CN207630436U - Mold 3D exhaust systems for forming thin-walled modeling product - Google Patents

Abstract

The utility model discloses a mold 3D exhaust system for forming thin-walled plastic products. There are a plurality of exhaust ports on the mold core, which are distributed in front and rear rows, and vertical exhaust is provided along each exhaust port. The horizontally arranged front longitudinal air passages connect the front vertical exhaust passages, and the rear longitudinal air passages connect the rear vertical exhaust passages. The front longitudinal air passages and the rear longitudinal air passages extend to the exhaust slope. The side of the gap part forms a longitudinal exhaust port, and a horizontal air channel is provided between the front longitudinal air channel and the rear longitudinal air channel to communicate with each other. The main exhaust air passage communicated by the transverse air passage communicates with the outside of the mould. When the mold is in injection molding, the gas in the cavity can be quickly and timely discharged out of the cavity, and the molding filling time and molding cycle are shortened by more than 35%; the problem of exhaust is completely solved, and the gas on the surface of the product is avoided due to trapped gas. Defects such as scratches and scorching.

Description

Mold 3D exhaust system for molding thin-walled plastic products

technical field

The utility model relates to a mold 3D exhaust system for forming thin-walled plastic products.

Background technique

At present, the production of thin-walled molding molds is characterized by fast injection speed, very thin products, and the cavity must be filled quickly in a short time, which puts forward higher requirements for rapid exhaust of the mold. Products <0.008mm will not have long flash. However, this depth cannot discharge all the gas out of the cavity in a short period of time during high-speed injection, resulting in product quality problems such as gas marks, burnt, etc., and the exhaust depth is slightly deeper. Flashing occurs.

The right amount of exhaust depth is very contradictory at present, resulting in the inability to take into account product quality, high incidence of defective products, affecting product delivery, and reducing technical competitiveness.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the prior art and provide a mold 3D exhaust system for forming thin-walled plastic products.

The purpose of this utility model is achieved through the following technical solutions:

The mold 3D exhaust system for forming thin-walled plastic products is characterized by: there are multiple exhaust ports on the mold core, which are distributed in front and rear rows, and vertical exhaust channels are provided along each exhaust port. The horizontally arranged front longitudinal air passages connect the front vertical exhaust passages, the rear longitudinal air passages connect the rear vertical exhaust passages, and the front longitudinal air passages and rear longitudinal air passages extend to the exhaust slope gap A longitudinal exhaust port is formed on the side of the front longitudinal air channel and a horizontal air channel is set between the rear longitudinal air channel to communicate with each other. The main exhaust air passage communicated with the passage communicates with the outside of the mould.

Furthermore, in the above mold 3D exhaust system for molding thin-walled plastic products, a side exhaust step is provided above the exhaust slope gap.

Further, the above-mentioned mold 3D exhaust system for molding thin-walled plastic products, wherein, there are six exhaust ports, three in each row at the front and rear.

Further, the above-mentioned 3D exhaust system for molding thin-walled plastic products, wherein the exhaust ports on the front and rear rows are symmetrically distributed.

Compared with the prior art, the utility model has significant advantages and beneficial effects, which are embodied in the following aspects:

The 3D three-dimensional exhaust structure is uniquely designed and novel in structure, so that the gas in the cavity can be quickly and timely discharged out of the cavity during injection molding; after using the three-dimensional exhaust system with the above-mentioned 3D structure, the molding filling time and molding cycle are shortened by 35% %above. Completely solve the problem of exhaust, avoid air marks, burnt and other defects on the surface of the product due to trapped air, the product will not appear flashing, and the exhaust is not restricted at the same time, ensuring that high-quality products that meet customer requirements can be produced product. It can prolong the service life of the mould, can be applied to the use of various moulds, and is widely used.

Description of drawings

Figure 1: a schematic diagram of the axonometric structure of the utility model;

Fig. 2: a top view schematic diagram of the utility model;

Fig. 3: F-F sectional schematic diagram of Fig. 2;

Figure 4: E-E sectional schematic diagram of Figure 2;

Figure 5: Schematic connection of the airway.

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, specific implementations are now described in detail.

