A cutting device for cutting selvedges of a rapier loom

Abstract

The application relates to the cloth cutting field, in particular to a rapiers loom cloth selvage cutting device, which comprises a cutting assembly and a limiting assembly, the cutting assembly is located between the cloth guide wheel and the periphery wheel and close to one side of the cloth, the cutting assembly comprises a cutter holder and a cutting blade embedded in the cutter holder; the limiting assembly is located on the side of the cloth away from the cutting assembly and faces the cutting assembly, the limiting assembly comprises a limiting shell, the limiting shell is provided with a limiting surface in contact with the cloth. The cutting assembly is arranged at the cloth relaxation position, the limiting assembly supports the cloth, the stability and smoothness of the cutting operation are guaranteed, the problems such as burrs and wrinkles during the cloth cutting are effectively avoided, and the cloth cutting quality is improved.

Description

Technical Field

[0001] This application relates to the field of fabric cutting, and in particular to a selvage cutting device for a rapier loom. Background Technology

[0002] Rapier looms, as key equipment in the textile industry, play a vital role in fabric production. With the continuous development of the textile industry, the requirements for fabric quality and production efficiency are increasing. Among these, the quality of selvage cutting directly affects the final quality of the fabric and subsequent processing. High-quality selvage cutting results in a neater fabric appearance, reduces subsequent processing steps, and enhances the product's market competitiveness.

[0003] In traditional rapier looms, the cutting device is often located between the feed roller and the fabric outlet. The outlet and the feed roller together apply tension to the fabric, keeping it taut. When the fabric is cut while taut, the large strain energy accumulated in the fabric is released the instant the fibers are cut, causing the fibers around the cut to be impacted and scattered, thus forming rough edges. This results in uneven edges on both sides of the woven fabric. Utility Model Content

[0004] The purpose of this application is to overcome the above-mentioned technical problems and provide a selvage cutting device for a rapier loom.

[0005] A selvage cutting device for a rapier loom, the rapier loom including a guide roller and a rotating roller arranged in parallel, the rapier loom having a discharge port, the guide roller guiding the fabric from the discharge port to the rotating roller, the discharge port and the guide roller being located on the same horizontal plane, the rotating roller being located below the discharge port and the guide roller, comprising: A cutting assembly, located between the feed roller and the rotary roller and situated on one side of the fabric, includes a blade holder and a cutting blade embedded within the blade holder. A limiting component is located on the side of the fabric away from the cutting component and facing the cutting component. The limiting component includes a limiting housing, and the surface of the limiting housing that abuts against the fabric is the limiting surface.

[0006] By adopting the above solution, as the guide wheel of the rapier loom draws the fabric out of the outlet, it applies tension to the fabric, which is in a taut state. The taut fabric accumulates a large amount of strain energy. If the fabric is cut by the cutting blade while in a taut state, this energy will be released instantly, causing the fibers around the cut to be impacted and scattered, thus forming burrs. Since the fabric is relatively loose between the guide wheel and the rotating wheel, by placing the cutting blade between the guide wheel and the rotating wheel, the cutting blade can effectively avoid the formation of burrs when cutting the loose fabric. When the cutting blade touches the fabric, it will cause the fabric to deform slightly in the direction of the cutting blade's force, making it difficult for the cutting blade to apply force. The limiting face of the limiting housing supports the fabric, making it easier for the cutting blade to apply force.

[0007] In one embodiment, the tool holder includes a mounting slot, the cutting blade is embedded in the mounting slot, and the tool holder also has fixing slots on both sides. The depth of the mounting slot is greater than the length of the fixing slot. The tool holder also has a mounting bolt on one side that passes through both the fixing slot and the cutting blade. The mounting bolt is fixed at any position along the length of the fixing slot.

[0008] By adopting the above solution, the length of the cutting blade protruding from the blade holder can be changed through the cooperation of the mounting bolts and the fixing slots, thereby adjusting the distance between the cutting blade and the fabric and ensuring that the cutting blade has sufficient force to cut the fabric.

[0009] In one embodiment, the upper part of the knife holder is also provided with a limiting seat, and the limiting seat is provided with limiting rollers on both sides. The extending direction of the limiting rollers is parallel to the fabric guiding wheel, and the fabric is clamped between the limiting rollers and the limiting housing.

