CN203726730U - Injection mold - Google Patents

Abstract

The utility model discloses an injection mold and aims to provide the injection mold which is good in cooling effect and capable of accelerating molding. According to the technical scheme, theinjection mold is characterized by comprising a moving mold base plate, a push plate, a moving mold, a fixed mold and a fixed mold base plate which are stacked sequentially, wherein contact surfaces when the moving mold and the fixed mold are closed form a cavity; a runner communicated with the cavity is formed in the fixed mold and penetrates through the fixed mold and the fixed mold base plate; annular runners are formed in both the fixed mold and the moving mold; liquid inlets and liquid outlets which are arranged symmetrically are formed in both the fixed mold and the moving mold; water inlet pipes are connected onto the liquid inlets; a pump is arranged at the other end, which is opposite to each liquid inlet, of each water inlet pipe; a main three-way joint is arranged in a position where the water inlet pipes are connected with a water outlet of the pump; a bucket is connected onto a water inlet of the pump; water outlet pipes are connected onto the liquid outlets; the other end, which is opposite to each liquid outlet, of each water outlet pipe is connected with the top of the bucket; and a secondary three-way joint is arranged in a position where the water outlet pipes are connected with the bucket. Water can flow in the annular runners, the heat is reduced, and the productivity is increased.

Description

injection mold

technical field

The utility model relates to an injection mold, more specifically, it relates to an injection mold with good cooling effect and accelerated molding.

Background technique

Injection mold is a tool for producing plastic products, and it is also a tool for giving plastic products a complete structure and precise dimensions. The injection mold only needs to be composed of a moving mold and a fixed mold. The moving mold is installed on the moving template of the injection molding machine, and the fixed mold Installed on the fixed template of the injection molding machine, the movable mold and the fixed mold are closed to form the pouring system and cavity during injection molding, and the movable mold and the fixed mold are separated to take out the plastic product when the mold is opened.

In the process of producing plastic products by injection molds, the production cycle mainly includes injection molding time, pressure holding time, cooling time and mold opening time, and the cooling time accounts for about half of the entire production cycle, which greatly affects the production efficiency of the product. Accelerating the cooling time of products is of great significance for improving production efficiency.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide an injection mold with good cooling effect and quick mold forming.

In order to achieve the above object, the utility model provides the following technical solutions: an injection mold, including a movable mold seat plate, a push plate, a movable mold, a fixed mold and a fixed mold seat plate stacked in sequence, the movable mold and the fixed mold seat plate The closed contact surface of the fixed mold forms a cavity, and the fixed mold is provided with a runner communicating with the cavity, and the runner runs through the fixed mold and the seat plate of the fixed mold, and the fixed mold and the fixed mold The movable mold is provided with an annular flow channel, and the fixed mold and the movable mold are provided with symmetrically arranged liquid inlets and liquid outlets, and the liquid inlets and the liquid outlets are connected to the ring The flow passages are connected, and the water inlets are connected with water inlet pipes. The other end of the water inlet pipes opposite to the liquid inlets is provided with a pump. The connection between the water inlet pipes and the outlet of the pump is provided with a main three A water bucket is connected to the water inlet of the pump, and a water outlet pipe is connected to the liquid outlet, and the other end of the water outlet pipe opposite to the liquid outlet is connected to the top of the water bucket. The connection between the water pipe and the bucket is provided with a secondary three-way joint.

By adopting the above technical scheme, the pump can be started when the injection mold is working, the water inlet of the pump draws water from the bucket, and enters the main tee joint from the water outlet, and the water enters the two water inlet pipes respectively through the main tee joint, and Entering the annular flow channel of the fixed mold and the movable mold, the setting of the annular flow channel can avoid the phenomenon that it communicates with the runner, which affects the normal operation of the injection mold, and the liquid inlet and the liquid outlet are arranged symmetrically, so that the water enters the annular flow The channel is divided into two branches, which flow through the entire annular flow channel and flow out from the liquid outlet, taking away the heat of the fixed mold and the movable mold. The flow channel is located on both sides of the cavity, and the cold water can cool well and accelerate the cooling of the product. Time, improve productivity, the liquid in the flow channel can pass through the outlet pipe, and flow back into the bucket through the secondary tee joint, so as to realize the recycling of water resources and avoid waste. Connecting the secondary tee joint with the top of the bucket can effectively prevent The water in the bucket creates backflow and creates resistance.

The utility model is further set as: the plane size of the annular flow channel is one-third of the plane size of the fixed mold or the moving mold.

