Anti-collision detection device for inner hole cladding head

Abstract

The utility model relates to the technical field of laser cladding, in particular to an inner hole cladding head anti-collision detection device which comprises a detection rod and a sensor, the front end of the detection rod is located in front of an inner hole cladding head, the rear end of the detection rod is sleeved with a guide pipe, and the detection rod is in sliding fit with the guide pipe. The guide pipe is connected with the inner hole cladding head through a fixing plate, the outer side of the detection rod is sleeved with a spring connected with the guide pipe, the end, away from the detection rod, of the guide pipe is connected with a protection pipe, and a rear end sensor used for detecting the detection rod is arranged in the protection pipe. The inner wall of the blind hole is detected through the detection rod, the sensor is made to be far away from the cladding nozzle, high-temperature damage is avoided, meanwhile, the outer side of the sensor is protected through the protection pipe, smoke dust is prevented from influencing the detection precision, anti-collision detection is achieved, the detection mode is simple and reliable, and cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cladding, in particular to an anti-collision detection device for an inner hole cladding head. Background Art

[0002] Laser cladding is a surface modification technology. It forms a metallurgical bonded filler cladding layer on the surface of the base material by adding a cladding material on the surface of the base material and using a high-energy density laser beam to melt and solidify it together with a thin layer on the surface of the base material.

[0003] As Figure 1 shown, during the operation of inner hole laser cladding, especially during blind hole operation, if the operator is slightly careless, the problem that the inner hole cladding head 2 collides with the inner end face of the blind hole 1 often occurs. To prevent collisions, the prior art is to install a sensor on the inner hole cladding head for distance detection. However, due to the harsh working conditions of inner hole cladding, the photoelectric sensor is easily interfered by powder and dust; the contact sensor is easily damaged by high temperature and laser radiation. Therefore, there is currently a lack of a solution with low cost and high reliability. Summary of the Utility Model

[0004] Aiming at the above deficiencies existing in the prior art, the utility model provides an anti-collision detection device for an inner hole cladding head. By detecting the inner wall of the blind hole with a detection rod, the sensor is kept away from the cladding nozzle, avoiding high-temperature damage. At the same time, the outside of the sensor is protected by a protective tube to prevent dust from affecting the detection accuracy, thereby realizing anti-collision detection. The detection method is simple, reliable, and low in cost.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] An anti-collision detection device for an inner hole cladding head includes a detection rod and a sensor. The front end of the detection rod is located in front of the inner hole cladding head. A guiding tube is sleeved on the rear end of the detection rod, and the detection rod is slidably matched with the guiding tube. The guiding tube is connected to the inner hole cladding head through a fixing plate. A spring connected to the guiding tube is sleeved on the outside of the detection rod. A protective tube is connected to the end of the guiding tube away from the detection rod, and a sensor for detecting the rear end of the detection rod is arranged inside the protective tube.

[0007] Preferably, the detection rod includes a front detection section, a middle guiding section, and a rear detection section. The diameters of the front detection section and the rear detection section are both smaller than that of the middle guiding section. A limiting plate cooperating with the end of the middle guiding section is sleeved on the outside of the front detection section. The limiting plate is connected to the inner hole cladding head. The middle guiding section is slidably matched with a guiding sleeve. The spring is sleeved on the outside of the rear detection section, and the sensor detects the end of the rear detection section.

[0008] Preferably, the protective tube is connected to the guiding tube through a connecting tube, and both the connecting tube and the protective tube and the guiding tube are detachably connected.

[0009] Preferably, a limiting ring and a limiting plate are sleeved outside the detecting rod. The detecting rod is in sliding fit with the limiting plate, and the limiting plate is connected to the inner hole cladding head.

[0010] Preferably, a sealing ring is provided between the guiding tube and the detecting rod.

[0011] Preferably, the sensor is a proximity switch or an optoelectronic device.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. The present utility model detects the inner wall of the blind hole through the detecting rod, so that the sensor is far away from the cladding nozzle, avoiding high-temperature damage. At the same time, the outside of the sensor is protected by the protective tube to prevent the dust from affecting the detection accuracy, thereby realizing anti-collision detection. The detection method is simple, reliable and low in cost.

[0014] 2. The present utility model ensures the sliding stability of the detecting rod through the guiding tube and the limiting plate, preventing the detecting rod from tilting. At the same time, the limiting plate can limit the forward movement position of the detecting rod to ensure the reliability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram during the operation of the inner hole cladding head;

[0016] Figure 2 is a schematic structural diagram of the present utility model;

[0017] Figure 3 is a schematic structural diagram of the cooperation between the sensor and the detecting rod;

[0018] Figure 4 is a schematic structural diagram of the detecting rod;

[0019] In the figure: 1 - blind hole; 2 - inner hole cladding head; 3 - detecting rod; 301 - front detection section; 302 - middle guiding section; 303 - rear detection section; 4 - limiting plate; 5 - limiting ring; 6 - guiding tube; 7 - spring; 8 - fixing plate; 9 - sensor; 10 - connecting tube; 11 - protective tube. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than 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 efforts shall fall within the protection scope of the present utility model.

