CN212498839U - Injection molding machine with high injection repetition precision - Google Patents
Injection molding machine with high injection repetition precision Download PDFInfo
- Publication number
- CN212498839U CN212498839U CN201921830105.4U CN201921830105U CN212498839U CN 212498839 U CN212498839 U CN 212498839U CN 201921830105 U CN201921830105 U CN 201921830105U CN 212498839 U CN212498839 U CN 212498839U
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- injection molding
- injection
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- molding machine
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Abstract
The utility model discloses an injection molding machine that injection repeatability is high, including the extruding machine body, the extruding machine body includes power device, screw rod and barrel, the headstock is connected with the barrel, be equipped with the screw rod in the barrel, the end of moulding plastics of screw rod is equipped with the check ring, barrel one end is equipped with the mouth of moulding plastics, the barrel top is equipped with the hopper, power device is including the hydraulic motor who connects gradually, the hydro-cylinder, the energy storage tank, the oil groove, the oil pump, motor and actuating system, hydraulic motor and screw rod connection are equipped with displacement sensor on the screw rod, be equipped with speed sensor on the motor, be equipped with pressure sensor on the oil pump, temperature sensor and. The controller of the injection molding machine compares the position of the moving part fed back by the displacement sensor with a set position, and converts the difference value of the position and the set position into a speed signal to control the motor to move towards the direction of eliminating deviation so as to meet the requirement of position control. Thereby the positioning precision of the control screw rod obviously improves the repeatability precision of the injection molding technology. Is more beneficial to the molding of high-precision products.
Description
Technical Field
The utility model relates to a relevant technical field of extruding machine, in particular to injection molding machine that injection repeatability is high.
Background
Injection molding is a method for producing and molding industrial products. The products are generally produced by rubber injection molding and plastic injection molding. The injection molding can be classified into injection molding and die casting. An injection molding machine is a main molding device for making thermoplastic plastics or thermosetting materials into plastic products with various shapes by using a plastic molding die, and the injection molding is realized by an injection molding machine and the die. The precision injection molding refers to an injection molding production method in which the dimensional accuracy of a plastic product produced by an injection molding machine can reach less than 0.01mm, and the size is usually 0.01-0.001 mm. The precision injection molding is mainly used for industrial and civil products such as aerospace, automobile parts, precision instruments, sports equipment, detection tools and the like.
At present, the types of the injection molding machines in China are various, wherein the most widely applied injection molding machines are general injection molding machines which have two types, namely a plunger type injection molding machine and a screw type injection molding machine, the screw type injection molding machine comprises a hopper and a plasticizing injection mechanism communicated with the hopper, the plasticizing injection mechanism comprises a charging barrel communicated with the hopper and provided with a nozzle opening, a screw rod axially arranged in the charging barrel and a driving mechanism driving the screw rod to rotate, in recent years, the precision requirements of various industries on plastic products are higher and higher, and the injection molding machines are particularly suitable for industries such as precision instruments, electronic instruments, communication engineering, automobile industry and the like. There are many factors that affect the precision of plastic products, including both molds and injection molding machines, and it is a prerequisite for injection molding machines that the injection repetition precision meets certain standards. The conventional injection precision can not meet the requirement of high-precision products generally, and the injection precision is improved by adopting a proportional valve or servo valve control technology in the current injection molding industry, but the valve control technology has higher cost and has higher requirement on the cleanliness of oil liquid of a machine.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an injection molding machine that injection repeatability is high adjusts the injection position through the displacement sensor on the tachometric transducer on the motor and the screw rod, still eliminates the influence of oil pump oil temperature to the injection position through temperature sensor and oil pump cooling device.
