A cylinder forming die

Abstract

The present invention discloses a cylinder forming die, which comprises a core block device and a core rotating mechanism. The core block device includes a plurality of main core blocks and split core blocks connected between two adjacent main core blocks. The split core blocks include a plurality of sub-core blocks connected by core block rotating shafts. The core rotating mechanism includes a core outer cylinder and a core inner shaft rotatably arranged in the core outer cylinder. One end of a steel cable is connected to the core inner shaft, and the other end passes through the core outer cylinder and is connected to the main core blocks and sub-core blocks. An elastic support device is further arranged on the outer periphery of the steel cable between the main core blocks and sub-core blocks and the core outer cylinder. The core rotating mechanism operates to control the core block device to move to a first state or a second state. In the first state, the main core blocks and sub-core blocks are connected into a cylindrical die body. In the second state, the main core blocks and sub-core blocks are disconnected, and the main core blocks and sub-core blocks compress the elastic support device and approach the core outer cylinder. This application solves the problem of scratching the inner wall of the cylindrical workpiece during demoulding.

Description

Technical Field

[0001] The present invention relates to the technical field of fiber component forming, and particularly relates to a cylindrical body forming mold. Background Art

[0002] In the field of forming carbon fiber composite components, if it is necessary to form a cylindrical component with a large middle part, small ends and an inner surface as the die-attached surface, the forming core mold is either designed to be divided along the axial direction of the cylinder or along the radial direction of the cylinder. No matter which way the core mold is divided, if the shape of the cylinder is too large, it will cause the forming core block to be too heavy, and there will be a cutting edge at the joint of the divided blocks. It is inconvenient for the operator to demold. In order to separate the core mold from the product, there is often a phenomenon that the inner wall of the component is scratched by using a rubber soft hammer to strike the core block. Summary of the Invention

[0003] The purpose of the present invention is to provide a cylindrical body forming mold to solve the problem that the inner wall of the cylindrical component is easily scratched during demolding in the prior art.

[0004] To achieve the above purpose, the present invention is implemented by the following technical solutions:

[0005] A cylindrical body forming mold includes:

[0006] A core block device, including a plurality of main core blocks and split core blocks connected between adjacent two main core blocks, and the split core blocks include a plurality of sub-core blocks connected by core block rotating shafts;

[0007] A core rotating mechanism, including a core outer cylinder and a core inner shaft rotatably arranged in the core outer cylinder. One end of a steel cable is connected to the core inner shaft, and the other end passes through the core outer cylinder and is connected to the main core block and the sub-core block. An elastic support device is further arranged on the outer periphery of the steel cable between the main core block and the sub-core block and the core outer cylinder;

[0008] The core rotating mechanism works to control the core block device to move to a first state or a second state. In the first state, the main core blocks and the sub-core blocks are connected into a cylindrical mold body; in the second state, the main core blocks and the sub-core blocks are disconnected, and the main core blocks and the sub-core blocks compress the elastic support device and approach the core outer cylinder.

[0009] Further, the split core block includes two sub-core blocks, and the two sub-core blocks are rotatably connected by a core block rotating shaft.

[0010] Further, the core block device includes two main core blocks and two split core blocks. The connecting surfaces of the sub-core blocks in the split core blocks and the main core blocks are all inclined surfaces, and the inclined surface of the sub-core block is an outer inclined surface, and the inclined surface of the main core block is an inner inclined surface.

[0011] Further, the elastic support device is a spring.

[0012] Further, the outer core cylinder and the inner core shaft are rotatably connected through a bearing.

[0013] Further, the core rotation mechanism further includes a handwheel, and the handwheel is fixed at the end of the inner core shaft to drive the inner core shaft to rotate.

[0014] Further, the end of the steel cable is connected to the main core block and the sub-core block through a pull ring.

[0015] Further, a positioning end cover is further included. When the core block device is in the first state, the positioning end cover is detachably connected to the two open ends of the cylindrical mold body.

