CN112144054B - Laser cladding cooling device with fin type cooling fins - Google Patents

Abstract

The invention discloses a laser cladding cooling device with fin type cooling fins, which comprises a cooling disc of a workpiece capable of dissipating heat, a clamp and a heat dissipation water tank, wherein the cooling disc is provided with a plurality of fins; a water tank cooling water inlet channel and a water tank cooling water outlet channel are arranged on the side wall of the heat dissipation water tank; the cooling disc of the heat-radiating workpiece comprises a disc-shaped body and fin-type cooling fins; the front surface of the disc-shaped body is provided with a workpiece arranging part at the middle position, two annular cooling water channels are concentrically arranged at the periphery of the workpiece arranging part, and the disc-shaped body is respectively provided with a cooling disc cooling water inlet channel and a cooling disc cooling water outlet channel along the radial direction; fin type radiating fins are arranged on the back surface of the disc-shaped body; the protective cover is sealed at the open end of the radiating water tank and is wrapped outside the disc-shaped body, and a through hole a is formed in the middle of the protective cover; the through hole a is opposite to the workpiece placing part, and more than two clamps are uniformly arranged on the outer side of the protective cover. Therefore, the invention can comprehensively and efficiently dissipate heat and cool the substrate (workpiece) and improve the processing quality of the laser cladding formed part.

Description

Laser cladding cooling unit with finned heat sink

technical field

The invention relates to the field of laser cladding, in particular to a high-efficiency cooling device for laser cladding, which is suitable for laser cladding molding of fine-grain structure parts and thin-walled parts.

Background technique

Laser cladding, also known as laser cladding or laser cladding, is a technology that subverts the evolution of traditional manufacturing concepts to modify the surface. It feeds the cladding layer material onto the surface of the substrate by adding powder in different forms, and the temperature of the powder rises and melts after being irradiated by the laser, and falls into the molten pool formed on the surface of the substrate due to the high temperature of the laser. After air-cooling and solidification, the surface cladding layer exhibits good metallurgical bonding with the substrate. Through this method of adding a surface coating with required performance on the surface of the base body, not only can the parts meeting the performance requirements be obtained, but also the manufacturing cycle and cost can be greatly shortened. Laser cladding fully combines many disciplines such as optics, electricity, materials science and mechanical automation. At present, this technology is widely used in the aerospace field, and it can reliably and quickly repair some important parts without affecting the characteristics of the parts themselves.

During the laser cladding process, in order to ensure the quality of the cladding, the temperature of the substrate and the workpiece must be controlled within a certain range. Unlike traditional processing methods, laser cladding cannot use coolant to directly cool the workpiece. During the cladding process, the heat of the substrate and the workpiece is too late to dissipate, resulting in heat accumulation, which will cause the substrate to warp, prolong the solidification time of the molten pool, and seriously affect the molding quality of the workpiece. The accumulation of heat will also lead to the slow accumulation of the size of the workpiece in the Z-axis direction or even failure to collapse. In order to avoid these problems, laser cladding cooling device is particularly important.

In the past, the cooling of the cladding layer and the substrate was mostly realized by reducing the temperature at the laser nozzle and optimizing the process parameters, and there were few studies on cooling the substrate to achieve cooling and heat dissipation.

Northeastern University Wang Song, Yu Tianbiao and others applied for a laser cladding cooling device (patent number: CN201710227675.3), which is equipped with a spiral water-cooled tube near the laser processing head and the nozzle of the laser processing head. and the helical tube going vertically upwards. Through the circulation of cooling water in the spiral water-cooled tube, the workpiece is radiated and cooled. The use of this device can cool down the workpiece during the laser cladding process, but there are several shortcomings: First, the temperature of the laser processing head is high. The water temperature will rise accordingly, and the effect of cooling the workpiece through heat exchange is not obvious; the second is that the cooling water pipe does not directly contact the workpiece or the substrate, but has a certain distance from the workpiece, and the cooling effect of the workpiece is not obvious; the third is near the laser processing head. While the cooling pipe cools and dissipates heat from the workpiece, it may affect the processing position of laser cladding.

