A multi-section split rotor structure and injection molding device thereof

Abstract

The invention discloses a multi-section split rotor structure and an injection molding device thereof, which relate to the technical field of rotor structure, and include: a base, an injection molding component, and the injection molding component includes: a fixed rod, a sliding ring, and a mold device; the mold device is used for injection molding of the rotor structure; the mold device separately injects the rotor structure, and the rotor structure is multi-section split; after the mold device is molded, a controller controls an injection molding tube to open, and molten plastic immediately enters the mold device through the injection molding tube, and after a period of cooling, the molten plastic is cooled and molded into a rotor structure, and then a staff member takes out the rotor structure; when the performance of the rotor structure needs to be changed, the staff member can replace the impeller assembly and replace the size of the impeller assembly to meet the performance requirements of the rotor structure, thereby avoiding the need to redevelop the mold of the rotor structure, shortening the mold development cycle, and saving the manufacturing cost of the rotor structure.

Description

Technical Field

[0001] The invention relates to the technical field of rotor structures, in particular to a multi-section split rotor structure and an injection molding device thereof. Background Art

[0002] The injection molding device generally includes a casting molding and a lifting mechanism; the lifting mechanism is generally composed of an ejector, an ejector panel, an ejector base plate and a base plate, and is ejected by the ejector rod of the injection molding device or the mold cylinder; in the prior art, the molded part is ejected by an ejector, and the contact area of ​​the ejector on the bottom of the molded part is small, which leads to a strong lifting pressure, resulting in pits at the bottom of the molded part, thereby affecting the quality of the molded part; there is also a rotor structure. The rotor structure used in a traditional water pump is usually formed by integral injection molding. If the performance of the rotor structure in the water pump needs to be changed, this method requires re-molding; re-molding will extend the development time and increase the development cost. Summary of the invention

[0003] The object of the present invention is to provide a multi-section split rotor structure and an injection molding device thereof to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] An injection molding device of a multi-section split rotor structure comprises: a base, an injection molding tube is arranged on the surface of the base, and an injection molding component is also installed on the base;

[0006] The injection molding assembly comprises: a fixed rod; two sliding rings are arranged on the fixed rod, a micro motor is arranged inside the sliding ring, a pulley is connected to the driving shaft of the micro motor, and the pulley is slidably connected to the fixed rod; a mold device is arranged on the side of the sliding ring away from the fixed rod; the mold device is used for injection molding of the rotor structure;

[0007] The staff uses the controller to control the micro motor in the sliding ring to start, the driving shaft in the micro motor drives the pulley to rotate, the pulley drives the sliding ring to move, the sliding ring moves along the fixed rod, and during the movement of the sliding ring, it drives the mold device to close the mold. When the mold device is closed, the controller controls the injection tube to open, and the molten plastic immediately enters the mold device through the injection tube. After a period of cooling, the molten plastic is cooled and formed into a rotor structure. Subsequently, the controller controls the micro motor in the sliding ring to start, the micro motor drives the sliding ring to move, and the sliding ring drives the mold device to open. Subsequently, the staff takes out the rotor structure.

[0008] Preferably, the mold device comprises: an upper mold and a lower mold, the upper mold is connected to a sliding ring on a side away from the base through a bracket; the lower mold is installed on the base, the upper mold is in contact with the lower mold, the upper mold and the lower mold cooperate with each other to form a molding cavity, and the molding cavity is in a frustum shape; the molding cavity is used for injection molding the rotor structure;

[0009] When the rotor structure is a two-stage type, the controller controls the movement of the sliding ring, and the sliding ring drives the upper mold to move along the fixed rod, and the upper mold moves to the side close to the lower mold. When the bottom end of the upper mold contacts the top end of the lower mold, the upper mold and the lower mold cooperate with each other to form a molding cavity. Then the controller controls the injection tube to open, and the molten plastic enters the molding cavity through the injection tube. When the molten plastic fills the molding cavity, the controller controls the injection tube to close, and then the molten plastic is cooled and formed. When the molten plastic is formed into a rotor structure, the controller controls the movement of the sliding ring, and the sliding ring drives the upper mold to move to the side away from the lower mold. Then the staff takes out the rotor structure from the lower mold.

[0010] Preferably, the mold device comprises: an upper mold, a middle mold plate and a lower mold; an injection port is provided at the top of the upper mold, and a flow hole is provided at the top of the middle mold plate.

