Preparation method of composite filling decorative base paper and its machinery

Abstract

A kind of preparation method of composite filling decorative base paper and its machinery, it is related to paper production and processing technical field method includes the following steps, selecting required base paper and film and decorative strip;Base paper and film are transported respectively;The upper side of base paper and the lower side of film are respectively uniformly glued;Decorative strip is transversely laid on the upper side of glued base paper, and the upper side of decorative strip is separately glued;Carry out once compression;Second compression is carried out using heated compression cylinder;The edge of decorative base paper after transverse compression is cut;After heat curing treatment.Machinery includes secondary compression cylinder, handle, sliding block, triangular sliding slot, elastic slide bar assembly, slide handle, fixed frame, decorative strip glue roller, cutting knife, heat curing box and once compression roller etc.Improve its waterproof performance, strength and stereoscopic feeling, while ensuring the stability and durability of product, by the cooperation of mechanical structure, the preparation process of decorative base paper is more efficient and accurate.

Description

Technical Field

[0001] This invention relates to the field of paper production and processing technology, specifically to a method and machinery for preparing composite filled and decorated base paper. Background Technology

[0002] In today's packaging and decoration industry, the preparation methods and related machinery for composite-filled decorative base paper play a crucial role. They provide effective means for producing high-quality, diversified packaging materials, endowing products with unique appearance and functions. Traditional decorative paper typically achieves its decorative effect through processes such as coating, printing, or film coating on its surface to meet market demands. However, existing decorative base papers have some issues regarding water resistance, strength, and three-dimensionality.

[0003] First, existing decorative base papers have poor water resistance, which may damage products in humid environments. Second, their strength is relatively low, making them susceptible to damage from external physical forces. Furthermore, existing decorative base papers lack a strong three-dimensional effect, making it difficult to highlight the product's three-dimensional appearance and visual appeal.

[0004] To address these issues, some multi-layered base papers with internal decorative materials have emerged on the market. However, these products suffer from the problem of relatively simple multi-layered composite processes, leading to a tendency for cracking and loosening of the internal filler materials. Therefore, there is an urgent need for a new method for preparing decorative base papers and corresponding machinery that can overcome the shortcomings of existing decorative base papers, improve their waterproof performance, strength, and three-dimensionality, while ensuring product stability and durability. Summary of the Invention

[0005] The purpose of this invention is to provide a method and machinery for preparing composite filled decorative base paper, which can overcome the defects of existing decorative base paper, improve its waterproof performance, strength and three-dimensionality, and at the same time ensure the stability and durability of the product.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A method for preparing a composite decorative base paper, characterized by comprising the following steps:

[0008] (1) Select suitable base paper, film and decorative strips to ensure that the materials have good processability and structural stability;

[0009] (2) The base paper and the outer film are conveyed separately, with the base paper kept horizontal and located below the outer film during conveying;

[0010] (3) During conveying, apply glue evenly to the upper side of the base paper and the lower side of the film respectively;

[0011] (4) Lay the decorative strip horizontally on the top side of the glued base paper, and apply glue separately to the top side of the decorative strip;

[0012] (5) Press the conveyed base paper, the surface film, and the decorative strip between them once;

[0013] (6) The decorative base paper after the first pressing is pressed a second time using a heated pressing cylinder;

[0014] (7) Trim the edges of the decorative base paper after horizontal pressing;

[0015] (8) After heating and curing, the finished paper meets the requirements.

[0016] The processes in steps (8) and (7) can be interchanged.

