Weft yarn cutting device of rapier loom

Abstract

The utility model relates to the technical field of looms, in particular to a weft yarn cutting device of a rapier loom. The weft yarn cutting-off device of the rapier loom comprises supporting plates, the supporting plates are located between the loom and a yarn rolling barrel, the number of the supporting plates is two, the supporting plates are symmetrically distributed, and supporting frames which are symmetrically distributed and movably connected are erected between the two supporting plates; supporting frames are arranged on the opposite faces of the two supporting frames, symmetrically-distributed clamping plates are arranged on the opposite faces of the two supporting frames, a top frame is arranged between the two upper clamping plates, and a grinding groove is formed in the top frame. According to the weft yarn cutting-off device of the rapier loom, the cutting-off of the weft yarn can be achieved through sliding of the cutting knife, the phenomenon that the end of the weft yarn is cut off unevenly can be reduced through the cutting-off mode, and therefore the using effect of the weft yarn cutting-off device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of looms, in particular to a weft yarn cutting device of a rapier loom. Background Art

[0002] Looms, also known as spinning machines, weaving machines, and cotton spinning machines, were originally human-powered. Shuttleless loom technology has been researched since the 19th century and has been gradually introduced to the international market since the 1950s. Looms include both the original shuttle loom and the newer shuttleless looms, including rapier looms, air-jet looms, water-jet looms, and projectile looms. Rapier looms are the mainstream loom type, known for their high speed, stability, and wide adaptability. They are the preferred machine for weaving various grades of clothing fabrics and other greige fabrics.

[0003] The existing Chinese patent publication number is CN214938182U, which is a high-efficiency weft yarn cutting device for a rapier loom. It can be seen from the contents recorded in its specification that this application mainly cuts the weft yarn by lifting the cutter upward and using the force between the weft yarns of the cutter blade. Since the weft yarn has a certain elasticity, this direct offset cutting method will cause uneven cutting at the cutting point of the weft yarn during actual use, which will affect the later use of the weft yarn.

[0004] Therefore, it is necessary to provide a new weft yarn cutting device for rapier loom to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a weft yarn cutting device for a rapier loom.

[0006] The weft yarn cutting device of the rapier loom provided by the utility model comprises: a support plate, the support plate is located between the loom and the roller drum, the support plates are provided with two and are symmetrically distributed, and a symmetrically distributed and movably connected support frame is erected between the two support plates;

[0007] The opposing surfaces of the two support frames are provided with support frames, and the opposing surfaces of the two support frames are provided with symmetrically distributed plywood. A top frame is provided between the two upper plywoods, and a grinding groove is provided inside the top frame. A movably connected cutting knife is provided between the two lower plywoods, and the outer wall of the cutting knife is abutted against and slidably connected to the inner wall of the grinding groove.

[0008] Preferably, a pressure sensor is embedded inside the clamping plate, and the gap between the two lower clamping plates is larger than the specifications of the cutting knife.

[0009] Preferably, the support plates are of rectangular structure, a rotating rod rotatably connected is set between one corner of the two support plates, and a vertical rod is set between the remaining corners of the two support plates.

[0010] Preferably, a rotating motor is provided on the top of the upper support plate, and the output end of the rotating motor passes through the support plate and is fixedly connected to the top end of the rotating rod.

[0011] Preferably, symmetrically distributed connecting blocks are provided on both sides of the outer wall of the support frame, and the inner wall of the connecting block corresponding to the position of the vertical pole is slidingly connected to the outer wall of the vertical pole, and the inner wall of the connecting block corresponding to the position of the rotating rod is threadedly connected to the outer wall of the rotating rod, and the thread directions of the threaded structures of the outer wall of the rotating rod and the connecting block are opposite.

[0012] Preferably, a fixedly connected guide frame is mounted inside the support frame below, a rotatably connected screw rod is mounted inside the guide frame, a drive motor is provided at one end of the guide frame, and the output end of the drive motor is fixedly connected to the end of the screw rod.

