JP3167943B2 - Cam opening device with positioning function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to positioning means for attaching a cam to a cam box in a predetermined phase when replacing a cam in a cam opening device of a loom.

[0002]

2. Description of the Related Art When changing the number of opening repeats or cams by changing the fabric structure, etc., it is necessary to attach a new cam body to the cam box and then adjust the phase of the main shaft of the loom and the newly installed cam body. It is. Conventionally, for the positioning work for this phase alignment, the cam body is mounted and fixed on a cam box, connected to the main shaft of the loom, and once rotated the main shaft of the loom, the reference position of the shedding device, for example, the middle leveling. State, or set to the closed state of all frames, then fix the heald frame in that state with appropriate means, temporarily disconnect the connection with the main shaft of the cam opening device, and adjust the phase of the main shaft corresponding to the reference position of the cam body. Until then, the main shaft of the loom was rotated and connected to the shedding device again by a series of work procedures.

[0003]

According to the above work, the work of fixing the shedding device is complicated, and the work of disconnecting the cam shaft from the main shaft of the loom, aligning the main shaft phase with the phase of the cam body, and reconnecting the cam shaft is required. It was cumbersome and took a lot of time. As described above, according to the conventional work, there are problems such as poor workability and time-consuming.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cam opening device for a loom, which simplifies the work of aligning the phase of the cam with the main shaft of the loom after a new cam is mounted.

[0005]

To achieve the above object, the present invention comprises a cam body and a cam box. The cam body is rotated in synchronization with a main shaft of a loom, and a shedding lever contacting the cam body is moved. In a cam opening device of a loom that swings and reciprocates a heald frame in a direction of an opening motion,
At least when the cam main body is mounted on the cam box, positioning means for incorporating the cam main body into the cam box in a state of a predetermined rotation phase is provided.

When the cam body is mounted on the cam box, the positioning means guides the cam body by a predetermined positioning element so as to match a cam phase corresponding to a predetermined phase of the main shaft of the loom. Attach to the box. Thereafter, the new cam body positioned is connected to the main shaft of the loom rotationally positioned at a predetermined phase, so that the phase of the main shaft of the loom and the newly mounted cam main body are in a state of coincidence. The movement and the opening movement are synchronized.

As described above, when the cam body is mounted on the cam box, the cam body can be mounted in a state where the phase of the cam body is simply and accurately matched with the predetermined phase of the main shaft of the loom by the positioning means. The phase of the cam body is determined while observing the height of the heald frame as in the related art, and the phase adjustment work of connecting the cam body to the main shaft of the loom becomes unnecessary, thereby saving labor. Therefore, the time required for the cam replacement time is reduced. If a sensor that detects the presence of the positioning element and outputs a signal that inhibits the rotation of the loom can be attached, the rotation of the loom can be prevented in the presence of the positioning element. To rotate the rotating machine element without damaging it.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an outline of a degaussing type cam opening device 1 as an example. In addition, the cam opening device 1 is not limited to the depolarizing type, but is also applicable to a positive type using a tappet (positive cam) or the like.

In FIG. 1, a plurality of heald frames 2 are supported by a frame guide (not shown) so as to be vertically movable while holding a plurality of healds 3. 5 and a plurality of springs 6 so as to be capable of opening movement. That is, the wire 4 is wound around the roller 5 at a fixed position,
One end is connected to the heald frame 2 by a connector 7, and the other end is connected to a plurality of springs 6 by a hook set 8.
Is connected to one end. The other end of the spring 6 is fixed to a loom frame (not shown) by a hook set 9.

Each lower end of the heald frame 2 is connected to a wire 10. That is, the wire 10 is fixed to the lower part of the heald frame 2 by the connector 11, is wound around a plurality of guide rolls 12, changes its direction, and is adjustable in position with respect to the shedding lever 13 inside the cam box 19. They are connected by a connector 14. Shedding levers 13 corresponding to the number of heald frames 2
Is rotatably supported with respect to the lever shaft 15,
Each of the cam balls 16 is in contact with the outer periphery of the corresponding cam 17.

The cams 17 are rotatably supported by a camshaft 18 with respect to a cam box 19, and the first gear 2 rotates integrally with the plurality of cams 17.
The first and second gears 22 are driven in synchronization with the rotation of the main shaft 20 of the loom. The main shaft 20 is driven by a driving motor 23 of the loom.

By rotating the plurality of cams 17,
The shedding lever 13 performs an oscillating motion to give the heald frame 2 a vertical motion for opening through the wire 10. At this time, the upper wire 4, the roller 5, and the spring 6 allow the heald frame 2 to move in the vertical direction.

