Multi-layer composite cold spraying device for new energy automobile cooling fins and spraying method of multi-layer composite cold spraying device

Abstract

The invention belongs to the technical field of cold spraying, and discloses a new energy automobile cooling fin multi-layer composite cold spraying device and a spraying method thereof.The new energy automobile cooling fin multi-layer composite cold spraying device comprises a supporting plate, a cold spraying treatment part is arranged at the top of the supporting plate, a cold spraying supply part is arranged on one side of the cold spraying treatment part in a communicating mode, and a positioning feeding part is fixedly connected to the top of the supporting plate; a vertical plate is fixedly connected to the top of the supporting plate, and a rotating conduction shaft is rotationally installed in the vertical plate. According to the cold spraying device, the two groups of symmetrically distributed cold spraying treatment parts are utilized, and the cooperation of the rotating conduction shaft, the driving mechanism, the adsorption grabbing assembly and the negative pressure mechanism is utilized, so that the cooling fins at the two ends of the adsorption grabbing assembly are adsorbed and fixed in the actual cold spraying process, and on one hand, the two groups of adsorbed and fixed cooling fins are continuously turned over; and on the other hand, the cold spraying treatment part matched with the cooling fins is utilized, double-face rapid cold spraying treatment is achieved, and the cold spraying treatment efficiency is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the field of cold spray technology, and specifically relates to a multi-layer composite cold spray device for a new energy vehicle radiator and a spraying method thereof. Background Art

[0002] The multi-layer composite cold spray device for new energy vehicle heat sinks is used to spray multi-layer composite coatings on the surface of the heat sink to improve the heat dissipation effect. It uses cold spray technology to spray multiple materials on the heat sink in layers, enhancing the thermal conductivity and durability of the heat sink, effectively improving thermal management performance, and ensuring temperature control of batteries and other core components.

[0003] The multi-layer composite cold spray device for new energy vehicle heat sinks in the prior art usually adopts a cold spray pipeline spraying and powder supply mechanism and a high-pressure airflow mechanism to cold spray powder onto the surface of the heat sink during use. However, during the cold spray treatment of the heat sink, the double-sided cold spray treatment of the double-sided heat sink is not effective. In particular, the cold spray treatment of batch heat sinks is cumbersome in actual operation, and the continuous cold spraying on the front and back sides is complicated, resulting in poor overall use effect. Summary of the Invention

[0004] The object of the present invention is to provide a multi-layer composite cold spray device and a spraying method for a new energy vehicle radiator to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a multi-layer composite cold spray device for a new energy vehicle heat sink and a spraying method thereof, comprising a support plate, a cold spray processing portion is provided on the top of the support plate, a cold spray supply portion is connected to one side of the cold spray processing portion, the top of the support plate is fixedly connected to a positioning and loading portion, the top of the support plate is fixedly connected to a vertical plate, a rotating conductive shaft is rotatably installed in the vertical plate, an adsorption and grabbing component is fixedly sleeved on the outer surface of the rotating conductive shaft, an opening and closing control portion is provided on the top of the adsorption and grabbing component, a negative pressure mechanism is fixedly provided on one side of the vertical plate, when the adsorption and grabbing component rotates to the positioning and loading portion, the positioning and grabbing of the heat sink is completed by the negative pressure mechanism, and when the adsorption and grabbing component drives the heat sink to rotate to two groups of cold spray processing portions, double-sided cold spraying is completed by the negative pressure mechanism; The rotating conducting shaft includes a shaft body, a suction port and a side port. The suction port is opened on the end face of the shaft body, the side port is opened on the outside of the shaft body, and the side port is connected to the suction port. The end of the suction port is connected to the negative pressure mechanism, and the side port is connected to the adsorption and grabbing component.

[0006] Preferably, the adsorption and grabbing assembly includes a sleeve plate, an adsorption frame and an internal cavity. The sleeve plate is fixedly sleeved on the outside of the shaft body, the adsorption frame is symmetrically fixed on both ends of the sleeve plate, and the internal cavity is symmetrically opened inside the sleeve plate. The internal cavity is connected with the adsorption frame, and the internal cavity corresponds to and is connected with the side port one by one.