[0013] Preferably, a support block is provided between the screw rod and the guide frame, the inner wall of the support block is slidingly connected to the outer wall of the guide frame, the inner wall of the support block is threadedly connected to the outer wall of the screw rod, a cylinder is provided on the top of the support block, and the top of the cylinder is connected to the bottom of the cutting knife.

[0014] Compared with the related art, the weft yarn cutting device of the rapier loom provided by the utility model has the following beneficial effects:

[0015] 1. The utility model adopts a sliding manner to set up the cutting knife. During use, after the upper and lower clamping plates complete the clamping of the weft yarn and the cutting knife is abutted against the top frame, the weft yarn can be cut by sliding the cutting knife. This cutting method can reduce the phenomenon of uneven cutting at the end of the weft yarn, thereby improving the use effect of the device.

[0016] 2. The utility model opens a grinding groove inside the top frame, which moves during use. The inner wall of the grinding groove abuts against the outer wall of the cutting knife, so that the cutting knife blade can be ground. This can keep the blade sharp and reduce the phenomenon of blade blunting. Therefore, it is more convenient for the device to cut the weft yarn in the later stage.

[0017] 3. The utility model sets a pressure sensor on the clamping plate. During use, the pressure value can be set according to the pressure to control the clamping force of the clamping plate on the cloth, thereby enabling the device to stably clamp weft cloths of different thicknesses and elasticities, thereby improving the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model provides a structural schematic diagram of a preferred embodiment of a weft yarn cutting device of a rapier loom;

[0019] Figure 2 for Figure 1 Schematic diagram of the connection structure of the support plate and its components;

[0020] Figure 3 for Figure 2 A schematic diagram of the partial structure of the guide frame and top frame and other components shown;

[0021] Figure 4 for Figure 2 Schematic diagram of the structure of the support frame and its components shown.

[0022] Numbers in the figure: 1. Support plate; 11. Vertical pole; 12. Rotating rod; 13. Rotating motor; 2. Support frame; 21. Connecting block; 3. Support frame; 31. Clamping plate; 32. Pressure sensor; 4. Guide frame; 41. Screw rod; 411. Drive motor; 42. Support block; 43. Cylinder; 44. Cutting knife; 5. Top frame; 51. Grinding trough; 6. Loom; 7. Yarn roller. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0025] See also Figures 1 to 4 The embodiment of the present invention provides a weft yarn cutting device for a rapier loom, and the weft yarn cutting device for a rapier loom includes: a support plate 1, and the support plate 1 is located between the loom 6 and the roller tube 7.

[0026] In the embodiments of the present invention, please refer to Figures 1 to 4The support plate 1 is provided with two and symmetrically distributed, and a symmetrically distributed and movably connected support frame 2 is mounted between the two support plates 1; the opposite surfaces of the two support frames 2 are provided with support frames 3, and the opposite surfaces of the two support frames 3 are provided with symmetrically distributed plywood 31, a top frame 5 is provided between the upper two plywoods 31, and a movably connected cutting knife 44 is provided between the lower two plywoods 31, and the outer wall of the cutting knife 44 is against the inner wall of the top frame 5, and the interior of the lower support frame 3 is provided with a fixedly connected guide frame 4, and the interior of the guide frame 4 is provided with a rotatably connected screw rod 41, one end of the guide frame 4 is provided with a driving motor 411, and the output end of the driving motor 411 is fixedly connected to the end of the screw rod 41, a support block 42 is provided between the screw rod 41 and the guide frame 4, the inner wall of the support block 42 is slidably connected to the outer wall of the guide frame 4, the inner wall of the support block 42 is threadedly connected to the outer wall of the screw rod 41, and a cylinder 43 is provided on the top of the support block 42, and the top of the cylinder 43 is connected to the bottom of the cutting knife 44.