[0016] Further, T-shaped notches are provided on both the main core block and the sub-core block, and T-shaped protrusions are provided on the inner side surface of the positioning end cover. The positioning end cover is inserted and connected to the T-shaped notches on the main core block and the sub-core block through the T-shaped protrusions.

[0017] Further, a handle groove is further provided on the positioning end cover.

[0018] According to the above technical solution, the embodiments of the present invention have at least the following effects: The forming mold of the present application is designed in the form of a main core block and a split core block. The split core block includes a plurality of sub-core blocks connected by core block rotating shafts. The core rotation mechanism can work to connect the main core block and the sub-core block into a cylindrical mold body or disconnect the two. The cylindrical mold body ensures the effect of forming a cylindrical part. The disconnection of the main core block and the sub-core block facilitates the demolding of the cylindrical part and solves the problem of scratching the inner wall of the cylindrical part during demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the overall forming mold of the present invention;

[0020] Figure 2 is Figure 1 a schematic diagram after removing the end cover;

[0021] Figure 3 is Figure 1 a schematic diagram after removing the end cover and the spring;

[0022] Figure 4 is a schematic diagram of the core rotation mechanism in the present invention;

[0023] Figure 5 is Figure 4 a partial detailed exploded view of;

[0024] Figure 6 is Figure 4 a layout detailed exploded view of;

[0025] Figure 7 Schematic diagram of the forming die in the second state;

[0026] Figure 8 Schematic diagram of the cylindrical workpiece.

[0027] Wherein: 1. First main core block; 2. Second main core block; 3. First sub-core block one; 4. First sub-core block two; 5. Second sub-core block one; 6. Second sub-core block two; 7. Core block rotating shaft; 8. Positioning end cover; 9. Core rotating mechanism; 9.1. Pulling ring; 9.2. Steel cable; 9.3. Handwheel; 9.4. Core outer cylinder; 9.5. Core inner shaft; 9.6. Bearing; 9.7. Spring. Specific embodiments

[0028] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0029] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The terms "front", "rear", "left", "right", "upper", "lower" used in the description of the present invention refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0030] A cylindrical forming die provided by the present application divides the core mold axially along the cylindrical product, and then installs springs and steel cables inside to make each core mold block form a flexible connection. When demolding, each core mold block is contracted towards the central axis position of the core mold through an internal mechanism, and when contracted to a certain extent, all the core mold blocks can be separated from the cylindrical workpiece together.

[0031] Such as Figures 1 to 8As shown in the figure, a cylinder forming die includes a core block device and a core rotating mechanism 9. The core block device includes a plurality of main core blocks and split core blocks connected between two adjacent main core blocks. The split core blocks include a plurality of sub-core blocks connected by core block rotating shafts 7. The core rotating mechanism 9 includes a core outer cylinder 9.4 and a core inner shaft 9.5 rotatably arranged inside the core outer cylinder 9.4. One end of a steel cable 9.2 is connected to the core inner shaft 9.5, and the other end passes through the core outer cylinder 9.4 and is connected to the main core blocks and sub-core blocks. An elastic support device is also provided on the outer periphery of the steel cable 9.2 between the main core blocks and sub-core blocks and the core outer cylinder 9.4. The core rotating mechanism 9 operates to control the core block device to move to a first state or a second state. In the first state, the main core blocks and sub-core blocks are connected into a cylindrical die body. In the second state, the main core blocks and sub-core blocks are disconnected, and the main core blocks and sub-core blocks compress the elastic support device and approach the core outer cylinder 9.4.

[0032] For the forming die of the present application, the forms of the main core blocks and split core blocks are designed. The split core blocks include a plurality of sub-core blocks connected by core block rotating shafts. The core rotating mechanism can operate to connect the main core blocks and sub-core blocks into a cylindrical die body or disconnect the two. The cylindrical die body ensures the forming effect of the cylindrical parts. The disconnection of the main core blocks and sub-core blocks facilitates the demolding of the cylindrical parts and solves the problem of scratching the inner wall of the cylindrical parts during demolding.

