A diagonal core-pulling structure

Abstract

The application relates to the technical field of mold structure, in particular to a diagonal core-pulling structure which comprises a connecting seat, a driving piece, a first gear rack, a second gear rack and a mold core piece. A rotating cavity is arranged in the connecting seat, and a rotating gear is rotatably connected in the cavity; the driving piece is in transmission connection with a horizontally arranged first gear rack, the first gear rack is in mesh with one side of the gear, an obliquely arranged second gear rack is in mesh with the other side of the gear, and the second gear rack is connected with the mold core piece through a connecting piece. The driving piece drives the first gear rack to move horizontally, the second gear rack is driven to move in an oblique direction through gear transmission, and the mold core piece is driven to complete core-pulling demolding. The application changes the placement direction of the driving piece through transmission, avoids interference of the driving piece on the mold structure, optimizes space utilization, improves operation stability and forming efficiency, and is suitable for the mold forming field of complex structure products.

Description

Technical Field

[0001] This utility model relates to the field of mold structure technology, and more specifically, to an oblique core-pulling structure. Background Technology

[0002] In the field of mold forming, especially in the injection molding and stamping processes of complex structural products, molds are usually composed of multiple mold cores. Each mold core needs to move independently or collaboratively according to a preset trajectory to achieve precise product forming and smooth demolding. Among them, the movement direction of some mold cores is oblique (such as core pullers and sliders that are at a certain angle to the mold opening and closing direction), and their driving method directly affects the structural compactness, operational stability and forming efficiency of the mold.

[0003] In existing technologies, inclined core components often employ direct drive methods such as inclined guide pillars and inclined ejector cylinders. Inclined guide pillars convert the longitudinal force during mold opening and closing into an inclined driving force. They have a simple structure but limited stroke and require extremely high precision in fitting. Inclined ejector cylinders, on the other hand, require reserved installation space near the inclined movement path of the core component. They directly output inclined power through the cylinder body. Although they can achieve a longer stroke, when the internal structure of the mold is complex (such as having multiple sets of intersecting core components, deep cavities, or irregular structures), the arrangement of inclined drive components often faces the problem of insufficient space.

[0004] In view of this, the applicant hereby submits this application after studying the existing technology. Utility Model Content

[0005] This invention provides an oblique core-pulling structure, which aims to improve at least one of the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, this utility model provides an oblique core-pulling structure, including a connecting seat, a driving component, a first rack, a second rack, and a mold core; the connecting seat is provided with a rotating cavity, and a rotating gear is rotatably connected in the rotating cavity; the output end of the driving component is connected to the first rack, and the second rack is connected to the mold core through a connecting component; the first rack is horizontally arranged and passes through the connecting seat and meshes with one side of the rotating gear; the second rack is obliquely arranged and passes through the connecting seat and meshes with the other side of the rotating gear.

[0007] As a further optimization, the first rack is located above the gear; the second rack is located to the lower left of the gear.

[0008] As a further optimization, connecting ears are provided on both sides of the rotating cavity, and connecting shafts extend from both ends of the gear, with the connecting shafts and connecting ears being rotatably connected.

[0009] As a further optimization, the connecting seat is provided with a first sliding groove, the first rack is adapted to slide in the first sliding groove, and the first sliding groove is connected to the rotating cavity.

[0010] As a further optimization, the connecting seat is provided with a second sliding groove, the second rack is adapted to slide in the second sliding groove, and the second sliding groove is connected to the rotating cavity.

[0011] As a further optimization, a connecting rod is fixedly provided on the outer side of the mold core, and the other end of the connecting rod is fixedly connected to the connecting member; the connecting member is provided with a T-shaped fitting groove; the end of the second rack is provided with a fitting part that matches the T-shaped fitting groove.

[0012] As a further optimization, the two sides of the rotating gear are respectively set as a first zone and a second zone, the first rack meshes with the teeth of the first zone, and the second rack meshes with the teeth of the second zone; wherein, the radius of the second zone is larger than the radius of the first zone.

[0013] As a further optimization, the driving component is a telescopic hydraulic cylinder.

