阅读说明：本技术 一种热塑性材料的压花成型制备方法及其设备 (Embossing forming preparation method and equipment for thermoplastic material ) 是由 丁得松 年佩 于 2020-04-15 设计创作，主要内容包括：本发明公开了一种热塑性材料的压花成型制备方法及其设备,先将压花装置和分条装置加热至热塑性材料的玻璃化温度,再对热塑性材料进行压花、分条,因玻璃化温度处于热塑性材料形态转变的临界点,在此温度下加工可以避免加工处产生毛边、毛屑或粉尘,最终再成卷进行收纳、贮存以备用,在保证产品品质的同时可降低制程要求,无需立刻衔接后续的加工工序,使得厂家的生产规划可以更加灵活。(The invention discloses an embossing forming preparation method of a thermoplastic material and equipment thereof, wherein an embossing device and a strip dividing device are heated to the glass transition temperature of the thermoplastic material, then the embossing and strip dividing are carried out on the thermoplastic material, because the glass transition temperature is at the critical point of the form transformation of the thermoplastic material, the processing can avoid burrs, burrs or dust at the processing position at the temperature, and finally the raw materials are coiled for storage and standby, thereby reducing the processing requirements while ensuring the product quality, avoiding the need of immediately connecting with the subsequent processing procedures, and ensuring that the production planning of manufacturers can be more flexible.)

1. The embossing forming preparation method of the thermoplastic material is characterized by comprising the following steps:

step 1, unreeling coiled thermoplastic materials;

step 2, heating the embossing device and the slitting device, and embossing and slitting the unreeled thermoplastic material respectively, wherein embossing is performed on two sides of the slitting line, and the embossing device and the slitting device are heated to the glass transition temperature of the thermoplastic material;

and 3, respectively rolling the plurality of thermoplastic materials.

2. The method of claim 1, wherein the method comprises the steps of:

the thermoplastic material is TAC, and the glass transition temperature of the thermoplastic material is 130 ℃.

3. The method of claim 1, wherein the method comprises the steps of:

in the step 2, the unreeled thermoplastic material is subjected to embossing and then is subjected to slitting.

4. An embossing and forming device for thermoplastic materials, which is characterized in that: comprises an unreeling device, a reeling device, a plurality of transmission shafts, an embossing wheel, a slitting knife and a heating device; the transmission shaft is arranged between the unwinding device and the winding device and used for tensioning the thermoplastic material; the embossing wheel and the slitting knife are respectively arranged opposite to the two transmission shafts, two circles of embossing are arranged on the periphery of the embossing wheel, and the slitting knife is positioned between the two circles of embossing in the direction of the production line; the heating device is used for heating the embossing wheel and the slitting knife to the glass transition temperature of the thermoplastic material.

5. An embossing apparatus for thermoplastic materials as claimed in claim 4, wherein:

the glass transition temperature is 130 ℃.

6. An embossing apparatus for thermoplastic materials as claimed in claim 4, wherein:

in the direction of the production line, the slitting knife is arranged at the rear end of the embossing device.

7. An embossing apparatus for thermoplastic materials as claimed in claim 4, wherein:

the heating device is a hot kerosene heating box.

8. An embossing apparatus for thermoplastic materials as claimed in claim 4, wherein:

the embossing device further comprises a rotary joint, and the embossing wheel is mounted on the embossing device through the rotary joint.

Technical Field

The invention relates to the technical field of thermoplastic material production, in particular to an embossing forming preparation method and equipment for a thermoplastic material.

Background

The thermoplastic property means that a substance can flow and deform when being heated and can keep a certain shape after being cooled, and common substances such as PET (polyester resin), PC (polycarbonate) and TAC (triacetylcellulose), wherein the TAC is an important material in the production process of a liquid crystal display and is mainly used as a TAC film.

Most of the existing TAC film processing technologies are semi-finished product processing, wherein a processing factory purchases coiled TAC films of semi-finished products from a raw material factory, and then processes and forms the TAC films according to product requirements to obtain finished products. TAC has strong water absorption, and is easy to generate a sticky phenomenon in the process of coiling and packaging, so that the finished product processed subsequently is uneven and affects the quality. In consideration of controlling cost and simplifying process, the width of the semi-finished TAC film produced by the raw material manufacturer is relatively large, so that the semi-finished TAC film is difficult to be directly applied to the finished product processing process of the processing manufacturer, and the TAC film needs to be unwound and cut into strips to reduce the width of the TAC film.

The existing processing flow is as follows: unwinding a semi-finished coiled TAC film → cutting and slitting, cutting off an embossing part → processing by a forming device → finishing. Because TAC has strong water absorption, the quality of the TAC is easily influenced by a damp environment (particularly in the south of China), and the TAC is easily adhered in the processes of slitting, slicing, rolling or stacking, so that the TAC cannot be easily separated in subsequent processes to cause uneven film surfaces, and therefore, the production planning requirements of the processes are high, generally how much the TAC is used in time for planning the cutting amount, and the requirements of close connection among the processes and more precise calculation of the process time length are met; in addition, the existing cutting process is easy to generate burrs and dust at the processing position, so that the product quality is low.

Disclosure of Invention

The invention aims to provide an embossing forming preparation method and equipment for a thermoplastic material, which can realize the slitting, embossing and rolling of the thermoplastic material, ensure the product quality and reduce the process requirement at the same time, and enable the production planning of manufacturers to be more flexible.

