An injection mold for an integrated stepping motor stator

Abstract

The invention discloses an integrated stepper motor stator and an injection mold thereof. The integrated stepper motor stator comprises an injection molding skeleton and two middle pole pieces, and the two middle pole pieces are arranged in the injection molding skeleton, and the teeth of the middle pole piece are arranged at the upper end of the hole wall of the rotor hole arranged at the upper end of the injection molding skeleton, and the outer side of the teeth is in close contact with the upper end of the hole wall of the rotor hole; the injection mold comprises an upper mold plate and a lower mold plate, the lower end surface of the upper mold plate is provided with an upper mold core, the upper end surface of the lower mold plate is provided with a lower mold core corresponding to the upper mold core, and a product mold cavity is provided between the lower mold core and the upper mold core. The invention has novel structural design, simple structure, no positioning notch, increases the winding wire diameter of the stator, and greatly improves the performance of the stator; the teeth of the middle pole piece are exposed, which increases the rotating magnetic field with the rotor, and greatly improves the quality and performance of the stepper motor; the injection mold of the integrated stepper motor stator is accurately positioned, which effectively improves the injection molding quality and performance of the stator.

Description

Technical Field

[0001] The invention relates to the technical field of stepper motors, and in particular to an injection mold for an integrated stepper motor stator. Background Art

[0002] Stepper motors are required in the fields of air conditioning, monitoring pan-tilt rotation, automatic toilets, etc. For example, for a monitoring pan-tilt, the zoom action of the monitoring pan-tilt lens is generally driven by a stepper motor.

[0003] It should be pointed out that for a stepper motor, it includes a stator assembly and a rotor assembly; the stator assembly of a stepper motor generally includes a front winding frame, a rear winding frame, and two middle pole pieces, and an integrated stator includes two middle pole pieces and an injection molded frame, such as Figure 1 As shown, in the existing integrated stepper motor stator, due to the stamping positioning, there will be a gap in the upper end of the arc edge of the upper end of the middle pole piece, so there will be a gap in the upper end of the injection molded skeleton, which will lead to a gap in the upper end of the stator, so that the wire diameter of the stator winding can only fill the gap, and the maximum performance of the stator cannot be fully utilized; in addition, since the existing stepper motor stator adopts hardware injection molding, the teeth of the middle pole piece will be wrapped by the injection molded skeleton, and only the inner side of the teeth is exposed to sense the magnetic field generated by the rotation of the rotor, thereby reducing the quality and performance of the stepper motor. Summary of the invention

[0004] The purpose of the present invention is to provide an injection mold for an integrated stepper motor stator in view of the deficiencies in the prior art. The integrated stepper motor stator has a novel structural design, a simple structure, no positioning notches, and increases the winding wire diameter of the stator, greatly improving the performance of the stator; the teeth of the middle pole piece are exposed, which increases the rotating magnetic field with the rotor, greatly improving the quality and performance of the stepper motor; the injection mold for the integrated stepper motor stator is accurately positioned, effectively improving the injection molding quality and performance of the stator.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions.

[0006] An injection mold for an integrated stepper motor stator, the integrated stepper motor stator comprising an injection molded frame and two middle pole pieces, wherein the two middle pole pieces are arranged in the injection molded frame, a winding groove 1 and a winding groove 2 are arranged at the upper end of the injection molded frame, and the upper and lower end walls of the winding groove 1 and the winding groove 2 are arranged in a ring shape, and the side walls of the winding groove 1 and the winding groove 2 have no notches, the two middle pole pieces are arranged in the middle end wall of the winding groove 1 and the winding groove 2, and the turned teeth of the middle pole piece are arranged at the upper end of the hole wall of the rotor hole arranged at the upper end of the injection molded frame, and the outer side of the turned teeth is closely attached to the upper end of the hole wall of the rotor hole;

[0007] The injection mold includes an upper mold plate and a lower mold plate, wherein an upper mold core is mounted on the lower end surface of the upper mold plate, a lower mold core corresponding to and matching the upper mold core is mounted on the upper end surface of the lower mold plate, a product mold cavity is arranged between the lower mold core and the upper mold core, an upper insert is mounted on the upper end portion of the product mold cavity, and upward-turned tooth positioning teeth arranged in a tooth shape are arranged on the lower end portion of the upper insert, a lower insert is mounted on the lower end of the product mold cavity, and downward-turned tooth positioning teeth arranged in a tooth shape are arranged on the upper end portion of the lower insert, a vertically arranged ejector pin is sleeved in the lower insert, and an ejector pin head arranged in a star-tooth shape is arranged on the upper end portion of the ejector pin.

[0008] Wherein, a plurality of fixing holes and fixing columns are arranged on the upper end of the middle electrode sheet.

