A limiting ejection structure with ribs in the instrument airbag area of an injection mold

Abstract

The present invention provides a structure for limiting and ejecting ribs in the instrument airbag area of an injection mold, which includes a core plate, an ejector rod panel, an ejector rod bottom plate, and a moving mold fixing plate. A core insert is arranged at the top of the core plate, and a large inclined ejector block is arranged at the top of the core insert. The lower part of the large inclined ejector block is connected to the ejector rod panel and the ejector rod bottom plate through an inclined ejector rod after passing through the core insert and the core plate. Straight ejector blocks with ribs on the top surface are arranged on the left and right sides of the large inclined ejector block. A straight ejector rod is connected below the straight ejector block. The lower end of the straight ejector rod is connected with a straight ejector pad after passing through the core plate. A straight ejector limit block extending upward is arranged on the top surface of the straight ejector pad. A nitrogen spring is connected below the straight ejector pad. The nitrogen spring is installed on a nitrogen spring mounting seat. The straight ejector pad is arranged in the ejector rod panel, and the nitrogen spring mounting seat is arranged in the ejector rod bottom plate. An ejecting limit block is arranged on the top surface of the ejector rod panel. The structure of the present invention is simple and novel, ensuring the complete demolding of the product and realizing mechanical part taking.

Description

Technical Field

[0001] The present invention relates to an ejection structure of an injection mold, and particularly to a reinforcing rib limiting ejection structure in the instrument airbag area of an injection mold. Background Art

[0002] The product features in the instrument airbag area are complex. The main part of the airbag adopts a cross large inclined ejector core pulling demolding structure. Straight ejector blocks must be designed on both sides of the large inclined ejector to support the product and prevent the product from shifting due to excessive clamping force when the large inclined ejector core is pulled. However, due to the large number of reinforcing ribs on the lower surface of the product, a large number of reinforcing ribs need to be arranged on the top surfaces of the straight ejector blocks on both sides. After the product is ejected, the rib positions are still wrapped in the straight ejector blocks, making it impossible to achieve mechanical part taking and easily scratching the product. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a reinforcing rib limiting ejection structure in the instrument airbag area of an injection mold.

[0004] The technical solution of the present invention is a reinforcing rib limiting ejection structure in the instrument airbag area of an injection mold, including a core plate, an ejector rod panel, an ejector rod bottom plate, and a moving mold fixing plate. A core insert is provided at the top of the core plate. A large inclined ejector block is provided at the top of the core insert. The large inclined ejector block is connected to the ejector rod panel and the ejector rod bottom plate through an inclined ejector rod passing through the core insert and the core plate. Straight ejector blocks with reinforcing ribs on the top surfaces are provided on the left and right sides of the large inclined ejector block. A straight ejector rod is connected below the straight ejector block. The straight ejector rod passes through the core plate and is connected to a straight ejector pad at the lower end. A straight ejector limiting block extending upward is provided on the top surface of the straight ejector pad. A nitrogen spring is connected below the straight ejector pad. The nitrogen spring is installed on a nitrogen spring mounting seat. The straight ejector pad is arranged in the ejector rod panel. The nitrogen spring mounting seat is arranged in the ejector rod bottom plate. An ejection limiting block is provided on the top surface of the ejector rod panel. The height of the top surface of the straight ejector limiting block is higher than the height of the top surface of the ejection limiting block.

[0005] Preferably, a self-lubricating guide sleeve is provided in the core plate, and the straight ejector rod passes through the self-lubricating guide sleeve in the core plate.

[0006] Preferably, ejector rods are also provided at the ejector rod panel and the ejector rod bottom plate. When the ejector rod panel and the ejector rod bottom plate are driven by an ejection oil cylinder to move upward, the straight ejector rod ejects upward until the straight ejector limiting block contacts the core plate and compresses the nitrogen spring. The ejector rod continues to eject upward to eject the product so that the surface of the product is separated from the straight ejector block.

[0007] Preferably, the direct ejector block includes a left direct ejector block and a right direct ejector block. The left direct ejector block is located on the left side of the large angled ejector block, and the right direct ejector block is located on the right side of the large angled ejector block. The ejector rod under the left direct ejector block is located outside the core insert and passes through the core plate and then connects to the direct ejector pad in the ejector rod panel. The ejector rod under the right direct ejector block passes through the core insert and the core plate and then connects to the direct ejector pad in the ejector rod panel.

