Device for producing composite enameled wire with adjustable painting pass

Abstract

The utility model relates to the technical field of composite enamelled wire production, and discloses a device for producing a composite enamelled wire with adjustable painting passes, which comprises a rack and a paint groove, the rack is provided with a wire to be painted, one side of the wire to be painted is provided with a paint injection large pipe, the paint injection large pipe is provided with a ball valve, and the ball valve is connected with the paint groove. One end of the paint injection large pipe is connected with a first PTFE steel wire hose, the lower end of the first PTFE steel wire hose is connected with a connecting hard pipe, a paint groove is formed in the lower end of the connecting hard pipe, a plurality of sets of separated groove cavities are formed in the paint groove, and a push rod is arranged on one side of the connecting hard pipe. Enameled wire products produced by the utility model are excellent in performance and accord with national standard requirements, and the flow direction and the flow rate of paint liquid can be quickly modulated through the arrangement of the electromagnetic valve and the valve in the paint conveying pipeline, so that the change of paint types among painting times is easily realized, the requirements of various production processes are met, and the production efficiency is improved. And the flexible applicability of the equipment is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of composite enameled wire production, in particular to a device for producing composite enameled wires with adjustable painting passes. Background Art

[0002] Among many industrial products, enameled wire is an inconspicuous variety, but it is an indispensable material in today's electrical world. There are many types of enameled wires, such as composite coated enameled wires and single coated enameled wires. In terms of its insulation structure, composite enameled wire is composed of two or more paint films. The material performance is improved by using a composite method, thereby expanding the scope of use and becoming more economically reasonable. For example: 1. It can meet special use requirements, such as refrigerant-resistant enameled wires for refrigerators and air-conditioning compressors, which can be met by the structure of the composite coating. 2. The composite of various insulating layers can make their characteristics complement each other, improve and enhance their performance, and meet the use. 3. The cost of some enameled wires can be reduced, such as replacing the single-coated polyamide-imide enameled wire with polyesterimide and polyamide-imide composite coated enameled wire to reduce its cost. This has also led to the rapid development of composite enameled wires.

[0003] The process flow of enameled wire: unwinding - annealing - painting - baking - cooling - winding. Among them, painting is the process of applying enameled wire paint on the metal conductor to form a uniform paint layer with a certain thickness. The number of painting passes is affected by the solid content, viscosity, surface tension, contact angle, drying speed, painting method, paint layer thickness, etc. of the paint liquid. Generally, enameled wire paint needs to be coated and baked many times to make the solvent evaporate fully, the paint base resin react completely, and form a good paint film. In the painting pass: the first paint layer is more critical. If it is too thin, the paint film will have a certain air permeability, and the copper conductor will oxidize and cause the surface of the enameled wire to become flowery. If it is too thick, the cross-linking reaction may not be sufficient, resulting in a decrease in the adhesion of the paint film, and the tip will shrink after being pulled off. A thinner paint film in the last layer is beneficial to the scratch resistance of the enameled wire. When producing fine-gauge wires, the number of paint passes directly affects the appearance and pinholes and other properties.

[0004] my country started to produce simple composite coating enameled wire in the early 1990s. At that time, due to the single type of paint, the structure of the painting device was fixed and the function was single. Now there are many types of paint. In order to make full use of the excellent characteristics of various paints, this device was developed to solve the problems of the existing equipment for producing composite enameled wire. When in use, there are problems such as poor performance of enameled wire products, low customer satisfaction with the quality and performance of composite enameled wire, inconvenient operation for workers, and difficulty in controlling the thickness of each coating film. Utility Model Content

[0005] The utility model aims to provide a device for producing composite enameled wires with adjustable painting passes, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A device for producing composite enameled wire with adjustable paint passes comprises a frame and a paint tank, wherein a wire to be dipped in paint is arranged on the frame, a large paint injection tube is arranged on one side of the wire to be dipped in paint, a ball valve is installed on the large paint injection tube, one end of the large paint injection tube is connected to a first PTFE steel wire hose, the lower end of the first PTFE steel wire hose is connected to a connecting hard tube, the lower end of the connecting hard tube is provided with a paint tank, an array of separated groove cavities is provided in the paint tank, a push rod is arranged on one side of the connecting hard tube, an outer baffle is arranged below the push rod, an inner baffle is arranged below the outer baffle, the lower end of the paint tank is connected to a second PTFE steel wire hose, and three confluence cylinders are installed at the lower end of the second PTFE steel wire hose.

