A cooling system for enameled wire production

Abstract

The present invention discloses a cooling system for enameled wire production, which includes a first cooling tank, a second cooling tank connected to the first cooling tank, a cooling pipe for arranging in the first cooling tank to cool the enameled wire, and a cooling mechanism arranged in the second cooling tank. The cooling system for enameled wire production adopts a split cooling method. For the first cooling, by placing the enameled wire in the cooling pipe, the external coolant can cool the cooling pipe, and conduct the low temperature to the inside of the cooling pipe, so as to cool the enameled wire inside the cooling pipe, reducing the conditions such as film cracking and wire breakage of the high-temperature enameled wire directly encountering the coolant with a lower temperature. For the second cooling, the warm coolant is drained from the first cooling tank to cool the enameled wire, and at the same time, it is combined with the externally added coolant and cooling gas to cool the enameled wire, which can effectively improve the cooling efficiency and reduce the phenomena of film cracking and wire breakage on the enameled wire.

Description

Technical Field

[0001] The present invention relates to the technology of enameled wire cooling, and particularly to a temperature reduction system for enameled wire production. Background Art

[0002] Enameled wire refers to a metal wire with an insulating paint as the insulating coating and is used for winding electromagnetic coils, also known as electromagnetic wire. Enameled wire is a main variety of winding wire and consists of two parts: a conductor and an insulating layer. During production, a metal rod is first drawn into a metal wire that meets the requirements, and after annealing and softening, it is coated with paint multiple times and then baked. Enameled wire needs to be routed during the processes of wire drawing, annealing, painting, baking, cooling, lubrication, and wire winding, so that the enameled wire can enter the next process from the previous process. After the enameled wire is baked in an oven, it needs to be cooled and finally wound.

[0003] After the enameled wire is baked in a baking furnace, its surface temperature is high, the paint film is relatively soft, and the strength is small. If the cooling is improper, when the wire temperature is too low, the adhesion of the enameled wire surface will become poor, resulting in uneven coating defects in the subsequent surface painting process, and it is easy to cause the paint film to crack and the wire to break; when the wire temperature is too high, quality problems such as surface pitting and paint tumors on the enameled wire surface will occur. Currently, the online cooling methods for enameled wire are divided into two types: water cooling and air cooling.

[0004] Water cooling is achieved by referring to the method described in the invention patent with the Chinese patent publication number CN104934141A and the name "Enameled Wire Cooling Device", which is to pass the enameled wire through a water tank.

[0005] Air cooling is as described in the invention patent application with the Chinese patent publication number CN104658703A and the name "A Cooling Device for Enameled Wire": the enameled wire is in a vertical manner, and fans are arranged on both sides of its traveling path for strong air cooling. In the above two methods, the water cooling structure is complex and requires a large number of accessories. In particular, the enameled wire after entering the water tank for cooling is likely to carry the cooled water out with the enameled wire and then fall onto metal structures such as guide wheels, resulting in rust and jamming of the guide wheel bearings or other metal structures.

[0006] Currently, most hot air circulation catalytic combustion enameled wire furnaces adopt the method of room temperature plus air cooling. However, due to seasonal changes, there are significant differences in the ambient temperature. In winter, the room temperature is low, and the enameled wire cools faster under the same cooling stroke; while in summer, the room temperature is relatively higher, and the enameled wire requires stronger wind blowing or a relatively longer cooling cycle. Since the wind speed of the fan in the air cooling method is not easy to adjust during use, on the one hand, it becomes a difficult problem to accurately ensure that the enameled wire can reach a suitable cooling temperature; on the other hand, it is easy to cause the enameled wire to vibrate during wire traveling due to excessive wind force, resulting in large fluctuations in product quality and a large number of defective finished wires, thus causing economic losses to the company.

[0007] In addition, after the enameled wire is baked at high temperature by traditional cooling methods and then enters cold water for cooling, it will cause the paint film after baking to crack, break the wire, and other conditions. Summary of the Invention

[0008] In order to solve the defects existing in the above-mentioned prior art, the present invention proposes a cooling system for enameled wire production.

