A surface layer and interlayer base paper partitioning processing equipment

Abstract

This utility model provides a processing device for the surface layer and interlayer base paper in a separate section, belonging to the field of tissue paper processing technology, to solve the problem of difficulty in simultaneously processing the surface layer and interlayer base paper in separate sections; it includes a support platform; a support frame is fixedly installed on one side of the top of the support platform, and a processing structure is fixedly installed on the inner side of the support frame, and the processing structure is arranged in a straight line with three points; a tension control component is fixedly installed on one side of the support frame; a composite mechanism is fixedly installed on the other side of the top of the support platform, and transmission components are fixedly installed on the outer side of both the composite mechanism and the processing structure; by setting up three processing structures arranged in a straight line, the surface layer, the bottom layer and the interlayer layer can be processed simultaneously in separate sections; the surface layer and the bottom layer can be calendered, and the interlayer layer can be embossed; compared with the traditional equipment that requires multiple machines to operate in sequence, the production cycle is greatly shortened.

Description

Technical Field

[0001] This utility model belongs to the field of household paper processing technology, and more specifically, it relates to a processing equipment for the surface layer and the interlayer base paper. Background Technology

[0002] In daily life, household paper is an indispensable consumable, usually divided into a surface layer and a middle layer. In the processing stage, different functional layers of paper need to undergo specific treatments, such as improving the softness and texture of the surface layer, and strengthening the middle layer.

[0003] Most existing processing equipment has only one function and lacks the ability to process the surface layer and the middle layer of base paper in separate sections according to their different characteristics and processing requirements. As a result, in order to complete the comprehensive processing of the surface layer and the middle layer of base paper, it is necessary to rely on multiple machines with different functions to operate in a specific order. This increases the cost of purchasing equipment and occupies a lot of limited production space due to the simultaneous layout of multiple machines. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a processing device for separating the surface layer and the interlayer base paper, thereby resolving the issue of difficulty in simultaneously processing the surface layer and the interlayer base paper in separate sections, as mentioned in the background art.

[0005] This utility model discloses a surface layer and interlayer paper partitioning processing device, which is achieved by the following specific technical means: A surface layer and interlayer paper partitioning processing device includes a support platform; a support frame is fixedly installed on one side of the top of the support platform, and a processing structure is fixedly installed inside the support frame, with three processing structures arranged in a straight line; a tension control component is fixedly installed on one side of the support frame, with three tension control components arranged in a straight line; a composite mechanism is fixedly installed on the other side of the top of the support platform, and transmission components are fixedly installed on the outer sides of both the composite mechanism and the processing structures; the top layer, interlayer layer and bottom layer are transferred between the three processing structures, the three tension control components and the composite mechanism. The processing structure includes: a fixed frame, a lower pressure roller, cylinder A, a sliding seat, an upper pressure roller, and a bevel gear A; the fixed frame is fixedly installed inside both sides of the support frame; the lower pressure roller is rotatably installed inside the bottom side of the fixed frame; cylinder A is fixedly installed on both sides of the top of the fixed frame; the sliding seat is slidably installed inside the fixed frame through a dovetail groove, and the sliding seat is fixedly connected to the telescopic end of cylinder A; the upper pressure roller is rotatably installed inside the sliding seat, and the upper pressure roller and the lower pressure roller respectively convey the upper layer, the middle layer, and the lower layer; the bevel gear A is fixedly installed at the top of the upper pressure roller and the lower pressure roller respectively.

[0006] Furthermore, the tension control assembly includes: a control frame and guide rollers; the control frame is fixedly installed on the outside of the support frame, and six sets of control frames are symmetrically arranged; the guide rollers are rotatably installed between two sets of control frames.

[0007] Furthermore, the tension control assembly also includes: a fixed cylinder, an electromagnet, a sliding column, a baffle, a magnetic block, a tension seat, and a tension roller; the fixed cylinder is fixedly mounted on the top of the control frame; the electromagnet is fixedly mounted on the bottom inner side of the fixed cylinder; the sliding column is slidably mounted inside the top side of the fixed cylinder; the baffle is fixedly mounted on the bottom end of the sliding column; the magnetic block is fixedly mounted on the bottom of the baffle, and the magnetic block and the electromagnet repel each other; the tension seat is fixedly mounted on the top end of the sliding column; the end of the tension roller is rotatably mounted inside the tension seat, and the tension roller and the guide roller convey the upper layer, the middle layer, and the lower layer.