[0008] As a preferred technical solution of the utility model, the number of cavities is consistent with the number of paint passes, and a wiring pressure block is movably provided on the front side of the bottom of each cavity, and is inclined at a degree, and is supported and connected to the cavity wall through a flip assembly. A U-shaped wiring notch is provided at the lower end of the wiring pressure block body, and a handle is provided on the front side of the wiring pressure block body to move the wiring pressure block up and down to change the movement distance of the conductor in the paint immersion area.

[0009] As a preferred technical solution of the utility model, a cover plate made of RTFE material is provided on the front of the bottom of the paint trough, so that a pool accommodating a certain amount of paint liquid can be formed at the bottom of each groove cavity, which is used to collect the paint liquid that is not attached to the wire and is diverted from the routing block.

[0010] As a preferred technical solution of the utility model, a paint inlet metal tube with three holes is provided on the middle and lower sections of the back wall of each groove cavity toward the outside of the cavity and is connected with the groove cavity. A paint discharge metal tube with three holes is provided on the bottom wall of each groove cavity downward. A paint scraper mold and an electro-hydraulic proportional valve are provided in the middle and upper part of the groove cavity to adjust and control the thickness of the paint layer.

[0011] As a preferred technical solution of the utility model, the three holes of all the paint leakage metal pipes externally arranged at the bottom of the paint tank are respectively connected to the three groups of collecting boxes arranged on the lower frame through three groups of PTFE steel wire hoses, and a valve is provided between each PTFE steel wire hose and the collecting box to change the passage of the paint liquid. The paint liquid in the three groups of collecting boxes is filtered and then flows into the corresponding main paint box through respective pipelines to implement the circulating coating of the paint.

[0012] As a preferred technical solution of the utility model, the three holes of all the paint inlet metal pipes on the back side of the paint tank are respectively connected to the three steel paint supply main pipes arranged on the upper frame through three groups of PTFE steel wire hoses, and a solenoid valve is provided between each PTFE steel wire hose and the main pipe. The solenoid valve can be used to control and adjust the flow direction and flow rate of the paint. The three steel paint supply main pipes are respectively connected to the three servo motor pumps mounted on the frame, and the three servo motor pumps are then connected to the main paint box below through their own pipelines.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model produces enameled wire products with excellent performance, which meet the requirements of national standards. Through the setting of solenoid valves and valves in the paint delivery pipeline, the flow direction and flow rate of the paint liquid can be quickly modulated, so as to easily realize the change of paint types between the number of painting passes, and meet the needs of various production process requirements, thus enhancing the flexibility and applicability of the equipment.

[0015] 2. The utility model is simple and convenient for workers to operate during use, and the thickness of each coating film can be easily controlled. Under the premise of fixing the total number of painting passes, the painting passes of the three coating layers of primer, midcoat and topcoat can be arbitrarily combined. For example, when the total number of painting passes of the enameling equipment is 13, the combination can be 2+7+4, 1+9+3 or more according to the customer's requirements for the performance of the enameled wire. The device forms an independent space for the input and return of each paint through isolation and sealing, which does not affect the adjacent paint coatings, so that the painting passes of each coating can be arbitrarily combined.

[0016] 3. The utility model can change the paint delivery amount and the choice of paint type at any time by setting up various servo motor pumps in the paint delivery main pipeline. The paint conductor operation area always maintains constant tension and moves forward smoothly between the wheels, avoiding uneven and eccentric paint layers caused by vibration, which helps to improve the quality of painting. The two ends of the PTFE steel wire hose are installed and connected by sleeve connection and metal ties to facilitate the installation and maintenance of the paint circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic cross-sectional side view of the overall structure of the utility model.

