JPH10130985A - Opening apparatus in weaving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To firmly support a power shaft for driving a heddle frame while controlling increase in an installation space for a driving mechanism of the heddle frame independent from a weaving machine driving motor. SOLUTION: Opening driving motors 54, 61, 62 and 69 for driving a heddle frame are opposingly mounted on a front wall 341 and a rear wall 342 of a driving box 34. A pair of supporting walls 70 and 71 are installed in the central part at the front and the rear of the driving box 34. The tip parts of power shafts 73 and 74 of the opening driving motors 54 and 62 are held by the supporting wall 70. The tip parts of power shafts 81 and 88 of the opening driving motors 61 and 69 are held by the supporting wall 71.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening device for a loom.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 7-324247 discloses an opening device in which one heald frame and one dedicated drive motor are connected one-to-one, and a plurality of heald frames are separately driven by a dedicated motor. It has been disclosed. In this conventional device, one object is to increase the number of heald frames while suppressing an increase in the space for disposing the heald frame driving mechanism. As one embodiment for this purpose, a plurality of heald frame driving devices are used. The drive motors are opposed to each other in two groups. The output shaft of each drive motor is parallel to the support shaft arranged along the arrangement direction of the heald frame, and the drive gear fixed to each output shaft meshes with the driven gear arranged on the support shaft. ing. One driven gear corresponds to one heald frame, and one drive motor corresponds to one driven gear. The drive motors are arranged in an arc around the support shaft, and such an arrangement of the drive motors makes it possible to increase the number of heald frames while suppressing an increase in space for disposing the drive mechanism of the heald frames. I do.

[0003]

Since the output shaft of the drive motor receives a driving reaction force from the meshing position between the driven gear and the drive gear, a mechanism for firmly supporting the output shaft is required. The drive motor is attached to a support member that supports both ends of the support shaft, and the length of the output shaft of the drive motor varies depending on the position of the corresponding driven gear. for that reason,
Simply supporting the ends of the output shafts separately complicates the support mechanism, and makes it difficult to suppress an increase in the space for disposing the drive mechanism of the heald frame.

An object of the present invention is to provide an opening device capable of securely supporting an output shaft of a motor for driving a heald frame while suppressing an increase in space for disposing a heald frame driving mechanism.

[0005]

According to the present invention, a plurality of shedding drive motors for independently driving a heald frame independently of a loom drive motor are divided into two groups, one group and the other. And an output shaft of at least one aperture drive motor of the other group is made to correspond to an output shaft of one aperture drive motor of the one group. Was supported by a single bearing means.

When one bearing means supports the output shafts of a plurality of aperture drive motors, the arrangement space for a support mechanism for supporting all output shafts is such that one bearing means supports one output shaft. Less compared to

According to a second aspect of the present invention, a part of the output shafts of the one group and a part of the output shafts of the other group are supported by a first bearing means, and the remaining output shafts of the one group are supported. And the other output shaft of the other group is supported by second bearing means,
And the second bearing means are displaced in the axial direction of the output shaft.

The bearing means for supporting a pair of output shafts facing each other has a required thickness in the axial direction of the output shaft. A transmitting body on the output shaft for transmitting the rotation of the output shaft to the heald frame side cannot be arranged at a position where the bearing means is supported in the axial direction of the output shaft. If the first bearing means and the second bearing means are shifted in the axial direction by at least the thickness, the output shaft which cannot be arranged at the supporting position of one bearing means is supported by the other bearing means. It can be arranged at the same position as the support position when viewed in the axial direction above.

According to a third aspect of the present invention, the output shaft of one of the aperture drive motors of the one group is opposed to the output shaft of one of the aperture drive motors of the other group. Such an opposing configuration results in a simplified configuration of the bearing means.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 2, swing levers 13, 14 are provided inside left and right side frames 11, 12 of the loom.
Are rotatably supported. The swing of the swing lever 13 is transmitted to the swing lever 14 via the transmission rod 15, and the swing levers 13 and 14 swing in synchronization. Connecting rods 16 and 17 are attached to the swing levers 13 and 14 in an upright state. A plurality of heald frames 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32, 3
3 (16 sheets in this embodiment as shown in FIG. 1) are supported by a pair of connecting rods 16 and 17, respectively. The swinging of the swing levers 13 and 14 is performed by connecting the heddle frames 18 to 33 via the connecting rods 16 and 17.
Is converted to vertical movement.