[0014] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0015] This application provides an inclined core-pulling structure, comprising a connecting seat, a driving component, a first rack, a second rack, and a mold core. The connecting seat has a rotating cavity, within which a rotating gear is rotatably connected. The driving component is driven by the horizontally positioned first rack, which meshes with one side of the gear. The inclined second rack meshes with the other side of the gear and is connected to the mold core via the connecting component. The driving component moves the first rack horizontally, and through gear transmission, moves the second rack along the inclined direction, thereby driving the mold core to complete core-pulling and demolding. This application changes the placement direction of the driving component through transmission, avoiding interference with the mold structure, optimizing space utilization, improving operational stability and molding efficiency, and is applicable to the mold forming field of complex structure products. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of an oblique core-pulling structure according to the present invention;

[0018] Figure 2This is a partial structural diagram of an oblique core-pulling structure according to this utility model;

[0019] Figure 3 This is a schematic diagram of the rotating gear in Embodiment 1 of this utility model;

[0020] Figure 4 This is a schematic diagram of the rotating gear in Embodiment 2 of this utility model.

[0021] The markings in the diagram are: 1. Connecting seat; 2. Driving component; 3. First rack; 4. Second rack; 5. Mold core; 6. Connecting component; 7. Rotating gear; 8. Rotating cavity; 9. First slide groove; 10. Second slide groove; 11. Connecting shaft; 12. Connecting ear; 13. Zone 1; 14. Zone 2; 15. Fitting part; 16. Fitting groove; 17. Connecting rod. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example 1

[0024] like Figure 1-3 As shown, this utility model provides an oblique core-pulling structure, including a connecting seat 1, a driving component 2, a first rack 3, a second rack 4, and a mold core component 5. The connecting seat 1 is the core supporting component of the overall device, and its interior is provided with a rotating cavity 8 to accommodate a rotating gear 7. The rotating gear 7 is rotatably connected to the connecting ears 12 on both sides of the rotating cavity 8 via connecting shafts 11 extending from both ends. The design of the connecting ears 12 enhances the load-bearing capacity of the rotating gear 7 and reduces the frictional resistance during rotation, thereby improving the transmission efficiency.

[0025] Furthermore, the connecting seat 1 is also provided with a first sliding groove 9 and a second sliding groove 10, which are respectively connected to the rotating cavity 8 and are used to adapt and slide with the first rack 3 and the second rack 4. The cross-sectional shape of the first sliding groove 9 and the second sliding groove 10 matches the shape of the corresponding rack, ensuring that the rack maintains a stable motion trajectory during sliding and avoiding transmission errors caused by offset.

[0026] The driving component 2 is preferably a telescopic hydraulic cylinder, the output end of which is connected to the first rack 3 for transmission.

[0027] Preferably, the first rack 3 is horizontally positioned and passes through the first groove 9 and connects to one side of the rotating gear 7 via the connecting seat 1. Specifically, the first rack 3 is located above the rotating gear 7. When the drive unit 2 is activated, its output end pushes the first rack 3 to slide forward along the first groove 9, thereby causing the rotating gear 7 to rotate counterclockwise. The other side of the rotating gear 7 is connected to the second rack 4, which is inclined and, in this embodiment, located to the lower left of the rotating gear 7. When the rotating gear 7 rotates counterclockwise, it can drive the second rack 4 to move to the lower right, thereby moving the mold core 5 to the lower right to complete demolding. In this way, by horizontally positioning the drive unit 2, the space occupied by the mold core 5 in the direction of movement is reduced, allowing it sufficient space to move and complete the core-pulling demolding.

[0028] The second rack 4 has a fitting portion 15 at its end, which fits into the T-shaped fitting groove 16 on the connector 6. The connector 6 is fixedly mounted on the bottom end of the connecting rod 17 on the outside of the mold core 5, and the mold core 5 is connected to the connector 6 via the connecting rod 17. When the second rack 4 moves in an inclined direction, the engagement of the fitting portion 15 and the T-shaped fitting groove 16 causes the connector 6 to drive the mold core 5 to move in an inclined direction, completing the demolding action. This connection method allows for easy replacement of second racks 4 of different lengths to meet specific needs.

[0029] The connecting seat 1 can be installed on the mold or placed on a separate mounting platform. There are multiple ways to do this, which will not be elaborated here.