Shandong University of Science and Technology Qiu Pengyuan, Wu Yumei and others proposed a utility model patent named a laser cladding cooling and protection device (patent number: CN201721376156.5). The device has an S-shaped cooling water channel at the bottom of the substrate. Before processing Introduce argon gas to discharge the air in the cooling and protection device, protect the workpiece during processing, and prevent oxidation. The substrate is placed at the bottom of the cooling and protection device. Through the water pump, the circulating water enters the S-shaped cooling water channel to take away the heat and heat the bottom of the substrate. Cooling, cooling fins are installed in the circulating water circuit to dissipate heat from the circulating water. During the laser cladding process, the device can have a certain heat dissipation and cooling effect on the substrate, and can protect the workpiece from being oxidized, but there are two shortcomings: one is that the device dissipates heat through the S-shaped cooling channel at the bottom of the substrate, and the side of the substrate dissipates heat. There is no corresponding cooling structure, the cooling water is circulating water, and the cooling water that takes away the heat of the substrate flows out of the cooling water channel and only dissipates heat through the cooling fins. There is no corresponding cooling equipment. If the laser cladding workpiece has a long processing cycle, the substrate will be damaged. The cooling effect will be weakened; the second is that the substrate is placed at the bottom of the cooling and protection device. During laser processing, the structure and size of the cooling and protection device will affect the movement of the powder head, so the size and structure of the workpiece will be greatly limited.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention proposes a laser cladding cooling device with finned cooling fins. Through this device, the substrate (workpiece) can be fully and efficiently dissipated and cooled, and the processing quality of laser cladding molded parts can be improved; in addition, the device has a simple structure and safe operation, and has no effect on the movement path of the laser processing head, and basically does not limit the processing to be processed Workpiece size.

For realizing above-mentioned technical purpose, the present invention will take following technical scheme:

A laser cladding cooling device with a finned cooling fin, comprising a protective cover, a cooling plate capable of dissipating heat, a fixture, and a cooling water tank. in:

The heat dissipation water tank is a cylindrical structure with one end open and the other end closed; and the side wall of the heat dissipation water tank is provided with a water tank cooling water inlet channel and a water tank cooling water outlet channel;

The heat-dissipating workpiece cooling plate includes a disc-shaped body and fin-type heat sinks; the disc-shaped body is installed at the open end of the heat dissipation water tank, and the front of the disc-shaped body is provided with a workpiece placement part at the middle position, and the Two ring-shaped cooling water passages are concentrically arranged on the periphery of the workpiece placement part. The body of the disc-shaped body is provided with a cooling plate cooling water inlet channel and a cooling plate cooling water outlet channel respectively along the radial direction, while the back of the disc-shaped body is provided with the said finned heat sink;

The two annular cooling water channels are the inner cooling water channel on the inner side and the outer cooling water channel on the outer side. The inlet side of the outer cooling water channel is connected with the cooling water inlet channel of the cooling plate, and the outlet side is connected with the cooling water outlet channel of the cooling plate; The inlet side of the waterway communicates with the inlet side of the outer cooling waterway through the connecting channel a, and the outlet side of the inner cooling waterway communicates with the outlet side of the outer cooling waterway through the connecting channel b;

The protective cover is sealed to the open end of the heat dissipation water tank and outsourced to the disc-shaped body, and a through hole a is opened in the middle of the protective cover;

The through hole a is directly opposite to the workpiece placement part, and on the outside of the protective cover, there are more than two fixtures evenly arranged along the circumference of the through hole a; the cooperative work of each fixture can clamp and fix the workpiece placed on the workpiece placement part .

Further, the fin-type heat sink is integrally embedded in the blind hole provided close to the bottom of the heat dissipation water tank, including the middle fixing part and the heat sink evenly arranged outside the middle fixing part;

The heat sink is a streamlined fork-shaped member, including a heat sink body and more than two branch-shaped heat sinks; each branch-shaped heat sink is arranged at the end of the heat sink body and bifurcates along the length extension direction of the heat sink body and formed;

One end of the middle fixing part is fixed to the back of the disc-shaped body, and the other end is at a certain distance from the bottom of the cooling water tank.

