supporting mechanism is connected to the lower side of the gun body through an air cylinder, and the bottom of the guiding and supporting mechanism is provided with a guide wheel which can roll on the surface of a workpiece; the guiding and supporting mechanism further comprises a fixing base, a base which is rotationally connected through a fixing shaft, a limiting ring and a sliding assembly which is used for locking an angle, and the working angle can be adjusted and locked. The application is further provided with a fixing mechanism, the cladding head can be quickly disassembled by driving a positioning block through a buckle pressing rod of an eccentric wheel structure. The application transfers the weight of the equipment to the workpiece through the guiding and supporting mechanism, solves the problems that the operators are tired and the machining is unstable due to the overweight of the equipment, reduces the operation burden, improves the cladding stability and quality, the angle adjusting function enhances the adaptability to special-shaped workpieces, and the quick replacement structure significantly improves the maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of laser cladding technology, and in particular to a handheld laser cladding device. Background Technology

[0002] Laser cladding technology, as an advanced surface modification and repair technique, has been widely used in many industrial fields. For large workpieces that are bulky, complex in structure, or difficult to move, handheld laser cladding equipment has become an important processing tool due to its advantages of flexible operation and high portability.

[0003] However, during operation, handheld laser cladding equipment, including the gun body, cladding head, and connected tubing, all have considerable weight. Operators must rely entirely on their arm strength to support the entire weight of the equipment and control its movement across the workpiece surface.

[0004] During prolonged continuous operation, operators inevitably experience muscle fatigue, leading to involuntary hand tremors. These tremors directly disrupt the stable distance and uniform movement speed required between the cladding head and the workpiece—both parameters crucial for ensuring the quality of the cladding layer. Therefore, operational instability often results in uneven cladding layer thickness, poor surface smoothness, and even defects such as incomplete fusion, severely impacting processing quality and reliability.

[0005] It is evident that existing handheld laser cladding equipment generally lacks effective load reduction and guiding stability structures, which directly links the operator's physical exertion to the final processing quality. This greatly limits its application in long-term, high-precision operation scenarios. Therefore, this utility model proposes a handheld laser cladding device to address the shortcomings of existing technologies. Summary of the Invention

[0006] To overcome the above shortcomings, this utility model provides a handheld laser cladding device, which aims to improve the problems of the large self-weight of some existing handheld laser cladding devices, the fatigue and shaking caused by prolonged hand-holding by operators, and the resulting instability in cladding accuracy and quality.

[0007] This utility model provides a handheld laser cladding device, including a gun body and a cladding head, as well as a guide support mechanism. The guide support mechanism is telescopically connected to the lower side of the gun body via a pneumatic cylinder. The guide support mechanism includes a fixed base, a base, a limiting ring, and a sliding assembly. The fixed base is fixed to the end of the pneumatic cylinder away from the gun body. The base is rotatably connected to the fixed base via a fixed shaft, and a guide wheel is rotatably connected to the bottom of the base. The limiting ring is fitted onto the fixed shaft and rotates synchronously with it. The sliding assembly is mounted on the fixed base and engages with the limiting ring to lock the rotation angle of the base relative to the fixed base.

[0008] This structural combination allows the guide wheels of the handheld laser cladding equipment to roll on the workpiece surface during operation, transferring most of the equipment's weight to the workpiece and significantly reducing the operator's physical burden. Simultaneously, the distance between the cladding head and the workpiece can be precisely adjusted via a pneumatic cylinder, and the sliding component, in conjunction with a limit ring, allows for convenient and quick adjustment and locking of the equipment's working angle, ensuring stability and precision during the cladding process.

[0009] Preferably, the sliding component includes a housing, a locking head is slidably disposed inside the housing, and a spring is disposed between the locking head and the housing to provide a restoring force. The locking head engages with the limiting ring under the elastic force of the spring.

[0010] Preferably, the guide support mechanism further includes an extension frame, which is detachably mounted on the top of the base, and a fixing seat is fixed to the top of the extension frame.

[0011] Preferably, the handheld laser cladding also includes a fixing mechanism for detachably connecting the cladding head and the gun body. The fixing mechanism includes a connecting ring that connects the gun body and the cladding head.

[0012] Preferably, the fixing mechanism further includes a clamping rod, a connecting arm, a sliding ring, and a positioning block. The clamping rod is pivotally connected to the outside of the connecting ring. One end of the connecting arm is connected to the clamping rod, and the other end of the connecting arm is connected to the sliding ring. The positioning block is fixed on the sliding ring and is driven by the action of the clamping rod to engage or disengage the cladding head.