[0011] Preferably, a knife groove is provided on the side wall of the flow hole, a cutter is slidably connected in the knife groove, and a spring is connected between the cutter and the side wall of the flow hole; an electromagnet is provided on the side of the flow hole away from the cutter; the electromagnet is electrically connected to a contact switch.

[0012] Preferably, an insert is provided on the side of the middle template away from the upper template; the insert includes: a support ring, which is connected to a sliding ring close to the base through a bracket; a plurality of arc blocks are provided on the inner wall of the support ring, the arc blocks are arranged in a surrounding manner, a magnet is provided on the surface of the support ring, and a contact switch is provided on the side of the support ring close to the bracket.

[0013] Preferably, a bottom cavity is provided on the surface of one side of the lower mold close to the insert; an electromagnetic coil is provided on the side of the lower mold close to the base, a sliding cavity is provided on the side of the electromagnetic coil close to the bottom cavity, a sealing block is provided in the sliding cavity, and the sealing block is slidably connected to the inner wall of the sliding cavity; a spring is connected to the bottom of the sealing block, and the other end of the spring is connected to the bottom of the sliding cavity; an air pipe is provided in the lower mold, an air pump is provided in the base, and the air pump is connected to the air pipe through a pipeline; the air pipe is connected to the sliding cavity.

[0014] Preferably, the upper mold and the middle mold form an upper molding cavity, and the upper molding cavity is used for injection molding the impeller cover in the rotor structure; the upper molding cavity is in a frustum shape; the middle mold and the lower mold form a lower molding cavity, and the lower molding cavity is used for injection molding the blade assembly in the rotor structure;

[0015] When the rotor structure is three-stage, the controller controls the movement of the sliding ring, and the sliding ring drives the insert to move to the side close to the lower die. When the support ring contacts the lower die, the staff places the middle template on the surface of the support ring. After the middle template contacts the support ring, the middle template is connected to the contact switch. The controller controls the contact switch to be energized. The contact switch is electrically connected to the electromagnet. The electromagnet is energized to generate magnetic force. The magnetic force attracts the cutter to move along the knife groove. The cutter moves to the side close to the electromagnet, so that the flow hole is opened.

[0016] Then the controller controls the sliding ring to move, and the sliding ring drives the upper mold to move, and the upper mold moves to the side close to the insert. When the upper mold is closed, the controller controls the electromagnetic coil to pass alternating current, and the electromagnetic coil is energized to generate an alternating magnetic field. The alternating magnetic field acts on the blocking block, so that an induced magnetic field is generated inside the blocking block. The alternating magnetic field and the induced magnetic field repel each other, so that the blocking block and the electromagnetic coil generate a repulsive force, and the blocking block then moves along the sliding cavity, and the blocking block moves to the side away from the electromagnetic coil. Then the blocking block blocks the sliding cavity to prevent molten plastic from entering the sliding cavity. During the blocking process of the blocking block, the air pipe is blocked;

[0017] The controller controls the injection tube to open, and the molten plastic enters the injection port through the injection tube, and then enters the flow hole through the injection port, and then enters the lower molding cavity formed by the middle mold plate and the lower mold through the flow hole. When the molten plastic fills the lower molding cavity, it overflows from the flow hole and enters the upper molding cavity formed by the upper mold plate and the middle mold plate. The upper molding cavity injection molds the impeller cover in the rotor structure, and the lower molding cavity injection molds the blade assembly in the rotor structure.

[0018] When the molten plastic is cooled and formed, the controller controls the electromagnet in the middle template to be powered off. After the electromagnet is powered off, the magnetic force is lost, and the spring loses the magnetic attraction. The cutter moves under the action of the spring, and moves to the side close to the flow hole. The cutter moves along the knife groove. When the cutter moves to the end of the knife groove, the cutter contacts the plastic formed in the flow hole, and the cutter immediately cuts off the plastic, separating the impeller cover and the blade assembly.

