CN1550593A - Shedding device for loom - Google Patents

Abstract

The invention discloses a shedding device of a loom, which comprises a plurality of driving mechanisms corresponding to a plurality of heald frames, and each driving mechanism includes a rotary driving source, a speed reducer, a bearing and a motion conversion mechanism; The output shaft of the source is connected with the deceleration shaft driven by the rotation deceleration of the output shaft, and is installed on the frame of the shedding device; the bearing is arranged on the frame of the shedding device; the motion transformation mechanism has a rod and a rotating element connected with the heald frame, and can The rotary motion of the reduction shaft is converted into the linear reciprocating motion of the rod by the rotary element. The rotating element includes one end connected to the reduction shaft, the other end supported by a bearing, and a middle part between the one end and the other end connected to the rod in a rocking manner. The shedding device of the loom of the invention can reduce the manufacturing cost of the loom, and can obtain stable warp yarn shedding movement.

Description

Shedding device for loom

technical field

The invention relates to a shedding device for forming warp yarn shedding on a loom.

Background technique

Japanese Patent Laying-Open No. 2002-129446 (FIG. 5, FIG. 6) discloses a shedding device comprising a plurality of drive mechanisms corresponding to a plurality of heald frames. In this prior art, each drive mechanism includes a rotary drive source and a motion conversion mechanism, wherein the rotary drive source is installed on a shedding device frame different from the loom frame; the motion conversion mechanism has a rod connected to the heald frame and a rotary element, The rotary motion of the output shaft of the rotary drive source can be converted into the linear reciprocating motion of the rod by the rotary element. One end of the rotary element is relatively non-rotatably assembled to the output shaft of the rotary drive source. In addition, one end of the rotary element is suspended from the output shaft of the rotary drive source.

In the above-mentioned shedding device, the speed reducer is not arranged between the rotary drive source and the heald frame. In addition, in order to increase the productivity of the loom, it is necessary to move the heald frame up and down at high speed, so that the rotary drive source must use a high-torque and fast-response dedicated motor. Such a rotary drive source is expensive and increases the manufacturing cost of the loom.

In the above shedding device, the reaction force caused by warp yarn tension is applied from the heald frame to the rotating element, and the bearing inside the rotary drive source concentrates on receiving the reaction force from the heald frame. Therefore, the joint in which the rotary element and the output shaft of the rotary drive source are assembled so that they cannot rotate relative to each other receives a reaction force from the heald frame and bends. In addition, since the joint is bent, the rotation center of the rotating element deviates, and the opening device vibrates. As a result, a stable warp yarn opening cannot be obtained, and the bearings inside the rotary drive source are also prone to wear.

Contents of the invention

The purpose of the present invention is to aim at the above-mentioned deficiencies of the prior art, propose a kind of rotary motion that utilizes motion transformation mechanism to transform the rotary drive source corresponding to the heald frame one by one, thereby drives the shedding device of each heald frame, it can reduce the loom Manufacturing cost, and stable warp opening movement can be obtained.

The above object of the present invention is achieved through the following technical solutions: the first shedding device of the present invention includes several driving mechanisms, and the driving mechanisms correspond to several heald frames one by one. Each drive mechanism includes a rotary drive source, a reducer, a bearing and a motion conversion mechanism. The above-mentioned speed reducer is connected to the output shaft of the rotational drive source, has a speed reduction shaft that is driven by decelerating the rotation of the output shaft, and is attached to the opening device frame. The above-mentioned bearing is arranged on the frame of the opening device. The motion conversion mechanism has a rod connected to the heald frame and a rotary element, and can convert the rotary motion of the reduction shaft into the linear reciprocating motion of the rod by the rotary element. The rotating element includes one end connected to the reduction shaft, the other end supported by a bearing, and a middle part located between the one end and the other end and oscillatingly connected to the rod.

The shedding device frame is arranged on an outer side of the heald frame in the weaving direction, and has a side wall along the weaving direction. Several rotary driving sources are arranged on the side wall in several rows. The above-mentioned speed reducer is installed on the side wall, and the speed reduction shaft Can penetrate side walls.

The second shedding device of the present invention has a plurality of first driving mechanisms corresponding to a plurality of heald frames and a plurality of second driving mechanisms corresponding to other heald frames. Each first drive mechanism includes a first rotary drive source, a first speed reducer, a first bearing, and a first motion conversion mechanism. The above-mentioned first speed reducer is connected to the first output shaft of the first rotary drive source, has a first speed reduction shaft for decelerating the drive by the rotation of the first output shaft, and is installed on the first opening device frame. The above-mentioned first bearing is arranged on the first opening device frame. The first motion conversion mechanism has a first rod connected to the heald frame and a first rotating element, and can convert the rotating motion of the first reduction shaft into the linear reciprocating motion of the first rod by the first rotating element. Each second drive mechanism includes a second rotary drive source, a second speed reducer, a second bearing, and a second motion conversion mechanism. The second speed reducer is connected to the second output shaft of the second rotational drive source, has a second speed reduction shaft that is driven by the rotation of the second output shaft, and is mounted on the second opening device frame. The above-mentioned second bearing is arranged on the frame of the second opening device. The second motion conversion mechanism has a second rod connected to the heald frame and a second rotating element, and can transform the rotating motion of the second reduction shaft into the linear reciprocating motion of the second rod by using the second rotating element. The above-mentioned first rotating element includes a first one end connected to the first reduction shaft, a first other end supported by the first bearing, and a first rod located between the first one end and the first other end. Shake the first middle part of the connection. The second rotating element includes a second one end connected to the second reduction shaft, a second other end supported by the second bearing, and a second rod located between the second one end and the second other end. Shake the attached second middle section. The above-mentioned first and second opening device frames are respectively arranged on one outer side and the other outer side of the heald frame in the weaving direction, and have first and second side walls along the weaving direction. Each of the first rotary driving source and the second rotary driving source is respectively arranged in several rows on the first and second side walls of the first and second opening device frames. Each first reducer and each second reducer are correspondingly installed on the first and second side walls of the first and second opening device frames. Each first deceleration shaft and each second deceleration shaft respectively correspond to the first and second side walls penetrating through the first and second opening device frames.