[0009] The technical solution of the present invention is realized as follows:

[0010] A cooling system for enameled wire production, characterized in that it includes:

[0011] A first cooling tank, the first cooling tank is connected to a water addition system, and coolant is added to the first cooling tank through the water addition system;

[0012] A second cooling tank connected to the first cooling tank, the position of the second cooling tank is lower than that of the first cooling tank, and the first cooling tank drains the coolant in the first cooling tank into the second cooling tank through a connecting pipe;

[0013] A cooling pipe for cooling the enameled wire arranged in the first cooling tank, the cooling pipe extends from the first cooling tank to the second cooling tank,

[0014] A cooling mechanism arranged in the second cooling tank, the cooling mechanism introduces external coolant and cooling gas to cool the enameled wire, and the cooling mechanism has a sliding cylinder, a cylinder, a movable part, a release component and a hollow pipe. The cylinder is installed on the outer wall of the second cooling tank, the movable part is installed inside the sliding cylinder, the release component is installed inside the sliding cylinder, the release component is connected to the cylinder through the hollow pipe, and

[0015] A drainage tank connected to the second cooling tank, the drainage tank is located at the lower end of the cylinder, and the hollow pipe extends from the second cooling tank to the upper end of the drainage tank.

[0016] In the present invention, the temperature of the coolant in the first cooling tank is lower than the temperature of the coolant in the second cooling tank.

[0017] In the present invention, the cooling pipe is successively composed of a first installation part, a spiral part, a second installation part, a first vertical part, a connecting part, a second vertical part and an extending part. The first installation part and the second installation part are fixed to the wall of the first cooling tank. The spiral part is located in the middle of the first cooling tank, and the connecting part connects the first cooling tank and the second cooling tank.

[0018] In the present invention, the slide cylinder is composed of a first retaining member and a second retaining member which are symmetrically arranged. The first retaining member has the same structure as the second retaining member. A movable chamber for the movable member to move is formed through the middle of the first retaining member.

[0019] In the present invention, the interior of the movable part is hollowed out to form an installation chamber, and the movable part is provided with a through hole for the enameled wire to pass through.

[0020] In the present invention, the release assembly consists of a base and a symmetrically arranged mounting seat and a release member. The base is connected to the hollow tube. A groove is provided on the base, and the groove is connected to the cooling area between the symmetrically arranged mounting seat and the release member.

[0021] In the present invention, a mounting arc groove is provided on the mounting seat, the angle of the mounting arc groove is a major arc, and the release member is arranged in the mounting arc groove.

[0022] In the present invention, a strip hole is provided in the middle of the release member, a driving member is provided in the strip hole, a circular hole cooperating with the driving member is provided on the movable member, a driving groove cooperating with the driving member is provided on the inner walls of the first retaining member and the second retaining member, and both ends of the driving member pass through the circular hole and are placed in the driving groove.

[0023] In the present invention, the driving groove consists of an active area, a holding area and a rotating area. The width of the active area is H1, the width of the holding area is H2, the width of the rotating area is H3, H1>H2=H3, and the active area and the holding area are connected by an inclined guide surface.

[0024] In the present invention, the angle between the rotating area and the holding area is 170°.

[0025] The cooling system for enameled wire production of the present invention has the following beneficial effects: the cooling system for enameled wire production adopts separate cooling. The first cooling is performed by placing the enameled wire in a cooling pipe so that the external coolant can cool the cooling pipe and conduct the low temperature to the inside of the cooling pipe to cool the enameled wire inside the cooling pipe, thereby reducing the high-temperature enameled wire directly encountering the coolant at a lower temperature and causing the paint film to crack and break. The second cooling is performed by discharging the warm coolant from the first cooling box to cool the enameled wire, and at the same time, the enameled wire is cooled by adding coolant and cooling gas from the outside, which can effectively speed up the cooling efficiency and reduce the paint film cracking and wire breakage on the enameled wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of a cooling system for producing enameled wires of the present invention;

[0027] Figure 2 forFigure 1 Top view;

[0028] Figure 3 is Figure 2 Sectional view taken along line A-A in ;

[0029] Figure 4 Schematic structural view of the cooling pipe and the temperature reduction mechanism in the present invention;

[0030] Figure 5 is Figure 4 Schematic structural view of the temperature reduction mechanism in ;

[0031] Figure 6 is Figure 5 Exploded view of ;

[0032] Figure 7 is Figure 6 Schematic structural view of the movable part in ;

[0033] Figure 8 Schematic structural view of the release component installed inside the movable part in the present invention;

[0034] Figure 9 Schematic view of the installation state of the release component and the enameled wire in the present invention;

[0035] Figure 10 Schematic view of the installation state of the first holding part, the movable part and the release component in the present invention.

