Weft anti-following mechanism for thick material flat loom

Abstract

The utility model discloses a weft anti-run mechanism for a thick material flat loom, which comprises a weft insertion rapier, the left end and the right end of the stroke of the weft insertion rapier are respectively provided with a set of weft dragging structure used for hooking and dragging weft forwards, and a set of weft hanging structure used for pressing and tensioning the weft is arranged in front of each set of weft dragging structure. The weft dragging crochet hook penetrates through the weft insertion rapier, the first weft can be driven to the weft hanging structure, so that the weft hanging crochet hook presses the first weft, when the second weft runs to the weft hanging structure, the weft hanging crochet hook presses the first weft and the second weft at the same time, and when the third weft runs to the weft hanging structure, the weft dragging crochet hook can drive the third weft to the weft insertion rapier. The weft hanging crochet hook is disengaged from the first weft, the third weft and the second weft are pressed, and weaving is completed circularly in this way; the weft hanging crochet hook alternately moves to replace multi-person cooperative operation, manpower can be saved, products are subjected to industrial CT scanning detection, the organization structure is uniform, the fabric does not have the weft running problem, and the product percent of pass is greatly increased.

Description

Technical Field

[0001] The utility model belongs to the field of special looms, and more specifically relates to a weft thread anti-running mechanism for a thick material flat loom. Background Art

[0002] The heavy-duty flat loom is a special loom that has the basic structure of a traditional fabric loom, but due to the special design and technology, it can meet the production needs of heavy-duty fabrics, such as military fabrics. Heavy-duty fabrics require a very uniform structure, and such fabrics will be scanned and tested by industrial CT during the acceptance process. If one weft position in the fabric is found to be wrong, the entire fabric will be scrapped, resulting in serious losses.

[0003] In the process of producing fabrics on traditional fabric looms, the wefts will be interwoven at every weft, so there is no problem of wefts following each other. However, the difference between thick flat looms and traditional fabric looms is that thick flat looms are needed to produce thick fabrics. Such fabrics require multiple layers of wefts, and the wefts are not beaten after each weft insertion. Therefore, the wefts are currently clamped manually. In addition, such fabrics require a very uniform structure, so it takes many people to weave a plate of fabric and it takes several months to complete. However, in this weaving process, since many people are working together, it will lead to huge labor costs, and the fabric is prone to weft following each other due to human negligence. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model aims to provide a weft thread anti-running mechanism for a thick material flat loom, which can press the weft thread through the alternating movement of the weft hook hook to prevent the weft thread from running.

[0005] In order to achieve the above-mentioned technical objectives and effects, the utility model is implemented through the following technical solutions: a weft thread anti-running mechanism for a thick material flat loom, including a weft insertion rapier for inserting the weft back and forth on the left and right sides of the thick material flat loom, and a set of weft dragging structures for hooking and dragging forward the weft thread inserted into place by the weft insertion rapier are respectively arranged at the left and right ends of the travel of the weft insertion rapier, and a set of weft hanging structures for pressing and tensioning the weft thread dragged into place by the weft dragging structure are arranged in front of each set of weft dragging structures; the weft hanging structure includes two weft hanging hooks for alternately pressing and tensioning the weft thread, and each weft hanging structure is respectively equipped with an independent weft hanging hook drive assembly.

[0006] Furthermore, the two sets of weft hanging structures are respectively arranged on the left and right sides of the thick material flat loom through the same main bracket, and the two sets of weft dragging structures are respectively located on the outsides of their corresponding weft hanging structures.

[0007] Furthermore, the weft hook needle driving assembly includes a weft hook needle bracket fixedly connected to the main bracket, two cylinders are arranged on the top plate of the weft hook needle bracket, a weft hook needle mounting plate is vertically connected to the bottom plate of the weft hook needle bracket, slots are provided on the left and right sides of the weft hook needle mounting plate, and the two slots correspond to the positions of the two cylinders; the two weft hook needles are respectively arranged in the two slots, and each weft hook needle is hinged to the weft hook needle mounting plate in the slot through the corresponding first weft hook needle rotating core shaft, and the bent hook portion of each weft hook needle is aligned with the direction of the weft insertion sword after passing through the corresponding slot, and the connecting rod portion of the weft hook needle is hinged to the telescopic rod of the corresponding cylinder through the corresponding second weft hook needle rotating core shaft after passing through the corresponding slot.

