CN217226603U - Polyester optical film electrostatic adsorption device - Google Patents
Polyester optical film electrostatic adsorption device Download PDFInfo
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- CN217226603U CN217226603U CN202221044262.4U CN202221044262U CN217226603U CN 217226603 U CN217226603 U CN 217226603U CN 202221044262 U CN202221044262 U CN 202221044262U CN 217226603 U CN217226603 U CN 217226603U
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Abstract
The utility model discloses a polyester optical film electrostatic adsorption device, which is applied to the technical field of special equipment of a polyester optical film extruder, and comprises a cold drum, a die head, an electrostatic generating device and a casting sheet for connecting the cold drum and the die head, wherein the electrostatic generating device also comprises an automatic compensator, a high-voltage generator and an electrostatic adsorption wire; the automatic compensator is connected with the high-voltage generator, the high-voltage generator is connected with the electrostatic adsorption wire, and the distance between the high-voltage generator and the electrostatic adsorption wire is 0.3-0.5mm above the cold drum; the take-up box and the pay-off box are respectively positioned at two ends of the electrostatic adsorption wire, and the other end of the take-up box is connected with a take-up motor. The utility model discloses a polyester blooming electrostatic adsorption device has the function of adjustable electrostatic adsorption ability, can automatic compensation or revise electrostatic adsorption ability, guarantees electrostatic adsorption effect's stability.
Description
Technical Field
The utility model belongs to a polyester optical film extruder exclusive equipment technical field, concretely relates to is used for polyester optical film electrostatic adsorption device.
Background
When the polyester optical film raw materials are mixed and crystallized and then extruded into a cast sheet by an extruder, the high-temperature melt flows through a die head and is rapidly cooled on a quenching roller under the action of a high-voltage electrostatic adsorption system, so that the crystallization is reduced as much as possible, and the unstable stretching caused by the crystallization of a diaphragm is avoided. Therefore, when the melt of the polyester film passes through the die head and flows through the die lip, an electrostatic adsorption device is required to be arranged, so that the defects of high crystallization temperature, nonuniform crystallization, large necking, even water ripple and the like are avoided. In the die casting process system, the change of the electrostatic adsorption parameters can affect the electrostatic adsorption effect, and in a serious case, faults such as high-voltage discharge, wire breakage and the like can be caused. Therefore, designing and manufacturing an electrostatic adsorption device with stable and adjustable electrostatic adsorption effect is urgently needed by polyester optical film manufacturers.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses a solve the defect in the prior art, designed a polyester blooming electrostatic adsorption device, had adjustable electrostatic adsorption ability, in time revised electrostatic adsorption ability, avoided the static harm of casting the piece in-process, improved polyester film's adsorption effect, satisfied the combination of coating and membrane in the follow-up technology.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a polyester optical film electrostatic adsorption device comprises a cold drum, a cast sheet, a die head and an electrostatic generating device; the static electricity generating device consists of an automatic compensator, a high-voltage generator and a static electricity adsorption wire; the cold drum is connected with the die head through the cast sheet; the electrostatic generating device is connected with the high-voltage generator, the high-voltage generator is connected with the electrostatic adsorption wire, and the cold drum is arranged opposite to the electrostatic adsorption wire; and the automatic compensator adjusts the output voltage of the high-voltage generator according to the adsorption parameters.
Preferably, the polyester optical film electrostatic adsorption device further comprises a moving device of the electrostatic adsorption wire, wherein the moving device of the electrostatic adsorption wire comprises a wire collection box, a wire discharge box and a wire collection motor; the two ends of the electrostatic adsorption wire are respectively connected with the wire collecting box and the wire releasing box, and the other end of the wire collecting box is connected with the wire collecting motor.
Preferably, the take-up motor is connected with the automatic compensator, and the automatic compensator adjusts the rotating speed of the take-up motor according to the adsorption parameters.
Preferably, the polyester optical film electrostatic adsorption device further comprises a distance adjusting device, and the distance adjusting device is connected with the cold drum.
Preferably, the distance adjusting device is connected with the automatic compensator, and the automatic compensator controls the distance adjusting device to adjust the distance between the cold drum and the electrostatic adsorption wire according to the adsorption parameters.
Preferably, in the above polyester optical film electrostatic adsorption device, the high voltage generator includes: high voltage direct current power supply SCR, first resistance R c A second resistor R d And a switch K 1 And a discharge switch K 2 High voltage capacitor C 3 (ii) a The high-voltage direct-current power supply SCR and the switch K 1 The first resistor R c In series, the high-voltage capacitor C 3 With the high voltage DC power supply SCR, the switch K 1 And the first resistor R c Connected in parallel, the second resistance K 2 And the discharge switch K 2 Are sequentially connected in series with the high-voltage capacitor C 3 To the end of (a).
