Nut implanting mechanism facilitating demolding

Abstract

The application provides a nut implanting mechanism facilitating demolding, which is applied to an injection mold and comprises a lower mold core and an inclined guide column. The lower mold core is slidably connected with a sliding assembly. The inclined guide column passes through the sliding assembly and the lower mold core in sequence. The top of the sliding assembly is movably connected with a nut feeding piece, which is used for fixing a nut insert inside an injection product. A plurality of column grooves are parallelly arranged on the surface of the lower mold core. The column grooves are all connected with forming cavities. The end of the nut feeding piece away from the inclined guide column extends to the forming cavities. An abutting column is adaptively embedded in the column groove. The abutting column is fixedly connected with the lower mold core. The abutting column extends to the forming cavities and abuts against the nut insert. The sliding assembly is driven by the inclined guide column, and the abutting column and the fixed column are cooperatively used to realize the effects of accurate positioning and convenient demolding.

Description

Technical Field

[0001] This application relates to injection molding technology, specifically to a nut insertion mechanism that facilitates demolding. Background Technology

[0002] The nut insertion mechanism is an auxiliary device used in injection molds. Its basic principle is to pre-fix the nut insert in a specific position in the mold cavity before injection molding. After the molten plastic is injected into the mold and cooled and solidified, the nut is embedded in the product to form a plastic part with an internal thread structure. This allows for the simultaneous completion of injection molding and nut insertion, improving production efficiency, reducing subsequent assembly processes, and enhancing the structural strength and functionality of the product.

[0003] In existing technologies, the nut insert is prone to sticking or getting stuck to the mold during demolding, which makes demolding difficult and may even damage the product surface or internal structure. In addition, the nut is prone to displacement under injection pressure, which affects product quality and thread fit accuracy. Utility Model Content

[0004] In view of the aforementioned problems, this application is made to provide a nut insertion mechanism for easy demolding that overcomes or at least partially solves the aforementioned problems, applied to an injection mold, comprising a lower mold core and an inclined guide post, wherein the lower mold core is slidably connected to a sliding assembly, the inclined guide post passes sequentially through the sliding assembly and the lower mold core, and a nut feeder is movably connected to the top of the sliding assembly, the nut feeder being used to fix a nut insert inside the injection molded product; The surface of the lower mold core is provided with several parallel grooves, each groove being connected to a molding cavity. The end of the nut feeder away from the inclined guide post extends into the molding cavity. An abutment post is fitted into the groove, the abutment post is fixedly connected to the lower mold core, and the abutment post extends to the molding cavity and abuts against the nut insert.

[0005] Preferably, the sliding assembly includes a sliding seat, and a rectangular groove is formed at one end of the top of the sliding seat near the molding cavity, and the nut feeder is adapted to be snapped into the inside of the rectangular groove.

[0006] Preferably, the nut feeder includes a housing, which is adapted to be snapped into the interior of the rectangular groove. A plurality of fixing posts are arranged in parallel inside the housing, and the fixing posts are coaxially and correspondingly arranged with the abutment posts.

[0007] Preferably, one end of the fixing post is fixed to the inner wall of the housing, the other end of the fixing post extends through the housing and into the molding cavity, and the fixing post is adapted to be inserted into the interior of the nut insert.

[0008] Preferably, the bottom of the sliding seat is provided with a through groove, and a pin is inserted inside the through groove; the bottom of the housing is provided with a through hole. When the sliding seat slides to its limit position away from the molding cavity, the through groove communicates with the through hole.

[0009] Preferably, a plurality of guide posts are vertically fixed to the bottom inner wall of the rectangular groove, and the top of the guide posts protrudes through the housing.

[0010] Preferably, a limiting groove is formed on the side of the sliding seat away from the molding cavity, and a limiting post is fixedly connected to one side surface of the lower mold core; When the sliding seat slides to its limit position away from the molding cavity, the limiting post is engaged inside the limiting groove.

[0011] Preferably, guide blocks are fixedly connected to both ends of the sliding seat, the guide blocks are engaged with the inner wall of the lower mold core, and the sliding seat slides back and forth along the direction of the guide blocks.

