Edge cutting structure of loom

Abstract

The utility model provides an edge cutting structure of a loom. The edge cutting structure comprises a fixing frame, a mounting seat, a cutting knife and a driving device, the fixing frame is located at the edge end of cloth. The installation base is installed on the fixing frame. The cutting knife is in a boomerang shape, and a sharp corner of a dart head at the middle end of the boomerang is rotationally connected to the mounting seat; a blade is arranged on one side of the cutting knife and is positioned on a cloth feeding path of the loom; the driving structure is used for driving the cutter to move back and forth in the cloth feeding direction of the loom. The driving structure drives the cutter to rotate back and forth in the cloth feeding direction. Therefore, the cutter only cuts off the Textilene cloth with a small distance every time the Textilene cloth moves back and forth. Meanwhile, due to the fact that a rotary cutting mode is adopted, the included angle between the cutting edge of the cutting knife and the warp of the textilene cloth is continuously changed during cutting, the influence of elastic force on the cutting knife is reduced, and the situations that the cutting knife is broken and the textilene cloth cannot be cut off are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to special textile production field, especially a kind of edge cutting structure of loom. BACKGROUND

[0002] Tesslin is special textile produced by shuttleless machine, composite yarn with special package structure, namely PVC / PET skin-core type yarn.The core adopts high-strength polyester industrial filament, and the skin layer is polyvinyl chloride (PVC) material resistant to aging and ultraviolet radiation.Polyester filament is stretched and wrapped, and the composite yarn with smooth surface, waterproof, oil-proof, non-toxic and cool feeling is formed by drawing and cooling.The warp yarn is made into a beam by an intelligent warping machine without sizing, and is woven into a net on a flexible rapier loom, and then is finished into the final product.

[0003] When tesslin is woven into a mesh, the excess yarn at the edge needs to be cut off.Usually, the loom cuts off the waste edge in a straight line with one cut, but when facing high-strength and elastic tesslin yarn, the knife may break or the yarn may be pushed by the knife without being cut off, which affects the structure and production efficiency of tesslin fabric. UTILITY MODEL CONTENT

[0004] To reduce the situation that the knife breaks or the yarn is pushed by the knife without being cut off when cutting the edge of tesslin fabric, the application provides an edge cutting structure of loom.

[0005] The edge cutting structure of loom provided by the application adopts the following technical solution:

[0006] An edge cutting structure of loom, comprising a fixing frame, a mounting seat, a cutting knife and a driving device, wherein the fixing frame is located at the edge end of the fabric, the mounting seat is installed on the fixing frame, the cutting knife is in the shape of a boomerang, and the tip of the boomerang is rotatably connected to the mounting seat, one side of the cutting knife is provided with a cutting edge and is located on the fabric feeding path of the loom, and the driving structure is used to drive the cutting knife to move back and forth along the fabric feeding direction.

[0007] Through the above technical solution, the driving structure drives the cutting knife to rotate back and forth along the fabric feeding direction, so that the cutting knife cuts off only a small distance of tesslin fabric each time, and since the cutting knife uses a rotary cutting method, the angle between the cutting edge of the cutting knife and the warp yarn of tesslin fabric changes constantly when cutting, which reduces the influence of elasticity on the cutting knife, and further reduces the situation of broken knife and unable to cut off tesslin fabric.

[0008] Preferably, the driving device comprises a rotating rod, a convex strip and a power source, the rotating rod is rotationally connected to the fixing frame, the length direction of the rotating rod is perpendicular to the cloth feeding direction and passes through the lower part of the mounting seat, the power source is used to drive the rotating rod to rotate, the convex strip is fixed to the outer circumferential surface of the rotating rod along the length direction of the rotating rod, and the cutting knife blade side is located on the rotating path of the convex strip.

[0009] Through the above technical scheme, when the rotating rod rotates, since the cutting knife blade is located on the rotating path of the convex strip, when the convex strip abuts against the cutting knife blade, the cutting knife blade will be lifted by the convex strip, so as to move away from the cloth, and after the convex strip passes through the cutting knife blade, the cutting knife blade will be automatically reset under the action of gravity, so that the cutting knife moves back and forth to cut the cloth.

[0010] Preferably, the other side of the cutting knife which is not sharpened is provided with a reset spring, both ends of the reset spring are respectively mounted on the cutting knife and the mounting seat, and the reset spring always keeps in a compressed state.

[0011] Through the above technical scheme, the reset spring increases the reset speed of the cutting knife, so as to enhance the cutting effect of the cutting knife.

