Limiting mechanism and forming die comprising same

Abstract

The utility model discloses a limiting mechanism and a forming die comprising the same, the limiting mechanism is used in the forming die, the forming die comprises a lower die core, a section die is arranged in the lower die core, and the limiting mechanism is characterized by comprising a push-pull rod, a mounting plate and a driving mechanism, the lower mold core is provided with one or more through holes distributed in the height direction of the lower mold core, the push-pull rods are installed in the through holes, the driving mechanism drives the push-pull rods to move downwards through the installation plate, and vacuum is formed between the push-pull rods and the section mold so that the section mold can be attached to the lower mold core. The mold can be fastened in a vacuum mode, so that the efficiency can be improved and the cost can be saved while the mold is convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of molding dies, in particular to a limiting mechanism and a molding die comprising the limiting mechanism. Background Art

[0002] In some scenarios where workpieces are processed based on forming molds, a mold is needed. The mold is generally set in the mold cavity and placed on the lower mold core. The workpiece is formed based on the mold. In order to prevent the mold from moving in the mold cavity, the existing mold is generally installed in the lower mold core by interference fit. This method requires a lot of effort to install each time the mold is installed, or it needs to be completed with the help of other tools, which wastes a lot of manpower or financial resources and is inefficient. Utility Model Content

[0003] The utility model aims to provide a limiting mechanism and a molding die including the limiting mechanism, which can fasten the mold by vacuum, facilitate the installation of the mold, improve efficiency and save costs.

[0004] To achieve the above-mentioned purpose, the first aspect of an embodiment of the utility model discloses a limiting mechanism, which is used in a molding mold, wherein the molding mold includes a lower mold core, and a mold is arranged inside the lower mold core. The limiting mechanism includes a push-pull rod, a mounting plate and a driving mechanism. The lower mold core is provided with one or more through holes distributed along the height direction of the lower mold core, and the push-pull rod is installed in the through hole. The driving mechanism drives the push-pull rod to move downward through the mounting plate, and a vacuum is formed between the push-pull rod and the mold so that the mold fits onto the lower mold core.

[0005] In the first aspect of the utility model, as a preferred embodiment, the mounting plate includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are fixedly connected, the rear end of the push-pull rod is located between the first mounting plate and the second mounting plate, and the front end of the push-pull rod extends into the through hole.

[0006] In the first aspect of the utility model, as a preferred embodiment, a hollow groove is provided on the first mounting plate, the push-pull rod includes a push-pull rod body and a boss located at the rear end of the push-pull rod, the boss is fixedly connected to or integrally formed with the push-pull rod body, the boss is placed at the bottom of the hollow groove, and the push-pull rod body passes through the hollow groove and extends into the through hole.

[0007] In the first aspect of the utility model, as a preferred embodiment, the transverse cross-section of the boss is a major arc, the bottom of the hollow groove is provided with a matching groove adapted to the shape of the boss, and the boss is located in the matching groove.

[0008] In the first aspect of the utility model, as a preferred embodiment, the push-pull rod also includes a square column located at the front end of the push-pull rod body, the through hole includes a square hole portion and a round hole portion, one end of the round hole portion extends to the lower end surface of the lower mold core, the other end of the round hole portion is connected to the round hole portion, and the other end of the round hole portion extends to the lower end surface of the mold.

[0009] In the first aspect of the utility model, as a preferred embodiment, the driving mechanism includes a power device, and the push-pull rod of the power device is fixedly connected to the mounting plate.

[0010] In the first aspect of the utility model, as a preferred embodiment, the power device is a linear motor or a cylinder or a hydraulic cylinder.

[0011] In the first aspect of the utility model, as a preferred embodiment, the limiting mechanism also includes a fixing plate, which is located on the lower side of the mounting plate, and the fixing plate is fixedly connected to the lower mold core by fastening bolts, and a guide sleeve is arranged on the mounting plate, and the guide sleeve is sleeved on the outer side of the fastening bolts.

