High-heat-state enameled wire varnishing device for generator and process thereof

Abstract

The device comprises a main body, the upper part of the main body is a varnishing box, and the lower part of the main body is a liquid storage box; the painting box is provided with a painting groove, a wire inlet unit, a painting roller and a paint scraping unit. A liquid storage tank is arranged in the liquid storage tank, the liquid storage tank is communicated with the painting tank through a liquid feeding pipe and a liquid return pipe, and a temperature sensor is arranged in the painting tank; the liquid storage tank is connected with external feeding equipment through a liquid inlet pipe; the liquid feeding pipe is connected with a heat exchange unit which is connected with heat exchange equipment through a circulating pipe. The main body is divided into the upper part and the lower part, the upper part is the painting box used for painting wires, and the lower part is the liquid storage box used for storing paint liquid; a wire inlet unit and a painting roller are arranged on the painting box and used for painting wires; the liquid storage tank is communicated with the painting groove through the liquid feeding pipe and the liquid return pipe, so that the paint liquid in the painting groove can be supplemented in time; and a temperature sensor is arranged and connected with the heat exchange unit, so that the painting effect is ensured. The paint spraying device has the advantages of being more stable in paint spraying and relatively better in paint spraying effect.

Description

Technical Field

[0001] The invention relates to the technical field of enameled wire preparation, in particular to a high-heat enameled wire painting device for generators and a process thereof. Background Art

[0002] Enameled wire is a main type of winding wire, consisting of two parts: conductor and insulation layer.

[0003] Enameled wire is widely used in various generators. The existing enameled wire is affected by raw materials, processes, preparation equipment, etc., and its heat resistance is relatively general. However, the power of existing generators is getting higher and higher, which makes the heat generated on the enameled wire increase, and the heat resistance requirements for the enameled wire are also getting higher and higher.

[0004] Varnishing is an important process for enameled wire. The quality of varnishing will directly affect the performance of the enameled wire paint layer, thereby directly affecting the quality and stability of the enameled wire.

[0005] The existing equipment used for painting enameled wires is relatively simple. The paint liquid is dipped into the wire material by a paint roller and attached to the wire material for painting. There are problems such as unstable painting and general painting effect. Summary of the invention

[0006] The object of the present invention is to provide a high-heat enameled wire painting device and process for a generator, which has the advantages of more stable painting and relatively better painting effect.

[0007] The technical solution of the present invention is as follows: a high-temperature enameled wire painting device for a generator comprises a main body, wherein the upper part of the main body is a paint box, and the lower part is a liquid storage tank; a paint tank for storing paint liquid is provided on the paint box, a line inlet unit is provided on the left side of the paint box, two paint rollers with their lower parts immersed in the paint liquid are distributed on the paint tank, and a paint scraping unit corresponding to the paint rollers and used for passing through the wire body is provided on the right side of the paint box; a liquid storage tank is provided in the liquid storage tank, and the liquid storage tank is connected to the paint tank through an upper liquid pipe and a return liquid pipe respectively, and a temperature sensor is provided in the paint tank; the liquid storage tank is detachably connected to an external feeding device through a liquid inlet pipe; a heat exchange unit is connected to the upper liquid pipe, and the heat exchange unit is detachably connected to an external heat exchange device through a circulation pipe.

[0008] In the aforementioned high-temperature enameled wire painting device for generators, the bottom of the liquid storage tank is tilted to one side, the return liquid pipe is located on the higher side of the bottom of the liquid storage tank, and the upper liquid pipe is located on the lower side of the bottom of the liquid storage tank; control valves are provided on the return liquid pipe and the liquid inlet pipe.

[0009] In the aforementioned high-heat enameled wire painting device for generators, a pumping pump located at the bottom of the liquid storage tank is provided at the bottom of the upper liquid pipe, and a detachable dustproof mesh cover is provided outside the pumping pump.

[0010] In the aforementioned high-temperature enameled wire painting device for generators, the heat exchange unit includes a heat exchange sleeve, connection ports arranged at the upper and lower ends of the heat exchange sleeve, a plurality of inner tubes evenly distributed in the heat exchange sleeve and connected to the connection ports, and a connection port arranged on one side of the heat exchange sleeve and connected to the circulation pipe; the connection port is detachably and hermetically connected to the upper liquid pipe; a honeycomb opening corresponding to the inner tube is opened on the connection port, and paint liquid flows in the inner tube; a heat exchange medium flows in the heat exchange sleeve.