[0012] Preferably, the two sides of the contact part between the cutting knife and the convex strip are respectively provided with a push block, the contact part between the convex strip and the cutting knife is provided with an avoiding slot, and the two sides of the avoiding slot are respectively provided with a driving block which faces the cutting knife; the push block is located on the rotating path of the driving block, and the end of the driving block which faces the cutting knife is provided with a round corner.

[0013] Through the above technical scheme, if the cutting knife is driven to move back and forth by the long-term driving of the convex strip on the blade, the blade will inevitably be blunted and cracks will appear on the blade, thereby affecting the service life of the blade; the avoiding slot is arranged on the convex strip to avoid the blade, and the driving block is used to drive the push block, so as to achieve the purpose of driving the cutting knife to move back and forth, thereby avoiding the influence of the convex strip on the blade.

[0014] Preferably, a pressing rod is rotationally connected to the fixing frame, the length direction of the pressing rod is perpendicular to the cloth feeding direction, and the pressing rod is used to abut the edge of the cloth against the loom.

[0015] Through the above technical scheme, the cloth is pressed by the pressing rod to prevent the edge of the cloth from being curled during the cloth feeding process, thereby affecting the cutting effect.

[0016] Preferably, a groove is arranged on the pressing rod, and the groove is arranged around the pressing rod.

[0017] Through the above technical scheme, the groove reduces the contact area between the pressing rod and the cloth, thereby reducing the friction, and further ensuring the smooth movement of the cloth and reducing the friction damage of the cloth caused by the pressing rod.

[0018] Preferably, the fixing frame is provided with a mounting column, the length direction of the mounting column is perpendicular to the cloth feeding direction; the mounting seat is provided with a movable hole, and the mounting seat is movably arranged on the mounting column through the movable hole; the mounting seat is provided with a threaded slot for a bolt, and the threaded slot is located above the movable hole and communicates with the movable hole.

[0019] Through the above technical scheme, the mounting seat can be movably arranged on the mounting column through the movable hole, so as to change the position of the cutting knife to adapt to different cloth widths; and after adjusting the position of the mounting seat, the bolt is inserted into the threaded hole and tightened to abut against the mounting column, and the position of the mounting seat is limited by the friction force.

[0020] Preferably, one end of the mounting column is provided with a limiting rod, the length direction of the limiting rod is parallel to the length direction of the mounting column; and the mounting seat is provided with a limiting hole, and the limiting rod is inserted into the limiting hole.

[0021] Through the above technical scheme, since the mounting column is in a cylindrical shape, when the mounting seat is moved and the bolt is disassembled, the mounting seat has a probability of rotating to knock the lower cutting knife on the loom; and the tightened bolt cannot completely ensure that the mounting seat will not rotate during work; the purpose of the limiting rod is to form two-point support with the mounting column to avoid the rotation of the mounting seat.

[0022] The technical effects of the utility model mainly embody in the following aspects:

[0023] 1. The utility model discloses a cutting knife and driving device, utilize driving device to make cutting knife rotate back and forth cut cloth, let cutting knife blade be in cutting and the included angle between cloth warp is changed constantly, thereby reduce the influence of elasticity to cutting knife, and then reduce broken knife and the situation of being unable to cut teslin cloth;

[0024] 2. The utility model discloses a convex strip and a rotating rod to act as a driving device, which achieves the purpose of reciprocating movement of the cutting knife by using a simple structure.

[0025] 3. The utility model discloses a reset spring to speed up the reset speed of the cutting knife and enhance the cutting effect. DRAWINGS

[0026] Figure 1 It is a whole structure schematic view of the embodiment of the application;

[0027] Figure 2 It is a whole structure schematic view of another perspective of the embodiment of the application;

[0028] Figure 3 It is an enlarged schematic view of A in the embodiment of the application. Figure 2

[0029] ​Fig. 1 is a fixed frame; 2 is a mounting seat; 21 is a movable hole; 22 is a threaded groove; 23 is a limiting hole; 3 is a cutting knife; 31 is a dart sharp corner; 32 is a knife edge side; 4 is a driving device; 41 is a rotating rod; 42 is a convex strip; 421 is an avoiding groove; 422 is a driving block; 5 is a return spring; 6 is a push block; 7 is a pressing rod; 71 is a slot; 8 is a mounting column; 9 is a bolt; 10 is a limiting rod; 20 is a cloth feeding direction. DETAILED DESCRIPTION

[0030] The specific embodiments of the present application are further described below in detail to make the technical scheme of the present application more easily understood and mastered. Figures 1-3 The specific embodiments of the present application are further described below in detail to make the technical scheme of the present application more easily understood and mastered.

