Shearing device of weaving machine

Abstract

The utility model discloses a loom shearing device which comprises a base, a cam, a swing arm, a movable cutter assembly and a fixed cutter assembly, the cam and the swing arm are respectively installed on the base in a rotating mode, the fixed cutter assembly is fixedly installed on the base, one end of the swing arm is matched with the cam in a rolling mode, and the other end of the swing arm is fixedly connected with the movable cutter assembly. The movable cutter assembly is movably matched with the fixed cutter assembly, and a pressure adjusting assembly is arranged between the swing arm and the fixed cutter assembly. The cam rotates to drive the swing arm to move up and down, the swing arm drives the movable cutter assembly to move up and down, the movable cutter assembly and the fixed cutter assembly are matched to shear weft yarn, and the pressure adjusting assembly adjusts rolling fit between the swing arm and the cam. The cam drives the single arm to move without being limited by the use environment, and the structure is simpler.

Description

TECHNICAL FIELD

[0001] The utility model relates to weft processing equipment technical field, concretely relates to loom shearing device. BACKGROUND

[0002] Weft is one kind of machine woven yarn, the yarn in the woven cloth is perpendicular to the cloth edge and horizontally arranged. In order to ensure the softness of weft, it is not required to have too high strength, so the degree of yarn twisting can be appropriately reduced. Because weft is a soft material, it is inconvenient to cut it mechanically. In the prior art, a weft cutting device is disclosed in Chinese utility model patent with authorization number CN214782425U, which comprises a rack, a workbench is installed on the rack, a support is also fixed on the rack, a traction roller is horizontally rotatable on the support, the end of the traction roller is connected with a power structure capable of driving it to rotate, a cylinder is fixed on the support, and the piston rod of the cylinder is vertically downward, the end of the piston rod of the cylinder is connected with a cutter, and the cutter is driven by the cylinder to cut the weft. The scheme cuts the weft by the piston of the cylinder driving the blade, and the use environment must have a stable air source supply, but most of the loom factories using the device have no air source supply, so the use of the device is greatly limited. SUMMARY

[0003] In view of the above technical problems, the utility model provides a loom shearing device, compared with the limitation of air source supply required by the cylinder, the single-arm movement driven by the cam is not limited by the use environment, and the structure is simpler.

[0004] The technical scheme adopted by the utility model is as follows: a loom shearing device, comprising a base, a cam, a swing arm, a movable cutter assembly and a fixed cutter assembly, the cam and the swing arm are rotatably installed on the base, the fixed cutter assembly is fixedly installed on the base, one end of the swing arm is in rolling cooperation with the cam, the other end of the swing arm is fixedly connected with the movable cutter assembly, the movable cutter assembly is in movable cooperation with the fixed cutter assembly, and a pressure regulating assembly is arranged between the swing arm and the fixed cutter assembly.

[0005] Optionally, the fixed cutter assembly comprises a first fixed plate, a second fixed plate and a fixed blade which are sequentially fixedly connected, the first fixed plate is fixedly connected with the base, and the fixed blade is in movable cooperation with the movable cutter assembly.

[0006] Optionally, the swing arm comprises a first swing rod and a second swing rod which is arranged at an angle with the first swing rod, one end of the first swing rod away from the second swing rod is provided with a roller, the roller is in rolling cooperation with the cam, the connection between the first swing rod and the second swing rod is rotatably connected with the base, and the pressure regulating assembly is arranged between the second swing rod and the first fixed plate.

[0007] Optionally, the pressure regulating assembly comprises a spring and a screw rod, the screw rod is connected with the second swing rod, one end of the spring is connected with the first fixed plate, and the other end of the spring is connected with the screw rod.

[0008] Optionally, the movable cutter assembly comprises a movable rod, a rotating rod and a movable blade, one end of the movable rod is movably connected with the second swing rod, the other end of the movable rod is provided with the rotating rod, one end of the movable blade is rotatably connected with the fixed blade, and the other end of the movable blade movably abuts against the rotating rod.

[0009] Optionally, the movable blade is provided with a groove, and the rotating rod movably abuts against the upper groove wall and the lower groove wall of the groove.

[0010] Optionally, the second swing rod is provided with a sliding groove at the end away from the first swing rod, the movable rod is slidably connected with the sliding groove, the second swing rod is provided with a strip-shaped hole on the side away from the sliding groove, and the movable rod is provided with a threaded hole in communication with the strip-shaped hole.

[0011] Optionally, the movable cutter assembly is correspondingly provided with a weft insertion guide rail, the weft insertion guide rail is provided with a yarn blocking plate and a yarn blocking sheet on the side facing the movable cutter, the yarn blocking plate is provided with a wire passing groove, one end of the yarn blocking sheet is connected with the weft insertion guide rail through a screw, and the other end of the yarn blocking sheet is matched with the wire passing groove.

[0012] Optionally, the base is provided with a dust removal brush, and a brush head of the dust removal brush abuts against the cam.

[0013] The utility model discloses a cam driving single-arm movement is not limited by the use environment, and the structure is simpler.