[0036] In the figure: first cooling box 1, second cooling box 2, enameled wire 3, cooling pipe 4, temperature reduction mechanism 5, drainage box 6, drain pipe 7, connecting pipe 8, first installation part 9, spiral part 10, second installation part 11, first vertical part 12, connecting part 13, second vertical part 14, extension part 15, first cooling chamber 16, second cooling chamber 17, hollow pipe 18, cylinder 19, sliding cylinder 20, movable part 21, release component 22, activity chamber 23, driving groove 24, driving part 25, release part 26, mounting seat 27, through hole 28, first holding part 29, second holding part 30, fixing part 31, bolt 32, first stop block 33, second stop block 34, placement area 35, baffle 36, installation chamber 37, base 38, first pin shaft 39, second pin shaft 40, pin hole 41, cooling area 42, installation arc groove 43, strip hole 44, round hole 45, discharge area 46, drainage area 47, limiting part 48, sharp corner part 49, small hole 50, weight rod 51, activity area 52, holding area 53, rotating area 54, guiding surface 55, first connecting pipe 56, second connecting pipe 57, groove 58, limiting groove 59. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0038] As Figures 1 to 10 shown, this cooling system for enameled wire production of the present invention includes a first cooling tank 1, a second cooling tank 2 connected to the first cooling tank 1, a cooling pipe 4 for cooling the enameled wire 3 disposed in the first cooling tank 1, a cooling mechanism 5 disposed in the second cooling tank 2, and a drainage tank 6 connected to the second cooling tank 2. The first cooling tank 1 mainly realizes the first pre-cooling of the enameled wire 3, and heats up the coolant in the first cooling tank 1 through the high temperature of the enameled wire 3, so as to ensure that the enameled wire 3 can be pre-cooled, avoid the phenomenon of film cracking of the enameled wire 3 when directly encountering the coolant at a lower temperature, and at the same time heat up the coolant in the first cooling tank 1, so that after the coolant in the first cooling tank 1 flows into the second cooling tank 2, it can ensure that the coolant temperature in the second cooling tank 2 is relatively high, and the enameled wire 3 can be directly cooled in contact with the heated coolant in the second cooling tank 2. It can not only avoid the cracking of the enameled wire 3, but also heat up the coolant to protect the film of the enameled wire 3.

[0039] Since the cooling pipe 4 is provided in the first cooling tank 1, the cooling pipe 4 extends directly from the outside of the first cooling tank 1 to the inside, but the enameled wire 3 does not directly contact the coolant in the first cooling tank 1.

[0040] In addition, since the position of the second cooling tank 2 is lower than that of the first cooling tank 1, the liquid level of the coolant inside the cooling pipe 4 held in the second cooling tank 2 can be made consistent with the liquid level of the coolant in the second cooling tank 2, rather than directly filling the entire cooling pipe 4.

[0041] The coolant temperature in the first cooling tank 1 is lower than the coolant temperature in the second cooling tank 2. A drain pipe 7 is provided at the bottom of the second cooling tank 2 for draining the coolant in the second cooling tank 2.

[0042] The first cooling tank 1 is connected to a water addition system, and coolant is added to the first cooling tank 1 through the water addition system. The coolant in this application can be cooling water.

[0043] The position of the second cooling tank 2 is lower than that of the first cooling tank 1, and the first cooling tank 1 drains the coolant in the first cooling tank 1 into the second cooling tank 2 through a connecting pipe 8.

[0044] A first cooling chamber 16 for placing the coolant is provided in the first cooling tank 1, and a second cooling chamber 17 is provided in the second cooling tank 2. The second cooling chamber 17 is used to hold the heated coolant flowing out of the first cooling tank 1.

