A two-roller double-layer heat press machine

Abstract

This utility model discloses a two-roller double-layer structure heat-pressing machine, including a frame assembly comprising parallel frames A and B, and further including a support assembly, a guide roller assembly, a heat-pressing roller assembly, a traction roller assembly, a fabric support frame assembly, a corner wrapping roller assembly, and a fabric spreading roller assembly. This two-roller double-layer structure heat-pressing machine effectively solves the problems of heat-pressing the front and back sides of fabrics and the style of the pile surface, contributing to the promotion and application of new processes and products for pile fabrics. The two-roller double-layer structure heat-pressing machine is more efficient and intelligent, facilitating combined heat-pressing and combing, effectively solving the problem of difficult heat-pressing of the front and back pile surfaces of fabrics, greatly shortening the production process, reducing processes, and improving efficiency. The heat-pressing roller adopts an upper and lower structure design, facilitating the observation and inspection of the pile quality during production. The reasonable fabric feeding method is beneficial for heat-pressing the front and back sides of pile fabrics, solving the problem of combined heat-pressing and combing of the front and back sides.

Description

Technical Field

[0001] This utility model belongs to the technical field of velvet finishing equipment, specifically, it relates to a two-roller double-layer structure heat-pressing machine. Background Technology

[0002] With the changing demand for plush products both domestically and internationally, ordinary plush products can no longer meet consumer needs, and functional and innovative fabrics are gaining popularity. Traditional heat-pressing equipment will not be able to meet the implementation and application of new processes and technologies for special fabrics, especially double-sided plush fabrics. Traditional heat-pressing equipment requires one machine to heat the front side and one machine to heat the back side, and the fabric must be constantly turned over or turned over, which increases the difficulty and cycle of production.

[0003] No effective solutions have yet been proposed to address the problems in the relevant technologies.

[0004] Therefore, in order to solve the above problems, this utility model provides a two-roller double-layer structure heat pressing machine. Utility Model Content

[0005] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide a two-roller double-layer structure heat-pressing machine, which heats the front side with one heat-pressing roller and the back side with another heat-pressing roller, effectively solving the problem of heat-pressing the front and back sides of velvet fabrics in one go, shortening the process, reducing the number of steps, and increasing production capacity.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A two-roller double-layer structure heat pressing machine includes a frame assembly, which includes a frame A and a frame B that are parallel to each other, and also includes a support assembly, a guide roller assembly, a heat pressing roller assembly, a traction roller assembly, a fabric support frame assembly, a corner wrapping roller assembly, and a fabric spreading roller assembly.

[0008] The support assembly has four supports that are parallel to each other, which are used to stabilize frame A and frame B.

[0009] The guide roller assembly is provided with seven guide rollers for guiding the fabric, and the seven guide rollers are evenly distributed along the path of the fabric.

[0010] The heat-pressing roller assembly is equipped with two heat-pressing rollers that beat the two sides of the plush fabric to achieve heat pressing on the front and back of the fabric. The two heat-pressing rollers are parallel to each other and are distributed vertically within the frame assembly.

[0011] The traction roller assembly is equipped with four traction rollers for guiding the fabric forward, and the four traction rollers are parallel to each other.

[0012] The fabric support frame assembly has two sets of fabric support frames, which are arranged vertically and parallelly within the frame;

[0013] The corner roller assembly is equipped with two corner rollers that change the contact angle and area between the fabric and the heat-pressing roller to optimize the heat-pressing effect.

[0014] The spreading roller assembly has two spreading rollers for eliminating fabric wrinkles and ensuring uniform heat treatment.

[0015] Furthermore, the support assembly includes support A, support B, support C, and support D. The four supports are fixedly connected to frame A and frame B by bolts. Support A is located at the lower left corner of the frame assembly, support B is located at the lower right corner of the frame assembly, support C is located at the upper right side of the frame assembly, and support D is located at the upper left side of the frame assembly. The four supports are perpendicular to frame A and frame B.

[0016] Furthermore, the heat-curing roller assembly includes heat-curing roller A and heat-curing roller B. The two heat-curing rollers are fixed to frame A and frame B by bolts through bearing seats. Heat-curing roller A is located in the middle of the frame assembly, and heat-curing roller B is located in the upper part of the frame assembly.

