A loom slitter device

Abstract

The application discloses a loom waste edge collecting device. Weft is inserted from the first end of the loom to the second end of the loom to weave the fabric with weft and warp. The waste edge collecting device is arranged at the second end of the loom and at one side of the fabric. The waste edge collecting device comprises a weft catching mechanism, a shearing mechanism and a yarn sucking mechanism. The weft catching mechanism comprises a frame structure and a weft catching component. The frame structure is arranged at the second end of the loom. The frame structure is provided with a containing groove. The first end of the weft catching component is arranged in the containing groove. The weft catching component moves along the direction parallel to the warp. The shearing mechanism is arranged at the second end of the weft catching component and is used for shearing the weft at the edge of the fabric. The yarn sucking mechanism is arranged at the end of the shearing mechanism away from the loom and is used for collecting the weft sheared by the shearing mechanism. The yarn pressing mechanism is arranged in the yarn sucking mechanism and is used for pressing the weft collected by the yarn sucking mechanism. The loom waste edge collecting device can shorten the length of the weft at the edge of the fabric, reduce the production cost and improve the production efficiency.

Description

Technical Field

[0001] This application relates to the field of electronic fiberglass cloth production technology, and in particular to a waste edge collection device for a weaving machine. Background Technology

[0002] Currently, electronic fabrics are mostly produced using air-jet looms. Air-jet looms use compressed air as the weft insertion medium. The compressed air jets from nozzles create frictional traction on the weft yarn, pulling it through the shed to complete the weft insertion process. During electronic fabric production, each weft insertion generates approximately 7.5 cm of waste selvage yarn. This waste selvage yarn is woven together with multiple weft-catching selvage yarns and then introduced into the waste yarn bobbin. Due to machine structure and quality requirements, directly shortening the length of the waste selvage yarn would result in insufficient suction, causing quality abnormalities such as loose weft. Therefore, shortening the length of the waste selvage yarn is difficult, thus hindering the reduction of electronic fabric production costs. Furthermore, the production process generates a large amount of waste selvage yarn. If not handled promptly, this waste selvage yarn can become entangled in gears, accelerating equipment wear and affecting product quality. Therefore, operators must periodically compact the waste selvage yarn in the waste yarn bobbin, which increases their workload. Utility Model Content

[0003] To address the aforementioned technical problems, this application provides a loom waste edge collection device, which can shorten the length of the weft yarn at the edge of the fabric, reduce production costs, and at the same time reduce the workload of operators and improve production efficiency.

[0004] This application provides a waste selvage collection device for a loom, wherein weft yarns are fed from a first end of the loom to a second end of the loom, causing the weft yarns to be woven with the warp yarns to form a fabric; the waste selvage collection device is disposed at the second end of the loom and located on one side of the fabric, and the waste selvage collection device includes:

[0005] The weft-catching mechanism includes a frame structure and a weft-catching assembly. The frame structure is disposed at the second end of the loom and has a receiving groove. The first end of the weft-catching assembly is disposed in the receiving groove, and the weft-catching assembly moves in a direction parallel to the warp yarn.

[0006] A shearing mechanism, located at the second end of the weft-catching assembly, is used to cut the weft yarns at the edge of the fabric;

[0007] A yarn suction mechanism is provided at the end of the shearing mechanism away from the loom, for collecting the weft yarns cut by the shearing mechanism;

[0008] A yarn pressing mechanism, disposed within the yarn suction mechanism, is used to press the weft yarn collected by the yarn suction mechanism.

[0009] In some embodiments of this application, the shearing mechanism includes:

[0010] A support frame is provided at the second end of the loom;

[0011] The scissors are mounted on the bracket and positioned above the weft yarn;

[0012] A scissor driving unit is connected to the scissors and is used to drive the scissors to move in a vertical direction and cut the weft yarn at the edge of the fabric.

[0013] In some embodiments of this application, the yarn suction mechanism includes:

[0014] A yarn suction structure, wherein the first end of the yarn suction structure is located at the end of the weft capture mechanism away from the fabric, and is used to suck up the weft yarn cut by the shearing mechanism;

[0015] A yarn suction box, which is connected to the second end of the yarn suction structure via a pipe, is used to collect the weft yarns from the edge of the fabric sucked in by the yarn suction structure.

