A sloping tunnel-type glue injection mechanism for large plastic parts molds for electric vehicles

Abstract

This utility model provides a sloping-top tunnel-type injection mechanism for large plastic parts molds for electric vehicles. It includes a mold body and a plastic part forming core, integrally formed inside the mold body. It also includes a sliding insert block and a molding insert. The molding insert is embedded and formed in the notch of the plastic part forming core and participates in the plastic part forming process. The sliding insert block is embedded in the cavity of the plastic part forming core. A gating seat is provided at the top of the molding insert, and a tunnel-type injection channel communicating with the sliding insert block is provided at the top of the gating seat. The tunnel-type injection channel includes three channels: channel one, channel two, and channel three. One end of channel one communicates with channel three through channel two. A filling position communicating with channel three is provided on the side of the sliding insert block. This utility model solves the problems of overflow and leakage during injection molding, and has the advantages of reducing mold costs, ensuring product precision, avoiding surface defects, and ensuring quality.

Description

Technical Field

[0001] This utility model belongs to the technical field of glue injection mechanism, and relates to a sloping top tunnel-type glue injection mechanism for large plastic parts molds of electric vehicles. Background Technology

[0002] In the injection molding process, to ensure product quality, it is common practice to add modular splicing for injection. This structure has a higher production cost, and the product needs to be manually trimmed and polished after it is removed to ensure product quality.

[0003] Existing technology, such as the soft rubber injection mechanism disclosed in patent number CN201320000581.X, is applied in two-color molds. This soft rubber injection mechanism includes: a horn-shaped insert, composed of two individual inserts joined together; a horn-shaped runner, located at the junction of the two individual inserts, the runner being shaped like a smooth, curved cone resembling a horn, with its front end connected to the product; an insert, the upper end of which passes through the horn insert and mates with the junction of the two individual inserts to form the horn runner, the insert being located at the rear end of the horn runner; and an ejector pin, the upper part of which passes through the insert, tightly fitting with the insert. This mechanism is suitable for various two-color molds and can be used when creating new molds or during mold repair. It achieves a tight fit between the insert and the ejector pin, ensuring the required ejection tolerance and greatly preventing the ejector pin from jamming or breaking due to falling debris.

[0004] The disadvantages of the aforementioned injection mechanism are that there is a risk of glue overflow and leakage in the mold, which cannot guarantee the quality of the injection molded products. To address this, we have designed a sloping-top tunnel-type injection mechanism for large plastic parts molds for electric vehicles. Summary of the Invention

[0005] The purpose of this invention is to provide a sloping tunnel-type glue injection mechanism for large plastic parts molds for electric vehicles, so as to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solution: A sloping-top tunnel-type glue injection mechanism for a large plastic part mold for electric vehicles, comprising a mold body and a plastic part forming core, wherein the plastic part forming core is integrally formed and disposed on the inner side of the mold body, and further comprising a sliding insert block and a molding insert, wherein the molding insert is embedded and formed in the notch of the plastic part forming core and participates in the plastic part forming, wherein the sliding insert block is embedded in the cavity of the plastic part forming core, wherein the top of the molding insert is provided with a gating seat, wherein the top of the gating seat is provided with a tunnel-type glue injection channel communicating with the sliding insert block, wherein the tunnel-type glue injection channel comprises a channel one, a channel two and a channel three, wherein one end of the channel one communicates with the channel three through the channel two, and the side of the sliding insert block is provided with a filling glue position communicating with the channel three.

[0007] In the aforementioned inclined tunnel-type injection mechanism for large plastic parts molds in electric vehicles, the bottom end of the sliding insert block is provided with a push rod connecting part that connects to the mold body channel. A sliding ring is provided on the outer surface of the push rod connecting part. Multiple ball bearings are provided on the outer surface of the sliding ring, and these ball bearings are in rolling connection with the channel connecting to the mold body. This design aims to ensure good motion accuracy of the sliding insert block during demolding, reduce friction during contact, and minimize wear.