[0031] The application discloses an edge cutting structure of a loom:

[0032] Referring to Figures 1-2 An edge cutting structure of a loom, comprising a fixed frame 1, a mounting seat 2, a cutting knife 3 and a driving device 4; the fixed frame 1 is located at the edge end of cloth, and the mounting seat 2 is mounted on the fixed frame 1; the cutting knife 3 is in the shape of a whirling dart, and the dart sharp corner 31 at the middle end of the whirling dart is rotationally connected to the mounting seat 2; one side of the cutting knife 3 is provided with a knife edge and is located on the cloth feeding path of the loom; the driving structure is used for driving the cutting knife 3 to move back and forth along the cloth feeding direction 20 of the loom. The driving structure drives the cutting knife 3 to rotate back and forth along the cloth feeding direction 20; so that the cutting knife 3 cuts only a small distance of the TESLIN cloth each time; at the same time, since the cutting mode is rotation, the angle between the knife edge of the cutting knife 3 and the warp of the TESLIN cloth changes constantly when the knife edge cuts in, so that the influence of the elastic force on the cutting knife 3 is reduced, and the situation of broken knife and the TESLIN cloth being unable to be cut is reduced.

[0033] Referring to Figures 1-2 The driving device 4 comprises a rotating rod 41, a convex strip 42 and a power source; the rotating rod 41 is rotationally connected to the fixed frame 1, and the length direction of the rotating rod 41 is perpendicular to the cloth feeding direction 20 and passes through below the mounting seat 2; the power source is used for driving the rotating rod 41 to rotate; the convex strip 42 is fixed to the outer circumferential surface of the rotating rod 41 along the length direction of the rotating rod 41; the knife edge side 32 of the cutting knife is located on the rotating path of the convex strip 42. When the rotating rod rotates, since the knife edge of the cutting knife 3 is located on the rotating path of the convex strip 42, when the convex strip 42 abuts against the knife edge of the cutting knife 3, the knife edge of the cutting knife 3 will be lifted by the convex strip 42, so as to be far away from the cloth; after the convex strip 42 passes through the knife edge of the cutting knife 3, the knife edge of the cutting knife 3 will be automatically reset under the action of gravity, so that the cutting knife 3 moves back and forth to cut the cloth. The power source can adopt a motor to drive the rotating rod 41 to rotate.

[0034] Referring to Figure 2The other side of the cutting knife 3 which is not sharpened is provided with a reset spring 5, both ends of the reset spring 5 are respectively arranged on the cutting knife 3 and the mounting seat 2, and the reset spring 5 is always kept in a compressed state. The reset spring 5 increases the reset speed of the cutting knife 3, thereby enhancing the cutting effect of the cutting knife 3.

[0035] With reference to Figure 3 The cutting knife 3 is provided with a push block 6 on both sides of the contact position with the convex strip 42, the convex strip 42 is provided with an avoiding groove 421 at the contact position with the cutting knife 3, and the avoiding groove 421 is provided with a driving block 422 which faces the cutting knife 3 on both sides. The push block 6 is located in the rotating path of the driving block 422, and the driving block 422 is provided with a round corner at the end which faces the cutting knife 3. If the cutting knife 3 is driven to move back and forth by the convex strip 42 for a long time, the cutting edge will be blunted and cracks will appear on the cutting edge, thereby affecting the service life of the cutting edge. The avoiding groove 421 is arranged on the convex strip 42 to avoid the cutting edge, and the driving block 422 is arranged to push the push block 6, so as to achieve the purpose of driving the cutting knife 3 to move back and forth, thereby avoiding the influence of the convex strip 42 on the cutting edge.

[0036] With reference to Figure 2 The fixed frame 1 is rotatably connected with a pressing rod 7, the length direction of the pressing rod 7 is perpendicular to the cloth feeding direction 20, and the pressing rod 7 is used to abut the edge of the cloth on the loom. The cloth is pressed by the pressing rod 7 to prevent the edge of the cloth from curling during the cloth feeding process and affecting the cutting effect. The pressing rod 7 is provided with a groove strip 71 which surrounds the pressing rod 7. The groove strip 71 reduces the contact area between the pressing rod 7 and the cloth, thereby reducing the friction; and further ensures the smooth movement of the cloth and reduces the friction damage of the cloth by the pressing rod 7.