[0007] Preferably, the opening and closing control part includes an electric push rod three, a sealing block and a connecting port. The connecting port is opened in the sleeve plate and connected to the internal cavity. The connecting port passes through the upper and lower surfaces of the sleeve plate. The sealing block is movably sleeved in the connecting port. The electric push rod three is fixed to the top of the sleeve plate through a bracket. The movable end of the electric push rod three is fixedly connected to the sealing block, and a through hole is provided in the middle of the sealing block, and the connection between the internal cavity and the side port is controlled by the through hole.

[0008] Preferably, the negative pressure mechanism includes a vacuum pump and a connecting cover, the suction end of the vacuum pump is connected to the connecting cover, the connecting cover is fixed on the vertical plate, the connecting cover is sleeved on the outside of one end of the shaft body, and the connecting cover is connected to the suction port, and the driving mechanism controls the rotation of the shaft body.

[0009] Preferably, the positioning and loading part includes a loading frame and an electric push rod 1, the loading frame is located above the support plate, and the electric push rod 1 drives the loading frame to move horizontally.

[0010] Preferably, a bottom opening is opened at the top of the support plate, and a positioning frame is fixedly connected to the bottom of the support plate.

[0011] Preferably, the cold spray processing part includes a cold spray box and a nozzle, and the cold spray supply part includes a supply frame and a conduction frame, the supply frame is fixed on the cold spray box, the conduction frame is fixed on the outer end of the cold spray box, the supply frame is connected with the conduction frame, the conduction frame is connected with the nozzle, and the nozzle is fixed in the cold spray box. There are two cold spray boxes, and a gap is provided between the two cold spray boxes. A powder supply mechanism and a high-pressure airflow mechanism are provided in the supply frame, and the supply frame sprays high-pressure powder through the conduction frame and the nozzle.

[0012] Preferably, the collection assembly includes a collection frame, a filter plate, an exhaust fan and an adapter port. The collection frame is located above the cold spray box. The collection frame is connected to the cold spray box through a suction pipe. The adapter port is opened in the collection frame. The filter plate is detachably mounted in the adapter port. A filter mesh is provided on the front of the filter plate. The exhaust fan is arranged in the collection frame.

[0013] Preferably, a sealing mechanism is provided inside the cold spray box, and the sealing mechanism includes an adapter groove, a sealing frame and an electric push rod 2. The adapter groove is opened inside the cold spray box, the electric push rod 2 is fixed in the adapter groove, the sealing frame is movably sleeved in the adapter groove, and the electric push rod 2 controls the movement of the sealing frame.

[0014] A spraying method for a multi-layer composite cold spray device for a new energy vehicle radiator comprises the following spraying steps: Step 1: Place the heat sink to be processed vertically in the positioning and loading part, keep the adsorption and grabbing component horizontal, start the positioning and loading part and push the heat sink to contact one end of the adsorption and grabbing component, start the negative pressure mechanism, and rotate the guide shaft to form a negative pressure inside the adsorption and grabbing component, and adsorb and fix the contacting heat sink; Step 2: Start the driving mechanism to rotate the rotating guide shaft, so that the adsorbed and fixed heat sink is flipped to between the two sets of cold spray treatment parts, and the cold spray supply part and the cold spray treatment part are started, so that the powder is high-pressure cold sprayed on both sides of the heat sink to complete the cold spraying; Step 3: While the above-mentioned cold spray treatment is being carried out, the next group of heat sinks are continuously placed into the positioning and loading section. As the positioning and loading section moves, the opening and closing control section controls the internal sealing and pressure maintenance of the adsorption and grabbing components at the cold spraying location, and the other opening and closing control section opens, activating the negative pressure mechanism, so that the heat sinks in the positioning and loading section are simultaneously adsorbed and fixed on the adsorption and grabbing components at the corresponding adsorption locations. Step 4: As the cold spray treatment is completed, the drive mechanism starts again and makes the adsorption and grabbing components flip over. The newly positioned and adsorbed heat sink flips to the cold spray treatment part. The heat sink after cold spraying returns to the side of the positioning and loading part. The corresponding opening and closing control part is opened. When the internal negative pressure is less, the adsorption and grabbing needs to be cancelled. The heat sink after cold spraying automatically falls out along the bottom mouth, completing the rotational directional discharging.