Further, the end of the heat sink has two branch-shaped heat sinks.

Further, the middle fixing part is a hollow cylindrical structure.

Further, the number of the water tank cooling water inlet channel and the water tank cooling water outlet channel is two;

The two water tank cooling water inlet channels are respectively the water tank cooling water inlet channel a and the water tank cooling water inlet channel b; the two water tank cooling water outlet channels are respectively the water tank cooling water outlet channel a and the water tank cooling water outlet channel b;

The water tank cooling water outlet channel a and the water tank cooling water outlet channel b are symmetrically arranged on the side wall of the cooling water tank close to the bottom of the tank;

The water tank cooling water inlet channel a and the water tank cooling water inlet channel b are symmetrically arranged on the side wall of the cooling water tank close to the open end.

Further, both the connecting channels a and b are gaps between the cooling water channels provided on the partition wall between the inner cooling water channel and the outer cooling water channel.

Further, the workpiece placement part is a workpiece groove.

Further, the workpiece groove is arranged in a rectangular shape, and the inner and outer cooling channels are arranged in a rectangular shape, and the through hole a is also arranged in a rectangular shape.

Further, the number of the clamps is 4, which are arranged one by one at the corners of the through hole a; the clamps include a fixing part and a clamping part; The penetrating protective cover is fixed on the partition wall between the inner and outer cooling channels; the clamping part is raised relative to the flat plate-shaped fixing part and is in the shape of a flange.

According to above-mentioned technical scheme, with respect to prior art, the present invention has following advantage:

1. In the present invention, a workpiece placement part is provided in the middle of the front of the disc-shaped body, and two cooling water passages are set up around the workpiece placement part. Bottom heat and forced cooling can realize all-round and efficient cooling and heat dissipation of the substrate (workpiece), which solves the difficult problem of reducing the temperature of the workpiece to a certain extent.

2. The finned heat sink of the present invention has a large surface area, so it has a large contact area with cooling water. Compared with the existing heat sink, the finned heat sink can have a better cooling and heat dissipation effect at the same time. At the same time, the present invention ensures the flow rate while increasing the contact area, that is, the heat sink is designed as a streamlined heat sink (fork-shaped member, including the heat sink body and more than two branch-shaped heat sinks; each branch-shaped heat sink It is arranged at the end of the heat sink body and bifurcated along the length extension direction of the heat sink body), which is conducive to the flow of cooling water in the heat dissipation water tank and is more conducive to heat dissipation.

3. The structure of the present invention has no influence on the movement path of the laser processing head, and also does not limit the size of the workpiece to be processed. While dissipating heat, the present invention can fix the substrate through the clamp, effectively improving the molding quality of the workpiece and ensuring the cladding efficiency.

4. The invention has the advantages of simple structure, convenient operation, low manufacturing cost, good effect on controlling the temperature of substrates and workpieces, and is suitable for popularization and use.

Description of drawings

Fig. 1 is a structural diagram of a forced cooling device of the present invention;

Fig. 2 is the structural diagram of the protective cover of the forced cooling device of the present invention;

Fig. 3 is the top view of the protective cover of the forced cooling device of the present invention;

Fig. 4 is the structural diagram of the cooling plate of the forced cooling device of the present invention;

Fig. 5 is the top view of the cooling plate of the forced cooling device of the present invention;

Fig. 6 is the top view of the finned heat sink of the forced cooling device of the present invention;

Fig. 7 is the structural diagram of the cooling water tank of the forced cooling device of the present invention;

Fig. 8 is the front view of the cooling water tank of the forced cooling device of the present invention;

Fig. 9 is a clamp structure diagram of the forced cooling device of the present invention;

Fig. 10 is a front view of the fixture of the forced cooling device of the present invention.

