TWI490106B - Fixing device for injection mold - Google Patents

Description

Injection mold fixing device

The present invention relates to an injection mold fixing device, and more particularly to an injection mold fixing device for fixing an embedded component.

Injection molding is a technique for component manufacturing, especially in a recent general way of mass production. As a general product, whether it is a consumer electronic product, a computer or a daily product, as long as it is a plastic or polymer material, it can be manufactured by injection molding. In the injection molding die, the material is mainly injected into a cavity through the flow path, so that the fluid material can fill the cavity and then be formed by cooling.

At present, it is necessary to provide a suitable fixing jig in the inside of the mold for embedding the embedded embedding element, so that the embedded element can be stably fixed in the mold. However, the conventional method of fixing the embedded components is because the clamps are all in a fixed form. When the plastic material is injection molded, the fixture for fixing the embedded components may cause a corresponding gap on the finished product (such as the casing). In addition, other parts are used to cover, resulting in an increase in cost.

The invention provides an injection mold fixing device, which can make the injection molded product not have a gap, and can be directly used without using other parts to cover, which not only saves cost, but also makes the finished product design more flexible.

The present invention provides an injection mold fixing device, the mold includes a first mold and a second mold, and a mold cavity is disposed between the first mold and the second mold, and the first mold and the second mold are disposed between a locking mechanism is configured to fix the first mold and the second mold. The mold is provided with a plurality of sliding slots. The fixing device comprises: a plurality of clamps, wherein the clamps are movably disposed in the sliding slots, The clamps are located at the outer edge of the cavity, and the clamps each have a top abutting portion; and a plurality of elastic members respectively abut against the clamps to elastically extend the top abutting portions of the clamps Inside the cavity.

The present invention further provides an injection mold fixing device, the mold comprising a first mold and a second mold, a mold cavity between the first mold and the second mold, between the first mold and the second mold The fixing device comprises: a plurality of clamps, wherein the clamps are respectively movably disposed in the mold by pivoting, the clamps are located at an outer edge of the mold cavity, and the clamps each have a top abutment And a plurality of elastic members respectively abutting against the clamps, so that the top abutting portions of the clamps elastically protrude into the cavity.

The present invention has the following beneficial effects: the present invention mainly provides a fixture for fixing the injection molded embedded component, and further provides an elastic member at one end of the clamp so that the clamp can be elastically moved. When the liquid plastic is injected, the fixture of the fixing device can be pushed out by the injection pressure, and the liquid plastic can fill a gap occupied by the original fixture to form a complete injection component, so that the finished product can be completely flat.

Wherein the invention utilizes the relationship between the stress and the proportional relationship within the elastic limit, and presets the amount of movement of the clamps to the outward direction, and with the known injection pressure, the elasticity corresponding to the required elastic coefficient can be selected. element.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.

[First Embodiment]

Referring to FIG. 1 to FIG. 5, the present invention provides an injection mold fixing device. The mold includes a first mold 1 and a second mold 2. The first mold 1 and the second mold 2 can be disposed opposite to each other. The upper mold and the lower mold of the injection mold are separately formed. There is a cavity 11 between the first die 1 and the second die 2, and the plastic material can be injected into the cavity 11 through the injection port 12 and the flow channel 13 by using an injection machine (not shown), so that the fluid material can be The cavity 11 is filled and then cooled to form a finished product.

In the present embodiment, a latching mechanism 3 is further disposed between the first die 1 and the second die 2, and the latching mechanism 3 includes a plurality of fixing posts 31 and a plurality of swinging bars 32. The fixing posts 31 are fixed to the second. The upper end of the fixing rod 31 protrudes from the top surface of the second mold 2, and a first hook portion 311 is respectively disposed. The upper ends of the swinging rods 32 are respectively disposed on the first molds 1 . The swinging rods 32 are located above the fixed columns 31 . The second ends of the swinging rods 32 are respectively formed with a second hook portion 321 . When the first die 1 and the second die 2 are closed, the second hook portion 321 of the swinging levers 32 is driven by the first driving portion (not shown) to be hooked to the first hook portions 311 of the fixing posts 31. The first die 1 and the second die 2 are relatively closedly locked so as to be molded out of the cavity 11 by the injection machine. The above-described latching mechanism 3 is not the focus of the present invention, and its type and configuration are not limited.

