Beating box of air jet loom

Abstract

The invention relates to a beating box of an air jet loom, wherein an outer and inner conjugate cam pieces and a primary driving gear are sequentially arranged inwardly from a large cover plate, and a loom main shaft that passes through the main box is connected. A swing shaft and a large bridge gear shaft, a planetary twisted edge transmission shaft, and a rear rod swing eccentric cam driving shaft are connected to the main box, which are sequentially driven by gear meshing. The other end of the swing shaft is connected to the box and fixedly connected to a master and slave power arm. The slave and master power arms are respectively provided with inner and outer rotors. An adjustment hole with a small sealing plate corresponding to the position of the master power arm and the outer rotor is provided on the large cover plate. The planetary twisted edge transmission shaft is externally connected to a planetary twisted edge device, and the rear rod swing eccentric cam driving shaft is fixed on an upper eccentric shaft section connected to the rear rod swing eccentric cam, and the rear rod swing eccentric cam is connected to a yarn guide shaft via the rear rod. It can take into account a pause weft insertion time of ≥60 degrees and a greater beating force, and the gaps between the beating, twisted edge, and cam rotors are adjustable and do not interfere with other parts of the loom.

Description

Technical Field

[0001] The invention relates to a loom, in particular to a beating box body of an air jet loom. Background Art

[0002] The main shaft of the air jet loom rotates at a constant speed of 360 degrees, and the beating reed must have enough pause time during weft insertion to allow the airflow to blow the weft yarn to fly to the end in the air slot of the air jet special-shaped reed, and must also quickly and forcefully hit the weft yarn to the front interweaving point of the loom at 0 degrees after the weft insertion is completed. The longer the pause time at the farthest position from the beating point, the more time is available for weft insertion, the lower the air pressure requirement for weft insertion, and the faster the speed can be; the greater the beating force, the fuller the style of the fabric woven by the loom, and the wider the range of adaptability to heavy varieties.

[0003] The existing 280cm wide air jet looms that normally operate within 550 rpm basically use an eccentric crank that drives the sley foot, sley and reed on the beating-up shaft through a six-link or four-link to solve the pause time required for weft insertion. The disadvantage is that the approximate pause time does not exceed 60 degrees at most, and the longer the pause time, the shorter the beating-up time and the smaller the force. The machine speed cannot be increased, and heavy fabrics cannot be woven. In addition, because the connecting rod on the eccentric crank rotates on the crank through the bearing bush, which is sliding friction, the bearing bush material requirements are high, it will wear out over time, it is troublesome to replace, the energy consumption is high, the beating-up force is small, there are many wearing parts, and the maintenance volume is large. The disclosure of the application No. 201110088652.1 of the air jet loom is a general introduction to the conjugate cam beating as a beating method of the air jet loom and its advantages, but there is no specific feasible implementation structure plan. It can be seen from the figure of its application data that it is an unfeasible plan, and the problem of adjusting the gap of the conjugate cam is not solved. Moreover, from the attached figure, the rotor with the swing shaft facing the large gear corresponds to a cam piece far from the large cover plate. In order not to interfere with the large gear of the bridge, the swing shaft needs to be moved outward, and the whole box will be larger, causing interference with other parts. The other rotor corresponds to the cam piece close to the large cover plate. In addition, combined with the shape of the cam piece, this structure is unscientific and cannot realize the jet beating and weft insertion. Summary of the invention

[0004] In view of the above problems, the present invention provides a jet loom beating box with a scientific and compact structure, stable transmission, which can take into account a pause weft insertion time of ≥60 degrees and a greater beating force, and can meet the requirements of beating and hemming. The cam rotor gap is adjustable and does not interfere with other parts of the loom.

