CN113601772A

CN113601772A - Glue injection mold of magnetism-moving pressure regulating device and glue injection sealing production process based on same

Info

Publication number: CN113601772A
Application number: CN202110791163.6A
Authority: CN
Inventors: 刘洪安; 孙翀; 谢波; 王肖肖; 谢雪军; 罗潭; 李齐新
Original assignee: Hunan Ke Tai Electric Co ltd
Current assignee: Hunan Ke Tai Electric Co ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2021-11-05
Anticipated expiration: 2041-07-13
Also published as: CN113601772B

Abstract

Move magnetism pressure regulating device injecting glue mould and sealed production technology of injecting glue based on this mould, including bottom plate and coupling mechanism, bottom plate upper portion is passed through coupling mechanism and die cavity board and can is dismantled the connection, the other end and the apron of die cavity board can be dismantled the connection, bottom plate, apron and die cavity board link to each other and form the pouring and hold the chamber, the opposite face of bottom plate and apron all is equipped with the circle recess of three equidistance along length direction, it has the inner tube that is used for the winding coil to inlay between the circle recess, the inner tube is three and a font and arranges, and the inner tube both ends are equipped with the end cap that can seal, end cap and bottom plate, apron butt. The three coils are synchronously cast and molded, the structure is compact, the appearance is attractive, and the glue injection sealing process is exquisite.

Description

Glue injection mold of magnetism-moving pressure regulating device and glue injection sealing production process based on same

Technical Field

The invention relates to the field of production of cylindrical coils of a magnetism-shifting and pressure-regulating device, in particular to a glue injection mold of the magnetism-shifting and pressure-regulating device and a glue injection sealing production process based on the mold.

Background

The epoxy resin vacuum casting process technology is an important process technology of a dry sealing insulation system of electric and electronic components and devices; the resin casting mold has the characteristics of short manufacturing period, low cost and suitability for manufacturing products and products with complex shapes.

At present, the known winding method of resin-cast coils is as follows: fixing the inner die and the bottom plate of the transformer coil on a winding machine, starting to wind the coil, after the coil is wound, disassembling the semi-finished coil provided with the inner die and the bottom plate from the winding machine, and turning to a die filling procedure to assemble a (soft) outer die (about 0.5-2 mm in thickness). A rubber plate is added on the bottom plate, the joint of the outer die and the bottom plate is fastened by bolts, and sealant is required to be smeared for preventing untight sealing. Because the (soft) outer mould is soft and easy to deform, even if sealant is coated, the leakage cannot be completely avoided, and the appearance and the internal quality of the cast coil cannot be guaranteed.

In the magnetic shifting voltage regulator, the characteristic of realizing variable voltage and choke flow by using coils is mainly utilized, the important point of the coils for realizing the functions is to have good insulativity, the insulation treatment of the coils in the prior art generally adopts cast epoxy resin, but most of the coils are single-phase coils which are subjected to insulation treatment one by one, for the equipment designed with a plurality of coils, a plurality of separately cast coils are required to be combined to form a specific function unit, the mode often causes the appearance structure of the equipment to be not compact and stable enough, the possibility of deviation of the assembly position exists, and the integral insulation effect is unstable; in the use process, the shaking of the coils caused by unbalanced stress of the coils can damage the internal insulation of the coils, so that the interlayer or turn-to-turn short circuit of the coils is caused to be arc-discharged, and the equipment cannot be normally used.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: overcome prior art's not enough, provide one kind and provide move magnetism pressure regulating device injecting glue mould and because device's the sealed production technology of injecting glue, the effect that the mould reaches: three coils are integrated, synchronous casting molding is realized, the structure is compact, the appearance is attractive, and the glue injection sealing process is exquisite.

The technical scheme adopted by the invention for solving the technical problems is as follows: move magnetism pressure regulating device injecting glue mould and sealed production technology of injecting glue based on this mould, including bottom plate and coupling mechanism, bottom plate upper portion is passed through coupling mechanism and die cavity board and can is dismantled the connection, the other end and the apron of die cavity board can be dismantled the connection, bottom plate, apron and die cavity board link to each other and form the pouring and hold the chamber, the opposite face of bottom plate and apron all is equipped with the circle recess of three equidistance along length direction, it has the inner tube that is used for the winding coil to inlay between the circle recess, the inner tube is three and a font and arranges, and the inner tube both ends are equipped with the end cap that can seal, end cap and bottom plate, apron butt.

