CN212860139U

CN212860139U - Centrifugal casting nylon slider's mould

Info

Publication number: CN212860139U
Application number: CN202021553024.7U
Authority: CN
Inventors: 潘跃; 朱亚飞; 陈红
Original assignee: Huai'an Jiangong Nylon Machinery Co ltd
Current assignee: Huai'an Jiangong Nylon Machinery Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-04-02
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses a centrifugal casting nylon sliding block's mould, including discoid last mould and the same discoid lower mould of just connecting on centrifuge through the ring flange, wherein have the sprue gate of a perpendicular to quotation in going up the mould top, four or four above die cavities are circular array evenly distributed and in last mould, have the disc groove to communicate mutually between sprue gate and each die cavity. The outer ring of the lower die is provided with a guide block which is convenient to install, and the die surface is a disc-shaped groove. During casting, the lower die is connected to the centrifuge, and the upper die is installed on the lower die. And (4) starting the centrifugal machine, pouring the liquid nylon into the casting gate, enabling the liquid nylon to uniformly flow into each cavity through the disc-shaped groove under the action of centrifugal force, filling the cavities, and simultaneously forming. After curing, the upper die and the lower die are separated, and the molded nylon slide block is taken out. With this mould, a few times can be cast into the nylon slider in quantity in the past to once casting, and work efficiency promotes greatly, still reduces product defect, improves the effect of yields.

Description

Centrifugal casting nylon slider's mould

Technical Field

The utility model relates to a casting die utensil field, concretely relates to mould of casting nylon sliding block.

Background

The nylon is used as a vibration-damping wear-resistant material to replace nonferrous metals and alloy steels in the mechanical aspect, and has irreplaceable value in the fields of transmission wear (such as medical treatment, sanitation, food industry and the like) which are not suitable for adding lubricating oil. The nylon sliding block is used as a common high-bearing and high-wear-resistance mechanical part in nylon products, and the market demand is large.

Traditionally, when a nylon slider is cast, a static casting method is often adopted, liquid nylon is slowly poured into a prepared mold cavity by self-mass, and the nylon is taken out after solidification. Although the casting method is simple, turbulence is easy to occur, and local polymerization is too fast; meanwhile, each cavity in one mold needs to be cast in sequence, so that a certain temperature difference exists between the cavities. These conditions can lead to the formation of blisters, depressions, wrinkles, residual stresses, and the like.

In addition, for temperature control and heat dissipation considerations, the number of cavities in a mold is often no more than four. Therefore, the number of products formed by single casting is small, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a centrifugal casting nylon sliding block's mould can improve the fashioned nylon sliding block quantity of one shot casting, can reduce defects such as bubble, sunken, wrinkle, residual stress in the nylon sliding block goods again.

The utility model discloses a following technical scheme realizes:

the utility model provides a centrifugal casting nylon slider's mould, includes discoid last mould and same discoid and connects the lower mould on centrifuge through the ring flange, goes up the mould and is equipped with four at least die cavities, locates the mould top with the sprue gate of die cavity intercommunication.

The utility model discloses the further improvement scheme is, communicate through the disc groove between sprue gate and each type chamber.

The utility model discloses the further improvement scheme is, the sprue gate is located last mould top central point and puts.

The utility model discloses the further improvement scheme is, the die cavity is circular array evenly distributed in last mould.

The utility model discloses the further improvement scheme is, go up the mould upper surface, the recess of laminating die cavity shape has been dug to clearance department between each die cavity.

The utility model discloses the further improvement scheme is, the lower mould die face is the disc recess, recess outer lane size and last mould shoulder shaft adaptation, the grooved underside is the plane, and the periphery of recess is equipped with the sealing rubber ring.

The utility model discloses the further improvement scheme is, the lower mould is fixed with evenly distributed's at least three installation guide block with the place that the last mould ladder face agrees with.

Compared with the prior art, the utility model, have following advantage:

one, the utility model discloses go up four at least die cavities of circular array in the mould, but the fashioned nylon sliding block quantity of one-time casting is greater than current scheme, has improved production efficiency.

Two, the utility model discloses replace watering with disc type groove, make liquid nylon flow into the die cavity from the sprue gate, when guaranteeing evenly to flow in each die cavity, make the mould structure simpler reliable, make easily.

