Die structure for metal insert product

Abstract

The utility model relates to the technical field of dies, in particular to a die structure for a metal insert product, which comprises a bottom plate, a die foot arranged on the bottom plate, a rear die holder arranged on the die foot and a rear die core connected with the rear die holder, the rear die core is provided with a forming area, and a movable insert is arranged at the position, close to the forming area, of the rear die core. A plurality of movable inserts are further arranged around the forming area, limiting parts are arranged on the sides, facing the forming area, of the movable inserts, and limiting grooves matched with the metal inserts are formed in the limiting parts. The movable insert is arranged in the rear mold core, the movable insert limits the metal insert after being placed in the rear mold core, it is guaranteed that the metal insert is located at the preset position in the injection molding process, the product forming quality is guaranteed, meanwhile, the inverted buckle part of the metal insert pulls the movable insert in the demolding process, and the metal insert is prevented from falling off. And the movable insert is separated from the mold core to realize quick demolding.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and particularly relates to a mold structure for metal insert products. Background Art

[0002] Injection molding is a manufacturing technology widely used in industrial production. It injects molten thermoplastic or thermosetting materials into precisely designed molds, and after cooling and solidifying, various shaped and sized plastic products are formed. This process usually relies on an injection molding machine, which can provide the pressure and temperature control required for injection molding. In addition to traditional single-material injection molding products, according to different designs, there are also ways to use two or more materials for injection molding, such as using two different plastic raw materials, or embedding metal parts into plastics for molding. The method of metal insert injection molding combines the strength of metal and the light weight and corrosion resistance of plastics, enabling products to meet different usage requirements. For example, metal inserts can provide additional strength and durability, making the final product more robust. Also, metals have better electrical and thermal conductivity than plastics, which are suitable for products that require these properties. Therefore, metal insert injection molding is widely used in many fields such as automobiles, electronics, household appliances, and construction. In the structure of some metal insert products, the metal parts have undercut structures. For example, in the product shown Figure 6 In addition to the undercut of the metal part, there are also multiple buckles, which will get hooked during the demolding process, making the demolding rather troublesome. Summary of the Utility Model

[0003] In order to solve the above problems, the utility model provides a mold structure for metal insert products.

[0004] The utility model is implemented as follows:

[0005] A mold structure for metal insert products includes a bottom plate, mold feet disposed on the bottom plate, a rear mold base disposed on the mold feet, a rear mold core connected to the rear mold base. The rear mold core is provided with a molding area. An active insert matching the metal insert is disposed near the molding area of the rear mold core. A number of active inserts are also disposed around the molding area. The lower ends of the active inserts pass through the rear mold core and extend below the bottom surface of the rear mold core. A connecting rod is connected to the lower ends of the active inserts. A limiting portion is disposed on one side of the active insert facing the molding area, and a limiting groove matching the metal insert is disposed on the limiting portion.

[0006] Furthermore, the active insert is of a stepped structure, including a first stepped portion and a second stepped portion, and the limiting portion is disposed on the first stepped portion.

[0007] Furthermore, the rear mold core is provided with a stepped hole matching the movable insert.

[0008] Furthermore, a guide rod is disposed on the bottom surface of the second stepped portion, and a guide hole matching the guide rod is disposed at the bottom of the stepped hole.

[0009] Furthermore, a first molded concave portion is provided on the top surface of the movable insert.

[0010] Furthermore, the movable insert includes an inclined rod and a molding portion arranged at the upper end of the inclined rod, and a molding groove matching the buckle is arranged on the side of the molding portion facing the molding area.

[0011] Furthermore, a second molding concave portion is provided on the top surface of the molding portion.

[0012] Furthermore, the molding area is provided with a placement groove for placing the metal insert, and a positioning pin is provided in the placement groove.

[0013] Furthermore, the molding area is provided with a molding boss matching the metal insert.

[0014] Furthermore, an ejector plate is provided on the bottom plate, and the lower end of the connecting rod is connected to the ejector plate.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model provides a movable insert on the rear mold core, and the movable insert limits the metal insert after the rear mold core is placed, thereby ensuring that the metal insert is located at a preset position during the injection molding process and ensuring the molding quality of the product. At the same time, under the action of the limiting part, the undercut part of the metal insert pulls the movable insert during the demoulding process, so that the movable insert is separated from the rear mold core together to achieve rapid demoulding, and the movable insert can also be quickly installed on the rear mold core before injection molding. The operation is simple and fast, and the working efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model provides a schematic diagram of a mold structure for a metal insert product.