[0008] In the aforementioned inclined-top tunnel-type glue-feeding mechanism for large plastic parts molds in electric vehicles, a sealing connection is installed at the top of the sliding ring, and the sealing connection is in contact with the channel of the connecting mold body. This design aims to reduce gaps during assembly, ensuring a certain degree of tightness and connection of the sliding ring within the channel of the connecting mold body.

[0009] In the aforementioned inclined-top tunnel-type glue-feeding mechanism for a large plastic part mold for electric vehicles, a strip-shaped glue-feeding channel is provided at the top of the plastic part molding core, and a direct-flow channel is provided at the outlet of the strip-shaped glue-feeding channel. The purpose of this arrangement is to facilitate better entry of molten plastic.

[0010] In the aforementioned inclined-top tunnel-type glue-feeding mechanism for a large plastic part mold for electric vehicles, the top of the sliding insert block is provided with an insert molding surface, and the outer contour of the insert molding surface contacts the molding insert. This design aims to achieve a good molding effect.

[0011] Compared with the prior art, the advantages of the inclined tunnel-type injection mechanism for large plastic parts molds for electric vehicles are as follows: by setting a tunnel-type injection channel connecting the slide embedding block at the top of the injection base, the tunnel-type injection channel includes channel one, channel two and channel three. One end of channel one is connected to channel three through channel two. The side of the slide embedding block is provided with a filling position connecting to channel three, which solves the problems of overflow and leakage during injection molding. It has the advantages of reducing mold costs, ensuring product accuracy, avoiding surface defects and ensuring quality. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a sloping-top tunnel-type glue-injection mechanism for a large plastic part mold of an electric vehicle, according to this utility model.

[0013] Figure 2 This utility model relates to a sloping-top tunnel-type glue-feeding mechanism for large plastic parts molds for electric vehicles. Figure 1 A magnified structural diagram at point A.

[0014] Figure 3 This is a three-dimensional structural diagram of the sliding embedding block of the inclined tunnel-type glue injection mechanism for a large plastic part mold of an electric vehicle according to this utility model.

[0015] Figure 4 This is a schematic diagram of the top rod connection part of the inclined tunnel-type glue injection mechanism for a large plastic part mold of an electric vehicle according to this utility model.

[0016] Figure 5 This utility model relates to a sloping-top tunnel-type glue-feeding mechanism for large plastic parts molds for electric vehicles. Figure 1 A magnified structural diagram at point B.

[0017] In the diagram, 1. Mold body; 2. Molding core; 3. Sprue; 4. Molding surface of insert block; 5. Molding insert; 6. Runner 1; 7. Runner 2; 8. Runner 3; 9. Sliding insert block; 10. Filling position; 11. Sliding ring; 12. Ball bearing part; 13. Ejector pin connection part; 14. Sealing connection part; 15. Straight runner; 16. Strip-shaped sprue. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model relates to a sloping-top tunnel-type glue-feeding mechanism for large plastic parts molds for electric vehicles.

[0020] Example 1: The tunnel-type injection mechanism includes a mold body 1 and a plastic part forming mold core 2. The plastic part forming mold core 2 is integrally formed and disposed inside the mold body 1. It also includes a sliding insert block 9 and a molding insert 5. The molding insert 5 is embedded and formed in the notch of the plastic part forming mold core 2 and participates in the plastic part forming. The sliding insert block 9 is embedded in the cavity of the plastic part forming mold core 2. The top of the sliding insert block 9 is provided with an insert block forming surface 4. The outer contour of the insert block forming surface 4 contacts the molding insert 5.

[0021] The top of the molding insert 5 is provided with a casting seat 3, and the top of the casting seat 3 is provided with a tunnel-type glue inlet channel that connects to the positioning insert block 9. The tunnel-type glue inlet channel includes a first channel 6, a second channel 7 and a third channel 8. One end of the first channel 6 is connected to the third channel 8 through the second channel 7. The side of the positioning insert block 9 is provided with a filling glue position 10 that connects to the third channel 8.

[0022] This solution solves the problems of overflow and leakage during injection molding, and has the advantages of reducing mold costs, ensuring product precision, avoiding surface defects, and ensuring quality.

