WO2020056899A1 - Weft yarn tension control apparatus for rapier loom - Google Patents

Abstract

Disclosed is a weft yarn tension control apparatus for a rapier loom. The control apparatus comprises an installation base (1), wherein a yarn pressing plate spring fixing seat (11) is provided at a right end thereof; an upper part of the yarn pressing plate spring fixing seat (11) is provided with a weft yarn leading out porcelain circle hole (111); a weft yarn leading out porcelain circle (1111) is arranged in the weft yarn leading out porcelain circle hole (111); a weft yarn supporting mechanism (2) is arranged at a middle part of a side, facing upwards, of the installation base (1); an electromagnet (3) is fixed to a side, facing downwards, of a left end of the installation base (1); and a deflector plate reset mechanism (4) is arranged at the left end of the installation base (1). A left end of a yarn pressing plate spring (5) is connected to a top part of a deflector plate (6), a middle part thereof corresponds to an upward side of the weft yarn supporting mechanism (2), and a right end thereof is connected to a top part of the yarn pressing plate spring fixing seat (11). The deflector plate (6) is connected to the deflector plate reset mechanism (4), an upper end of the deflector plate (6) is provided with a weft yarn leading in porcelain ring hole (61), a weft yarn leading in porcelain ring (611) is arranged in the weft yarn leading in porcelain ring hole (61), and a lower end of the deflector plate (6) extends in a direction facing the electromagnet (3). The invention has the following advantages of movement transfer links being reduced, the structure being simplified, and a response speed being improved when a weft yarn tension is adjusted, therefore meeting the high-speed-weaving requirement of a loom, and improving the adaptability to different weft yarns.

Description

Weft tension control device for rapier loom Technical field

The invention belongs to the technical field of auxiliary facilities of shuttleless loom, and particularly relates to a weft tension control device for a rapier loom.

Background technique

During the operation of the rapier loom, the path of the weft is: the yarn is unwound from the bobbin, reaches the weft storage, and then enters the weft detector through the tensioner (that is, the tension control device), and then enters the loom, and the weft warp After the tensioner is applied a certain static initial tension, the static initial tension is constant and is very important for normal weft insertion.

During the weft insertion of the sword head, the actual tension of the weft is the superposition of the dynamic tension and the static initial tension. During the weft insertion of delicate wefts such as fine single yarn, fine denier filament, cashmere yarn, and silk, due to the weakness The strength of the weft yarn is low, so excessive peak tension of the weft yarn will cause yarn breakage (ie, weft breakage), so the weft yarn tension needs to be reduced to ensure the normal weaving of the loom.

The current treatment method for the above-mentioned delicate weft yarns in weaving is to reduce the speed of the loom. Although this method can effectively reduce the probability of weft breakage, because reducing the speed of the weaving machine will affect the production capacity, it is a negative gain.

Another situation in the prior art is: during the weft insertion process of heavy weft yarns such as thick yarns, finely counted glass fiber composite yarns, and coarsely-counted basalt composite yarns, the sword head and sword belt are stationary at the end of the weft insertion process. The weft yarn will continue to move outside the cloth edge along the original direction of movement under the effect of flying inertia force. After the weft yarn is released by the weft sword, the tail section of the weft yarn remaining outside the cloth edge is longer, causing waste of weft raw material and unit mass of weft yarn The larger or the higher the loom speed, the faster the corresponding weft insertion speed, so the weft yarn inertia at the end of weft insertion is also greater, the longer the weft yarn tail section left outside the cloth edge, the more serious weft yarn waste.

At present, the disposal methods of the above heavy weft yarns in the weaving process mainly include the following three aspects: one is to make the weft sword release the weft yarns in advance, but the practice has proved that the advance amount is limited. For heavy weft yarns, the effect is better than nothing; the second is to reduce The speed of the loom, but as mentioned above will sacrifice the output per unit time; the third is to apply sufficient static initial tension to the weft through the tensioner to offset a part of the inertial force of the weft, and the greater the mass of the weft, the greater the static initial force applied. The tension is also greater, so excessive static weft tension is not conducive to normal weft insertion, and there is a risk of damaging the sword belt, such as accelerating the wear of the sword belt.

From the above description, it can be known that it is of positive significance to design a weft tension control device that can not only meet the required tension of the weak weft but also the reasonable tension required by the heavy weft.

The technical information of the weft tension control device can be seen in the published Chinese patent documents, such as CN2628555Y (belt web weft tension control device), CN10163249A (loom yarn tension control device), CN105803646B (a kind of weft tension controller Loom shuttle) and CN207210647U (automatic weft tension control device), etc., because these patent solutions are not limited to the exemplified patent solutions and do not belong to the real sense of the weft tension control device of the shuttleless loom, so for shuttleless weaving The rapier loom, shuttle shuttle loom, air jet loom, and water jet loom in the machine category have no technical significance.

Document A) that CN202755167U recommends "weft tension control device for air-jet loom" and document B) that CN205821622U provides "a high-speed air-jet loom tension control system", these two patents belong to shuttleless loom The scope of the auxiliary facilities, and objectively can achieve their technical effects recorded in the technical effects column of the description.

The aforesaid document A) adjusts the tension of the weft yarn by changing the gap between the inertia wheel and the friction wheel to change the friction force experienced by the weft yarn passing between the inertia wheel and the friction wheel. For details, please refer to the description of the patent Paragraph 0033. The above document B) adjusts the tension of the weft yarn passing between the fixed chuck and the movable chuck through the cooperation of the roller and the fixed chuck provided at the end of the movable chuck. For details, refer to paragraph 0021 of the specification of the patent.