In the second shedding device, several first driving mechanisms correspond to the heald frames near the weaving fell side and adjacent and continuous several heald frames, and several second driving mechanisms correspond to the heald frames adjacent to the rearmost ends of the above-mentioned continuous heald frames. The heald frame and several adjacent and continuous heald frames.

The second opening device can also include some third driving mechanisms corresponding to other heald frames one by one. In this case, each third drive mechanism includes a third rotational drive source, a third speed reducer, a third bearing, and a third motion conversion mechanism. The third speed reducer is connected to the third output shaft of the third rotational drive source, has a third speed reduction shaft that is driven by decelerating the rotation of the third output shaft, and is mounted on the first opening device frame. The above-mentioned third bearing is arranged on the first opening device frame. The third motion conversion mechanism has a third rod connected to the heald frame and a third rotating element, and can convert the rotating motion of the third reduction shaft into the linear reciprocating motion of the third rod by the third rotating element.

In the opening device, the third rotating element includes a third one end connected to the third reduction shaft, a third other end supported by a third bearing, and a third end located between the third one end and the third other end, A third middle part connected to the third rod rockingly. The above-mentioned first opening device frame has a third side wall opposite to the first side wall and extending along the weaving direction. The third rotational driving source is arranged on the third side wall in several rows. Each third reducer is installed on the third side wall. Each third reduction shaft passes through the third side wall.

In the second shedding device, several first driving mechanisms correspond to the first heald frames near the cloth fell side and adjacent and continuous first heald frames, and several second driving mechanisms correspond to the above-mentioned continuous first heald frames The second heald frame adjacent to the rearmost end of the second heald frame and the adjacent and continuous second heald frames, and the third driving mechanism corresponds to the third heald frame adjacent to the rearmost end of the above-mentioned continuous second heald frame and the This adjacent and continuous number of third heald frames.

In the second opening device, the first and third bearings can be supported on the first opening device frame by a common bearing supporting part.

The third shedding device of the present invention has a plurality of first driving mechanisms corresponding to the plurality of heald frames and a plurality of second driving mechanisms corresponding to the plurality of heald frames. Each first drive mechanism includes a first rotary drive source, a first speed reducer, a first bearing, and a first motion conversion mechanism. The above-mentioned first reduction gear is connected to the first output shaft of the first rotary drive source, has a first reduction shaft for decelerating the drive by the rotation of the first output shaft, and is installed on the opening device frame. The above-mentioned first bearing is arranged on the frame of the opening device. The first motion conversion mechanism has a first rod connected to the heald frame and a first rotating element, and can convert the rotating motion of the first reduction shaft into the linear reciprocating motion of the first rod by the first rotating element. Each second drive mechanism includes a second rotary drive source, a second speed reducer, a second bearing, and a second motion conversion mechanism. The second speed reducer is connected to the second output shaft of the second rotational drive source, has a second speed reduction shaft that is driven by the rotation of the second output shaft, and is mounted on the frame of the opening device. The above-mentioned second bearing is arranged on the frame of the opening device. The second motion conversion mechanism has a second rod connected to the heald frame and a second rotating element, and can transform the rotating motion of the second reduction shaft into the linear reciprocating motion of the second rod by using the second rotating element. The above-mentioned first rotating element includes a first one end connected to the first reduction shaft, a first other end supported by the first bearing, and a first rod located between the first one end and the first other end. Shake the first middle part of the connection. The above-mentioned second rotating element includes a second one end connected to the second reduction shaft, a second other end of the second bearing support block, and a second end located between the second one end and the second other end, and the second The rod rocks the second middle part of the connection. The shedding device frame is disposed on an outer side of the heald frame in the weaving direction, and has first and second side walls opposite to each other and along the weaving direction along the weaving direction. The first rotational driving sources and the second rotational driving sources are correspondingly arranged in several rows on the first and second side walls. Each first reducer and each second reducer are correspondingly installed on the first and second side walls. Each first deceleration shaft and each second deceleration shaft respectively pass through the first and second side walls.

In the third shedding device, several first driving mechanisms correspond to the heald frames near the weaving fell side and several adjacent and continuous heald frames, and several second driving mechanisms correspond to the heald frames adjacent to the rearmost ends of the above-mentioned continuous heald frames. The heald frame and several adjacent and continuous heald frames.

In the third opening device, the first and second bearings can be supported on the opening device frame by a common bearing supporting part.

In each opening device, the axis of each reduction shaft is parallel to the axis of the output shaft of the corresponding rotary drive source.

In each opening device, the axes of the output shafts and the bearings of the respective rotary driving sources and the corresponding bearings are set to be common, and the axes of the intermediate parts are deviated from the common axis.

In each opening device, each rotating element is slightly circular when viewed in the direction of the axis of rotation, and can be used as an eccentric cam connected eccentrically at the middle part.

Compared with the prior art, the present invention has the following beneficial effects: in the first, second and third opening devices, each drive mechanism is provided with a speed reducer between the rotary drive source and the motion conversion mechanism. In this way, the use of a high-torque and fast-response rotary drive source can be avoided, thereby greatly reducing the manufacturing cost of the loom.

In the first, second and third shedding devices, each driving mechanism receives the reaction force from the heald frame at the middle part of the rotating element. One end and the other end of the rotating element on both sides of the middle part of each driving mechanism are respectively supported on the frame of the opening device by two points of a speed reducer and a bearing.

The rotating element is on both sides of the middle part that bears the reaction force from the heald frame, and two points are supported on the shedding device frame, which can improve the rigidity of the driving mechanism without affecting the vibration of the loom, etc. The heald frame can perform stable shedding movement, And even if a reduction gear is installed between the rotary drive source and the heald frame, the force acting on the reduction shaft of the reduction gear will be halved, extending the life of the internal bearings of the reduction gear.