Preferably, the distance between the electrostatic adsorption wire and the cold drum is 0.3-0.5 mm.
Preferably, the output voltage range of the high-voltage generator is 15-20KV, the maximum current is 20mA, and the voltage stability must be ensured within 1%.
According to the technical scheme, compare with prior art, the utility model discloses a polyester optical film electrostatic adsorption device utilizes electrostatic generator to apply static in order to produce the adsorption, also can adjust electrostatic generator's output voltage according to particular case and adjust the size of adsorption affinity, has avoided the static harm of casting the piece in-process, has improved polyester film's adsorption effect, has satisfied the combination of coating and membrane in the follow-up technology.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
The attached figure of fig. 1 is the electrostatic adsorption schematic diagram of the present invention.
Fig. 2 is a schematic diagram of the high voltage generator circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.
For solving polyester optical film electrostatic adsorption device and can not adjust, revise electrostatic adsorption capacity, the embodiment of the utility model discloses polyester optical film electrostatic adsorption device.
Referring to fig. 1, the utility model discloses a polyester optical film electrostatic adsorption device, which comprises a cold drum 1, a casting sheet 2, a die head 3 and an electrostatic generator; the static electricity generating device consists of an automatic compensator 4, a high voltage generator 5 and a static electricity adsorption wire 6; when the production line runs, the cold drum 1 is connected with the die head 3 through the cast sheet 2, so that the melt flows out after passing through the die head 3 with the temperature of 220-280 ℃, and the formed cast sheet 2 flows onto the cold drum 1; the automatic compensator 4 is connected with the high voltage generator 5, the high voltage generator 5 is connected with the electrostatic adsorption wire 6, the cold drum 1 is positioned below the electrostatic adsorption wire 6, the high voltage generator 5 generates direct current voltage U, the electrostatic adsorption wire 6 and the cold drum 1 are respectively a negative electrode and a positive electrode, strong electrostatic electric field intensity is formed, air is ionized, corona is generated, a large amount of space charge is generated in the air by the corona, negative ions are drawn back to the electrode wire under the action of the electric field, positive charges are filled around the electrode wire to form space positive charges Q1, the positive ions move to the cold drum 1 to form current, the positive ions reach the cast piece 2, the cast piece 2 has good insulating property, the positive ions cannot penetrate the cast piece 2 and are accumulated on the surface of the cast piece 2 to form cast piece charges Q2, the charges of the same kind are mutually repelled, a repulsive force F is formed between Q1 and Q2, the cast piece 2 is under the action of F, closely adhere to the surface of the cold drum 1 to achieve the effects of air removal and good heat transfer. The automatic compensator 4 is electrified to operate, and when the parameters are too large or too small in the electrostatic adsorption process, the automatic compensator 4 controls the output voltage of the high-voltage generator 4 to compensate or correct, so that the electrostatic adsorption device is ensured to have a stable adsorption effect.
Referring to fig. 1, the moving device of the electrostatic adsorption filament in the electrostatic adsorption device for the polyester optical film disclosed by the utility model comprises a take-up box 7, a pay-off box 8 and a take-up motor 9; two ends of the electrostatic adsorption wire 6 are respectively connected with a wire collection box 7 and a wire discharge box 8, and the other end of the wire collection box 7 is connected with a wire collection motor 9. In the working process of the electrostatic adsorption wire, the wire take-up motor 9 runs to drive the wire take-up box 7, the wire pay-off box 8 and the electrostatic adsorption wire 6 to move, so that the electrostatic adsorption wire 6 is continuously updated, and the problem that the electrostatic adsorption wire is broken due to local high temperature caused by the fact that a low-molecular polymer volatilized by the polyester optical film in a melt state is adsorbed on the electrostatic adsorption wire is solved.
The utility model discloses a polyester blooming electrostatic adsorption device still includes apart from adjusting device, and apart from adjusting device and cold 1 being connected of bulging, can adjust the distance of cold 1 and electrostatic absorption silk of bulging.
Automatic compensator 4 and high voltage generator 5, receive line motor 9, distance adjusting device, make automatic compensator 4 can acquire high voltage generator 5's output voltage, receive line motor 9's rotational speed, the distance of cold drum 1 and electrostatic absorption silk 6, automatic compensator 4 obtains the compensation data through the analysis data acquisition, automatic compensator 4 adjusts high voltage generator 5's output voltage, receive line motor 9's rotational speed, the distance of cold drum 1 and electrostatic absorption silk 4 according to the compensation data, realize electrostatic absorption device's automatic compensation.
