A sliding demolding mechanism and injection mold

Abstract

This utility model discloses a sliding demolding mechanism and an injection mold, including a slider and a sliding core disposed on the slider. The sliding core and the slider are movably connected in a first direction by a limiting member. The bottom surface of the sliding core separates from or abuts against the mating surface of the slider. The slider is provided with several driving components, which are disposed around the limiting member and below the sliding core. When the mold is closed, the bottom surface of the sliding core abuts against the mating surface of the slider. When the mold is opened, the driving components push the bottom surface of the sliding core away from the mating surface of the slider. The driving components include a push rod and an elastic element. The elastic element is disposed in the receiving cavity of the sliding core, and the push rod is located above the elastic element. One end of the push rod abuts against the elastic element, and the other end abuts against the sliding core. The elastic element is arranged parallel to the limiting member. This utility model can avoid wear between the sliding core and the support block during the movement of the sliding core, thus extending the service life of the sliding core.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a sliding demolding mechanism and an injection mold. Background Technology

[0002] Sliding demolding in injection molds is a demolding method achieved through a slider or similar structure, using a sliding mechanism to separate the molded plastic part from the mold. The slider and the inclined guide post are key components for achieving sliding demolding. The slider is typically mounted on the moving mold, while the inclined guide post is fixed to the fixed mold. When the mold opens, the inclined guide post pushes the slider to move in a specific direction, thus achieving demolding. However, sometimes a sliding core needs to be incorporated into the slider as part of the molding cavity to shape the edge of the product. During demolding, the sliding core moves synchronously with the slider. Because the sliding core is supported by a support block, friction occurs between the sliding core and the support block, leading to wear of the sliding core and affecting accuracy. Utility Model Content

[0003] The purpose of this invention is to solve the technical problem of easy wear during demolding of existing sliding cores.

[0004] To achieve the objectives of this utility model, the following technical solution is adopted: A sliding demolding mechanism includes a slider and a sliding core disposed on the slider. The sliding core and the slider are movably connected in a first direction by a limiting member. The bottom surface of the sliding core is separated from or abuts against the mating surface of the slider. The slider is provided with a plurality of driving components, which are disposed around the limiting member and below the sliding core. When the mold is closed, the bottom surface of the sliding core abuts against the mating surface of the slider. When the mold is opened, the driving components push the bottom surface of the sliding core to separate from the mating surface of the slider. The driving components include a push rod and an elastic element. The elastic element is disposed in the receiving cavity of the sliding core. The push rod is located above the elastic element. One end of the push rod abuts against the elastic element, and the other end abuts against the sliding core. The elastic element is arranged parallel to the limiting member.

[0005] In some embodiments, the opening of the receiving cavity is located at the bottom of the slide core, and a cover plate is provided at the opening, with the elastic element located between the cover plate and the top rod.

[0006] In some embodiments, the mating surface is provided with a groove, the groove is provided along a second direction, and the bottom surface of the slide core is provided with a protrusion that mates with the groove.

[0007] In some embodiments, the slider has a limiting surface, and the side of the slider core abuts against the limiting surface.

[0008] In some embodiments, the limiting member is inserted into the limiting hole. The limiting member has an end head, a sliding part and a threaded part. The sliding part is located between the threaded part and the end head. The threaded part is locked into the slider. The diameter of the end head is larger than that of the sliding part.

[0009] In some embodiments, the limiting hole has a wide diameter portion for receiving the end head, the depth of which is greater than the height of the end head.

[0010] In some embodiments, the side of the slide core is provided with a forming groove.

[0011] In some embodiments, a positioning element is provided on the outer side of the slider to limit the sliding range of the slider.

[0012] An injection mold includes an upper mold and a lower mold, and a sliding demolding mechanism is provided between the upper mold and the lower mold.

[0013] The connecting device provided by this utility model has the following advantages: This invention employs a drive assembly to lift the slide core during mold opening, thereby separating the slide core from the support block. This prevents wear between the slide core and the support block during horizontal movement of the slider, extending the service life of the slide core. Furthermore, a limiting component restricts the vertical movement of the slide core, resulting in a simple structure and convenient use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a sliding demolding mechanism provided in an embodiment of this utility model.

[0016] Figure 2 This is a partial schematic diagram of a sliding demolding mechanism provided in an embodiment of this utility model.