[0008] Furthermore, the composite mechanism includes: a composite frame, a lower composite roller, cylinder B, a pressure seat, an upper composite roller, and a bevel gear B; the composite frame is fixedly installed on the other side of the top of the support platform; the lower composite roller is rotatably installed inside the composite frame; cylinder B is fixedly installed on both sides of the top of the composite frame; the pressure seat is slidably installed inside both sides of the composite frame through dovetail grooves, and the extension and retraction ends of the pressure seat and cylinder B are fixedly connected; the upper composite roller is rotatably installed inside the pressure seat, and an upper layer, a middle layer, and a lower layer are pressed between the upper composite roller and the lower composite roller; the bevel gear B is fixedly installed at the ends of the lower composite roller and the upper composite roller respectively.

[0009] Furthermore, the transmission assembly includes: a fixed base, a transmission shaft, a transmission bar, and a transmission bevel gear A; the fixed base is fixedly installed on the outside of the fixed frame and the composite frame respectively; the transmission shaft is rotatably installed inside the fixed base, and the transmission shaft is fixedly installed on the shaft end of the motor device, and the motor device is fixedly installed on the top of the fixed base; the transmission bar is fixedly installed on both sides of the transmission shaft; the transmission bevel gear A is fixedly installed at the bottom end of the transmission shaft, and the transmission bevel gear A meshes with the bevel gear A at the top of the lower pressure roller and the bevel gear B at the top of the lower composite roller respectively.

[0010] Furthermore, the transmission assembly also includes: an auxiliary seat, a rotating cylinder, a transmission groove, and a transmission bevel gear B; the auxiliary seat is fixedly installed on the outside of the sliding seat and the pressure seat respectively; the rotating cylinder is rotatably installed inside the auxiliary seat and is movably installed on the outside of the transmission shaft; the transmission groove is opened inside the rotating cylinder, and a transmission bar is slidably installed inside the transmission groove; the transmission bevel gear B is fixedly installed on the top of the rotating cylinder, and the transmission bevel gear B and the transmission bevel gear A are symmetrically arranged, and the transmission bevel gear B meshes with the bevel gear A at the top of the upper pressure roller and the bevel gear B at the top of the upper composite roller respectively.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, by setting up three processing structures arranged in a straight line, the upper layer, the lower layer, and the middle layer can be processed synchronously in separate areas; the upper and lower layers can be calendered, and the middle layer can be embossed; compared with the traditional equipment that requires multiple machines to operate in sequence, the production cycle is greatly shortened, the parallel processing of the production process is realized, the overall production efficiency is significantly improved, and the needs of mass production are met.

[0012] 2. In this utility model, by means of the mutual repulsion between the electromagnet and the magnetic block, the tension of the tension roller can be adjusted by adjusting the magnetic force of the electromagnet, thereby controlling the tension of the upper layer, the middle layer and the lower layer; stable tension can avoid problems such as wrinkles and stretching deformation of paper during processing, and ensure the flatness and surface quality of the paper.

[0013] 3. In this utility model, the descent distance of the pressure seat can be precisely controlled by cylinder B, thereby adjusting the composite pressure between the upper and lower composite rollers; this adjustable composite pressure can ensure that the upper layer, the middle layer and the lower layer are uniformly and tightly bonded together, enhancing the overall bonding strength of the paper and improving the durability and performance of the product. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the three processing structures and three tension control components of this utility model.

[0016] Figure 3 This is a schematic diagram of the connection structure between the processing structure and the transmission component of this utility model.

[0017] Figure 4 This is a schematic diagram of the transmission component of this utility model.

[0018] Figure 5 This is a schematic diagram of the rotating cylinder of this utility model.

[0019] Figure 6 This is a structural schematic diagram of the tension control component of this utility model.

