Mould structure capable of being quickly demoulded

Abstract

The utility model relates to the technical field of moulds, in particular to a mould structure capable of demoulding quickly, which comprises a base, a backing plate arranged on the base, a rear mould seat arranged on the backing plate and a rear mould core arranged on the rear mould seat, a mould core is connected onto the backing plate, and the mould core penetrates through the rear mould seat and the rear mould core and extends to the upper side of the rear mould core. A first containing cavity is formed in the mold core, and an inward shrinkage assembly is arranged in the first containing cavity. The inward shrinkage assembly comprises a guide rod arranged in the first containing cavity and an inward shrinkage insert connected with the guide rod, the inward shrinkage insert is movably connected with the mold core, the guide rod is provided with a guide groove, and the inward shrinkage insert is movably connected to the guide groove. According to the utility model, the internal shrinkage component is matched with the rear mold base and the rear mold core to replace a traditional inclined ejection structure, so that not only is quick demolding realized, but also inclined ejection marks are prevented from being left on the surface of a product, the design requirement of a transparent or semitransparent product is met, and the product quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold structure with rapid demoulding. Background Art

[0002] Injection molding is a manufacturing technology widely used in industrial production. It injects molten thermoplastics or thermosetting materials into a precisely designed mold, and forms plastic products of various shapes and sizes after cooling and solidification. This process usually relies on an injection molding machine that can provide the pressure and temperature control required for injection molding. In the injection molding process of some products, it is necessary to adapt the injection mold to the specific structure of the product. Some products have bone positions and inner buckle positions on the inner wall. When designing molds for such products, the traditional method is to use a sloping top structure to facilitate subsequent demolding, such as attaching Figure 5 The product shown has a bone position at the bottom, and the two opposite side walls have buckle positions, and the product itself is transparent or translucent. Although the inclined top structure is used during injection molding for this type of product, it is convenient to demold it, but it is easy to produce an inclined top mark on the ejection surface. The inclined top mark will be very obvious when viewed from the outside when it is transparent or translucent, which will affect the aesthetics of the product and fail to meet the design requirements of the product. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a mold structure with rapid demoulding.

[0004] The utility model is implemented by the following scheme:

[0005] A quick demolding mold structure includes a base, a pad arranged on the base, a rear mold base arranged on the pad, a rear mold core arranged on the rear mold base, a mold core connected to the pad, the mold core passes through the rear mold base and the rear mold core and extends to above the rear mold core, the mold core has a first accommodating cavity inside, and a retracting component is arranged in the first accommodating cavity; the retracting component includes a guide rod arranged in the first accommodating cavity, a retracting insert connected to the guide rod, the retracting insert is movably connected to the mold core, the guide rod is provided with a guide groove, the retracting insert is movably connected to the guide groove, the guide groove is inclined relative to the central axis of the guide rod, the guide groove gradually approaches the central axis of the guide rod from the starting end to the end, and when the guide rod approaches or moves away from the mold core, the retracting insert moves relative to the mold core.

[0006] Furthermore, the mold core is provided with a connecting hole, which passes through the surface of the mold core to the first accommodating cavity, and the inward-retracted insert is movably connected to the connecting hole.

[0007] Furthermore, an inward buckling forming portion is provided at the end of the inwardly contracted insert.

[0008] Furthermore, the guide groove is T-shaped, and the end of the inwardly retracted insert is provided with a guide portion matching the guide groove.

[0009] Furthermore, the guide rod is provided with an inclined surface at a position corresponding to the guide groove.

[0010] Furthermore, a first connecting seat is provided at the bottom of the guide rod, and a second accommodating cavity matching the first connecting seat is provided at the mold core.

[0011] Furthermore, a second connecting seat is provided on the base, and the second connecting seat is connected to the guide rod.

[0012] Furthermore, the mold core includes a fixing portion, a forming portion arranged on the fixing portion, the top surface of the fixing portion is connected to the bottom surface of the rear mold core, the bottom surface of the fixing portion is connected to the pad, and the forming portion passes through the rear mold core and extends above the rear mold core.

[0013] Furthermore, two inwardly-retracted inserts are provided, and two corresponding guide grooves are provided.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In the utility model, a retracting component is provided inside the mold core, and the retracting component includes a guide rod and a retracting insert. During the demoulding process, when the mold core is away from the guide rod, the retracting insert is separated from the product, thereby facilitating the rear mold core to push the product to separate from the mold core, thereby realizing rapid demoulding. The retracting component is used in conjunction with the rear mold base and the rear mold core to replace the traditional inclined top structure, thereby avoiding leaving an inclined top mark on the product surface, meeting the design requirements of transparent or translucent products, and ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a quick demoulding mold structure provided by the utility model.

[0017] Figure 2 It is a cross-sectional schematic diagram of the present utility model.