[0012] The second aspect of the utility model discloses a forming mold, which comprises a lower mold core, a mold and the limiting mechanism described in the first aspect of the utility model.

[0013] In the second aspect of the utility model, as a preferred embodiment, the lower mold core includes a lower mold core body and a lower insert embedded in the lower mold core body, the lower insert is provided with a lower cavity, the mold is placed in the lower cavity, and the perforation is opened on the lower insert.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model realizes the formation of vacuum between the mold and the push-pull rod through the vacuum limiting mechanism, thereby tightly attaching the mold to the lower mold core, avoiding complicated installation of the mold, improving efficiency and saving cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a molding die in one direction of an embodiment of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the molding die in another direction of an embodiment of the utility model;

[0018] Figure 3 for Figure 1 A cross-sectional view in one direction;

[0019] Figure 4 for Figure 1 A cross-sectional view in one direction;

[0020] Figure 5 for Figure 4 A magnified image of area A;

[0021] Figure 6 is a schematic diagram of the structure of the lower insert;

[0022] Figure 7 It is a schematic diagram of the structure of the push-pull rod;

[0023] Figure 8 Schematic diagram of the mold structure.

[0024] Among them: 10, upper mold core; 11, upper mold core body; 12, upper insert; 20, lower mold core; 21, lower mold core body; 22, lower insert; 221, perforation; 2211, round hole portion; 2212, square hole portion; 222, mounting hole; 31, second mounting plate; 32, first mounting plate; 41, power device; 42, telescopic rod; 43, push-pull rod; 431, square column; 432, push-pull rod body; 433, convex column; 50, mold; 511, inner groove of mold; 512, bottom column; 60, fixing plate; 70, blocking plate; 80, injection plate mounting position; 90, workpiece. DETAILED DESCRIPTION

[0025] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0026] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] Embodiment 1

[0029] Please refer to Figure 1-5 As shown, a limiting mechanism is used in a forming mold to limit the mold, facilitate the installation of the mold, and avoid shaking or deviation of the mold, wherein the mold 50 can be a built-in component for forming a workpiece 90, or it can be a lower layer of a formed workpiece for forming the upper layer of a composite workpiece. For example, when composite aluminum and titanium materials, an aluminum substrate can be formed first as a mold, and then a titanium plate can be formed on the upper layer of the aluminum substrate.

[0030] The mold 50 is located in a mold cavity formed between the upper mold core and the lower mold core 20 (the mold cavity may include an upper mold cavity formed on the upper mold core and a lower mold cavity formed on the lower mold core 20 ), specifically, is placed on the lower mold cavity formed on the lower mold core 20 .

[0031] In order to facilitate the installation of the mold 50, in a preferred embodiment of the present invention, the position of the mold 50 is locked by a limiting mechanism to prevent the mold 50 from moving during the molding process. Figure 2 and Figure 3 As shown, the limiting mechanism includes a push-pull rod 43, a mounting plate and a driving mechanism. The lower mold core 20 is provided with one or more through holes 221 distributed along the height direction of the lower mold core 20. The push-pull rod 43 is installed in the through hole 221. The driving mechanism drives the push-pull rod 43 to move downward through the mounting plate. A vacuum is formed between the push-pull rod 43 and the mold 50 so that the mold 50 fits onto the lower mold core 20.

[0032] The design of the limiting mechanism enables the mold 50 to fit more closely on the lower mold core 20. The push-pull rod 43 is driven downward by the driving mechanism, and a vacuum is formed between the push-pull rod and the mold 50, thereby achieving adsorption and fixation of the mold 50. This fixing method not only improves the stability of the mold 50, but also effectively prevents the displacement or deformation of the mold 50 during the molding process, thereby ensuring the accuracy and quality of the molded product.

