CN219522859U

CN219522859U - Automatic batching system of injection molding machine

Info

Publication number: CN219522859U
Application number: CN202320450005.9U
Authority: CN
Inventors: 仲兆岩; 王金和; 潘久洋; 王进军
Original assignee: Jiangsu Xingda Intelligent Manufacturing Co ltd
Current assignee: Jiangsu Xingda Intelligent Manufacturing Co ltd
Priority date: 2023-03-10
Filing date: 2023-03-10
Publication date: 2023-08-15
Anticipated expiration: 2033-03-10

Abstract

The utility model discloses an automatic batching system of an injection molding machine, which comprises a main material box, an auxiliary material box, a weighing hopper, a first material conveying mechanism and a PLC (programmable logic controller); the first material conveying mechanism comprises a first variable frequency motor, a first material feeding auger and a first material conveying pipe, wherein a plurality of groups of first material feeding augers are arranged in the first material conveying mechanism according to the requirements of the material mixing varieties, the first material feeding augers in the first material conveying mechanism are respectively arranged in a main material box and an auxiliary material box, an output shaft of the first variable frequency motor is connected with the first material feeding augers in a coaxial manner, an inlet of the first material conveying pipe is connected with a discharge end of the first material feeding augers, and an outlet of the first material conveying pipe is connected with a weighing hopper; the weighing hopper is provided with a weighing sensor I, and the PLC is respectively and electrically connected with the weighing sensor I and the variable frequency motor I. The utility model is one-key starting whole-course automation, various raw materials are accurately proportioned, and the batching quantity and batching accuracy in unit time are improved.

Description

Automatic batching system of injection molding machine

Technical Field

The utility model relates to the technical field of injection molding machines, in particular to an automatic batching system of an injection molding machine.

Background

With the wide use of various plastic products, the use of injection molding machines, which are the main molding equipment for manufacturing thermoplastic or thermosetting plastics into plastic products of various shapes by using a plastic molding die, can heat the plastics, apply high pressure to the molten plastics, and make the molten plastics be ejected to fill the die cavity.

At present, most injection molding machines adopt a manual batching mode, the automation degree is low, various raw materials are difficult to accurately proportion, and the batching amount in unit time is limited by manpower.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides an automatic batching system of an injection molding machine, which is fully automatic and accurately proportioned by starting one key.

In order to solve the technical problems, the utility model is realized by adopting the following scheme:

the utility model provides an automatic batching system of an injection molding machine, which comprises a main material box, an auxiliary material box, a weighing hopper, a first material conveying mechanism and a PLC (programmable logic controller); the first material conveying mechanism comprises a first variable frequency motor, a first material feeding auger and a first material conveying pipe, wherein a plurality of groups of first material feeding augers are arranged in the first material conveying mechanism according to the requirements of the material mixing varieties, the first material feeding augers in the first material conveying mechanism are respectively arranged in a main material box and an auxiliary material box, an output shaft of the first variable frequency motor is connected with the first material feeding augers in a coaxial manner, an inlet of the first material conveying pipe is connected with a discharge end of the first material feeding augers, and an outlet of the first material conveying pipe is connected with a weighing hopper; the weighing hopper is provided with a weighing sensor I, and the PLC is respectively and electrically connected with the weighing sensor I and the variable frequency motor I.

Preferably, the main material box is arranged as a three-grid box body, and the auxiliary material box is arranged as a four-grid box body.

Preferably, the stirring machine further comprises a stirring machine and a second conveying mechanism, wherein the second conveying mechanism comprises a second variable-frequency motor, a second feeding auger and a second conveying pipe, the second feeding auger is arranged in the weighing hopper, an output shaft of the second variable-frequency motor is coaxially connected with the second feeding auger, an inlet of the second conveying pipe is connected with a discharge end of the second feeding auger, and an outlet of the second conveying pipe is connected with the stirring machine.

Preferably, the output shaft of the first variable frequency motor is coaxially connected with the first feeding auger, and the output shaft of the second variable frequency motor is coaxially connected with the second feeding auger through double cross universal joints.

Preferably, the first feeding auger and the second feeding auger are both made of 304 stainless steel.

Preferably, the weighing hopper and the stirrer are both provided with a discharging valve and a switching valve cylinder, and the switching valve cylinder is electrically connected with the PLC.

Preferably, the mixer further comprises a mixing barrel, and an inlet of the mixing barrel is connected with an outlet of the mixer.

Preferably, the mixing bucket is provided with a second weighing sensor for detecting the amount of stored material in the mixing bucket.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, a plurality of groups of material conveying mechanisms are adopted to convey main materials and auxiliary materials to the weighing hopper, each material is precisely proportioned through the PLC, the variable frequency motor and the weighing sensor, a manual material proportioning mode is abandoned, the automation degree is high, and the material proportioning amount in unit time is improved.

