WO2011091592A1

WO2011091592A1 - Mini-type built-in high-pressure reciprocating oil cylinder

Info

Publication number: WO2011091592A1
Application number: PCT/CN2010/070398
Authority: WO
Inventors: 郭金阳
Original assignee: Guo Jinyang
Priority date: 2010-01-28
Filing date: 2010-01-28
Publication date: 2011-08-04

Abstract

A mini-type built-in high-pressure reciprocating oil cylinder includes an oil cylinder base (1), an oil cylinder body (2), an oil cylinder upper cover (3), a piston rotation stopper (4) and a piston rod (5). The piston rod includes a piston (7) and a push rod (8), and the piston is placed in a cavity (6). A rod portion (A) with polygonal cross section is placed at the upper end of the push rod, the piston rotation stopper is fixed on the upper end of the oil cylinder upper cover, a polygonal through-hole (B) is provided in the piston rotation stopper, and the rod portion (A) is fit closely with the through-hole (B). Two power oil ports (9, 9') are provided in the oil cylinder base; one such port is communicated with the lower portion of the cavity, the other such port is communicated with the upper portion of the cavity via a duct provided in the sidewall of the oil cylinder body. The device has simple construction, low production cost and easy operation.

Description

Mini built-in high pressure reciprocating cylinder

Technical field

The invention relates to a piston type cylinder and a functional module driven by a piston type cylinder.

Background technique

At present, the production process steps of thermoplastic plastic products mainly include: injection molding machine high temperature and high pressure to plasticize and melt the material, injection molding machine to inject the molten material into the cavity of the closed mold product, and the injection molding machine implements the molten state product in the mold cavity. The pressure is maintained, the product is cooled in the mold, the mold is opened, and the product is taken out in several steps.

In the production process of injection molding products, the following problems often occur:

1. The edge gate and edge lap gate of plastic products cannot be separated automatically from plastic products. The existing separation method is mainly after the product is taken out from the mold, manual/mechanical separation, the production cost is high, and it will affect The appearance of the product causes the product defect rate to rise.

2. For plastic products with holes or grooves, during the injection molding process, the molten material flows through the sides of the holes or grooves and joins at the back of the holes or grooves due to temperature and pressure. The reduction, the confluent materials can not be fully integrated, the weld line is generated in the plastic products, the weld line affects both the appearance of the product and the strength of the welded part; if the weld line appears in the cross section of the plastic product The part is very easy to break.

3. Due to the thermal expansion and contraction, the thicker parts of the plastic parts will produce shrinkage marks or hollow bubbles, which will affect the appearance and strength of the product.

4. In the plastic product, in the process of injecting the material, the injection pressure of the injection molding machine which is farther away from the pouring port is smaller, which causes a pressure difference in the cavity of the injection mold product, and the plastic product is caused by the pressure difference. Various defects (dimensional variations and deformations, etc.).

5. Poor exhaust of the injection mold will cause trapping or scorching on the plastic parts, affecting the appearance and strength of the product.

6. At present, the core-pulling mechanism used in the mold mostly uses the direction of the opening and closing of the mold, and the mechanical structure is converted into the movement direction required by the core-pulling module, which makes the mechanical structure difficult to realize. Complex, and then the required mold volume is large, the processing cost is high; if the traditional cylinder is used for core pulling, because the traditional cylinder is relatively large, the core pulling action in a narrow space is difficult to achieve.

The above problem can be solved by supplementing the appropriate portion of the injection mold core to provide appropriate pressure to cause the injection mold core to undergo appropriate changes during the injection molding process.

Summary of the invention The technical problem to be solved by the present invention is to provide a miniature built-in high-pressure reciprocating cylinder and a high-voltage driving function module which are simple in structure, low in cost and simple in operation.

The micro built-in high-pressure reciprocating cylinder of the invention comprises a cylinder base, a cylinder block, a cylinder upper cover, a piston rotation preventing member and a piston rod, wherein the cylinder block is fixedly mounted on the upper end of the cylinder base, the cylinder block and the cylinder base Forming a cavity, the upper cover of the cylinder is fixedly mounted on the upper end of the cylinder block, the piston rod includes a piston and a push rod, the push rod is fixedly connected to the upper end of the piston, the piston is disposed in the cavity, and the cavity is Divided into upper and lower parts, the upper end of the push rod passes through the upper end surface of the cylinder block and the upper cover of the cylinder, and the upper end of the push rod is provided with a partial rod body A having a polygonal cross section, and the piston rotation preventing member is fixedly mounted on The upper end of the upper cover of the cylinder is provided with a polygonal through hole B, and the rod body A is closely matched with the through hole B. The oil cylinder base is provided with two power oil interfaces, one of which is a power oil interface and a cavity. The lower part of the body is connected, and the other power oil port communicates with the upper part of the cavity through a pipe provided on the side wall of the cylinder block.

The micro-incorporated high-pressure reciprocating cylinder of the present invention, wherein the top end of the piston rod is provided with a connecting hole, and the connecting hole is provided with an internal thread.

The micro-integrated high-pressure reciprocating cylinder of the present invention, wherein the bottom of the cylinder base is provided with a cylindrical boss having a slightly smaller diameter, and the outer periphery of the cylindrical boss is provided with a cylinder locking fixing ring which is tightly matched with the cylinder, and the cylinder is locked. The mounting ring is provided with a plurality of mounting screw holes.

The high-voltage driving function module of the present invention comprises the above-mentioned micro built-in high-pressure reciprocating cylinder and a functional module, wherein the bottom of the functional module is fixedly connected with the top end of the piston rod, and the micro built-in high-pressure reciprocating cylinder is disposed on the side of the mold core of the injection mold. In the mold, the cylinder locking fixing ring is fixedly mounted on the mold, and the functional hole of the functional module passing through the injection mold core is in contact with the cavity of the injection mold core, the power oil interface and the high pressure The power oil source is connected.

The high-voltage driving function module of the present invention, wherein the bottom of the functional module is provided with a connecting fixing hole, the connecting fixing hole is provided with an internal thread, and the connecting hole connecting the fixing hole and the top end of the piston rod is provided with a headless screw. The headless screw fixedly connects the functional module to the piston rod.

The high-voltage driving function module of the present invention comprises the above-mentioned micro-built high-pressure reciprocating cylinder and the core-pulling module, wherein the bottom of the core-pulling module is fixedly connected with the top end of the piston rod, and the micro-built high-pressure reciprocating cylinder is disposed in the injection mold core In the side mold, the cylinder locking fixing ring is fixedly mounted on the mold, and the core pulling module passes through the functional hole of the injection mold core into the cavity of the injection mold core, and the power oil interface and the power oil interface The high-pressure power oil source is connected.