[0033] Moreover, the limit mechanism has a simple structure and is easy to install and maintain. The push-pull rod 43 is installed on the lower mold core through the through hole 221, and the mounting plate connects the driving mechanism and the push-pull rod 43, making the entire mechanism compact and easy to operate. This design not only reduces the complexity of the mold and reduces the manufacturing cost, but also improves the reliability and service life of the mold.

[0034] In addition, the limiting mechanism has high flexibility and adaptability. Since multiple through holes 221 are provided on the lower mold core, different numbers of push-pull rods 43 can be installed as needed to adapt to molds 50 of different sizes and shapes. This flexibility enables the limiting mechanism to be widely used in various molding molds to meet different production needs. That is, one mold 50 can correspond to one or more push-pull rods 43, and multiple molds 50 can be set in the mold cavity, and these push-pull rods 43 are all driven by a driving mechanism.

[0035] Please refer to Figure 8 As shown, in order to facilitate the adsorption of the mold 50, a bottom column 512 can be set at the bottom of the mold 50. By adsorbing the bottom column 512, on the one hand, the limiting is made more secure, and on the other hand, it will not affect the mold 50 itself. The workpiece 90 is formed in the inner groove 511 of the mold.

[0036] In order to facilitate the installation of the push-pull rod 43, in a preferred embodiment of the present invention, the push-pull rod 43 can be fixed by two mounting plates, and then the movement of the mounting plates and the push-pull rod 43 can be driven by a driving mechanism.

[0037] Please refer to Figure 4 As shown, the mounting plate includes a first mounting plate 32 and a second mounting plate 31, the first mounting plate 32 and the second mounting plate 31 are fixedly connected, the rear end of the push-pull rod 43 is located between the first mounting plate 32 and the second mounting plate 31, and the front end of the push-pull rod 43 extends into the through hole 221.

[0038] The design of using the first mounting plate 32 and the second mounting plate 31 to fix the push-pull rod 43 greatly simplifies the installation process of the push-pull rod 43. The installer can easily place the push-pull rod 43 between the two mounting plates, and the push-pull rod 43 can be stably installed through simple fixing measures. This design not only improves the installation efficiency, but also reduces the installation difficulty, allowing the operator to complete the assembly of the mold more quickly.

[0039] Secondly, since the push-pull rod 43 is firmly fixed between the first mounting plate 32 and the second mounting plate 31, its position stability is effectively guaranteed. This stability ensures that a stable vacuum adsorption relationship can be formed between the push-pull rod 43 and the mold, so that the mold can fit tightly on the lower mold core. This not only helps to improve the quality and precision of the molded product, but also helps to reduce the scrap rate and production cost during the molding process.

[0040] Moreover, by introducing the design of the first mounting plate 32 and the second mounting plate 31, the structure of the limit mechanism is more stable. The first mounting plate 32 and the second mounting plate 31 are fixedly connected to form a stable support structure, which can effectively fix and support the push-pull rod 43, thereby ensuring the stability and accuracy of the push-pull rod 43 during movement. This stability is of great significance for ensuring the stability of the molding die and improving product quality.

[0041] Specifically, a hollow groove can be provided on the first mounting plate 32, and the push-pull rod 43 includes a push-pull rod body 432 and a boss 433 located at the rear end of the push-pull rod, the boss 433 is fixedly connected to the push-pull rod body 432 or is integrally formed, the boss 433 is placed at the bottom of the hollow groove, and the push-pull rod body 432 passes through the hollow groove and extends into the through hole 221.

[0042] In order to prevent the push-pull rod 43 from rotating, in a preferred embodiment of the present invention, the transverse cross-section of the boss 433 is a major arc, and a matching groove matching the shape of the boss 433 is provided at the bottom of the hollow groove, and the boss 433 is located in the matching groove.

