CN111941755A

CN111941755A - Injection molding for rotor assembly of direct-current brushless motor and injection molding method thereof

Info

Publication number: CN111941755A
Application number: CN202010895184.8A
Authority: CN
Inventors: 王和平; 李伟德
Original assignee: Em Tech Co ltd
Current assignee: Em Tech Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-11-17

Abstract

The invention discloses an injection molding method for a direct current brushless motor rotor assembly, which comprises an injection molding machine table, wherein a partition plate is fixedly arranged on a table top of the injection molding machine table, an injection molding rack is fixedly arranged on the table top of the injection molding machine table and positioned on the left side of the partition plate, a mold clamping table and a mold stripping table are fixedly arranged on the table top of the injection molding machine table and positioned on the right side of the partition plate, and an injection mold is arranged on the mold clamping table.

Description

Injection molding for rotor assembly of direct-current brushless motor and injection molding method thereof

Technical Field

The invention belongs to the technical field of injection molds, and particularly relates to injection molding for a rotor assembly of a direct-current brushless motor and an injection molding method thereof.

Background

The injection mold has a wide application in manufacturing industry, and its product types are various, but its functionality is to give the complete structure of plastic product, and the motor rotor needs to go through the injection molding process during production in order to make it reach the specified use requirement.

But current injection mold is because structural design is too complicated when carrying out electric motor rotor injection moulding, leads to the junction to easily appear the skew, influences the precision of moulding plastics, like patent application number 201821390840.3 discloses a precision rotor injection moulding mold, include: the device comprises a lower die, a positioning sleeve and an upper die; the lower die base is arranged at the bottom end of the lower die and is connected with the lower die in a bolt fixing mode; the positioning sleeve is arranged at the top end of the lower die and is connected with the lower die in a bolt fixing mode; the upper die is arranged at the upper part of the positioning sleeve and is connected with the positioning sleeve in a clamping manner; the upper die base sets up on the top of last mould, and the upper die base is connected through the bolt fastening mode with last mould, has compact structure, and the precision of moulding plastics is high, saves the cost of manufacture to rotor inserts is fixed and sealed effectual, but the current DC brushless motor rotor subassembly that is used for has following not enough at the in-process of moulding plastics:

1. the existing rotor assembly for the direct-current brushless motor has complex operations of mold opening and mold locking for an injection mold in the injection molding process, needs to manually screw a locking screw to lock or open the mold, and wastes time and labor;

2. the existing direct-current brushless motor rotor assembly needs manual material taking for a workpiece after injection molding in the injection molding process, the manual material taking is low in efficiency, and the workpiece has certain heat in the mold opening process, so that the manual material taking is very inconvenient.

Disclosure of Invention

The present invention is directed to an injection molding method for a rotor assembly of a dc brushless motor, and the injection molding method is used to solve the problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

an injection molding machine for a direct-current brushless motor rotor assembly comprises an injection molding machine table, wherein a partition plate is fixedly arranged on a table top of the injection molding machine table, an injection molding rack is fixedly arranged on the table top of the injection molding machine table and positioned on the left side of the partition plate, a mold clamping table and a mold stripping table are fixedly arranged on the table top of the injection molding machine table and positioned on the right side of the partition plate, an injection mold is arranged on the mold clamping table, side plates are fixedly arranged at two ends of the bottom surface of the injection molding machine table, a first screw rod is fixedly arranged between the side plates on two sides, one end of the first screw rod penetrates through the side plates and is fixedly connected with an output end of a motor, the first motor is fixedly arranged on the outer side surface of each side plate, a first nut seat is connected to the first;

the mold clamping table comprises a U-shaped plate, a partition plate, a second screw rod, a second motor, a second nut seat, a connecting block, an L-shaped clamping plate, a limiting column, T-shaped sliding blocks and a transverse plate, sliding grooves are formed in two sides of a table top of the injection molding machine table along the horizontal direction, the T-shaped sliding blocks matched with the sliding grooves are respectively arranged on two sides of the bottom surface of the U-shaped plate, the U-shaped plate is connected in the sliding grooves in the two sides of the mold clamping table in a sliding mode through the T-shaped sliding blocks on the two sides of the bottom surface of the U-shaped plate, the T-shaped sliding blocks on the two sides of the bottom surface of the U-shaped plate are fixedly connected through the transverse plate, the partition plate is horizontally arranged inside the U-shaped plate, the second screw rod is horizontally arranged inside the U-shaped plate and below the partition plate, the second screw rod is opposite in thread turning directions at two ends of the central line, the two ends of the second screw rod are symmetrically provided with a second nut seat through threaded connection, the top surface of the second nut seat is fixedly provided with a connecting block, the surface of the partition plate is provided with a strip-shaped groove along the axis direction of the second screw rod, the connecting block penetrates through the strip-shaped groove and is fixedly connected with the bottom surface of the L-shaped clamping plate, and the horizontal plate surface of the L-shaped clamping plate is fixedly provided with a plurality of limiting columns;

the injection mold comprises a left module and a right module, wherein an injection molding cavity is formed in the surface, connected with the right module, of the left module, through holes matched with the limiting columns are formed in the bottom surfaces of the left module and the right module, and the left module and the right module are connected in the limiting columns of the L-shaped clamping plate in a clamping mode through the through holes in the bottom surfaces.