[0019] When the molten plastic is cooled and formed, the controller controls the sliding ring to move, and the sliding ring drives the upper mold to move. Then the staff removes the impeller cover formed in the upper molding cavity, and then the sliding ring drives the insert to move. During the movement of the insert, the controller controls the electromagnetic coil to cut off the power. After the electromagnetic coil is cut off, the blocking block loses its magnetic effect, and the blocking block immediately falls under the action of gravity. The blocking block moves along the sliding cavity to the side away from the bottom cavity. During the process of the electromagnetic coil being cut off, the controller controls the air pump to start, and the air pump compresses the air and transmits it to the air pipe through the pipeline. Due to the falling of the blocking block, the air pipe is now connected to the sliding cavity. The compressed gas enters the sliding cavity through the air pipe. During the falling process of the blocking block, the bottom cavity is connected with the sliding cavity, and the compressed gas is immediately ejected to the bottom cavity through the sliding cavity. The ejected compressed gas lifts the formed blade assembly to the side away from the sliding cavity, avoiding the use of a pin to lift the blade assembly, which causes pits to appear at the bottom of the blade assembly, thereby affecting the quality of the blade assembly, thereby improving the injection molding quality of the blade assembly. During the process of the compressed gas lifting the formed rotor structure, the compressed gas further cools the rotor structure, causing the surface temperature of the rotor structure to drop, thereby improving the molding quality of the rotor structure.

[0020] A multi-section split rotor structure comprises: an impeller assembly, a motor rotor assembly is arranged at the bottom of the impeller assembly, and the motor rotor assembly is composed of engineering plastics and a motor; the impeller assembly is connected by laser welding; the impeller assembly can be divided into an impeller cover and a blade assembly, and the impeller cover is in a frustum shape.

[0021] Preferably, the impeller cover and the blade assembly are cast separately, and the impeller cover and the blade assembly are formed into a whole by welding.

[0022] Preferably, the impeller cover and the blade assembly are integrally cast.

[0023] The first embodiment of the rotor structure:

[0024] When the rotor structure is a two-stage type, the impeller assembly is integrally injection molded through the molding cavity and forms a two-stage structure with the rotor assembly; when the performance of the rotor structure needs to be changed, the staff can replace the impeller assembly and the size of the impeller assembly to meet the performance requirements of the rotor structure, avoiding the need to redevelop the mold for the rotor structure, shortening the mold development cycle, and saving the manufacturing cost of the rotor structure; at the same time, the use of a segmented structure for injection molding reduces the difficulty of mold development for the rotor structure and saves capital investment costs; finally, the staff connects the impeller assembly and the rotor assembly together by laser welding to ensure that the rotor structure is stable and does not deform.

[0025] The second embodiment of the rotor structure:

[0026] When the rotor structure is a three-section type, the impeller cover and the blade assembly in the impeller assembly are separately injection molded, and together with the rotor assembly form a three-section structure. When the performance of the rotor structure needs to be changed, the staff can replace the impeller cover or the blade assembly, and replace the size of the impeller cover or the blade assembly to meet the performance requirements of the rotor structure, thus avoiding the need to redevelop the mold for the rotor structure, shortening the mold development cycle, and saving the manufacturing cost of the rotor structure. At the same time, the use of a segmented structure for injection molding reduces the difficulty of mold development for the rotor structure, saving capital investment costs. Finally, the staff welds the impeller cover and the blade assembly by laser welding to form an impeller assembly, and then connects the impeller assembly to the rotor assembly by laser welding to ensure that the rotor structure is stable and does not deform.

[0027] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0028] 1. Due to the falling of the blocking block, the air pipe is connected with the sliding cavity, and the compressed gas enters the sliding cavity through the air pipe. During the falling process of the blocking block, the bottom cavity is connected with the sliding cavity, and the compressed gas is immediately ejected to the bottom cavity through the sliding cavity. The ejected compressed gas lifts the formed blade assembly to the side away from the sliding cavity, avoiding the use of a pin to lift the blade assembly, which causes pits to appear at the bottom of the blade assembly, thereby affecting the quality of the blade assembly, thereby improving the quality of the injection molding of the blade assembly. During the process of the compressed gas lifting the formed rotor structure, the compressed gas further cools the rotor structure, causing the surface temperature of the rotor structure to drop, thereby improving the molding quality of the rotor structure.