[0017] Figure 3 This is a schematic diagram of the sliding core moving according to an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of an injection mold provided in an embodiment of the present utility model.

[0019] In the attached diagram: 1. Sliding demolding mechanism; 2. Sliding core; 3. Limiting element; 31. End head; 32. Sliding part; 33. Threaded part; 4. Drive assembly; 5. Support block; 41. Push rod; 42. Elastic element; 43. Cover plate; 5. Support block; 6. Inclined guide post; 7. Limiting hole; 8. Positioning element; 21. Bottom surface; 71. Wide diameter part; 100. Sliding demolding mechanism; 111. Groove; 200. Upper mold; 211. Protrusion; 300. Lower mold; 400. Molding cavity. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0021] In this embodiment, "several" and "more than" refer to two or more. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] <Example 1> like Figures 1 to 4As shown, this embodiment provides a sliding demolding mechanism 100, including a slider 1 and a sliding core 2 disposed on the slider 1. The sliding core 2 and the slider 1 are movably connected along a first direction Z by a limiting member 3. The bottom surface 21 of the sliding core 2 separates from or abuts against the mating surface 11 of the slider 1. The slider 1 is provided with a plurality of driving components 4, which are disposed around the limiting member 3 and below the sliding core 2. When the mold is closed, the bottom surface 21 of the sliding core 2 abuts against the mating surface 11 of the slider 1. When the mold is opened, the driving components 4 push the bottom surface 21 of the sliding core 2 to separate from the mating surface 11 of the slider 1. Thus, when the sliding core 2 moves in a third direction X, the sliding core 2 drives the slider 1 to move synchronously. The slider 1 is driven to rise by the driving components, causing it to disengage from the support block 5. Therefore, no friction occurs with the support block 5 during demolding, avoiding wear on the slider 1. The driving assembly 4 includes a push rod 41 and an elastic element 42. The elastic element 42 is disposed in the receiving cavity 22 of the slide core 2. The push rod 41 is located above the elastic element 42, with one end of the push rod 41 pressing against the elastic element 42 and the other end pressing against the slide core 2. The elastic element 42 is arranged parallel to the limiting element 3. When pressure is applied to the upper part of the slide core 2, the push rod 41 is compressed, and the elastic element 42 is compressed. When there is no pressure on the upper part of the slide core 2, the elastic force of the elastic element 42 is released, pushing the push rod 41 to rise, thereby lifting the slide core 2. In this embodiment, the elastic element 42 is a spring, and the push rod 41 is arranged along the first direction Z. Through the above technical solution, when the mold is opened, the slider 1 moves outward under the drive of the inclined guide post 6, and the slide core 2 can be lifted and detached from the support block 5 while moving with the slider 1, avoiding friction with the support block 5 and extending the service life of the slide core 2.

[0024] Furthermore, the opening 221 of the receiving cavity 22 is located at the bottom of the slide core 2, and a cover plate 43 is provided at the opening 221. The elastic element 42 is located between the cover plate 43 and the push rod 41. The cover plate 43 can open or close the opening 221 to facilitate the installation of the drive assembly. The mating surface 11 is provided with a groove 111, which is arranged along the second direction Y. The bottom surface 21 of the slide core 2 is provided with a protrusion 211 that mates with the groove 111. When the mold is closed, the slide core 2 descends, and the protrusion 211 is engaged in the groove 111 to prevent the slide core 2 from moving laterally. The slider 1 has a limiting surface 12, and the side surface 23 of the slide core 2 abuts against the limiting surface 12, so that the slide core 2 can slide more smoothly up and down.

[0025] Furthermore, the limiting member 3 passes through the limiting hole 7, which in turn passes through the sliding core 2. The limiting member 3 has an end head 31, a sliding portion 32, and a threaded portion 33. The sliding portion 32 is located between the threaded portion 33 and the end head 31. The sliding portion 32 is a smooth cylindrical shape, allowing the limiting member 3 to slide relative to the limiting hole 7. The threaded portion 33 is locked into the slider 1. The diameter of the end head 31 is larger than that of the sliding portion 32, thereby limiting the sliding core. In this embodiment, the limiting member 3 is a bolt. The limiting hole 7 has a wide diameter portion 71 that accommodates the end head 31. The depth of the wide diameter portion 71 is greater than the height of the end head 31, so that when the sliding core 2 slides down, the end head 31 can also be accommodated in the limiting hole 7. The side of the sliding core 2 is provided with a forming groove 24, which cooperates with the forming cavity of the mold for forming the product. The outer side of the slider 1 is provided with a positioning member 8, which is used to limit the sliding range of the slider 1. When the slider 1 moves outward to abut against the positioning member 8, the slider 1 is blocked.