[0020] In the figure: 1. wire to be dipped in paint; 2. large pipe for paint injection; 3. ball valve; 4. first PTFE steel wire hose; 5. connecting hard pipe; 6. push rod; 7. outer baffle plate; 8. inner baffle plate; 9. second PTFE steel wire hose; 10. confluence cylinder; 11. frame; 12. paint tank; 13. tank cavity. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The different types of section lines in the drawings in the embodiments of the utility model are not marked according to the national standard, nor are there any requirements for the materials of the components, but are used to distinguish the cross-sectional views of the components in the drawings.

[0022] See also Figure 1-2 A device for producing composite enameled wire with adjustable painting passes includes a frame 11 and a paint tank 12. A wire to be dipped in paint 1 is arranged on the frame 11, a large paint injection tube 2 is arranged on one side of the wire to be dipped in paint 1, a ball valve 3 is installed on the large paint injection tube 2, one end of the large paint injection tube 2 is connected to a first PTFE steel wire hose 4, the lower end of the first PTFE steel wire hose 4 is connected to a connecting hard tube 5, the lower end of the connecting hard tube 5 is provided with a paint tank 12, the paint tank 12 is provided with an array of separated groove cavities 13, a push rod 6 is arranged on one side of the connecting hard tube 5, an outer baffle 7 is arranged below the push rod 6, an inner baffle 8 is arranged below the outer baffle 7, a second PTFE steel wire hose 9 is connected to the lower end of the paint tank 12, and three confluence cylinders 10 are installed at the lower end of the second PTFE steel wire hose 9.

[0023] Among them, the number of groove cavities 13 is consistent with the number of paint passes. A wiring block is movably provided on the front of the bottom of each groove cavity 13, and is inclined at 45 degrees. It is connected and supported by the wall of the groove cavity 13 through a flip assembly. A U-shaped wiring notch is provided at the lower end of the wiring block body, and a handle is provided on the front of the wiring block body.

[0024] A cover plate made of RTFE material is disposed on the front and bottom of the paint tank 12 , so that a pool accommodating a certain amount of paint liquid can be formed at the bottom of each tank cavity 13 .

[0025] Among them, a paint inlet metal pipe with three holes is arranged outside the cavity in the middle and lower section of the back wall of each groove cavity 13, and is connected to the groove cavity 13. A paint discharge metal pipe with three holes is arranged downward on the bottom wall of each groove cavity 13, and a paint scraper mold and an electro-hydraulic proportional valve are arranged in the middle and upper part of the groove cavity 13.

[0026] The three holes of all paint-discharging metal pipes provided at the bottom of the paint tank 12 are connected to the three collection boxes provided on the lower frame 11 through three groups of PTFE steel wire hoses, and valves are provided between each PTFE steel wire hose and the collection box.

[0027] Among them, the three holes of all the paint inlet metal pipes on the back side of the paint tank 12 are respectively connected to the three steel paint supply main pipes arranged on the upper frame through three groups of PTFE steel wire hoses, and a solenoid valve is provided between each PTFE steel wire hose and the main pipe. The three steel paint supply main pipes are respectively connected to the three servo motor pumps mounted on the frame 11, and the three servo motor pumps are then connected to the main paint box below through their own pipelines.

[0028] A driving wheel is provided below the frame 11, a wind knife (for dust removal and dehumidification) is provided on the front side above the driving wheel, a roller group 1 is provided above the wind knife, the device is provided above the roller group 1, a drying furnace is provided above the device, a roller group 2 and a paint layer thickness detector are provided above the drying furnace, a guide wheel is provided above the paint layer thickness detector, and a heat preservation area is provided below and behind the guide wheel.