[0029] 2. When the performance of the rotor structure needs to be changed, the staff can replace the impeller assembly and the size of the impeller assembly to meet the performance requirements of the rotor structure, avoiding the need to redevelop the mold of the rotor structure, shortening the mold development cycle, and saving the manufacturing cost of the rotor structure; at the same time, the use of a segmented structure for injection molding reduces the difficulty of mold development for the rotor structure and saves capital investment costs; finally, the staff connects the impeller assembly and the rotor assembly together through laser welding to ensure that the rotor structure is stable and does not deform. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 It is the main figure of the present invention;

[0032] Figure 2 is an exploded view of the present invention;

[0033] Figure 3 It is a schematic diagram of the internal structure of the lower die;

[0034] Figure 4 It is the internal front view of the lower die;

[0035] Figure 5 yes Figure 4 The enlarged view of point A in the middle;

[0036] Figure 6 yes Figure 4 The enlarged view of point B in the middle;

[0037] Figure 7 is a schematic structural diagram of a first embodiment of a rotor structure;

[0038] Figure 8 1 is a schematic structural diagram of a second embodiment of a rotor structure.

[0039] In the figure: 1, base; 2, injection molding component; 21, fixing rod; 22, sliding ring;

[0040] 3. Mold device; 31. Upper mold; 311. Injection port; 32. Insert; 321. Support ring; 322. Arc block;

[0041] 33, lower die; 331, bottom cavity; 332, electromagnetic coil; 333, sliding cavity; 334, blocking block; 335, air pipe;

[0042] 34, middle template; 341, flow hole; 342, knife groove; 343, cutting knife;

[0043] 35, molding cavity; 351, upper molding cavity; 352, lower molding cavity;

[0044] 4. Impeller assembly; 41. Impeller cover; 42. Blade assembly; 5. Rotor assembly. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1-Figure 8 , the present invention provides a technical solution:

[0047] An injection molding device of a multi-section split rotor structure comprises: a base 1, an injection molding tube is arranged on the surface of the base 1, and an injection molding component 2 is also installed on the base 1;

[0048] The injection molding assembly 2 comprises: a fixed rod 21; two sliding rings 22 are arranged on the fixed rod 21, a micro motor is arranged inside the sliding ring 22, a pulley is connected to the driving shaft of the micro motor, and the pulley is slidably connected to the fixed rod 21; a mold device 3 is arranged on the side of the sliding ring 22 away from the fixed rod 21; the mold device 3 is used for injection molding of the rotor structure;

[0049] The staff controls the micro motor in the slip ring 22 to start through the controller, the driving shaft in the micro motor drives the pulley to rotate, the pulley drives the slip ring 22 to move, the slip ring 22 moves along the fixed rod 21, and during the movement of the slip ring 22, drives the mold device 3 to close the mold. When the mold device 3 is closed, the controller controls the injection tube to open, and the molten plastic immediately enters the mold device 3 through the injection tube. After a period of cooling, the molten plastic is cooled and formed into a rotor structure. Subsequently, the controller controls the micro motor in the slip ring 22 to start, the micro motor drives the slip ring 22 to move, and the slip ring 22 drives the mold device 3 to open. Subsequently, the staff takes out the rotor structure.

[0050] As a specific embodiment of the present invention, the mold device 3 includes: an upper mold 31 and a lower mold 33, wherein the upper mold 31 is connected to the sliding ring 22 on the side away from the base 1 through a bracket; the lower mold 33 is installed on the base 1, the upper mold 31 is in contact with the lower mold 33, and the upper mold 31 and the lower mold 33 cooperate with each other to form a molding cavity 35, and the molding cavity 35 is in a frustum shape; the molding cavity 35 is used for injection molding the rotor structure;

[0051] When the rotor structure is a two-stage type, the controller controls the movement of the sliding ring 22, and the sliding ring 22 drives the upper mold 31 to move along the fixed rod 21, and the upper mold 31 moves to the side close to the lower mold 33. When the bottom end of the upper mold 31 contacts the top end of the lower mold 33, the upper mold 31 and the lower mold 33 cooperate with each other to form a molding cavity 35. Then the controller controls the injection molding tube to open, and the molten plastic enters the molding cavity 35 through the injection molding tube. When the molten plastic fills the molding cavity 35, the controller controls the injection molding tube to close, and then the molten plastic is cooled and formed. When the molten plastic is formed into a rotor structure, the controller controls the movement of the sliding ring 22, and the sliding ring 22 drives the upper mold 31 to move to the side away from the lower mold 33. Then the staff takes out the rotor structure from the lower mold 33.

[0052] As a specific embodiment of the present invention, the mold device 3 includes: an upper mold 31 , a middle mold plate 34 and a lower mold 33 ; an injection port 311 is opened on the top of the upper mold 31 , and a flow hole 341 is opened on the top of the middle mold plate 34 .

