阅读说明：本技术 螺旋桨铸造设备 (Propeller casting equipment ) 是由 王以军 于 2020-12-26 设计创作，主要内容包括：本申请涉及一种螺旋桨铸造设备,包括砂箱、芯管以及驱动组件；所述砂箱的上端为开口,且所述砂箱用于容纳砂子以及工件；所述芯管竖直设于砂箱内,且所述芯管用于成型螺旋桨上的安装孔；所述驱动组件设于砂箱上,并用于驱动所述芯管转动。铸造成型后,螺旋桨套接于芯管上,驱动组件动作,使得芯管转动,进而驱动螺旋桨转动,搅拌砂箱内的砂子,砂子不断翻滚,接触空气以快速冷却。(The application relates to propeller casting equipment, which comprises a sand box, a core pipe and a driving assembly; the upper end of the sand box is provided with an opening, and the sand box is used for accommodating sand and a workpiece; the core pipe is vertically arranged in the sand box and used for forming a mounting hole in the propeller; the driving assembly is arranged on the sand box and used for driving the core pipe to rotate. After casting and forming, the propeller is sleeved on the core pipe, the driving assembly acts to enable the core pipe to rotate, then the propeller is driven to rotate, sand in the sand box is stirred, the sand continuously rolls, and the sand is in contact with air to be rapidly cooled.)

1. The utility model provides a propeller casting equipment which characterized in that: comprises a sand box (3), a core pipe (4) and a driving component (5);

the upper end of the sand box (3) is provided with an opening, and the sand box (3) is used for accommodating sand and workpieces;

the core pipe (4) is vertically arranged in the sand box (3), and the core pipe (4) is used for forming a mounting hole (21) on the propeller;

the driving assembly (5) is arranged on the sand box (3) and is used for driving the core pipe (4) to rotate.

2. The propeller casting apparatus of claim 1, wherein: the periphery of the core pipe (4) is provided with a convex strip (41), and the convex strip (41) extends along the bus direction of the core pipe (4).

3. The propeller casting apparatus of claim 1, wherein: the driving component (5) can drive the core pipe (4) to rotate in two directions.

4. The propeller casting apparatus of claim 1, wherein: the driving assembly (5) comprises a worm wheel (52), a worm (53) and a motor (54);

the worm wheel (52) is rotatably connected with the sand box (3), and the worm wheel (52) is coaxially connected with the core pipe (4);

the worm (53) is rotatably connected with the sand box (3), and the worm (53) is meshed with the worm wheel (52);

the motor (54) is connected with the sand box (3), and an output shaft of the motor (54) is coaxially connected with the worm (53).

5. The propeller casting apparatus of claim 4, wherein: the driving assembly (5) further comprises a screw rod (55), a limiting sleeve (56) and a limiting piece;

the screw rod (55) is coaxially embedded in the worm gear (52) and forms a screw rod pair; the screw rod (55) is coaxially connected with the core pipe (4);

the limiting sleeve (56) is coaxially sleeved on the periphery of the screw rod (55), and the limiting sleeve (56) and the screw rod (55) axially slide and are circumferentially fixed;

a clamping block (561) is arranged at one end, facing the worm wheel (52), of the limiting sleeve (56), and a clamping groove (521) for the clamping block (561) to be embedded is formed in the worm wheel (52); when the clamping block (561) is embedded into the clamping groove (521), the limiting sleeve (56) and the worm wheel (52) are fixed in the circumferential direction.

6. The propeller casting apparatus of claim 5, wherein: a limiting surface (551) is arranged on the periphery of the screw rod (55), at least two points on the limiting surface (551) have different distances from the axis of the screw rod (55), and the distance from any point on the limiting surface (551) to the axis of the screw rod (55) is smaller than the radius of the screw rod (55);

the inner periphery of the limiting sleeve (56) is in sliding fit with the limiting surface (551).

