Rotor on-line automatic injection molding device

Abstract

The utility model discloses an on-line automatic injection molding device for a rotor, which comprises a mold closing operation table and a program control box arranged on one side of the mold closing operation table, a lower mold assembly and an upper mold mounting plate are arranged on the mold closing operation table, an upper mold assembly and an injection molding assembly are arranged on the upper mold mounting plate, and the upper mold assembly comprises an upper mold plate and an upper mold driving motor. The injection molding assembly comprises an injection molding oil cylinder and an injection molding pipe, a sprue gate is formed in the upper mold plate, the lower end of the injection molding pipe is communicated with the sprue gate, and a flow guide plate is arranged below the sprue gate; the lower die assembly comprises a lower die base and two die closing devices which are symmetrically arranged, a jacking assembly is arranged below the die closing operation table, and a drainage opening material taking assembly is arranged on one side of the die closing operation table. Two ends of the rotor and the groove body are directly subjected to injection molding on a rotor production line, so that the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor processing technology, specifically to an automatic injection molding device on a rotor line for injection molding at both ends of the rotor during the manufacturing process. Background Technology

[0002] Permanent magnet rotor cores are typically made of laminated silicon steel sheets with high magnetic permeability, which effectively concentrates and enhances the magnetic field, making the motor's magnetic field stronger and more stable. This helps improve the motor's torque and output power, thereby improving the motor's overall performance. A high-quality core can reduce magnetic resistance and leakage, making the motor more efficient during operation. This not only helps save energy but also reduces heat generation and extends the motor's lifespan.

[0003] Chinese utility model patent application number 202222395717.3, filed on September 9, 2022, discloses an injection molding device for producing magnetic rotors. The device includes a base, a support frame fixedly mounted on the upper surface of the base, and two drive cylinders fixedly mounted on the lower surface of the support frame. Each drive cylinder's output end is movably connected to a piston rod. In use, the device lowers the molding die to abut the base, forming a molding cavity with the base, molding die, molding hole, and sealing plate. Raw material is then injected into the connecting hole through the feed pipe, and an air compressor pushes the material into the molding cavity for molding. After molding, the molding die can be raised, and the molded part remains in place under the support of the sealing plate. Once the molded part is removed from the molding hole, it can be pushed to one side for easy removal, making the removal of the molded part convenient and quick.

[0004] Chinese utility model application No. 202123184915.7, filed on December 17, 2021, discloses a high-efficiency permanent magnet rotor core injection molding device. The device includes a base plate, a top plate, a barrel, a pusher, a heating device, and a rotor core accompanying assembly. The base plate, top plate, and barrel are connected to an injection molding machine. A pusher is installed inside the barrel, and the heating device is installed on the base plate and top plate. The rotor core accompanying assembly is located between the base plate and top plate and includes a rotor core stack, a runner plate, and a bottom mold. This utility model divides the injection molding device into a base plate, a top plate, and a barrel connected to the injection molding machine, and uses the runner plate and bottom mold as accompanying assemblies for the rotor core. This simplifies the mold structure, avoids changes in injection molding equipment, reduces injection molding costs and difficulty, and improves injection molding efficiency. The rotor core body, runner plate, and bottom mold form a closed cavity, preventing product displacement during injection molding and ensuring injection molding reliability.

[0005] Existing injection molding devices require the rotor to be transferred to the injection molding device separately during rotor processing, resulting in low production efficiency and making automated continuous production impossible. Therefore, it is necessary to design an automatic injection molding device for rotors that can directly connect to the production line during rotor production and perform direct injection molding on the production line to improve production efficiency. Utility Model Content

[0006] The purpose of this invention is to solve the technical problems in the prior art where, after the motor rotor is inserted, injection molding is required at both ends of the rotor, making it impossible to coordinate with other production processes to achieve automated production, and where air bubbles are easily generated during injection molding. This invention provides an automatic injection molding device for rotors that can be directly injection molded on the production line during rotor production, thereby improving production efficiency and product quality.