[0053] As a specific embodiment of the present invention, a knife groove 342 is opened on the side wall of the flow hole 341, a cutter 343 is slidably connected in the knife groove 342, and a spring is connected between the cutter 343 and the side wall of the flow hole 341; an electromagnet is arranged on the side of the flow hole 341 away from the cutter 343; the electromagnet is electrically connected to a contact switch.

[0054] As a specific embodiment of the present invention, an insert 32 is provided on the side of the middle mold 34 away from the upper mold 31; the insert 32 includes: a support ring 321, and the support ring 321 is connected to the sliding ring 22 on the side close to the base 1 through a bracket; a plurality of arc blocks 322 are provided on the inner wall of the support ring 321, and the arc blocks 322 are arranged in a surrounding manner, a magnet is provided on the surface of the support ring 321, and a contact switch is provided on the side of the support ring 321 close to the bracket.

[0055] As a specific embodiment of the present invention, a bottom cavity 331 is provided on the surface of one side of the lower mold 33 close to the insert 32; an electromagnetic coil 332 is provided on the side of the lower mold 33 close to the base 1, and a sliding cavity 333 is provided on the side of the electromagnetic coil 332 close to the bottom cavity 331, and a blocking block 334 is provided in the sliding cavity 333, and the blocking block 334 is slidably connected to the inner wall of the sliding cavity 333; a spring is connected to the bottom of the blocking block 334, and the other end of the spring is connected to the bottom of the sliding cavity 333; an air pipe 335 is provided in the lower mold 33, and an air pump is provided in the base 1, and the air pump is connected to the air pipe 335 through a pipeline; the air pipe 335 is connected to the sliding cavity 333.

[0056] As a specific embodiment of the present invention, the upper mold 31 and the middle mold plate 34 form an upper molding cavity 351, and the upper molding cavity 351 is used for injection molding the impeller cover 41 in the rotor structure; the upper molding cavity 351 is in a frustum shape; the middle mold plate 34 and the lower mold 33 form a lower molding cavity 352, and the lower molding cavity 352 is used for injection molding the blade assembly 42 in the rotor structure;

[0057] When the rotor structure is a three-stage type, the controller controls the sliding ring 22 to move, and the sliding ring 22 drives the insert 32 to move to the side close to the lower mold 33. When the support ring 321 contacts the lower mold 33, the staff places the middle mold plate 34 on the surface of the support ring 321. After the middle mold plate 34 contacts the support ring 321, the middle mold plate 34 is connected to the contact switch, and the controller controls the contact switch to be energized. The contact switch is electrically connected to the electromagnet. The electromagnet is energized to generate magnetic force, and the magnetic force attracts the cutter 343 to move along the knife groove 342. The cutter 343 moves to the side close to the electromagnet, so that the flow hole 341 is opened;

[0058] Then the controller controls the sliding ring 22 to move, and the sliding ring 22 drives the upper mold 31 to move, and the upper mold 31 moves to the side close to the insert 32. When the upper mold 31 is closed, the controller controls the electromagnetic coil 332 to pass alternating current, and the electromagnetic coil 332 is energized to generate an alternating magnetic field. The alternating magnetic field acts on the blocking block 334, so that an induced magnetic field is generated inside the blocking block 334. The alternating magnetic field and the induced magnetic field repel each other, so that the blocking block 334 and the electromagnetic coil 332 generate a repulsive force, and the blocking block 334 then moves along the sliding cavity 333, and the blocking block 334 moves to the side away from the electromagnetic coil 332. Then the blocking block 334 blocks the sliding cavity 333 to prevent the molten plastic from entering the sliding cavity 333. During the blocking process of the blocking block 334, the air pipe 335 is blocked.

[0059] The controller controls the injection tube to open, and the molten plastic enters the injection port 311 through the injection tube, and the molten plastic enters the flow hole 341 through the injection port 311, and enters the lower molding cavity 352 formed by the middle mold plate 34 and the lower mold 33 through the flow hole 341. When the molten plastic fills the lower molding cavity 352, it overflows from the flow hole 341 and enters the upper molding cavity 351 formed by the upper mold plate 31 and the middle mold plate 34. The upper molding cavity 351 injection molds the impeller cover 41 in the rotor structure, and the lower molding cavity 352 injection molds the blade assembly 42 in the rotor structure.

