A precision coating device for flat copper wire of high speed enamelling machine

Abstract

This invention discloses a precision coating device for flat copper wire in a high-speed enameling machine, relating to the field of copper wire coating technology. It includes: a mold cup arranged vertically, two mold cores, and two drying ovens; the two mold cores and the two drying ovens are symmetrically arranged about the mold cup; the diameters of the sizing zones of the two mold cores increase sequentially; a frame for mounting the drying ovens; a mounting plate for mounting the mold cup and fixedly connected to the frame; each mold core consists of two symmetrically arranged and independent cores; a switching unit located on the side of the mold core and used to drive the mold core to detach from the mold cup for mold core replacement; and a wire feeding unit for driving the flat copper wire to reciprocate. This invention can significantly shorten the production cycle of enameled wire and improve production efficiency.

Description

Technical Field

[0001] This invention relates to the field of copper wire coating technology, specifically to a precision coating device for flat copper wires used in high-speed enameling machines. Background Technology

[0002] Vertical enameling machines, due to their vertical layout, ensure that the copper wire is conveyed in a direction parallel to gravity, thus fundamentally eliminating the problem of coating quality caused by the bending of the copper wire due to gravity.

[0003] To meet the requirements for coating thickness and number of coating layers, the formation of the insulation layer of existing enameled wire requires multiple coatings (each coating being a few micrometers to tens of micrometers) and layer-by-layer curing and stacking to finally achieve the target total thickness. This results in a long copper wire movement path, large equipment footprint, numerous parts, and high production costs in the existing enameled wire production process. Although the problem of long copper wire movement path can be solved to some extent by using the method of reciprocating movement of copper wire, it also brings the problem of difficulty in replacing the coating mold (mold core). Summary of the Invention

[0004] The purpose of this invention is to provide a precision coating device for flat copper wires in a high-speed enameling machine, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a precision coating device for flat copper wire in a high-speed enameling machine, comprising: a mold cup arranged vertically, two mold cores, and two drying ovens; the two mold cores and the two drying ovens are symmetrically arranged about the mold cup; the diameters of the sizing zones of the two mold cores increase sequentially; a frame for mounting the drying ovens; a mounting plate for mounting the mold cup and fixedly connected to the frame; each mold core is composed of two symmetrically arranged and independent cores; a switching unit located on the side of the mold core and used to drive the mold core to detach from the mold cup for mold core replacement; and a wire feeding unit for driving the flat copper wire to reciprocate.

[0006] As a further embodiment of the present invention, the switching unit includes: a second mounting plate capable of docking with a first mounting plate; two support seats for mounting two cores respectively; the support seats and the second mounting plate are movably connected in the horizontal direction; the support seats are equipped with elastic elements for resetting; two sliding rods fixedly connected to the two support seats respectively; two sliders slidably connected to the second mounting plate in the vertical direction, and their sides are provided with inclined surfaces that can cooperate with the sliding rods; and a driving mechanism for driving the second mounting plate to move vertically and horizontally, thereby realizing the docking and disengagement of the second mounting plate from the first mounting plate.

[0007] As a further embodiment of the present invention, the mounting plate two is slidably connected to a slide block two in the vertical direction, and the support base is slidably connected to the slide block two in the horizontal direction; a spring two is fixedly connected to the top of the slide block two.

[0008] As a further embodiment of the present invention, the driving mechanism includes a cylinder, which is fixedly connected to a mounting plate and has a slide block fixedly connected to its output end; a slider is slidably connected to the inner side of the slide block, and a cylinder for driving the slider to move horizontally is fixedly mounted on the slide block; a plug is inserted into the slider, and the plug is fixedly connected to the mounting plate; a through groove is provided on the top of the slide block for the plug to move out.

[0009] As a further embodiment of the present invention, the elastic element includes a spring, which is sleeved on the slide rod.

[0010] As a further embodiment of the present invention, the ends of the two sliders away from the slider rod are fixedly connected to a fixing rod.

[0011] As a further embodiment of the present invention, a slot is provided on the top of the mounting plate, and the slot can be inserted into the fixing rod.

[0012] As a further embodiment of the present invention, the wire feeding unit includes a second frame, on which rollers are rotatably mounted at the top and bottom; sprockets are fixedly connected to the rotating shafts of the rollers; the two sprockets are connected by chain drive; a motor for providing power to one of the rollers is installed on the side of the second frame; and a tensioning mechanism is provided on the side of each roller.