[0007] To solve the aforementioned technical problem, this utility model provides an automatic injection molding device on a rotor line, including a mold closing operation table and a program control box disposed on one side of the mold closing operation table. The mold closing operation table is provided with a lower mold assembly and an upper mold mounting plate. The upper mold mounting plate is provided with an upper mold assembly and an injection molding assembly. The upper mold assembly includes an upper template and an upper mold drive motor. The injection molding assembly includes an injection cylinder and an injection pipe. A sprue is provided on the upper template, and the lower end of the injection pipe is connected to the sprue. A [missing information - likely a device name or component] is provided below the sprue. The guide plate; the lower mold assembly includes a lower mold base and two symmetrically arranged mold closing devices. A lifting assembly is provided below the mold closing operation table. The lifting assembly includes a lifting mounting plate and a lifting cylinder. The upper end of the piston rod of the lifting cylinder is provided with a lifting seat for pushing the rotor core. The lifting seat cooperates with the conveyor belt on the automatic production line. The conveyor belt transports the rotor core to the lifting seat. In this way, the automatic production line can send the rotor core to the lifting seat for injection molding during the rotor core manufacturing process. A sprue material collection assembly is provided on one side of the mold closing operation table for recycling sprue material.

[0008] As a further improvement of this utility model, the lower mold base is provided with a movable groove, and each of the mold closing devices includes a mold closing cylinder. The piston rod of the mold closing cylinder is provided with a closing module. The two mold closing cylinders push the corresponding closing modules to abut against each other and form a motor injection cavity. The motor injection cavity is used to place the rotor core.

[0009] As a further improvement of this utility model, the two combined modules are symmetrical semi-circular rings.

[0010] As a further improvement of this utility model, a heating device is provided on the assembly module.

[0011] As a further improvement of this utility model, the upper template includes an upper heat insulation plate, an upper locking template, and an upper release template arranged in sequence, the injection molding tube passes through the upper heat insulation plate, the upper locking template, and the upper release template in sequence, and the guide plate is fixed at the bottom of the upper release template.

[0012] As a further improvement of this utility model, a flow guide groove is provided on the flow guide plate, and a flow guide hole is provided on the flow guide groove.

[0013] As a further improvement of this utility model, a lifting control cylinder is also provided on the upper mold mounting plate. The piston rod of the lifting control cylinder passes through the upper mold mounting plate and is connected to the mold closing operation table. Multiple lifting movable rods are provided between the upper mold mounting plate and the mold closing operation table.

[0014] As a further improvement of this utility model, the sprue material receiving assembly includes a sprue material mounting plate, a pair of slide rails and a sprue material push rod are provided on the sprue material mounting plate, a sliding plate is provided on the slide rails, and one end of the sliding plate is synchronously connected to the sprue material push rod.

[0015] As a further improvement of this utility model, the lifting seat includes a rotor core fixing column and a motor bottom sealing plate.

[0016] The beneficial effects of this utility model are: 1. This utility model sets up a motor injection cavity, which allows thermosetting plastic to be directly injected into both ends of the rotor core and into the groove. According to the space reserved in the injection cavity, the wires at both ends of the rotor core are fully and evenly covered, ensuring the overall insulation effect of the rotor core; 2. This utility model uses a heating device to keep the thermosetting plastic in a softened state during the rotor core injection process, preventing air bubbles from forming in the groove; 3. This utility model, when used in conjunction with other rotor manufacturing devices, can directly inject plastic into both ends of the rotor and the groove during rotor manufacturing, which helps improve production efficiency and product quality. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is the left view of this utility model.

[0019] Figure 3 This is a three-dimensional view of the mold closing operation table of this utility model.

[0020] Figure 4 This is a top view of the guide plate of this utility model.

[0021] Figure 5 This is a schematic diagram of the lower mold assembly of this utility model in its separated state.

[0022] Figure 6 This is a schematic diagram of the combined state of the lower mold assembly of this utility model.

[0023] Figure 7 This is a three-dimensional view of the lifting seat of this utility model.

[0024] Figure 8 This is a three-dimensional view of the sprue material handling component of this utility model.

