TWI615256B - Pressing mold - Google Patents

Abstract

A stamping die is used to solve the problems of inconvenient demoulding and complicated process of the existing stamping die. The stamping die comprises a first mold core, the first mold core comprises a sleeve and a plurality of sliders, the sleeve has an inner circumferential surface, and the inner diameter of the sleeve is tapered along a feeding direction. Each of the sliders abuts the inner peripheral surface, and each of the sliders has a wall surface away from one side of the inner peripheral surface, and each of the sliders abuts an elastic member on one side of the feeding direction; a second mold, the second mold is respectively a first surface and a second surface on the two sides of the feeding direction, the first surface abutting each of the elastic members, and the first surface is provided with a die hole The die hole faces the plurality of sliders, and the second surface is provided with an opening that communicates with the die hole.

Description

Stamping die

The present invention relates to a stamping die, and more particularly to a stamping die capable of pneumatically releasing a die.

Stamping forming is a widely used metal processing method, mainly through cutting, bending or compressing one metal material through a punching device, and then processing the material into the finished product of the stamping device. Shape and size.

However, when the existing stamping die is to be taken out of the finished product, since the stamping die is coated on the outer periphery of the finished product, the stamping die has a large contact area with the processed product, and the finished product must be applied by using the ejector pin. The large thrust can push the finished product out of the stamping die to complete the demolding. Accordingly, the existing stamping die has a problem of inconvenience in demolding.

Moreover, the finished product cannot have a pointed configuration, which would otherwise cause the above-mentioned ejection pin to fail to apply sufficient thrust to the processed product to push the processed product out of the stamping die. According to this, if the manufacturer wants to produce a product with a pointed structure such as a nail, it is only possible to produce a semi-finished product having a prototype shape by using an existing stamping die, and then perform subsequent processing through a process such as turning and grinding to form a product having a tip structure, resulting in a product having a tip structure. The existing processes of stamping nails and the like are complicated, making the overall process time lengthy and the manufacturing cost difficult to effectively reduce.

In view of the above, there is a need to provide a further improved stamping die to solve the problem of the inconvenience of the existing stamping die, and to reduce the process complexity when manufacturing a product having a tip structure by a stamping die.

In order to solve the above problems, the present invention provides a punching apparatus which can blow out a finished product by introducing a pressurized gas to complete demolding.

In order to achieve the foregoing object, the technical means used in the present invention include: a stamping die comprising: a first mold core, the first mold core comprising a sleeve and a plurality of sliders, the sleeve having an inner circumference And the inner diameter of the sleeve is tapered along a feeding direction, and each of the sliders abuts the inner circumferential surface, and each of the sliders has a wall surface away from one side of the inner circumferential surface, and each of the sliding surfaces And a second mold core, the second mold core is respectively a first surface and a second surface on the two sides of the feeding direction, wherein the second mold core is a first surface and a second surface a surface of the first surface opposite to each of the sliders is provided with a groove, the first surface abuts the elastic members, the elastic member is received in the groove, and the first surface is provided with a die hole, the die The hole faces the plurality of sliders, and the second surface is provided with an opening that communicates with the die hole; wherein the plurality of sliders are movable along an inner circumferential surface of the sleeve, and the plurality of slider edges In a state in which the feeding direction moves and abuts against the first surface, the wall surfaces of the sliders abut each other to form a common Cavity, the cavity in communication with the die orifice.

Wherein the die hole is a tapered space having a tip. Thereby, the material can be formed into the finished product having the tip configuration in the cavity and the die hole.

Wherein the sleeve has a first minimum inner diameter adjacent to one side of the second mold core in the feeding direction, and a second minimum inner diameter away from the other side of the second mold core in the feeding direction. The second minimum inner diameter is greater than the first minimum inner diameter, whereby the inner peripheral surface forms a tapered surface.

The outer surface of each of the sliders is a curved surface, and the inner circumferential surface is a conical surface which is tapered along the feeding direction, so that the plurality of sliders can move along the inner circumferential surface.

