CN109300611B

CN109300611B - Split formula wire japanning mould

Info

Publication number: CN109300611B
Application number: CN201810908104.0A
Authority: CN
Inventors: 程积龙; 钱立海; 曹磊; 刘洋
Original assignee: Tongling Jingyuan Wire Die Co ltd
Current assignee: Anhui Juxin Zhizao Technology Co.,Ltd.
Priority date: 2018-08-10
Filing date: 2018-08-10
Publication date: 2020-08-21
Anticipated expiration: 2038-08-10
Also published as: CN109300611A

Abstract

The invention relates to a detachable wire painting die. The die comprises a die sleeve and a die core, wherein the die sleeve comprises an inner barrel with external threads and an outer barrel with internal threads, a positioning groove coaxial with the inner barrel is formed in the end face of the inner barrel, a pressing ring which extends towards the inner side of the outer barrel and is coaxial with the outer barrel is arranged on the end face of the outer barrel, the outer barrel is in threaded fit with the inner barrel, and the die core is pressed and fixed in the positioning groove through the pressing ring. The die sleeve can be matched with die cores of various specifications for wire painting. The invention has novel and simple structure, can greatly reduce the number of enterprise dies, improves the universality of the dies, reduces the cost of painting production of the wires of the enterprises, and is beneficial to the storage and management of the dies. The die can be used in the painting production process of wires with various shapes.

Description

Split formula wire japanning mould

Technical Field

The invention relates to a detachable wire painting die.

Background

Patent CN2017114885875 discloses a polycrystalline painting mold of a self-aligning center, which comprises a mold sleeve and a mold core made of a sintered body. When the mold is used for painting round wires, the mold is good in universality, namely, the painting mold with one size can paint round wires with various sizes; however, when the mold is used for painting special-shaped wires (such as wires with rectangular cross sections), the general type is poor, mainly because the size of the special-shaped wires is more complicated, and a painting mold of one size can only paint special-shaped wires of one size, which causes the disadvantages of large inventory quantity of painting molds, high management difficulty and the like.

Disclosure of Invention

In order to solve the technical problem, the invention provides a detachable wire painting mold.

In order to realize the purpose of the invention, the invention adopts the following technical scheme:

the utility model provides a split formula wire japanning mould, includes die sleeve and mold core, the die sleeve includes the interior barrel of outband screw thread and takes the outer barrel of internal thread, interior barrel head face seted up with the coaxial constant head tank of interior barrel, outer barrel head face is equipped with outside barrel inboard and extends and with the coaxial clamping ring of outer barrel, outer barrel and interior barrel screw-thread fit and pass through the clamping ring will the mold core pressure equipment is fixed in the constant head tank.

The further technical scheme is as follows: the inner side surface of the inner cylinder body is composed of a conical hole, the taper angle of the conical hole is 19-21 degrees, and the diameter of the conical hole is gradually reduced along the advancing direction of the conducting wire during painting.

The further technical scheme is as follows: the die sleeve is made of titanium alloy, and the die core is made of hard alloy.

The further technical scheme is as follows: the die core is provided with paint coating holes coaxial with the die sleeve, the aperture of each paint coating hole is smaller than the inner diameter of the inner barrel, the paint coating holes are sequentially divided into an entrance area and a sizing area along the advancing direction of the painted wires, and the aperture of the entrance area is gradually reduced and larger than the aperture of the sizing area along the advancing direction of the painted wires.

The invention has the beneficial effects that:

(1) when the die sleeve of the die is in a split structure, namely the die sleeve is divided into an inner sleeve and an outer sleeve, when the die sleeve is used, the die core is placed in the positioning groove, then the outer sleeve is screwed on the inner sleeve, namely, the die sleeve integrally plays a role in fastening the die core through the matching of internal threads on the outer sleeve and external threads on the inner sleeve. The die sleeve can be matched with die cores of various specifications for wire painting. The invention has novel and simple structure, can greatly reduce the number of enterprise dies, improves the universality of the dies, reduces the cost of painting production of the wires of the enterprises, and is beneficial to the storage and management of the dies. The mould can be used in the painting production process of wires with various shapes.

