CN209927240U

CN209927240U - PVDC automatic membrane width adjusting mechanism

Info

Publication number: CN209927240U
Application number: CN201920454519.5U
Authority: CN
Inventors: 申振锁; 周宏铎
Original assignee: Zhengzhou New Printing Co Ltd
Current assignee: Zhengzhou New Printing Co Ltd
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2020-01-10
Anticipated expiration: 2029-04-04

Abstract

A PVDC automatic membrane width adjusting mechanism comprises a membrane blowing machine, a first water tank, a second water tank, a water level monitoring device, a water level control device and a membrane width control device, wherein the water level monitoring device comprises a measuring tube and a buoy, the buoy can float on the surface of monitored liquid, the top of the buoy is provided with a connecting rod, the top end of the measuring tube is provided with a control module, the water level control device comprises a water pump, a water pipe, a stepping motor, a lead screw and a water blocking flashboard, the membrane width control device comprises a width measuring sensor, and the control module, the stepping motor and the width measuring sensor are all connected with a controller. The width of the film can be effectively controlled.

Description

PVDC automatic membrane width adjusting mechanism

Technical Field

The utility model relates to an industrial manufacturing field especially relates to a PVDC automatically regulated membrane width mechanism.

Background

The width of the film produced by the film blowing machine is mainly determined by the volume of gas filled in the film bubble under the condition that the film bubble is stable, the gas degree is high, the width of the film bubble is wide, and vice versa. In the production process, the width of the film product can be changed due to the fact that the traction roller is not compacted or air leakage, environment temperature change, extrusion amount fluctuation and the like are caused by air holes in the film. Therefore, the measuring personnel need to observe and measure the width of the film at any time, perform timely deflation and inflation adjustment, and the labor intensity is high. If the adjustment is not timely, the problem of inconsistent width of the film product is likely to occur. The prior art has the problems of poor adjustment, easy fault, incapability of reflecting asynchronous deformation of double films by measured data and the like.

Disclosure of Invention

An object of the utility model is to overcome not enough among the prior art, provide a PVDC automatic adjustment membrane width mechanism of measurement and control film width that can be more accurate.

The utility model discloses a realize through following technical scheme:

a PVDC automatic membrane width adjusting mechanism comprises a membrane blowing machine, a first water tank, a second water tank, a water level monitoring device for monitoring the water level in the first water tank, a water level control device for controlling the water level in the first water tank and a membrane width control device, wherein the water level monitoring device comprises a hollow measuring pipe and a buoy arranged in the measuring pipe, the buoy can float on the surface of monitored liquid, a connecting rod is arranged at the top of the buoy, a control module is arranged at the top end of the measuring pipe, the water level control device comprises a water pump positioned at the bottom of the second water tank, a water pipe connected with the water pump, a stepping motor positioned above the second water tank, a lead screw connected with the stepping motor and a water retaining flashboard connected with the lead screw, and the membrane width control device comprises a width measuring sensor for measuring the width of a membrane, the control module, the stepping motor and the width measuring sensor are all connected with a controller.

Preferably, the control module comprises a sliding rheostat and a connecting rod, the sliding resistor comprises a resistor, a single chip microcomputer and a conducting rod which are electrically connected, one end of the conducting rod is fixedly connected with the connecting rod, and the other end of the conducting rod is connected with the resistor in a sliding mode.

Preferably, the control module further comprises a current processing chip for detecting the magnitude of the current, the current processing chip is electrically connected with the single chip microcomputer, the resistor is a vertically arranged bar-shaped resistor, and the conducting rod is connected with the resistor through an electric brush arranged at the sliding end.

Preferably, the buoy is a cylinder, and a balancing weight is arranged at the bottom end inside the buoy.

Preferably, the measuring pipe is a cylinder with an inner diameter matched with the buoy, and the inner side wall of the measuring pipe is smooth.

Preferably, the upper end of the right side wall of the first water tank is provided with a sliding groove, and the water blocking gate is tightly attached to the sliding groove and slides in the sliding groove along the vertical direction.