In order to achieve the above purpose, the solution of the invention is:

an embossing preparation method of thermoplastic material comprises the following steps:

step 1, unreeling coiled thermoplastic materials;

step 2, heating the embossing device and the slitting device, and embossing and slitting the unreeled thermoplastic material respectively, wherein embossing is performed on two sides of the slitting line, and the embossing device and the slitting device are heated to the glass transition temperature of the thermoplastic material;

and 3, respectively rolling the plurality of thermoplastic materials.

The thermoplastic material is TAC, and the glass transition temperature of the thermoplastic material is 130 ℃.

In the step 2, the unreeled thermoplastic material is subjected to embossing and then is subjected to slitting.

An embossing forming device for thermoplastic materials comprises an unreeling device, a reeling device, a plurality of transmission shafts, an embossing wheel, a slitting knife and a heating device; the transmission shaft is arranged between the unwinding device and the winding device and used for tensioning the thermoplastic material; the embossing wheel and the slitting knife are respectively arranged opposite to the two transmission shafts, two circles of embossing are arranged on the periphery of the embossing wheel, and the slitting knife is positioned between the two circles of embossing in the direction of the production line; the heating device is used for heating the embossing wheel and the slitting knife to the glass transition temperature of the thermoplastic material.

The glass transition temperature is 130 ℃.

In the direction of the production line, the slitting knife is arranged at the rear end of the embossing device.

The heating device is a hot kerosene heating box.

The embossing device further comprises a rotary joint, and the embossing wheel is mounted on the embossing device through the rotary joint.

After the technical scheme is adopted, the embossing device and the slitting device are heated to the glass transition temperature of the thermoplastic material, then the thermoplastic material is embossed and slit, so that burrs, burrs or dust are prevented from being generated at a processing position, and finally the thermoplastic material is rolled for storage and storage for later use, so that the processing requirements can be reduced while the product quality is ensured, the subsequent processing procedures do not need to be immediately connected, and the production planning of manufacturers can be more flexible.

Drawings

FIG. 1 is a front view of an embodiment of the present invention;

FIG. 2 is a top view of an embodiment of the present invention;

FIG. 3 is a side view of an embodiment of the present invention;

FIG. 4 is a schematic view of the embossing apparatus of FIG. 3;

the reference numbers illustrate: an unwinding device 1; a winding device 2; a transmission shaft 3; an embossing device 4; an embossing wheel 41; embossing 411; a rotary joint 42; a slitting knife 5; a thermoplastic material 6.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

An embossing preparation method of thermoplastic material comprises the following steps:

step 1, unreeling coiled thermoplastic materials;

step 2, heating the embossing device and the slitting device, and embossing and slitting the unreeled thermoplastic material respectively, wherein embossing is performed on two sides of the slitting line, and the embossing device and the slitting device are heated to the glass transition temperature of the thermoplastic material;

and 3, respectively rolling the plurality of thermoplastic materials.

The thermoplastic material is TAC, and the glass transition temperature of the thermoplastic material is 130 ℃, namely the invention is suitable for producing TAC films.

In the step 2, the embossing and slitting processes are not sequential. The better implementation mode is that the uncoiled thermoplastic material is embossed and then is stripped, so that the influence of the offset of the stripped thermoplastic material on equipment on an embossing path can be avoided, and the product quality can be further improved.

Referring to fig. 1 to 4, an embossing and forming apparatus for thermoplastic materials includes an unwinding device 1, a winding device 2, a plurality of transmission shafts 3, an embossing device 4 having an embossing wheel 41, a slitting knife 5, and a heating device (not shown). The transmission shaft 3 is arranged between the unwinding device 1 and the winding device 2 and used for tensioning the thermoplastic material 6; the embossing wheel 41 and the slitting knife 5 are respectively arranged opposite to the two transmission shafts 3, the periphery of the embossing wheel 41 is provided with two circles of embossing 411, and the slitting knife 5 is positioned between the two circles of embossing 411 in the direction of the production line; the heating device serves to heat the embossing wheel 41 and the slitting knife 5 to the glass transition temperature of the thermoplastic material 6. The temperature is at the critical point of the form transformation of the thermoplastic material 6, and the thermoplastic material 6 is processed at the temperature, so that burrs, flocks or dust can be prevented from being generated at the processing position, and the quality of the product is ensured.

The glass transition temperature is 130 ℃, namely the glass transition temperature of TAC, so that the equipment is more suitable for the processing procedure of the TAC film.

In the direction of the production line, the slitting knife 5 is arranged at the rear end of the embossing device 4, namely, the uncoiled thermoplastic material 6 is firstly embossed and then slit, so that the phenomenon that the embossed pattern is influenced by the deviation of the thermoplastic material 6 in the axial direction of the transmission shaft 3 after slitting can be avoided, and the product quality can be further improved.

The heating device is a hot kerosene heating box.

The embossing device 4 further comprises a rotary joint 42, and the embossing wheel 41 is mounted on the embossing device 4 through the rotary joint 42, so that the embossing wheel 41 can be mounted detachably, and a user can replace the embossing wheel 41 with different structures (such as different spaces of the embossing lines 411) conveniently according to production requirements.

According to the scheme, the embossing device (the embossing wheel 41) and the slitting device (the slitting knife 5) are heated to the glass transition temperature of the thermoplastic material 6, then the thermoplastic material 6 is embossed and slit, so that burrs, burrs or dust at a processing position are avoided, and finally the thermoplastic material is rolled for storage and storage for later use.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.