As a further scheme of the invention: the injection molding machine comprises an injection molding machine table, and is characterized in that the injection molding machine table is fixedly arranged at one end of the injection molding machine table, the injection molding machine table comprises an injection base plate and a movable plate, the two sides of the injection base plate are respectively provided with a strip-shaped plate, a guide groove for sliding the movable plate is formed in the strip-shaped plate, the movable plate is connected to the strip-shaped plates on the two sides of the injection base plate in a sliding mode, a first vertical plate and a second vertical plate are vertically arranged on the two sides of the surface of the movable plate respectively, an injection oil cylinder is fixedly arranged on the outer side surface of the first vertical plate, a piston rod of the injection oil cylinder penetrates through the first vertical plate and is connected into an injection tube cavity, a feeding hopper is fixedly arranged on the second vertical plate, a discharge hole of the.

As a still further scheme of the invention: an L-shaped pallet is fixedly arranged at one end of the injection molding machine table, an ejection table is fixedly arranged on the table top of the L-shaped pallet and comprises a U-shaped frame and four frames, the four frames are fixedly arranged on the table top of a horizontal plate of the L-shaped pallet and penetrate through the horizontal table top of the L-shaped pallet, a top plate is fixedly arranged on the top surface of the four frames, a second hydraulic cylinder is fixedly arranged on the top surface of the top plate, a piston rod of the second hydraulic cylinder penetrates through the top plate and is fixedly connected with the top surface of a guide plate, sliding grooves are formed in two sides of the interior of the four frames along the vertical direction, sliding blocks matched with the sliding grooves are arranged on two sides of the guide plate, the guide plate is slidably connected into the sliding grooves in two sides of the four frames through the sliding blocks on two sides, connecting columns are respectively arranged at two ends of the bottom;

a sliding rod is horizontally arranged inside the U-shaped rack, a limiting column is fixedly arranged at the center of the sliding rod, a left moving block and a right moving block are symmetrically arranged at two ends of the sliding rod relative to the limiting column, a connecting plate is hinged to the left moving block and the right moving block, the other end of the connecting plate is hinged to a nut seat, the nut seat is connected to a lower threaded section of a rotating shaft through threads, the top end of the rotating shaft penetrates through a horizontal plate of the U-shaped rack and is fixedly connected with an output end of a third motor, the third motor is fixedly installed on the surface of the U-shaped rack, a left clamping arm is arranged on the bottom surface of the left moving block, and a right clamping arm is arranged on;

the structure of the left clamping arm is completely consistent with that of the right clamping arm, the left clamping arm comprises a left moving block, a first connecting arm is horizontally arranged at the bottom of the front side face and the bottom of the rear side face of the left moving block, a second connecting arm is connected to one end of the first connecting arm in a rotating mode, a third connecting arm is connected to the other end of the second connecting arm in a rotating mode, a fourth connecting arm is connected to the other end of the first connecting arm in a rotating mode, the third connecting arm is connected to the side face of the clamping block in a rotating mode with the other end of the fifth connecting arm in a rotating mode, a connecting rod is arranged between the second connecting arms on two sides of the left moving block, a connecting rod is also arranged between the third connecting arms on.

As a still further scheme of the invention: the axis of the rotating shaft along the horizontal direction is divided into an upper smooth section and a lower threaded section.

As a still further scheme of the invention: the fixture block is in a triangular prism structure, and the side face, abutted against the rotor assembly, of the fixture block is vertical to the rotor assembly.

As a still further scheme of the invention: the injection molding machine is characterized in that guide rails are arranged between the side plates at two ends of the bottom surface of the injection molding machine table, the two guide rails are symmetrically arranged in the horizontal direction relative to the central line of the screw rod I, through holes matched with the guide rails are formed in two sides of the nut seat I, and the nut seat I is connected to the guide rails through the through holes in the two sides in a sliding mode.

As a still further scheme of the invention: the partition plate is provided with a through hole for the injection tube cavity to pass through.

As a still further scheme of the invention: an injection molding method for injection molding of a rotor assembly of a direct current brushless motor comprises the following specific steps:

the method comprises the following steps: respectively installing a left module and a right module of an injection mold on L-shaped clamping plates at two ends of a mold clamping table, clamping through holes at the bottoms of the left module and the right module in limiting columns of the L-shaped clamping plates, driving a screw rod II to rotate through a motor II, driving nut seats II at two ends to move oppositely through the screw rod II, driving the L-shaped clamping plates to compress and lock the injection mold through the nut seats II, and completing the fixation of the injection mold;

step two: according to the size of the injection mold, a piston rod is driven by a hydraulic cylinder I to push a movable plate to move on an injection base plate, so that the injection position of an injection tube cavity is adjusted in the horizontal direction, a material entering the injection tube cavity from a feed hopper is injected into the injection mold through an injection oil cylinder, the injection mold is cast, and a rough blank of a rotor assembly of the direct-current brushless motor is obtained;

