CN207607074U - A kind of injection device of injection molding machine - Google Patents

Abstract

The utility model provides an injection device of an injection molding machine, which belongs to the technical field of machinery. The injection device of this injection molding machine, the injection device includes a material storage cylinder 1 and a material storage cylinder 2, a piston 1 is arranged in the material storage cylinder 1, a piston rod 1 is provided at the rear end of the material storage cylinder 1, and one end of the piston rod 1 and the piston One connection, the other end is connected with the hydraulic cylinder one, the piston two is arranged in the storage cylinder two, the piston rod two is arranged at the rear end of the storage cylinder two, one end of the piston rod two is connected with the piston two, and the other end of the piston rod two It is connected with the hydraulic cylinder 2, the front end of the storage cylinder 1 is connected with the front end of the storage cylinder 2 through the injection pipe 2, the barrel head is connected with the injection pipe 2 through the injection pipe 1, the valve 4 is set on the injection pipe 1, and the injection pipe 2 Valve 3 is located between storage cylinder 1 and injection pipe 1 on the top, valve 5 is located between storage cylinder 2 and injection pipe 1 on injection pipe 2, injection pipe 3 is provided at the front end of storage cylinder 2, and injection pipe Three are provided with valve six. The utility model has the advantage of high injection efficiency.

Description

Injection device of an injection molding machine

technical field

The utility model belongs to the technical field of machinery and relates to an injection device of an injection molding machine.

Background technique

Generally speaking, injection molding is a molding process that puts plastic and other molding materials into the barrel of an injection molding machine, and then heats the molding materials to melt them and press them into the molding mold to form plastic products.

During the injection molding operation, the screw rotates to drive the raw materials in the barrel to be injected into the molding mold. After the product in the molding mold is demoulded, the screw injects the raw materials into the molding mold again and repeats. The efficiency of the screw conveying raw materials is low. Injection efficiency is low. When high-flow injection is required, it can only be realized by increasing the output power and rotational speed of the screw drive motor, and the power configuration requirements of the drive pump are relatively high.

Utility model content

The purpose of this utility model is to solve the above-mentioned problems in the existing technology, and propose an injection device for an injection molding machine. The technical problem to be solved by this utility model is: to provide high injection efficiency, and to realize the use of a motor with a small power to drive the screw Injection device for injection molding machine to achieve large flow injection.

The purpose of the utility model can be achieved through the following technical solutions: an injection device for an injection molding machine, the injection molding machine includes a barrel and a screw arranged in the barrel, the discharge end of the barrel is provided with a barrel head, the The injection device includes a material storage cylinder 1, a material storage cylinder 2, a hydraulic cylinder 1 and a hydraulic cylinder 2, a piston 1 is arranged in the inner cavity of the material storage cylinder 1, and a piston is slidably connected to the rear end of the material storage cylinder 1. Rod one, one end of the piston rod one is located in the inner cavity of the storage cylinder one and the end is connected to the piston one, the other end of the piston rod one is located outside the storage cylinder one and the end is connected to the piston of the hydraulic cylinder one Rod connection, the inner chamber of the storage cylinder 2 is provided with a piston 2, the rear end of the storage cylinder 2 is slidably connected with a piston rod 2, and one end of the piston rod 2 is located in the inner chamber of the storage cylinder 2 And the end is connected to the piston two, the other end of the piston rod two is located outside the storage cylinder two and the end is connected to the piston rod of the hydraulic cylinder two, the front end of the storage cylinder one passes through the injection pipe two and the storage cylinder The front end of the second is connected, the barrel head is connected with the second injection pipe through the first injection pipe, the first valve is provided on the first injection pipe, and the second valve is arranged between the first storage tank and the first injection pipe Valve three, the injection pipe two is provided with a valve five between the storage tank two and the injection pipe one, the front end of the storage tank two is provided with an injection pipe three, and the other end of the injection pipe three is provided with a nozzle , the injection pipe three is provided with a valve six, the nozzle communicates with the molding die, and the valve five is a one-way valve.