The high-voltage driving function module of the present invention, wherein the bottom of the core-pulling module is provided with a connecting fixing hole, the connecting fixing hole is provided with an internal thread, and the connecting hole of the connecting fixing hole and the top end of the piston rod is provided with a headless screw. The headless screw fixedly connects the core module to the piston rod.

The invention discloses an injection molding process for automatically separating edge gates and edge lap gates of thermoplastic plastic products, according to Next steps:

A. Opening a functional hole at the junction of the cavity of the injection mold core and the runner gate, and fixing the injection mold core to the mold;

B. The above high-voltage driving function module is fixedly mounted on the mold, so that the function module is located in the function hole, and the high-pressure power oil source is connected with the power oil port of the micro-built high-pressure reciprocating cylinder;

C The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core is closed, and the nozzle of the injection molding machine is connected with the flow gate and cavity of the injection mold core as a closed cavity, and then the injection molding machine will The molten material is injected into the cavity of the injection mold core at a certain pressure and speed, after being injected and held for a certain period of time;

D. Control the high-pressure power oil source to input the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder chamber, and push the piston rod to drive the function module to move to the cavity of the injection mold core and the runner gate connection, so that the function module will be the cavity The plastic product inside is separated from the runner gate;

E, cooling, demoulding.

The invention discloses an injection molding process for eliminating the weld line of a thermoplastic plastic product, and the following steps are as follows:

A. Opening a functional hole on the mold core of the injection mold, so that the function hole corresponds to the hole position or the groove on the plastic product, and the injection mold core is fixedly mounted on the mold;

C The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core is closed, and the nozzle of the injection molding machine is connected with the flow gate and cavity of the injection mold core as a closed cavity, and then the injection molding machine will The molten material is injected into the cavity of the injection mold core at a certain pressure and speed.

D. After the injection molding machine material is completed, before the pressure holding process begins, the high-pressure power oil source is controlled to input the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder chamber, and the piston rod is driven to drive the function module into the cavity of the injection mold core. Moving, causing the functional module to punch out the holes or grooves required by the product on the plastic product in the cavity;

E. After maintaining pressure for a certain period of time, cool and demould.

The invention relates to an injection molding process for eliminating shrinkage or hollow bubbles of a thermoplastic plastic product, according to the following steps:

A. Opening a functional hole on the mold core of the injection mold so that the functional hole corresponds to or is in the vicinity of the position of the plastic product which is likely to cause sink marks or hollow bubbles, and the mold core of the injection mold is fixedly mounted on the mold;

B. The above high-voltage driving function module is fixedly mounted on the mold, so that the function module is located in the function hole, and a certain reserved material area is left between the function module and the cavity, and the high-pressure power oil source and the micro-built-in are provided. The power oil port of the high pressure reciprocating cylinder is connected; c The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core is closed, and the nozzle of the injection molding machine is connected with the flow gate and the cavity of the injection mold core as a closed cavity, and then the injection molding machine will The molten material is injected into the cavity of the injection mold core at a certain pressure and speed, and is injection-molded by the injection molding machine and held for a certain time, after the pressure-maintaining process is completed;

D. Control the high-pressure power oil source to input the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder chamber, and push the piston rod to drive the function module to move into the cavity of the injection mold core, so that the function module will squeeze the material of the reserved material area. a portion that produces sink marks or hollow bubbles on the plastic product;

E, cooling, demoulding.

The invention relates to an injection molding process for adjusting the pressure difference in the cavity of an injection mold product, according to the following steps:

A. Opening a function hole on the mold core of the injection mold, so that the function hole corresponds to the part of the plastic product product which is deformed by the pressure difference, and the mold core of the injection mold is fixedly mounted on the mold;

B. The above high-voltage driving function module is fixedly mounted on the mold, so that the function module is located in the function hole, and a reserved material area is left between the function module and the cavity, and the high-pressure power oil source and the micro built-in high-pressure reciprocating cylinder The power oil interface is connected;

C The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core is closed, and the nozzle of the injection molding machine is connected with the flow gate and cavity of the injection mold core as a closed cavity, and then the injection molding machine will The molten material is injected into the cavity of the injection mold core at a certain pressure and speed, and is pressurized after injection and for a certain period of time, after the pressure maintaining process is completed;

D. Control the high-pressure power oil source to input the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder chamber, and push the piston rod to drive the function module to move into the cavity of the injection mold core, so that the function module will squeeze the material of the reserved material area. The plastic product is subjected to the lower injection pressure of the injection molding machine, so that the pressure is generated under the extrusion of the functional module, and the pressure of all parts of the whole product is relatively balanced;

E, cooling, demoulding.

The invention discloses an injection molding process for eliminating the trapping or scorching phenomenon of a thermoplastic plastic part product, according to the following steps:

A. A function hole is formed on the mold core of the injection mold, so that the function hole corresponds to a position on the plastic product which is prone to trapping or scorching, and the mold core of the injection mold is fixedly mounted on the mold;

C The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core is closed, and the nozzle of the injection molding machine is connected with the flow gate and cavity of the injection mold core as a closed cavity, and then the injection molding machine will The molten material is injected into the cavity of the injection mold core at a certain pressure and speed; D. After the material injection is completed, the trapped gas and charring phenomenon on the plastic product will appear in the reserved material area. Before the pressure holding process begins, the high-pressure power oil source is controlled to be input to the lower part of the micro-built high-pressure reciprocating cylinder chamber. The pressure oil pushes the piston rod to drive the function module to move into the cavity of the injection mold core, so that the function module squeezes the material in the reserved material area to the inside of the plastic product;

E. After a certain period of time and pressure, cool and demould.

The invention relates to an injection molding process for controlling the position of a weld line of a thermoplastic plastic product, according to the following steps:

A. Opening a function hole on the mold core of the injection mold, so that the function hole corresponds to the position of one of the runners, and the mold core of the injection mold is fixedly mounted on the mold;

C The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core is closed, and the nozzle of the injection molding machine is connected with the flow gate and the cavity of the injection mold core to form a closed cavity, and the injection molding machine material is injected. Before the start of the process, the high-pressure power oil source is controlled to input the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder chamber, and the piston rod is driven to move the function module to move in one of the runners, so that the function module can completely fill one of the runners or Partially closed, and then the molten material is injected into the cavity of the injection mold core by a molding machine at a certain pressure and speed;

D. After injection for a period of time through the injection molding machine, when the position where the weld line is to be generated is in the required position, the high-pressure power oil source is controlled to input the pressure oil to the upper part of the micro-high-pressure reciprocating cylinder chamber, and the piston rod is driven to drive the function module away The direction of the mold cavity of the injection mold moves, so that a runner gate completely or partially closed by the functional module is completely opened, and then all the material injection processes are completed;