[0013] As a further embodiment of the present invention, the tensioning mechanism includes a frame three, a slider three slidably mounted on the frame three, a tensioning wheel rotatably mounted on the slider three, and a spring three fixedly connected to the slider three.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This invention utilizes two symmetrical die cores about the die cup, with the diameter of the sizing zone increasing sequentially. These, along with a wire feeding unit driving the flat copper wire to reciprocate, allow the wire feeding unit to immediately drive the wire in the opposite direction for a second coating after the first coating is completed. The two die cores operate independently, eliminating the need to wait for die core replacement or path adjustment after each coating, significantly reducing process intervals. Because the copper wire transport direction aligns with gravity, the wire feeding unit can easily maintain wire tension. During the second coating process, the switching unit can simultaneously replace the die core required for the third coating without affecting the current coating operation (traditional equipment requires pausing coating to replace the die core), achieving parallel "coating-die changing," further shortening the overall production cycle and improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the connection structure of mounting plate one, mold cup, mounting plate two, and mold core of the present invention;

[0018] Figure 3 This is a schematic diagram showing the mating state of the mold core and mold cup of the present invention;

[0019] Figure 4 This is a schematic diagram of the switching unit state when the mold core is closed according to the present invention;

[0020] Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle;

[0021] Figure 6 This is a schematic diagram of the switching unit state when the mold core of the present invention is opened;

[0022] Figure 7 for Figure 6 Enlarged view of a section at point B in the middle;

[0023] Figure 8 This is a schematic diagram of the slider and the slider rod in the cooperation state of the present invention;

[0024] Figure 9 This is a schematic diagram of the drive mechanism structure of the present invention;

[0025] Figure 10 This is a schematic diagram of the mounting plate and slot structure of the present invention;

[0026] Figure 11 is a schematic diagram of the tensioning mechanism of the present invention;

[0027] Figure 12 is a schematic diagram of the working principle of the present invention.

[0028] The attached figures are labeled as follows:

[0029] 1-Frame, 2-Mounting Plate 1, 3-Mold Cup, 4-Mounting Plate 2, 5-Core, 6-Drying Oven, 7-Support Base, 8-Slide Rod, 9-Slider 1, 10-Spring 1, 11-Fixing Rod, 12-Spring 2, 13-Cylinder 1, 14-Slide 1, 15-Slider 2, 16-Cylinder 2, 17-Insertion Block, 18-Slot, 19-Frame 2, 20-Roller, 21-Sprocket, 22-Chain, 23-Motor, 24-Frame 3, 25-Slider 3, 26-Tension Wheel, 27-Spring 3, 28-Slider 2, 29-Flat Copper Wire. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-12 This invention provides a technical solution: a precision coating device for flat copper wire in a high-speed enameling machine, comprising a frame 1, a mounting plate 2, a die cup 3, a die core, a switching unit, and a wire feeding unit; the die cup 3, two die cores, and two drying ovens 6 are arranged vertically; the two die cores and two drying ovens 6 are symmetrically arranged about the die cup 3; the diameters of the sizing zones of the two die cores increase sequentially; one die core has a sizing zone diameter of φ1, and the other has a diameter of φ2, and φ2 > φ1, to meet the requirement of increasing wire diameter after multiple coatings of the flat copper wire 29; the frame 1 is used to install the drying ovens 6; the mounting plate 2 is used to install the die cup 3 and is fixedly connected to the frame 1; ensuring the stability of the die cup 3 during equipment operation; the die core consists of two symmetrically arranged and independent cores 5, facilitating the disassembly and replacement of the die core; the switching unit is located on the side of the die core and is used to drive the die core to detach from the die cup 3 for die core replacement; the wire feeding unit is used to drive the flat copper wire 29 to reciprocate, realizing automatic wire feeding and take-up of the flat copper wire 29.