In the above-mentioned injection device of an injection molding machine, the injection pipe 2 is located between the storage tank 2 and the injection pipe 1, and a stirring chamber is also provided, and a rotating shaft is arranged in the stirring chamber, and the outer wall of the stirring chamber A motor is arranged on it, one end of the rotating shaft is located outside the stirring chamber and the end is connected to the output shaft of the motor through transmission, and blades are arranged on the rotating shaft.

In the above-mentioned injection device of an injection molding machine, the electric heating wire 2 and the rock wool layer are arranged outside the storage tank 1, and the electric heating wire 2 is located between the outer wall of the storage tank 1 and the rock wool layer.

In the above-mentioned injection device of an injection molding machine, a water tank and a water pump are also included. A cooling pipe is also arranged on the outer wall of the storage tank 1, and the water inlet 2 of the cooling pipe is communicated with the water inlet pipe through a water inlet branch pipe. The water inlet pipe communicates with the water outlet of the water pump, the water inlet of the water pump communicates with the bottom of the water tank through a pipeline, and the water outlet 2 of the cooling pipe communicates with the water tank through the return pipe 2.

In the above-mentioned injection device of an injection molding machine, a cooling water pipeline is arranged in the barrel head, and the water inlet one of the cooling water pipeline communicates with the water inlet pipe, and a valve is arranged between the water inlet one and the water inlet pipe Second, the water inlet branch pipe is provided with a valve one, and the water outlet one of the cooling water pipeline communicates with the water tank through the water return pipe one.

In the above-mentioned injection device of an injection molding machine, an electric heating wire 1 is arranged on the outer wall of the barrel head.

In the above-mentioned injection device of an injection molding machine, a rock wool layer is arranged outside the storage tank 2 .

Compared with the prior art, the utility model has the advantages of high injection efficiency and the ability to drive the screw with a small power motor to realize large flow injection and the like.

Description of drawings

Fig. 1 is a structural sectional view of the utility model.

Fig. 2 is an enlarged view of A in Fig. 1 .

In the figure: 1, barrel; 2, screw; 3, barrel head; 3a, cooling water pipe; 3b, water outlet 1; 3c, water inlet 1; 3d, electric heating wire 1; 4, storage tank 1; 4a, piston 1; 4b, cooling pipe; 4c, electric heating wire 2; 4d, piston rod 1; 4e, water outlet 2; 4f, water inlet 2; 5, rock wool layer; 6, hydraulic cylinder 1; 7, water tank ; 7a, return pipe one; 7b, return pipe two; 8, water pump; 8a, water inlet pipe; 8b, water inlet branch pipe; 9, valve one; 10, valve two; 11, valve three; 12, valve four; 13, Valve five; 14, injection pipe one; 15, injection pipe two; 16, injection pipe three; 16a, nozzle; 17, valve six; 18, forming mold; 19, storage cylinder two; 19a, piston two; 19b, piston Rod two; 20, hydraulic cylinder two; 21, stirring chamber; 22, rotating shaft; 23, motor; 24, blade.

Detailed ways

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.

