Spiral ejection device for demolding of pressure mold

Abstract

The utility model provides a spiral ejection device for demolding a pressure mold. The ejection block is installed in the jacking hole in the initial state, at the moment, the upper surface of the ejection block and the inner surface of the cavity are coplanar, and therefore the flatness of mold forming is guaranteed. And when the ejection block ascends and moves, the upper surface of the ejection block upwards protrudes out of the jacking hole. When a workpiece is formed in the cavity and needs to be demolded, the ejection block moves upwards to eject the workpiece out of the cavity, and therefore workpiece demolding is achieved. Furthermore, the ground of the ejection block is an inclined plane, and the inclined direction of the inclined plane is configured in a way that when the inclined plane is subjected to pressure in the direction of the demolding groove, the pressure is converted into thrust for the ejection block to move upwards. Therefore, a worker can operate the demolding connecting rod to move inwards along the demolding groove, the ejection block is driven to move upwards, and workpiece demolding is rapidly achieved. And the ejection block and the demolding connecting rod are matched with each other, so that the workpiece demolding can be quickly realized, and the demolding efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of mold manufacturing technology, and in particular to a spiral ejection device for demolding pressure molds. Background Technology

[0002] In modern manufacturing, pressure dies (such as stamping dies, injection molds, and die-casting molds) are widely used in metal forming, plastic product manufacturing, and the processing of complex parts. As a core component of the mold system, the demolding mechanism's performance directly affects production efficiency, product yield, and mold life. Most mold demolding devices are complex in structure, too costly, and have limitations. They rely on external air or hydraulic systems, making maintenance difficult. Therefore, for molds with general precision requirements, these complex demolding devices are unsuitable, resulting in low workpiece demolding efficiency and failing to meet the demands of high-efficiency production.

[0003] Therefore, there is an urgent need for a demolding device with a simple structure and fast ejection, which can convert horizontal driving force into vertical ejection force through mechanical linkage while ensuring the flatness of the cavity surface, thereby improving demolding efficiency and reducing operational complexity. Utility Model Content

[0004] In view of the above problems, this utility model is proposed to provide a spiral ejector device for demolding pressure molds that overcomes or at least partially solves the above problems, and can solve the problem of low demolding efficiency of existing molds, thereby improving the demolding efficiency of molds.

[0005] Specifically, this utility model provides a spiral ejection device for demolding a pressure mold, characterized in that it includes:

[0006] A mold having a cavity; a lifting hole at the bottom of the cavity; and a demolding groove communicating with the lifting hole and the side wall of the mold.

[0007] A demolding assembly includes an ejector block and a demolding linkage. The ejector block is slidably mounted in the lifting hole so that its upper surface is coplanar with the bottom of the cavity when it is located in the lifting hole. The ejector block has a ground slope. The demolding linkage is slidably mounted in the demolding groove along its length, with its outer end extending outward from the demolding groove and its inner end connected to the slope of the ejector block, so that when the demolding linkage moves inward, it drives the ejector block to move upward.

[0008] Optionally, the demolding assembly further includes a transmission wedge; the transmission wedge is slidably mounted in the demolding groove; the inclined surface of the transmission wedge abuts against the inclined surface of the ejector block; and the inner end of the demolding linkage is connected to the transmission wedge.

[0009] Optionally, the demolding link is a screw; the inner wall of the demolding groove is provided with an internal thread so that the demolding link is threadedly engaged with the demolding groove; the inner end of the demolding link is rotatably connected to the transmission wedge.

[0010] Optionally, a limiting groove is provided on the periphery of the ejector block; a limiting block that can be inserted into the limiting groove is fixedly provided on the inner wall of the lifting hole to prevent the ejector block from completely dislodging out of the lifting hole.

[0011] Optionally, the transmission wedge has a slot; a plane bearing is provided in the slot; the inner end of the demolding link is inserted into the slot and connected to the plane bearing.

[0012] Optionally, the outer end of the demolding link is provided with an internal hexagonal hole.

[0013] Optionally, the lifting hole includes an upper hole and a lower hole with a diameter smaller than the upper hole; the ejector block includes an upper top plate and an ejector wedge; the upper top plate is horizontally disposed in the upper hole; the ejector wedge is located in the lower hole and is fixedly connected to the upper top plate.

