CN205685663U - A kind of slant-top core-pulling mechanism of double-color mold - Google Patents

Abstract

The utility model provides an inclined top core-pulling mechanism of a two-color mold, which belongs to the technical field of injection molds. It solves the problem that the split first-color injection-molded parts cannot be connected during the injection-molding process of the second-color injection-molded parts. The inclined top core-pulling mechanism of this two-color mold, the elastic part has the tendency to rebound the limit part into the inclined top, the inclined top is set on the movable mold, and the first fixed mold is fixed when the first fixed mold and the movable mold are closed. It can act on the adjustment part so that the limit part protrudes from the inclined top, and makes the inclined top, the limit part, the first fixed mold and the movable mold form two independent first mold cavities, and the second fixed mold and the movable mold are closed The limiting part rebounds under the action of the elastic member during molding, and makes the second mold cavity be formed between the inclined top, the limiting part, the second fixed mold and the movable mold. The inclined top core-pulling mechanism of the two-color mold enables the first injection molded part and the second injection molded part to be integrally formed with the first injection molded part of split structure during the molding process of the second injection molded part.

Description

A Inclined Top Core Pulling Mechanism for Two-color Mold

technical field

The utility model belongs to the technical field of injection molds, and relates to an inclined top core-pulling mechanism of a two-color mold.

Background technique

With the development of injection molding technology, people have higher and higher requirements for plastic products, and more and more plastic products have higher and higher requirements for color. Many parts need two-color injection molding or multi-color injection molding, while the existing In the technological process, in order to make the two-color plastic products more beautiful, and at the same time make the two colors of the product form an obvious layered shape, and make the two colors fit together well to maintain adhesion, it is usually necessary to place it in the second mold The core-pulling mechanism of the hydraulic cylinder makes the mold mechanism complex and difficult to install. However, the first injection part needs to be a split structure, and the two parts of the first injection part can be connected during the molding process of the second injection part. Forming, people have developed a variety of two-color molds:

For example, Chinese patent application (application number: 201310348983.3) discloses a two-color mold with an inclined guide column and a slider mechanism, including a first fixed injection mold, a second fixed injection mold and a moving mold. The moving mold includes a moving template, a moving mold Die slider bead, slider, slider insert and wear-resistant sheet. The wear-resistant sheet is fixed on the movable mold. The two-color module also includes inclined guide posts and slider mechanisms. The inclined guide posts are fixed on the second shovel base On the two-shot fixed mold, the slider mechanism includes a slider seat, which is fixed on the movable mold by the slider bead of the movable mold, and the slider seat can move relatively on the wear-resistant sheet, and two straight grooves are arranged on the inclined guide post , the slider seat is provided with an elastic pin, one end of the elastic pin is provided with a straight surface and an inclined surface, and the other end is installed with a spring and installed on the slider seat through a fixed block, wherein when the mold is closed for the second time, the straight groove of the inclined guide post Cooperate with the slope of the elastic pin, and when the mold is opened for the second time, the straight groove of the inclined guide post matches the straight surface of the elastic pin.

Although the above-mentioned two-color mold solves the various defects of the traditional two-color mold to a certain extent, it still has the following defects: the injection molded part for the first color is a split structure, and the injection molded part for the second color needs Connecting the two parts of the injection molded part of the first color cannot be achieved through the above-mentioned two-color mold. In the process of molding the injection molded part of the second color, the two parts of the first color are connected, so that it is necessary to The injection molded part of the first color connects the injection molded part of the second color, thus complicating the process.

Contents of the invention

The purpose of this utility model is to solve the above-mentioned problems in the existing technology, and propose a slanted top core-pulling mechanism for a two-color mold. The technical problem to be solved by this utility model is how to provide the first injection molded part and the second injection molded part A two-color mold that integrally molds the second injection molded part and the first injection molded part with a split structure during the molding process of the second injection molded part.