Preferably, the cavity plate comprises a front cavity plate and a rear cavity plate which are oppositely arranged, three groups of semi-cylindrical recesses which are linearly arranged are punched on the opposite surfaces of the front cavity plate and the rear cavity plate, the recesses on the two sides of the front cavity plate and the rear cavity plate form a cavity for accommodating the coil, the size of the cavity is matched with the outer diameter of the inner cylinder, and the inner cylinder is ensured not to have position deviation. The cover plate, the bottom plate, the front cavity and the rear cavity are made of steel plates, and are formed by washing through a milling machine, the mirror surface inside the cavity is smooth and flat, and demolding is easy.

Preferably, the plugs are divided into an upper plug and a lower plug. The plug is divided into an upper plug and a lower plug, the upper plug comprises a first component, a second component, a nut and a silica gel component, the first component and the second component are abutted, the outer walls of the first component and the second component form a trapezoidal cavity, the silica gel component is arranged in the trapezoidal cavity, the bottom of the silica gel component is abutted with the inner wall of the inner barrel, the second component is provided with a threaded lead screw, the threaded lead screw sequentially penetrates through the silica gel component and the first component, and the nut is sleeved on the threaded lead screw; the lower plug comprises a third component, a fourth component, a screw and nut silica gel, the third component is abutted against the fourth component, the outer walls of the third component and the fourth component form a trapezoidal cavity, and the silica gel component is arranged in the trapezoidal cavity; and the silica gel has a conical radian, when the third component and the fourth component are closed, the silica gel is compressed to diffuse all around, and the silica gel is attached to the inner wall of the inner barrel. The upper and lower plugs can effectively prevent resin glue from entering the inner barrel.

Preferably, three leading copper bars are arranged on the coil along the height direction. The front side bolt of the front cavity is fixed with a movable block, a square hole is arranged on the movable block, and a lead copper bar is led out from the small square hole.

Preferably, the outer sides of the front cavity, the rear cavity and the bottom plate are provided with suspension arms, and the outer sides of the cover plate and the plug are provided with hanging rings.

Preferably, the connecting mechanism is a positioning pin and a positioning hole.

Preferably, the glue injection sealing production process based on the glue injection mold of the magnetism-moving and pressure-regulating device comprises the following steps:

s1, cleaning the bottom plate, installing a sealing strip on a sealing notch of the bottom plate, coating a layer of release agent on the whole surface, and positioning the inner cylinder wound with the coil in three circular grooves on the bottom plate in sequence;

s2: cleaning the rear cavity and the front cavity, coating a release agent, hoisting the suspension arm to align to a positioning pin and a positioning hole on the bottom plate, and connecting the bottom plate, the rear cavity and the front cavity into a whole by using a screw rod;

s3: cleaning the loose piece, coating a layer of release agent, installing the loose piece on the front part of the front cavity by using a bolt, and leading the copper bar to extend out from the small square hole and firmly fixing the loose piece;

s4: cleaning a lower plug, sequentially placing a third component, a silica gel component and a fourth component into the inner cylinder in sequence, sequentially penetrating a bolt into the third component, the fourth component, the silica gel component and the bottom plate, sleeving a nut on the bolt, slowly screwing, and tightly attaching the silica gel component to the lower inner wall of the inner cylinder along with the slow deformation of the silica gel component;

s5: cleaning the cover plate, coating a layer of release agent, and installing the release agent on the top of the front cavity and the top of the rear cavity by using bolts;

s6: further cleaning an upper plug, coating a layer of release agent, sequentially placing a first component, a second component and a silica gel component into the inner cylinder, sequentially penetrating a threaded screw rod arranged on the components through the silica gel component and the first component, sleeving a nut on the threaded screw rod, slowly screwing, and tightly attaching the silica gel component to the upper inner wall of the inner cylinder along with the slow deformation of the silica gel component; and pouring the coil to ensure that the pouring cavity is filled with resin.

The invention has the beneficial effects that:

1. the coils of the magnetic shift voltage regulating device are poured by epoxy resin, the coils are completely wrapped by the epoxy resin, and the process of vacuum glue injection is adopted, so that the coil interlayer or turn-to-turn insulation sealing performance is good, the stability is high, and the looseness is not easy to occur

2. The mold and the cast coil are easy to assemble, resin glue leakage can be better avoided in the casting process, the good appearance and the internal quality of the cast coil are practically guaranteed, the casting can be effectively finished under vacuum equipment, and the internal stress of the coil is uniformly distributed without generating sink marks;

3. the insulation and heat dissipation can meet the product requirements; the mold does not affect air gaps and air bubbles inside and on the surface of a cast product, so that cracks are prevented from being generated;

4. the coil structure is compact after pouring, the coil position deviation does not exist, the coil structure is integrated after forming, the coils are arranged in three in one mode, the appearance is attractive, the A/B/C three-phase coil is balanced under the influence of electromagnetic induction in the use process of dry type voltage regulation soft starting, the failure rate of the starter is reduced, and the service life is prolonged.