Among the figure, 1, cooling plate; 2, clamp; 3, protective cover; 4, cooling water tank; 5, fin type heat sink; 61, fastening bolt; 62, threaded hole a; 63, threaded hole b; 64, thread Hole d; 7, square hole; 8, side notch; 91, fastener; 92, fixing hole a; 9-1, fixing part of fixture; 9-2, clamping part of fixture; 10, cooling plate cooling water Inlet channel; 11. Cooling plate cooling water outlet channel; 12. Fixing hole b; 13. Outer cooling channel; 14. Inner cooling channel; 15. Gap between cooling channels; 16. Hollow cylinder; 17. Heat sink; 17-1 1. Heat sink body; 17-2; Branched heat sink; 18. Cooling water inlet passage of heat dissipation water tank; 19. Cooling water outlet passage of heat dissipation water tank; 20. Workpiece groove.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. The relative arrangements, expressions and numerical values of components and steps set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification. In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other examples of the exemplary embodiment may have different values.

For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe the The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or configurations. under other devices or configurations". Thus, the exemplary term "above" can encompass both an orientation of "above" and "beneath". The device may be positioned in other different ways (rotated 90 degrees or at other orientations) as well.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, for the purpose of convenience of description, the vertical direction, the horizontal direction and the longitudinal direction are two perpendicular directions, and the two vertical directions are respectively the up and down directions.

As shown in Figures 1 to 10, the laser cladding cooling device with finned heat sinks according to the present invention includes a protective cover, a cooling plate capable of dissipating heat, a fixture, and a cooling water tank. Among them, the protective cover, fixture and heat dissipation water tank are made of stainless steel, and the cooling plate of the workpiece that can dissipate heat is made of pure copper.

The heat dissipation water tank is a cylindrical structure with one end open and the other end closed; and the side wall of the heat dissipation water tank is provided with a water tank cooling water inlet channel and a water tank cooling water outlet channel;

The heat-dissipating workpiece cooling plate includes a disc-shaped body and fin-type heat sinks; the disc-shaped body is installed at the open end of the heat dissipation water tank, and the front of the disc-shaped body is provided with a workpiece placement part at the middle position, and the Two ring-shaped cooling water passages are concentrically arranged on the periphery of the workpiece placement part. The body of the disc-shaped body is provided with a cooling plate cooling water inlet channel and a cooling plate cooling water outlet channel respectively along the radial direction, while the back of the disc-shaped body is provided with the said The finned heat sink; the finned heat sink is fixed to the center of the back of the disc-shaped body through a welding process.

The two annular cooling water channels are the inner cooling water channel on the inner side and the outer cooling water channel on the outer side. The inlet side of the outer cooling water channel is connected with the cooling water inlet channel of the cooling plate, and the outlet side is connected with the cooling water outlet channel of the cooling plate; The inlet side of the waterway communicates with the inlet side of the outer cooling waterway through the connecting channel a, and the outlet side of the inner cooling waterway communicates with the outlet side of the outer cooling waterway through the connecting channel b.

In order to facilitate the flow of cooling water in the heat dissipation water tank and improve heat dissipation efficiency, the fin-type heat sink according to the present invention is integrally embedded in the blind hole provided close to the bottom of the heat dissipation water tank. The structure is shown in Figure 6, including The middle fixing part and the cooling fins evenly arranged on the outside of the middle fixing part; the said cooling fins are streamlined fork-shaped components, including the cooling fin body and more than two branched cooling fins. Each branch-shaped cooling fin is arranged at the end of the cooling fin body and is formed by bifurcating along the length extension direction of the cooling fin body; one end of the middle fixing part is fixed to the back of the disc-shaped body, and the other end is connected to the back of the cooling water tank. There is a certain distance from the bottom of the box. The intermediate fixing part described in the accompanying drawings is a hollow cylindrical structure.

The protective cover is sealed to the open end of the heat dissipation water tank and outsourced to the disc-shaped body, and a through hole a is opened in the middle of the protective cover, and the cooling water inlet channel of the cooling plate and the cooling water outlet channel of the cooling plate are opened on the side. There are notches at the positions; the size of the notches is slightly larger than the cooling plate cooling water inlet channel/cooling plate cooling water outlet channel at the corresponding position, so that the cooling plate cooling water inlet channel and the cooling plate cooling water outlet channel are exposed. Connect with the external cooling water delivery pipeline.