[0017] Furthermore, the fabric support assembly includes fabric support A and fabric support B. The two sets of fabric support frames are fixed to the machine frame A and machine frame B by bolts through bearing seats. Fabric support A is located directly below the heat pressing roller A, and fabric support B is located directly below the heat pressing roller B. Fabric support A and fabric support B are parallel to the heat pressing roller A and heat pressing roller B, and the center vertical line of the upper plane of the fabric support is on the center vertical line of the heat pressing roller.

[0018] Furthermore, the traction roller assembly includes traction roller A, traction roller B, traction roller C, and traction roller D. The four traction rollers are fixed to frame A and frame B with bolts via bearing seats. Traction roller A is located on the lower left side of the fabric support frame A, traction roller B is located on the lower right side of the fabric support frame A, traction roller A and traction roller B are parallel to each other and parallel to the fabric support frame A. Traction roller D is located on the lower left side of the fabric support frame B, traction roller C is located on the lower right side of the fabric support frame B, traction roller D and traction roller C are parallel to each other and parallel to the fabric support frame B.

[0019] Furthermore, the guide roller assembly includes guide roller A, guide roller B, guide roller C, guide roller D, guide roller E, guide roller F, and guide roller G. The seven guide rollers are fixed to frame A and frame B by bolts through bearing seats. Guide roller A is located to the right of the lower left corner support A of the frame assembly. Guide roller B is located directly below traction roller A. Guide rollers C and D are located on the left and right sides below traction roller B. Guide roller E is located directly below traction roller C. Guide rollers F and G are located on the left and right sides below traction roller D. All guide rollers are parallel to each other, parallel to the traction roller, and perpendicular to frame A and frame B.

[0020] Furthermore, the corner roller assembly includes corner roller A and corner roller B. The two corner rollers are bolted to frame A and frame B via bearing seats. Corner roller A is positioned between fabric support frame A and traction roller B, higher than fabric support frame A and at the upper left corner of traction roller B. Corner roller A is relatively parallel to fabric support frame A and traction roller B. Corner roller B is positioned between fabric support frame B and traction roller D, higher than fabric support frame B and at the upper right corner of traction roller D. Corner roller B is relatively parallel to fabric support frame B and traction roller D.

[0021] Furthermore, the spreading roller assembly includes spreading roller A and spreading roller B. The two spreading rollers are fixed to frame A and frame B by bolts through bearing seats. Spreading roller A is located at the lower left corner of the frame assembly and between guide roller A and guide roller B, and is parallel to guide roller A and guide roller B. Spreading roller B is located in the middle right side of the frame assembly and below and to the right of guide roller E. Spreading roller B and guide roller E are relatively parallel.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In this utility model, the two-roller double-layer structure heat-pressing machine effectively solves the problems of heat-pressing the front and back of fabrics and the style of the napped surface, which helps to promote and apply new processes and products for napped fabrics; the two-roller double-layer structure heat-pressing machine is more efficient and intelligent, and facilitates combing and ironing in conjunction with other processes, effectively solving the problem of the difficulty of heat-pressing the front and back napped surfaces of fabrics, greatly shortening the production process, reducing processes, and improving efficiency.

[0024] 2. In this utility model, the heat-pressing roller adopts an upper and lower structure design, which makes it easy to observe and inspect the quality of the plush fabric during the production process. The reasonable fabric feeding method is conducive to the heat-pressing treatment of both sides of the plush fabric, and solves the problem of the front and back combing and ironing in conjunction with the machine. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0027] Figure 2 This is the second structural schematic diagram of the present invention.