As shown in Figures 1 to 5, the mold 3D exhaust system used to form thin-walled plastic products has six exhaust ports 2 on the mold core 1, three in each row at the front and rear, symmetrically distributed in two rows at the front and rear, The exhaust ports are located on the inside of the thimble holes 7. Vertical exhaust channels 8 are extended along each exhaust port. The front longitudinal air channels 9 arranged horizontally connect the front vertical exhaust channels 8. The rear longitudinal air channels The passage connects the rear vertical exhaust passage 8, and the front longitudinal air passage 9 and the rear longitudinal air passage extend to the side of the exhaust slope gap part 5 to form a longitudinal exhaust port 4, and the top of the exhaust slope gap part 5 There is a side exhaust step 6, and a horizontal air channel 11 is provided between the front longitudinal air channel 9 and the rear longitudinal air channel to communicate with each other, and the lateral air channel 11 extends to the side of the exhaust slope gap 5 to form a horizontal exhaust port 3. The confluence port 10 is formed at the intersection of the longitudinal air passage 9 and the transverse air passage 11, and the main exhaust air passage 12 connected with the transverse air passage 11 is connected with the outside of the mold to form a terminal exhaust outlet 13.

During injection molding, when the plastic resin is quickly filled into the mold cavity, the gas is squeezed by the resin and needs to be quickly discharged out of the cavity. At this time, the gas enters the vertical exhaust channel 8 through the exhaust port 2, and the gas in the six vertical exhaust channels 8 vertically enters the front longitudinal air channel 9 and the rear longitudinal air channel, and then converges in the horizontal air channel 11, Part of the gas is discharged out of the mold cavity from the horizontal exhaust port 3 and the longitudinal exhaust port 4, most of the gas will enter the main exhaust air channel 12 along the horizontal air channel 11, and finally, it will be discharged from the mold cavity through the terminal exhaust port 13 In addition, so as to ensure that the resin can fill the cavity smoothly and obtain high-quality appearance products. The gas is discharged from the cavity quickly and smoothly from the exhaust port along the exhaust channels at all levels.

After using the three-dimensional exhaust system with the above 3D structure, the molding filling time and molding cycle are shortened by more than 35%. Completely solve the problem of exhaust, avoid air marks, burnt and other defects on the surface of the product due to trapped air, the product will not appear flashing, and the exhaust is not restricted at the same time, ensuring that high-quality products that meet customer requirements can be produced product.

To sum up, the 3D three-dimensional exhaust structure of the utility model has a unique design and a novel structure, so that the gas in the cavity can be quickly and timely discharged out of the cavity during injection molding of the mold. It can prolong the service life of the mould, can be applied to the use of various moulds, and is widely used.

It should be noted that: the above description is only a preferred embodiment of the present utility model, and is not intended to limit the scope of rights of the present utility model; at the same time, the above description should be clear and implementable for professionals in the relevant technical field, so other unspecified Equivalent changes or modifications that deviate from the spirit disclosed in the utility model shall be included in the scope of the patent application.

Claims (4)

1. The mold 3D exhaust system for forming thin-walled plastic products is characterized in that: there are multiple exhaust ports on the mold core, which are distributed in two rows at the front and back, and a vertical row is arranged along each exhaust port. Air passage, the front longitudinal air passage arranged horizontally connects the front row vertical exhaust passages, the rear longitudinal air passage connects the rear row vertical exhaust passages, the front longitudinal air passage and the rear longitudinal air passage extend to the exhaust slope The side of the gap part forms a longitudinal exhaust port, a horizontal air channel is provided between the front longitudinal air channel and the rear longitudinal air channel to communicate with each other, and the horizontal air channel extends to the side of the exhaust slope gap part to form a horizontal exhaust port. The main exhaust air passage communicated with the transverse air passage communicates with the outside of the mould. 2. The mold 3D exhaust system for molding thin-walled plastic products according to claim 1, wherein a side exhaust step is provided above the exhaust slope gap. 3. The mold 3D exhaust system for molding thin-walled plastic products according to claim 1, characterized in that there are six exhaust ports, three in each row at the front and rear. 4. The mold 3D exhaust system for molding thin-walled plastic products according to claim 1, characterized in that: the exhaust ports on the front and rear rows are symmetrically distributed.