[0018] Figure 2 It is a cross-sectional view of the rear mold core part of the utility model.

[0019] Figure 3 It is a schematic diagram of the rear mold core of the utility model.

[0020] Figure 4 It is a schematic diagram of the movable insert of the utility model.

[0021] Figure 5 The utility model is a distribution diagram of the movable insert and the movable insert.

[0022] Figure 6 Schematic diagram of the product produced by the present utility model.

[0023] The figure includes:

[0024] Bottom plate 1, die feet 2, rear die base 3, rear die core 4, forming area 41, stepped hole 42, guiding hole 43, placing groove 44, positioning pin 45, forming boss 46, movable insert 5, limiting part 51, limiting groove 52, first stepped part 53, second stepped part 54, first formed concave part 55, guiding rod 56, movable insert 6, connecting rod 61, inclined rod 62, forming part 63, forming groove 64, second formed concave part 65, ejector plate 7, metal insert 8, product 9. Specific implementation mode

[0025] To facilitate those skilled in the art to understand the present utility model, the present utility model will be further described in detail below in conjunction with specific embodiments and drawings.

[0026] Referring to Figures 1 to 5 , a mold structure for a metal insert 8 product provided by the present utility model includes a bottom plate 1, die feet 2 arranged on the bottom plate 1, a rear die base 3 arranged on the die feet 2, a rear die core 4 connected to the rear die base 3, a forming area 41 is provided on the rear die core 4, a movable insert 5 matching the metal insert 8 is arranged at a position of the rear die core 4 close to the forming area 41, a plurality of movable inserts 6 are further arranged around the forming area 41, the lower ends of the movable inserts 6 penetrate through the rear die core 4 and extend below the bottom surface of the rear die core 4, and a connecting rod 61 is connected to the lower ends of the movable inserts 6. In this embodiment, the produced product has six buckles, six movable inserts 6 are correspondingly arranged, and the movable insert 5 is arranged between two adjacent movable inserts 6.

[0027] A limiting part 51 is arranged on one side of the movable insert 5 facing the forming area 41, and a limiting groove 52 matching the metal insert 8 is arranged on the limiting part 51. From Figure 2 's perspective, the metal insert 8 contacts the bottom surface of the limiting part 51.

[0028] The movable insert 5 is a stepped structure, including a first stepped part 53 and a second stepped part 54, and the limiting part 51 is arranged on the first stepped part 53. The rear die core 4 is provided with a stepped hole matching the movable insert 5. The second stepped part 54 contacts the inner wall of the stepped hole 42 to play a role of positioning and limiting. The limiting part 51 is arranged on one side of the first stepped part 53. Therefore, in the stepped hole 42 at this place, there is a certain distance between the first stepped part 53 and the hole wall, and this distance is also the size of the inverted buckle part of the metal insert 8.

[0029] A guide rod 56 is disposed on the bottom surface of the second stepped portion 54, and a guide hole 43 matching the guide rod 56 is disposed at the bottom of the stepped hole 42. The guide hole 43 can make the movable insert 5 more stable when moving.

[0030] The top surface of the movable insert 5 is provided with a first molding concave portion 55. Specifically, the first molding concave portion 55 constitutes a part of the molding area 41 of the product, and together constitutes a molding cavity of the product during the injection molding process.

[0031] The movable insert 6 includes an inclined rod 62 and a molding portion 63 disposed at the upper end of the inclined rod 62 . A molding groove 64 matching the buckle is disposed on the side of the molding portion 63 facing the molding area 41 .

[0032] The top surface of the molding portion 63 is provided with a second molding lower concave portion 65. Specifically, the second molding lower concave portion 65 constitutes a part of the molding area 41 of the product, and together constitutes a molding cavity of the product during the injection molding process.

[0033] The molding area 41 is provided with a placement groove 44 for placing the metal insert 8, and a positioning pin 45 is provided in the placement groove 44. Before injection molding, the metal insert 8 is placed in the placement groove 44. After the metal insert 8 is completely placed, the movable insert 5 is inserted into the stepped hole 42, so that the undercut part of the metal insert 8 contacts the movable insert 5, so as to realize the positioning of the metal insert 8.

[0034] The molding area 41 is provided with a molding boss 46 matching the metal insert 8. The molding boss 46 corresponds to the concave portion in the metal insert 8 of the product produced by the utility model.

