Core-pulling mechanism for male mold having obliquely embedded copper nail

Abstract

A core-pulling mechanism for a male mold having an obliquely embedded copper nail. An oblique pulling mechanism (40) and an ejector mechanism (30) are provided in a mold core (12); before mold closing and injection molding, a reset assembly (32) is used to drive a sliding block (42) to horizontally move, so that a retractable core (41) extends into a product forming cavity, and a pre-embedded copper nail is conveniently mounted in the retractable core (41); during mold closing and injection molding, the ejector assembly (31) is used to drive the sliding block (42) to horizontally move, so that the retractable core (41) extends into the product forming cavity along an obliquely arranged connecting channel, and thus, the copper nail is pre-embedded in a product according to a required inclination angle after injection molding. Moreover, during product disassembling, the ejector assembly (31) is used to drive the sliding block (42) to horizontally move, so that the retractable core (41) retracts into the connecting channel, thereby achieving automatic separation of the retractable core (41) and the copper nail.

Description

Inclined copper nail male mold core pulling mechanism

[0001] This application claims priority to Chinese Patent Application No. 202410695699.1, filed with the Chinese Patent Office on May 31, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to a core-pulling mechanism for obliquely embedded copper nail molds, belonging to the field of plastic embedded nail technology. Background Technology

[0003] With the advancement of technology and the development of industrialization, the application range of plastic products is becoming increasingly wide, involving various fields such as automobile manufacturing, shipbuilding, and aerospace. In these fields, plastic products often require the embedding of copper nails or other metal nails for connection and fixation.

[0004] Traditionally, plastic products are injection molded first, followed by the installation of individual brass studs. This method suffers from low production efficiency and poor stability of the brass studs. Some high-precision plastic products use manual in-mold stud installation before injection molding. While this improves the installation quality of the brass studs, it results in even lower production efficiency, higher labor costs, and is unsuitable for large-scale industrial assembly line production. Furthermore, manual in-mold stud installation cannot meet the stud requirements of products with tilted angles. Summary of the Invention

[0005] This application provides a core-pulling mechanism for inclined copper nail molds, which can realize the embedding of nails at an inclined angle during the injection molding process, thereby improving production efficiency and adapting to large-scale assembly line production.

[0006] This application provides a core-pulling mechanism for obliquely embedded copper nail male molds, the mechanism comprising:

[0007] The mold core includes a female mold core and a male mold core that are vertically joined together. A molding cavity is formed between the female mold core and the male mold core. A receiving cavity is provided inside the male mold core. A connecting channel is obliquely provided between the receiving cavity and the molding cavity.

[0008] The oblique pulling mechanism includes a core pulling mold and a slider. The first end of the core pulling mold is inserted into the connecting channel. The slider is slidably connected to the second end of the core pulling mold. The slider is located in the receiving cavity and is slidably connected to the male mold core in the horizontal direction. An actuation groove is obliquely provided on the slider and is slidably connected to the end of the core pulling mold.

[0009] The ejection mechanism includes an ejection assembly and a reset assembly disposed within the mold core. The ejection assembly is configured to push the slider to move horizontally to drive the core-pulling mold core into the molding cavity or retract the connecting channel. The reset assembly is configured to push the slider to move horizontally to drive the core-pulling mold core into the molding cavity.

[0010] In some embodiments, a positioning structure is provided between the slider and the male mold core in the horizontal sliding direction, and the positioning structure can lock or unlock the slider when the core-pulling mold core extends into the molding cavity or retracts the connecting channel under the action of the ejection component, or lock the slider when the core-pulling mold core extends into the molding cavity under the action of the reset component.

[0011] In some embodiments, the positioning structure includes a snap-fit ​​positioning bead and two positioning slots, one of which is disposed on the slider and the other of which is disposed on the male mold core.

