Production equipment for full-continuous PETG (Polyethylene Terephthalate Glycol) film

Abstract

The utility model relates to the technical field of PETG (polyethylene terephthalate glycol) film production equipment, provides full-continuous PETG film production equipment, and solves the technical problems that ripples and wrinkles are easy to generate on the surface of an existing PETG film produced by adopting air cooling, and the product quality and the yield are influenced. The equipment comprises a raw material mixing machine, an extruding machine, a film blowing machine, a cooling chamber and a winding machine which are connected in sequence, and is characterized in that the cooling chamber comprises a box-shaped shell, an inner cavity of the shell is divided into a transition cavity and at least two cooling cavities through a fixed partition plate and a movable partition plate, and film outlets allowing PETG films to penetrate through are formed in the fixed partition plate and the movable partition plate respectively; the transition cavity is internally and rotatably provided with a vertically-distributed flattening roller pair, the cooling cavity is internally provided with two vertically-distributed cooling nozzle assemblies, the movable partition plate is inserted into the insertion opening in the top wall of the shell and then abuts against the positioning groove in the bottom wall of the shell, and the insertion opening where the movable partition plate is not inserted is packaged by a silica gel sealing strip.

Description

TECHNICAL FIELD

[0001] The utility model relates to PETG film production equipment technical field, concretely relates to a kind of full continuous PETG film production equipment. BACKGROUND

[0002] PETG film has good optical transparency, impact resistance and chemical resistance, and is often used in transparent packaging of food, cosmetics and electronic products. PETG film needs to be cooled and shaped during production. This process can be cooled by cooling rollers or by air-formed cooling air. The latter can help reduce the temperature gradient inside the film, is suitable for thicker films, reduces thermal stress, and can also improve the uniformity of film cooling to some extent, thereby affecting the physical and optical properties of the final product. However, compared to the former, the PETG film is suddenly in contact with the cooling air, and the film material surface is prone to produce corrugation and wrinkles, affecting product quality and yield.

[0003] Therefore, we propose a kind of full continuous PETG film production equipment. UTILITY MODEL CONTENT

[0004] (I) Technical problem solved

[0005] To overcome the shortcomings of the prior art, the utility model provides a kind of full continuous PETG film production equipment, overcomes the shortcomings of prior art, and is reasonable in design, easy to adjust, solves the technical problems that the surface of PETG film produced by air cooling is prone to produce corrugation and wrinkles, affecting product quality and yield.

[0006] (II) Technical scheme

[0007] To achieve the above purpose, the utility model is realized by the following technical scheme:

[0008] A kind of full continuous PETG film production equipment, including raw material mixing machine, extruder, film blowing machine, cooling chamber and winding machine connected in sequence, characterized by: the cooling chamber includes box-shaped shell, the inner chamber of the shell is separated to form a transition chamber, at least two cooling chambers by fixed partition, movable partition being arranged in sequence along the PETG film advancing direction, the fixed partition and movable partition are formed with membrane outlet for PETG film to pass through respectively, the transition chamber is rotatably provided with flattening counter-roller distributed in upper and lower, the cooling chamber is provided with two groups of cooling nozzle assemblies distributed in upper and lower, the top wall of the shell is provided with a plurality of insertion interfaces along the PETG film advancing direction, and the bottom wall is provided with positioning groove opposite to the insertion interface, the movable partition is abutted to the positioning groove after being inserted into the insertion interface, and the insertion interface without movable partition is sealed by silica gel sealing strip;

[0009] The front and rear sidewalls of the shell are provided with the coil pipes between the fixed partition and the plug-in interfaces and between adjacent plug-in interfaces.

[0010] Further, each of the coil pipes is connected with a refrigerant storage tank, and a temperature sensor and a heater are mounted at the liquid inlet of each of the coil pipes.

[0011] Further, the coil pipe cover is provided with a heat preservation cover which is detachably connected with the shell through a bolt and nut assembly.

[0012] Further, each of the cooling nozzle assemblies is arranged in a matrix along the PETG film advancing direction and the PETG film width direction, each of the cooling nozzles arranged along the PETG film width direction is connected to the same support beam, the support beam penetrates through the front and rear sidewalls of the shell and is supported on the synchronous beam at both ends, and the synchronous beam is lifted and adjusted by a servo motor through a screw and nut pair.

[0013] Further, the raw material mixing machine is a raw material mixing and drying machine.