[0017] A machine for preparing composite filled decorative base paper, characterized in that: it includes a base, a side plate is provided on the upper side of the base, a secondary pressing cylinder is rotatably arranged on the side plate, a drive motor connected to the secondary pressing cylinder is provided on the side of the side plate, a rotating handle is fixedly arranged at the outer end of the rotating shaft of the secondary pressing cylinder and located outside the side plate, a slider is rotatably arranged at the outer end of the rotating handle, a triangular groove is provided on the outer side of the side plate and above the rotating shaft, a step is provided at the corner of the triangular groove, an elastic sliding rod assembly is slidably arranged inside the triangular groove, a sliding handle is fixedly provided at the outer end of the elastic sliding rod assembly, a vertical sliding groove is provided on the sliding handle, and the slider slides... The sliding mechanism is located inside the slide groove. Fixed frames are fixed on both sides of the slide handle. A decorative strip gluing roller is positioned between the front ends of the fixed frames. A cutting blade is positioned at the rear end of the fixed frames. A cutting groove is positioned on the upper side of the base corresponding to the cutting blade. A heating and curing chamber is positioned on the upper side of the base, in front of or behind the cutting groove. A surface film conveying roller is positioned at the front end of the base. A surface film gluing box is positioned at the front end of the base, near the surface film conveying roller. A base paper roller is positioned on the upper side of the side plate. A base paper gluing box is positioned on the upper side of the side plate, below the base paper roller. A winding roller mechanism is positioned at the end of the base. A primary pressing roller is positioned on the side plate, behind the decorative strip gluing roller.

[0018] In a preferred embodiment, a heating device is provided inside the secondary pressing cylinder, and a rubber layer is provided on the outside of the secondary pressing cylinder.

[0019] In a preferred embodiment, the elastic slide rod assembly includes a slide rod, a sliding sleeve, and a compression spring. One end of the slide rod is slidably disposed within a triangular groove, and the other end of the slide rod is slidably disposed within the sliding sleeve. The compression spring is disposed on the end side of the slide rod and located inside the sliding sleeve. The sliding sleeve is fixedly disposed at the upper end of the slide handle.

[0020] In a preferred embodiment, the two ends of the primary pressing roller are rotatably mounted on the side plate via telescopic elastic elements. The telescopic elastic elements include a telescopic plate, a telescopic sleeve, and a spring. One end of the telescopic plate is rotatably connected to the primary pressing roller, and the other end of the telescopic plate is slidably mounted inside the telescopic sleeve. The spring is mounted on the end side of the telescopic plate and located inside the telescopic sleeve. The telescopic sleeve is fixedly mounted on the side plate.

[0021] In a preferred embodiment, a sponge layer is provided on the outer side of the adhesive roller on the decorative strip, and the bottom of the adhesive box on the base paper extends above the adhesive roller on the decorative strip.

[0022] In a preferred embodiment, a decorative strip feeding box is provided at the front end of the side plate. The upper end of the decorative strip feeding box is provided with a feeding port, and the lower end of the decorative strip feeding box is provided with a discharging port. The lower end of the decorative strip feeding box is located in front of the decorative strip roller. A baffle is fixedly provided on the front side of the discharging port, and a gap is left between the bottom of the baffle and the upper side of the base.

[0023] In a preferred embodiment, the cutting edge of the cutting blade is angled.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] This method, by adding decorative strips, improves the smoothness and three-dimensionality of the decorative base paper, enhancing the product's three-dimensional image and visual appeal, thus improving its appearance quality. Uniform gluing of the base paper and outer film, with separate gluing applied to the decorative strips, ensures strong adhesion between the strips and the base paper and film, thereby strengthening the base paper. The waterproof outer film provides excellent water resistance, reducing the risk of damage in humid environments. A two-stage pressing process, where the base paper is heated after the first pressing and then pressed a second time, ensures a tighter bond between the decorative strips and the base paper and film, enhancing the overall strength of the base paper and reducing susceptibility to external damage. The mechanical equipment is designed to handle the gluing, separating, and pressing steps of the decorative strips. Through the coordinated mechanical structure, efficient processing is achieved, making the preparation of the decorative base paper more efficient and precise. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the mechanical structure of Embodiment 1 of the present invention;

[0027] Figure 2 This is a partial structural schematic diagram of Embodiment 1 of the present invention;

[0028] Figure 3 This is a schematic diagram of the elastic slide bar assembly structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the telescopic elastic element structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the triangular groove structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the decorative strip feeding box structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the adhesive roller structure on the decorative strip of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the adhesive roller on the decorative strip of the present invention during horizontal movement;

[0034] Figure 9 This is a schematic diagram of the structure of the decorative strip when the rubber roller on the decorative strip moves horizontally and squeezes the decorative strip according to the present invention;

[0035] Figure 10 This is a schematic diagram of the structure of the decorative strip after the rubber roller moves upward at an angle.