Three, the utility model discloses the sprue gate is located mould top center, and the die cavity is circular array evenly distributed in the mould for liquid nylon flows in each die cavity when even under the effect of centrifugal force after pouring into the sprue gate, when guaranteeing that each die cavity liquid temperature is the same, and liquid flow in does not have turbulent phenomenon behind the die cavity. The product in each cavity is molded simultaneously, local polymerization can be prevented from being too fast, the defects of bubbles, depressions, wrinkles, residual stress and the like in the nylon slider product are effectively reduced, and the yield is improved.

Fourthly, the utility model discloses go up the mould upper surface, the recess of laminating die cavity shape has been dug to clearance department between each die cavity. The heat dissipation of the cavity is facilitated, the mass of the upper die is reduced, and the rotational inertia is reduced.

Fifthly, the periphery of the lower die disc groove die surface is provided with a sealing rubber ring, which plays the role of sealing the die cavity and prevents material leakage.

Sixthly, the utility model discloses three piece at least installation guide blocks that evenly distributed have been welded in the place that lower mould and last mould ladder face agree with. As more cavities require dies with larger volume and mass, the guide block can assist the upper die and the lower die with large volume and mass to be installed and matched, and the working efficiency is improved.

Drawings

Fig. 1 is an isometric exploded view of the present invention;

FIG. 2 is a schematic half-sectional view of the present invention;

fig. 3 is a schematic view of the upper mold of the present invention from the bottom.

Detailed Description

As shown in figure 1, the utility model comprises a disc-shaped upper die 4 and a lower die 1 which is also disc-shaped and is connected on a centrifuge through a flange plate, wherein the center of the top of the upper die 4 is provided with a casting opening 6. As shown in fig. 3, twelve cavities 7 are uniformly distributed in the upper mold 4 in a circular array, and the casting opening 6 is communicated with each cavity 7 through a disc-shaped groove 8. And a groove 5 which is matched with the shape of the cavity is dug in the gap between the cavities on the upper surface of the upper die 4.

As shown in fig. 1, the die surface of the lower die 1 is a disc groove without a cavity, the size of the outer ring of the groove is matched with that of the stepped shaft of the upper die, and the circumferential surface of the groove is provided with a sealing rubber ring; six installation guide blocks 3 are welded on the lower die 1 at the position matched with the step surface of the upper die 4.

When casting operation is carried out, the upper die 4 is hoisted on the lower die 1 through the auxiliary positioning of the mounting positioning block 3, and is fixedly mounted through the bolt 2 fixed on the lower die 1, and then the lower die 1 is connected on a centrifugal machine through a flange plate. And (3) starting the centrifugal machine, pouring liquid nylon from the casting port 6, enabling the liquid nylon to uniformly flow into each cavity 7 through the disc-shaped groove 8 under the action of centrifugal force, and filling the cavities 7. After curing, the upper die and the lower die are separated, and the molded nylon slide block is taken out. From this, the nylon slider of quantity in the past can be cast several times to one-time casting, and work efficiency promotes greatly, still reduces the product defect, improves the effect of yields.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a centrifugal casting nylon sliding block's mould, includes discoid last mould (4) and discoid and through lower mould (1) that the ring flange connects on centrifuge, its characterized in that: the upper die (4) is provided with at least four cavities (7), and the casting opening (6) communicated with the cavities (7) is arranged at the top of the upper die.

2. The centrifugal casting mould for nylon sliders as claimed in claim 1, wherein the casting opening (6) is communicated with each cavity (7) through a disc-shaped groove (8).

3. The centrifugal casting mould for nylon sliders as claimed in claim 1 or 2, wherein the casting opening (6) is located at the center of the top of the upper mould (4).

4. A centrifugal casting nylon slipper mold as recited in claim 1, wherein: the cavities (7) are uniformly distributed in the upper die (4) in a circular array.

5. A centrifugal casting nylon slipper mold as recited in claim 1, wherein: and grooves (5) which are matched with the shapes of the cavities are dug in the gaps among the cavities (7) on the upper surface of the upper die (4).

6. A centrifugal casting nylon slipper mold as recited in claim 1, wherein: the die surface of the lower die (1) is a disc groove, the size of the outer ring of the groove is matched with that of the stepped shaft of the upper die, the bottom surface of the groove is a plane, and a sealing rubber ring is arranged on the circumferential surface of the groove.

7. A centrifugal casting nylon slipper mold as recited in claim 1, wherein: lower mould (1) fixedly connected with evenly distributed three at least installation guide block (3), the installation guide block agrees with last mould (4) ladder face.