By adopting the above technical solution, the area of the annular flow channel is large, which can better cool down the inside of the fixed mold and the movable mold, and also accelerate the molding time of the plastic product, reduce the production cycle, and increase the productivity.

The utility model is further configured as follows: the bucket, the water inlet pipe and the water outlet pipe are all made of aluminum material, and the outer surface is provided with a number of cooling fins.

By adopting the above technical scheme, the aluminum material not only has good corrosion resistance, but also has a good heat dissipation effect. Radiating fins are arranged on the outer walls of the bucket, water inlet pipe, and water outlet pipe, which further speeds up and improves the heat dissipation effect. The outflowing liquid can dissipate heat well when flowing through the water inlet pipe, outlet pipe and bucket, and the cooled liquid can be recycled again without frequent replacement of liquid, which is simple and convenient, and improves productivity.

The utility model is further configured as follows: the lower part of the bucket is provided with an annular slope for collecting the water inside the bucket towards the middle, the bottom of the slope is provided with a sewage storage part, and the bottom of the sewage storage part is provided with a bottom cover , the middle part of the dirt storage part is provided with a cut-off valve.

By adopting the above technical scheme, when the liquid in the bucket is used for a long time, the impurities and dirt in the flow channel will flow into the bucket and settle down at the bottom of the bucket. The annular slope at the bottom of the bucket can move the dirt in the water to the middle. The sewage storage part is collected together, and the shut-off valve in the middle of the sewage storage part is opened during normal use, so that the dirt is concentrated at the bottom of the sewage storage part. When it is necessary to discharge sewage, first close the shut-off valve, and then open the bottom cover. The utility model can discharge the dirt without wasting the clean water in the bucket, is simple and convenient, and saves the waste of water resources.

Description of drawings

Fig. 1 is the general structural diagram of the utility model injection mold embodiment;

Fig. 2 is the structural diagram of fixed mold of the utility model injection mold embodiment;

Fig. 3 is a sectional view of the bucket A-A of the injection mold of the present invention.

Reference signs: 1, movable mold seat plate; 2, push plate; 3, movable mold; 4, fixed mold; 5, fixed mold seat plate; 6, annular flow channel; 7, water inlet pipe; 8, pump; 9, Main tee joint; 10, bucket; 11, outlet pipe; 12, secondary tee joint; 13, heat sink; 14, annular slope; 15, sewage storage part; 16, bottom cover; 17; stop valve; 18, pouring road.

Detailed ways

The embodiment of the injection mold of the present invention will be further described with reference to Fig. 1 to Fig. 3 .

An injection mold, comprising a movable mold base plate 1, a push plate 2, a movable mold 3, a fixed mold 4, and a fixed mold base plate 5 stacked in sequence, and the closed contact surface of the movable mold 3 and the fixed mold 4 constitutes cavity, the fixed mold 4 is provided with a runner 18 communicating with the cavity, the runner 18 runs through the fixed mold 4 and the seat plate of the fixed mold 4, the fixed mold 4 and the fixed mold The movable mold 3 is provided with an annular flow channel 6, and the fixed mold 4 and the movable mold 3 are provided with symmetrically arranged liquid inlets and liquid outlets, and the liquid inlets and the liquid outlets are all connected to the The annular flow channel 6 communicates, the liquid inlet is connected with a water inlet pipe 7, and the other end of the water inlet pipe 7 opposite to the liquid inlet is provided with a pump 8, and the water inlet pipe 7 is connected to the pump 8 The outlet connection of the pump 8 is provided with a main tee joint 9, the water inlet of the pump 8 is connected with a bucket 10, and the liquid outlet is connected with an outlet pipe 11, and the outlet pipe 11 is opposite to the outlet of the liquid outlet. The other end is connected to the top of the water bucket 10 , and a secondary three-way joint 12 is provided at the connection between the water outlet pipe 11 and the water bucket 10 .

