A toy injection mold

Abstract

The utility model belongs to injection mold technical field, and specifically is a kind of toy injection mold, including base, base top end is equipped with stripping structure, stripping structure includes fixed mould, base top end is fixedly connected with fixed mould, and fixed mould top end is fixedly connected with mounting panel, and mounting panel top end both sides are fixedly connected with first mould, and mounting panel both sides are slidably connected with ejector rod, and ejector rod top end is fixedly connected with top plate, and two ejector rod top ends are fixedly connected with second mould, and the inside sliding connection of mounting panel has slide rod, and slide rod top end is fixedly connected with abutment plate, and abutment plate and top plate abut, and slide rod top end is fixedly connected with third mould, and fixed mould is equipped with transmission structure;It can prevent plastic cooling shrinkage, and tightly wrap multiple moulds, to cause in stripping, product is lengthened, distorted when ejecting, and also facilitate to the stripping of the semicircular shell of injection molding, to be able to improve the injection molding quality of toy, so that the precision injection molding of toy greatly improves.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, specifically a toy injection mold. Background Technology

[0002] In the processing of plastic toys, the toy parts are generally injection molded, and then the injection-molded toy parts are assembled together. Injection molds are generally suitable for heating and molding thermoplastic plastics. Utilizing the principle of thermoplastic melting, molten plastic is injected into the mold cavity through an injection molding machine, then cooled and solidified, and the mold is opened to remove the plastic product.

[0003] When injection molding the semi-circular shell of some toys, the plastic shrinks as it cools after injection molding, tightly wrapping around the protruding core. As a result, the product is stretched and twisted when the shell is ejected, causing key dimensions (such as roundness and diameter) to deviate from the design tolerances, resulting in a loss of assembly precision and affecting the product's accuracy. Furthermore, the inner surface of the product is easily scratched, or the outer curved surface may turn white due to excessive stretching, which can affect the precision injection molding of the toy shell during production.

[0004] Therefore, an injection mold with high injection precision is needed. Summary of the Invention

[0005] Based on this, this solution provides a toy injection mold that can prevent the plastic from tightly wrapping around the multiple protruding molds when it cools and shrinks, avoiding the product being stretched, twisted, or scratched during demolding and ejection. It also facilitates demolding of the semi-circular shell after injection molding, improving the injection molding quality and precision of the toy.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A toy injection mold includes a base, a demolding structure mounted on the top of the base, the demolding structure including a fixed mold, a fixed mold fixedly connected to the top of the base, a mounting plate fixedly connected to the top of the fixed mold, first molds fixedly connected to both sides of the top of the mounting plate, ejector rods slidably connected to both sides of the mounting plate, a top plate fixedly connected to the top of the ejector rods, second molds fixedly connected to the tops of the two ejector rods, a sliding rod slidably connected inside the mounting plate, an abutment plate fixedly connected to the top of the sliding rod, the abutment plate abutting against the top plate, a third mold fixedly connected to the top of the sliding rod, and a transmission structure mounted on the fixed mold.

[0007] Preferably, the transmission structure includes a transmission plate, and the transmission plates are slidably connected to both sides inside the fixed mold. The transmission plate is provided with a positioning groove, and a positioning rod is fixedly connected to the side end of the ejector rod. The positioning groove and the positioning rod are slidably connected.

[0008] Optionally, in one embodiment of the present invention, the positioning groove has an inclined structure, and the positioning rod has an overall cylindrical structure.

[0009] Optionally, in one embodiment of the present invention, a limiting seat is fixedly connected inside the fixed mold, a limiting rod is fixedly connected to the bottom end of the transmission plate, and the limiting seat and the limiting rod are slidably connected.

[0010] Optionally, in one embodiment of the present invention, the limiting seat is generally concave in shape, and the limiting rod is generally convex in shape.

[0011] Optionally, in one embodiment of the present invention, a transmission rod is slidably connected inside the fixed mold, and inclined grooves are provided on both sides of the transmission rod. Fixed shafts are fixedly connected to the side ends of the two transmission plates, and the inclined grooves and fixed shafts are slidably connected.