7. The propeller casting apparatus of claim 5, wherein: the driving assembly (5) further comprises a pull rope (57), one end of the pull rope (57) is connected with the sand box (3), and the other end of the pull rope (57) is connected with one side, away from the worm wheel (52), of the limiting sleeve (56).

8. The propeller casting apparatus of claim 7, wherein: the driving assembly (5) further comprises a spacer bush (58), the spacer bush (58) is connected with the sand box (3), the spacer bush (58) is coaxially sleeved on the outer periphery of the screw rod (55), and a gap is formed between the inner periphery of the spacer bush (58) and the outer periphery of the screw rod (55);

the spacer bush (58) is positioned on one side of the limiting bush (56) which is far away from the worm wheel (52); when the limiting sleeve (56) is abutted to the spacer sleeve (58), the clamping block (561) is separated from the clamping groove (521).

Technical Field

The application relates to the field of casting, especially relates to a propeller casting equipment.

Background

The propeller is widely applied to ships. The propeller is a propeller which rotates in water by means of blades to convert the rotational power of an engine into propulsive force,

generally, the propeller production molding is usually performed by sand casting. And the propeller may be connected to the hub by two or more blades. The blades are connected to the periphery of the hub, and the hub is coaxially provided with a mounting hole which is used for being sleeved on a power shaft driven by an engine and enabling the hub to rotate along with the power shaft.

Meanwhile, a key groove can be formed in the inner periphery of the mounting hole so as to be connected with the power shaft through the key groove and be circumferentially fixed with the power shaft.

In view of the above-mentioned related art, the inventor believes that the sand has a high temperature after being cast, and a long time is needed for waiting for the sand to cool, which affects the production efficiency.

Disclosure of Invention

In order to accelerate the cooling of the sand to improve production efficiency, the present application provides a propeller casting apparatus.

The application provides a propeller casting equipment adopts following technical scheme:

a propeller casting device comprises a sand box, a core pipe and a driving assembly;

the upper end of the sand box is provided with an opening, and the sand box is used for accommodating sand and a workpiece;

the core pipe is vertically arranged in the sand box and used for forming a mounting hole in the propeller;

the driving assembly is arranged on the sand box and used for driving the core pipe to rotate.

Through adopting above-mentioned technical scheme, after the casting shaping, the screw cup joints on the core pipe, and drive assembly moves for the core pipe rotates, and then the drive screw rotates, stirs the grit in the sand box, and the grit constantly rolls, and the contact air is with quick cooling.

Optionally, the periphery of the core tube is provided with a convex strip, and the convex strip extends along the bus direction of the core tube.

By adopting the technical scheme, the convex strips are used for preforming (reserving machining allowance) of the key grooves on the propeller, so that materials can be saved; meanwhile, the raised lines are embedded in the propellers, and the central pipe is fixed with the propellers in the circumferential direction, so that the rotating central pipe drives the propellers to rotate.

Optionally, the driving assembly may drive the core tube to rotate bidirectionally.

By adopting the technical scheme, if the propeller rotates rightwards, the driving core tube and the propeller rotate clockwise when viewed from top after casting, sand is turned upwards by the paddles and falls down between two adjacent paddles, so that the sand rolls in the sand box, and cooling of the sand is accelerated; after cooling is completed, the core tube and the propeller are driven to rotate anticlockwise, the paddle pushes the sand downwards, at the moment, the sand box blocks the sand to move downwards, the reaction force of the sand pushes the propeller to move upwards, the propeller is further enabled to move upwards and be exposed out of the sand, and therefore people can take out the propeller conveniently.

Optionally, the driving assembly includes a worm wheel, a worm and a motor;

the worm gear is rotationally connected with the sand box and is coaxially connected with the core tube;

the worm is rotationally connected with the sand box and meshed with the worm wheel;

the motor is connected with the sand box, and an output shaft of the motor is coaxially connected with the worm.