Drawings

FIG. 1 is a schematic diagram of an automatic batching system of an injection molding machine according to the present utility model;

FIG. 2 is a schematic structural view of a main material box and a first material conveying mechanism in an automatic batching system of an injection molding machine according to the present utility model;

FIG. 3 is a schematic structural view of an auxiliary box and a first feeding mechanism in an automatic batching system of an injection molding machine according to the present utility model;

fig. 4 is a schematic structural diagram of a weighing hopper and a second feeding mechanism in an automatic batching system of an injection molding machine according to the embodiment of the present utility model;

FIG. 5 is a schematic structural diagram of a first feeding mechanism and a second feeding mechanism in an automatic batching system of an injection molding machine according to the present utility model;

FIG. 6 is a schematic diagram of a weighing hopper in an automatic batching system of an injection molding machine according to the present utility model;

FIG. 7 is a schematic diagram of a mixer in an automatic batching system of an injection molding machine according to the present utility model;

FIG. 8 is a schematic diagram of a mixing bowl in an automatic batching system of an injection molding machine according to the present utility model;

in the figure: 1. a main feed box; 2. an auxiliary material box; 3. weighing hopper; 4. a stirrer; 5. a mixing barrel; 6. a first material conveying mechanism; 7. a second material conveying mechanism; 8. double cross universal joint coupling; 31. a discharging valve I; 32. switching a valve cylinder I; 41. a discharging valve II; 42. switching a valve cylinder II; 61. a variable frequency motor I; 62. feeding a first auger; 63. a first conveying pipe; 71. a variable frequency motor II; 72. a feeding auger II; 73. and a second material conveying pipe.

Description of the embodiments

The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1 to 8, the embodiment provides an automatic batching system of an injection molding machine, which comprises a main material box 1, an auxiliary material box 2, a weighing hopper 3, a stirrer 4, a mixing barrel 5, a first material conveying mechanism 6, a second material conveying mechanism 7, a first weighing sensor, a second weighing sensor and a PLC controller. The automatic batching system of the injection molding machine has high automation degree and accurate proportioning of various raw materials, and improves the batching amount in unit time.

Specifically, the main material box 1 and the auxiliary material box 2 are respectively arranged into a three-grid box body and a four-grid box body and are used for storing main materials and auxiliary materials of different types. The first conveying mechanism 6 comprises a first variable frequency motor 61, a first feeding auger 62 and a first conveying pipe 63, an output shaft of the first variable frequency motor 61 is coaxially connected with the first feeding auger 62, an inlet of the first conveying pipe 63 is connected with a discharge end of the first feeding auger 62, an outlet of the first conveying pipe 63 is connected with the weighing hopper 3, the first conveying mechanism 6 is provided with seven groups, the first feeding auger 62 in the first three groups of conveying mechanisms 6 is respectively arranged in three-grid boxes of the main material box 1, the maximum proportioning amount of the three main materials can reach 70kg once, the feeding augers 62 in the other four groups of conveying mechanisms 6 are respectively arranged in four-grid boxes of the auxiliary material box 2, the four auxiliary materials with smaller proportioning amount are respectively weighed, and the proportioning amount is as low as 0.1kg once.

The weighing hopper 3 is provided with a first weighing sensor (not shown in the figure), and the PLC (not shown in the figure) is respectively and electrically connected with the first weighing sensor and the first variable frequency motor 61; accurate weighing and batching principle: the preparation method comprises the steps of dividing the preparation into two steps, namely high-speed feeding weighing and accurate feeding weighing, wherein the raw material is fed to a primary preparation amount during high-speed feeding weighing, and the accurate feeding weighing is fed to the accurate feeding amount, and the primary preparation amount and the accurate feeding amount = the preparation amount; when the high-speed feeding and weighing is performed, the first variable frequency motor 61 drives the first feeding auger 62 to rotate at a high speed to perform conveying and weighing of one ingredient (comprising a main ingredient and auxiliary ingredients), after the first weighing sensor detects that the ingredient reaches a preset initial ingredient amount, a signal is sent to the PLC, the PLC receives the signal and then sends the signal to the frequency converter of the first variable frequency motor 61, the frequency converter reduces the frequency of the first variable frequency motor 61 to the corresponding frequency of the preset accurate feeding amount (the preset accurate feeding amount is 2% -5% of the required ingredient amount of the ingredient) of the ingredient, the feeding is performed until the weighing sensor detects that the required ingredient amount of the main ingredient reaches, at the moment, the weighing sensor sends the signal to the PLC, the PLC sends the signal to the first variable frequency motor 61 to stop feeding, and the motor frequency is low, the motor basically has no inertia, the motor is ensured to stop in an emergency, and thus the accurate ingredient is realized. In addition, the weighing hopper 3 is provided with a first discharging valve 31 and a first switching valve cylinder 32, the first switching valve cylinder 32 is electrically connected with the PLC, the first switching valve cylinder 32 is controlled by the PLC to move so as to open and close the first discharging valve 31, and excessive ingredients or ingredients which do not need stirring are discharged out of the weighing hopper 3.