[0014] Further, at least one set of upper and lower conveying counter-rollers is arranged outside the film outlet of the shell, a tensioning roller is arranged between the conveying counter-rollers and the winding machine, and both ends of the conveying counter-rollers, the tensioning roller and the winding roller of the winding machine are rotatably supported on the mounting frame.

[0015] (Three) beneficial effects

[0016] The utility model provides a kind of full continuous PETG film production equipment, with following beneficial effects:

[0017] 1, preliminary flattening operation is carried out to PETG film material using flattening counter-roller before air cooling, and subsequent several cooling chambers form segmented cooling, avoid the defects of corrugation and wrinkle caused by sudden temperature drop of PETG film material;

[0018] 2, the interval between two groups of cooling nozzle assemblies and film material can be lifted and synchronously adjusted, to adapt to the cooling needs of PETG film material of different thickness. DRAWINGS

[0019] Fig. 1 It is a structural schematic diagram of the utility model;

[0020] Fig. 2 It is a sectional view schematic diagram of cooling chamber in the utility model;

[0021] Fig. 3 It is a front view of cooling chamber in the utility model after heat preservation cover is omitted.

[0022] In the figure: 1, raw material mixer; 2, extruder; 3, film blowing machine; 4, cooling chamber; 41, shell; 411, film outlet; 412, positioning groove; 42, cooling nozzle; 43, fixed partition; 44, movable partition; 45, silica gel sealing strip; 46, coil; 471, support beam; 472, upper synchronous beam; 473, lower synchronous beam; 474, screw rod; 475, support seat; 476, servo motor; 5, winding machine; 6, flattening roller; 7, conveying roller; 8, tension roller; 9, mounting frame; 10, workbench. DETAILED DESCRIPTION

[0023] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Referring to the drawings Figs. 1-3 A full-continuous PETG film production equipment, comprising a raw material mixer 1, an extruder 2, a film blowing machine 3, a cooling chamber 4 and a winding machine 5 installed on a workbench 10 and connected in sequence, characterized in that: the cooling chamber 4 comprises a box-shaped shell 41, an inner cavity of the shell 41 is divided into a transition chamber, at least two cooling chambers (one movable partition 44 corresponds to two cooling chambers, N movable partitions 44 correspond to N+1 cooling chambers) by the fixed partition 43 and the movable partition 44 arranged in sequence along the PETG film advancing direction, the fixed partition 43 and the movable partition 44 are respectively formed with a film outlet (for reference to the film outlet 411 of the shell side wall) for the PETG film to pass through, a flattening roller pair 6 is rotatably arranged in the transition chamber and distributed upward and downward, the bearing seat at both ends of the flattening roller located upward is slidably installed on the two side walls of the transition chamber in the upward and downward direction and the height is adjusted by a lifting mechanism, the lifting mechanism can adopt a manual lifting mechanism mainly composed of a screw rod nut pair and a hand wheel, or directly adopt an automatic lifting mechanism mainly composed of an electric push rod, which is prior art and not shown in the figure, two groups of cooling nozzle assemblies are arranged in the cooling chamber and distributed upward and downward, a plurality of plug-in interfaces are formed in the top wall of the shell 41 along the PETG film advancing direction, and a positioning groove 412 is arranged on the bottom wall of the shell 41 and opposite to the plug-in interface, the movable partition abuts against the positioning groove 412 after being inserted into the plug-in interface (the upper edge of the movable partition outward protruding transversely can also be fixedly connected with the shell by a bolt), and the plug-in interface without the movable partition is sealed by a silica gel sealing strip 45;

[0025] The front and rear side walls of the shell 41 are provided with coiled pipes 46 between the fixed partition plate 43 and the plug-in interfaces and between adjacent plug-in interfaces.

[0026] In this embodiment, each coiled pipe 46 is connected to a refrigerant storage tank, and a temperature sensor and a heater (or a heat exchanger) are installed at the liquid inlet of each coiled pipe 46, so that the cooling air flow formed in each cooling chamber has different cooling temperatures, specifically, the cooling temperature decreases in a gradient along the advancing direction of the PETG film.

[0027] In this embodiment, the coiled pipe 46 is provided with a heat preservation cover which is detachably connected to the shell 41 by a bolt and nut assembly. The heat preservation cover and the coiled pipe 46 inside it can reduce the influence of external environmental temperature fluctuations on the cooling and forming effect of the PETG film.