[0026] <Example 2> In this embodiment, the parts that are the same as in Embodiment 1 are given the same reference numerals, and the same text descriptions are omitted.

[0027] like Figure 4 As shown, compared to Embodiment 1, this embodiment provides an injection mold including an upper mold 200 and a lower mold 300. A sliding demolding mechanism 100, as described in Embodiment 1, is provided between the upper mold 200 and the lower mold 300. The two sliding demolding mechanisms 100 are symmetrically arranged on both sides of the molding cavity 400. One end of the inclined guide post 6 is connected to the upper mold 200, and the other end passes through the inclined hole 13 of the slider 1. Thus, when the mold is opened or closed, the upper mold 200 can drive the slider 1 to slide via the inclined guide post 6. When the mold is closed, the upper mold 200 presses against the sliding core 2, and the sliding core 2 is close to the molding cavity 400 and located on the support block 5. When the mold is opened, the upper mold 200 moves upward, the slider 1 slides outward away from the molding cavity 400, and the sliding core 2 disengages from the upper surface of the support block 5 via the drive assembly 4.

[0028] In this embodiment, a drive component is used to lift the slide core when the mold is opened, thereby separating the slide core from the support block. When the slider moves horizontally, wear between the slide core and the support block is avoided, and the service life of the slide core is extended. In addition, the vertical movement of the slide core is limited by a limiting component. The structure is simple and easy to use.

[0029] In the above embodiments one to two, during the working process, depending on the different working environments, some of the technical implementation methods of embodiments one to five can be combined or replaced.

[0030] The technical principles of this utility model have been described above in conjunction with specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, other specific embodiments or equivalent substitutions of this utility model that can be conceived by those skilled in the art without creative effort will all fall within the scope of protection of this utility model.

Claims

1. A slide demolding mechanism characterized by, The device includes a slider and a slide core disposed on the slider. The slide core and the slider are movably connected in a first direction by a limiting member. The bottom surface of the slide core is separated from or abuts against the mating surface of the slider. The slider is provided with several driving components, which are disposed around the limiting member and below the slide core. When the mold is closed, the bottom surface of the slide core abuts against the mating surface of the slider. When the mold is opened, the driving components push the bottom surface of the slide core to separate from the mating surface of the slider. The driving components include a push rod and an elastic element. The elastic element is disposed in the receiving cavity of the slide core. The push rod is located above the elastic element. One end of the push rod abuts against the elastic element, and the other end abuts against the slide core. The elastic element is arranged parallel to the limiting member.

2. The slide demolding mechanism according to claim 1, characterized by The opening of the receiving cavity is located at the bottom of the sliding core, and a cover plate is provided at the opening. The elastic element is located between the cover plate and the top rod.

3. The slide demolding mechanism according to claim 1, wherein The mating surface is provided with a groove, which is arranged along the second direction, and the bottom surface of the slide core is provided with a protrusion that mates with the groove.

4. The slide demolding mechanism according to claim 1, wherein The slider has a limiting surface, and the side of the slider core abuts against the limiting surface.

5. The slide demolding mechanism according to claim 1, wherein The limiting member is inserted into the limiting hole. The limiting member has an end head, a sliding part and a threaded part. The sliding part is located between the threaded part and the end head. The threaded part is locked into the slider. The diameter of the end head is larger than that of the sliding part.

6. The slide demolding mechanism according to claim 5, wherein The limiting hole has a wide diameter portion that accommodates the end head, and the depth of the wide diameter portion is greater than the height of the end head.

7. The slide demolding mechanism according to claim 1, wherein The side of the sliding core is provided with a forming groove.

8. The slide demolding mechanism according to claim 1, wherein The slider is provided with a positioning element on its outer side to limit the slider's sliding range.

9. An injection mold comprising an upper mold and a lower mold, characterized in that A sliding demolding mechanism as described in any one of claims 1 to 8 is provided between the upper mold and the lower mold.

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