The beneficial effects of the utility model reside in that: the utility model discloses simple structure, high durability and convenient use, water level monitoring device's flotation pontoon only is as flotation device, inside does not set up electronic component, the damage of having avoided causing at soaking the in-process, the fault incidence has been reduced, the control reliability has been improved, water level control device's water pump and manger plate flashboard cooperation, the spout on manger plate flashboard and the water tank wall closely laminates and slides along vertical direction in the spout, the water level control effect is showing, thereby the inside and outside water level differential pressure of control small membrane bubble changes, the width that makes the film obtains effective control.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the film width control device of the present invention;

FIG. 3 is a schematic diagram of a controller according to the present invention;

FIG. 4 is a schematic diagram of the control module of the present invention;

wherein: the film blowing machine comprises a film blowing machine 1, a traction roller 2, a water pump 3, a water pipe 4, a water retaining flashboard 5, a lead screw 6, a stepping motor 7, a small bubble inner water level 8, a control module 9, a display screen 10, a control panel 11, a connecting rod 12, a buoy 13, a first water tank 14, a small bubble outer water level 15, a balancing weight 16, a measuring pipe 17, a width measuring sensor 18, a film 19, a base 20, an operating panel 21, a winding table 22, a single chip microcomputer 23, a lead wire 24, a conducting rod 25, a resistor 26, an electric brush 27 and a second water tank 28.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-4, a PVDC automatic membrane width adjusting mechanism, comprising a film blowing machine 1, a first water tank 14, a second water tank 28, a water level monitoring device for monitoring the water level in the first water tank 14, a water level control device for controlling the water level in the first water tank 14, a width control device for a thin film 19, wherein the water level monitoring device comprises a hollow measuring pipe 17 and a float 13 disposed inside the measuring pipe 17, the float 13 can float on the surface of the monitored liquid, the top end of the measuring pipe 17 is provided with a control module 9, the float 13 is a vertically disposed cylinder, the inside of the measuring pipe 17 is provided with a counterweight 16 for maintaining the posture in the liquid, the measuring pipe 17 is a cylindrical cylinder sleeved outside the float 13, the inner side wall of the measuring pipe 17 is smooth and the inner diameter of the measuring pipe 17 is matched with the float 13, so that the float 13 can freely slide up and down inside the measuring pipe 17, the connecting rod 12 is matched with the control module 9 to realize the detection function of the water level. The buoy 13 of the water level monitoring device is only used as a floating device, and no electronic element is arranged in the buoy, so that damage caused in the soaking process is avoided, the fault occurrence rate is reduced, and the monitoring reliability is improved. The control module 9 comprises a slide rheostat and a connecting rod 12, the slide rheostat comprises a resistor 26, a singlechip 23 and a conductive rod 25 which are electrically connected, one end of the conductive rod 25 is fixedly connected with the connecting rod 12, the other end of the conductive rod 25 is slidably connected with the resistor 26, the singlechip 23 is an STC series singlechip, the resistor 26 is a vertically arranged strip-shaped resistor, one end of the conductive rod 25 close to the resistor 26 is connected with an electric brush 27, the electric brush 27 is annular and is sleeved outside the resistor 26, the electric brush 27 can slide on the resistor 26 along with the up-and-down movement of the conductive rod 25, the other end of the conductive rod 25 extends and is connected into a circuit through a soft lead 24, the length of the lead 24 can allow the up-and-down movement of the conductive rod 25, the control module 9 further comprises a current processing chip for detecting the current magnitude in the circuit, the current processing chip is, the control module 9 is externally provided with a display screen 10 and an operation panel 11, the display screen 10 is electrically connected with the single chip microcomputer 23 for displaying monitored water level information, the single chip microcomputer 23 is electrically connected with the controller 21 for transmitting an operation command, the controller 21 is a Siemens s7-200 series PLC controller, and the operation panel 11 can also manually input the operation command.

The water level control device comprises a water pump 3 positioned at the bottom of the second water tank 28, a water pipe 4 connected with the water pump 3, a stepping motor 7 positioned above the second water tank 28, a lead screw 6 connected with the stepping motor 7, and a water retaining gate plate 5 connected with the lead screw 6, wherein the water pump 3 is fixed at the bottom of the second water tank 28 and always in a working state, water in the second water tank 28 is continuously conveyed into the first water tank 14, one water tank wall is shared between the first water tank 14 and the second water tank 28, the shared water tank wall is lower than the other water tank wall of the first water tank 14, a sliding groove is formed in the shared water tank wall, the water retaining gate plate 5 is tightly attached to the sliding groove and slides in the sliding groove along the vertical direction, and the water level control effect is remarkable.

