CN-224209089-U - Propeller casting die

CN224209089UCN 224209089 UCN224209089 UCN 224209089UCN-224209089-U

Abstract

The utility model relates to the technical field of propeller production, in particular to a propeller casting die. The device comprises a lower template and an upper template arranged above the lower template, wherein a paddle shaft casting die is coaxially fixed on one side, close to each other, of the upper template and the lower template. According to the utility model, after the two paddle shaft casting molds are assembled up and down and the paddle casting molds are assembled up and down, a worker rotates a plurality of first nuts successively, so that the first nuts move downwards along the axial direction of the vertical rod, namely the upper template and the lower template are close to each other, the upper template and the lower template respectively drive the corresponding paddle casting molds to move, so that the gap between the two paddle casting molds after the assembly is reduced, then the worker rotates a plurality of second nuts successively, so that the second nuts and the end caps cooperate to push the upper baffle plate and the lower baffle plate to be close to each other, so that the gap between the two paddle casting molds after the assembly is further reduced, the sealing property of the screw molding cavity is enhanced, and the possibility of leakage of molten metal from the inside of the molding cavity is reduced.

Inventors

ZHANG QINQUAN
WANG YANG
ZHAO HONGJIA
QU KAI
GAO JING
YU SHENGREN
CHEN CHONG
ZHANG HAN

Assignees

大连畅泰船用推进器有限公司

Dates

Publication Date: 20260508
Application Date: 20250409

Claims (6)

1. The utility model relates to a propeller casting mould, which comprises a lower template (1) and an upper template (2) arranged above the lower template (1), wherein one side of the upper template (2) and one side of the lower template (1) close to each other are coaxially fixed with a propeller shaft casting mould (4), two propeller shaft casting moulds (4) are assembled up and down, and the propeller casting mould is characterized in that a plurality of first locking mechanisms (3) are arranged between the lower template (1) and the upper template (2), the first locking mechanisms (3) press the upper template (2) towards the direction close to the lower template (1), a plurality of lower baffle plates (41) are fixed on the circumferential side wall of the propeller shaft casting mould (4) positioned below in an annular array, upper baffle plates (42) are fixed at positions corresponding to each lower baffle plate (41) on the circumferential side wall of the propeller shaft casting mould (4) positioned above, one sides of the upper baffle plates (42) and the lower baffle plates (41) close to each other are respectively fixed with a propeller blade casting mould (5), a plurality of propeller blade casting moulds (5) are arranged between the upper baffle plates (5) and the corresponding upper baffle plates (5) of the lower baffle plates (41) to form a plurality of corresponding upper baffle plates (6), the second locking mechanism (6) presses the upper baffle (42) in a direction approaching the corresponding lower baffle (41).
2. The propeller casting mold as set forth in claim 1, characterized in that a plurality of through slots (21) are formed in the upper die plate (2) at positions near the edges, the first locking mechanism (3) comprises a vertical rod (31) vertically fixed on the upper side wall of the lower die plate (1) at positions near the edges, and the upper end of the vertical rod (31) passes through one of the through slots (21) and extends to the upper side of the upper die plate (2).
3. The propeller casting mold as set forth in claim 2, wherein the first locking mechanism (3) further comprises a square frame (32) provided on the upper side wall of the upper die plate (2) and a lifting pipe (33) provided on the upper side wall of the square frame (32), the upper end of the upright (31) is sequentially slid through the through groove (21), the square frame (32) and the lifting pipe (33) and is screwed with a first nut (34), and the square frame (32) and the lifting pipe (33) are pressed and covered in a direction approaching to the upper die plate (2) when the first nut (34) is screwed.
4. The propeller casting mold as set forth in claim 1, characterized in that the second locking mechanism (6) comprises an end cap (61) provided at a position near the edge of the lower side wall of the lower baffle plate (41), a plunger (62) is coaxially fixed to the upper side wall of the end cap (61), the upper end of the plunger (62) is slidably passed through the lower baffle plate (41) and the upper baffle plate (42) and is screwed with a second nut (63), and the lower side wall of the second nut (63) is in contact with the upper side wall of the upper baffle plate (42).
5. The propeller casting mold as set forth in claim 4, characterized in that the second locking mechanism (6) further comprises a collar (64) coaxially fixed to the plunger (62) near the intermediate position, the collar (64) being provided on one side of the blade casting mold (5), the collar (64) being located at a position between the lower baffle plate (41) and the upper baffle plate (42).
6. The propeller casting mold as set forth in claim 4, wherein the second locking mechanism (6) further comprises a locking groove (611) provided on the end cap (61), a lock rod (65) is slidably provided inside the locking groove (611), one end of the lock rod (65) extends to the outside of the locking groove (611) and is fixedly provided with a handle head (67), a guide sleeve (66) fixed on the lower side wall of the lower baffle plate (41) is slidably sleeved on the lock rod (65), the guide sleeve (66) is provided between the handle head (67) and the end cap (61), a limit plate (68) is fixed on the lower side wall of the lower baffle plate (41), and the limit plate (68) is located on the side of the handle head (67) away from the lock rod (65).