[0018] Figure 3 This is a schematic diagram of the mold core of the present utility model.

[0019] Figure 4 This is a schematic diagram of the retracted component of the utility model.

[0020] Figure 5 This is a schematic diagram of the product processed by the present utility model.

[0021] Included in the figure are:

[0022] Base 1, second connecting seat 11, pad 2, rear mold seat 3, rear mold core 4, mold core 5, first accommodating cavity 51, connecting hole 52, fixing part 53, forming part 54, second accommodating cavity 55, retracting component 6, guide rod 61, retracting insert 62, guide groove 63, inward buckle forming part 64, guide part 65, inclined surface 66, first connecting seat 67, product 7. DETAILED DESCRIPTION

[0023] In order to facilitate those skilled in the art to understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and drawings.

[0024] Reference Figures 1 to 4 The utility model provides a quick demolding mold structure, including a base 1, a pad 2 arranged on the base 1, a rear mold base 3 arranged on the pad 2, and a rear mold core 4 arranged on the rear mold base 3. A mold core 5 is connected to the pad 2, and the mold core 5 extends through the rear mold base 3 and the rear mold core 4 to above the rear mold core 4. The mold core 5 has a first accommodating cavity 51 inside, and the first accommodating cavity 51 is provided with an inward-retracting component 6.

[0025] The retracting component 6 includes a guide rod 61 arranged in the first accommodating cavity 51, a retracting insert 62 connected to the guide rod 61, the retracting insert 62 is movably connected to the mold core 5, the guide rod 61 is provided with a guide groove 63, the retracting insert 62 is movably connected to the guide groove 63, the guide groove 63 is inclined relative to the central axis of the guide rod 61, the guide groove 63 gradually approaches the central axis of the guide rod 61 from the starting end to the end, when the retracting insert 62 moves from the starting end to the end of the guide groove 63, the retracting insert 62 gradually approaches the central axis of the guide rod 61, when the guide rod 61 approaches or moves away from the mold core 5, the retracting insert 62 moves relative to the mold core 5. In this embodiment, the accommodating cavity is located in the middle position of the mold core 5, that is, when the retracting insert 62 approaches the central axis of the guide rod 61, the retracting insert 62 retracts inward relative to the mold core 5. Figure 2 For example, when the mold core 5 moves upward, the guide rod 61 moves downward relative to the mold core 5. At this time, the retracted insert 62 moves upward relative to the guide rod 61, so that the retracted insert 62 moves horizontally toward the first accommodating cavity 51 to retract, so that the retracted insert 62 is separated from the molded product, facilitating the separation of the product from the mold core 5.

[0026] The mold core 5 is provided with a connecting hole 52 , which passes through the surface of the mold core 5 to the first accommodating cavity, and the shrink insert 62 is movably connected to the connecting hole 52 .

[0027] The end of the inward-retracted insert 62 is provided with an inward-retracted forming portion 6454 , which protrudes from the end surface of the inward-retracted insert 62 and is used for forming the inward-retracted buckle position of the inner wall of the product.

[0028] The guide groove 63 is T-shaped, and the end of the retracted insert 62 is provided with a guide portion 65 that matches the guide groove 63. Of course, in a specific implementation, the shape of the guide groove 63 is not limited to T-shaped, as long as it can ensure that the retracted insert 62 moves smoothly and does not separate from the guide rod 61, for example, a dovetail groove can be used.

[0029] The guide rod is provided with an inclined surface 66 at a position corresponding to the guide groove 63 . Since the guide groove 63 is inclined relative to the central axis of the guide rod 61 , the inclined surface 66 facilitates the movement of the retracted insert 62 along the guide groove 63 .

[0030] The bottom of the guide rod is provided with a first connection seat 67, and the mold core 5 is provided with a second accommodating cavity 55 that matches the first connection seat 67. The first connection seat 67 also serves to limit the position of the guide rod 61. In this embodiment, the first connection seat 67 and the guide rod form a stepped structure, and the second accommodating cavity 55 can limit the position of the first connection seat 67, thereby limiting the position of the guide rod within the accommodating cavity.

[0031] The base 1 is provided with a second connecting seat 11, which is connected to the guide rod 61. Specifically, the backing plate 2 is provided with a hole for the second connecting seat 11 to pass through. The second connecting seat 11 is connected to the first connecting seat 67, so that the guide rod 61 is fixedly connected to the base 1. Therefore, during the demolding process, when the mold core 5 moves, it is relatively separated from the guide rod 61.

[0032] The mold core 5 includes a fixing portion 53 and a forming portion 54 disposed on the fixing portion 53. The top surface of the fixing portion 53 is connected to the bottom surface of the rear mold core 4, and the bottom surface of the fixing portion 53 is connected to the backing plate 2. The forming portion 54 extends through the rear mold core 4 to the top of the rear mold core 4. In this embodiment, the fixing portion 53 and the forming portion 54 form a stepped structure.