[0029] The working principle and use process of the utility model are as follows: first, when working, the wire 1 to be dipped in paint passes through the driving wheel upward into the air knife, then passes through the first roller in the roller group 1 and enters the first slot cavity in the device, passes through the drying furnace, the first roller in the roller group 2, and the paint layer thickness detector, and then enters the guide wheel, and then continues to move forward into the heat preservation area, and finally returns to the driving wheel, completing the operation of the first pass, and the following cycles of painting are carried out in sequence, realizing the function of one machine painting multiple passes at the same time;

[0030] By setting the solenoid valve and valve in the paint delivery pipeline, the flow direction and flow rate of the paint liquid can be quickly modulated, so as to easily realize the change of paint type between the number of painting passes, meet the needs of various production process requirements, and enhance the flexibility and applicability of the equipment;

[0031] The paint layer thickness detector installed behind the drying furnace is used to detect the thickness of the paint layer on the outer surface of the conductor after drying in real time. When the paint layer thickness does not meet the standard, the paint layer thickness detector sends a signal to the controller, which controls the hydraulic cylinder by controlling the electro-hydraulic proportional valve, and then adjusts the compression between the mold wall and the conductor, and finally realizes the control of the paint layer thickness of the enameled wire;

[0032] By setting up each servo motor pump in the paint delivery pipeline, the paint delivery amount and the choice of paint type can be changed at any time. The paint conductor running area always maintains constant tension and moves forward smoothly between the wheels, avoiding the uneven and eccentric paint layer caused by vibration, which helps to improve the quality of painting. The two ends of the PTFE steel wire hose are installed and connected by sleeve connection and metal tie ring clamping to facilitate the installation and maintenance of the paint circuit. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0033] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A device for producing composite enameled wire with adjustable painting passes, comprising a frame (11) and a paint tank (12), characterized in that: A wire to be dipped in paint (1) is arranged on the frame (11), a large paint injection pipe (2) is arranged on one side of the wire to be dipped in paint (1), a ball valve (3) is installed on the large paint injection pipe (2), one end of the large paint injection pipe (2) is connected to a first PTFE steel wire hose (4), the lower end of the first PTFE steel wire hose (4) is connected to a connecting hard pipe (5), a paint tank (12) is arranged at the lower end of the connecting hard pipe (5), the paint tank (12) is provided with an array of separated groove cavities (13), a push rod (6) is arranged on one side of the connecting hard pipe (5), an outer baffle plate (7) is arranged below the push rod (6), an inner baffle plate (8) is arranged below the outer baffle plate (7), the lower end of the paint tank (12) is connected to a second PTFE steel wire hose (9), and the lower end of the second PTFE steel wire hose (9) is installed with three converging cylinders (10).

2. The device for producing composite enameled wire with adjustable painting passes according to claim 1, characterized in that: The number of the groove cavities (13) is consistent with the number of paint passes, and a wiring block is movably provided on the front of the bottom of each groove cavity (13), and is inclined at 45 degrees and connected to the wall of the groove cavity (13) for support through a flip assembly. A U-shaped wiring notch is provided at the lower end of the wiring block body, and a handle is provided on the front of the wiring block body.

3. The device for producing composite enameled wire with adjustable painting passes according to claim 1, characterized in that: A cover plate made of RTFE material is provided on the bottom and front of the paint tank (12), so that a pool accommodating a certain amount of paint liquid can be formed at the bottom of each tank cavity (13).

4. The device for producing composite enameled wire with adjustable painting passes according to claim 1, characterized in that: A paint inlet metal pipe with three holes is arranged on the middle and lower section of the back wall of each groove cavity (13) toward the outside of the cavity and is connected to the groove cavity (13). A paint discharge metal pipe with three holes is arranged downward on the bottom wall of each groove cavity (13). A paint scraper mold and an electro-hydraulic proportional valve are arranged in the middle and upper part of the groove cavity (13).

5. The device for producing composite enameled wire with adjustable painting passes according to claim 1, characterized in that: The three holes of all paint-discharging metal pipes provided at the bottom of the paint tank (12) are respectively connected to three groups of collection boxes provided on the lower frame (11) through three groups of PTFE steel wire hoses, and a valve is provided between each PTFE steel wire hose and the collection box.

6. The device for producing composite enameled wire with adjustable painting passes according to claim 1, characterized in that: The three holes of all the paint inlet metal pipes on the back side of the paint tank (12) are connected to three steel paint supply main pipes arranged on the upper frame through three groups of PTFE steel wire hoses, and a solenoid valve is provided between each PTFE steel wire hose and the main pipe. The three steel paint supply main pipes are connected to three servo motor pumps mounted on the frame (11), and the three servo motor pumps are connected to the main paint box below through their own pipelines.

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