CN219705789U - Film blowing machine meter gram weight closed loop double weighing control device - Google Patents

Abstract

The utility model relates to a meter gram weight closed-loop double-weighing control device of a film blowing machine. According to the utility model, two weighing hoppers are matched to realize closed-loop weighing, each gram of raw materials is weighed according to times, the main controller is used for collecting twice weighing data, each time data is operated with the other acquired metering data, the operation result is compared with the weighing data of the first weighing sensor, errors are automatically compensated until the accuracy is achieved, the control accuracy of the film and the weight is realized, and the whole device is optimized and improved on the basis of the prior art, has a simple structure, is convenient to improve and optimize, has strong practicability, and is beneficial to popularization and application.

Description

Film blowing machine meter gram weight closed loop double weighing control device

Technical Field

The utility model relates to the technical field of meter gram weight control of film blowing machines, in particular to a meter gram weight closed-loop double-weighing control device of a film blowing machine.

Background

The film blowing machine is used for heating and melting plastic particles and then blowing the plastic particles into a film, and mainly comprises an extruder, a machine head, a die head, a cooling device, a bubble stabilizing frame, a herringbone plate, a traction roller, a coiling device and other structures, wherein the film thickness directly influences the film quality, the key point is that the film meter gram weight per unit length is ensured to be constant, the film texture uniformity is ensured to be insufficient for manufacturers, the cost control is also needed to be considered, the condition that the film per unit length is heavy or light is not allowed to occur, and the high requirement is put on the meter gram weight precision of the film. The feeding mechanism of the existing film blowing machine basically realizes feeding through a hopper by utilizing the gravity action of particles, so that the accurate control of the feeding amount in the actual production process is a key for controlling the meter gram weight of the film. The open loop type single weighing meter gram weight is most, the advantages are larger, but the open loop type weighing is realized, the weight in the feeding time period is data acquisition without a method, a part of raw materials do not participate in weighing, and the problems of inaccurate film and weight exist.

Disclosure of Invention

In view of the problems existing in the prior art, the utility model discloses a meter gram weight closed-loop double-weighing control device of a film blowing machine, which adopts the technical scheme that a main controller is arranged on the outer side wall of a box body, the main controller is a PLC control module and adopts a touch screen operation device, the center of the top of the box body is fixedly connected with a main hopper, a discharge hole at the lower end of the main hopper extends into the box body and is provided with a first discharge control device, the first discharge control device is fixedly arranged on the inner wall of the box body, the inner cavity of the box body is divided into two layers, a first weighing sensor is fixedly arranged on an upper layer partition plate, a horizontal mounting plate is fixedly connected on the first weighing sensor, a first weighing hopper is arranged in the middle of the horizontal mounting plate, the weight of materials entering the first weighing hopper is weighed by the first weighing hopper through the first weighing sensor, the first weighing hopper is positioned under the main hopper, a second discharging control device is arranged at the outlet of the lower end of the first weighing hopper, the second discharging control device is fixedly arranged on the horizontal mounting plate, a second weighing sensor is fixedly arranged at the bottom of the lower layer of the box body, the second weighing hopper is arranged on the second weighing sensor, the second weighing hopper is positioned under the first weighing hopper, the weight of materials entering the second weighing hopper is weighed by the second weighing sensor, the first discharging control device, the first weighing sensor, the second discharging control device and the second weighing sensor are respectively and electrically connected with the main controller, the acquired weight information is analyzed by the main controller, and the switches of the first discharging control device and the second discharging control device are controlled according to the requirement, and finishing the loading and unloading work.

As a preferred scheme of the utility model, the first discharging control device comprises a first air cylinder fixedly connected with the inner wall of the box body, a first discharging flashboard is fixedly connected to a piston rod of the first air cylinder, the first discharging flashboard is in sliding fit with the outlet of the lower end of the main hopper, the first air cylinder is connected with a first electromagnetic valve through an air pipe, the first electromagnetic valve is fixedly connected with the inner wall of the box body and is electrically connected with the main controller, the first electromagnetic valve controls the on-off of the air inlet and the air outlet of the first air cylinder, the first discharging flashboard is driven to move through the first air cylinder so as to open or close the discharge hole of the main hopper, the second discharging control device comprises a second air cylinder fixedly connected with a second discharging flashboard fixedly connected with the piston rod of the horizontal mounting plate, the second air cylinder is in sliding fit with the outlet of the lower end of the first weighing hopper, the second air cylinder is connected with a second electromagnetic valve through an air pipe, the second electromagnetic valve is fixedly connected with the inner wall of the box body and is electrically connected with the main controller, the second electromagnetic valve controls the second air inlet and the second air valve to open or close the discharge hole through the second air inlet and the second air outlet.