E. After maintaining pressure for a certain period of time, cool and demould.

The invention discloses an injection molding process for simplifying the micro-core structure of a mold, and the following steps are as follows:

A. Opening a functional hole on the mold core of the injection mold, so that the function hole corresponds to the portion of the plastic product that needs to be cored, and the mold core of the injection mold is fixedly mounted on the mold;

B. The above high-voltage driving function module is fixedly mounted on the mold, so that the core-pulling module is located in the function hole, and the high-pressure power oil source is connected with the power oil port of the micro-built high-pressure reciprocating cylinder;

C The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core is closed, and the nozzle of the injection molding machine is connected with the runner gate and the cavity of the injection mold core to form a closed cavity, and the material is injected in the injection molding machine. Before the injection process, the high-pressure power oil source is controlled to input the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder chamber, and the piston rod is driven to move the core module to move into the cavity of the injection mold core, so that the core-pulling module enters the cavity. Then, the molten material is injected into the cavity of the injection mold core by a molding machine at a certain pressure and speed; D. After the material injection is completed, the pressure holding process is performed for a certain period of time;

E. After the pressure keeping process is completed, cool, control the high-pressure power oil source to input the pressure oil to the upper part of the micro-high-pressure reciprocating cylinder chamber, push the piston rod to drive the core-pulling module to exit the cavity, and return to the function hole to release the mold.

The polygonal rod body A of the piston rod of the micro high-pressure reciprocating cylinder of the invention cooperates with the polygonal through hole B of the piston rotation preventing member, so that the piston rod does not rotate relative to the cylinder block during the up and down movement; the power oil interface is disposed at the cylinder base On the seat, the cylinder is more convenient to install; the micro-integrated high-pressure reciprocating cylinder of the present invention can be installed at the appropriate position of the thermoplastic injection mold core to provide appropriate pressure for the injection mold core. The connecting hole provided on the piston rod of the micro built-in high-pressure reciprocating cylinder of the invention is for the purpose of installing the function module or the core-pulling module; the cylinder locking ring provided on the cylinder base is for fixing the cylinder tightly on the mold, so that the cylinder is High working accuracy and stability can be maintained even under high pressure conditions inside and outside.

The high-voltage driving function module of the invention comprises a functional module and a miniature built-in high-pressure reciprocating cylinder, and the functional module plays a corresponding role in the injection molding process under the pressure provided by the micro built-in high-pressure reciprocating cylinder.

Another high-voltage driving function module of the invention comprises a core-pulling module and a miniature built-in high-pressure reciprocating cylinder, and the core pulling operation is completed by the linear motion of the piston rod in the micro built-in high-pressure reciprocating cylinder, so that the whole core pulling mechanism is more simplified and the volume is smaller. The cost is lower.

The micro built-in high-pressure reciprocating cylinder and the high-voltage driving function module of the present invention will be further described below with reference to the accompanying drawings. DRAWINGS

Figure 1 is a front cross-sectional view of the micro-incorporated high-pressure reciprocating cylinder of the present invention;

2 is a top plan view of the micro built-in high pressure reciprocating cylinder of the present invention;

Figure 3 is a first use state diagram of the high voltage driving function module of the present invention (before starting);

Figure 4 is a first use state diagram of the high voltage driving function module of the present invention (after startup);

Figure 5 is a second state of use diagram of the high voltage driving function module of the present invention (before starting);

Figure 6 is a second state of use diagram of the high voltage driving function module of the present invention (after startup);

Figure 7 is a third state of use diagram of the high voltage driving function module of the present invention (before starting);

Figure 8 is a third state of use diagram of the high voltage driving function module of the present invention (after startup);

Figure 9 is a fourth state of use diagram of the high voltage driving function module of the present invention (before starting);

Figure 10 is a fourth state of use diagram of the high voltage driving function module of the present invention (after startup);

Figure 11 is a fifth state of use diagram of the high voltage driving function module of the present invention (before starting);

Figure 12 is a fifth state of use diagram of the high voltage driving function module of the present invention (after startup);

Figure 13 is a sixth state of use diagram of the high voltage driving function module of the present invention (before starting);

Figure 14 is a sixth state of use diagram of the high voltage driving function module of the present invention (after startup); Figure 15 is a schematic view of a plastic product;

Figure 16 is a seventh state of use diagram of the high voltage driving function module of the present invention (before starting);

Figure 17 is a seventh state of use diagram of the high voltage driving function module of the present invention (after startup);

Figure 18 is a diagram showing an eighth state of use of the high voltage driving function module of the present invention.

detailed description

As shown in FIG. 1 and FIG. 2, the miniature built-in high-pressure reciprocating cylinder of the present invention comprises a cylinder base 1, a cylinder block 2, a cylinder upper cover 3, a piston rotation preventing member 4 and a piston rod 5, and the cylinder block 2 is fixedly mounted on the cylinder The upper end of the base 1 forms a cavity 6 between the cylinder block 2 and the cylinder base 1, and the upper cylinder cover 3 is fixedly mounted on the upper end of the cylinder block 2 by bolts. The piston rod 5 includes a piston 7 and a push rod 8, and the push rod 8 - the body is formed at the upper end of the piston 7, the piston 7 is disposed in the cavity 6, and the cavity 6 is divided into upper and lower portions, and the upper end of the push rod 8 passes through the upper end surface of the cylinder block 2 and the cylinder upper cover 3, The top end of the piston rod 5 is provided with a connecting hole 11 , the connecting hole 11 is provided with an internal thread, and the upper end of the push rod 8 is provided with a partial rod body having a hexagonal cross section, and the piston rotation preventing member 4 is fixedly mounted on the cylinder upper cover 3 by bolts. The upper end, and the piston rotation preventing member 4 is provided with a hexagonal through hole B, the rod body A and the through hole B are closely matched, and the oil cylinder base 1 is provided with two power oil interfaces 9, 9', one of which is a power oil interface 9 Connected to the lower part of the cavity 6, another power oil interface 9' Conduit 2 provided on the cylinder block 10 through the side wall of the cavity 6 communicating portion. The bottom of the cylinder base 1 has a cylindrical boss 12 having a slightly smaller diameter. The outer periphery of the cylindrical boss 12 is provided with a cylinder lock retaining ring 13 which is tightly fitted thereto. The cylinder lock retaining ring 13 has a plurality of mounting screw holes 14 formed therein.