In order to solve the technical problem, the utility model discloses a technical scheme does:
the utility model provides an injection molding machine that injection repeatability is high, includes the extruding machine body, the extruding machine body includes power device, screw rod and barrel, the headstock with the barrel is connected, be equipped with in the barrel the screw rod, the end of moulding plastics of screw rod is equipped with the check ring, barrel one end is equipped with the mouth of moulding plastics, the barrel top is equipped with the hopper, power device is including the hydraulic motor, hydro-cylinder, energy storage tank, oil groove, oil pump, motor and the actuating system who connects gradually, hydraulic motor with the screw rod is connected, be equipped with displacement sensor on the screw rod, be equipped with speed sensor on the motor, be equipped with pressure sensor, temperature sensor and oil pump cooling device on the oil pump.
Preferably, the cylinder body injection molding end is provided with a mold mounting plate, the mold mounting plate is provided with a fixed mold and a movable mold, and the movable mold is connected with a movable mold cylinder through a connecting plate.
Preferably, the barrel comprises an inner barrel, a heating layer, a heat preservation and insulation layer and an outer barrel from inside to outside in sequence, and a heater is arranged in the heating layer.
Preferably, the heater is an inductive heater.
Preferably, the fixed die and the movable die are fixed to the die mounting plate by screws.
Preferably, the temperature sensor is a thermocouple sensor.
The utility model discloses injection molding machine that injection repeatability is high sets up pressure sensor, oil pump through setting up displacement sensor on the screw rod and is equipped with temperature sensor, and the injection molding machine controller carries out the comparison with the removal part position of displacement sensor feedback with setting for the position, transforms into speed signal with both differences and removes the control motor and move in order to reach the position control requirement towards eliminating the deviation direction. Thereby the positioning precision of the control screw rod obviously improves the repeatability precision of the injection molding technology. The injection quantity repetition precision during each injection is effectively improved, the weight of a product can be accurately controlled particularly for a precise electronic part with light gram weight, the injection position repetition precision can be obviously improved, and the high-precision product molding is more facilitated. Meanwhile, the problem of system damage caused by overlarge motor pressure is solved through detection of the pressure sensor. The controller detects the oil temperature change by the temperature sensor, and compensates the repeated precision change caused by the oil viscosity change by the oil pump cooling device.
Drawings
FIG. 1 is a schematic structural view of an injection molding machine with high injection repeatability;
FIG. 2 is a schematic structural view of a cylinder in the injection molding machine of the present invention with high injection repeatability;
FIG. 3 is a block diagram of a schematic diagram of an injection molding machine with high injection repeatability;
in the figure, 1-power device, 11-hydraulic motor, 12-oil cylinder, 13-energy storage tank, 14-oil groove, 15-oil pump, 151-oil pump cooling device, 16-motor, 17-driving device, 2-screw, 21-displacement sensor, 3-cylinder, 31-inner cylinder, 32-heating layer, 321-heater, 33-thermal insulation layer, 34-outer cylinder, 35-check ring, 36-injection port, 4-mould mounting plate, 41-fixed mould, 42-movable mould, 43-connecting plate, 44-movable mould cylinder, 5-hopper, 6-rotation speed sensor, 7-pressure sensor, 8-temperature sensor and 9-controller.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 3, an injection molding machine with high injection repetition accuracy includes an extruder body, the plastic extruding machine body comprises a power device 1, a screw rod 2 and a cylinder body 3, the power box is connected with the cylinder body 3, the screw rod 2 is arranged in the cylinder 3, the injection molding end of the screw rod 2 is provided with a check ring 35, the check ring 35 is used for preventing the backflow of the solution, one end of the cylinder body 3 is provided with an injection molding port 36, a hopper 5 is arranged above the cylinder body 3, the power device 1 comprises a hydraulic motor 11, an oil cylinder 12, an energy storage tank 13, an oil groove 14, an oil pump 15, a motor 16 and a driving device 17 which are connected in sequence, the hydraulic motor 11 is connected with the screw rod 2, a displacement sensor 21 is arranged on the screw rod 2, the motor 16 is provided with a rotating speed sensor 6, and the oil pump 15 is provided with a pressure sensor 7, a temperature sensor 8 and an oil pump cooling device 151.