As shown in FIG. 2, a drive box 34 is mounted on an outer surface of the side frame 11. As shown in FIG. 3, a support shaft 35 is installed and supported between a front wall 341 and a rear wall 342 of the drive box 34. A plurality of driven gears 36, 37, 38, 39, 4
0, 41, 42, 43, 44, 45, 46, 47, 4
8, 49, 50, 51 (the same number as the heald frames 18 to 33) are rotatably supported. An eccentric shaft 52 is formed integrally with each of the driven gears 36 to 51, and a crank rod 53 is fitted and connected to each eccentric shaft 52. The crank rod 53 is connected to the swing lever 13.

As shown in FIGS. 2 and 5, a front wall 341 of the drive box 34 has eight opening drive motors 54,5.
5, 56, 57, 58, 59, 60, 61 are attached. As shown in FIG. 4, eight opening drive motors 62, 63, 64, 6 are also provided on the rear wall 342 of the drive box 34.
5, 66, 67, 68, 69 are attached. The opening drive motors 54 to 61 are arranged in an arc around the support shaft 35, and the opening drive motors 62 are also arranged in an arc around the support shaft 35. Opening drive motor 54
-69 rotate only in one direction.

As shown in FIG. 3, a sub output shaft 94 is coupled to a main output shaft 93 of the opening drive motor 54 via a coupling 72, and a main output shaft 9 of the opening drive motor 62 is provided.
A sub-output shaft 96 is connected to 5 via a coupling 72. The main output shaft 93 and the sub output shaft 94 constitute an output shaft 73 of the opening drive motor 54, and the main output shaft 95 and the sub output shaft 96 constitute an output shaft 74 of the opening drive motor 62. The main output shaft 97 of the opening drive motor 61 has a sub output shaft 9
8 is coupled via a coupling 72, and a sub output shaft 100 is coupled to the main output shaft 99 of the opening drive motor 69 via the coupling 72. The main output shaft 97 and the sub output shaft 98 constitute an output shaft 81 of the opening drive motor 61, and the main output shaft 99 and the sub output shaft 100 constitute an output shaft 88 of the opening drive motor 69. Other opening drive motor 5
5 to 60, 63 to 68 output shafts 75, 76, 77, 7
8,79,80,82,83,84,85,86,87
Has a similar configuration. Main output shaft 93, 95, 97, 99
Are all the same length. The base ends of the output shafts 73, 75 to 81 are supported by a single auxiliary support wall 91,
The base ends of the output shafts 74, 82 to 88 are connected to a single auxiliary support wall 9.
2 supported.

The opening drive motors 54 to 69 are opposed to each other in one group (opening drive motors 54 to 61) on the front wall 341 side and another group (opening drive motors 62 to 69) on the rear wall 342 side. The output shafts 73, 75-81 of one group of opening drive motors 54-61 are connected to the other group of opening drive motors 62-61.
69 and one-to-one with output shafts 74, 82 to 88.

As shown in FIGS. 1 and 3, a pair of support walls 70 and 71 are disposed at the front and rear central portions of the drive box 34, respectively. The thickness of the support walls 70, 71 is
51, which is about twice the arrangement pitch of the support walls 70, 71.
Are shifted by the thickness of the support walls 70 and 71 in the axial direction of the support shaft 35.

As shown in FIG. 4, the support wall 70 is attached to the support shaft 35.
, And as shown in FIG.
1 is arranged above the support shaft 35. The support wall 70 is connected to output shafts 73, 75, 7 via bearings 701, 702.
6, 77 and the front ends of the output shafts 74, 82, 83, 84. The support wall 71 has bearings 711 and 712
Output shafts 78, 79, 80, 81 and output shaft 8
5,86,87,88 are supported.