The film 19 width control means includes a width measuring sensor 18 for measuring the width of the film 19, and the measuring sensor 18 is attached to a base 20. The control module 9, the stepping motor 7 and the width measuring sensor 18 are all electrically connected with a controller 21, the controller is connected to a base 20, and the base 20 is further connected with a winding table 22.

The utility model discloses a work flow as follows: before monitoring the water level, firstly, the water level monitoring device is installed and fixed, then water is injected into the water tank, because the bottom of the measuring pipe 17 is communicated with the water tank, according to the principle of a communicating vessel, the water level in the measuring pipe 17 is flush with the water tank, the buoy 13 floats under the action of buoyancy, when the water level is changed, the buoy 13 moves along with the liquid level to drive the connecting rod 1212 and the conducting rod 25 to move up and down, the brush 27 of the conducting rod 25 slides on the resistor 26, so that the length of the resistor 26 connected into the circuit is changed, namely the value of the resistor 26 connected into the circuit is changed, the current in the circuit is changed along with the change, the current is detected by the current processing chip and converted into an electric signal to be sent to the singlechip 23, the singlechip 23 displays the electric signal through the display screen 10 after processing the signal and transmits the electric signal to the controller 21, meanwhile, the film 19, after the width data of the film 19 is measured by the width measuring sensor 18, the data is transmitted to the controller 21, the controller 21 transmits an operation command to the stepping motor 7 according to the received data, so that the water blocking gate 5 is controlled to ascend or descend, the water level in the first water tank 14 is changed, the height difference between the water level 8 in the small bubble and the water level 15 outside the small bubble is changed, the pressure difference between the inside and the outside of the small bubble is changed, and the effect of controlling the width of the film 19 is achieved.

The utility model discloses simple structure, high durability and convenient use, water level monitoring device's flotation pontoon 13 only is as flotation device, inside does not set up electronic component, the damage of having avoided causing at the soaking in-process, the fault incidence has been reduced, the control reliability has been improved, water level control device's water pump 3 and the cooperation of manger plate flashboard 5, the spout on manger plate flashboard 5 and the water tank wall closely laminates and slides along vertical direction in the spout, the water level control effect is showing, thereby the inside and outside water level differential pressure of control small-film bubble changes, make film 19's width obtain control.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a PVDC automatically regulated membrane width mechanism, includes inflation film manufacturing machine, first basin, second basin, its characterized in that: also comprises a water level monitoring device for monitoring the water level in the first water tank, a water level control device for controlling the water level in the first water tank and a film width control device, the water level monitoring device comprises a hollow measuring pipe and a buoy arranged inside the measuring pipe, the buoy can float on the surface of the monitored liquid, the top of the buoy is provided with a connecting rod, the top end of the measuring pipe is provided with a control module, the water level control device comprises a water pump positioned at the bottom of the second water tank, a water pipe connected with the water pump, a stepping motor positioned above the second water tank, a lead screw connected with the stepping motor and a water retaining flashboard connected with the lead screw, the film width control device comprises a width measuring sensor for measuring the width of the film, and the control module, the stepping motor and the width measuring sensor are all connected with the controller.

2. The PVDC auto-adjusting film width mechanism of claim 1, wherein: the control module comprises a slide rheostat and a connecting rod, the slide rheostat comprises a resistor, a single chip microcomputer and a conducting rod which are electrically connected, one end of the conducting rod is fixedly connected with the connecting rod, and the other end of the conducting rod is connected with the resistor in a sliding mode.

3. The PVDC auto-adjusting film width mechanism of claim 2, wherein: the control module further comprises a current processing chip used for detecting the magnitude of current, the current processing chip is electrically connected with the single chip microcomputer, the resistor is a vertically arranged bar-shaped resistor, and the conducting rod is connected with the resistor through an electric brush arranged at the sliding end.

4. The PVDC auto-adjusting film width mechanism of claim 1, wherein: the flotation pontoon is the cylinder, and the inside bottom of flotation pontoon is provided with the balancing weight.

5. The PVDC auto-adjusting film width mechanism of claim 1, wherein: the survey buret is internal diameter and flotation pontoon matched with drum, and surveys the smooth wall of buret inside.

6. The PVDC auto-adjusting film width mechanism of claim 1, wherein: the upper end of the right side wall of the first water tank is provided with a sliding groove, and the water retaining flashboard is tightly attached to the sliding groove and slides in the sliding groove along the vertical direction.