Push block assembly and mold

Abstract

The utility model provides a push block assembly and a mold, and relates to the technical field of molds. The push block assembly comprises at least one push block and at least one inclined ejection mechanism. A through hole penetrating through the two ends of the push block in the first direction is formed in the push block, and the two ends of the through hole extend to the first surface and the second surface of the push block correspondingly. At least a partial region of the first surface defines a partial cavity of the workpiece. The first guide column penetrates through the through hole and extends in the first direction. The angle ejector mechanism comprises an angle ejector, and at least part of the area of the angle ejector abuts against the second surface. In the mold opening process, the pitched roof is driven to move in the second direction, the pitched roof drives the push block to slide along the first guide column, relative displacement is generated between the pitched roof and the push block, and the second direction is inclined relative to the first direction. According to the push block assembly, the pitched roof and the push block can be ejected out together, the problem of jamming caused by asynchronism of the pitched roof and the push block is solved, the failure frequency of a mold is reduced, the production efficiency is improved, and the structure can be simplified easily.

Description

Technical Field

[0001] This application relates to the field of mold technology, and in particular to a pusher assembly and mold. Background Technology

[0002] A mold is a device that can obtain a desired workpiece through injection molding or other methods. The inclined ejector mechanism is a component in the mold that can be used to form the undercut of the workpiece. The inclined ejector mechanism works with the mold core to define the undercut cavity. During the demolding process, the inclined ejector mechanism pushes the undercut out of the mold.

[0003] In related technologies, forces need to be applied separately to the angled ejector and the push block to eject them together and demold the product. However, when forces are applied separately to the angled ejector and the push block, there is a jamming problem caused by the angled ejector and the push block being out of sync, which increases the difficulty of demolding and also results in a complex structure that is not conducive to installation and maintenance. Utility Model Content

[0004] In view of this, the present application provides a pusher assembly and a mold, which helps to simplify the structure and reduce the difficulty of demolding.

[0005] To achieve the above objectives, embodiments of this application provide a pusher assembly for a mold, comprising:

[0006] At least one pusher block, wherein a through hole is formed inside the pusher block at both ends along a first direction, and the two ends of the through hole extend to a first surface and a second surface of the pusher block, respectively, and at least a portion of the first surface defines a portion of the cavity of the workpiece.

[0007] A first guide post is inserted through the through hole and extends along the first direction;

[0008] At least one inclined ejector mechanism, the inclined ejector mechanism including an inclined ejector, at least a portion of the inclined ejector abutting against the second surface, during the mold opening process, by driving the inclined ejector to move along a second direction, the inclined ejector drives the push block to slide along the first guide post, the inclined ejector and the push block generate relative displacement, wherein the second direction is inclined relative to the first direction.

[0009] In one embodiment, the push block forms a limiting groove, and the inclined jack mechanism cooperates with the limiting groove to allow the inclined jack to slide relative to the push block along the limiting groove.

[0010] In one embodiment, the two ends of the limiting groove extend to the first surface and the second surface, respectively, and the limiting groove extends along a third direction. The inclined ejector mechanism includes a second guide post fixed to the inclined ejector. At least a portion of the second guide post extends into the limiting groove. During the mold opening process, the second guide post moves along the third direction, and the first direction is perpendicular to the third direction.

[0011] In one embodiment, the limiting groove is provided with a first stop surface on one side along the third direction. When the relative displacement between the inclined top and the push block is at its maximum, the first stop surface cooperates with the second guide post to stop.

[0012] In one embodiment, the limiting groove has a stepped surface facing the first surface, and the second guide post protrudes radially to form a step, the step overlapping the stepped surface and slidingly engaging with the stepped surface.

[0013] In one embodiment, the pusher assembly is annular, and a plurality of pushers are arranged circumferentially along the pusher assembly, wherein the third direction is the radial direction of the pusher assembly.