[0028] Figure label:

[0029] 1. Frame assembly; 1-1. Frame A; 1-2. Frame B; 2. Support assembly; 2-1. Support A; 2-2. Support B; 2-3. Support C; 2-4. Support D; 3. Guide roller assembly; 3-1. Guide roller A; 3-2. Guide roller B; 3-3. Guide roller C; 3-4. Guide roller D; 3-5. Guide roller E; 3-6. Guide roller F; 3-7. Guide roller G; 4. Heat setting roller assembly ; 4-1, Heat-pressing roller A; 4-2, Heat-pressing roller B; 5, Traction roller assembly; 5-1, Traction roller A; 5-2, Traction roller B; 5-3, Traction roller C; 5-4, Traction roller D; 6, Fabric support frame assembly; 6-1, Fabric support frame A; 6-2, Fabric support frame B; 7, Corner wrapping roller assembly; 7-1, Corner wrapping roller A; 7-2, Corner wrapping roller B; 8, Fabric spreading roller assembly; 8-1, Fabric spreading roller A; 8-2, Fabric spreading roller B. Detailed Implementation

[0030] The utility model will now be further described with reference to the accompanying drawings and specific embodiments:

[0031] Please see Figure 1 and Figure 2 According to an embodiment of the present utility model, a two-roller double-layer structure heat-pressing machine includes a frame assembly 1, which includes a frame A1-1 and a frame B1-2 that are parallel to each other, and also includes a support assembly 2, a guide roller assembly 3, a heat-pressing roller assembly 4, a traction roller assembly 5, a fabric support frame assembly 6, a corner wrapping roller assembly 7, and a spreading roller assembly 8.

[0032] Please see Figure 2 The support assembly 2 has four supports that are parallel to each other, which are used to stabilize the frame A1-1 and the frame B1-2.

[0033] Please see Figure 2 The guide roller assembly 3 is equipped with seven guide rollers, which are evenly distributed along the path of the fabric. The guide rollers are not only responsible for guiding the path of the fabric, but also participate in the process of maintaining the smoothness of the fabric and improving the heat-pressing effect.

[0034] Please see Figure 1 The heat-pressing roller assembly 4 is equipped with two heat-pressing rollers, which are parallel to each other and distributed vertically within the frame assembly 1. The heat-pressing rollers work in conjunction with the fabric support frame on the machine body to form a high-temperature and high-pressure zone, providing the core conditions for material surface treatment. The heating system built into the heat-pressing rollers (such as electric heating tubes and heat exchangers) can quickly reach and maintain the temperature required for the process, while the precise contact between the heat-pressing rollers and the fabric support frame ensures that the pressure is applied evenly to the material surface. When fabrics and other materials pass between the two, the surface fibers or textures loosen and fuse under the action of high temperature and pressure, achieving smoothing treatment and gloss enhancement.

[0035] Please see Figure 2The traction roller assembly 5 is equipped with four traction rollers, which are parallel to each other and used to guide the fabric forward.

[0036] Please see Figure 2 The fabric support assembly 6 has two sets of fabric support frames, which are arranged vertically and horizontally within the frame. The two sets of fabric support frames can support the fabric (ensure that the fabric remains flat when entering and leaving the heat-pressing area, avoiding sagging or wrinkles caused by gravity or other factors, thereby ensuring the uniformity and consistency of the heat-pressing effect), guide the fabric (ensure that the fabric moves along the correct path), and adjust the tension (appropriate tension adjustment can prevent the fabric from slipping or being overstretched during the heat-pressing process, thereby protecting the fabric from damage and ensuring the accuracy of the heat-pressing effect).

[0037] Please see Figure 2 The corner roller assembly 7 is equipped with two corner rollers, the angle of which can be adjusted to change the contact angle and area between the fabric and the heat-pressing roller, thereby optimizing the heat-pressing effect.

[0038] Please see Figure 2 The fabric spreading roller assembly 8 is equipped with two fabric spreading rollers. The fabric spreading rollers can eliminate fabric wrinkles and ensure uniform heat treatment. Specifically, the fabric spreading rollers apply lateral tension to the fabric during the fabric conveying process through special surface textures (such as spiral or radial) or elastic structures, forcibly flattening the wrinkled and layered fabric.

[0039] Please see Figure 1 and Figure 2 The support assembly 2 includes support A2-1, support B2-2, support C2-3 and support D2-4. The four supports are fixedly connected to the frame A1-1 and the frame B1-2 by bolts. Support A2-1 is located at the lower left corner of the frame assembly 1, support B2-2 is located at the lower right corner of the frame assembly 1, support C2-3 is located at the upper right side of the frame assembly 1, and support D2-4 is located at the upper left side of the frame assembly 1. The four supports are perpendicular to the frame A1-1 and the frame B1-2.