[0025] The reference numerals in the attached diagrams are as follows: 1. Mold closing control panel; 10. Program control box; 100. Motor injection cavity; 2. Lower mold assembly; 20. Movable groove; 21. Lower mold base; 22. Mold closing device; 221. Mold closing cylinder; 222. Mold closing module; 23. Heating device; 3. Upper mold mounting plate; 31. Lifting control cylinder; 32. Lifting movable rod; 4. Upper mold assembly; 41. Upper template; 410. Sprue; 42. Upper mold drive motor; 43. Guide plate; 5. Injection assembly; 51. Injection cylinder; 52. Injection tube; 411. Upper heat insulation plate; 412. Upper locking template; 413. Upper ejector template; 430. Guide hole; 431. Guide groove; 6. Lifting assembly; 61. Lifting mounting plate; 62. Lifting cylinder; 63. Lifting seat; 631. Rotor core fixing column; 632. Motor bottom sealing plate; 7. Sprue material handling assembly; 71. Sprue material mounting plate; 72. Slide rail; 73. Sprue material push rod; 74. Sliding plate; 8. Rotor core. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] like Figure 1 , Figure 2 , Figure 7An automatic injection molding device for a rotor line is shown, comprising a mold closing operation table 1 and a program control box 10 disposed on one side of the mold closing operation table 1. The mold closing operation table 1 is provided with a lower mold assembly 2 and an upper mold mounting plate 3. An upper mold assembly 4 and an injection molding assembly 5 are disposed on the upper mold mounting plate 3. A lifting assembly 6 is disposed below the mold closing operation table 1. The lifting assembly 6 includes a lifting mounting plate 61 and a lifting cylinder 62. A lifting seat 63 for pushing a rotor core 8 is disposed at the upper end of the piston rod of the lifting cylinder 62. The lifting seat 63 cooperates with a conveyor belt, which transports the rotor core 8 to the lifting seat 63. The lifting seat 63 controls the rise or fall of the rotor core 8 to perform injection molding. The lifting seat 63 includes a rotor core fixing column 631 and a motor bottom sealing plate 632. The lifting cylinder 62 is used to push the lifting seat 63 to rise or fall; the rotor core fixing column 631 is used to position the rotor core 8; the motor bottom sealing plate 632 prevents thermosetting plastic from flowing out of the injection cavity 100 during injection molding.

[0028] like Figures 1 to 3 As shown, the mold closing operation table 1 serves as the basic support structure of the entire equipment. The program control box 10 is located on one side of the mold closing operation table 1 and is used to control the actions of each actuator. The lower mold assembly 2 is fixedly installed on the mold closing operation table 1. The upper mold mounting plate 3 is detachably installed on the mold closing operation table 1. The upper mold assembly 4 and the injection molding assembly 5 are installed on the upper mold mounting plate 3 and are used for injection molding. The sprue material collection assembly 7 is located on one side of the mold closing operation table 1 and is used to collect sprue material.

[0029] like Figures 1 to 3 As shown, the upper mold assembly 4 includes an upper mold plate 41 and an upper mold drive motor 42. The upper mold plate 41 includes an upper heat insulation plate 411, an upper locking plate 412, and an upper ejector plate 413 arranged sequentially. The upper mold drive motor 42 is used to drive the lifting and lowering movement of the upper mold plate 41. The injection molding assembly 5 includes an injection cylinder 51 and an injection tube 52. The injection tube 52 passes through the upper heat insulation plate 411, the upper locking plate 412, and the upper ejector plate 413 in sequence. The upper mold plate 41 is provided with a gating gate 410. The lower end of the injection tube 52 is connected to the gating gate 410. A guide plate 43 is provided below the gating gate 410. The guide plate 43 is located at the bottom of the upper ejector plate 413. A guide groove 431 is provided on the guide plate 43, and a guide hole 430 is provided on the guide groove 431. In this way, when the upper mold drive motor 42 drives the upper template 41 to descend, the upper heat insulation plate 411, the upper locking template 412, and the upper release template 413 can be pressed down in sequence, and the upper release template 413 can be pressed onto the guide plate 43.

[0030] like Figure 4As shown, the guide plate 43 includes a guide groove 431 disposed on the guide plate 43. The guide groove 431 is provided with radial and annular guide grooves 431, and a guide hole 430 is disposed on the guide groove 431. The guide plate 43 can effectively guide the flow path of thermosetting plastic on the guide groove 431, ensuring that the thermosetting plastic smoothly enters the groove of the rotor core 8 in the motor injection cavity 100 through the guide hole 430, avoiding poor flow or accumulation of thermosetting plastic, thereby improving the stability of injection molding and product quality. The thermosetting plastic placed in the injection tube 52 is squeezed onto the guide plate 43 by the injection cylinder 51. The thermosetting plastic on the guide plate 43 enters the guide hole 430 through the guide groove 431 and is then injected into the rotor core.

