CN205167359U - A movable mold core for hydraulic molding of silicone-coated plastic parts - Google Patents

Abstract

The utility model discloses a movable mold core for oil pressure forming of silica gel coated plastic parts, wherein the movable mold core base comprises a plastic part bearing seat protruding forwards and a mold core connecting seat connected with a mold core upper cover; the side wall of the upper part of the plastic part bearing seat is a vertical surface, the upper surface of the plastic part bearing seat is provided with a curved surface matched with a PC window plastic part, the side wall of the lower part of the plastic part bearing seat is provided with an inclination, the lower part of the plastic part bearing seat is of a tapered structure which narrows downwards, and the tapered structure is embedded into a mold cavity; the die core connecting seat is characterized in that a left clamping structure and a right clamping structure are respectively arranged at two corners of the upper end of the die core connecting seat, each clamping structure comprises a tensioning pull rod and a clamping strip, the tensioning pull rods are movably connected with the die core connecting seat through a rotating shaft, and the tensioning pull rods rotate by taking the rotating shafts as centers. The utility model discloses a mould steel cladding high heat conduction system copper core has both guaranteed the rigidity of mold core, has improved heat transfer efficiency again.

Description

A movable mold core for hydraulic molding of silicone-coated plastic parts

technical field

The utility model relates to the technical field of mold thermoforming, in particular to a movable mold core for hydraulic molding of silica gel-coated plastic parts.

Background technique

The traditional hydraulic mold design is only for silicone products. The hydraulic mold can withstand high temperature of 200 degrees, and the silicone mold is molded; if the silicone is covered with plastic products, the plastic products will be deformed or crushed at a high temperature of 200 degrees, which will cause the appearance of the product to be defective. raised.

At present, there is no mold structure that can be coated with silica gel on plastic products, and can allow the mold core to be cooled separately to speed up the molding efficiency.

Utility model content

This utility model is aimed at the deficiencies of the current technology, and provides a movable mold core for hydraulic molding of silicone-coated plastic parts. Through the independent and detachable movable mold core, the movable mold core can be quickly installed to the mold cavity or Disassemble the movable mold core and replace it to shorten the production cycle of compression molding and improve production efficiency.

The technical scheme that the utility model adopts for realizing the above object is:

A movable mold core formed by hydraulic molding of silica gel-coated plastic parts, the base of the movable mold core includes a plastic part bearing seat protruding forward, and a mold core connecting seat connected to the upper cover of the mold core;

The upper side wall of the plastic parts bearing seat is a vertical surface, the upper surface of the plastic parts bearing seat is provided with a curved surface matching the PC window plastic parts, the lower side wall is provided with a slope, and the lower part of the plastic parts bearing seat is in the direction of a lower tapered structure, which is embedded in the mold cavity;

The two corners of the upper end of the core connecting seat are respectively provided with two clamping structures on the left and right. The clamping structure includes a tension rod and a clamping bar. The tension rod rotates around the axis of rotation.

The plastic part bearing seat of the mold core base is provided with a high thermal conductivity copper core member, and the copper core member is provided with a plurality of horizontal heat transfer plates in parallel, and is also provided with a longitudinal heat transfer column. The horizontal heat transfer plates communicate with each other, and one of the transverse heat transfer plates extends to the side wall of the plastic part bearing seat and is flush with the side wall.

The plastic part bearing seat of the mold core base is provided with a high thermal conductivity copper core member, and the copper core member is provided with a plurality of horizontal heat transfer plates in parallel, and is also provided with a longitudinal heat transfer column. The transverse heat transfer plates are connected, and each transverse heat transfer plate extends to the side wall of the plastic part bearing seat and is flush with the side wall.

The surface of the transverse heat transfer plate is provided with a plurality of heat transfer protrusions.

Beneficial effects of the utility model: Since it takes a while to heat the mold during the compression molding process, in the utility model, the mold core and the mold are in a separate structure, and there is a certain delay in the temperature of the mold being transferred to the mold core during the mold heating process. Therefore, in order to quickly transfer the mold temperature to the movable mold core, and precisely control the temperature of the upper surface of the mold core and the contact between the mold core and the PC window plastic part, the temperature of the mold core will not be too high to make the PC window plastic part Deformation or crushing will lead to a high rate of defective product appearance. A copper core component with high thermal conductivity is added to the movable core, and the mold temperature is quickly transmitted to the entire core through the copper core component, and the temperature of the entire core is basically the same. , to ensure that the temperature of the upper surface of the mold core in contact with the PC window plastic parts will not be too high or too low, to avoid damage to the PC window plastic parts due to excessive temperature, or to prevent the silica gel from being completely connected to the PC window plastic parts due to too low temperature.

