CN102501345A

CN102501345A - Multifunctional pouring hopper

Info

Publication number: CN102501345A
Application number: CN2011103124657A
Authority: CN
Inventors: 高强
Original assignee: TIANJIN BAILI NTK ELECTRICAL TECHNOLOGY Co Ltd
Current assignee: TIANJIN BAILI NTK ELECTRICAL TECHNOLOGY Co Ltd
Priority date: 2011-10-14
Filing date: 2011-10-14
Publication date: 2012-06-20
Anticipated expiration: 2031-10-14
Also published as: CN102501345B

Abstract

The invention relates to a multifunctional pouring hopper, which is characterized by comprising a hopper cavity and a guide plate. The hopper cavity is formed by welding four side plates and the upper opening of the cavity is larger than the lower opening. The lower end of the hopper cavity is welded on the guide plate. The upper end of the guide plate is semi-circular. The hopper cavity is located at the upper part of the semicircle. Guide openings corresponding to a mould pouring opening are arranged at an intersection of both side surfaces of the hopper cavity and the guide plate. The lower end part of the guide plate enters the mould cavity from the pouring opening. With adoption of the invention, bubble in a mixture in a vacuum tank decreases automatically to reduce the possibility that the bubble flows into the pouring mould and relatively improve the degassing degree of the mixture, and meanwhile the multifunctional pouring hopper pours the mixture at a constant speed and with a constant amount to the benefit of returning bubble outside by the pouring mould so as to improve the quality of the electric performance of the product. In addition, the invention further has the advantages of a simple structure, reasonable design and is easy to manufacture.

Description

Multi-functional depositing funnel

Technical field

The invention belongs to transducer epoxy resin-cast technical field, particularly relate to a kind of multi-functional depositing funnel.

Background technology

Because the size of the resin pouring slot area of part transducer epoxy resin-cast mould receives the little restriction of small product size, causes casting mold pouring slot area less, the pouring slot of discharging opening aligning casting mold brings difficulty during to casting mixture in vacuum tank.Common solution is exactly on the pouring slot of casting mold, to place funnel, to enlarge the area of pouring slot, reduces the difficulty that the vacuum tank discharging opening is aimed at the casting mold pouring slot, lets the operating personnel of cast operation aim at pouring operation easily.There is the shortcoming of function singleness in traditional horn funnel; Only satisfy and collect resin mixture; Let resin mixture flow into the function in the casting mold die cavity again; Only play the effect of general funnel, do not have both other utility function, cast operation assurance product electric property is not brought into play any effect.

There is following problem in the existing casting process:

1, be difficult to reach the degree of regulation owing to pouring can vacuum, the compound degassing, cause carrying micro-bubble in the resin mixture secretly, manual work can't resolve at all.In in resin mixture flows into the casting mold die cavity, these micro-bubbles are rolled in and flow into casting mold die cavity the inside in the resin mixture in the lump, treat the resin mixture hot setting after, bubble has just been stayed in the pour mass.Bubble in the pour mass is very big to the harm of transformer electric property, causes puncture, office to amplify consequences such as product rejection easily.

2, because pouring can flows out compound unit interval flow, flow velocity disunity in several stages such as beginning, pilot process, end; That is to say; From first to last compound is not strictly at the uniform velocity, gets in the casting mold die cavity to even amount; So easy the bubble nest in the casting mold die cavity, bubble is difficult to return out, forms future trouble.

3, since compound fall from the discharging opening of the eminence pouring can that is higher than more than 400 millimeter of casting mold; Around the die casting mouth, produce splash phenomena; Cause the compound waste, spatter to such an extent that casting mold on every side falls to going up compound simultaneously, increased the amount of labour and the man-hour of cleaning mould.

Summary of the invention

The present invention provides a kind of and is letting the bubble in the compound reduce voluntarily in the vacuum tank for solving the technical problem that exists in the known technology; Reduce and flow to the probability in the casting mold; Improve the degassing degree of compound relatively; Realize at the uniform velocity simultaneously, weigh casting mixture, be beneficial to the multi-functional depositing funnel that casting mold returns bubble outward, improves the quality of products.

The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:

A kind of multi-functional depositing funnel is characterized in that: said depositing funnel comprises hopper housing and drainage plate, and said funnel chamber has four blocks of side plates to be welded, and the funnel chamber of four side plate welding is suitable for reading greater than end opening; The lower end of said funnel chamber is welded on the drainage plate; The upper end semicircular in shape of said drainage plate; Funnel chamber is positioned at the top of semicircle; And two sides and drainage plate intersection in funnel chamber are provided with and the corresponding draining hole of die casting mouth, and the bottom of said drainage plate is goed deep in the mold cavity from the sprue gate.

The present invention can also adopt following technical measures:

Said draining hole is 3 ~ 5mm with respect to the height of semicircle drainage plate outer surface, and 8 ~ 10mm support portion is left at the draining hole two ends.

Advantage and good effect that the present invention has are: because the novel employing technique scheme of this reality can solve the technical problem that traditional depositing funnel cannot solve, its advantage is following:

1, before resin mixture flows in the casting mold die cavity; Notes (about the about 20mm of diameter) compound that flows down the vacuum tank discharging opening has become film morphology; Bubble in the compound is dragged long pulling open; Promptly realized the function of the film degassing again in vacuum tank, reduced bubble and flowed into the quantity in the casting mold die cavity, reduced pour mass because the breakdown probability of scrapping of bubble.

