CN204955310U - A plastic mould structure for promoting product quality - Google Patents

Abstract

The utility model relates to a plastic mold structure for improving product quality, comprising a mold base, a cavity is arranged inside the mold base, an opening communicating with the cavity is arranged on the mold base, and the A movable first ejector plate and a second ejector plate are arranged in the cavity, a central core is arranged on the second ejector plate, and the central core passes through the first ejector plate and the opening Extending to the upper surface of the mold base, the first ejector plate is provided with ejector pins for ejecting the molded product at the top of the central core, and between the first ejector plate and the second ejector plate is provided with The limit screw for adjusting the position of the first thimble plate and the second thimble plate is provided with a lower mold core outside the upper end of the center core, and an upper mold core is arranged above the lower mold core. The utility model can directly Clean and wipe the mold core on the injection molding machine to ensure smooth exhaust, reduce the number of cleaning and maintenance of the lower mold, and greatly improve the quality of injection molding products.

Description

A plastic mold structure for improving product quality

【Technical field】

The utility model relates to a plastic mold structure for improving product quality.

【Background technique】

Mold, various molds and tools used in industrial production for injection molding, blow molding, extrusion, die-casting or forging forming, smelting, stamping and other methods to obtain the required products. In short, molds are tools used to shape objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object through the change of the physical state of the formed material.

For precision products, in order to ensure the stability of the product size, the exhaust of the mold must be considered on the mold. The solution to the poor exhaust is to make inserts. The traditional inserts are fixed. This method only It can correspond to small batch production. If mass production is required, gas gas will be generated during the plastic injection molding process. This gas will block the exhaust gap between the inserts and cause defective products, because the core inserts are fixed. , It is impossible to clean it directly on the injection molding machine. At this time, the mold can only be lowered and completely disassembled for cleaning and maintenance. After the mold is installed, the machine will be restarted for production. Repeated operations will greatly reduce production efficiency.

As shown in Figure 5, the plastic mold structure of the non-movable core is used to improve product quality. After the mold is opened, the product A is ejected from the lower mold core 5 under the action of the thimble 21. This structure produces hundreds of thousands of molds. The gas gas produced in the injection molding process will block the exhaust gap between the central core 31 and the lower mold core 5, causing the product to be trapped and poor.

Because there is above-mentioned problem, it is necessary to propose solution to it, and the utility model just makes under such background.

【Content of utility model】

The technical problem to be solved by the utility model is to provide a plastic mold structure for improving product quality in view of the above-mentioned deficiencies in the prior art. Through the improvement of the plastic mold structure for improving product quality, it can be directly used on the injection molding machine. The core part is cleaned and wiped to ensure smooth exhaust, reduce the number of cleaning and maintenance of the lower mold, improve production efficiency, reduce costs, and greatly improve the quality of injection molding products.

In order to achieve the above object, the utility model adopts the following technical solutions:

A plastic mold structure for improving product quality, comprising a mold base, a cavity is provided in the mold base, an opening communicating with the cavity is provided on the mold base, and in the cavity A movable first pin plate and a second pin plate are provided, and a central core is arranged on the second pin plate, and the central core passes through the first pin plate and the opening and extends to the On the upper surface of the mold frame, an ejector pin for ejecting the molded product at the top of the center core is provided on the first ejector plate, and an ejector pin for adjusting the first ejector plate and the second ejector plate is provided between the first ejector plate and the second ejector plate. A thimble plate and a limit screw at the position of the second thimble plate are provided with a lower mold core outside the upper end of the central core, and an upper mold core is provided above the lower mold core.

A spring is arranged between the inner wall of the above-mentioned mold base and the second ejector plate.

Positioning pins are arranged in the mold frame as described above, and the positioning pins pass through the first ejector plate and the second ejector plate.

As mentioned above, the first ejector plate and the second ejector plate are stacked, and the first ejector plate is arranged above the second ejector plate.

As mentioned above, the first thimble plate is formed by fastening two stacked plates through the first fastening screw, the thimble is fixed on the lower plate, and the second thimble plate is formed by two stacked plates through the second fastening screw. It is formed by fastening screws, and the central core is fixed on the lower plate.