[0005] The technical solution adopted by the present invention is: a beating box body of an air jet loom, comprising a main box body, one side of the main box body is arranged on the side of the loom, and the other side faces outward and is provided with a large cover plate, characterized in that it also includes a conjugated cam group, two rotors, a primary driving gear, a large bridge gear, a primary driven gear, a secondary driving gear, and a secondary driven gear, all of which are arranged in the main box body. The outer conjugated cam piece, the inner conjugated cam piece and the primary driving gear of the conjugated cam group are arranged inwardly in sequence from the large cover plate and are connected to the main shaft of the loom passing through the main box body. The main shaft of the loom is supported and rotated on the main box body and the large cover plate through bearings. The main box body is also connected with a swing shaft, a large bridge gear shaft, a planetary twisted edge transmission shaft, and a rear rod swing eccentric cam driving shaft parallel to the above-mentioned main shaft of the loom. The swing shaft is arranged above the main shaft of the loom, one end of the swing shaft is connected to the sley foot outside the main box body, and the other end of the swing shaft is connected to the box body and connected to the main and slave power arms. The main power arm is located at the swing axis to the large bridge On one side of the gear shaft, the slave power arm is correspondingly arranged on the other side of the swing shaft. The inner and outer rotors are respectively arranged on the slave power arm and the main power arm in a gapless rolling state on the inner and outer conjugate cam sheets of the conjugate cam group. The outer rotor is crimped by a pressure cover, and the rotor adjustable eccentric core shaft is adjustably arranged on the main power arm. The large cover plate is provided with adjustment holes corresponding to the positions of the main power arm and the outer rotor, and a small sealing plate is provided on the adjustment hole; the large bridge gear is passed through the large bridge gear shaft, and the large bridge gear is meshed with the primary driving gear. The planetary hemming transmission shaft is fixed in the main box body and is cocentrically provided with a primary driven gear and a secondary driving gear. The planetary hemming transmission shaft is externally connected to the planetary hemming device outside the main box body, and the rear rod swinging eccentric cam driving shaft is fixed and cocentrically provided with a secondary driven gear meshing with the secondary driving gear. The rear rod swinging eccentric cam is connected to the eccentric shaft section on the rear rod swinging eccentric cam driving shaft, and the rear rod swinging eccentric cam is connected to the yarn guide shaft through the rear rod.

[0006] Furthermore, the large bridge gear shaft is supported on a small side plate supported inside the main box body, and a notch for staggered adjustment holes is left on the small side plate supported inside the box.

[0007] Furthermore, the tooth ratio of the first-stage driven gear and the first-stage driving gear is 1:1, that is, the speed ratio of the planetary hem transmission shaft to the loom main shaft is 1:1, and the second-stage driving gear and the second-stage driven gear are meshed and have a tooth ratio of 1:1, that is, the speed ratio of the planetary hem transmission shaft to the rear rod swing eccentric cam drive shaft is 1:1.

[0008] Furthermore, the secondary driving gear and the primary driven gear share a gear.

[0009] Further, the secondary driven gear directly meshes with the primary driven gear.

[0010] Furthermore, the driving shaft of the rear rod swing eccentric cam and the planetary twisted edge transmission shaft are combined into one shaft, and no secondary main gear and secondary driven gear are provided.

[0011] Furthermore, a sley with a beating reed is provided on the sley foot.

[0012] The benefits of the present invention are as follows: 1. The inner and outer conjugate cam pieces of the conjugate cam group act on the inner and outer rotors on both sides of the swing shaft correspondingly. The pressure cover can be loosened and the rotor adjustable eccentric core shaft can be rotated through the adjustment hole with a special wrench to correct the fitting gap between the outer rotor and the outer conjugate cam piece, so that the inner and outer rotors and the inner and outer conjugate cam pieces can roll with each other without gap. The conjugate cam group can achieve a longer pause weft insertion time of ≥60 degrees and a greater weft beating force after acceleration optimization through curve design; 2. A small side plate supporting the large bridge gear shaft is provided in the main box body and a notch is reserved. An adjustment hole with an outer sealing plate is provided on the large cover plate of the main box body. The rotor adjustable eccentric shaft of the outer rotor on the main force arm can be adjusted through the adjustment hole by opening the outer sealing plate, thereby adjusting the fitting gap between the outer rotor and the outer conjugate cam piece. The design reserves the required space for adjustment. On the basis of adapting to the existing loom, the interference of the original components is considered. and ease of operation, effectively solving the difficult problems of installation and maintenance of the conjugate cam beating structure; 3. This box not only solves the beating problem, but also realizes the rotary mechanical transmission of the planetary twill mechanism and the eccentric vibration mechanical transmission output of the yarn guide shaft driven by the power arm and the rear rod through reasonable design; 4. The power shaft of the conjugate cam group is set below the swing arm and rotor of the two rotors of the swing shaft, and the loom sley and the reed are above the swing shaft, realizing the dynamic balance of high-speed reciprocating motion, and the machine has less vibration when running at high speed; 5. The outer dimensions of the box are the same as those of the existing Japanese looms, and the accessories except this box are common with the original Japanese air-jet looms, which is convenient for mass production of looms, and the space occupied by the looms is the same. The loom requires low air pressure, low energy consumption, large beating force, few wearing parts, small maintenance, small vibration, and fast speed. The speed can run at 800 rpm for a 280cm width machine, which is the first choice for upgrading the existing crank beating machine models. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 for Figure 1 Schematic diagram of the internal structure.