The utility model has the beneficial effects that: according to the utility model, two weighing hoppers are matched to realize closed-loop weighing, each gram of raw materials is weighed according to times, the main controller is used for collecting twice weighing data, each time data is operated with the other acquired metering data, the operation result is compared with the weighing data of the first weighing sensor, errors are automatically compensated until the accuracy is achieved, the control accuracy of the film and the weight is realized, and the whole device is optimized and improved on the basis of the prior art, has a simple structure, is convenient to improve and optimize, has strong practicability, and is beneficial to popularization and application.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

fig. 2 is a cross-sectional view of the internal structure of the present utility model.

In the figure: the automatic weighing machine comprises a box body 1, a main hopper 2, a main controller 3, a first discharging control device 4, a first cylinder 401, a first discharging flashboard 402, a first electromagnetic valve 403, a first weighing hopper 5, a first weighing sensor 6, a second discharging control device 7, a second cylinder 701, a second discharging flashboard 702, a second electromagnetic valve 703, a second weighing hopper 8, a second weighing sensor 9 and a horizontal mounting plate 10.

Detailed Description

Example 1

As shown in fig. 1 to 2, a main controller 3 is installed on the outer side wall of a box body 1, the main controller 3 is a PLC control module and adopts a touch screen operation device, the center of the top of the box body 1 is fixedly connected with a main hopper 2, a discharge port at the lower end of the main hopper 2 extends into the box body 1 and is provided with a first discharge control device 4, the first discharge control device 4 comprises a first cylinder 401 fixedly connected on the inner wall of the box body 1, a first discharge flashboard 402 is fixedly connected on a piston rod of the first cylinder 401, the first discharge flashboard 402 is in sliding fit with the outlet at the lower end of the main hopper 2, the first cylinder 401 is connected with a first electromagnetic valve 403 through an air pipe, the first electromagnetic valve 403 is fixedly connected on the inner wall of the box body 1 and is electrically connected with the main controller 3, the first electromagnetic valve 403 controls the on-off of the air inlet and the air outlet of the first air cylinder 401, the first air cylinder 401 drives the first discharging flashboard 402 to move, thereby realizing the opening or closing of the discharging hole of the main hopper 2, the inner cavity of the box body 1 is divided into two layers, a first weighing sensor 6 is fixedly arranged on an upper layer partition plate, a horizontal mounting plate 10 is fixedly connected on the first weighing sensor 6, a first weighing hopper 5 is arranged in the middle of the horizontal mounting plate 10, the weight of materials entering the first weighing hopper 5 is weighed by the first weighing sensor 6, the first weighing hopper 5 is positioned under the main hopper 2, a second discharging control device 7 is arranged at the outlet of the lower end of the first weighing hopper 5, the second discharging control device 7 is fixedly connected with a second air cylinder 701 comprising the second weighing sensor 10, the second air cylinder 701 is fixedly connected with a second discharging flashboard 702 on a piston rod of the second air cylinder 701, the second discharging flashboard 702 is in sliding fit with the outlet of the lower end of the first weighing hopper 5, the first weighing hopper 5 and the second air cylinder 701 are not contacted with the box body 1, the second air cylinder 701 is communicated and connected with a second electromagnetic valve 703 through an air pipe, the second electromagnetic valve 703 is fixedly connected on the inner wall of the box body 1 and is electrically connected with the main controller 3, the second electromagnetic valve 703 controls the on-off of the air inlet and the air outlet of the second air cylinder 701, the second discharging flashboard 702 is driven to move through the second air cylinder 701, thereby realizing the opening or closing of the outlet of the first weighing hopper 5, the second weighing sensor 9 is fixedly arranged at the bottom of the lower layer of the box body 1, install second weighing hopper 8 on the second weighing sensor 9, second weighing hopper 8 does not contact with box 1, second weighing hopper 8 is located under the first weighing hopper 5, weigh the material weight that gets into in the second weighing hopper 8 through second weighing sensor 9, first discharge control device 4, first weighing sensor 6, second discharge control device 7, second weighing sensor 9 respectively with main control unit 3 electric connection, carry out the analysis through main control unit 3 to the weight information that obtains to control the switch of first discharge control device 4 and second discharge control device 7 as required, accomplish the work of loading and unloading.