The outer surface of each of the sliders is a slope inclined with respect to the feeding direction, and the inner circumferential surface is a polygonal pyramid surface which is tapered along the feeding direction, so that the plurality of sliders can along the inner circumferential surface mobile.

An auxiliary elastic member is disposed between the two adjacent sliders, and the auxiliary elastic members respectively abut the two adjacent sliders. Thereby, the auxiliary elastic member can be compressed when the plurality of sliders move along the feeding direction, and provide a restoring force when the plurality of sliders move in a direction opposite to the feeding direction to assist in expanding the The distance between two adjacent sliders, thereby ensuring that the two adjacent sliders can be detached from the finished product.

A surface of one of the sliders opposite to the other of the sliders is provided with a recess, and the auxiliary elastic member is received in the recess. Thereby, the groove can limit the auxiliary elastic member, and the auxiliary elastic member is provided with a receiving space, so that the auxiliary elastic member can be completely accommodated in the groove after being pressed, thereby ensuring the wall surface of each of the sliding blocks. They can abut each other to improve the adhesion of the cavity.

The first mold core and the second mold core are disposed together inside the body. Thereby, the seat body can limit the first mold core and the second mold core to improve the stability of the stamping die of the embodiment during the press forming operation.

The outer surface of the plurality of sliders is provided with a shoulder portion, and the base body is provided with a pressure ring. The pressure ring system abuts the shoulder along the feeding direction in a state where the plurality of sliders are not pressed by an external force. unit. Thereby, the pressure ring can effectively limit the stroke of the plurality of sliders in the opposite direction to the feeding direction.

With the above structure, the stamping die of the present invention is provided with a plurality of sliders movable along the inner circumferential surface of the sleeve in the first mold core, and the mold member is in the cavity of the first mold core and the first After forming the finished product in the die hole of the two mold core, the processed product can be blown out only by introducing a pressurized gas into the opening of the second mold core, which has the effect of improving the convenience of demoulding. Furthermore, the stamping die of the present invention blows the finished product with pressurized gas without relying on the solid ejection pin to apply a thrust to the processed product, so that the material can be formed in the cavity and the die hole to have The finished product of the tip construction has the effect of reducing the complexity of the process when manufacturing a product with a tip structure in a stamping die.

1‧‧‧The first model

11‧‧‧Sleeve

111‧‧‧ inner circumference

12‧‧‧ Slider

121‧‧‧ wall

122‧‧‧Flexible parts

123‧‧‧ cavity

124‧‧‧ Groove

125‧‧‧Auxiliary elastic parts

126‧‧‧ Groove

127‧‧‧ shoulder

2‧‧‧Second mold

21‧‧‧ first surface

22‧‧‧ second surface

23‧‧‧Mold hole

231‧‧‧ tip

24‧‧‧ openings

25‧‧‧ Groove

3‧‧‧ body

31‧‧‧ Pressure ring

X‧‧‧feeding direction

D1‧‧‧first minimum inner diameter

D2‧‧‧ second smallest inner diameter

W‧‧‧Materials

P‧‧‧Processed products

P1‧‧‧ tip structure

Fig. 1 is a schematic exploded view showing an embodiment of the present invention.

Figure 2 is a schematic cross-sectional view showing an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view showing a plurality of sliders according to an embodiment of the present invention when pressed.

Fig. 4 is a schematic cross-sectional view showing a process of forming a finished product according to an embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view showing a state in which demolding is performed in an embodiment of the present invention.

The above and other objects, features and advantages of the present invention will become more <RTIgt; A stamping die according to an embodiment of the present invention comprises a first die 1 and a second die 2. The second mold core 2 is disposed on one side of the first mold core 1 in a feeding direction X.