The cycle of hydraulic molding mainly depends on the cooling and setting time. Through the movable mold core with high heat transfer efficiency, and quickly replace the formed mold core with the unformed mold core, after molding, there is no need to wait for the mold core to cool down. Take out the formed movable mold core as a whole, put the movable mold core that has been cooled and reposition the PC window plastic parts into the mold cavity for the next molding, and at the same time, put the movable mold core that has just been taken out The core is separated from the product to improve production efficiency.

The movable mold core and the mold have a separate structure, and the movable mold core cannot be heated or cooled by the heating and cooling channels in the mold. The utility model covers the high thermal conductivity system copper core with mold steel, which not only ensures the rigidity of the mold core , and improved heat transfer efficiency.

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Description of drawings

Fig. 1 is the overall structural representation of the movable mold core of embodiment 1;

Fig. 2 is a schematic cross-sectional structure diagram of the plastic part bearing seat of Fig. 1;

FIG. 3 is a schematic structural view of the copper core component in Embodiment 1. FIG.

In the figure: 1. movable mold core, 2. mold core base, 21. clamping structure, 211. tension rod, 212. clamping bar, 213. rotating shaft, 22. plastic parts bearing seat, 221. upper side Wall, 222. lower side wall, 23. copper core member, 231. horizontal heat transfer plate, 232. longitudinal heat transfer column, 24. mold core connecting seat, 3. mold core upper cover, 4. PC window plastic parts.

detailed description

Embodiment 1, referring to Fig. 1 to Fig. 3, the hydraulic molding method of silica gel-coated plastic parts provided in this embodiment comprises the following steps:

(1) Prepare a plurality of independent detachable movable mold cores 1, the movable mold core 1 includes a mold core base 2, a mold core upper cover 3, and the mold core base 2 is provided with a clamping structure 21;

The movable mold core base 2 includes a plastic part bearing seat 22 protruding forward, and a mold core connecting seat 24 connected with the mold core upper cover 3;

The upper side wall 221 of the plastic part bearing seat 22 is a vertical surface, the upper surface of the plastic part bearing seat 22 is provided with a curved surface matching the PC window plastic part 4, and the lower side wall 222 is provided with a slope. The lower part of the bearing seat 22 is a tapered structure that narrows downward, and the tapered structure is embedded in the mold cavity;

Two corners of the upper end of the mold core connecting seat 24 are respectively provided with two clamping structures 21 on the left and right. The clamping structure 21 includes a tension rod 211 and a clamp strip 212. The tension rod 211 is connected to the mold through a rotating shaft 213. The core connecting seat 24 is flexibly connected, and the tension rod 211 rotates around the rotating shaft 213;

The plastic part bearing seat 22 of the mold core base 2 is provided with a high thermal conductivity copper core member 223, and the copper core member 223 is provided with a plurality of horizontal heat transfer plates 231 in parallel, and is also provided with a longitudinal heat transfer column 232. The longitudinal heat transfer column 232 communicates with a plurality of transverse heat transfer plates 231, one of the transverse heat transfer plates 231 extends to the side wall of the plastic part bearing seat 22, and is flush with the side wall;

(2) Place the prepared PC window plastic part 4 on the mold core base 2, and fasten the mold core upper cover 3 and the mold core base 2 through the clamping structure 21, and the PC window plastic part 4 is tightened. It is fixed between the mold core upper cover 3 and the mold core base 2;

Set the mold core jig, put a plurality of movable mold cores 1 on which the PC window plastic parts 4 are placed on the mold core jig, and put the mold core jig into the mold cavity;

(3) Place the cut silica gel on the product position on the movable mold core 1, close the mold, and carry out hydraulic molding. The mold temperature is 95±5°C, the vulcanization time is 200 seconds, and the pressure is 160KG/square centimeter;

(4) Open the mold, eject the movable mold core 1, take out the product and the movable mold core 1 together, disassemble the product, and put the movable mold core 1 into the cooling fixture to cool;

Place another batch of movable mold cores 1 that have been cooled and placed PC window plastic parts 4 on the mold cavity, and repeat step (3) to carry out hydraulic molding;

By continuously replacing the movable mold core 1, the rapid hydraulic molding process of the silicone-coated PC window plastic part 4 is realized.

Since the mold heating needs a period of time during the compression molding process, in the utility model, the mold core and the mold are separated structures. During the mold heating process, the temperature of the mold is transmitted to the mold core with a certain delay. The temperature is transmitted to the movable mold core 1, and the temperature of the upper surface of the mold core and the contact between the mold core and the PC window plastic part 4 is precisely controlled, so that the temperature of the mold core will not be too high to deform or crush the PC window plastic part 4 , leading to a high rate of defective product appearance, adding a copper core member 223 with high thermal conductivity to the movable mold core 1, the mold temperature is quickly transmitted to the entire mold core through the copper core member 223, and the temperature of the entire mold core is basically the same, It ensures that the temperature of the upper surface of the mold core in contact with the PC window plastic part 4 will not be too high or too low, avoiding damage to the PC window plastic part 4 due to excessive temperature, or the silica gel cannot be completely connected with the PC window plastic part 4 due to too low temperature .