Referring to fig. 2, the utility model discloses a high voltage generator in polyester optical film electrostatic absorption device is by high voltage direct current power SCR, first resistance R c A second resistor R d Switch K 1 And a discharge switch K 2 High voltage capacitor C 3 Forming; high-voltage direct-current power supply SCR and switch K 1 A first resistor R c After being connected in series with a high-voltage capacitor C 3 Connected in parallel, a second resistor R d And switch K 2 A high-voltage capacitor C connected in series at one end of the high-voltage capacitor 3 The filter capacitor is used for filtering the high-voltage direct-current power supply, so that the high-voltage generator has a constant-voltage and constant-current effect.
In the utility model, the distance between the electrostatic adsorption wire 6 and the cold drum 1 is 0.3-0.5 mm; the output voltage range of the high-voltage generator is 15-20KV, the maximum current is 20mA, the voltage stability must be ensured within 1%, the environmental temperature of the high-voltage direct-current power supply is below 50 ℃, otherwise, temperature drift is generated to reduce the stability of the power supply, and the adsorption effect of the electrostatic adsorption wire is influenced.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed in the embodiment corresponds to the method disclosed in the embodiment, so that the description is simple, and the relevant parts can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A polyester optical film electrostatic adsorption device comprises a cold drum (1), a casting sheet (2) and a die head (3), and is characterized by also comprising an automatic compensator (4), a high-voltage generator (5) and an electrostatic adsorption wire (6);
the cold drum (1) is connected with the die head (3) through the casting sheet (2);
the automatic compensator (4) is connected with a high-voltage generator (5), the high-voltage generator (5) is connected with the electrostatic adsorption wire (6), and the cold drum (1) is arranged opposite to the electrostatic adsorption wire (6); and the automatic compensator adjusts the output voltage of the high-voltage generator according to the adsorption parameters.
2. The electrostatic adsorption device for the polyester optical film according to claim 1, further comprising a moving device for the electrostatic adsorption filament, wherein the moving device for the electrostatic adsorption filament comprises a take-up box (7), a pay-off box (8) and a take-up motor (9); the two ends of the electrostatic adsorption wire (6) are respectively connected with the wire collection box (7) and the wire discharge box (8), and the other end of the wire collection box (7) is connected with the wire collection motor (9).
3. The electrostatic adsorption device for polyester optical films as claimed in claim 2, wherein the take-up motor (9) is connected with the automatic compensator (4), and the automatic compensator (4) adjusts the rotation speed of the take-up motor according to adsorption parameters.
4. The polyester optical film electrostatic adsorption device according to claim 1, further comprising a distance adjusting device connected to the cold drum (1).
5. The electrostatic adsorption device for polyester optical films as claimed in claim 4, wherein the distance adjusting device is connected with the automatic compensator (4), and the automatic compensator controls the distance adjusting device to adjust the distance between the cold drum and the electrostatic adsorption wire according to the adsorption parameters.
6. The polyester optical film electrostatic adsorption device of claim 1, wherein the high voltage generator comprises: high voltage direct current power supply SCR, first resistance R c A second resistor R d And a switch K 1 And a discharge switch K 2 High voltage capacitor C 3 (ii) a The high-voltage direct-current power supply SCR and the switch K 1 The first resistor R c In series, the high-voltage capacitor C 3 SCR and the switch K of the high-voltage direct-current power supply 1 And the first resistor R c Connected in parallel, the second resistor R d And the discharge switch K 2 And the capacitors are sequentially connected in series at one end of the high-voltage capacitor.
7. The polyester optical film electrostatic adsorption device of claim 1, wherein the distance between the electrostatic adsorption wire (6) and the cold drum (1) is 0.3-0.5 mm.
8. The electrostatic adsorption device for polyester optical film according to claim 1, wherein the output voltage range of the high voltage generator is 15-20KV, the maximum current is 20mA, and the voltage stability is within 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221044262.4U CN217226603U (en) | 2022-04-22 | 2022-04-22 | Polyester optical film electrostatic adsorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221044262.4U CN217226603U (en) | 2022-04-22 | 2022-04-22 | Polyester optical film electrostatic adsorption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217226603U true CN217226603U (en) | 2022-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221044262.4U Active CN217226603U (en) | 2022-04-22 | 2022-04-22 | Polyester optical film electrostatic adsorption device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217226603U (en) |
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2022
- 2022-04-22 CN CN202221044262.4U patent/CN217226603U/en active Active
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