[0008] Preferably, the height by which the top surface of the direct ejector limit block is higher than the top surface of the ejection limit block is 20 mm.

[0009] The structure of the present invention is simple and novel. A limit ejection structure is added at the bottom of the ejector rod. When the direct ejector block reaches the last section of the ejection structure, under the action of the direct ejector limit block and the nitrogen spring, the direct ejector block stops ejecting, and the rib of the product is separated from the direct ejector block under the action of the ejector rod, ensuring the complete demolding of the product and realizing mechanical picking. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of the present invention;

[0011] Figure 2 is a structural sectional view of the present invention;

[0012] Figure 3 is a schematic structural diagram of the right direct ejector block in the present invention;

[0013] Figure 4 is a schematic structural diagram of the left direct ejector block in the present invention;

[0014] Wherein: 1 - core plate; 2 - ejector rod panel; 3 - ejector rod bottom plate; 4 - moving die fixing plate; 5 - core insert; 6 - large angled ejector block; 7 - angled ejector rod; 8 - direct ejector block; 81 - left direct ejector block; 82 - right direct ejector block; 9 - ejector rod; 10 - direct ejector pad; 11 - direct ejector limit block; 12 - nitrogen spring; 13 - nitrogen spring mounting seat; 14 - ejection limit block; 15 - self-lubricating bushing; 16 - ejector rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present invention will be further described in detail below with reference to the accompanying drawings.

[0016] As Figures 1 to 4As shown in the figure, the present invention provides a limiting ejection structure of a reinforcing rib for the instrument airbag area of an injection mold, which includes a core plate 1, an ejector rod panel 2, an ejector rod bottom plate 3, and a moving mold fixing plate 4. A core insert 5 is arranged on the top of the core plate 1, a large inclined ejector block 6 is arranged on the top of the core insert 5, and the lower part of the large inclined ejector block 6 is connected to the ejector rod panel 2 and the ejector rod bottom plate 3 through an inclined ejector rod 7 after passing through the core insert 5 and the core plate 1. Straight ejector blocks 8 with reinforcing ribs on the top surface are arranged on the left and right sides of the large inclined ejector block 6. A straight ejector rod 9 is connected to the lower part of the straight ejector block 8. The lower end of the straight ejector rod 9 is connected to a straight ejector pad 10 after passing through the core plate 1. A straight ejector limiting block 11 extending upward is arranged on the top surface of the straight ejector pad 10. A nitrogen spring 12 is connected to the lower part of the straight ejector pad 10. The nitrogen spring 12 is installed on a nitrogen spring mounting seat 13. Among them, a compression spring can also be used below the straight ejector pad 10, or it can be arranged in a combination of a compression spring and a nitrogen spring. The straight ejector pad 10 is arranged in the ejector rod panel 2, and the nitrogen spring mounting seat 13 is arranged in the ejector rod bottom plate 3. An ejection limiting block 14 is arranged on the top surface of the ejector rod panel 2. The height of the top surface of the straight ejector limiting block 11 is higher than the height of the top surface of the ejection limiting block 14.

[0017] On the basis of the above solution, a self-lubricating guide sleeve 15 is arranged in the core plate 1, and the straight ejector rod 9 passes through the self-lubricating guide sleeve 15 in the core plate 1.

[0018] In addition, ejector rods 16 are also arranged at the ejector rod panel 2 and the ejector rod bottom plate 3. When the ejector cylinder drives the ejector rod panel 2 and the ejector rod bottom plate 3 to move upward, the straight ejector rod 9 ejects upward until the straight ejector limiting block 11 contacts the core plate 1 and then compresses the nitrogen spring 12. The ejector rod 16 continues to eject upward to eject the product so that the surface of the product is separated from the straight ejector block 8.

[0019] In addition, the straight ejector block 8 includes a left straight ejector block 81 and a right straight ejector block 82. The left straight ejector block 81 is located on the left side of the large inclined ejector block 6, and the right straight ejector block 82 is located on the right side of the large inclined ejector block 6. The straight ejector rod 9 below the left straight ejector block 81 is located outside the core insert 5 and is connected to the straight ejector pad 10 in the ejector rod panel 2 after passing through the core plate 1. The straight ejector rod 9 below the right straight ejector block 82 passes through the core insert 5 and the core plate 1 and is connected to the straight ejector pad 10 in the ejector rod panel 2.