[0014] In this utility model, the spiral ejector device for demolding pressure molds includes a mold and a demolding assembly, with the demolding assembly comprising an ejector block and a demolding linkage. Initially, the ejector block is installed within the lifting hole, with its upper surface coplanar with the inner surface of the cavity, ensuring the flatness of the mold forming process. When the ejector block moves upward, its upper surface protrudes upward from the lifting hole. In other words, when a workpiece needs demolding after forming within the cavity, the upward movement of the ejector block pushes the workpiece outward from the cavity, thus achieving demolding. Furthermore, since the surface of the ejector block is an inclined plane, and the inclination direction of the inclined plane is configured such that when the inclined plane is subjected to pressure along the demolding groove direction, the pressure is converted into a thrust that moves the ejector block upward. Therefore, the inclined plane is connected to the demolding linkage, allowing the operator to move the demolding linkage inward along the demolding groove, driving the ejector block upward and quickly achieving workpiece demolding. In summary, the cooperation between the ejector block and the demolding linkage enables rapid demolding of the workpiece, thereby greatly increasing demolding efficiency.

[0015] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0016] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0017] Figure 1 This is a schematic structural diagram of a spiral ejection device for demolding a pressure mold according to an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0019] Figure 3 yes Figure 1 A magnified view of a section at point B.

[0020] In the diagram: 100, mold; 110, cavity; 120, lifting hole; 121, limiting block; 130, demolding groove; 140, mounting cover; 150, mounting port; 210, ejector block; 211, limiting groove; 212, upper ejector plate; 213, ejector wedge; 220, demolding linkage; 221, internal hexagonal hole; 230, transmission wedge; 231, surface bearing. Detailed Implementation

[0021] The following reference Figures 1 to 3 This invention describes a spiral ejector device for demolding a pressure mold according to an embodiment of the present invention. In this description, it should be understood that 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0022] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" 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 expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] Figure 1 This is a schematic structural diagram of the spiral ejection device for demolding pressure mold 100, as shown below. Figure 1 As shown, and with reference Figures 2 to 3 This utility model embodiment provides a spiral ejection device for demolding a pressure mold 100. The spiral ejection device for demolding a pressure mold 100 includes a mold 100 and a demolding assembly. The mold 100 has a cavity 110, and the bottom of the cavity 110 is provided with a lifting hole 120. The mold 100 is also provided with a demolding groove 130 that connects the lifting hole 120 with the side wall of the mold 100.

[0026] The demolding assembly includes an ejector block 210 and a demolding linkage 220. The ejector block 210 is slidably mounted in the lifting hole 120 so that when the ejector block 210 is located in the lifting hole 120, its upper surface is coplanar with the bottom of the cavity 110. The ejector block 210 has a sloping surface. The demolding linkage 220 is slidably mounted in the demolding groove 130 along its length, with its outer end extending outward from the demolding groove 130 and its inner end connected to the sloping surface of the ejector block 210, so that when the demolding linkage 220 moves inward, it drives the ejector block 210 to move upward.

[0027] Specifically, the cavity 110 is used to form the mold 100. The ejector block 210 is initially installed within the lifting hole 120, with its upper surface coplanar with the inner surface of the cavity 110, ensuring the flatness of the mold 100 during forming. When the ejector block 210 moves upward, its upper surface protrudes upward from the lifting hole 120. That is, when the workpiece needs to be demolded after forming within the cavity 110, the upward movement of the ejector block 210 pushes the workpiece outward from the cavity 110, thus achieving demolding. Furthermore, since the surface of the ejector block 210 is an inclined plane, and the direction of inclination of the inclined plane is configured such that when the inclined plane is subjected to pressure along the direction of the demolding groove 130, the pressure is converted into a thrust that moves the ejector block 210 upward. Therefore, the inclined plane is connected to the demolding linkage 220, allowing the operator to move the demolding linkage 220 inward along the demolding groove 130, which in turn moves the ejector block 210 upward, quickly demolding the workpiece. In summary, the cooperation between the ejector block 210 and the demolding linkage 220 enables rapid demolding of the workpiece, thus greatly increasing demolding efficiency.

[0028] During operation, when a workpiece needs to be demolded from the cavity 110 of the mold 100, the operator manipulates the demolding linkage 220, causing it to move inward along the demolding groove 130. This inward movement of the demolding linkage 220 applies an inward horizontal pressure to the inclined surface of the ejector block 210. Under the action of the inclined surface, the ejector block 210 experiences an upward force, causing it to move upward. This upward movement of the ejector block 210 applies an outward pushing force to the workpiece within the cavity 110, thus ejecting the workpiece from the cavity 110.

[0029] In this embodiment, the mold 100 is provided with an installation port 150, which is connected to the lifting hole 120 and the demolding groove 130, and an installation cover 140 is provided on the installation port 150.

[0030] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the demolding assembly also includes a transmission wedge 230. The transmission wedge 230 is slidably mounted in the demolding groove 130, and the inclined surface of the transmission wedge 230 abuts against the inclined surface of the ejector block 210. The inner end of the demolding linkage 220 is connected to the transmission wedge 230.

