A metal piece placement mechanism for an injection mold

Abstract

The utility model discloses a metal spare placing mechanism for injection mold, include: the mold ejector pin plate of being arranged below the lower die plate, and the first spring has the abutment between lower die plate and mold ejector pin plate, is provided with the insert on the lower die plate, is provided with the placing step hole that cooperates with metal spare on the insert, and the sliding cooperation of placing step hole has the lifting block, so the upper end surface of lifting block can place metal spare, be connected with the ejector pin on mold ejector pin plate, and the ejector pin passes through the lower end of lifting block and is opposite, when opening the mold, the mold ejector pin plate moves towards the lower die plate, thereby the ejector pin lifts lifting block and moves upward, make the upper end surface of lifting block higher than the placing step hole, and then the metal spare is placed on the lifting block, when closing the mold, the mold ejector pin plate moves away from the lower die plate, thereby lifting block and the ejector pin reset, and then make metal spare fall in the placing step hole, through above -mentioned mode, the utility model discloses can be convenient for the metal spare of needing injection molding and place in the specified position of insert.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a metal part placement mechanism for injection molds. Background Technology

[0002] In the field of injection molding, it is often necessary to embed metal parts (such as inserts, connecting pieces, reinforcing ribs, etc.) into plastic parts to achieve specific functions or enhance product performance. This type of process usually requires the metal parts to be precisely placed in the predetermined positions of the inserts within the mold cavity before injection molding.

[0003] However, when metal parts must be located at the bottom of the final product according to product design requirements, or when the mold cavity structure is complex and the space available for operation within the mold is extremely limited, operators find it difficult to place the metal parts directly by hand or with conventional tools. They are usually forced to use tweezers, suction pens, or other slender tools to pick up and place the metal parts. This method is not only inefficient but also has many drawbacks. For example, it is difficult to accurately position the metal parts with tweezers in a confined space, and the parts are prone to displacement, tilting, or falling. Each placement requires careful handling, significantly extending the production cycle time for a single product. At the same time, the difficulty of operation can easily lead to operator fatigue. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a metal part placement mechanism for injection molds, which can facilitate the placement of metal parts to be injected into designated positions of inserts.

[0005] To solve the above-mentioned technical problems, the present invention provides a technical solution as follows: a metal part placement mechanism for injection molds, comprising: a mold ejector plate disposed below the lower mold plate, with a movable space between the mold ejector plate and the lower mold plate, and a first spring abutting between the lower mold plate and the mold ejector plate.

[0006] The lower template is provided with an insert, which has a step hole for placing a metal part. A lifting block is slidably fitted into the step hole, so the upper surface of the lifting block can be used to place a metal part.

[0007] Ejector pins are connected to the mold ejector plate, and the ejector pins pass through the lower mold plate and abut against the lower end of the lifting block;

[0008] When the mold is opened, the mold ejector plate moves toward the lower mold plate, thereby the ejector pins lift the lifting block and move it upward, so that the upper end of the lifting block is higher than the placement step hole, which makes it easier to place the metal part on the lifting block.

[0009] When the mold is closed, the mold ejector plate moves away from the lower mold plate, thereby resetting the lifting block and ejector pins, and causing the metal part to fall into the placement step hole.

[0010] Preferably, the lower template is provided with a pin assembly, which includes a base, a second spring and a plug. The base is fixedly connected to the lower template and has a sliding groove. The second spring is disposed in the sliding groove. One end of the plug slides in cooperation with the sliding groove. The two ends of the second spring abut against one end of the plug and the bottom of the sliding groove, respectively. The lifting block has a locking groove that cooperates with the plug to stabilize the position of the lifting block.

[0011] Preferably, the upper end of the lifting block extends with a limiting protrusion, which cooperates with the center hole of the metal part to limit the position of the metal part on the lifting block. The lifting block is provided with a positioning post, which cooperates with the hole on the edge of the metal part to position the metal part on the lifting block.

