Motor punching sheet stamping die

Abstract

The utility model discloses a motor punching sheet stamping die, which belongs to the technical field of motor punching sheet production equipment and comprises a die body, a piston is fixedly connected to the lower end of the die body, an oil cylinder is sleeved outside the piston, a one-way valve is fixedly connected to the lower end of the oil cylinder, and the lower space of the oil cylinder is communicated with the one-way valve. The lower end of the one-way valve is fixedly connected with an oil bag, the lower space of the one-way valve is communicated with the oil bag, the lower portion of the one-way valve is fixedly connected with a support, and a spring is installed between the piston and the one-way valve. The support comprises a supporting column and a fixing seat, when the die body is impacted, the die body acts on the piston, the piston acts on oil in the oil cylinder, the one-way valve is used for intercepting the oil, and a very small amount of oil enters the oil bag, and when the die body loses acting force, the spring is used for driving the piston to reset upwards, and the oil is used for buffering the impact force of the die body. The possibility of accidental crushing is reduced; and meanwhile, the noise is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor punching sheet production equipment, and particularly relates to a punching die for motor punching sheets. Background Art

[0002] A motor punching sheet refers to a thin sheet material used for insulating positioning and insulating isolation in the circular or rectangular holes of the winding holes of the motor stator winding. It needs to be formed by stamping with a punching die.

[0003] During the process of motor punching sheets, due to the high impact force acting on the die, the die directly acts on the table, and the carbon content of the die is relatively high. Although the hardness is high, it is easy to break, resulting in a relatively high possibility that the conventional punching die for motor punching sheets will be accidentally broken.

[0004] Therefore, we propose a punching die for motor punching sheets to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problem that the conventional punching die for motor punching sheets is relatively likely to be accidentally broken, and to propose a punching die for motor punching sheets.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A punching die for motor punching sheets includes a die body. A piston is fixedly connected to the lower end of the die body. An oil cylinder is sleeved outside the piston. A check valve is fixedly connected to the lower end of the oil cylinder. The lower space of the oil cylinder communicates with the check valve. An oil bladder is fixedly connected to the lower end of the check valve. The lower space of the check valve communicates with the oil bladder. A support is fixedly connected to the lower part of the check valve. A spring is installed between the piston and the check valve. When the die body is impacted, through the die body acting on the piston, and through the piston acting on the oil in the oil cylinder, the check valve is used to intercept the oil, so that a very small amount of oil enters the oil bladder. When the acting force on the die body is lost, the spring is used to drive the piston to reset upward, and the oil is used to buffer the impact force of the die body, reducing the possibility of accidental breakage and reducing the noise at the same time.

[0008] Preferably, the support includes a pillar and a fixed seat. The pillars are uniformly fixedly connected to the upper end of the fixed seat. The check valve is conveniently supported through the pillars.

[0009] Preferably, the check valve includes a valve body, and a check plug is movably inserted into the interior of the valve body. When the oil acts on the check plug from the upper end, the check plug is used to prevent the oil from flowing downward; when the oil acts on the check plug from the bottom upward, the oil is used to push open the check plug, so as to accelerate the oil to flow back into the oil cylinder, facilitating one-way speed limiting of the oil.

[0010] Preferably, the one-way valve further includes a retaining rod fixedly connected to the upper part of the valve body. By using the retaining rod to block the upper part of the one-way plug, it is convenient to prevent the retaining rod from disengaging from the valve body upwards.

[0011] Preferably, the one-way plug includes a retaining disc and a slider, and the lower end of the retaining disc is fixedly connected to the upper end of the slider. When the retaining disc is lifted, it is convenient for oil to be discharged upwards into the oil cylinder through the gap between the slider and the valve body.

[0012] Preferably, through holes are formed in the retaining disc and the slider in a hollowed-out manner. When oil acts downward on the retaining disc, the oil slowly flows into the oil bladder through the through holes, thereby buffering while ensuring the support of the oil on the piston instantaneously during stamping, improving the buffering effect.

[0013] Preferably, an oil groove is formed on the outer part of the slider. When the one-way plug is lifted, the oil groove is used to increase the upward flow cross-section of the oil, improving the oil reset speed.

[0014] In summary, the technical effects and advantages of the present utility model are as follows:

[0015] 1. When the die body is impacted, it acts on the piston through the die body, and the piston acts on the oil in the oil cylinder. The one-way valve intercepts the oil, allowing a very small amount of oil to enter the oil bladder. When the die body loses the acting force, the spring drives the piston to reset upwards, and the oil buffers the impact force of the die body, reducing the possibility of accidental breakage and reducing noise at the same time.

[0016] 2. When oil acts on the one-way plug from the upper end, the one-way plug is used to block the downward flow of the oil; when the oil acts on the one-way plug from the bottom upwards, the oil flushes open the one-way plug, thereby accelerating the oil to flow back into the oil cylinder, facilitating one-way speed-limiting of the oil.

[0017] 3. When oil acts downward on the retaining disc, the oil slowly flows into the oil bladder through the through holes, thereby buffering while ensuring the support of the oil on the piston instantaneously during stamping, improving the buffering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the support structure of the present utility model;

[0020] Figure 3 is a schematic diagram of the one-way valve structure of the present utility model;

[0021] Figure 4 is a schematic diagram of the one-way plug structure of the present utility model.

[0022] In the figure: 1, die body; 2, support; 3, one-way valve; 4, one-way plug; 5, oil cylinder; 6, piston; 7, oil bladder; 8, spring; 21, support column; 22, fixed seat; 31, valve body; 41, retaining disc; 42, through hole; 43, slider; 44, oil groove; 45, retaining rod. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments.