As shown in FIG. 3 and FIG. 4, the first use mode of the high-voltage driving function module of the present invention is used in an injection molding process for automatically separating edge gates and edge lap gates of thermoplastic plastic products. The utility model comprises a miniature built-in high-pressure reciprocating cylinder and a functional module 15, the bottom of the functional module 15 is provided with a connecting fixing hole 22, the connecting fixing hole 22 is provided with an internal thread, and the connecting hole 11 connecting the fixing hole 22 and the top end of the piston rod 5 is connected. A headless screw 23 is provided therein, and the headless screw 23 fixedly connects the functional module 15 to the piston rod 5. The micro built-in high-pressure reciprocating cylinder is disposed in the mold 17 on the side of the injection mold core 16 , and the cylinder lock fixing ring 13 is fixedly mounted on the mold 17 by bolts, and the function hole 15 of the functional module 15 passes through the injection mold core 16 and The cavity 24 of the injection mold core 16 is in contact with the functional module 15 on the side where the cavity 24 of the injection mold core 16 is connected to the runner gate 19, and the power oil ports 9, 9' are connected to the high-pressure power oil source. through.

The working process is as follows:

First, a function hole 18 is opened at the junction of the cavity 24 of the injection mold core 16 and the runner gate 19, and the injection mold core 16 is fixedly mounted on the mold 17; then the high-voltage driving function module is fixedly mounted on the mold 17. , the function module 15 is located in the function hole 18, and the high-pressure power oil source is connected with the power oil ports 9, 9' of the micro built-in high-pressure reciprocating cylinder; then the material is added into the injection molding machine, and the injection molding machine heats the material to melt the injection mold. The mold core 16 is closed, and the injection machine nozzle is connected with the flow channel gate 19 and the cavity 24 of the injection mold core 16 to form a closed cavity, and then the molten material is taken by the injection molding machine. The constant pressure and speed are injected into the cavity 24 of the injection mold core 16, and after injection and pressure holding, the high-pressure power oil source is controlled to input the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder chamber 6, and the piston rod 5 is driven to drive the function. The module 15 moves to the junction of the cavity 24 of the injection mold core 16 and the runner gate 19, so that the functional module 15 separates the plastic product in the cavity 24 from the runner gate 19; cooling, demoulding, The plastic product and the runner gate 19 are separately taken out, and the purpose of automatically separating the thermoplastic plastic product from the edge gate is achieved.

As shown in Fig. 5 and Fig. 6, the second type of use of the high-voltage driving function module of the present invention is used in an injection molding process for automatically separating the lower lap edge gate of a thermoplastic plastic product. The utility model comprises a miniature built-in high-pressure reciprocating cylinder and a function module 15. The bottom of the functional module 15 is provided with a connecting fixing hole 22, and the connecting fixing hole 22 is provided with an internal thread, and the connecting hole 11 connecting the fixing hole 22 and the top end of the piston rod 5 is connected. A headless screw 23 is provided therein, and the headless screw 23 fixedly connects the functional module 15 to the piston rod 5. The micro built-in high-pressure reciprocating cylinder is disposed in the mold 17 on the side of the injection mold core 16 , and the cylinder lock fixing ring 13 is fixedly mounted on the mold 17 by bolts, and the function hole 15 of the functional module 15 passes through the injection mold core 16 and The cavity 24 of the injection mold core 16 is in contact with the functional module 15 on the side where the cavity 24 of the injection mold core 16 is connected to the runner gate 19, and the power oil ports 9, 9' are connected to the high-pressure power oil source. through.

The working process is as follows:

First, a function hole 18 is opened at the junction of the cavity 24 of the injection mold core 16 and the runner gate 19, and the injection mold core 16 is fixedly mounted on the mold 17; then the high-voltage driving function module is fixedly mounted on the mold 17. , the function module 15 is located in the function hole 18, and the high-pressure power oil source is connected with the power oil port 9, 9 ' of the micro built-in high-pressure reciprocating cylinder; then the material is added into the injection molding machine, and the injection molding machine heats the material to melt the injection mold. The mold core 16 is closed, and the injection machine nozzle is connected with the flow channel gate 19 and the cavity 24 of the injection mold core 16 to form a closed cavity, and then the molten material is injected into the injection mold mold by a molding machine at a certain pressure and speed. In the cavity 24 of the core 16, after injection and pressure holding, the high-pressure power oil source is controlled to input the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder chamber 6, and the piston rod 5 is driven to drive the function module 15 to the injection mold core 16. The cavity 24 moves at the junction with the runner gate 19, so that the functional module 15 separates the plastic product in the cavity 24 from the runner gate 19; cooling, demoulding, molding Product gate 19 and runner portions are removed, to the thermoplastic plastic parts overlapping with the lower edge gates automatic separation purposes.

As shown in FIG. 7 and FIG. 8, the third type of use of the high-voltage driving function module of the present invention is used in the injection molding process for eliminating the weld line of the thermoplastic plastic product. The utility model comprises a miniature built-in high-pressure reciprocating cylinder and a function module 15. The bottom of the functional module 15 is provided with a connecting fixing hole 22, and the connecting fixing hole 22 is provided with an internal thread, and the connecting hole 11 connecting the fixing hole 22 and the top end of the piston rod 5 is connected. A headless screw 23 is provided therein, and the headless screw 23 fixedly connects the functional module 15 to the piston rod 5. The micro built-in high-pressure reciprocating cylinder is disposed in the mold 17 on the side of the injection mold core 16 , and the cylinder lock fixing ring 13 is fixed by bolts on the mold 17 on the side of the injection mold core 16 , and the functional module 15 passes through the injection mold Core 16 function The hole 18 is in contact with the cavity 24 of the injection mold core 16, the shape of the functional module 15 is matched with the shape of the hole or groove required in the plastic product, and the power oil port 9, 9' is in communication with the high pressure power oil source. .

The working process is as follows:

Firstly, a functional hole 18 is formed in the injection mold core 16, so that the functional hole 18 corresponds to a hole or a groove on the plastic product, and the injection mold core 16 is fixedly mounted on the mold 17; The group is fixedly mounted on the mold 17, so that the function module 15 is located in the function hole 18, and the high-pressure power oil source is connected with the power oil port 9, 9 ' of the micro built-in high-pressure reciprocating cylinder; then the material is added into the injection molding machine, the injection molding machine The material is melted by heating, the mold core 16 of the injection mold is closed, and the nozzle of the injection molding machine is connected with the runner gate 19 and the cavity 24 of the mold core 16 of the injection mold to form a closed cavity, and then the molten material is fixed by the injection molding machine. The pressure and speed are injected into the cavity 24 of the injection mold core 16, and after the injection molding machine material is completed, before the pressure holding process starts, the high pressure power oil source is controlled to input the pressure oil to the lower part of the micro high pressure reciprocating cylinder chamber 6 to push the pressure oil. The piston rod 5 drives the function module 15 to move into the cavity 24 of the injection mold core 16, so that the functional module 15 is punched out on the plastic product in the cavity 24. Holes or grooves required for the product; after a certain period of time, the film is cooled and demolded. The process of forming holes or grooves in the entire injection molding process is formed by punching the plastic product after the material injection is completed, so that the material does not flow from both sides of the hole or the groove to form a weld line.

