Internal thread linkage demolding structure of one-to-eight pipe fitting mold
By designing the internal thread linkage mold release structure of the eight-pipe fitting mold, the problem of low mold release efficiency of traditional molds is solved, and efficient production is achieved, with a compact structure and energy consumption saving.
Patent Information
- Application Number
- CN202421886635.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-06
AI Technical Summary
When producing internal threaded pipe fittings, traditional injection molds have low mold release efficiency and are difficult to achieve production efficiency of one or eight.
An internal thread linkage mold release structure of eight pipe fitting molds was designed. By setting core inserts and threaded core pieces on the core plate, a rotating shaft, a four-stage bearing assembly and a rotating gear are arranged under each threaded core piece, and the oil motor drives the driving gear and driven gear to achieve the linked mold release of the eight rotating shafts.
The internal threads of eight pipe fittings are removed at one time, which improves production efficiency, has a compact linkage structure, reliable action and saves energy consumption.
Smart Images
Figure CN222920999U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an internal thread linkage demoulding structure for an eight-cavity pipe fitting mould, belonging to the field of injection moulds. Background Art
[0002] When using an injection mould to produce plastic products, such as internal thread pipe fittings and other products, when demoulding the products, it is necessary to first demould the internal thread, and then the products can be taken out of the mould. Traditionally, such moulds usually adopt a horizontal forming structure, that is, the products are formed horizontally, the threaded ports of the products face the outer wall of the mould, and a rotary demoulding mechanism is arranged on the outer wall of the mould. During demoulding, the rotary demoulding mechanism drives the threaded core to rotate and demould. Since the overall volume of the mould determines the specifications of the injection moulding machine used to process the mould, in order to save the investment cost of equipment such as injection moulding machines, such moulds usually adopt a one-out-two or one-out-four structure, that is, two or four products are processed at a time, so that the volume of the mould is suitable for processing by medium and small injection moulding machines. In order to improve production efficiency, the applicant has designed an eight-cavity forming mould with the products placed vertically, and an eight-cavity internal thread linkage demoulding structure for demoulding the mould. Summary of the Invention
[0003] The purpose of the utility model is to provide an internal thread linkage demoulding structure suitable for an eight-cavity pipe fitting mould.
[0004] To achieve the above purpose, the utility model adopts the following technical solutions:
[0005] An eight-cavity pipe fitting mould internal thread linkage demoulding structure, including a core plate, a core insert is arranged in the core plate, eight threaded core blocks are arranged on the core insert, each threaded core block has an injection-molded pipe fitting with an internal thread, and the internal threads of the eight pipe fittings are driven to demould by a linkage demoulding structure. The linkage demoulding structure includes a rotating shaft arranged under each threaded core block, a four-stage bearing assembly and a rotating gear are arranged on each rotating shaft. A core fixing plate is arranged under the core plate, the rotating shaft is connected to the core fixing plate, a first bearing fixing plate and a second bearing fixing plate are arranged between the core fixing plate and the core plate, the four-stage bearing assembly is fixed in the first bearing fixing plate and the second bearing fixing plate. A mould foot frame is arranged under the core fixing plate, a core bottom plate is arranged under the mould foot frame, a driving shaft is arranged at the center of the core bottom plate, the driving shaft extends into the second bearing fixing plate, and a driving gear is arranged at its head. The driving gear meshes with the rotating gears on four adjacent rotating shafts. Four driven gears are also arranged in the second bearing fixing plate, the four driven gears are located at four positions of the second bearing fixing plate, and each meshes with two adjacent rotating gears. An oil motor is arranged outside one side of the mould foot frame, and the oil motor drives the driving shaft to rotate through a transmission belt.
[0006] Further, the four-stage bearing assembly includes a first bearing, a second bearing, a third bearing, and a fourth bearing. The first bearing, the second bearing, and the third bearing are fixed in the first bearing fixing plate, and the fourth bearing is fixed in the second bearing fixing plate.
[0007] Further, the threaded core block and the rotating shaft are integrally processed and formed.
[0008] The beneficial effects of the present utility model are as follows:
[0009] Through the linkage demoulding structure of the present technical solution, only one power drives the rotation of eight rotating shafts, enabling the internal threads of eight pipe fittings to be demoulded at one time, realizing the production of eight parts in one mold for this type of mold. Not only does the production efficiency double, but also the linkage structure is compact, the action is reliable, and the energy consumption is saved, having very beneficial and positive effects. Description of the Drawings
[0010] Figure 1 is a schematic diagram of the internal thread linkage demoulding structure of the eight-parts-in-one pipe fitting mold of the present utility model;
[0011] Figure 2 is a schematic diagram of the oil motor connecting to the driving shaft through a transmission belt of the present utility model;
[0012] Figure 3 is a top view schematic diagram of the linkage demoulding structure of the present utility model;
[0013] Figure 4 is a three-dimensional schematic diagram of the linkage demoulding structure of the present utility model. Specific Embodiments
[0014] The following further describes the present utility model in detail in conjunction with the specification drawings and specific embodiments.