The above documents A) and B) have the following disadvantages: first, because the motor is used as power, there are many action transmission links, not only large power loss, but also complicated structure; second, because both use screw drive, so one On the one hand, the response speed is slow, on the other hand, the precision of the tension is not conducive to the tension due to the pitch of the lead screw. Third, the tension on the weft is tangent to the weft by the wheel (document A is the friction wheel and document B is the roller) It is realized by the contact method, and thus appears as point contact. It is impossible to make the weft yarn pass through the weft yarn detector and enter the loom in a stable tension state by the line contact method.

In view of the above-mentioned existing technology, it is necessary to improve it. For this reason, the applicant has made a positive and beneficial design. Finally, the technical scheme to be described below has been formed and the test has been carried out in the applicant's test center with security measures taken. The results proved to be feasible.

Summary of the Invention

The object of the present invention is to provide a motor that is used as a power to significantly reduce the action transmission link and reduce the power consumption and simplify the structure. It is helpful to improve the response speed when adjusting the weft tension and improve the precision control of the weft tension. By adapting to the high-speed weaving requirements of the loom, it is beneficial to change the way of contact with the weft yarn, so that the weft yarn enters the weaving machine while maintaining translational tension, and it is convenient to adjust the tension of the weft yarn according to different materials and different counts on demand The weft tension control device for rapier loom is used to increase the adaptability to the weft.

The task of the present invention is accomplished in this way. A weft tension control device for a rapier loom includes a mounting base, which is mounted on the rapier loom in a use state, and is fixed at the right end of the mounting base. There is a pressed yarn spring plate fixing seat, and a weft yarn exporting porcelain circle hole is opened on the upper part of the pressing yarn spring plate fixing seat. A weft yarn exporting porcelain circle is embedded in the weft yarn exporting porcelain circle hole; a weft yarn holding mechanism, the weft yarn The holding mechanism is arranged vertically in the middle of the upwardly facing side of the mounting base and corresponds to the left side of the crimping spring piece fixing base; an electromagnet, the electromagnet and the left end of the mounting base facing downward One side of the electromagnet is fixed, and the armature of the electromagnet is located to the left of the electromagnet; a deflection plate reset mechanism is provided at the left end of the mounting base at a position corresponding to the above of the electromagnet; The yarn pressing spring sheet and a deflection plate, the left end of the yarn pressing spring sheet is connected to the top of the deflection plate, the middle part of the yarn pressing spring sheet corresponds to the top of the weft holding mechanism, and the right end of the yarn pressing spring sheet is connected with The top of the yarn pressure spring plate fixing seat is connected, and the deflection plate is connected with the deflection plate reset mechanism at a position corresponding to the left end of the mounting seat. A weft yarn introduction porcelain ring hole is opened at the upper end of the deflection plate. A weft-introducing porcelain ring hole is provided in the weft-introducing porcelain ring hole, and the lower end of the deflection plate extends toward the electromagnet and corresponds to the left side of the armature.

In a specific embodiment of the present invention, an electromagnet fixing plate base is fixed on the mounting base and located on the rear side of the mounting base by an electromagnet fixing plate base screw, and the electromagnet fixing plate base has a downwardly extending An electromagnet fixing plate corresponding to the right rear of the electromagnet and the electromagnet is fixed to the electromagnet fixing plate.

In another specific embodiment of the present invention, the weft holding mechanism includes a weft holding plate screw head fixing seat, a weft left holding plate and a weft right holding plate, and the weft holding plate screw head is fixed. The seat is fixed to the middle of the upwardly facing side of the mounting seat through a screw head fixing seat screw of the weft yarn holding plate and corresponds to the left side of the pressing spring sheet fixing seat, and the side of the left yarn holding plate facing downward The center position of the weft left holding plate screw head is formed with the left end of the weft holding plate screw head and the left end of the weft holding plate screw head fixing seat and is screwed on the end of the left end of the weft left holding plate screw head. The locking nut Ⅰ locks, and a weft yarn right holding plate screw head is formed at the center position of the side of the weft yarn right holding plate facing downward. The weft yarn right holding plate screw head is connected to the right end of the weft yarn holding plate screw head fixing seat and It is locked by a screw head lock nut Ⅱ screwed on the end of the screw head of the right weft holding plate, and the middle side of the presser spring plate faces downward at the same time as the left holding plate of the weft and the right holding plate of the weft. up Attached to a side surface of the contact.

In another specific embodiment of the present invention, a pair of right-pressing spring holes is provided on the top of the pressing-spring spring fixing seat, and a pair of left-pressing springs is provided on the top of the deflection plate. A screw hole is connected, an elastic piece is provided on the left side of the compression spring sheet facing upward, and a pressing plate is provided on the right side of the compression spring sheet facing upward, and the left end corresponding to the elastic sheet is directed upward One side is provided with an elastic sheet pressure plate, and a pair of elastic sheet pressure plate fixing screws are arranged on the elastic sheet pressure plate. The pair of elastic sheet pressure plate fixing screws are sequentially passed through the spring sheet and the yarn pressing spring sheet and screwed into the pair of pressure sheets. In the left connecting screw hole of the yarn spring piece, the right end of the elastic piece is configured as a free end and is forced on the pressure spring piece. A compression plate pad is provided between the right end of the compression plate and the right end of the yarn spring piece. A pair of compression plate fixing screws are arranged above the right end of the compression plate, and the pair of compression plate fixing screws pass through the compression plate pad plate and the compression spring plate in turn and are screwed into the pair of compression spring plates. In the screw hole, the left end of the compression plate is configured as a free end and is forced on the compression spring sheet.