[0060] After the molten plastic is cooled and formed, the controller controls the electromagnet in the middle template 34 to be powered off. After the electromagnet is powered off, the magnetic force is lost, and the spring loses the magnetic attraction. The cutter 343 moves under the action of the spring. The cutter 343 moves to the side close to the flow hole 341 and moves along the knife groove 342. When the cutter 343 moves to the end of the knife groove 342, the cutter 343 contacts the plastic formed in the flow hole 341, and the cutter 343 immediately cuts off the plastic, separating the impeller cover 41 and the blade assembly 42.

[0061] After the molten plastic is cooled and formed, the controller controls the sliding ring 22 to move, and the sliding ring 22 drives the upper mold 31 to move. Then the staff removes the impeller cover 41 formed in the upper molding cavity 351, and then the sliding ring 22 drives the insert 32 to move. During the movement of the insert 32, the controller controls the electromagnetic coil 332 to be powered off. After the electromagnetic coil 332 is powered off, the blocking block 334 loses its magnetic effect, and the blocking block 334 immediately falls under the action of gravity. The blocking block 334 moves along the sliding cavity 333 to the side away from the bottom cavity 331. During the power-off process of the electromagnetic coil 332, the controller controls the air pump to start, and the air pump compresses the air and transmits it to the air pipe 335 through the pipeline. Due to the falling of the blocking block 334, the air pipe 335 is 35 is connected to the sliding chamber 333, and the compressed gas enters the sliding chamber 333 through the air pipe 335. During the falling process of the blocking block 334, the bottom chamber 331 is connected to the sliding chamber 333, and the compressed gas is immediately ejected to the bottom chamber 331 through the sliding chamber 333. The ejected compressed gas lifts the formed blade assembly 42 to the side away from the sliding chamber 333, avoiding the use of a pin lifting method, which causes pits to appear at the bottom of the blade assembly 42, thereby affecting the quality of the blade assembly 42, thereby improving the injection molding quality of the blade assembly 42. During the process of the compressed gas lifting the formed rotor structure, the compressed gas further cools the rotor structure, so that the surface temperature of the rotor structure drops, thereby improving the molding quality of the rotor structure.

[0062] A multi-section split rotor structure includes: an impeller assembly 4, a motor rotor assembly 5 is arranged at the bottom of the impeller assembly 4, and the motor rotor assembly 5 is composed of engineering plastics and a motor; the impeller assembly 4 is connected by laser welding; the impeller assembly 4 can be divided into an impeller cover 41 and a blade assembly 42, and the impeller cover 41 is frustum-shaped.

[0063] As a specific implementation of the present invention, the impeller cover 41 and the blade assembly 42 are cast separately, and the impeller cover 41 and the blade assembly 42 are welded into a whole.

[0064] As a specific embodiment of the present invention, the impeller cover 41 and the blade assembly 42 are integrally cast;

[0065] The first embodiment of the rotor structure:

[0066] When the rotor structure is a two-stage type, the impeller assembly 4 is integrally injection molded through the molding cavity 35 and forms a two-stage structure with the rotor assembly 5; when the performance of the rotor structure needs to be changed, the staff can replace the impeller assembly 4 and the size of the impeller assembly 4 to meet the performance requirements of the rotor structure, avoiding the need to redevelop the mold of the rotor structure, shortening the mold development cycle, and saving the manufacturing cost of the rotor structure; at the same time, the use of a segmented structure for injection molding reduces the difficulty of mold development for the rotor structure and saves capital investment costs; finally, the staff connects the impeller assembly 4 and the rotor assembly 5 together by laser welding to ensure that the rotor structure is stable and does not deform.

[0067] The second embodiment of the rotor structure:

[0068] When the rotor structure is a three-section type, the impeller cover 41 and the blade assembly 42 in the impeller assembly 4 are injection molded separately; and they form a three-section structure with the rotor assembly 5; when the performance of the rotor structure needs to be changed, the staff can replace the impeller cover 41 or the blade assembly 42, and replace the size of the impeller cover 41 or the blade assembly 42 to meet the performance requirements of the rotor structure, avoiding the need to redevelop the mold of the rotor structure, shortening the mold development cycle, and saving the manufacturing cost of the rotor structure; at the same time, the segmented structure is used for injection molding, which reduces the difficulty of mold development for the rotor structure and saves capital investment costs; finally, the staff welds the impeller cover 41 and the blade assembly 42 by laser welding; the impeller assembly 4 is formed, and then the impeller assembly 4 and the rotor assembly 5 are connected together by laser welding to ensure that the rotor structure is stable and does not deform.

