Motor self-adhesive stator and rotor iron core production process and die thereof

Abstract

The invention relates to a motor self-adhesion stator and rotor iron core production process. The process comprises the following steps: (1) spraying glue A on the upper surface of a material belt in advance before the material belt enters a mold; (2) the material belt enters the die and firstly reaches a guide hole punching station, and the die punches the two sides of the material belt to form guide holes; (3) the material belt reaches a center hole punching station, and a center hole is punched and formed through the die; (4) the material belt reaches a dispensing station, and the lower surface of the material belt is coated with glue B through the mold; (5) the material belt reaches a blanking station, and a thin iron sheet is stamped from the material belt through the die; the motor self-adhesion stator and rotor iron core production process and the mold thereof are reasonable in design, a plurality of iron sheets can be self-adhered to form the iron core on one set of mold, the glue A and the glue B are fused to form a very good isolation layer, eddy current is controlled on a very small single lamination cross section, iron loss is reduced, the production efficiency is improved, and the production cost is reduced. And the iron core sheet can be thinner, so that the energy conversion efficiency of the motor is improved by 5-10%, the iron loss is reduced by about 10-15%, and the high-performance requirement of the motor is met.

Description

Technical Field

[0001] The invention relates to the field of motor stators and rotors, and in particular to a production process for a motor self-adhesive stator and rotor iron core and a mold thereof. Background Art

[0002] In the prior art, the stator and rotor cores of the motor are formed by welding or riveting multiple iron sheets with mortise and tenon structures. As the power density of the motor increases, the passages formed by welding or riveting with mortise and tenon structures are prone to form eddy currents on the macroscopic cross-section, causing heat. As today's motors pursue high performance and low loss, the traditional core process methods can no longer provide further significant help in improving motor performance, and the market is in urgent need of a new motor core production process. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides a production process for a motor self-adhesive stator and rotor core and a mold thereof. The specific technical solution is as follows:

[0004] A production process for a motor self-bonding stator and rotor core, comprising the following steps:

[0005] ① The material strip is sprayed with A glue on the upper surface before entering the mold;

[0006] ② The material strip enters the mold and first reaches the guide hole punching station, where the mold punches out guide holes on both sides of the material strip; ③ The material strip reaches the center hole punching station, where the mold punches out the center hole;

[0007] ④ When the material strip arrives at the glue dispensing station, the mold applies B glue to the lower surface of the material strip;

[0008] ⑤ The material strip arrives at the blanking station, and the die punches out a thin iron sheet from the material strip;

[0009] ⑥ Repeat steps ② to ⑤ continuously, multiple thin iron sheets are stacked in the blanking chute, the thin iron sheet of the upper layer is melt-bonded to the thin iron sheet of the lower layer through glue A and glue B, and multiple thin iron sheets are stacked and glued together to form an iron core.

[0010] As a preferred solution of the process of the present invention, the iron core is a stator iron core or a rotor iron core.

[0011] As a preferred embodiment of the process of the present invention, glue A and glue B are anaerobic adhesives. Glue A will not solidify when attached to the upper surface of the material strip alone, and glue B will not solidify when attached to the lower surface of the material strip alone. Glue A and glue B solidify when they contact each other in the blanking trough.

[0012] A self-adhesive stator and rotor core mold for a motor is used to realize the above-mentioned production process. The mold includes an upper mold assembly and a lower mold assembly. The upper mold assembly is located above the lower mold assembly. The material strip passes between the upper mold assembly and the lower mold assembly. The upper mold assembly is provided with a guide hole punching station, a center hole punching station, and an iron sheet blanking station. The lower mold assembly is provided with a glue dispensing station and a blanking trough. The blanking trough corresponds to the position of the iron sheet blanking station. The material strip passes through the guide hole punching station, the center hole punching station, the glue dispensing station, and the iron sheet blanking station in sequence.

[0013] As a preferred solution of the present invention, a guide hole punching needle is installed at the guide hole punching station, a center hole punching needle is installed at the center hole punching station, a blanking punch is installed at the iron sheet blanking station, the blanking punch is located directly above the blanking trough, and a glue dispensing mechanism is installed at the glue dispensing station.

[0014] As a preferred solution of the present invention, the glue dispensing mechanism includes a glue dispensing machine, a glue guide tube, a glue dispensing cylinder, a floating block and a glue dispensing head. The glue dispensing machine is located outside the mold, and the glue guide tube extends into the lower mold assembly. The glue dispensing machine transports glue B to the glue dispensing head through the glue guide tube. The glue dispensing head is installed at the floating block, and the glue dispensing cylinder drives the floating block to rise so that the glue dispensing head is close to the material strip.