[0031] Specifically, the transmission wedge 230 has an inclined surface that engages with the inclined surface of the ejector block 210. The relative movement of the inclined surfaces of the transmission wedge 230 and the ejector block 210 enables the transmission wedge 230 to push the ejector block 210 upward. The arrangement of the two inclined surfaces engaging with each other improves transmission efficiency, thereby increasing the upward thrust and efficiency of the ejector block 210, and thus improving demolding efficiency.

[0032] In some embodiments of this utility model, such asFigure 1 and Figure 2 As shown, the demolding linkage 220 is a screw. The inner wall of the demolding groove 130 is provided with an internal thread, allowing the demolding linkage 220 to engage with the demolding groove 130. The inner end of the demolding linkage 220 is rotatably connected to the transmission wedge 230. Specifically, the demolding linkage 220 is threadedly connected to the demolding groove 130 so that when the demolding linkage 220 rotates, it can slide along the length of the demolding groove 130 through threaded transmission, thereby driving the transmission wedge 230 to move inward. The threaded connection between the demolding linkage 220 and the demolding groove 130 reduces operational difficulty and improves demolding efficiency.

[0033] In another embodiment, the demolding groove 130 is provided with an elastic element connected to the demolding linkage 220. When the demolding linkage 220 moves inward, the elastic element contracts and stores force.

[0034] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, a limiting groove 211 is provided on the periphery of the ejector block 210, and a limiting block 121 that can be inserted into the limiting groove 211 is fixedly provided on the inner wall of the lifting hole 120. Specifically, the width of the limiting groove 211 is the distance that the ejector block 210 moves upward, and the limiting groove 211 and the limiting block 121 are configured to cooperate with each other to prevent the ejector block 210 from completely dislodging out of the lifting hole 120.

[0035] In some embodiments of this utility model, such as Figure 2 As shown, the transmission wedge 230 has a slot, and a flat bearing 231 is installed inside the slot. The inner end of the demolding linkage 220 is inserted into the slot and connected to the flat bearing 231.

[0036] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the outer end of the demolding linkage 220 is provided with an internal hexagonal hole 221. Specifically, the provision of the internal hexagonal hole 221 on the demolding linkage 220 facilitates the operation of the linkage by construction personnel using an internal hexagonal wrench.

[0037] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the lifting hole 120 includes an upper hole and a lower hole with a diameter smaller than the upper hole, and the ejector block 210 includes an upper top plate 212 and an ejector wedge 213. The upper top plate 212 is horizontally disposed in the upper hole, and the ejector wedge 213 is located in the lower hole and is fixedly connected to the upper top plate 212.

[0038] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A spiral ejector device for demolding a pressure mold, characterized in that, include: A mold having a cavity; a lifting hole at the bottom of the cavity; and a demolding groove communicating with the lifting hole and the side wall of the mold. A demolding assembly includes an ejector block and a demolding linkage. The ejector block is slidably mounted in the lifting hole so that its upper surface is coplanar with the bottom of the cavity when it is located in the lifting hole. The ejector block has a ground slope. The demolding linkage is slidably mounted in the demolding groove along its length, with its outer end extending outward from the demolding groove and its inner end connected to the slope of the ejector block, so that when the demolding linkage moves inward, it drives the ejector block to move upward.

2. The spiral ejector device for demolding a pressure mold according to claim 1, characterized in that, The demolding assembly further includes a transmission wedge; the transmission wedge is slidably mounted in the demolding groove; the inclined surface of the transmission wedge abuts against the inclined surface of the ejector block; the inner end of the demolding linkage is connected to the transmission wedge.

3. The spiral ejector device for demolding a pressure mold according to claim 2, characterized in that, The demolding linkage is a screw; the inner wall of the demolding groove is provided with an internal thread so that the demolding linkage is threadedly engaged with the demolding groove; the inner end of the demolding linkage is rotatably connected to the transmission wedge.

4. The spiral ejector device for demolding a pressure mold according to claim 1, characterized in that, A limiting groove is provided around the periphery of the ejector block; a limiting block that can be inserted into the limiting groove is fixedly provided on the inner wall of the lifting hole to prevent the ejector block from completely dislodging out of the lifting hole.

5. The spiral ejector device for demolding a pressure mold according to claim 2, characterized in that, The transmission wedge has a slot; a plane bearing is installed in the slot; the inner end of the demolding rod is inserted into the slot and connected to the plane bearing.

6. The spiral ejector device for demolding a pressure mold according to claim 1, characterized in that, The outer end of the demolding link is provided with an internal hexagonal hole.

7. The spiral ejector device for demolding a pressure mold according to claim 1, characterized in that, The lifting hole includes an upper hole and a lower hole with a diameter smaller than the upper hole; the ejection block includes an upper top plate and an ejection wedge; the upper top plate is horizontally disposed in the upper hole; the ejection wedge is located in the lower hole and is fixedly connected to the upper top plate.

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