[0043] Please refer to Figure 7 As shown, the transverse cross-section of the boss 433 is designed to be an arc shape, which matches the shape of the matching groove set at the bottom of the hollow groove. This design makes the contact area between the boss 433 and the matching groove larger, thereby enhancing the connection stability and firmness between the two. This close matching relationship not only helps to prevent the push-pull rod 43 from loosening or displacement during operation, but also improves the reliability and stability of the entire limit mechanism.

[0044] By optimizing the shape design of the boss 433 and the matching groove, the installation process of the push-pull rod 43 is further simplified. The operator can easily align the boss 433 with the matching groove and insert it therein, thereby realizing the rapid installation of the push-pull rod 43. This design not only improves the installation efficiency, but also reduces the error rate that may occur during the installation process.

[0045] In order to ensure that a complete vacuum is formed in the through hole 221 between the push-pull rod 43 and the mold, in a preferred embodiment of the present utility model, please refer to Figure 6As shown, the push-pull rod 43 also includes a square column 431 located at the front end of the push-pull rod body 432, and the through hole 221 includes a square hole portion 2212 and a round hole portion 2211, one end of the round hole portion 2211 extends to the lower end surface of the lower mold core, and the other end of the round hole portion 2211 is connected to the round hole portion 2211, and the other end of the round hole portion 2211 extends to the lower end surface of the mold.

[0046] The square column 431 at the front end of the push-pull rod 43 matches the square hole 2212 in the through hole 221. The square cross-sectional shape provides a larger contact area and better stability. Compared with a circular cross-sectional shape, a square cross-sectional shape is more resistant to lateral forces, thereby reducing the possible shaking or deviation of the push-pull rod 43 during operation and enhancing the fixing effect between the push-pull rod 43 and the mold.

[0047] The design of the perforation 221 includes a circular hole portion 2211 and a square hole portion 2212. This design not only meets the installation requirements of the push-pull rod 43, but also takes into account the need for vacuum formation. The circular hole portion 2211 extends to the lower end surface of the lower mold core, providing sufficient space for the push-pull rod 43 to move; while the square hole portion 2212 is closely matched with the square column 431 at the front end of the push-pull rod 43, ensuring the stability and accuracy of the push-pull rod 43 when it is fixed.

[0048] In addition, the other end of the circular hole 2211 extends to the lower end surface of the mold. This design enables a closer vacuum adsorption relationship to be formed between the push-pull rod 43 and the mold. When the driving mechanism drives the push-pull rod 43 to move downward, the outer side surface of the push-pull rod body 432 fits tightly with the lower end surface of the mold, and a stable vacuum adsorption structure is formed through the cooperation of the square column 431 and the square hole 2212. This structure can not only ensure the stability of the mold during the molding process, but also help to improve the quality and precision of the molded product.

[0049] The driving mechanism mainly includes a power device 41, which can be a linear motion device, such as a linear motor or a cylinder or a hydraulic cylinder, or a device that converts rotation into linear motion, such as a matching structure of a rotating motor and a lead screw. The utility model preferably uses a linear motion device. In this case, the front end of the telescopic rod 42 of the power device 41 is fixedly connected to the mounting plate.

[0050] In order to further ensure that the push-pull rod will not fail to evacuate due to deviation when the driving mechanism is running, in some embodiments, the limiting mechanism further includes a fixing plate 60, which is located at the lower side of the mounting plate and is fixedly connected to the lower mold core by a fastening bolt, and a guide sleeve is provided on the mounting plate, and the guide sleeve is sleeved on the outer side of the fastening bolt. The fastening bolt here can be regarded as a guide column, and the guide sleeve drives the mounting plate to move along the direction of the guide column, thereby limiting the running direction of the push-pull rod.

[0051] Embodiment 2

[0052] Please refer to Figure 1-5 As shown, a molding die includes an upper die core 10, a lower die core 20, a mold and the limiting mechanism in Embodiment 1. The upper die core 10 and the lower die core 20 constitute a die core, a front end of the die core is provided with an injection plate mounting position 80 for mounting an injection plate, and a rear end of the die core is provided with a blocking plate 70.