In another specific embodiment of the present invention, the surface of the weft yarn left holding plate facing upward and the surface of the weft right holding plate facing upward are both configured as arched surfaces.

In still another specific embodiment of the present invention, a deflector shaft seat cavity is formed at the right end of the mounting seat, and the cavity opening of the deflection board shaft seat is facing left, on the front side of the left end of the mounting seat and at a corresponding position. A torsion spring adjustment seat shaft head hole is provided at the position of the deflection plate shaft seat cavity. The torsion spring adjustment seat shaft head hole communicates with the deflection plate shaft seat cavity, at the rear side of the left end of the mounting seat and at a position corresponding to the torsion spring adjustment seat shaft. A central shaft support hole is provided at the center of the head hole, and the central shaft support hole is also communicated with the deflection plate shaft seat cavity. The deflection plate reset mechanism is installed at a position corresponding to the head hole of the torsion spring adjustment seat. The left end of the seat is supported on the center shaft support hole, and a deflection plate shaft seat is formed on the right side of the deflection plate and at a position corresponding to the deflection plate shaft seat cavity. The deflection plate shaft seat is on the deflection plate shaft seat. The cavity is connected to the deflection plate reset mechanism, the deflection plate is made of a magnetically conductive material, and a gap is formed between the deflection plate and the electromagnet. When the armature draws the deflection plate, the gap Disappear while Releasing deflector energisation of the gap recovery.

In a more specific embodiment of the present invention, the deflecting plate shaft seat has a deflecting plate shaft seat cavity, and the deflecting plate shaft seat cavity mouth of the deflecting plate shaft seat faces forward and is connected with the twist Corresponding to the head hole of the spring adjusting seat, a center shaft giving hole is provided at the center of the cavity bottom wall of the deflection plate shaft seat cavity, and a deflection plate shaft seat is also fixed at a position on the side of the off center hole giving hole. Cavity bottom wall torsion spring foot penetration hole, the central shaft yield hole corresponding to the central shaft support hole, on the left end face of the mounting base and at the shaft head hole corresponding to the torsion spring adjustment base A position of a shaft head locking screw seat is formed at a position of the shaft head. The shaft head locking screw seat cavity of the shaft head locking screw seat is in communication with the torsion spring adjustment seat shaft head hole, and a shaft head is screwed in the shaft head locking screw seat cavity. Locking screw; the deflection plate reset mechanism includes a torsion spring adjustment base, a deflection plate central shaft and a torsion spring, and a rear end of the torsion spring adjustment base forms a torsion spring adjustment base shaft head, and the torsion spring adjustment base shaft head It is matched with the hole of the head of the torsion spring adjusting seat and is composed of The shaft head locking screw is locked, and a deflection plate central shaft fixing hole is provided at the axial center position of the torsion spring adjusting seat. A hexagonal wrench adjustment hole is formed at a position corresponding to the front of the deflection plate central shaft fixing hole. The seat also has a torsion spring foot positioning hole, the front end of the central axis of the deflection plate is fixed to the torsion spring adjustment seat at a position corresponding to the central hole of the deflection plate, and the rear end of the central axis of the deflection plate passes through the center. A shaft yielding hole is supported on the central shaft support hole, a middle portion of the central axis of the deflection plate corresponds to the cavity of the deflection plate shaft and a sleeve is sleeved, and a torsion spring is sleeved on the sleeve. The torsion spring The first torsion spring foot is inserted into the torsion spring foot positioning hole, and the second torsion spring foot of the torsion spring is inserted into the torsion spring foot of the bottom wall of the deflection plate shaft seat fixing cavity into the hole.

In a further specific embodiment of the present invention, the gap is 0.3-0.6 mm.

In yet another specific embodiment of the present invention, the lower end of the yarn pressing spring piece fixing seat is fixed to the right end end face of the mounting seat by the yarn pressing spring piece fixing seat screw, and is corresponding to the yarn pressing spring piece. A fixed frame is added to each of the front side and the rear side of the fixed base, and the fixed frames located on the front side and the rear side of the crimping spring sheet fixed base are connected to each other by positioning pins and positioning screws.

In yet another specific embodiment of the present invention, a mounting rod is fixed at the left end of the mounting base by a mounting rod fixing screw, and the mounting rod is located below the mounting base and is in contact with the rapier loom in a used state. fixed.

One of the technical effects of the technical solution provided by the present invention is that because an electromagnet is used, the deflection plate is attracted or released by the magnet, and the pressing plate spring plate is pressed or released from the bias plate plate, so there is less action transmission. Not only reduces the power loss, but also simplifies the structure. Second, because the electromagnet is used, it is helpful to improve the response speed when adjusting the weft tension. Third, because the position of the electromagnet can be adjusted to change the deflection plate and the electromagnetic The gap between the irons further changes the deflection angle of the deflection plate, so that the precision control of the weft tension can be realized to meet the high-speed weaving requirements of the loom. Fourth, due to the use of the compression spring plate and the weft holding mechanism, Therefore, the weft yarn located between the pressing spring sheet and the weft yarn holding mechanism can enter the loom while maintaining translational tension. Fifth, because the gap between the deflection plate and the electromagnet can be changed as required, the The degree of deflection can be changed as required to meet the flexible adjustment requirements of the weft tension of different materials and different counts, and improve the adaptability to different weft yarns.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural diagram of an embodiment of the present invention.