[0036] Figure 11 Schematic diagram of the structure of the decorative strip after the glue roller moves downward at an incline.

[0037] Figure 12 This is a partial structural schematic diagram of Embodiment 2 of the present invention;

[0038] In the diagram: 1. Base; 2. Side plate; 3. Secondary pressing cylinder; 4. Drive motor; 5. Rotating shaft; 6. Rotating handle; 7. Slider; 8. Triangular slide groove; 9. Elastic slide rod assembly; 10. Slide handle; 11. Slide groove; 12. Fixing frame; 13. Decorative strip gluing roller; 14. Cutting knife; 15. Cutting groove; 16. Heating and curing box; 17. Surface film conveying roller; 18. Surface film gluing box; 19. Base paper roller; 20. Base paper gluing... 21. Box; 22. Rewinding roller mechanism; 23. Primary pressing roller; 24. Rubber layer; 25. Telescopic elastic element; 26. Decorative strip feeding box; 27. Base paper; 28. Surface film; 29. ​​Decorative strip; 20. Step; 21. Slide rod; 22. Slide sleeve; 23. Compression spring; 24. Sponge layer; 25. Telescopic plate; 26. Telescopic sleeve; 27. Spring; 28. Feed port; 29. ​​Discharge port; 20. Baffle. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0041] A method for preparing a composite filled decorative base paper includes the following steps:

[0042] (1) Select suitable base paper, film and decorative strips to ensure that the materials have good processability and structural stability;

[0043] (2) The base paper and the outer film are conveyed separately, with the base paper kept horizontal and located below the outer film during conveying;

[0044] (3) During conveying, apply glue evenly to the upper side of the base paper and the lower side of the film respectively;

[0045] (4) Lay the decorative strip horizontally on the top side of the glued base paper, and apply glue separately to the top side of the decorative strip;

[0046] (5) Press the conveyed base paper, the surface film, and the decorative strip between them once;

[0047] (6) The decorative base paper after the first pressing is pressed a second time using a heated pressing cylinder;

[0048] (7) Trim the edges of the decorative base paper after horizontal pressing;

[0049] (8) After heating and curing, the finished paper meets the requirements.

[0050] like Figure 1 , 2As shown in Figure 5, a preparation machine for composite filled decorative base paper includes a base 1, a side plate 2 on the upper side of the base 1, a secondary pressing cylinder 3 rotatably mounted on the side plate 2, a drive motor 4 connected to the secondary pressing cylinder 3 on the side of the side plate 2, a handle 6 fixedly mounted at the outer end of the rotating shaft 5 of the secondary pressing cylinder 3 and located outside the side plate 2, a slider 7 rotatably mounted at the outer end of the handle 6, a triangular groove 8 located on the outer side of the side plate 2 and above the rotating shaft 5, and a step 81 (e.g., at the corner of the triangular groove 8) at the corner of the groove. Figure 5 As shown), an elastic slide rod assembly 9 is slidably disposed inside the triangular slide groove 8. A slide handle 10 is fixedly disposed at the outer end of the elastic slide rod assembly 9. A vertical slide groove 11 is provided on the slide handle 10. The slider 7 is slidably disposed inside the slide groove 11. Fixing frames 12 are fixedly disposed on both sides of the slide handle 10. A decorative strip glue roller 13 is disposed between the front ends of the fixing frames 12. A cutting blade 14 is disposed at the rear end of the fixing frames 12. A cutting groove 15 is provided on the upper side of the base 1 corresponding to the position of the cutting blade 14. The upper side of the base 1 is located at the cutting groove 15. A heating and curing chamber 16 is located at the rear of the base 1. A surface film conveying roller 17 is located at the front end of the base 1, and a surface film gluing box 18 is located at the front end of the base 1 and at the position of the surface film conveying roller 17. A raw paper roller 19 is located on the upper side of the side plate 2, and a raw paper gluing box 20 is located on the upper side of the side plate 2 and below the raw paper roller 19. A winding roller mechanism 21 is located at the end of the base 1, and the winding roller mechanism 21 has a motor (not shown) that drives the winding roller to rotate. A primary pressing roller 22 is located on the side plate 2 and behind the decorative strip gluing roller 13. A heating device is installed inside the secondary pressing cylinder 3, and a rubber layer 23 is installed on the outer side of the secondary pressing cylinder 3. The cutting blade 14 is inclined, and the inclined blade can cut the paper better.

