TW202227253A - Forming mold - Google Patents

Abstract

A forming mold including a first mold core, a second mold core, a movable element and an elastic element is provided. The second mold core is arranged on one side of the first mold core and is opposite to the first mold core. The second mold core has an accommodation space, wherein the movable element is movably arranged in the accommodating space of the second mold core through a buffer distance of the accommodating space. The elastic element is arranged in the second mold core and abuts between the second mold core and the movable part.

Description

forming mold

The present invention relates to a mold, and in particular to a forming mold.

FIG. 1A is a three-dimensional schematic view of an iron piece being embedded in a molding die, and FIG. 1B is a cross-sectional view of FIG. 1A . Please refer to FIG. 1A and FIG. 1B at the same time. At present, the injection molding of iron parts is carried out by forming molds, and the following situations often occur due to dimensional tolerances. Therefore, there is no problem in embedding molding. 2. The dimensional tolerance between the iron piece 2 to be processed and the mold cores 1a and 1b is deviated from the lower limit, and the product is likely to have burrs after being embedded and formed. 3. The size between the iron piece 2 to be processed and the mold cores 1a and 1b is on the upper limit. When the mold is closed, it is easy to damage the mold cores 1a and 1b slightly due to the collision between the iron piece and the mold cores 1a and 1b. Continue to use the mold kernels 1a and 1b when the kernels 1a and 1b are damaged; if the mold kernels 1a and 1b continue to be used for a long time, the product will also have burrs.

Since it is difficult to achieve complete precision in the dimensions of the iron piece 2 to be processed and the mold cores 1a and 1b, burrs often occur in the product, so the yield cannot be effectively improved. Alternatively, in order to improve the yield of the product, the mold cores 1a and 1b need to be replaced frequently, resulting in an increase in the part cost of the forming mold.

In order to improve the above problems, a current improvement method is to provide a fixing member 3 in the coplanar area. The fixing member 3 is used to prevent the mold cores 1a and 1b from being directly pinched, which can reduce the cost of directly replacing the mold cores 1a and 1b. However, this still often results in products with slight burrs.

Products with slight burrs can be manually trimmed. However, this adds one more process and increases labor costs.

The present invention provides a molding die capable of improving product yield.

A forming mold of the present invention includes a first mold core, a second mold core, a movable part and an elastic part. The second mold core is arranged on one side of the first mold core and is opposite to the first mold core, wherein the second mold core has an accommodating space, and the accommodating space has a buffer distance. The movable piece is arranged in the accommodating space of the second mold core, and is movable in the accommodating space through the setting of the buffer distance. The elastic piece is arranged in the second mold core and abuts between the second mold core and the movable piece.

In an embodiment of the present invention, the first mold core has a first surface, the second mold core has a second surface, and the second surface faces the first surface. In addition, the movable member has a third surface, and the third surface faces the first surface.

In an embodiment of the present invention, when the forming mold is in the open state, the height of the third surface is higher than the height of the second surface, wherein the height of the third surface protruding from the second surface ranges from 0.05 mm to 0.2 mm mm.

In an embodiment of the present invention, when the molding die is in a closed state, the height of the third surface is flush with or slightly lower than the height of the second surface.

In an embodiment of the present invention, the above-mentioned second mold core has a limiting portion to limit the moving stroke of the movable member in the accommodating space.

Based on the above, the movable part of the molding die of the present invention is arranged in the accommodating space of the second mold core, wherein through the buffer distance and the arrangement of the elastic part, the movable part can move in the accommodating space to adapt to the first die core close or far away. Therefore, the mold core can be prevented from being hit by the iron, so that the mold core can maintain a good shape, thereby improving the yield of the product.

The descriptions about the orientations of up, down, left, right, front and rear in this specification are only for illustration according to the drawing method of the drawings, and are not intended to limit the present invention. Those of ordinary knowledge should know that when the reference point used for the description changes, the description of the orientation between the related components will also change accordingly.

Please refer to FIG. 2A and FIG. 2B at the same time. FIG. 2A is a three-dimensional schematic view of placing the workpiece to be processed into a molding die, and FIG. 2B is a cross-sectional view of FIG. 2A .