5. After pouring, demoulding is easy to carry out, and all parts of a die cavity are in smooth transition; high processing efficiency and low labor intensity of workers in the processes of die filling and demolding.

Drawings

FIG. 1 is a side view of an assembled anatomical structure according to example 1 of the present invention;

FIG. 2 is a top view of the front and rear cavities of example 1 of the present invention;

FIG. 3 is a plan view of a base plate in example 1 of the present invention;

FIG. 4 is a top view of the cover plate of embodiment 1 of the present invention;

FIG. 5 is a partial side view of embodiment 1 of the present invention;

FIG. 6 is a pictorial view of an upper plug in an embodiment of the present invention;

FIG. 7 is a view of a lower plug in an embodiment of the present invention;

FIG. 8 is a diagram of a silicone gel assembly in an embodiment of the present invention;

FIG. 9 is a view of a loose piece in an embodiment of the present invention;

FIG. 10 is a view of a loose piece two in an embodiment of the present invention;

in the figure: 1-cover plate, 2-front cavity plate, 3-rear cavity plate, 4-bottom plate, 5-inner cylinder, 6-upper plug, 7-lower plug, 8-first component, 9-silica gel component, 10-second component, 11-nut, 12-third component, 13-screw, 14-fourth component, 15-loose piece, 101-supporting leg, 102-circular groove, 104-positioning pin, 105-prying port, 106-glue injection port, 107-lifting ring, 108-air outlet hole, 110-sealing notch, 111-lifting arm, 112-lead, 113-top hole, 114-small square hole and 115-lead copper bar.

Detailed Description

The invention is further explained with reference to the drawings and the embodiments.

As shown in fig. 1, the present embodiment is a glue injection mold for a magnetic shift pressure regulating device, which includes a bottom plate 4 and a connecting mechanism, wherein the upper portion of the bottom plate 4 is detachably connected to a cavity plate through the connecting mechanism, the other end of the cavity plate is detachably connected to a cover plate 1, the bottom plate 4, the cover plate 1 and the cavity plate are connected to form a casting cavity, three equidistant circular grooves 102 are respectively formed in the length direction of the opposite surfaces of the bottom plate 4 and the cover plate 1, inner cylinders 5 for winding coils are embedded between the circular grooves 102, the inner cylinders 5 are cylindrical, and are arranged in a straight line, three wires 112 are wound on the inner cylinders 5 to form coils, and each coil is respectively provided with three lead copper bars 115; sealing the three coils by using epoxy resin glue to form an A/B/C three-phase coil whole; and sealable plugs are arranged at two ends of the inner cylinder, and the plugs are abutted with the bottom plate 4 and the cover plate 1.

The coil casting cavity plate is characterized in that the cavity plate comprises a front cavity plate 2 and a rear cavity plate 3 which are oppositely arranged, three groups of semi-cylindrical concave parts which are linearly arranged are punched on the opposite surfaces of the front cavity plate 2 and the rear cavity plate 3, and the concave parts on the two sides of the front cavity plate 2 and the rear cavity plate 3 form a casting cavity for accommodating a coil.

As shown in fig. 3 and 4, the cover plate 1 and the bottom plate 4 are both provided with circular grooves 102, the diameter of the circular groove 102 is slightly larger than the diameter of the cylinder of the inner cylinder 5, and both ends of the inner cylinder 5 exceed the epoxy resin glue by about 2cm, both ends of the inner cylinder 5 can be embedded into the circular grooves 102 on the cover plate 1 and the bottom plate 4, so that the cover plate 1 and the bottom plate 4 can clamp the inner cylinder 5 therebetween, and the middle part of the cover plate 1 is provided with a penetrating glue injection port 106.

As shown in fig. 5, the lead 112 of the present embodiment is made of a wire glass copper wire, three tapping terminals are extracted at approximately quartering points on the lead 112 and are respectively welded to the leading copper bar 115, the leading copper bar 115 is not completely sealed by epoxy resin glue, and half of the leading copper bar 115 is exposed to the outside, so that the coil is conveniently connected to an external circuit, and 6 loose pieces 15 are provided to fix the coil leading copper bar 115.