[0016] In some embodiments of this application, the cross-sectional area of ​​the yarn suction structure gradually decreases along the direction from the first end of the yarn suction structure to the second end of the yarn suction structure.

[0017] In some embodiments of this application, the yarn suction structure includes:

[0018] The upper region is provided with a curved tube, which is used to discharge excess gas used for weft insertion and to draw in waste yarn during weft yarn replacement.

[0019] The lower region is used to draw in the weft yarn cut by the shearing mechanism.

[0020] In some embodiments of this application, a material chute is provided on one side of the yarn suction box, and a baffle plate is inserted into the material chute.

[0021] In some embodiments of this application, the yarn pressing mechanism includes:

[0022] A yarn-pressing plate is installed in the yarn-suction box;

[0023] A drive cylinder, connected to the yarn pressing plate, is used to drive the yarn pressing plate to reciprocate between a first position and a second position in the vertical direction to squeeze the weft yarn at the edge of the fabric in the yarn suction box, wherein the first position is higher than the second position.

[0024] In some embodiments of this application, the pressing plate is provided with multiple through holes.

[0025] In some embodiments of this application, the yarn suction box is provided with a connection hole, and the connection hole is connected to the pipe;

[0026] The connection hole is located below the first position.

[0027] In some embodiments of this application, the yarn pressing mechanism further includes:

[0028] Time relay;

[0029] The controller, the time relay, and the drive cylinder are all electrically connected.

[0030] The technical solution provided in this application may include the following beneficial effects:

[0031] The weft-catching component of this application is disposed in the receiving groove of the frame structure, which allows the weft-catching component and the yarn-suction mechanism to be positioned close to the edge of the fabric, thereby shortening the length of the weft yarn at the fabric edge. During the weft-beating process, the weft-catching component can be used to stabilize the feeding of the weft yarn, reduce weft yarn bounce, and improve the uniformity of the cutting mechanism; the cutting mechanism cuts the weft yarn at the edge of the fabric, the yarn-suction mechanism collects the weft yarn cut by the cutting mechanism, and the yarn-pressing mechanism can squeeze the weft yarn collected by the yarn-suction mechanism at a certain frequency to achieve weft yarn collection and compaction, thereby reducing the labor intensity of the operators.

[0032] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0034] Figure 1 This is a top view of a loom waste selvage collection device according to an exemplary embodiment.

[0035] Figure 2 This is a front view of a frame structure according to an exemplary embodiment.

[0036] Figure 3 This is a right view of a frame structure illustrated according to an exemplary embodiment.

[0037] Figure 4 This is a schematic diagram of the structure of a weft-catching hook according to an exemplary embodiment.

[0038] Figure 5 This is a schematic diagram of the structure of a shearing mechanism according to an exemplary embodiment.

[0039] Figure 6 This is a schematic diagram of a yarn suction structure according to an exemplary embodiment.

[0040] Figure 7 This is a schematic diagram of a bent pipe structure according to an exemplary embodiment.

[0041] Figure 8 This is a schematic diagram of the structure of a yarn pressing mechanism according to an exemplary embodiment.

[0042] Figure Labels

[0043] 1. Weft-catching mechanism; 11. Frame structure; 111. Receiving groove; 112. Channel; 12. Weft-catching assembly; 2. Shearing mechanism; 21. Support; 22. Scissors; 3. Yarn suction mechanism; 31. Yarn suction structure; 311. Upper area; 312. Lower area; 32. Yarn suction box; 321. Feeding groove; 322. Connecting hole; 323. Baffle plate; 33. Pipe; 34. Bend; 4. Yarn pressing mechanism; 41. Yarn pressing plate; 411. Through hole; 42. Drive cylinder;

[0044] 10. Loom; 20. Weft yarn; 30. Warp yarn; 40. First position; 50. Second position. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0046] In related technologies, a small steel reed needs to be set on the loom to guide the weft selvage yarn. After the weft selvage yarn is woven together with the weft yarn at the edge of the fabric, it is introduced into the waste yarn bobbin. However, this also makes it difficult to shorten the length of the weft yarn at the edge of the fabric.