FIG. 2 is a schematic front view of FIG. 1.

Fig. 3 is a sectional view taken along A-A in Fig. 2.

detailed description

In order to understand the technical essence and beneficial effects of the present invention more clearly, the applicants will use the following examples to explain in detail, but the description of the embodiments is not a limitation on the solutions of the present invention. Equivalent transformations that are merely formal but not substantial should be considered as the scope of the technical solution of the present invention.

In the following description, the concepts of directivity or azimuth related to up, down, left, right, front, and back are all directed to the position state of FIG. 1, so it cannot be understood as providing the present invention. The technical solution is particularly limited.

1 and 2, a mounting base 1 is shown. The mounting base 1 is mounted on a rapier loom in a used state, and a crimping spring plate fixing base 11 is fixed at the right end of the mounting base 1. A weft-exporting ceramic ring hole 111 is provided in the upper part of the pressing spring plate fixing seat 11, and a weft-exporting ceramic ring 1111 is embedded in the weft-exporting ceramic ring hole 111; a weft-supporting mechanism 2 is shown, and the weft-supporting The mechanism 2 is arranged vertically in the middle of the upward-facing side of the mounting base 1 and corresponds to the left side of the crimping spring plate fixing base 11; an electromagnet 3 is shown, and the electromagnet 3 and the mounting base 1 are shown The left end of the electromagnet 3 is fixed to the lower side, and the armature 31 of the electromagnet 3 is located to the left of the electromagnet 3. According to professional common sense, in the use state, the electromagnet 3 is electrically connected to the electrical controller of the rapier loom. As shown in FIG. 2, an adjustment groove 331 is provided on the electromagnet fixing ear 33 of the electromagnet 3, and the position of the electromagnet 3 can be adjusted as needed through the adjustment groove 331; a deflection plate reset mechanism 4 is shown, and the deflection The plate reset mechanism 4 is on the top corresponding to the aforementioned electromagnet 3 Is located at the left end of the aforementioned mounting base 1; a yarn pressing spring piece 5 and a deflection plate 6 are shown, the left end of the yarn pressing spring piece 5 is connected to the top of the deflection plate 6, and the middle portion of the yarn pressing spring piece 5 corresponds to The right end of the yarn pressing spring piece 5 is connected to the top of the yarn pressing spring piece fixing seat 11 above the weft yarn holding mechanism 2, and the deflection plate 6 is in a position corresponding to the left end of the mounting seat 1 and the deflection plate reset mechanism. At the upper end of the deflection plate 6, a weft yarn introduction porcelain ring hole 61 is opened. A weft yarn introduction porcelain ring 611 is provided in the weft yarn introduction porcelain ring hole 61. The lower end of the deflection plate 6 extends in the direction of the aforementioned electromagnet 3. It also corresponds to the left side of the aforementioned armature 31.

An electromagnet fixing plate base 12 is fixed on the aforementioned mounting base 1 and located on the rear side of the mounting base 1 by means of an electromagnet fixing plate base screw 121. The electromagnet fixing plate base 12 has an electromagnet fixing plate 122 extending downward. The electromagnet fixing plate 122 corresponds to the right rear of the aforementioned electromagnet 3 and the electromagnet 3 is fixed to the electromagnet fixing plate 122 by an electromagnet fixing screw 32. Specifically, the electromagnet fixing screw 32 corresponds to the aforementioned adjustment groove 331. The position fixes the electromagnet fixing ear 331 and the electromagnet fixing plate 122.

With continued reference to Figures 1 and 2, the aforementioned weft holding mechanism 2 includes a weft holding plate screw head fixing seat 21, a weft left holding plate 22, a weft right holding plate 23, and a weft holding plate screw head fixing seat. 21 is fixed to the middle of the upward facing side of the mounting base 1 by the weft holding plate screw head fixing seat screw 211 and corresponds to the left side of the aforementioned pressing spring plate fixing base 11 with the left weft holding plate 22 facing downward On one side, a weft left holding plate screw head 221 is formed (that is, fixed). The weft left holding plate screw head 221 is connected to the left end of the weft holding plate screw head fixing seat 21 and is spun on the weft. The screw head lock nut I2211 of the end of the left holding plate screw head 221 is locked, and a weft right holding plate screw head 231 is formed (that is, fixed) at the center position of the weft right holding plate 23 facing downward. The weft right holding plate screw head 231 is connected to the right end of the weft holding plate screw head fixing seat 21 and locked by a screw head lock nut II2311 screwed to the end of the weft right holding plate screw head 231. With the middle facing down and the front Weft yarn left the holding plate 22 and the holding surface of the right side of the weft yarn on the contact plate 23 toward the paste. When the weft yarn 7 shown in the figure passes through the upper surfaces of the weft yarn left holding plate 22 and the weft right holding plate 23, the middle portion of the presser spring plate 5 faces downward and contacts the weft yarn 7.

By adjusting the weft left holding plate screw head 221 and the weft right holding plate screw head 231, the heights of the left weft holding plate 22 and the right weft holding plate 23 can be changed (lifted or lowered), thereby changing the pressing spring plate 5 Hold down the tightness of the weft yarn 7 to adjust the static initial tension of different weft yarns 7. In addition, the magnitude of the initial static tension applied to the weft yarn 7 can also be obtained by changing the thickness of the yarn pressing spring sheet 5.