In the second shedding device, several first driving mechanisms correspond to the heald frames near the weaving fell side and several adjacent and continuous heald frames, and several second driving mechanisms correspond to the rearmost ends of the heald frames corresponding to the above-mentioned first driving mechanisms Adjacent heald frames and adjacent and continuous several heald frames, in this way, the heald frames corresponding to the first driving mechanism are arranged continuously, and then the heald frames corresponding to the second driving mechanism are arranged continuously, and the configuration corresponds to the first A heald frame corresponding to the second driving mechanism may be arranged at the interval in the front-back direction of the bearing of the first driving mechanism. In this way, compared with the situation in which the heald frames are alternately arranged from front to back in order to correspond to the first and second drive mechanisms on the left and right in the weaving direction, the arrangement interval of the heald frames can be shortened, and the stress on the warp can be reduced.

In the second shedding device, several third drive mechanisms correspond to the heald frames adjacent to the rear end of the heald frame corresponding to the second drive mechanism and several adjacent and continuous heald frames. In addition, in the third aspect of the present invention In the shedding device, several first driving mechanisms correspond to the heald frames near the weaving fell side and several adjacent and continuous heald frames, and several second driving mechanisms correspond to the heald frames corresponding to the first driving mechanism. In this way, compared with the situation where the heald frames are alternately arranged in the left and right sides of the weaving width direction or the front and rear directions of the weaving fell, the heald frames can be shortened The arrangement pitch of the frame reduces the stress to the warp.

Description of drawings

Fig. 1 is the plan view of the loom with the shedding device in the first embodiment of the present invention, omitting part of the driving mechanism and the crank rod;

Fig. 2 is a horizontal sectional view of the opening device shown in Fig. 1;

Fig. 3 is a front view of the loom shown in Fig. 1, omitting part of the driving mechanism and the crank rod;

Fig. 4 is a front view of the loom shown in Fig. 1, omitting other parts of the drive mechanism and the crank rod;

Fig. 5 is a schematic plan view showing the deformation of the opening device shown in Fig. 1;

Fig. 6 is a schematic plan view showing the deformation of the opening device shown in Fig. 5;

Fig. 7 is a schematic plan view showing the deformation of the opening device shown in Fig. 6;

Fig. 8 is a figure showing deformation of the opening device rotating element shown in Fig. 1, (A) is a figure viewed from the front and rear directions of the rotating element, and (B) is a partial cross-sectional view of the rotating element viewed from the up-down direction;

Fig. 9 is a schematic plan view showing the deformation of the opening device shown in Fig. 7;

Fig. 10 is a schematic plan view showing a modification of the opening device shown in Fig. 9 .

Among them, 10 is a shedding device: 12 is a heald frame; 14 is a driving mechanism; 16 is a loom; 18, 20 are loom frames; 22, 24 are shedding device frames; 26, 28 are front side walls; Rear side wall; 34, 36 are supporting walls; 38 is bearing; 40 is rotating element; 42 is rotating drive source; 44 is reducer; 46 is motion transformation mechanism; 48 is deceleration shaft; 50 is output shaft; 52 is deceleration Gear; 54 is one end; 56 is the other end; 58 is the middle part; 60 is the fitting hole; 62 is the hole for the bearing; 64 is the crank rod; 66 is the bearing; 68 is the support mechanism; 70 is the rocker; 72 74 is a support shaft; 76 is a support; 78 is a support body; 80 is an arm; 82 is a support shaft; 84 is an eccentric shaft; 86 is a wedge.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

In this embodiment, the so-called "front and rear direction" refers to the warp movement direction caused by let-off, the so-called "up and down direction" refers to the moving direction of the heddle frame, and the so-called "weaving width direction" and "left-right direction" refer to the transmission of weft yarns. Direction (left and right directions viewed from the downstream of the warp moving direction). In addition, the "front side" and "rear side" refer to the downstream and upstream of the warp moving direction, respectively.

As shown in FIGS. 1 to 4 , the shedding device 10 includes a plurality of driving mechanisms 14 corresponding to a plurality of heald frames 12 one by one.

As shown in Figure 1, a number of heald frames 12 are disposed between the loom frames 18 and 20 on the left and right sides of the loom 16, and the shedding device 10 is an electric shedding device, which enables the heald frames 12 and the healds arranged on it to The threads are reciprocated together in an up and down direction to form warp openings.

As shown in FIG. 1 , FIG. 3 and FIG. 4 , in this embodiment, it is assumed that the loom 16 has 16 heald frames 12 . Therefore, the shedding device 10 has 16 driving mechanisms 14 corresponding to the heald frames 12 one by one.

As shown in FIG. 1 , the shedding device 10 has shedding device frames 22 and 24 that are different from the loom frames 18 and 20 on the left and right sides of the loom 16 . The opening device frames 22 and 24 are respectively arranged on the outer sides of the loom frames 18 and 20 , and are integrally assembled to the corresponding loom frames 18 and 20 by using a fixing mechanism (not shown).

The cross-sectional shapes of the opening device frames 22 and 24 along the planes in the left-right direction and the front-rear direction are substantially hollow rectangles when viewed from the up-down direction. The shedding device frames 22 and 24 respectively have front side walls 26 and 28 and rear side walls 30 and 32 along the left-right direction and the up-down direction (at right angles to the warp moving direction).

Front side walls 26 and 28 oppose rear side walls 30 and 32, respectively. The driving mechanisms 14 shown in the figure are divided into four groups, and each group of four is installed on the front side walls 26 and 28 and the rear side walls 30 and 32 of the opening device frames 22 and 24 .

