A kind of inclined top demoulding structure of injection mold

Abstract

The present invention provides an inclined ejection structure for an injection mold, comprising a movable template, a movable mold core mounted on the movable template, a push plate and a push rod, wherein the push plate is below the movable template, the push rod is tilted above the push plate and its bottom is rotatably connected to the push plate, the top of the push rod passes through the movable template and the movable mold core, a first molding insert and a second molding insert are mounted on the top of the push rod, the bottom of the first molding insert is fixedly connected to the push rod, the second molding insert is above the first molding insert, the second molding insert is fixedly connected to the push plate, and the first molding insert is movably connected with a plurality of ejector rods of the same structure, which can pass through the second molding insert and move up and down in a directional manner. The ejector rod in the first insert of the present invention is lifted upward along the trajectory of the second slide as the push rod moves, and the second insert and the molded product are ejected to ensure the integrity of the product demolding.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to a slanted top demoulding structure of an injection mold. Background Art

[0002] Injection molds are commonly used molds for molding plastic parts. Various forms of plastic parts can be molded through injection molds to meet people's various needs. Existing injection molding products, such as processing accessories Figure 7 The injection molded product shown in the figure has a hole (1001) on the side wall of the product (10), and a raised rib (1002) is provided above the inner side wall of the hole (1001). When the product is simply demoulded by sliding the hole (1001) on the side wall using a side core pulling method, the rib (1002) on the side wall cannot be ejected from the mold. Even if the ejection mechanism ejects the entire product from the mold, the rib is easily stuck on the molding core, resulting in the entire product being unable to be demoulded smoothly, and the product production quality is low. Summary of the Invention

[0003] The object of the present invention is to provide a slanted ejection structure for an injection mold to solve the technical problems in the background art.

[0004] To achieve the aforementioned objectives, the present invention provides the following technical solutions:

[0005] A slanted ejection structure for an injection mold comprises a movable template, a movable mold core mounted on the movable template, a push plate and a push rod, the push plate being below the movable template, the push rod being obliquely arranged above the push plate and having its bottom rotatably connected to the push plate, the top of the push rod passing through the movable template and the movable mold core, the top of the push rod being installed with a first molding insert and a second molding insert, the bottom of the first molding insert being fixedly connected to the push rod, the second molding insert being above the first molding insert, the second molding insert being fixedly connected to the push plate, a plurality of ejecting rods of the same structure being movably connected in the first molding insert, the ejecting rods being able to pass through the second molding insert and move up and down in a directional manner.

[0006] The right side of the first molding insert is provided with a plurality of raised first molding parts, and the top of the first molding insert is provided with a plurality of slide grooves with opening structures for placing the ejecting rods, the slide grooves include a first slide and a second slide provided in front of and / or behind the first slide, the second slide is communicated with the first slide, the ejecting rod includes a ejector rod and a guide rod installed in front of and / or behind the ejector rod, the ejector rod slides in the first slide, and the guide rod slides in the second slide.

[0007] The first slide is a straight long structure, and the second slide is gradually inclined upward toward the first forming part. The second slide is composed of a first slide part, a second slide part and a third slide part from the opening direction of the slide groove toward the first forming part. The second slide part is arranged in the horizontal direction, and the third slide part is inclined upward on the right side of the second slide part.

[0008] Several molding grooves are provided above the second molding insert, and several ejection holes are provided on the second molding insert corresponding to the position of the ejection rod. Fixed rods are respectively installed at the front and rear ends below the second molding insert, and the top end of the fixed rod is fixedly connected to the second molding insert, and the bottom end of the fixed rod is fixedly connected to the push plate, and the fixed rod and the push plate are arranged vertically.

[0009] The movable mold plate is provided with a mounting through hole for installing the push rod, and the movable mold core is provided with an inclined guide hole, the push rod passes through the inclined guide hole, and a fixed seat is installed at the bottom of the push rod to be connected to the push plate, the push rod is rotatably connected to the fixed seat, and the fixed seat is fixedly connected to the push plate.