The purpose of this utility model can be achieved through the following technical solutions: a kind of inclined top core-pulling mechanism of a two-color mold. , the elastic pin is set in the inclined top, and the elastic pin can slide in the inclined top, one end of the elastic pin is an adjustment part, the other end of the elastic pin is a limit part, and the upper end of the adjustment part is Connected with an elastic piece, the elastic piece has a tendency to rebound the limit part into the inclined top, the inclined top is set on the movable mold, and the first fixed mold can Acting on the adjustment part, the limit part protrudes from the inclined top, and makes the inclined top, limit part, the first fixed mold and the movable mold form two independent first mold cavities, and the second fixed mold and the movable mold are closed. When the stop part rebounds under the action of the elastic member, the second mold cavity is formed between the inclined top, the stop part, the second fixed mold and the movable mold, and the two independent first mold cavities The injection-molded first injection parts are all located in the second mold cavity.

Working principle: When the first fixed mold and the movable mold are closed, the first fixed mold acts on the adjustment part so that the limit part protrudes from the inclined roof, and makes the inclined roof, the limit part, the first fixed mold and the movable mold form two Two independent first mold cavities, at this time, the spring pin is sleeved on the elastic piece, the first injection molded part is molded in two independent first mold cavities, after the first injection molded part is formed, the first fixed mold is removed, At the same time, the second fixed mold and the movable mold are clamped, and at this time, the second cavity is formed between the inclined roof, the second fixed mold and the movable mold. When there is no injection molding, the second cavity contains the first cavity. After the first fixed mold and the movable mold are closed, the first injection molded part is injection molded, and the first mold cavity in the second mold cavity is filled by the first injection molded part. The position part rebounds into the inclined top, at this time, the elastic member rebounds the limit part and makes the second mold cavity communicate with two independent first mold cavities.

Through the cooperation between the first fixed mold, the movable mold, the inclined top and the spring pin, after the first fixed mold and the movable mold are closed, the inclined top, the limit part, the first fixed mold and the movable mold form two The independent first cavity, and the cooperation of the second fixed mold, movable mold, inclined top, spring pin and elastic parts can realize the connection between the second cavity and the two independent first cavity, and further In the molding process of the second injection molded part, the second injection molded part is integrally molded with the first injection molded part with split structure, which further saves the process of re-merging the first injection molded part and the second injection molded part after molding, so that The molding process of the second injection molded part and the first injection molded part adopting the split structure is simpler.

In the aforementioned inclined top core-pulling mechanism of the two-color mold, the inclined top core-pulling mechanism also includes a limit block and a limit groove, the limit groove is set on the inclined top, and the limit block is arranged in the limit groove and can slide along the limiting groove, and the elastic member can drive the limiting block to move away from the second mold cavity to abut against the groove wall of the limiting groove.

The setting of the limit groove can further help to limit the position of the spring pin when the second fixed mold and the movable mold are closed, so that the position of the spring pin will not deviate when it rebounds, so that it can further realize During the molding process of the second injection molded part, the second injection molded part is integrally molded with the first injection molded part adopting a split structure.

In the above-mentioned inclined top core-pulling mechanism of the two-color mold, the inclined top core-pulling mechanism also includes a spring pin fixing block, and the spring pin fixing block is provided with a mounting groove, and the adjusting part is embedded in the mounting groove, and fastened Press the spring pin fixing block on the adjustment part.

The setting of the spring pin fixing block can make the spring pin be better fixed in the inclined roof, and can slide along the inclined roof. At the same time, the adjustment part does not need to be against the first fixed mold and the second fixed mold, thereby reducing the The degree of wear of the pins prevents position deviation after the two-color mold is used for many times, so that the molding accuracy of the first injection molded part and the second injection molded part is higher.

In the above-mentioned inclined top core-pulling mechanism of the two-color mold, the inclined top core-pulling mechanism also includes a locking block, the locking block is fixed on the first fixed mold and can abut against the pin fixing block, and the locking block is A relief slot is provided, and the end of the elastic pin fixing block away from the adjustment part is embedded in the relief slot.

The relief groove set on the lock block is matched with one end of the spring pin fixing block, so that when the first fixed mold and the movable mold are closed, the spring pin can further divide the first mold cavity into two independent first molds. The cavity makes it easier and more convenient to form the second injection molded part and the first injection molded part with a split structure during the molding process of the second injection molded part.

In the aforementioned inclined top core-pulling mechanism of the two-color mold, the two-color mold also includes an inclined ejector rod and a slider, the upper end of the inclined ejector rod passes through the movable mold and is inserted on the inclined ejector, The lower end is connected with the slide block.