The opening device frames 22 and 24 have support walls 34 and 36, respectively. The supporting walls 34 and 36 are respectively connected to the front side wall 26 and 28 of the opening device frame 22 and 24 and the left side connecting wall and the right side connecting wall of the rear side wall 30 and 32, and the front side wall 26 and 28 and the rear side wall Between 30 and 32, it extends toward the hollow part (ie, inside) of the opening device frames 22 and 24. The support walls 34 , 36 support the rotating element 40 with bearings 38 .

Each drive mechanism 14 includes a rotational drive source 42 , a speed reducer 44 , a bearing 38 , and a motion conversion mechanism 46 . In the present embodiment, the rotary drive source 42 uses a dedicated motor corresponding to the heald frames 12 one-to-one.

As shown in FIG. 2 , each drive mechanism 14 reduces the rotational speed of the output shaft 50 of each drive source 42 by a reducer 44 , and the rotating element 40 rotates around the reducer shaft 48 as the reducer shaft 48 of the reducer 44 rotates.

The rotation drive source 42 and the main shaft drive motor that drives the main shaft of the loom 16 are controlled separately, but the rotation of the output shaft 50 is synchronized with the main shaft rotation.

Specifically, each rotary drive source 42 is connected to an aperture sensor (not shown) to which a spindle rotation angle signal is input. The shedding sensor is pre-set and stored with a driving parameter, which is set in consideration of the shedding movement corresponding to the rotation angle of the main shaft of the loom. The aperture sensor drives each rotary drive source 42 in synchronization with the rotation of the main shaft based on the drive amount parameter.

The reducer 44 has a plurality of reduction gears 52 meshing with each other inside, and the rotation of the output shaft 50 of the rotational drive source 42 is decelerated by these reduction gears 52 and transmitted to the reduction shaft 48 .

Specifically, each reduction shaft 48 is rotatably supported by the bearing 38 with respect to the reduction gear 44 , in other words, each reduction shaft 48 is supported by the opening device frames 22 and 24 by the reduction gear 44 . One end of each reduction shaft 48 is assembled with a final stage reduction gear 52 so as to be relatively non-rotatable. The rotational movement of the output shaft 50 is decelerated by several reduction gears 52 of the reducer 44 and transmitted to the reduction shaft 48 .

The other ends of the reduction shafts 48 pass through the front and rear side walls 26 , 28 , 30 and 32 of the opening device frames 22 and 24 respectively, and extend toward the inside of the opening device frames 22 and 24 . But speed reducer 44 also can use other known devices beyond gear meshing, for example: use the speed reducer of timing pulley and toothed belt.

Four speed reducers 44 are attached to the outer surfaces of the front side wall 26 and the rear side wall 30 of the opening device frames 22 and 24 in two rows on the left and right, in two rows up and down.

Each speed reducer 44 has the axis of its reduction shaft 48 parallel to the axis of the output shaft 50 of the rotary drive source 42 . In this way, the necessary area for installing the front and rear side walls 26, 28, 30, and 32 corresponding to the speed reducer 44 and the rotary drive source 42 can be reduced, thereby achieving efficient arrangement.

The rotating element 40 is crank-shaped, and its two ends in the axial direction are respectively one end 54 and the other end 56 , and the middle part 58 is between the one end 54 and the other end 56 .

One end portion 54 of the rotary member 40 is connected to the reduction shaft 48 in a relatively non-rotatable manner using known connection means. Specifically, a fitting hole 60 is formed in the one end portion 54 , and the front end of the speed reduction shaft 48 is fitted into the fitting hole 60 so as to be relatively non-rotatable. The rotating element 40 and the decelerating shaft 48 can be connected to the front end of the one end 54 by a known connection method such as a pipe joint protruding from the cylindrical portion, or the decelerating shaft 48 and the one end 54 of the rotating element 40 can be integrally formed.

The other end portion 56 of each drive element 40 is rotatably fitted in a bearing 38 fitted in a bearing hole 62 provided in the support wall 34 or 36 . The bearing holes 62 jointly support the bearing 38 and the bearing 38 that respectively support the other end portion 56 of the rotating element 40 included in the front wall 26 or 28 and the other end portion 56 of the rotating element 40 included in the rear wall 30 or 32 .

The axes of one end portion 54 and the other end portion 56 of each rotating element 40 are the same as the two axes of the reduction shaft 48 and the bearing 38 , and the middle portion 58 deviates from these axes.

As shown in FIG. 2 , each crank rod 64 is pivotally connected to the middle part 58 by a bearing 66 at one end so that each crank rod 64 swings due to the rotation of the rotary element 40 . The rotary element 40 and the crank rod 64 are a crank mechanism that converts the rotary motion of the rotary drive source 42, more specifically, the reduction gear 44, into a linear reciprocating motion in the left and right directions.

As shown in FIGS. 3 and 4 , each heald frame 12 is supported by a respective support mechanism 68 , and is moved up and down by the rotary drive source 42 (in other words, the drive mechanism 14 ) of each heald frame 12 by the support mechanism 68 . In this way, warp openings are formed.

Each supporting mechanism 68 has a pair of left and right rockers 70 and a connecting rod 72 interconnecting the two rockers 70 . The two rockers 70 are arranged at a distance from each other in the weaving direction, and can swing around the axis of the support shaft 74 extending in the front-back direction. Each support mechanism 68 is disposed below the corresponding heald frame 12 .

As shown in FIG. 3 , when viewed from the front, the front side wall 26 on the left side has four rockers 70 corresponding to the four rotational driving sources 42 . As shown in FIG. 4 , viewed from the front, the front side wall 28 on the right side has four rockers 70 corresponding to the four rotational driving sources 42 .

Each rocker 70 can swing in the plane extending in the up-down direction and the left-right direction, and is supported by a common support shaft 74 by a plurality of support mechanisms 68 at the base and branch of the V-shape. The two support shafts 74 are provided between the loom frames 18 and 20 at a distance from each other in the weaving direction (left-right direction), and extend in the front-back direction. Each supporting shaft 74 utilizes a pair of lower brackets 77, 77 (referring to FIG. 1 ) mounted on the bottom between the loom frames 18 and 20 and brackets 76, 76 (referring to FIG. 1 ) assembled therein that cannot be moved relative to each other. On loom frame 18 and 20.