[0027] It should be noted that: through the setting of the cylinder 43, when in use, the working cylinder 43 can drive the top cutting knife 44 to move in the vertical direction, and then the cutting knife 44 can be stably moved between the two clamping plates 31 below, so that the cutting knife 44 can be smoothly inserted into the top frame 5 and abut against the inner wall of the top frame 5, and then when the driving motor 411 drives the screw rod 41 to rotate, so that the screw rod 41 drives the support block 42 to slide on the guide frame 4 through the threaded structure, the top cutting knife 44 can be driven to slide and cut the weft yarn. The top frame 5 limits the top of the weft yarn, which can avoid excessive deformation of the weft yarn during the cutting process, resulting in messy and uneven weft yarn and cutting port, thereby improving the cutting effect of the device.

[0028] At the same time, the grinding groove 51 is opened. Since the specifications of the inner wall of the grinding groove 51 are the same as the specifications of the outer wall of the cutting knife 44, the grinding groove 51 can grind the blade of the cutting knife 44 during the movement of the cutting knife 44, thereby keeping the blade sharp and reducing the phenomenon of blade blunting. Therefore, it is more convenient for the device to cut the weft yarn in the later stage.

[0029] In the embodiments of the present invention, please refer to Figures 1 to 4 A pressure sensor 32 is embedded inside the clamping plate 31 , and the gap between the two clamping plates 31 below is larger than the specification of the cutting knife 44 .

[0030] It should be noted that: by arranging a pressure sensor 32 on the splint 31, during use, the pressure value can be set according to the pressure to control the clamping force of the splint 31 on the fabric, so that the device can stably clamp the weft fabrics of different thicknesses and elasticities, thereby improving the scope of application of the device. Since the gap between the two lower splints 31 is relatively large, the movable cutting knife 44 can shuttle smoothly between the two lower splints 31, so that the cutting knife 44 can be moved between the two splints 31 for storage when not in use, thereby making the later movement of the weft yarn smoother.

[0031] In the embodiments of the present invention, please refer to Figures 1 to 4 The support plate 1 is a rectangular structure. A rotating rod 12 is rotatably connected between one corner of the two support plates 1, and a vertical rod 11 is set between the remaining corners of the two support plates 1. A rotating motor 13 is provided on the top of the upper support plate 1, and the output end of the rotating motor 13 passes through the support plate 1 and is fixedly connected to the top of the rotating rod 12. Both sides of the outer wall of the support frame 2 are provided with symmetrically distributed connecting blocks 21. The inner wall of the connecting block 21 corresponding to the position of the vertical rod 11 is slidably connected to the outer wall of the vertical rod 11, and the inner wall of the connecting block 21 corresponding to the position of the rotating rod 12 is threadedly connected to the outer wall of the rotating rod 12, and the thread directions of the threaded structures of the outer wall of the rotating rod 12 and the connecting block 21 are opposite.

[0032] It should be noted that: through the setting of the vertical rod 11, when the rotating motor 13 drives the rotating rod 12 to rotate, so that the rotating rod 12 drives the connecting block 21 and its corresponding support frame 2 to move through the threaded structure with opposite thread directions on both sides of the outer wall, the vertical rod 11 can guide the support frame 2, thereby avoiding the support frame 2 from rotating synchronously with the rotating rod 12, and thus the upper and lower support frames 2 can be stably moved relative to each other or moved away from each other, so as to smoothly drive the corresponding top frame 5 and cutting knife 44 to move.

[0033] The working principle of the weft yarn cutting device of the rapier loom provided by the utility model is as follows;

[0034] When the present cutting device is used, when it is necessary to cut the weft yarn, the rotating motor 13 can be controlled to drive the rotating rod 12 to rotate. At this time, the rotating rod 12 can drive the support frame 2 to move relative to each other through the thread structures on both sides of the outer wall with opposite thread directions. The relatively moving support frame 2 can drive the cutting knife 44, the top frame 5, the support frame 3 and other components to move relative to each other.