[0037] With reference to Figures 1-2 The fixed frame 1 is provided with a mounting column 8, the length direction of the mounting column 8 is perpendicular to the cloth feeding direction 20; the mounting seat 2 is provided with a movable hole 21, and the mounting seat 2 is movably arranged on the mounting column 8 through the movable hole 21. The mounting seat 2 is provided with a threaded groove 22 through which the bolt 9 passes, and the threaded groove 22 is located above the movable hole 21 and communicates with the movable hole 21. The mounting seat 2 can be moved on the mounting column 8 through the movable hole 21, so as to change the position of the cutting knife 3 to adapt to different widths of the cloth; and after the position of the mounting seat 2 is adjusted, the bolt 9 is inserted into the threaded hole and is tightened to abut on the mounting column 8, and the position of the mounting seat 2 is limited by the friction force.

[0038] With reference to Figure 1One end of the mounting column 8 is provided with a limiting rod 10, and the length direction of the limiting rod 10 is parallel to the length direction of the mounting column 8; a limiting hole 23 is formed in the mounting seat 2, and the limiting rod 10 is inserted into the limiting hole 23. Since the mounting column 8 is in a cylindrical shape, in order to move the mounting seat 2 to disassemble the bolt 9, the mounting seat 2 has a probability of rotating to knock the lower cutting knife 3 on the loom; and the tightened bolt 9 cannot completely ensure that the mounting seat 2 will not rotate during work; the purpose of the limiting rod 10 is to form two-point support with the mounting column 8 to avoid the rotation of the mounting seat 2.

[0039] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific implementation manners, and the technical solutions formed by equivalent replacement or equivalent transformation all fall within the scope required to be protected by the present application.

Claims

1. A trimming structure for a loom, characterized in that, It includes a fixed frame (1), a mounting base (2), a cutting blade (3), and a driving device (4); the fixed frame (1) is located at the edge of the fabric, and the mounting base (2) is mounted on the fixed frame (1); the cutting blade (3) is boomerang-shaped, and the tip (31) of the boomerang at the middle end is rotatably connected to the mounting base (2); the cutting blade (3) has a cutting edge on one side and is located on the fabric feeding path of the loom; the driving device (4) is used to drive the cutting blade (3) to move back and forth along the fabric feeding direction (20) of the loom.

2. The edge trimming structure of a loom according to claim 1, characterized in that, The driving device (4) includes a rotating rod (41), a protruding strip (42), and a power source. The rotating rod (41) is rotatably connected to the fixed frame (1). The length direction of the rotating rod (41) is perpendicular to the fabric feeding direction (20) and passes under the mounting base (2). The power source is used to drive the rotating rod (41) to rotate. The protruding strip (42) is fixed on the outer circumference of the rotating rod (41) along the length direction of the rotating rod (41). The cutting blade edge (32) is located on the rotation path of the protruding strip (42).

3. The edge trimming structure of a loom according to claim 1, characterized in that, A return spring (5) is installed on the other side of the unsharpened cutting blade (3). The two ends of the return spring (5) are respectively installed on the cutting blade (3) and the mounting base (2). The return spring (5) is always kept in a compressed state.

4. The edge trimming structure of a loom according to claim 2, characterized in that, Push blocks (6) are fixed on both sides of the contact point between the cutting blade (3) and the protrusion (42). A relief groove (421) is provided at the contact point between the protrusion (42) and the cutting blade (3). A drive block (422) facing the cutting blade (3) is fixed on both sides of the relief groove (421). The push block (6) is located on the rotation path of the drive block (422). The end of the drive block (422) facing the cutting blade (3) has a rounded corner.

5. The edge trimming structure of a loom according to claim 1, characterized in that, A pressure rod (7) is rotatably connected to the fixed frame (1). The length direction of the pressure rod (7) is perpendicular to the fabric feeding direction (20). The pressure rod (7) is used to press the edge of the fabric against the weaving machine.

6. The edge trimming structure of a loom according to claim 5, characterized in that, The pressure rod (7) is provided with a groove (71) which surrounds the pressure rod (7).

7. The edge trimming structure of a loom according to claim 1, characterized in that, The mounting bracket (1) is equipped with a mounting column (8), the length direction of which is perpendicular to the fabric feeding direction (20); the mounting base (2) is provided with a movable hole (21), and the mounting base (2) moves on the mounting column (8) through the movable hole (21); the mounting base (2) is provided with a threaded groove (22) for the bolt (9) to pass through, the threaded groove (22) is located directly above the movable hole (21) and communicates with the movable hole (21).

8. The edge trimming structure of a loom according to claim 7, characterized in that, A limiting rod (10) is installed at one end of the mounting column (8), and the length direction of the limiting rod (10) is parallel to the length direction of the mounting column (8); a limiting hole (23) is opened on the mounting base (2), and the limiting rod (10) is inserted into the limiting hole (23).

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