TWM459106U - Sheet extension mechanism - Google Patents

Description

Sheet extension mechanism

The present invention relates to a sheet stretching mechanism which is a sheet extending mechanism which further processes a sheet-shaped film blank into a film after passing a granular plastic material through an extruder into a sheet-shaped film embryo.

The conventional sheet stretching mechanism is used to extrude an extruder into a sheet-shaped blank, which is further processed to reduce the thickness to form a film. The plastic film can be used as a wrap film, a heat shrink film, a paper surface film, etc. . The conventional sheet stretching mechanism mainly uses a plurality of rollers to roll a sheet-shaped film cup, so that the sheet-shaped film embryo is formed into a film shape, and the sheet-like film embryo is to be formed into a film-like process. The temperature of the sheet will affect the yield and physical properties of the film. However, the temperature of the sheet-like membrane embryo is greatly affected by the ambient temperature. For example, the polylactic acid membrane embryo is extruded into a sheet-like polylactic acid membrane. In the film-forming process, it needs to be kept at a specific temperature so that the polylactic acid film embryo does not cause damage when it is extended, and the correct manufacturing temperature is provided in the process of forming the polylactic acid film, which contributes to the crystallization of the polylactic acid film. Stable, further improving the yield of the polylactic acid film and obtaining a polylactic acid film having good physical properties, however, the general sheet stretching mechanism cannot control the temperature at which the sheet-like film blank is processed into a film process.

Moreover, most of the sheet stretching mechanisms can only be used to process the sheet blank into thin The film-like, film-like plastic film has a smooth surface without capillary pores, so it is impossible to directly print the pattern or text on the surface of the plastic film by using printing technology, so the plastic film needs an additional surface treatment, so that the surface of the plastic film has capillary pores. In order to print patterns or text on the surface of plastic film, plastic film needs to be processed twice to print, which will increase the manufacturing cost of the manufacturer.

To this end, the present invention provides a sheet stretching mechanism comprising an extruder having a sheet die, a calendering section disposed on one side of the extruder, and the calendering section including pivoting adjacent sheets a guide wheel of the material die, and an adjacent two calender wheel, the calendering section further comprises a first temperature controller, the first temperature controller maintaining the guide wheel and each calender wheel in the first temperature range a surface treatment section disposed on one side of the calendering section, the surface treatment section pivoting a plurality of surface treatment wheels and a surface discharge treatment device electrically connected to each surface treatment wheel, disposed in the surface treatment section An extension section of one side, the extension section includes an adjacent two low speed wheels and at least one high speed wheel having a higher speed than the low speed wheel, the extension section further includes a second temperature regulator, and the second temperature regulator will each have a low speed The wheel and the high speed wheel are maintained in a second temperature range, a heat setting section disposed on one side of the extension section, the heat setting section pivoting a plurality of heat setting wheels, and the heat setting section further includes a third temperature regulation Device The temperature control of the heat setting wheel is maintained at a third temperature range, to close a roll section provided at one side of the heat setting zone, the retractor portion is pivoted to close round a roll.

The sheet extending mechanism of the present invention adjusts the temperature of each section of the sheet extending mechanism through the first, second and third temperature controllers, so that the sheet stretching mechanism of the present invention can adjust the characteristics of various materials when processing various materials. Proper processing temperature One step can produce a finished film with stable physical properties. In addition, the present invention performs surface treatment such as corona discharge on the membrane blank through the surface treatment section, so that the final surface of the finished film has capillary pores, so that the printing operation can be performed on the surface of the molded product.

10‧‧‧Sheet extension mechanism

20‧‧‧Extrusion machine

22‧‧‧ Mounting bracket

24‧‧‧ drive

26‧‧‧Transmission

28‧‧‧ cavity

38‧‧‧ Feeding hopper

80‧‧‧Sheet die

81‧‧‧membrane

82‧‧‧Depression section

84‧‧‧ guided wheels

86‧‧‧Depression wheel

88‧‧‧First power unit

90‧‧‧First temperature controller

92‧‧‧Surface treatment section

94‧‧‧Surface treatment wheel

96‧‧‧Surface discharge treatment device

111‧‧‧Extended section

113‧‧‧Low speed wheel

115‧‧‧High speed wheel

117‧‧‧second power unit

119‧‧‧ Third power unit

131‧‧‧Second temperature controller

133‧‧‧Hot-shaped section

135‧‧‧ heat setting wheel

137‧‧‧ Third temperature controller

139‧‧‧receiving section

151‧‧‧Retraction round

153‧‧‧ drive

155‧‧‧Finished film

H1, H2, H3‧‧‧ width

T1, T2, T3‧‧‧ thickness

The first figure is a side view of the sheet stretching mechanism of the first embodiment of the creation.