Through adopting above-mentioned technical scheme, utilize turbine worm mechanism, realize reducing rotational speed and increase moment, and then in order to drive the screw stirring grit.

Optionally, the driving assembly further includes a screw rod, a limiting sleeve and a limiting member;

the screw rod is coaxially embedded in the worm gear and forms a screw rod pair; the lead screw is coaxially connected with the core pipe;

the limiting sleeve is coaxially sleeved on the periphery of the screw rod, and the limiting sleeve and the screw rod axially slide and are circumferentially fixed;

a clamping block is arranged at one end, facing the worm wheel, of the limiting sleeve, and a clamping groove for the clamping block to be embedded in is formed in the worm wheel; when the clamping block is embedded into the clamping groove, the limiting sleeve is circumferentially fixed with the worm wheel.

By adopting the technical scheme, if the propeller is rotated rightwards, after casting and forming, the limiting sleeve is abutted against the worm wheel, the clamping block is embedded into the clamping groove, at the moment, the worm wheel, the limiting sleeve and the screw rod are fixed in the circumferential direction, the motor acts, and the core pipe and the propeller are driven to rotate clockwise when looking down, so that sand rolls in the sand box, and cooling of the sand is accelerated; after the cooling is finished, the limiting sleeve is slid to enable the clamping block to be separated from the clamping groove, at the moment, the limiting sleeve rotates to limit the rotation of the screw rod, the motor continues to drive the worm gear to rotate, the screw rod moves upwards through the screw rod pair, the core pipe and the propeller on the periphery of the core pipe move upwards along with the screw rod, and the propeller extends out of the sand box, so that a person can take out the propeller conveniently.

Optionally, a limiting surface is arranged on the periphery of the screw rod, at least two points on the limiting surface have different distances from the axis of the screw rod, and the distance from any point on the limiting surface to the axis of the screw rod is smaller than the radius of the screw rod;

the inner periphery of the limiting sleeve is in sliding fit with the limiting surface.

Through adopting above-mentioned technical scheme, realize that the axial slip is fixed with circumference between stop collar and the lead screw.

Optionally, the driving assembly further comprises a pull rope, one end of the pull rope is connected with the sand box, and the other end of the pull rope is connected with one side of the limiting sleeve, which deviates from the worm wheel.

By adopting the technical scheme, after casting and forming, the limiting sleeve is abutted against the worm wheel, the clamping block is embedded into the clamping groove, at the moment, the worm wheel, the limiting sleeve and the screw rod are fixed in the circumferential direction, the motor acts to drive the worm wheel to rotate, the rotating limiting sleeve drives the inhaul cable to wind, and in the process, the propeller rotates to stir sand; along with the coiling of cable tighten up, the worm wheel is kept away from gradually to the stop collar to make the fixture block break away from the draw-in groove, and this moment, the rotation of cable restriction stop collar, and then the rotation of restriction lead screw, simultaneously, but circumferential direction between worm wheel and the lead screw, and then realize utilizing the vice drive lead screw of lead screw to shift up, the screw of core pipe and periphery shifts up thereupon, makes the screw stretch out the sand box, so that personnel take out the screw.

Optionally, the driving assembly further comprises a spacer bush, the spacer bush is connected with the sand box, the spacer bush is coaxially sleeved on the outer periphery of the screw rod, and a gap is formed between the inner periphery of the spacer bush and the outer periphery of the screw rod;

the spacing sleeve is positioned on one side of the limiting sleeve, which is far away from the worm wheel; when the limiting sleeve is abutted to the spacer sleeve, the clamping block is separated from the clamping groove.

By adopting the technical scheme, the rotating limiting sleeve drives the inhaul cable to be wound to the periphery of the spacer sleeve, so that interference between the inhaul cable and the screw rod is avoided; simultaneously, when the stop collar butt to the spacer, the cooperation cable realizes restricting the rotation of stop collar to the rotation of restriction lead screw.