[0014] In one embodiment, the pusher block corresponds one-to-one with the inclined jacking mechanism.

[0015] In one embodiment, the inclined jack mechanism includes a push rod connected to the inclined jack, which drives the inclined jack to move along the second direction.

[0016] In one embodiment, the end of the inclined top near the first surface defines an undercut cavity for the workpiece with the push block.

[0017] This application provides a mold, which includes the pusher assembly described above.

[0018] This application provides an ejector assembly for a mold. The ejector is formed with through holes penetrating both ends along a first direction. A first guide post is inserted through the through holes, and at least a portion of the inclined ejector abuts against a second surface. Thus, during mold opening, by driving the inclined ejector to move along the second direction, the first guide post guides the ejector, causing it to slide along the first guide post. In other words, during mold opening, the inclined ejector and the ejector can move together along the first direction while simultaneously achieving relative displacement between them, thereby demolding the workpiece. Since only a force needs to be applied to the inclined ejector to eject both the inclined ejector and the ejector together, the problem of jamming caused by asynchronous movement between the inclined ejector and the ejector is solved, reducing demolding difficulty, decreasing the frequency of mold failures, improving production efficiency, and simplifying the structure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the push block assembly according to the first embodiment of this application, showing the inclined ejector mechanism and the push block in the mold closing state;

[0020] Figure 2 for Figure 1 A cross-sectional view along the AA direction;

[0021] Figure 3 for Figure 2 Enlarged view of point B in the middle;

[0022] Figure 4 This is a schematic diagram of the push block assembly according to the second embodiment of this application, showing the inclined ejector mechanism and the push block in the mold-opening state;

[0023] Figure 5 for Figure 4 A cross-sectional view along the CC direction.

[0024] Explanation of reference numerals in the attached figures

[0025] 10. Inclined ejector mechanism; 11. Inclined ejector; 12. Second guide post; 121. Step; 13. Push rod; 20. Push block; 21. First surface; 22. Second surface; 23. Through hole; 24. Limiting groove; 241. First stop surface; 242. Second stop surface; 243. Step surface; 30. First guide post; 100. Push block assembly; 110. Inverted cavity. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of this application, and are therefore only examples, and should not be used to limit the scope of protection of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0030] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0031] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0032] In the description of this application, the orientation or positional relationship of "first direction" is based on the orientation or positional relationship shown in the accompanying drawings. It should be understood that these orientation terms are only for the convenience of describing this application 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 application.

[0033] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0034] The angled ejector mechanism is a component in a mold used to form the undercut of a workpiece. It works in conjunction with the mold core to define the undercut cavity. In related technologies, forces are applied to the angled ejector and ejector block separately using an ejector rod and a push rod to eject them together, thus demolding the product. However, applying forces to the angled ejector and ejector block separately can cause jamming due to asynchronous action, increasing the difficulty of demolding and resulting in a complex structure that is difficult to install and maintain.

[0035] One aspect of this application provides a mold, which includes a pusher assembly 100 according to any embodiment of this application.

[0036] For example, the mold includes a moving mold and a fixed mold. The moving mold includes an ejector assembly 100.

[0037] For example, when the mold is in the closed state, a cavity is defined between the fixed mold and the moving mold. The workpiece is formed in the cavity by injection molding or other means. After the workpiece is formed, the mold switches from the closed state to the open state. The inclined ejector mechanism 10 of the ejector assembly 100 can eject at least a part of the workpiece from the cavity. The workpiece can be separated from the cavity wall, and at least a part of the workpiece can also be exposed from the cavity, thereby facilitating the removal of the workpiece.

[0038] For example, the mold may include a robotic arm for removing the workpiece, which helps to improve automation.