[0033] The present application will be described below through specific embodiments.

[0034] In one embodiment, the core block device includes two main core blocks and two split core blocks. The split core blocks include two sub-core blocks. In some other embodiments, the numbers of the main core blocks and split core blocks can be adjusted. The split core blocks can also include three sub-core blocks. In the subsequent embodiments, the case where the core block device includes two main core blocks and two split core blocks, and the split core blocks adopt the form of two sub-core blocks will be used for description.

[0035] As Figure 1 shown in the figure, the core block device includes a first main core block 1, a second main core block 2, a first sub-core block 3, a second sub-core block 4, a first sub-core block 5 and a second sub-core block 6. The first sub-core block 3 and the second sub-core block 4 are rotatably connected by a core block rotating shaft 7. The first sub-core block 5 and the second sub-core block 6 rotate through the core block rotating shaft 7.

[0036] The connecting surface between the first sub-core block 1-3 and the second sub-core block 1-4 is flat, the connecting surface between the first sub-core block 1-3 and the first main core block 1 is inclined, and the connecting surface between the second sub-core block 1-4 and the second main core block 2 is inclined. Specifically, the inclined surfaces of the first sub-core block 1-3 and the second sub-core block 1-4 are outer inclined surfaces, and the inclined surfaces of the first main core block 1 and the second main core block 2 are inner inclined surfaces. The connecting surface between the second sub-core block 2-5 and the second sub-core block 2-6 is flat, the connecting surface between the second sub-core block 2-5 and the first main core block 1 is inclined, and the connecting surface between the second sub-core block 2-6 and the second main core block 2 is inclined. Specifically, the inclined surfaces of the first main core block 1 and the second main core block 2 are inner inclined surfaces, and the inclined surfaces of the second sub-core block 2-5 and the second sub-core block 2-6 are outer inclined surfaces.

[0037] When the core rotation mechanism 9 works, the core block device is pulled by the steel cable 9.2. Due to the above-mentioned inclined surface design, the sub-core blocks in the two split core blocks will rotate and contract first. When the split core blocks move inward and disengage from the main core blocks, the main core blocks can also contract inward, ensuring that the core block device can move inward.

[0038] In some further embodiments, the core rotation mechanism further includes a handwheel 9.3. The handwheel 9.3 is fixed to the end of the core inner shaft 9.5. Rotating the handwheel 9.3 drives the core inner shaft 9.5 to rotate. The core inner shaft 9.5 is rotatably connected to the inside of the core outer cylinder 9.4 through a bearing 9.6. One end of the steel cable 9.2 is connected to the core inner shaft 9.5, and the other end penetrates outside the core outer cylinder 9.4 and is connected to the main core block and the sub-core block through a pull ring 9.1.

[0039] In some further embodiments, the elastic support device is a spring. The spring is sleeved on the outer periphery of the steel cable 9.2 and is located between the core inner shaft 9.5 and the core outer cylinder 9.4. In the first state, when the main core block and the sub-core block are connected into a cylindrical mold body, the spring plays a simple supporting effect on the main core block and the sub-core block.

[0040] In some embodiments, a positioning end cap 8 is further included. When the core block device is in the first state, the positioning end cap 8 is detachably connected to the two open ends of the cylindrical mold body. The positioning end cap 8 plays a supporting effect during the curing and forming of the workpiece, preventing the position of the cylindrical mold from shifting.

[0041] Specifically, T-shaped notches are provided on both the main core block and the sub-core block. T-shaped protrusions are provided on the inner side surface of the positioning end cap 8. The positioning end cap 8 is connected to the T-shaped notches on the main core block and the sub-core block by inserting the T-shaped protrusions. To facilitate the removal of the positioning end cap 8, a handle groove is also provided on the positioning end cap 8. As Figure 1 shown, the handle groove adopts a notch design.