The setting of the inclined ejector rod and the slide block can make demoulding more convenient and fast, thereby making demoulding more convenient after the second injection molded part is formed, and further improving the work efficiency of mold forming.

In the aforementioned inclined top core-pulling mechanism of the two-color mold, the elastic member is a spring or an elastic rubber block.

The elastic part is a spring or an elastic rubber block, both of which have a tendency to rebound the limiting part into the inclined top, ensuring that the second injection part is separated from the first injection part with a split structure during the molding process of the second injection part. The process of integral molding of parts is carried out smoothly.

Compared with the existing technology, the inclined top core-pulling mechanism of the two-color mold has the following advantages:

1. Through the cooperation between the first fixed mold, movable mold, inclined top and spring needle, two independent first mold cavities can be realized by the inclined top, limit part, first fixed mold and movable mold, while the second The cooperation of the fixed mold, the movable mold, the inclined top, the spring pin and the elastic member can realize the communication between the second cavity and the two independent first cavities, so that the second cavity can be realized during the molding process of the second injection molded part. The second injection molded part is integrally formed with the first injection molded part adopting a split structure.

2. Through the cooperation of the spring pin fixing block and the locking block, it can be realized that when the second injection molding part is integrally formed with the first injection molding part with a split structure during the molding process of the second injection molding part, the first fixed mold can also be reduced. And the loss of the second fixed mold to the pin.

3. The cooperation of the limit block and the limit groove can help the spring pin position the second cavity after the first injection molding is completed, ensuring the smooth progress of the second injection.

Description of drawings

Fig. 1 is a cross-sectional view of the first fixed mold and movable mold clamping in the inclined top core-pulling mechanism of the two-color mold.

Fig. 2 is a cross-sectional view of the second fixed mold and movable mold in the inclined top core-pulling mechanism of the two-color mold.

Fig. 3 is an exploded view of the second fixed mould, inclined top and moving mold in the inclined top core-pulling mechanism of the two-color mold.

In the figure, 1, the first fixed mold; 11, the first mold cavity; 12, the first injection molded part; 2, the second fixed mold; 21, the second mold cavity; 22, the lock block; 23, the second injection molded part; 221, give way slot; 222, fasteners; 3, moving mold; 4, inclined top; 41, limit groove; 5, spring pin; 51, adjustment part; 52, limit part; 6, spring; 7, Limiting block; 8, spring pin fixing block; 81, installation groove; 9, inclined ejector rod; 10, slide block.

detailed description

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

Embodiment one

As shown in Figure 1, the inclined top core-pulling mechanism of the two-color mold includes a first fixed mold 1, a second fixed mold 2, a movable mold 3, an inclined top 4 and a spring pin 5.

Specifically, as shown in Figure 1-3, the elastic pin 5 is installed in the inclined top 4, and the elastic pin 5 can slide in the inclined top 4. One end of the elastic pin 5 is an adjustment part 51, and the other end of the elastic pin 5 One end is a limiting part 52, and the adjusting part 51 is sleeved with an elastic member, which has a tendency to rebound the limiting part 52 into the inclined roof 4, and the inclined roof 4 is arranged on the movable mold 3, and the first fixed mold 1. When closing the mold with the movable mold 3, the first fixed mold 1 can act on the adjustment part 51 so that the stopper 52 extends out of the inclined top 4, and makes the inclined top 4, the stopper 52, the first fixed mold 1 and the movable mold 3 Form two independent first mold cavities 11, when the second fixed mold 2 and the movable mold 3 are closed, the stopper 52 rebounds under the action of the elastic member, and makes the inclined top 4, the stopper 52, the second A second mold cavity 21 is formed between the fixed mold 2 and the movable mold 3 , and the first injection molded parts 12 injection-molded in the two independent first mold cavities 11 are located in the second mold cavity 21 .