[0040] Please see Figure 1 and Figure 2 The heat-curing roller assembly 4 includes heat-curing roller A4-1 and heat-curing roller B4-2. The two heat-curing rollers are fixed to the frame A1-1 and the frame B1-2 by bolts through bearing seats. Heat-curing roller A4-1 is located in the middle of the frame assembly 1, and heat-curing roller B4-2 is located in the upper part of the frame assembly 1.

[0041] Please see Figure 1 and Figure 2The fabric support assembly 6 includes fabric support A6-1 and fabric support B6-2. The two sets of fabric support frames are fixed to the machine frame A1-1 and machine frame B1-2 by bolts through bearing seats. Fabric support A6-1 is located directly below the heat pressing roller A4-1, and fabric support B6-2 is located directly below the heat pressing roller B4-2. Fabric support A6-1 and fabric support B6-2 are parallel to the heat pressing roller A4-1 and heat pressing roller B4-2, and the center vertical line of the upper plane of the fabric support frame is on the center vertical line of the heat pressing roller.

[0042] Please see Figure 1 and Figure 2 The traction roller assembly 5 includes traction roller A5-1, traction roller B5-2, traction roller C5-3, and traction roller D5-4. The four traction rollers are fixed to the frame A1-1 and frame B1-2 by bolts through bearing seats. Traction roller A5-1 is located on the lower left side of the fabric support frame A6-1, and traction roller B5-2 is located on the lower right side of the fabric support frame A6-1. Traction rollers A5-1 and B5-2 are parallel to each other and parallel to the fabric support frame A6-1. Traction roller D5-4 is located on the lower left side of the fabric support frame B6-2, and traction roller C5-3 is located on the lower right side of the fabric support frame B6-2. Traction rollers D5-4 and C5-3 are parallel to each other and parallel to the fabric support frame B6-2.

[0043] Please see Figure 1 and Figure 2 The guide roller assembly 3 includes guide rollers A3-1, B3-2, C3-3, D3-4, E3-5, F3-6, and G3-7. The seven guide rollers are fixed to the frame A1-1 and frame B1-2 by bolts through bearing seats. Guide roller A3-1 is located to the right of the lower left corner support A2-1 of the frame assembly 1. Guide roller B3-2 is located directly below the traction roller A5-1. Guide rollers C3-3 and D3-4 are located on the left and right sides below the traction roller B5-2. Guide roller E3-5 is located directly below the traction roller C5-3. Guide rollers F3-6 and G3-7 are located on the left and right sides below the traction roller D5-4. All guide rollers are parallel to each other, parallel to the traction roller, and perpendicular to the frame A1-1 and frame B1-2.

[0044] Please see Figure 1 and Figure 2The corner roller assembly 7 includes corner roller A7-1 and corner roller B7-2. The two corner rollers are bolted to the frame A1-1 and the frame B1-2 through bearing seats. Corner roller A7-1 is positioned between the fabric support frame A6-1 and the traction roller B5-2, higher than the fabric support frame A6-1 and at the upper left corner of the traction roller B5-2. Corner roller A7-1 is relatively parallel to the fabric support frame A6-1 and the traction roller B5-2. Corner roller B7-2 is positioned between the fabric support frame B6-2 and the traction roller D5-4, higher than the fabric support frame B6-2 and at the upper right corner of the traction roller D5-4. Corner roller B7-2 is relatively parallel to the fabric support frame B6-2 and the traction roller D5-4.

[0045] Please see Figure 1 and Figure 2 The spreading roller assembly 8 includes spreading roller A8-1 and spreading roller B8-2. The two spreading rollers are fixed to the frame A1-1 and frame B1-2 by bolts through bearing seats. Spreading roller A8-1 is located at the lower left corner of the frame assembly 1, between the guide roller A3-1 and guide roller B3-2, and parallel to the guide roller A3-1 and guide roller B3-2. Spreading roller B8-2 is located in the middle right side of the frame assembly 1, and below the right side of the guide roller E3-5. Spreading roller B8-2 and guide roller E3-5 are relatively parallel.

