Blowing structure for demolding of highlight surface product

Abstract

The utility model discloses a blowing structure for demoulding a highlight surface product, which comprises a plate A, a front mould and a rear mould, a plurality of U-shaped mounting notches are formed in the contact surface of the front mould and the rear mould, and a first front insert is mounted in each mounting notch; a first airflow channel penetrating to the bottom is formed in the top of the first front insert, and a first flow guide groove communicating with the first airflow channel is further formed in the middle of the bottom of the first front insert in the length direction of the first front insert. According to the utility model, the blowing joint is arranged on the plate A, the corresponding gas path is designed on the side of the front mold, the blowing port is arranged at the edge close to the highlight surface of the product, and the blowing joint is blown five seconds before the plate A / B is opened by utilizing a signal of an injection molding machine, so that the gas is blown to the highlight surface of the product through the gas path and the blowing port; therefore, the phenomenon that the highlight surface of the product is vacuumized is effectively eliminated, product deformation or surface stripping damage is avoided, and the qualified rate of the product is increased.

Description

Technical Field

[0001] This utility model relates to the field of plastic product demolding technology, and in particular to an air blowing structure for demolding high-gloss products. Background Technology

[0002] In the field of plastic injection molding, especially for products requiring a high-gloss finish, difficulties in demolding are frequently encountered. Take, for example, a coffee machine casing made of PP material. Figure 6 As shown, three sides of the product's outer perimeter are textured, while the other side is glossy. Due to the product's structural limitations, the glossy surface needs to be formed on the front mold side. However, during injection molding, the glossy surface is prone to sticking to the front mold due to vacuum suction, leading to product deformation or surface damage, or even preventing normal demolding. This severely affects product quality and production efficiency, failing to meet normal injection molding production and delivery requirements. Utility Model Content

[0003] The purpose of this invention is to provide an air-blowing structure for demolding high-gloss products. By installing an air-blowing connector on the A-plate, designing corresponding air paths on the front mold side, and setting air-blowing ports near the edge of the high-gloss surface of the product, air is blown onto the air-blowing connector 5 seconds before the A / B plates are opened using the injection molding machine signal. The gas is then blown through the air paths and air-blowing ports onto the high-gloss surface of the product, effectively eliminating the phenomenon of vacuum suction on the high-gloss surface of the product. This avoids product deformation or surface damage and improves the product qualification rate.

[0004] To achieve the above objectives, the following technical solution is adopted:

[0005] An air-blowing structure for demolding high-gloss products includes an A-plate, a front mold, and a rear mold. The contact surfaces of the front and rear molds have several U-shaped mounting slots, each containing a first front insert. The top of the first front insert has a first airflow channel extending to its bottom, and the bottom of the first front insert has a first guide groove along its length that communicates with the first airflow channel. On the bottom of the first front insert, near the rear mold, several first air-blowing ports communicating with the first guide grooves are spaced apart along its length. An air inlet is located on one side of the A-plate, and an air-blowing connector is installed inside the air inlet. A main airflow channel communicating with the air inlet is located inside the A-plate. Several first branch channels communicating with the main airflow channel are also located inside the A-plate, each branch channel corresponding to a first airflow channel.

[0006] Furthermore, a first mounting groove is provided on the top of the front mold near the rear mold, and a first through hole is provided in the first mounting groove near the rear mold; a second front insert is also installed in the first mounting groove, and a second airflow channel extending to the bottom is provided on the top of the second front insert; a second guide groove communicating with the second airflow channel is also provided in the middle of the bottom of the second front insert along its length direction, and a plurality of second air blowing ports communicating with the second guide groove are also provided at intervals along the length direction of the bottom of the second front insert near the first through hole; a second diversion channel communicating with the main airflow channel is also provided inside the A plate, and the second diversion channel is communicating with the second airflow channel.

[0007] Furthermore, sealing rings are installed at the top openings of both the first and second airflow channels.

[0008] Furthermore, the depth of the first and second air inlets is 0.02 mm.

[0009] By adopting the above solution, the beneficial effects of this utility model are:

[0010] This invention involves installing an air blowing connector on the A-plate, designing a corresponding air path on the front mold side, and setting an air blowing port near the edge of the product's glossy surface. By using the injection molding machine's signal to blow air onto the air blowing connector 5 seconds before the A / B plates open, the gas is directed through the air path and air blowing port towards the product's glossy surface. This effectively eliminates the phenomenon of vacuum suction on the product's glossy surface, thereby preventing product deformation or surface damage and improving the product's pass rate. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a structural diagram of the present invention omitting the A-plate and other components;

[0013] Figure 3 for Figure 2 A structural diagram omitting the front mold;

[0014] Figure 4 This is a schematic diagram of the structure of the front mold of this utility model;

[0015] Figure 5 This is a schematic diagram of the structure of the first front insert of this utility model;

[0016] Figure 6 This is a structural diagram of a product with a high-gloss finish;

[0017] The following are explanations of the labels in the attached diagram:

[0018] 1. Plate A; 2. Front mold; 3. Rear mold; 4. Air blowing connector; 11. Main airflow channel; 12. First diversion channel; 13. Second diversion channel; 21. Mounting slot; 22. First front insert; 23. First mounting groove; 24. First through hole; 25. Second front insert; 221. First airflow channel; 222. First guide groove; 223. First air blowing port. Detailed Implementation

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Reference Figures 1 to 6 As shown, this utility model provides an air-blowing structure for demolding high-gloss products, including an A plate 1, a front mold 2, and a rear mold 3. In one embodiment, a plurality of U-shaped mounting slots 21 are provided on the contact surface between the front mold 2 and the rear mold 3, and a first front insert 22 is installed in each mounting slot 21; a first airflow channel 221 extending from the top to the bottom of the first front insert 22 is provided, and a first guide groove communicating with the first airflow channel 221 is also provided along the length direction of the bottom of the first front insert 22. 222; The bottom of the first front insert 22 is provided with a plurality of first air inlets 223 that communicate with the first guide groove 222 along the length direction of the side near the rear mold 3; An air inlet is provided on one side of the A plate 1, and an air inlet connector 4 is installed in the air inlet; A main airflow channel 11 communicating with the air inlet is provided inside the A plate 1; A plurality of first diversion channels 12 communicating with the main airflow channel 11 are also provided inside the A plate 1, and each first diversion channel 12 is connected to a first airflow channel 221.