[0051] like Figure 1 and 3 As shown, the elastic slide rod assembly 9 includes a slide rod 91, a slide sleeve 92, and a compression spring 93. One end of the slide rod 91 is slidably disposed in the triangular slide groove 8, and the other end of the slide rod 91 is slidably disposed in the slide sleeve 92. The compression spring 93 is disposed on the end side of the slide rod 91 and located inside the slide sleeve 92. The slide sleeve 92 is fixedly disposed on the upper end of the slide handle 10.

[0052] like Figure 1 and 4 As shown, the two ends of the primary pressing roller 22 are rotatably mounted on the side plate 2 via a telescopic elastic element 24. The telescopic elastic element 24 includes a telescopic plate 241, a telescopic sleeve 242, and a spring 243. One end of the telescopic plate 241 is rotatably connected to the primary pressing roller 22, and the other end of the telescopic plate 241 is slidably mounted inside the telescopic sleeve 242. The spring 243 is mounted on the end side of the telescopic plate 241 and located inside the telescopic sleeve 242. The telescopic sleeve 242 is fixedly mounted on the side plate 2.

[0053] like Figure 7 As shown, a sponge layer 131 is provided on the outer side of the glue roller 13 on the decorative strip, and the bottom of the glue box 20 on the base paper extends above the glue roller 13 on the decorative strip.

[0054] like Figure 6 As shown, a decorative strip feeding box 25 is provided at the front end of the side plate 2. The upper end of the decorative strip feeding box 25 is provided with a feeding port 251, and the lower end of the decorative strip feeding box 25 is provided with a discharging port 252. The lower end of the decorative strip feeding box 25 is located in front of the decorative strip glue roller 13. A baffle 253 is fixedly provided on the front side of the discharging port 252. A gap is left between the bottom of the baffle 253 and the upper side of the base 1 to ensure that the raw paper 26 passes through smoothly.

[0055] like Figure 1-12 As shown, the working process of this embodiment is as follows:

[0056] like Figure 1 and 8 First, the prepared base paper and surface film are respectively placed on the base paper roller 19 and the surface film conveying roller 17. The base paper roller 19 is glued inside the base paper gluing box, and the surface film conveying roller 17 is glued under the surface film gluing box 18. The base paper and surface film pass through the primary pressing roller 22, the secondary pressing cylinder 3, and the heat curing box 16 in sequence, and are then pulled and wound by the winding roller mechanism 21. The winding roller mechanism 21 and the drive motor 4 of the secondary pressing cylinder 3 are started. The winding roller mechanism 21 will continuously pull the base paper and surface film forward. The drive motor 4 will drive the rotating handle 6 to rotate through the rotating shaft 5. Thus, with the cooperation of the slider 7, the slide groove 11, and the slider 10, and with the cooperation of the elastic slider assembly 9 and the triangular slide groove 8, the elastic slider assembly 9 will move in a triangular trajectory in the triangular slide groove 8, thereby driving the slider 10, the fixing frame 12, and the decorative strip gluing roller 13 to also move in a triangular trajectory. Figure 8 As shown, the glue roller 13 on the decorative strip moves horizontally to the right. The glue roller 13 on the decorative strip squeezes the decorative strip 28 forward. Since the decorative strip 28 has a certain thickness and an irregular cross-section, such as the upper side of the cross-section of the decorative strip 28 in this embodiment being arc-shaped, when the decorative strip 28 contacts the primary pressing roller 22 on the rear side, since the thermosetting adhesive used has not yet bonded, the decorative strip 28 may be in a slipping state if it is not squeezed forward by the glue roller 13 on the decorative strip 28 under the traction of the base paper 26. This would result in the decorative strip 28 being unable to pass through the bottom of the primary pressing roller 22 to complete the first pressing, or causing the position of the decorative strip 28 to deviate, tilt, or become irregular.

