Secondary ejection mechanism and mold

Abstract

The utility model discloses a secondary ejection mechanism which comprises a fixed block, a pair of ejection blocks, a pair of limiting blocks, a pair of first springs, a first driving rod, a second spring and a guide column, wherein the fixed block is connected with a movable mold plate base plate of the mold, and a pair of first inclined grooves and a pair of first sliding grooves are formed in the fixed block; the pair of ejection blocks are respectively arranged in the pair of first chutes; the pair of limiting blocks are arranged at the bottoms of the pair of first chutes respectively; the pair of first springs are connected with the pair of ejection blocks and the pair of limiting blocks in a one-to-one correspondence manner; the first driving rod is movably arranged in the first sliding groove. The lower end of the second spring is connected with the first driving rod; the guide column is in an inverted-T shape and is fixedly connected with the first driving rod. The utility model further discloses a mold which comprises a pair of secondary ejection mechanisms of the previous embodiment. According to the secondary ejection mechanism, the space occupied by the secondary ejection mechanism on the mold is effectively reduced, meanwhile, the structural cost is also reduced, and the maintenance is relatively simple and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and particularly relates to a secondary ejection mechanism and a mold. Background Art

[0002] Alone relying on the ejector pin, the internal sliding block cannot be separated from the product, and it needs two ejections to separate the internal sliding block from the product. In the prior art, molds with a secondary ejection mechanism often have a complex structure and a high production cost. Therefore, there is an urgent need to develop a secondary ejection mechanism with a simple structure and convenient disassembly. Summary of the Invention

[0003] According to an embodiment of the present utility model, there is provided a secondary ejection mechanism for use in a mold, comprising:

[0004] A fixed block, which is connected to the moving template backing plate of the mold. A pair of first inclined slots and a first sliding slot are provided on the fixed block. The first sliding slot is arranged between the pair of first inclined slots, communicates with the pair of first inclined slots and penetrates through the fixed block;

[0005] A pair of ejection blocks, which are respectively arranged in the pair of first inclined slots and can slide in the first inclined slots;

[0006] A pair of limiting blocks, which are respectively arranged at the bottoms of the pair of first inclined slots and fixedly connected to the fixed block;

[0007] A pair of first springs, which correspond to the pair of ejection blocks and the pair of limiting blocks one by one. One end is connected to the corresponding ejection block, and the other end is connected to the corresponding limiting block, for the reset of the ejection block;

[0008] A first driving rod, which is movably arranged in the first sliding slot and can drive the pair of ejection blocks to move;

[0009] A second spring, the lower end of which is connected to the first driving rod, for the reset of the first driving rod;

[0010] A guide post (also called a KO post), the guide post is in a "convex" shape, and the guide post is fixedly connected to the first driving rod.

[0011] Further, a first limiting slot is provided on the ejection block, and the first spring is arranged in the first limiting slot.

[0012] Further, a second limiting slot is provided on the first driving rod, and the lower end of the second spring is arranged in the second limiting slot.

[0013] Further, the diameter of the first driving rod is greater than the diameter of the upper end of the guide post.

[0014] Further, the guide post and the first driving rod are fixedly connected by bolts.

[0015] According to another embodiment of the present utility model, a mold is provided, which includes a pair of secondary ejection mechanisms of the previous embodiment, an ejector plate, an ejector pad and a bottom plate;

[0016] A second chute is provided on the ejector plate;

[0017] A third chute and a third limiting groove are provided on the ejector pad;

[0018] The second chute, the third chute and the third limiting groove are communicated with each other;

[0019] The lower end of the first driving rod is slidably arranged in the second chute and the third chute;

[0020] The upper end of the guiding column can slide in the third limiting groove;

[0021] A fourth chute is provided on the bottom plate, and the lower end of the guiding column is slidably arranged in the fourth chute.

[0022] Advantages of the present utility model: The space occupied by the secondary ejection mechanism on the mold is effectively reduced, and at the same time, the structural cost is also reduced, and the maintenance is relatively simple and fast.