[0031] like Figure 3 , Figure 5 , Figure 6 As shown, the lower mold assembly 2 includes a lower mold base 21 and two symmetrically arranged mold closing devices 22. The lower mold base 21 is provided with a movable groove 20. Each mold closing device 22 includes a mold closing cylinder 221. A mold closing module 222 is provided on the piston rod of the mold closing cylinder 221. The two mold closing cylinders 221 push the corresponding mold closing modules 222 to abut against each other and form a motor injection cavity 100. The motor injection cavity 100 is used to place the rotor core 8. The two mold closing modules 222 are symmetrical semi-circular rings. An exhaust groove is provided on the side wall of the mold closing module 222 to discharge the gas in the motor injection cavity 100 during the injection process. This helps to prevent the generation of air bubbles in the cavity during the injection process.

[0032] like Figure 2 , Figure 3 , Figure 4 As shown, the injection molding assembly 5 includes an injection cylinder 51 for providing driving power; the injection pipe 52 passes through the upper heat insulation plate 411, the upper locking template 412 and the upper release template 413, and is connected to the pouring port 410. Thermosetting plastic enters the guide plate 43 through the injection pipe 52, and then is injected into both ends of the rotor core 8 and the groove through the guide hole 430.

[0033] like Figure 1 , Figure 3 As shown, a lifting control cylinder 31 is also provided on the upper mold mounting plate 3. The piston rod of the lifting control cylinder 31 passes through the upper mold mounting plate 3 and is connected to the mold closing operating table 1. Multiple lifting rods 32 are provided between the upper mold mounting plate 3 and the mold closing operating table 1. The multiple lifting rods 32 between the upper mold mounting plate 3 and the mold closing operating table 1 ensure smooth lifting. The lifting control cylinder 31 drives the upper mold mounting plate 3 to move downward, so that the upper mold assembly 4 and the lower mold assembly 2 press against each other.

[0034] like Figure 6As shown, a heating device 23 is provided on the assembly module 222. By providing the heating device 23, the assembly module 222 can maintain the temperature required during injection molding, so that the thermosetting plastic can pass through the tank without generating air bubbles, allowing the thermosetting plastic to flow into the other end of the rotor for injection molding.

[0035] like Figure 2 , Figure 8 As shown, the sprue material handling assembly 7 includes a sprue material mounting plate 71, on which a pair of slide rails 72 and a sprue material pusher 73 are provided. A sliding plate 74 is provided on the slide rails 72, and one end of the sliding plate 74 is connected to the sprue material pusher 73. The sprue material mounting plate 71 is fixed to one side of the mold closing operating table 1; the slide rails 72 are used to guide the movement of the sliding plate 74; the sprue material pusher 73 is connected to the sliding plate 74 and pushes the sliding plate 74 to move along the slide rails 72 to clean and recycle the sprue material.

[0036] The working process of this utility model is as follows: When the rotor core 8 is in the automatic production line, after the wire is installed on the rotor core 8, when the rotor core 8 needs to be cast with thermosetting plastic, the rotor core 8 is conveyed to the lifting seat 63 of the automatic injection molding device on the rotor line of this utility model by the conveyor belt; First, the mold closing cylinder 221 drives the two closing modules 222 to separate, forming the motor injection cavity 100. The lifting cylinder 62 works, driving the lifting cylinder 62 to push the lifting seat 63 to rise, sending the rotor core 8 on the lifting seat 63 upward into the motor injection cavity 100. Then, the mold closing cylinder 221 drives the two closing modules 222 to move relative to each other, fixing the rotor core 8, and placing the guide plate 43 above the rotor core 8.