The molding die 10 of the present embodiment is used to perform injection molding on the workpiece 20 to be processed, wherein the workpiece 20 to be processed may be, for example, an iron piece, but not limited thereto.

The forming mold 10 includes a first mold core 11 , a second mold core 12 , a movable part 13 and an elastic part 14 .

The second mold core 12 is disposed on one side of the first mold core 11 , eg, the lower side, and the second mold core 12 is located on the first mold core 11 . The first mold core 11 and the second mold core 12 can be close to or away from each other to perform injection molding. In other embodiments, the second mold core 12 and the first mold core 11 can also be arranged side by side in the horizontal direction, which can be determined according to user needs.

The second mold core 12 in this embodiment has an accommodating space S, wherein the accommodating space S has a buffer distance L1.

The movable member 13 is arranged in the accommodating space S, and because the accommodating space S has a buffer distance L1, the movable member 13 is movably arranged in the accommodating space S.

The elastic element 14 is disposed in the second mold core 12 and abuts between the second mold core 12 and the movable element 13 . The elastic member 14 in this embodiment is a compression spring, which means that it will compress and store elastic restoring force after being stressed, but it is not limited thereto.

The above-mentioned first mold core 11 has a first surface 111 , the second mold core 12 has a second surface 121 , and the movable member 13 has a third surface 131 , wherein both the second surface 121 and the third surface 131 face the first surface 111 .

When the forming mold 10 is in the mold opening state, the first mold core 11 and the second mold core 12 are spaced apart from each other by a distance, wherein the distance between the first mold core 11 and the second mold core 12 is greater than the distance for picking and placing the finished product.

It is worth noting that the arrangement of the elastic member 14 causes the movable member 13 to be pushed against by the elastic member 14 so that a portion of the movable member 13 protrudes out of the second surface 121 of the second mold core 12 .

Specifically, the second mold core 12 has a limiting portion 122 and a bottom wall 123 , wherein the limiting portion 122 can be a top wall of the accommodating space S. The limiting portion 122 is used to interfere with the movable member 13 pushed by the elastic member 14 to limit the movement of the movable member 13 in the accommodating space S, thereby limiting the height of the third surface 131 protruding from the second surface 121 .

In other words, the moving stroke of the movable member 13 in the accommodating space S is limited by the buffer distance L1 of the accommodating space S.

Incidentally, the height of the third surface 131 of the movable member 13 is higher than the height of the second surface 121 . In this embodiment, the height of the third surface 131 protruding from the second surface 121 ranges from 0.05 mm to 0.2 mm.

FIG. 3A is a schematic diagram of the molding die in the mold-opening state. Referring to FIG. 3A , to perform injection molding on the workpiece 20 to be processed, the workpiece 20 to be processed is placed in the molding die 10 in an open state, and a portion of the workpiece 20 to be processed is located in the movable member 13 . At this time, the movable member 13 is pressed against the limiting portion 122 of the accommodating space S by the pressing of the elastic member 14 , and the third surface 131 of the movable member 13 protrudes from the second surface 121 of the second mold core 12 .

It should be noted that, since the accommodating space S has a buffer distance L1, the buffer distance L1 is the distance between the bottom surface 132 of the movable member 13 and the bottom wall 123 of the accommodating space S.

FIG. 3B is a schematic view of the molding die in a closed state. Please refer to FIG. 3A and FIG. 3B at the same time, in the step of forming the workpiece 20 to be processed, the first mold core 11 approaches the second mold core 12 to close the mold.

As the first mold core 11 gradually approaches the second mold core 12 , the first surface 111 of the first mold core 11 first contacts the third surface 131 of the movable member 13 , and the first mold core 11 presses the movable member 13 to move The element 13 moves downward in the accommodating space S, and the bottom surface 132 of the movable element 13 gradually approaches the bottom wall 123 of the accommodating space S. The elastic member 14 is compressed and deformed as the first mold core 11 presses the movable member 13 and stores elastic restoring force.