The second figure is a perspective view of the sheet forming behavior film of the first embodiment.

The third figure is a side view of the sheet extending mechanism of the first embodiment of the creation.

All of the following drawings are merely illustrative of the basic teachings of the present invention, and the extension of the number, position, relationship, and size of the components constituting the preferred embodiment will be explained in the drawings. Post-guided changes are implemented in industry skills. In addition, changes in the exact dimensions and size ratios associated with specific strengths, weights, strengths, and similar requirements are also within the skill of the industry after reading and understanding the teachings of this creation.

In the different figures, the same reference numerals are used to designate the same or similar elements; in addition, please refer to the text such as "first", "second", "upper", "lower", "before", "after", "inside" , "outside", "end", "part", "segment", "width", "thickness", "zone", etc. and similar terms are only convenient for the viewer to refer to the construction in the figure and only to help describe the text. Creation only.

According to the drawings, the sheet extending mechanism 10 of the present invention includes an extruder 20, and the extruder 20 includes a cavity 28 mounted on a mounting frame 22, and a surface of the cavity 28 is provided with a feeding hopper 38. The extruder 20 further includes a fixing device A driving device 24 on the mounting frame 22 and a transmission device 26 coupled to the driving device 24 are provided with a sheet die 80 at the end of the cavity 28. The driving device 24 rotates through a transmission device 26 to rotate a feeding screw pivoted in the cavity 28, thereby introducing the granular material (for example, granular polylactic acid raw material) in the feeding hopper 38 into the cavity 28 and heating it into a melting state. In the form of a fluid, the extruder 20 further extrudes the molten fluid-like plastic through the feed screw into the sheet die 80, thereby forming a flaky film preform 81.

According to the drawings, the sheet extending mechanism 10 further includes a calendering section 82 disposed on one side of the extruder 20, and the calendering section 82 is provided with three adjacent guide wheels 84 and two in a frame. The adjacent calendering wheel 86 and the gap between the two calendering wheels 86 are relatively small. The calendering section 82 further includes a first power unit 88 and a first temperature controller 90, wherein the first power unit 88 is composed of, for example, a motor The first power unit 88 is coupled to the at least one calender wheel 86 through the chain, causing the first power unit 88 to rotate the at least one calender wheel 86. The first temperature controller 90 is coupled to the at least one calender wheel 86, and thus the first temperature. The governor 90 is capable of heating each of the calendering wheels 86 and the guide wheels 84 to maintain the temperature of each of the calendering rolls 86 and the guide wheels 84 within a first temperature range suitable for the material used.

According to the drawings, the sheet extending mechanism 10 further includes a surface treatment section 92 disposed on one side of the calendering section 82, the calendering section 82 being located between the extruder 20 and the surface treatment section 92, the surface treatment zone The segment 92 is pivotally provided with a plurality of surface treatment wheels 94. The surface treatment section 92 further includes a surface discharge treatment device 96 electrically coupled to each surface treatment wheel 94. The surface discharge treatment device 96 can be a corona discharge device.

According to the drawings, the sheet extending mechanism 10 also includes an extending section 111 disposed on one side of the surface treating section 92. The extending section 111 includes a plurality of low speed wheels 113 pivoted in the frame and a plurality of high speed wheels. 115. The extension section 111 further includes a second power unit 117 that drives the low speed wheel 113 to rotate and is composed of a motor, and a third power unit 119 that drives the high speed wheel 115 to rotate and is composed of a motor. The extension section 111 further includes Each of the low speed wheels 113 and the second temperature controller 131 connected to the high speed wheel 115 has a lower speed than the speed of the high speed wheel 115, and the second temperature controller 131 connects the low speed wheels 113 and the high speed wheels 115. The temperature is maintained within a second temperature range suitable for the material used.