As shown in Fig. 9 and Fig. 10, the fourth type of use of the high-voltage driving function module of the present invention is used in an injection molding process for eliminating shrinkage or hollow bubbles of thermoplastic plastic products. The utility model comprises a miniature built-in high-pressure reciprocating cylinder and a function module 15. The bottom of the functional module 15 is provided with a connecting fixing hole 22, and the connecting fixing hole 22 is provided with an internal thread, and the connecting hole 11 connecting the fixing hole 22 and the top end of the piston rod 5 is connected. A headless screw 23 is provided therein, and the headless screw 23 securely connects the functional module 15 to the piston rod 5. The micro built-in high-pressure reciprocating cylinder is disposed in the mold 17 on the side of the injection mold core 16 , and the cylinder lock fixing ring 13 is fixedly mounted on the mold 17 by bolts, and the functional module 15 passes through the functional hole 18 of the injection mold core 16 and is injection molded. The cavities 24 of the mold core 16 are in contact with each other, and the power oil ports 9, 9' are in communication with the high pressure power oil source.

The working process is as follows:

First, a functional hole 18 is formed in the injection mold core 16, so that the functional hole 18 corresponds to or is in the vicinity of the position on the plastic product which is likely to cause sink marks or hollow bubbles, and the injection mold core 16 is fixedly mounted on the mold 17 Then, the high-voltage driving function module is fixedly mounted on the mold 17, so that the function module 15 is placed in the function hole 18, and a certain reserved material area 25 is left between the function module 15 and the cavity 24, and the high voltage is applied. The power oil source is connected with the power oil port 9, 9 ' of the micro built-in high-pressure reciprocating cylinder; then the material is added into the injection molding machine, the injection machine is heated to melt the material, the injection mold core 16 is closed, and the injection molding machine nozzle and the injection mold are injected. The runner gate 19 and the cavity 24 of the core 16 communicate with each other as a closed cavity, and then the molten material is injected into the cavity 24 of the injection mold core 16 by an injection molding machine at a certain pressure and speed, and is injection molded by an injection molding machine. Keeping pressure for a certain period of time, after the pressure keeping process is completed, control the high-pressure power oil source to the lower part of the micro-high-pressure reciprocating cylinder chamber 6 The pressure oil is input, and the piston rod 5 is driven to move the function module 15 to move into the cavity 24 of the injection mold core 16, so that the function module 15 squeezes the material of the reserved material region 25 onto the plastic product to produce a sink mark or medium. The area of the air bubble; cooling, demoulding. The pressure is replenished at a position where the sink marks or hollow bubbles are easily generated, and is used to eliminate sink marks or hollow bubbles generated by thermal expansion and contraction.

As shown in Fig. 11 and Fig. 12, the fifth type of use of the high-voltage driving function module of the present invention is used in an injection molding process for adjusting the pressure difference in the cavity of the injection molding product. The utility model comprises a miniature built-in high-pressure reciprocating cylinder and a function module 15. The bottom of the functional module 15 is provided with a connecting fixing hole 22, and the connecting fixing hole 22 is provided with an internal thread, and the connecting hole 11 connecting the fixing hole 22 and the top end of the piston rod 5 is connected. A headless screw 23 is provided therein, and the headless screw 23 fixedly connects the functional module 15 to the piston rod 5. The micro built-in high-pressure reciprocating cylinder is disposed in the mold 17 on the side of the injection mold core 16 , and the cylinder lock fixing ring 13 is fixedly mounted on the mold 17 by bolts, and the functional module 15 passes through the functional hole 18 of the injection mold core 16 and is injection molded. The cavities 24 of the mold core 16 are in contact with each other, and the power oil ports 9, 9' are in communication with the high pressure power oil source.

The working process is as follows:

Firstly, a functional hole 18 is formed in the injection mold core 16, so that the functional hole 18 corresponds to a portion of the plastic product which is deformed by a pressure difference, and the injection mold core 16 is fixedly mounted on the mold 17; The module is fixedly mounted on the mold 17, so that the function module 15 is located in the function hole 18, and a reserved material area 25 is left between the function module 15 and the cavity 24, and the high-pressure power oil source and the micro-built high-pressure reciprocating cylinder are powered. The oil interface 9, 9' is connected; then the material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core 16 is closed, the injection nozzle and the injection gate of the injection mold core 16 are 19 The cavity 24 communicates with the closed cavity, and then the molten material is injected into the cavity 24 of the injection mold core 16 by the injection molding machine at a certain pressure and speed, and is pressed and pressurized for a certain period of time after the pressure maintaining process is completed; The high-pressure power oil source inputs the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder chamber 6, and pushes the piston rod 5 to drive the function module 15 to the cavity of the injection mold core 16 4 moves, so that the function module 15 squeezes the material of the reserved material area 25 onto the plastic product product to withstand the injection pressure of the injection molding machine, so that the pressure is generated under the extrusion of the functional module 15 to reach the entire product. The pressure on all parts is relatively balanced; cooling, demoulding. Since the pressure is replenished in the portion where the pressure is small in the cavity 24, the pressure in each portion of the cavity 24 is balanced, thereby eliminating the deformation of the plastic product caused by the pressure difference in the cavity 24.

As shown in FIG. 13 and FIG. 14, the sixth type of use of the high-voltage driving function module of the present invention is used in an injection molding process for eliminating trapping or scorching of thermoplastic plastic products. The utility model comprises a miniature built-in high-pressure reciprocating cylinder and a function module 15. The bottom of the functional module 15 is provided with a connecting fixing hole 22, and the connecting fixing hole 22 is provided with an internal thread, and the connecting hole 11 connecting the fixing hole 22 and the top end of the piston rod 5 is connected. A headless screw 23 is provided therein, and the headless screw 23 fixedly connects the functional module 15 to the piston rod 5. The micro built-in high-pressure reciprocating cylinder is disposed in the mold 17 on the side of the mold core 16 of the injection mold, and the cylinder lock is fastened. The retaining ring 13 is fixed to the mold 17 by bolts, and the functional surface of the functional module 15 is in contact with the cavity 24 of the injection mold core 16 through the functional hole 18 of the injection mold core 16, and the power oil ports 9, 9' and The high-pressure power oil source is connected.