As shown in FIG. 1, a pair of right-pressing spring leaf right connection screw holes 112 are opened on the top of the aforementioned pressure-spring spring piece fixing base 11, and a pair of left-attaching screw holes 62 of pressure spring leaf are opened on the top of the deflection plate 6. An elastic piece 51 is provided on the left side of the compression spring sheet 5 facing upward, and a pressing plate 52 is provided on the right side of the compression spring sheet 5 facing upward, and the left end corresponding to the elastic sheet 51 faces upward An elastic sheet pressure plate 511 is provided on one side of the elastic sheet. A pair of elastic sheet pressure plate fixing screws 5111 are arranged on the elastic sheet pressure plate 511, and the pair of elastic sheet pressure plate fixing screws 5111 are passed through the spring sheet 51 and the pressing spring sheet 5 in order. The right end of the elastic piece 51 is formed as a free end in the left pair of screw holes 62 of the aforementioned compression spring leaf and is forced on the compression spring leaf 5 between the right end of the compression plate 52 and the right end of the compression spring leaf 5. A compression plate pad 521 is provided between the pair of compression plate fixing screws 522 at a position corresponding to the upper right end of the compression plate 52. The pair of compression plate fixing screws 522 pass through the compression plate pad 521 and the compression spring plate in order. 5 screw in the aforementioned pair Yarn spring piece right connecting internal thread 112, the left end of the compression plate 52 is configured as a free end and held on the yarn pressing force spring plate 5. The function of the elastic sheet 51 and the pressing plate 52 (also referred to as a “pressing plate”) is to ensure the compression effect of the compression spring sheet 5 on the weft 7.

As shown in FIG. 1, the surface of the weft left holding plate 22 facing upward and the surface of the weft right holding plate 23 facing upward are configured as arched surfaces, that is, the left weft holding The overall shape of the plate 22 and the weft right holding plate 23 is a bread shape in the food category. This shape can ensure that the weft yarn 7 obtains the required tension, and can reduce the resistance to the weft yarn 7 travel.

Continuing to see FIG. 1, a substantially U-shaped deflection plate shaft seat cavity 13 is formed at the right end of the aforementioned mounting seat 1, and the cavity opening of the deflection plate shaft seat cavity 13 faces left, on the front side of the left end of the mounting seat 1 and at A position corresponding to the deflection plate shaft seat cavity 13 is provided with a torsion spring adjustment seat shaft head hole 14 which communicates with the deflection plate shaft seat cavity 13 on the rear side of the left end of the mounting seat 1 and correspondingly. A center shaft support hole 15 is provided at the center of the torsion spring adjustment seat shaft head hole 14. The center shaft support hole 15 also communicates with the deflection plate shaft seat cavity 13. The deflection plate reset mechanism 4 corresponds to the torsion spring adjustment. The seat shaft head hole 14 is located at the left end of the mounting seat 1 and is supported on the aforementioned central shaft support hole 15. A deflector shaft is formed on the right side of the deflector 6 and at a position corresponding to the deflector shaft housing 13. A seat 63, which is connected to the aforementioned deflector resetting mechanism 4 in the deflector shaft seat cavity 13.

In order to ensure the strength of the deflecting plate 6, a deflecting plate reinforcing rib 64 is formed at the middle of the height direction of the deflecting plate 6 and located on the left side. The deflection plate 6 is made of a magnetically permeable material and a gap S is formed between the deflection plate 6 and the electromagnet 3. When the armature 31 attracts the deflection plate 31, the gap S disappears, and when the armature 31 is released from the alignment When the deflection plate 6 is pulled in, that is, when the deflection plate 6 is released, the aforementioned gap S is restored.

The aforementioned deflecting plate shaft seat 63 has a deflecting plate shaft seat cavity 631, and the deflecting plate shaft seat cavity opening of the deflecting plate shaft seat cavity 631 faces forward and corresponds to the aforementioned torsion spring adjusting seat shaft head hole 14, during deflection A central shaft clearance hole 6311 is provided at the center of the bottom wall of the plate shaft seat cavity 631, and a deflection plate shaft seat fixed cavity bottom wall torsion spring foot is also located at one side of the off-center shaft position hole 6311. Into the hole 6312, the central shaft yielding hole 6311 corresponds to the central shaft support hole 15, and a shaft head lock is formed on the left end face of the mounting seat 1 and at a position corresponding to the torsion spring adjustment seat shaft head hole 14. Screw seat 16. The shaft head locking screw seat cavity 161 of the shaft head locking screw seat 16 communicates with the aforementioned torsion spring adjustment seat shaft head hole 14, and a shaft head locking screw is screwed in the shaft head locking screw seat cavity 161 1611.