[0020] Figure 7 This is a schematic diagram of the connection structure between the composite mechanism and the transmission component of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Support platform; 101. Support frame; 2. Processing structure; 201. Fixing frame; 202. Lower pressure roller; 203. Cylinder A; 204. Sliding seat; 205. Upper pressure roller; 206. Bevel gear A; 3. Tension control assembly; 301. Control frame; 302. Guide roller; 303. Fixed cylinder; 304. Electromagnet; 305. Sliding column; 306. Baffle; 307. Magnetic block; 308. Tension seat; 309. Tension roller; 4. Composite mechanism; 401. Composite frame; 402. Lower composite roller; 403. Cylinder B; 404. Pressure seat; 405. Upper composite roller; 406. Bevel gear B; 5. Transmission assembly; 501. Fixed base; 502. Transmission shaft; 503. Transmission bar; 504. Transmission bevel gear A; 505. Auxiliary base; 506. Rotating cylinder; 507. Transmission groove; 508. Transmission bevel gear B; 6. Top layer; 7. Middle layer; 8. Lower layer. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0023] Example 1: As shown in the attached document Figure 1 To be continued Figure 7 As shown: This utility model provides a surface layer and interlayer paper partitioning processing device, including a support platform 1; a support frame 101 is fixedly installed on one side of the top of the support platform 1, and a processing structure 2 is fixedly installed on the inner side of the support frame 101, and three processing structures 2 are arranged in a straight line; a tension control component 3 is fixedly installed on one side of the support frame 101, and three tension control components 3 are arranged in a straight line; a composite mechanism 4 is fixedly installed on the other side of the top of the support platform 1, and transmission components 5 are fixedly installed on the outer side of both the composite mechanism 4 and the processing structure 2; the top layer 6, the interlayer layer 7, and the bottom layer 8 are conveyed between the three processing structures 2, the three tension control components 3, and the composite mechanism 4; In this embodiment, the processing structure 2 includes: a fixed frame 201, a lower pressure roller 202, a cylinder A203, a sliding seat 204, an upper pressure roller 205, and a bevel gear A206; the fixed frame 201 is fixedly disposed inside both sides of the support frame 101; the lower pressure roller 202 is rotatably disposed inside the bottom side of the fixed frame 201; the cylinder A203 is fixedly disposed on both sides of the top of the fixed frame 201; the sliding seat 204 is slidably disposed inside the fixed frame 201 through a dovetail groove, and the sliding seat 204 is fixedly connected to the telescopic end of the cylinder A203; the upper pressure roller 205 is rotatably disposed inside the sliding seat 204, and the upper pressure roller 205 and the lower pressure roller 202 are respectively The conveyor comprises an upper layer 6, a middle layer 7, and a lower layer 8; bevel gears A206 are fixedly mounted on the top ends of the upper pressure roller 205 and the lower pressure roller 202, respectively; the transmission assembly 5 includes: a fixed base 501, a transmission shaft 502, a transmission bar 503, a transmission bevel gear A504, an auxiliary base 505, a rotating cylinder 506, a transmission groove 507, and a transmission bevel gear B508; the fixed base 501 is fixedly mounted on the outside of the fixed frame 201 and the composite frame 401, respectively; the transmission shaft 502 is rotatably mounted inside the fixed base 501, and the transmission shaft 502 is fixedly mounted on the shaft end of the motor device, and the motor device is fixedly mounted on the top of the fixed base 501; transmission Strip 503 is fixedly installed on both sides of drive shaft 502; drive bevel gear A504 is fixedly installed at the bottom end of drive shaft 502, and drive bevel gear A504 meshes with bevel gear A206 at the top end of lower pressure roller 202 and bevel gear B406 at the top end of lower composite roller 402 respectively; auxiliary seat 505 is fixedly installed on the outside of sliding seat 204 and pressure seat 404 respectively; rotating cylinder 506 is rotatably installed inside auxiliary seat 505, and rotating cylinder 506 is movably installed on the outside of drive shaft 502; drive groove 507 is opened inside rotating cylinder 506, and drive strip 503 is slidably installed inside drive groove 507; drive bevel gear B503 is fixedly installed on both sides of drive shaft 502; drive bevel gear B504 is fixedly installed at the bottom end of drive shaft 502, and drive bevel gear B504 is fixedly installed on both sides of drive shaft 502; drive bevel gear A206 is fixedly installed at the bottom end of drive shaft 502, and drive bevel gear B504 is fixedly installed on both sides ... 08 is fixedly installed on the top of the rotating cylinder 506, and the transmission bevel gear B508 and transmission bevel gear A504 are symmetrically arranged. The transmission bevel gear B508 meshes with the bevel gear A206 at the top of the upper pressure roller 205 and the bevel gear B406 at the top of the upper composite roller 405, respectively. Its specific function is: by setting three processing structures 2 arranged in a straight line, the upper layer 6, the lower layer 8 and the middle layer 7 can be processed synchronously in sections. The upper layer 6 and the lower layer 8 can be calendered, and the middle layer 7 can be embossed. Compared with the traditional equipment that requires multiple machines to operate in sequence, the production cycle is greatly shortened.