[0047] Based on this, this application provides a waste selvage collection device for a loom. Weft yarns are fed from the first end of the loom to the second end, allowing the weft yarns to weave with the warp yarns to form a fabric. The waste selvage collection device is located at the second end of the loom and on one side of the fabric. The waste selvage collection device includes a weft-catching mechanism, a shearing mechanism, a yarn-suction mechanism, and a yarn-pressing mechanism. The weft-catching mechanism includes a frame structure and a weft-catching assembly. The frame structure is located at the second end of the loom and has a receiving groove. The first end of the weft-catching assembly is located in the receiving groove, and the weft-catching assembly moves in a direction parallel to the warp yarns. The shearing mechanism is located at the second end of the weft-catching assembly and is used to cut the weft yarns at the edge of the fabric. The yarn-suction mechanism is located at the end of the shearing mechanism away from the loom and is used to collect the weft yarns cut by the shearing mechanism. The yarn-pressing mechanism is located within the yarn-suction mechanism and is used to compress the weft yarns collected by the yarn-suction mechanism. The waste edge collection device of this application eliminates the need for weft yarn catchers and small reeds, and positions the weft catcher assembly and yarn suction mechanism close to the edge of the fabric to shorten the length of the weft yarn at the fabric edge. During the weft insertion process, the weft catcher assembly passes through the receiving groove and moves in a direction parallel to the warp yarn. After the weft yarn reaches the second end of the loom, the weft catcher assembly can hook the weft yarn to stabilize the weft yarn feeding, reduce weft yarn bounce, and improve the uniformity of the shearing mechanism. The shearing mechanism cuts the weft yarn at the fabric edge, the yarn suction mechanism collects the weft yarn cut by the shearing mechanism, and the yarn pressing mechanism can squeeze the weft yarn collected by the yarn suction mechanism at a certain frequency to achieve weft yarn collection and compaction, reducing the labor intensity of operators.

[0048] The specific embodiments described below are intended to help those skilled in the art understand this embodiment, but this embodiment is not limited to the specific embodiments described below.

[0049] like Figure 1 and Figure 2 As shown, an exemplary embodiment of this application provides a waste selvage collection device for a loom. Weft yarns 20 are fed from the first end of the loom 10 to the second end of the loom 10, causing the weft yarns 20 and warp yarns 30 to be woven into a fabric. The waste selvage collection device is located at the second end of the loom 10 and on one side of the fabric. The waste selvage collection device includes a weft-catching mechanism 1, a cutting mechanism 2, a yarn-suction mechanism 3, and a yarn-pressing mechanism 4. The weft-catching mechanism 1 includes a frame structure 11 and a weft-catching assembly 12. The frame structure 11 is located at the second end of the loom 10 and has a receiving groove 111. The first end of the weft-catching assembly 12 is located in the receiving groove 111, and the weft-catching assembly 12 moves in a direction parallel to the warp yarns 30. The cutting mechanism 2 is located at the second end of the weft-catching assembly 12 and is used to cut the weft yarns 20 at the edge of the fabric. The yarn-suction mechanism 3 is located at the end of the cutting mechanism 2 away from the loom 10 and is used to collect the weft yarns 20 cut by the cutting mechanism 2. The yarn-pressing mechanism 4 is located in the yarn-suction mechanism 3 and is used to squeeze the weft yarns 20 collected by the yarn-suction mechanism 3.

[0050] In this embodiment, by setting up a waste edge collection device, the weft edge yarn catching and small reed can be eliminated. Since the first end of the weft catching component 12 is set in the receiving groove 111 of the frame structure 11, the weft catching component 12 and the yarn suction mechanism 3 can be set close to the edge of the fabric to shorten the length of the weft yarn 20 (i.e., waste edge yarn) at the edge of the fabric. During the weft beating process, the weft catching component 12 passes through the receiving groove 111 and moves in a direction parallel to the warp yarn 30. After the weft yarn 20 is fed to the second end of the loom 10, the weft catching component 12 can hook the weft yarn 20 to stabilize the feeding of the weft yarn 20, reduce the jumping of the weft yarn 20, and improve the uniformity of the cutting by the shearing mechanism 2. The shearing mechanism 2 cuts the weft yarn 20 at the edge of the fabric, the yarn suction mechanism 3 collects the weft yarn 20 cut by the shearing mechanism 2, and the yarn pressing mechanism 4 can squeeze the weft yarn 20 collected by the yarn suction mechanism 3 at a certain frequency to achieve the collection and compaction of the weft yarn 20, reducing the labor intensity of the operator.