[0015] In the figure: main box body 1, main shaft 2, inner conjugate cam piece 3, outer conjugate cam piece 4, inner rotor 5, outer rotor 6, rotor adjustable eccentric core shaft 7, pressure cover 8, adjustment hole 9, swing shaft 10, primary driving gear 11, large bridge gear 12, primary driven gear 13, secondary driving gear 14, secondary driven gear 15, planetary hemming transmission shaft 16, rear rod swing eccentric cam drive shaft 17, large bridge gear shaft 18, small side plate 19 in the box support, rear rod swing eccentric cam 20, planetary hemming device 21, sley foot 22, sley 23, beating reed 24, rear rod 25, yarn guide shaft 26, yarn 27, active power arm 28, driven power arm 29, large cover plate 30, outer sealing plate 31. DETAILED DESCRIPTION

[0016] The invention is further described below with reference to the embodiments and the accompanying drawings.

[0017] Figure 1 , 2As shown: A beating box of an air jet loom comprises a main box 1, a main shaft 2, an inner conjugate cam piece 3, an outer conjugate cam piece 4, an inner rotor 5, an outer rotor 6, a rotor adjustable eccentric mandrel 7, a pressure cover 8, a swing shaft 10, a primary driving gear 11, a large bridge gear 12, a primary driven gear 13, a secondary driving gear 14, a secondary driven gear 15, a planetary hemming transmission shaft 16, a rear rod swing eccentric cam drive shaft 17, a large bridge gear shaft 18, a small side plate 19 in the box for supporting, a rear rod swing eccentric cam 20, a planetary hemming device 21, a sley foot 22, a sley 23, a beating reed 24, a rear rod 25, a yarn guide shaft 26, a primary power arm 28, a secondary power arm 29, a large cover plate 30, and an outer sealing plate 31. The main box 1 is arranged on the side of the loom, Inner conjugate cam piece 3, outer conjugate cam piece 4, inner rotor 5, outer rotor 6, rotor adjustable eccentric mandrel 7, pressure cover 8, primary driving gear 11, large bridge gear 12, primary driven gear 13, secondary driving gear 14, secondary driven gear 15, conjugate cam group 3 and primary driving gear 11 are connected to the main shaft 2 penetrating into the main housing 1, a large cover plate 30 is arranged on the outside of the main housing 1, and a swing shaft 10 parallel to the above main shaft, a large bridge gear shaft 18, a planetary twisted edge transmission shaft 16, a rear rod swing eccentric cam drive shaft 17, a swing One end of the shaft 10 is connected to the sley foot 22 outside the main housing, and a sley foot 22 is provided with a sley 23 with a beating reed 24. The other end of the swing shaft 10 is connected to the main housing and connected to a driving force arm 28 and a driven force arm 29. The driving force arm is located on one side of the swing shaft to the large bridge gear shaft, and the driven force arm is correspondingly arranged on the other side of the swing shaft. The inner and outer rotors 5 and 6 are respectively connected to the driven force arm 29 and the driving force arm 28. The outer rotor 6 is pressed onto the driving force arm 28 by a pressure cover 8 through a rotor adjustable eccentric core shaft 7. The inner and outer rotors correspond to the inner and outer conjugate cams of the conjugate cam group. The wheel piece rolls without gap, and an adjustment hole 9 is opened on the large cover plate 30 corresponding to the position of the main force arm and the outer rotor. The outer sealing plate 31 is installed on the upper cover of the adjustment hole. The upper cover of the adjustment hole can be opened to rotate the rotor adjustable eccentric mandrel 7 with a special wrench to correct the fitting gap between the outer rotor 6 and the outer conjugate cam piece 4, so that the inner and outer rotors respectively fit and roll with the inner and outer conjugate cam pieces without gap; the large bridge gear shaft 18 is connected with the large bridge gear 12, and the large bridge gear 12 is meshed with the primary driving gear 11. The planetary twisted edge transmission shaft 18 is connected to the primary driven gear 11 in the main box body 1. Gear 13 and secondary driving gear 14, planetary hemming transmission shaft 18 is externally connected to the loom planetary hemming device 21 placed outside the main box 1, the rear rod swing eccentric cam driving shaft 17 is connected with the secondary driven gear 15 meshing with the secondary driving gear, the rear rod swing eccentric cam driving shaft is connected with the rear rod swing eccentric cam 20, the rear rod swing eccentric cam 20 is connected to the yarn guide shaft 26 through two rear rods 25 hinged in sequence, and the rear rod swing eccentric cam driving shaft drives the rear rod swing eccentric cam to eccentrically drive the yarn guide shaft 26 to vibrate and guide the yarn 27 via the rear rod 25.The large bridge gear shaft is supported on a small side plate 19 in the main housing, and a notch is left on the small side plate 19 in the housing to stagger the position of the adjustment hole.

[0018] In this embodiment, the tooth ratio of the first-stage driven gear and the first-stage driving gear is 1:1, that is, the speed ratio of the planetary hem transmission shaft to the loom main shaft is 1:1, and the second-stage driving gear and the second-stage driven gear are meshed and have a tooth ratio of 1:1, that is, the speed ratio of the planetary hem transmission shaft to the rear rod swing eccentric cam drive shaft is 1:1.