As shown in Figures 1 to 2, an injection device for an injection molding machine, the injection molding machine includes a barrel 1 and a screw 2 arranged in the barrel 1, and the discharge end of the barrel 1 is provided with a barrel head 3 , is characterized in that, the injection device includes storage cylinder one 4, storage cylinder two 19, hydraulic cylinder one 6 and hydraulic cylinder two 20, and the inner cavity of the storage cylinder one 4 is provided with a piston one 4a, so The rear end of the accumulator cylinder-4 is slidably connected with a piston rod-4d, one end of the piston rod-4d is located in the inner chamber of the accumulator cylinder-4 and the end is connected with the piston-4a, and the piston rod-4d The other end of the storage cylinder is located outside the storage cylinder one 4 and the end is connected with the piston rod of the hydraulic cylinder one 6. The inner cavity of the storage cylinder two 19 is provided with a piston two 19a, and the rear end of the storage cylinder two 19 is The second piston rod 19b is slidingly connected, and one end of the second piston rod 19b is located in the inner cavity of the second storage cylinder 19 and the end is connected with the second piston 19a, and the other end of the second piston rod 19b is located at the second storage cylinder 19 The outer end is connected with the piston rod of the hydraulic cylinder two 20, the front end of the storage cylinder one 4 is communicated with the front end of the two injection tube 15 and the storage cylinder two 19, and the barrel head 3 is connected through the injection tube one 14 and the front end of the two storage cylinder 19. Injection pipe two 15 communicates, and described injection pipe one 14 is provided with valve four 12, and described injection pipe two 15 is provided with valve three 11 between storage cylinder one 4 and injection pipe one 14, and described injection pipe two Valve 5 13 is arranged between storage cylinder 2 19 and injection pipe 14 on 15, injection pipe 3 16 is provided at the front end of said storage cylinder 2 19, and nozzle 16a is provided at the other end of said injection pipe 3 16 , the injection pipe three 16 is provided with a valve six 17, the nozzle 16a communicates with the molding die 18, and the valve five 13 is a one-way valve.

Working material of the present utility model is such:

Situation 1: Valve 3 11 is closed, valve 4 12 and valve 5 13 are opened, the drive motor drives the screw to rotate, the raw material in barrel 1 is injected into storage cylinder 2 19 after passing through injection pipe 1 14 and injection pipe 2 15, When the raw material in storage cylinder 2 19 reaches the specified amount, valve 6 17 is opened, hydraulic cylinder 2 20 pushes piston 2 19a to move to the front end of storage cylinder 2 19, and the raw material in storage cylinder 2 19 is injected by injection pipe 3 16 Transported to the forming mold 18, then the raw material needs to be cooled and formed in the forming mold 18, the valve six 17 is closed, the driving motor continues to drive the screw to rotate, the raw material in the barrel 1 continues to be injected into the storage cylinder two 19, and the hydraulic cylinder two 20 retracts and ensures that the pressure in the storage cylinder 2 19 is constant to achieve pressure maintenance. After the product in the forming mold 18 is demoulded, the valve 6 17 is opened, and the hydraulic cylinder 2 20 pushes the piston 2 19 again to inject raw materials into the forming mold 18 , during the cooling and molding process of the raw material in the molding die 18, the screw 2 can continue to transport the raw material to the storage tank 2 19, and store the raw material in the storage tank 2 19 to prepare for the raw material injection molding, and in addition, through the hydraulic cylinder 2 20 Directly push the raw materials stored in the storage cylinder 2 19 to inject into the molding die 18, which can realize rapid injection with large flow rate, save time and improve work efficiency.

Situation 2: In this state, storage cylinder 1 4 is added compared to situation 1. During the process of cooling and forming raw materials in molding mold 18, valve 6 17 is closed, valve 3 11, valve 4 12 and valve 5 13 are opened, and screws are 2 The raw material in the machine barrel 1 is transported to storage tank 1 4 and storage tank 2 19 for storage. During injection, valve 6 17 is opened, and when the raw material is injected into the molding mold 18, hydraulic cylinder 1 6 and hydraulic cylinder 2 20 Simultaneously elongate, the raw material in the machine barrel 1, the raw material stored in the storage tank one 4 and the storage tank two 19 are injected into the forming mold 18 at the same time, which can realize high-flow rapid injection, save time and improve work efficiency.

Specifically, the injection pipe two 15 is also provided with a stirring chamber 21 between the storage tank two 19 and the injection pipe one 14, and a rotating shaft 22 is arranged in the stirring chamber 21, and the outer wall of the stirring chamber 21 A motor 23 is arranged on it, and one end of the rotating shaft 22 is located outside the stirring chamber 21 and the end is in drive connection with the output shaft of the motor 23 , and a blade 24 is arranged on the rotating shaft 22 .

The motor 23 can drive the rotating shaft 22 to rotate, and the blade 24 can stir the raw materials in the stirring chamber 21 to make the raw materials more uniform.