2, compound is come out from the pouring can discharging opening after, be not directly to get in the casting mold die cavity, but accumulated earlier that the secondary discharging is poured into a mould then through this said structure.The constant area of draining hole of the present invention is constant; Guaranteed that compound comes out to get in the casting mold with a flow velocity, flow; Promptly realized the function that constant is at the uniform velocity poured into a mould, the bubble that is beneficial in the mould returns out, has reduced to pound bubble in, nest casting mold, to be difficult to the probability that returns out.

3, the present invention is when resin mixture falls into funnel chamber; Can collect the compound that splashes; Bring into play the function that prevents that compound from splashing, compound is flowed in the casting mold die cavity, avoided compound to waste and be splashed to other casting mold; Control the product material cost, avoided the unnecessary waste and the man-hour of cleaning casting mold.

In addition the present invention also have simple in structure, reasonable in design, be easy to advantages such as making.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is an A-A cutaway view among Fig. 1;

Fig. 3 is an I portion enlarged drawing among Fig. 2;

Fig. 4 is user mode figure of the present invention;

Fig. 5 is the mold cavity vertical view.

Among the figure: 1, hopper housing; 1-1, side plate; 2, drainage plate; 3, draining hole; 4, mold cavity; 4-1, sprue gate.

The specific embodiment

For further understanding summary of the invention of the present invention, characteristics and effect, the following examples of giving an example now, and conjunction with figs. specifies as follows:

See also Fig. 1 to Fig. 5, a kind of multi-functional depositing funnel, said depositing funnel comprise hopper housing 1 and drainage plate 2, and said funnel chamber 1 has four side plate 1-1 to be welded, and the funnel chamber of four side plate welding is suitable for reading greater than end opening; The lower end of said funnel chamber 1 is welded on the drainage plate 2; The upper end semicircular in shape of said drainage plate 2; Funnel chamber 1 is positioned at the top of semicircle, and is provided with and the corresponding draining hole 3 of die casting mouth in the two sides and drainage plate 2 intersections of funnel chamber 1, and said draining hole is 3 ~ 5mm with respect to the height of semicircle drainage plate outer surface; 8 ~ 10mm support portion is left at the draining hole two ends, so the 16mm ~ 20mm that is shorter in length than drainage plate length of draining hole.In the present embodiment, the length of drainage plate is 120mm, and the height of draining hole is that the length of 5mm, draining hole is 100mm, and the bottom of said drainage plate 2 is goed deep in the mold cavity 4 from sprue gate 4-1.

The effect at method for using of the present invention and each position is following: resin mixture is a cylindrical shape when flowing out aloft; Fall in the funnel chamber; Resin mixture will slowly flow in the mold cavity from draining hole along the outer surface of drainage plate; Resin mixture will form a thin slice, through the shunting of drainage plate top cambered surface, make resin mixture flow into mold cavity from bilateral symmetry.Resin mixture is paved into sheet or film; Micro-bubble in the resin mixture is elongated, and until pulling open, and then has reduced the resin material the inside bubble quantity and bubble that flows into the casting mold die cavity; Reached the purpose of compound secondary film degassing in vacuum tank; Increased the purity of the compound film degassing, compound degassing degree is high more, and the probability that product is breakdown, office amplifies, scrapped is just more little.

Since the length of draining hole with highly all immobilize, promptly constant area is constant, and then can realize speed limit and limit the quantity of, and waters the controlled purpose of beam material thereby reach.It is the constant area of oblong aperture; The resin material all is constant through speed and the flux unit time that oblong aperture flows out, and the equal all the time speed of resin material is all flowed in the mold cavity with measuring, has overcome vacuum tank discharging several stages flow velocity, the skimble-scamble difficulty of flow; Compound is got in the casting mold die cavity equably; The bubble of being convenient to casting mold die cavity resin material the inside returns out, does not choke with resentment in the casting mold, does not pound bubble.

In addition; When the resin material gets off to fall the tilting funnel chamber that four blocks of side plates surround from above in, produce when splashing; Side plate has blocked the resin material that splashes all around, collects simultaneously, makes it down to flow to draining hole along inwall; Avoid compound to splash away and caused waste, and other the casting mold on every side of making dirty.

The above only is to preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction; Every foundation technical spirit of the present invention is to any simple modification that above embodiment did, and equivalent variations and modification all belong in the scope of technical scheme of the present invention.

Claims

1. multi-functional depositing funnel, it is characterized in that: said depositing funnel comprises hopper housing and drainage plate, said funnel chamber has four blocks of side plates to be welded, and the funnel chamber of four side plate welding is suitable for reading greater than end opening; The lower end of said funnel chamber is welded on the drainage plate; The upper end semicircular in shape of said drainage plate; Funnel chamber is positioned at the top of semicircle; And two sides and drainage plate intersection in funnel chamber are provided with and the corresponding draining hole of die casting mouth, and the bottom of said drainage plate is goed deep in the mold cavity from the sprue gate.

2. multi-functional depositing funnel according to claim 1 is characterized in that: said draining hole is 3 ~ 5mm with respect to the height of semicircle drainage plate outer surface, and 8 ~ 10mm support portion is left at the draining hole two ends.