The beneficial effects of the utility model are:

1. Through the improvement of the structure of the plastic mold used to improve product quality, the utility model can directly clean and wipe the mold core part on the injection molding machine to ensure smooth exhaust, reduce the number of cleaning and maintenance of the lower mold, improve production efficiency, and reduce costs. Significantly improve the quality of injection molding products.

2. The utility model provides a plastic mold structure for improving product quality. The plastic mold structure for improving product quality realizes the movement of the center core through different stroke settings. When the center core is cleaned and maintained After that, reset the ejection stroke of the injection molding machine to restore it to the production state, so that the second batch of production can be carried out again, and such repeated operations can greatly increase the output of the product.

3. In the utility model, a spring is provided between the inner wall of the mold base and the second ejector plate. During production, after the mold is opened, the ejector rod of the injection molding machine is pushed against the first ejector plate, so that the first ejector plate The thimble plate moves forward, the second thimble plate is kept stationary under the action of the spring, and the thimble moves forward with the first thimble plate, thereby ejecting the product A molded on the center core. At this time, it must be set The injection molding machine only pushes out the distance L, and the size of L can be set according to the actual situation, preferably 5mm, with ingenious design and precise molding.

4. In the utility model, the first ejector plate and the second ejector plate are stacked, the first ejector plate is arranged above the second ejector plate, and the first ejector plate is passed by two stacked plates The first fastening screw is fastened, the thimble is fixed on the lower plate, the second thimble plate is formed by two stacked plates fastened by the second fastening screw, and the center core is fixed. On the lower plate, this setting is convenient for adjusting and positioning the mold, and it is easy to operate.

【Description of drawings】

Fig. 1 is the cross-sectional schematic view of the mold clamping of the utility model.

Fig. 2 is a schematic cross-sectional view of the utility model when the mold is opened and the product is pushed out.

Fig. 3 is a schematic cross-sectional view of the state of pushing out the product and the center core of the present invention.

FIG. 4 is an exploded schematic diagram of FIG. 3 .

5 is a schematic cross-sectional view of a plastic mold structure used to improve product quality in the prior art.

【detailed description】

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figures 1 to 4, a plastic mold structure for improving product quality includes a mold base 1, a cavity 10 is provided in the mold base 1, and the mold base 1 is provided with the mold base 1. The opening 11 communicating with the cavity 10 is provided with a movable first ejector plate 2 and a second ejector plate 3 in the cavity 10, and a central core 31 is provided on the second ejector plate 3, so The central core 31 extends to the upper surface of the formwork 1 through the first ejector plate 2 and the opening 11, and the first ejector plate 2 is provided with a top end for ejecting the central core 31. The thimble 21 of the molded product is provided with a stop screw 4 for adjusting the position of the first thimble plate 2 and the second thimble plate 3 between the first thimble plate 2 and the second thimble plate 3, and in the center The outer side of the upper end of the core 31 is provided with a lower mold core 5, and an upper mold core 6 is arranged above the lower mold core 5. The utility model can directly mold on the injection molding machine by improving the structure of the plastic mold used to improve product quality. The core part is cleaned and wiped to ensure smooth exhaust, reduce the number of cleaning and maintenance of the lower mold, improve production efficiency, reduce costs, and greatly improve the quality of injection molding products. The plastic mold structure used to improve product quality realizes the center through different stroke settings. The movement of the core, after cleaning and maintaining the center core, reset the ejection stroke of the injection molding machine to restore it to the production state, so that the second batch of production can be carried out again, so repeated operations can be greatly improved increase product yield.

As shown in Fig. 1, Fig. 2, Fig. 3, and Fig. 4, in this embodiment, a spring 7 is arranged between the inner wall of the mold base 1 and the second ejector plate 3. During production, when the mold is opened Finally, the ejector stick of the injection molding machine is pushed against the first ejector plate 2, so that the first ejector plate 2 moves forward, and the second ejector plate 3 is kept still under the action of the spring 7, and the ejector pin 21 follows the direction of the first ejector plate 2. front movement, thereby ejecting the molded product A on the center core 31. At this time, the injection molding machine must be set to only eject the distance L. The size of L can be set according to the actual situation. It is preferably 5 mm. The design is clever and the molding accurate.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, in this embodiment, a positioning pin 8 is arranged inside the mold frame 1, and the positioning pin 8 passes through the first ejector plate 2 and the second ejector plate. Two ejector plates 3, the positioning pins 8 make the first ejector plate 2 and the second ejector plate 3 move along the positioning pins 8, which is convenient for controlling the stroke and controlling the precision of the mould.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, in this embodiment, the first ejector plate 2 and the second ejector plate 3 are stacked, and the first ejector plate 2 is arranged on the second ejector plate. Above the thimble plate 3, this setting is convenient for adjusting and positioning the mould, and is convenient for operation.