[0009] Wherein, a panel is installed at the upper end of the upper template, an upper pad is installed between the panel and the upper template, and a vertically arranged nozzle is installed at the upper end of the panel.

[0010] Wherein, a lower pad is installed at the lower end of the lower template, a bottom plate is installed at the lower end of the lower pad, and square iron is installed between the bottom plate and the lower pad.

[0011] Among them, a horizontally arranged slide is installed at the side end of the product mold cavity, and the slide is installed at the upper end of the slide seat. A vertically arranged shovel is installed at the side end of the slide seat, and the shovel is fixedly installed at the lower end of the upper template.

[0012] Wherein, an inclined guide column is installed at the upper end of the sliding seat, and the inclined guide column is fixedly installed at the lower end of the upper template.

[0013] The beneficial effects of the present invention are as follows: the injection mold of the integrated stepper motor stator described in the present invention comprises an injection molded frame and two middle pole pieces, and the two middle pole pieces are arranged in the injection molded frame, a winding groove 1 and a winding groove 2 are arranged at the upper end of the injection molded frame, and the upper and lower end walls of the winding groove 1 and the winding groove 2 are arranged in a ring shape, and the side walls of the winding groove 1 and the winding groove 2 have no notches, the two middle pole pieces are arranged in the middle end wall of the winding groove 1 and the winding groove 2, and the turned teeth of the middle pole piece are arranged at the upper end of the hole wall of the rotor hole arranged at the upper end of the injection molded frame, and the outer side of the turned teeth is tightly attached to the rotor hole. The upper end of the hole wall of the rotor hole; the injection mold includes an upper template and a lower template, the lower end surface of the upper template is equipped with an upper mold core, the upper end surface of the lower template is equipped with a lower mold core corresponding to the upper mold core, and a product mold cavity is arranged between the lower mold core and the upper mold core, an upper insert is installed at the upper end of the product mold cavity, and the lower end of the upper insert is provided with an upward-turned tooth positioning tooth arranged in a tooth shape, a lower insert is installed at the lower end of the product mold cavity, and the upper end of the lower insert is provided with a downward-turned tooth positioning tooth arranged in a tooth shape, a vertically arranged ejector is sleeved in the lower insert, and an ejector head arranged in a star-tooth shape is provided at the upper end of the ejector. The present invention is provided with winding groove 1 and winding groove 2 at the upper end of the injection molding skeleton, and the upper and lower end walls of the winding groove 1 and winding groove 2 are arranged in a ring shape, so that there is no gap in the side walls of the winding groove 1 and winding groove 2, so that the winding groove 1 and winding groove 2 can be fully wound, the winding wire diameter is increased, and the performance of the stator is greatly improved; two middle pole pieces are arranged in the middle end wall of the winding groove 1 and winding groove 2, and the teeth of the middle pole piece are arranged at the upper end of the hole wall of the rotor hole arranged at the upper end of the injection molding skeleton, and the outer side of the teeth is closely attached to the upper end of the hole wall of the rotor hole, so that the teeth are completely exposed from the upper end of the hole wall of the rotor hole, thereby increasing the rotating magnetic field with the rotor, and greatly improving the quality and performance of the stepping motor; an upper insert is installed at the upper end of the product mold cavity, and a The upward-turned tooth positioning teeth are arranged in a tooth shape, and the lower end of the product mold cavity is equipped with a lower insert, and the upper end of the lower insert is provided with downward-turned tooth positioning teeth arranged in a tooth shape, and the lower insert is provided with a vertically arranged ejector pin, and the upper end of the ejector pin is provided with an ejector pin head arranged in a star-tooth shape. The tooth tips of the upward-turned tooth positioning teeth and the downward-turned tooth positioning teeth are positioned, and the positioning is accurate, thereby improving the injection molding quality and performance of the stator. Therefore, the present invention has a novel structural design, a simple structure, no positioning notch, increases the winding wire diameter of the stator, and greatly improves the performance of the stator; the teeth of the middle pole piece are exposed, which increases the rotating magnetic field with the rotor, greatly improving the quality and performance of the stepper motor; the injection mold of the stator of the integrated stepper motor is accurately positioned, which effectively improves the injection molding quality and performance of the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below with the aid of the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0015] Figure 1 It is a structural schematic diagram of an existing stepping motor stator;

[0016] Figure 2 It is a structural schematic diagram of the stator of the present invention;

[0017] Figure 3 It is a schematic diagram of the structure of the electrode plate in the present invention;

[0018] Figure 4 It is a structural schematic diagram of the stator injection mold of the present invention;

[0019] Figure 5 It is a schematic diagram of the structure of a part of the stator injection mold of the present invention.