[0023] Example 2: The tunnel-type injection mechanism includes a mold body 1 and a plastic part forming mold core 2. The plastic part forming mold core 2 is integrally formed and disposed inside the mold body 1. It also includes a sliding insert block 9 and a molding insert 5. The molding insert 5 is embedded and formed in the notch of the plastic part forming mold core 2 and participates in the plastic part forming. The sliding insert block 9 is embedded in the cavity of the plastic part forming mold core 2. The top of the sliding insert block 9 is provided with an insert block forming surface 4. The outer contour of the insert block forming surface 4 contacts the molding insert 5. The top of the molding insert 5 is provided with a gating seat 3. The top of the gating seat 3 is provided with a tunnel-type injection channel communicating with the sliding insert block 9. The tunnel-type injection channel includes a first channel 6, a second channel 7 and a third channel 8. One end of the first channel 6 is connected to the third channel 8 through the second channel 7. The side of the sliding insert block 9 is provided with a filling position 10 communicating with the third channel 8. A push rod connecting part 13 is provided at the bottom end of the slide embedding block 9 to connect the channel of the mold body 1. A sliding ring 11 is provided on the outer surface of the push rod connecting part 13. A plurality of ball parts 12 are provided on the outer surface of the sliding ring 11, and the ball parts 12 are rolledly connected to the channel connecting the mold body 1.

[0024] In order to reduce the gap in the connection, a sealing connection part 14 is installed at the top of the sliding ring 11, and the sealing connection part 14 is in contact with the channel of the connecting mold body 1.

[0025] This solution utilizes the ball bearing portion 12 of the sliding ring 11 to roll into the channel connecting the mold body 1, converting contact friction into rolling friction. This enables the slide insert block 9 to have good motion accuracy during demolding, reducing friction during contact and reducing wear.

[0026] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A large plastic part mold of an electric vehicle with an inclined top tunnel type glue feeding mechanism, comprising a mold body (1) and a plastic part forming mold core (2) which is integrally formed on the inner side of the mold body (1), characterized in that, It also includes a slider insert block (9) and a forming insert (5). The forming insert (5) is embedded and formed in the notch of the plastic part forming die insert (2) and participates in the forming of the plastic part. The slider insert block (9) is embedded in the cavity of the plastic part forming die insert (2). A pouring seat (3) is provided at the top of the forming insert (5). A tunnel-type glue inlet runner connecting the slider insert block (9) is provided at the top of the pouring seat (3). The tunnel-type glue inlet runner includes a first runner (6), a second runner (7) and a third runner (8). One end of the first runner (6) is connected to the third runner (8) through the second runner (7). A filling glue position (10) communicating with the third runner (8) is provided on the side of the slider insert block (9).

2. A slanted-lift tunnel type glue injection mechanism for large plastic parts of an electric vehicle according to claim 1, characterized in that, A ejector rod connecting part (13) connecting to the channel of the mold body (1) is provided at the bottom end of the slider insert block (9). A sliding ring (11) is provided on the outer surface of the ejector rod connecting part (13).

3. The inclined pin tunnel gate mechanism for large plastic parts of electric vehicles according to claim 2, characterized in that, A plurality of ball parts (12) are provided on the outer surface of the sliding ring (11). The ball parts (12) are in rolling connection with the channel of the mold body (1).

4. The inclined-lift tunnel-type glue-feeding mechanism for large plastic parts of electric vehicles according to claim 2, characterized in that, A sealing connection part (14) is installed at the top end of the sliding ring (11). The sealing connection part (14) is in contact connection with the channel of the mold body (1).

5. A slanted-lift tunnel type glue injection mechanism for large plastic parts of an electric vehicle according to claim 1, characterized in that, A strip-shaped glue inlet channel (16) is provided at the top of the plastic part forming die insert (2). A straight runner (15) is provided at the outlet of the strip-shaped glue inlet channel (16).

6. A slanted-lift tunnel type glue injection mechanism for large plastic parts of an electric vehicle according to claim 1, characterized in that, An insert forming surface (4) is provided at the top end of the slider insert block (9). The outer contour of the insert forming surface (4) is in contact with the forming insert (5).

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