[0008] Furthermore, the length of the slot meets the motion range of the weft hook.

[0009] Furthermore, the weft dragging structure includes a weft dragging slide rail, a slider is slidably connected to the weft dragging slide rail, a weft dragging hook needle mounting plate is fixedly connected to the slider, and a weft dragging hook needle is arranged on the weft dragging hook needle mounting plate.

[0010] Furthermore, the weft-dragging hook needle mounting plate is an "L"-shaped flat plate composed of a long plate and a short plate. The long plate portion of the weft-dragging hook needle mounting plate is fixedly connected to the slider, and the short plate portion of the weft-dragging hook needle mounting plate is arranged toward the direction of the weft-introducing rapier, and the weft-dragging hook needle is located on the short plate of the weft-dragging hook needle mounting plate.

[0011] Furthermore, a rapier guide wheel is provided in the weft insertion rapier for driving the weft to move left and right and to divide the weft into two upper and lower strands.

[0012] Furthermore, a notch is provided on the weft insertion rapier to facilitate the weft dragging hook to hook the lower weft thread in the weft insertion rapier, and the weft dragging hook is matched with the notch.

[0013] Furthermore, the elevation angle position of the weft-dragging hook needle meets the requirement that the weft-dragging hook needle hooks the lower weft thread on the rapier guide wheel at the weft-dragging hooking position.

[0014] Furthermore, two limit switches are provided on the outer side of the weft dragging slide rail, and the travel of the two limit switches meets the weft dragging hook line position and the weft hanging hook line position; a limit stopper is provided between the two limit switches, and the limit stopper is fixedly connected to the slider. Beneficial Effects

[0015] Compared with the prior art, the utility model can drive the first weft thread to the weft hanging structure by passing the weft insertion rapier through the weft dragging hook needle, and then press the first weft thread through the weft hanging hook needle in the weft hanging structure. When the second weft thread runs to the weft hanging structure, the weft hanging hook needle can press the first weft thread and the second weft thread at the same time. When the third weft thread runs to the weft hanging structure, the weft hanging hook needle escapes from the first weft thread and presses the third weft thread and the second weft thread. The weaving is completed in this cycle. Therefore, the utility model can save manpower by replacing the coordinated operation of multiple people with the alternating movement of the weft hanging hook needle. The product has been tested by industrial CT scanning, and the organizational structure is uniform. The fabric does not have the problem of weft thread following, and the product qualification rate is greatly improved.

[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 .

[0020] In the figure: 1. main bracket; 2. weft hook bracket; 21. cylinder; 22. weft hook mounting plate; 23. slot; 24. weft hook needle; 25. first hook rotating mandrel; 26. second hook rotating mandrel; 3. weft dragging hook mounting plate; 31. weft dragging hook; 4. weft insertion rapier; 41. rapier guide wheel; 42. clearance gap; 5. weft dragging slide rail; 51. slider; 52. limit switch; 53. limit block. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0022] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, upper end, lower end, top, bottom...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] See also Figure 1-Figure 2 As shown, a weft thread anti-running mechanism for a thick material flat loom mainly includes a weft insertion rapier 4 for inserting the weft back and forth on the left and right sides of the thick material flat loom, and a set of weft dragging structures for hooking and dragging forward the weft thread inserted into place by the weft insertion rapier 4 are respectively arranged at the left and right ends of the travel of the weft insertion rapier 4, and a set of weft hanging structures for pressing and tensioning the weft thread dragged into place by the weft dragging structure is arranged in front of each set of weft dragging structures.