As shown in fig. 9 and 10, the loose piece 15 includes a loose piece one and a loose piece two, and is fixed on the front side of the front cavity 2 through bolts, a small square hole 114 is provided on the loose piece 15, and a lead copper bar 115 is led out from the small square hole 114; the movable block 15 is also provided with a prying opening 105, a positioning pin 104, a top position hole 113 and a sealing notch 110, and the mold opening is carried out by adopting the prying opening 105.

In this embodiment, the front cavity 2, the rear cavity 3 and the bottom plate 4 are all provided with suspension arms 111, and the cover plate 1, the upper plug 6 and the lower plug 7 are all provided with suspension rings 107, so that the lifting is facilitated.

As shown in fig. 6, the upper plug 6 includes a first component 8, a second component 10, a nut 11 and a silica gel component 9, the first component 8, the second component 10 and the silica gel component 9 are precisely machined to have a tapered radian, the first component and the second component are abutted, the outer walls of the first component and the second component form a trapezoidal cavity, the silica gel component is arranged in the trapezoidal cavity, the bottom of the silica gel component is abutted with the inner wall of the inner cylinder, the second component is provided with a threaded lead screw, the threaded lead screw sequentially penetrates through the silica gel component and the first component, and the nut is sleeved on the threaded lead screw; when the first component 8 and the second component 10 are close to each other, the silica gel component 9 is compressed to diffuse all around, and the silica gel component 9 is tightly attached to the inner wall of the inner barrel 6.

As shown in fig. 7, the lower plug 7 includes a third component 12, a fourth component 14, a screw 13, a nut 11 and a silica gel component 9, the third component 12, the fourth component 14 and the silica gel component 9 are precisely machined to have a conical radian, the third component and the fourth component are abutted, outer walls of the third component and the fourth component form a trapezoidal cavity, and the silica gel component is arranged in the trapezoidal cavity; and the silica gel has a conical radian, the compressed silica gel component 9 is diffused all around when the third component 12 and the fourth component 14 are closed, the silica gel component 9 is attached to the inner wall of the inner cylinder to ensure that the compressed silica gel component 9 is diffused all around when the third component 12 and the fourth component 14 are closed, and the silica gel component 9 is tightly attached to the inner wall of the inner cylinder 5.

In this embodiment, a glue injection sealing production process based on a glue injection mold of a moving magnet pressure regulating device includes the following steps:

firstly, cleaning a bottom plate 4, installing a circle of sealing strip on a sealing groove opening 110 of the bottom plate, then coating a layer of release agent on the whole surface, welding three supporting legs 101 at the lower end of the bottom plate 4 by using steel plates, and sequentially placing an inner cylinder 5 wound with a coil in three circular grooves 102 on the bottom plate 4.

And cleaning the rear cavity 3, coating a layer of release agent, hoisting the suspension arm 11 to align the positioning pin 104 and the positioning hole 103 on the bottom plate 4, and connecting the bottom plate 4 and the rear cavity 3 into a whole by using a screw rod.

Further cleaning the front cavity 2, coating a layer of release agent, hoisting a suspension arm 111 to align the positioning pins 104 and the positioning holes 103 on the bottom plate 4 and the rear cavity 3, and connecting the front cavity 2, the bottom plate 4 and the rear cavity 3 into a whole by using bolts.

The six loose pieces 15 are further cleaned, a layer of release agent is coated, the loose pieces are installed on the front portion of the front cavity 2 through bolts, and the lead copper bars 115 extend out of the small square holes 114 and are firmly fixed.

The lower plug 7 is further cleaned, the third component 12, the silica gel component 9 and the fourth component 14 are sequentially and sequentially placed in the inner barrel 5, the bolt 13 sequentially penetrates through the third component 12, the fourth component 14, the silica gel component 9 and the bottom plate 4, the nut 11 is sleeved on the bolt 13 and is slowly screwed, and the silica gel component 11 is tightly attached to the lower inner wall of the inner barrel 5 along with the slow deformation of the silica gel component 9.

Further cleaning the cover plate 1, coating a layer of release agent, and installing the release agent on the top of the front cavity 2 and the top of the rear cavity 3 by using bolts. The cover plate 1 is provided with a prying opening 105, a sealing notch 110, a round groove 102, a glue injection opening 106, an air outlet 108 and a positioning pin 104.