[0039] Please see Figures 1 to 5 In another aspect, this application provides a push block assembly 100, which includes at least one push block 20 and at least one inclined ejector mechanism 10. The push block 20 has a through hole 23 extending through both ends of the push block 20 along a first direction, with both ends of the through hole 23 extending to a first surface 21 and a second surface 22 of the push block 20, respectively. At least a portion of the first surface 21 defines a portion of the workpiece cavity. A first guide post 30 passes through the through hole 23 and extends along the first direction. The inclined ejector mechanism 10 includes an inclined ejector 11, at least a portion of which abuts against the second surface 22. During mold opening, by driving the inclined ejector 11 to move along a second direction, the inclined ejector 11 causes the push block 20 to slide along the first guide post 30, resulting in a relative displacement between the inclined ejector 11 and the push block 20, wherein the second direction is inclined relative to the first direction.

[0040] The mold opening direction is the direction of movement of the moving mold during the process of switching the mold from the closed state to the open state. For example, the mold opening direction is the first direction.

[0041] The number of inclined jacking mechanisms 10 can be one or more. The number of push blocks 20 can be one or more.

[0042] For example, the inclined jack mechanism 10 corresponds one-to-one with the push block 20.

[0043] In the embodiments of this application, "multiple" refers to two or more items.

[0044] Please see Figures 2 to 3 The push block 20 has through holes 23 extending through both ends of the push block 20 in the first direction. The first guide post 30 passes through the through holes 23 so that the push block 20 can move along the extension direction of the first guide post 30. Since the first guide post 30 extends along the first direction, the push block 20 can move along the first direction by cooperating with the first guide post 30.

[0045] For example, the first guide post 30 is fixed on the moving mold, and the push block 20 moves relative to the moving mold in a first direction by cooperating with the first guide post 30.

[0046] Please see Figure 2 At least a portion of the inclined top 11 abuts against the second surface 22. Thus, by driving the inclined top 11, the inclined top 11 can move together with the push block 20, thus solving the jamming problem caused by the asynchronous movement of the inclined top 11 and the push block 20.

[0047] For example, please refer to Figure 2 The end of the inclined top 11 near the first surface 21 and the push block 20 define the inverted cavity 110 of the workpiece.

[0048] The inclined ejector mechanism 10 and the push block 20 work together to define the undercut cavity 110, and the inclined ejector mechanism 10 can push the undercut out of the mold during demolding.

[0049] The end of the angled ejector 11 near the first surface 21 and the ejector block 20 define an undercut cavity 110 for the workpiece. During mold opening, the angled ejector 11 and the ejector block 20 can be driven to move together along the first direction, while the angled ejector 11 and the ejector block 20 can also generate relative displacement, thereby achieving undercut demolding of the workpiece. In other words, during the process of driving the angled ejector 11 to move, the drive can drive the ejector block 20 to move together, thereby providing driving force for the ejector block 20 to demold, solving the jamming problem caused by the asynchronous movement of the angled ejector 11 and the ejector block 20.

[0050] For example, the second direction intersects the first direction but is not perpendicular to it, so that the inclined jack 11 can apply a component force in the first direction to the push block 20 during the movement along the second direction.

[0051] For example, please refer to Figure 2 The first direction is represented by X, the second direction by Y, and the third direction by Z.

[0052] This application provides an ejector assembly 100 for a mold. The ejector 20 has through holes 23 extending through both ends of the ejector 20 along a first direction. A first guide post 30 is inserted through the through holes 23, and at least a portion of the inclined ejector 11 abuts against the second surface 22. Thus, during mold opening, by driving the inclined ejector 11 to move along the second direction, the first guide post 30 guides the ejector 20, causing the ejector 11 to slide along the first guide post 30. In other words, during mold opening, the inclined ejector 11 and the ejector 20 can move together along the first direction while simultaneously achieving relative displacement between them, thereby demolding the workpiece. Since only a force needs to be applied to the inclined ejector 11 to eject the inclined ejector 11 and the ejector 20 together, the problem of jamming caused by the asynchronous movement of the inclined ejector 11 and the ejector 20 is solved, reducing the difficulty of demolding, decreasing the frequency of mold failures, improving production efficiency, and simplifying the structure.