[0024] The two sets of weft hanging structures are respectively arranged on the left and right sides of the thick material flat loom through the same main bracket 1, and the two sets of weft dragging structures are respectively located on the outsides of their corresponding weft hanging structures.

[0025] The weft hanging structure includes two weft hanging hooks 24 for alternately pressing and tensioning the weft thread, and each weft hanging structure is equipped with an independent weft hanging hook drive assembly, and the weft hanging hook drive assembly includes a weft hanging hook bracket 2 fixedly connected to the main bracket 1, and two cylinders 21 are arranged on the top plate of the weft hanging hook bracket 2, and a weft hanging hook mounting plate 22 is vertically connected to the bottom plate of the weft hanging hook bracket 2, and slots 23 are provided on the left and right sides of the weft hanging hook mounting plate 22, and the length of the slot 23 meets the movement range of the weft hanging hook 24, and the two slots 23 correspond to the positions of the two cylinders 21.

[0026] The two weft hook needles 24 are respectively arranged in the two slots 23, and each weft hook needle 24 is hinged to the weft hook needle mounting plate 22 in the slot 23 through the corresponding first weft hook needle rotating core shaft 25. The hook portion of each weft hook needle 24 passes through the corresponding slot 23 and aligns with the direction of the weft insertion sword rod 4. The connecting rod portion of the weft hook needle 24 passes through the corresponding slot 23 and is hinged to the corresponding telescopic rod of the cylinder 21 through the corresponding second weft hook needle rotating core shaft 26.

[0027] The weft dragging structure includes a weft dragging slide rail 5, on which a slider 51 is slidably connected, and the slider 51 is fixedly connected to a weft dragging hook needle mounting plate 3, on which a weft dragging hook needle 31 is arranged.

[0028] The weft-dragging hook needle mounting plate 3 is an "L"-shaped flat plate composed of a long plate and a short plate. The long plate portion of the weft-dragging hook needle mounting plate 3 is fixedly connected to the slider, and the short plate portion of the weft-dragging hook needle mounting plate 3 is arranged toward the direction of the weft-introducing rapier 4. The weft-dragging hook needle 31 is located on the short plate of the weft-dragging hook needle mounting plate 3.

[0029] A rapier guide wheel 41 is provided inside the weft insertion rapier 4 for driving the weft thread to move left and right and divide the weft thread into two upper and lower strands; a notch 42 is provided on the weft insertion rapier 4 to facilitate the weft dragging hook 31 to hook the lower weft thread located in the weft insertion rapier 4, and the weft dragging hook 31 is matched with the notch 42; the elevation angle of the weft dragging hook 31 satisfies the requirement that the weft dragging hook 31 hooks the lower weft thread on the rapier guide wheel 41 at the weft dragging hook position.

[0030] Two limit switches 52 are provided on the outer side of the weft dragging slide rail 5, and the travel of the two limit switches 52 meets the weft dragging hook line position and the weft hanging hook line position; a limit stopper 53 is provided between the two limit switches 52, and the limit stopper 53 is fixedly connected to the slider 51.

[0031] Preferably, one limit switch 52 is located behind the weft dragging and hooking position, and the other limit switch 52 is located in front of the weft hanging and hooking position.

[0032] The working principle of the utility model is as follows:

[0033] In this embodiment, see Figure 1-Figure 2 As shown, the thick material flat loom is started, and the first weft thread moves toward one side of the loom with the weft insertion rapier 4. When the weft insertion rapier 4 moves to the weft dragging and hooking position on this side, the weft dragging hook needle 31 just corresponds to the position of the clearance gap 42, and the slider 51 drives the weft dragging hook needle 31 to move forward along the weft dragging slide rail 5, thereby driving the first weft thread to move to the weft hanging and hooking position.