The cycle of hydraulic molding mainly depends on the cooling and setting time. Through the movable mold core 1 with high heat transfer efficiency, and quickly replace the formed mold core with the unformed mold core, after molding, there is no need to wait for the mold core to cool down. Take out the molded movable mold core 1 as a whole directly, then put the movable mold core 1 that has been cooled and reset the PC window plastic part 4 into the mold cavity for the next compression molding, and at the same time, take out the The active mold core 1 is separated from the product to improve production efficiency.

This embodiment also provides the movable mold core 1, the movable mold core base 2 includes a plastic part bearing seat 22 protruding forward, and a mold core connecting seat 24 connected with the mold core upper cover 3;

The upper side wall 221 of the plastic part bearing seat 22 is a vertical surface, the upper surface of the plastic part bearing seat 22 is provided with a curved surface matching the PC window plastic part 4, and the lower side wall 222 is provided with a slope. The lower part of the bearing seat 22 has a tapered structure that narrows downward;

Two corners of the upper end of the mold core connecting seat 24 are respectively provided with two clamping structures 21 on the left and right. The clamping structure 21 includes a tension rod 211 and a clamp strip 212. The tension rod 211 is connected to the mold through a rotating shaft 213. The core connecting seat 24 is flexibly connected, and the tension rod 211 rotates around the rotating shaft 213 .

The plastic part bearing seat 22 of the mold core base 2 is provided with a high thermal conductivity copper core member 223, and the copper core member 223 is provided with a plurality of horizontal heat transfer plates 231 in parallel, and is also provided with a longitudinal heat transfer column 232. The vertical heat transfer column 232 communicates with a plurality of transverse heat transfer plates 231 , one of the transverse heat transfer plates 231 extends to the side wall of the plastic part bearing seat 22 and is flush with the side wall. The movable mold core 1 is separated from the mold, and the movable mold core 1 cannot be heated or cooled by the heating and cooling channels in the mold. The utility model covers the high thermal conductivity copper core with mold steel, which not only ensures the Rigidity, and improved heat transfer efficiency.

Embodiment 2, the hydraulic molding method of silica gel-coated plastic parts provided by this implementation is basically the same as that of Embodiment 1, the difference is that the plastic part bearing seat 22 of the mold core base 2 is provided with a high thermal conductivity Copper core member 223, the copper core member 223 is provided with a plurality of transverse heat transfer plates 231 in parallel, and is also provided with a longitudinal heat transfer column 232, the longitudinal heat transfer column 232 connects a plurality of transverse heat transfer plates 231, each transverse heat transfer plate 231 The heat plate 231 extends to the sidewall of the plastic component holder 22 and is flush with the sidewall.

The surface of the transverse heat transfer plate 231 is provided with a plurality of heat transfer protrusions.

The utility model is not limited to the above-mentioned embodiment, and the hydraulic molding method and the movable mold core of other silica gel-coated plastic parts obtained by adopting the same or similar method or device as the above-mentioned embodiment of the utility model are all included in the utility model. within the scope of protection.

Claims (4)

1. A movable mold core for hydraulic molding of silica gel-coated plastic parts, characterized in that: the base of the movable mold core includes a plastic part bearing seat protruding forward, and a mold core connected with the mold core upper cover Connecting seat; The upper side wall of the plastic parts bearing seat is a vertical surface, the upper surface of the plastic parts bearing seat is provided with a curved surface matching the PC window plastic parts, the lower side wall is provided with a slope, and the lower part of the plastic parts bearing seat is in the direction of a lower tapered structure, which is embedded in the mold cavity; The two corners of the upper end of the core connecting seat are respectively provided with two clamping structures on the left and right. The clamping structure includes a tension rod and a clamping bar. The tension rod rotates around the axis of rotation. 2. The movable mold core according to claim 1, characterized in that: a copper core member with high thermal conductivity is arranged in the plastic part bearing seat of the mold core base, and a plurality of transverse transmission lines are arranged in parallel on the copper core member. The heat plate is also provided with a longitudinal heat transfer column, which communicates with a plurality of transverse heat transfer plates, one of which extends to the side wall of the plastic part bearing seat, and is flush with the side wall. 3. The movable mold core according to claim 1, characterized in that: a high thermal conductivity copper core member is provided in the plastic part bearing seat of the mold core base, and a plurality of transverse transmission lines are arranged in parallel on the copper core member. The heat plate is also provided with a longitudinal heat transfer column, which connects multiple transverse heat transfer plates, and each transverse heat transfer plate extends to the side wall of the plastic part bearing seat and is flush with the side wall. 4. The movable mold core according to claim 2 or 3, characterized in that: the surface of the transverse heat transfer plate is provided with a plurality of heat transfer protrusions.