[0030] Example 2

[0031] like Figure 4As shown, the difference between this embodiment and Embodiment 1 is that the two sides of the rotating gear 7 are respectively set as Zone 13 and Zone 2 14. The first rack 3 meshes with the gear teeth of Zone 13, and the second rack 4 meshes with the gear teeth of Zone 2 14. The radius of Zone 2 14 is larger than the radius of Zone 13. Specifically, the radius of Zone 2 14 can be set to twice that of Zone 13. This design allows the stroke ratio of the first rack 3 to the second rack 4 to be close to 1:2 when other conditions are ignored. This further reduces the lateral space while allowing the mold core 5 to have sufficient moving distance to complete the demolding.

[0032] The working principle of this utility model is as follows: After the drive component 2 is started, its output end pushes the first rack 3 to move forward in the horizontal direction; the horizontal movement of the first rack 3 drives the rotating gear 7 to rotate counterclockwise; the rotational movement of the rotating gear 7 further drives the second rack 4 to move in the inclined direction; the second rack 4, through the engagement of the fitting part 15 and the T-shaped fitting groove 16, drives the connecting part 6 and the mold core part 5 to move in the oblique direction, completing the core pulling and demolding action. Throughout the process, the transmission relationship between each component is clear, and the motion trajectory is controllable, ensuring the efficient and stable driving of the mold core part 5.

[0033] In practical applications, such as the molding process of complex products using injection molds, the core component 5 needs to move obliquely along a preset trajectory to achieve precise molding and smooth demolding. Traditional direct drive methods, such as inclined guide pillars or inclined ejector cylinders, are often limited by space constraints and cannot adapt to complex internal mold structures. This invention, however, uses a gear and rack transmission system to change the placement direction of the drive component 2, removing it from the oblique motion path of the core component 5, thus avoiding interference with the mold structure caused by the space occupied by the drive component 2. Simultaneously, since the tilt angle of the second rack 4 can be adjusted according to actual needs, combined with the transmission ratio, large-angle, long-distance core pulling can be achieved. Therefore, this invention is applicable to core components 5 with various oblique motion requirements.

[0034] In summary, the inclined core-pulling structure provided by this utility model has advantages such as compact structure, high space utilization, and stable operation, and can be widely used in the field of mold forming for complex structural products. Through specific structural design and transmission method, this utility model achieves the goals of optimizing the arrangement of the driving component 2, accurately controlling the motion trajectory of the mold core component 5, and improving the overall performance of the mold.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A slanted core-pulling structure, characterized in that, The device includes a connecting seat, a driving component, a first rack, a second rack, and a mold core. The connecting seat has a rotating cavity, and a rotating gear is rotatably connected within the rotating cavity. The output end of the driving component is connected to the first rack, and the second rack is connected to the mold core via a connecting component. The first rack is horizontally positioned, passes through the connecting seat, and meshes with one side of the rotating gear. The second rack is inclined, passes through the connecting seat, and meshes with the other side of the rotating gear.

2. The oblique core-pulling structure according to claim 1, characterized in that... The first rack is located above the gear; the second rack is located to the lower left of the gear.

3. The oblique core-pulling structure according to claim 1, characterized in that... The rotating cavity is provided with connecting ears on both sides, and the gear is provided with connecting shafts extending from both ends. The connecting shafts and the connecting ears are rotatably connected.

4. The oblique core-pulling structure according to claim 1, characterized in that... The connecting seat is provided with a first sliding groove, the first rack is adapted to slide in the first sliding groove, and the first sliding groove is connected to the rotating cavity.

5. The oblique core-pulling structure according to claim 1, characterized in that... The connecting seat is provided with a second sliding groove, the second rack is adapted to slide in the second sliding groove, and the second sliding groove is connected to the rotating cavity.

6. The oblique core-pulling structure according to claim 1, characterized in that... A connecting rod is fixedly provided on the outer side of the mold core, and the other end of the connecting rod is fixedly connected to the connecting member; the connecting member is provided with a T-shaped fitting groove; the end of the second rack is provided with a fitting part that matches the T-shaped fitting groove.

7. The oblique core-pulling structure according to claim 1, characterized in that... The rotating gear is configured with a first zone and a second zone on both sides. The first rack meshes with the teeth of the first zone, and the second rack meshes with the teeth of the second zone. The radius of the second zone is greater than the radius of the first zone.

8. The oblique core-pulling structure according to claim 1, characterized in that... The driving component is a telescopic hydraulic cylinder.

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