Batching and feeding system for raw materials of thin film production line

Abstract

The utility model discloses a film production line raw material batching and feeding system, which comprises a belt weigher, a receiving box and an upper computer, the receiving box receives raw materials conveyed by the belt weigher, the receiving box is communicated with a pneumatic conveying pipe, one end of the pneumatic conveying pipe is provided with a fan, the right end of the pneumatic conveying pipe is connected with a buffer stock bin, and the buffer stock bin is connected with a feeding hopper. A first discharging motor is installed at the lower end of the temporary storage bin, the belt weigher is used for weighing PA raw materials and calculating the conveying amount of the PA raw materials, the belt weigher can control the conveying amount of the PA raw materials and feed the conveying amount back to the upper computer, the conveying amount of the belt weigher is made to be the same as the set amount, the functions of intelligent warehousing, feeding, precise batching and intelligent feeding of the PA raw materials are achieved, and the production efficiency is improved. The batching and feeding system is high in automation degree, and one-key start and stop and unattended operation can be realized; the control precision is high, full-automatic online weighing and accurate batching are achieved, and high stability of product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of film production, in particular to a material batching and feeding system for raw materials of a film production line. Background Art

[0002] Films are made from a variety of raw materials. Usually, before melting, the required raw materials are introduced into a mixer for thorough stirring to ensure that the various raw materials are evenly mixed. The current raw material batching and feeding process of the film production line requires precise control of the proportion and weight of the batching and feeding.

[0003] In the related technology, most of the raw materials for the film are fed by an air-locked feeding system. When the air-locked feeding system transports PA raw materials, the particle size, shape, humidity and other factors of the PA raw materials will affect the transportation efficiency of the air-locked feeding system. When the PA raw materials are continuously transported, deviations in the feeding amount are likely to occur. When it is necessary to proportion PA raw materials and other raw materials, the air-locked feeding system will affect the precise proportioning and metering of materials, thereby affecting the product quality and the stability of the production line. Utility Model Content

[0004] The utility model aims to provide a material batching and feeding system for raw materials of a film production line to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a material batching and feeding system for a film production line, comprising a belt scale, a receiving box and a host computer, wherein the receiving box receives the raw materials transported by the belt scale, the receiving box is connected to a pneumatic conveying pipe, and a fan is installed at one end of the pneumatic conveying pipe;

[0006] The belt scale can realize quantitative feeding control of PA raw materials through quantitative value setting and weighing detection. When other materials are mixed with PA raw materials, precise control can be achieved to ensure high stability of film product quality.

[0007] The right end of the pneumatic conveying pipe is connected to a buffer bin, and the lower end of the buffer bin is equipped with a first unloading motor, which can actively discharge the PA raw material in the buffer bin to prevent the PA raw material from falling freely;

[0008] The belt scale, the fan, and the first unloading motor are electrically connected to the host computer, so that the host computer can be used to electrically control the operating state of the batching and feeding system and set the required parameters.

[0009] Furthermore, an air-locking screw conveyor feeder is provided at the discharging end of the belt scale, the discharging port of the air-locking screw conveyor feeder is connected to the receiving box, and the air-locking screw conveyor feeder is electrically connected to the host computer. When the PA raw materials need to be transported to a high place, the air-locking screw conveyor feeder is used for transportation.

[0010] Furthermore, a high material level alarm is installed on the upper surface of the cache silo, and a low material level alarm is installed on the side of the cache silo. The high material level alarm and the low material level alarm are electrically connected to the host computer to realize automatic replenishment of the cache silo, which can run automatically and achieve the purpose of unattended operation.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The belt scale weighs the PA raw materials and calculates the delivery volume of the PA raw materials. When the low material level alarm detects that the PA raw materials in the buffer silo are reduced to the set threshold, the host computer controls the second unloading motor, belt scale, air-locking screw feeder, and fan to automatically deliver the PA raw materials in the storage silo into the buffer silo until the high material level alarm sends a full signal to the host computer.

[0013] (2) The belt scale can control the delivery volume of PA raw materials and feed it back to the host computer, so that the delivery volume of the belt scale is the same as the set volume, realizing the functions of intelligent warehousing, loading, precise batching and intelligent feeding of PA raw materials. The batching and feeding system has a high degree of automation, can achieve one-button start and stop, and unattended operation; the control accuracy is high, and the fully automatic online weighing and precise batching ensure the high stability of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] In the figure: 1. Storage bin; 2. Second unloading motor; 3. Belt scale; 4. Air-locking screw feeder; 5. Receiving box; 6. Inclined pipe; 7. Fan; 8. Pneumatic conveying pipe; 9. High material level alarm; 10. Buffer bin; 11. Low material level alarm; 12. First unloading motor; 13. Host computer. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Example:

[0018] See also Figure 1The utility model provides a technical solution: a material batching and feeding system for a film production line, comprising a belt scale 3, a receiving box 5 and a host computer 13, wherein the receiving box 5 receives the raw materials transported by the belt scale 3, the receiving box 5 is connected to a pneumatic conveying pipe 8, and a fan 7 is installed at one end of the pneumatic conveying pipe 8;

[0019] The belt scale 3 enables the batching and feeding system to have the function of precise batching control. It realizes the intelligent quantitative feeding control of PA raw materials through quantitative value setting, weighing detection, speed detection, flow calculation, flow control and other means. At the same time, the belt scale and PA raw material contact are made of 304 stainless steel to ensure the safety and pollution-free of PA raw materials.