step three: after the injection mold finishes injection molding, the screw rod I is driven to rotate by the motor I, the screw rod I drives the nut seat I to move in the horizontal direction, the nut seat drives the mold clamping table to move to the position below the L-shaped pallet, the screw rod II is driven to rotate by the motor II, the nut seats II at the two ends are driven to move in reverse directions by the screw rod II, so that the L-shaped clamping plates at the two ends of the mold clamping table pull the left module and the right module towards two sides, the mold opening of the injection mold is realized, the piston rod is driven by the hydraulic cylinder II to push the guide plate to move downwards, the guide plate pushes the U-shaped pallet to move downwards on the L-shaped pallet, the rotating shaft is driven by the motor III to rotate, the nut seat III moves upwards in the lower threaded section of the rotating shaft, the connecting plates at the two sides of the nut seat III drive the left moving block and the right moving block to move towards the middle position, and the left clamping arm and the right clamping, and in the process that the left clamping arm and the right clamping arm clamp the DC brushless motor rotor assembly, the piston rod is driven by the hydraulic cylinder II to pull the guide plate to be lifted upwards, so that the mold taking of the DC brushless motor rotor assembly is completed.

Compared with the prior art, the invention has the beneficial effects that:

1. in the installation process of the injection mold, a left module and a right module of the injection mold are respectively installed on L-shaped clamping plates at two ends of a mold clamping table, through holes at the bottoms of the left module and the right module are clamped in limiting columns of the L-shaped clamping plates, a screw rod II is driven by a motor II to rotate, the screw rod II drives nut seats II at two ends to move oppositely, the nut seats II drives the L-shaped clamping plates to tightly press and lock the injection mold, the injection mold is fixed, after the injection mold is injected, the screw rod I is driven by the motor I to rotate, the screw rod I drives the nut seats I to move in the horizontal direction, the nut seats drive the mold clamping table to move below the L-shaped clamping table, the screw rod II drives the nut seats II at two ends to move reversely by the rotation of the motor II, and therefore the L-shaped clamping plates at two ends of the mold clamping table pull the left module and the right module to two sides, the mold opening of the injection mold is realized, so that the traditional manual locking is abandoned for the mold closing and opening of the injection mold, the working strength of operators is reduced, the mold opening and closing of the injection mold are faster, and the injection efficiency of the direct-current brushless motor rotor assembly is improved;

2. the piston rod is driven by the hydraulic cylinder II to push the guide plate to move downwards, the guide plate pushes the U-shaped frame to move downwards on the L-shaped pallet, the rotating shaft is driven by the motor III to rotate, the nut seat III moves upwards in the lower threaded section of the rotating shaft, so that the connecting plates on the two sides of the nut seat III drive the left moving block and the right moving block to move towards the middle position, the direct-current brushless motor rotor assembly falling on the partition plate is clamped by the left clamping arm and the right clamping arm, in the clamping process of the direct-current brushless motor rotor assembly by the left clamping arm and the right clamping arm, the guide plate is driven by the hydraulic cylinder II to lift upwards by the drive piston rod of the hydraulic cylinder II, the mold taking of the direct-current brushless motor rotor assembly is completed, and the injection molding efficiency of the direct-current brushless motor rotor assembly is improved and the safety of the mold taking is also improved by automatically taking, the invention is safer and more efficient in the using process.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a perspective view of an injection molding machine.

Fig. 2 is a schematic structural view of a mold clamping table in an injection molding machine table.

FIG. 3 is a schematic structural diagram of a first nut seat in an injection molding machine.

Fig. 4 is a schematic structural diagram of an ejector in an injection molding machine.

Fig. 5 is a schematic structural diagram of a U-shaped frame in an injection molding machine.

FIG. 6 is a schematic view of the structure of an injection mold in an injection molding machine station.

In the figure: the injection molding machine comprises an injection molding machine table 1, a sliding groove 101, a side plate 102, a first motor 103, a first screw 104, a first nut seat 105, a guide rail 106, a separation plate 107, an L-shaped plate table 108, an injection molding rack 2, an injection base plate 201, a strip-shaped plate 202, a moving plate 203, a first upright plate 204, an injection oil cylinder 205, a second upright plate 206, a first hydraulic cylinder 207, a feed hopper 208, a control valve 209, an injection pipe cavity 210, a mold clamping table 3, a U-shaped plate 301, a separation plate 302, a second screw 303, a second motor 304, a second nut seat 305, a connecting block 306, an L-shaped clamping plate 307, a limiting column 308, a T-shaped sliding block 309, a transverse plate 310, a strip-shaped groove 311, a mold stripping table 4, a U-shaped frame 5, a sliding rod 501, a left moving block 502, a right moving block 503, a connecting plate 504, a third nut seat 505, a rotating shaft 506, a third motor 507, a connecting column, A second connecting arm 702, a third connecting arm 703, a fourth connecting arm 704, a fifth connecting arm 705, a spring 706, a connecting rod 707, a fixture block 708, a right clamping arm 8, an injection mold 9, a left mold block 901, a right mold block 902, a positioning hole 903 and an injection mold cavity 904.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, in an embodiment of the present invention, an injection molding machine for a dc brushless motor rotor assembly includes an injection molding machine table 1, a partition plate 107 is fixedly disposed on a table top of the injection molding machine table 1, an injection molding frame 2 is fixedly disposed on the table top of the injection molding machine table 1 and on a left side of the partition plate 107, a mold clamping table 3 and a mold stripping table 4 are fixedly disposed on the table top of the injection molding machine table 1 and on a right side of the partition plate 107, an injection mold 9 is disposed on the mold clamping table 3, side plates 102 are fixedly disposed at two ends of a bottom surface of the injection molding machine table 1, a screw rod 104 is fixedly disposed between the side plates 102 on two sides, one end of the screw rod 104 penetrates through the side plate 102 and is fixedly connected to an output end of a motor 103, the motor 103 is fixedly disposed on an outer side surface of the side plate 102, the screw rod 104, the bottom surface of the first nut seat 105 is fixedly connected with the bottom surface of the transverse plate 310.