The protective cover, the disc-shaped body, and the open end face of the cooling water tank are connected into one body through the bolts fitted in the through threaded holes, and a gasket is installed at the joint for sealing.

The through hole a is directly opposite to the workpiece placement part, and the size of the through hole a matches the size of the workpiece placement part. In addition, on the outside of the protective cover, there are more than two fixtures evenly arranged along the circumference of the through hole a; The cooperative work can clamp and fix the workpiece placed on the workpiece placement part.

In order for the cooling water to enter the cooling water tank, the number of the water tank cooling water inlet channel and the water tank cooling water outlet channel of the present invention is 2; the two water tank cooling water inlet channels are respectively the water tank cooling water inlet channel a, Water tank cooling water inlet channel b; two water tank cooling water outlet channels are respectively water tank cooling water outlet channel a and water tank cooling water outlet channel b; water tank cooling water outlet channel a and water tank cooling water outlet channel b are symmetrically arranged on the cooling water tank On the side wall against the bottom of the tank; the water tank cooling water inlet channel a and the water tank cooling water inlet channel b are symmetrically arranged on the side wall of the cooling water tank close to the open end.

In order to facilitate the cooling water entering the disc-shaped body to quickly and synchronously flow into the inner cooling water channel and the outer cooling water channel, the connecting channels a and b in the present invention are both arranged on the partition wall between the inner cooling water channel and the outer cooling water channel The gap between the cooling channels.

Generally, the shape of the workpiece is rectangular. Therefore, in the present invention, the workpiece groove is arranged in a rectangular shape. At this time, the inner and outer cooling channels are arranged in a rectangular ring shape, and the through hole a is also arranged in a rectangular shape. At the same time, the number of the clamps is 4, which are arranged one by one at the corners of the through hole a; the clamps include a fixing part and a clamping part; The parts pass through the protective cover and are fixed on the partition wall between the inner and outer cooling water channels; the clamping part is raised relative to the flat plate-shaped fixing part and is in the shape of a flange.

A specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

Example

The present invention proposes an all-round and efficient forced cooling device for laser cladding substrates. Its overall structure is as shown in Figure 1. The cooling device includes a cooling plate 1, a fixture 2, a protective cover 3, and a cooling water tank 4. And finned heat sink 5. The protective cover 3 is threadedly connected with the cooling plate 1 and the heat dissipation water tank 4, and a gasket is installed at the junction; The size of the square hole 7 set at the center of the main body of the protective cover 3 is the same as that of the base plate, and the side is provided with a side gap 8 slightly larger than the cooling water inlet channel 10 and the cooling water inlet channel 11; the four corners of the square hole 7 are provided with threaded holes d12 for easy fastening The bolt 61 passes through to install the fixture 2, and the protective cover 3 on the left and right sides of the square hole 7 is provided with a threaded hole a62 to connect the cooling plate 1 and the cooling water tank 4 through the fastening bolt 61; the center of the main body of the cooling plate 1 is provided with a square workpiece The groove 20 has the same size as the base plate. Two rounded rectangular cooling water channels are provided on the outside of the workpiece groove 20, which are respectively the outer cooling water channel 13 and the inner cooling water channel 14. The partition walls of the outer cooling water channel 13 and the inner cooling water channel 14 are provided with gaps 15 between the cooling water channels. To connect them, cooling water inlet channel 10 and cooling water outlet channel 11 are set on the side of cooling plate 1, fixing holes b12 are set at the four corners between the two cooling water channels, and the center line of fixing hole b12 is set at the corresponding position of protective cover 3. The center lines of a92 coincide; the fasteners 91 are used to pass through the fixing part 9-1, the fixing hole a92, and the fixing hole b12 of the fixture in order to realize the fixing of the fixture. Threaded holes b63 are provided on the left and right sides of the workpiece groove 20 to facilitate fastening bolts 61 to pass through the connecting cooling water tank 4; the through holes on both sides of the upper part of the cooling water tank 4 are cooling water inlet passages 18, and the through holes on both sides of the lower part are cooling water outlet passages 19. Threaded holes d64 are provided on the left and right sides of the top of the cooling water tank 4 for connecting the protective cover and the cooling plate. To sum up, the threaded hole a62, the threaded hole b63, and the threaded hole d64 correspond one by one to form a through threaded hole, which facilitates the installation of fastening bolts, so that the protective cover 3, the cooling plate 1 and the cooling water tank 4 are connected into one body.

The specific implementation mode and function of each component of the present invention are described in detail as follows:

Before laser cladding, the substrate is placed in the workpiece groove 20 at the center of the main body of the cooling plate 1, the protective cover 3 is covered, and a gasket is added at the joint, and the substrate is clamped by the clamp 2 so that it cannot be moved to ensure melting Covering quality; there is no specific restriction on the threaded hole 6 on the protective cover 3; there is no specific restriction on the threaded hole 12 of the installation fixture, which can be selected according to the thickness of the cooling water channel 13, and the depth of the threaded hole 12 cannot exceed the thickness of the cooling plate 1; the workpiece groove Cooling water (0°C tap water can be selected) is passed through 13 around the outer cooling water channel.

The middle of the finned heat sink 5 is a hollow cylinder 16, and 24 heat sinks 17 are distributed at equal angular intervals in the circumferential direction; the finned heat sink 5 and the bottom of the cooling plate 1 are connected together by a welding process, and the finned heat sink The fin 5 is inserted into the cooling water tank 4, and the cooling water is passed into it. The cooling fin 17 is in contact with the flowing cooling water. The surface area of the cooling fin 17 is large, so it is beneficial to heat dissipation and cooling. In this example, the outer diameter of the finned cooling fin 5 is slightly larger than the length of the substrate. .

The heat dissipation water tank 4 is cylindrical, and the central position of the main body is a blind hole. The inner diameter of the blind hole is slightly larger than the outer diameter of the finned heat sink 5, and the depth is slightly larger than the height of the finned heat sink 5. Cooling water inlet 18 and outlet channel 19, due to the special structure of the finned heat sink 5, in order to ensure the efficiency of cooling water inflow and outflow, cooling water inlet 18 and outlet channel 19 are provided on both sides of the cooling water tank 4, and the channels on both sides are symmetrical Arrangement: The position and size of the threaded holes 6 on the left and right sides of the top of the cooling water tank should be strictly consistent with those of the protective cover.

Installation and cooling process of the present invention:

Connect the finned heat sink 5 with the cooling plate 1 by welding, insert it into the cooling water tank 4 after connection, and place the protective cover 3 on the upper part of the cooling plate 1; Connect, install gasket at joint, install gasket between protective cover 3 and cooling water tank of cooling plate 1, prevent cooling water from overflowing; The inlet 10 outlet 11 of cooling water on the side of cooling plate 1 is equipped with joints and water pipes, and links to each other with the cooling water tank.

Before laser cladding, the substrate is placed in the workpiece groove 20 of the cooling plate 1, and the fixture 2 is installed through the threaded hole 12 to fix the substrate. The cooling water in the cooling plate 1 enters the cooling channel 13 outside the cooling plate through the channel inlet 10, and then passes The gap 15 between the two cooling water channels flows into the inner cooling water channel 14, and the cooling water takes away the heat after fully contacting the side of the substrate, and flows out through the outlet 11 of the cooling water channel; after the finned heat sink 5 is inserted into the cooling water tank 4, the cooling water passes through the channel inlet 18 enters the heat dissipation water tank 4, takes away the heat after fully contacting the heat sink 17, and flows out through the outlet 19 of the cooling water channel; after ensuring that the cooling water continues to flow in and out, the cladding begins, and the cooling water must be continuously fed during the entire processing process , it can be stopped after the cladding is completed.