The first mold core 1 includes a sleeve 11 and a plurality of sliders 12, the sleeve 11 has an inner circumferential surface 111, and the inner diameter of the sleeve 11 is tapered along the feeding direction X, so that the inner portion The circumferential surface 111 forms a tapered surface; in other words, the sleeve 11 has a first minimum inner diameter D1 adjacent to one side of the second mold core 2 in the feeding direction X, and is away from the feeding direction X. The other side of the second mold core 2 has a second minimum inner diameter D2 which is greater than the first minimum inner diameter D1. The plurality of sliders 12 are arranged along the inner peripheral surface 111, and each of the sliders 12 abuts against the inner peripheral surface 111. Each of the sliders 12 has a wall surface 121 away from one side of the inner circumferential surface 111, and each of the sliders 12 abuts an elastic member 122 on one side of the feeding direction X. The elastic member 122 is a structure that can generate a restoring force after being pressed and deformed by a spring or the like.

A first surface 21 and a second surface 22 are respectively disposed on the two sides of the second mold core 2 in the feeding direction X. The first surface 21 can respectively abut the sleeve 11 and each of the elastic members 122. The second mold core 2 can be disposed on one side of the first mold core 1 in the feed direction X. The second mold core 2 is provided with a die hole 23 on the first surface 21, and the die hole 23 faces the plurality of sliders 12. The second surface 22 is provided with an opening 24 that communicates with the die hole 23.

The plurality of sliders 12 are movable along the inner circumferential surface 111 of the sleeve 11, wherein the inner circumferential surface 111 is a tapered surface that is tapered along the feeding direction X, when the plurality of sliders 12 are along When the feeding direction X moves, the distance between the sliders 12 will be reduced; otherwise, when the plurality of sliders 12 move in the opposite direction to the feeding direction X, between the sliders 12 The distance will be expanded. Accordingly, referring to FIG. 3, in the embodiment, when the plurality of sliders 12 move along the feeding direction X and abut against the first surface 21 of the second mold core 2, each of the sliders The distance between the blocks 12 will be minimized, so that the wall faces 121 of the sliders 12 abut each other, so that the wall faces 121 of the sliders 12 collectively form a cavity 123, and the cavity 123 is formed in the number The slider 12 is centrally located, and the cavity 123 communicates with the die hole 23 of the second die 2.

With the above structure, when the stamping die of the embodiment of the present invention is actually used, a material member W is moved along the feeding direction X to the first mold core 1, and the material member W can press the plurality of sliders 12 to The elastic member 122 is compressed to move the plurality of sliders 12 along the feeding direction X and abut against the first surface 21 of the second mold core 2 to form the cavity 123. Referring to FIG. 4, the material W is pressed into the cavity 123 by pressing the material W, and the cavity 123 communicates with the die hole 23 of the second mold 2. Therefore, the material is The workpiece W can be formed into a finished product P in the cavity 123 of the cavity 123 and the second die 2.

Referring to FIG. 5, when the demolding is to be performed, only the plurality of sliders 12 need to be stopped, and the restoring force of the elastic members 122 can drive the plurality of sliders 12 to be opposite to the feeding direction X. The direction of movement increases the distance between the sliders 12 such that the wall surface 121 of each of the sliders 12 is completely or partially separated from the processed product P, and the pressurized gas is introduced through the opening 24 of the second mold core 2. The processed product P can be blown out of the stamping die of this embodiment by gas pressure.

Therefore, the stamping die of the embodiment of the present invention is provided with a plurality of sliders 12 that are movable along the inner circumferential surface 111 of the sleeve 11 in the first mold core 1, and the plurality of sliders 12 are pressed. Being able to be close to each other to form the cavity 123 such that the material W can be in the cavity 123 and the The die hole 23 of the second mold core 2 is press-formed; on the other hand, by stopping pressing the plurality of sliders 12, the plurality of sliders 12 can be separated from each other to reduce the first mold core 1 and processing The contact area of the finished product P, according to which the processed product P can be blown out only by introducing the pressurized gas into the opening 24 of the second mold core 2, thereby completing the demolding. Compared with the foregoing existing stamping die and the finished product, the contact area has a large contact area, so that the solid ejector pin must be used to apply a large thrust to the finished product, so that the processed product can be ejected, and the stamping of the embodiment of the present invention The mold has the effect of improving the convenience of demolding.