The upper plug 6 is further cleaned, a layer of release agent is coated, the first component 8, the second component 10 and the silica gel component 9 are sequentially placed in the inner barrel 5, the diameter of the bottom of the first component 8 is larger than the diameter of a circular groove hole of the cover plate 1, the inner barrel 5 cannot fall into, a threaded lead screw is matched on the second component 10, the silica gel component 9 and the first component 8 are sequentially penetrated, a nut 11 is sleeved on the threaded lead screw and is slowly screwed down, the silica gel component 9 slowly deforms, the silica gel component 9 tightly clings to the upper inner wall of the inner barrel 5, a coil is poured along the glue injection port 106, and the pouring cavity is filled with resin.

The present invention is not limited to the above embodiments, and various combinations and modifications of the above technical features may be provided for those skilled in the art, and modifications, variations, equivalents, or uses of the structure or method of the present invention in other fields without departing from the spirit and scope of the present invention are included in the protection scope of the present invention.

Claims

1. Move magnetism pressure regulating device injecting glue mould, its characterized in that, including bottom plate and coupling mechanism, bottom plate upper portion is passed through coupling mechanism and cavity board and can be dismantled the connection, the other end and the apron of cavity board can be dismantled the connection, bottom plate, apron and cavity board link to each other and form the pouring and hold the chamber, the opposite face of bottom plate and apron all is equipped with the circle recess of three equidistance along length direction, it has the inner tube that is used for the winding coil to inlay between the circle recess, the inner tube is three and a font and arranges, and the inner tube both ends are equipped with the end cap that can seal, end cap and bottom plate, apron butt.

2. The mold for injecting glue of a magnetic displacement and pressure regulating device according to claim 1, wherein the cavity plate comprises a front cavity plate and a rear cavity plate which are oppositely arranged, three sets of semi-cylindrical recesses which are linearly arranged are punched on the opposite surfaces of the front cavity plate and the rear cavity plate, and the recesses on both sides of the front cavity plate and the rear cavity plate form a cavity for accommodating the coil.

3. The glue injection mold of the magnetism-moving and pressure-regulating device according to claim 1, wherein the plug is divided into an upper plug and a lower plug, the upper plug comprises a first component, a second component, a nut and a silica gel component, the first component and the second component are abutted, the outer walls of the first component and the second component form a trapezoidal cavity, the silica gel component is arranged in the trapezoidal cavity, the bottom of the silica gel component is abutted with the inner wall of the inner barrel, the second component is provided with a threaded lead screw, the threaded lead screw sequentially penetrates through the silica gel component and the first component, and the nut is sleeved on the threaded lead screw; the lower plug comprises a third component, a fourth component, a screw and nut silica gel, the third component is abutted against the fourth component, the outer walls of the third component and the fourth component form a trapezoidal cavity, and the silica gel component is arranged in the trapezoidal cavity; and the silica gel has a conical radian, when the third component and the fourth component are closed, the silica gel is compressed to diffuse all around, and the silica gel is attached to the inner wall of the inner barrel.

4. The glue injection mold of the magnetism-moving and pressure-regulating device according to claim 2, wherein three lead copper bars are arranged on the coil along the height direction.

5. The glue injection mold of the magnetism-moving and pressure-regulating device according to claim 3, wherein a movable block is fixed on a bolt on the front side of the front cavity, a square hole is arranged on the movable block, and a lead copper bar is led out from the square hole and connected with an external circuit.

6. The glue injection mold of the magnetism-moving and pressure-regulating device according to claim 4, wherein suspension arms are arranged on the outer sides of the front cavity, the rear cavity and the bottom plate, and suspension rings are arranged on the outer sides of the cover plate and the plug.

7. The mold for injecting glue of a device for shifting magnetism and adjusting pressure according to claim 1, wherein the connecting mechanism is a positioning pin and a positioning hole.

8. The utility model provides a sealed production technology of injecting glue based on move magnetism pressure regulating device injecting glue mould which characterized in that: the method comprises the following steps:

s6: the inner tube is placed in sequence by cleaning the upper plug and coating a layer of release agent, the first component, the second component and the silica gel component sequentially penetrate through the silica gel component and the first component in sequence, the nut is sleeved on the threaded screw rod and is slowly screwed, the silica gel component slowly deforms, the silica gel component is tightly attached to the upper inner wall of the inner tube, the coil is poured, and the pouring cavity is filled with resin.