[0037] Next, the upper mold assembly 4 descends, and the upper heat insulation plate 411, upper locking plate 412, and upper ejector plate 413 press against each other in sequence, pressing the upper ejector plate 413 above the guide plate 43. The piston rod of the injection cylinder 51 pushes the thermosetting plastic through the injection tube 52 into the guide plate 43, then flows into the guide hole 430 through the guide groove 431, and is then evenly injected into one end of the rotor core 8. Under the pressure of the injection cylinder 51, the thermosetting plastic flows from one end of the rotor core 8 through the groove to the other end of the rotor core 8. Under the continuous pressure of the injection cylinder 51, thermosetting plastic fills the gaps at both ends of the rotor core 8 in the entire motor injection cavity 100 and the slot. After injection molding, the upper mold assembly 4 rises, and the upper heat insulation plate 411, upper locking plate 412, and upper ejector plate 413 separate in sequence. The upper ejector plate 413 disengages the guide plate 43, and the sliding plate 74 in the sprue material taking assembly 7 extends between the upper locking plate 412 and the upper ejector plate 413 to remove the sprue material and place it on the sliding plate 74 for removal. Then, the mold closing cylinder 221 drives the two closing modules 222 to separate, and the lifting cylinder 62 pushes the lifting seat 63 to descend, placing the molded rotor core 8 back onto the conveyor belt and sending it back to the rotor core 8 for further processing on the automatic production line. The automatic production line then sends the next rotor core 8 to the automatic injection molding device on a rotor line, and so on.

[0038] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the present utility model, and these should also be considered to fall within the protection scope of the present utility model.

Claims

1. An in-line automatic injection-molding apparatus for rotors, characterized by The utility model provides a mould closing operation platform (1) and the program control box (10) of setting in mould closing operation platform (1) one side, mould closing operation platform (1) on setting has lower mould assembly (2) and upper die mounting plate (3), on upper die mounting plate (3) setting has upper die assembly (4) and injection assembly (5), upper die assembly (4) includes upper die plate (41) and upper die drive motor (42), injection assembly (5) includes injection cylinder (51) and injection tube (52), upper die plate (41) on setting has pouring gate (410), the lower end of injection tube (52) and pouring gate (410) intercommunication, setting has deflector (43) under pouring gate (410), lower mould assembly (2) includes lower mould seat (21) and the two mould closing device (22) of symmetry setting, setting has jacking assembly (6) under mould closing operation platform (1), jacking assembly (6) includes jacking mounting plate (61) and jacking cylinder (62), the piston rod upper end of jacking cylinder (62) is provided with jacking seat (63) for pushing rotor iron core (8), the jacking seat (63) is matched with conveyer belt, and conveyer belt sends rotor iron core (8) to jacking seat (63), setting has water gap material taking assembly (7) in the lateral direction of mould closing operation platform (1).

2. A device for in-line automatic injection of a rotor according to claim 1, characterized in that: Setting has movable slot (20) in lower mould seat (21), each mould closing device (22) includes mould closing cylinder (221), the piston rod of mould closing cylinder (221) is provided with mould closing module (222), two mould closing cylinders (221) respectively push corresponding mould closing module (222) and mutually abut to enclose motor injection cavity (100), motor injection cavity (100) is used for placing rotor iron core (8).

3. A device for in-line automatic injection of a rotor according to claim 2, characterized in that: Two mould closing modules (222) are half circular ring shape of shape symmetry.

4. A device for in-line automatic injection of a rotor according to claim 3, characterized in that: Each mould closing module (222) is provided with heating device (23).

5. A device for automatic in-line injection molding of a rotor wire according to claim 1, characterized in that: Upper die plate (41) includes upper heat insulation plate (411), upper die locking plate (412) and upper demoulding plate (413) that set gradually, injection tube (52) penetrates upper heat insulation plate (411), upper die locking plate (412) and upper demoulding plate (413) gradually, deflector (43) is set below upper demoulding plate (413).

6. A device for automatic in-line injection molding of a rotor wire according to claim 5, characterized in that: Setting has flow guide groove (431) on deflector (43), setting has flow guide hole (430) on flow guide groove (431).

7. An in-line automatic injection device for a rotor according to claim 1, wherein: Still setting has lifting control cylinder (31) on upper die mounting plate (3), the piston rod of lifting control cylinder (31) passes through upper die mounting plate (3) and is connected on mould closing operation platform (1), setting has a plurality of lifting movable rods (32) between upper die mounting plate (3) and mould closing operation platform (1).

8. An in-line automatic injection device for a rotor according to claim 1, wherein: Water gap material taking assembly (7) includes water gap material mounting plate (71), setting has a pair of slide rail (72) and water gap material push rod (73) on water gap material mounting plate (71), setting has sliding plate (74) on slide rail (72), one end of sliding plate (74) and water gap material push rod (73) synchronous connection.

9. An in-line automatic injection device for a rotor according to claim 1, wherein: The jacking seat (63) comprises a rotor core fixing column (631) and a motor bottom sealing plate (632).

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