The working process is as follows:

Firstly, a functional hole 18 is formed in the injection mold core 16, so that the functional hole 18 corresponds to a position on the plastic product which is prone to trapping or scorching, and the injection mold core 16 is fixedly mounted on the mold 17; The high-voltage driving function module is fixedly mounted on the mold 17, so that the function module 15 is located in the function hole 18, and a reserved material area 25 is left between the function module 15 and the cavity 24, and the high-pressure power oil source and the micro-built high-voltage reciprocating The hydraulic oil ports 9 and 9' of the oil cylinder are connected; the material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core 16 is closed, and the injection nozzle of the injection molding machine and the flow gate of the injection mold core 16 are 19 And the cavity 24 is connected to the closed cavity, and then the molten material is injected into the cavity 24 of the injection mold core 16 by the injection molding machine at a certain pressure and speed; after the material injection is completed, the trapped gas on the plastic product is The charring phenomenon will appear in the reserved material area 25, before the pressure holding process starts, the high pressure power oil source is controlled to input the pressure oil to the lower part of the micro high pressure reciprocating cylinder chamber 6 to push The plug rod 5 drives the function module 15 to move into the cavity 24 of the injection mold core 16, so that the function module 15 squeezes the material in the reserved material region 25 into the interior of the plastic product; after a certain period of time and pressure maintenance, cooling , demoulding. Since the trapped air is squeezed into the interior of the plastic product, there is no trapping or scorching on the surface of the plastic product to ensure the appearance of the product.

A plastic part product as shown in Fig. 15 is a keyboard area panel of a notebook computer. This product generally adopts a double pouring port in the injection molding process, as shown in the pouring port C and the pouring port D, if the material is injected During the process, when two pouring ports are fed at the same time, the welding wire will appear on the upper part of the plastic product, that is, the part with a small cross section, so that the part is easily broken, so that the welding wire does not appear in the upper part of the plastic product. , it is necessary to close or reduce the feeding amount of one of the pouring ports at the beginning of the material injection. When the material is filled with the upper part of the plastic product, the material is injected completely, and the material injection process is completed, so that the welding wire is produced in the plastic The lower part of the product reduces the impact of the weld line on the product.

As shown in Fig. 16 and Fig. 17, the seventh type of use of the high voltage driving function module of the present invention is used in an injection molding process for controlling the position of the weld line of a thermoplastic plastic product. The utility model comprises a miniature built-in high-pressure reciprocating cylinder and a function module 15. The bottom of the functional module 15 is provided with a connecting fixing hole 22, and the connecting fixing hole 22 is provided with an internal thread, and the connecting hole 11 connecting the fixing hole 22 and the top end of the piston rod 5 is connected. A headless screw 23 is provided therein, and the headless screw 23 fixedly connects the functional module 15 to the piston rod 5. The micro built-in high-pressure reciprocating cylinder is disposed in the mold 17 on the side of the injection mold core 16 , and the cylinder lock fixing ring 13 is fixedly mounted on the mold 17 by bolts, and the functional module 15 passes through the functional hole 18 of the injection mold core 16 and is injection molded. The cavity 24 of the mold core 16 is in contact with the functional module 15 on one side of one of the flow gates 19 of the injection mold core 16, and the power oil ports 9, 9' are in communication with the high pressure power oil source.

The working process is as follows: Firstly, a functional hole 18 is formed in the injection mold core 16, so that the functional hole 18 corresponds to the position of one of the flow gates 19, and the injection mold core 16 is fixedly mounted on the mold 17; then the high-voltage driving function module is fixed. Installed on the mold 17, the function module 15 is located in the function hole 18, and the high-pressure power oil source is connected with the power oil port 9, 9 ' of the micro built-in high-pressure reciprocating cylinder; the material is added into the injection molding machine, and the injection molding machine heats the material. Melting, the injection mold core 16 is closed, and the injection machine nozzle is connected with the flow gate 19 and the cavity 24 of the injection mold core 16 to form a closed cavity, and the high-pressure power oil source is controlled before the injection molding machine material injection process begins. The pressure oil is input to the lower portion of the micro-built high-pressure reciprocating cylinder chamber 6, and the piston rod 5 is driven to move the function module 15 to move into one of the runners 19, so that the function module 15 completely or partially closes one of the runners 19 Then, the molten material is injected into the cavity 24 of the injection mold core 16 by the injection molding machine at a certain pressure and speed; after injection through the injection molding machine for a period of time, when the weld line is After the position to be generated is in the required position, the high-pressure power oil source is controlled to input the pressure oil to the upper part of the micro-injection high-pressure reciprocating cylinder chamber 6, and the piston rod 5 is pulled to drive the function module 15 away from the cavity 24 of the injection mold core 16. Moving, a flow gate 19 that is completely or partially closed by the functional module 15 is completely opened, and then all the material injection processes are completed; after a certain period of time, the mold is cooled and demolded.

As shown in Fig. 18, the eighth type of use of the high-voltage driving function module of the present invention is used in an injection molding process for simplifying the micro-wicking structure of the mold. The method includes a micro built-in high-pressure reciprocating cylinder and a core-pulling module 21, and the bottom of the core-pulling module 21 is provided with a connecting fixing hole 22'. The connecting fixing hole 22' is provided with an internal thread, and the fixing hole 22' is connected with the top end of the piston rod 5. A headless screw 23 is disposed in the connecting hole 11, and the headless screw 23 fixedly connects the core pulling module 21 and the piston rod 5. The micro built-in high pressure reciprocating cylinder is disposed in the mold 17 on the side of the injection mold core 16 and the cylinder is locked and fixed. The ring 13 is fixedly mounted on the mold 17, and the core pulling module 21 passes through the functional hole 18 of the injection mold core 16 into the cavity 24 of the injection mold core 16, and the power oil interface 9, 9' is connected to the high-pressure power oil source. .

The working process is as follows:

Firstly, a functional hole 18 is formed in the injection mold core 16, so that the functional hole 18 corresponds to a portion of the plastic product that needs to be cored, and the injection mold core 16 is fixedly mounted on the mold 17; The group is fixedly mounted on the mold 17, so that the core pulling module 21 is located in the function hole 18, and the high-pressure power oil source is connected with the power oil port 9, 9 ' of the micro built-in high-pressure reciprocating cylinder; the material is added into the injection molding machine, the injection molding machine The material is melted by heating, the mold core 16 of the injection mold is closed, and the nozzle of the injection molding machine is connected with the runner gate 19 (not shown) of the mold core 16 of the injection mold and the cavity 24 to form a closed cavity, which is carried out in an injection molding machine. Before the material injection process, the high pressure power oil source is controlled to input the pressure oil to the lower part of the micro high-pressure reciprocating cylinder chamber 6, and the piston rod 5 is driven to move the core module 21 to the cavity 24 of the injection mold core 16, so that the core is pulled. The module 21 enters the cavity 24, and then the molten material is injected into the cavity 24 of the injection mold core 16 by the injection molding machine at a certain pressure and speed; after the material injection is completed, the pressure is maintained for a certain period of time. Sequence; after pressure holding step is completed, cooling, The high-pressure power oil source is controlled to input pressure oil to the upper part of the micro-high-pressure reciprocating cylinder chamber 6, and the piston rod 5 is pushed to drive the core-pulling module 21 to exit the cavity 24, and is returned to the functional hole 18 to release the mold.