According to the drawings, the sheet extending mechanism 10 further includes a heat-set section 133 disposed on one side of the extended section 111, such that the extended section 111 is located between the surface treatment section 92 and the heat-set section 133, which is hot. The sizing section 133 includes a plurality of heat setting wheels 135 pivotally disposed in the frame, the heat sizing section 133 further including a third temperature controller 137 that maintains the temperature of each heat setting wheel 135 at a suitable temperature. The third temperature range of the material used.

According to the drawings, the sheet extending mechanism 10 includes a take-up section 139 disposed on one side of the heat-set section 133, causing the heat-set section 133 to be located between the take-up section 139 and the extended section 111. The receiving section 139 includes a winding reel 151 pivoted in the frame and a driving device 153, and the driving device 153 drives the winding reel 151 to rotate.

For convenience of explanation, it is assumed that the granular polylactic acid raw material is placed in the feed hopper 38 of the extruder 20, and the driving device 24 is connected to the transmission device 26 to cause the inside of the cavity 28. The feed screw rotates to further introduce the granular polylactic acid raw material in the feed hopper 38 into the cavity 28, and the cavity 28 heats the granular polylactic acid raw material into a molten fluid and then extrudes through the sheet die 80. The material die 80 is a sheet-shaped film preform 81 obtained by extruding a molten polylactic acid fluid, and the film blank 81 has an initial width H1 and an initial thickness T1.

Referring to Figures 1 and 2, the sheet-like blank 81 passes through the respective guide wheels 84 of the calendering section 82, so that the temperature of the membrane 81 gradually decreases to a desired temperature, and each of the guide wheels 84 causes a membrane embryo. 81 is shaped and uniform in thickness, and the film blank 81 of each guide wheel 84 is further led to between the two calendering wheels 86, so that the width of the film blank 81 is increased by the two calender rolls 86, but the thickness is reduced, that is, the membrane 81 A thickness T2 having a width H2 larger than the width H1 and a thickness T1 smaller than the thickness T1 is formed by the second calender wheel 86, and further, since the guide wheel 84 and the calender wheel 86 are maintained in the first temperature range, the sheet-like blast 81 formed of polylactic acid is formed. It is also maintained in the first temperature range substantially as it passes through the calendering section 82, so that the membrane 81 has proper ductility.

When the film blank 81 further passes through the surface treatment section 92, each surface treatment wheel 94 performs corona discharge on the surface of the membrane blank 81, causing the surface of the membrane 81 to form capillary pores, which is advantageous for the printing operation.

When the film 81 continues to move through the respective low speed wheels 113 and the high speed wheels 115 toward the extension section 111, since the rotation speed of each high speed wheel 115 is higher than each of the low speed wheels 113, the film blank 81 passes through the extension section 111 and is subjected to the high speed wheel 115. Stretching further causes the membrane 81 to be reduced from the width H2 to the width H3, and the thickness of the membrane 81 is reduced from T2 to T3, thus passing through the membrane 8 after extending the section 111 1 is formed into a film shape, and since each of the low speed wheels 113 or each of the high speed wheels 115 is controlled by the second temperature controller 131 in the second temperature range, it is ensured that the film 81 stretched by the extension section 111 is maintained properly. It is ductile and will not be damaged during the stretching process.

When the film-shaped film blank 81 continues to advance through the heat setting section 133, each heat setting wheel 135 is maintained in the third temperature range, which contributes to the stabilization of the film of the polylactic acid film, and further enables stable physical properties. The polylactic acid is formed into a film product 155, and the film product 155 is wound into a roll shape by the winding reel 151 of the winding section 139.

The sheet extending mechanism 10 of the present invention adjusts the temperature of each section of the sheet extending mechanism 10 through the first, second, and third temperature controllers 90, 131, 137, so that the sheet extending mechanism 10 of the present invention processes various materials. It is possible to adjust an appropriate processing temperature for the characteristics of various materials, and further to produce a film product 155 having stable physical properties. Further, the present invention performs surface treatment such as corona discharge on the film blank 81 through the surface treatment section 92, so that the surface of the final film product 155 has capillary pores, so that the printing operation can be performed on the surface of the molded product.

The sheet extending mechanism 10 of the present invention can integrate the calendering section 82 with the surface treating section 92 in addition to the design in which the calendering section 82 and the surface treating section 92 are separated as shown in Fig. 1, see Fig. 3 The calendering section 82 of the sheet extending mechanism 10 of the second embodiment is provided with three calendering wheels 86, and the calendering section 82 is further provided with a surface discharge treatment device 96, and the surface discharge treatment device 96 is electrically connected to each calendering wheel 86. Thus, when the film blank 81 passes through each of the calendering wheels 86, the calendering wheel 86 simultaneously performs the surface of the film blank 81. The corona discharge treatment causes the surface of the membrane 81 passing through the calendering section 82 to have capillary pores.