In summary, the present application includes at least one of the following beneficial technical effects:

1. after casting and forming, the propeller is sleeved on the core pipe, the driving assembly acts to enable the core pipe to rotate, further the propeller is driven to rotate, sand in the sand box is stirred, and the sand continuously rolls and contacts air to be rapidly cooled;

2. after cooling is completed, the driving assembly drives the propeller to move upwards in the sand and expose, and therefore people can take out the propeller conveniently.

Drawings

Fig. 1 is a schematic view of the structure of a propeller.

Fig. 2 is a schematic view of the entire structure of embodiment 1.

Fig. 3 is a schematic structural view of the driving unit in embodiment 1.

FIG. 4 is a schematic view showing a connection structure of the core tube and the worm wheel in embodiment 1.

Fig. 5 is a schematic view of the entire structure in embodiment 2.

Fig. 6 is a schematic structural view of the driving unit in embodiment 2.

Fig. 7 is a sectional view of the driving unit in embodiment 2.

FIG. 8 is a schematic view showing a connection structure of the core tube and the worm wheel in embodiment 2.

Description of reference numerals: 1. a paddle; 2. a hub; 21. mounting holes; 22. a keyway; 3. a sand box; 31. a sheath; 4. a core tube; 41. a convex strip; 42. a support ring; 5. a drive assembly; 51. a connecting shaft; 52. a worm gear; 521. a card slot; 53. a worm; 54. a motor; 55. a screw rod; 551. a limiting surface; 56. a limiting sleeve; 561. a clamping block; 57. a cable; 58. a spacer sleeve; 6. a base plate; 61. and a support sleeve.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

Referring to fig. 1, the propeller includes a blade 1 and a hub 2. The blades 1 are arranged around the propeller hub 2 at intervals in the circumferential direction, the propeller is enabled to rotate rightwards, the propeller hub 2 is coaxially provided with a mounting hole 21 for being sleeved to a power shaft, and a key groove 22 is formed in the inner circumference of the mounting hole 21 so as to achieve circumferential fixing of the propeller between the power shaft.

The embodiment of the application discloses propeller casting equipment.

Example 1

Referring to fig. 1 and 2, the propeller casting apparatus includes a sand box 3 and a core tube 4.

The upper end of the sand box 3 is provided with an opening; the core tube 4 is vertically arranged in the sand box 3; in the casting, the core tube 4 is used for forming the mounting hole 21, and the rib 41 is provided on the outer periphery of the core tube 4, and the rib 41 extends along the generatrix of the core tube 4, so that the rib 41 is used for forming the key groove 22.

Meanwhile, for the subsequent processing, the diameter of the core tube 4 is smaller than the inner diameter of the mounting hole 21, and the size of the convex strip 41 is also smaller than that of the key groove 22, so that the processing allowance is left on the workpiece.

Referring to fig. 2 and 3, the propeller casting apparatus further includes a driving assembly 5, and the driving assembly 5 is used for driving the core tube 4 to rotate bidirectionally. The driving assembly 5 is located outside the sand box 3 and is connected to the lower end face of the sand box 3, and the driving assembly 5 comprises a connecting shaft 51, a worm wheel 52, a worm 53 and a motor 54.

The connecting shaft 51 penetrates through the sand box 3 and extends upwards into the sand box 3, the upper end of the connecting shaft 51 is coaxially and fixedly connected with the core tube 4, and meanwhile, the connecting shaft 51 is rotatably connected with the sand box 3; the worm wheel 52 is coaxially and fixedly connected to the lower end of the connecting shaft 51; a worm 53 is engaged with the outer periphery of the worm wheel 52, and an output shaft of a motor 54 is coaxially connected to one end of the worm 53.

After casting, when looking down, the motor 54 rotates forward to drive the core tube 4 and the propeller to rotate clockwise, the sand is turned upwards by the paddles, and falls down between two adjacent paddles, so that the sand rolls in the sand box 3, and the cooling of the sand is accelerated.