[0028] In this embodiment, each group of cooling nozzle assemblies is distributed in a matrix along the advancing direction of the PETG film and the width direction of the PETG film. Each longitudinal row of cooling nozzles 42 arranged along the width direction of the PETG film is connected to the same support beam 471. The support beam 471 penetrates the front and rear side walls of the shell 41 and is supported on the synchronous beams at both ends. The synchronous beams are adjusted in height by the screw rod 474, the screw nut pair, and the servo motor 476. The distance between the nozzles and the PETG film can be adjusted according to the thickness of the PETG film to ensure appropriate cooling effect. In this embodiment, the threads on the upper and lower ends of the screw rod 474 are arranged in opposite directions and are synchronously connected to the nut seats at the ends of the upper and lower synchronous beams 472 and 473. The screw rods 474 at both ends of the upper and lower synchronous beams 472 and 473 can be synchronized by a synchronous shaft and a bevel gear set. The upper and lower ends of the screw rod 474 are respectively rotatably supported on the support seats 475, which are fixed to the side walls of the shell 41. Therefore, a single servo motor 476 can synchronously drive the upper and lower groups of nozzle assemblies to adjust the height, and the upper and lower synchronous beams 472 and 473 can be guided by guide columns and guide sleeves.

[0029] In this embodiment, the raw material mixing machine 1 is a raw material mixing and drying machine, which reduces the residual moisture in the raw materials and ensures the mechanical properties, transparency, and surface quality of the film product (such as reducing defects such as bubbles, silver wires, and surface roughness).

[0030] In this embodiment, at least one set of upper and lower distribution conveying counter-rollers 7 is arranged outside the film outlet 411 of the shell 41 (one or more pairs of conveying counter-rollers 7 can also be arranged in the cooling chamber 4 according to the situation). A tensioning roller 8 is rotatably arranged between the conveying counter-rollers 7 and the winding machine 5. The conveying rollers of the conveying counter-rollers 7 and the tensioning roller 8 are rotatably supported on the mounting frames 9 at both ends of the winding rollers of the winding machine 5. The conveying rollers of the conveying counter-rollers are driven to rotate by a chain, a sprocket, and a motor, which are prior art and not shown in the figure.

[0031] It is to be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0032] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A full-continuous PETG film production equipment, comprising a raw material mixing machine, an extruder, a film blowing machine, a cooling chamber and a winding machine connected in sequence, characterized in that: The cooling chamber comprises a box-shaped shell, an inner cavity of the shell is divided into a transition chamber, at least two cooling chambers by fixed partitions and movable partitions arranged in sequence along the advancing direction of the PETG film, the fixed partitions and the movable partitions are respectively provided with film outlets for the PETG film to pass through, the transition chamber is rotatably provided with flattening counter-rollers distributed in an up-down manner, the cooling chambers are provided with two groups of cooling nozzle assemblies distributed in an up-down manner, the top wall of the shell is provided with a plurality of plug-in ports along the advancing direction of the PETG film, and the bottom wall of the shell is provided with positioning grooves arranged opposite to the plug-in ports, the movable partitions are abutted against the positioning grooves after being inserted into the plug-in ports, and the plug-in ports without the movable partitions are sealed by silica gel sealing strips. Coils are arranged between the fixed partitions and the plug-in ports and between adjacent plug-in ports on the front and rear sidewalls of the shell.

2. The apparatus for producing a full-continuous PETG film according to claim 1, wherein: Each coil is connected to a refrigerant storage tank, and a temperature sensor and a heater are arranged at the liquid inlet of each coil.

3. The apparatus for producing a full-continuous PETG film according to claim 1, wherein: The coil cover is provided with a heat preservation cover which is detachably connected to the shell through a bolt and nut assembly.

4. The apparatus for producing a full-continuous PETG film according to claim 1, wherein: Each group of cooling nozzle assemblies is distributed in a matrix along the advancing direction of the PETG film and the width direction of the PETG film, each longitudinal row of cooling nozzles arranged along the width direction of the PETG film is connected to the same support beam, the support beam penetrates through the front and rear sidewalls of the shell and is supported on a synchronous beam at both ends, the synchronous beam is adjusted in height by a servo motor through a screw and nut pair.

5. The apparatus for producing a full-continuous PETG film according to claim 1, wherein: The raw material mixing machine is a raw material mixing and drying machine.

6. The apparatus for producing a full-continuous PETG film according to claim 1, wherein: At least one group of upper and lower conveying counter-rollers is arranged outside the film outlet of the shell, a tensioning roller is arranged between the conveying counter-rollers and the winding machine, and both ends of the conveying counter-rollers, the tensioning roller and the winding roller of the winding machine are rotatably supported on the mounting frame.

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