[0057] like Figure 9As shown, the glue roller 13 on the decorative strip has already brought the rear decorative strip 28 below the primary pressing roller 22. Under the traction of the base paper 26, the rear decorative strip 28 will smoothly pass under the primary pressing roller 22 and complete the first pressing. When the decorative strip 28 is below the primary pressing roller 22, the primary pressing roller 22 rises, and the spring 243 is in a compressed state. Then, the glue roller 13 on the decorative strip will move to the left along a triangular trajectory to apply glue to the surface of the rear decorative strip 28, which has a certain thickness. It is worth noting that the upper surface of the decorative strip 28 may have some decorative patterns and a certain thickness. If only the glue on the inner surface of the surface film 27 is used, it may cause the surface film 27 to stick to the decorative strip 28. If the joint is not firm, problems such as empty packages can easily occur. In particular, gaps will be produced at the joints between the two sides of the decorative strip 28 and the base paper 26 and the surface film 27. Since the primary pressing roller has a certain diameter, it is difficult to fully press these gaps. However, when the glue roller 13 of the decorative strip moves in a triangular trajectory, it has a certain squeezing effect on both sides of the decorative strip 28. Since the glue roller 13 of the decorative strip has a sponge layer 131 on its outer side, the sponge layer 131 can fully apply glue to both sides of the decorative strip 28. Thus, the gaps produced at the joints between the two sides of the decorative strip 28 and the base paper 26 and the surface film 27 will be fully filled by the glue. Therefore, no gaps or empty packages will occur after the primary pressing.

[0058] like Figure 10 As shown, the decorative strip glue roller 13 moves along a triangular trajectory to the top, and the decorative strip glue roller 13 will fully contact the bottom of the surface film glue box 18. The surface film glue box 18 can not only apply glue to the surface film 27, but also replenish glue to the decorative strip glue roller 13. When the decorative strip glue roller 13 is at the top, the lower side of the decorative strip glue roller 13 can still contact the upper surface of the decorative strip 28, so as to continuously apply glue to the upper surface of the decorative strip 28.

[0059] like Figure 11 As shown, after the decorative strip gluing roller 13 moves downward at an angle, it separates the two decorative strips 28 located side by side on the front side, thereby controlling the feeding and the spacing between the decorative strips 28. During the downward movement of the decorative strip gluing roller 13, it can still apply glue to the left side of the decorative strip 28 located on the rear side. The next step is to return to the previous step. Figure 10The decorative base paper, after the first pressing, enters the lower part of the second pressing cylinder 3 for a second pressing. The diameter of the second pressing cylinder 3 is much larger than that of the first pressing roller 22. Since the surface of the second pressing cylinder 3 is provided with a rubber layer 23, which is made of a highly elastic material, the rubber layer 23 can fully compress the decorative base paper after the first pressing to complete the second pressing. Since the interior of the second pressing cylinder 3 has a heating device, it can perform basic shaping of the decorative base paper, which is beneficial for subsequent cutting, traction and heat curing. The decorative base paper after the second pressing is then cut, and after heat curing, it forms a finished product for winding.

[0060] Example 2

[0061] like Figure 12 As shown, the preceding and following processes of steps (7) and (8) in Example 1 have been interchanged, and the cutting blade 14 in the machine extends to the rear of the heating and curing box through the fixing frame 12, thereby realizing the process of heating and curing the pressed decorative paper before trimming the edges. This makes the trimmed edges more flush and the effect better. Other methods, steps and mechanical structures are consistent with the methods, steps and mechanical structures of Example 1.