When the material storage tank-4 and machine barrel 1 are all transporting raw materials in the mixing chamber 21, there may be a certain difference in the temperature of the raw materials in the material storage tank-4 and the machine barrel 1. After the stirring of the blades 24 in the mixing chamber 21, Can make the temperature of the raw material that enters into the stock tank two 19 be uniform.

Specifically, an electric heating wire 2 4c and a rock wool layer 5 are arranged outside the storage cylinder 1 4 , and the electric heating wire 2 4c is located between the outer wall of the storage cylinder 1 4 and the rock wool layer 5 .

The electric heating wire 2 4c can heat the material storage tank 1 4, so that the raw material temperature in the material storage tank 1 4 will not decrease.

Specifically, the injection device also includes a water tank 7 and a water pump 8. A cooling pipe 4b is also provided on the outer wall of the storage tank 1 4. The water inlet 4f of the cooling pipe 4b passes through the water inlet branch pipe 8b and the water inlet. The water pipe 8a communicates, the water inlet pipe 8a communicates with the water outlet of the water pump 8, the water inlet of the water pump 8 communicates with the bottom of the water tank 7 through the pipeline, and the water outlet two 4e of the cooling pipe 4b passes through the water return pipe two 7b and Water tank 7 communicates.

After the water pump 8 is turned on, the water in the water tank 7 is transported to the cooling pipe 4b, and after the heat exchange between the cooling pipe 4b and the storage tank 4, the water takes away the heat from the storage tank 4 and finally returns to the water tank 7 , so as to realize the adjustment of the temperature of the raw material located in the storage tank one 4, so that the raw material stored in the storage tank one 4 will not be too high.

Specifically, the barrel head 3 is provided with a cooling water pipeline 3a, the water inlet 3c of the cooling water pipeline 3a communicates with the water inlet pipe 8a, and a valve is arranged between the water inlet 3c and the water inlet pipe 8a 210, the water inlet branch pipe 8b is provided with a valve one 9, and the water outlet one 3b of the cooling water pipe 3a communicates with the water tank 7 through the return water pipe one 7a.

After the water pump 8 is turned on, the water in the water tank 7 is transported to the cooling water pipe 3a, and after the heat exchange between the cooling water pipe 3a and the barrel head 3, the water takes away the heat from the barrel head 3 and finally returns to the water tank 7 , so as to realize the adjustment of the temperature of the raw material in the barrel head 3 .

Specifically, an electric heating wire-3d is arranged on the outer wall of the barrel head 3 .

The electric heating wire-3d can heat the barrel head 3 to adjust the temperature of the raw material in the barrel head 3 . Through the cooperation of the cooling water pipeline 3a and the electric heating wire-3d, the raw material of the barrel head 3 can be kept within a limited temperature range all the time.

Specifically, a rock wool layer 5 is arranged outside the storage cylinder 2 19 .

The rock wool layer 5 can play the role of heat preservation. In the process of storing materials in the material storage tank 2 19, the temperature of the raw materials in the material storage tank 2 19 will not drop too fast, ensuring that the temperature in the material storage tank 2 19 The temperature of the raw material can meet the needs of injection molding.

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.

Although this article uses 1, barrel; 2, screw; 3, barrel head; 3a, cooling water pipe; 3b, water outlet one; 3c, water inlet one; 3d, electric heating wire one; 4, storage Material cylinder one; 4a, piston one; 4b, cooling pipe; 4c, electric heating wire two; 4d, piston rod one; 4e, water outlet two; 4f, water inlet two; 5, rock wool layer; 6, hydraulic cylinder one ;7, water tank; 7a, return pipe one; 7b, return pipe two; 8, water pump; 8a, water inlet pipe; 8b, water inlet branch pipe; 9, valve one; 10, valve two; 11, valve three; 12, valve Four; 13, valve five; 14, injection pipe one; 15, injection pipe two; 16, injection pipe three; 16a, nozzle; 17, valve six; 18, forming mold; 19, storage cylinder two; 19a, piston two ; 19b, piston rod two; 20, hydraulic cylinder two; 21, stirring chamber; 22, rotating shaft; 23, motor; 24, blades and other terms, but the possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model.