[0012] This application has the following advantages: In the embodiments of this application, in contrast to the shortcomings of the prior art where "the nut insert is prone to sticking and jamming during demolding, and the positioning accuracy is insufficient, leading to displacement", this application provides a solution that achieves precise positioning and convenient demolding by driving a sliding component and an inclined guide post, combined with the synergistic action of an abutment post and a fixed post. Specifically, a nut insertion mechanism for easy demolding is applied to an injection mold, including a lower mold core and an inclined guide post. The lower mold core is slidably connected to a sliding component. The inclined guide post passes through the sliding component and the lower mold core in sequence. A nut feeder is movably connected to the top of the sliding component. The nut feeder is used to fix the nut insert inside the injection molded product. The surface of the lower mold core is provided with a plurality of parallel grooves, each groove communicating with a molding cavity. The end of the nut feeder away from the inclined guide post extends to the molding cavity. An abutment post is adapted to fit into the groove. The abutment post is fixedly connected to the lower mold core and extends to the molding cavity, abutting against the nut insert. By using inclined guide pillars to drive the sliding assembly to move the nut feeder, the problem of the nut insert easily sticking and getting stuck in the mold during demolding is solved, achieving the effects of automatic withdrawal during mold opening, smooth demolding, and avoiding product damage. By using a coaxial bidirectional limiting structure with a fixing pillar inserted into the nut insert and an abutting pillar abutting against the end face of the nut insert in the molding cavity, the problems of insufficient nut positioning accuracy and easy displacement under injection pressure are solved, achieving the effects of stable nut insert position and high thread fit accuracy during injection molding. Attached Figure Description

[0013] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of a nut insertion mechanism for easy demolding provided in one embodiment of this application; Figure 2 This is an embodiment provided by this application. Figure 1 A schematic diagram of the local structure of region A; Figure 3 This is a schematic diagram of the lower mold core of a nut insertion mechanism for easy demolding provided in an embodiment of this application in the mold; Figure 4 This is a schematic diagram of a sliding component of a nut insertion mechanism for easy demolding according to an embodiment of this application; Figure 5 This is another schematic diagram of the sliding component of a nut insertion mechanism for easy demolding provided in an embodiment of this application; The reference numerals in the accompanying drawings are as follows: 100. Lower mold core; 110. Limiting post; 200. Angled guide post; 300. Sliding assembly; 310. Sliding seat; 311. Through groove; 312. Ejector pin; 313. Limiting groove; 314. Guide block; 320. Rectangular groove; 321. Guide post; 400. Nut feeder; 410. Housing; 420. Fixing post; 500. Nut insert; 600. Post groove; 700. Molding cavity; 800. Abutment post. Detailed Implementation

[0015] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0016] The inventors discovered through analysis of existing technology that the nut insert 500 is prone to sticking or getting stuck with the mold during demolding, which makes demolding difficult and may even damage the surface or internal structure of the product. Furthermore, the nut is prone to shifting under injection pressure, affecting product quality and thread fit accuracy.

[0017] Reference Figure 1-2This application illustrates a nut insertion mechanism for easy demolding, applied to an injection mold, comprising a lower mold core 100 and an inclined guide post 200. The lower mold core 100 is slidably connected to a sliding assembly 300. The bottom end of the inclined guide post 200 passes through the sliding assembly 300 and the lower mold core 100 in sequence. The top of the sliding assembly 300 is movably connected to a nut feeder 400, which is used to fix a nut insert 500 inside the injection molded product. The surface of the lower mold core 100 is provided with a plurality of parallel grooves 600, each groove 600 being connected to a molding cavity 700, and the end of the nut feeder 400 away from the inclined guide post 200 extends to the molding cavity 700. An abutment post 800 is fitted into the groove 600. The abutment post 800 is fixedly connected to the lower mold core 100. The abutment post 800 extends to the molding cavity 700 and abuts against the nut insert 500.

[0018] In the embodiments of this application, in contrast to the shortcomings of the prior art where "the nut insert 500 is prone to sticking and jamming during demolding, and insufficient positioning accuracy leads to displacement," this application provides a solution that achieves precise positioning and convenient demolding by driving the sliding component 300 and the inclined guide post 200, and by cooperating with the abutment post 800 and the fixed post 420. Specifically, it is a nut insertion mechanism for easy demolding, applied to an injection mold, including a lower mold core 100 and an inclined guide post 200. The lower mold core 100 is slidably connected to the sliding component 300, and the bottom end of the inclined guide post 200 passes through the sliding component 300 and the lower mold core in sequence. 100, a nut feeder 400 is movably connected to the top of the sliding assembly 300, the nut feeder 400 is used to fix the nut insert 500 inside the injection molded product; a plurality of column grooves 600 are parallel to each other on the surface of the lower mold core 100, each column groove 600 is connected to a molding cavity 700, and one end of the nut feeder 400 away from the inclined guide post 200 extends to the molding cavity 700; an abutment post 800 is adapted to be fitted in the column groove 600, the abutment post 800 is fixedly connected to the lower mold core 100, the abutment post 800 extends to the molding cavity 700 and abuts against the nut insert 500. The inclined guide post 200 drives the sliding component 300 to move the nut feeder 400, which solves the problem of the nut insert 500 easily sticking and getting stuck with the mold during demolding. It achieves the effect of automatic withdrawal when the mold is opened, smooth demolding, and avoidance of product damage. The coaxial bidirectional limiting structure, in which the fixing post 420 is inserted into the nut insert 500 and the abutting post 800 abuts against the end face of the nut insert 500 in the molding cavity 700, solves the problem of insufficient nut positioning accuracy and easy displacement under injection pressure. It achieves the effect of stable position of nut insert 500 and high thread fit accuracy during injection.