[0045] The cooling pipe 4 extends from the first cooling tank 1 to the second cooling tank 2. The cooling pipe 4 is successively composed of a first mounting portion 9, a spiral portion 10, a second mounting portion 11, a first vertical portion 12, a connecting portion 13, a second vertical portion 14, and an extending portion 15. The first mounting portion 9 and the second mounting portion 11 are fixed to the wall of the first cooling tank 1, the spiral portion 10 is located in the middle of the first cooling tank 1, and the connecting portion 13 connects the first cooling tank 1 and the second cooling tank 2.

[0046] The first mounting portion 9 and the second mounting portion 11 are used to mount the cooling pipe 4 in the first cooling tank 1, and the spiral portion 10 can enable the enameled wire 3 to be cooled in the first cooling tank 1 for a long time, improving the cooling effect.

[0047] The height of the connecting pipe 8 between the first cooling tank 1 and the second cooling tank 2 is lower than the height of the connecting portion 13, so that the liquid level of the coolant in the second cooling tank 2 can be kept from exceeding the height of the connecting portion 13.

[0048] The drain tank 6 is located at the lower end of the cylinder 19, and the hollow pipe 18 extends from the second cooling tank 2 to the upper end of the drain tank 6. The drain tank 6 is used to collect part of the coolant flowing out from the hollow pipe 18. As Figure 10 shown, the coolant sprayed from the installation chamber 37 is discharged at the through port 28 to cool the enameled wire 3, and the spraying direction is opposite to the moving direction of the enameled wire 3. Therefore, the sprayed coolant will drive the coolant in the second cooling tank 2 to flow towards the cooling pipe 4, keeping only a small amount of coolant carried out by the enameled wire 3 into the drain tank 6 during the transmission process.

[0049] The temperature reduction mechanism 5 introduces external coolant and cooling gas to cool the enameled wire 3. The temperature reduction mechanism 5 includes a sliding cylinder 20, a cylinder 19, a movable member 21, a release assembly 22, and a hollow pipe 18. The cylinder 19 is installed on the outer wall of the second cooling tank 2, the movable member 21 is installed inside the sliding cylinder 20, the release assembly 22 is installed inside the sliding cylinder 20, and the release assembly 22 is connected to the cylinder 19 through the hollow pipe 18.

[0050] The cylinder 19 drives the hollow pipe 18 to move its position, and then the hollow pipe 18 drives the release assembly 22 and the movable member 21 to move in the activity chamber 23 of the sliding cylinder 20. The position of the driving member 25 is changed through the driving groove 24 on the inner wall of the activity chamber 23, so that the driving member 25 rotates an angle, driving the release member 26 to rotate in the mounting seat 27, thereby guiding the coolant and cooling gas from the first connecting pipe 56 and the second connecting pipe 57 to the through port 28 to cool the enameled wire 3 at the through port 28.

[0051] The slide 20 is composed of a first retaining member 29 and a second retaining member 30 which are symmetrically arranged. The first retaining member 29 has the same structure as the second retaining member 30. The middle of the first retaining member 29 is penetrated to form a movable chamber 23 for the movable member 21 to move. The first retaining member 29 is provided with a first connecting pipe 56, which is connected to an external device for injecting coolant. The second retaining member 30 is provided with a second connecting pipe 57, which is used to connect to an external device for injecting cooling gas.

[0052] The first retaining member 29 and the second retaining member 30 are provided with fixing portions 31 , and the fixing portions 31 are connected by bolts 32 .

[0053] A first stopper 33 and a second stopper 34 are provided inside the first retaining member 29, a placement area 35 is provided between the first stopper 33 and the second stopper 34, a baffle 36 is provided in the placement area 35, the hollow tube 18 passes through the baffle 36, and the baffle 36 is used to block the area between the first stopper 33 and the movable member 21, which is where the coolant and cooling gas in the first connecting pipe 56 and the second connecting pipe 57 are retained.

[0054] The movable part 21 is hollowed out to form a mounting chamber 37 , and the movable part 21 is provided with a through opening 28 through which the enameled wire 3 passes.