[0020] exist Figure 2-5 Included are:

[0021] 1——Injection molded frame 11——Winding slot 1

[0022] 12——Winding slot 2 13——Rotor hole

[0023] 2——Middle plate 21——Tine turning

[0024] 22——Fixing hole 23——Fixing column

[0025] 3——Upper mold plate 31——Upper mold core

[0026] 32——Panel 33——Upper pad

[0027] 34——Jiaozu 4——Lower template

[0028] 41——lower die core 42——lower pad

[0029] 43——Bottom plate 44——Square iron

[0030] 5——Product mold cavity 51——Upper insert

[0031] 511——Upward turning tooth positioning tooth 52——Lower insert

[0032] 521——Downward turning tooth positioning tooth 53——Thrust pin

[0033] 531——Ejector head 54——Slider

[0034] 55——Traveling seat 56——Shovel machine

[0035] 57——Inclined guide column. DETAILED DESCRIPTION

[0036] The present invention is described below in conjunction with specific implementation methods.

[0037] like Figure 2-5 As shown, an injection mold for an integrated stepper motor stator, the integrated stepper motor stator includes an injection molded skeleton 1 and two middle pole pieces 2, and the two middle pole pieces 2 are arranged in the injection molded skeleton 1, a winding groove 11 and a winding groove 2 12 are arranged at the upper end of the injection molded skeleton 1, and the upper and lower end walls of the winding groove 11 and the winding groove 2 12 are arranged in a ring shape, and the side walls of the winding groove 11 and the winding groove 2 12 have no notches, the two middle pole pieces 2 are arranged in the middle end wall of the winding groove 11 and the winding groove 2 12, and the turned teeth 21 of the middle pole piece 2 are arranged at the upper end of the hole wall of the rotor hole 13 arranged at the upper end of the injection molded skeleton 1, and the outer side of the turned teeth 21 is close to the upper end of the hole wall of the rotor hole 13;

[0038] The injection mold includes an upper mold plate 3 and a lower mold plate 4, wherein an upper mold core 31 is mounted on the lower end surface of the upper mold plate 3, a lower mold core 41 corresponding to and matching the upper mold core 31 is mounted on the upper end surface of the lower mold plate 4, and a product mold cavity 5 is arranged between the lower mold core 41 and the upper mold core 31, an upper insert 51 is mounted on the upper end portion of the product mold cavity 5, and upward-turned tooth positioning teeth 511 arranged in a tooth shape are arranged on the lower end portion of the upper insert 51, a lower insert 52 is mounted on the lower end of the product mold cavity 5, and downward-turned tooth positioning teeth 521 arranged in a tooth shape are arranged on the upper end portion of the lower insert 52, a vertically arranged ejector pin 53 is sheathed in the lower insert 52, and an ejector pin head 531 arranged in a star-tooth shape is arranged on the upper end portion of the ejector pin 53.

[0039] Furthermore, a plurality of fixing holes 22 and fixing columns 23 are provided at the upper end of the middle electrode sheet 2 .

[0040] Furthermore, a panel 32 is installed at the upper end of the upper template 3 , and an upper pad 33 is installed between the panel 32 and the upper template 3 . A nozzle 34 arranged vertically is installed at the upper end of the panel 32 .

[0041] Furthermore, a lower pad 42 is installed at the lower end of the lower template 4 , a bottom plate 43 is installed at the lower end of the lower pad 42 , and a square iron 44 is installed between the bottom plate 43 and the lower pad 42 .

[0042] Furthermore, a horizontally arranged slide 54 is installed at the side end of the product mold cavity 5, and the slide 54 is installed at the upper end of the slide seat 55. A vertically arranged shovel 56 is installed at the side end of the slide seat 55, and the shovel 56 is fixedly installed at the lower end of the upper template 3.

[0043] Furthermore, an inclined guide column 57 is installed at the upper end of the slide seat 55, and the inclined guide column 57 is fixedly installed at the lower end of the upper template 3.

[0044] Further explanation is required. In the present invention, a winding groove 11 and a winding groove 2 12 are arranged at the upper end of the injection molded frame 1, and the upper and lower end walls of the winding groove 11 and the winding groove 2 12 are arranged in a ring shape, and the side walls of the winding groove 11 and the winding groove 2 12 have no gaps. The structural design makes the side walls of the winding groove 11 and the winding groove 2 12 have no gaps, so that the winding groove 11 and the winding groove 2 12 can be fully wound, increasing the winding wire diameter, and greatly improving the fixed The performance of the stepper motor is improved; the two middle pole pieces 2 are arranged in the middle end wall of the winding groove 11 and the winding groove 2 12, and the turning teeth 21 of the middle pole piece 2 are arranged at the upper end of the hole wall of the rotor hole 13 arranged at the upper end of the injection molding skeleton 1, and the outer side of the turning teeth 21 is close to the upper end of the hole wall of the rotor hole 13. The structural design makes the turning teeth 21 completely exposed to the upper end of the hole wall of the rotor hole 13, thereby increasing the rotating magnetic field with the rotor, greatly improving the quality and performance of the stepper motor; by the upper end of the product mold cavity 5 An upper insert 51 is installed at the end, and an upper tooth positioning tooth 511 arranged in a tooth shape is provided at the lower end of the upper insert 51, a lower insert 52 is installed at the lower end of the product mold cavity 5, and a lower tooth positioning tooth 521 arranged in a tooth shape is provided at the upper end of the lower insert 52, a vertically arranged ejector 53 is sleeved in the lower insert 52, and an ejector head 531 arranged in a star tooth shape is provided at the upper end of the ejector 53; the tooth tip of the tooth 21 is positioned by the upper tooth positioning tooth 511 and the lower tooth positioning tooth 521, and the positioning is accurate, thereby improving the injection molding quality and performance of the stator; therefore, the present invention has novel structural design, simple structure, no positioning notch, increases the winding wire diameter of the stator, and greatly improves the performance of the stator; the tooth of the middle pole piece is exposed, which increases the rotating magnetic field with the rotor, greatly improving the quality and performance of the stepper motor; the injection mold of the stator of the integrated stepper motor has the advantages of accurate positioning, which effectively improves the injection molding quality and performance of the stator.

[0045] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. An injection mold for an integrated stepping motor stator, characterized in that: The integrated stepping motor stator comprises an injection molded frame (1) and two middle pole pieces (2), and the two middle pole pieces (2) are arranged in the injection molded frame (1), and a winding groove (11) and a winding groove (12) are arranged at the upper end of the injection molded frame (1), and the upper and lower end walls of the winding groove (11) and the winding groove (12) are arranged in a ring shape, and the side walls of the winding groove (11) and the winding groove (12) have no notch, the two middle pole pieces (2) are arranged in the middle end wall of the winding groove (11) and the winding groove (12), and the turned teeth (21) of the middle pole piece (2) are arranged at the upper end of the hole wall of the rotor hole (13) arranged at the upper end of the injection molded frame (1), and the outer side of the turned teeth (21) is closely attached to the upper end of the hole wall of the rotor hole (13); The injection mold comprises an upper mold plate (3) and a lower mold plate (4); an upper mold core (31) is mounted on the lower end surface of the upper mold plate (3); a lower mold core (41) corresponding to and matching the upper mold core (31) is mounted on the upper end surface of the lower mold plate (4); a product mold cavity (5) is arranged between the lower mold core (41) and the upper mold core (31); an upper insert (51) is mounted on the upper end of the product mold cavity (5); and upward-turned tooth positioning teeth (511) arranged in a tooth shape are arranged on the lower end of the upper insert (51); a lower insert (52) is mounted on the lower end of the product mold cavity (5); and downward-turned tooth positioning teeth (521) arranged in a tooth shape are arranged on the upper end of the lower insert (52); and a vertically arranged ejector pin (53) is sleeved inside the lower insert (52); and an ejector pin head (531) arranged in a star tooth shape is arranged on the upper end of the ejector pin (53).

2. The injection mold of the integrated stepping motor stator according to claim 1, characterized in that: A plurality of fixing holes (22) and fixing columns (23) are provided at the upper end of the middle pole piece (2).

3. The injection mold of the integrated stepping motor stator according to claim 1, characterized in that: A panel (32) is installed at the upper end of the upper template (3), an upper pad (33) is installed between the panel (32) and the upper template (3), and a nozzle (34) arranged vertically is installed at the upper end of the panel (32).

4. The injection mold of the integrated stepping motor stator according to claim 1, characterized in that: A lower pad (42) is installed at the lower end of the lower template (4), a bottom plate (43) is installed at the lower end of the lower pad (42), and a square iron (44) is installed between the bottom plate (43) and the lower pad (42).

5. The injection mold of the integrated stepping motor stator according to claim 1, characterized in that: A horizontally arranged slide (54) is installed at the side end of the product mold cavity (5), and the slide (54) is installed at the upper end of the slide seat (55). A vertically arranged scraper (56) is installed at the side end of the slide seat (55), and the scraper (56) is fixedly installed at the lower end of the upper mold plate (3).

6. The injection mold of the integrated stepping motor stator according to claim 5, characterized in that: An inclined guide column (57) is installed at the upper end of the sliding seat (55), and the inclined guide column (57) is fixedly installed at the lower end of the upper template (3).

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