Referring to FIG. 3 and combining with FIG. 1, the aforementioned deflection plate reset mechanism 4 includes a torsion spring adjusting seat 41, a deflection plate central shaft 42, and a torsion spring 43. A torsion spring adjusting seat is formed at the rear end of the torsion spring adjusting seat 41. Shaft head 411, the torsion spring adjustment seat Shaft head 411 is matched with the torsion spring adjustment seat shaft head hole 14 and locked by the aforementioned shaft head locking screw 1611, and a deflection is provided at the axial center position of the torsion spring adjustment seat 41 The central axis fixing hole 412 of the plate corresponds to a position in front of the central axis fixing hole 412 of the deflection plate. A hexagonal wrench adjusting hole 413 (ie, a "hexagonal plate head adjusting hole") is formed. A torsion spring is also provided on the torsion spring adjusting seat 41. The foot positioning hole 414, the front end of the deflection plate center shaft 42 is fixed to the torsion spring adjusting seat 41 at a position corresponding to the deflection plate center shaft fixing hole 412, and the rear end of the deflection plate center shaft 42 is giving way through the aforementioned central axis The hole 6311 is supported on the aforementioned central shaft support hole 15. The middle of the deflection plate central shaft 42 corresponds to the aforementioned deflection plate shaft seating cavity 631 and is sleeved with a sleeve 421. One end of the sleeve 421 faces the center shaft to give way to the hole 6311. Penetrate into the central axis yield hole 6311 and The mandrel yielding hole 6311 is fixed, the deflection plate central shaft 42 is substantially mated with the shaft sleeve 421, and the torsion spring 43 is sleeved on the shaft sleeve 421. The first torsion spring leg 431 of the torsion spring 43 is inserted into the torsion spring foot positioning hole. 414, and the second torsion spring leg 432 of the torsion spring 43 is inserted into the torsion spring foot access hole 6312 of the bottom wall of the cavity of the deflection plate shaft seat.

Loosen the shaft head locking screw 1611 and insert the wrench (external hex wrench) into the hexagonal wrench adjustment hole 413 to adjust the torsion spring holder 41 clockwise or counterclockwise by a certain angle, which can change the torsion of the torsion spring 43 and further The magnitude of the force of the torsion spring 43 on the deflection plate 6 is changed. After the adjustment of the torsion spring adjustment base 41 is completed, the shaft head locking screw 1611 is returned to the locked state of the torsion spring adjustment base shaft 411.

The aforementioned gap S is preferably 0.3-0.6 mm, preferably 0.45-0.55 mm, and more preferably 0.5 mm. In this embodiment, 0.5 mm is selected. The size of the gap S can be adjusted by changing the position of the electromagnet fixing screw 32 on the aforementioned adjustment groove 331. Specifically, the gap S can be changed by slightly moving the electromagnet 3 to the left or right.

As shown in FIG. 1, the lower end of the crimping spring piece fixing base 11 is fixed to the right end face of the mounting base 1 by the crimping spring piece fixing base screw 113, and on the front side corresponding to the crimping spring piece fixing base 11 and A fixing bracket 114 is additionally provided at each of the rear positions, and the fixing brackets 14 located on the front side and the rear side of the crimping spring plate fixing seat 11 are connected to each other by positioning pins 1141 and positioning screws 1142.

A mounting rod 17 is fixed to the left end of the mounting base 1 by a mounting rod fixing screw 171. The mounting rod 17 is located below the mounting base 1 and is fixed to the rapier loom in a use state.

According to the applicant's description in the background section above and according to the common sense in the art, it can be known that the position of the present invention on the rapier loom is between the weft receiver and the weft yarn detector. The weft yarn detector is usually provided with a sensor for detecting the weft yarn 7. Weft tension sensor for tension. The front of the weft receiver is a bobbin (simplified yarn, also known as a bobbin). The weft 7 exits the weft detector and enters the loom. Specifically, the weft 7 passes from the bobbin to the weft storage. It is then introduced from the weft introduction porcelain ring 611 of the present invention, passing through the weft left holding plate 22 and the weft right holding plate 23 and the pressing spring plate 5 and from the weft yarn to the porcelain ring 1111. The weft detector enters the loom.

Under normal circumstances, the weft tension control device of the present invention applies a static initial tension to the weft yarn 7. When the aforementioned weft tension sensor detects that the tension of the weft yarn 7 reaches or exceeds a preset value, the weft tension control device of the present invention cancels the weft yarn 7 The applied static initial tension can reduce the actual tension of the weft yarn 7 to weave the weak weft yarn at a higher speed by the loom.

The invention applies static initial tension to the weft yarn 7 in this way, the electromagnet 3 is energized, the armature 31 attracts the deflection plate 6, and the deflection plate 6 rotates an angle about the central axis 42 of the deflection plate, that is, the lower end of the deflection plate 6. Displace to the right, and the upper end of the deflection plate 6 swings to the left, driving (that is, pulling) the yarn pressing spring sheet 5 to make the yarn pressing spring sheet 5 in a tight state. At this time, the yarn pressing spring sheet 5 presses down the weft 7 , A static initial tension is applied to the weft yarn 7. When the electromagnet 3 loses power, under the action of the torsion spring 43, the deflection plate 6 is reset, detached from the suction of the electromagnet 3, and the compression spring sheet 5 is loosened and no longer presses the weft yarn 7.

Based on the structure of the present invention, when facing weft yarns 7 of heavy weft yarns such as the aforementioned coarse count yarn, coarse count glass fiber composite yarn, and coarse count basalt composite yarn, as mentioned above, since the sword head weft insertion process ends, the sword head sword belt It is still, and the weft yarn 7 will continue to move outside the cloth edge along the original movement direction or trajectory under the action of the flying inertia force. After the weft sword releases the weft yarn, the tail section of the weft yarn left outside the cloth edge is longer, which is easy to cause waste. . Therefore, the electromagnet 3 of the structure of the present invention can be controlled by the electrical controller of the rapier loom, and waste of the weft yarn 7 can be avoided. Specifically, at the end of the rapier weft insertion process, the electromagnet 3 is energized and sucks the deflection plate 6 Therefore, according to the foregoing description, the clamping spring force 5 applies a clamping force to the weft yarn 7 to prevent the weft yarn 7 from moving outside the cloth edge.