[0010] By adopting the above solution, during the process of the cutter cutting the fabric, a force opposite to the direction of fabric movement will be applied to the fabric, which will cause wrinkles to form on the contact surface between the fabric and the limiting housing. When the fabric passes through the limiting roller, the limiting roller will press the fabric firmly to prevent wrinkles from forming.

[0011] In one embodiment, the limiting seat has a wetting wheel in the middle, and the outer peripheral surface of the wetting wheel contacts the cut part of the fabric.

[0012] By adopting the above scheme, the wetting wheel wets the cut edge of the fabric during the movement process. The cut edge of the fabric is wetted by the wetting wheel, which increases the toughness and softness of the fabric and reduces its brittleness. When the fibers are wetted, the fabric is not easy to break or split when subjected to shear force. At the same time, the cut fibers of the fabric will not curl up or spread out, which can effectively reduce the generation of rough edges.

[0013] In one embodiment, the wetting wheel is provided with wetting shells for storing wetting liquid on both sides, and the side of the wetting shell facing the wetting wheel is provided with a liquid outlet.

[0014] By adopting the above scheme, during the rotation of the wetting wheel, the wetting liquid inside the wetting shell seeps out from the liquid outlet hole, thereby wetting the wetting wheel and ensuring that the wetting wheel can be continuously wetted.

[0015] In one embodiment, the limiting surface has a relief groove extending along the direction of fabric movement in the middle.

[0016] By adopting the above solution, the cutting blade will pass through the fabric during the cutting process, while the fabric and the limiting surface remain in contact. The clearance groove avoids the cutting blade, preventing interference between the cutting blade and the limiting surface.

[0017] In one embodiment, the limiting surface has multiple adsorption holes arranged in an array, and the side of the limiting housing facing away from the limiting surface is connected to a negative pressure source.

[0018] By adopting the above scheme, the negative pressure source extracts the gas inside the limiting shell, and the adsorption hole located on the limiting surface generates negative pressure, thereby adsorbing the fabric onto the limiting surface and further limiting the fabric. The fabric wrinkles during the cutting process.

[0019] In one embodiment, the clearance groove is V-shaped, and multiple dust suction holes are arranged in an array on both sides of the clearance groove.

[0020] By adopting the above solution, fine fiber debris and lint will be generated during the fabric cutting process. These debris will adhere to the surface of the fabric and the cut area, affecting the flatness of the fabric during cutting and polluting the working environment. By setting a dust suction hole on the side of the relief groove, the negative pressure source will generate negative pressure in the dust suction hole when the fabric is cut, and the dust suction hole will suck in the lint and debris generated when the fabric is cut.

[0021] In one embodiment, the limiting housing is provided with a detachable dust collection box, the dust collection box is provided with a through hole communicating with the dust suction hole, and the side wall surface of the dust collection box is mesh-like.

[0022] By adopting the above solution, the lint and debris sucked in by the suction hole are collected in the dust collection box, which facilitates the cleaning of the inside of the limiting shell. The side wall of the dust collection box is set as a mesh, so that the dust collection box can accommodate lint and debris without affecting the airflow.

[0023] In one embodiment, the bottom of the tool holder is further provided with a support base, the support base including a base plate and a support rod, the upper surface of the base plate is provided with a support sleeve, the side wall of the support sleeve is provided with a limiting screw hole and a tightening member that is connected to the limiting screw hole, and the support rod is sleeved in the support sleeve.

[0024] By adopting the above solution, the height of the cutting component is adjustable, which further improves the flexibility of the cutting blade position adjustment and ensures that the cutting blade can cut stably.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. During the process of the guide wheel of the rapier loom drawing the fabric out of the outlet, the guide wheel applies tension to the fabric, which is in a taut state. The taut fabric accumulates a large amount of strain energy. If the fabric is cut by the cutting blade in this taut state, the fabric fibers are cut, and this energy is released instantly, causing the fibers around the cut to be impacted and scattered, thus forming a burr. Since the fabric is relatively loose between the guide wheel and the rotating wheel, by placing the cutting blade between the guide wheel and the rotating wheel, the cutting blade can effectively avoid the formation of burrs when cutting the loose fabric. When the cutting blade touches the fabric, it will cause the fabric to deform slightly in the direction of the cutting blade's force, making it difficult for the cutting blade to apply force. The limiting face of the limiting housing supports the fabric, making it easier for the cutting blade to apply force.