Furthermore, in the present embodiment, the processed product P is blown out by the pressurized gas, and the die hole 23 of the second mold core 2 can be The tapered space having the tip portion 231 enables the material member W to be formed into the molded product P having the tip end configuration P1 in the cavity 123 and the die hole 23. In other words, the processed product P does not need to be subjected to subsequent processing by turning, grinding, or the like to form a tip structure, which has the effect of reducing the process complexity when manufacturing a product having a tip structure by a stamping die.

Based on the above technical concept, the following describes various features of the stamping die of the embodiment of the present invention and explains one by one: in the embodiment, the number of the plurality of sliders 12 is three, and the shape and size of each of the sliders 12 The number of the plurality of sliders 12 may be two, four, five, etc., and the shape and size of each of the sliders 12 may be different. The invention is not limited.

The inner circumferential surface 111 of the sleeve 11 of the first mold core 1 is a tapered surface which is tapered along the feeding direction X, and the inner circumferential surface 111 is designed to match the outer surface of the plurality of sliders 12, so that The plurality of sliders 12 are movable along the inner peripheral surface 111. For example, in this embodiment, the outer surface of each of the sliders 12 is a curved surface, so the inner circumferential surface 111 can be a conical surface; however, in some embodiments of the present invention, each of the sliders The outer surface of 12 may be a flat surface (for example, a slope inclined with respect to the feeding direction X), so the inner circumferential surface 111 may also be a polygonal pyramid surface.

The surface of each of the sliders 12 opposite to the first surface 21 of the second mold core 2 may be provided with a recess 124, and the elastic member 122 is received in the recess 124; or the first surface 21 may be provided. There are a plurality of grooves 25, each of which is housed in each of the grooves 25. Thereby, each of the sliders 12 or the grooves 124 and 25 of the first surface 21 can limit the elastic member 122 and provide a space for the elastic member 122 to be accommodated, so that the elastic member 122 can be fully compressed after being pressed. The grooves 124 and 25 are inserted into the first surface 21 to enhance the adhesion between the cavity 123 and the die hole 23.

In addition, as shown in the figures 1, 3 and 5, an auxiliary elastic member 125 may be disposed between the two adjacent sliders 12, and the auxiliary elastic member 125 is also a spring or the like capable of generating a restoring force after being pressed and deformed. structure. The auxiliary elastic members 125 can respectively abut the two adjacent sliders 12, whereby the auxiliary elastic members 125 can be subjected to the two adjacent sliders when the plurality of sliders 12 move along the feeding direction X. 12 compresses and compresses, and provides a restoring force when the plurality of sliders 12 move in a direction opposite to the feeding direction X to assist in expanding the distance between the two adjacent sliders 12, thereby ensuring the two Adjacent sliders 12 can be detached from the finished product P.

Similarly, in the two adjacent sliders 12, a surface of the slider 12 opposite to the other slider 12 may be provided with a recess 126, and the auxiliary elastic member 125 is received in the recess 126. Thereby, the recess 126 can limit the auxiliary elastic member 125, and provide the auxiliary elastic member 125 with a receiving space, so that the auxiliary elastic member 125 can be completely accommodated in the recess 126 after being pressed, thereby ensuring each The wall faces 121 of the slider 12 can abut each other to enhance the adhesion of the cavity 12.

Referring to FIGS. 1 and 2 again, in the present embodiment, the first mold core 1 and the second mold core 2 may be disposed together inside the body 3. Thereby, the seat body 3 can limit the first mold core 1 and the second mold core 2 to improve the stability of the stamping die of the embodiment in the press forming operation. The outer surface of the plurality of sliders 12 may be provided with a shoulder portion 127. The base body 3 may be provided with a pressure ring 31. When the plurality of sliders 12 are not pressed by an external force, the pressure ring is The 31 series abuts the shoulder portion 127 along the feed direction X, whereby the pressure ring 31 can effectively limit the stroke of the plurality of sliders 12 in a direction opposite to the feed direction X.