Description

Propeller casting die Technical Field The utility model relates to the technical field of propeller production, in particular to a propeller casting die. Background The large-scale marine screw is usually produced by adopting die casting, after the upper die and the lower die for casting the screw are assembled up and down, a complete screw molding cavity is formed inside the assembled upper die and lower die, a worker pours molten metal into the screw molding cavity, after the molten metal is solidified and molded in the screw molding cavity, the upper die is lifted away from the upper side of the lower die by using lifting equipment, and the solidified and molded screw can be taken out from the screw molding cavity to finish the casting of the screw. In the prior art, the upper die and the lower die after die assembly are welded and fixed to avoid a gap between the upper die and the lower die after die assembly, when a worker pours molten metal into the inside of a propeller molding cavity, the pressure in the propeller molding cavity is increased, the metal liquid can exert external thrust on the upper die and the lower die and push the upper die and the lower die to be away from each other, so that the gap is generated between the upper die and the lower die after die assembly, the upper die and the lower die are welded on the former connecting piece under the condition that the gap is generated when the upper die and the lower die are pushed, the connecting piece is easy to collapse during the process of the welding, the danger of the worker is increased, and meanwhile, when the gap is generated between the upper die and the lower die, the high-temperature metal liquid leaks out of the propeller molding cavity from the gap and solidifies, the metal solidified outside cannot be used, and the subsequent processing and removal are needed, so that the casting quality of the propeller is reduced; Meanwhile, after the upper die and the lower die are assembled, a worker also needs to weld the connecting pieces on the upper die and the lower die one by one, and after the screw propeller is solidified and formed in the forming cavity, the worker also needs to spend a great deal of time to weld the connecting pieces so as to take out the screw propeller from the upper die and the lower die, the operation is troublesome, and the casting efficiency of the screw propeller is reduced. Disclosure of utility model The utility model aims to provide a propeller casting mold for solving the problems in the prior art. In order to achieve the above object, the present utility model provides a propeller casting mold, including a lower mold plate and an upper mold plate disposed above the lower mold plate, wherein a propeller shaft casting mold is coaxially fixed on one side of the upper mold plate and one side of the lower mold plate, which are close to each other, the two propeller shaft casting molds are assembled up and down, a plurality of first locking mechanisms are disposed between the lower mold plate and the upper mold plate, the first locking mechanisms press the upper mold plate in a direction close to the lower mold plate, a plurality of lower baffle plates are fixed on a circumferential side wall of the propeller shaft casting mold located below in an annular array, an upper baffle plate is fixed on a circumferential side wall of the propeller shaft casting mold located above in a position corresponding to each lower baffle plate, a propeller shaft casting mold is fixed on one side of the upper baffle plate and one side of the lower baffle plate, which is close to each other, a propeller blade casting mold on the lower baffle plate and the propeller casting mold on the corresponding upper baffle plate are assembled up and down to form a model space of propeller blades, and a plurality of second locking mechanisms are disposed between the upper baffle plates and the corresponding lower baffle plates, and the second locking mechanisms press the upper baffle plates in a direction close to the corresponding lower baffle plates. As a further improvement of the technical scheme, a plurality of through grooves are formed in the position, close to the edge, of the upper template, the first locking mechanism comprises a vertical rod vertically fixed on the upper side wall of the lower template, close to the edge, and the upper end of the vertical rod penetrates through one of the through grooves and extends to the upper portion of the upper template. As a further improvement of the technical scheme, the first locking mechanism further comprises a square frame arranged on the upper side wall of the upper die plate and a lifting pipe arranged on the upper side wall of the square frame, the upper end of the vertical rod sequentially slides to penetrate through the through groove, the square frame and the lifting pipe and is in threaded connection with a first nut, and the square frame and the lifting pipe are covered in a