[0053] In some embodiments, please refer to Figures 1 to 3 The push block 20 forms a limiting groove 24, and the inclined top mechanism 10 cooperates with the limiting groove 24 to make the inclined top 11 slide relative to the push block 20 along the limiting groove 24.

[0054] For example, the inclined jacking mechanism 10 is provided with a limiting structure, which extends into the limiting groove 24 and slides in cooperation with the limiting groove 24. In this way, the movement of the inclined jacking mechanism 10 can be guided and limited.

[0055] This helps to improve the motion stability of the inclined jacking mechanism 10, thereby improving the reliability between the inclined jacking mechanism 10 and the push block 20.

[0056] There are various structural forms of the limiting groove 24.

[0057] In some embodiments, please refer to Figures 1 to 2 The two ends of the limiting groove 24 extend to the first surface 21 and the second surface 22 respectively. The limiting groove 24 extends along the third direction. The inclined ejector mechanism 10 includes a second guide post 12 fixed to the inclined ejector 11. At least a portion of the second guide post 12 extends into the limiting groove 24. During the mold opening process, the second guide post 12 moves along the third direction. The first direction is perpendicular to the third direction.

[0058] In other words, the limiting structure is set as the second guide post 12 fixed to the inclined top 11.

[0059] The two ends of the limiting groove 24 extend to the first surface 21 and the second surface 22 respectively, that is, the limiting groove 24 is a through groove.

[0060] The inclined jacking mechanism 10 limits the movement of the inclined jack 11 by providing a second guide post 12, which slides with a limiting groove 24. Exemplarily, the inclined jack 11 moves relative to the push block 20 in a third direction by extending the limiting groove 24 in a third direction.

[0061] In other embodiments, the limiting groove 24 is a blind groove that penetrates the second surface 22.

[0062] In some embodiments, please refer to Figures 1 to 3 The limiting groove 24 is provided with a first stop surface 241 on one side along the third direction. When the relative displacement between the inclined top 11 and the push block 20 is at its maximum, the first stop surface 241 and the second guide post 12 stop and cooperate.

[0063] This helps prevent the second guide post 12 from coming out of the limiting groove 24, thus improving the reliability of the pusher assembly 100.

[0064] Here, the maximum distance that the inclined top 11 moves along the second direction is when the relative displacement between the inclined top 11 and the push block 20 is at its maximum.

[0065] During the mold opening process, the inclined ejector 11 moves along the second direction. When the first stop surface 241 and the second guide post 12 stop, the mold opening is completed. At the same time, it can also prevent the second guide post 12 from coming out of the limiting groove 24.

[0066] In some embodiments, please refer to Figures 4 to 5 The limiting groove 24 is provided with a second stop surface 242 on the other side along the third direction, which is opposite to the first stop surface 241. When the moving mold and the fixed mold are closed in place, the second stop surface 242 and the second guide post 12 stop and cooperate.

[0067] In some embodiments, please refer to Figures 1 to 3 The limiting groove 24 has a stepped surface 243 facing the first surface 21, and the second guide post 12 protrudes radially to form a step 121. The step 121 overlaps the step surface 243 and slides with the step surface 243.

[0068] In other words, the limiting groove 24 is roughly T-shaped. Correspondingly, the second guide post 12 is roughly T-shaped.

[0069] The limiting groove 24 is provided with a stepped surface 243, and the second guide post 12 is provided with a step 121 so that the step 121 overlaps with the step surface 243, thereby limiting the inclined top mechanism 10 and the push block 20 in the first direction, and can slide with the step 121 and the step surface 243.

[0070] In some embodiments, please refer to Figure 2 and Figure 5The inclined jacking mechanism 10 includes a jacking rod 13, which is connected to the inclined jacking 11. The jacking rod 13 drives the inclined jacking 11 to move along the second direction.