[0012] In some embodiments, the ejection assembly is a lever, which is vertically disposed within the female mold core. A transmission structure is provided between the lever and the slider. The transmission structure includes an obliquely disposed groove and a spring pin. One of the groove and the spring pin is disposed on the lever, and the other is disposed on the slider. The lever moves vertically to drive the spring pin into the groove and slide within the groove, or the spring pin separates from the groove. The spring pin slides within the groove to drive the slider to move horizontally, thereby driving the core-pulling mold core to extend into the molding cavity or retract into the connecting channel.

[0013] In some embodiments, the spring pin is disposed on the side of the slider, the spring pin including a connecting post inserted into the slider and an elastic member connecting the connecting post and the slider, the connecting post extending out of the slider and slidably connected to the groove.

[0014] In some embodiments, the groove is disposed at the end of the lever near the slider, and an inner tangent is provided between the end of the slider and the groove facing the slider.

[0015] In some embodiments, the reset component is a reset rod and is disposed within the male mold core. The reset rod pushes the slider to move horizontally so that the core-pulling mold core extends into the molding cavity.

[0016] In some embodiments, the reset rod is disposed vertically within the male mold core, and an actuation structure is provided between the reset rod and the slider. The actuation structure includes a first actuation surface and a second actuation surface respectively inclinedly disposed on the reset rod and the slider.

[0017] In some embodiments, a connecting block is provided in the accommodating cavity, and a sliding connection structure is formed between the connecting block and the slider. The sliding connection structure includes a convex protrusion and a convex groove with adapted shapes. One of the convex protrusion and the convex groove is provided on the connecting block, and the other is provided on the slider.

[0018] In some embodiments, the core-pulling core is a rod-shaped structure having at least two rods of unequal diameters, and one end of the rod with the largest diameter of the two rods is connected to the slider. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the obliquely embedded copper nail male mold core-pulling mechanism according to an embodiment of this application;

[0020] Figure 2 is a schematic diagram of the internal structure of the inclined copper nail core-pulling mechanism in Figure 1.

[0021] Figure 3 is an exploded view of the internal structure of the core-pulling mechanism for the obliquely embedded copper nail in Figure 2.

[0022] Figure 4 is a schematic diagram of the slider shown in Figure 3 from another perspective;

[0023] Figure 5 is an internal perspective view of the inclined copper nail male mold core-pulling mechanism shown in an embodiment of this application.

[0024] Reference numerals: 1. Female mold core; 2. Male mold core; 10. Mold core; 12. Molding cavity; 13. Connecting channel; 14. Receiving cavity; 30. Ejection mechanism; 31. Ejection assembly; 32. Reset assembly; 40. Angled pulling mechanism; 41. Core pulling mold core; 42. Slider; 43. Connecting block; 311. Slide groove; 312. Inner cleavage; 321. Upper ejector plate; 322. Lower ejector plate; 410. Sliding connection structure; 420. Spring pin; 421. Actuation groove; 422. Connecting pillar; 423. Elastic element; 424. Convex slide groove; 431. Convex protrusion; 432. Positioning bead; 433. Positioning groove; 441. First actuation surface; 442. Second actuation surface. Detailed Implementation

[0025] The specific implementation of this application will now be described in conjunction with the accompanying drawings and embodiments.

[0026] In the description of this application, 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. These terms are used for the convenience of describing this application and for simplification, 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the meaning of the above terms in this application as appropriate.

[0028] Please refer to Figures 1 to 5. An embodiment of this application shows a core-pulling mechanism for a male mold with obliquely embedded copper nails. The core-pulling mechanism for a male mold with obliquely embedded copper nails includes a mold core 10, an oblique pulling mechanism 40, and an ejection mechanism 30.