[0032] refer to Figure 1 First, install the two sets of die cores to the top and bottom of the die cup 3 respectively. The inner diameter φ2 of the sizing zone of the lower die core is larger than the inner diameter φ1 of the sizing zone of the upper die core. Then, install the wire roller for winding the flat copper wire 29 to the bottom of the wire feeding unit, and pass the end of the flat copper wire 29 from bottom to top through the lower drying oven 6, the lower die core, the die cup 3, the upper die core, and the upper drying oven 6 in sequence, and then fix it to the top of the wire feeding unit. (Refer to...) Figure 12After preparation, the wire feeding unit drives the copper wire to move from bottom to top. During the first coating operation, the lower mold core does not work. After the copper wire enters the mold cup 3, the paint stored in the mold cup 3 adheres to the surface of the copper wire. Then, as the copper wire continues to move upward, the upper mold core trims the paint on the surface of the copper wire to ensure coating accuracy. Then, the copper wire enters the upper drying oven 6. The drying oven 6 heats and cures the paint film on the surface of the flat copper wire 29. The temperature sensor monitors the drying oven 6 in real time. The internal temperature is measured and the signal is transmitted to the controller, which controls the heating power of the heating tube to keep the temperature of the drying oven 6 within the preset range; then the top of the unwinding unit rewinds the copper wire after the first coating is completed; after all the copper wire on the wire roller is released and the first coating of the copper wire is completed, the unwinding unit drives the copper wire to move from top to bottom to perform the second coating operation; during the second coating operation, since the paint applied to the surface of the copper wire in the first coating has been completely cured, the thickness of the dry film is always less than the thickness of the wet film before curing. Therefore, when the copper wire moves from top to bottom, the upper die core will not scratch the copper wire. After the paint in the die cup 3 adheres to the surface of the copper wire, the lower die core then trims the paint on the surface of the copper wire to ensure coating accuracy; the inner diameter φ2 of the sizing area of ​​the lower die core matches the wet film thickness during the second coating; then the copper wire enters the lower drying oven 6 for the second curing to complete the second coating, and the bottom of the unwinding unit rewinds the copper wire after the second coating; during the second coating process, the switching unit operates, first driving the upper core 5 to move upward and disengage from the die cup 3, and then driving the upper core 5 to move upward and disengage from the die cup 3. The two cores 5 move outward to avoid contact with the copper wire during subsequent outward movement, thus removing the upper mold core. The switching unit then installs the matching mold core for the next coating operation on top of the mold cup 3. After the second coating operation is completed, the wire feeding unit drives the copper wire from bottom to top for the third coating, repeating this process until the paint thickness on the copper wire surface reaches the specified requirement after multiple coatings. This invention uses two mold cores symmetrical about the mold cup 3 with progressively increasing diameters in the sizing area, which, in conjunction with the wire feeding unit, drive the flat copper wire 29 to reciprocate. This allows the wire feeding unit to immediately drive the copper wire in the opposite direction for the second coating after the first coating is completed, enabling the two mold cores to work independently without waiting for mold core replacement or path adjustment after a single coating, significantly reducing process intervals. Because the copper wire conveying direction is consistent with the direction of gravity, the wire feeding unit can easily maintain the copper wire tension. During the second coating process, the switching unit can simultaneously replace the mold core required for the third coating without affecting the current coating operation (traditional equipment requires pausing coating when changing mold cores), achieving "coating- The parallel "mold changing" further shortens the overall production cycle and improves production efficiency; traditional vertical enameling machines need to be equipped with more conveying and drying components to meet long-path coating requirements, resulting in numerous parts and a large footprint.This equipment, through its integrated design of dual-core and reciprocating coating, significantly simplifies the equipment structure while ensuring the number and thickness of coating layers, reducing floor space and the costs of parts procurement and maintenance.

[0033] Specifically, such as Figure 2 , Figures 4-9 As shown, the switching unit includes a second mounting plate 4, two support seats 7, two slide rods 8, two sliders 9, and a drive mechanism; the second mounting plate 4 can dock with the first mounting plate 2; the two support seats 7 are respectively used to install two cores 5; the support seats 7 and the second mounting plate 4 are movably connected in the horizontal direction; the support seats 7 are equipped with elastic elements for resetting; the two slide rods 8 are respectively fixedly connected to the two support seats 7; the two sliders 9 are slidably connected to the second mounting plate 4 in the vertical direction, and their sides are provided with inclined surfaces that can cooperate with the slide rods 8; the drive mechanism is used to drive the second mounting plate 4 to move vertically and horizontally, thereby realizing the docking and disengagement of the second mounting plate 4 and the first mounting plate 2; when it is necessary to replace the mold core required for the third coating, the drive mechanism first drives the second mounting plate 4 to move upward, so that the second mounting plate 4 disengages from the first mounting plate 2; losing the mounting plate After the limit of 12, the elastic force stored in the elastic element is released, and the support seat 7 drives the core 5 to move outward; the two cores 5 move upward to the outside of the copper wire, and then the drive mechanism drives the mounting plate 2 4 to move away from the mold cup 3, and then installs the core 5 required for the next coating onto the mounting plate 2 4; then the drive mechanism drives the mounting plate 2 4 to move directly above the mounting plate 12, and then drives the mounting plate 2 4 to move downward. The slider 1 9 first contacts the top side wall of the mounting plate 12. When the mounting plate 2 4 continues to move downward, the slider 1 9 moves upward relative to the slide rod 8. The inclined surface of the slider 1 9 drives the slide rod 8 to move inward, so that the two cores 5 close. Then the mounting plate 2 4 drives the two cores 5 to fit against the mold cup 3; so that the mold core and the mold cup 3 cooperate. After the second coating operation is completed, the third coating operation can be started immediately.

