A blade root forming mold

Abstract

The present invention relates to a blade root forming mold, comprising an upper template, two upper mold movable blocks, two side pressure plates, a lower template, a lower mold movable block and a core mold, wherein an upper groove is provided on the bottom surface of the upper template, a follower block is fixedly connected to the middle of the bottom of the upper groove and its two sides pass through the two sides of the upper template; the two upper mold movable blocks are respectively slidably connected in the upper groove along the two sides of the upper template; a lower groove is provided on the top surface of the lower template corresponding to the upper groove and a lower half hole is provided on the front end surface corresponding to the upper half hole; the lower mold movable block is detachably connected to the lower groove; the upper half hole and the lower half hole constitute a core mold insertion hole; the core mold can be inserted into or removed from the core mold insertion hole. The structure of the traditional blade root forming mold is changed, and the two upper mold blocks are slidably connected in the upper groove of the upper mold plate. After the upper mold plate and the lower mold plate are closed, the two upper mold blocks can be removed, so that the variable pitch rocker arm outer shape cloth and the root side cloth (known) in the lower mold plate are laid on the surface of the upper mold blade root cloth layer (known) laid in the upper mold plate, thereby preserving the original fiber structure of the blade root side cloth and preventing cracking of the blade root surface.

Description

Technical Field

[0001] The present invention relates to the technical field of forming dies, and in particular to a blade root forming die. Background Art

[0002] The root of a helicopter blade is a key component of the helicopter blade, which can provide sufficient strength and rigidity when the propeller is subjected to large thrust and torque.

[0003] The existing blade root is formed by upper and lower mold pressing, wherein the side of the cloth layer at the blade root is composed of two pieces, which are heat-sealed during the upper and lower mold pressing. Although this method can fuse the side of the cloth layer at the blade root into a whole, the internal fibers have long been broken, often causing the blade root to crack.

[0004] Therefore, how to provide a blade root forming mold to prevent the blade root from cracking is a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0005] The invention provides a blade root forming die, which solves the existing technical problem that the blade root is prone to cracking.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: a blade root forming mold, including an upper mold plate, two upper mold blocks, two side pressure plates, a lower mold plate, a lower mold block and a core mold,

[0007] The bottom surface of the upper template is provided with an upper groove and the front end surface thereof is provided with an upper half hole. A follower block is fixedly connected to the middle of the bottom of the upper groove and its two sides pass through the two sides of the upper template; the two upper mold movable blocks are respectively slidably connected to the upper groove along the two sides of the upper template and the side surfaces close to each other can be adapted to abut against the two sides of the follower block; the two side pressure plates are respectively abutted against the side surfaces of the two upper mold movable blocks away from each other and are detachably connected to the two sides of the upper template;

[0008] The top surface of the lower template is provided with a lower groove corresponding to the upper groove and the front end surface thereof is provided with a lower half hole corresponding to the upper half hole); the lower mold movable block is detachably connected to the lower groove; the upper half hole and the lower half hole constitute a core mold insertion hole; the core mold can be inserted into or removed from the core mold insertion hole.

[0009] The beneficial effects of the present invention are: changing the traditional blade root forming mold structure, sliding the two upper mold blocks into the upper groove of the upper mold plate, and the two upper mold blocks can be removed after the upper mold plate and the lower mold plate are closed, so that the variable pitch rocker arm outer shape cloth and the root side cloth (known) in the lower mold plate are laid on the surface of the upper mold blade root cloth layer (known) laid in the upper mold plate, preserving the original fiber structure of the blade root side cloth and preventing the blade root surface from cracking.

[0010] Instructions for use of the blade root forming mold: Before the upper mold plate and the lower mold plate are closed, the two upper mold movable blocks are slid out from both sides of the upper groove. At this time, the upper mold plate and the lower mold plate are closed. When the upper mold blade root cloth layer (known) contacts the core mold, the variable pitch rocker arm outer shape cloth and the root side cloth (known) in the lower mold plate are laid on the surface of the upper mold blade root cloth layer (known) laid in the upper mold plate, and then the two upper mold movable blocks are pushed into the upper groove from both sides of the upper groove to realize the wrapping of the root side cloth and the final molding is completed by closing the mold with a press.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, it also includes multiple positioning pins, and the top surface of the lower mold block is provided with multiple positioning holes corresponding to the multiple positioning pins one by one; the multiple positioning pins are vertically fixedly connected to the bottom surface of the upper mold block, and are inserted into the multiple positioning holes one by one after the upper template and the lower template are pressed together.