[0013] Preferably, a second spring is provided between the sliding ring and the connecting ring. The clamping rod drives the connecting arm and the sliding ring to move to squeeze the second spring, thereby causing the positioning block to disengage from the cladding head.

[0014] Preferably, the clamping rod is an eccentric wheel structure, which drives the connecting arm to produce linear displacement through its eccentric rotation.

[0015] Preferably, the outer peripheral wall of the cladding head is provided with a groove that cooperates with the positioning block.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the problem that existing handheld laser cladding equipment relies entirely on manual support, leading to operator fatigue and hand tremors that affect processing accuracy. By setting up a guide support mechanism, which is connected to the gun body via a pneumatic cylinder and has guide wheels at the bottom that can roll on the workpiece surface, this invention achieves the technical effect of transferring the weight of the equipment to the workpiece surface, reducing the operator's burden, and achieving smooth movement through the guide wheels, thus significantly improving the stability of the cladding process and the quality of the cladding layer.

[0018] 2. This utility model solves the problem in the prior art that handheld devices are difficult to maintain a stable posture for operation at different angles or on complex curved surfaces by setting an angle adjustment structure in the guide support mechanism, consisting of a fixed seat, a rotatable base, a limiting ring, and a sliding component that can lock and unlock. It achieves the technical effect of conveniently and quickly adjusting and locking the working angle of the cladding head, enhancing the adaptability of the equipment to irregular workpieces, and expanding the application scenarios.

[0019] 3. This utility model, by setting a fixing mechanism, which includes a connecting ring, a clamping rod composed of an eccentric wheel, a connecting arm, and a positioning block, solves the problem in the prior art that the replacement process of vulnerable parts such as the cladding head is complicated, time-consuming, and affects the overall work efficiency. It achieves the technical effect that the operator only needs to move the clamping rod to quickly unlock and lock the cladding head, which greatly simplifies the maintenance process, shortens downtime, and improves the ease of use of the equipment. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a handheld laser cladding device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the guide wheel structure of a handheld laser cladding device proposed in this utility model;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0024] Legend:

[0025] 1. Gun body; 2. Air cylinder;

[0026] 3. Guide support mechanism; 31. Base; 32. Elevator; 33. Fixed seat; 34. Fixed shaft; 35. Limiting ring;

[0027] 36. Sliding component; 361. Housing; 362. Spring 1; 363. Clip;

[0028] 37. Guide wheel;

[0029] 4. Fixing mechanism; 41. Connecting ring; 42. Clamping rod; 43. Connecting arm; 44. Spring 2; 45. Sliding ring; 46. Positioning block;

[0030] 5. Cladding head. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example:

[0033] Reference Figure 1 and Figure 2 An extender frame 32 is detachably mounted on the top of the base 31, and a fixed seat 33 is fixed to the top of the extender frame 32. The extension frame 32 increases the overall height of the guide support mechanism 3, enabling it to adapt to different operating heights and different workpiece sizes. Operators can choose to install or remove the extender frame 32 according to the actual situation, thereby flexibly adjusting the working height of the handheld laser cladding.

[0034] Reference Figure 1 and Figure 4 The fixing mechanism 4 detachably fixes the cladding head 5 to the gun body 1. The fixing mechanism 4 includes a connecting ring 41, which connects the gun body 1 and the cladding head 5. The connecting ring 41 serves as the main structure of the fixing mechanism 4. The connecting ring 41 provides a structural basis for the quick disassembly and installation of the cladding head 5. The fixing mechanism 4 also includes a clamping rod 42, a connecting arm 43, a sliding ring 45, and a positioning block 46. The clamping rod 42 is pivotally connected to the outside of the connecting ring 41. The clamping rod 42 has an eccentric wheel structure. When the clamping rod 42 rotates, the eccentric action of the eccentric wheel will drive the connecting arm 43 to produce a linear displacement. One end of the connecting arm 43 is connected to the clamping rod 42, and the other end of the connecting arm 43 is connected to the sliding ring 45. The positioning block 46 is fixed on the sliding ring 45. The positioning block 46 is driven by the movement of the sliding ring 45, thereby realizing the clamping or disassembly of the cladding head 5.

[0035] The outer peripheral wall of the cladding head 5 is provided with a slot that cooperates with the positioning block 46. After the cladding head 5 is installed in place, the positioning block 46 can be precisely locked into the slot of the cladding head 5 by operating the clamping rod 42, so as to achieve a firm fixation of the cladding head 5. When the cladding head 5 needs to be replaced, the clamping rod 42 is operated in the opposite direction, and the positioning block 46 will be disengaged from the slot, so the cladding head 5 can be quickly removed. This quick locking and unlocking structure based on the eccentric wheel and the positioning block 46 greatly improves the replacement efficiency of the cladding head 5, reduces the complexity of maintenance, and ensures the convenience of the handheld laser cladding equipment in long-term use.