The die clamping table 3 comprises a U-shaped plate 301, a partition plate 302, a second screw 303, a second motor 304, a second nut seat 305, a connecting block 306, an L-shaped clamping plate 307, a limiting column 308, a T-shaped sliding block 309 and a transverse plate 310, sliding grooves 101 are arranged on two sides of the table top of the injection molding machine table 1 along the horizontal direction, T-shaped sliding blocks 309 matched with the sliding grooves 101 are respectively arranged on two sides of the bottom surface of the U-shaped plate 301, the U-shaped plate 301 is connected in a sliding groove 101 on two sides of the die clamping table 3 in a sliding mode through T-shaped sliding blocks 309 on two sides of the bottom surface, the T-shaped sliding blocks 309 on two sides of the bottom surface of the U-shaped plate 301 are fixedly connected through a transverse plate 310, a first screw 104 is driven to rotate through a first motor 103, thereby causing the screw rod one 104 to drive the nut seat one 105 to move in the horizontal direction, causing the nut seat one 105 to drive the transverse plate 310 to move in the horizontal direction, so that the transverse plate 310 drives the mold clamping table 3 to slide on the injection molding machine table 1 through the T-shaped sliding block 309.

A partition plate 302 is horizontally arranged inside the U-shaped plate 301, a second screw 303 is horizontally arranged inside the U-shaped plate 301 and below the partition plate 302, the screw turning directions of the two screws 303 along two ends of a central line direction are opposite, one end of the second screw 303 penetrates through a vertical plate on one side of the U-shaped plate 301 to be fixedly connected with an output end of a second motor 304, the second motor 304 is fixedly arranged on the outer side surface of the vertical plate on one side of the U-shaped plate 301, two nut seats 305 are symmetrically arranged along two ends of the central line direction through threaded connection, a connecting block 306 is fixedly arranged on the top surface of the second nut seat 305, a strip-shaped groove 311 is formed in the plate surface of the partition plate 302 along the axial direction of the second screw 303, the connecting block 306 penetrates through the strip-shaped groove 311 to be fixedly connected with the bottom surface of an L-shaped clamping plate 307, a plurality of limiting columns 308 are fixedly arranged on the horizontal plate surface of the L-, an injection molding cavity 904 is formed on the surface of the left module 901 and the right module 902 which are connected, through holes matched with the limiting columns 308 are formed on the bottom surfaces of the left module 901 and the right module 902, the left module 901 and the right module 902 are clamped in the limiting columns 308 of the L-shaped clamping plates 307 through the through holes on the bottom surfaces, the left module 901 and the right module 902 of the injection mold 9 are respectively arranged on the L-shaped clamping plates 307 at the two ends of the mold clamping table 3, the through holes at the bottoms of the left module 901 and the right module 902 are clamped in the limiting columns 308 of the L-shaped clamping plates 307, the screw rod II 303 is driven to rotate by the motor II 304, the screw rod II 303 drives the nut seats II 305 at the two ends to move oppositely, the nut seats II 305 drives the L-shaped clamping plates 307 to compress and lock the injection mold 9, the fixation of the injection mold 9 is completed, and after the injection mold 9 is injected, the screw rod I104 is driven to rotate by the, the first screw 104 drives the first nut seat 105 to move in the horizontal direction, the first nut seat 105 drives the mold clamping table 3 to move below the L-shaped plate table 108, the second screw 303 is driven by the second motor 304 to rotate, the second screw 303 drives the second nut seats 305 at two ends to move in opposite directions, and accordingly the L-shaped clamping plates 307 at two ends of the mold clamping table 3 pull the left module 901 and the right module 902 towards two sides, and mold opening of the injection mold 9 is achieved.

The injection molding bench 2 is fixedly arranged at one end of the injection molding bench 1, the injection molding bench 2 comprises an injection base plate 201 and a moving plate 203, two sides of the injection base plate 201 are respectively provided with a strip-shaped plate 202, the strip-shaped plate 202 is provided with a guide groove for the moving plate 203 to slide, the moving plate 203 is slidably connected to the strip-shaped plates 202 at two sides of the injection base plate 201, two sides of the surface of the moving plate 203 are respectively and vertically provided with a first vertical plate 204 and a second vertical plate 206, an injection oil cylinder 205 is fixedly arranged on the outer side surface of the first vertical plate 204, a piston rod of the injection oil cylinder 205 penetrates through the first vertical plate 204 and is connected into an injection tube cavity 210, a feed hopper 208 is fixedly arranged on the second vertical plate 206, a discharge port of the feed hopper 208 is connected to the injection tube cavity 210, a control valve 209 is arranged, the piston rod of the first hydraulic cylinder 207 abuts against the plate surface of the moving plate 203, the piston rod is driven by the first hydraulic cylinder 207 to push the moving plate 203 to move on the injection base plate 201 according to the size of the injection mold 9, so that the injection position of the injection tube cavity 210 in the horizontal direction is adjusted, the material entering the injection tube cavity 210 from the feed hopper 208 is injected into the injection mold 9 through the injection oil cylinder 205, the pouring of the injection mold 9 is achieved, and a rough blank of the rotor assembly of the direct-current brushless motor is obtained.