[0071] By setting an ejector rod 13 and connecting it to the inclined ejector 11, when the injection molding is completed and the mold is opened, the inclined ejector 11 is pushed upward by the force of the ejector rod 13. At the same time, the pusher block 20 is driven upward by the thrust at the bottom of the inclined ejector 11 under the guidance of the first guide post 30 and the second guide post 12. The robot arm picks up the part, and after the inclined ejector mechanism 10 and the pusher block 20 are reset, the mold is closed again for the next round of injection molding.

[0072] In some embodiments, please refer to Figures 1 to 5 The pusher assembly 100 is annular, and multiple pushers 20 are arranged circumferentially along the pusher assembly 100, with the third direction being the radial direction of the pusher assembly 100.

[0073] For example, there are four push blocks 20 and four inclined top mechanisms 10, with the four push blocks 20 evenly arranged along the circumference of the push block assembly 100.

[0074] Setting up multiple push blocks 20 and multiple inclined push mechanisms 10 can help improve production efficiency.

[0075] By setting the push block assembly 100 as an annular shape and setting the third direction as the radial direction of the push block assembly 100, the structural compactness of the mold can be improved, and the inclined ejector 11 can be moved outward along the radial direction of the push block assembly 100, thus avoiding interference with other parts of the mold.

[0076] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in other embodiments," "in yet another embodiment," or "exemplary," 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 the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0077] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A pusher assembly for a mold, characterized in that, include: At least one pusher block, wherein a through hole is formed inside the pusher block at both ends along a first direction, and the two ends of the through hole extend to a first surface and a second surface of the pusher block, respectively, and at least a portion of the first surface defines a portion of the cavity of the workpiece. A first guide post is inserted through the through hole and extends along the first direction; At least one inclined ejector mechanism, the inclined ejector mechanism including an inclined ejector, at least a portion of the inclined ejector abutting against the second surface, during the mold opening process, by driving the inclined ejector to move along a second direction, the inclined ejector drives the push block to slide along the first guide post, the inclined ejector and the push block generate relative displacement, wherein the second direction is inclined relative to the first direction.

2. The pusher assembly according to claim 1, characterized in that, The push block forms a limiting groove, and the inclined top mechanism cooperates with the limiting groove to allow the inclined top to slide relative to the push block along the limiting groove.

3. The pusher assembly according to claim 2, characterized in that, The two ends of the limiting groove extend to the first surface and the second surface, respectively. The limiting groove extends along a third direction. The inclined ejector mechanism includes a second guide post fixed to the inclined ejector. At least a portion of the second guide post extends into the limiting groove. During the mold opening process, the second guide post moves along the third direction. The first direction is perpendicular to the third direction.

4. The pusher assembly according to claim 3, characterized in that, The limiting groove is provided with a first stop surface on one side along the third direction. When the relative displacement between the inclined top and the push block is at its maximum, the first stop surface cooperates with the second guide post to stop.

5. The pusher assembly according to claim 4, characterized in that, The limiting groove has a stepped surface facing the first surface, and the second guide post protrudes radially to form a step, which overlaps with the stepped surface and slides in cooperation with the stepped surface.

6. The pusher assembly according to claim 3, characterized in that, The pusher assembly is ring-shaped, and a plurality of pushers are arranged along the circumference of the pusher assembly, with the third direction being the radial direction of the pusher assembly.

7. The pusher assembly according to claim 1, characterized in that, Each pusher corresponds to one of the inclined top mechanisms.

8. The pusher assembly according to claim 1, characterized in that, The inclined jacking mechanism includes a jacking rod connected to the inclined jack, which drives the inclined jack to move along the second direction.

9. The pusher assembly according to claim 1, characterized in that, The end of the inclined top near the first surface and the push block define an undercut cavity for the workpiece.

10. A mold, characterized in that, The mold includes the pusher assembly as described in any one of claims 1 to 9.

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