Novel rapier loom automatic weft feeding device

Abstract

The utility model provides a novel rapier loom automatic weft feeding device which comprises a weft yarn tube back plate, two bobbin installation supports and a weft yarn tube, the two bobbin installation supports are arranged on the two sides of the back face of the weft yarn tube back plate through bolts, and the weft yarn tube is installed between the two bobbin installation supports through a bearing. A static elimination mechanism is mounted at the top end of the weft yarn tube back plate; the static elimination mechanism comprises an arc-shaped connecting rod and a horizontal connecting plate; the static electricity eliminating mechanism comprises an arc-shaped connecting rod and a horizontal connecting plate, a mounting bottom plate is arranged on one side of the bottom end of the horizontal connecting plate to be connected with a static electricity eliminating bar, a weft guiding seat is arranged on one side of the bottom end of the mounting bottom plate, and a perforation channel is formed in the top end of the weft guiding seat and corresponds to the static electricity eliminating bar. In this way, static electricity generated by weft friction can be better eliminated, and the weft feeding quality is ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of rapier looms and relates to a novel automatic weft feeding device for rapier looms. Background Technology

[0002] The rapier loom is the most widely used shuttleless loom. It includes a warp feed mechanism, a weft feed mechanism, a selvage trimming mechanism, and a take-up mechanism. Existing weft feed mechanisms include a weft spool support and a weft feeder. The weft spool is fixedly placed on the support, and the yarn is pulled out from one end of the spool, then enters the weft feeder, winds around the feed drum, and then passes through the feeder into the loom's rapier for weaving.

[0003] For example, the weft feeding mechanism for a rapier loom disclosed in patent publication number CN202717931U includes a weft spool support, guide rollers, pressure rollers, and a guide ring. The weft spool is placed on the weft spool support and can rotate freely. A resistance device is installed at the shaft of the weft spool. The guide rollers and pressure rollers are arranged in parallel. The shaft of the guide rollers is connected to a motor via a coupling. The motor is connected to the control system of the rapier loom via a signal connection. The motor is a servo motor or a stepper motor. The guide ring includes a ceramic guide ring and a support. The center hole of the ceramic guide ring is a smooth, flat hole. This solution can achieve automatic stopping and is suitable for feeding flat weft yarns.

[0004] The disadvantage of the aforementioned weft feeding mechanism is that friction occurs between the weft yarn and the contact surface during the weft yarn feeding process, which easily generates static electricity and affects the quality of the weft yarn. To address this, we have designed a new type of automatic weft feeding device for rapier looms. Summary of the Invention

[0005] The purpose of this invention is to provide a novel automatic weft feeding device for rapier looms to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solution: A novel automatic weft feeding device for a rapier loom includes a weft yarn bobbin back plate, two bobbin mounting brackets, and a weft yarn bobbin. The two bobbin mounting brackets are bolted to both sides of the back of the weft yarn bobbin back plate. The weft yarn bobbin is mounted between the two bobbin mounting brackets via bearings. An electrostatic elimination mechanism is installed at the top of the weft yarn bobbin back plate. The electrostatic elimination mechanism includes an arc-shaped connecting rod and a horizontal connecting plate. The horizontal connecting plate is connected to the top of the weft yarn bobbin back plate via the arc-shaped connecting rod. A mounting base plate is provided on one side of the bottom of the horizontal connecting plate. An electrostatic elimination bar is provided at the bottom of the mounting base plate. A weft yarn guide seat is provided on one side of the bottom of the mounting base plate. A perforation channel is opened at the top of the weft yarn guide seat, and the perforation channel corresponds to the electrostatic elimination bar.

[0007] In the aforementioned novel automatic weft feeding device for rapier looms, the static eliminator bar is a concave-shaped static eliminator seat. A weft yarn recessed channel is provided in the center of the static eliminator seat, and a weft yarn baffle is installed at the top of the weft yarn recessed channel. Weft yarn comb teeth are fixedly installed at the bottom end of the weft yarn baffle. The purpose of this design is to make the static eliminator bar a concave-shaped static eliminator seat, with weft yarn comb teeth installed within its weft yarn recessed channel, facilitating the separate feeding of the weft yarn and reducing weft yarn fuzzing caused by mutual contact and friction between the weft yarns.

[0008] In the aforementioned novel automatic weft feeding device for rapier looms, a sensor support is installed on the other side of the bottom end of the horizontal connecting plate. A contact-type thread tension sensor is installed at the bottom of the sensor support. A weft yarn limiting strip is provided at the bottom contact sensing part of the contact-type thread tension sensor, and a weft yarn guide is opened at the top of the weft yarn limiting strip, corresponding to the bottom contact sensing part of the contact-type thread tension sensor. The purpose of this arrangement is to utilize the contact-type thread tension sensor to measure the thread tension of the weft yarn during the weft feeding process, thereby enabling the adjustment of the thread speed based on the thread tension.

