Internal thread integrated forming and demolding mechanism

Abstract

The utility model relates to the field of internal thread forming, and discloses an internal thread integral forming and demolding mechanism which comprises a fixed mold, a movable mold, a forming cavity arranged between the fixed mold and the movable mold and used for forming a product when the fixed mold and the movable mold are closed, and a mold core used for forming an internal thread of the product in the forming cavity, a demolding structure for driving the mold core to be separated from the inner side of the product while rotating is arranged on the movable mold, the demolding structure comprises a driving rod and a driving mechanism, the driving rod is concentrically fixed to the end, away from the forming end, of the mold core, and the driving mechanism drives the driving rod to do reciprocating motion in the axial direction of the driving rod while rotating. And after the product is formed, the mold core can be driven by the arranged driving mechanism to be separated from the product, so that the probability of defective products of the formed product is reduced.

Description

Technical Field

[0001] This utility model relates to the field of internal thread forming, and in particular to an internal thread integral forming and demolding mechanism. Background Technology

[0002] Chinese Patent No. CN217414714U discloses a core for forming a cosmetic internal thread cap mold, including a mounting plate, a base plate arranged parallel below the mounting plate, and a support column connecting the mounting plate and the base plate. A vertical drive block is arranged above the mounting plate, and three first horizontal drive blocks and three second horizontal drive blocks are arranged on the outer surface of the vertical drive block. The three first horizontal drive blocks and three second horizontal drive blocks are arranged in a circular array around the vertical drive block. A hydraulic cylinder is arranged below the bottom to drive the vertical drive block to move vertically. The first horizontal drive blocks and the second horizontal drive blocks are respectively provided with sliding grooves near the vertical drive block, and the outer wall of the vertical drive block is provided with a slide rail that can slide within the sliding groove.

[0003] Since the core is composed of a vertical drive block, three first horizontal drive blocks, and three second horizontal drive blocks, gaps or misalignments in the threads are likely to exist at the joints after assembly. If there are gaps at the joints, there will be extra protrusions on the molded product, requiring additional protrusions to be made after the product is molded. If the threads are misaligned, the product will be scrapped. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies where the core is composed of a vertical drive block, three first transverse drive blocks, and three second transverse drive blocks, which leads to the presence of protrusions or the production of scrap products after molding. It provides an integrated internal thread molding and demolding mechanism.

[0005] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0006] An internal thread integral molding and demolding mechanism includes a fixed mold and a moving mold, a molding cavity between the fixed mold and the moving mold for molding a product when the two molds are closed, and a core for molding the internal thread of the product in the molding cavity. A demolding structure is provided on the moving mold to drive the core to rotate and eject from the inside of the product. The demolding structure includes a drive rod fixed concentrically to one end of the core away from the molding end and a drive mechanism that drives the drive rod to rotate and reciprocate along its own axis.

[0007] Using the above solution, the drive mechanism can drive the drive rod to rotate and move along its own axial direction. Since one end of the core is concentrically fixed on the drive rod, the core will gradually be ejected from the molding cavity when the drive mechanism drives the drive rod to rotate and move along its own axial direction. This achieves demolding between the core and the internal thread in the product. Since the internal thread in the product is integrally formed by the core, and after the product is molded, the drive mechanism can be used to drive the core out of the product, thereby reducing the probability of defective products after molding.

[0008] Preferably, the moving mold moves horizontally, and the driving mechanism includes a driving component that drives the driving rod to rotate and a mating component that lowers or rises as the moving mold opens or closes.

[0009] Preferably, the driving component includes a drive motor disposed on the moving mold below the drive rod, an active gear disposed on the output shaft of the drive motor, and a driven gear coaxially fixed to the outer wall of the drive rod and meshing with the active gear, wherein the length of the active gear is greater than the length of the core.

[0010] Using the above scheme, the drive motor can drive the active gear on the output shaft to rotate, and the active gear will drive the driven gear to rotate. Since the driven gear is set on the outer wall of the drive rod, when the driven gear rotates, it will drive the drive rod to rotate. While the drive rod is rotating, the drive rod will move downward due to its own weight. The set mating parts will provide movement space for the drive rod to descend and support the drive rod when it moves downward.

[0011] Preferably, the mating components include a support ring protruding from the outer wall of the drive rod, a support block whose one end abuts against the support ring and can move with the movement of the moving mold to support the drive rod, and a guide component that drives the support block to move obliquely upward or downward with the moving mold when the moving mold approaches or moves away from the fixed mold.