The invention mainly provides a fixing device in the injection mold, the fixing device comprises a plurality of clamps 4 and a plurality of elastic members 5, and the number of the clamps 4 is not limited, and preferably three clamps 4 are provided, and the clamps 4 are provided. Removably disposed in the mold, the clamps 4 are located at the outer edge of the cavity 11. In the embodiment, the clamps 4 are disposed on the fixing posts 31, that is, each of the fixing posts 31 is provided with a sliding slot 312, and the sliding slot 312 can extend in a horizontal direction. Of course, the chute 312 is not limited to be disposed on the fixed post 31, and may be disposed at other suitable positions in the mold. The clamps 4 are movably disposed in the sliding slots 312 of the fixing posts 31 such that the clamps 4 can move in the horizontal direction.

In the present embodiment, the jig 4 is in the form of a sheet, but the shape and configuration of the jig 4 are not limited and may be appropriately changed as needed. The clamps 4 each have a top abutting portion 41, and the abutting portion 41 is located at one end of the clamp 4 adjacent to the cavity 11, and can be used to abut against a buried member (such as a panel or the like) 6 placed in the mold. The one end of the abutting portion 41 may also be formed with a sloped surface 411 so that the top abutting portion 41 can be stably abutted against the edge of the embedded member 6.

The elastic members 5 are disposed at one end of the clamps 4, that is, the elastic members 5 are disposed at one end of the clamps 4 away from the cavity 11. The elastic member 5 can be an elastic member such as a spring, and the type thereof Construction is not limited. The elastic members 5 are respectively abutted against the clamps 4, and the force of the clamps 4 to move toward the cavity 11 can be applied to elastically extend the top abutment portions 41 of the clamps 4 into the cavity 11. When the embedding member 6 is placed in the cavity 11 of the mold, the top abutting portion 41 of the jigs 4 can be abutted and fixed in the cavity 11. In the embodiment, the embedding member 6 is a square piece. The top abutting portions 41 of the jigs 4 are flanked by the three side edges of the embedding member 6.

[Second embodiment]

In addition, referring to FIG. 6 , the clamp 4 can be provided with a suitable positioning portion 42 . The positioning portion 42 protrudes from the edge of the clamp 4 , and the positioning portion 42 can be provided with one or two or the like, and can be disposed in the sliding slot 312 of the mold. There is a corresponding positioning groove 313, and the length of the positioning groove 313 is larger than the length of the positioning portion 42, so that the positioning portion 42 can move in the horizontal direction in the positioning groove 313. When the clamp 4 moves in the horizontal direction in the sliding slot 312, the positioning portion 42 also moves in the positioning slot 313, so that the positioning portion 42 can be used to abut against the two ends of the positioning slot 313 to stop the positioning, thereby controlling the movement of the clamp 4. The stroke allows the distance between the clamps 4 to advance or retreat to be appropriately controlled.

[Third embodiment]

In addition, referring to FIG. 7 , in the embodiment, the ends of the clamps 4 are respectively pivoted in the mold by a rotating shaft 43 , that is, the clamps 4 can be pivoted on the fixed post 31 of the mold or other positions in the mold. The jigs 4 are allowed to move the shaft 43 in an axial direction. The clamps 4 each have a top abutment 41 which is located at one end of the clamp 4 adjacent to the cavity 11 and which can be used to abut against the embedded component placed in the mold. The elastic members 5 are respectively abutted against the corresponding clamps 4, and the force of the clamps 4 to move toward the cavity 11 can be applied, so that the clamps 4 can be utilized when the embedded components are placed in the cavity 11 of the mold. The top abutting portion 41 is abutted and fixed in the cavity 11.

A suitable positioning portion 42 can also be disposed on the clamp 4, and a corresponding positioning groove 313 can be disposed in the mold to move the positioning portion 42 in the positioning groove 313. When the clamp 4 is oscillated, the positioning portion 42 can be used to abut against both ends of the positioning groove 313 to stop the positioning, thereby controlling the stroke of the movement of the clamp 4.

The invention mainly provides a clamp 4 for fixing the injection molded embedded component 6, and an elastic component 5 is disposed at one end of the clamp 4, so that the clamp 4 can be elastically moved, and the elastic modulus of the elastic component 5 must be set with the plastic injection. The injection pressure is related, that is, when the liquid plastic is injected, the clamp 4 of the fixing device can be externally ejected by the plastic injection pressure to achieve the function of separating the injection molded product, and the liquid plastic can fill the original clamp 4 A notch is formed to form a complete ejection element (not shown) to completely flatten the finished product.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalents of the present invention and the equivalents of the drawings are all included in the present invention. Protection In the encirclement, he is given to Chen Ming.