[0012] Preferably, the lifting block is provided with a detection air passage. One end of the detection air passage passes through the upper surface of the lifting block, and the other end of the detection air passage is connected to an external air source through a mold. The detection air passage is used to detect whether the metal part at the upper end of the lifting block is placed in place.

[0013] Preferably, a limiting block extends from the bottom of the lifting block toward one side of the base. The limiting block and the lifting block are arranged in an L-shape. The limiting block cooperates with part of the lower side of the base, thereby limiting the maximum height of the lifting block.

[0014] Preferably, the lifting block has a first slot and a second slot at different heights. The first slot is located above the second slot. When the mold is closed, the plug engages with the first slot, and when the mold is opened, the plug engages with the second slot.

[0015] The beneficial effects of this utility model are as follows: By setting a lifting block driven by a mold ejector plate and ejector pins below the lower mold plate, and cooperating with the placement step hole on the insert, the lifting block can be lifted and raised above the surface of the insert when the mold is opened, thereby greatly expanding the placement and operation space of the metal parts and significantly reducing the difficulty and operation time of placing metal parts in narrow or deep cavity molds; at the same time, by setting multiple positioning, locking, detection and limiting structures such as pin components, limiting protrusions, positioning pillars, detection air paths and limiting blocks, the accuracy and stability of the position of the metal parts during placement, lifting, resetting and injection molding are effectively ensured, greatly improving production efficiency and product qualification rate, and enhancing the reliability and safety of the mechanism operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 yes Figure 1 Enlarged diagram of section A in the middle;

[0018] Figure 3 This is a schematic diagram showing the positional relationship of the metal parts on the insert;

[0019] Figure 4 yes Figure 3 Enlarged schematic diagram of section B in the middle;

[0020] Figure 5 This is a schematic diagram of the insert structure when the metal part is not on the insert;

[0021] Figure 6 yes Figure 5 Enlarged schematic diagram of section C.

[0022] The components in the attached diagram are labeled as follows:

[0023] 1. Download the template;

[0024] 2. Mold ejector plate; 21. Ejector pin;

[0025] 3. The first spring;

[0026] 4. Inlay; 41. Hole for placing steps;

[0027] 5. Lifting block; 51. First slot; 52. Second slot; 53. Limiting protrusion; 54. Positioning post;

[0028] 55. Limiting block;

[0029] 61. Base; 62. Second spring; 63. Plug;

[0030] 7. Inspect the gas path; 8. Metal parts. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0037] Unless otherwise specified, physical quantities in formulas should be understood as basic quantities of SI base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0038] Example:

[0039] refer to Figure 1 A metal part 8 placement mechanism for injection molds includes: a mold ejector plate 2 installed below the lower mold plate 1, with a movable space between the mold ejector plate 2 and the lower mold plate 1, and a first spring 3 abutting between the lower mold plate 1 and the mold ejector plate 2, thereby supporting the relative position between the mold ejector plate 2 and the lower mold plate 1 through the first spring 3, and controlling the relative position between the mold ejector plate 2 and the lower mold plate 1 by compressing or releasing the first spring 3 as needed.

[0040] refer to Figures 1-6 An insert 4 is mounted on the lower mold plate 1. The insert 4 has a placement step hole 41 that mates with the metal part 8, thus supporting the position of the metal part 8 and facilitating injection molding. A lifting block 5 is slidably fitted to the placement step hole 41, and the upper end of the lifting block 5 can hold the metal part 8. An ejector pin 21 is connected to the mold ejector plate 2. The ejector pin 21 passes through the lower mold plate 1 and abuts against the lower end of the lifting block 5. When the mold is opened, the mold ejector plate 2 moves toward the lower mold plate 1, thereby lifting the lifting block 5 upward by the ejector pin 21, so that the upper end of the lifting block 5 is higher than the placement step hole 41, making it easier for the operator to place the metal part 8 on the lifting block 5 and reducing the difficulty of placing the metal part 8 directly onto the placement step hole 41 on the insert 4. When the mold is closed, the mold ejector plate 2 moves away from the lower mold plate 1, thereby resetting the lifting block 5 and the ejector pin 21, so that the metal part 8 falls into the placement step hole 41.