[0012] Optionally, in one embodiment of the present invention, the top end of the transmission rod is provided with a fixing groove, and the bottom end of the slide rod is fixedly connected with a fixing rod, wherein the fixing groove and the fixing rod are slidably connected.

[0013] Optionally, in one embodiment of the present invention, an electric push rod is installed at the top of the base, and the output end of the electric push rod is fixedly connected to the bottom end of the transmission rod.

[0014] Optionally, in one embodiment of the present invention, an injection molding structure is installed at the top of the fixed mold, the injection molding structure includes a moving mold, the top of the fixed mold is slidably connected to the moving mold, the top of the moving mold is fixedly connected to a connecting column, and the connecting column is provided with an injection hole.

[0015] Optionally, in one embodiment of the present invention, a plurality of mounting rods are fixedly connected to the top of the fixed mold, and the mounting rods are inserted into the moving mold.

[0016] Compared with the prior art, the toy injection mold provided by this utility model has the following characteristics: During demolding, the two ejector pins slide upwards simultaneously, causing the two second molds to slide upwards as well. The ejector pins, through contact with the top plate and the abutment plate, drive the sliding rod and the third mold upwards, thus enabling the second and third molds to slide upwards. This allows the molded semi-circular shell and the two first molds to be demolded. The second molds stop sliding upwards, while the sliding rods continue to rise, allowing the third mold to rise and demold the semi-circular shell and the two second molds. This staged automatic demolding of the semi-circular shell prevents the plastic from tightly wrapping around the protruding molds during cooling and shrinkage, which could cause the product to be stretched, twisted, scratched, or whitened due to excessive stretching of the outer curved surface during demolding. Furthermore, excessive ejector pin force could easily puncture the product. This improves the injection molding quality and precision of toys. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the connection structure between the inclined groove and the fixed shaft in Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the connection structure between the top plate and the contact plate in Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the connection structure between the mounting plate and the first mold in Embodiment 1 of this utility model.

[0019] Attached reference numerals: 1. Base; 2. Demolding structure; 3. Fixed mold; 4. Mounting plate; 5. First mold; 6. Ejector pin; 7. Top plate; 8. Second mold; 9. Slide bar; 10. Contact plate; 11. Third mold; 2. Transmission structure; 3. Transmission plate; 4. Positioning groove; 5. Positioning rod; 6. Limiting seat; 7. Limiting rod; 8. Transmission rod; 9. Inclined groove; 10. Fixed shaft; 11. Fixed groove; 12. Fixed rod; 13. Electric push rod; 14. Injection structure; 15. Moving mold; 16. Connecting column; 17. Injection hole; 18. Mounting rod. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0021] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" 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 component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. Example

[0022] Because existing injection molding equipment cannot regularly and conveniently check the airtightness of the parting surface, if the parting surface becomes poorly sealed due to wear, foreign objects, or installation errors, overflow is very likely to occur during high-pressure injection of the melt. Therefore, an injection molding device capable of self-checking airtightness is designed, and the specific solution is as follows: like Figure 1-4 As shown, a toy injection mold includes a base 1, a demolding structure 2 installed at the top of the base 1, the demolding structure 2 including a fixed mold 201, the fixed mold 201 is fixedly connected to the top of the base 1, the fixed mold 201 is fixedly connected to the top of the fixed mold 201, the first mold 203 is fixedly connected to both sides of the top of the mounting plate 202, the ejector rods 204 are slidably connected to both sides of the mounting plate 202, the top of the ejector rods 204 is fixedly connected to the top of the ejector rods 204, the top of the two ejector rods 204 is fixedly connected to the top of the second mold 206, the sliding rod 207 is slidably connected inside the mounting plate 202, the top of the sliding rod 207 is fixedly connected to the abutment plate 208, the abutment plate 208 abuts against the top plate 205, the top of the sliding rod 207 is fixedly connected to the top of the third mold 209, and a transmission structure 3 is installed on the fixed mold 201.