The embodiments described above are merely illustrative of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and the present invention is not limited to the application in the scope of the injection mold, without departing from the spirit of the present invention. Various modifications and improvements of the technical solutions of the present invention should be made within the scope of the invention as defined by the appended claims.

Industrial applicability

The micro built-in high-pressure reciprocating cylinder and the high-voltage driving function module of the invention are mainly used to solve many problems arising in the production process of thermoplastic plastic parts, and have played an important role in improving product quality, and can be based on existing equipment. The transformation is carried out, so it has great market prospects and strong industrial applicability.

Claims

Rights request

1. A miniature built-in high-pressure reciprocating cylinder, comprising: a cylinder base (1), a cylinder block (2), a cylinder upper cover (3), a piston stop member (4) and a piston rod (5), The cylinder block (2) is fixedly mounted on the upper end of the cylinder base (1), and a cavity (6) is formed between the cylinder block (2) and the cylinder base (1), and the cylinder upper cover (3) is fixed. Installed at the upper end of the cylinder block (2), the piston rod (5) includes a piston (7) and a push rod (8), and the push rod (8) is fixedly coupled to the upper end of the piston (7), the piston (7) ) is disposed in the cavity (6), and divides the cavity (6) into upper and lower parts, and the upper end of the push rod (8) passes through the cylinder block (2) and the cylinder upper cover (3) The upper end surface of the push rod (8) is provided with a partial rod body A having a polygonal cross section, and the piston rotation preventing member (4) is fixedly mounted on the upper end of the cylinder upper cover (3), and the piston rotation preventing member (4) is provided There is a polygonal through hole B, the rod body A is closely matched with the through hole B, and the oil cylinder base (1) is provided with two power oil interfaces (9, 9'), One of the power oil ports (9) communicates with the lower part of the cavity (6), and the other power oil port (9') passes through the pipe (10) and the cavity (6) provided on the side wall of the cylinder block (2). Partially connected.

2. The miniature built-in high-pressure reciprocating cylinder according to claim 1, wherein: the top end of the piston rod (5) is provided with a connecting hole (11), and the connecting hole (11) is internally threaded.

3. The miniature built-in high-pressure reciprocating cylinder according to claim 2, wherein: a bottom of the cylinder base (1) is provided with a cylindrical boss (12) having a slightly smaller diameter, and the cylindrical boss (12) The outer periphery is provided with a cylinder locking fixing ring (13) which is tightly matched with the cylinder locking fixing ring (13) and a plurality of mounting screw holes (14).

A high-voltage driving function module, comprising: the micro built-in high-pressure reciprocating cylinder and the functional module (15) according to claim 3, the bottom of the functional module (15) and the piston rod (5) a top fixed connection, the micro built-in high-pressure reciprocating cylinder is disposed in a mold (17) on the side of the injection mold core (16), and the cylinder lock fixing ring (13) is fixedly mounted on the mold (17). The functional hole (18) of the functional module (15) passing through the injection mold core (16) is in contact with the cavity (24) of the injection mold core (16), the power oil interface (9, 9' ) is connected to a high-pressure power oil source.

The high-voltage driving function module according to claim 4, wherein: the bottom of the functional module (15) is provided with a connection fixing hole (22), and the connecting fixing hole (22) is provided with an internal thread. , a connecting head (22) and a connecting hole (11) at the top end of the piston rod (5) are provided with a headless screw (23), the headless screw (23) and the function module (15) and the piston rod (5) Fixed connection.

A high-voltage driving function module, comprising: the micro-incorporated high-pressure reciprocating cylinder and the core-pulling module (21) according to claim 3, the bottom of the core-pulling module (21) and the piston rod (5) a top fixed connection, the micro built-in high-pressure reciprocating cylinder is disposed in a mold (17) on the side of the injection mold core (16), the cylinder locks the retaining ring (13) Fixedly mounted on the mold (17), the core pulling module (21) passes through the functional hole (18) of the injection mold core (16) into the cavity (24) of the injection mold core (16), The power oil interface (9, 9') is in communication with a high pressure power oil source.

The high-voltage driving function module according to claim 6, wherein: the bottom of the core-pulling module (21) is provided with a connection fixing hole (22'), and the connection fixing hole (22') is provided. The internal thread, the connecting fixing hole (22') and the connecting hole (11) of the top end of the piston rod (5) are provided with a headless screw (23), and the headless screw (23) connects the core pulling module (21) with The piston rod (5) is fixedly connected.

8. An injection molding process for automatically separating edge gates and edge lap gates of thermoplastic molded products, according to the following steps:

A, a function hole (18) is opened at a joint between the cavity (24) of the injection mold core (16) and the runner gate (19), and the injection mold core (16) is fixedly mounted on the mold (17);

B. The high-voltage driving function module according to claim 5 is fixedly mounted on the mold (17), so that the function module (15) is located in the function hole (18), and the high-pressure power oil source and the micro-built high-pressure reciprocating cylinder are The power oil interface (9, 9') is connected;

C The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core (16) is closed, and the injection nozzle and the injection gate (19) and cavity of the injection mold core (16) are molded. Connected to a closed cavity, and then the molten material is injected into the cavity (24) of the injection mold core (16) by an injection molding machine at a certain pressure and speed, after being injected and held for a certain period of time;

D. Control the high-pressure power oil source to input the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder chamber (6), and push the piston rod (5) to drive the function module (15) to the cavity of the injection mold core (16) (24) Moving at the junction with the runner gate (19), causing the functional module (15) to separate the plastic product in the cavity (24) from the runner gate (19);

E, cooling, demoulding.