[0015] The beneficial effects of the present invention are as follows: (1) The present invention utilizes two groups of symmetrically distributed cold spray processing parts, and utilizes the cooperation of the rotating conductive shaft, the driving mechanism, the adsorption and grabbing assembly and the negative pressure mechanism to achieve adsorption and fixation of the heat sinks at both ends of the adsorption and grabbing assembly during the actual cold spray process. On the one hand, the two groups of adsorbed and fixed heat sinks are continuously flipped to complete the rapid alternating cold spray treatment of multiple groups of heat sinks. On the other hand, the cold spray processing part adapted to the heat sink is used to achieve double-sided rapid cold spray treatment, thereby greatly improving the efficiency of the cold spray treatment.

[0016] (2) The present invention utilizes the positioning loading part and the bottom port, and utilizes the intermittent rotation of the rotating guide shaft to realize the cold spray treatment of the heat sink on both sides in sequence during the flipping process. At the same time, it cooperates with the accurate and fast loading treatment of the positioning loading part to provide the accuracy and efficiency of adsorption and grasping. At the same time, it cooperates with the bottom port and the positioning frame, and cancels the adsorption and grasping through the opening and closing control part after the cold spray flipping, so as to realize the rapid positioning and blanking treatment. On the one hand, it improves the loading accuracy and speed, and on the other hand, it improves the discharge speed and collection effect, and further optimizes the effect of continuous cold spray treatment.

[0017] (3) The present invention utilizes the sealing mechanism inside the cold spray treatment unit in conjunction with the collection component to achieve internal sealing during the cold spray treatment, thereby preventing the powder from being dispersed into the air. After the powder is sprayed, the collection component is used for adsorption collection, and multiple groups of powder after cold spraying are sucked in and filtered for collection, thereby preventing the powder from being dispersed during the cold spray process and affecting the environment, and avoiding waste, thereby achieving quick collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a cross-sectional schematic diagram of the present invention; Figure 3 A schematic diagram of the positioning feeding portion of the present invention; Figure 4 It is a schematic diagram of the connection between the driving mechanism and the rotating conducting shaft of the present invention; Figure 5 It is a schematic diagram of the socket connection between the rotating guide shaft and the adsorption grabbing component of the present invention; Figure 6 It is a cross-sectional schematic diagram of the rotating guide shaft and the adsorption grabbing assembly of the present invention; Figure 7 This is a schematic diagram of the connection between the cold spray supply unit and the cold spray treatment unit of the present invention; Figure 8 Schematic diagram of the cold spray treatment unit and sealing mechanism of the present invention; Figure 9 Schematic diagram of the explosion of the collecting assembly of the present invention.