[0021] As Figure 1 , Figure 2 shown, an anti-collision detection device for the inner hole cladding head 2 includes a detection rod 3 and a sensor 9. The front end of the detection rod 3 is located in front of the inner hole cladding head 2 and is used to detect the inner wall of the blind hole 1. The rear end of the detection rod 3 is sleeved with a guide tube 6. The detection rod 3 is slidably matched with the guide tube 6. The guide tube 6 is connected to the inner hole cladding head 2 through a fixing plate 8. As Figure 3 shown, a spring 7 connected to the guide tube 6 is sleeved outside the detection rod 3. After the detection rod 3 touches the inner wall of the blind hole 1, the spring 7 will be compressed. After the detection rod 3 leaves the inner wall of the blind hole 1, it will automatically reset under the action of the spring 7. A protective tube 11 is connected to the end of the guide tube 6 away from the detection rod 3. A sensor 9 for detecting the rear end of the detection rod 3 is provided in the protective tube 11. When the detection rod 3 touches the inner wall of the blind hole 1, the rearward movement of the rear end of the detection rod 3 will be detected by the sensor 9, and the signal is transmitted to the control system, thereby stopping the further advancement of the inner hole cladding head 2.

[0022] The sensor 9 is a proximity switch or optoelectronic. The sensor 9 and the cable are located in the protective sleeve, thereby protecting the sensor 9 and preventing powder and dust from entering, thus avoiding interference with the detection.

[0023] A sealing ring is provided between the guide tube 6 and the detection rod 3. The sealing ring is fixed on the inner wall of the guide tube 6 and can prevent powder and dust from entering.

[0024] The protective tube 11 is connected to the guide tube 6 through a connecting tube 10. The connecting tube 10 is detachably connected to both the protective tube 11 and the guide tube 6, such as threaded connection, so that it is convenient to repair or disassemble the sensor 9.

[0025] In this application, there are various ways to limit the detection rod 3. The following lists two methods;

[0026] Embodiment 1,

[0027] As Figure 4As shown, the detection rod 3 includes a front detection section 301, a middle guiding section 302, and a rear detection section 303. The diameters of both the front detection section 301 and the rear detection section 303 are smaller than that of the middle guiding section 302. A limiting plate 4 that cooperates with the end of the middle guiding section 302 is sleeved outside the front detection section 301. The limiting plate 4 is connected to the inner hole cladding head 2. The limiting plate 4 will block the end of the middle guiding section 302, thereby limiting the detection rod 3. A spring 7 is sleeved outside the rear detection section 303, and a sensor 9 detects the end of the rear detection section 303.

[0028] Embodiment 2,

[0029] A limiting ring 5 and a limiting plate 4 are sleeved outside the detection rod 3. The limiting ring 5 is fixed to the detection rod 3, the limiting plate 4 is connected to the inner hole cladding head 2, and the detection rod 3 is in sliding fit with the limiting plate 4. After the limiting ring 5 touches the limiting plate 4, the detection rod 3 can be limited.

[0030] When the inner hole cladding head 2 advances, when the end of the detection rod 3 touches the inner wall of the blind hole 1, the detection rod 3 retracts along the guiding tube 6 until the sensor 9 detects the detection rod 3 and transmits a signal to the control system, thereby stopping the further advancement of the inner hole cladding head 2. Among them, when the sensor 9 detects the signal, the detection rod 3 is still located in front of the inner hole cladding head 2 at this time, that is, there is still a gap between the inner hole cladding head 2 and the inner wall of the blind hole 1 after it stops advancing, thereby avoiding collision.

[0031] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. An anti-collision detection device for an inner hole cladding head, characterized in that: It includes a detection rod and a sensor. The front end of the detection rod is located in front of the inner hole cladding head. A guiding tube is sleeved on the rear end of the detection rod. The detection rod and the guiding tube are in sliding fit. The guiding tube is connected to the inner hole cladding head through a fixing plate. A spring connected to the guiding tube is sleeved on the outer side of the detection rod. A protective tube is connected to the end of the guiding tube away from the detection rod. A rear-end sensor for detecting the detection rod is arranged in the protective tube.

2. The anti-collision detection device for an inner hole cladding head according to claim 1, characterized in that: The detection rod includes a front detection section, a middle guiding section and a rear detection section. The diameters of both the front detection section and the rear detection section are smaller than that of the middle guiding section. A limiting plate cooperating with the end of the middle guiding section is sleeved on the outer side of the front detection section. The limiting plate is connected to the inner hole cladding head. The middle guiding section is in sliding fit with a guiding sleeve. The spring is sleeved on the outer side of the rear detection section. The sensor detects the end of the rear detection section.

3. The anti-collision detection device for the inner hole cladding head according to claim 1, wherein: The protective tube is connected to the guiding tube through a connecting tube. The connecting tube is detachably connected to both the protective tube and the guiding tube.

4. The anti-collision detection device for the inner hole cladding head according to claim 1, characterized in that: A limiting ring and a limiting plate are sleeved on the outer side of the detection rod. The detection rod and the limiting plate are in sliding fit. The limiting plate is connected to the inner hole cladding head.

5. The anti-collision detection device for an inner hole cladding head according to claim 1, characterized in that: A sealing ring is arranged between the guiding tube and the detection rod.

6. The anti-collision detection device for the inner hole cladding head according to claim 1, wherein: The sensor is a proximity switch or optoelectronic.

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