[0046] The working principle of a two-roller double-layer structure heat-pressing machine is as follows: The plush fabric passes through guide rollers A3-1 and B3-2, where a motor-driven spreading roller A8-1 smooths the fabric's nap. Then, a motor-driven traction roller A5-1 feeds the fabric into a support frame A6-1. Finally, the motor-driven support frame A6-1 and traction roller B5-2 guide the fabric out. During the fabric's entry and exit, the motor-driven heat-pressing roller rotates at high speed, while the support frame A6-1 and heat-pressing roller A4-1 press the fabric. The angle of the corner roller A7-1 is adjusted to achieve a heat-pressing effect on the front side of the fabric. Then, the plush fabric passes through guide roller C3-1... -3. Guide rollers D3-4 and F3-5, driven by a motor, flatten the reverse side of the fabric using spreading roller B8-2. Then, driven by a motor, traction roller C5-3 feeds the fabric into support frame B6-2. Finally, driven by a motor, support frame B6-2 and traction roller D5-4 pull the fabric out. During the fabric's entry and exit, the motor drives the heat-pressing roller to rotate at high speed. At the same time, support frame B6-2 and heat-pressing roller B4-2 squeeze the fabric. Adjusting the size of corner roller B7-2 achieves the heat-pressing effect on the reverse side of the fabric. By continuously patting both sides of the plush fabric with two heat-pressing rollers, the heat-pressing effect on both sides of the fabric is achieved.

[0047] The motor-driven heat-pressing rollers, traction rollers, fabric support frames, corner wrapping rollers, and fabric spreading rollers mentioned above are all common technologies in existing heat-pressing machines, so they are not described in detail here.

[0048] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0049] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A two-roller double-layer heat press machine, comprising a frame assembly (1), said frame assembly (1) comprising parallel frames A (1-1) and B (1-2), characterized in that, It also includes a support assembly (2), a guide roller assembly (3), a heat-pressing roller assembly (4), a traction roller assembly (5), a fabric support frame assembly (6), a corner wrapping roller assembly (7), and a spreading roller assembly (8); The support assembly (2) is provided with four supports, which are parallel to each other and are used to stabilize the frame A (1-1) and the frame B (1-2); The guide roller assembly (3) is provided with seven guide rollers for guiding the fabric, and the seven guide rollers are evenly distributed along the path of the fabric. The heat-pressing roller assembly (4) is provided with two heat-pressing rollers that beat the two sides of the plush fabric to achieve heat-pressing of the front and back sides of the fabric. The two heat-pressing rollers are parallel to each other and are distributed vertically within the frame assembly (1). The traction roller assembly (5) is provided with four traction rollers for guiding the fabric forward, and the four traction rollers are parallel to each other. The fabric support assembly (6) is provided with two sets of fabric support frames, which are arranged vertically and horizontally within the frame; The corner roller assembly (7) is provided with two corner rollers that change the contact angle and area between the fabric and the heat-pressing roller and optimize the heat-pressing effect. The spreading roller assembly (8) is equipped with two spreading rollers for eliminating fabric wrinkles and ensuring uniform heat treatment.

2. A two-roll double-layer structure calender according to claim 1, wherein The support assembly (2) includes support A (2-1), support B (2-2), support C (2-3) and support D (2-4). The four supports are fixedly connected to the frame A (1-1) and the frame B (1-2) by bolts. Support A (2-1) is located at the lower left corner of the frame assembly (1), support B (2-2) is located at the lower right corner of the frame assembly (1), support C (2-3) is located at the upper right side of the frame assembly (1), and support D (2-4) is located at the upper left side of the frame assembly (1). The four supports are perpendicular to the frame A (1-1) and the frame B (1-2).

3. A two-roll double-layer structure calender according to claim 2, wherein The heat-curing roller assembly (4) includes heat-curing roller A (4-1) and heat-curing roller B (4-2). The two heat-curing rollers are fixed to the frame A (1-1) and the frame B (1-2) by bolts through bearing seats. The heat-curing roller A (4-1) is located in the middle of the frame assembly (1), and the heat-curing roller B (4-2) is located in the upper part of the frame assembly (1).