[0053] Among them, in order to facilitate the design or replacement of the cavity, in a preferred embodiment of the present utility model, the upper mold core 10 can include an upper mold core body 11 and an upper insert 12 located in the upper mold core body 11, and the lower mold core 20 can include a lower mold core body 21 and a lower insert 22 located in the lower mold core body 21. The upper mold core body 11 cooperates with the lower mold core body 21, and the upper insert 12 cooperates with the lower insert 22. The cavity is set between the upper insert 12 and the lower insert 22. There can be multiple cavities, each cavity corresponds to one or more push-pull rods cooperating therewith, and a lower cavity is set on the lower insert 22. The mold is placed in the lower cavity, and the through hole 221 is opened on the lower insert, thereby realizing the cooperation between the push-pull rod and the mold.

[0054] The lower mold body and the lower insert are fixedly connected to the fixing plate 60. Figure 6 As shown, the lower insert is provided with a mounting hole 222 fixedly connected to the fixing plate 60 , and the end of the fastening bolt passes through the mounting hole 222 to fix the fixing plate 60 and the lower insert.

[0055] Finally, it should be noted that the above-mentioned implementation modes are only optional embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A limiting mechanism, used in a forming mold, wherein the forming mold comprises a lower mold core, and a mold is arranged in the lower mold core, characterized in that: The limiting mechanism includes a push-pull rod, a mounting plate and a driving mechanism. The lower mold core is provided with one or more through holes distributed along the height direction of the lower mold core. The push-pull rod is installed in the through holes. The driving mechanism drives the push-pull rod to move downward through the mounting plate. A vacuum is formed between the push-pull rod and the mold so that the mold fits onto the lower mold core.

2. The limiting mechanism according to claim 1, characterized in that: The mounting plate comprises a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are fixedly connected, the rear end of the push-pull rod is located between the first mounting plate and the second mounting plate, and the front end of the push-pull rod extends into the through hole.

3. The limiting mechanism according to claim 2, characterized in that: A hollow groove is provided on the first mounting plate, and the push-pull rod includes a push-pull rod body and a boss located at the rear end of the push-pull rod, the boss is fixedly connected to or integrally formed with the push-pull rod body, the boss is placed at the bottom of the hollow groove, and the push-pull rod body passes through the hollow groove and extends into the through hole.

4. The limiting mechanism according to claim 3, characterized in that: The transverse cross section of the protruding column is a major arc, and a matching groove matching the shape of the protruding column is provided at the bottom of the hollow groove, and the protruding column is located in the matching groove.

5. The limiting mechanism according to claim 3, characterized in that: The push-pull rod also includes a square column located at the front end of the push-pull rod body, the through hole includes a square hole portion and a round hole portion, one end of the round hole portion extends to the lower end surface of the lower mold core, the other end of the round hole portion is connected to the round hole portion, and the other end of the round hole portion extends to the lower end surface of the mold.

6. The limiting mechanism according to any one of claims 1 to 5, characterized in that: The driving mechanism comprises a power device, and a telescopic rod of the power device is fixedly connected to the mounting plate.

7. The limiting mechanism according to claim 6, characterized in that: The power device is a linear motor or a cylinder or a hydraulic cylinder.

8. The limiting mechanism according to any one of claims 1 to 5, characterized in that: The limiting mechanism also includes a fixing plate, which is located at the lower side of the mounting plate and fixedly connected to the lower mold core via fastening bolts. A guide sleeve is provided on the mounting plate and is sleeved on the outer side of the fastening bolts.

9. A molding die, characterized in that: It comprises a lower die core, a mold and a limiting mechanism as described in any one of claims 1 to 8.

10. The molding die according to claim 9, characterized in that: The lower mold core comprises a lower mold core body and a lower insert embedded in the lower mold core body, the lower insert is provided with a lower cavity, the mold is placed in the lower cavity, and the through hole is opened on the lower insert.

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