A forging die for motor magnetic angle

Abstract

The invention discloses a forging die for a motor magnetic angle, comprising a forming upper die, a lower die outer ring and a forming lower die, wherein the forming lower die is located at the bottom end of the forming upper die, the lower die outer ring is located between the forming upper die and the forming lower die, the forming upper die, the lower die outer ring and the forming lower die are surrounded to form a die cavity, an exhaust gap is formed at the connection between the lower die outer ring and the forming lower die, and the exhaust gap and the end of the die cavity are mutually connected; by forming the exhaust gap at the end of the die cavity, when the lower die inner core and the upper die inner core simultaneously squeeze the blank from top to bottom, the squeezed blank moves continuously, and then the blank squeezes the air in the die cavity, and the air is discharged through the exhaust gap connected to the end of the die cavity, thereby reducing the resistance of the gas to the blank moving, so that the blank can reach the end of the die cavity, thereby improving the forging quality of the magnetic angle.

Description

Technical Field

[0001] The invention relates to a forging die, in particular to a forging die used for a motor magnetic angle. Background Art

[0002] Forging dies are widely used in the manufacture of motor magnetic angles. The principle is to close two or more separable upper and lower dies into a closed die cavity, place the metal blank in the die cavity, and squeeze the upper and lower die cores to form the blank in the die, thereby obtaining a precision forging with no flash and near net size that is almost exactly the same shape and size as the die cavity.

[0003] There is no exhaust gap at the end of the existing mold cavity. When the blank is extruded, the air inside the mold cavity cannot be discharged. The gas forms resistance to the blank, so that the blank cannot reach the end of each magnetic corner mold, reducing the forging quality of the magnetic corner. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a forging die for the magnetic corner of a motor, which can solve the technical problem that no exhaust gap is set at the end of the existing die cavity, so that the air inside the die cavity cannot be discharged when the blank is extruded, and the gas forms resistance to the blank, making it impossible for the blank to reach the end of each magnetic corner die.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a forging die for a motor magnetic angle, comprising a forming upper die, a lower die outer ring and a forming lower die, the forming lower die is located at the bottom end of the forming upper die, the lower die outer ring is located between the forming upper die and the forming lower die, the forming upper die, the lower die outer ring and the forming lower die together form a die cavity, an exhaust gap is formed at the connection between the lower die outer ring and the forming lower die, and the exhaust gap and the end of the die cavity are interconnected.

[0006] As a preferred technical solution of the present invention, a magnetic corner blank is arranged in the mold cavity, an upper mold inner core for extruding the top of the magnetic corner blank is arranged at the top of the upper mold outer ring, and a lower mold inner core for extruding the bottom of the magnetic corner blank is arranged at the bottom of the molding lower mold.

[0007] As a preferred technical solution of the present invention, a first spring is sleeved on the outer side of the inner core of the upper mold, the top end of the first spring is connected to the top end of the inner core of the upper mold, and the bottom end of the first spring is connected to the top end of the forming upper mold.

[0008] As a preferred technical solution of the present invention, a second spring is sleeved on the outer side of the inner core of the lower mold, the top end of the second spring is connected to the bottom surface of the molding lower mold, and the bottom end of the second spring is connected to the bottom end of the inner core of the lower mold.

[0009] As a preferred technical solution of the present invention, an upper mold outer ring is arranged on the outer side of the upper molding mold.

[0010] As a preferred technical solution of the present invention, the bottom end of the exhaust gap is screwed with a fixed cylinder with openings at both ends, the fixed cylinder is sealed and connected to the mold cavity through a first sealing gasket, the top end of the fixed cylinder is fixedly connected to a fixing ring, the top surface of the fixing ring is provided with a through hole that penetrates the fixing ring, the middle of the bottom surface of the fixing ring is fixedly connected to a connecting cylinder, the bottom end of the connecting cylinder is provided with an upward mounting groove, a movable rod is passed through the mounting groove, the top end of the movable rod is connected to the mounting groove through a tension spring, the bottom end of the movable rod is fixedly connected to a sealing ring, and the sealing ring is sealed and connected to the bottom opening of the fixed cylinder through a second sealing gasket.

[0011] As a preferred technical solution of the present invention, the through holes are equidistantly arranged on the top of the fixing ring.

[0012] As a preferred technical solution of the present invention, a roller is rotatably connected inside the movable rod, and the movable rod moves up and down in the installation groove through the roller.

[0013] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0014] 1. By forming an exhaust gap at the end of the die cavity, when the lower die inner core and the upper die inner core squeeze the magnetic corner blank at the same time, the extruded magnetic corner blank moves continuously, and then the magnetic corner blank squeezes the air in the die cavity. The air is discharged through the exhaust gap connected to the end of the die cavity, which reduces the resistance of the gas to the blank, allowing the blank to reach the end of the die cavity, thereby improving the forging quality of the magnetic corner;

[0015] 2. By installing a fixed cylinder at the bottom of the mold cavity, when the gas in the mold cavity enters the fixed cylinder through the exhaust gap and the through hole, the high-speed gas impacts the sealing ring, and the sealing ring pulls the movable rod to move, and then the movable rod stretches the tension spring. When the sealing ring drives the movable rod to leave the bottom opening of the fixed cylinder, the gas is discharged smoothly, and then the movable rod is reset under the tension of the tension spring, and the movable rod drives the sealing ring to reset, and the sealing ring is again sealed and connected to the opening of the fixed cylinder through the second sealing gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic cross-sectional structure diagram of the forging die of the present invention;

[0017] Figure 2 for Figure 1 The enlarged structural diagram at a in FIG.