[0051] Among them, such as Figures 2-4 As shown, a receiving groove 111 is provided on the first side of the frame structure 11, and a channel 112 for the weft yarn 20 to pass through is provided on the second side of the frame structure 11. The weft-catching assembly 12 includes a weft-catching drive unit and a weft-catching hook. The first end of the weft-catching hook is disposed in the receiving groove 111. The width of the receiving groove 111 can be set according to the thickness of the weft-catching hook. For example, if the thickness of the weft-catching hook is 2 mm, the width of the receiving groove 111 can be set to 4 mm. The second end of the weft-catching hook is connected to the weft-catching drive unit, which drives the first end of the weft-catching hook to move in the receiving groove 111 in a direction parallel to the warp yarn 30 to stabilize the feeding of the weft yarn 20. The weft-catching drive unit can be, for example, a cylinder, and its specific structure can adopt relevant structures in the prior art, which will not be described in detail here.

[0052] In this embodiment, the loom 10 can be, for example, an air-jet loom, and its structure can adopt relevant structures in the prior art. For example, the air-jet loom 10 mainly includes a warp beam, a weft insertion mechanism, and a weft beat-up mechanism. The warp beam can be used to store the warp yarns 30. The weft insertion mechanism can drive the weft yarns 20 into the shed through the jet airflow. The weft beat-up mechanism pushes the weft yarns 20 towards the shed through the reciprocating motion of the reed seat, so that the weft yarns 20 and the warp yarns 30 are tightly interwoven to form a fabric. The first end of the loom 10 and the second end of the loom 10 can be, for example, a... Figure 1 From left to right, the weft yarn is fed from the first end of the loom 10 to the second end of the loom 10, and the loom 10 weaves the weft yarn 20 and the warp yarn 30 to form a fabric.

[0053] In one embodiment, such as Figure 1 and Figure 5As shown, the shearing mechanism 2 includes a support 21, scissors 22 and a scissors driving unit. The support 21 is disposed at the second end of the loom 10. The scissors 22 is disposed on the support 21 and located above the weft yarn 20. The scissors driving unit is connected to the scissors 22 and is used to drive the scissors 22 to move in the vertical direction and to cut the weft yarn 20 at the edge of the fabric.

[0054] In this embodiment, the bracket 21 supports the scissors 22, and the scissors driving unit drives the scissors 22 to move vertically, causing the scissors 22 to cut the weft yarn 20 at the edge of the fabric. The scissors driving unit can be, for example, a cylinder. The scissors 22 can be positioned 2-4 mm from the edge of the fabric to leave a certain amount of weft yarn for edge locking.

[0055] In one embodiment, such as Figure 1 and Figure 6 As shown, the yarn suction mechanism 3 includes a yarn suction structure 31 and a yarn suction box 32. The first end of the yarn suction structure 31 is located at the end of the weft capturing mechanism 1 away from the fabric and is used to suck up the weft yarn 20 cut by the cutting mechanism 2. The yarn suction box 32 is connected to the second end of the yarn suction structure 31 through a pipe 33 and is used to collect the weft yarn 20 sucked up by the yarn suction structure 31 from the edge of the fabric.

[0056] In this embodiment, the yarn suction structure 31 can use the airflow generated by the compressed air ejected from the nozzle of the jet loom 10 to achieve the function of suctioning and guiding the weft yarn 20. The suctioned weft yarn 20 is collected through the yarn suction box 32.

[0057] The yarn suction structure 31 can be, for example, a trumpet-shaped opening, which can be used to suck up the weft yarn 20 cut by the shearing mechanism 2. Since the first end of the weft-catching component 12 is located in the receiving groove 111, the first end of the trumpet-shaped opening can be positioned close to the fabric to shorten the distance between the fabric and the trumpet-shaped opening, thereby shortening the length of the weft yarn 20 at the edge of the fabric; the cut weft yarn 20 can be directly sucked into the yarn suction box 32 through the trumpet-shaped opening, reducing the amount of weft yarn 20 used and reducing the fabric weaving cost.