[0069] Working principle of the present invention:

[0070] When the rotor structure is a two-stage type, the controller controls the sliding ring 22 to move, and the sliding ring 22 drives the upper mold 31 to move along the fixed rod 21, and the upper mold 31 moves to the side close to the lower mold 33. When the bottom end of the upper mold 31 contacts the top end of the lower mold 33, the upper mold 31 and the lower mold 33 cooperate with each other to form a molding cavity 35. Then the controller controls the injection molding tube to open, and the molten plastic enters the molding cavity 35 through the injection molding tube. When the molten plastic fills the molding cavity 35, the controller controls the injection molding tube to close, and then the molten plastic is cooled and formed. When the molten plastic is formed into a rotor structure, the controller controls the sliding ring 22 to move, and the sliding ring 22 drives the upper mold 31 to move to the side away from the lower mold 33. Then the staff takes out the rotor structure from the lower mold 33.

[0071] When the rotor structure is a three-stage type, the controller controls the sliding ring 22 to move, and the sliding ring 22 drives the insert 32 to move to the side close to the lower mold 33. When the support ring 321 contacts the lower mold 33, the staff places the middle mold plate 34 on the surface of the support ring 321. After the middle mold plate 34 contacts the support ring 321, the middle mold plate 34 is connected to the contact switch, and the controller controls the contact switch to be energized. The contact switch is electrically connected to the electromagnet. The electromagnet is energized to generate magnetic force, and the magnetic force attracts the cutter 343 to move along the knife groove 342. The cutter 343 moves to the side close to the electromagnet, so that the flow hole 341 is opened;

[0072] Then the controller controls the sliding ring 22 to move, and the sliding ring 22 drives the upper mold 31 to move, and the upper mold 31 moves to the side close to the insert 32. When the upper mold 31 is closed, the controller controls the electromagnetic coil 332 to pass alternating current, and the electromagnetic coil 332 is energized to generate an alternating magnetic field. The alternating magnetic field acts on the blocking block 334, so that an induced magnetic field is generated inside the blocking block 334. The alternating magnetic field and the induced magnetic field repel each other, so that the blocking block 334 and the electromagnetic coil 332 generate a repulsive force, and the blocking block 334 then moves along the sliding cavity 333, and the blocking block 334 moves to the side away from the electromagnetic coil 332. Then the blocking block 334 blocks the sliding cavity 333 to prevent the molten plastic from entering the sliding cavity 333. During the blocking process of the blocking block 334, the air pipe 335 is blocked.

[0073] The controller controls the injection tube to open, and the molten plastic enters the injection port 311 through the injection tube, and the molten plastic enters the flow hole 341 through the injection port 311, and enters the lower molding cavity 352 formed by the middle mold plate 34 and the lower mold 33 through the flow hole 341. When the molten plastic fills the lower molding cavity 352, it overflows from the flow hole 341 and enters the upper molding cavity 351 formed by the upper mold plate 31 and the middle mold plate 34. The upper molding cavity 351 injection molds the impeller cover 41 in the rotor structure, and the lower molding cavity 352 injection molds the blade assembly 42 in the rotor structure.

[0074] After the molten plastic is cooled and formed, the controller controls the electromagnet in the middle template 34 to be powered off. After the electromagnet is powered off, the magnetic force is lost, and the spring loses the magnetic attraction. The cutter 343 moves under the action of the spring. The cutter 343 moves to the side close to the flow hole 341 and moves along the knife groove 342. When the cutter 343 moves to the end of the knife groove 342, the cutter 343 contacts the plastic formed in the flow hole 341, and the cutter 343 immediately cuts off the plastic, separating the impeller cover 41 and the blade assembly 42.