[0034] Specifically, such as Figure 5 As shown, mounting plate 24 is slidably connected to slide block 28 in the vertical direction, and support base 7 is slidably connected to slide block 28 in the horizontal direction; spring 22 is fixedly connected to the top of slide block 28; with the setting of slide block 28 and spring 22, after the mold core and mold cup 3 are engaged, mounting plate 24 can continue to move closer to mounting plate 12, and mounting plate 12 can apply a pre-tightening force to slide block 28 and core 5 in conjunction with spring 212, so that the mold core and mold cup 3 fit more tightly.

[0035] Specifically, such as Figure 4 and Figure 9As shown, the driving mechanism includes a cylinder 13, which is fixedly connected to a mounting plate 2, and its output end is fixedly connected to a slide block 14. A slider 15 is slidably connected to the inner side of the slide block 14, and a cylinder 16 for driving the slider 15 to move horizontally is fixedly mounted on the slide block 14. A plug 17 is inserted into the slider 15, and the plug 17 is fixedly connected to the mounting plate 4. A through slot is provided on the top of the slide block 14 for the plug 17 to move out. When the driving mechanism is working, the cylinder 13 first drives the slide block 14, the slider 15, the cylinder 16, the plug 17, and the mounting plate 4 to move vertically. The process involves: 1) separating mounting plate 2 from mounting plate 1, allowing core 5 to move outwards and open; 2) driving slider 2 15, insert 17, and mounting plate 2 4 horizontally to the outside of mounting plate 1, lifting mounting plate 2 4 upwards, allowing insert 17 to be removed from the through slot, and mounting plate 2 4 to be removed entirely; 3) installing the next core 5 onto mounting plate 2 4, inserting insert 17 from the through slot into slider 2 15, and then cylinder 2 16 cooperating with cylinder 1 13 to reconnect mounting plate 2 4 with mounting plate 1, matching the mold core with the mold cup 3.

[0036] Specifically, such as Figure 5 As shown, the elastic element includes a spring 10, which is sleeved on the slide rod 8; one end of the spring 10 is fixed to the support base 7, and the other end abuts against the mounting plate 2 4.

[0037] Specifically, such as Figure 5 As shown, the ends of the two sliders 9 away from the slider 8 are fixedly connected to a fixing rod 11; the fixing rod 11 allows the two sliders 9 to move synchronously.

[0038] Specifically, such as Figure 10 As shown, as a further embodiment of the present invention, a slot 18 is provided on the top of the mounting plate 2, and the slot 18 can be inserted into the fixing rod 11; the insertion of the fixing rod 11 into the slot 18 can make the connection between the mounting plate 4 and the mounting plate 2 more stable.