[0014] (2) the screw rod is connected with the screw hole through the strip-shaped hole, the movable rod and the second swing rod are tightly connected by screwing the screw rod, when the shearing length of the movable blade needs to be adjusted, the screw rod is loosened, the movable rod is moved up and down along the sliding groove to the appropriate distance, and the screw rod is tightened again.

[0015] (3) the yarn blocking sheet is an elastic sheet, is installed on the weft insertion guide rail through the screw and the nut, the height of the yarn blocking sheet can be adjusted by loosening the nut, the weft yarn passes through the gap between the upper surface of the yarn blocking sheet and the wire passing groove, and the tension of the sword head when the weft yarn is sheared can be controlled by adjusting the height of the yarn blocking sheet in the wire passing groove. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1The structure schematic view of the loom shearing device is provided for the embodiment of the utility model.

[0017] Fig. 2 The schematic view of the movable cutter assembly of the loom shearing device is provided for the embodiment of the utility model.

[0018] Fig. 3 The top view schematic view of the loom shearing device is provided for the embodiment of the utility model.

[0019] The marks in each drawing are as follows: 1, base; 2, cam; 3, swing arm; 31, first swing rod; 32, second swing rod; 33, roller; 34, sliding groove; 35, strip-shaped hole; 4, movable cutter assembly; 41, movable rod; 42, rotating rod; 43, movable blade; 44, recess; 5, fixed cutter assembly; 51, first fixed plate; 52, second fixed plate; 53, fixed blade; 6, pressure regulating assembly; 61, spring; 62, screw rod; 7, weft insertion guide rail; 71, yarn blocking plate; 72, yarn blocking sheet; 73, screw; 8, dust removal brush. DETAILED DESCRIPTION

[0020] The application will be further described in detail below in combination with the drawings and embodiments.

[0021] As Figs. 1 to 3 shown, the embodiment discloses a loom shearing device which comprises a base 1, a cam 2, a swing arm 3, a movable cutter assembly 4 and a fixed cutter assembly 5, the cam 2 and the swing arm 3 are rotatably installed on the base 1 respectively, the fixed cutter assembly 5 is fixedly installed on the base 1, one end of the swing arm 3 is in rolling cooperation with the cam 2, the other end of the swing arm 3 is fixedly connected with the movable cutter assembly 4, the movable cutter assembly 4 is in movable cooperation with the fixed cutter assembly 5, and the pressure regulating assembly 6 is arranged between the swing arm 3 and the fixed cutter assembly 5. The cam 2 drives the swing arm 3 to move up and down, the swing arm 3 drives the movable cutter assembly 4 to move up and down, the movable cutter assembly 4 is cooperated with the fixed cutter assembly 5 to shear weft yarn, and the pressure regulating assembly 6 adjusts the rolling cooperation between the swing arm 3 and the cam 2. Compared with the limitation that the air cylinder needs to be supplied with air source, the single-arm movement driven by the cam 2 is not limited by the use environment, and the structure is simpler.

[0022] As Fig. 1 and 2As shown, the fixed cutter assembly 5 comprises a first fixed plate 51, a second fixed plate 52 and a fixed blade 53 fixedly connected in sequence, the first fixed plate 51 is fixedly connected with the base 1, and the fixed blade 53 is movably matched with the movable cutter assembly 4. The swing arm 3 comprises a first swing rod 31 and a second swing rod 32 arranged at an angle with the first swing rod 31, one end of the first swing rod 31 away from the second swing rod 32 is provided with a roller 33, the roller 33 is rollingly matched with the cam 2, the connection between the first swing rod 31 and the second swing rod 32 is rotatably connected with the base 1, and the pressure adjusting assembly 6 is arranged between the second swing rod 32 and the first fixed plate 51. The cam 2 drives the swing arm 3 to swing up and down through the roller 33, so that the movable cutter assembly 4 and the fixed cutter assembly 5 complete a shearing action, the second swing rod 32 and the first fixed plate 51 are arranged approximately in parallel, and the pressure adjusting assembly 6 adjusts the pressure of the rollingly matched relationship between the roller 33 and the cam 2. The pressure adjusting assembly 6 comprises a spring 61 and a screw rod 62, the screw rod 62 is connected with the second swing rod 32, one end of the spring 61 is connected with the first fixed plate 51, and the other end of the spring 61 is connected with the screw rod 62.

[0023] As shown in the drawings, Fig. 2 The movable cutter assembly 4 comprises a movable rod 41, a rotating rod 42 and a movable blade 43, one end of the movable rod 41 is movably connected with the second swing rod 32, the other end of the movable rod 41 is provided with the rotating rod 42, one end of the movable blade 43 is rotatably connected with the fixed blade 53, and the other end of the movable blade 43 movably abuts against the rotating rod 42. The movable blade 43 is provided with a groove 44, and the rotating rod 42 movably abuts against the upper groove wall and the lower groove wall of the groove 44 respectively. One end of the second swing rod 32 away from the first swing rod 31 is provided with a sliding groove 34, the movable rod 41 is slidably connected with the sliding groove 34, one side of the second swing rod 32 away from the sliding groove 34 is provided with a strip-shaped hole 35, and the movable rod 41 is provided with a screw hole in communication with the strip-shaped hole 35. The screw rod 62 is connected with the screw hole in cooperation through the strip-shaped hole 35, the movable rod 41 is tightly connected with the second swing rod 32 by tightening the screw rod 62, when it is needed to adjust the shearing length of the movable blade 43, the screw rod 62 can be loosened, the movable rod 41 is moved up and down along the sliding groove 34 to a suitable distance, and then the screw rod 62 is tightened again.