[0033] In this embodiment, there are two inwardly-set inserts 62, two corresponding guide grooves 63, and two corresponding connection holes 52. The product processed in this embodiment has inwardly-set positions on both inner walls of the opposite sides, so the two inwardly-set inserts 62 are also symmetrically arranged.

[0034] In addition, during injection molding, the mold also includes the front mold core, front mold base, top plate and other structural coordination. Figure 2For example, when demolding the product after molding, the pad 2 moves upward to push the mold core 5 upward. At this time, the guide rod 61 is pulled out from the mold core 5, that is, the guide rod 61 and the mold core 5 are relatively far apart, and the retracted insert 62 retracts under the drive of the guide rod 61 and separates from the inner wall of the product. Then, the rear mold base 3 moves upward and the rear mold core 4 contacts the product and pushes the product and the mold core 5 to separate until the product falls off the mold core 5, and the product demolding is completed.

[0035] In the design of the present invention, a retracted component 6 is cleverly set inside the mold core 5. The component includes a guide rod 61 and a retracted insert 62. This innovative design shows significant advantages in the demoulding operation. When the mold core 5 begins to withdraw and gradually moves away from the guide rod 61, the retracted insert 62 is separated from the molded product, creating favorable conditions for the subsequent demoulding steps. At this time, the rear mold core 4 is able to smoothly push the product to separate from the mold core 5, thereby achieving an efficient and fast demoulding process. Through the coordinated operation of the retracted component 6, the rear mold base 3, and the rear mold core 4, the traditional inclined top structure is replaced. This improvement not only avoids the formation of unsightly inclined top marks on the product surface, but also meets the design standards of transparent or translucent products. This breakthrough in design ensures the surface quality of the product, meets market demand, and also enhances the market competitiveness of the product. In summary, the injection mold design of the present invention, with its unique retracted component 6 and optimized demoulding mechanism, ensures product quality while also improving production efficiency.

[0036] In the description of the present invention, it should be understood that the indicated orientations or positional relationships are only for the purpose of facilitating the description of the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] Furthermore, the terms "first," "second," and so on are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0038] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0039] Although the present invention has been described with reference to the above specific embodiments, it is apparent that those skilled in the art can make many substitutions, modifications, and variations based on the above. Therefore, all such substitutions, modifications, and variations are intended to fall within the scope of the appended claims.

Claims

1. A mold structure with rapid demoulding, characterized in that: It includes a base, a pad arranged on the base, a rear mold base arranged on the pad, a rear mold core arranged on the rear mold base, a mold core connected to the pad, the mold core passes through the rear mold base and the rear mold core and extends to above the rear mold core, the mold core has a first accommodating cavity inside, and a retracting component is arranged in the first accommodating cavity; the retracting component includes a guide rod arranged in the first accommodating cavity, a retracting insert connected to the guide rod, the retracting insert is movably connected to the mold core, the guide rod is provided with a guide groove, the retracting insert is movably connected to the guide groove, the guide groove is inclined relative to the central axis of the guide rod, the guide groove gradually approaches the central axis of the guide rod from the starting end to the end, and when the guide rod approaches or moves away from the mold core, the retracting insert moves relative to the mold core.

2. The rapid demoulding mold structure according to claim 1, characterized in that: The mold core is provided with a connecting hole, which passes through the surface of the mold core to the first accommodating cavity, and the shrink insert is movably connected to the connecting hole.

3. The rapid demoulding mold structure according to claim 2, characterized in that: An inward buckling forming portion is provided at the end of the inwardly contracted insert.

4. The rapid demoulding mold structure according to claim 1, characterized in that: The guide groove is T-shaped, and the end of the inwardly contracted insert is provided with a guide portion matching the guide groove.

5. The rapid demoulding mold structure according to claim 1, characterized in that: The guide rod is provided with an inclined surface at a position corresponding to the guide groove.

6. The rapid demoulding mold structure according to claim 1, characterized in that: A first connecting seat is provided at the bottom of the guide rod, and a second accommodating cavity matching the first connecting seat is provided at the mold core.

7. The rapid demoulding mold structure according to claim 1, characterized in that: A second connecting seat is provided on the base, and the second connecting seat is connected to the guide rod.

8. The rapid demoulding mold structure according to claim 1, characterized in that: The mold core includes a fixing portion and a forming portion arranged on the fixing portion. The top surface of the fixing portion is connected to the bottom surface of the rear mold core. The bottom surface of the fixing portion is connected to the pad. The forming portion passes through the rear mold core and extends above the rear mold core.

9. The rapid demoulding mold structure according to claim 1, characterized in that: There are two inwardly-retracted inserts, and there are correspondingly two guide grooves.

Images