[0023] The transmission structure 3 includes a transmission plate 301. The transmission plate 301 is slidably connected to both sides of the fixed mold 201. The transmission plate 301 is provided with a positioning groove 302. The side end of the ejector rod 204 is fixedly connected to a positioning rod 303. The positioning groove 302 and the positioning rod 303 are slidably connected. The positioning groove 302 has an inclined structure. The positioning rod 303 has an overall cylindrical structure, so that the ejector rod 204 can be driven to slide through the positioning rod 303.

[0024] The fixed mold 201 is internally connected to a limiting seat 304, and the bottom end of the transmission plate 301 is fixedly connected to a limiting rod 305. The limiting seat 304 and the limiting rod 305 are slidably connected. The limiting seat 304 has a concave shape, and the limiting rod 305 has a convex shape, so as to guide and limit the transmission plate 301.

[0025] The fixed mold 201 has a sliding connection to a transmission rod 306. Both sides of the transmission rod 306 are provided with inclined grooves 307. The two transmission plates 301 are fixedly connected to fixed shafts 308 at their side ends. The inclined grooves 307 and fixed shafts 308 are slidably connected, thereby enabling the two transmission plates 301 to slide towards each other.

[0026] The top end of the transmission rod 306 is provided with a fixing groove 309, and the bottom end of the slide rod 207 is fixedly connected to a fixing rod 310. The fixing groove 309 and the fixing rod 310 are slidably connected, thereby enabling the fixing rod 310 to slide.

[0027] An electric push rod 311 is installed at the top of the base 1. The output end of the electric push rod 311 is fixedly connected to the bottom end of the transmission rod 306, thereby enabling the transmission rod 306 to slide upward.

[0028] An injection molding structure 4 is installed at the top of the fixed mold 201. The injection molding structure 4 includes a moving mold 401. The moving mold 401 is slidably connected to the top of the fixed mold 201. A connecting post 402 is fixedly connected to the top of the moving mold 401. An injection hole 403 is provided in the connecting post 402. Multiple mounting rods 404 are fixedly connected to the top of the fixed mold 201. The mounting rods 404 and the moving mold 401 are inserted into each other, thereby enabling injection molding of toy parts.

[0029] Structural Description: In use, the moving mold 401 is connected to an external lifting device. The external lifting device is started to drive the moving mold 401 to descend. After the moving mold 401 and the mounting rod 404 are inserted, injection molding is performed between the moving mold 401 and the fixed mold 201 through the injection hole 403.

[0030] After injection molding, the moving mold 401 is cooled by the cooling pipe inside the moving mold 401. The moving mold 401 then slides upward. When the moving mold 401 separates from the injection-molded semi-circular shell, the electric push rod 311 drives the transmission rod 306 to slide upward. Through the sliding of the inclined groove 307 and the fixed shaft 308, the two transmission plates 301 can slide towards each other. When the transmission plates 301 slide towards each other, through the inclined groove of the positioning groove 302 and the sliding of the positioning rod 303, the two ejector rods 204 can slide upward simultaneously. Therefore, the two second molds 206 can be driven to slide upward. When the ejector rod 204 slides, it abuts against the top plate 205 and the contact plate 208, which drives the slide rod 207 and the third mold 209 to slide upward. This drives the second molds 206 and the third mold 209 to slide upward, thus demolding the injection-molded semi-circular shell and the two first molds 203.

[0031] After the positioning rod 303 slides into the transverse groove in the positioning groove 302, the second mold 206 no longer slides upward. The bottom of the fixing groove 309 in the transmission rod 306 abuts against the fixing rod 310. Therefore, the transmission rod 306 can continue to rise and drive the fixing rod 310 to slide upward, which can drive the slide rod 207 to rise again. Thus, the semi-circular shell and the two second molds 206 can be demolded by the third mold 209 rising. Then, the injection-molded semi-circular shell can be removed.

[0032] After injection molding, the injection mold of this solution can automatically complete all demolding steps by simply activating the electric push rod 311, which shortens the production cycle, reduces labor costs and operation time, is suitable for the mass production of toy parts, reduces contact between workers and the mold, and improves work safety.