[0019] In the figure: 1. Support plate; 2. Positioning and loading part; 21. Loading frame; 22. Electric push rod one; 3. Cold spray processing part; 31. Cold spray box; 32. Nozzle; 4. Cold spray supply part; 41. Supply frame; 42. Conducting frame; 5. Collecting component; 51. Collecting frame; 52. Filter plate; 53. Exhaust fan; 54. Adapter port; 6. Bottom port; 7. Positioning frame; 8. Vertical plate; 9. Rotating conduction shaft; 91. Shaft body; 92. Suction port; 93. Side port; 10. Driving mechanism; 11. Vacuum pump; 12. Connecting cover; 13. Adsorption and grabbing component; 131. Sleeve plate; 132. Adsorption frame; 133. Internal cavity; 14. Opening and closing control part; 141. Electric push rod three; 142. Sealing block; 143. Connecting port; 15. Adapter groove; 16. Sealing frame; 17. Electric push rod two. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figures 1 to 9 As shown, the embodiment of the present invention provides a multi-layer composite cold spray device for a new energy vehicle heat sink and a spraying method thereof, comprising a support plate 1, a cold spray processing portion 3 is provided on the top of the support plate 1, a cold spray supply portion 4 is connected to one side of the cold spray processing portion 3, a positioning and loading portion 2 is fixedly connected to the top of the support plate 1, a vertical plate 8 is fixedly connected to the top of the support plate 1, a rotating guide shaft 9 is rotatably installed in the vertical plate 8, an adsorption and grabbing component 13 is fixedly sleeved on the outer surface of the rotating guide shaft 9, an opening and closing control portion 14 is provided on the top of the adsorption and grabbing component 13, and a side of the vertical plate 8 is fixed. A negative pressure mechanism is provided. When the adsorption and grabbing component 13 rotates to the positioning and loading part 2, the positioning and grabbing of the heat sink is completed by the negative pressure mechanism. When the adsorption and grabbing component 13 drives the heat sink to rotate to the two groups of cold spray processing parts 3, the double-sided cold spraying is completed by the negative pressure mechanism; the rotating conductive shaft 9 includes a shaft body 91, a suction port 92 and a side port 93. The suction port 92 is opened on the end face of the shaft body 91, and the side port 93 is opened on the outside of the shaft body 91, and the side port 93 is connected to the suction port 92. The end of the suction port 92 is connected to the negative pressure mechanism, and the side port 93 is connected to the adsorption and grabbing component 13.

[0022] Example 1: Place the heat sink to be processed vertically in the positioning and loading part 2, keep the adsorption and grabbing component 13 horizontal, start the positioning and loading part 2 and push the heat sink to contact one end of the adsorption and grabbing component 13, start the negative pressure mechanism, and the vacuum pump 11 sucks the air inside the adsorption and grabbing component 13 through the connecting cover 12, the suction port 92 and the side port 93, and forms a negative pressure inside the adsorption frame 132 through the internal cavity 133, so that the heat sink in contact is adsorbed and fixed to the end of the adsorption frame 132, and the drive is started. The mechanism 10 rotates the rotary guide shaft 9 by 180 degrees, so that the adsorbed and fixed heat sink is turned over to between the two groups of cold spray treatment parts 3, and the cold spray supply part 4 and the cold spray treatment part 3 are started, so that the powder is high-pressure cold sprayed on both sides of the heat sink to complete the cold spray; when the above-mentioned cold spray treatment is performed, the next group of heat sinks is continuously put into the positioning and loading part 2. As the positioning and loading part 2 moves, the sealing block 142 in the opening and closing control part 14 moves downward, and the through hole is disengaged and sealed from the internal cavity 133, so that the adsorbed After the hot pressing is completed, the hot pressing part 13 is opened, and the hot pressing part 13 is opened, and the hot pressing part 13 is opened, the hot pressing part 13 is opened, and the hot pressing part 13 is opened.

[0023] First, by utilizing two groups of symmetrically distributed cold spray processing parts 3, and utilizing the cooperation of the rotating conductive shaft 9, the driving mechanism 10, the adsorption and grabbing component 13 and the negative pressure mechanism, the heat sinks at both ends of the adsorption and grabbing component 13 are adsorbed and fixed during the actual cold spray process. On the one hand, the two groups of adsorbed and fixed heat sinks are continuously flipped to complete the rapid alternating cold spray processing of multiple groups of heat sinks. On the other hand, the cold spray processing part 3 adapted to the heat sink is used to achieve double-sided rapid cold spray processing, which greatly improves the efficiency of the cold spray processing.

[0024] In addition, by utilizing the positioning loading part 2 and the bottom port 6, and the intermittent rotation of the rotating guide shaft 9, the heat sink is subjected to double-sided cold spraying treatment in sequence during the flipping process, while cooperating with the precise and fast loading processing of the positioning loading part 2 to provide the accuracy and efficiency of adsorption and grasping. At the same time, by cooperating with the bottom port 6 and the positioning frame 7, the adsorption and grasping are cancelled through the opening and closing control part 14 after the cold spray flipping, thereby realizing rapid positioning and blanking processing. On the one hand, it improves the loading accuracy and speed, and on the other hand, it improves the discharge speed and collection effect, further optimizing the effect of continuous cold spray processing.