In summary, the stamping die of the embodiment of the present invention provides a plurality of sliders 12 movable along the inner circumferential surface 111 of the sleeve 11 by the first mold core 1 when the material member W is in the first After the mold hole 123 of the mold core 1 and the mold hole 23 of the second mold core 2 are formed into the finished product P, the plurality of sliders 12 can be separated from each other by stopping the pressing of the plurality of sliders 12, thereby reducing The contact area between the first mold core 1 and the processed product P, according to which the raw material P can be blown out only by introducing the pressurized gas into the opening 24 of the second mold core 2, which has the convenience of improving the mold release. The effect.

Furthermore, in the present embodiment, the processed product P is blown out by using a pressurized gas, and the mold hole 23 of the second mold core 2 can be presented without relying on the solid ejector pin to apply a thrust to the processed product P. The tapered space having the tip portion 231 enables the material member W to be formed into the molded product P having the tip end configuration P1 in the cavity 123 and the die hole 23, and does have a reduction in manufacturing a product having a tip structure by a stamping die. Process complexity.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

1‧‧‧The first model

11‧‧‧Sleeve

111‧‧‧ inner circumference

12‧‧‧ Slider

121‧‧‧ wall

122‧‧‧Flexible parts

124‧‧‧ Groove

125‧‧‧Auxiliary elastic parts

126‧‧‧ Groove

127‧‧‧ shoulder

2‧‧‧Second mold

21‧‧‧ first surface

22‧‧‧ second surface

23‧‧‧Mold hole

231‧‧‧ tip

24‧‧‧ openings

25‧‧‧ Groove

3‧‧‧ body

31‧‧‧ Pressure ring

X‧‧‧feeding direction

Claims (9)

A stamping die comprising: a first mold core, the first mold core comprises a sleeve and a plurality of sliders, the sleeve has an inner circumferential surface, and an inner diameter of the sleeve is gradually formed along a feeding direction Each of the sliders abuts the inner peripheral surface, each of the sliders has a wall surface away from one side of the inner peripheral surface, and each of the sliders abuts an elastic member on one side of the feeding direction; And a second mold core, the second mold body is respectively a first surface and a second surface on the two sides of the feeding direction, and a surface of the first surface opposite to each of the sliders is provided with a groove. The first surface abuts the elastic members, and the elastic member is received in the recess, the first surface is provided with a die hole, the die hole faces the plurality of sliders, and the second surface is provided with an opening. The opening communicates with the die hole; wherein the plurality of sliders are movable along an inner circumferential surface of the sleeve, and in a state in which the plurality of sliders move along the feeding direction and abut the first surface, The wall surfaces of the sliders abut each other to collectively form a cavity that communicates with the die hole. The stamping die of claim 1, wherein the die hole is a tapered space having a tip. The stamping die according to claim 1, wherein the sleeve has a first minimum inner diameter adjacent to one side of the second mold in the feeding direction, and is away from the second in the feeding direction. The other side of the mold core has a second smallest inner diameter that is greater than the first minimum inner diameter. The stamping die according to claim 1, wherein the outer surface of each of the sliders is a curved surface, and the inner circumferential surface is a conical surface which is tapered along the feeding direction. The stamping die according to claim 1, wherein the outer surface of each of the sliders is a slope inclined with respect to the feeding direction, and the inner circumferential surface is a polygonal tapered surface which is tapered along the feeding direction. The stamping die according to claim 1, wherein one of the adjacent sliders is provided The auxiliary elastic members respectively abut the two adjacent sliders. The stamping die according to claim 6, wherein a surface of the slider opposite to the other slider is provided with a groove, and the auxiliary elastic member is received in the groove. The stamping die of claim 1, 2, 3, 4, 5, 6 or 7 wherein the first mold core and the second mold core are disposed together inside the body. The stamping die of claim 8, wherein the outer surface of the plurality of sliders is provided with a shoulder portion, and the base body is provided with a pressure ring, wherein the plurality of sliders are not pressed by external force, The pressure ring abuts the shoulder along the feed direction.