[0019] The following will further describe a nut insertion mechanism that facilitates demolding in this exemplary embodiment.

[0020] Reference Figure 3-4 In one embodiment of this application, the specific features of the sliding component 300 can be further described in conjunction with the following description.

[0021] The sliding assembly 300 includes a sliding seat 310, and a rectangular groove 320 is provided at the top of the sliding seat 310 near the molding cavity 700. The nut feeder 400 is adapted to be snapped into the inside of the rectangular groove 320.

[0022] It should be noted that the rectangular groove 320, as a standard mounting base, is characterized by providing a precise positioning and accommodating space. The nut feeder 400 is fixed in the rectangular groove 320 by a snap-fit ​​mechanism, enabling quick and accurate positioning and convenient assembly / disassembly between the nut feeder 400 and the sliding seat 310.

[0023] Reference Figure 2-4 In one embodiment of this application, the nut feeder 400 includes a housing 410, which is adapted to be snapped into the interior of the rectangular groove 320. A plurality of fixing posts 420 are arranged in parallel inside the housing 410, and the fixing posts 420 are coaxially and correspondingly arranged with the abutment posts 800.

[0024] It should be noted that the housing 410, as the main load-bearing structure, is characterized by the integration of multiple fixing posts 420 internally. These fixing posts 420 are coaxially aligned with the abutment posts 800 on the lower mold core 100, forming the basis for bidirectional positioning of the nut insert 500. The fixing posts 420 are inserted into the inner hole of the nut insert 500 for radial positioning, while the abutment posts 800 abut against the end face of the nut insert 500 from the other end for axial limiting. This coaxial alignment ensures that the nut can resist melt pressure during injection molding, preventing it from shifting or floating, thereby guaranteeing the thread fit accuracy of the product.

[0025] Reference Figure 4-5 In one embodiment of this application, one end of the fixing post 420 is fixed to the inner wall of the housing 410, the other end of the fixing post 420 extends out of the housing 410 and into the molding cavity 700, and the fixing post 420 is adapted to be inserted into the interior of the nut insert 500.

[0026] It should be noted that one end of the fixing post 420 is fixed to the housing 410, while the other end, as a free end, is precisely inserted into the threaded bottom hole of the nut insert 500, thus achieving pre-positioning of the nut insert 500 and ensuring it is stably held in the designed position before injection molding. When molten plastic is injected into the molding cavity 700, the nut insert 500 is supported and constrained by the fixing post 420, effectively preventing displacement or tilting caused by plastic impact and ensuring the accuracy of the nut position in the final product.

[0027] Reference Figure 5 In one embodiment of this application, the bottom of the sliding seat 310 is provided with a through groove 311, and a pin 312 is inserted inside the through groove 311; the bottom of the housing 410 is provided with a through hole. When the sliding seat 310 slides to its limit position away from the molding cavity 700, the through groove 311 communicates with the through hole.

[0028] It should be noted that the structural feature here is the inclusion of an ejection channel consisting of a through groove 311, an ejector pin 312, and a through hole in the housing 410. The principle is as follows: During mold opening, the sliding seat 310 retracts under the drive of the inclined guide post 200. When it slides to its limit position, the through groove 311 aligns with the through hole in the housing 410. At this point, if the ejector pin 312 is driven (usually controlled by the mold ejection system), it can pass through this channel and act on the product or nut feeder 400, assisting in ejecting the molded product and further enhancing the reliability of demolding.

[0029] Reference Figure 4 In one embodiment of this application, a plurality of guide posts 321 are vertically fixed to the bottom inner wall of the rectangular groove 320, and the top of the guide posts 321 protrudes through the housing 410.

[0030] It should be noted that the guide post 321 is vertically fixed to the bottom of the rectangular groove 320 and extends upward through the housing 410 of the nut feeder 400. Its working principle is as follows: on the one hand, when installing the nut feeder 400, the guide post 321 plays a guiding role to ensure that it can be accurately and smoothly put into or pushed out of the rectangular groove 320; on the other hand, it restricts the horizontal movement of the housing 410, enhances the stability of the connection, and can also serve as an anti-misinstallation structure to ensure the unique correctness of the installation direction of the feeder.

