Die with protection mechanism

Abstract

The invention discloses a die with a protection mechanism. The die comprises a fixing base, a base installed on the fixing base, a punch panel installed on the base, an upper die insert installed on the punch panel and a male die, wherein one end of the male die sequentially penetrates through the base, the punch panel and the upper die insert, and the other end of the male die is fixed to the base. The device is characterized in that a pulling plate and a reset ejector rod for driving the pulling plate to move to play a protection role are arranged between the fixed seat and the base; one side of the pulling plate is further provided with an automatic reset assembly, and the other side of the pulling plate is connected with a travel switch. The pulling plate is pushed to move through the reset ejector rod, when the shape of the die is not matched with the shape of the silicon steel sheet, continuous punching on the silicon steel sheet is stopped, and therefore the die is protected, damage to the die is reduced, and the service life is prolonged; the pulling plate can be pushed to automatically reset through the automatic reset assembly when the mold is matched with the silicon steel sheet in shape, and therefore normal punching of the silicon steel sheet is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, and specifically refers to a mold with a protection mechanism. Background Art

[0002] The stator of a motor is generally formed by stacking silicon steel sheets. The silicon steel sheets need to use a stamping die to punch corresponding through holes on the silicon steel sheets. In the existing technology, when stamping the silicon steel sheets, after the punch punches the silicon steel sheets, the female die needs to rotate an angle to continue stamping. When the product shape is irregular, it is easy to have a situation where the rotation angle of the female die does not correspond to the structure of the punch, resulting in damage to the stamped silicon steel sheet products and the die, causing the scrapping of the silicon steel sheets and reducing the service life of the die. For this reason, a mold with a protection mechanism is proposed. Summary of the Invention

[0003] The purpose of the present invention is to propose a mold with a protection mechanism to solve the above problems.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A mold with a protection mechanism, including a fixed seat, a base installed on the fixed seat, a punch insert plate installed on the base, an upper die insert block installed on the punch insert plate, and a convex die with one end sequentially passing through the base, the punch insert plate, and the upper die insert block and the other end fixed on the base; the feature is that a draw plate and a reset ejector rod for driving the draw plate to move for protection are installed between the fixed seat and the base; an automatic reset component is also installed on one side of the draw plate, and a travel switch is connected to the other side.

[0005] Preferably, the automatic reset component includes a cross beam, a reset spring installed between the cross beam and the draw plate, and an adjusting nut installed on the cross beam to adjust the elastic force of the reset spring.

[0006] Preferably, the draw plate is also provided with an annular groove and a guiding inclined groove for facilitating the reset ejector rod to drive the draw plate to move.

[0007] Preferably, one end of the reset ejector rod sequentially passes through the draw plate, the base, the punch insert plate, and the upper die insert block and is higher than the height of the upper die insert block, and the other end is fixed inside the fixed seat.

[0008] Preferably, a first nut for fixing the reset top plate is also installed on the fixed seat; a first spring is between the first nut and the reset ejector rod.

[0009] Preferably, connecting screws connecting the base and the punch insert plate are also installed inside the fixed seat; a second spring and a limiting plate are also sleeved on the connecting screws; the second spring is fixed between the limiting plate and the fixed seat.

[0010] Preferably, a second nut for fixing the convex die is also installed on the base.

[0011] Preferably, a plurality of bosses are further provided on the base; and grooves adapted to the bosses are provided on the extraction plate.

[0012] Advantages of the present invention: When the mold does not match the shape of the silicon steel sheet, the extraction plate is pushed by the reset ejector rod to stop further stamping the silicon steel sheet, thereby protecting the mold, reducing damage to the mold, and delaying the service life; When the shape of the mold matches the shape of the silicon steel sheet, the extraction plate can be automatically reset by using the automatic reset component, thereby ensuring normal stamping of the silicon steel sheet; By using the travel switch to sense the travel of the extraction plate and sending a signal to the stamping machine in a timely manner, it is convenient for the stamping machine to stop or start working in a timely manner after receiving the signal, improving the convenience of stamping. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the present invention.