[0011] In the aforementioned high-temperature enameled wire painting device for generators, the wire feed unit includes a wire feed roller, an adjustable wire pressing roller and an adjustment mechanism rotatably arranged outside the painting box and connected to the wire pressing roller; the adjustment mechanism includes a rotating groove arranged outside the painting box, an adjustment handle correspondingly rotatably arranged on the rotating groove, and a connecting rod respectively connecting the adjustment handle and the wire pressing roller; the painting box is provided with an arc-shaped sliding groove, and the sliding groove corresponds to the adjustment path of the wire pressing roller.

[0012] In the aforementioned high-temperature enameled wire painting device for generators, a plurality of concave paint grooves are distributed on the painting roller, and mounting grooves are distributed on both sides of each paint groove; a immersion sleeve is detachably provided on the mounting groove; and the immersion sleeve is made of elastic fabric.

[0013] The high-heat enameled wire painting process for generators includes the following processes:

[0014] S1. Painting: coating the surface of the wire with paint to obtain product A;

[0015] S2. Evaporation and curing: Product A is evaporated and cured and cross-linked in the furnace in turn. The heating temperature of Product A in the evaporation stage is 280-340°C, and the evaporation time is 3-15 seconds. The heating temperature of Product A in the curing and cross-linking stage is 340-400°C, and the curing and cross-linking time is 25-35 seconds to obtain a finished product.

[0016] In the aforementioned high-heat enameled wire painting process for generators, the evaporation and curing described in S2 is specifically as follows:

[0017] The heating temperature in the evaporation stage is 310°C, and the evaporation time is 10 seconds. The heating temperature of product A in the curing and cross-linking stage is 370°C, and the curing and cross-linking time is 31 seconds, thereby obtaining a finished product.

[0018] Compared with the prior art, the present invention divides the main body into two parts, the upper part is a paint box for painting the wire, and the lower part is a liquid storage tank for storing the paint liquid;

[0019] The paint box is provided with a wire feeding unit and a pair of paint rollers whose lower parts are immersed in the paint liquid, the wires are painted when the paint rollers rotate, and the paint scraping unit is used to scrape off the excess paint liquid;

[0020] The liquid storage tank is connected to the paint tank through the upper liquid pipe and the return liquid pipe, so that the paint liquid in the paint tank can circulate and flow, and the paint liquid in the paint tank can be replenished in time to ensure the painting effect;

[0021] By setting a temperature sensor in the paint tank and connecting a heat exchange unit to the upper liquid pipe, the temperature sensor is used to detect the temperature of the paint liquid in the paint tank in real time, and the heat exchange unit is used to heat the paint liquid to ensure that the paint liquid in the paint tank is always at an appropriate temperature to ensure the painting effect.

[0022] Therefore, the present invention has the advantages of more stable painting and relatively better painting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the painting device of the present invention;

[0024] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 It is a structural schematic diagram of a heat exchange unit in a painting device of the present invention;

[0026] Figure 4 It is a structural schematic diagram of a paint roller in a paint application device of the present invention.