In summary, the technical solution provided by the present invention makes up for the shortcomings in the prior art, successfully completes the task of invention, and faithfully honors the technical effects described by the applicant in the above technical effect column.

Claims (10)

1. A weft tension control device for a rapier loom, which is characterized by including a mounting base (1), which is mounted on the rapier loom in the use state, and the mounting base (1) The right end is fixed with a yarn pressing spring plate fixing seat (11), a weft yarn exporting porcelain ring hole (111) is opened on the upper part of the yarn pressing spring plate fixing seat (11), and the weft yarn exporting porcelain ring hole (111) is embedded therein There is a weft yarn exporting porcelain ring (1111); a weft yarn holding mechanism (2), the weft yarn holding mechanism (2) is arranged in the middle of the upwardly facing side of the mounting seat (1) and corresponds to the The left side of the crimping spring plate fixing seat (11); an electromagnet (3), the electromagnet (3) is fixed to the side with the left end of the mounting seat (1) facing downward, and the electromagnet (3) The armature (31) is located to the left of the electromagnet (3); a deflector reset mechanism (4) is provided at a position corresponding to the upper part of the electromagnet (3). The left end of the mounting seat (1); a yarn pressing spring piece (5) and a deflection plate (6); the left end of the yarn pressing spring piece (5) is connected to the top of the deflection plate (6), and the yarn pressing spring piece (5) The middle corresponds to The weft yarn holding mechanism (2) is above, and the right end of the yarn pressing spring plate (5) is connected to the top of the yarn pressing spring plate fixing seat (11), and the deflection plate (6) is corresponding to the mounting seat ( The position of the left end of 1) is connected with the deflection plate reset mechanism (4), and a weft yarn introduction porcelain ring hole (61) is opened at the upper end of the deflection plate (6), and the weft yarn introduction porcelain ring hole (61) is provided A weft yarn is introduced into the porcelain ring (611), and the lower end of the deflection plate (6) extends toward the electromagnet (3) and corresponds to the left side of the armature (31).
2. The weft tension control device for a rapier loom according to claim 1, characterized in that a plate seat screw (121) is fixed on the mounting seat (1) and on the rear side of the mounting seat (1) by an electromagnet. ) An electromagnet fixing plate base (12) is fixed, the electromagnet fixing plate base (12) has an electromagnet fixing plate (122) extending downward, and the electromagnet fixing plate (122) corresponds to the electromagnet (3) ) And the electromagnet (3) is fixed to the electromagnet fixing plate (122).
3. The weft tension control device for a rapier loom according to claim 1, characterized in that the weft holding mechanism (2) comprises a weft holding plate screw head fixing base (21), and a left weft holding Plate (22) and a weft right holding plate (23), the weft yarn holding plate screw head fixing seat (21) is fixed to the mounting seat (1) through the weft yarn holding plate screw head fixing screw (211) In the middle of one side of the thread and corresponding to the left side of the crimping spring plate fixing seat (11), a weft thread left holding plate screw head is formed at a center position on the side of the weft thread left holding plate (22) facing downward. 221), the weft left holding plate screw head (221) is connected to the left end of the weft holding plate screw head fixing seat (21) and locked by the screw head screwed to the end of the weft left holding plate screw head (221) The nut Ⅰ (2211) is locked, and a weft right holding plate screw head (231) is formed at a centered position of the weft right holding plate (23) facing downward. The weft right holding plate screw head (231) and the weft yarn The right end of the holding plate screw head fixing seat (21) is connected and is screwed by a screw head lock nut that is screwed to the end of the weft right holding plate screw head (231). (2311) Locking, the side of the middle part of the yarn pressing spring piece (5) facing downward is simultaneously attached to the surface of the weft left holding plate (22) and the weft right holding plate (23) facing upward touch.
4. The weft tension control device for a rapier loom according to claim 1, characterized in that a pair of yarn pressing spring leaf right connection screw holes (112) are provided on the top of the yarn pressing spring leaf fixing seat (11). On the top of the deflecting plate (6), a pair of left-connecting screw holes (62) for pressing the spring plate is provided, and an elastic piece (51) is provided on the left side of the pressing spring plate (5) facing upward. A compression plate (52) is provided on the right side of the compression spring plate (5) facing upward, and an elastic plate pressure plate (511) is provided on the side corresponding to the left end of the elastic plate (51) facing upward. The elastic sheet pressure plate (511) is provided with a pair of elastic sheet pressure plate fixing screws (5111). The pair of elastic sheet pressure plate fixing screws (5111) are sequentially passed through the spring sheet (51) and the yarn pressing spring sheet (5) and screwed into the place. The right end of the elastic piece (51) is formed as a free end in the left connecting screw hole (62) of the pair of compression yarn spring pieces, and is forced on the compression spring piece (5), and the right end of the compression plate (52) and A compression plate backing plate (521) is arranged between the right ends of the compression spring plate (5), and a pair of compression plate fixing is arranged at a position corresponding to the upper right end of the compression plate (52). Set screw (522), the pair of compression plate fixing screws (522) pass through the compression plate pad plate (521) and the compression spring plate (5) in order and screw into the right connection screw hole (112) of the pair of compression spring plates ), The left end of the pressing plate (52) is formed as a free end and is forced on the pressing spring piece (5).