[0034] When the first weft thread moves to the weft hooking position, the telescopic rod of one of the cylinders 21 moves upward, so that the corresponding weft hook 24 falls around the first hook rotating core shaft 25 to which it belongs. In the process of falling, the weft hook 24 can hook the first weft thread and press it downward, and make the weft dragging hook 31 separate from the first weft thread, and then return to the initial position along the weft dragging slide rail 5 to wait for the second weft thread. In the process of the weft dragging hook 31 returning to the initial position, the weft insertion sword bar 4 inserts the weft toward the other side of the loom and completes the same weft dragging and hanging task.

[0035] When the weft dragging and hanging on the other side of the loom is completed, the second weft thread follows the weft insertion rapier 4 to move toward one side of the loom. When the weft insertion rapier 4 moves to the weft dragging and hooking position on this side, the weft dragging hook needle 31 corresponds to the position of the clearance gap 42, and the slider 51 drives the weft dragging hook needle 31 to move forward along the weft dragging slide rail 5, thereby driving the second weft thread to move to the weft hanging and hooking position.

[0036] When the second weft thread moves to the weft hooking position, the telescopic rod of another cylinder 21 moves upward, so that the corresponding other weft hook needle 24 will fall around the first hook rotating core shaft 25 to which it belongs. In the process of falling, the weft hook needle 24 can hook the second weft thread and press it downward, and make the weft dragging hook needle 31 separate from the second weft thread, and then return to the initial position along the weft dragging slide rail 5 to wait for the third weft thread. In the process of the weft dragging hook needle 31 returning to the initial position, the weft insertion sword bar 4 inserts the weft toward the other side of the loom and completes the same weft dragging and hanging task.

[0037] At this time, the first weft thread and the second weft thread are respectively hooked by the two weft hook needles 24 and pressed downward, thereby achieving the pressing and tensioning of the first weft thread and the second weft thread.

[0038] When the weft dragging and hanging on the other side of the loom is completed, the third weft thread follows the weft insertion rapier 4 to move toward one side of the loom. When the third weft thread moves to the weft hanging position after dragging, the weft hanging hook 24 pressing the first weft thread is lifted up and disengaged from the first weft thread under the drive of the cylinder 21 to which it belongs, and then falls down under the drive of the cylinder 21 to which it belongs, hooks the third weft thread and presses it downward, so that the weft dragging hook 31 is separated from the third weft thread, and then returns to the initial position along the weft dragging slide rail 5 to wait for the fourth weft thread. In the process of the weft dragging hook 31 returning to the initial position, the weft insertion rapier 4 guides the weft toward the other side of the loom and completes the same weft dragging and hanging task.

[0039] At this time, the first weft thread is separated from the weft hook 24, and the second weft thread and the third weft thread are pressed by the two weft hooks 24 respectively.

[0040] By repeating the alternating cycle, the multiple layers of weft threads can be pressed down and tensioned before beating up to prevent the weft threads from running.

[0041] The utility model can drive the first weft thread to the weft hanging structure by passing the weft insertion rapier 4 through the weft dragging hook 24, and then press the first weft thread through the weft hanging hook 24 in the weft hanging structure. When the second weft thread runs to the weft hanging structure, the weft hanging hook 24 can press the first weft thread and the second weft thread at the same time. When the third weft thread runs to the weft hanging structure, the weft hanging hook 24 escapes from the first weft thread and presses the third weft thread and the second weft thread. The weaving is completed in this cycle. Therefore, the utility model can save manpower by using the alternating movement of the weft hanging hook 24 to replace the coordinated operation of multiple people. In addition, the product has been tested by industrial CT scanning, and the organizational structure is uniform. The fabric does not have the problem of weft thread following, and the product qualification rate is greatly improved.

[0042] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A weft thread anti-running mechanism for a thick material flat loom, characterized in that: The invention comprises a weft insertion rapier (4) for inserting the weft back and forth on the left and right sides of a thick material flat loom, wherein a set of weft dragging structures for hooking and dragging the weft thread inserted by the weft insertion rapier (4) into position are respectively arranged at the left and right ends of the travel of the weft insertion rapier (4), and a set of weft hanging structures for pressing and tensioning the weft thread dragged into position by the weft dragging structures are arranged in front of each set of the weft dragging structures; the weft hanging structures comprise two weft hanging hooks (24) for alternately pressing and tensioning the weft thread, and each of the weft hanging structures is respectively equipped with an independent weft hanging hook drive assembly.