The present invention disclosed in the specification is to be considered as illustrative and not restrictive. The scope of the present invention is defined by the scope of the appended claims, and is not intended to be limited by the scope of the invention.

10‧‧‧Sheet extension mechanism

20‧‧‧Extrusion machine

22‧‧‧ Mounting bracket

24‧‧‧ drive

26‧‧‧Transmission

28‧‧‧ cavity

38‧‧‧ Feeding hopper

80‧‧‧Sheet die

81‧‧‧membrane

82‧‧‧Depression section

84‧‧‧ guided wheels

86‧‧‧Depression wheel

88‧‧‧First power unit

90‧‧‧First temperature controller

92‧‧‧Surface treatment section

94‧‧‧Surface treatment wheel

96‧‧‧Surface discharge treatment device

111‧‧‧Extended section

113‧‧‧Low speed wheel

115‧‧‧High speed wheel

117‧‧‧second power unit

119‧‧‧ Third power unit

131‧‧‧Second temperature controller

133‧‧‧Hot-shaped section

135‧‧‧ heat setting wheel

137‧‧‧ Third temperature controller

139‧‧‧receiving section

151‧‧‧Retraction round

153‧‧‧ drive

155‧‧‧Finished film

Claims (3)

A sheet stretching mechanism comprising: an extruder (20) having a sheet die (80); a calendering section (82) disposed on the extruder (20) The side, calendering section (82) includes at least one guide wheel (84) pivoted adjacent the sheet die (80), and an adjacent two calender wheel (86), the calendering section (82) further comprising a a first temperature controller (90), the first temperature controller (90) maintains each of the guide wheels (84) and each of the calendering wheels (86) in a first temperature range; a surface treatment section (92) is provided On one side of the calendering section (82), the surface treatment section (92) is pivotally provided with a plurality of surface treatment wheels (94) and a surface discharge treatment device (96) electrically connected to each surface treatment wheel (94); An extension section (111) is disposed on one side of the surface treatment section (92), and the extension section (111) includes adjacent two low speed wheels (113) and at least one high speed higher than the low speed wheel (113) The wheel (115), the extension section (111) further includes a second temperature controller (131), and the second temperature controller (131) maintains each of the low speed wheel (113) and the high speed wheel (115) in the second temperature range Inside; a heat-set section (133), set in the extension One side of the extending section (111), the heat setting section (133) pivots a plurality of heat setting wheels (135), and the heat setting section (133) further includes a third temperature controller (137), the third temperature The governor (137) maintains each heat setting wheel (135) in a third temperature range; A take-up section (139) is disposed on one side of the heat-set section (133), and the take-up section (139) pivots a take-up reel (151). A sheet stretching mechanism comprising: an extruder (20) having a sheet die (80); a calendering section (82) disposed on the extruder (20) The side, calendering section (82) includes at least one guide wheel (84) pivoted adjacent the sheet die (80), and an adjacent two calender wheel (86), the calendering section (82) further comprising a a first temperature controller (90), the first temperature controller (90) maintains each of the guide wheels (84) and each of the calendering wheels (86) in a first temperature range; an extension section (111), is disposed On one side of the calendering section (82), the extension section (111) includes adjacent two low speed wheels (113) and at least one high speed wheel (115) having a higher rotational speed than the low speed wheel (113), the extended section (111) Further comprising a second temperature controller (131), the second temperature controller (131) maintaining each of the low speed wheels (113) and the high speed wheel (115) in a second temperature range; a heat setting section (133) a heat setting section (133) is disposed on one side of the extension section (111), and the heat setting section (133) further includes a third temperature controller (137). The third temperature controller (137) holds each heat setting wheel (135) Third temperature range; side of the roll receiving section (139), disposed in the heat setting section (133), the take-up section (139) pivoted to a roll of receiving wheel (151). The sheet stretching mechanism of claim 2, wherein the calendering section (82) further comprises a surface treating device (96), a surface treating device (96) ) is electrically connected to each of the calendering wheels (86).