[0012] Using the above scheme, the guide component can drive the support block to move obliquely upward or downward on the moving mold when the moving mold is away from the fixed mold. When the moving mold is away from the fixed mold, the drive component drives the drive rod to rotate. At the same time as the drive component drives the drive rod to rotate, the guide component also drives the support block to move obliquely downward. At this time, the drive rod will move downward while rotating due to its own weight, thus disengaging from the product. When the moving mold is close to the fixed mold, the guide component will drive the support block to move obliquely upward. At this time, the support block will push the drive rod to move into the molding cavity. At this time, the core fixed on the drive rod will reset and insert into the molding cavity.

[0013] Preferably, the guiding component includes an inclined guide post protruding on the fixed mold, a through hole provided on the support block for the inclined guide post to pass through, and a waist-shaped guide groove provided on the moving mold for the inclined guide post to slide in when the moving mold approaches or moves away from the fixed mold, and the support block is embedded in the moving mold for guiding and sliding.

[0014] Using the above scheme, the inclined guide post set on the fixed mold can move in the waist-shaped guide groove on the moving mold when the moving mold approaches or moves away from the fixed mold. When the inclined guide post moves in the waist-shaped guide groove, it will drive the support block to slide on the moving mold, thereby realizing the upward or downward movement of the support block.

[0015] This utility model, by adopting the above technical solution, has significant technical effects: the driving mechanism can drive the driving rod to rotate while moving along its own axial direction. Since one end of the core is concentrically fixed on the driving rod, the core will gradually be ejected from the molding cavity when the driving mechanism drives the driving rod to rotate while moving along its own axial direction, thereby realizing the demolding between the core and the internal thread in the product. Since the internal thread in the product is integrally formed by the core, and after the product is molded, the driving mechanism can be used to drive the core out of the product, thereby reducing the probability of defective products after molding. Attached Figure Description

[0016] Figure 1 This is an isometric view of an internal thread integral forming and demolding mechanism in this embodiment;

[0017] Figure 2 This is an isometric view of the lower mold containing the product in this embodiment;

[0018] Figure 3 This is an isometric view of the lower mold without any product inside in this embodiment;

[0019] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 This is an isometric view of the moving module in this embodiment;

[0021] Figure 6 This is an isometric view of the lower mold in this embodiment;

[0022] Figure 7 This is an isometric view of the support block in this embodiment;

[0023] Figure 8 This is an isometric view of the support block and the fixing block in this embodiment.

[0024] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Fixed mold; 2. Moving mold; 3. Core; 4. Product; 5. Drive rod; 6. Molding cavity; 7. Drive motor; 8. Drive gear; 9. Driven gear; 10. Support ring; 11. Support block; 12. Angled guide post; 13. Through hole; 14. Waist-shaped guide groove; 15. Sliding groove; 16. Slider; 17. Fixing block; 18. Mounting block. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0026] A mechanism for integral molding and demolding of internal threads, reference Figures 1-6 The system includes a fixed mold 1 and a moving mold (not shown in the figure). A molding cavity 6 is provided between the fixed mold 1 and the moving mold to form the product 4 when the two are closed. The system also includes a core 3 for forming the internal thread of the product 4 in the molding cavity 6. A demolding structure is provided on the moving mold to drive the core 3 to rotate and eject from the product 4. The demolding structure includes a drive rod 5 that is concentrically fixed to one end of the core 3 away from the molding end and a drive mechanism that drives the drive rod 5 to rotate and reciprocate along its own axis. In this embodiment, a moving module 2 is provided inside the moving mold, and the molding cavity 6 inside the moving mold is located inside the moving module 2.

[0027] refer to Figures 2-4 The moving mold moves horizontally. The driving mechanism includes a driving component that drives the driving rod 5 to rotate and a cooperating component that lowers or rises with the opening or closing of the moving mold. The driving component includes a driving motor 7 disposed on the moving mold below the driving rod 5, an active gear 8 disposed on the output shaft of the driving motor 7, and a driven gear 9 coaxially fixed to the outer wall of the driving rod 5 and meshing with the active gear 8. The length of the active gear 8 is greater than the length of the core 3. In this embodiment, the driving motor 7 is disposed on the mounting block 18, and the driven gear 9 and the active gear 8 are both disposed on the mounting block 18. The mounting block 18 is fixedly disposed on the moving mold.