[0024] As shown in the drawings, Fig. 2As shown, the movable cutter assembly 4 is provided with a weft guide rail 7, the weft guide rail 7 is provided with a yarn blocking plate 71 and a yarn blocking piece 72 on the side of the movable cutter, the yarn blocking plate 71 is provided with a wire passing groove, one end of the yarn blocking piece 72 is connected with the weft guide rail 7 through a screw 73, and the other end of the yarn blocking piece 72 is matched with the wire passing groove. The yarn blocking piece 72 is an elastic piece, which is installed on the weft guide rail 7 through the screw 73 and a nut, the height of the yarn blocking piece 72 can be adjusted by loosening the nut, the weft yarn passes through the gap between the upper surface of the yarn blocking piece 72 and the wire passing groove, and the tension of the sword head when the weft yarn is cut can be controlled by adjusting the height of the yarn blocking piece 72 in the wire passing groove.

[0025] As shown in Fig. 1 and 3 As shown, the base 1 is provided with a dust removal brush 8, and the brush head of the dust removal brush 8 abuts against the cam 2. When sundries are adhered to the cam 2, the brush head can clean in time.

[0026] It can be understood that the above-described specific embodiments are only used for explaining the related utility model, and are not limited to the utility model. In addition, it needs to be explained that, for the convenience of description, only the parts related to the utility model are shown in the drawings. The multiple technical solutions in the same embodiment and the multiple technical solutions of different embodiments can be arranged and combined to form new technical solutions without contradiction or conflict, equivalent structural transformation by using the contents of the utility model specification and the drawings, direct or indirect use in other related technical fields, and all of them are included in the protection scope of the utility model.

Claims

1. A loom cutting device, characterized in that, The utility model provides a cutting device, including base, cam, swing arm, movable cutter assembly and fixed cutter assembly, cam and swing arm are rotatoryly installed on base respectively, fixed cutter assembly is fixedly installed on base, swing arm one end with cam rolling fit, swing arm other end with movable cutter assembly fixed connection, movable cutter assembly with fixed cutter assembly movable cooperation, swing arm with fixed cutter assembly between be equipped with pressure regulating component.

2. The loom cutting device according to claim 1, characterized in that The fixed cutter assembly comprises a first fixed plate, a second fixed plate and a fixed blade which are sequentially fixedly connected, the first fixed plate is fixedly connected with the base, and the fixed blade is movably connected with the movable cutter assembly.

3. The loom cutting device according to claim 2, wherein, The swing arm comprises a first swing rod and a second swing rod which is arranged at an angle with the first swing rod, one end of the first swing rod away from the second swing rod is provided with a roller, the roller is rolling fit with the cam, the connection between the first swing rod and the second swing rod is rotatably connected with the base, and the pressure regulating component is arranged between the second swing rod and the first fixed plate.

4. The loom cutting device according to claim 3, wherein, The pressure regulating component comprises a spring and a screw rod, the screw rod is connected with the second swing rod, one end of the spring is connected with the first fixed plate, and the other end of the spring is connected with the screw rod.

5. The loom cutting device according to claim 3, wherein, The movable cutter assembly comprises a movable rod, a rotating rod and a movable blade, one end of the movable rod is movably connected with the second swing rod, the other end of the movable rod is provided with the rotating rod, one end of the movable blade is rotatably connected with the fixed blade, and the other end of the movable blade movably abuts against the rotating rod.

6. The loom cutting device according to claim 5, wherein, The movable blade is provided with a groove, and the rotating rod movably abuts against the upper groove wall and the lower groove wall of the groove.

7. The loom cutting device of claim 5, wherein, One end of the second swing rod away from the first swing rod is provided with a sliding groove, the movable rod is slidingly connected with the sliding groove, one side of the second swing rod away from the sliding groove is provided with a strip-shaped hole, the movable rod is provided with a screw hole, and the screw hole is in communication with the strip-shaped hole.

8. The loom cutting device according to claim 1, wherein, The movable cutter assembly is correspondingly provided with a weft insertion guide rail, one side of the weft insertion guide rail towards the movable cutter is provided with a yarn blocking plate and a yarn blocking sheet, the yarn blocking plate is provided with a wire passing groove, one end of the yarn blocking sheet is connected with the weft insertion guide rail through a screw, and the other end of the yarn blocking sheet is matched with the wire passing groove.

9. The loom cutting device according to claim 1, wherein, The base is provided with a dust removal brush, and a brush head of the dust removal brush abuts against the cam.

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