[0029] The mold core 10 includes a female mold core 1 and a male mold core 2 vertically joined together, forming a molding cavity 12 between them. A receiving cavity 14 is provided within the male mold core 2, and a connecting channel 13 is obliquely arranged between the receiving cavity 14 and the molding cavity 12. The inclination angle of the connecting channel 13 corresponds to the inclination angle of the pre-embedded copper pins in the product. Part of the molding cavity 12 is located on the female mold core 1, and the other part is located on the male mold core 2. The female mold core 1 and the male mold core 2 are joined together to form a complete molding cavity. The mold core 10 is provided with an injection hole and an ejector pin hole. The injection hole connects to the molding cavity 12 and is externally connected to a glue supply device, while the ejector pin hole contains an ejector pin for pushing the product, facilitating product disassembly.

[0030] The inclined core-pulling mechanism 40 includes a core-pulling mold 41 and a slider 42. The first end of the core-pulling mold 41 is inserted into the connecting channel 13. The slider 42 is slidably connected to the second end of the core-pulling mold 41. The slider 42 is located within the receiving cavity 14 and is slidably connected to the male mold core 2 in the horizontal direction. An actuating groove 421 is obliquely provided on the slider 42 and slidably connected to the end of the core-pulling mold 41. The cross-section of the actuating groove 421 is "╬". In the horizontal direction, the actuating groove 421 includes a higher head end and a lower tail end. The end of the core-pulling mold 41 is a semi-circular connecting part. A connecting shaft is laterally connected to the center of the connecting part. The connecting shaft is movably connected to the connecting part, and both ends of the connecting shaft extend out of the sides of the connecting part. The connecting shaft is slidably connected within the actuating groove 421. When the slider 42 moves horizontally back and forth, the connecting shaft moves back and forth between the head end and the end end of the actuation groove 421, thereby pushing the core-pulling core 41 to extend into the molding cavity 12 along the connecting channel 13 or retract into the connecting channel 13.

[0031] The core-pulling core 41 is a rod-shaped structure with at least two segments of unequal diameter, and one end of the segment with the largest diameter is connected to the slider 42. For example, the core-pulling core 41 is a rod-shaped structure with at least two segments of different diameters, and the connecting channel 13 is adapted to the shape of the core-pulling core 41. The segment with the larger diameter is configured to movably connect to the slider 42 to resist deformation caused by the slider 42 pressing against the oblique sliding hole when the core-pulling core 41 moves along the oblique sliding hole, thereby improving the service life of the core-pulling core 41. The segment with the smaller diameter is positioned close to the forming cavity 12 for easy loading of copper nails. In other embodiments, the core-pulling core 41 can also be of other shapes, as long as the above effects are achieved.

[0032] In some embodiments, the oblique sliding hole may be an actuation groove 421.

[0033] The ejection mechanism 30 includes an ejection assembly 31 and a reset assembly 32 disposed within the mold core 10. The ejection assembly 31 is configured to push the slider 42 to move horizontally, thereby driving the core-pulling mold 41 to extend into the molding cavity 12 or retract into the connecting channel 13. The reset assembly 32 is configured to push the slider 42 to move horizontally, thereby driving the core-pulling mold 41 to extend into the molding cavity 12.

[0034] In this embodiment, a positioning structure is provided between the slider 42 and the male mold core 2 in the horizontal sliding direction. This structure can lock or unlock the slider 42 when the core-pulling mold core 41 extends into the molding cavity 12 or retracts into the connecting channel 13 under the action of the ejector assembly 31, or lock the slider 42 when the core-pulling mold core 41 extends into the molding cavity 12 under the action of the reset assembly 32. That is, the positioning structure allows the slider 42 to be unlocked when it moves horizontally under external force, or locked when the external force is removed after reaching a designated position. This facilitates adjusting the position of the slider 42, and when the slider 42 needs to remain stationary at a designated position, no external force is required to maintain the set state, making it efficient and labor-saving.