[0035] During the movement of the support frame 3, the clamping plate 31 on the support frame 3 can abut against the outer wall of the weft yarn, and during this process, the clamping force of the clamping plate 31 on the weft yarn can be monitored by the pressure sensor. After the weft yarn is stably clamped, the cylinder 43 can be controlled to drive the cutting knife 44 to move, so that the weft yarn is smoothly inserted into the top frame 5. During this process, the blade of the cutting knife 44 can complete the cutting of the weft yarn by abutting against the weft yarn.

[0036] Then, the driving motor 411 drives the screw rod 41 to rotate, so that the screw rod 41 drives the support block 42 to move on the guide frame 4 through the threaded structure. The moving support block 42 can drive the cutting knife 44 on the top to slide and cut the weft yarn. During the cutting process, the top frame 5 limits the top of the weft yarn, which can avoid excessive deformation of the weft yarn during the cutting process, resulting in messy and uneven weft yarn and cutting port, thereby improving the cutting effect of the device.

[0037] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0038] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A weft yarn cutting device for a rapier loom, characterized in that: include: A support plate (1), the support plate (1) being located between the loom (6) and the yarn roller (7), the support plates (1) being provided with two and symmetrically distributed, and a symmetrically distributed and movably connected support frame (2) being erected between the two support plates (1); The opposing surfaces of the two support frames (2) are each provided with a support frame (3), and the opposing surfaces of the two support frames (3) are each provided with symmetrically distributed clamping plates (31), a top frame (5) is provided between the two upper clamping plates (31), a grinding groove (51) is provided inside the top frame (5), and a movably connected cutting knife (44) is provided between the two lower clamping plates (31), and the outer wall of the cutting knife (44) is abutted against and slidably connected to the inner wall of the grinding groove (51).

2. The weft yarn cutting device of the rapier loom according to claim 1, characterized in that: A pressure sensor (32) is embedded inside the clamping plate (31), and the gap between the two clamping plates (31) at the bottom is larger than the size of the cutting knife (44).

3. The weft yarn cutting device of the rapier loom according to claim 1, characterized in that: The support plate (1) is a rectangular structure, a rotating rod (12) is provided between one corner of the two support plates (1), and a vertical rod (11) is provided between the remaining corners of the two support plates (1).

4. The weft yarn cutting device of the rapier loom according to claim 1, characterized in that: A rotating motor (13) is provided on the top of the upper support plate (1), and the output end of the rotating motor (13) passes through the support plate (1) and is fixedly connected to the top end of the rotating rod (12).

5. The weft yarn cutting device of the rapier loom according to claim 1, characterized in that: Both sides of the outer wall of the support frame (2) are provided with symmetrically distributed connecting blocks (21), the inner wall of the connecting block (21) corresponding to the position of the vertical rod (11) is slidably connected to the outer wall of the vertical rod (11), and the inner wall of the connecting block (21) corresponding to the position of the rotating rod (12) is threadedly connected to the outer wall of the rotating rod (12), and the thread directions of the threaded structures of the outer wall of the rotating rod (12) and the connecting block (21) are opposite.

6. The weft yarn cutting device of the rapier loom according to claim 1, characterized in that: A fixedly connected guide frame (4) is mounted inside the support frame (3) below, a rotatably connected screw rod (41) is mounted inside the guide frame (4), a drive motor (411) is mounted at one end of the guide frame (4), and an output end of the drive motor (411) is fixedly connected to the end of the screw rod (41).

7. The weft yarn cutting device of the rapier loom according to claim 6, characterized in that: A support block (42) is provided between the screw rod (41) and the guide frame (4), the inner wall of the support block (42) is slidably connected to the outer wall of the guide frame (4), the inner wall of the support block (42) is threadedly connected to the outer wall of the screw rod (41), and a cylinder (43) is provided on the top of the support block (42), and the top of the cylinder (43) is connected to the bottom of the cutting knife (44).

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