The controller 9 compares the position of the moving part fed back by the displacement sensor 21 with the set position, and converts the difference between the two into a speed signal to control the motor 16 to move towards the direction of eliminating the deviation so as to meet the position control requirement. Thereby the positioning precision of the control screw 2 obviously improves the repeatability precision of the injection molding technology.
The system damage problem caused by the overlarge pressure of the motor 16 is avoided through the detection of the pressure sensor 7.
The controller 9 detects the oil temperature change by the temperature sensor 8, and compensates for repeated accuracy change caused by the oil viscosity change by the oil pump cooling device 151.
The injection molding end of the cylinder body 3 is provided with a mold mounting plate 4, the mold mounting plate 4 is provided with a fixed mold 41 and a movable mold 42, and the movable mold 42 is connected with a movable mold cylinder 44 through a connecting plate 43.
The barrel 3 sequentially comprises an inner barrel 31, a heating layer 32, a heat preservation layer 33 and an outer barrel 34 from inside to outside, and a heater 321 is arranged in the heating layer 32. The outer layer of the heating layer 32 is provided with the heat insulation layer 33, so that heat can be effectively prevented from being transferred to the outside, the utilization rate of heat is improved, the energy waste is avoided, and the energy-saving and environment-friendly effects are achieved.
The heater 321 is an inductive heater. Utilize the electromagnetic induction principle with the device of electric energy direct conversion heat energy, because the electromagnetic induction principle makes the barrel inner wall produce the accident and flows, realize the quick self-heating up of barrel.
The utility model discloses injection molding machine that injection repetition precision is high sets up displacement sensor 21, oil pump 15 through screw rod 2 on, sets up pressure sensor 7, oil pump 15 is equipped with temperature sensor 8, and injection molding machine controller 9 carries out the comparison with the moving part position of displacement sensor 21 feedback with setting for the position, with both differences transform into velocity signal and remove control motor 16 and move in order to reach the position control requirement towards eliminating deviation direction. Thereby the positioning precision of the control screw 2 obviously improves the repeatability precision of the injection molding technology. The injection quantity repetition precision during each injection is effectively improved, the weight of a product can be accurately controlled particularly for a precise electronic part with light gram weight, the injection position repetition precision can be obviously improved, and the high-precision product molding is more facilitated. Meanwhile, the problem of system damage caused by overlarge pressure of the motor 16 is solved through detection of the pressure sensor 7. The controller 9 detects the oil temperature change by the temperature sensor 8, and compensates for repeated accuracy change caused by the oil viscosity change by the oil pump cooling device 151.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921830105.4U CN212498839U (en) | 2019-10-28 | 2019-10-28 | Injection molding machine with high injection repetition precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921830105.4U CN212498839U (en) | 2019-10-28 | 2019-10-28 | Injection molding machine with high injection repetition precision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212498839U true CN212498839U (en) | 2021-02-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921830105.4U Expired - Fee Related CN212498839U (en) | 2019-10-28 | 2019-10-28 | Injection molding machine with high injection repetition precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212498839U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116619712A (en) * | 2023-07-17 | 2023-08-22 | 广东伊之密高速包装系统有限公司 | Shaft positioning system of injection molding machine and control method thereof |
| CN117245871A (en) * | 2023-09-27 | 2023-12-19 | 博创智能装备股份有限公司 | An injection molding machine control system with high position repeatability |
-
2019
- 2019-10-28 CN CN201921830105.4U patent/CN212498839U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116619712A (en) * | 2023-07-17 | 2023-08-22 | 广东伊之密高速包装系统有限公司 | Shaft positioning system of injection molding machine and control method thereof |
| CN116619712B (en) * | 2023-07-17 | 2023-10-17 | 广东伊之密高速包装系统有限公司 | Shaft positioning system of injection molding machine and control method thereof |
| CN117245871A (en) * | 2023-09-27 | 2023-12-19 | 博创智能装备股份有限公司 | An injection molding machine control system with high position repeatability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |