JPH0967735A - Harness frame-combining machine in loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the breakage of a harness frame and the occurrence of warp breakage by stabilizing the connection of a harness frame lowered fitting in a loom. SOLUTION: First connection member 27 on a harness frame 1 side is vertically connected with second connecting member 2 provided at a top end of a pushing-up member 2 in an opening mechanism through a lock mechanism. In this case, a swing piece 13 rockably provided on one of the connection members and having an arc groove 29 or a projection is provided in the lock mechanism, and correspondingly to the piece, a projection 17 hooking to or separating from the arc groove 29 or another arc groove 29 hooking to or separating from the projection is formed on another connecting member, and in any case, the arc groove is extended in a direction crossing to the connecting direction and its center of curvature coincides with a rocking shaft 5. By an opening motion, as a vertical force acting on a connecting device directs in a direction crossing to the arc groove 29, the force acts so as to keep the engaging of the arc groove 29 with the projection 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heald frame connecting device for a loom, and more specifically, a first connecting member on the side of the heald frame and a second connecting member provided at an upper end of a lifting member of an opening mechanism. The present invention relates to an improvement in a heddle frame connection technique of a method of vertically connecting via a heald.

[0002]

2. Description of the Related Art Generally, in order to connect a heddle frame and an opening mechanism to each other, a descending mounting type connecting device as described above is used in order to speed up and facilitate a mounting operation. As a specific example thereof, the one proposed in JP-A-3-45739 is known. In this conventional technique, a notch is formed on the side surface of the connecting member on the side of the heald frame, and the connecting member provided at the upper end of the pushing-up member of the opening mechanism is shaken in a direction intersecting with the connecting direction. A moving wedge-shaped protrusion is provided. At the time of connecting the two connecting members, the projection is swung by the driving member to be engaged with the notch to maintain the connected state of the both connecting members.

[0003]

However, in the structure of the prior art as described above, since the area of the engaging portion is very small and the engaging state is weak, the vigorous shedding motion of the loom exerts a strong vertical force on the coupling device. Is continuously applied, it is very difficult for the engaging portion to be applied, and it becomes difficult to stably maintain the connected state. Moreover, when the wedge-shaped projection is engaged with the side surface of the connecting member as described above,
The vertical force acting on the connecting device due to the opening movement acts in the direction of disengaging the notch and the projection at the engaging portion. For this reason, as the opening moves, the engaging portion constantly vibrates and tends to be disengaged, and the vibration causes wear on the engaging portion, resulting in looseness in the connection of the two connecting members. As a result, the connecting members collide with each other and are damaged, or the connecting members are disconnected to cause an accident such as damage of the heddle frame or warp breakage.

In view of the circumstances of the prior art, an object of the present invention is to stabilize the heddle frame lowering mounting type connection and thereby prevent damage to the heddle frame and warp breakage.

[0005]

Therefore, according to the present invention, the locking mechanism is provided on one of the connecting members and is formed on the swinging piece having the arcuate groove or projection and the other connecting member. It is composed of a projection corresponding to the circular arc groove or a circular arc groove corresponding to the above-mentioned projection, and in any case, the circular arc groove is extended so as to intersect with the connecting direction, and the center of curvature thereof when the both connecting members are fitted. It is provided so as to coincide with the swing center of the swing member, and the projection is arranged on an arc having the same curvature as the arc groove and the center of curvature when the two connecting members are fitted to each other and the curvature center of the arc groove. Is the gist.

[0006]

The vertical force acting on the connecting device due to the opening movement is directed in the direction intersecting the arc groove, so that the engagement between the arc groove and the protrusion is maintained.

[0007]

1 to 8 show a first embodiment of a connecting device of the present invention in which a second connecting member on the push-up member side is used as one connecting member and another connecting member is used as the other connecting member. The first connecting member on the side of the heald frame is used, and further, a swinging piece having a protrusion is provided on the first connecting member, and an arc groove corresponding to the protrusion is formed on the second connecting member. Then, the lock mechanism is configured.

As shown in FIG. 1, the first connecting member 27 is attached to the lower end of the heald frame 1, and the second connecting member 3 is attached.
Is provided on the upper end of the push-up member 2 of the opening mechanism, and the second
A swinging piece 13 is attached to the connecting member 3 of FIG.

In FIG. 4, the second connecting member 3 has a pivot 5 on the front surface of the upper and lower substantially central portions thereof, and the axis of the pivot 5 forms the swing center of a swing piece described later. In addition, on the front surface of the second connecting member 3, a guide groove 11 in an arc having the above-mentioned swing center as a center of curvature is vertically arranged so as to sandwich the pivot 5.
7 are formed. Further, the second connecting member 3 is provided with stoppers for receiving the first connecting member 27 on both side surfaces below the pivot 5, and a spring seat 9 is formed on one side end of the lower end portion. There is.

In FIG. 5, the oscillating piece 13 has a through hole 15 in the front-rear direction at the center thereof and can be pivotally attached to the pivot 5 on the second connecting member 3. The upper part of the rocking piece 13 spreads upward in a fan shape, and a pair of protrusions 17 are formed near the left and right end portions of the back surface of the upper end thereof. In the illustrated example, the protrusion 17 is formed in an arc shape having the center of the through hole 15 as the center of curvature. In this case, since the rocking piece 13 is pivotally attached to the pivot 5 on the second connecting member 3, the center of curvature of the arc-shaped projection 17 coincides with the axis of the pivot 5, that is, the center of rocking. It will be. Further, on the back surface of the rocking piece 13, a pair of guide ridges 19 and 21 having the rocking center as the center of curvature is formed above and below the through hole 15 as in the above. In the vicinity of the lower guide ridge 21, the second
Of the spring seat 23 on the same side as the spring seat 9 on the connecting member 3 of FIG.
Are formed.

2 and 3, the upper front surface of the first connecting member 27 has the same curvature as the arcuate projection, and the center of curvature thereof coincides with the swing center when the connecting members 27 and 3 are connected. The arcuate groove 29 is formed so as to extend in a direction intersecting with the connecting direction. Further, a concave portion 31 which can be fitted with the second connecting member 3 is formed in the center of the front surface below the same. The cover 4 is attached to the front surface of the first connecting member 27 as shown in FIG.

Further, FIG. 2 shows a state in which the second connecting member 3 and the swinging piece 13 are assembled. The swing piece 13 is swingably attached to the pivot 5 on the second connecting member via the through hole 15. Further, the guide ridges 19 and 21 on the back surface of the swinging piece 13 are the guide grooves 11 on the front surface of the second connecting member 3,
7 and the rocking piece 13 is rocked stably. Further, a tension spring 25 is interposed between the spring seat 23 on the swing piece 13 and the spring seat 9 on the second connecting member 3.

When connecting the heald frame 1 to the push-up member 2 of the opening mechanism, first, with the connecting members 27 and 3 facing each other vertically, as shown in FIG. The moving piece 13 is swung by applying a force against the spring force so that the protrusion 17 on the swinging piece 13 is positioned above the first connecting member 27 so as not to interfere with the mounting. Next, the heddle frame 1 is lowered to a position where the side bottom surface of the first connecting member 27 comes into contact with the stopper, and the second connecting member 3 is fitted into the concave portion of the first connecting member 27 as shown in FIG. It will be in a state of In this state, the circular arc groove 2 of the first connecting member 27 is
Since the center of curvature of 9 and the center of curvature of the projection 17 on the circular arc on the rocking piece 3, that is, the center of rocking, coincide with each other, the circular groove 29 and the projection 17 are aligned with each other. Therefore, when the force acting on the rocking piece 13 is released, the rocking piece 13 rocks in the opposite direction by the spring force of the tension spring 25, and as shown in FIG. 1
7 enters the circular arc groove 29 of the first connecting member 27 and engages with each other, and the connecting members 27 and 3 are in a connected state. Thus, the two connecting members 27 and 3 have the arcuate groove 29 and the projection 1 extending through the swinging piece 13 in the direction intersecting the direction of the vertical opening movement.
Since they are connected by 7, the connecting state between both connecting members 27 and 3 becomes very firm and stable.

When releasing the connected state, the connecting device may be operated in the same procedure as described above. That is, the swinging piece 13 in the state shown in FIG. 6 is swung in the direction against the spring force to obtain the state shown in FIG. As a result, the protrusion 17 on the swing piece 13 and the first connecting member 27 are disengaged, and the first connecting member 27 can be detached from the second connecting member 3, so that the heddle frame 1 is moved upward. By doing so, the connection between both connecting members 27 and 3 is released.

FIGS. 9 and 10 show a modified embodiment of the above, in which the circular arc groove 29 of the first connecting member 27 is shown.
The projection 17 on the rocking piece 13 that engages with the circular arc groove 2 when connected
It is formed continuously so as to extend over the entire width direction of 9, and also extends downward so as to also serve as a guide protrusion. Further, in order to reduce the weight, the swinging piece 13 is formed with a through hole 12 in the front-rear direction. Further, the second connecting member 3 is composed of the hook 14. Other configurations and operations are the same as those in the above embodiment.

In the case of this embodiment, the engagement area between the projection 17 and the groove 29 in the connected state is larger than that in the first embodiment, so that the connected state becomes more solid. However, in this case, in order to prevent the protrusions 17 from interfering with the device of the first connecting member 27 during the connecting work, the swinging piece is arranged so that the protrusions 17 are all retracted from the insertion path of the first connecting member 27. 13 must be rocked. Further, in this embodiment, since the hook 14 formed separately is used as the member for locking the tension spring, the structure of the second connecting member 3 is simple and easy to process.

The structure shown in FIG. 11 is substantially the same as the structure shown in FIG. 9, but a recess is provided on the side of the second connecting member 3 and the first connecting member 27 is fitted into this recess. It is like this. In the illustrated example, the configuration of each element of the device is simplified and miniaturized, and the weight is also lighter than that of FIG. 9.

The structure shown in FIG. 12 is almost the same as that shown in FIG. 11, but the operating lever 10 is formed so as to project from the swinging piece 13 on the side opposite to the spring seat 23. Swinging piece 13
If the operating lever 10 is used when swinging, the connection work becomes easy. Further, when such an operating lever 10 is provided, the connecting work can be automated by connecting an appropriate driving mechanism such as an actuator to the operating lever 10. Moreover, when automated in this way, it is possible to mount a plurality of heald frames at once. In this case, since the height of the heddle frame may be different, it is desirable that the operation lever 10 be long.

The embodiment shown in FIG. 13 is the same as that shown in FIG. 12 in principle, but a compression spring 26 for biasing is housed in the second connecting member 3 to make the entire structure compact. It is the one. That is, in the figure, the rocking piece 13 is formed in a substantially disc shape, and the curved groove 12 extending along the outer circumference of the rocking piece 13 is formed on the entire surface of the second connecting member 3. A pin 14 is provided on the outer circumference of the swing piece 13 so as to project into the curved groove 12. The compression spring 26 is housed in the curved groove 12, one end of which is locked to the groove end (that is, the second connecting member 3) and the other end of which is locked to the pin 14 (that is, the swing piece 13).

In each of the above embodiments, as shown in FIG. 1, since the push-up member 2 of the opening mechanism is connected to the lower end of the heald frame 1, the first connecting member 27 is connected to the heald frame 1. It is attached to the bottom edge. However, instead of this, in the case of the type of opening mechanism as shown in FIG. 15, the first connecting member is formed at the upper end of the side portion of the heddle frame 1, or a separate first connecting member is used as the heddle frame. It can be configured to be attached to the upper end of one side. The case where the separate first connecting member is used will be described below as an example.

16 and 17, the first connecting member 27 is formed with an engaging piece 33 extending downward, and the engaging piece 33 has a front surface on which the connecting members 27 and 3 are connected. A pair of upper and lower circular arc grooves 29 whose center of curvature coincides with the center of swing at the time of fitting are engraved and formed. Corresponding to this, the swing piece 13
A protrusion 17 having a similar curvature is formed on the back surface of the. As in the case of the above-mentioned embodiment, the operating lever 1 is attached to the swing piece 13.
0 is attached, and the biasing compression spring 26 is housed in the curved groove on the front surface of the second connecting member 3.

18 and 19 show a slight modification of the previous embodiment, in which an engaging piece 33 is formed so as to project laterally from the first connecting member 27. 19 and 20, the position of the operation lever 10 is slightly changed.

In each of the embodiments shown above, a protrusion is provided on the swinging piece side of the second connecting member, and an arc groove is provided on the first connecting member side so that they are separated from each other. However, the present invention is not limited to this, and for example, a circular arc groove may be provided on the swinging piece side and a projection may be provided on the first connecting member side to engage with and separate from the arc groove.

Further, the arrangement of the swinging pieces may be reversed. That is, the first connecting member on the heddle frame side is used as one connecting member, and a rocking piece having a protrusion is provided on the first connecting member, and the first connecting member on the push-up member side is used as the other connecting member. The arc groove is formed so as to be engaged with and disengaged from the protrusion. Of course, as in the case described above, the arrangement of the protrusion and the arc groove may be reversed.

In each of the above embodiments, the arcuate projection is formed to have a constant vertical width in the swinging direction, and the circular arc groove is also formed to have a vertical width corresponding thereto. . However, instead of this, by making the vertical width of the arc-shaped projection gradually decrease in the swinging direction, and making the arc groove also the vertical width corresponding to this, the engagement state of both can be improved. It will be solid and stable.

Furthermore, in all of the above embodiments, the projection has an arcuate shape having the same curvature as the arcuate groove, but instead of this, the curvature is the same as that of the arcuate groove and the center of curvature is the same when the two connecting members are fitted. It may be two or more circular or elliptical protrusions arranged on an arc that coincides with the center of curvature of the arc groove.

Further, in all of the above embodiments, the swing of the opening mechanism side is absorbed by the bending of the push-up member.
However, in this case, the lifting member and the coupling device are overloaded, so that an appropriate swinging mechanism may be attached to either the upper or lower end of the coupling device instead. In each of the above embodiments, if the fitting portion of each member is designed to have some play, the push-up member 2 can be allowed to swing within an allowable range of about ± 1.3 degrees. Furthermore, FIG.
It is also possible to provide a slight play for allowing the rocking of the push-up member in the fitting portion of both connecting members as shown in FIG.

[0028]

As described above, according to the present invention, the area of the engaging portion between the connecting member on the heald frame side and the connecting member on the opening mechanism side can be made large, and the engaging portion can be made up and down. Since it exists in the direction intersecting the direction of the force acting by the opening movement and on the left and right with respect to the center of the arc, even if a vertical force acts on the coupling device due to the opening movement, The escape can be prevented, and this engagement can be stably maintained. Therefore, the connected state of both the connecting members can be maintained in a solid and stable state, whereby the accident such as the damage of the connecting member and the heddle frame and the warp breakage can be effectively prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of the overall configuration around an embodiment of a connecting device of the present invention in a separated state.

FIG. 2 is a perspective view showing the configuration of the lock mechanism in a separated state.

FIG. 3 is a front view showing a configuration of a first connecting member in the lock mechanism in a separated state.

FIG. 4 is a perspective view showing the structure of the second connecting member of the same.

FIG. 5 is a front view showing the structure of the swing piece.

FIG. 6 is a front view showing the lock mechanism in an assembled state.

FIG. 7 is a front view showing the operation of the lock mechanism.

FIG. 8 is a partial cross-sectional side view showing the structure of the lock mechanism.

FIG. 9 is a front view showing another example of the lock mechanism.

FIG. 10 is a partial sectional side view of the same.

FIG. 11 is a front view showing still another example of the lock mechanism.

FIG. 12 is a front view showing still another example of the lock mechanism.

FIG. 13 is a front view showing still another example of the lock mechanism.

FIG. 14 is a front view showing an example in which play is provided in the fitting portion in the configuration of FIG. 13 to add a swing function.

FIG. 15 is a perspective view showing another example of the overall configuration around an embodiment of the coupling device of the present invention in a separated state.

FIG. 16 is a front view showing still another example of the lock mechanism.

FIG. 17 is a partial sectional side view of the same.

FIG. 18 is a front view showing still another example of the lock mechanism.

FIG. 19 is a partial cross-sectional side view thereof.

FIG. 20 is a front view showing still another example of the lock mechanism.

FIG. 21 is a partial cross-sectional side view thereof.

[Explanation of symbols]

 1: heald frame 2: push-up member 3: second connecting member 13: swinging piece 17: protrusion 25: tension spring 26: compression spring 27: first connecting member 29: arc groove

Claims (3)

[Claims] 1. A first connecting member on the side of a heddle frame and a second connecting member provided on the upper end of a push-up member of an opening mechanism are fitted vertically and the fitting state is fixed by a locking mechanism to connect the two. In a form in which the members are in a connected state, the locking mechanism corresponds to the rocking piece provided on one of the connecting members and having the arc groove or the projection, and the above-mentioned arc groove formed on the other connecting member. A protrusion or an arc groove corresponding to the protrusion, and in any case, the arc groove extends in a direction intersecting the connecting direction, and the center of curvature of the swing member swings when both connecting members are fitted together. It is provided so as to coincide with the center, and the protrusion has the same curvature as the arc groove, and is arranged on an arc whose center of curvature coincides with the center of curvature of the arc groove when both connecting members are fitted together. A heddle frame connecting member in a loom, characterized by: 2. The one connecting member is the first connecting member on the heald frame side, and the other connecting member is the second connecting member on the push-up member side. Equipment. 3. One of the connecting members is a second member on the push-up member side.
2. The device according to claim 1, wherein the second connecting member is the first connecting member on the heald frame side.