[0024] Example 2: As shown in the attached document Figure 2 With appendix Figure 6As shown: Based on Embodiment 1, the tension control assembly 3 includes: a control frame 301, a guide roller 302, a fixed cylinder 303, an electromagnet 304, a sliding column 305, a baffle 306, a magnetic block 307, a tension seat 308, and a tension roller 309; the control frame 301 is fixedly disposed on the outside of the support frame 101, and six sets of control frames 301 are symmetrically arranged; the guide roller 302 is rotatably disposed between two sets of control frames 301; the fixed cylinder 303 is fixedly disposed on the top of the control frame 301; the electromagnet 304 is fixedly disposed on the bottom inner side of the fixed cylinder 303; the sliding column 305 is slidably disposed inside the top side of the fixed cylinder 303; the baffle 306 is fixedly disposed on the sliding column 305. 5. Bottom end; Magnetic block 307 is fixedly set at the bottom of baffle 306, and magnetic block 307 and electromagnet 304 repel each other; tension seat 308 is fixedly set at the top of sliding column 305; tension roller 309 is rotatably set inside tension seat 308, and upper layer 6, middle layer 7 and lower layer 8 are conveyed between tension roller 309 and guide roller 302; its specific function is: through the mutual repulsion between electromagnet 304 and magnetic block 307, the repulsive force between electromagnet 304 and magnetic block 307 can be changed by adjusting the magnetic force of electromagnet 304, thereby adjusting the tension of tension roller 309, and thus controlling the tension of upper layer 6, middle layer 7 and lower layer 8.

[0025] Example 3: As shown in the attached document Figure 1 With appendix Figure 7 As shown: Based on Embodiments 1 and 2, the composite mechanism 4 includes: a composite frame 401, a lower composite roller 402, a cylinder B403, a pressure seat 404, an upper composite roller 405, and a bevel gear B406; the composite frame 401 is fixedly mounted on the other side of the top of the support platform 1; the lower composite roller 402 is rotatably mounted inside the composite frame 401; the cylinder B403 is fixedly mounted on both sides of the top of the composite frame 401; the pressure seat 404 is slidably mounted inside both sides of the composite frame 401 through dovetail grooves, and the pressure seat 404 is fixedly connected to the telescopic end of the cylinder B403; the upper composite roller 405 rotates... The upper composite layer 6, the middle layer 7, and the lower composite layer 8 are pressed together between the upper composite roller 405 and the lower composite roller 402, and the bevel gear B406 is fixedly installed at the ends of the lower composite roller 402 and the upper composite roller 405, respectively. Its specific function is to precisely control the descent distance of the pressure seat 404 through the cylinder B403, thereby adjusting the composite pressure between the upper composite roller 405 and the lower composite roller 402. This adjustable composite pressure can ensure that the upper layer 6, the middle layer 7, and the lower layer 8 are uniformly and tightly bonded together, thereby enhancing the overall bonding strength of the paper.