[0062] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machine for preparing composite filled decorative base paper, characterized in that: The system includes a base (1), a side plate (2) on the upper side of the base (1), a secondary pressing cylinder (3) rotatably mounted on the side plate (2), a drive motor (4) connected to the secondary pressing cylinder (3) on the side of the side plate (2), a handle (6) fixedly mounted on the outer end of the rotating shaft (5) of the secondary pressing cylinder (3) and located outside the side plate (2), a slider (7) rotatably mounted on the outer end of the handle (6), a triangular groove (8) is provided on the outer side of the side plate (2) and above the rotating shaft (5), a step (81) is provided at the corner of the triangular groove (8), an elastic slide rod assembly (9) is slidably mounted inside the triangular groove (8), a slide handle (10) is fixedly mounted on the outer end of the elastic slide rod assembly (9), a vertical groove (11) is provided on the slide handle (10), the slider (7) is slidably mounted inside the groove (11), and a fixing frame (12) is fixedly mounted on both sides of the slide handle (10). A decorative strip adhesive roller (13) is provided between the front ends of the fixing frame (12), and a cutting blade (14) is provided at the rear end of the fixing frame (12). A cutting groove (15) is provided on the upper side of the base (1) corresponding to the position of the cutting blade (14). A heating curing box (16) is provided on the upper side of the base (1) in front of or behind the cutting groove (15). A film conveying roller (17) is provided at the front end of the base (1), and a decorative strip adhesive roller (13) is provided at the front end of the base (1) and at the position of the film conveying roller (17). The top film gluing box (18) is provided on the upper side of the side plate (2), the top paper roller (19) is provided on the upper side of the side plate (2) and below the top paper roller (19), the bottom of the base (1) is provided with a winding roller mechanism (21), the top of the side plate (2) and behind the decorative strip gluing roller (13) is provided with a primary pressing roller (22), and the two ends of the primary pressing roller (22) are rotatably mounted on the side plate (2) through a telescopic elastic element (24).

2. The preparation machinery for composite-filled decorative base paper according to claim 1, characterized in that: The secondary pressing cylinder (3) is equipped with a heating device inside, and a rubber layer (23) is provided on the outside of the secondary pressing cylinder (3).

3. The preparation machinery for composite-filled decorative base paper according to claim 1, characterized in that: The elastic slide rod assembly (9) includes a slide rod (91), a sliding sleeve (92) and a compression spring (93). One end of the slide rod (91) is slidably disposed in the triangular slide groove (8), and the other end of the slide rod (91) is slidably disposed in the sliding sleeve (92). The compression spring (93) is disposed on the end side of the slide rod (91) and located inside the sliding sleeve (92). The sliding sleeve (92) is fixedly disposed at the upper end of the slide handle (10).

4. The preparation machinery for composite-filled decorative base paper according to claim 1, characterized in that: The telescopic elastic element (24) includes a telescopic plate (241), a telescopic sleeve (242), and a spring (243). One end of the telescopic plate (241) is rotatably connected to the primary pressing roller (22), and the other end of the telescopic plate (241) is slidably disposed inside the telescopic sleeve (242). The spring (243) is disposed on the end side of the telescopic plate (241) and located inside the telescopic sleeve (242). The telescopic sleeve (242) is fixedly disposed on the side plate (2).

5. The preparation machinery for composite-filled decorative base paper according to claim 1, characterized in that: The outer side of the decorative strip glue roller (13) is provided with a sponge layer (131), and the bottom of the base paper glue box (20) extends above the decorative strip glue roller (13).

6. The preparation machinery for composite-filled decorative base paper according to claim 5, characterized in that: The front end of the side plate (2) is provided with a decorative strip feeding box (25). The upper end of the decorative strip feeding box (25) is provided with a feeding port (251), and the lower end of the decorative strip feeding box (25) is provided with a discharging port (252). The lower end of the decorative strip feeding box (25) is located in front of the decorative strip glue roller (13). A baffle (253) is fixedly provided on the front side of the discharging port (252). A gap is left between the bottom of the baffle (253) and the upper side of the base (1).

7. The preparation machinery for composite-filled decorative base paper according to claim 1, characterized in that: The cutting blade (14) is inclined at the blade edge.

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