By adopting the above technical scheme, when the injection mold is working, the pump 8 can be started, and the water inlet of the pump 8 draws water from the bucket 10, and enters the main tee joint 9 from the water outlet, and the water enters the two water tanks through the main tee joint 9 respectively. water inlet pipe 7, and enter the annular flow channel 6 of the fixed mold 4 and the movable mold 3, the annular flow channel 6 on the fixed mold 4 is at the upper part of the cavity, and the annular flow channel 6 on the movable mold 3 is at the lower part of the cavity, The setting of the annular flow channel 6 can avoid the phenomenon that it communicates with the runner 18 and affect the normal operation of the injection mold, and the liquid inlet and the liquid outlet are arranged symmetrically, so that the water enters the annular flow channel 6 and is divided into two branches. It flows through the entire annular flow channel 6 and flows out from the liquid outlet, taking away the heat of the fixed mold 4 and the movable mold 3. The flow channel is located on both sides of the cavity, and the cold water can cool well, speeding up the cooling time of the product and improving productivity , the liquid in the runner can pass through the outlet pipe 11, and flow back to the bucket 10 through the secondary three-way joint 12, so as to realize the recycling of water resources and avoid waste. Connecting the secondary three-way joint 12 with the top of the water bucket 10 can effectively Prevent the water in the bucket 10 from flowing back and causing resistance.

The planar size of the annular runner 6 is one-third of the planar size of the fixed die 4 or the movable die 3 .

By adopting the above technical solution, the area of the annular flow channel 6 is large, which can better cool down the inside of the fixed mold 4 and the movable mold 3, and also accelerate the molding time of plastic products, reduce the production cycle, and improve productivity.

The water bucket 10 , the water inlet pipe 7 and the water outlet pipe 11 are all made of aluminum material, and a plurality of cooling fins 13 are arranged on the outer surface.

By adopting the above technical scheme, the aluminum material not only has good corrosion resistance, but also has a good heat dissipation effect. Heat sinks 13 are arranged on the outer walls of the water bucket 10, the water inlet pipe 7 and the water outlet pipe 11, so as to further speed up and improve the heat dissipation effect. In this way, the liquid flowing out from the water outlet pipe 11 can dissipate heat well when flowing through the water inlet pipe 7, the water outlet pipe 11 and the bucket 10, and the cooled liquid can be recycled again without frequent replacement of the liquid, which is simple and convenient. Improve productivity.

The lower part of the bucket 10 is provided with an annular slope 14 that collects the water inside the bucket 10 towards the middle, the bottom of the annular slope 14 is provided with a dirt storage part 15, and the bottom end of the dirt storage part 15 is provided with a bottom cover 16. A cut-off valve 17 is provided in the middle of the dirt storage part 15.

By adopting the above technical scheme, when the liquid in the water bucket 10 is used for a long time, the impurities and dirt in the flow channel will flow into the water bucket 10 and settle down at the bottom of the water bucket 10. The dirt is collected centrally to the sewage storage part 15 in the middle, and the shut-off valve 17 in the middle of the sewage storage part 15 is in an open state during normal use, so that the dirt is concentrated at the bottom of the sewage storage part 15, and when sewage needs to be discharged, it is closed first The shut-off valve 17 and the bottom cover 16 are opened to discharge the dirt without wasting the clean water in the bucket 10, which is simple and convenient, and saves the waste of water resources.

Claims (4)

1. an injection mold, comprising successively stacked movable mold seat plate, push plate, movable mold, fixed mold and fixed mold seat plate, the contact surface of described movable mold and described fixed mold closure constitutes mold cavity, described The fixed mold is provided with a runner communicating with the cavity, and the runner runs through the fixed mold and the seat plate of the fixed mold. It is characterized in that: both the fixed mold and the movable mold are provided with annular The flow channel, the fixed mold and the movable mold are provided with symmetrically arranged liquid inlets and liquid outlets, and the liquid inlets and the liquid outlets are both connected to the annular flow channel, and the liquid inlet Both inlets are connected with water inlet pipes, the other end of the water inlet pipes opposite to the liquid inlet is provided with a pump, the connection between the water inlet pipes and the water outlet of the pump is provided with a main three-way joint, the inlet of the pump A water bucket is connected to the water outlet, and a water outlet pipe is connected to the liquid outlet. The other end of the water outlet pipe opposite to the liquid outlet is connected to the top of the water bucket. Equipped with secondary tee joints. 2. The injection mold according to claim 1, characterized in that: the planar size of the annular flow channel is one-third of the planar size of the fixed mold or the movable mold. 3. The injection mold according to claim 2, characterized in that: the water bucket, the water inlet pipe and the water outlet pipe are all made of aluminum material, and a plurality of cooling fins are provided on the outer surface. 4. The injection mold according to claim 3, characterized in that: the lower part of the bucket is provided with an annular slope for collecting the water inside the bucket towards the middle, the bottom of the slope is provided with a dirt storage part, and the storage The bottom of the dirt part is provided with a bottom cover, and the middle part of the dirt storage part is provided with a shut-off valve.