[0036] Reference Figure 1 and Figure 2An extender frame 32 is detachably mounted on the top of the base 31, and a fixed seat 33 is fixed to the top of the extender frame 32. The extension frame 32 increases the overall height of the guide support mechanism 3, enabling it to adapt to different operating heights and different workpiece sizes. Operators can choose to install or remove the extender frame 32 according to the actual situation, thereby flexibly adjusting the working height of the handheld laser cladding.

[0037] Reference Figure 1 and Figure 4 The fixing mechanism 4 is used to realize the detachable connection between the cladding head 5 and the gun body 1. The fixing mechanism 4 includes a connecting ring 41 as the main body of the connection, which connects the gun body 1 and the cladding head 5. The fixing mechanism 4 also includes a latching rod 42, a connecting arm 43, a sliding ring 45, and a positioning block 46. The latching rod 42 is pivotally connected to the outside of the connecting ring 41 as an operating element. The structure of the latching rod 42 is an eccentric wheel. One end of the connecting arm 43 is connected to the latching rod 42, and the other end of the connecting arm 43 is connected to the sliding ring 45. The positioning block 46 is fixed on the sliding ring 45. A second spring 44 is provided between the sliding ring 45 and the connecting ring 41. In the locked state, the second spring 44 is in a naturally extended state, and its elastic force keeps the positioning block 46 in the extended latching position.

[0038] The outer peripheral wall of the cladding head 5 is provided with a slot that cooperates with the positioning block 46. When it is necessary to disassemble the cladding head 5, the clamping rod 42 is moved, and the eccentric wheel structure of the clamping rod 42 rotates, thereby pulling the connecting arm 43 and the sliding ring 45 to squeeze the second spring 44. After the second spring 44 is compressed, its reaction force on the sliding ring 45 causes the positioning block 46 to disengage from the slot of the cladding head 5, completing the unlocking action. The operation is reversed during installation. This structure ensures the stability of the cladding head 5 during installation and the convenience of disassembly.

[0039] The sliding assembly 36 includes a housing 361, in which a locking head 363 is slidably disposed. A spring 362 for providing a reset force is disposed between the locking head 363 and the housing 361. Under the elastic force of the spring 362, the locking head 363 engages with the limiting ring 35. By pressing the locking head 363, the elastic force of the spring 362 can be overcome, causing the locking head 363 to disengage from the limiting ring 35, thereby releasing the lock on the limiting ring 35. An extension frame 32 is detachably mounted on the top of the base 31, and a fixing seat 33 is fixed to the top of the extension frame 32. The extension frame 32 has a certain extension height. Through its detachable connection with the base 31, it can be installed or removed according to actual operating requirements, thereby adjusting the working distance between the cladding head 5 and the workpiece surface.

[0040] It also includes a fixing mechanism 4, which is used to achieve a detachable connection between the cladding head 5 and the gun body 1. The fixing mechanism 4 includes a connecting ring 41, which connects the gun body 1 and the cladding head 5. The fixing mechanism 4 also includes a locking rod 42, a connecting arm 43, a sliding ring 45, and a positioning block 46. The locking rod 42 is pivotally connected to the outside of the connecting ring 41. One end of the connecting arm 43 is connected to the locking rod 42, and the other end of the connecting arm 43 is connected to the sliding ring 45. The positioning block 46 is fixed on the sliding ring 45. The locking rod 42 drives the connecting arm 43 to move the sliding ring 45, thereby enabling the positioning block 46 to engage or disengage from the cladding head 5. The sliding ring 45 and the connecting ring 41 are connected... A second spring 44 is provided. When the clamping rod 42 pulls the connecting arm 43 and the sliding ring 45, it will squeeze the second spring 44. After being squeezed, the second spring 44 generates elastic force. This elastic force causes the sliding ring 45 to reset when the clamping rod 42 resets, so that the positioning block 46 is re-engaged into the slot of the cladding head 5. The clamping rod 42 is an eccentric wheel structure. When the clamping rod 42 rotates, the eccentric action of the eccentric wheel will drive the connecting arm 43 to produce linear displacement, thereby driving the positioning block 46. The outer peripheral wall of the cladding head 5 is provided with a slot that cooperates with the positioning block 46. After the positioning block 46 is engaged in the slot, the cladding head 5 is firmly fixed to the connecting ring 41, ensuring the stability of the cladding head 5 during operation.