[0025] Example 2: Before the cold spray treatment, as the heat sink is flipped to the cold spray treatment part 3, the sealing mechanism is started, and the electric push rod 17 controls the movement of the sealing frame 16 so that the two sets of sealing frames 16 are set on the outside of both sides of the heat sink. After the cold spray treatment, the exhaust fan 53 in the collection component 5 is started, so that the powder remaining in the cold spray box 31 is sucked into the collection frame 51 and concentratedly filtered on the filter cloth of the filter plate 52 to complete the collection.

[0026] First, by utilizing the sealing mechanism inside the cold spray treatment unit 3 and cooperating with the collection component 5, internal sealing is achieved during the cold spray treatment to prevent the powder from being dispersed into the air. After the powder is sprayed, the collection component 5 is used for adsorption collection to absorb and filter the multiple groups of powder after cold spraying, thereby preventing the powder from being dispersed during the cold spraying process and affecting the environment, and avoiding waste, thereby achieving quick collection.

[0027] Among them, the adsorption and grabbing component 13 includes a sleeve 131, an adsorption frame 132 and an internal cavity 133. The sleeve 131 is fixedly sleeved on the outside of the shaft body 91, the adsorption frame 132 is symmetrically fixed at both ends of the sleeve 131, and the internal cavity 133 is symmetrically opened inside the sleeve 131. The internal cavity 133 is connected with the adsorption frame 132, and the internal cavity 133 corresponds to and is connected with the side port 93 one by one.

[0028] By contacting the heat sink at the opening of the adsorption frame 132 and combining it with the internal negative pressure environment, negative pressure adsorption and grasping are completed, and after adsorption and grasping, the front and back sides of the heat sink are avoided from being blocked, thereby improving the double-sided cold spray effect and avoiding clamping interference.

[0029] Among them, the opening and closing control part 14 includes an electric push rod 3 141, a sealing block 142 and a connecting port 143. The connecting port 143 is opened in the sleeve 131 and is connected to the internal cavity 133. The connecting port 143 passes through the upper and lower surfaces of the sleeve 131. The sealing block 142 is movably sleeved in the connecting port 143. The electric push rod 3 141 is fixed to the top of the sleeve 131 through a bracket. The movable end of the electric push rod 3 141 is fixedly connected to the sealing block 142, and a through hole is provided in the middle of the sealing block 142, and the communication between the internal cavity 133 and the side port 93 is controlled by the through hole.

[0030] The opening and closing control unit 14 realizes the connection and bypass control by controlling the position of the sealing block 142. When the sealing block 142 drives the internal through hole to move downward, the through hole and the internal cavity 133 are partially offset, so that the internal cavity 133 is sealed close to the adsorption frame 132, and the sealing pressure is maintained to maintain the adsorption and grasping. When the sealing block 142 moves upward so that the through hole continues to be offset and sealed with the internal cavity 133, the bottom of the connecting port 143 is opened at this time, and the air pressure of the internal cavity 133 near the adsorption frame 132 is restored, and the adsorption and clamping are cancelled. The two sets of opening and closing control units 14 control the two sides separately to ensure that the adsorption, grasping and discharge of the heat sinks on both sides do not interfere with each other.

[0031] Among them, the negative pressure mechanism includes a vacuum pump 11 and a connecting cover 12. The suction end of the vacuum pump 11 is connected to the connecting cover 12. The connecting cover 12 is fixed on the vertical plate 8. The connecting cover 12 is sleeved on the outside of one end of the shaft body 91, and the connecting cover 12 is connected to the suction port 92. The driving mechanism 10 controls the rotation of the shaft body 91.

[0032] The negative pressure mechanism is realized by vacuuming through the vacuum pump 11 to achieve adsorption and grasping, and the connecting cover 12 ensures that the shaft body 91 can be connected for suction during the flipping period.

[0033] The positioning and loading part 2 includes a loading frame 21 and an electric push rod 1 22 . The loading frame 21 is located above the support plate 1 , and the electric push rod 1 22 drives the loading frame 21 to move horizontally.