The two rockers 70 of each supporting mechanism 68 are pivotally connected to the connecting rod 72 at one arm, and pivotally connected to the supporting body 78 at the other arm. Each support 78 connecting the rocker 70 to the heald frame 12 is a connecting rod with one end of a screw screwed into a screw hole in a long nut.

Each supporting mechanism 68 receives the reciprocating motion transformed by the rotating element 40 and the crank rod 64 at the rocker 70 on the side (left or right) close to the corresponding driving mechanism 14 . In this way, the two rocking bars 70 shake synchronously, and the two supporting bodies 78 move up and down synchronously.

Specifically, the rocker 70 on the left side of FIG. 3 and the rocker 70 on the right side of FIG. The other end of the crank rod 64.

The rocking angle range (stroke amount) of the rocker 70 can be adjusted according to changing the assembly position of the crank rod 64 assembled to the arm portion 80 .

As shown in FIG. 1 , the 16 heald frames 12 can be divided into 4 heald frame groups, and each heald frame group includes 4 adjacent heald frames 12 . Each heald frame group is called first, second, third and fourth heald frame group sequentially from the front side (cloth opening side) in the front-rear direction.

Each heald frame 12 of the first, second, third and fourth heald frame groups corresponds to the front side wall 28 of the shedding device frame 24, the front side wall 26 of the shedding device frame 22, and the rear side wall 32 of the shedding device frame 24 respectively And the rotary driving source 42 that the rear side wall 30 of the opening device frame 22 has.

Therefore, the several driving mechanisms 14 that the front side wall 28 has correspond to the heald frames 12 of the first heald frame group (that is, the heald frame 12 near the front side arm 28 and the adjacent and continuous three heald frames 12, that is to say , when sequentially numbering 1, 2, ... with respect to the heald frames from front to back, numbers are 4 heald frames 12 from 1 to 4).

The several driving mechanisms 14 that the front side arm 26 has correspond to the heald frames 12 of the second heald frame group (that is, the heald frame 12 adjacent to the rearmost end of the first heald frame group and the adjacent and continuous 3 heald frames 12, That is, 4 heald frames 12 with numbers 5 to 8).

The several drive mechanisms 14 that the rear side arm 30 has correspond to the heald frames 12 of the third heald frame group (that is, the heald frame 12 adjacent to the rearmost end of the second heald frame group and the adjacent and continuous 3 heald frames 2, That is to say, numbered 4 heald frames 12) from 9 to 12).

The several driving mechanisms 14 that the rear side arm 32 has correspond to the heald frames 12 of the fourth heald frame group (that is, the heald frame 12 adjacent to the rearmost end of the third heald frame group and the adjacent and continuous 3 heald frames 12, That is to say, numbered 4 heald frames 12) from 13 to 16).

As shown in FIG. 4, the heald frames 12 of the first and third heald frame groups are respectively in the order of approaching the front side arm 28 and the rear side arm 32, and are connected with the front side arm 28 and the rear side arm 32 from the front of the front and rear directions. The rotation drive source 42 that is provided in the lower left, lower right, upper left, and upper right as viewed in the direction is connected.

Specifically, the four drive mechanisms 14 (that is, the drive mechanisms corresponding to the first heald frame group) that are located on the right front side arm 28 correspond to the heddle numbered 1 at the front end (the side closest to the weaving mouth). Frame 12 and a total of 4 heald frames 12 of adjacent and consecutive numbers 2 to 4; and 4 driving mechanisms 14 (that is, corresponding to the driving mechanism of the second heald frame group) on the left front side arm 26 ) corresponds to the heald frame 12 numbered 5 adjacent to the heald frame 12 numbered 4 at the rear end corresponding to the right front side wall 28 and a total of 4 heald frames 12 adjacent to and consecutively numbered 6 to 8 .

The four driving mechanisms 14 (that is, the driving mechanism corresponding to the third heald frame group) arranged on the right rear side arm 32 correspond to the heald frames 12 corresponding to the number 8 at the rear end of the left front side wall 26 The numbering is 9 heald frames 12 and a total of 4 heald frames 12 adjacent to and consecutively numbered 10 to 12; 4 driving mechanisms 14 (that is, corresponding to the fourth heald frame) on the left rear side arm 30 The driving mechanism of the frame group) corresponds to the heald frame 13 with the number 5 adjacent to the heald frame 12 corresponding to the rearmost end of the right rear side wall 32 and numbered 12 and the total number of adjacent and continuous numbers 14 to 16 4 heald frames 12.

So, for example: the distance L between the heald frame 12 numbered 4 at the rear end of the first heald frame group and the heald frame 12 numbered 9 at the rear end of the third heald frame group is the same as the distance L between the heald frame 12 numbered 5 to 8 in the second heald frame group The thickness dimension of each heald frame 12 is the same as or larger than it. The middle portion 58 of the rotating member 40 is located in the left-right direction of the corresponding heald frame 12 (refer to FIG. 1 ), so the bearing 38 supporting the rotating member 40 is not located in the left-right direction of the heald frame 12, but is located on the hollow portion side of the shedding device frame 22. (That is, the side opposite to the drive mechanism 14).

The positions of the bearings 38 corresponding to the heald frames 12 numbered 4 and 9 are on the imaginary plane extending from the heald frame 12 numbered 4 in the up-down direction and left-right direction and the imaginary plane extending from the heald frame 12 numbered 9 in the up-down direction and left-right direction. between planes. Thus, the distance L is larger than the thickness dimension T in the front-rear direction of the support wall 34 supporting the bearings 38 corresponding to the heald frames 12 numbered 4 and 9 .