[0041] refer to Figure 2To stabilize the position of the lifting block 5 during mold opening or closing, and thus stabilize the position of the metal part 8, a pin assembly is installed on the lower template 1. The pin assembly includes a base 61, a second spring 62, and a plug 63. The base 61 is bolted to the lower template 1 and has a sliding groove. The second spring 62 is installed in the sliding groove. One end of the plug 63 near the base 61 slides into the sliding groove. The two ends of the second spring 62 abut against one end of the plug 63 and the bottom of the sliding groove, respectively, thereby providing a force to the plug 63 toward the lifting block 5. The lifting block 5 has a locking groove that engages with the plug 63, thereby stabilizing the position of the lifting block 5. The lifting block 5 has a first slot 51 and a second slot 52 at different heights. The first slot 51 is located above the second slot 52. When the mold is closed, the plug 63 cooperates with the first slot 51 to stabilize the position of the lifting block 5 when the mold is closed, thereby stabilizing the position of the metal part 8 and ensuring the injection molding quality. When the mold is opened, the plug 63 cooperates with the second slot 52 to stabilize the position of the lifting block 5 when the mold is opened, so as not to affect the operator from placing the metal part 8 on the upper surface of the lifting block 5.

[0042] refer to Figure 2 , Figure 4 and Figure 6 To ensure the accuracy and stability of the position of the metal part 8 when placed on the lifting block 5, a limiting protrusion 53 extends from the upper end of the lifting block 5. The limiting protrusion 53 cooperates with the center hole of the metal part 8 to limit the position of the metal part 8 on the lifting block 5. A positioning post 54 is installed on the lifting block 5. The positioning post 54 cooperates with the hole on the edge of the metal part 8 to position the metal part 8 on the lifting block 5, thereby ensuring the consistency of the position of the metal part 8 on the lifting block 5 and thus ensuring the quality of the product.

[0043] refer to Figure 2 To further ensure the height of the lifting block 5 during mold opening, a limiting block 55 extends from the bottom of the lifting block 5 towards the base 61, so that the limiting block 55 and the lifting block 5 are arranged in an L-shape. The limiting block 55 cooperates with part of the lower side of the base 61. When the lifting block 5 rises to the position, the upper side of the limiting block 55 abuts against the lower side of the base 61, preventing the lifting block 5 from rising further, thereby limiting the maximum height of the lifting block 5 and ensuring the consistency of the upper height of the lifting block 5.

[0044] refer to Figure 1 , Figure 2 and Figure 6To detect whether the metal part 8 is placed on the lifting block 5 and in the correct position, a detection air passage 7 is provided on the lifting block 5. One end of the detection air passage 7 passes through the upper surface of the lifting block 5, and the other end of the detection air passage 7 is connected to an external air source through a mold. The detection air passage 7 is used to detect whether the metal part 8 on the upper end of the lifting block 5 is placed in the correct position. If the metal part 8 is placed in the correct position, the lower surface of the metal part 8 forms a seal with one end of the detection air passage 7, thereby preventing airflow from blowing out from one end of the detection air passage 7. The position of the metal part 8 can be determined by observing the air pressure range of the pressure gauge on the detection air passage 7. The airflow of the detection air passage 7 is relatively small and will not blow away the metal part 8. In addition, there is a certain friction between the metal part 8 and the limiting protrusion 53, which can also ensure the position of the metal part 8 on the lifting block 5.