[0034] The positioning and pushing of the internal heat sink is achieved by utilizing the positioning and loading portion 2 , and the interference is achieved by cooperating with the adsorption frame 132 .

[0035] A bottom opening 6 is formed on the top of the support plate 1 , and a positioning frame 7 is fixedly connected to the bottom of the support plate 1 .

[0036] The bottom opening 6 and the positioning frame 7 are used to realize the directional blanking of the heat sink after cold spraying.

[0037] Among them, the cold spray processing part 3 includes a cold spray box 31 and a nozzle 32, and the cold spray supply part 4 includes a supply frame 41 and a conduction frame 42. The supply frame 41 is fixed on the cold spray box 31, and the conduction frame 42 is fixed on the outer end of the cold spray box 31. The supply frame 41 is connected with the conduction frame 42, and the conduction frame 42 is connected with the nozzle 32. The nozzle 32 is fixed in the cold spray box 31. There are two cold spray boxes 31, and a gap is provided between the two cold spray boxes 31. A powder supply mechanism and a high-pressure airflow mechanism are provided in the supply frame 41. The supply frame 41 sprays high-pressure powder through the conduction frame 42 and the nozzle 32.

[0038] The conventional cold spray operation is completed by the cold spray processing unit 3 and the cold spray supply unit 4.

[0039] Among them, the collection component 5 includes a collection frame 51, a filter plate 52, an exhaust fan 53 and an adapter 54. The collection frame 51 is located above the cold spray box 31. The collection frame 51 is connected to the cold spray box 31 through a suction pipe. The adapter 54 is opened in the collection frame 51. The filter plate 52 is detachably sleeved in the adapter 54. The front of the filter plate 52 is provided with a filter mesh. The exhaust fan 53 is arranged in the collection frame 51. The interior of the cold spray box 31 is provided with a sealing mechanism. The sealing mechanism includes an adapter groove 15, a sealing frame 16 and an electric push rod 2 17. The adapter groove 15 is opened in the interior of the cold spray box 31. The electric push rod 2 17 is fixed in the adapter groove 15. The sealing frame 16 is movably sleeved in the adapter groove 15. The electric push rod 2 17 controls the movement of the sealing frame 16.

[0040] By using the sealing frame 16 to fit the outer side of the heat sink, leakage from the heat sink is avoided. During the high-pressure cold spraying, the high-pressure airflow bypasses the collecting assembly 5 to achieve preliminary filtration of excess powder. After the cold spraying process, the exhaust fan 53 is used to further suck the powder in the cold spray box 31 to achieve further cleaning and collection.

[0041] A spraying method for a multi-layer composite cold spray device for a new energy vehicle radiator comprises the following spraying steps: Step 1: Place the heat sink to be processed vertically in the positioning and loading part 2, keep the adsorption and grabbing component 13 horizontal, start the positioning and loading part 2 and push the heat sink to contact one end of the adsorption and grabbing component 13, start the negative pressure mechanism, and rotate the guide shaft 9 to form a negative pressure inside the adsorption and grabbing component 13, and adsorb and fix the contacting heat sink; Step 2: Start the driving mechanism 10 to rotate the rotary guide shaft 9 180 degrees, so that the adsorbed and fixed heat sink is flipped to between the two sets of cold spray treatment parts 3, and the cold spray supply part 4 and the cold spray treatment part 3 are started so that the powder is cold sprayed at high pressure on both sides of the heat sink to complete the cold spraying; Step 3: While the above-mentioned cold spray treatment is being carried out, the next group of heat sinks is continuously placed into the positioning and loading section 2. As the positioning and loading section 2 moves, the opening and closing control section 14 controls the internal sealing and pressure maintenance of the adsorption and grabbing assembly 13 at the cold spraying location, and the other opening and closing control section 14 is opened to activate the negative pressure mechanism, so that the heat sinks in the positioning and loading section 2 are simultaneously adsorbed and fixed on the adsorption and grabbing assembly 13 at the corresponding adsorption location. Step 4: As the cold spray treatment is completed, the drive mechanism 10 starts again and enables the adsorption and grabbing component 13 to flip over. The newly positioned and adsorbed heat sink is flipped to the cold spray treatment part 3, and the heat sink after cold spraying returns to one side of the positioning and loading part 2. The corresponding opening and closing control part 14 is opened. When the internal negative pressure is small, the adsorption and grabbing needs to be cancelled, and the heat sink after cold spraying automatically falls out along the bottom port 6, completing the rotational directional discharging.