One end of the injection molding machine table 1 is fixedly provided with an L-shaped plate table 108, a tabletop of the L-shaped plate table 108 is fixedly provided with an ejection table 4, the ejection table 4 comprises a U-shaped frame 5 and a square frame 6, the square frame 6 is fixedly arranged on a tabletop of a horizontal plate of the L-shaped plate table 108 and penetrates through a horizontal tabletop of the L-shaped plate table 108, a top plate 603 is fixedly arranged on a top surface of the square frame 6, a hydraulic cylinder II 602 is fixedly arranged on the top surface of the top plate 603, a piston rod of the hydraulic cylinder II 602 penetrates through the top plate 603 and is fixedly connected with a top surface of a guide plate 509, two sides of the interior of the square frame 6 are provided with sliding grooves 601 along the vertical direction, two sides of the guide plate 509 are provided with sliding blocks matched with the sliding grooves 601, the guide plate 509 is slidably connected in the sliding grooves 601 of the two sides of the square frame 6 through the sliding, the connecting column 508 is fixedly connected with the top surface of the U-shaped frame 5, and the guide plate 509 is driven to move in the four frames 6 through the second hydraulic cylinder 602, so that the guide plate 509 drives the U-shaped frame 5 to move in the vertical direction.

A sliding rod 501 is horizontally arranged inside the U-shaped frame 5, a limit column is fixedly arranged at the center of the sliding rod 501, a left moving block 502 and a right moving block 503 are symmetrically arranged at two ends of the sliding rod 501 relative to the limit column, a connecting plate 504 is hinged on the left moving block 502 and the right moving block 503, the other end of the connecting plate 504 is hinged on a nut seat 505, the nut seat 505 is connected with a lower threaded section of a rotating shaft 506 through threads, the top end of the rotating shaft 506 penetrates through a horizontal plate of the U-shaped frame 5 and is fixedly connected with the output end of a motor three 507, the motor three 507 is fixedly arranged on the surface of the U-shaped frame 5, a left clamping arm 7 is arranged on the bottom surface of the left moving block 502, a right clamping arm 8 is arranged on the bottom surface of the right moving block 503, the structures of the left clamping arm 7 and the right clamping arm 8 are completely consistent, a first connecting arm 701 is horizontally arranged at the bottom of the front side and the rear side of the left moving block 502, a second connecting arm 702 is rotatably connected to one end of the first connecting arm 701, a third connecting arm 703 is rotatably connected to the other end of the second connecting arm 702, a fourth connecting arm 704 is rotatably connected to the other end of the first connecting arm 701, a fifth connecting arm 705 is rotatably connected to the other end of the fourth connecting arm 704, the third connecting arm 703 and the other end of the fifth connecting arm 705 are rotatably connected to the side of a clamping block 708, a connecting rod 707 is arranged between the second connecting arms 702 on the two sides of the left moving block 502, a connecting rod 707 is also arranged between the third connecting arms 703 on the two sides of the left moving block 502, the second connecting arms 702 and the connecting rod 707 on the third connecting arm 703 are fixedly connected through springs 706, a piston rod is driven by a second hydraulic cylinder 602 to push a guide, the rotating shaft 506 is driven to rotate by the third motor 507, the third nut seat 505 moves upwards in the lower threaded section of the rotating shaft 506, so that the connecting plates 504 on two sides of the third nut seat 505 drive the left moving block 502 and the right moving block 503 to move towards the middle position, the direct-current brushless motor rotor assembly falling on the partition plate 302 is clamped by the left clamping arm 7 and the right clamping arm 8, and in the clamping process of the direct-current brushless motor rotor assembly by the left clamping arm 7 and the right clamping arm 8, the piston rod is driven by the second hydraulic cylinder 602 to pull the guide plate 509 to lift upwards, and the module taking of the direct-current brushless motor rotor assembly is completed.

The shaft 506 is divided into an upper smooth section and a lower threaded section along the horizontal axis.

The fixture block 708 has a triangular prism structure, and the side surface of the fixture block 708 abutting against the rotor assembly is vertical to the rotor assembly.

Guide rails 106 are arranged between the side plates 102 at two ends of the bottom surface of the injection molding machine table 1, two guide rails 106 are arranged, the two guide rails 106 are symmetrically arranged in the horizontal direction relative to the central line of the first screw 104, through holes matched with the guide rails 106 are formed in two sides of the first nut seat 105, and the first nut seat 105 is connected to the guide rails 106 in a sliding mode through the through holes in the two sides.

The partition plate 107 is provided with a through hole for the injection tube cavity 210 to pass through.