Working principle: the inclined top 4 is set between the first fixed mold 1 and the movable mold 3, so that the first mold cavity 11 is formed between the inclined top 4 and the first fixed mold 1 and the movable mold 3, and the spring pin 5 is put on the sleeve Connected to the elastic piece, when the first fixed mold 1 and the movable mold 3 are closed, the first fixed mold 1 can act on the adjustment part 51 so that the limit part 52 extends out of the inclined top 4, and makes the inclined top 4, the limit Part 52, the first fixed mold 1 and the movable mold 3 form two independent first mold cavities 11. At this time, the first injection molded part 12 is molded in the two independent first mold cavities 11. After the first injection molded part 12 is formed , move out the first fixed mold 1, and simultaneously mold the second fixed mold 2 and the movable mold 3, and at this time, a second mold cavity 21 is formed between the inclined roof 4, the second fixed mold 2 and the movable mold 3, When there is no injection molding, the second mold cavity 21 includes the first mold cavity 11. After the first fixed mold 1 and the movable mold 3 are closed, the first injection molded part 12 is injection molded, and the first mold cavity in the second mold cavity 21 11 is filled with the first injection molded part 12, and the elastic member sleeved on the elastic pin 5 has a tendency to rebound the stopper 52 into the inclined top 4, at this time, the elastic member rebounds the stopper 52 and makes the The second mold cavity 21 is connected with two independent first mold cavities 11, and through the cooperation between the first fixed mold 1, the movable mold 3, the inclined top 4 and the spring pin 5, the inclined top 4, the position limiting Part 52, the first fixed mold 1 and the movable mold 3 form two independent first mold cavities 11, and the cooperation of the second fixed mold 2, the movable mold 3, the inclined top 4, the spring pin 5 and the elastic member can realize the first The second mold cavity 21 communicates with two independent first mold cavities 11, and at the same time, it can further realize the integration of the second injection molded part 23 with the first injection molded part 12 adopting a split structure during the molding process of the second injection molded part 23. Molding further saves the process of re-merging the first injection molded part 12 and the second injection molded part 23 after molding, making the molding process of the second injection molded part 23 and the first injection molded part 12 with a split structure simpler.

More specifically, as shown in Figure 1, the inclined roof core-pulling mechanism also includes a limiting block 7 and a limiting groove 41, the limiting groove 41 is set on the inclined roof 4, and the limiting block 7 is arranged in the limiting groove 41 and can slide along the limiting groove 41, the elastic member can drive the limiting block 7 to move away from the second cavity 21 to abut against the groove wall of the limiting groove 41, and the setting of the limiting groove 41 can further It helps to limit the position of the spring pin 5 when the second fixed mold 2 and the movable mold 3 are closed, so that the position of the spring pin 5 will not deviate when it rebounds, so that it can be further realized in the second injection molding During the molding process of the part 23, the second injection molded part 23 is integrally molded with the first injection molded part 12 adopting a split structure.

Furthermore, as shown in Figure 1-3, the inclined top core-pulling mechanism also includes a spring pin fixing block 8 and a locking block 22, the spring pin fixing block 8 is provided with a mounting groove 81, and the adjusting part 51 is embedded in the mounting groove 81, And the fastener 222 presses the elastic pin fixing block 8 on the adjustment part 51, the locking block 22 is fixed on the first fixed mold 1 and can abut against the elastic pin fixing block 8, and the locking block 22 is provided with a relief groove 221, the end of the elastic pin fixing block 8 away from the adjustment part 51 is embedded in the relief groove 221, the setting of the elastic pin fixing block 8 can make the elastic pin 5 be better fixed in the inclined top 4, and can be moved along the inclined top 4 Sliding also makes the adjustment part 51 not need to abut against the first fixed mold 1 and the second fixed mold 2, thereby reducing the degree of wear of the spring needle 5, so that after multiple uses, no position deviation will occur. The set relief groove 221 is matched with one end of the spring pin fixing block 8, so that when the first fixed mold 1 and the movable mold 3 are closed, the spring pin 5 can further divide the first mold cavity 11 into two independent parts. The first mold cavity 11 makes it easier and more convenient to mold the second injection molded part 23 and the first injection molded part 12 with a split structure during the molding process of the second injection molded part 23 .

As shown in Figure 3, the two-color mold also includes a ram 9 and a slider 10, the upper end of the ram 9 passes through the movable mold 3 and is inserted into the ram 4, the lower end of the ram 9 is connected to the slider 10 Connected, the setting of the inclined ejector rod 9 and the slide block 10 can make the demoulding more convenient and fast, so that the demoulding after the second injection molded part 23 is formed is more convenient, and the working efficiency of the mold forming is further improved.