[0026] The specific usage and function of this embodiment are as follows: In this invention, the dried upper layer 6, middle layer 7, and lower layer 8 are introduced between the upper pressure roller 205 and the lower pressure roller 202, and between the guide roller 302 and the tension roller 309, respectively, and finally fed between the upper composite roller 405 and the lower composite roller 402. Then, the motor is started to drive the transmission shaft 502 to rotate. The transmission shaft 502 drives the rotating cylinder 506 to rotate through the transmission bar 503 and the transmission groove 507, so that the transmission bevel gear A504 and the transmission bevel gear B508 pass through the bevel gear. The bevel gear A206 drives the upper pressure roller 205 and the lower pressure roller 202 to rotate synchronously in opposite directions; simultaneously, the transmission component 5 on the outside of the composite frame 401 drives the upper composite roller 405 and the lower composite roller 402 to rotate synchronously in opposite directions via the bevel gear B406; as the upper pressure roller 205, the lower pressure roller 202, the upper composite roller 405, and the lower composite roller 402 rotate, the upper layer 6, the middle layer 7, and the lower layer 8 are conveyed forward in the equipment; under the action of the cylinder A203 and the sliding seat 204, the upper pressure roller 205 rotates according to the set... The pressure, in conjunction with the lower pressure roller 202, calenders the upper layer 6 and the lower layer 8, making their surfaces smooth and flat; it embosses the middle layer 7 to form the desired texture pattern; during paper transport, the tension roller 309 controls the tension changes of the paper; by adjusting the magnetic force of the electromagnet 304, the repulsive force between the electromagnet 304 and the magnetic block 307 changes accordingly, thereby adjusting the tension of the tension roller 309, thus controlling the tension of the upper layer 6, the middle layer 7, and the lower layer 8; [The text abruptly ends here, likely due to an incomplete translation or source material.] Under the action of cylinder B403 and pressure seat 404, the bonding roller 405 cooperates with the lower bonding roller 402 according to the set bonding pressure to tightly bond the three layers of paper: the upper layer 6, the middle layer 7, and the lower layer 8, forming the final product. When cylinder A203 drives the upper pressure roller 205 to move up and down through the sliding seat 204 and cylinder B403 drives the upper bonding roller 405 to move up and down through the pressure seat 404, the rotating cylinder 506 slides up and down on the outside of the drive shaft 502 through the auxiliary seat 505.

Claims

1. A surface layer and interleaf base paper zonal processing apparatus, characterized by, include: Support platform (1); a support frame (101) is fixedly installed on one side of the top of the support platform (1), and a processing structure (2) is fixedly installed on the inner side of the support frame (101), and three processing structures (2) are arranged in a straight line; a tension control component (3) is fixedly installed on one side of the support frame (101), and three tension control components (3) are arranged in a straight line; a composite mechanism (4) is fixedly installed on the other side of the top of the support platform (1), and a transmission component (5) is fixedly installed on the outer side of both the composite mechanism (4) and the processing structure (2); the upper layer (6), the middle layer (7), and the lower layer (8) are transmitted between the three processing structures (2), the three tension control components (3), and the composite mechanism (4); The processing structure (2) includes: a fixed frame (201), a lower pressure roller (202), a cylinder A (203), a sliding seat (204), an upper pressure roller (205), and a bevel gear A (206); the fixed frame (201) is fixedly installed inside both sides of the support frame (101); the lower pressure roller (202) is rotatably installed inside the bottom side of the fixed frame (201); the cylinder A (203) is fixedly installed on both sides of the top of the fixed frame (201); the sliding seat (204) The dovetail groove is slidably set inside the fixed frame (201), and the sliding seat (204) is fixedly connected to the telescopic end of the cylinder A (203); the upper pressure roller (205) is rotatably set inside the sliding seat (204), and the upper pressure roller (205) and the lower pressure roller (202) respectively convey the upper layer (6), the middle layer (7) and the lower layer (8); the bevel gear A (206) is fixedly set at the top of the upper pressure roller (205) and the lower pressure roller (202).

2. A face ply and core ply zonal processing apparatus according to claim 1, characterised in that: The tension control assembly (3) includes: a control frame (301) and a guide roller (302); the control frame (301) is fixedly installed on the outside of the support frame (101), and six sets of control frames (301) are symmetrically arranged; the guide roller (302) is rotatably arranged between two sets of control frames (301).