[0027] The markings in the accompanying drawings are: 1-painting box, 11-painting trough, 12-sliding slot, 21-line feed roller, 22-line pressing roller, 23-paint scraping unit, 24-connecting rod, 25-adjusting handle, 3-liquid storage tank, 31-liquid storage tank, 32-return liquid pipe, 33-upper liquid pipe, 34-liquid inlet pipe, 41-suction pump, 42-dustproof mesh cover, 5-heat exchange unit, 51-heat exchange sleeve, 52-connecting port, 53-inner pipe, 54-heat exchange medium, 55-connecting port, 56-circulating pipe, 6-painting roller, 61-painting trough, 62-immersion sleeve, 9-paint liquid. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0029] Embodiment 1. A high-heat enameled wire painting device for a generator, such as Figure 1-4As shown, it includes a main body, the upper part of the main body is a paint box 1, and the lower part is a liquid storage tank 3; a paint tank 11 for storing paint liquid 9 is provided on the paint box 1, and a line inlet unit is provided on the left side of the paint box 1, and two paint rollers 6 with their lower parts immersed in the paint liquid 9 are distributed on the paint tank 11, and a paint scraping unit 23 corresponding to the paint rollers 6 and used to pass through the line body is provided on the right side of the paint box 1; a liquid storage tank 31 is provided in the liquid storage tank 3, and the liquid storage tank 31 is connected to the paint tank 11 through an upper liquid pipe 33 and a return liquid pipe 32 respectively, and a temperature sensor is provided in the paint tank 11; the liquid storage tank 31 is detachably connected to an external feeding device through a liquid inlet pipe 34; a heat exchange unit 5 is connected to the upper liquid pipe 33, and the heat exchange unit 5 is detachably connected to an external heat exchange device through a circulation pipe 56.

[0030] The bottom of the liquid storage tank 31 is tilted to one side, the return pipe 32 is located at the higher side of the bottom of the liquid storage tank 31, and the upper liquid pipe 33 is located at the lower side of the bottom of the liquid storage tank 31; control valves are provided on the return pipe 32 and the inlet pipe 34.

[0031] A pumping pump 41 located at the bottom of the liquid storage tank 31 is provided at the bottom of the upper liquid pipe 33 , and a detachable dustproof mesh cover 42 is provided outside the pumping pump 41 .

[0032] The heat exchange unit 5 includes a heat exchange sleeve 51, connection ports 52 provided at the upper and lower ends of the heat exchange sleeve 51, a plurality of inner tubes 53 evenly distributed in the heat exchange sleeve 51 and connected to the connection ports 52, and a connection port 55 provided on one side of the heat exchange sleeve 51 and connected to a circulation pipe 56; the connection port 52 is detachably and sealedly connected to the upper liquid pipe 33; a honeycomb opening corresponding to the inner tube 53 is provided on the connection port 52, and the paint liquid 9 flows in the inner tube 53; a heat exchange medium 54 flows in the heat exchange sleeve 51.

[0033] The wire feeding unit includes a wire feeding roller 21, an adjustable wire pressing roller 22 and an adjustment mechanism rotatably arranged outside the paint box 1 and connected to the wire pressing roller 22; the adjustment mechanism includes a rotating groove arranged outside the paint box 1, an adjustment handle 25 correspondingly rotatably arranged on the rotating groove, and a connecting rod 24 respectively connecting the adjustment handle 25 and the wire pressing roller 22; the paint box 1 is provided with an arc-shaped sliding groove 12, and the sliding groove 12 corresponds to the adjustment path of the wire pressing roller 22.

[0034] The paint roller 6 is provided with a plurality of concave paint grooves 61 , and each of the paint grooves 61 has mounting grooves on both sides; a detachable immersion sleeve 62 is provided on the mounting groove; and the immersion sleeve 62 is made of elastic fabric.

[0035] The high-heat enameled wire painting process for generators includes the following processes:

[0036] S1. Painting: coating the surface of the wire with paint to obtain product A;

[0037] S2. Evaporation and curing: Product A is evaporated and cured and cross-linked in the furnace in turn. The heating temperature of Product A in the evaporation stage is 280-340°C, and the evaporation time is 3-15 seconds. The heating temperature of Product A in the curing and cross-linking stage is 340-400°C, and the curing and cross-linking time is 25-35 seconds to obtain a finished product.

[0038] Example 2. The other contents are the same as those of Example 1, except that the evaporation curing described in S2 is specifically as follows:

[0039] The heating temperature in the evaporation stage is 310°C, and the evaporation time is 10 seconds. The heating temperature of product A in the curing and cross-linking stage is 370°C, and the curing and cross-linking time is 31 seconds, thereby obtaining a finished product.