[0035] The positioning structure includes a positioning bead 432 and two positioning grooves 433 (see Figure 4). One of the positioning bead 432 and the two positioning grooves 433 is disposed on the slider 42, and the other of the positioning bead 432 and the two positioning grooves 433 is disposed on the male mold core 2. In this embodiment, the end of the positioning bead 432 is a spherical protrusion, and the positioning groove 433 is a spherical groove. The positioning bead 432 is disposed on the male mold core 2 and is located on the sliding surface where the slider 42 and the male mold core 2 slide relative to each other. The two positioning grooves 433 are spaced apart on the slider 42. When one positioning groove 433 engages with the positioning bead 432, the core-pulling core 41 extends into the molding cavity 12 to its maximum extension length. When the other positioning groove 433 engages with the positioning bead 432, the core-pulling core 41 retracts into the connecting channel 13 and the end face of the core-pulling core 41 is flush with the surface of the molding cavity 12. Under external force, the positioning bead 432 switches between the two positioning grooves 433, thereby locking the core-pulling core 41 after it extends into the molding cavity 12 or retracts into the connecting channel 13. In other embodiments, the positioning bead 432 can also be disposed on the slider 42. Furthermore, the end face of the positioning bead 432 can be made of an elastic material, reducing the difficulty of horizontally driving the slider 42 to move through deformation. The positioning bead 432 can also be an elastic positioning bead 432, as long as it achieves the above-mentioned effect.

[0036] The ejector assembly 31 is a lever, vertically positioned within the female mold core 1. A transmission structure exists between the lever and the slider 42, comprising an obliquely positioned groove 311 and a spring pin 420. One of the groove 311 and the spring pin 420 is mounted on the lever, and the other on the slider 42. The lever moves vertically to drive the spring pin 420 into the groove 311 and slide within it, or to separate the spring pin 420 from the groove 311. The spring pin 420 slides within the groove 311, causing the slider 42 to move horizontally, thereby driving the core-pulling mold core 41 to extend into the molding cavity 12 or retract into the connecting channel 13. In this embodiment, the slide groove 311 is disposed on the lever, and the male mold core 2 is provided with an ejection channel. When the mold is closed, the lever is inserted into the receiving cavity 14 along the ejection channel and contacts the spring pin 420, causing the spring pin 420 to enter the slide groove 311. This drives the slider 42 to move, thereby causing the core-pulling mold core 41 to extend into the molding cavity 12. This achieves the simultaneous insertion of the core-pulling mold core 41 into the molding cavity 12 when the mold is closed, simplifying the operation process, reducing the involvement of other driving components, and reducing energy consumption. In other embodiments, the slide groove 311 can also be disposed on the slider 42.

[0037] In this embodiment, the spring pin 420 is disposed on the side of the slider 42. The spring pin 420 includes a connecting post 422 inserted into the slider 42 and an elastic element 423 connecting the connecting post 422 and the slider 42. The connecting post 422 extends out of the slider 42 and is slidably connected to the slide groove 311. The elastic element 423 is a spring. By pressing the connecting post 422, the elastic element 423 is compressed, so that the connecting post 422 can retract into the slider 42. This facilitates the spring pin 420 to re-enter the slide groove 311 after separating from it. At the same time, when the spring pin 420 enters the slide groove 311, the elastic element 423 drives the connecting post 422 to extend into the slide groove 311. This arrangement facilitates the separation or slidable connection of the lever with the slider 42 during mold closing and opening. In other embodiments, the spring pin 420 can also have other structures, as long as the above effects are achieved.

[0038] In this embodiment, the slide groove 311 is provided at the end of the lever near the slider 42, and an inner tangent surface 312 is provided between the end of the slider 42 and the slide groove 311 facing the slider 42. For example, the end of the inner tangent surface 312 near the opening of the slide groove 311 is located on the side near the slider 42. With this configuration, when the male mold core 2 and the female mold core 1 are closed, when the lever is inserted into the receiving cavity 14, the elastic element 423 on the spring pin 420 is gradually compressed as the lever moves down until the connecting post 422 enters the slide groove 311, reducing the difficulty for the spring pin 420 to enter the slide groove 311 and avoiding structural damage caused by rigid collision.