[0013] Furthermore, it also includes an upper fixing bolt, the front end of the upper template is provided with an upper fixing hole 1, and the upper mold movable block is provided with an upper fixing hole 2 corresponding to the upper fixing hole 1; the upper fixing bolt passes through the upper fixing hole 1 and is fixed in the upper fixing hole 2 to fix the upper mold movable block in the upper groove.

[0014] Furthermore, it also includes a lower fixing bolt, the front end surface of the lower template is provided with a lower fixing hole 1, and the lower mold movable block is provided with a lower fixing hole 2 corresponding to the lower fixing hole 1; the lower fixing bolt passes through the lower fixing hole 1 and is fixed in the lower fixing hole 2 to fix the lower mold movable block in the lower groove.

[0015] Furthermore, it also includes a baffle, the rear end face of the upper template is provided with an upper baffle mounting groove; the rear end face of the lower template is provided with a lower baffle mounting groove; after the upper template and the lower template are pressed together, the upper baffle mounting groove and the lower baffle mounting groove constitute a baffle mounting groove; the baffle can be removably installed at the baffle mounting groove.

[0016] A further beneficial effect of the above method is that the baffle can close the cavity between the upper mold plate and the lower mold plate, thereby providing lateral pressure for the blade molding.

[0017] Furthermore, the lower mold has multiple movable blocks.

[0018] A further beneficial effect of adopting the above method is that the lower mold movable block is designed to be multiple, which can ensure that the lower mold movable block can be smoothly installed or disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a blade root forming mold of the present invention;

[0020] Figure 2 This is a schematic diagram of the assembly structure of the upper mold plate and the upper mold movable block in a blade root forming mold of the present invention;

[0021] Figure 3 This is a schematic diagram of the split structure of the upper mold plate and the upper mold movable block in a blade root forming mold of the present invention;

[0022] Figure 4 This is a schematic diagram of the assembly structure of the lower mold plate and the lower mold movable block in a blade root forming mold of the present invention;

[0023] Figure 5 This is a schematic diagram of the split structure of the lower template and the lower mold movable block in a blade root forming mold of the present invention.

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] 1. Upper template, 11. Upper groove, 12. Upper half hole, 13. Upper fixing hole 1, 2. Upper mold movable block, 21. Upper fixing hole 2, 3. Side pressure plate, 4. Lower template, 41. Lower groove, 42. Lower half hole, 43. Lower fixing hole 1, 5. Lower mold movable block, 51. Lower fixing hole 2, 6. Core mold, 7. Following block, 8. Locating pin, 9. Locating hole, 10. Upper fixing bolt, 14. Upper baffle mounting slot, 15. Lower baffle mounting slot, 16. Lower fixing bolt, 17. Baffle. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0027] like Figure 1 As shown, a blade root forming mold includes an upper mold plate 1, two upper mold movable blocks 2, two side pressure plates 3, a lower mold plate 4, a lower mold movable block 5 and a core mold 6.

[0028] The bottom surface of the upper template 1 is provided with an upper groove 11 and the front end surface is provided with an upper half hole 12. The middle part of the bottom of the upper groove 11 is fixedly connected to the follower block 7, and its two sides pass through the two sides of the upper template 1; the two upper mold movable blocks 2 are respectively slidably connected to the upper groove 11 along the two sides of the upper template 1, and the side surfaces close to each other can be adapted to abut against the two sides of the follower block 7; the two side pressure plates 3 are respectively abutted against the side surfaces of the two upper mold movable blocks 2 away from each other and are detachably connected to the two sides of the upper template 1;

[0029] The top surface of the lower template 4 is provided with a lower groove 41 corresponding to the upper groove 11 and the front end surface thereof is provided with a lower half hole 42 corresponding to the upper half hole 12; the lower mold movable block 5 is detachably connected to the lower groove 41; the upper half hole 12 and the lower half hole 42 constitute the core mold insertion hole; the core mold 6 can be inserted into or removed from the core mold insertion hole.

[0030] In some specific embodiments, multiple positioning pins 8 may also be included, and the top surface of the lower mold block 5 is provided with multiple positioning holes 9 corresponding to the multiple positioning pins 8 one by one; the multiple positioning pins 8 are vertically fixedly connected to the bottom surface of the upper mold block 2, and are inserted into the multiple positioning holes 9 one by one after the upper mold plate 1 and the lower mold plate 4 are pressed together.