The second material conveying mechanism 7 comprises a second variable frequency motor 71, a second feeding auger 72 and a second material conveying pipe 73, the second feeding auger 72 is arranged in the weighing hopper 3, an output shaft of the second variable frequency motor 72 is coaxially connected with the second feeding auger 72, an inlet of the second material conveying pipe 73 is connected with a discharge end of the second feeding auger 72, an outlet of the second material conveying pipe 73 is connected with the stirrer 4, and the second material conveying mechanism 7 is responsible for conveying the weighed and accurately proportioned ingredients into the stirrer 4 for stirring according to a set stirring time; the entry of mixer 4's exit linkage blending vat 5, mixer 4 is provided with blowing valve two 41 and switch valve cylinder two 42, switch valve two 42 cylinder and PLC controller electricity are connected, control switch valve cylinder two 42 motion by the PLC controller and realize opening, close blowing valve two 41, fall into blending vat 5 with the synthetic material after the stirring, blending vat 5 is used for depositing the synthetic material after the stirring, and blending vat 5 is provided with weighing sensor two (not shown in the figure) for detect the volume of depositing the material in the blending vat 5, guarantee not appear the condition of synthetic material supply deficiency.

The output shaft of the variable frequency motor I61 is connected with the feeding auger I62 and the output shaft of the variable frequency motor II 71 is connected with the feeding auger II 72 through the double cross universal joint coupling 8, so that the angles of the augers in the main material box 1, the auxiliary material box 2 or the weighing hopper 3 can be changed to obtain the optimal feeding posture; the first feeding auger 62 and the second feeding auger 72 are made of 304 stainless steel, and are high in strength, long in service life and suitable for conveying various ingredients.

It should be understood that what is not described in detail in this embodiment is prior art.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.

Claims

1. An automatic batching system of an injection molding machine is characterized by comprising a main material box, an auxiliary material box, a weighing hopper, a first material conveying mechanism and a PLC controller; the first material conveying mechanism comprises a first variable frequency motor, a first material feeding auger and a first material conveying pipe, wherein a plurality of groups of first material feeding augers are arranged in the first material conveying mechanism according to the requirements of the material mixing varieties, the first material feeding augers in the first material conveying mechanism are respectively arranged in a main material box and an auxiliary material box, an output shaft of the first variable frequency motor is connected with the first material feeding augers in a coaxial manner, an inlet of the first material conveying pipe is connected with a discharge end of the first material feeding augers, and an outlet of the first material conveying pipe is connected with a weighing hopper; the weighing hopper is provided with a weighing sensor I, and the PLC is respectively and electrically connected with the weighing sensor I and the variable frequency motor I.

2. The automatic batching system of the injection molding machine according to claim 1, wherein the main material box is a three-grid box body, and the auxiliary material box is a four-grid box body.

3. The automatic batching system of the injection molding machine according to claim 1, further comprising a stirrer and a second conveying mechanism, wherein the second conveying mechanism comprises a second variable frequency motor, a second feeding auger and a second conveying pipe, the second feeding auger is arranged in the weighing hopper, an output shaft of the second variable frequency motor is coaxially connected with the second feeding auger, an inlet of the second conveying pipe is connected with a discharge end of the second feeding auger, and an outlet of the second conveying pipe is connected with the stirrer.

4. The automatic batching system of the injection molding machine according to claim 3, wherein the output shaft of the first variable frequency motor is connected with the first feeding auger and the output shaft of the second variable frequency motor is connected with the second feeding auger through double cross universal joint couplings.

5. The automatic batching system of injection molding machine according to claim 3, wherein the first feeding auger and the second feeding auger are made of 304 stainless steel.

6. The automatic batching system of the injection molding machine according to claim 3, wherein the weighing hopper and the stirrer are provided with a discharging valve and a switching valve cylinder, and the switching valve cylinder is electrically connected with the PLC.

7. The automatic batching system of injection molding machine according to claim 3, further comprising a mixing bowl, an inlet of the mixing bowl being connected to an outlet of the mixer.

8. The automatic batching system of injection molding machine according to claim 7, wherein the mixing bowl is provided with a second weighing sensor for detecting the amount of stored material in the mixing bowl.