[0018] Figure 3 for Figure 2 The enlarged structural diagram at b in FIG.

[0019] Among them: 1. Inner core of upper die; 2. First spring; 3. Outer ring of upper die; 4. Forming upper die; 5. Outer ring of lower die; 6. Forming lower die; 7. Second spring; 8. Inner core of lower die; 9. Exhaust gap; 10. Fixed cylinder; 101. Fixed ring; 102. Through hole; 103. First sealing gasket; 105. Movable rod; 106. Sealing ring; 107. Second sealing gasket; 108. Connecting cylinder; 109. Tension spring; 110. Mounting groove; 111. Roller; 12. Magnetic corner blank; 13. Cavity. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0021] Example 1

[0022] Please refer to Figures 1 to 3 As shown, the present invention provides a forging die for a motor magnetic angle, comprising a forming upper die 4, a lower die outer ring 5 and a forming lower die 6, wherein the forming lower die 6 is located at the bottom end of the forming upper die 4, and the lower die outer ring 5 is located between the forming upper die 4 and the forming lower die 6, and the forming upper die 4, the lower die outer ring 5 and the forming lower die 6 together form a die cavity 13, an upper die outer ring 3 is arranged on the outer side of the forming upper die 4, an exhaust gap 9 is formed at the connection between the lower die outer ring 5 and the forming lower die 6, the exhaust gap 9 and the end of the die cavity 13 are interconnected, and the air in the die cavity 13 is discharged through the exhaust gap 9, a magnetic angle blank 12 is arranged in the die cavity 13, an upper die inner core 1 for extruding the top end of the magnetic angle blank 12 is arranged at the top end of the upper die outer ring 3, and a lower die inner core 8 for extruding the bottom end of the magnetic angle blank 12 is arranged at the bottom end of the forming lower die 6.

[0023] When in use, when the lower mold inner core 8 and the upper mold inner core 1 squeeze the magnetic corner blank at the same time, the squeezed magnetic corner blank keeps moving, and then the magnetic corner blank squeezes the air in the mold cavity 13, and the air is discharged through the exhaust gap 9 connected to the end of the mold cavity 13, reducing the resistance of the gas to the movement of the blank, so that the blank can reach the end of the mold cavity 13, thereby improving the casting quality of the magnetic corner 12.

[0024] Please refer to Figure 1As shown, a first spring 2 is sleeved on the outer side of the upper mold inner core 1, the top of the first spring 2 is connected to the top of the upper mold inner core 1, the bottom of the first spring 2 is connected to the top of the forming upper mold 4, and a second spring 7 is sleeved on the outer side of the lower mold inner core 8, the top of the second spring 7 is connected to the bottom surface of the forming lower mold 6, and the bottom of the second spring 7 is connected to the bottom of the lower mold inner core 8, so as to facilitate the resetting of the lower mold inner core 8 and the upper mold inner core 1.

[0025] Example 2

[0026] Please refer to Figures 1 to 3 As shown, the present invention provides a forging die for a motor magnetic angle. This embodiment adopts the same technical solution as the first embodiment, except that a fixing cylinder 10 with openings at both ends is screwed on the bottom end of the exhaust gap 9 through a thread, and the fixing cylinder 10 is sealed and connected to the die cavity 13 through a first sealing gasket 103. A fixing ring 101 is fixedly connected to the top end of the fixing cylinder 10, and a through hole 102 that penetrates the fixing ring 101 is formed on the top surface of the fixing ring 101. A connecting cylinder 108 is fixedly connected to the middle of the bottom surface of the fixing ring 101, and an upward mounting groove 110 is formed at the bottom end of the connecting cylinder 108. A movable rod 101 is inserted into the mounting groove 110. 05. The top of the movable rod 105 is connected to the installation groove 110 through a tension spring 109. The bottom of the movable rod 105 is fixedly connected with a sealing ring 106. The sealing ring 106 is sealed and connected to the bottom opening of the fixed tube 10 through a second sealing gasket 107. Through holes 102 are equidistantly arranged at the top of the fixed ring 101. The number of through holes 102 is increased to improve the efficiency of gas passing through the fixed ring 101. The movable rod 105 is rotatably connected with a roller 111. The movable rod 105 moves up and down in the installation groove 110 through the roller 111, so that the movable rod 105 moves more smoothly and the sealing ring 106 can be opened and closed smoothly.