[0039] Specifically, such as Figure 1 and Figure 11As shown, the wire feeding unit includes a frame 19, with rollers 20 rotatably mounted on both the top and bottom of the frame 19; sprockets 21 are fixedly connected to the rotating shafts of the rollers 20; the two sprockets 21 are connected by a chain 22; a motor 23 for providing power to one of the rollers 20 is mounted on the side of the frame 19; a tensioning mechanism is provided on the side of each roller 20; the tensioning mechanism includes a frame 24, with a slider 25 slidably mounted on the frame 24, a tensioning wheel 26 rotatably mounted on the slider 25, and a spring 27 fixedly connected to the slider 25; during the preparation stage, the wire roller for winding flat copper wire 29 is installed on the lower roller 20, and the other end of the wire roller is fixed to the upper roller 20; the motor 23 is started, and the motor 23 drives the roller 20 connected to it to rotate. Through the transmission action of the sprockets 21 and the chain 22, the two rollers 20... The synchronous rotation drives the flat copper wire 29 upward; the lower roller 20 rotates to release the flat copper wire 29, while the upper roller 20 rotates to rewind the coated flat copper wire 29. During the movement of the flat copper wire 29, the tensioning wheel 26 in the tensioning mechanism remains in contact with the flat copper wire 29 under the elastic force of the spring 27, providing tension and preventing the flat copper wire 29 from slackening. The slider 25 can slide along the frame 24. When the tension of the flat copper wire 29 changes, the tensioning wheel 26 compresses or stretches the spring 27 through the slider 25, buffering the tension change and ensuring the stability of the flat copper wire 29 during the coating process, thus improving the coating quality.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision coating apparatus for flat copper wire for high speed enamelling machine, characterized in that: The utility model relates to a kind of moulding machine for making bra cup, including: Mould cup (3) arranged in vertical direction, two mould cores and two drying furnaces (6);Two the mould core and two the drying furnace (6) are symmetrically arranged about mould cup (3);The diameter of two the mould core sizing area increases in turn; Frame body (1) for installing drying furnace (6); Mounting plate one (2) for installing mould cup (3), and fixedly connected with frame body (1); The mould core is composed of two symmetrically arranged and independent core bodies (5); Switching unit is arranged on the side of mould core and is used to drive mould core and mould cup (3) to separate, replace mould core; Wire laying unit is used to drive flat copper wire (29) reciprocating movement; The switching unit includes: Mounting plate two (4) can be butted with mounting plate one (2); Two support seats (7) are respectively used to install two core bodies (5);The support seat (7) is movably connected with mounting plate two (4) in horizontal direction;Resilient member for resetting is installed on the support seat (7). Two slide rods (8) are respectively fixedly connected with two support seats (7); Two sliding blocks one (9) are slidably connected with mounting plate two (4) in vertical direction, and the side edge of which is provided with inclined surface capable of cooperating with slide rod (8); Driving mechanism is used to drive mounting plate two (4) to move vertically and horizontally, so as to realize the butt joint and separation of mounting plate two (4) and mounting plate one (2); The mounting plate two (4) is slidably connected with slide seat two (28) in vertical direction, and the support seat (7) is slidably connected with slide seat two (28) in horizontal direction;Spring two (12) is fixedly connected to the top of slide seat two (28). The driving mechanism includes cylinder one (13), and the cylinder one (13) is fixedly connected with mounting plate one (2), and the output end is fixedly connected with slide seat one (14);Slide block two (15) is slidably connected to the inner side of slide seat one (14), and cylinder two (16) for driving slide block two (15) to move horizontally is fixedly installed on the slide seat one (14);Insert block (17) is inserted into slide block two (15), and the insert block (17) is fixedly connected with mounting plate two (4);Through groove is formed in the top of slide seat one (14) for the insert block (17) to move out.

2. A precision coating apparatus for flat copper wire for high speed enamelling machine as claimed in claim 1 wherein: The resilient member includes spring one (10), and the spring one (10) is sleeved on slide rod (8).

3. A precision coating apparatus for flat copper wire for high speed enamelling machine as claimed in claim 1 wherein: Two the sliding blocks one (9) are fixedly connected with fixed rod (11) at one end away from slide rod (8).

4. A precision coating apparatus for flat copper wire for high speed enamelling machine as claimed in claim 3 wherein: The top of mounting plate one (2) is provided with insertion slot (18), and the insertion slot (18) can be inserted with fixed rod (11).

5. A precision coating apparatus for flat copper wire for high speed enamelling machine as claimed in claim 1 wherein: The wire laying unit includes frame body two (19), and roller body (20) is rotatably installed on the top and bottom of frame body two (19);Chain wheel (21) is fixedly connected to the rotation shaft of roller body (20);Two chain wheels (21) are drivingly connected through chain (22);Motor (23) for providing power for one of roller bodies (20) is installed on the side of frame body two (19);Tensioning mechanism is arranged on the side of roller body (20).

6. A precision coating apparatus for flat copper wire for high speed enamelling machine as claimed in claim 5 wherein: The tensioning mechanism comprises a frame body three (24), the frame body three (24) is slidably installed with a sliding block three (25), the sliding block three (25) is rotatably installed with a tensioning wheel (26), and the sliding block three (25) is fixedly connected with a spring three (27).

Images