[0015] As a preferred solution of the present invention, the upper mold assembly includes an upper mold base, an upper pad, an upper clamping plate and an upper stripping plate. The upper pad is installed under the upper mold base, the upper clamping plate is installed under the upper pad, and the upper stripping plate is installed under the upper clamping plate. When the upper and lower mold assemblies are closed, the guide hole punch, the center hole punch and the blanking punch extend from the bottom of the upper stripping plate.

[0016] As a preferred solution of the present invention, the lower mold assembly includes a lower support plate, a lower mold base, a lower pad, and a lower mold plate. The lower mold base is installed above the lower support plate, the lower pad is installed above the lower mold base, the lower mold plate is installed above the lower pad, the floating block is installed in the lower mold plate, and the blanking chute is arranged in the lower mold plate.

[0017] As a preferred solution of the present invention, a waste cutter is installed at the rear end of the upper mold assembly.

[0018] Beneficial effects: The present invention provides a production process for the self-adhesive stator and rotor core of a motor and its mold design is reasonable, and multiple iron sheets can be self-adhesively bonded into an iron core on a set of molds. The A glue and the B glue can be melted to form a very good isolation layer, and the eddy current can be controlled on a very small single laminate cross-section to reduce iron loss. Moreover, the iron sheet can be made thinner, thereby improving the energy conversion efficiency of the motor by 5-10%, reducing the iron loss by about 10-15%, and meeting the high performance requirements of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a flow chart of the process of the present invention;

[0020] Figure 2It is a front view of the mold of the present invention;

[0021] Figure 3 is a side view of the mold of the present invention;

[0022] Figure 4 It is a schematic diagram of the processing of the material strip of the present invention passing through each work station in sequence. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0024] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figure 1 As shown, a production process for a motor self-bonding stator and rotor core includes the following steps:

[0027] ① The material strip is sprayed with A glue on the upper surface before entering the mold;

[0028] ② The material strip enters the mold and first reaches the guide hole punching station, where the mold punches out guide holes on both sides of the material strip; ③ The material strip reaches the center hole punching station, where the mold punches out the center hole;

[0029] ④ When the material strip arrives at the glue dispensing station, the mold applies B glue to the lower surface of the material strip;

[0030] ⑤ The material strip arrives at the blanking station, and the die punches out a thin iron sheet from the material strip;

[0031] ⑥ Repeat steps ② to ⑤ continuously, multiple thin iron sheets are stacked in the blanking chute, the thin iron sheet of the upper layer is melt-bonded to the thin iron sheet of the lower layer through glue A and glue B, and multiple thin iron sheets are stacked and glued together to form an iron core.

[0032] In the process of the present invention, the iron core produced by the process can be a stator iron core or a rotor iron core. In addition, glue A and glue B are anaerobic adhesives, and glue A and glue B are two groups of components of anaerobic adhesives. Glue A will not solidify when it is attached to the upper surface of the material strip alone, and glue B will not solidify when it is attached to the lower surface of the material strip alone. Glue A and glue B solidify when they contact each other in the blanking chute.

[0033] like Figure 2-4 As shown, a motor self-adhesive stator and rotor core mold is used to realize the above-mentioned production process. The mold includes an upper mold assembly and a lower mold assembly. The upper mold assembly is located above the lower mold assembly. The material strip 1 passes between the upper mold assembly and the lower mold assembly. The upper mold assembly is provided with a guide hole punching station A, a center hole punching station B, and an iron sheet blanking station C. The lower mold assembly is provided with a glue dispensing station D and a blanking trough 2. The blanking trough 2 corresponds to the position of the iron sheet blanking station C. The material strip 1 passes through the guide hole punching station A, the center hole punching station B, the glue dispensing station D, and the iron sheet blanking station C in sequence. In this embodiment, the glue dispensing station D and the iron sheet blanking station are also provided with empty stations.

[0034] Specifically, the guide hole punching station A is installed with a guide hole punch needle 3, the center hole punching station B is installed with a center hole punch needle 4, the iron sheet blanking station C is installed with a blanking punch 5, the blanking punch 5 is located directly above the blanking trough 2, and the glue dispensing station D is installed with a glue dispensing mechanism.

[0035] Specifically, the glue dispensing mechanism includes a glue dispensing machine 6, a glue guide tube 7, a glue dispensing cylinder 8, a floating block 9 and a glue dispensing head 10. The glue dispensing machine 6 is located outside the mold, and the glue guide tube 7 extends into the lower mold assembly. The glue dispensing machine 6 conveys B glue to the glue dispensing head 6 through the glue guide tube 7. The glue dispensing head 6 is installed at the floating block 9. The glue dispensing cylinder 8 drives the floating block 9 to rise so that the glue dispensing head 10 is close to the material belt. The glue dispensing head 10 opens to spray B glue onto the lower surface of the material belt.