As shown in Fig. 1, Fig. 2, Fig. 3, and Fig. 4, in this embodiment, the first thimble plate 2 is formed by fastening two stacked plates through first fastening screws 91, and the thimble 21 Fixed on the lower plate, the second thimble plate 3 is formed by fastening two stacked plates through the second fastening screw 92, and the central core 31 is fixed on the lower plate. The improvement of the plastic mold structure to improve product quality allows the mold core to be cleaned and wiped directly on the injection molding machine to ensure smooth exhaust, reduce the number of cleaning and maintenance of the lower mold, improve production efficiency, reduce costs, and greatly improve the quality of injection molding products.

As shown in Fig. 1, Fig. 2, Fig. 3, and Fig. 4, in this embodiment, when the mold produces hundreds of thousands of molds, the gas gas generated during the injection molding process will block the central core 31 and the lower mold core. 5 The exhaust gap in the middle causes the product to be trapped. At this time, it is only necessary to set the ejection stroke of the injection molding machine to H, and the second ejector plate 3 is driven forward by a distance S under the action of the limit screw 4. , so that the center core 31 is ejected beyond the upper surface of the lower mold core 5, and the center core 31 is cleaned and maintained. After cleaning, the ejection stroke of the injection molding machine is set to L again, so that the second Batch production, such repeated operations can greatly improve the output of products, L is preferably 5mm, S is preferably 6mm, and the length of H is equal to the sum of the lengths of L and S, preferably 11mm. The utility model provides a The plastic mold structure used to improve product quality. The plastic mold structure used to improve product quality realizes the movement of the center core through different stroke settings. After the center core is cleaned and maintained, reset the injection molding machine. Push out the stroke to make it return to the production state, so that the second batch of production can be carried out again, and such repeated operations can greatly increase the output of the product.

Claims (5)

1. A plastic mold structure for improving product quality, is characterized in that: comprise formwork (1), be provided with cavity (10) in described formwork (1), in described formwork (1) An opening (11) communicating with the cavity (10) is provided on the top, and a movable first thimble plate (2) and a second thimble plate (3) are arranged in the cavity (10). A center core (31) is provided on the second ejector plate (3), and the center core (31) extends to the formwork through the first ejector plate (2) and the opening (11) (1) upper surface, on the first ejector plate (2) is provided with a thimble (21) for ejecting the molded product at the top of the center core (31), on the first ejector plate (2) and A limit screw (4) for adjusting the position of the first ejector plate (2) and the second ejector plate (3) is arranged between the second ejector plates (3), outside the upper end of the center core (31) A lower mold core (5) is provided, and an upper mold core (6) is arranged above the lower mold core (5). 2. The plastic mold structure for improving product quality according to claim 1, characterized in that: a spring (7) is provided between the inner wall of the mold frame (1) and the second ejector plate (3) . 3. The plastic mold structure for improving product quality according to claim 1 or 2, characterized in that: positioning pins (8) are provided in the mold base (1), and the positioning pins (8) pass through Pass through the first ejector plate (2) and the second ejector plate (3). 4. The plastic mold structure for improving product quality according to claim 3, characterized in that: the first ejector plate (2) and the second ejector plate (3) are stacked, and the first ejector plate ( 2) Set above the second ejector plate (3). 5. The plastic mold structure for improving product quality according to claim 4, characterized in that: said first ejector plate (2) is fastened by two stacked plates through first fastening screws (91). The thimble (21) is fixed on the lower plate, the second thimble plate (3) is formed by fastening two stacked plates through the second fastening screw (92), and the central core ( 31) be fixedly arranged on the lower plate.