A rapier head for a single rapier loom

Abstract

The utility model discloses a single rapier head of rapier loom, including sword shell, be equipped with the pressure lever in the sword shell, the middle part of pressure lever and sword shell pivot joint, the head of pressure lever is equipped with the upper yarn clamping tooth that goes down, corresponding sword shell bottom is equipped with the lower yarn clamping tooth that goes up, be equipped with the spring between the tail of pressure lever and sword shell, the spring support pressure lever tail portion makes the occlusion of upper yarn clamping tooth and lower yarn clamping tooth. The utility model discloses simple structure, can reliably hold weft through the cooperation of upper yarn clamping tooth and lower yarn clamping tooth, realizes the weft insertion of plastic or carbon fiber material quality wide flat weft, adopts the loom of the utility model's rapier head, and the weft insertion quality is high, and production is stable, thereby improves production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rapier loom technology, and in particular to a rapier head for a single rapier loom. Background Technology

[0002] A rapier loom is a shuttleless loom that uses rapiers to insert the weft. Rapier looms are classified into single-rapier looms and double-rapier looms based on the configuration of the rapiers. A single-rapier loom has a rapier and its rapier-transfer mechanism on one side of the loom. During weft insertion, the empty rapier reaches the other side, grasps the weft yarn, and pulls the weft yarn into the shed during the retraction process, thus completing the weft insertion. Currently, there are wide, flat plastic or carbon fiber yarns. In actual production, there are no suitable rapier heads available on the market to match and apply to these special yarns, or the weft insertion is unstable, resulting in problems such as frequent yarn drops and slow machine operation. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a rapier head for a single-rapier loom.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a rapier head for a single rapier loom, comprising a rapier shell, a pressure rod provided inside the rapier shell, the middle part of the pressure rod being pivotally connected to the rapier shell, the head of the pressure rod being provided with downward-facing upper yarn-clamping teeth, the corresponding bottom of the rapier shell being provided with upward-facing lower yarn-clamping teeth, a spring being provided between the tail of the pressure rod and the rapier shell, the spring supporting the tail of the pressure rod to make the upper and lower yarn-clamping teeth engage.

[0005] It also includes a yarn clamping head, wherein the upper yarn clamping teeth are disposed on the yarn clamping head, and the yarn clamping head is rotatably connected to the pressure rod.

[0006] The head of the pressure rod is provided with a notched ring, and the yarn clamping head is provided with a second rotating shaft that cooperates with the notched ring. The second rotating shaft is inserted into the notched ring.

[0007] It also includes a yarn clamping head, the upper yarn clamping teeth are set on the yarn clamping head, the head of the pressure rod is provided with a notched ring, and the yarn clamping head is provided with a second rotating shaft that cooperates with the notched ring, the second rotating shaft is inserted into the notched ring.

[0008] It also includes a yarn clamping piece, the lower yarn clamping teeth are disposed on the yarn clamping piece, and the front part of the sword shell is provided with a groove, the yarn clamping piece being embedded in the groove.

[0009] The bottom surface of the sword shell is provided with a base plate.

[0010] The sword shell has a tail plate at its tail end.

[0011] The beneficial effects of this utility model are as follows: This utility model has a simple structure. The upper and lower yarn clamping teeth can reliably clamp the weft yarn, realizing the weft insertion of wide and flat weft yarns made of materials such as plastic or carbon fiber. Looms using the rapier head of this utility model have high weft insertion quality and stable production, thereby improving production efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the present invention;

[0014] Figure 3 This is a top view of the present invention;

[0015] Figure 4 This is an exploded view of the present invention;

[0016] Figure 5 The weft insertion state of this utility model Figure 1 ;

[0017] Figure 6 The weft insertion state of this utility model Figure 2 ;

[0018] Figure 7 This is a diagram showing the de-lamination state of this utility model. Detailed Implementation

[0019] like Figures 1-7 As shown, a rapier head for a single rapier loom includes a rapier housing 1. A pressure rod 4 is provided inside the rapier housing 1. The middle part of the pressure rod 4 is pivotally connected to the rapier housing 1. The head of the pressure rod 4 is provided with downward-facing upper yarn clamping teeth, and the bottom of the corresponding rapier housing 1 is provided with upward-facing lower yarn clamping teeth. A spring 6 is provided between the tail of the pressure rod 4 and the rapier housing 1. The spring 6 supports the tail of the pressure rod 4 so that the upper and lower yarn clamping teeth engage.

[0020] The pressure rod 4 has side plates 41 on both sides, and the side plates 41 have first through holes 42. The first through holes 42 are fitted with bushings 43, and the bushings 43 are inserted into the first rotating shaft 44. The first rotating shaft 44 is connected to the sword shell 1 by screws 45.