As shown in Figure 1-3, the elastic member is a spring 6, which is sleeved on the spring pin 5, and the spring 6 abuts against the spring pin fixing block 8, the elastic member is a spring 6, and the spring 6 has a position-limiting part The tendency of 52 to spring back into the inclined top 4 ensures that the integral molding process of the second injection molded part 23 and the first injection molded part 12 adopting a split structure goes smoothly during the molding process of the second injection molded part 23 .

Embodiment two

The inclined top core-pulling mechanism of the two-color mold of this embodiment is basically the same as that of Embodiment 1, the difference is that the elastic part is an elastic rubber block, and the elastic rubber block is sleeved on the spring pin 5, and the elastic rubber block and the spring pin The fixed block 8 abuts against, and the elastic part is an elastic rubber block, which has a tendency to rebound the position-limiting part 52 into the inclined roof 4, ensuring that the second injection molded part 23 is formed during the molding process of the second injection molded part 23 The process of integral molding with the first injection molded part 12 adopting a split structure goes smoothly.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (6)

1. An inclined top core-pulling mechanism of a two-color mold, the two-color mold includes a first fixed mold (1), a second fixed mold (2), a moving mold (3), an inclined top (4) and a spring pin (5) , it is characterized in that, the elastic pin (5) is set in the inclined top (4), and the elastic pin (5) can slide in the inclined top (4), and one end of the elastic pin (5) is an adjustment part (51), the other end of the elastic needle (5) is a limiting part (52), and an elastic piece is sleeved on the adjusting part (51), and the elastic piece has the ability to return the limiting part (52) The trend of springing into the inclined roof (4), the inclined roof (4) is set on the movable mold (3), when the first fixed mold (1) and the movable mold (3) are closed, the first fixed mold (1 ) can act on the adjusting part (51) so that the limiting part (52) protrudes from the inclined roof (4), and makes the inclined roof (4), the limiting part (52), the first fixed mold (1) and the movable mold (3) two independent first mold cavities (11) are formed, and when the second fixed mold (2) and the movable mold (3) are closed, the stopper (52) rebounds under the action of the elastic member, And make the second mold cavity (21) be formed between the inclined top (4), the stopper (52), the second fixed mold (2) and the movable mold (3), and the two independent first mold cavities ( 11) The first injection molded parts (12) for internal injection molding are all located in the second mold cavity (21). 2. The inclined-top core-pulling mechanism of the two-color mold according to claim 1, characterized in that, the inclined-top core-pulling mechanism also includes a limiting block (7) and a limiting groove (41), and the limiting groove ( 41) set on the inclined top (4), the limit block (7) is arranged in the limit groove (41) and can slide along the limit groove (41), and the elastic member can drive the limit block ( 7) Move away from the second mold cavity (21) to abut against the groove wall of the limiting groove (41). 3. The inclined-top core-pulling mechanism for a two-color mold according to claim 1 or 2, characterized in that, the inclined-top core-pulling mechanism also includes a spring pin fixing block (8), on which the spring pin fixing block (8) An installation groove (81) is provided, the adjustment part (51) is embedded in the installation groove (81), and the fastener (222) presses the elastic pin fixing block (8) onto the adjustment part (51). 4. The inclined top core-pulling mechanism of the two-color mold according to claim 3, characterized in that, the inclined top core-pulling mechanism also includes a locking block (22), and the locking block (22) is fixed on the first fixed mold ( 1) and can abut against the spring pin fixing block (8), the lock block (22) is provided with a relief slot (221), and the spring pin fixing block (8) is far away from the end of the adjustment part (51) Embed in the relief groove (221). 5. The inclined top core-pulling mechanism of the two-color mold according to claim 1 or 2, characterized in that, the two-color mold also includes an inclined ejector rod (9) and a slider (10), and the inclined ejector rod (9) The upper end of the upper end passes through the movable mold (3) and is inserted on the inclined roof (4), and the lower end of the inclined ejector rod (9) is connected with the slide block (10). 6. The inclined top core-pulling mechanism of the two-color mold according to claim 1 or 2, characterized in that, the elastic member is a spring (6) or an elastic rubber block.