[0009] In the aforementioned novel automatic weft feeding device for rapier looms, a backplate bracket is installed on the front of the weft yarn tube backplate, and a bolt locking plate is installed at the notch of the backplate bracket. A transverse reinforcing rod is provided at one end of the bolt locking plate, and an adhesive seat is provided at the other end of the transverse reinforcing rod. The adhesive seat is bonded to the front of the weft yarn tube backplate. This design facilitates better installation of the weft yarn tube backplate onto the tooling table of the rapier loom, while ensuring good installation stability and firmness of the weft yarn tube backplate.

[0010] In the aforementioned novel automatic weft feeding device for rapier looms, two insertion positioning posts are installed on one side of the top of the weft guide seat, and these two insertion positioning posts are inserted into the bottom edge of the mounting base plate. This arrangement facilitates the connection between the weft guide seat and the mounting base plate.

[0011] Compared with the prior art, the advantages of this novel automatic weft feeding device for rapier looms are as follows: It incorporates an electrostatic elimination mechanism, including an arc-shaped connecting rod and a horizontal connecting plate. A mounting base plate is provided on one side of the bottom of the horizontal connecting plate to connect to the electrostatic elimination bar. A weft guide seat is provided on one side of the bottom of the mounting base plate, with a perforated channel at the top of the weft guide seat corresponding to the electrostatic elimination bar. This effectively eliminates static electricity generated by weft friction, ensuring the quality of weft feeding. Furthermore, the electrostatic elimination bar is designed as a concave electrostatic elimination seat, with weft comb teeth within its weft concave channel, facilitating the separate feeding of the weft yarn and reducing weft fuzzing caused by mutual contact and friction between weft yarns. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the novel automatic weft feeding device for rapier looms.

[0013] Figure 2 This is a three-dimensional structural diagram of the static elimination bar of the automatic weft feeding device for a new type of rapier loom.

[0014] Figure 3 This is a schematic diagram showing the installation position of the contact-type tension sensor in the automatic weft feeding device for a new type of rapier loom.

[0015] Figure 4 This is a three-dimensional structural diagram of the static elimination seat of the automatic weft feeding device for a new type of rapier loom.

[0016] In the diagram: 1. Weft yarn bobbin back plate; 2. Bobbin mounting bracket; 3. Weft yarn bobbin; 4. Back plate bracket; 5. Bolt locking plate; 6. Horizontal reinforcing rod; 7. Adhesive seat; 8. Arc-shaped connecting rod; 9. Horizontal connecting plate; 10. Mounting base plate; 11. Static eliminator bar; 111. Static eliminator seat; 112. Weft yarn baffle; 113. Weft yarn comb teeth; 114. Weft yarn notch channel; 12. Weft yarn guide seat; 13. Perforation channel; 14. Insertion positioning post; 15. Sensor support; 16. Contact type thread tension sensor; 17. Weft yarn limiting strip; 18. Weft yarn routing channel. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model relates to an automatic weft feeding device for a rapier loom;

[0019] Example 1: Includes a weft yarn spool back plate 1, two yarn spool mounting brackets 2 and a weft yarn spool 3. The two yarn spool mounting brackets 2 are bolted to both sides of the back of the weft yarn spool back plate 1. The weft yarn spool 3 is mounted between the two yarn spool mounting brackets 2 through bearings. An electrostatic elimination mechanism is installed at the top of the weft yarn spool back plate 1.

[0020] Among them: such as Figure 2 As shown, the static elimination mechanism includes an arc-shaped connecting rod 8 and a horizontal connecting plate 9. The horizontal connecting plate 9 is connected to the top of the weft yarn tube back plate 1 through the arc-shaped connecting rod 8. A mounting base plate 10 is provided on one side of the bottom end of the horizontal connecting plate 9. A static elimination bar 11 is provided at the bottom end of the mounting base plate 10. A weft guide seat 12 is provided on one side of the bottom end of the mounting base plate 10. A perforation channel 13 is opened at the top end of the weft guide seat 12, and the perforation channel 13 corresponds to the static elimination bar 11.

[0021] To facilitate the installation of the weft guide seat 12, two plug-in positioning posts 14 are installed on one side of the top of the weft guide seat 12, and the two plug-in positioning posts 14 are plugged into the bottom edge of the mounting base plate 10.

[0022] In use, the weft yarn on the weft yarn bobbin 3 is passed through the perforation channel 13 of the weft yarn guide seat 12, so that the weft yarn is located in the static elimination area between the weft yarn guide seat 12 and the static elimination bar 11. The static elimination bar 11 is a conventional static elimination bar structure. After it is energized, it can generate ions to eliminate static electricity, allowing the ions to diffuse to the surface of the object and quickly balance the charge.

[0023] In this design, the shaft of the weft yarn bobbin 3 is connected to the motor (external) via a coupling, and the motor is connected to the control system signal of the rapier loom. A servo motor, a technology already in use, can be used, and will not be described again here.

[0024] Example 2: As a variation of Example 1, such as Figure 4 As shown, the static eliminator bar 11 is a concave static eliminator seat 111. The static eliminator seat 111 has a weft groove channel 114 in the middle. A weft baffle 112 is installed at the top of the weft groove channel 114. Weft comb teeth 113 are fixedly installed at the bottom of the weft baffle 112.