[0021] Continue to refer to Figures 1 to 6 As shown, a first mounting groove 23 is provided on the top of the front mold 2 near the rear mold 3, and a first through hole 24 is provided in the first mounting groove 23 near the rear mold 3; a second front insert 25 is also installed in the first mounting groove 23, and a second airflow channel extending to the bottom is provided on the top of the second front insert 25; a second guide groove communicating with the second airflow channel is also provided in the middle of the bottom of the second front insert 25 along its length direction, and a plurality of second air blowing ports communicating with the second guide groove are also provided at intervals along the length direction of the bottom of the second front insert 25 near the first through hole 24; a second diversion channel 13 communicating with the main airflow channel 11 is also provided inside the A plate 1, and the second diversion channel 13 is communicating with the second airflow channel.

[0022] In this embodiment, there are two first front inserts 22 and one second front insert 25. Their numbers can be adaptively adjusted according to actual usage requirements, such as... Figure 6As shown, in this embodiment, the product is a coffee machine housing made of PP material, which is an appearance part. Three sides of the outer periphery of the product are textured, while the other side is glossy. The three sides of the product with textured requirements are formed by the rear mold 3-slide molding, while the side of the product with glossy requirements cannot be made by slide molding due to the product structure. The glossy surface is formed on the front mold 2-side.

[0023] In this embodiment, an air blowing connector 4 is installed on plate A 1. This connector connects to compressed air and the injection molding machine's signal. Three front mold inserts (two first front inserts 22 and one second front insert 25) are made on the front mold 2, and corresponding air paths are designed. An air blowing port is located near the edge of the glossy surface of the product. During production, after the A / B molds are closed, injection, pressure holding, and cooling begin. Five seconds before the A / B plates open, air is blown onto the air blowing connector 4 using the injection molding machine's signal. The gas passes through the air paths and air blowing ports (taking the airflow direction of the first front insert 22 as an example). To explain further, the airflow direction of the second front insert 25 is similar, specifically: air blowing connector 4 → main airflow channel 11 → first branch channel 12 → first airflow channel 221 → first guide groove 222 → first air blowing port 223), which is blown into the high-gloss surface of the product, thereby preventing the high-gloss surface of the product from being vacuumed and thus allowing for smooth demolding. Then, the A / B plate is opened. After the A / B plate is fully opened, the air blowing is turned off, and then the rear mold 3 slides the core, and then the product is ejected and enters the next working cycle, thereby meeting the normal demolding and production requirements of this type of product.

[0024] Meanwhile, to improve airtightness, sealing rings are installed at the top openings of the first airflow channel 221 and the second airflow channel. In addition, the depth of the first air outlet 223 and the second air outlet is 0.02mm (which needs to be controlled within the exhaust gap value of the adhesive to prevent burrs). In a feasible embodiment, the first air outlet 223 and the second air outlet both include a guide inclined surface that is inclined toward the first guide groove 222 or the second guide groove, and a guide plane that communicates with the guide inclined surface and extends to the glossy surface of the product to guide the airflow and blow it toward the glossy surface of the product.

[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blower structure for demolding high-gloss products, comprising an A-plate, a front mold, and a rear mold, characterized in that, The contact surfaces of the front mold and the rear mold are provided with several U-shaped mounting slots, and a first front insert is installed in each mounting slot. The top of the first front insert is provided with a first airflow channel extending to the bottom, and the bottom of the first front insert is also provided with a first guide groove communicating with the first airflow channel along its length. On the side of the bottom of the first front insert near the rear mold, several first air blowing ports communicating with the first guide groove are also provided at intervals along its length. An air inlet is provided on one side of the A plate, and an air blowing connector is installed in the air inlet. A main airflow channel communicating with the air inlet is provided inside the A plate. Several first diversion channels communicating with the main airflow channel are also provided inside the A plate, and each first diversion channel is connected to a first airflow channel.

2. The air-blowing structure for demolding high-gloss products according to claim 1, characterized in that, A first mounting groove is provided on the top of the front mold near the rear mold, and a first through hole is provided in the first mounting groove near the rear mold. A second front insert is also installed in the first mounting groove, and a second airflow channel extending to the bottom is provided on the top of the second front insert. A second guide groove communicating with the second airflow channel is also provided in the middle of the bottom of the second front insert along its length direction, and a plurality of second air blowing ports communicating with the second guide groove are also provided at intervals along the length direction of the bottom of the second front insert near the first through hole. A second diversion channel communicating with the main airflow channel is also provided inside the A plate, and the second diversion channel is communicating with the second airflow channel.

3. The air-blowing structure for demolding high-gloss products according to claim 2, characterized in that, Both the first and second airflow channels have sealing rings installed at their top openings.

4. The air-blowing structure for demolding high-gloss products according to claim 2, characterized in that, The depth of the first and second air inlets is 0.02 mm.

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