2. The weft thread anti-running mechanism for a thick material flat loom according to claim 1, characterized in that: The two sets of the weft hanging structures are respectively arranged on the left and right sides of the thick material flat loom through the same main support (1), and the two sets of the weft dragging structures are respectively located on the outsides of the corresponding weft hanging structures.

3. The weft thread anti-running mechanism for a thick material flat loom according to claim 2, characterized in that: The weft hook needle drive assembly comprises a weft hook needle bracket (2) fixedly connected to the main bracket (1), two cylinders (21) are arranged on the top plate of the weft hook needle bracket (2), a weft hook needle mounting plate (22) is vertically connected to the bottom plate of the weft hook needle bracket (2), and slots (23) are arranged on the left and right sides of the weft hook needle mounting plate (22), and the two slots (23) correspond to the positions of the two cylinders (21); the two weft hook needles (24) are respectively arranged on the two slots. (23), and each of the weft hook needles (24) is hinged to the weft hook needle mounting plate (22) in the slot (23) through the corresponding first weft hook needle rotating core shaft (25), and the hook portion of each of the weft hook needles (24) passes through the corresponding slot (23) and is aligned with the direction of the weft insertion rapier (4), and the connecting rod portion of the weft hook needle (24) passes through the corresponding slot (23) and is hinged to the corresponding telescopic rod of the cylinder (21) through the corresponding second weft hook needle rotating core shaft (26).

4. The weft thread anti-running mechanism for a thick material flat loom according to claim 3, characterized in that: The length of the slot (23) satisfies the movement range of the weft hook needle (24).

5. The weft thread anti-running mechanism for a thick material flat loom according to claim 1, characterized in that: The weft dragging structure comprises a weft dragging slide rail (5), a slider (51) is slidably connected to the weft dragging slide rail (5), a weft dragging hook needle mounting plate (3) is fixedly connected to the slider (51), and a weft dragging hook needle (31) is arranged on the weft dragging hook needle mounting plate (3).

6. The weft thread anti-running mechanism for a thick material flat loom according to claim 5, characterized in that: The weft-dragging hook needle mounting plate (3) is an "L"-shaped flat plate composed of a long plate and a short plate. The long plate portion of the weft-dragging hook needle mounting plate (3) is fixedly connected to the slider (51), and the short plate portion of the weft-dragging hook needle mounting plate (3) is arranged toward the direction of the weft-introducing rapier (4). The weft-dragging hook needle (31) is located on the short plate of the weft-dragging hook needle mounting plate (3).

7. The weft thread anti-running mechanism for a thick material flat loom according to claim 5, characterized in that: The weft insertion rapier (4) is provided with a rapier guide wheel (41) for driving the weft to move left and right and to separate the weft into two upper and lower strands.

8. The weft thread anti-running mechanism for a thick material flat loom according to claim 5, characterized in that: The weft insertion rapier (4) is provided with a clearance notch (42) for facilitating the weft dragging hook needle (31) to hook the lower weft thread in the weft insertion rapier (4), and the weft dragging hook needle (31) is matched with the clearance notch (42).

9. The weft thread anti-running mechanism for a thick material flat loom according to claim 7, characterized in that: The elevation angle position of the weft dragging hook needle (31) satisfies the requirement that the weft dragging hook needle (31) hooks the lower weft thread on the rapier guide wheel (41) at the weft dragging hooking position.

10. The weft thread anti-running mechanism for a thick material flat loom according to claim 5, characterized in that: Two limit switches (52) are arranged on the outer side of the weft dragging slide rail (5), and the travels of the two limit switches (52) meet the weft dragging line hooking position and the weft hanging line hooking position; a limit stopper (53) is arranged between the two limit switches (52), and the limit stopper (53) is fixedly connected to the slider (51).

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