[0025] The weft comb teeth 113 have multiple channels, which facilitates the separate transport of weft threads and reduces the fuzzing caused by mutual contact and friction between weft threads.

[0026] Example 3: Includes a weft yarn spool back plate 1, two yarn spool mounting brackets 2, and a weft yarn spool 3. The two yarn spool mounting brackets 2 are bolted to both sides of the back of the weft yarn spool back plate 1. The weft yarn spool 3 is mounted between the two yarn spool mounting brackets 2 via bearings. An electrostatic elimination mechanism is installed at the top of the weft yarn spool back plate 1. A sensor support 15 is installed on the other side of the bottom of the horizontal connecting plate 9. A contact tension sensor 16 is installed at the bottom of the sensor support 15. A weft yarn limiting strip 17 is provided at the bottom contact sensing part of the contact tension sensor 16. A weft yarn guide 18 is opened at the top of the weft yarn limiting strip 17, and the weft yarn guide 18 corresponds to the bottom contact sensing part of the contact tension sensor 16.

[0027] The advantage of this scheme is that it can use a contact-type thread tension sensor to measure the thread tension of the weft thread during the weft feeding process, and then adjust the thread speed according to the thread tension.

[0028] Example 4: Includes a weft yarn spool back plate 1, two yarn spool mounting brackets 2, and a weft yarn spool 3. The two yarn spool mounting brackets 2 are bolted to both sides of the back of the weft yarn spool back plate 1. The weft yarn spool 3 is mounted between the two yarn spool mounting brackets 2 via bearings. An electrostatic elimination mechanism is installed at the top of the weft yarn spool back plate 1. A back plate bracket 4 is installed on the front of the weft yarn spool back plate 1. A bolt locking plate 5 is installed at the notch of the back plate bracket 4. A transverse reinforcing rod 6 is provided at one end of the bolt locking plate 5. An adhesive seat 7 is provided at one end of the transverse reinforcing rod 6. The adhesive seat 7 is bonded to the front of the weft yarn spool back plate 1.

[0029] The advantage of this solution is that it allows for better installation of the weft yarn cylinder backplate onto the tooling table of the rapier loom, while ensuring good installation stability and firmness of the weft yarn cylinder backplate.

[0030] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A novel automatic weft feeding device for a rapier loom, comprising a weft bobbin back plate (1), two bobbin mounting brackets (2), and a weft bobbin (3), wherein the two bobbin mounting brackets (2) are bolted to both sides of the back of the weft bobbin back plate (1), and the weft bobbin (3) is mounted between the two bobbin mounting brackets (2) via bearings, characterized in that, The top of the weft yarn tube back plate (1) is equipped with an electrostatic elimination mechanism; the electrostatic elimination mechanism includes an arc-shaped connecting rod (8) and a horizontal connecting plate (9). The horizontal connecting plate (9) is connected to the top of the weft yarn tube back plate (1) through the arc-shaped connecting rod (8). A mounting base plate (10) is provided on one side of the bottom end of the horizontal connecting plate (9). An electrostatic elimination bar (11) is provided at the bottom end of the mounting base plate (10). A weft guide seat (12) is provided on one side of the bottom end of the mounting base plate (10). A perforation channel (13) is opened at the top end of the weft guide seat (12). The perforation channel (13) corresponds to the electrostatic elimination bar (11).

2. The novel automatic weft feeding device for rapier looms according to claim 1, characterized in that, The static eliminator bar (11) is a concave static eliminator seat (111). A weft groove channel (114) is provided in the middle of the static eliminator seat (111). A weft baffle (112) is installed at the top of the weft groove channel (114). Weft comb teeth (113) are fixedly provided at the bottom end of the weft baffle (112).

3. The novel automatic weft feeding device for rapier looms according to claim 1, characterized in that, A sensor support (15) is installed on the other side of the bottom of the horizontal connecting plate (9). A contact tension sensor (16) is installed at the bottom of the sensor support (15). A weft limit strip (17) is provided at the bottom contact sensing part of the contact tension sensor (16). A weft thread guide (18) is opened at the top of the weft limit strip (17). The weft thread guide (18) corresponds to the bottom contact sensing part of the contact tension sensor (16).

4. The novel automatic weft feeding device for rapier looms according to claim 1, characterized in that, The back plate bracket (4) is installed on the front of the back plate (1) of the weft yarn tube, and a bolt locking plate (5) is installed at the notch of the back plate bracket (4).

5. The novel automatic weft feeding device for rapier looms according to claim 4, characterized in that, One end of the bolt locking plate (5) is provided with a transverse reinforcing rod (6), and one end of the transverse reinforcing rod (6) is provided with an adhesive seat (7), which is bonded to the front of the weft yarn tube back plate (1).

6. The novel automatic weft feeding device for rapier looms according to claim 1, characterized in that, Two plug-in positioning posts (14) are installed on one side of the top of the latitude guide seat (12), and the two plug-in positioning posts (14) are plugged into the bottom edge of the mounting base plate (10).

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