1‧‧‧ first model

11‧‧‧ cavity

12‧‧‧Injection

13‧‧‧ flow path

2‧‧‧ second mode

3‧‧‧Locking mechanism

31‧‧‧Fixed column

311‧‧‧First hook

312‧‧ ‧ chute

313‧‧‧ positioning slot

32‧‧‧swing rod

321‧‧‧Second hook

4‧‧‧ fixture

41‧‧‧Abutment

411‧‧‧Bevel

42‧‧‧ Positioning Department

43‧‧‧ shaft

5‧‧‧Flexible components

6‧‧‧buried components

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view (I) of an injection mold fixing device of the present invention.

Fig. 2 is an exploded perspective view (2) of the injection mold fixing device of the present invention.

Fig. 3 is a perspective assembled view of the injection mold fixing device of the present invention.

Figure 4 is a cross-sectional view (I) of the injection mold fixing device of the present invention.

Figure 5 is a cross-sectional view (2) of the injection mold fixing device of the present invention.

Figure 6 is a cross-sectional view showing another embodiment of the injection mold fixing device of the present invention.

Figure 7 is a cross-sectional view showing still another embodiment of the injection mold fixing device of the present invention.

1‧‧‧ first model

11‧‧‧ cavity

12‧‧‧Injection

2‧‧‧ second mode

3‧‧‧Locking mechanism

31‧‧‧Fixed column

311‧‧‧First hook

312‧‧ ‧ chute

32‧‧‧swing rod

321‧‧‧Second hook

4‧‧‧ fixture

41‧‧‧Abutment

411‧‧‧Bevel

5‧‧‧Flexible components

6‧‧‧buried components

Claims (11)

An injection mold fixing device, the mold comprising a first mold and a second mold, a mold cavity between the first mold and the second mold, and a locking mechanism between the first mold and the second mold a plurality of sliding slots are disposed in the mold, the fixing device comprises: a plurality of clamps, wherein the clamps are movably disposed in the sliding slots, the clamps are located at an outer edge of the mold cavity, and the clamps each have a And a plurality of elastic members respectively abutting against the clamps, so that the top abutting portions of the clamps elastically extend into the cavity. The injection mold fixing device of claim 1, wherein the locking mechanism comprises a plurality of fixing columns and a plurality of swinging rods, wherein the fixing columns are fixed to the second mold, and the upper ends of the fixing columns are respectively provided a first hook portion, the upper ends of the swinging rods are respectively pivotally disposed on the first mold, and the lower ends of the swinging rods are respectively formed with a second hook portion, and the second hook portions of the swinging rods are hooked on the fixing columns The first hook portion is configured to relatively close the first mold and the second mold, and the sliding slots are disposed on the fixing posts. The injection mold fixing device according to claim 1 or 2, wherein the sliding grooves extend in a horizontal direction. The injection mold fixing device according to claim 1, wherein the clamps are respectively provided with positioning portions, wherein the molds are provided with corresponding positioning grooves, and the positioning portions are movably disposed on the positioning grooves. When the positioning portions are moved, the top portions abut against the two ends of the positioning groove to stop the positioning. The injection mold fixing device according to claim 1, wherein the clamps are formed with a slope at one end. The injection mold fixing device according to claim 1, wherein the elastic members are disposed at one end of the clamps away from the cavity. An injection mold fixing device, the mold comprising a first mold and a second mold, a mold cavity between the first mold and the second mold, and a locking mechanism between the first mold and the second mold The fixing device comprises: a plurality of clamps, wherein the clamps are respectively movably disposed in the mold by pivoting, the clamps are located at an outer edge of the mold cavity, and the clamps each have a top abutting portion; The elastic members respectively abut against the clamps, so that the top abutting portions of the clamps elastically extend into the cavity. The injection mold fixing device of the seventh aspect of the invention, wherein the locking mechanism comprises a plurality of fixing columns and a plurality of swinging rods, wherein the fixing columns are fixedly disposed on the second mold, and the upper ends of the fixing columns are respectively provided a first hook portion, the upper ends of the swinging rods are respectively pivotally disposed on the first mold, and the lower ends of the swinging rods are respectively formed with a second hook portion, and the second hook portions of the swinging rods are hooked on the fixing columns The first hook portion is configured to relatively close the first mold and the second mold. The injection mold fixing device according to claim 7, wherein the clamps are respectively provided with positioning portions, wherein the molds are provided with corresponding positioning grooves, and the positioning portions are movably disposed on the positioning grooves. When the positioning portions are moved, the top portions abut against the two ends of the positioning groove to stop the positioning. The injection mold fixing device according to claim 7, wherein the clamps are formed with a slope at one end. The injection mold fixing device of claim 7, wherein the elastic members are disposed at one end of the clamps away from the cavity.