The working principle of the utility model is as follows: the material is placed in main hopper 2, by the break-make of first solenoid valve 403 of main control unit 3 control, realize first cylinder 401 business turn over, drive the removal of first flashboard 402 of unloading through first cylinder 401, thereby realize opening or closing the discharge gate of main hopper 2, make the material enter into first weighing hopper 5 from main hopper 2, weigh the weight of the material that gets into in the first weighing hopper 5 by first weighing sensor 6, and feed back to main control unit 3 and handle, then control by second discharge control unit 7 and open the discharge gate of first weighing hopper 5, make the material get into second weighing hopper 8, weigh the material weight and feed back to main control unit 3 and handle by second weighing sensor 9, thereby guarantee the accurate control to the material.

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 drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question 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, and furthermore, the terms "first", "second", etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance or implying a number of the indicated technical features, whereby the features defining "first", "second", etc. may explicitly or implicitly include one or more of such features.

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; either directly or indirectly through intermediaries, or by communication between two elements, the specific meaning of the terms in the present disclosure will be understood by those skilled in the art in view of the specific circumstances.

The components and circuit portions not described in detail herein are prior art.

Although the specific embodiments of the present utility model have been described in detail, the present utility model is not limited to the above embodiments, and various changes and modifications without inventive labor may be made within the scope of the present utility model without departing from the spirit of the present utility model, which is within the scope of the present utility model.

Claims (4)

1. The utility model provides a two weighing control device of inflation film manufacturing machine meter gram weight closed loop, includes box (1), install main control unit (3) on box (1) lateral wall, a serial communication port, box (1) top center fixedly connected with main hopper (2), main hopper (2) lower extreme discharge gate stretches into box (1) and installs first unloading controlling means (4) in discharge gate department, first unloading controlling means (4) fixed mounting is in on box (1) inner wall, box (1) inner chamber divide into two-layer, fixed mounting has first weighing sensor (6) on the upper baffle, fixedly connected with horizontal mounting plate (10) on first weighing sensor (6), horizontal mounting plate (10) mid-mounting has first weighing hopper (5), first weighing hopper (5) are located under main hopper (2), second unloading controlling means (7) are installed to first weighing hopper (5) lower extreme exit, second unloading controlling means (7) fixed mounting has first weighing sensor (6) on upper mounting plate (8), second weighing sensor (8) are located under second weighing sensor (8) on second weighing hopper (8), the first discharging control device (4), the first weighing sensor (6), the second discharging control device (7) and the second weighing sensor (9) are respectively and electrically connected with the main controller (3).

2. The film blowing machine meter gram weight closed-loop double-weighing control device according to claim 1, wherein: the main controller (3) is a PLC control module and adopts a touch screen operation device.

3. The film blowing machine meter gram weight closed-loop double-weighing control device according to claim 1, wherein: the first discharging control device (4) comprises a first cylinder (401) fixedly connected to the inner wall of the box body (1), a first discharging flashboard (402) is fixedly connected to a piston rod of the first cylinder (401), the first discharging flashboard (402) is in sliding fit with the outlet of the lower end of the main hopper (2), the first cylinder (401) is connected with a first electromagnetic valve (403) through an air pipe in a communicating mode, and the first electromagnetic valve (403) is fixedly connected to the inner wall of the box body (1) and is electrically connected with the main controller (3).

4. The film blowing machine meter gram weight closed-loop double-weighing control device according to claim 1, wherein: the second unloading control device (7) comprises a second cylinder (701) fixedly connected to the horizontal mounting plate (10), a second unloading flashboard (702) is fixedly connected to a piston rod of the second cylinder (701), the second unloading flashboard (702) is in sliding fit with the outlet of the lower end of the first weighing hopper (5), the second cylinder (701) is connected with a second electromagnetic valve (703) through an air pipe in a communicating manner, and the second electromagnetic valve (703) is fixedly connected to the inner wall of the box body (1) and is electrically connected with the main controller (3).