Claims (8)

1. The utility model provides a laser cladding cooling device with fin formula fin, its characterized in that, including work piece cooling disc, anchor clamps, the heat dissipation water tank that can dispel the heat, wherein: the heat dissipation water tank is of a cylindrical structure with one end open and the other end closed; a water tank cooling water inlet channel and a water tank cooling water outlet channel are arranged on the side wall of the heat dissipation water tank;

the cooling disc comprises a disc-shaped body and fin-type cooling fins; the disc-shaped body is arranged at the open end of the heat radiation water tank, the front surface of the disc-shaped body is provided with a workpiece placing part at the middle position, two annular cooling water channels are concentrically arranged at the periphery of the workpiece placing part, a cooling disc cooling water inlet channel and a cooling disc cooling water outlet channel are respectively arranged in the disc-shaped body along the radial direction, and the back surface of the disc-shaped body is provided with the fin-type cooling fins;

the two annular cooling water channels are respectively an inner cooling water channel positioned on the inner side and an outer cooling water channel positioned on the outer side, the inlet side of the outer cooling water channel is communicated with the cooling water inlet channel of the cooling disc, and the outlet side of the outer cooling water channel is communicated with the cooling water outlet channel of the cooling disc; the inlet side of the inner cooling water channel is communicated with the inlet side of the outer cooling water channel through a connecting channel a, and the outlet side of the inner cooling water channel is communicated with the outlet side of the outer cooling water channel through a connecting channel b;

the protective cover is sealed at the open end of the radiating water tank and is wrapped outside the disc-shaped body, and a through hole a is formed in the middle of the protective cover;

the through hole a is opposite to the workpiece placing part, and more than two clamps are uniformly arranged on the outer side of the protective cover along the circumferential direction of the through hole a; the work piece arranged on the work piece arranging part can be clamped and fixed by the cooperative work of all the clamps;

the fin type radiating fins are integrally embedded in blind holes formed in the radiating water tank and close to the bottom of the tank, and comprise middle fixing parts and radiating fins which are uniformly arranged on the outer sides of the middle fixing parts and distributed in an annular array;

the radiating fin is a streamline fork-shaped component and comprises a radiating fin body and more than two branch-shaped radiating fins; each branch-shaped radiating fin is arranged at the tail end of the radiating fin body and is formed by branching along the length extending direction of the radiating fin body;

one end of the middle fixing part is fixed with the back of the disc-shaped body, and a certain distance is reserved between the other end of the middle fixing part and the bottom of the heat dissipation water tank, so that cooling water can circulate conveniently.

2. The laser cladding cooling device with fin heat sink as claimed in claim 1, wherein the fin has two branch fins at its end.

3. The laser cladding cooling device with fin type heat sink as claimed in claim 2, wherein the intermediate fixing portion is a hollow cylindrical structure.

4. The laser cladding cooling device with the fin type cooling fin as claimed in claim 2, wherein the number of the water tank cooling water inlet channels and the water tank cooling water outlet channels is 2;

the 2 water tank cooling water inlet channels are respectively a water tank cooling water inlet channel a and a water tank cooling water inlet channel b;

the 2 water tank cooling water outlet channels are respectively a water tank cooling water outlet channel a and a water tank cooling water outlet channel b;

the water tank cooling water outlet channel a and the water tank cooling water outlet channel b are symmetrically arranged on the side wall of the heat dissipation water tank close to the bottom of the tank;

the water tank cooling water inlet channel a and the water tank cooling water inlet channel b are symmetrically arranged on the side wall of the radiating water tank close to the open end.

5. The laser cladding cooling device with fin cooling fins of claim 2, wherein the connecting channels a and b are cooling water channel gaps arranged on a partition wall between the inner cooling water channel and the outer cooling water channel.

6. The laser cladding cooling apparatus with fin cooling fins of claim 1, wherein said workpiece placement portion is a workpiece slot.

7. The laser cladding cooling device with fin type cooling fins as claimed in claim 6, wherein the workpiece groove is rectangular, the inner cooling water channel and the outer cooling water channel are both rectangular, and the through hole a is also rectangular.

8. The laser cladding cooling device with the fin type heat sink as claimed in claim 7, wherein the number of the clamps is 4, and the clamps are arranged at the corner positions of the through holes a in a one-to-one correspondence manner;

the clamp comprises a fixing part and a clamping part; the fixing part is integrally flat and penetrates through the protective cover through the fastening part to be fixed on the partition wall between the inner cooling water channel and the outer cooling water channel; the holding portion is raised from the flat plate-like fixing portion and has a flange shape.

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