An injection molding method for injection molding of a rotor assembly of a direct current brushless motor comprises the following specific steps:

the method comprises the following steps: respectively installing a left module 901 and a right module 902 of an injection mold 9 on L-shaped clamping plates 307 at two ends of a mold clamping table 3, clamping through holes at the bottoms of the left module 901 and the right module 902 in limiting columns 308 of the L-shaped clamping plates 307, driving a second screw 303 to rotate through a second motor 304, driving second nut seats 305 at two ends to move oppositely by the second screw 303, and driving the L-shaped clamping plates 307 to compress and lock the injection mold 9 by the second nut seats 305 to complete the fixation of the injection mold 9;

step two: according to the size of the injection mold 9, the piston rod is driven by the first hydraulic cylinder 207 to push the moving plate 203 to move on the injection base plate 201, so that the injection position of the injection tube cavity 210 is adjusted in the horizontal direction, the material entering the injection tube cavity 210 from the feed hopper 208 is injected into the injection mold 9 through the injection oil cylinder 205, the casting of the injection mold 9 is realized, and a rough blank of a rotor assembly of the direct-current brushless motor is obtained;

step three: after the injection mold 9 finishes injection molding, the screw rod I104 is driven to rotate by the motor I103, the screw rod I104 drives the nut seat I105 to move in the horizontal direction, the nut seat I105 drives the mold clamping table 3 to move below the L-shaped plate table 108, the screw rod II 303 is driven to rotate by the motor II 304, the screw rod II 303 drives the nut seat II 305 at the two ends to move in reverse directions, so that the L-shaped clamping plates 307 at the two ends of the mold clamping table 3 pull the left module 901 and the right module 902 towards two sides, mold opening of the injection mold 9 is realized, the piston rod is driven by the hydraulic cylinder II 602 to push the guide plate 509 to move downwards, the guide plate 509 pushes the U-shaped frame 5 to move downwards on the L-shaped plate table 108, the rotating shaft 506 is driven to rotate by the motor III 507, the nut seat III 505 moves upwards on the thread section at the lower part of the rotating shaft 506, so that the connecting plates 504 at the two sides of the nut seat III 505 drive the left moving, therefore, the direct current brushless motor rotor assembly falling on the partition plate 302 is clamped by the left clamping arm 7 and the right clamping arm 8, and in the clamping process of the direct current brushless motor rotor assembly by the left clamping arm 7 and the right clamping arm 8, the piston rod is driven by the hydraulic cylinder II 602 to pull the guide plate 509 to be lifted upwards, so that the module taking of the direct current brushless motor rotor assembly is completed.

The working principle is as follows: respectively installing a left module 901 and a right module 902 of an injection mold 9 on L-shaped clamping plates 307 at two ends of a mold clamping table 3, clamping through holes at the bottoms of the left module 901 and the right module 902 in limiting columns 308 of the L-shaped clamping plates 307, driving a screw rod II 303 to rotate through a motor II 304, driving a screw rod II 303 to drive nut bases II 305 at two ends to move oppositely, driving the L-shaped clamping plates 307 through the nut bases II 305 to tightly press and lock the injection mold 9, completing the fixation of the injection mold 9, driving a piston rod to push a moving plate 203 to move on an injection substrate 201 through a hydraulic cylinder I207, thereby realizing the adjustment of the injection position of an injection tube cavity 210 in the horizontal direction, injecting a material, which enters a feed hopper 208 into the injection mold 9 in the injection tube cavity 210, into the injection mold 9 through an injection cylinder 205, realizing the pouring of the injection mold 9, obtaining a rough blank of a rotor assembly of a DC brushless motor, driving a screw rod I, the first screw 104 drives the first nut seat 105 to move in the horizontal direction, the first nut seat 105 drives the mold clamping table 3 to move below the L-shaped plate table 108, the second screw 303 is driven to rotate by the second motor 304, the second screw 303 drives the second nut seats 305 at two ends to move in opposite directions, so that the L-shaped clamping plates 307 at two ends of the mold clamping table 3 pull the left module 901 and the right module 902 towards two sides, mold opening of the injection mold 9 is realized, the piston rod is driven by the second hydraulic cylinder 602 to push the guide plate 509 to move downwards, the guide plate 509 pushes the U-shaped frame 5 to move downwards on the L-shaped plate table 108, the rotating shaft 506 is driven by the third motor 507 to rotate, the third nut seat 505 moves upwards in the lower threaded section of the rotating shaft 506, so that the connecting plates 504 at two sides of the third nut seat 505 drive the left moving block 502 and the right moving block 503 to move towards the middle position, and the left clamping arm 7 and the right clamping arm 8 clamp the DC brushless motor rotor assembly falling on the partition plate 302, in the process of clamping the dc brushless motor rotor assembly by the left clamping arm 7 and the right clamping arm 8, the piston rod is driven by the second hydraulic cylinder 602 to pull the guide plate 509 to lift upwards, so as to complete the module taking of the dc brushless motor rotor assembly.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The injection molding machine for the rotor component of the direct-current brushless motor is characterized by comprising an injection molding machine table (1), wherein a partition plate (107) is fixedly arranged on a table top of the injection molding machine table (1), an injection molding rack (2) is fixedly arranged on the table top of the injection molding machine table (1) and positioned on the left side of the partition plate (107), a mold clamping table (3) and a mold stripping table (4) are fixedly arranged on the table top of the injection molding machine table (1) and positioned on the right side of the partition plate (107), an injection mold (9) is arranged on the mold clamping table (3), side plates (102) are fixedly arranged at two ends of the bottom surface of the injection molding machine table (1), a first screw rod (104) is fixedly arranged between the side plates (102) at two sides, one end of the first screw rod (104) penetrates through the side plate (102) and is fixedly connected with an output end of a first motor (103), the first motor (103) is fixedly, a first nut seat (105) is connected to the first screw rod (104) through threads, and the bottom surface of the first nut seat (105) is fixedly connected with the bottom surface of the transverse plate (310);