(2) The invention passes through the upper circle of the inner cylinder bodyThe cone angle of the taper hole is reasonably set, and the specific cone angle has the functions of storing insulating paint, compressing the insulating paint and automatically calibrating the die sleeve and the center of the lead. The invention greatly reduces the whole weight of the die by respectively selecting the die sleeve and the die core material, and simultaneously, because the taper angle of the conical hole on the inner cylinder body is reasonably arranged, the die can be freely suspended on the paint liquid when used for painting, namely, when the wire passes through the die sleeve, the paint liquid on the surface of the wire can generate a pulling force in the same direction with the row line direction of the wire in the inner hole of the die sleeve due to the self viscosity, and the pulling force and the gravity G of the die sleeve_{Die sleeve}And core gravity G_{Mold core}The sum is equal and keeps balance, so that the whole die is suspended on the upper plane of the insulating paint groove. Because the mould freely suspends on the lacquer liquid, so the mould has the effect of automatic correction when painting special-shaped wire, when the special-shaped wire deflects around self axis, the mould can deflect towards the same direction along with the special-shaped wire automatically to ensure that the clearance between the side surface of the special-shaped wire and the side surface of the inner hole of the mould is equal, ensure that the lacquer liquid amount at each position of the side surface of the special-shaped wire keeps equal and uniform, and obtain a wire product which does not produce uneven lacquer and has a smooth enameled wire surface.

(3) The mold core of the invention has the following functions: when the axis of the wire deviates from the axis of the die sleeve, due to the wedge effect, the axes of the wire and the die core tend to coincide under the pushing of the equal static pressure difference, so that equal and uniform paint liquid is kept in a gap between the wire and a paint hole of the die core, and then the paint film is formed by baking. The invention has the advantages of uniform paint film, no uneven paint, smooth surface of the enameled wire, easy control of the thickness of the paint film and the like.

Drawings

Fig. 1 is a schematic structural diagram of the inner cylinder body.

Fig. 2 is a schematic structural diagram of the outer cylinder body.

Fig. 3 is a schematic view of a mold core structure.

Fig. 4 is a schematic diagram of die case installation.

Fig. 5 is a schematic view of the combination of the die sleeve and the die core.

FIG. 6 is a schematic diagram of the self-alignment principle of the mold of the present invention.

Fig. 7a is a schematic cross-sectional view of a shaped wire in a normal state when it is painted.

Fig. 7b is a schematic cross-sectional view of the shaped conductor in a deflected state when painted.

The designations in the drawings have the following meanings:

10-die sleeve; 11-inner cylinder; 12-an outer cylinder; 13-positioning grooves; 14-a pressure ring; 20-a mold core; 21-painting holes; 211-an entrance zone; 212-sizing zone; 30-a wire; 40-lacquer liquid.

Detailed Description

The technical scheme of the invention is more specifically explained by combining the following embodiments:

as shown in fig. 1, 2, 3, 4, 5: the die sleeve comprises a die sleeve 10 and a die core 20, wherein the die sleeve 10 comprises an inner barrel body 11 with external threads and an outer barrel body 12 with internal threads, a positioning groove 13 coaxial with the inner barrel body 11 is formed in the end face of the inner barrel body 11, a pressing ring 14 which extends towards the inner side of the outer barrel body 12 and is coaxial with the outer barrel body 12 is arranged on the end face of the outer barrel body 12, the outer barrel body 12 is in threaded fit with the inner barrel body 11, and the die core 20 is pressed and fixed in the positioning groove 13 through the pressing ring 14.

When the die sleeve 10 of the die is in a split structure, namely the die sleeve is divided into the inner sleeve 11 and the outer sleeve 12, when the die sleeve is used, the die core 20 is firstly placed in the positioning groove 13, then the outer sleeve 12 is screwed on the inner sleeve 11, namely, the die sleeve 10 integrally plays a role of fastening the die core 20 through the matching of the internal thread on the outer sleeve 12 and the external thread on the inner sleeve 11. The die case 10 can be used with a variety of sizes of die cores 20 for wire painting. The invention has novel and simple structure, can greatly reduce the number of enterprise dies, improves the universality of the dies, reduces the cost of painting production of the wires of the enterprises, and is beneficial to the storage and management of the dies. The mould can be used in the painting production process of wires with various shapes.

As shown in fig. 5: the inner side surface of the inner cylinder body 11 is formed by a conical hole, the taper angle alpha of the conical hole is 19-21 degrees, 20 degrees is the best degree, and the diameter of the conical hole is gradually reduced along the advancing direction of the conducting wire during painting. The die sleeve 10 is made of titanium alloy, and the die core 20 is made of hard alloy.