[0031] In some specific embodiments, an upper fixing bolt 10 may also be included, an upper fixing hole 13 is provided at the front end of the upper template 1, and an upper fixing hole 2 21 is provided at the upper mold movable block 2 corresponding to the upper fixing hole 13; the upper fixing bolt 10 passes through the upper fixing hole 13 and is fixed in the upper fixing hole 21 to fix the upper mold movable block 2 in the upper groove 11.

[0032] In some specific embodiments, a lower fixing bolt 16 may also be included. The front end surface of the lower template 4 is provided with a lower fixing hole 1 43, and the lower mold movable block 5 is provided with a lower fixing hole 2 51 corresponding to the lower fixing hole 1 43; the lower fixing bolt 16 passes through the lower fixing hole 1 43 and is fixed in the lower fixing hole 2 51 to fix the lower mold movable block 5 in the lower groove 41.

[0033] In some specific embodiments, a baffle 17 may also be included, and the rear end face of the upper template 1 is provided with an upper baffle mounting groove 14; the rear end face of the lower template 4 is provided with a lower baffle mounting groove 15; after the upper template 1 and the lower template 4 are pressed together, the upper baffle mounting groove 14 and the lower baffle mounting groove 15 can constitute a baffle mounting groove; the baffle 17 can be removably installed at the baffle mounting groove.

[0034] In some specific embodiments, there are multiple lower mold pieces 5.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blade root forming mold, characterized in that: It comprises an upper mold plate (1), two upper mold movable blocks (2), two side pressure plates (3), a lower mold plate (4), a lower mold movable block (5) and a core mold (6). The bottom surface of the upper template (1) is provided with an upper groove (11) and the front end surface thereof is provided with an upper half hole (12); a follower block (7) is fixedly connected to the middle of the bottom of the upper groove (11) and its two sides pass through the two sides of the upper template (1); the two upper mold movable blocks (2) are respectively slidably connected to the upper groove (11) along the two sides of the upper template (1) and the side surfaces close to each other can be adapted to abut against the two sides of the follower block (7); the two side pressure plates (3) are respectively abutted against the side surfaces of the two upper mold movable blocks (2) away from each other and are detachably connected to the two sides of the upper template (1); The top surface of the lower template (4) is provided with a lower groove (41) corresponding to the upper groove (11), and the front end surface thereof is provided with a lower half hole (42) corresponding to the upper half hole (12); the lower mold movable block (5) is detachably connected to the lower groove (41); the upper half hole (12) and the lower half hole (42) constitute a core mold insertion hole; the core mold (6) can be inserted into or removed from the core mold insertion hole; It also includes a plurality of positioning pins (8), and the top surface of the lower mold movable block (5) is provided with a plurality of positioning holes (9) corresponding to the plurality of positioning pins (8) one by one; the plurality of positioning pins (8) are vertically fixedly connected to the bottom surface of the upper mold movable block (2), and are inserted into the plurality of positioning holes (9) one by one after the upper mold plate (1) and the lower mold plate (4) are pressed together; It also includes an upper fixing bolt (10), the front end of the upper template (1) is provided with an upper fixing hole 1 (13), and the upper mold movable block (2) is provided with an upper fixing hole 2 (21) corresponding to the upper fixing hole 1 (13); the upper fixing bolt (10) passes through the upper fixing hole 1 (13) and is fixed in the upper fixing hole 2 (21) to fix the upper mold movable block (2) in the upper groove (11); The lower mold plate (4) further comprises a lower fixing bolt (16), a front end surface of the lower mold plate (4) is provided with a lower fixing hole (43), and the lower mold movable block (5) is provided with a lower fixing hole (51) corresponding to the lower fixing hole (43); the lower fixing bolt (16) passes through the lower fixing hole (43) and is fixed in the lower fixing hole (51) to fix the lower mold movable block (5) in the lower groove (41).

2. The blade root forming mold according to claim 1, characterized in that: The invention also includes a baffle (17), wherein the rear end surface of the upper template (1) is provided with an upper baffle mounting groove (14); the rear end surface of the lower template (4) is provided with a lower baffle mounting groove (15); after the upper template (1) and the lower template (4) are pressed together, the upper baffle mounting groove (14) and the lower baffle mounting groove (15) can form a baffle mounting groove; and the baffle (17) can be detachably mounted at the baffle mounting groove.

3. The blade root forming mold according to claim 1, characterized in that: There are multiple lower mold movable blocks (5).

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