[0055] Since the movable member 21 is disposed in the movable chamber 23 , the installation chamber 37 in the middle of the movable member 21 is communicated with the movable chamber 23 .

[0056] The release assembly 22 consists of a base 38 and a symmetrically arranged mounting seat 27 and a release member 26. The base 38 and the mounting seat 27 are connected by a first pin shaft 39, and the base 38 and the movable member 21 are connected by a second pin shaft 40. The movable member 21 is provided with a pin hole 41 for placing the second pin shaft 40.

[0057] The base 38 is connected to the hollow tube 18, and a groove 58 is provided on the base 38, and the groove 58 is communicated with the cooling area 42 between the symmetrically arranged mounting seat 27 and the release member 26. The hollow tube 18 is communicated with the groove 58 and the cooling area 42, and the enameled wire 3 is led out from the cooling pipe 4, then passes through the cooling area 42, enters the groove 58, and then is led out from the hollow tube 18.

[0058] The mounting seat 27 is provided with a mounting arc groove 43, the angle of which is a major arc, and the release member 26 is arranged in the mounting arc groove 43. Since the angle of the mounting arc groove 43 is greater than 180°, the release member 26 can be kept rotating in the mounting arc groove 43 without falling out, and the release member 26 can only be taken out from both sides of the mounting arc groove 43.

[0059] A strip hole 44 is provided in the middle of the release member 26. A driving member 25 is provided in the strip hole 44. A circular hole 45 that mates with the driving member 25 is provided on the movable member 21. The diameter of the circular hole 45 is greater than the height of the driving member 25, which can ensure that the driving member 25 rotates in the circular hole 45 without interference with each other. Driving grooves 24 that mate with the driving member 25 are provided on the inner walls of the first holding member 29 and the second holding member 30. Both ends of the driving member 25 pass through the circular hole 45 and are placed in the driving grooves 24.

[0060] An a surface, a b surface, and a c surface are provided at the through port 28 on the movable member 21. The a surface is connected to the c surface through the b surface. A d surface is provided on the release member 26, and an e surface is provided on the mounting base 27. A discharge area 46 is formed between the b surface and the d surface, and a drainage area 47 is formed between the c surface and the d surface. The coolant and cooling gas led out from the first connecting pipe 56 and the second connecting pipe 57 enter the activity chamber 23, then enter the installation chamber 37, and then enter the discharge area 46 through the drainage area 47 and are ejected through the discharge area 46 to cool the enameled wire 3 at the cooling area 42.

[0061] A limiting portion 48 is provided on the mounting base 27, and a limiting groove 59 that mates with the limiting portion 48 is provided on the release member 26 for limiting the rotation angle of the release member 26.

[0062] In addition, a pointed corner portion 49 is provided on the release member 26, and the pointed corner portion 49 is in contact with and closes the b surface. A small hole 50 is provided in the pointed corner portion 49, and a weight rod 51 is provided in the small hole 50. The weight rod 51 can keep the contact between the release member 26 and the b surface closer.

[0063] The driving groove 24 is composed of a movable area 52, a holding area 53, and a rotating area 54. The width of the movable area 52 is H1, the width of the holding area 53 is H2, and the width of the rotating area 54 is H3. H1 > H2 = H3. The movable area 52 is connected to the holding area 53 through an inclined guiding surface 55. The angle between the rotating area 54 and the holding area 53 is 170°. The rotating area 54 faces the direction of the hollow tube 18, so that the driving member 25 is guided by the rotating area 54 to drive rotation, causing it to rotate in the reverse direction and separating the b surface and the d surface.

[0064] Since H1 > H2, when the driving member 25 moves from the movable area 52 to the holding area 53, it can be guided by the guiding surface 55 to rotate by an angle, straighten the driving member 25, so that the d surface on the release member 26 contacts the b surface to achieve closure. Then the driving member 25 enters the rotating area 54 from the holding area 53, and the driving member 25 can be rotated through the rotating area 54, thereby rotating the release member 26 to keep the d surface and the b surface separated.