[0036] Specifically, the upper die assembly includes an upper die seat 11, an upper pad 12, an upper clamping plate 13 and an upper stripping plate 14. The upper pad 12 is installed below the upper die seat 11, the upper clamping plate 13 is installed below the upper pad 12, and the upper stripping plate 14 is installed below the upper clamping plate 3. When the upper and lower die assemblies are closed, the guide hole punch 3, the center hole punch 4, and the blanking punch 5 extend from the bottom of the upper stripping plate 14. In addition, the lower die assembly includes a lower supporting plate 15, a lower die seat 16, a lower pad 17, and a lower template 18. The lower die seat 16 is installed above the lower supporting plate 15, the lower pad 17 is installed above the lower die seat 16, the lower template 16 is installed above the lower pad 17, the floating block 9 is installed in the lower template 18, and the blanking trough 2 is provided in the lower template 18.

[0037] Specifically, a waste cutter 19 is installed at the rear end of the upper mold assembly. When the upper and lower molds are closed, the waste remaining in the material strip will be cut out in one section, which is convenient for collecting waste. In addition, guide columns are installed on the upper and lower template brackets for guidance.

[0038] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementation modes. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A production process for self-bonding stator and rotor cores of motors, characterized in that: The following steps are involved: ① The material strip is sprayed with A glue on the upper surface before entering the mold; ② The material strip enters the mold and first reaches the punching station, where the mold punches out guide holes on both sides of the material strip; ③The material strip arrives at the center hole punching station, and the mold punches out the center hole; ④ When the material strip arrives at the glue dispensing station, the mold applies B glue to the lower surface of the material strip; ⑤ The material strip arrives at the blanking station, and the die punches out a thin iron sheet from the material strip; ⑥ Repeat steps ② to ⑤ continuously, multiple thin iron sheets are stacked in the blanking chute, the thin iron sheet of the upper layer is melt-bonded to the thin iron sheet of the lower layer through glue A and glue B, and multiple thin iron sheets are stacked and glued together to form an iron core.

2. A process for producing a motor self-bonding stator and rotor core according to claim 1, characterized in that: The iron core is a stator iron core or a rotor iron core.

3. The process for producing a motor self-bonding stator and rotor core according to claim 1, characterized in that: Glue A and glue B are anaerobic adhesives. Glue A will not solidify when it is attached to the upper surface of the material strip alone, and glue B will not solidify when it is attached to the lower surface of the material strip alone. Glue A and glue B solidify when they are in contact with each other in the blanking chute.

4. A motor self-adhesive stator and rotor core mold, characterized in that: Used to implement the production process described in any one of claims 1-3, the mold includes an upper mold assembly and a lower mold assembly, the upper mold assembly is located above the lower mold assembly, the material strip passes between the upper mold assembly and the lower mold assembly, the upper mold assembly is provided with a guide hole punching station, a center hole punching station, and an iron sheet blanking station, the lower mold assembly is provided with a glue dispensing station and a blanking trough, the blanking trough corresponds to the position of the iron sheet blanking station, and the material strip passes through the guide hole punching station, the center hole punching station, the glue dispensing station, and the iron sheet blanking station in sequence.

5. The motor self-adhesive stator and rotor core mold according to claim 4, characterized in that: The guide hole punching station is equipped with a guide hole punching needle, the center hole punching station is equipped with a center hole punching needle, the iron sheet blanking station is equipped with a blanking punch, the blanking punch is located directly above the blanking trough, and the glue dispensing station is equipped with a glue dispensing mechanism.

6. The motor self-adhesive stator and rotor core mold according to claim 5, characterized in that: The dispensing mechanism includes a dispensing machine, a glue guide tube, a dispensing cylinder, a floating block and a dispensing head. The dispensing machine is located outside the mold, and the glue guide tube extends into the lower mold assembly. The dispensing machine transports B glue to the dispensing head through the glue guide tube. The dispensing head is installed at the floating block, and the dispensing cylinder drives the floating block to rise so that the dispensing head is close to the material strip.

7. The motor self-adhesive stator and rotor core mold according to claim 4, characterized in that: The upper die assembly includes an upper die base, an upper pad, an upper clamping plate and an upper stripping plate. The upper pad is installed under the upper die base, the upper clamping plate is installed under the upper pad, and the upper stripping plate is installed under the upper clamping plate. When the upper and lower die assemblies are closed, the guide hole punch, the center hole punch and the blanking punch extend from the bottom of the upper stripping plate.

8. The motor self-adhesive stator and rotor core mold according to claim 6, characterized in that: The lower die assembly comprises a lower supporting plate, a lower die base, a lower pad, and a lower template. The lower die base is installed above the lower supporting plate, the lower pad is installed above the lower die base, the lower template is installed above the lower pad, the floating block is installed in the lower template, and the blanking chute is arranged in the lower template.

9. The motor self-adhesive stator and rotor core mold according to claim 7, characterized in that: A waste cutter is installed at the rear end of the upper die assembly.

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