According to the invention, through reasonably setting the taper angle of the conical hole in the inner cylinder body 11, the specific taper angle has the functions of storing insulating paint, compressing the insulating paint and automatically calibrating the center of the die sleeve and the wire. According to the invention, through respectively selecting the materials of the die sleeve 10 and the die core 20, the overall weight of the die is greatly reduced, and simultaneously, because the taper angle of the conical hole on the inner cylinder body 11 is reasonably arranged, the die can be freely suspended on paint liquid when used for painting, namely, when a lead passes through the die sleeve, the paint liquid on the surface of the lead generates a pulling force in the same direction as the row line direction of the lead in the inner hole of the die sleeve due to the self viscosity, as shown in fig. 5, the pulling force F is_{Pulling device}And the gravity G of the die sleeve_{Die sleeve}And core gravity G_{Mold core}The sum is equal and keeps balance, so that the whole die is suspended on the upper plane of the insulating paint groove. Because the die is freely suspended on the paint liquid, the die has the function of automatic correction when painting the special-shaped wire, namely when the special-shaped wire deflects around the axis of the special-shaped wire (as shown in figure 7 b), the die can automatically deflect towards the same direction along with the special-shaped wire so as to ensure that the gaps between the side surface of the special-shaped wire and the side surface of the inner hole of the die are equal (as shown in figure 7 a), and ensure that the amount of the paint liquid at each part of the side surface of the special-shaped wire is equal and uniform, thereby obtaining a wire product which does not generate uneven paint and has a smooth enameled wire surface.

The mold core 20 is provided with a painting hole 21 coaxial with the mold sleeve 10, the aperture of the painting hole 21 is smaller than the inner diameter of the inner cylinder 11, the painting hole 421 is sequentially divided into an inlet area 211 and a sizing area 212 along the advancing direction of the conductor during painting, and the aperture of the inlet area 211 is gradually reduced along the advancing direction of the conductor during painting and is larger than the aperture of the sizing area 212.

When the wire is painted, the static pressure created in the paint flow between the advancing wire 30 and the inner bore of the mold 10 centers the mold (as shown in fig. 6). When the wire passes through the die, the paint liquid forms a positive pressure N on the inner wall of the die, wherein M, L is a component of the positive pressure N, M is isostatic pressure, and when the content of the paint liquid on two sides of the wire is different, the positive pressure N has a pressure difference, so the isostatic pressure M also has a pressure difference. Due to the wedge effect, the axes of the wire and the mold core tend to coincide under the pushing of equal static pressure difference, so that the equal and uniform paint liquid is kept in the gap between the painting holes of the wire 30 and the mold core 20, and the mold has the advantages of uniform paint film, no paint deviation, smooth surface of the enameled wire, easy control of the thickness of the paint film and the like.

Claims

1. The utility model provides a split formula wire japanning mould, includes die sleeve (10) and mold core (20), its characterized in that: the die sleeve (10) comprises an inner barrel (11) with external threads and an outer barrel (12) with internal threads, a positioning groove (13) coaxial with the inner barrel (11) is formed in the end face of the inner barrel (11), a pressing ring (14) which extends towards the inner side of the outer barrel (12) and is coaxial with the outer barrel (12) is arranged on the end face of the outer barrel (12), the outer barrel (12) is in threaded fit with the inner barrel (11) and the die core (20) is fixed in the positioning groove (13) in a press fit mode through the pressing ring (14);

the inner side surface of the inner cylinder body (11) is formed by a conical hole, the cone angle of the conical hole is 19-21 degrees, and the diameter of the conical hole is gradually reduced along the advancing direction of the conductor during painting;

the die sleeve (10) is made of titanium alloy, and the die core (20) is made of hard alloy;

the die core (20) is provided with paint coating holes (21) coaxial with the die sleeve (10), the aperture of each paint coating hole (21) is smaller than the inner diameter of the inner cylinder body (11), the paint coating holes (421) are sequentially divided into an inlet area (211) and a sizing area (212) along the advancing direction of the conductor during painting, and the aperture of the inlet area (211) is gradually reduced along the advancing direction of the conductor during painting and is larger than the aperture of the sizing area (212);

the structural design of the die enables the die to be freely suspended on paint liquid when the die is used for painting, namely when a wire passes through the die sleeve (10), the paint liquid on the surface of the wire can generate a pulling force in the same direction with the row line direction of the wire in the inner hole of the die sleeve due to the viscosity of the paint liquid, and the pulling force F is_{Pulling device}Gravity G of die sleeve_{Die sleeve}And core gravityG_{Mold core}The sum is equal and keeps balance, so that the whole mould is suspended on the upper plane of the insulating paint groove.