Now, consider a shedding device in which a heald frame 12 is assigned to each heald frame group, that is, the driving mechanism 14 corresponding to the heald frame 12 numbered 1, 2, 3, ... is assembled to the right side wall 28, the left front side wall 26, the right The opening device of the rear side wall 32, the left rear side wall 30, the right front side wall 28, . . . However, if the drive mechanism 14 is configured like this, for example, the support wall 36 of the bearing 38 corresponding to the heald frames 12 with numbers 1 and 3 must be arranged between the heald frames 12 with numbers 1 and 3 (that is, the arrangement of the heald frames 12). spacing). In addition, the thickness of the supporting walls 34, 36 or the bearing 38 must reach a certain value, so the arrangement distance of the heald frames 12 must be increased.

In the shedding device in which the heald frames 12 of each heald frame group are assigned to each of the side walls 26, 28, 30, 32 in order from the front side, the supporting wall is arranged in the hollow portion between the shedding device frames 22 and 24, correspondingly. The arrangement pitch of adjacent heald frames 12 is also larger than the arrangement pitch of the above-mentioned embodiment. Therefore, in such a shedding device, in order to ensure the transmission route of the warp necessary for weft insertion, the movement amount (the shedding amount) of the heald frame 12 farther away from the cloth fell must be larger. As a result, the warp threads corresponding to the heald frames 12 farther away from the cloth fell suffer greater damage than the warp threads corresponding to the heald frames 12 closer to the cloth fell. Such damage easily makes the loom stop, which reduces the working efficiency of the loom 16 and causes problems such as increased warp breaks.

In the shedding device 10 shown in FIG. 1 , four heald frames 12 correspond to the driving mechanism 14 on one side as a heald frame group. Like this, for example: bear the supporting wall 36 of the rotating element 40 that is located at the front side wall 28 and the rotating element 40 that is located at the rear side wall 32, is formed in the heald frame 12 that number is 5 and number is 8 corresponding from front side wall 26 , within the virtual arrangement interval extending in the up-down direction and in the left-right direction.

Therefore, the shedding device 10 can effectively utilize the space between the arrangement of the supporting walls 36 in the range where the arrangement pitch of the heald frames 12 is not increased compared with the arrangement pitch of the heald frames 12 in the shedding device in which one heald frame 12 is assigned to each heald frame group. , the size of the interval in the front-back direction can be shortened. Therefore, the shedding device 10 will not cause excessive loss to the warp yarns, will not reduce the working efficiency of the loom 16, and will not cause problems such as increased warp breakage. The rotating element 40 is supported on the shedding device frames 22, 24 in a two-point support manner on both sides of the middle part 58 that bears the reaction force from the heald frame 12, so that the rigidity of the driving mechanism 14 can be improved, and the shedding device 10 has no influence on The superiority of the vibration of the loom 16, etc.

The number of heald frames 12 corresponding to one side of the drive mechanism 14 is restricted by the relevant design of the heald frames 12, and in reality it is more than four. However, if the heald frame 12 is to be made thinner, it may be less than four. If the number of heald frames 12 is small and the length of the rotating element 40 in the direction of the rotating axis is relatively short, the bending of the rotating element 40 subjected to reaction forces such as warp tension can be reduced. In this way, the opening device 10 does not cause vibration due to the rotational movement of the rotating member 40 in the bent state, thereby realizing an opening movement with less vibration.

The drive mechanism 14 of the above-mentioned shedding device 10 is provided with a speed reducer 44 between the rotary drive source 42 and the heald frame 12, so avoiding the use of a high-torque and fast-response, expensive rotary drive source, thereby reducing the manufacturing cost of the loom 16. cost.

Each drive mechanism 14 receives the reaction force from the heald frame 12 on the intermediate portion 58 of the rotary element 40 . One end 54 and the other end 56 of the rotating element 40 of each driving mechanism 14 are supported on the opening device frame 22 or 24 in a two-point support manner by the speed reducer 44 and the bearing 38 on both sides of the middle portion 58 . In this way, the following advantages arise:

Improve the rigidity of the driving mechanism 14, without affecting the vibration of the loom 16, stable shedding motion can be implemented on the heald frame 12, and even if the speed reducer 44 is arranged between the rotary drive source 42 and the heald frame 12, the The force acting on the reduction shaft 48 of the speed reducer 44 is halved, prolonging the life of the internal bearing 38 of the speed reducer 44 .

The opening device 10 described above can be modified as follows.

The shedding device 10 shown in FIG. 5 has 24 heald frames 12 . The first, second, third and fourth heald frame groups all have 6 heald frames 12 . In FIG. 5 , three rotary drive sources 42 are disposed on the corresponding front and rear side walls 26 , 28 , 30 or 32 in two rows on the left and right, or in two rows on the top and bottom, and three rows on the left and right.

The rear sidewalls 30 and 32 of the opening device 10 respectively have a rotary driving source 42 . However, the number of heald frames is preferably 18 according to the weaving specification. In this case, the shedding device 10 can sequentially omit the heald frame 12 shown by the dotted line in FIG. 5 and the corresponding speed reducer 44 from the rear side.

Each rotational driving source 42 of the opening device 10 is arranged deviated from the front-rear direction relative to the rotational driving source 42 adjacent to the corresponding front-rear sidewall 26 , 28 , 30 or 32 . The front and rear side walls 26 and 30 and 28 and 32 opposite to each other are stepped in the front and rear directions as wide as the side walls near the loom frames 18 and 20 .

The opening device frames 22 and 24 may not be arranged on the outer sides of the loom frames 18 and 20, but may be arranged on any one of the loom frames.

Likewise, several drive mechanisms 14 may not be dispersedly disposed on the front and rear side walls 26 , 30 or 28 , 32 of the opening device frame 22 or 24 , but disposed on any one of the side walls.