[0041] The implementation principle of this application embodiment is as follows: During long-term operation of handheld laser cladding, deviations may occur for the operator. The weight of the equipment can be offset by installing a guide support mechanism 3 at the bottom of the gun body 1, reducing the operational burden. The distance between the guide support mechanism 3 and the work object is adjusted by a pneumatic cylinder 2. An extension frame 32 is installed on the top of the base 31 to increase the height of the equipment to meet operational needs. Moving the base 31 causes the top fixed shaft 34 to drive the limiting ring 35 to rotate inside the fixed seat 33. The limiting ring 35 is then fixed by a sliding component 36. The sliding component 36 presses down on the locking head 363 to squeeze the spring 362 inside the outer shell 361, thereby unlocking the limiting ring 35. The limiting ring 35 can then rotate freely to adjust the optimal working angle. The guide wheel 37 at the bottom of the base 31 slides on the surface of the object, allowing the cladding head 5 to perform laser cladding on the object more smoothly.

[0042] If the performance of the cladding head 5 deteriorates or is damaged during long-term use, it can be disassembled and replaced through the fixing mechanism 4. The fixing mechanism 4 connects the gun body 1 and the cladding head 5 together through the connecting ring 41. The latching rod 42 is composed of an eccentric wheel. When the latching rod 42 on the outside of the connecting ring 41 is moved, the latching rod 42 pulls the internal connecting arm 43. The connecting arm 43 drives the sliding ring 45 to squeeze the spring 44. The outer side of the cladding head 5 is provided with a groove so that the positioning block 46 can be unlocked from the bottom of the cladding head 5. The damaged cladding head 5 can be quickly replaced. The latching rod 42 is moved inward again so that the positioning block 46 can be re-locked into the outer groove of the cladding head 5 for fixation.

Claims

1. A handheld laser cladding device, comprising a gun body (1) and a cladding head (5) detachably connected to the gun body (1), characterized in that, It also includes a guide support mechanism (3), which is telescopically connected to the lower side of the gun body (1) via a pneumatic cylinder (2); the guide support mechanism (3) includes a fixed seat (33), which is fixed to the end of the pneumatic cylinder (2) away from the gun body (1); A base (31) is rotatably connected to a fixed seat (33) via a fixed shaft (34), and a guide wheel (37) is rotatably connected to the bottom of the base (31). A limiting ring (35) is fitted onto the fixed shaft (34) and rotates synchronously with the fixed shaft (34); and a sliding assembly (36) is mounted on the fixed base (33) and engages with the limiting ring (35) to lock the rotation angle of the base (31) relative to the fixed base (33).

2. The handheld laser cladding device according to claim 1, characterized in that, The sliding component (36) includes a housing (361), a locking head (363) is slidably disposed inside the housing (361), and a spring (362) for providing a restoring force is disposed between the locking head (363) and the housing (361). The locking head (363) engages with the limiting ring (35) under the elastic force of the spring (362).

3. The handheld laser cladding device according to claim 1, characterized in that, The guide support mechanism (3) also includes a riser (32), which is detachably mounted on the top of the base (31), and the fixing seat (33) is fixed to the top of the riser (32).

4. The handheld laser cladding device according to claim 1, characterized in that, It also includes a fixing mechanism (4), which is used to realize the detachable connection between the cladding head (5) and the gun body (1). The fixing mechanism (4) includes a connecting ring (41), which connects the gun body (1) and the cladding head (5).

5. The handheld laser cladding device according to claim 4, characterized in that, The fixing mechanism (4) further includes: a clamping rod (42) pivotally connected to the outside of the connecting ring (41), a connecting arm (43) one end of which is connected to the clamping rod (42), a sliding ring (45) connected to the other end of the connecting arm (43), and a positioning block (46) fixed on the sliding ring (45) and driven by the action of the clamping rod (42) to engage or disengage from the cladding head (5).

6. The handheld laser cladding device according to claim 5, characterized in that, A second spring (44) is provided between the sliding ring (45) and the connecting ring (41). The clamping rod (42) drives the connecting arm (43) and the sliding ring (45) to move to squeeze the second spring (44), thereby causing the positioning block (46) to disengage from the cladding head (5).

7. The handheld laser cladding device according to claim 5, characterized in that, The clamping rod (42) is an eccentric wheel structure, which drives the connecting arm (43) to produce linear displacement through its eccentric rotation.

8. The handheld laser cladding device according to claim 5, characterized in that, The outer peripheral wall of the cladding head (5) is provided with a slot that cooperates with the positioning block (46).

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