5. The weft tension control device for a rapier loom according to claim 3, characterized in that the surface of the weft left holding plate (22) facing upward and the weft right holding plate (23) Each of the surfaces facing the upper side is configured as an arcuate surface.
6. The weft tension control device for a rapier loom according to claim 1, characterized in that a deflector shaft seat cavity (13) is formed at the right end of the mounting seat (1), and the deflector shaft seat cavity (13) The cavity opening of 13) faces to the left, and a torsion spring adjusting seat shaft head hole (14) is provided on the front side of the left end of the mounting seat (1) and at a position corresponding to the deflector shaft seat cavity (13). The shaft head hole (14) communicates with the deflection plate shaft seat cavity (13). A central shaft support is provided at the left rear side of the mounting seat (1) and at the position corresponding to the center of the torsion spring adjustment seat shaft head hole (14). Hole (15), the central shaft support hole (15) is also in communication with the deflection plate shaft seat cavity (13), the deflection plate reset mechanism (4) is corresponding to the torsion spring adjustment seat shaft head hole (14) The position is provided at the left end of the mounting seat (1) and is supported on the central shaft support hole (15), on the right side of the deflection plate (6) and at a position corresponding to the deflection plate shaft seat cavity (13). A deflecting plate shaft seat (63) is connected to the deflecting plate reset mechanism (4) in a deflecting plate shaft seat cavity (13), and the deflecting plate (6) is made of a magnetically conductive material Made and A gap (S) is formed between the deflection plate (6) and the electromagnet (3). When the armature (31) attracts the deflection plate (31), the gap (S) disappears, and when When the armature (31) releases the suction of the deflection plate (6), the gap (S) is restored.
7. The weft tension control device for a rapier loom according to claim 6, characterized in that the deflection plate shaft seat (63) has a deflection plate shaft seat cavity (631), the deflection plate shaft seat cavity (631) 631) The cavity opening of the deflection plate shaft seat is facing forward and corresponds to the torsion spring adjustment seat shaft head hole (14), and a central shaft is opened at the center of the cavity bottom wall of the deflection plate shaft seat cavity (631). A yielding hole (6311) and a side of the central axis yielding hole (6311) is also provided with a deflection plate shaft seat fixed cavity bottom wall torsion spring foot access hole (6312), the central axis gives way A hole (6311) corresponds to the central shaft support hole (15), and a shaft is formed on the left end face of the mounting seat (1) and at a position corresponding to the torsion spring adjustment seat shaft head hole (14). A head lock screw seat (16), the shaft head lock screw seat cavity (161) of the shaft head lock screw seat (16) is in communication with the torsion spring adjustment seat shaft head hole (14), and the shaft head lock screw seat The cavity (161) is internally provided with a shaft head locking screw (1611); the deflection plate reset mechanism (4) includes a torsion spring adjusting seat (41), a deflection plate central shaft (42) and a torsion spring (43) ) The rear end of the torsion spring adjusting seat (41) is formed with a torsion spring adjusting seat shaft head (411), and the torsion spring adjusting seat shaft head (411) is matched with the torsion spring adjusting seat shaft head hole (14) and It is locked by the shaft head locking screw (1611), and a deflection plate central shaft fixing hole (412) is provided at the axial center position of the torsion spring adjusting seat (41), corresponding to the deflection plate central shaft fixing hole (412). A hexagonal wrench adjustment hole (413) is formed at the front position, and a torsion spring foot positioning hole (414) is also provided on the torsion spring adjustment seat (41). The front end of the central axis of the deflection plate corresponds to the central axis of the deflection plate. The position of the fixing hole (412) is fixed with the torsion spring adjusting seat (41), and the rear end of the central axis (42) of the deflection plate is supported on the central axis after passing through the central axis yield hole (6311). On the supporting hole (15), the middle part of the central axis of the deflection plate (42) corresponds to the deflection plate shaft seat cavity (631) and is sleeved with a sleeve (421), and the torsion spring (43) is sleeved on the sleeve (421) ), The first torsion spring leg (431) of the torsion spring (43) is inserted into the torsion spring foot positioning hole (414), and the second torsion spring leg (432) of the torsion spring (43) is inserted into the deflection plate. Torsion spring feet on the bottom wall of the shaft fixing cavity Into the hole (6312).
8. The weft tension control device for a rapier loom according to claim 8, characterized in that the gap (S) is 0.3-0.6 mm.
9. The weft tension control device for a rapier loom according to claim 1 or 3, characterized in that the lower end of the yarn pressing spring plate fixing seat (11) is connected with the screw by the yarn pressing spring plate fixing seat screw (113). The right end face of the mounting seat (1) is fixed, and a fixing bracket (114) is additionally provided at a position corresponding to the front side and the rear side of the pressing yarn spring plate fixing seat (11), which is located at the pressing yarn spring plate fixing seat (11). ) The front and rear fixing brackets (14) are connected to each other by positioning pins (1141) and positioning screws (1142).
10. The weft tension control device for a rapier loom according to claim 1, characterized in that a mounting rod (17) is fixed on the left end of the mounting base (1) by a mounting rod fixing screw (171), and the mounting The rod (17) is located below the mounting seat (1) and is fixed to the rapier loom in the use state.

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