[0028] refer to Figures 1-3 The cooperating components include a support ring 10 protruding on the outer wall of the drive rod 5, a support block 11 whose one end abuts against the support ring 10 and can move with the movement of the moving mold to support the drive rod 5, and a guide component that drives the support block 11 to move obliquely upward or obliquely downward with the moving mold when the moving mold approaches or moves away from the fixed mold 1.

[0029] refer to Figures 1-3 , Figures 6-8The guiding component includes an inclined guide post 12 protruding from the fixed mold 1, a through hole 13 provided on the support block 11 through which the inclined guide post 12 passes, and a waist-shaped guide groove 14 provided on the moving mold for guiding the inclined guide post 12 to slide when the moving mold approaches or moves away from the fixed mold 1. The support block 11 is embedded in the moving mold for guiding and sliding. In this embodiment, the waist-shaped guide groove 14 is provided on the fixed block 17, and the fixed block 17 is fixedly provided on the moving mold. A slider 16 is provided on the support block 11 near the fixed block 17, and a sliding groove 15 is provided on the fixed block 17 for the slider 16 to slide therein.

[0030] Specific process: After the internal thread on product 4 is formed, the moving mold is moved away from the fixed mold 1. Simultaneously, the drive motor 7 is started. The drive motor 7 drives the driven gear 9 to rotate via the drive gear 8 on the output shaft. When the driven gear 9 rotates, it drives the drive rod 5 to rotate. When the drive rod 5 rotates, it drives the core 3 mounted on the drive rod 5 to rotate. As the moving mold moves away from the fixed mold 1, the inclined guide post 12 protruding from the fixed mold 1 moves within the waist-shaped guide groove 14 on the fixed block 17. When the inclined guide post 12 moves within the waist-shaped guide groove 14, it drives the support... The support block 11 moves on the fixed block 17, thus providing space for the drive rod 5 to descend. When the inclined guide post 12 moves downward, the drive rod 5 will move downward due to its own movement. At this time, the drive rod 5 will drive the core 3 to rotate out of the product 4, thereby realizing the demolding between the product 4 and the core 3. When the moving mold moves towards the fixed mold 1, the inclined guide post 12 will move in the waist-shaped guide groove 14. At this time, the inclined guide post 12 will drive the support block 11 to move upward. At this time, the support block 11 will push the drive rod 5 into the molding cavity 6 through the support ring 10 set on the outer wall of the drive rod 5, thereby realizing the reset of the core 3.

[0031] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An internal thread integral molding and demolding mechanism, comprising a fixed mold (1) and a moving mold, wherein a molding cavity (6) is provided between the fixed mold (1) and the moving mold for molding a product (4) when the two are closed, and further comprising a core (3) for molding the internal thread of the product (4) within the molding cavity (6), characterized in that: A demolding structure is provided on the moving mold to drive the core (3) to rotate and eject from the product (4). The demolding structure includes a drive rod (5) that is concentrically fixed to one end of the core (3) away from the molding end, and a drive mechanism that drives the drive rod (5) to rotate and reciprocate along its own axis.

2. The internal thread integral forming and demolding mechanism according to claim 1, characterized in that: The moving mold moves horizontally, and the driving mechanism includes a driving component that drives the driving rod (5) to rotate and a cooperating component that lowers or rises as the moving mold opens or closes.

3. The internal thread integral forming and demolding mechanism according to claim 2, characterized in that: The driving component includes a drive motor (7) disposed on the moving mold below the drive rod (5), an active gear (8) disposed on the output shaft of the drive motor (7), and a driven gear (9) coaxially fixed to the outer wall of the drive rod (5) and meshing with the active gear (8). The length of the active gear (8) is greater than the length of the core (3).

4. The internal thread integral forming and demolding mechanism according to claim 2, characterized in that: The mating components include a support ring (10) protruding from the outer wall of the drive rod (5), a support block (11) whose one end abuts against the support ring (10) and can move with the movement of the moving mold and support the drive rod (5), and a guide component that drives the support block (11) to move obliquely upward or obliquely downward with the moving mold when the moving mold approaches or moves away from the fixed mold (1).

5. The internal thread integral forming and demolding mechanism according to claim 4, characterized in that: The guiding component includes an inclined guide post (12) protruding on the fixed mold (1), a through hole (13) provided on the support block (11) through which the inclined guide post (12) passes, and a waist-shaped guide groove (14) provided on the moving mold for the inclined guide post (12) to slide in when the moving mold approaches or moves away from the fixed mold (1). The support block (11) is embedded in the moving mold for guiding and sliding.

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