the mold clamping table (3) comprises a U-shaped plate (301), a partition plate (302), a second screw rod (303), a second motor (304), a second nut seat (305), a connecting block (306), an L-shaped clamping plate (307), a limiting column (308), a T-shaped sliding block (309) and a transverse plate (310), sliding grooves (101) are formed in two sides of a table board of the injection molding machine table (1) along the horizontal direction, the T-shaped sliding blocks (309) matched with the sliding grooves (101) are respectively arranged on two sides of the bottom surface of the U-shaped plate (301), the U-shaped plate (301) is connected in the sliding grooves (101) on two sides of the mold clamping table (3) in a sliding mode through the T-shaped sliding blocks (309) on two sides of the bottom surface of the U-shaped plate (301) through the transverse plate (310) in a fixed mode, the partition plate (302) is horizontally arranged in the U-shaped plate (301), the second screw rod (303) is horizontally arranged in the U-shaped plate (301) and below the partition, the screw threads at two ends of the second screw rod (303) along the center line direction are opposite in turning direction, one end of the second screw rod (303) penetrates through a vertical plate on one side of a U-shaped plate (301) and is fixedly connected with an output end of a second motor (304), the second motor (304) is fixedly arranged on the outer side surface of the vertical plate on one side of the U-shaped plate (301), the second screw rod (303) is symmetrically provided with second nut seats (305) along two ends of the center line through threaded connection, a connecting block (306) is fixedly arranged on the top surface of the second nut seat (305), a strip-shaped groove (311) is formed in the plate surface of the partition plate (302) along the axis direction of the second screw rod (303), the connecting block (306) penetrates through the strip-shaped groove (311) and is fixedly connected with the bottom surface of an L-shaped clamping plate (307), and a plurality of limiting columns (308);

the injection mold (9) comprises a left mold block (901) and a right mold block (902), an injection molding cavity (904) is formed in the surface, connected with the right mold block (902), of the left mold block (901), through holes matched with the limiting columns (308) are formed in the bottom surfaces of the left mold block (901) and the right mold block (902), and the left mold block (901) and the right mold block (902) are clamped in the limiting columns (308) of the L-shaped clamping plate (307) through the through holes in the bottom surfaces.

2. The injection molding machine for the DC brushless motor rotor assembly according to claim 1, wherein the injection molding rack (2) is fixedly arranged at one end of the injection molding machine (1), the injection molding rack (2) comprises an injection base plate (201) and a moving plate (203), two sides of the injection base plate (201) are respectively provided with a strip-shaped plate (202), the strip-shaped plate (202) is provided with a guide groove for the moving plate (203) to slide, the moving plate (203) is slidably connected to the strip-shaped plate (202) at two sides of the injection base plate (201), two sides of the plate surface of the moving plate (203) are respectively and vertically provided with a first vertical plate (204) and a second vertical plate (206), an injection cylinder (205) is fixedly arranged on the outer side surface of the first vertical plate (204), and a piston rod of the injection cylinder (205) penetrates through the first vertical plate (204) to be connected in an injection tube cavity (210), a feed hopper (208) is fixedly arranged on the second vertical plate (206), a discharge hole of the feed hopper (208) is connected to an injection tube cavity (210), a control valve (209) is arranged on the discharge hole of the feed hopper (208), a first hydraulic cylinder (207) is fixedly arranged on the table top of the injection molding machine table (1), and a piston rod of the first hydraulic cylinder (207) is abutted to the surface of the movable plate (203).

3. The injection molding machine for the DC brushless motor rotor assembly according to claim 1, wherein one end of the injection molding machine table (1) is fixedly provided with an L-shaped pallet (108), the table top of the L-shaped pallet (108) is fixedly provided with a demolding table (4), the demolding table (4) comprises a U-shaped frame (5) and a four-side frame (6), the four-side frame (6) is fixedly arranged on the table top of the horizontal plate of the L-shaped pallet (108) and penetrates through the horizontal table top of the L-shaped pallet (108), the top surface of the four-side frame (6) is fixedly provided with a top plate (603), the top surface of the top plate (603) is fixedly provided with a second hydraulic cylinder (602), the piston rod of the second hydraulic cylinder (602) penetrates through the top plate (603) and is fixedly connected with the top surface of a guide plate (509), two inner sides of the four-side frame (6) are provided with sliding grooves (601) along a vertical direction, the two sides of the guide plate (509) are provided with sliding blocks matched with the sliding grooves (601), the guide plate (509) is connected in the sliding grooves (601) on the two sides of the four-side frame (6) in a sliding mode through the sliding blocks on the two sides, two ends of the bottom surface of the guide plate (509) are respectively provided with a connecting column (508), and the connecting columns (508) are fixedly connected with the top surface of the U-shaped frame (5);