[0065] In addition, since the mounting base 27 and the release member 26 are symmetrically arranged, the drive groove 24 is also symmetrically arranged. A partition can be added between the first holding member 29 and the second holding member 30 to separate the introduced coolant and cooling gas, so that the coolant and cooling gas are discharged from different discharge areas 46 respectively, realizing that the coolant and cooling gas separately cool the enameled wire 3.

[0066] Furthermore, if it is necessary to change the flow rates of the coolant and cooling gas discharged from different discharge areas 46, the angle between the rotation area 54 and the holding area 53 in the drive groove 24 can be changed, so that the cylinder 19 can drive the hollow tube 18 to change the rotation angle of the drive member 25, thereby controlling the spacing distance of the discharge area 46 between the d surface and the b surface on the release member 26.

[0067] The enameled wire 3 is introduced from the cooling pipe 4 and then enters the temperature reduction mechanism 5 to cool the enameled wire 3.

[0068] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cooling system for enameled wire production, characterized in that, Including: A first cooling box, which is connected to a water adding system, and coolant is added to the first cooling box through the water adding system; A second cooling box connected to the first cooling box, the position of the second cooling box is lower than that of the first cooling box, and the first cooling box drains the coolant in the first cooling box to the second cooling box through a connecting pipe; A cooling pipe used to cool the enameled wire in the first cooling box, the cooling pipe extends from the first cooling box to the second cooling box, A temperature reduction mechanism arranged in the second cooling box, which introduces external coolant and cooling gas to cool the enameled wire. The temperature reduction mechanism has a sliding cylinder, a cylinder, a moving part, a release component and a hollow pipe. The cylinder is installed on the outer wall of the second cooling box, the moving part is installed inside the sliding cylinder, the release component is installed inside the sliding cylinder, the release component is connected to the cylinder through the hollow pipe, and A drainage box connected to the second cooling box, the drainage box is located at the lower end of the cylinder, and the hollow pipe extends from the second cooling box to the upper end of the drainage box.

2. The cooling system for enameled wire production according to claim 1, wherein, The coolant temperature in the first cooling box is lower than the coolant temperature in the second cooling box.

3. The cooling system for enameled wire production according to claim 1, characterized in that, The cooling pipe is successively composed of a first installation part, a spiral part, a second installation part, a first vertical part, a connecting part, a second vertical part and an extension part. The first installation part and the second installation part are fixed to the box wall of the first cooling box. The spiral part is located in the middle of the first cooling box, and the connecting part connects the first cooling box and the second cooling box.

4. The cooling system for enameled wire production according to claim 1, characterized in that, The sliding cylinder is composed of a symmetrically arranged first retaining part and a second retaining part. The structures of the first retaining part and the second retaining part are the same. A moving room for the moving part to move is formed through the middle of the first retaining part.

5. The cooling system for enameled wire production according to claim 4, characterized in that, The inside of the moving part is hollowed out to form an installation room, and a through hole for the enameled wire to pass through is provided on the moving part.

6. The cooling system for enameled wire production according to claim 5, characterized in that, The release component is composed of a base, symmetrically arranged mounting seats and release pieces. The base is connected to the hollow pipe, and a groove is provided on the base, and the groove communicates with the cooling area between the symmetrically arranged mounting seats and release pieces.

7. The cooling system for enameled wire production according to claim 6, characterized in that, An installation arc groove is provided on the mounting seat, the angle of the installation arc groove is a major arc, and the release piece is arranged in the installation arc groove.

8. The cooling system for enameled wire production according to claim 7, wherein, A strip hole is provided in the middle of the release piece, a driving piece is arranged in the strip hole, a round hole for cooperating with the driving piece is provided on the moving part, and driving grooves for cooperating with the driving piece are provided on the inner walls of the first retaining part and the second retaining part. Both ends of the driving piece pass through the round hole and are placed in the driving grooves.

9. The cooling system for enameled wire production according to claim 8, wherein, The driving groove is composed of a moving area, a retaining area and a rotating area. The width of the moving area is H1, the width of the retaining area is H2, the width of the rotating area is H3, H1>H2=H3, and the moving area and the retaining area are connected by an inclined guiding surface.

10. The cooling system for enameled wire production according to claim 9, characterized in that, The angle between the rotating area and the retaining area is 170°.

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