[0045] Operation process: When the mold opens, the first spring 3 is compressed, the ejector pin rises, and the lifting block 5 is lifted, so that the upper end of the lifting block 5 is higher than the height of the insert 4, making it easier for the operator to place the metal part 8 on the lifting block 5. At this time, the height of the second slot 52 is exactly aligned with the plug 63. Under the action of the second spring 62, the plug 63 is inserted into the second spring 62. After the metal part 8 is placed, the mold begins to close. At this time, the first spring 3 is released, the ejector pin 21 descends, and at the same time, other parts at the upper mold press on the metal part 8, thereby forcing the lifting block 5 to descend. Because the surface of the plug 63 inserted into the second slot 52 is relatively rounded or inclined, when the lifting block 5 is pressed down with a suitable force, the plug 63 retracts into the slide under the pressure. When the lifting block 5 descends to the position, the metal part 8 falls exactly on the placement step hole 41. At this time, the mold closing is completed, and injection molding is performed.

[0046] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A metal part placement mechanism for injection molds, characterized in that, include: A mold ejector plate (2) is set below the lower template (1), and there is a space for movement between the mold ejector plate (2) and the lower template (1). A first spring (3) abuts against the lower template (1) and the mold ejector plate (2). The lower template (1) is provided with an insert (4), and the insert (4) is provided with a placement step hole (41) that cooperates with the metal part (8). The placement step hole (41) is slidably fitted with a lifting block (5), so the upper end face of the lifting block (5) can be used to place the metal part (8). The mold ejector plate (2) is connected to an ejector pin (21), which passes through the lower template (1) and abuts against the lower end of the lifting block (5); When the mold is opened, the mold ejector plate (2) moves toward the lower template (1), so that the ejector (21) lifts the lifting block (5) to move upward, so that the upper end face of the lifting block (5) is higher than the placement step hole (41), which makes it easier for the metal part (8) to be placed on the lifting block (5). When the mold is closed, the mold ejector plate (2) moves away from the lower mold plate (1), thereby resetting the lifting block (5) and ejector pin (21), and causing the metal part (8) to fall into the placement step hole (41).

2. The metal part placement mechanism for injection molds according to claim 1, characterized in that: The lower template (1) is provided with a pin assembly, which includes a base (61), a second spring (62) and a plug (63). The base (61) is fixedly connected to the lower template (1). A sliding groove is provided on the base (61). The second spring (62) is disposed in the sliding groove. One end of the plug (63) is slidably engaged with the sliding groove. The two ends of the second spring (62) abut against one end of the plug (63) and the bottom of the sliding groove, respectively. A slot is provided on the lifting block (5). The slot engages with the plug (63) to stabilize the position of the lifting block (5).

3. The metal part placement mechanism for injection molds according to claim 1, characterized in that: The upper end of the lifting block (5) extends a limiting protrusion (53), which cooperates with the center hole of the metal part (8) to limit the position of the metal part (8) on the lifting block (5). The lifting block (5) is provided with a positioning post (54), which cooperates with the hole on the edge of the metal part (8) to position the metal part (8) on the lifting block (5).

4. A metal part placement mechanism for injection molds according to claim 1, characterized in that: The lifting block (5) is provided with a detection air passage (7). One end of the detection air passage (7) passes through the upper surface of the lifting block (5), and the other end of the detection air passage (7) is connected to an external air source through a mold. The detection air passage (7) is used to detect whether the metal part (8) at the upper end of the lifting block (5) is placed in place.

5. A metal part placement mechanism for injection molds according to claim 2, characterized in that: The bottom of the lifting block (5) extends to the side of the base (61) with a limiting block (55). The limiting block (55) and the lifting block (5) are arranged in an L-shape. The limiting block (55) cooperates with part of the lower side of the base (61) to limit the maximum height of the lifting block (5).

6. A metal part placement mechanism for injection molds according to claim 2, characterized in that: The lifting block (5) is provided with a first slot (51) and a second slot (52) at different heights. The first slot (51) is located above the second slot (52). When the mold is closed, the plug (63) engages with the first slot (51). When the mold is opened, the plug (63) engages with the second slot (52).

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