[0020] Preferably, the height by which the top surface of the straight ejector limiting block 11 is higher than the top surface of the ejection limiting block 14 is 20 mm.

[0021] During the use of the present invention, after the mold is opened, the ejector oil cylinder ejects the ejector rod panel 2 and the ejector rod bottom plate 3 upward. The straight ejector rod 9, the inclined ejector rod 7, and the ejector rod 16 cooperate to eject the product upward to separate it from the core insert 5. The large inclined ejector block 6 at the top of the inclined ejector rod 7 moves upward and withdraws from the product surface outward. When the straight ejector rod 9 ejects until the straight ejector limit block 11 contacts the core plate 1, when the ejector rod panel 2 and the ejector rod bottom plate 3 continue to eject upward, the nitrogen spring 12 at the bottom of the straight ejector rod 9 starts to compress, and the straight ejector block 8 stops moving upward. At this time, the ejector rod 16 continues to eject the product upward; within the subsequent 20 mm stroke, the product surface has been separated from both the large inclined ejector block 6 and the straight ejector block 8, and the product surface only fits with the ejector block at the top of the ejector rod 16. When the ejector limit block 14 on the ejector rod panel 2 contacts the core plate 1, the ejector oil cylinder ejects in place, and the manipulator can easily take out the product above the ejector block without damaging the product surface.

[0022] The above is only the preferred embodiment of the present invention, and it does not impose any formal restrictions on the invention. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. An injection mold instrument airbag area rib limiting ejection structure, comprising a core plate (1), an ejector rod panel (2), an ejector rod bottom plate (3) and a moving mold fixing plate (4), characterized in that: A core insert (5) is provided at the top of the core plate (1). A large angled ejector block (6) is provided at the top of the core insert (5). Below the large angled ejector block (6), an angled ejector rod (7) passes through the core insert (5) and the core plate (1) and is connected to the ejector plate (2) and the ejector plate base (3). Straight ejector blocks (8) with ribs on the top surface are provided on the left and right sides of the large angled ejector block (6). A straight ejector rod (9) is connected below the straight ejector block (8). After passing through the core plate (1), the lower end of the straight ejector rod (9) is connected to a straight ejector pad (10). A straight ejector limit block (11) extending upward is provided on the top surface of the straight ejector pad (10). A nitrogen spring (12) is connected below the straight ejector pad (10). The nitrogen spring (12) is installed on a nitrogen spring mounting seat (13). The straight ejector pad (10) is arranged inside the ejector plate (2), and the nitrogen spring mounting seat (13) is arranged inside the ejector plate base (3). An ejector limit block (14) is provided on the top surface of the ejector plate (2). The height of the top surface of the straight ejector limit block (11) is higher than the height of the top surface of the ejector limit block (14). A self-lubricating bushing (15) is provided inside the core plate (1), and the straight ejector rod (9) passes through the self-lubricating bushing (15) inside the core plate (1). Ejector rods (16) are also provided at the ejector plate (2) and the ejector plate base (3). When the ejector cylinder drives the ejector plate (2) and the ejector plate base (3) to move upward, the straight ejector rod (9) ejects upward until the straight ejector limit block (11) contacts the core plate (1), compressing the nitrogen spring (12). Then the ejector rod (16) continues to eject upward to eject the product so that the surface of the product separates from the straight ejector block (8).

2. The ejector structure with rib limit for the instrument airbag area of an injection mold according to claim 1, characterized in that: The straight ejector block (8) includes a left straight ejector block (81) and a right straight ejector block (82). The left straight ejector block (81) is located on the left side of the large angled ejector block (6), and the right straight ejector block (82) is located on the right side of the large angled ejector block (6). The straight ejector rod (9) below the left straight ejector block (81) is located outside the core insert (5), passes through the core plate (1), and is connected to the straight ejector pad (10) inside the ejector plate (2). The straight ejector rod (9) below the right straight ejector block (82) passes through the core insert (5) and the core plate (1) and is connected to the straight ejector pad (10) inside the ejector plate (2).

3. The ejector structure with a limiting rib for strengthening the instrument airbag area of an injection mold according to claim 1, wherein: The height by which the top surface of the straight ejector limit block (11) is higher than the top surface of the ejector limit block (14) is 20 mm.

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