Claims (6)

1. a kind of injection device of injection molding machine, the injection molding machine includes the screw rod (2) of machine barrel (1) and setting in machine barrel (1), institute The discharge end for stating machine barrel (1) is provided with barrel head (3), which is characterized in that the injection device includes accumulator one (4), storing Cylinder two (19), hydraulic cylinder one (6) and hydraulic cylinder two (20) are provided with piston one (4a), institute in the inner cavity of the accumulator one (4) The rear end for stating accumulator one (4) slidably connects piston rod one (4d), and one end of the piston rod one (4d) is located at accumulator one (4) in inner cavity and end and piston one (4a) connection, the other end of the piston rod one (4d) are located at accumulator one (4) outside And end is connected with the piston rod of hydraulic cylinder one (6), and piston two (19a) is provided in the inner cavity of the accumulator two (19), The rear end of the accumulator two (19) slidably connects piston rod two (19b), and one end of the piston rod two (19b) is located at storing In the inner cavity of cylinder two (19) and end and piston two (19a) connection, the other end of the piston rod two (19b) are located at accumulator Two (19) are outside and end is connected with the piston rod of hydraulic cylinder two (20), and the front end of the accumulator one (4) passes through injection-tube two (15) it being connected to the front end of accumulator two (19), the barrel head (3) is connected to by injection-tube one (14) with injection-tube two (15), It is provided with valve four (12) on the injection-tube one (14), is located at accumulator one (4) and injection-tube on the injection-tube two (15) Be provided with valve three (11) between one (14), be located on the injection-tube two (15) accumulator two (19) and injection-tube one (14) it Between be provided with valve five (13), the front end of the accumulator two (19) is provided with injection-tube three (16), the injection-tube three (16) Other end be provided with nozzle (16a), be provided with valve six (17) on the injection-tube three (16)；

Stir chamber (21), institute are additionally provided on the injection-tube two (15) between accumulator two (19) and injection-tube one (14) It states rotation in stir chamber (21) and is provided with shaft (22), be provided with motor (23) on the outer wall of the stir chamber (21), described turn One end of axis (22) is located at stir chamber (21) outside and the output shaft of end and motor (23) is sequentially connected, on the shaft (22) It is provided with blade (24).

2. a kind of injection device of injection molding machine according to claim 1, which is characterized in that the accumulator one (4) peripheral hardware It is equipped with electric heating wire two (4c) and rock wool layer (5), the electric heating wire two (4c) is located at the outer wall and rock wool layer of accumulator one (4) (5) between.

3. a kind of injection device of injection molding machine according to claim 2, which is characterized in that further include water tank (7) and water pump (8), cooling tube (4b) is additionally provided on the outer wall of the accumulator one (4), the water inlet two (4f) of the cooling tube (4b) is logical It crosses water inlet pipe (8b) to be connected to water inlet pipe (8a), the water inlet pipe (8a) is connected to the water outlet of water pump (8), the water pump (8) water inlet is connected to by pipeline with the bottom of water tank (7), and the water outlet two (4e) of the cooling tube (4b) passes through return pipe Two (7b) are connected to water tank (7).

4. a kind of injection device of injection molding machine according to claim 3, which is characterized in that setting in the barrel head (3) There are cooling water pipeline (3a), the water inlet one (3c) of the cooling water pipeline (3a) to be connected to water inlet pipe (8a), the water inlet It is provided with valve two (10) between one (3c) and water inlet pipe (8a), valve one (9) is provided on the water inlet pipe (8b), it is described The water outlet one (3b) of cooling water pipeline (3a) is connected to by return pipe one (7a) with water tank (7).

5. a kind of injection device of injection molding machine according to claim 1, which is characterized in that the outer wall of the barrel head (3) On be provided with electric heating wire one (3d).

6. a kind of injection device of injection molding machine according to claim 1, which is characterized in that the accumulator two (19) peripheral hardware It is equipped with rock wool layer (5).