[0039] In this embodiment, the reset component 32 is a reset rod, which is disposed inside the male mold core 2. The reset rod pushes the slider 42 to move horizontally so that the core-pulling mold core 41 extends into the molding cavity 12. After the mold is opened, the reset rod drives the slider 42 to move so that the core-pulling mold core 41 extends into the molding cavity 12, which facilitates the manual or robotic arm to fill the end of the core-pulling mold core 41 with copper nails.

[0040] In this embodiment, the reset rod is vertically disposed within the male mold core 2, and an actuation structure is provided between the reset rod and the slider 42. The actuation structure includes a first actuation surface 441 and a second actuation surface 442 respectively inclinedly disposed on the reset rod and the slider 42. Thus, by setting the driving direction of the reset rod to be completely opposite to the driving direction of the female mold core 1, mutual interference can be avoided with maximum efficiency. In other embodiments, the reset rod can also be disposed in other directions, as long as it does not interfere with other structures.

[0041] The reset rod is an L-shaped rod, and a ejector plate is provided between the L-shaped rod and the driving component. The ejector plate includes an upper ejector plate 321 and a lower ejector plate 322. The upper ejector plate 321 has an L-shaped through slot in the vertical direction, and the L-shaped rod is inserted into the L-shaped through slot, with the bottom of the L-shaped rod abutting against the lower ejector plate 322. When the driving component drives the ejector plate to rise, the lower ejector plate 322 pushes the bottom of the L-shaped rod to push the L-shaped rod upward. When the driving component drives the ejector plate to fall, the upper ejector plate 321 pushes the L-shaped rod to drive the L-shaped rod downward, thereby achieving precise control of the L-shaped rod and avoiding interference with other structures.

[0042] In some embodiments, the driving component can be a motor that drives the ejector plate to move, and the motor can provide strong power to ensure the smooth operation of the ejector plate; the driving component can also be a relay, and the relay drives the ejector plate by controlling the on and off of the control circuit; the driving component can also be other similar devices or components, which also have the function of driving the ejector plate to move.

[0043] A connecting block 43 is provided within the accommodating cavity 14. A sliding connection structure 410 is formed between the connecting block 43 and the slider 42. The positioning structure for the slider 42 and the male mold core 2 is also formed between the slider 42 and the connecting block 43. The sliding connection structure 410 includes a shaped convex protrusion 431 and a convex groove 424. One of the convex protrusion 431 and the convex groove 424 is provided on the connecting block 43, and the other is provided on the slider 42. In this embodiment, the connecting block 43 is fixedly connected to the male mold core 2, the convex protrusion 431 is provided on the connecting block 43, and the convex groove 424 is formed on the slider 42. The convex protrusion 431 and the convex groove 424 are slidably connected, facilitating relative sliding between the two and guiding the sliding direction. In other embodiments, the convex protrusion 431 is provided on the end face of the slider 42, and the convex groove 424 is formed on the connecting block 43.

[0044] In some embodiments, this application provides a slanted pulling mechanism 40 and an ejection mechanism 30 within the mold core 10. Before mold closing and injection molding, the reset component 32 drives the slider 42 to move horizontally so that the core-pulling mold core 41 extends into the product molding cavity 12, facilitating the loading of pre-embedded copper nails into the core-pulling mold core 41. During mold closing and injection molding, the ejection component 31 drives the slider 42 to move horizontally so that the core-pulling mold core 41 extends into the product molding cavity 12 according to the slanted connecting channel 13. This achieves the pre-embedding of copper nails into the product at the required tilt angle after injection molding. Simultaneously, during product disassembly, the ejection component 31 drives the slider 42 to move horizontally so that the core-pulling mold core 41 retracts into the connecting channel 13, achieving automatic separation of the core-pulling mold core 41 from the copper nails. This method is simple to operate, improves production efficiency, and is suitable for large-scale assembly line production.