3. The surface layer and interlayer paper partitioning processing equipment according to claim 2, characterized in that: The tension control assembly (3) further includes: a fixed cylinder (303), an electromagnet (304), a sliding column (305), a baffle (306), a magnetic block (307), a tension seat (308), and a tension roller (309); the fixed cylinder (303) is fixedly mounted on the top of the control frame (301); the electromagnet (304) is fixedly mounted on the bottom inner side of the fixed cylinder (303); the sliding column (305) is slidably mounted inside the top side of the fixed cylinder (303); the baffle (306) is fixedly mounted on the bottom inner side of the fixed cylinder (303); the magnetic block (307) is slidably mounted on the top side of the fixed cylinder (308); the magnetic block (309) is fixedly mounted on the bottom inner side of the fixed cylinder (301); the magnetic block (304) is fixedly mounted on the bottom inner side of the fixed cylinder (305); the magnetic block (306) is fixedly mounted on the bottom inner side of the fixed cylinder (307); the magnetic block (308) is fixedly mounted on the bottom inner side of the fixed cylinder (309); the magnetic block (307) is fixedly mounted on the bottom inner side of the fixed cylinder (308); the magnetic block (309) is fixedly mounted on the bottom inner side of the fixed cylinder (301 ... 06) Fixedly installed at the bottom of the sliding column (305); magnetic block (307) fixedly installed at the bottom of the baffle (306), and magnetic block (307) and electromagnet (304) repel each other; tension seat (308) fixedly installed at the top of the sliding column (305); tension roller (309) rotatably installed inside the tension seat (308), and the tension roller (309) and guide roller (302) convey the upper layer (6), the middle layer (7) and the lower layer (8).

4. The surface layer and interlayer paper partitioning processing equipment according to claim 1, characterized in that: The composite mechanism (4) includes: a composite frame (401), a lower composite roller (402), a cylinder B (403), a pressure seat (404), an upper composite roller (405), and a bevel gear B (406); the composite frame (401) is fixedly mounted on the other side of the top of the support platform (1); the lower composite roller (402) is rotatably mounted inside the composite frame (401); the cylinder B (403) is fixedly mounted on both sides of the top of the composite frame (401); the pressure seat (404) is connected to the upper composite roller (405) via a bevel gear B (406). The tail groove is slidably disposed inside both sides of the composite frame (401), and the pressure seat (404) is fixedly connected to the telescopic end of the cylinder B (403); the upper composite roller (405) is rotatably disposed inside the pressure seat (404), and the upper composite roller (405) and the lower composite roller (402) are pressed together with the upper layer (6), the middle layer (7) and the lower layer (8); the bevel gear B (406) is fixedly disposed at the ends of the lower composite roller (402) and the upper composite roller (405).

5. The surface layer and interlayer paper partitioning processing equipment according to claim 4, characterized in that: The transmission assembly (5) includes: a fixed seat (501), a transmission shaft (502), a transmission bar (503), and a transmission bevel gear A (504); the fixed seat (501) is fixedly disposed on the outside of the fixed frame (201) and the composite frame (401); the transmission shaft (502) is rotatably disposed inside the fixed seat (501), and the transmission shaft (502) is fixedly disposed on the shaft end of the motor device, and the motor device is fixedly disposed on the top of the fixed seat (501); the transmission bar (503) is fixedly disposed on both sides of the transmission shaft (502); the transmission bevel gear A (504) is fixedly disposed at the bottom end of the transmission shaft (502), and the transmission bevel gear A (504) meshes with the bevel gear A (206) at the top of the lower pressure roller (202) and the bevel gear B (406) at the top of the lower composite roller (402).

6. The surface layer and interlayer paper partitioning processing equipment according to claim 5, characterized in that: The transmission assembly (5) further includes: an auxiliary seat (505), a rotating cylinder (506), a transmission groove (507), and a transmission bevel gear B (508); the auxiliary seat (505) is fixedly disposed on the outside of the sliding seat (204) and the pressure seat (404); the rotating cylinder (506) is rotatably disposed inside the auxiliary seat (505), and the rotating cylinder (506) is movably disposed on the outside of the transmission shaft (502); the transmission groove (507) is opened inside the rotating cylinder (506), and a transmission bar (503) is slidably disposed inside the transmission groove (507); the transmission bevel gear B (508) is fixedly disposed on the top of the rotating cylinder (506), and the transmission bevel gear B (508) and the transmission bevel gear A (504) are symmetrically disposed, and the transmission bevel gear B (508) meshes with the bevel gear A (206) at the top of the upper pressure roller (205) and the bevel gear B (406) at the top of the upper composite roller (405).

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