For example, as shown in FIG. 9 , the speed reducer 44 can be assembled on the front side wall 28 and the rear side wall 32 of the opening device frame 24 located on the right side of the loom frame 20 . In this case, the bearing 38 that receives the rotating element 40 driven by the speed reducer 44 assembled on the front side wall 28 and the rear side wall 32 is disposed between the speed reducer 44 assembled on the front side wall 28 and the rear side wall 32 . On the opposite rear side wall 32 and the front side wall 28 . Thus, the rotating rotary element 40 is supported at two points on the side walls 28 , 32 by means of the bearings 38 .

The reducer 44 can be separately assembled to the front side walls 26 and 28 of the opening device frames 22 and 24 as shown in FIG. 6 , or can be separately assembled to the rear side walls 30 and 32 as shown in FIG. 7 .

As shown in FIG. 10 , the driving mechanism 14 arranged on the left side with respect to the loom frame 18 shown in FIG. 6 and the driving mechanism 14 arranged on the right side with respect to the loom frame 20 shown in FIG. 7 may be combined.

The shedding device frames 22, 24 can be installed above the loom frames 18, 20 as the overhead dobby device.

The number of heald frames 12 is not limited to 16, 18, 24, it can be more or less. The number of heald frames 12 is preferably in the range of 8 to 24. In this way, the number of speed reducers 44 installed on the front side walls 26, 28 and the rear side walls 30, 32 of the opening device frame also increases or decreases accordingly. Therefore, the number of speed reducers 44 corresponding to the number of heald frames 12 can be installed on the shedding device frames 22 and 24 .

The opening device frames 22, 24 are rectangular (box-shaped), but are not limited thereto. The front side walls 26, 28, the rear side walls 30, 32, and the support walls 34, 36 can be made as other components, and assembled integrally by using a fixing device.

In the figure, one bearing hole 62 receives the other end portions 56 of two rotating elements 40 adjacently arranged in the front-rear direction, but one bearing hole 62 may receive the other end portion 56 of one rotating element 40 .

Regarding the internal structure of the reduction gear 44, in the figure, the axis of the output shaft 50 and the axis of the reduction shaft 48 are parallel spur gears, but the two axes may cross to use a bevel gear.

As shown in FIG. 8(A) and FIG. 8(B), the rotating element 40 can fit the eccentric shaft 84 to the supporting shaft 82 . In FIG. 8 , one end portion 54 of the support shaft 82 is relatively non-rotatably assembled to the reduction shaft 48 . The other end portion 56 of the support shaft 82 is supported by the bearing 38 so as to be relatively non-rotatable.

In FIG. 8 , an eccentric shaft 84 is assembled to one end portion 54 and the other end portion 56 of the support shaft 82 in a relatively non-rotatable manner using a wedge 86 . The outer periphery of the eccentric shaft 84 is circular when viewed from the axial direction of the support shaft 82 . Therefore, the support shaft 82 and the integrally designed eccentric shaft 84 correspond to the rotary element 40 , and the eccentric shaft 84 corresponds to the intermediate portion 58 acting as an eccentric cam whose axis is eccentric with respect to the support shaft 82 . The outer periphery of the eccentric shaft 84 is fitted and connected to a hole formed at one end of the crank rod 64 .

As shown in FIG. 8 , the support shaft 82 rotates, and the eccentric shaft 84 rotates around the support shaft 82 to make the crank rod 64 swing and reciprocate. As a mechanism for converting the rotational motion of the rotary element 40 into linear reciprocating motion, known mechanisms other than those shown in the drawings may be used.

The present invention is not limited to the above-described embodiments. As long as it does not deviate from the essence, various changes can be made.

Claims (13)