[0013]

First Embodiment Next, FIGS. 2, 3 and 4 show a typical embodiment of a cam opening device 1 having a positioning function. The cam opening device 1 includes a cam body 24 and a cam box 19. The cam body 24 is assembled by the camshaft 18 and the cam boss 27. The camshaft 18 rides on a semicircular shaft receiver 28 formed at a position facing the cam box 19, and a shaft retainer 29.
And is fastened by fastening bolts 30. The cam boss 27 is cylindrical, and the camshaft 1 is formed by bearings 31 press-fitted at both ends of the inner periphery.
8 are rotatably supported with respect to a plurality of cams 17.
Are fixed together with the first gear 21 to the flange 33 of the cam boss 27 with four fixing bolts 25 and nuts 26 with a suitable spacer 32 interposed therebetween.

The cam 17 and the first gear 21
, Along with the second gear 22 and the like, change in the weaving structure,
It is installed so that it can be replaced according to the change in the number of repeats. On the other hand, rotation from the main shaft 20 of the loom is transmitted to a gear shaft 35 rotatably supported by a bearing 34 of the cam box 19. A split boss 60 that is split and fixed to the gear shaft 35 is fixed. The second gear 22 is fixed to the flange portion of the split boss 60 via a bolt 61, and the second gear 22 meshes with the first gear 21 at a predetermined gear ratio. In addition, a plurality of shedding levers 1
3 is rotatably supported by a bearing (not shown) with respect to a lever shaft 15 fixed inside the cam box 19.

The cam box 19 has a built-in leveling mechanism 37 inside. The leveling mechanism 37
A leveling shaft 38 having a leveling gear 36,
Two leveling gears 39 and a leveling arm 41
Assembled by Leveling shaft 38
Are rotatably supported by the cam box 19, and are connected to an external driving means (not shown) to rotate, thereby giving rotation to the two sector-shaped leveling gears 39 by the leveling gear 36. The two leveling gears 39 are rotatably supported by the lever shaft 15 while being connected to each other by the leveling arm 41.

First, an operation procedure when the cam 17 is replaced due to a type change or the like will be described in the following order. Prior to the device of the new cam body 24, an operation of removing the previous cam body 24 is performed. The leveling shaft 38 is rotated by an external driving means, and the leveling gear 39 is rotated.
3 is rotated clockwise in FIG. 3, and all the hedging frames 13 are rotated clockwise while the leveling arms 41 are in contact with the abutting portions 40 of the shedding levers 13. The cam ball 16 is separated from the outer periphery of the cam 17 at the same height, that is, at a predetermined leveling position. Thereby, the cam body (the cam 17, the camshaft 18, the first gear 21, the cam boss 27, etc.)
Are ready to be removed from the cam box 19.

Next, an operation of assembling a new cam body 24 is performed. First, the cam 17, the spacer 32, and the first gear 21 corresponding to the next weaving are assembled in advance to the cam boss 27 by bolts 25 and nuts 26 in accordance with settings described later. Thereafter, the camshaft 18 is inserted into the inner periphery of the bearing 31 provided inside the cam boss 27, and the new cam body 24 is completed.

Next, an operation of mounting the positioning element on the cam body 24 is performed. Here, in this specific example, the positioning means 42 as a main part of the present invention includes a positioning hole 43 provided in one shaft retainer 29 and a first gear 2.
1 and the positioning holes 4
In order to detect the insertion state of the positioning pin 45 into the positioning holes 45 and the positioning pins 45 that can be inserted into the positioning holes 43 and 44, the positioning pin 45 is constituted by, for example, a sensor 46 attached to the shaft receiver 28. The sensor 46 for detecting the positioning pin 45 may be a known sensor such as a contact detection type such as a limit switch or a non-contact detection type such as a proximity switch or a photoelectric sensor. In addition to the shaft receiver 28, for example, it may be mounted on the cam box 19, or may be mounted on a part that rotates integrally with the cam 17 or a part that is integrated with the cam box 19, and the mounting position is not particularly limited. That is, the sensor 46 and the mounting position of the sensor 46 are appropriately set and mounted according to the positioning element.

Next, an operation of mounting the positioning element to the cam body 24, that is, an operation of fixing the one shaft presser 29, which is the positioning means 42, to the cam body 24 is performed.
First, the camshaft 18 is positioned so as to fit into the concave portion of the shaft retainer 29, the positioning hole 43 provided in the shaft retainer 29 is matched with the positioning hole 44 provided in the first gear 21, and the positioning pin 45 is inserted. To fix the shaft retainer 29 to the first gear 21. As a result, the first gear 21, ie, the cam 17 integral therewith, and the shaft presser 29, ie, the cam box 1 integral therewith,
9 are positioned at a predetermined phase. The setting of the positioning means 42 (the phase of the cam box 19 with respect to the cam 17) depends on the position of the spindle 2 when the cam body 24 is mounted.
It is calculated based on the angle of 0 and the structure (number of repeats, shape) of the cam 17 and is set in advance. Of course, a plurality of positioning holes 43 and 44 may be provided in one or both of the shaft retainer 29 and the first gear 21, and one of them may be appropriately selected according to conditions.

When the number of repeats is changed, the second gear 22 is replaced in addition to these operations. The second gear is a first gear attached to the cam body 24 described above.
A gear corresponding to the gear 21 is attached.

In parallel with these operations, the main shaft 20 of the loom is
To set the angle of the main shaft 20 to the fixed phase of the cam 17, that is, the rotational position of the main shaft 20 set corresponding to the positioning element.

Next, the positioning element, that is, the fixed cam body 24 is mounted on the cam box 19. Cam body 24
As described above, the shaft retainer 29 is fixed in advance with a predetermined phase. The cam body 24 and the camshaft 18 integrated therewith are connected to the cam box 1.
9 on the shaft receiver 28. In this state, the shaft holder 29 is fixed to the cam box 19 by the bolt 30.
On top. Thereby, the cam 17 and the first gear 21 are attached to the cam box 19 under a predetermined rotation phase. The insertion of the positioning pin 45 is detected by the sensor 46, and the output signal of the sensor 46 disables the loom.

When the cam main body 24 is mounted on the cam box 19, the first gear 21 on the cam main body 24 side and the second gear 22 on the cam box 19 side can be adjusted if necessary. Configuration. For example, the bolt insertion hole of the second gear 22 is in the rotation direction (circumferential direction).
It is a long hole 62 whose position can be adjusted with respect to. On the other hand, the corresponding hole of the split boss 60 is a screw hole that can be fixed with a bolt. Accordingly, the bolt 61 is screwed into the screw hole of the split boss 60 with the bolt 61 passed through the insertion hole of the second gear 22. In parallel with the mounting of the cam body 24, the bolt 6
1 with the first gear 21 and the second gear 22
Is adjusted, and then the bolt 61 is tightened to
Split boss 60 fixed to the gear shaft 35
Fixed to. As described above, the cam main body 24 can be brought into a state in which it matches the phase corresponding to the main shaft 20. As described above, since the phases corresponding to the cam main body 24 and the main shaft 20 can be matched with the mounting of the cam main body 24, the workability is improved and the work time related to the cam replacement can be shortened. The position-adjustable long hole 62 may be provided not on the second gear 22 side but on the split boss 60 side, and a screw hole may be provided in the second gear 22. In addition, it is also possible to release the split fastening connection (not shown) between the split boss 60 and the gear shaft 35 to adjust the meshing.

Thereafter, the positioning pin 45 is removed to make the first gear 21 rotatable. Finally,
The leveling is released, that is, the external driving means is driven to rotate the leveling shaft 38 and the leveling gear 3
9 is rotated counterclockwise as shown in FIG. 3 to return the leveling arm 41 to the initial position, and to bring the cam ball 16 of the shedding lever 13 into contact with the outer peripheral surface of the new cam 17. In this way, the loom is ready for the new cam 1
7 enables continuous operation.

The positioning hole 44 is provided in the first gear 21.
However, if possible, other members such as the cam 17,
It may be provided on the cam boss 27 or the like. In addition, positioning holes 4
Reference numeral 3 is not limited to the shaft presser 29, and may be provided on the cam box 19, the portion of the shaft receiver 28 integrated therewith, or another member attached to the cam box 19. Further, the positioning holes 43 and 44 are not limited to round holes, but may be formed of holes of other shapes or screw holes. In this case, the positioning pin 45 is formed of a material corresponding to the shape of the holes, screws, and the like. Further, the fixing between the shaft retainer 29 and the cam main body 24 may be performed using, for example, a magnet or a holding member, without using the positioning pin 45.

[0026]

Second Embodiment In the embodiment shown in FIG. 5, an axial recess 47 is formed at the end of the cam boss 27 where the first gear 21 is not provided, and the cam boss 27 is positioned at a predetermined angle with respect to the cam box 19. This is an example in which the cam boss 27 is brought into a predetermined phase with respect to the positioning member 49, that is, the cam box 19, by fitting the projection 48 of the positioning member 49 to be fitted. The positioning member 49 is fixed to the cam box 19 by, for example, bolts 50. In the case of this specific example, the cam body 24 is mounted while the positioning member 49 is being adjusted to a predetermined position, or after the cam body 24 is mounted, the positioning member 49 is mounted on the cam boss 27 and the positioning member 49 is mounted on the cam box 19. To a predetermined position. After the replacement, the positioning member 49 is removed from the cam box 19. Alternatively, the cam boss 27 may be configured as a convex portion and the positioning member 49 may be configured as a concave portion. In addition to fixing the positioning member 49 by the bolt 50, for example, the cam box 1 is fixed.
9, a positioning member 49 is provided by a projection (not shown) provided on the inner wall.
It is also conceivable that the positioning member 49 is guided and fixed using known means that is easy to attach and detach, and the configuration is not particularly limited.

[0027]

Third Embodiment In the embodiment shown in FIG. 6, similarly to the second embodiment, a portion of the cam boss 27 is cut off at the end of the cam boss 27, or another member is attached to the cam boss 27, and positioning is performed. A flat surface 51 is formed, and the flat surface 51 is fixed to the cam box 19 by, for example, a magnet.
This is an example of positioning by contacting the positioning flat surface 52 of FIG.

[0028]

[Fourth Specific Example] Further, the specific example of FIG.
Of a plurality of marks 55 on the cam box 19 side
This is an example in which positioning is performed by matching one with another. In this case, the positioning means 42 includes the two positioning inscriptions 54,
55. In this example, there is no need to provide a dedicated positioning member, and the number of mechanical components can be reduced.

[0029]

According to the present invention, when the cam body is mounted on the cam box, the cam body can be mounted in a state where the phase of the cam body is matched with the phase corresponding to the main shaft of the loom by the positioning means. In addition, after the mounting of the cam main body as in the related art, the phase adjusting operation for adjusting the phases of the main shaft of the loom and the cam main body is not required, and labor is saved. As a result, the time required for replacing the cam is reduced. In addition, since rotation of the loom in the presence of the attached positioning means can be prevented, the loom can be prevented from being accidentally rotated by forgetting to remove the positioning member, and the rotating member is not damaged.

[Brief description of the drawings]

FIG. 1 is a skeleton diagram of a cam opening device.

FIG. 2 is an enlarged plan view of a main part of the cam opening device.

FIG. 3 is an enlarged front view of a main part of the cam opening device.

FIG. 4 is a side view of a positioning means as a main part of the invention.

FIG. 5 is a side view of a positioning means as a main part of the invention.

FIG. 6 is a side view of a positioning means as a main part of the invention.

FIG. 7 is a side view of a positioning means as a main part of the invention.

[Explanation of symbols]

 Reference Signs List 1 cam opening device 2 heald frame 13 shedding lever 17 cam 18 cam shaft 19 cam box 20 main shaft 21 first gear 22 second gear 24 cam body 27 cam boss 28 shaft receiver 29 shaft presser 42 positioning means 43 positioning hole 44 positioning Hole 45 Positioning pin 46 Sensor 47 Concave part 48 Convex part 49 Positioning member 51 Positioning flat surface 52 Positioning flat surface 53 Positioning body 54 Positioning stamp 55 Positioning stamp 55

Claims (6)

(57) [Claims] 1. A cam body (24) and a cam box (1).
9), the cam body (24) is rotated in synchronization with the main shaft (20) of the loom, and the shedding lever (13) abutting on the cam body (24) is oscillated. In the cam opening device (1) of a loom for reciprocatingly driving the frame (2) in the direction of the opening motion, at least when the cam body (24) is mounted on the cam box (19), the cam body (24) is rotated at a predetermined rotational phase. A cam opening device (1) having a positioning function, comprising a positioning means (42) to be incorporated in the cam box (19) in the state of (1). 2. The method according to claim 1, wherein the positioning means is provided with a cam.
7) A positioning hole (4
4) a positioning hole (4) provided in a portion integral with the cam box (19) for supporting the cam shaft (18);
3. A cam opening device (1) with a positioning function according to claim 1, wherein said cam opening device (3) comprises a positioning pin (45) insertable into said two positioning holes (43, 44). 3. A cam (1) comprising:
7) and a positioning member (4) which can be fixed to a predetermined position of the cam boss (27) and the cam box (19) which rotate together.
2. A cam having a positioning function according to claim 1, wherein the cam is provided with a positioning concave portion (47) provided between the cam and the positioning member, and a positioning convex portion (48) fitted into the concave portion (47). Opening device (1). 4. The positioning means (42) is connected to a cam (1).
7), a cam boss (27) that rotates together with the cam boss (2).
The flat surface for positioning (51) formed in 7) and a positioning body (53) that can be fixed to a predetermined position of the cam box (19) and abuts on the flat surface (51). A cam opening device (1) with a positioning function according to claim 1. 5. A cam (1) for positioning the positioning means (42).
2. An engraving (54) formed on a cam boss (27) that rotates integrally with said (7), and an engraving (55) formed on a cam box (19) and facing said engraving (54). A cam opening device (1) having a positioning function. 6. The positioning device according to claim 1, wherein said positioning means includes a sensor for detecting the presence of an attached positioning element and outputting a signal for preventing rotation of the loom. Cam opening device with function (1).