a sliding rod (501) is horizontally arranged in the U-shaped frame (5), a limiting column is fixedly arranged at the center of the sliding rod (501), and a left moving block (502) and a right moving block (503) are symmetrically arranged at the two ends of the sliding rod (501) relative to the limiting column, a connecting plate (504) is hinged on the left moving block (502) and the right moving block (503), the other end of the connecting plate (504) is hinged on a nut seat (505), the nut seat (505) is connected with the lower threaded section of the rotating shaft (506) through threads, the top end of the rotating shaft (506) penetrates through a horizontal plate of the U-shaped frame (5) and is fixedly connected with the output end of the motor III (507), the motor III (507) is fixedly arranged on the surface of the U-shaped frame (5), a left clamping arm (7) is arranged on the bottom surface of the left moving block (502), and a right clamping arm (8) is arranged on the bottom surface of the right moving block (503);

the structure of the left clamping arm (7) is completely consistent with that of the right clamping arm (8), the left clamping arm (7) comprises a left moving block (502), the bottoms of the front side surface and the rear side surface of the left moving block (502) are horizontally provided with a first connecting arm (701), one end of the first connecting arm (701) is rotatably connected with a second connecting arm (702), the other end of the second connecting arm (702) is rotatably connected with a third connecting arm (703), the other end of the first connecting arm (701) is rotatably connected with a fourth connecting arm (704), the other end of the fourth connecting arm (704) is rotatably connected with a fifth connecting arm (705), the third connecting arm (703) and the other end of the fifth connecting arm (705) are rotatably connected to the side surface of a clamping block (708), a connecting rod (707) is arranged between the second connecting arms (702) on the two sides of the left moving block (502), and a connecting rod (707) is also, and the connecting arm II (702) is fixedly connected with the connecting rod 707 on the connecting arm III (703) through a spring 706.

4. An injection molding for a rotor assembly of a brushless dc motor according to claim 3, wherein the axis of the rotating shaft (506) in the horizontal direction is divided into an upper smooth section and a lower threaded section.

5. An injection molding for a rotor assembly of a brushless dc motor according to claim 3, wherein the fixture block (708) has a triangular prism structure, and the side of the fixture block (708) abutting the rotor assembly is vertical to the rotor assembly.

6. The injection molding machine for the rotor assembly of the brushless DC motor according to claim 1, wherein two guide rails (106) are arranged between the side plates (102) at two ends of the bottom surface of the injection molding machine table (1), the two guide rails (106) are symmetrically arranged in the horizontal direction with respect to the center line of the first screw rod (104), through holes matched with the guide rails (106) are formed in two sides of the first nut seat (105), and the first nut seat (105) is slidably connected to the guide rails (106) through the through holes in the two sides.

7. An injection molding for a rotor assembly of a brushless dc motor according to claim 1, wherein the partition plate (107) is formed with a through hole for passing the injection tube cavity (210).

8. An injection molding method for injection molding of a rotor assembly of a direct current brushless motor is characterized by comprising the following specific steps:

the method comprises the following steps: respectively installing a left module (901) and a right module (902) of an injection mold (9) on L-shaped clamping plates (307) at two ends of a mold clamping table (3), clamping through holes at the bottoms of the left module (901) and the right module (902) in limiting columns (308) of the L-shaped clamping plates (307), driving a second screw rod (303) to rotate through a second motor (304), driving the second screw rod (303) to drive second nut seats (305) at two ends to move oppositely, driving the L-shaped clamping plates (307) to compress and lock the injection mold (9) through the second nut seats (305), and finishing the fixation of the injection mold (9);

step two: according to the size of an injection mold (9), a first hydraulic cylinder (207) drives a piston rod to push a moving plate (203) to move on an injection base plate (201), so that the injection position of an injection tube cavity (210) is adjusted in the horizontal direction, a feed hopper (208) enters the material injection mold (9) in the injection tube cavity (210) through an injection oil cylinder (205), the pouring of the injection mold (9) is realized, and a rough blank of a rotor assembly of a direct-current brushless motor is obtained;

step three: after the injection molding of the injection mold (9) is finished, a screw rod I (104) is driven to rotate by a motor I (103), the screw rod I (104) drives a nut seat I (105) to move in the horizontal direction, the nut seat I (105) drives a mold clamping table (3) to move to the lower part of an L-shaped plate table (108), a screw rod II (303) is driven to rotate by a motor II (304), the screw rod II (303) drives the nut seats II (305) at the two ends to move reversely, so that L-shaped clamping plates (307) at the two ends of the mold clamping table (3) pull a left module (901) and a right module (902) to the two sides, the mold opening of the injection mold (9) is realized, a piston rod is driven by a hydraulic cylinder II (602) to push a guide plate (509) to move downwards, the guide plate (509) pushes a U-shaped rack (5) to move downwards on the L-shaped plate table (108), and a rotating shaft (506) is driven by a motor III (507) to rotate, and (3) enabling the nut seat III (505) to move upwards in the lower threaded section of the rotating shaft (506), so that the connecting plates (504) on two sides of the nut seat III (505) drive the left moving block (502) and the right moving block (503) to move towards the middle position, and therefore the direct-current brushless motor rotor assembly falling on the partition plate (302) is clamped by the left clamping arm (7) and the right clamping arm (8), and in the clamping process of the direct-current brushless motor rotor assembly by the left clamping arm (7) and the right clamping arm (8), the piston rod is driven by the hydraulic cylinder II (602) to pull the guide plate (509) to lift upwards, and the mold taking of the direct-current brushless motor rotor assembly is completed.