[0058] In one embodiment, the cross-sectional area of ​​the yarn suction structure 31 gradually decreases along the direction from the first end of the yarn suction structure 31 to the second end of the yarn suction structure 31.

[0059] In this embodiment, the cross-sectional area of ​​the yarn-absorbing structure 31 gradually decreases from the first end to the second end, which can increase the airflow and improve its suction force on the weft yarn 20. The direction from the first end to the second end of the yarn-absorbing structure 31 can be, for example, [missing information]. Figure 1 The direction from left to right.

[0060] In one embodiment, such as Figure 1 , Figure 6 and Figure 7 As shown, the yarn suction structure 31 includes an upper region 311 and a lower region 312. The upper region 311 is provided with a bent tube 34, which is used to discharge excess gas used for weft insertion and to suck up waste yarn when the weft yarn 20 is replaced. The lower region 312 is used to suck up the weft yarn 20 cut by the shearing mechanism 2.

[0061] In this embodiment, the upper region 311 can be used to store the curved tube 34. During the weft insertion process, by setting the yarn suction structure 31 into upper and lower layers, the upper region 311 can discharge excess gas used for weft insertion and suck up waste yarn during weft yarn 20 replacement through the curved tube 34; the lower region 312 can suck up the weft yarn 20 cut by the shearing mechanism 2. Furthermore, the discharge of excess gas from the upper region 311 can also increase the negative pressure at the bell mouth, thereby increasing the airflow of the lower region 312 onto the weft yarn 20, thus achieving the collection of the cut weft yarn 20.

[0062] In one embodiment, such as Figure 1 and Figure 8 As shown, a material feeding groove 321 is provided on one side of the yarn suction box 32, and a baffle plate 323 is inserted on the material feeding groove 321.

[0063] In this embodiment, by providing a material trough 321 on one side of the yarn suction box 32 and a baffle plate 323 on the material trough 321, the operator can easily remove the yarn collected in the yarn suction box 32. The baffle plate 323 can be made of transparent acrylic plastic to allow the operator to observe the remaining space in the yarn suction box 32.

[0064] In one embodiment, the yarn pressing mechanism 4 includes a yarn pressing plate 41 disposed in the yarn suction box 32 and a driving cylinder 42 connected to the yarn pressing plate 41. The driving cylinder 42 is used to drive the yarn pressing plate 41 to reciprocate between a first position and a second position in the vertical direction to squeeze the weft yarn 20 of the fabric edge in the yarn suction box 32. The first position 40 is higher than the second position 50.

[0065] In this embodiment, the driving cylinder 42 drives the pressing plate 41 to reciprocate between the first position 40 and the second position 50, which can squeeze the collected weft yarn 20 in the yarn suction box 32 to increase the capacity of the yarn suction box 32 for the weft yarn 20.

[0066] In one embodiment, the pressing plate 41 is provided with a plurality of through holes 411.

[0067] In this embodiment, the pressing plate 41 is provided with multiple through holes 411. During the movement of the pressing plate 41, the through holes 411 can be used to discharge air, avoiding air resistance to the pressing plate 41. The pressing plate 41 can be made of metal mesh to improve its durability.

[0068] In one embodiment, the yarn suction box 32 is provided with a connection hole 322, which is connected to the pipe 33; the connection hole 322 is located below the first position.

[0069] In this embodiment, the connecting hole 322 is located below the first position 40, which can prevent the sucked weft yarn 20 from falling onto the pressure plate 41, so that the pressure plate 41 can squeeze the weft yarn 20 in the suction box 32.

[0070] In one embodiment, the yarn pressing mechanism 4 further includes a time relay and a controller, and the controller, the time relay, and the drive cylinder 42 are all electrically connected.

[0071] A time relay is an automatic control element that uses time to control the on / off state of a circuit. It can connect or disconnect the controlled circuit after a set time delay following an input signal (such as voltage or current). In this embodiment, the time relay can be installed inside the wall panel of the loom 10. The operator can adjust the time relay according to the type of fabric being produced, the weft yarn thickness, the loom speed, and the amount of weft yarn in the yarn suction box 32. This controls the interval and frequency of the driving cylinder 42 pressing down, ensuring sufficient space above the yarn suction box 32 to maintain suction power and reduce the operator's workload in pressing the yarn.