Each output shaft 73-88 has a drive gear 731
741,751,761,771,781,791,8
01,811,821,831,841,851,86
1,871,881 are fixed. Drive gear 731
881 mesh with the driven gears 36-51 in a one-to-one relationship, and the rotation of the output shafts 73-88 of the respective opening drive motors 54-69 is controlled by the driven gears 36-51 via the drive gears 731-881.
51. The rotation of the driven gears 36 to 51 is converted into reciprocating motion of a crank rod 53 via an eccentric shaft 52, and the reciprocating motion of the crank rod 53 is
3 is converted into a vertical reciprocating motion of the heald frames 18 to 33. The warp T opens and closes by the vertical movement of the heald frames 18 to 33.

Loom drive motor 89 for rotating the loom
Is controlled by the loom control computer Co. The shedding drive motors 54 to 69 independent of the loom drive motor 89 are controlled by the shedding control computer C1. The shedding control computer C1 controls the operation of the shedding drive motors 54 to 69 based on a preset shedding pattern and angle information obtained from the rotary encoder 90 for detecting the loom rotation angle.

In the first embodiment, the following effects can be obtained. (1-1) The plurality of opening drive motors 54 to 69 for individually driving the heald frames 18 to 33 are individually opposed to one group on the front wall 341 side and the other group on the rear wall 342 side. I have.
Half the opening drive motors 54 to 57 of the one group
And output shafts 62, 82 to 8 of half-opening drive motors 62 to 65 of the other group.
4 are supported by a support wall 70 and a bearing 701 that constitute first bearing means. Further, the other half of the opening drive motors 58 to 6 of the one group
The distal ends of the output shafts 78 to 81 and the output shafts 85 to 88 of the other half of the opening drive motors 66 to 69 of the other group are formed by a support wall 71 and a bearing 711 constituting a second bearing means. Supported. Since one bearing means supports the output shafts of the plurality of aperture drive motors, the space for the support mechanism for supporting all output shafts is smaller than when only one output shaft is supported by one bearing means. And less. (1-2) The support wall 70 constituting the first bearing means and the second
The supporting wall 71 constituting the bearing means of the present invention is the supporting wall 70, 7
The output shafts 73 to 88 are displaced in the axial direction by one thickness. The rotation of the output shafts 73 to 88 is controlled by the heddle frame 18 to
The drive gears 731 to 881 serving as transmission bodies on the output shafts 73 to 88 for transmitting to the 33 side cannot be arranged at the support positions of the support walls 70 and 71. If the support wall 70 and the support wall 71 are displaced in the axial direction of the output shafts 73 to 88 by at least the aforementioned thickness, the drive gear that cannot be arranged at the support position of one of the support walls is supported by the other support wall 70. When viewed in the axial direction above, it can be arranged at the same position as the support position of the one support wall. Therefore, all drive gears 73
1 to 881 can be arranged at equal intervals in the axial direction of the output shafts 73 to 88, and the driven gears 36 to 51 on the support shaft 35 can also be arranged at equal intervals. Such an array configuration
The drive mechanism for driving the heald frames 18 to 33 is made compact. (1-3) The output shafts 73, 75-81 of the opening drive motors 54-61 of the one group and the output shafts 74, 82-88 of the opening drive motors 62-69 of the other group are coaxial. They are facing one to one above. According to such a facing configuration, only one support hole for fitting the bearings 701, 702, 711, and 712 for rotatably supporting the output shafts 73 to 88 is required for two output shafts. The configuration of the means is simplified. (1-4) There are 16 driven gears 36 to 51. Support wall 70
Is located at a position corresponding to the position of the ninth and tenth driven gears 44 and 45 counted from the front wall 341 side of the drive box 34, and the support wall 71 is positioned at the seventh position counted from the front wall 341 side of the drive box 34. And the eighth driven gears 42 and 43 are located at positions corresponding to the positions. In such an arrangement, the auxiliary output shaft 94 of the opening drive motors 54 to 57 and the auxiliary output shaft 100 of the opening drive motors 66 to 69 can have the same length, and the auxiliary output shaft 96 of the opening drive motors 58 to 61 and the opening The length of the auxiliary output shaft 98 of the drive motors 66 to 69 can be the same. Therefore, two types of sub output shafts having different lengths may be prepared as the sub output shafts 94, 96, 98, 100, and the number of types of parts may be reduced. Reducing the number of parts is advantageous in terms of cost. (1-5) Support wall 7 for supporting the same number of output shafts 73 to 88
Numerals 0 and 71 have the same shape and the same size arranged vertically symmetrically. Therefore, only one type of support wall may be prepared as the support walls 70 and 71, and the number of component types may be reduced.