[0026] 2. With the setting of the limiting seat, when the fabric passes through the limiting roller, the limiting roller on both sides of the limiting seat will press the fabric firmly to prevent wrinkles from forming. During the movement of the fabric, the wetting wheel wets the cutting edge of the fabric. The cutting edge of the fabric is wetted by the wetting wheel. The toughness and softness of the fabric will increase after wetting, while the brittleness will decrease. When the fibers are wetted, the fabric is not easy to break or split when subjected to shear force. At the same time, the cut fibers of the fabric will not curl up or spread out, which can effectively reduce the generation of rough edges.

[0027] 3. By setting up adsorption holes and dust suction holes, the negative pressure source draws gas from the limiting housing. The adsorption holes located on the limiting surface generate negative pressure, thereby adsorbing the fabric onto the limiting surface and further limiting the fabric. The fabric wrinkles during the cutting process. At the same time, since the avoidance groove is V-shaped, the dust suction hole on the side wall of the avoidance groove can face the cutting point between the cutting tool and the fabric. When the fabric is cut, the negative pressure source reduces the air pressure in the dust suction hole, and the dust suction hole sucks in the lint and debris generated when the fabric is cut. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the selvage cutting device for a rapier loom provided in this application.

[0029] Figure 2This is a schematic diagram showing the positional relationship between the cutting component and the limiting component.

[0030] Figure 3 This is a schematic diagram of the cutting component structure.

[0031] Figure 4 It is a cross-sectional view of the wetting wheel and the wetting shell.

[0032] Figure 5 This is a schematic diagram of the limit component.

[0033] Figure 6 This is a cross-sectional view of the dust collection box and the limiting housing.

[0034] Explanation of reference numerals in the attached drawings: 1. Cutting assembly; 11. Blade holder; 111. Mounting slot; 112. Fixing slot; 113. Mounting bolt; 12. Cutting blade; 13. Limiting seat; 131. Limiting roller; 132. Wetting wheel; 133. Wetting shell; 1331. Liquid outlet; 14. Support seat; 141. Base plate; 142. Support rod; 143. Support sleeve; 1431. Limiting screw hole; 1432. Tightening component; 2. Limiting assembly; 21. Limiting shell; 211. Limiting surface; 2111. Adsorption hole; 212. Alternating groove; 2121. Dust suction hole; 213. Dust collection box; 2131. Through hole; 22. Negative pressure source; 3. Cloth guide wheel; 4. Rotary wheel; 5. Discharge port; 6. Cloth. Detailed Implementation

[0035] Therefore, it is necessary to provide a selvage cutting device for rapier looms that can avoid producing burrs during the fabric cutting process.

[0036] Please see Figure 1 , Figure 1 This is a schematic diagram of the selvage cutting device for a rapier loom provided in this application. The selvage cutting device for a rapier loom provided in this application includes a cutting component 1 and a limiting component 2. The cutting component 1 includes a blade holder 11 and a cutting blade 12. The limiting component 2 includes a limiting housing 21. The cutting component 1 is located between the feed roller 3 and the rotating roller 4 and is located on one side of the fabric 6. The limiting component 2 is located on the side of the fabric 6 away from the cutting component 1 and directly opposite the cutting component 1. The limiting component 2 can support the fabric 6 and facilitate the application of force by the cutting component 1. Since the fabric 6 is in a taut state when the feed roller 3 of the rapier loom draws the fabric 6 out from the outlet 5, cutting at this time is prone to producing burrs. However, the fabric 6 between the feed roller 3 and the rotating roller 4 is relatively loose. Setting the cutting component 1 in this position can reduce the generation of burrs.