[0075] After the molten plastic is cooled and formed, the controller controls the sliding ring 22 to move, and the sliding ring 22 drives the upper mold 31 to move. Then the staff removes the impeller cover 41 formed in the upper molding cavity 351, and then the sliding ring 22 drives the insert 32 to move. During the movement of the insert 32, the controller controls the electromagnetic coil 332 to be powered off. After the electromagnetic coil 332 is powered off, the blocking block 334 loses its magnetic effect, and the blocking block 334 immediately falls under the action of gravity. The blocking block 334 moves along the sliding cavity 333 to the side away from the bottom cavity 331. During the power-off process of the electromagnetic coil 332, the controller controls the air pump to start The air pump compresses the air and transmits it to the air pipe 335 through the pipeline. Due to the falling of the blocking block 334, the air pipe 335 is connected with the sliding chamber 333, and the compressed gas enters the sliding chamber 333 through the air pipe 335. During the falling process of the blocking block 334, the bottom chamber 331 is connected with the sliding chamber 333, and the compressed gas is immediately ejected to the bottom chamber 331 through the sliding chamber 333. The ejected compressed gas lifts the formed blade assembly 42 to the side away from the sliding chamber 333, avoiding the use of a pin to lift, which causes pits to appear at the bottom of the blade assembly 42, thereby affecting the quality of the blade assembly 42.

[0076] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0077] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An injection molding device of a multi-section split rotor structure, characterized in that: include: A base (1), wherein an injection molding tube is arranged on the surface of the base (1), and an injection molding component (2) is also installed on the base (1); The injection molding assembly (2) comprises: a fixed rod (21); two sliding rings (22) are arranged on the fixed rod (21); a micro motor is arranged inside the sliding ring (22); a pulley is connected to the driving shaft of the micro motor, and the pulley is slidably connected to the fixed rod (21); a mold device (3) is arranged on the side of the sliding ring (22) away from the fixed rod (21); the mold device (3) is used for injection molding of the rotor structure; The mold device (3) comprises: an upper mold (31), a middle mold plate (34) and a lower mold (33); an injection port (311) is provided at the top of the upper mold (31), and a flow hole (341) is provided at the top of the middle mold plate (34); The side wall of the flow hole (341) is provided with a knife groove (342), a cutter (343) is slidably connected in the knife groove (342), and a spring is connected between the cutter (343) and the side wall of the flow hole (341); an electromagnet is provided on a side of the flow hole (341) away from the cutter (343); the electromagnet is electrically connected to a contact switch; A insert (32) is provided on the side of the middle mold plate (34) away from the upper mold (31); the insert (32) comprises: a support ring (321), the support ring (321) is connected to a sliding ring (22) on a side close to the base (1) through a bracket; a plurality of arc blocks (322) are provided on the inner wall of the support ring (321), the arc blocks (322) are arranged in a surrounding manner, a magnet is provided on the surface of the support ring (321), and a contact switch is provided on the side of the support ring (321) close to the bracket; A bottom cavity (331) is provided on a surface of one side of the lower mold (33) close to the insert (32); an electromagnetic coil (332) is provided on a side of the lower mold (33) close to the base (1); a sliding cavity (333) is provided on a side of the electromagnetic coil (332) close to the bottom cavity (331); a blocking block (334) is provided in the sliding cavity (333); the blocking block (334) is slidably connected to the inner wall of the sliding cavity (333); a spring is connected to the bottom of the blocking block (334); the other end of the spring is connected to the bottom of the sliding cavity (333); an air pipe (335) is provided in the lower mold (33); an air pump is provided in the base (1); the air pump is connected to the air pipe (335) through a pipeline; the air pipe (335) is connected to the sliding cavity (333).

2. The injection molding device of the multi-section split rotor structure according to claim 1, characterized in that: The mold device (3) comprises: an upper mold (31) and a lower mold (33); the upper mold (31) is connected to a sliding ring (22) on a side away from the base (1) through a bracket; the lower mold (33) is installed on the base (1); the upper mold (31) is in contact with the lower mold (33); the upper mold (31) and the lower mold (33) cooperate with each other to form a molding cavity (35); the upper part of the molding cavity (35) is in a frustum shape; the molding cavity (35) is used for injection molding a rotor structure.

3. The injection molding device of the multi-section split rotor structure according to claim 1, characterized in that: The upper mold (31) and the middle mold plate (34) form an upper molding cavity (351), and the upper molding cavity (351) is used for injection molding an impeller cover (41) in a rotor structure. The upper molding cavity (351) is in a frustum shape; the middle mold plate (34) and the lower mold (33) form a lower molding cavity (352), and the lower molding cavity (352) is used for injection molding a blade assembly (42) in the rotor structure.

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