[0014] Figure 2 is a partial structural schematic diagram of the present invention.

[0015] Legend: 1, fixed seat; 101, first nut; 102, first spring; 103, connecting screw; 104, second spring; 105, limit plate; 2, base; 201, second nut; 202, boss; 3, punch insert; 4, upper die insert; 5, punch; 6, reset ejector rod; 7, automatic reset component; 701, cross beam; 702, reset spring; 703, adjusting nut; 8, travel switch; 9, extraction plate; 901, annular groove; 902, guiding inclined groove; 903, groove. Detailed Embodiments

[0016] Next, we will further describe a mold with a protection mechanism according to the present invention in conjunction with the drawings.

[0017] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the drawings. If the specific posture changes, the directional indications will also change accordingly.

[0018] Refer to the attached Figure 1-2As shown in the figure, a mold with a protection mechanism in this embodiment includes a fixed seat 1, a base 2 installed on the fixed seat 1, a punch panel 3 installed on the base 2, an upper die insert 4 installed on the punch panel 3, and a punch 5 with one end passing through the base 2, the punch panel 3, and the upper die insert 4 in sequence and the other end fixed on the base 2. It is characterized in that a draw plate 9 and a return ejector rod 6 for driving the movement of the draw plate 9 to play a protective role are installed between the fixed seat 1 and the base 2; an automatic reset component 7 is also installed on one side of the draw plate 9, and a travel switch 8 is connected to the other side; several bosses 202 are also provided on the base 2; a groove 903 adapted to the boss 202 is provided on the draw plate 9; when the mold does not match the shape of the silicon steel sheet by pushing the draw plate 9 to move through the return ejector rod 6, the stamping of the silicon steel sheet is stopped from continuing, thereby playing a protective role for the mold, reducing the damage to the mold, and delaying the service life; by using the automatic reset component 7, the draw plate 9 can be automatically reset when the mold matches the shape of the silicon steel sheet, thereby ensuring the normal stamping of the silicon steel sheet; by using the travel switch 8 to sense the travel of the draw plate 9 and sending a signal to the stamping machine in time, it is convenient for the stamping machine shell to stop or start working in time after receiving the signal, improving the convenience of stamping.

[0019] Refer to the appendix Figure 1-2 As shown in the figure, the automatic reset component 7 includes a cross beam 701, a return spring 702 installed between the cross beam 701 and the draw plate 9, and an adjusting nut 703 installed on the cross beam 701 to adjust the elasticity of the return spring 702; by rotating the adjusting nut 703 to adjust the elasticity of the return spring 702, it is ensured that the return spring 702 has enough force to drive the draw plate 9 to reset.

[0020] Refer to the appendix Figure 2 As shown in the figure, an annular groove 901 and a guiding inclined groove 902 for facilitating the return ejector rod 6 to drive the movement of the draw plate 9 are also provided on the draw plate 9; one end of the return ejector rod 6 passes through the draw plate 9, the base 2, the punch panel 3, and the upper die insert 4 in sequence and is higher than the height of the upper die insert 4, and the other end is fixed inside the fixed seat 1; by the return ejector rod 6 moving along the guiding inclined groove 902, the draw plate 9 is driven to move, and at the same time, the travel switch 8 connected in the annular groove 901 is used to sense the travel of the draw plate 9, so that it is convenient for the stamping machine shell to stop or start working in time after receiving the signal, improving the convenience of stamping.

[0021] Refer to the appendix Figure 2As shown, a first nut 101 for fixing the reset top plate is further installed on the fixed seat 1; a first spring 102 between the first nut 101 and the reset ejector rod 6; a connecting screw 103 connected to the base 2 and the punch insert 3 is further installed in the fixed seat 1; a second spring 104 and a limiting plate 105 are sleeved on the connecting screw 103; the second spring 104 is fixed between the limiting plate 105 and the fixed seat 1; a second nut 201 for fixing the punch 5 is further installed on the base 2; by using the second nut 201 to be screwed onto the base 2 to tighten the punch 5, the installation of the punch 5 is facilitated; by installing a connecting screw 103 connected to the base 2 and the punch insert 3 in the fixed seat 1 and fixing the second spring 104 between the limiting plate 105 and the fixed seat 1, the pulling force of the fixed seat 1 on the base 2 and the punch insert 3 is increased.