[0037] Please refer to the following: Figure 2-3 , Figure 3This is a schematic diagram of the cutting assembly structure. The blade holder 11 serves to support and fix the cutting blade 12, which is used to cut the fabric 6. The blade holder 11 has a mounting slot 111 for embedding the cutting blade 12. The mounting slot 111 is characterized by its depth being greater than the length of the fixing slots 112 on both sides of the blade holder 11. The fixing slots 112 are used to install mounting bolts 113. One side of the blade holder 11 has a mounting bolt 113 that passes through both the fixing slot 112 and the cutting blade 12. The mounting bolt 113 is fixed at any position along the length of the fixing slot 112. The mounting slot 111 can be a rectangular groove that can tightly embed the cutting blade 12 to prevent the blade from wobbling. The cutting blade 12 is generally made of a sharp metal material, such as stainless steel, and its blade edge undergoes special grinding treatment to cut the fabric 6 more easily and ensure its cutting performance.

[0038] The mounting bolt 113 can be a standard hex bolt or an internal hex bolt, or other types, as long as it functions to fix the cutting blade 12 to the blade holder 11. By engaging the mounting bolt 113 with the fixing slot 112, the length of the cutting blade 12 protruding from the blade holder 11 can be adjusted. For example, to cut thicker fabric 6 or adjust the cutting depth, the position of the mounting bolt 113 in the fixing slot 112 can be adjusted, thereby changing the length of the cutting blade 12 protruding and ensuring that the cutting blade 12 has sufficient force to cut the fabric 6.

[0039] The upper part of the cutter holder 11 is also provided with a limiting seat 13, which assists in limiting the fabric 6. The limiting seat 13 has limiting rollers 131 at both ends, extending parallel to the fabric guide wheel 3. The fabric 6 is clamped between the limiting rollers 131 and the limiting housing 21. The limiting rollers 131 are generally cylindrical, and their outer circumference can be smooth or have anti-slip textures. The anti-slip textures can be annular or spiral, etc., to increase the friction between them and the fabric 6, thus better clamping the fabric 6. The limiting rollers 131 are usually made of rubber or plastic with moderate hardness, ensuring both sufficient elasticity to clamp the fabric 6 and good wear resistance.

[0040] The limiting seat 13 and the cutter holder 11 can be integrally formed or fixed together by welding, bolting, or other methods. The limiting roller 131 and the limiting seat 13 can be connected by bearings, allowing the limiting roller 131 to rotate flexibly. When the fabric 6 moves, the limiting roller 131 rotates accordingly, reducing friction on the fabric 6. Thus, during the cutting process of the fabric 6, the limiting roller 131 can compact the fabric 6, preventing wrinkles from forming.

[0041] Please refer to the following: Figure 4 , Figure 4This is a cross-sectional view of the wetting wheel and the wetting shell. In this application, a wetting wheel 132 is provided in the middle of the limiting seat 13, and the outer peripheral surface of the wetting wheel 132 contacts the cut part of the fabric 6. Wetting shells 133 for storing wetting liquid are provided on both sides of the wetting wheel 132, and the surface of the wetting shell 133 facing the wetting wheel 132 has an outlet hole 1331. The wetting wheel 132 can be made of a material with good water absorption, such as a sponge, which can absorb and retain the wetting liquid. The wetting wheel 132 can also be made of a solid material, with a flexible absorbent layer covering its outer peripheral surface. The flexible absorbent layer can be made of materials such as sponge or cotton cloth, which have good water absorption and retention properties, effectively absorbing and storing the wetting liquid and transferring it to the fabric 6. The wetting shell 133 permeates the wetting liquid into the flexible absorbent layer through the outlet hole 1331. The wetting liquid can be water or an aqueous solution containing a small amount of fabric softener, which helps to increase the toughness and softness of the fabric 6.

[0042] The wetting shell 133 can be a sealed container made of plastic, and the liquid outlet 1331 can be a small circular hole. Its size and number can be adjusted as needed to ensure that an appropriate amount of wetting liquid can seep out onto the wetting wheel 132. When the fabric 6 moves past the wetting wheel 132, the wetting wheel 132 applies the wetting liquid to the cut area of ​​the fabric 6. The wetting of the fabric 6 increases its toughness and softness, while reducing its brittleness. When the fibers are wetted, the fabric 6 is less likely to break or split when subjected to shear force. At the same time, the cut fibers of the fabric 6 will not curl up or spread out, which can effectively reduce the generation of rough edges.