1. A shedding device of a loom, comprising a plurality of driving mechanisms corresponding to a plurality of heald frames, characterized in that: each driving mechanism includes a rotating drive source, a speed reducer, a bearing and a motion conversion mechanism; wherein the speed reducer and the rotating The output shaft of the driving source is connected, has a deceleration shaft driven by decelerating the rotation of the output shaft, and is installed on the shedding device frame; the bearing is arranged on the shedding device frame; the motion conversion mechanism has a rod and a rotating element connected to the heald frame, and The rotary motion of the reduction shaft can be transformed into the linear reciprocating motion of the rod by the rotary element; The rotating element includes one end connected to the reduction shaft, the other end supported by a bearing, and a middle part located between the one end and the other end and oscillatingly connected with the rod. 2. The shedding device of a loom according to claim 1, wherein the shedding device frame is arranged on an outer side of the heald frame in the direction of the weaving web, and has a side wall along the direction of the weaving web. Several rows are arranged on the side wall, the speed reducer is installed on the side wall, and the speed reduction shaft runs through the side wall. 3. A shedding device for a loom, which has several first driving mechanisms corresponding to several heald frames and several second driving mechanisms corresponding to other heald frames one-to-one, characterized in that each first driving mechanism includes The first rotary drive source, the first speed reducer, the first bearing and the first motion conversion mechanism; wherein the first speed reducer is connected with the first output shaft of the first rotary drive source, and has the function of using the rotation speed reduction of the first output shaft to drive The first reduction shaft is installed on the first shedding device frame; the first bearing is arranged on the first shedding device frame; the first motion conversion mechanism has a first rod connected with the heald frame and a first rotating element, and can The rotary motion of the first reduction shaft is converted into the linear reciprocating motion of the first rod by the first rotary element; each second drive mechanism includes a second rotary drive source, a second reducer, a second bearing, and a second motion conversion mechanism; wherein The second speed reducer is connected with the second output shaft of the second rotary drive source, has a second speed reduction shaft driven by the rotation reduction of the second output shaft, and is installed on the second opening device frame; the second bearing is arranged on the second On the frame of the shedding device; the second motion conversion mechanism has a second rod connected to the heald frame and a second rotating element, and can convert the rotating motion of the second deceleration shaft into the linear reciprocating motion of the second rod by using the second rotating element; The above-mentioned first rotating element includes a first one end connected to the first reduction shaft, a first other end supported by the first bearing, and a first rod located between the first one end and the first other end. The first intermediate part of the rocking connection; the above-mentioned second rotating element includes a second one end connected with the second reduction shaft, a second other end supported by the second bearing, and a second end located at the second one end and the second other end Between the parts, the second middle part connected with the second lever rockingly; The above-mentioned first and second opening device frames are respectively arranged on one outer side and the other outer side of the heald frame in the weaving direction, and respectively have first and second side walls along the weaving direction; The two rotary drive sources are respectively arranged in several rows on the first and second side walls of the first and second opening device frames; each first reducer and each second reducer are respectively installed on the first and second openings On the first and second side walls of the device frame; each first deceleration shaft and each second deceleration shaft correspond to the first and second side walls of the first and second opening device frames respectively. 4. The shedding device of the loom according to claim 3, characterized in that: the above-mentioned several first driving mechanisms correspond to the heald frames near the cloth fell side and the several adjacent and continuous heald frames; the several second driving mechanisms The mechanism corresponds to the heald frame adjacent to the last end of the continuous heald frame and several adjacent and continuous heald frames. 5. The shedding device of a loom according to claim 3, characterized in that: said shedding device may also include a number of third driving mechanisms corresponding to other heald frames; Each third drive mechanism includes a third rotary drive source, a third speed reducer, a third bearing and a third motion transformation mechanism; wherein the third speed reducer is connected to the third output shaft of the third rotary drive source, and has the ability to use the third output The third reduction shaft driven by the deceleration of the rotation of the shaft is installed on the first shedding device frame; the third bearing is arranged on the first shedding device frame; the third motion conversion mechanism has a third rod connected with the heald frame and a third a rotating element, and the rotating motion of the third reduction shaft can be transformed into the linear reciprocating motion of the third rod by the third rotating element; The third rotating element includes a third one end connected to the third reduction shaft, a third other end supported by a third bearing, and a third end located between the third one end and the third other end, which swings with the third rod Connected third middle section: The above-mentioned first opening device frame has a third side wall opposite to the first side wall and along the weaving direction, the third rotary driving source is arranged on the third side wall in several rows, and each third reducer is installed on the third side wall. On the side wall, each third reduction shaft runs through the third side wall. 6. The shedding device of the loom according to claim 5, characterized in that: several first driving mechanisms correspond to the first heald frame near the cloth fell side and several adjacent and continuous first heald frames; The second driving mechanism corresponds to the second heald frame adjacent to the rearmost end of the above-mentioned continuous first heald frame and the adjacent and continuous second heald frames; several third driving mechanisms correspond to the above-mentioned continuous second heald frames. The third heald frame adjacent to the last end of the heald frame and several third heald frames adjacent and continuous thereto. 7. The shedding device for a loom according to claim 5, wherein the first and third bearings are supported on the first shedding device frame by a common bearing support portion. 8. A shedding device for a loom, which has a number of first driving mechanisms corresponding to a number of heald frames and a number of second driving mechanisms corresponding to a number of heald frames, wherein each first driving mechanism includes a first driving mechanism A rotary drive source, a first reducer, a first bearing, and a first motion conversion mechanism; wherein the first reducer is connected to the first output shaft of the first rotary drive source, and has a second drive driven by rotation reduction of the first output shaft. A reduction shaft, which is installed on the frame of the shedding device; the first bearing is arranged on the frame of the shedding device; the first motion conversion mechanism has a first rod connected with the heald frame and a first rotating element, and can convert the first reduction shaft to The rotary motion is converted into the linear reciprocating motion of the first rod by the first rotary element; each second drive mechanism includes a second rotary drive source, a second speed reducer, a second bearing and a second motion conversion mechanism; wherein the second speed reducer and The second output shaft of the second rotary drive source is connected, has a second reduction shaft driven by the rotation deceleration of the second output shaft, and is installed on the frame of the opening device; the second bearing is arranged on the frame of the opening device; the second motion conversion The mechanism has a second rod connected to the heald frame and a second rotating element, and can convert the rotating motion of the second reduction shaft into the linear reciprocating motion of the second rod by using the second rotating element; The first rotating element includes a first one end connected to the first reduction shaft, a first other end supported by a first bearing, and a first end located between the first one end and the first other end, and swings with the first rod The first intermediate part connected; the second rotating element includes a second one end connected to the second reduction shaft, a second other end supported by the second bearing, and a second end located between the second one end and the second other end Between, the second middle part connected with the second rod rocking; The shedding device frame is arranged on an outer side of the heald frame in the weaving direction, and has first and second side walls opposite to each other in the front and back direction and along the weaving direction. A plurality of columns are correspondingly arranged on the first and second side walls, each first reducer and each second reducer are respectively installed on the first and second side walls, each first reduction shaft and each second reduction shaft are respectively Correspondingly through the first and second side walls. 9. The shedding device of the loom according to claim 8, characterized in that: the above-mentioned several first driving mechanisms correspond to the heald frames near the cloth fell side and the adjacent and continuous several heald frames; the several second driving mechanisms The mechanism corresponds to the heald frame adjacent to the last end of the continuous heald frame and several adjacent and continuous heald frames. 10. The shedding device for a loom according to claim 8, wherein the first and second bearings are supported on the shedding device frame by a common bearing support portion. 11. The shedding device for a loom according to any one of claims 1 to 10, characterized in that: the axis of each deceleration shaft is parallel to the axis of the output shaft of the corresponding rotary drive source. 12. The shedding device of a loom according to any one of claims 1 to 10, characterized in that: the output shafts and bearing axes of the above-mentioned rotary driving sources and corresponding bearings are set to be common, and the middle parts of each The axes are offset relative to the common axis. 13. The shedding device of a loom according to any one of claims 1 to 10, characterized in that each of the above-mentioned rotating elements is slightly circular when viewed from the direction of the rotation axis, and can be used as an eccentric cam connected eccentrically in the middle.

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