[0024] Refer to Figure 1 and 3 , a stamping die for motor punching sheets, including a die body 1, a piston 6 is fixedly connected to the lower end of the die body 1, an oil cylinder 5 is sleeved outside the piston 6, a one-way valve 3 is fixedly connected to the lower end of the oil cylinder 5, the lower space of the oil cylinder 5 communicates with the one-way valve 3, an oil bladder 7 is fixedly connected to the lower end of the one-way valve 3, the lower space of the one-way valve 3 communicates with the oil bladder 7, a support 2 is fixedly connected to the lower part of the one-way valve 3, and a spring 8 is installed between the piston 6 and the one-way valve 3.

[0025] Refer to Figure 1 and 2 , the support 2 includes a support column 21 and a fixed seat 22, and the support columns 21 are uniformly fixedly connected to the upper end of the fixed seat 22. The support columns 21 are used to support the one-way valve 3.

[0026] Refer to Figure 1 and 3 , the one-way valve 3 includes a valve body 31, the upper end of the spring 8 is fixedly connected to the piston 6, the lower end of the spring 8 is fixedly connected to the upper end of the valve body 31, the upper end of the oil bladder 7 is fixedly connected to the lower end of the valve body 31, the lower end of the oil cylinder 5 is fixedly connected to the upper end of the valve body 31, and a one-way plug 4 is movably inserted into the valve body 31. When the oil acts on the one-way plug 4 from the upper end, the one-way plug 4 is used to prevent the oil from flowing downward; when the oil acts on the one-way plug 4 from the lower end upward, the oil flushes open the one-way plug 4, so as to accelerate the oil to flow back into the oil cylinder 5.

[0027] Refer to Figure 1 and 3 , the one-way valve 3 further includes a retaining rod 45, and the retaining rod 45 is fixedly connected to the upper part of the valve body 31. The retaining rod 45 is used to block the upper part of the one-way plug 4 to prevent the retaining rod 45 from disengaging from the valve body 31 upward.

[0028] Refer to Figure 1 , 3and 4, the one-way plug 4 includes a retaining disc 41 and a slider 43. The slider 43 slides through the valve body 31. The lower end of the retaining disc 41 is in movable contact with the valve body 31, and the lower end of the retaining disc 41 is fixedly connected to the upper end of the slider 43. When the retaining disc 41 is lifted, oil is discharged upward into the oil cylinder 5 through the gap between the slider 43 and the valve body 31.

[0029] Refer to Figure 1 and 4 , through holes 42 are formed in the retaining disc 41 and the slider 43 in a hollowed-out manner. When oil acts downward on the retaining disc 41, the oil slowly flows into the oil bladder 7 through the through holes 42, so as to buffer while ensuring the support of the oil to the piston 6 during stamping.

[0030] Refer to Figure 3 and 4 , an oil groove 44 is formed on the outer part of the slider 43. When the one-way plug 4 is lifted, the oil groove 44 is used to increase the cross-section of the upward oil flow.

[0031] Working principle: When the die body 1 is impacted, it acts on the piston 6 through the die body 1, acts on the oil in the oil cylinder 5 through the piston 6, uses the one-way valve 3 to intercept the oil, and makes a very small amount of oil enter the oil bladder 7. When the die body 1 loses the acting force, the spring 8 drives the piston 6 to reset upward, and the impact force of the die body 1 is buffered by the oil.

[0032] As described above, it is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model, according to the technical solution of the utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the utility model.

[0033] In the description, the application direction of the prior art that is known to those skilled in the art and has not been changed is simply mentioned for the utility model, and it is combined with the utility model to form a complete technology; the overly popularized technology well-known to those skilled in the art is avoided to assist those skilled in the art to quickly understand the main content of the utility model.

Claims

1. A stamping die for electric motor punching sheets, comprising a die body (1), characterized in that: The lower end of the mold body (1) is fixedly connected to a piston (6), the outer portion of the piston (6) is covered with an oil cylinder (5), the lower end of the oil cylinder (5) is fixedly connected to a one-way valve (3), the lower space of the oil cylinder (5) is in communication with the one-way valve (3), the lower end of the one-way valve (3) is fixedly connected to an oil bag (7), the lower space of the one-way valve (3) is in communication with the oil bag (7), the lower portion of the one-way valve (3) is fixedly connected to a support (2), and a spring (8) is installed between the piston (6) and the one-way valve (3).

2. The electric motor punching die according to claim 1, characterized in that: The support (2) comprises a support column (21) and a fixing seat (22), wherein the support column (21) is evenly fixedly connected to the upper end of the fixing seat (22).

3. The electric motor punching die according to claim 1, characterized in that: The one-way valve (3) comprises a valve body (31), and a one-way plug (4) is movably inserted into the interior of the valve body (31).

4. The electric motor punching die according to claim 3, characterized in that: The one-way valve (3) further comprises a blocking rod (45), wherein the blocking rod (45) is fixedly connected to the upper part of the valve body (31).

5. The electric motor punching die according to claim 3, characterized in that: The one-way plug (4) comprises a baffle (41) and a slider (43), and the lower end of the baffle (41) is fixedly connected to the upper end of the slider (43).

6. The electric motor punching die according to claim 5, characterized in that: The baffle plate (41) and the sliding block (43) are hollowed out to form a through hole (42).

7. The electric motor punching die according to claim 5, characterized in that: An oil groove (44) is provided outside the sliding block (43).

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