[0023] It should be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a secondary ejection mechanism according to the first embodiment of the present utility model;

[0025] Figure 2 is Figure 1 a top view of

[0026] Figure 3 is Figure 2 a sectional view taken along line A-A of

[0027] Figure 4 is a partial structural diagram of a mold according to the second embodiment of the present utility model;

[0028] Figure 5 is Figure 4 a top view of

[0029] Figure 6 is Figure 5 a sectional view taken along line B-B of

[0030] Figure 7 is a schematic structural diagram when the guiding column drives the ejector plate and the ejector pad to move upward to the maximum distance according to the second embodiment of the present utility model;

[0031] Figure 8Internal structure schematic diagram according to the second embodiment of the present utility model. Detailed implementation manners

[0032] The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings, and the present utility model will be further elaborated.

[0033] First, in conjunction with Figures 1 to 3 and 6, the secondary ejection mechanism according to the embodiment of the present utility model is described, which is used in a mold and has a wide range of application scenarios.

[0034] As Figures 1 to 3 shown in and 6, the secondary ejection mechanism of the first embodiment of the present utility model, which is used in a mold, includes:

[0035] A fixed block 1, the fixed block 1 is connected to the moving template backing plate 82 of the mold. A pair of first inclined grooves 11 and a first sliding groove 12 are provided on the fixed block 1. The first sliding groove 12 is arranged between the pair of first inclined grooves 11, communicates with the pair of first inclined grooves 11 and penetrates through the fixed block 1;

[0036] A pair of ejection blocks 2, the pair of ejection blocks 2 are respectively arranged in the pair of first inclined grooves 11 and can slide in the first inclined grooves 11;

[0037] A pair of limit blocks 3, the pair of limit blocks 3 are respectively arranged at the bottoms of the pair of first inclined grooves 11 and are fixedly connected to the fixed block 1;

[0038] A pair of first springs 4, the pair of first springs 4 correspond to the pair of ejection blocks 2 and the pair of limit blocks 3 one by one. One end is connected to the corresponding ejection block 2, and the other end is connected to the corresponding limit block 3 for the reset of the ejection block 2;

[0039] A first driving rod 5, the first driving rod 5 is movably arranged in the first sliding groove 12 and can drive the pair of ejection blocks 2 to move;

[0040] A second spring 6, the lower end of the second spring 6 is connected to the first driving rod 5, and the upper end protrudes from the first sliding groove 12 for the reset of the first driving rod 5;

[0041] A guide post 7, the guide post 7 is in a "convex" shape for limiting the upward movement distance of the guide post 7. The guide post 7 is fixedly connected to the first driving rod 5 and can drive the first driving rod 5 to move.

[0042] Furthermore, as Figure 1 and 3 shown, in this embodiment, a first limit groove 21 is provided on the ejection block 2, and the first spring 4 is arranged in the first limit groove 21, and the first limit groove 21 is used to limit the first spring 4.

[0043] Furthermore, as Figure 1 and 3As shown, in this embodiment, a second limiting groove 51 is provided on the first driving rod 5, and the lower end of the second spring 6 is arranged in the second limiting groove 51, and the second limiting groove 51 is used to limit the second spring 6.

[0044] Furthermore, as Figure 1 , 3 shown, in this embodiment, the diameter of the first driving rod 5 is larger than the diameter of the upper end of the guiding column 7.

[0045] Furthermore, as Figure 3 shown, in this embodiment, the guiding column 7 and the first driving rod 5 are fixedly connected by bolts.

[0046] Secondly, as Figures 4 to 8 shown, according to the second embodiment of the present invention, a mold is provided, which includes a pair of secondary ejection mechanisms of the first embodiment, an ejector plate 83, an ejector pad 84 and a bottom plate 85;

[0047] A second sliding groove 831 is provided on the ejector plate 83;

[0048] A third sliding groove 841 and a third limiting groove 842 are provided on the ejector pad 84;

[0049] The second sliding groove 831, the third sliding groove 841 and the third limiting groove 842 are communicated;

[0050] The lower end of the first driving rod 5 is slidably arranged in the second sliding groove 831 and the third sliding groove 841;

[0051] The upper end of the guiding column 7 can slide in the third limiting groove 842, and the lower end cannot move upward through the third limiting groove 842, and the third limiting groove 842 plays a role in limiting and guiding the guiding column 7;

[0052] A fourth sliding groove 851 is provided on the bottom plate 85, and the lower end of the guiding column 7 is slidably arranged in the fourth sliding groove 851 and can slide in the fourth sliding groove 851.