Referring to fig. 3 and 4, the connecting shaft 51 has a diameter smaller than that of the core tube 4, thereby forming a step at the lower end of the core tube 4 for sliding against the inner wall of the sand box 3. When the sand is turned upwards by the paddle, the reverse acting force of the sand to the paddle is downward, and the end surface of the propeller hub 2 and the end surface of the core tube 4 are tightly pressed against the sand box 3 to bear the reverse acting force.

Meanwhile, in the process that the blades turn the sand upwards, the sand attached to the surface of the propeller is synchronously removed, and meanwhile, the propeller is gradually cooled, so that a gap is formed between the propeller and the core tube 4, namely the propeller and the core tube 4 can axially slide; after cooling is completed, the motor 54 rotates in the reverse direction to drive the core tube 4 and the propeller to rotate counterclockwise, the paddle pushes the sand downward, at this time, the sand box 3 blocks the sand from moving downward, the reaction force of the sand pushes the propeller to move upward, and the propeller moves upward in the sand and is exposed.

Example 2

Referring to fig. 5, the propeller casting apparatus includes a sand box 3 and a core tube 4.

The upper end of the sand box 3 is provided with an opening; the core tube 4 is vertically arranged in the sand box 3; in the casting, the core tube 4 is used for forming the mounting hole 21, and the rib 41 is provided on the outer periphery of the core tube 4, and the rib 41 extends along the generatrix of the core tube 4, so that the rib 41 is used for forming the key groove 22.

Meanwhile, for the subsequent processing, the diameter of the core tube 4 is smaller than the inner diameter of the mounting hole 21, and the size of the convex strip 41 is also smaller than that of the key groove 22, so that the processing allowance is left on the workpiece.

Referring to fig. 6 and 7, the propeller casting apparatus further includes a bottom plate 6, the bottom plate 6 is located right below the sand box 3, and a driving assembly 5 is arranged on the bottom plate 6, and the driving assembly 5 is used for driving the core tube 4 to rotate in a single direction. The driving assembly 5 is located outside the sand box 3 and is connected to the lower end face of the sand box 3, and the driving assembly 5 comprises a worm gear 52, a worm 53 and a motor 54. The worm wheel 52 is coaxially connected with the core tube 4, the worm 53 is meshed with the worm wheel 52, and the output shaft of the motor 54 is coaxially connected with the worm 53.

Referring to fig. 7 and 8, the driving assembly 5 further includes a screw 55, a stop collar 56, and a cable 57. The upper end of the screw 55 penetrates through the sand box 3 and is coaxially connected with the lower end of the core tube 4; the screw rod 55 is coaxially inserted in the worm gear 52 and forms a screw rod pair; the lower end of the screw rod 55 penetrates through the bottom plate 6; meanwhile, the screw 55 has a rotation direction opposite to that of the propeller, that is, the screw 55 has a left rotation direction in the present embodiment.

The periphery of the screw rod 55 is further provided with a limiting surface 551, at least two points on the limiting surface 551 have different distances to the axis of the screw rod 55, and the distance from any point on the limiting surface 551 to the axis of the screw rod 55 is smaller than the radius of the screw rod 55. In this embodiment, the position-limiting surface 551 is a plane and parallel to the axis of the screw 55.

Stop collar 56 is located worm wheel 52's top to cup joint in the periphery of lead screw 55 along axial sliding, and laminating of stop collar 56 in spacing face 551, realize that the circumference between stop collar 56 and the lead screw 55 is fixed, simultaneously, the lower terminal surface department of stop collar 56 is equipped with four fixture blocks 561 along the circumference interval, is equipped with on the worm wheel 52 and supplies fixture block 561 to inlay the draw-in groove 521 of establishing, then when fixture block 561 inlays to the draw-in groove 521, circumference is fixed between stop collar 56 and the worm wheel 52.