Claims

1. A high-heat enameled wire painting device for a generator, characterized in that: The invention comprises a main body, wherein the upper part of the main body is a paint box (1), and the lower part is a liquid storage tank (3); the paint box (1) is provided with a paint tank (11) for storing paint liquid (9); a line inlet unit is provided on the left side of the paint box (1); two paint rollers (6) whose lower parts are immersed in the paint liquid (9) are distributed on the paint tank (11); a paint scraping unit (23) corresponding to the paint rollers (6) and used for passing through the line body is provided on the right side of the paint box (1); the liquid storage tank (3) has a plurality of paint rollers (23) disposed inside the paint tank (1); A liquid storage tank (31) is provided, and the liquid storage tank (31) is connected to the paint tank (11) through an upper liquid pipe (33) and a return liquid pipe (32), and a temperature sensor is provided in the paint tank (11); the liquid storage tank (31) is detachably connected to an external feeding device through a liquid inlet pipe (34); a heat exchange unit (5) is connected to the upper liquid pipe (33), and the heat exchange unit (5) is detachably connected to an external heat exchange device through a circulation pipe (56).

2. The high-heat enameled wire painting device for generator according to claim 1, characterized in that: The bottom of the liquid storage tank (31) is tilted toward one side, the liquid return pipe (32) is located at the higher side of the bottom of the liquid storage tank (31), and the upper liquid pipe (33) is located at the lower side of the bottom of the liquid storage tank (31); control valves are provided on the liquid return pipe (32) and the liquid inlet pipe (34).

3. The high-heat enameled wire painting device for generator according to claim 2, characterized in that: A pumping pump (41) located at the bottom of the liquid storage tank (31) is provided at the bottom of the upper liquid pipe (33), and a detachable dustproof net cover (42) is provided outside the pumping pump (41).

4. The high-heat enameled wire painting device for generator according to claim 1, characterized in that: The heat exchange unit (5) comprises a heat exchange sleeve (51), connection ports (52) arranged at the upper and lower ends of the heat exchange sleeve (51), a plurality of inner tubes (53) evenly distributed in the heat exchange sleeve (51) and connected to the connection ports (52), and a connection port (55) arranged on one side of the heat exchange sleeve (51) and connected to a circulation pipe (56); the connection port (52) is detachably and hermetically connected to an upper liquid pipe (33); a honeycomb opening corresponding to the inner tube (53) is provided on the connection port (52), and a paint liquid (9) flows in the inner tube (53); a heat exchange medium (54) flows in the heat exchange sleeve (51).

5. The high-heat enameled wire painting device for generator according to claim 1, characterized in that: The wire feeding unit comprises a wire feeding roller (21), an adjustable wire pressing roller (22) and an adjusting mechanism rotatably arranged outside the paint box (1) and connected to the wire pressing roller (22); the adjusting mechanism comprises a rotating groove arranged outside the paint box (1), an adjusting handle (25) rotatably arranged on the rotating groove, and a connecting rod (24) respectively connecting the adjusting handle (25) and the wire pressing roller (22); the paint box (1) is provided with an arc-shaped sliding groove (12), and the sliding groove (12) corresponds to the adjustment path of the wire pressing roller (22).

6. The high-heat enameled wire painting device for generator according to claim 1, characterized in that: The paint roller (6) is provided with a plurality of concave paint grooves (61), and each of the paint grooves (61) is provided with mounting grooves on both sides; a liquid immersion sleeve (62) is detachably provided on the mounting groove; and the liquid immersion sleeve (62) is made of elastic fabric.

7. A high-heat enameled wire painting process for a generator according to the high-heat enameled wire painting device for a generator according to any one of claims 1 to 6, characterized in that: The process includes: S1. Painting: coating the surface of the wire with paint to obtain product A; S2. Evaporation and curing: Product A is evaporated and cured and cross-linked in the furnace in turn. The heating temperature of Product A in the evaporation stage is 280-340°C, and the evaporation time is 3-15 seconds. The heating temperature of Product A in the curing and cross-linking stage is 340-400°C, and the curing and cross-linking time is 25-35 seconds to obtain a finished product.

8. The high-heat enameled wire painting process for generators according to claim 7, characterized in that: The evaporation curing described in S2 is as follows: The heating temperature in the evaporation stage is 310°C, and the evaporation time is 10 seconds. The heating temperature of product A in the curing and cross-linking stage is 370°C, and the curing and cross-linking time is 31 seconds, thereby obtaining a finished product.

Images