[0015] As Figure 1 — Figure 4As shown in the figure, an internal thread linkage demoulding structure for an eight-cavity pipe fitting mould includes a core plate 1. A core insert 2 is arranged in the core plate. Eight thread core blocks 3 are arranged on the core insert. Each thread core block has a pipe fitting 5 with an internal thread 6 formed by injection molding. The internal threads 6 of the eight pipe fittings are driven to demould by the linkage demoulding structure. The linkage demoulding structure includes a rotating shaft 7 arranged under each thread core block 3. A four-stage bearing assembly 08 and a rotating gear 9 are arranged on each rotating shaft. A core fixing plate 10 is arranged under the core plate 1. The rotating shaft 7 is connected to the core fixing plate 10. A first bearing fixing plate 11 and a second bearing fixing plate 12 are arranged between the core fixing plate 10 and the core plate 1. The four-stage bearing assembly 08 is fixed in the first bearing fixing plate 11 and the second bearing fixing plate 12. A die foot frame 13 is arranged under the core fixing plate 10. A core bottom plate 15 is arranged under the die foot frame. A driving shaft 16 is arranged at the center of the core bottom plate. The driving shaft 16 extends into the second bearing fixing plate 12, and a driving gear 17 is arranged at its head. The driving gear 17 meshes with the rotating gears 9 on four adjacent rotating shafts 7. Four driven gears 18 are also arranged in the second bearing fixing plate 12. The four driven gears 18 are located at four positions of the second bearing fixing plate 12 and each meshes with two adjacent rotating gears 9. An oil motor 19 is arranged outside one side of the die foot frame 13. The oil motor 19 drives the driving shaft 16 to rotate through a transmission belt 20. During demoulding, the oil motor 19 works, drives the driving shaft 16 to rotate through the transmission belt 20. The driving shaft 16 drives the driving gear 17 to rotate. The driving gear 17 drives the four rotating shafts 7 above it to rotate through the four adjacent rotating gears 9 meshing with it. These four rotating shafts 7 then drive the other four rotating shafts 7 to rotate through the four driven gears 18, so as to drive the thread core blocks 3 to rotate and disengage from the internal threads 6 of the pipe fittings 5, realizing eight-cavity demoulding. The whole set of actions are closely linked. In particular, the four-stage bearing assembly 08 is arranged, which can make each rotating shaft rotate smoothly, ensure smooth demoulding, and the mould can produce without stopping. Through the linkage demoulding structure of this technical solution, only one power drives the eight rotating shafts to rotate, so that the internal threads of the eight pipe fittings are demoulded at one time, realizing eight-cavity production of this type of mould. It not only doubles the production efficiency, but also has a compact linkage structure, reliable actions, and energy saving, having very beneficial and positive effects.
[0016] Further, the four-stage bearing assembly 08 includes a first bearing 81, a second bearing 82, a third bearing 83 and a fourth bearing 84. The first bearing 81, the second bearing 82 and the third bearing 83 are fixed in the first bearing fixing plate 11, and the fourth bearing 84 is fixed in the second bearing fixing plate 12, with convenient and reliable fixing.
[0017] Further, the thread core block 3 and the rotating shaft 7 are integrally processed and formed. The integral processing has good strength and reduces the assembly parts at the same time.
[0018] The above specific embodiments are used to explain the present utility model, which are only the preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the claims of the present utility model fall within the protection scope of the present utility model.
Claims
1. The internal thread linkage demoulding structure of one-out eight-pipe fittings mold is characterized by The invention comprises a core plate (1), a core insert (2) is arranged in the core plate, eight threaded core blocks (3) are arranged on the core insert, each threaded core block has an injection-molded pipe fitting (5) with an internal thread (6), the internal threads (6) of the eight pipe fittings are driven for demoulding by a linkage demoulding structure, the linkage demoulding structure comprises a rotating shaft (7) arranged under each threaded core block (3), each rotating shaft is provided with a four-stage bearing assembly (08) and a rotating gear (9), a core fixing plate (10) is arranged under the core plate (1), the rotating shaft (7) is connected to the core fixing plate (10), a first bearing fixing plate (11) and a second bearing fixing plate (12) are arranged between the core fixing plate (10) and the core plate (1), and the four-stage bearing assembly (08) is fixed to the first bearing fixing plate (11) and the second bearing fixing plate (12). In the fixed plate (12), a mold foot frame (13) is arranged under the core fixing plate (10), a core bottom plate (15) is arranged under the mold foot frame, a driving shaft (16) is arranged at the center of the core bottom plate, the driving shaft (16) extends into the second bearing fixing plate (12), and a driving gear (17) is arranged at the head thereof, the driving gear (17) meshes with rotating gears (9) on four adjacent rotating shafts (7), four driven gears (18) are also arranged in the second bearing fixing plate (12), the four driven gears (18) are located at four positions of the second bearing fixing plate (12), and each meshes with two adjacent rotating gears (9), an oil motor (19) is arranged outside one side of the mold foot frame (13), and the oil motor (19) drives the driving shaft (16) to rotate through a transmission belt (20).
2. The internal thread linkage demoulding structure of the one-out-eight pipe fittings mold according to claim 1, characterized in that The four-stage bearing assembly (08) comprises a first bearing (81), a second bearing (82), a third bearing (83) and a fourth bearing (84); the first bearing (81), the second bearing (82) and the third bearing (83) are fixed in a first bearing fixing plate (11), and the fourth bearing (84) is fixed in a second bearing fixing plate (12).
3. The internal thread linkage demoulding structure of the eight-outlet pipe fitting mold according to claim 1, characterized in that The threaded core block (3) and the rotating shaft (7) are integrally formed.