[0010] Compared with the prior art, the present invention provides an inclined ejection structure for an injection mold. As the push rod moves obliquely upward to demold, the ejector pin in the first insert is lifted upward along the trajectory of the second slide as the push rod moves, thereby lifting and demolding the second insert and the molded product, ensuring that the rib position at the top of the product can be lifted while demolding from the side, thereby ensuring the integrity of the product demolding. The structural design is ingenious, the mold layout is compact, and the sliding motion of the push rod is utilized. While demolding from the side, ejection can also be performed in the other direction, thereby ensuring the stability of product production. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 : Schematic diagram of the structure of the present invention;

[0012] Figure 2 : Installation structure diagram of the first molding insert and the second molding insert;

[0013] Figure 3 : Schematic diagram of the first molding insert structure;

[0014] Figure 4 : Schematic diagram of the ejector rod structure;

[0015] Figure 5 : Schematic diagram of the second slide structure;

[0016] Figure 6 : Schematic diagram of the movement principle of the ejector rod;

[0017] Figure 7 : Schematic diagram of the structure of processed products of the present invention. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] Specific embodiment 1: Please refer to Figures 1 to 5 In an embodiment of the present invention, a slanted ejection structure of an injection mold includes a movable template 2, a movable mold core 3 installed on the movable template 2, a push plate 1 and a push rod 4, the push plate 1 is below the movable template 2, the push rod 4 is obliquely arranged above the push plate 1 and its bottom is rotatably connected to the push plate 1, the movable template 2 is provided with a mounting through hole 201 for installing the push rod 4, the movable mold core 3 is provided with an inclined guide hole 301, the push rod 4 passes through the inclined guide hole, the bottom of the push rod 4 is installed with a fixed seat 5 connected to the push plate 1, the push rod 4 is rotatably connected to the fixed seat 5, and the fixed seat 5 is fixedly connected to the push plate 1.

[0020] The top of the push rod 4 passes through the movable mold plate 2 and the movable mold core 3. The first molding insert 6 and the second molding insert 7 are installed on the top of the push rod 4. The bottom of the first molding insert 6 is fixedly connected to the push rod 4. The second molding insert 7 is above the first molding insert 6. The second molding insert 7 is fixedly connected to the push plate 1. Several ejecting rods 9 with the same structure are movably connected in the first molding insert 6. The ejecting rod 9 can pass through the second molding insert 7 and move up and down in a directional manner. In this embodiment, two ejecting rods 9 with the same structure are installed in the first molding insert 6, and the two ejecting rods 9 are arranged side by side front and back.

[0021] The right side of the first molding insert 6 is provided with several raised first molding parts 601 for molding the hole position 1001 of the product. The top of the first molding insert 6 is provided with two open structure slides 602 for placing the ejecting rod 9. The slide 602 includes a first slide 602-1 and a second slide 602-2 provided in front of and / or behind the first slide 602-1. In this embodiment, the front and rear sides of the first slide 602-1 are provided with second slides 602-2 with the same structure. The second slide 602-2 is communicated with the first slide 602-1. The ejecting rod 9 includes a ejector rod 901 and a guide rod 902 installed on the front and rear sides of the ejector rod 901. The ejector rod 901 slides in the first slide 602-1, and the guide rod 902 slides in the second slide 602-2. The structure of the second slide 602-2 is used to guide the ejector rod 901 to slide in the slide 602.

[0022] The first slide 602-1 is a straight and long structure, and the second slide 602-2 is gradually inclined upward toward the first forming part 601. The second slide 602-2 is composed of the first slide part 602-2-1, the second slide part 602-2-2 and the third slide part 602-2-3 from the opening direction of the slide groove 602 to the first forming part 601. The opening position at the left end of the first slide part 602-2-1 is a trumpet-shaped structure, which is convenient for the installation of the ejecting rod 9. The second slide part 602-2-2 is set in the horizontal direction, and the third slide part 602-2-3 is inclined upward on the right side of the second slide part 602-2-2.

[0023] Several molding grooves 701 are provided above the second molding insert 7, and the molding grooves 701 are used to mold the ribs 1002 on the product. Two ejection holes 702 are provided on the second molding insert 7, corresponding to the position of the ejection rod 9. Fixed rods 8 are respectively installed at the front and rear ends below the second molding insert 7. The top end of the fixed rod 8 is fixedly connected to the second molding insert 7, and the bottom end of the fixed rod 8 is fixedly connected to the push plate 1. The fixed rod 8 is vertically arranged to the push plate 1. Since the second molding insert 7 is a fixed structure, when the first molding insert 6 is displaced, the ejection rod 9 in the first molding insert 6 will slide directionally along the slide groove 602.