[0072] In summary, this application, by setting up a waste edge collection device, can shorten the length of excess weft yarn 20 generated during the weft feeding process, and at the same time eliminate the need for weft edge catching. The cut weft yarn 20 is directly sucked into the suction box 32 by the suction structure 31, reducing the amount of weft yarn 20 used and lowering the weaving cost of the fabric. Through the suction mechanism 3 and the pressing mechanism 4, the cut weft yarn 20 (waste edge yarn) is automatically collected and compacted, reducing the workload of operators in pressing yarn and handling gears, reducing the workload of operators, improving work efficiency, reducing the accumulation of waste edge yarn around the loom 10 and the residue on the ground, improving the on-site environment and increasing the cleanliness of the site.

[0073] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0074] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A waste selvage collection device for a loom, characterized in that, The weft yarn is fed from the first end of the loom to the second end of the loom, causing the weft yarn to weave with the warp yarn to form a fabric; the waste selvage collection device is located at the second end of the loom and on one side of the fabric, and the waste selvage collection device includes: The weft-catching mechanism includes a frame structure and a weft-catching assembly. The frame structure is disposed at the second end of the loom and has a receiving groove. The first end of the weft-catching assembly is disposed in the receiving groove, and the weft-catching assembly moves in a direction parallel to the warp yarn. A shearing mechanism, located at the second end of the weft-catching assembly, is used to cut the weft yarns at the edge of the fabric; A yarn suction mechanism is provided at the end of the shearing mechanism away from the loom, for collecting the weft yarns cut by the shearing mechanism; A yarn pressing mechanism, disposed within the yarn suction mechanism, is used to press the weft yarn collected by the yarn suction mechanism.

2. The waste selvage collection device for a loom according to claim 1, characterized in that, The shearing mechanism includes: A support frame is provided at the second end of the loom; The scissors are mounted on the bracket and positioned above the weft yarn; A scissor driving unit is connected to the scissors and is used to drive the scissors to move in a vertical direction and cut the weft yarn at the edge of the fabric.

3. The waste selvage collection device for a loom according to claim 1, characterized in that, The yarn suction mechanism includes: A yarn suction structure, wherein the first end of the yarn suction structure is located at the end of the weft capture mechanism away from the fabric, and is used to suck up the weft yarn cut by the shearing mechanism; A yarn suction box, which is connected to the second end of the yarn suction structure via a pipe, is used to collect the weft yarns from the edge of the fabric sucked in by the yarn suction structure.

4. The waste selvage collection device for a loom according to claim 3, characterized in that, Along the direction from the first end of the yarn suction structure to the second end of the yarn suction structure, the cross-sectional area of ​​the yarn suction structure gradually decreases.

5. The waste selvage collection device for a loom according to claim 3, characterized in that, The yarn suction structure includes: The upper region is provided with a curved tube, which is used to discharge excess gas used for weft insertion and to draw in waste yarn during weft yarn replacement. The lower region is used to draw in the weft yarn cut by the shearing mechanism.

6. The waste selvage collection device for a loom according to claim 3, characterized in that, A material chute is provided on one side of the yarn suction box, and a baffle plate is inserted into the material chute.

7. The waste selvage collection device for a loom according to claim 3, characterized in that, The yarn pressing mechanism includes: A yarn-pressing plate is installed in the yarn-suction box; A drive cylinder, connected to the yarn pressing plate, is used to drive the yarn pressing plate to reciprocate between a first position and a second position in the vertical direction to squeeze the weft yarn at the edge of the fabric in the yarn suction box, wherein the first position is higher than the second position.

8. The waste selvage collection device for a loom according to claim 7, characterized in that, The pressing plate is provided with multiple through holes.

9. The waste selvage collection device for a loom according to claim 7, characterized in that, The yarn suction box is provided with a connection hole, which is connected to the pipe; The connection hole is located below the first position.

10. The waste selvage collection device for a loom according to claim 7, characterized in that, The yarn pressing mechanism also includes: Time relay; The controller, the time relay, and the drive cylinder are all electrically connected.

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