Next, a second embodiment shown in FIG. 6 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. In this embodiment, the auxiliary support walls 91 and 92 in the first embodiment are omitted. The output shafts 73 and 74 of the opening drive motors 54 and 62 are supported by the support wall 7.
If only the support by 0, 71 is sufficient, the output shaft 73,
No support on the proximal side of 74 is required, and the support configuration is firstly simpler than in the embodiment.

Next, FIG. 7 and FIGS.
An embodiment will be described. The same components as those in the first embodiment are denoted by the same reference numerals. In this embodiment, a pair of support walls 101 and 102 support output shafts 73 to 88 at front and rear central portions of the drive box 34. Support wall 10
The output shafts 1 and 102 have different shapes, but the sub-output shafts 103 of the output shafts 73 to 88 have the same length. Therefore, the auxiliary output shaft 10
As 3, only one type of auxiliary output shaft may be prepared, and the number of component types may be small.

Next, a fourth embodiment shown in FIG. 9 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. In this embodiment, a plurality of sector gears 10
4 (eight in the illustrated example) are rotatably supported on a support shaft 35. Each sector gear 104 has a drive gear 107 on an output shaft 106 of an opening drive motor 105 which is driven reciprocally.
Is fixed. The driving gear 107 is the sector gear 10
4 and the sector gear 104 is reciprocated by the opening drive motor 105. Sector gear 104
Is transmitted to the heald frame via the connecting rod 108.

The output shaft 106 of the opening drive motor 105 on the front wall 341 and the output shaft 106 of the opening drive motor 105 on the rear wall 342 face one-to-one. It is supported by support walls 109 and 110. The support walls 109 and 110 are shifted at least by their thickness in the axial direction of the output shaft 106.

In this embodiment, the same effects as those of the items (1-2) and (1-3) in the first embodiment can be obtained.

[0026]

As described above in detail, according to the present invention, a plurality of aperture driving motors are divided into two groups, one group is opposed to the other group, and one aperture driving motor of the one group is driven. Since the output shaft of the motor corresponds to the output shaft of at least one aperture drive motor of the other group, and the tip end of the output shaft of the corresponding combination is supported by a single bearing means, the driving of the heald frame is performed. An excellent effect is obtained in that the output shaft of the motor driving the heald frame can be firmly supported while suppressing an increase in the arrangement space of the mechanism.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment.

FIG. 2 is a front view.

FIG. 3 is an enlarged side sectional view of a main part.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is an enlarged side sectional view of a main part showing a second embodiment.

FIG. 7 is an enlarged side sectional view of a main part showing a third embodiment.

FIG. 8A is a sectional view taken along line CC of FIG. 7; (B) is FIG.
FIG.

FIG. 9 is a cutaway perspective view of a main part showing a fourth embodiment.

[Explanation of symbols]

54 to 69: an opening drive motor; 70, a support wall constituting the first bearing means; 71, a support wall constituting the second bearing means; 73 to 88: an output shaft.

Claims (3)

[Claims] 1. An opening device for individually driving a heald frame by an opening drive motor independent of a loom drive motor, wherein the plurality of opening drive motors are divided into two groups, and one group and the other group are opposed to each other. At the same time, the output shaft of one of the aperture drive motors of the one group is made to correspond to the output shaft of at least one of the aperture drive motors of the other group. An opening device in a loom supported by one bearing means. 2. A part of the output shaft of the one group and a part of the output shaft of the other group are supported by first bearing means, and the output shaft of the remaining part of the one group and the output shaft of the other group are supported. Second output shaft
2. The shedding apparatus according to claim 1, wherein the first bearing means and the second bearing means are displaced in the axial direction of the output shaft. 3. The output shaft of one of the opening drive motors of the one group and the output shaft of one of the opening drive motors of the other group are opposed to each other. An opening device in a loom according to any one of the preceding claims.