[0033] The installation of structural components such as transmission plate 301, inclined positioning groove 302, positioning rod 303, and inclined groove 307, and the demolding sequence is controlled by the action of mechanical structural components, which can avoid product tearing, scratching or tearing caused by incorrect action sequence, and can ensure the quality of product surface.

[0034] The ejector pin 204 is driven simultaneously by the transmission plates 301 that slide in opposite directions, ensuring that the second molds 206 on both sides are ejected synchronously, preventing product skewing, jamming or deformation caused by uneven ejection.

[0035] All mechanically linked structural components are built into the mold, making the overall mold structure compact, simple in appearance, and saving installation space.

[0036] The sliding connection between the limit seat 304 and the limit rod 305 provides precise guidance for the transmission plate 301, preventing it from deflecting or jamming during movement.

[0037] By adjusting the specific cavity shapes of the first mold 203, the second mold 206, and the third mold 209, they can be applied to other similar toy products, such as spherical shells and doll joints. Example

[0038] In this embodiment, the structure of the mold is basically the same as that of Embodiment 1. The difference is that a detachable insert is provided on the transmission plate 301, and the positioning groove 302 is opened on the insert. When the positioning groove 302 is worn, only the insert needs to be replaced, and the entire transmission plate 301 does not need to be replaced, thus reducing the cost of use.

[0039] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A toy injection mold, characterized in that, The device includes a base, a demolding structure mounted on the top of the base, the demolding structure including a fixed mold, a fixed mold fixedly connected to the top of the base, a mounting plate fixedly connected to the top of the fixed mold, first molds fixedly connected to both sides of the top of the mounting plate, ejector rods slidably connected to both sides of the mounting plate, a top plate fixedly connected to the top of the ejector rods, second molds fixedly connected to the tops of the two ejector rods, a sliding rod slidably connected inside the mounting plate, an abutment plate fixedly connected to the top of the sliding rod, the abutment plate abutting against the top plate, a third mold fixedly connected to the top of the sliding rod, and a transmission structure mounted on the fixed mold.

2. The toy injection mold according to claim 1, characterized in that: The transmission structure includes a transmission plate, and the transmission plates are slidably connected to both sides inside the fixed mold. The transmission plate is provided with a positioning groove, and a positioning rod is fixedly connected to the side end of the ejector rod. The positioning groove and the positioning rod are slidably connected.

3. A toy injection mold according to claim 2, characterized in that: The positioning groove has an inclined structure, and the positioning rod has an overall cylindrical structure.

4. A toy injection mold according to claim 2, characterized in that: The fixed mold is fixedly connected to a limiting seat, and the bottom end of the transmission plate is fixedly connected to a limiting rod. The limiting seat and the limiting rod are slidably connected.

5. A toy injection mold according to claim 4, characterized in that: The limiting seat has a concave shape, and the limiting rod has a convex shape.

6. A toy injection mold according to claim 2, characterized in that: A transmission rod is slidably connected inside the fixed mold. The transmission rod has inclined grooves on both sides. Fixed shafts are fixedly connected to the side ends of the two transmission plates. The inclined grooves and fixed shafts are slidably connected.

7. A toy injection mold according to claim 6, characterized in that: The transmission rod has a fixed groove at its top end, and a fixed rod is fixedly connected to the bottom end of the slide rod. The fixed groove and the fixed rod are slidably connected.

8. A toy injection mold according to claim 6, characterized in that: An electric push rod is installed at the top of the base, and the output end of the electric push rod is fixedly connected to the bottom end of the transmission rod.

9. A toy injection mold according to claim 1, characterized in that: An injection molding structure is installed at the top of the fixed mold. The injection molding structure includes a moving mold. The moving mold is slidably connected to the top of the fixed mold. A connecting column is fixedly connected to the top of the moving mold. An injection hole is provided in the connecting column.

10. A toy injection mold according to claim 9, characterized in that: The top of the fixed mold is fixedly connected to multiple mounting rods, which are inserted into the moving mold.

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