[0053] Working principle:

[0054] When the mold is closed, the moving template 81 moves downward to compress the second spring 6, and the second spring 6 is compressed. After the injection molding is completed, the external jacking mechanism drives the guide post 7 to move upward, and the first driving rod 5 moves upward accordingly. The first driving rod 5 drives a pair of ejector blocks 2 to move obliquely upward in the corresponding first inclined slots 11, the first spring 4 is stretched, and the ejector blocks 2 jack up the upper moving template 81 until the lower step surface of the guide post 7 contacts the ejector pad 84. At this time, the first driving rod 5 is located between the pair of ejector blocks 2 and cannot drive the ejector blocks 2 to move upward anymore. At this time, the distance between the moving template 81 and the moving template backing plate 82 is fixed. Then, due to the limitation of the third limiting groove 842, when the guide post 7 continues to move upward, it will drive the ejector pad 84 and the ejector retaining plate 83 to move upward, driving the ejector pad 84 and the ejector retaining plate 83 to perform an ejection action until the product is ejected from the mold.

[0055] Above, with reference to Figures 1 to 8 The secondary ejection mechanism and the mold according to the embodiments of the present invention are described, effectively reducing the space occupied by the secondary ejection mechanism on the mold, reducing the structural cost at the same time, and being relatively simple and fast to maintain.

[0056] It should be noted that in this specification, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "comprising..." do not exclude the presence of additional identical elements in the process, method, article or device including the elements.

[0057] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. After those skilled in the art have read the above content, various modifications and substitutions of the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A secondary ejection mechanism for use in a mold, characterized in that Comprising: A fixed block, which is connected to the moving template backing plate of the mold. A pair of first inclined grooves and a first sliding groove are provided on the fixed block. The first sliding groove is arranged between the pair of first inclined grooves, communicates with the pair of first inclined grooves and penetrates through the fixed block; A pair of ejector blocks, which are respectively arranged in the pair of first inclined grooves and can slide in the first inclined grooves; A pair of limit blocks, which are respectively arranged at the bottoms of the pair of first inclined grooves and are fixedly connected to the fixed block; A pair of first springs, which correspond to the pair of ejector blocks and the pair of limit blocks one by one. One end is connected to the corresponding ejector block, and the other end is connected to the corresponding limit block, for the reset of the ejector block; A first driving rod, which is movably arranged in the first sliding groove and can drive the pair of ejector blocks to move; A second spring, the lower end of which is connected to the first driving rod, for the reset of the first driving rod; A guide post, which is "convex" in shape and is fixedly connected to the first driving rod.

2. The secondary ejection mechanism according to claim 1, wherein, A first limit groove is provided on the ejector block, and the first spring is arranged in the first limit groove.

3. The secondary ejection mechanism according to claim 1, characterized in that, A second limit groove is provided on the first driving rod, and the lower end of the second spring is arranged in the second limit groove.

4. The secondary ejection mechanism according to claim 1, characterized in that, The diameter of the first driving rod is larger than the diameter of the upper end of the guide post.

5. The secondary ejection mechanism according to claim 1, wherein The guide post and the first driving rod are fixedly connected by bolts.

6. A mold, comprising a pair of secondary ejection mechanisms as described in any one of claims 1 to 5, an ejector pin fixing plate, an ejector pin backing plate and a bottom plate; characterized in that, A second sliding groove is provided on the ejector pin fixing plate; A third sliding groove and a third limit groove are provided on the ejector pin backing plate; The second sliding groove, the third sliding groove and the third limit groove communicate with each other; The lower end of the first driving rod is slidably arranged in the second sliding groove and the third sliding groove; The upper end of the guide post can slide in the third limit groove; A fourth sliding groove is provided on the bottom plate, and the lower end of the guide post is slidably arranged in the fourth sliding groove.

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