[0042] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-layer composite cold spray device for a new energy vehicle heat sink, comprising a support plate (1), a cold spray treatment portion (3) provided on the top of the support plate (1), a cold spray supply portion (4) provided on one side of the cold spray treatment portion (3), and characterized in that: The top of the support plate (1) is fixedly connected to a positioning and feeding portion (2), the top of the support plate (1) is fixedly connected to a vertical plate (8), a rotating guide shaft (9) is rotatably installed in the vertical plate (8), an adsorption and grabbing component (13) is fixedly sleeved on the outer surface of the rotating guide shaft (9), the top of the adsorption and grabbing component (13) is provided with an opening and closing control portion (14), a negative pressure mechanism is fixedly provided on one side of the vertical plate (8), when the adsorption and grabbing component (13) rotates to the positioning and feeding portion (2), the positioning and grabbing of the heat sink is completed by the negative pressure mechanism, and when the adsorption and grabbing component (13) drives the heat sink to rotate to the two groups of cold spray processing portions (3), double-sided cold spraying is completed by the negative pressure mechanism; The rotating conductive shaft (9) comprises a shaft body (91), a suction port (92) and a side port (93), wherein the suction port (92) is provided on the end face of the shaft body (91), the side port (93) is provided on the outside of the shaft body (91), and the side port (93) is communicated with the suction port (92), the end of the suction port (92) is communicated with the negative pressure mechanism, and the side port (93) is communicated with the adsorption and grabbing component (13).

2. A multi-layer composite cold spray device for a new energy vehicle heat sink according to claim 1, characterized in that: The adsorption and grabbing assembly (13) includes a sleeve plate (131), an adsorption frame (132) and an internal cavity (133), wherein the sleeve plate (131) is fixedly sleeved on the outside of the shaft body (91), the adsorption frame (132) is symmetrically fixed on both ends of the sleeve plate (131), and the internal cavity (133) is symmetrically opened inside the sleeve plate (131), the internal cavity (133) is communicated with the adsorption frame (132), and the internal cavity (133) corresponds to and is communicated with the side opening (93) one by one.

3. A multi-layer composite cold spray device for a new energy vehicle heat sink according to claim 2, characterized in that: The opening and closing control part (14) includes an electric push rod three (141), a sealing block (142) and a connecting port (143). The connecting port (143) is opened in the sleeve (131) and is connected to the internal cavity (133). The connecting port (143) passes through the upper and lower surfaces of the sleeve (131). The sealing block (142) is movably sleeved in the connecting port (143). The electric push rod three (141) is fixed to the top of the sleeve (131) through a bracket. The movable end of the electric push rod three (141) is fixedly connected to the sealing block (142), and a through hole is provided in the middle of the sealing block (142), and the communication between the internal cavity (133) and the side port (93) is controlled by the through hole.

4. A multi-layer composite cold spray device for a new energy vehicle heat sink according to claim 3, characterized in that: The negative pressure mechanism includes a vacuum pump (11) and a connecting cover (12), wherein the suction end of the vacuum pump (11) is connected to the connecting cover (12), the connecting cover (12) is fixed on the vertical plate (8), the connecting cover (12) is sleeved on the outside of one end of the shaft (91), and the connecting cover (12) is connected to the suction port (92), and the driving mechanism (10) controls the rotation of the shaft (91).

5. A multi-layer composite cold spray device for a new energy vehicle heat sink according to claim 4, characterized in that: The positioning and loading portion (2) comprises a loading frame (21) and an electric push rod (22). The loading frame (21) is located above the support plate (1), and the electric push rod (22) drives the loading frame (21) to move laterally.