[0042] When forming a cylindrical workpiece, the mold state is as Figure 1As shown, when the workpiece to be fabricated is cured and formed and ready for demolding, remove the positioning end caps 8 at both ends of the mold, and then rotate the handwheel 9.3 clockwise or counterclockwise. The handwheel 9.3 drives the 9-core inner shaft 9.5 to rotate. The core inner shaft tightens the steel cable 9.2 wound around the shaft, driving the pull ring 9.1. The pull ring 9.1 drives the first sub-core block one 3, the first sub-core block two 4, the second sub-core block one 5, and the second sub-core block two 6 to fold and approach the inner shaft. At this time, the first main core block 1 and the second main core block 2, without the support of the first sub-core block one 3, the first sub-core block two 4, the second sub-core block one 5, and the second sub-core block two 6, also move closer to the inner shaft under the action of the pulling force. When all the core blocks are tightly close to the inner shaft and the maximum cross-sectional dimension of the whole mold is smaller than the minimum inner diameter of the cylindrical part, the whole mold can be separated from the cylinder. Since there is a 9.7 spring on each steel cable, after the mold is separated from the cylindrical part, loosen the handwheel, and all the core blocks can return to their original positions under the action of the spring force.

[0043] As is known by common technical knowledge, the present invention can be implemented by other embodiments without departing from its spiritual essence or essential features. Therefore, the above-disclosed embodiments are illustrative in all aspects and not exclusive. All changes within the scope of the present invention or equivalent to the present invention are encompassed by the present invention.

Claims

1. A cylinder forming die, characterized in that, it includes: A core block device, including a plurality of main core blocks and split core blocks connected between two adjacent main core blocks, and the split core blocks include a plurality of sub-core blocks connected by a core block rotating shaft (7); A core rotating mechanism (9), including a core outer cylinder (9.4) and a core inner shaft (9.5) rotatably arranged in the core outer cylinder (9.4), one end of a steel cable (9.2) is connected to the core inner shaft (9.5), and the other end passes through the core outer cylinder (9.4) and is connected to the main core block and the sub-core block, and an elastic support device is further arranged on the outer periphery of the steel cable (9.2) between the main core block and the sub-core block and the core outer cylinder (9.4); The core rotating mechanism (9) works to control the core block device to move to a first state or a second state. In the first state, the main core blocks and the sub-core blocks are connected into a cylindrical die body; in the second state, the main core blocks and the sub-core blocks are disconnected, and the main core blocks and the sub-core blocks compress the elastic support device and approach the core outer cylinder (9.4); The core block device includes two main core blocks and two split core blocks, and the connecting surfaces of the sub-core blocks in the split core blocks and the main core blocks are all inclined surfaces, and the inclined surface of the sub-core block is an outer inclined surface, and the inclined surface of the main core block is an inner inclined surface; The core rotating mechanism (9) further includes a handwheel (9.3), and the handwheel (9.3) is fixed at the end of the core inner shaft (9.5) to drive the core inner shaft (9.5) to rotate; The end of the steel cable (9.2) is connected to the main core block and the sub-core block through a pull ring (9.1).

2. The cylinder forming die according to claim 1, characterized in that, the split core block includes two sub-core blocks, and the two sub-core blocks are rotatably connected through a core block rotating shaft (7).

3. The cylinder forming die according to claim 1, characterized in that, the elastic support device is a spring.

4. The cylinder forming die according to claim 1, characterized in that, the core outer cylinder (9.4) and the core inner shaft (9.5) are rotatably connected through a bearing (9.6).

5. The cylinder forming die according to claim 1, characterized in that, it further includes a positioning end cover (8), and when the core block device is in the first state, the positioning end cover (8) is detachably connected to the two open ends of the cylindrical die body.

6. The cylinder forming die according to claim 5, characterized in that, both the main core block and the sub-core block are provided with T-shaped notches, the inner side surface of the positioning end cover (8) is provided with T-shaped protrusions, and the positioning end cover (8) is plugged and connected to the T-shaped notches on the main core block and the sub-core block through the T-shaped protrusions.

7. The cylinder forming die according to claim 5, characterized in that, the positioning end cover (8) is further provided with a handle groove.

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