[0043] The bottom of the cutter holder 11 is also provided with a support base 14, which includes a base plate 141, a support rod 142, and a support sleeve 143. The base plate 141 serves to stabilize the entire cutting assembly 1. It is generally a square plate made of metal, which has good stability and load-bearing capacity. The upper surface of the base plate 141 is provided with a support sleeve 143. The side wall of the support sleeve 143 is provided with a limiting screw hole 1431 and a tightening part 1432 that matches the limiting screw hole 1431. The support rod 142 is sleeved inside the support sleeve 143. The support rod 142 is generally a cylindrical metal rod whose outer diameter matches the inner diameter of the support sleeve 143, allowing it to slide up and down inside the support sleeve 143. The tightening element 1432 can be a common nut. When the height of the cutting assembly 1 needs to be adjusted, loosen the tightening element 1432, adjust the position of the support rod 142 inside the support sleeve 143, and then tighten the tightening element 1432 to fix the support rod 142 in the appropriate position. This makes the height of the cutting assembly 1 adjustable, further improving the flexibility of the position adjustment of the cutting blade 12 and ensuring that the cutting blade 12 can cut stably.

[0044] Please refer to the following: Figure 5 , Figure 5This is a schematic diagram of the limiting component. The limiting housing 21 includes a limiting surface 211 that abuts against the fabric 6. A clearance groove 212 extending along the movement direction of the fabric 6 is provided in the middle of the limiting surface 211, and the clearance groove 212 matches the cutting path of the cutting blade 12. The function of the clearance groove 212 is to prevent interference between the cutting blade 12 and the limiting surface 211 during the cutting process of the fabric 6. Multiple adsorption holes 2111 are arrayed on the surface of the limiting surface 211. The side of the limiting housing 21 facing away from the limiting surface 211 is connected to a negative pressure source 22 via a pipe. The negative pressure source 22 can be a vacuum pump or similar device. When the negative pressure source 22 is working, the air pressure inside the adsorption holes 2111 decreases, thereby adsorbing the fabric 6 onto the limiting surface 211, further limiting the fabric 6 and preventing wrinkles from forming during the cutting process.

[0045] In this application, the clearance groove 212 is V-shaped, which can better adapt to the cutting action of the cutting blade 12. Multiple dust suction holes 2121 are arranged in an array on both sides of the clearance groove 212. The dust suction holes 2121 are used to suck up the lint and debris generated when the fabric 6 is cut. The V-shaped design of the clearance groove 212 allows the dust suction holes 2121 to face the cutting point between the cutting blade 12 and the fabric 6, so that the suction force generated by the dust suction holes 2121 can act on the cutting point between the cutting blade 12 and the fabric 6 to a greater extent.

[0046] Please refer to the following: Figure 6 , Figure 6 This is a cross-sectional view of the dust collection box and the limiting housing. The limiting housing 21 houses a detachable dust collection box 213, which has a through hole 2131 communicating with the suction hole 2121. The side wall of the dust collection box 213 is mesh-like. When the negative pressure source 22 creates negative pressure in the suction hole 2121, lint and debris enter the dust collection box 213 through the suction hole 2121 and the through hole 2131. The mesh-like side wall of the dust collection box 213 allows it to hold lint and debris without obstructing airflow. An insertion hole can be provided on the upper surface of the limiting housing 21, into which the dust collection box 213 is inserted, enabling a detachable connection between the dust collection box 213 and the limiting housing 21. This facilitates cleaning of accumulated lint and debris within the limiting housing 21, maintaining its cleanliness.