6. A multi-layer composite cold spray device for a new energy vehicle heat sink according to claim 5, characterized in that: A bottom opening (6) is provided at the top of the support plate (1), and a positioning frame (7) is fixedly connected to the bottom of the support plate (1).

7. A multi-layer composite cold spray device for a new energy vehicle heat sink according to claim 6, characterized in that: The cold spray processing section (3) includes a cold spray box (31) and a nozzle (32), and the cold spray supply section (4) includes a supply frame (41) and a conduction frame (42), wherein the supply frame (41) is fixed on the cold spray box (31), and the conduction frame (42) is fixed on the outer end of the cold spray box (31), the supply frame (41) is communicated with the conduction frame (42), and the conduction frame (42) is communicated with the nozzle (32), and the nozzle (32) is fixed in the cold spray box (31), and the number of the cold spray boxes (31) is two, and a gap is provided between the two cold spray boxes (31), and a powder supply mechanism and a high-pressure airflow mechanism are provided in the supply frame (41), and the supply frame (41) sprays high-pressure powder through the conduction frame (42) and the nozzle (32).

8. The multi-layer composite cold spray device for a new energy vehicle heat sink according to claim 7, characterized in that: The collecting assembly (5) comprises a collecting frame (51), a filter plate (52), an exhaust fan (53) and an adapter (54); the collecting frame (51) is located above the cold spray box (31); the collecting frame (51) is connected to the cold spray box (31) through a suction pipe; the adapter (54) is provided in the collecting frame (51); the filter plate (52) is detachably sleeved in the adapter (54); a filter mesh is provided on the front of the filter plate (52); and the exhaust fan (53) is provided in the collecting frame (51).

9. The multi-layer composite cold spray device for a new energy vehicle heat sink according to claim 8, characterized in that: The cold spray box (31) is provided with a sealing mechanism inside, and the sealing mechanism includes an adapting groove (15), a sealing frame (16) and a second electric push rod (17). The adapting groove (15) is opened inside the cold spray box (31), the second electric push rod (17) is fixed in the adapting groove (15), the sealing frame (16) is movably sleeved in the adapting groove (15), and the second electric push rod (17) controls the movement of the sealing frame (16).

10. The spraying method of a multi-layer composite cold spray device for a new energy vehicle radiator according to claim 9, characterized in that: The spraying steps include: The first step is to vertically place the heat sink to be processed in the positioning and loading part (2), keep the adsorption and grabbing component (13) horizontal, start the positioning and loading part (2) and push the heat sink to contact one end of the adsorption and grabbing component (13), start the negative pressure mechanism, and form a negative pressure inside the adsorption and grabbing component (13) by rotating the conducting shaft (9), and adsorb and fix the contacting heat sink; Step 2: Start the driving mechanism (10) to rotate the rotating guide shaft (9) 180 degrees, so that the adsorbed and fixed heat sink is flipped to between the two sets of cold spray processing parts (3), and start the cold spray supply part (4) and the cold spray processing part (3) so that the powder is cold sprayed at high pressure on both sides of the heat sink to complete the cold spraying; Step 3: When the above-mentioned cold spraying treatment is carried out, the next group of heat sinks are continuously put into the positioning and loading part (2). As the positioning and loading part (2) moves, the opening and closing control part (14) controls the internal sealing and pressure maintenance of the adsorption and grabbing component (13) at the cold spraying position, and the other opening and closing control part (14) is opened to start the negative pressure mechanism, so that the heat sinks in the positioning and loading part (2) are simultaneously adsorbed and fixed on the adsorption and grabbing component (13) at the adsorption corresponding position; Step 4: As the cold spraying treatment is completed, the driving mechanism (10) is started again and the adsorption grabbing component (13) is turned over. The newly positioned and adsorbed heat sink is turned over to the cold spraying treatment part (3). The heat sink after cold spraying returns to one side of the positioning loading part (2). The corresponding opening and closing control part (14) is opened. When the internal negative pressure is less, the adsorption grabbing needs to be cancelled. The heat sink after cold spraying automatically falls out along the bottom opening (6), completing the rotational directional discharge.

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