4. A two-roll double-layer structure calender according to claim 3, wherein The fabric support assembly (6) includes a fabric support A (6-1) and a fabric support B (6-2). The two sets of fabric support frames are fixed to the machine frame A (1-1) and the machine frame B (1-2) by bolts through bearing seats. The fabric support A (6-1) is located directly below the heat pressing roller A (4-1), and the fabric support B (6-2) is located directly below the heat pressing roller B (4-2). The fabric support A (6-1) and the fabric support B (6-2) are parallel to the heat pressing roller A (4-1) and the heat pressing roller B (4-2), and the center vertical line of the upper plane of the fabric support is on the center vertical line of the heat pressing roller.

5. A two-roller double-layer structure heat press machine according to claim 4, characterized in that, The traction roller assembly (5) includes traction roller A (5-1), traction roller B (5-2), traction roller C (5-3), and traction roller D (5-4). The four traction rollers are fixed to the frame A (1-1) and the frame B (1-2) by bolts through bearing seats. The traction roller A (5-1) is located on the lower left side of the fabric support frame A (6-1), and the traction roller B (5-2) is located on the lower right side of the fabric support frame A (6-1). The traction rollers A (5-1) and B (5-2) are parallel to each other and parallel to the fabric support frame A (6-1). The traction roller D (5-4) is located on the lower left side of the fabric support frame B (6-2), and the traction roller C (5-3) is located on the lower right side of the fabric support frame B (6-2). The traction rollers D (5-4) and C (5-3) are parallel to each other and parallel to the fabric support frame B (6-2).

6. A two-roll, double-layer structure calender according to claim 5, wherein The guide roller assembly (3) includes guide roller A (3-1), guide roller B (3-2), guide roller C (3-3), guide roller D (3-4), guide roller E (3-5), guide roller F (3-6), and guide roller G (3-7). The seven guide rollers are bolted to frame A (1-1) and frame B (1-2) via bearing seats. Guide roller A (3-1) is positioned to the right of the lower left corner support A (2-1) of the frame assembly (1). Guide roller B (3-2), guide roller C (3-3), guide roller D (3-4), guide roller E (3-5), guide roller F (3-6), and guide roller G (3-7) are also present. 3-2) The guide rollers are positioned directly below the traction roller A (5-1), the guide rollers C (3-3) and D (3-4) are positioned on the left and right sides below the traction roller B (5-2), the guide roller E (3-5) is positioned directly below the traction roller C (5-3), and the guide rollers F (3-6) and G (3-7) are positioned on the left and right sides below the traction roller D (5-4). All the guide rollers are parallel to each other and parallel to the traction rollers, and perpendicular to the frame A (1-1) and the frame B (1-2).

7. A two-roll, double-layer structure calender according to claim 6, wherein The corner roller assembly (7) includes corner roller A (7-1) and corner roller B (7-2). The two corner rollers are bolted to frame A (1-1) and frame B (1-2) through bearing seats. Corner roller A (7-1) is located between fabric support frame A (6-1) and traction roller B (5-2), higher than fabric support frame A (6-1) and at the upper left corner of traction roller B (5-2). Corner roller A (7-1) is relatively parallel to fabric support frame A (6-1) and traction roller B (5-2). Corner roller B (7-2) is located between fabric support frame B (6-2) and traction roller D (5-4), higher than fabric support frame B (6-2) and at the upper right corner of traction roller D (5-4). Corner roller B (7-2) is relatively parallel to fabric support frame B (6-2) and traction roller D (5-4).

8. A two-roll double-layer structure calender according to claim 7, wherein The spreading roller assembly (8) includes spreading roller A (8-1) and spreading roller B (8-2). The two spreading rollers are fixed to the frame A (1-1) and the frame B (1-2) by bolts through bearing seats. Spreading roller A (8-1) is located at the lower left corner of the frame assembly (1) and between the guide roller A (3-1) and the guide roller B (3-2), and is parallel to the guide roller A (3-1) and the guide roller B (3-2). Spreading roller B (8-2) is located in the middle of the right side of the frame assembly (1) and below the right side of the guide roller E (3-5). Spreading roller B (8-2) and guide roller E (3-5) are relatively parallel.

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