[0024] How it works: See Figure 6 When the push plate 1 is pushed upward, the push rod 4 moves along the inclined guide hole in the movable mold core toward the direction away from the first molding part 601 on the first molding insert 6. Since the second molding insert 7 is fixed, when the first molding insert 6 moves, the guide rod 902 and the ejector rod 901 on the ejector rod 9 slide in the corresponding slide. Since the second sliding part 602-2-2 in the second slide 602-2 is a straight line structure, that is, when the guide rod 902 is in the second sliding part 602- When sliding in 2-2, the ejector rod 901 has not moved upward to lift the product. As the first molding insert 6 continues to move, after the first molding part 601 and the product 10 hole 1001 are demolded, the guide rod 902 also slides to the third sliding part 602-2-3, and the ejector rod 901 moves upward along the direction of the third sliding part 602-2-3, that is, the ejector rod 901 moves upward to demold and lift the product and the second molding insert 7, completing the side-pulling demolding and upward-lifting demolding steps of the product.

[0025] Compared with the prior art, the present invention provides an inclined ejection structure for an injection mold. As the push rod moves obliquely upward to demold, the ejector pin in the first insert is lifted upward along the trajectory of the second slide as the push rod moves, thereby lifting and demolding the second insert and the molded product, ensuring that the rib position at the top of the product can be lifted while demolding from the side, thereby ensuring the integrity of the product demolding. The structural design is ingenious, the mold layout is compact, and the sliding motion of the push rod is utilized. While demolding from the side, ejection can also be performed in the other direction, thereby ensuring the stability of product production.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be embraced therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0027] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A sloping ejection structure for an injection mold, characterized in that: The mold core is fixed to the movable mold plate, and the push plate and the push rod are fixed to the movable mold plate. The push plate is below the movable mold plate, the push rod is tilted above the push plate and the bottom of the push rod is rotatably connected to the push plate, the top of the push rod passes through the movable mold plate and the movable mold core, the top of the push rod is installed with a first molding insert and a second molding insert, the bottom of the first molding insert is fixedly connected to the push rod, the second molding insert is above the first molding insert, the second molding insert is fixedly connected to the push plate, and a plurality of ejecting rods with the same structure are movably connected in the first molding insert, and the ejecting rod can pass through the second molding insert and move up and down in a directional manner; a plurality of raised first molding parts are provided on the right side of the first molding insert, and the first molding insert The top of the device is provided with several slide grooves with open structures for placing the ejecting rod, the slide groove includes a first slide and a second slide provided in front of and / or behind the first slide, the second slide is communicated with the first slide, the ejecting rod includes a ejecting rod and a guide rod installed in front of and / or behind the ejecting rod, the ejecting rod slides in the first slide, and the guide rod slides in the second slide; several molding grooves are provided above the second molding insert, and several ejecting holes are provided on the second molding insert corresponding to the position of the ejecting rod, and fixed rods are respectively installed at the front and rear ends below the second molding insert, the top end of the fixed rod is fixedly connected to the second molding insert, and the bottom end of the fixed rod is fixedly connected to the push plate, and the fixed rod is vertically arranged to the push plate.

2. The inclined ejection structure of an injection mold according to claim 1, characterized in that: The first slide is a straight long structure, and the second slide is gradually inclined upward toward the first forming part. The second slide is composed of a first slide part, a second slide part and a third slide part from the opening direction of the slide groove toward the first forming part. The second slide part is arranged in the horizontal direction, and the third slide part is inclined upward on the right side of the second slide part.

3. The inclined ejection structure of an injection mold according to claim 1, characterized in that: The movable mold plate is provided with a mounting through hole for installing the push rod, and the movable mold core is provided with an inclined guide hole, the push rod passes through the inclined guide hole, and a fixed seat is installed at the bottom of the push rod to be connected to the push plate, the push rod is rotatably connected to the fixed seat, and the fixed seat is fixedly connected to the push plate.

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