Two pull cables 57 are arranged and are positioned at two sides of the screw rod 55, the upper end of each pull cable 57 is fixedly connected with the sand box 3, and the lower end of each pull cable 57 is fixedly connected with the upper end of the limiting sleeve 56.

Meanwhile, the driving assembly 5 further comprises a spacer 58 sleeved on the outer periphery of the screw 55, the upper end of the spacer 58 is fixedly connected with the sand box 3, and a gap is formed between the inner periphery of the spacer 58 and the outer periphery of the screw 55; the cable 57 is located outside the spacer 58, so that the periphery of the spacer 58 is used for the cable 57 to wind, the lower end of the spacer 58 is used for abutting against the limiting sleeve 56, and when the limiting sleeve 56 abuts against the lower end of the spacer 58, the fixture block 561 is separated from the clamping groove 521.

Referring to fig. 6 and 7, the outer diameter of the stop collar 56 is smaller than the diameter of the worm wheel 52, the bottom of the sand box 3 is further provided with a sheath 31, the sheath 31 is sleeved on the peripheries of the pull rope 57, the spacer 58 and the stop collar 56, and the lower end of the spacer 58 is in sliding contact with the upper end face of the worm wheel 52. The bottom plate 6 is further provided with a support sleeve 61, the support sleeve 61 is sleeved on the periphery of the screw rod 55, and the upper end of the support sleeve 61 is in sliding contact with the lower end face of the worm wheel 52.

The periphery of the lower end of the core tube 4 is also provided with a support ring 42, and the outer diameter of the support ring 42 is larger than that of the core tube 4, so as to support the propeller.

The implementation principle of the embodiment 2 is as follows: after casting, the limiting sleeve 56 abuts against the worm wheel 52, the clamping block 561 is embedded into the clamping groove 521, at the moment, the worm wheel 52, the limiting sleeve 56 and the screw rod 55 are fixed in the circumferential direction, the motor 54 acts, and the core tube 4 and the propeller are driven to rotate clockwise in a overlooking mode, so that sand rolls in the sand box 3, and cooling of the sand is accelerated; in the process, the rotating limiting sleeve 56 drives the inhaul cable 57 to be wound to the periphery of the spacer 58, and along with the winding and tightening of the inhaul cable 57, the limiting sleeve 56 is gradually far away from the worm wheel 52, and the clamping block 561 is separated from the clamping groove 521; when the clamping block 561 is separated from the clamping groove 521, cooling is completed;

after cooling, the motor 54 continues to drive the worm wheel 52 to rotate, the limiting sleeve 56 moves upwards to abut against the spacer 58, the spacer 58 and the inhaul cable 57 wound and tightened on the periphery of the spacer 58 are matched with each other to limit rotation of the limiting sleeve 56, at the moment, rotation of the lead screw is limited, when the motor 54 continues to drive the worm wheel 52 to rotate, the lead screw 55 moves upwards through the lead screw pair, and the core tube 4, the support ring 42 and the propeller on the core tube move upwards along with the lead screw, so that the propeller extends out of the sand box 3, and a person can take;

then the motor 54 rotates reversely, at the moment, no propeller is arranged on the core tube 4, the rotation resistance is small, the friction force between the worm gear 52 and the core tube 4 enables the core tube 4 to rotate reversely along with the worm gear 52, the limiting sleeve 56 drives the inhaul cable 57 to be separated from the spacer 58, the limiting sleeve 56 moves downwards, the motor 54 continues to rotate reversely until the inhaul cable 57 winds to the periphery of the spacer 58 reversely and limits the rotation of the limiting sleeve 56 again, at the moment, the worm gear 52 rotates reversely, and the screw rod 55 moves downwards to reset through the screw rod pair;

finally, the motor 54 rotates forward by a certain angle until the limiting sleeve 56 abuts against the worm wheel 52, and the clamping block 561 is embedded into the clamping groove 521 to prepare for cooling the sand molded by the next casting.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.