Claims

1. A core-pulling mechanism for a male die of an inclined copper rivet, comprising: a die core including a female die core and a male die core which are vertically butted, a forming cavity being formed between the female die core and the male die core, and a receiving cavity being provided in the male die core, a connecting channel being provided obliquely between the receiving cavity and the forming cavity; an oblique core-pulling mechanism including a core-pulling core and a slider, the first end of the core-pulling core being inserted into the connecting channel, the slider being slidingly connected to the second end of the core-pulling core, the slider being located in the receiving cavity and being slidingly connected to the male die core in the horizontal direction, an actuating groove being provided obliquely on the slider and being slidingly connected to the end of the core-pulling core; an ejection mechanism including an ejection assembly and a reset assembly which are provided in the die core, the ejection assembly being configured to push the slider to move in the horizontal direction to drive the core-pulling core to extend into the forming cavity or to retract into the connecting channel, the reset assembly being configured to push the slider to move in the horizontal direction to drive the core-pulling core to extend into the forming cavity.

2. The undercutting mechanism for a male die of a copper rivet as recited in claim 1, wherein, In the horizontal sliding direction, a positioning structure is provided between the slider and the male die core, and the positioning structure can lock or unlock the slider when the core-pulling core extends into the forming cavity or retracts into the connecting channel under the action of the ejection assembly, or the positioning structure can lock the slider when the core-pulling core extends into the forming cavity under the action of the reset assembly.

3. The undercutting mechanism for a male die of a copper rivet as recited in claim 2, wherein, The positioning structure includes a positioning bead and two positioning grooves which are in clamping cooperation, one of the positioning bead and the two positioning grooves being provided on the slider, and the other being provided on the male die core.

4. The undercutting copper rivet male die core mechanism of claim 1 wherein, The ejection assembly is a lever which is provided in the female die core in the vertical direction, a transmission structure being provided between the lever and the slider, the transmission structure including a sliding groove and a spring pin which are provided obliquely, one of the sliding groove and the spring pin being provided on the lever, and the other being provided on the slider, the lever being moved in the vertical direction to drive the spring pin to enter the sliding groove and slide in the sliding groove or to separate from the sliding groove, the spring pin sliding in the sliding groove to drive the slider to move in the horizontal direction to drive the core-pulling core to extend into the forming cavity or to retract into the connecting channel.

5. The undercutting mechanism for a male die for a copper anchor as claimed in claim 4, wherein, The spring pin is provided on the side of the slider, the spring pin including a connecting column which is inserted into the slider and an elastic member which is connected between the connecting column and the slider, the connecting column being partially extended out of the slider and being slidingly connected to the sliding groove.

6. The undercutting mechanism for a male die for a copper anchor as set forth in claim 5, wherein, The sliding groove is provided on the end of the lever which is close to the slider, and an inner tangent surface is provided between the end of the slider and the sliding groove and faces the slider.

7. The undercutting mechanism for a male die for a copper anchor as claimed in claim 6, wherein, The reset assembly is a reset lever which is provided in the male die core, the reset lever pushing the slider to move in the horizontal direction to drive the core-pulling core to extend into the forming cavity.

8. The undercutting mechanism for a male die for a copper anchor as claimed in claim 7, wherein, The reset lever is provided in the male die core in the vertical direction, an actuating structure being provided between the reset lever and the slider, the actuating structure including a first actuating surface and a second actuating surface which are respectively provided obliquely on the reset lever and the slider.

9. The undercutting copper rivet male die core mechanism of claim 1 wherein, The accommodating cavity is provided with a connecting block, and a sliding connection structure is formed between the connecting block and the sliding block, the sliding connection structure comprises a convex protrusion and a convex sliding groove which are matched in shape, and one of the convex protrusion and the convex sliding groove is arranged on the connecting block, and the other is arranged on the sliding block.

10. The undercutting mechanism for a male die for a copper rivet as defined in claim 1 wherein, The core-pulling core is a rod-shaped structure with at least two sections of rod bodies with different diameters, and one end of the section of rod body with the largest diameter among the at least two sections of rod bodies is connected with the sliding block.

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