[0022] In the using process of the present invention, when the mold punches the silicon steel sheet, when the reset ejector rod 6 protruding from the upper die insert 4 contacts the plane on the lower die, the plane on the lower die applies a force to the reset ejector rod 6, causing the reset ejector rod 6 to move along the guiding inclined groove 902, compressing the first spring 102, and at the same time pushing the draw plate 9 towards the automatic reset assembly 7 to compress the reset spring 702, so that the groove 903 on the draw plate 9 is adapted to the boss 202 on the base 2. At the same time, the travel switch 8 senses the movement of the draw plate 9 and sends a signal to the punching machine, and the punching machine stops working; when the reset ejector rod 6 does not contact the plane on the lower die and corresponds to the positioning hole on the lower die, the reset spring 702 utilizes its own elasticity, and at the same time the first spring 102 at the reset ejector rod 6 assists the reset spring 702 to push the draw plate 9 to reset. The draw plate 9 pushes the reset ejector rod 6 to reset. When the travel switch 8 recognizes the position of the draw plate 9, it sends a signal to the punching machine, and the punching machine starts to work normally.

[0023] The above embodiments are illustrative of the present invention, not restrictive of the present invention. Any scheme obtained by simply transforming the present invention belongs to the protection scope of the present invention.

Claims

1. A mold with a protective mechanism, comprising a fixed seat (1), a base (2) mounted on the fixed seat (1), a punch panel (3) mounted on the base (2), an upper die insert (4) mounted on the punch panel (3), and a punch (5) having one end passing through the base (2), the punch panel (3) and the upper die insert (4) in sequence and the other end fixed to the base (2); wherein the punch (5) is characterized in that A draw plate (9) and a reset push rod (6) for driving the draw plate (9) to move for protection are installed between the fixed seat (1) and the base (2); an automatic reset component (7) is also installed on one side of the draw plate (9), and a travel switch (8) is connected to the other side.

2. A mold with a protective mechanism according to claim 1, characterized in that: The automatic reset assembly (7) comprises a crossbeam (701), a reset spring (702) installed between the crossbeam (701) and the draw plate (9), and an adjustment nut (703) installed on the crossbeam (701) for adjusting the elastic force of the reset spring (702).

3. A mold with a protective mechanism according to claim 2, characterized in that: The draw plate (9) is also provided with an annular groove (901) and a guide inclined groove (902) for facilitating the reset push rod (6) to drive the draw plate (9) to move.

4. A mold with a protective mechanism according to claim 3, characterized in that: One end of the reset ejector rod (6) passes through the draw plate (9), the base (2), the punch plate (3) and the upper die insert (4) in sequence and is higher than the height of the upper die insert (4), and the other end is fixed in the fixed seat (1).

5. A mold with a protective mechanism according to claim 4, characterized in that: The fixing seat (1) is also provided with a first nut (101) for fixing the reset top plate; and a first spring (102) between the first nut (101) and the reset top rod (6).

6. The mold with a protective mechanism according to claim 1, characterized in that: A connecting screw (103) connected to the base (2) and the punch panel (3) is also installed in the fixing seat (1); a second spring (104) and a limit plate (105) are also mounted on the connecting screw (103); the second spring (104) is fixed between the limit plate (105) and the fixing seat (1).

7. A mold with a protective mechanism according to claim 6, characterized in that: A second nut (201) for fixing the punch (5) is also mounted on the base (2).

8. The mold with a protection mechanism according to claim 1, characterized in that: The base (2) is also provided with a plurality of bosses (202); and the drawer plate (9) is provided with grooves (903) adapted to the bosses (202).

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