[0021] It also includes a yarn clamping head 2, on which the upper yarn clamping teeth are disposed, and the yarn clamping head 2 is rotatably connected to the pressure rod 4. The pressure rod 4 has a notched ring 46 at its head, and the yarn clamping head 2 has a second rotating shaft 21 that cooperates with the notched ring 46, the second rotating shaft 21 being inserted into the notched ring 46. Through the above connection structure, the yarn clamping head 2 can rotate relative to the pressure rod 4, and has a certain self-adjusting performance when clamping weft yarns of different thicknesses, better cooperating with the lower yarn clamping teeth, thereby ensuring the quality of weft clamping.

[0022] It also includes a yarn clamping piece 3, on which the lower yarn clamping teeth are disposed. The front part of the sword shell 1 is provided with a groove 11, and the yarn clamping piece 3 is embedded in the groove 11. The yarn clamping piece 3 can be fixedly connected to the sword shell 1 by welding, bonding, screws 45, etc.

[0023] The bottom surface of the sword shell 1 is provided with a base plate 5. The base plate 5 cooperates with the guide rail of the machine tool when the sword head moves, and plays a guiding and positioning role.

[0024] The rapier 1 is provided with a tail piece 12 at its tail end. During the weft insertion process, the tail piece 12 can prevent the rapier head from snagging the warp yarn.

[0025] like Figure 5 , 6 As shown, during weft insertion, the rapier head moves forward. At the weft insertion position, the machine is equipped with a weft insertion opening device 7, which includes a weft insertion pressure block 71 with chamfered front and rear. The rear part of the pressure rod 4 is higher than the head of the pressure rod 4, while the bottom surface of the weft insertion pressure block 71 is higher than the head of the pressure rod 4 but lower than the tail of the pressure rod 4, allowing the head of the pressure rod 4 to pass directly through. When the tail of the pressure rod 4 passes the weft insertion pressure block 71, it touches the weft insertion pressure block 71, causing the tail of the pressure rod 4 to move downward under pressure, opening the head of the pressure rod 4 upward and separating the upper and lower yarn clamping teeth. At this time, the weft feed rapier feeds the weft yarn into the yarn clamping opening. Then, the rapier head moves backward, the tail of the pressure rod 4 disengages from the weft insertion opening device 7, and the tail of the pressure rod 4 moves upward under the action of the spring 6, causing the head of the pressure rod 4 to move downward, restoring the upper and lower yarn clamping teeth to their meshing state, thereby clamping the weft yarn. Next, the rapier head clamps the weft thread and moves backward. At the weft-off position, the machine is equipped with a weft-off opening device 8 (such as...). Figure 7 As shown), the weft unwinding device 8 includes a weft unwinding pressure block 81 with a front chamfer. When the rapier head reaches the weft unwinding position, the tail of the pressure rod 4 touches the weft unwinding pressure block 81. The tail of the pressure rod 4 is pressed downward, causing the head of the pressure rod 4 to open upward, separating the upper and lower yarn clamping teeth, and allowing the weft yarn to disengage from the yarn clamping opening.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Simple modifications and substitutions made by those skilled in the art without departing from the spirit and scope of this utility model are within its protection scope.

Claims

1. A rapier head for a single-rapier loom, comprising a rapier shell, characterized in that, The sword shell is provided with a pressure rod, the middle part of which is pivotally connected to the sword shell. The head of the pressure rod is provided with an upper yarn clamping tooth facing downwards, and the bottom of the corresponding sword shell is provided with a lower yarn clamping tooth facing upwards. A spring is provided between the tail of the pressure rod and the sword shell, and the spring supports the tail of the pressure rod so that the upper and lower yarn clamping teeth engage.

2. The rapier head of a single-rapier loom as described in claim 1, characterized in that, The pressure rod has side plates on both sides, and the side plates have first through holes. A bushing is tightly fitted in the first through hole, and a first rotating shaft is inserted into the bushing. The first rotating shaft is connected to the sword shell by screws.

3. The rapier head of a single-rapier loom as described in claim 1, characterized in that, It also includes a yarn clamping head, wherein the upper yarn clamping teeth are disposed on the yarn clamping head, and the yarn clamping head is rotatably connected to the pressure rod.

4. The rapier head of a single-rapier loom as described in claim 3, characterized in that, The head of the pressure rod is provided with a notched ring, and the yarn clamping head is provided with a second rotating shaft that cooperates with the notched ring. The second rotating shaft is inserted into the notched ring.

5. The rapier head of a single rapier loom as described in claim 1, characterized in that, It also includes a yarn clamping piece, the lower yarn clamping teeth are disposed on the yarn clamping piece, and the front part of the sword shell is provided with a groove, the yarn clamping piece being embedded in the groove.

6. The rapier head of a single rapier loom as described in claim 1, characterized in that, The bottom surface of the sword shell is provided with a base plate.

7. The rapier head of a single rapier loom as described in claim 1, characterized in that, The sword shell has a tail plate at its tail end.

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