The first mold core 11 gradually approaches the second mold core 12 until the first surface 111 of the first mold core 11 contacts the second surface 121 of the second mold core 12 . At this time, the molding die 10 is in a closed state.

When the molding die 10 is in the mold-closed state, the height of the third surface 131 of the movable part 13 is flush or slightly lower than the height of the second surface 121 , and the bottom surface 132 of the movable part 13 is closer to the accommodating space than in the mold-opening state Bottom wall 123 of S.

The workpiece 20 to be processed is injection-molded in the mold-closed state of the molding die 10 .

In the molding die 10 of the present invention, since the movable part 13 moves down in the accommodating space S with the pressing of the first die core 11 , the collision between the workpiece 20 to be processed and the first die core 11 can be avoided. And damage the first mold core 11. In addition, it is also possible to prevent the workpiece 20 to be processed from being displaced due to the contact between the first mold core 11 and the workpiece to be processed 20 and then to collide with the second mold core 12 and damage the second mold core 12 . In other words, the damage of the mold core can be avoided and the service life of the mold core can be prolonged.

In addition, because the arrangement of the elastic member 14 enables the movable member 13 to move in the accommodating space S along with the movement of the first mold core 11 , the requirements for the dimensional accuracy of each component can also be reduced.

To sum up, in the forming mold of the present invention, a buffer distance is set in the accommodating space of the second mold core, and the use of the elastic member enables the movable member to move in the accommodating space and adapt to the first mold core close or far away. Therefore, the mold core can be prevented from being damaged due to collision with the workpiece to be processed, the mold core can be maintained in a good shape, the service life of the mold core can be prolonged, and the cost of parts loss can be reduced.

Furthermore, since the movable member moves in the accommodating space along with the movement of the first mold core, the requirement on the precision of the dimensions of each component can also be reduced.

In addition, maintaining the good condition of the mold core can further improve the yield of the product.

1a, 1b: mold kernel 2: Iron pieces to be processed 3: Fixing parts 10: Forming mold 11: The first mold 111: First surface 12: The second mold 121: Second Surface 20: Workpieces to be processed 122: Limiting part 123: Bottom Wall 13: Moving Pieces 131: Third Surface 132: Underside 14: elastic parts S: accommodation space L1: buffer distance

FIG. 1A is a three-dimensional schematic diagram of an iron piece embedded in a molding die. FIG. 1B is a cross-sectional view of FIG. 1A . FIG. 2A is a schematic perspective view of placing the workpiece to be processed into a forming mold. FIG. 2B is a cross-sectional view of FIG. 2A . FIG. 3A is a schematic diagram of the molding die in the mold-opening state. FIG. 3B is a schematic view of the molding die in a closed state.

10: Forming mold

11: The first mold

111: First surface

12: The second mold

121: Second Surface

122: Limiting part

123: Bottom Wall

13: Moving Pieces

131: Third Surface

132: Underside

14: elastic parts

20: Workpieces to be processed

S: accommodating space

L1: buffer distance

Claims (7)

A forming mold, comprising: a first mold; a second mold core, disposed on one side of the first mold core, and opposite to the first mold core, the second mold core has an accommodating space, and the accommodating space has a buffer distance; a movable piece, disposed in the accommodating space of the second mold core, and movable in the accommodating space through the setting of the buffer distance; and An elastic piece is arranged in the second mold core and abuts between the second mold core and the movable piece. The forming mold of claim 1, wherein the first mold core has a first surface, the second mold core has a second surface, and the second surface faces the first surface. The forming mold of claim 2, wherein the movable member has a third surface, and the third surface faces the first surface. The forming mold according to claim 3, wherein in a mold-opening state, the height of the third surface is higher than the height of the second surface. The forming mold of claim 4, wherein the height of the third surface protruding from the second surface ranges from 0.05 mm to 0.2 mm. The forming mold according to claim 3, wherein in a closed mold state, the height of the third surface is flush with or slightly lower than the height of the second surface. The forming mold according to claim 1, wherein the second mold core has a limiting portion for limiting the moving stroke of the movable member in the accommodating space.

Images