[0027] During use, when the gas in the mold cavity 13 enters the fixed tube 10 through the exhaust gap 9 and the through hole 102, the high-speed gas impacts the sealing ring 106, and the sealing ring 106 pulls the movable rod 105 to move, and then the movable rod 105 stretches the tension spring 109. When the sealing ring 106 drives the movable rod 105 to leave the bottom opening of the fixed tube 10, the gas is discharged smoothly, and then the movable rod 105 is reset under the tension of the tension spring 109, and the sealing ring 106 is reset driven by the movable rod 105. The sealing ring 106 is again sealed and connected to the opening of the fixed tube 10 through the second sealing gasket 107.

[0028] The present invention provides a forging die for a motor magnetic corner. By forming an exhaust gap 9 at the end of a die cavity 13, when the lower die inner core 8 and the upper die inner core 1 simultaneously squeeze the magnetic corner blank, the squeezed magnetic corner blank moves continuously, and then the magnetic corner blank squeezes the air in the die cavity 13, and the air is discharged through the exhaust gap 9 connected to the end of the die cavity 13, thereby reducing the resistance of the gas to the blank moving, so that the blank can reach the end of the die cavity 13, and the casting quality of the magnetic corner 12 is improved; by installing a fixing cylinder 10 at the bottom of the die cavity 13, when the air in the die cavity 13 The gas enters the fixed cylinder 10 through the exhaust gap 9 and the through hole 102, and the high-speed gas impacts the sealing ring 106, which pulls the movable rod 105 to move, and then the movable rod 105 stretches the tension spring 109. When the sealing ring 106 drives the movable rod 105 to leave the bottom opening of the fixed cylinder 10, the gas is discharged smoothly, and then the movable rod 105 is reset under the tension of the tension spring 109, and the sealing ring 106 is reset driven by the movable rod 105. The sealing ring 106 is sealed and connected to the opening of the fixed cylinder 10 again through the second sealing gasket 107.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A forging die for a motor magnetic angle, comprising a forming upper die (4), a lower die outer ring (5) and a forming lower die (6), wherein the forming lower die (6) is located at the bottom end of the forming upper die (4), the lower die outer ring (5) is located between the forming upper die (4) and the forming lower die (6), and the forming upper die (4), the lower die outer ring (5) and the forming lower die (6) together form a die cavity (13), characterized in that: An exhaust gap (9) is formed at the connection between the lower mold outer ring (5) and the molding lower mold (6), and the exhaust gap (9) and the end of the mold cavity (13) are interconnected; The bottom end of the exhaust slit (9) is screwed with a fixed tube (10) with two ends opened, and the fixed tube (10) is sealed and connected to the mold cavity (13) through a first sealing gasket (103). The top end of the fixed tube (10) is fixedly connected to a fixed ring (101). The top surface of the fixed ring (101) is provided with through holes (102) that are mutually connected, and the through holes (102) are equidistantly arranged at the top end of the fixed ring (101). The bottom surface of the fixed ring (101) is fixed in the middle. A connecting tube (108) is fixedly connected, and an upward mounting groove (110) is provided at the bottom end of the connecting tube (108). A movable rod (105) is inserted into the mounting groove (110). The top end of the movable rod (105) is connected to the mounting groove (110) via a tension spring (109). A sealing ring (106) is fixedly connected to the bottom end of the fixed tube (105). The sealing ring (106) is sealed and connected to the bottom opening of the fixed tube (10) via a second sealing pad (107); The movable rod (105) is rotatably connected to a roller (111) inside, and the movable rod (105) moves up and down in the installation groove (110) via the roller (111); When the gas in the mold cavity (13) enters the fixed tube (10) through the exhaust gap (9) and the through hole (102), the high-speed gas impacts the sealing ring (106), and the sealing ring (106) pulls the movable rod (105) to move, and then the movable rod (105) stretches the tension spring (109). When the sealing ring (106) drives the movable rod (105) to leave the bottom opening of the fixed tube (10), the gas is discharged smoothly, and then the movable rod (105) is reset under the tension of the tension spring (109), and the movable rod (105) drives the sealing ring (106) to reset, and the sealing ring (106) is again sealed and connected to the opening of the fixed tube (10) through the second sealing gasket (107).

2. A forging die for a motor magnetic angle according to claim 1, characterized in that: A magnetic corner blank (12) is arranged in the mold cavity (13), an upper mold inner core (1) for extruding the top of the magnetic corner blank (12) is penetrated at the top of the upper mold outer ring (3), and a lower mold inner core (8) for extruding the bottom of the magnetic corner blank (12) is penetrated at the bottom of the molding lower mold (6).

3. A forging die for a motor magnetic angle according to claim 2, characterized in that: A first spring (2) is sleeved on the outer side of the upper mold inner core (1), the top end of the first spring (2) is connected to the top end of the upper mold inner core (1), and the bottom end of the first spring (2) is connected to the top end of the forming upper mold (4).

4. A forging die for a motor magnetic angle according to claim 2, characterized in that: A second spring (7) is sleeved on the outer side of the lower die inner core (8); the top end of the second spring (7) is connected to the bottom surface of the molding lower die (6); and the bottom end of the second spring (7) is connected to the bottom end of the lower die inner core (8).

5. A forging die for a motor magnetic angle according to claim 1, characterized in that: An upper die outer ring (3) is arranged on the outer side of the upper forming die (4).

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