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Segmental mold with celectromagnetic vulcanization tread

A technology of vulcanized tread and flexible mold, applied in the field of molds for rubber production, can solve the problems of inconsistent actual measurement value and inconsistent measurement performance, and achieve the effect of convenient demoulding

Pending Publication Date: 2019-01-18
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then there is the temperature of the material. The molding of thermosetting elastomer materials must maintain the flow of cooling medium to the injection device and the machine head so that the cooling temperature is lower than the solidification temperature of the material. The increase in temperature can reduce the torque required during the plasticization process, and the temperature Fluctuations can also cause inconsistent metering performance, resulting in inconsistent actual metered values

Method used

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  • Segmental mold with celectromagnetic vulcanization tread
  • Segmental mold with celectromagnetic vulcanization tread
  • Segmental mold with celectromagnetic vulcanization tread

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The main structure of an electromagnetic vulcanized tread active mold mold involved in this embodiment includes an upper cover 1, a bow seat component 2, a pattern block component 3, an inner mold core 4, a runner component 5, a flange component 6 and a sealing ring 7 The inside of the upper cover 1 is nested with a bow-shaped seat composition 2, and the upper cover 1 and the bow-shaped seat composition 2 are snap-connected. connection, the inner mold core 4 and the upper cover 1 are set independently, and the bottom of the inner mold core 4 is evenly spaced with four sets of runners to form 5, the inner mold core 4 and the runners to form 5 are connected by flanges 6, and the inner mold core A sealing ring 7 is arranged between 4 and the flow channel composition 5 .

[0028] The main structure of the upper cover 1 involved in this embodiment includes a side ring 10, a T-shaped groove 11, a top plate 12 and a wedge block 13; The top of the top is provided with a top pl...

Embodiment 2

[0036] When the electromagnetic vulcanized tread active mold mold involved in this embodiment is used in conjunction with the gear pump injection machine, the gear pump injection machine selects a single screw with a diameter of 200mm, and the total volume of the tread is 19000cm 3 For example, 4 gear pump injection machines can complete the injection within 20 seconds, and the injection volume of each gear pump injection machine is 4750cm 3 , the injection speed is 1.4525t / h; there are two gate layout schemes, one is to use 8 pairs of point gates for inner wall injection, and the other is to use 4 line gates for side injection; the gear pump can not only increase the head pressure , and can reduce the extrusion temperature of the rubber compound: the operation of the gear pump reduces the screw pressure of the extruder, the heat generation of the rubber compound is reduced when the rubber is transported by the extruder, and the flow path of the rubber compound in the gear pump...

Embodiment 3

[0038] When the electromagnetic vulcanized tread movable mold mold involved in this embodiment cooperates with the gear pump to extrude the short fiber compound rubber, the transmission characteristics of the positive displacement transmission of the gear pump can greatly reduce the pressure fluctuation, ensure the stability of the head pressure, and improve the short-term The appearance quality of fiber compound rubber can improve the stability of rubber extrusion, facilitate the dispersion of short fibers and other fillers, reduce the Payne effect, and ensure that the compound rubber maintains good dispersion at high speeds; Internally pressurized, the pressure is higher when passing through the extruder head, and the degree of adhesion between the layers increases, which ensures the quality of the extruded product; with the increase of the single screw speed, the Mooney viscosity decreases, ensuring that the short fiber The dispersion in the rubber compound makes the quality...

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Abstract

The invention belongs to the technical field of molds for rubber production and relates to a segmental mold with an electromagnetic vulcanization tread. With respect to tThe main structure ,of the segmental mold comprises an upper cover, a bow-shaped seat assembly, a pattern block assembly, an inner mold core, a flow channel assembly, a flange part and a seal ring, and simultaneously cooperates with 4 gear pump rubber injection machines in use, a symmetric injection method is adopted to improve injection efficiency, the design process of a part is combined with a CAE finite element analysis, during use, the 4 gear pump injection machines are respectively connected with the flow channel assembly through the flange part, the upper cover is sleeves the d outside of the inner mold core to carry out mold closing, the gear pump injection machines are started, rubber passes through a through hole to enter between the pattern block assembly and the inner mold core to be vulcanized to form thetread, when the mold is opened, an external machine is used to vertically lift the upper cover, the bow-shaped seat assembly drives the pattern block assembly to move upwards, the pattern block assembly is separated from the tread, a wedge-shaped block is separated from a wedge-shaped groove, by demolding, the tread and the flow channel assembly are manually cut and separated, and by mold closing,production is performed for next time.

Description

Technical field: [0001] The invention belongs to the technical field of molds for rubber production, and relates to an electromagnetic vulcanized tread active mold mold, which is used in conjunction with four gear pump rubber injection machines, adopts a symmetrical injection method, and improves injection efficiency. Background technique: [0002] During the injection molding process of rubber products, when the rubber is extruded from the injection machine head, there will be severe friction with the inner wall of the gate, the inner wall of the runner, and the inner cavity of the mold. As the injection process proceeds, the front end reacts and solidifies due to the rising temperature and the obstruction of the complex flow channel cavity, resulting in blockage of the flow channel, uneven filling of the mold, weld lines or gaps in the product, and the quality of the material. Flow characteristics are affected by viscosity, shear and cure rate. Unlike thermoplastic resins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/26B29C45/27
CPCB29C45/2602B29C45/27
Inventor 汪传生王红边慧光郝国强辛朝旭
Owner QINGDAO UNIV OF SCI & TECH
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