[0047] The working principle of this application is as follows: The selvage cutting device of the rapier loom, through a reasonable structural design, places the cutting component 1 between the feed roller 3 and the rotating roller 4. Utilizing the relatively loose nature of the fabric 6 at this location, it avoids the problem of burrs caused when cutting under taut conditions. The limiting housing 21 of the limiting component 2, through structures such as the limiting surface 211, suction hole 2111, avoidance groove 212, dust suction hole 2121, and dust collection box 213, effectively supports and limits the fabric 6 while also cleaning debris, ensuring cutting quality and a clean working environment. The cooperation between the mounting bolts 113 and the fixing slot 112 on the blade holder 11, and the adjustment of the height of the cutting component 1 by the support base 14, allows the position of the cutting blade 12 to be flexibly adjusted to adapt to different cutting needs of the fabric 6. The setting of the limit seat 13, the limit roller 131 and the wetting wheel 132 further optimizes the cutting process and avoids the generation of wrinkles and rough edges on the fabric 6. Compared with the traditional selvage cutting method of rapier loom, it greatly improves the quality of fabric 6 edge cutting.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A selvage cutting device for a rapier loom, the rapier loom comprising a guide roller (3) and a rotating roller (4) arranged in parallel, the rapier loom having a discharge port (5), the guide roller (3) guiding fabric (6) from the discharge port (5) to the rotating roller (4), the discharge port (5) and the guide roller (3) being located on the same horizontal plane, the rotating roller (4) being located below the discharge port (5) and the guide roller (3), characterized in that, include: A cutting assembly (1) is located between the fabric guide wheel (3) and the rotating wheel (4), and the cutting assembly (1) is located on one side of the fabric (6). The cutting assembly (1) includes a blade holder (11) and a cutting blade (12) embedded in the blade holder (11). The limiting component (2) is located on the side of the fabric (6) away from the cutting component (1) and facing the cutting component (1). The limiting component (2) includes a limiting housing (21), and the surface of the limiting housing (21) that abuts against the fabric (6) is the limiting surface (211).

2. A guillotine trimming device according to claim 1, characterized in that: The blade holder (11) includes a mounting slot (111), the cutting blade (12) is embedded in the mounting slot (111), and the blade holder (11) is also provided with fixing slots (112) on both sides. The depth of the mounting slot (111) is greater than the length of the fixing slot (112). The blade holder (11) is also provided with a mounting bolt (113) on one side, which passes through the fixing slot (112) and the cutting blade (12) at the same time. The mounting bolt (113) is fixed at any position in the length direction of the fixing slot (112).

3. A sley trimming device according to claim 2, characterised in that: The upper part of the knife holder (11) is also provided with a limiting seat (13), and the limiting seat (13) is provided with limiting rollers (131) on both sides. The extending direction of the limiting rollers (131) is parallel to the fabric guide wheel (3), and the fabric (6) is sandwiched between the limiting rollers (131) and the limiting housing (21).

4. A guillotine trimming device according to claim 3, characterized in that: The limiting seat (13) is provided with a wetting wheel in the middle, and the outer circumferential surface of the wetting wheel contacts the cut part of the fabric (6).

5. A sley trimming device according to claim 4, characterized in that: The wetting wheel has a wetting shell (133) for storing wetting liquid on both sides, and the wetting shell (133) has a liquid outlet hole (1331) on the side facing the wetting wheel (132).

6. A rapiers loom selvedge trimming device according to claim 1, characterized in that: The limiting surface (211) is provided with a clearance groove (212) extending along the movement direction of the fabric (6) in the middle.

7. A sley trimming device according to claim 6, characterized in that: The limiting surface (211) has multiple adsorption holes (2111) arranged in an array on its surface, and the surface of the limiting shell (21) facing away from the limiting surface (211) is connected to a negative pressure source (22).

8. A sley trimming device according to claim 7, characterized in that: The clearance groove (212) is V-shaped, and multiple dust suction holes (2121) are arranged in an array on both sides of the clearance groove (212).

9. A sley trimming device according to claim 8, characterized in that: The limiting housing (21) is provided with a detachable dust collection box (213), the dust collection box (213) is provided with a through hole (2131) communicating with the dust suction hole (2121), and the side wall of the dust collection box (213) is mesh.

10. A rapiers loom selvedge trimming device according to claim 1, characterized in that: The bottom of the tool holder (11) is also provided with a support base (14). The support base (14) includes a base plate (141) and a support rod (142). The upper surface of the base plate (141) is provided with a support sleeve (143). The side wall of the support sleeve (143) is provided with a limiting screw hole (1431) and a tightening member (1432) that is connected to the limiting screw hole (1431). The support rod (142) is sleeved in the support sleeve (143).

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