[0031] Reference Figure 3 and Figure 5 In one embodiment of this application, a limiting groove 313 is provided on the side of the sliding seat 310 away from the molding cavity 700, and a limiting post 110 is fixedly connected to one side surface of the lower mold core 100. When the sliding seat 310 slides to its limit position away from the molding cavity 700, the limiting post 110 is fitted into the inside of the limiting groove 313.

[0032] It should be noted that during the mold opening process, the sliding seat 310 retracts, and when it reaches the predetermined end point of the stroke, the limiting post 110 is precisely embedded in the limiting groove 313. This mechanical hard limiting method can precisely control the retraction distance of the sliding component 300, preventing it from retracting excessively and leaving the working position or interfering with other parts of the mold, thus ensuring the reliability of the mechanism's movement and the repeatability of the positioning accuracy.

[0033] Reference Figure 4 In one embodiment of this application, guide blocks 314 are fixedly connected to both ends of the sliding seat 310. The guide blocks 314 are engaged with the inner wall of the lower mold core 100, and the sliding seat 310 slides back and forth along the direction of the guide blocks 314.

[0034] It should be noted that the guide block 314, as a connecting and guiding component between the sliding seat 310 and the lower mold core 100, is fixed on both sides of the sliding seat 310 and forms a snap-fit ​​engagement with the guide groove (not shown in the figure) on the inner wall of the lower mold core 100. This connection method ensures that the sliding seat 310 can only slide smoothly and linearly along the direction determined by the guide block 314, avoiding jamming or deviation during the movement, and ensuring the accuracy of the movement trajectory driven by the inclined guide post 200, thereby making the nut insertion and demolding actions more reliable.

[0035] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0036] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0037] The above provides a detailed description of the nut insertion mechanism for easy demolding provided in this application. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A nut insertion mechanism for easy demolding, applied to injection molds, characterized in that: It includes a lower mold core and an inclined guide post. The lower mold core is slidably connected to a sliding assembly. The inclined guide post passes through the sliding assembly and the lower mold core in sequence. A nut feeder is movably connected to the top of the sliding assembly. The nut feeder is used to fix the nut insert inside the injection molded product. The surface of the lower mold core is provided with several parallel grooves, each groove being connected to a molding cavity. The end of the nut feeder away from the inclined guide post extends into the molding cavity. An abutment post is fitted into the groove, the abutment post is fixedly connected to the lower mold core, and the abutment post extends to the molding cavity and abuts against the nut insert.

2. The nut insertion mechanism for easy demolding according to claim 1, characterized in that: The sliding assembly includes a sliding seat, and a rectangular groove is provided at one end of the top of the sliding seat near the molding cavity. The nut feeder is adapted to snap into the inside of the rectangular groove.

3. The nut insertion mechanism for easy demolding according to claim 2, characterized in that: The nut feeder includes a housing, which is adapted to snap into the interior of the rectangular groove. Several fixing posts are arranged in parallel inside the housing, and the fixing posts are coaxially and correspondingly arranged with the abutment posts.

4. The nut insertion mechanism for easy demolding according to claim 3, characterized in that: One end of the fixing post is fixed to the inner wall of the housing, and the other end of the fixing post extends through the housing and into the molding cavity, and the fixing post is adapted to be inserted into the interior of the nut insert.

5. The nut insertion mechanism for easy demolding according to claim 3, characterized in that: The bottom of the sliding seat is provided with a through groove, and a pin is inserted through the through groove; the bottom of the housing is provided with a through hole. When the sliding seat slides to its limit position away from the molding cavity, the through groove communicates with the through hole.

6. The nut insertion mechanism for easy demolding according to claim 3, characterized in that: Several guide posts are vertically fixed to the bottom inner wall of the rectangular groove, and the top of the guide posts protrudes through the housing.

7. The nut insertion mechanism for easy demolding according to claim 2, characterized in that: A limiting groove is provided on the side of the sliding seat away from the molding cavity, and a limiting post is fixedly connected to one side surface of the lower mold core; When the sliding seat slides to its limit position away from the molding cavity, the limiting post is engaged inside the limiting groove.

8. The nut insertion mechanism for easy demolding according to claim 2, characterized in that: Guide blocks are fixedly connected to both ends of the sliding seat. The guide blocks are engaged with the inner wall of the lower mold core, and the sliding seat slides back and forth along the direction of the guide blocks.

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