9. An injection molding process for eliminating the weld line of thermoplastic plastic parts, according to the following steps:

A. Open a function hole (18) on the injection mold core (16), so that the function hole (18) corresponds to the hole position or groove on the plastic product, and fix the injection mold core (16) to the mold. (17) on;

C The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core (16) is closed, and the injection nozzle and the injection gate (19) and cavity of the injection mold core (16) are molded. Connected to a closed cavity, and then the molten material is injected into the cavity (24) of the injection mold core (16) by an injection molding machine at a certain pressure and speed. D. After the injection molding machine material is completed, before the pressure holding process starts, control the high-pressure power oil source to input the pressure oil to the lower part of the micro-built high-pressure reciprocating cylinder chamber (6), and push the piston rod (5) to drive the function module (15). Injection molding core

The movement of the cavity (24) of (16) causes the functional module (15) to punch out the holes or grooves required for the product on the plastic product in the cavity (24);

E. After maintaining pressure for a certain period of time, cool and demould.

10. An injection molding process for eliminating shrinkage or hollow bubbles of thermoplastic plastic products, according to the following steps:

A. Open a function hole (18) on the injection mold core (16) so that the function hole (18) corresponds to or is in the vicinity of the position of the plastic product which is likely to cause sink marks or hollow bubbles, and the injection mold is molded. The core (16) is fixedly mounted on the mold (17);

B. Fixing the high-voltage driving function module according to claim 5 on the mold (17), so that the function module (15) is located in the function hole (18), and the function module (15) and the cavity (24) There is a certain reserved material area (25) between the high-pressure power oil source and the power oil port (9, 9') of the miniature built-in high-pressure reciprocating cylinder;

C The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core (16) is closed, and the injection nozzle and the injection gate (19) and cavity of the injection mold core (16) are molded. The connection is a closed cavity, and then the molten material is injected into the cavity (24) of the injection mold core (16) by a molding machine at a certain pressure and speed, and is injection-molded by the injection molding machine and held for a certain period of time. After the process is completed;

D. Control the high-pressure power oil source to input the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder chamber (6), and push the piston rod (5) to drive the function module (15) to the cavity of the injection mold core (16) (24) Move inside, so that the function module (15) squeezes the material of the reserved material area (25) to the part of the plastic product product where the sink mark or the hollow bubble is generated;

E, cooling, demoulding.

11. An injection molding process for adjusting the pressure difference in the cavity of an injection mold product, according to the following steps:

A. Open a function hole (18) on the injection mold core (16), so that the function hole (18) corresponds to the part of the plastic product that is deformed by the pressure difference, and the injection mold core (16) is fixedly mounted on the mold core (16). On the mold (17);

B. The high-voltage driving function module according to claim 5 is fixedly mounted on the mold (17), so that the function module (15) is located in the function hole (18), and the function module (15) and the cavity (24) A reserved material area (25) is left between the high-pressure power oil source and the power oil port (9, 9') of the miniature built-in high-pressure reciprocating cylinder;

C The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core (16) is closed, and the injection nozzle and the injection gate (19) and cavity of the injection mold core (16) are molded. The communication is a closed cavity, and then the molten material is injected into the cavity (24) of the injection mold core (16) by an injection molding machine at a certain pressure and speed, and is pressed and pressurized for a certain period of time, and is completed in the pressure maintaining process. Rear;

D. Control the high-pressure power oil source to input the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder chamber (6), and push the piston The rod (5) drives the function module (15) to move into the cavity (24) of the injection mold core (16), so that the function module (15) squeezes the material of the reserved material area (25) onto the plastic product. The part of the injection molding machine with low injection pressure is applied, so that the pressure is generated under the extrusion of the functional module (15), and the pressure of all parts of the whole product is relatively balanced;

E, cooling, demoulding.

12. An injection molding process for eliminating the trapping or scorching phenomenon of thermoplastic plastic parts, according to the following steps:

A. Open the function hole (18) on the injection mold core (16), so that the function hole (18) corresponds to the position on the plastic product that is prone to trapping or scorching, and the injection mold core (16) Fixedly mounted on the mold (17);

C The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core (16) is closed, and the injection nozzle and the injection gate (19) and cavity of the injection mold core (16) are molded. Connected to a closed cavity, and then the molten material is injected into the cavity (24) of the injection mold core (16) by an injection molding machine at a certain pressure and speed;

D. After the material injection is completed, the trapped gas and charring phenomenon on the plastic product will appear in the reserved material area (25). Before the pressure holding process begins, the high-pressure power oil source is controlled to the micro-built high-pressure reciprocating cylinder chamber. (6) The lower part of the input pressure oil, push the piston rod (5) to drive the function module (15) to move into the cavity (24) of the injection mold core (16), so that the function module (15) will reserve the material area ( 25) The material inside is extruded into the interior of the plastic product;

E. After a certain period of time and pressure, cool and demould.

13. An injection molding process for controlling the position of the weld line of a thermoplastic molded product, according to the following steps:

A. A function hole (18) is opened in the injection mold core (16), so that the function hole (18) corresponds to the position of one of the flow channel gates (19), and the injection mold core (16) is fixedly mounted on the mold. (17) on;

C The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core (16) is closed, and the injection nozzle and the injection gate (19) and cavity of the injection mold core (16) are molded. Connected to a closed cavity, before the start of the injection process of the injection molding machine, control the high-pressure power oil source to input the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder cavity (6), and push the piston rod (5) to drive the function module (15) Move to one of the runner gates (19) to cause the functional module (15) to completely or partially close one of the runner gates (19), and then inject the molten material into the injection molding at a certain pressure and speed by the injection molding machine. Inside the cavity (24) of the mold core (16); D. After a period of injection through the injection molding machine, after the position where the weld line is to be generated is in the required position, the high-pressure power oil source is controlled to input the pressure oil to the upper part of the micro-high-pressure reciprocating cylinder chamber (6), and the piston rod is pulled (5) Drive the function module (15) away from the cavity (24) of the injection mold core (16), so that a runner gate (19) that is completely or partially closed by the function module (15) is fully opened, and then completed. All material injection processes;

E. After maintaining pressure for a certain period of time, cool and demould.

14. An injection molding process that simplifies the mold core structure, according to the following steps:

A. Open a function hole (18) on the injection mold core (16), so that the function hole (18) corresponds to the part of the plastic product that needs to be cored, and the injection mold core (16) is fixedly mounted on the mold. (17) on;

B. The high-voltage driving function module according to claim 7 is fixedly mounted on the mold (17), so that the core-pulling module (21) is located in the function hole (18), and the high-pressure power oil source and the micro-built high-pressure reciprocating cylinder The power oil interface (9, 9') is connected;

C The material is added into the injection molding machine, the injection molding machine is heated to melt the material, the injection mold core (16) is closed, and the injection nozzle and the injection gate (19) and cavity of the injection mold core (16) are molded. The connection is a closed cavity. Before the injection molding machine performs the material injection process, the high-pressure power oil source is controlled to input the pressure oil to the lower part of the micro-high-pressure reciprocating cylinder chamber (6), and the piston rod (5) is driven to drive the core module (21). Moving into the cavity (24) of the injection mold core (16), allowing the core module (21) to enter the cavity (24), and then injecting the molten material into the injection mold at a certain pressure and speed by the injection molding machine Inside the cavity (24) of the core (16);

D. After the material injection is completed, the pressure holding process is performed for a certain period of time;

E. After the pressure keeping process is completed, cool, control the high-pressure power oil source to input the pressure oil to the upper part of the micro-built high-pressure reciprocating cylinder chamber (6), and push the piston rod (5) to drive the core-pulling module (21) to exit the cavity (24). ), return to the function hole (18), demoulding.