[0019] In this embodiment, the planetary hem mechanism is an existing purchased product and can be used directly.

[0020] Based on the above embodiment, the secondary driving gear and the primary driven gear may also share a gear.

[0021] Based on the above embodiment, the secondary driven gear may also be directly meshed with the primary driven gear.

[0022] On the basis of the above embodiment, the driving shaft of the rear lever swing eccentric cam and the planetary twisted edge transmission shaft can also be combined into one shaft, without the secondary main gear and the secondary driven gear.

Claims

1. A beating box for an air jet loom, comprising a main box and a large cover plate, wherein one side of the main box is arranged at the side of the loom, and the other side faces outward and is provided with a large cover plate, characterized in that: The machine also includes a conjugated cam group, two rotors, a primary driving gear, a large bridge gear, a primary driven gear, a secondary driving gear, a secondary driven gear, and a small side plate supporting the box, all of which are arranged in the main box body. The outer conjugated cam piece of the conjugated cam group, the inner conjugated cam piece of the conjugated cam group and the primary driving gear are arranged inward in sequence from the large cover plate. The outer conjugated cam piece, the inner conjugated cam piece and the primary driving gear are connected to the main shaft of the loom passing through the main box body. The main shaft of the loom is supported and rotated on the main box body and the large cover plate through bearings. The main box body is also connected with a swing shaft, a large bridge gear shaft, a planetary twisted edge transmission shaft, and a rear rod swing eccentric cam drive shaft that are parallel to the above-mentioned loom main shaft. The swing shaft is arranged above the loom main shaft, one end of the swing shaft is connected to the sley foot outside the main box body, and the other end of the swing shaft is connected to the box body and fixedly connected to the main and slave power arms. The main power arm is located on one side of the swing shaft to the large bridge gear shaft, and the slave power arm is correspondingly arranged On the other side of the swing shaft, inner and outer rotors are respectively arranged on the slave power arm and the master power arm, and the inner and outer rotors roll on the inner and outer conjugate cam pieces of the conjugate cam group without gaps. The outer rotor is crimped by a pressure cover, and the rotor adjustable eccentric core shaft is adjustably arranged on the master power arm. An adjustment hole corresponding to the position of the master power arm and the outer rotor is arranged on the large cover plate, and a small sealing plate is arranged on the adjustment hole; the large bridge gear is passed through the large bridge gear shaft, and the large bridge gear is meshed with the primary driving gear. The planetary hemming transmission shaft is fixed in the main housing body and is cocentrically provided with a primary driven gear and a secondary driving gear. The planetary hemming transmission shaft is externally connected to a planetary hemming device outside the main housing body, and the rear rod swing eccentric cam driving shaft is fixed and cocentrically provided with a secondary driven gear meshing with the secondary driving gear. The rear rod swing eccentric cam is connected to the eccentric shaft section on the rear rod swing eccentric cam driving shaft, and the rear rod swing eccentric cam is connected to the yarn guide shaft through the rear rod.

2. The beating box of an air jet loom according to claim 1, characterized in that: The main box body is provided with a small side plate for supporting the box, one end of the large bridge gear shaft is supported on the small side plate for supporting the box inside the main box body, and the other end is supported on the main box body, and a notch is left on the small side plate for supporting the box inside to stagger the main power arm, the outer rotor and the pressure cover. Sufficient spacing is left between the small side plate for supporting the box inside and the large cover plate, and an adjustment hole and an outer sealing plate are provided on the large cover plate at the position of the outer bearing and the pressure cover on the main power arm.

3. The beating box of an air jet loom according to claim 1, characterized in that: The tooth ratio of the primary driven gear and the primary driving gear is 1:1, that is, the speed ratio of the planetary hem transmission shaft to the loom main shaft is 1:1, and the secondary driving gear and the secondary driven gear are meshed and have a tooth ratio of 1:1, that is, the speed ratio of the planetary hem transmission shaft to the rear rod swing eccentric cam drive shaft is 1:

1.

4. The beating box of an air jet loom according to claim 1, characterized in that: The secondary driving gear and the primary driven gear share a gear.

5. The beating box of an air jet loom according to claim 1, characterized in that: The secondary driven gear directly meshes with the primary driven gear.

6. The beating box of an air jet loom according to claim 1, characterized in that: The driving shaft of the rear rod swing eccentric cam and the planetary twisted edge transmission shaft are combined into one shaft, and no secondary main gear and secondary driven gear are provided.

7. The beating box of an air jet loom according to claim 1, characterized in that: A sley with a beating reed is arranged on the sley foot.

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