[0020] The right end of the pneumatic conveying pipe 8 is connected to a buffer bin 10, and a first unloading motor 12 is installed at the lower end of the buffer bin 10;

[0021] The belt scale 3, the fan 7, the first unloading motor 12 are electrically connected to the host computer 13;

[0022] The host computer 13 enables the batching and feeding system to have automatic batching and feeding functions, detects the amount of PA raw materials inside the buffer silo 10, and starts batching according to the current recipe. The PA raw materials automatically detect the current flow through the belt scale 3, and feed back to the host computer 13 to adjust the belt scale rate so that the instantaneous flow of the belt scale 3 is the same as the set flow; when the high material level alarm signal of the buffer silo is detected, the batching and feeding system automatically shuts down; the PA raw materials are fed intelligently and accurately, and the operation of the batching and feeding system is automatically controlled.

[0023] In this embodiment, if Figure 1 As shown, the discharging end of the belt scale 3 is provided with an air-locking screw conveyor feeder 4, the discharging port of the air-locking screw conveyor feeder 4 is connected with the receiving box 5, the air-locking screw conveyor feeder 4 is electrically connected with the host computer 13, the air-locking screw conveyor feeder 4 can be placed at an angle, and the air-locking screw conveyor feeder 4 can be used according to needs to transport PA raw materials to high places.

[0024] In this embodiment, if Figure 1 As shown, a storage bin 1 is installed above the belt scale 3, and a second unloading motor 2 is installed at the outlet of the storage bin 1, and the second unloading motor 2 is electrically connected to the host computer 13. The storage bin 1 can pre-store PA raw materials, and the second unloading motor 2 delivers the PA raw materials to the belt scale 3 when working. When the second unloading motor 2 does not rotate, it can prevent the storage bin 1 from leaking.

[0025] In this embodiment, if Figure 1As shown, a high material level alarm 9 is installed on the upper surface of the buffer silo 10, and a low material level alarm 11 is installed on the side of the buffer silo 10, and the high material level alarm 9 and the low material level alarm 11 are electrically connected to the host computer 13. The high material level alarm 9 and the low material level alarm 11 detect the remaining amount of PA raw materials in the buffer silo 10, and the host computer 13 controls the operation of the batching and feeding system based on the detection results of the high material level alarm 9 and the low material level alarm 11.

[0026] In this embodiment, if Figure 1 As shown, an inclined pipe 6 is installed at the outlet of the receiving box 5 , and the inclined pipe 6 is connected to the pneumatic conveying pipe 8 . The fan 7 accelerates the air flow in the pneumatic conveying pipe 8 to extract the PA raw material in the receiving box 5 through the inclined pipe 6 .

[0027] Specifically, when in use, the low material level alarm 11 detects the remaining amount of PA raw materials in the buffer silo 10. When the remaining amount of PA raw materials is lower than the detection threshold of the low material level alarm 11, the low material level alarm 11 sends a material distribution signal to the upper computer 13. The upper computer 13 and the set parameters control the second unloading motor 2, the belt scale 3, the air-locking screw conveyor feeder 4, and the fan 7 to work. The second unloading motor 2 rotates to send the PA raw materials in the storage bin 1 to the belt scale 3. The belt scale 3 controls the delivery of the PA raw materials. The PA raw material is delivered to the air-locking screw conveyor feeder 4, the air-locking screw conveyor feeder 4 pushes the PA raw material to fall into the receiving box 5, the fan 7 accelerates the air flow, the PA raw material falls into the pneumatic conveying pipe 8, and the air flow drives the PA raw material into the buffer silo 10, the high material level alarm 9 detects the amount of PA raw material in the buffer silo 10, when the PA raw material reaches the threshold of the high material level alarm 9, the upper computer 13 controls the batching and feeding system to stop working, which can be transported automatically with high batching and feeding accuracy.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A material batching and feeding system for a film production line, characterized in that: It comprises a belt scale (3), a receiving box (5) and a host computer (13), wherein the receiving box (5) receives the raw materials transported by the belt scale (3), the receiving box (5) is connected to a pneumatic conveying pipe (8), and a fan (7) is installed at one end of the pneumatic conveying pipe (8); The right end of the pneumatic conveying pipe (8) is connected to a buffer bin (10), and a first unloading motor (12) is installed at the lower end of the buffer bin (10); The belt scale (3), the fan (7), the first unloading motor (12) and the host computer (13) are electrically connected.

2. A material batching and feeding system for a film production line according to claim 1, characterized in that: The discharge end of the belt scale (3) is provided with an air-locking screw conveyor feeder (4), the discharge port of the air-locking screw conveyor feeder (4) is connected to a receiving box (5), and the air-locking screw conveyor feeder (4) is electrically connected to a host computer (13).

3. The material batching and feeding system for a film production line according to claim 1, characterized in that: A material storage bin (1) is installed above the belt scale (3), a second unloading motor (2) is installed at the outlet of the material storage bin (1), and the second unloading motor (2) is electrically connected to a host computer (13).

4. The material batching and feeding system for a film production line according to claim 1, characterized in that: A high material level alarm (9) is installed on the upper surface of the buffer silo (10), and a low material level alarm (11) is installed on the side of the buffer silo (10), and the high material level alarm (9) and the low material level alarm (11) are electrically connected to a host computer (13).

5. The material batching and feeding system for a film production line according to claim 1, characterized in that: The outlet of the receiving box (5) is provided with an inclined pipe (6), and the inclined pipe (6) is connected to the pneumatic conveying pipe (8).

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