[0035] In the demoulding mechanism of the present invention, an ejector plate 7 is carefully designed and installed above the base plate 1, and the ejector plate 7 is tightly connected to the lower end of the connecting rod 61. This ingenious design plays a vital role in the demoulding process. When the demoulding is started, the connecting rod 61 is ejected upward, driving the molding part 63 of the movable insert 6 to separate from the rear mold core 4, and at the same time, the molding part 63 will move precisely in the direction away from the center of the product. This series of actions allows the molding part 63 to be smoothly disconnected from the snap-on structure on the product, thereby creating conditions for the rapid demoulding of the product. Through this design, not only the demoulding efficiency is improved, but also the risk of damage to the product is reduced, ensuring the integrity and surface quality of the product. In addition, this demoulding method also helps to reduce production costs and improve production efficiency, and has significant advantages for precision manufacturing and mass production.

[0036] In the injection molding production of this embodiment, there are also other mold structures such as the front mold core and the front mold base. After the injection molding is completed, the front mold core and the rear mold core 4 are smoothly separated, and the movable insert 6 is ejected accordingly. At this time, under the action of the undercut part of the metal insert 8, the movable block 5 can be separated from the rear mold core 4 at the same time and separated from the product together. This design not only simplifies the demolding process but also ensures the integrity of the product. When performing the next injection molding, only need to put the metal insert 8 into the mold and then place the movable block 5 in place. This operation method greatly improves the production efficiency and reduces the downtime. In addition, in order to further improve the feeding efficiency, multiple movable blocks 5 can be set for replacement during specific implementation, so as to achieve a more efficient production process. Through this flexible design, the injection molding process becomes more efficient and convenient, meeting the requirements of modern manufacturing for rapid production and high quality.

[0037] In the rear mold core 4 of the present utility model, a movable block 5 is provided. After the movable block 5 is placed in the rear mold core 4, it limits the metal insert 8 to ensure that the metal insert 8 is located at the preset position during the injection molding process, guaranteeing the product molding quality. At the same time, under the action of the limiting part 51, the undercut part of the metal insert 8 pulls the movable block 5 during the demolding process, so that the movable block 5 is separated from the rear mold core 4 together to achieve rapid demolding, and the movable block 5 can also be quickly installed on the rear mold core 4 before injection molding. The operation is simple and fast, improving the operation efficiency.

[0038] In the description of the present utility model, it should be understood that the indicated orientation or positional relationship is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0039] In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise clearly and specifically defined.

[0040] In the present utility model, unless otherwise clearly specified and limited, terms such as "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] Although the description of the present utility model is made in combination with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and variations based on the above content. Therefore, all such substitutions, improvements and variations are included within the scope of the appended claims.

Claims

1. A mold structure for metal insert products, characterized in that, It includes a bottom plate, mold feet disposed on the bottom plate, a rear mold base disposed on the mold feet, a rear mold core connected to the rear mold base. The rear mold core is provided with a molding area. At a position of the rear mold core close to the molding area, a movable insert matching the metal insert is provided. A plurality of movable inserts are also provided around the molding area. The lower ends of the movable inserts pass through the rear mold core and extend below the bottom surface of the rear mold core. A connecting rod is connected to the lower ends of the movable inserts. A limiting portion is provided on one side of the movable insert facing the molding area. The limiting portion is provided with a limiting groove matching the metal insert.

2. The mold structure for metal insert products according to claim 1, characterized in that, The movable insert is of a stepped structure, including a first stepped portion and a second stepped portion. The limiting portion is disposed on the first stepped portion.

3. The mold structure for metal insert products according to claim 2, characterized in that, The rear mold core is provided with a stepped hole matching the movable insert.

4. The mold structure for metal insert products according to claim 3, characterized in that, A guide rod is provided on the bottom surface of the second stepped portion. A guide hole matching the guide rod is provided at the bottom of the stepped hole.

5. The mold structure for metal insert products according to claim 1, characterized in that, A first molding concave portion is provided on the top surface of the movable insert.

6. The mold structure for metal insert products according to claim 1, characterized in that, The movable insert includes an inclined rod and a molding portion disposed at the upper end of the inclined rod. A molding groove matching the buckle is provided on one side of the molding portion facing the molding area.

7. The mold structure for metal insert products according to claim 6, characterized in that, A second molding concave portion is provided on the top surface of the molding portion.

8. The mold structure for metal insert products according to claim 1, characterized in that, The molding area is provided with a placement groove for placing the metal insert, and positioning pins are provided in the placement groove.

9. The mold structure for metal insert products according to claim 1, characterized in that, The molding area is provided with a molding boss matching the metal insert.

10. The mold structure for metal insert products according to claim 1, characterized in that, An ejector plate is provided on the bottom plate, and the lower end of the connecting rod is connected to the ejector plate.

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