JP2010281018A - Cam shedding device of loom - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cam shedding device of a loom, which facilitates the adjustment of a shedding quantity and elongates the lives of bearings contained in a link mechanism for linking shedding shafts to cam lever shafts, when applied to a water jet loom. <P>SOLUTION: This shedding device of the loom comprises a plurality of shedding shafts extended in the width direction of the loom below heddle frames, a cam-driving device in which a plurality of cam lever shafts disposed in response to the cam shafts of built-in cams and the shedding shafts and capable of being rotated with the cams are disposed in parallel to the shedding shafts, and a link mechanism for connecting the cam lever shafts to the shedding shafts. In this device, the cam lever shafts are extended toward the outside of a loom frame so that the tips of the cam lever shafts are placed on the outside of the loom frame on the side on which the cam-driving device is disposed; and the link mechanism is disposed on the outside of the loom frame and on the outside of the cams of the cam-driving device to connect the cam lever shafts to the shedding shaft penetrated through the loom frame. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cam opening device of a loom, and in particular, a plurality of opening shafts extending in the width direction of the loom below the reed frame and provided corresponding to each of the plurality of reed frames, and the left and right sides of the loom A plurality of cam lever shafts provided on one side of the frame and provided corresponding to the cam shafts of the built-in cams and the respective opening shafts and driven to rotate by the cams extend in parallel with the opening shafts. The present invention relates to a cam opening device of a type including a cam drive device arranged and a link mechanism for connecting a cam lever shaft and an opening shaft.

  There exists a thing disclosed by patent document 1 as a cam opening device of the said type. In the opening device disclosed in Patent Document 1, the collar frame is connected to an opening shaft (opening shaft) via a connecting rod and an opening lever. The opening shaft is provided so as to extend in the width direction of the loom below the rib frame between the left and right frames of the loom (the front side of the loom from directly below). Moreover, the opening shaft is provided with two or more according to the number of the collar frames. And the connection rod connected with the both-ends lower surface of the collar frame in the width direction is connected with the opening lever assembled | attached with the opening shaft so that relative rotation was impossible. With this configuration, the vertical frame positions are supported by the corresponding opening shafts via the connecting rods and the opening levers, and move in the vertical direction as the opening shafts rotate.

  In the opening device disclosed in Patent Document 1, a cam mechanism is employed as a configuration for rotating the opening shaft. This cam mechanism is provided on one side of the left and right loom frames, is supported by a camshaft (camshaft), and is a positive cam composed of a pair of cam plates that are driven to rotate as the camshaft rotates. A positive cam mechanism is composed of a bifurcated cam lever that supports a cam follower that contacts the peripheral surface of the cam plate and a cam lever shaft (cam lever shaft) that is fixed to the cam lever at one end. Further, the cam mechanism is connected to the opening shaft by a connecting mechanism (link mechanism) including a pair of levers fixed to the opening shaft and the cam lever shaft and a link member for connecting both the levers. These configurations constitute a positive cam opening device.

  According to this configuration of the cam opening device, as the cam shaft rotates, the cam lever reciprocally swings around the position of the cam lever shaft by the action of the positive cam, and the cam lever shaft reciprocates. Along with this, the camshaft and the opening shaft connected via the lever and the link member are driven to reciprocate, and the collar frame reciprocates in the vertical direction.

  In the cam opening device disclosed in Patent Document 1, the end of the opening shaft on the cam mechanism side is located on the inner side (the warp row side) than the loom frame (hereinafter also simply referred to as “frame”). Yes. Therefore, the cam lever shaft extends from the position of the cam lever toward the inside of the loom, and the end opposite to the cam lever side extends to the position of the end of the opening shaft in the width direction of the loom. Therefore, as a matter of course, the coupling mechanism for coupling the opening shaft and the cam lever shaft is located inside the frame.

  In addition, about the connection mechanism which connects an opening shaft and a cam lever shaft, in description of patent document 1, it becomes the structure which connects the lever fixed to each of an opening shaft and a cam lever shaft with the link member fixed to both levers. Yes. However, in the connection mechanism, the angle formed between each lever and the link member changes with the rotation of both shafts, so that the structure in which the lever and the link member are fixed cannot cope with this. Therefore, generally, a configuration is employed in which each lever and the link member are rotatably connected via a bearing or the like.

  In some looms, the opening amount may need to be adjusted. However, in the case of the opening device having the above-described configuration, generally, the connection position between the link member that connects both levers and one or both levers is generally set. A configuration that can be adjusted is adopted.

  By the way, in the cam opening device disclosed in Patent Document 1, there is a problem that it is difficult to adjust the opening amount, and the life of the bearing interposed between the lever and the link member when used in a water jet loom is long. Problems such as shortness arise.

  Specifically, the adjustment of the opening amount is performed by changing the connection position between the lever and the link member as described above. However, as in the configuration disclosed in Patent Document 1, the connection including the lever and the link member is performed. If the mechanism is located inside the frame, the operator must perform the adjustment work inside the frame. However, between the left and right frames of the loom, there are fabrics and warps above, and there are a plurality of members such as beams and open shafts extending between the left and right frames. For this reason, the worker must perform adjustment work in a poor working posture under the fabric or warp, and the work space is limited by the plurality of members described above, so workability is very high. bad.

  In the case of a water jet loom, the water sprayed from the weft insertion nozzle is scattered in the area inside the frame to insert the weft. Therefore, the members existing in the area are used for the scattered water (splash water). Be exposed. In the case of the opening device disclosed in Patent Document 1, since the connecting mechanism that connects the opening shaft and the cam lever shaft exists inside the frame, this connecting mechanism is also exposed to splashed water, and is included in the connecting mechanism. The bearing interposed between the lever and the link member is affected. Specifically, in the case of a bearing, since the lubrication state deteriorates with the intrusion of water, the performance is lowered early and the life is shortened.

Japanese Utility Model Publication No. 7-026378

  Accordingly, an object of the present invention is to facilitate the adjustment of the opening amount in the cam opening device using the cam driving device as described above, and to connect the opening shaft and the cam lever shaft when applied to a water jet loom. The purpose is to extend the life of the bearings included in the coupling mechanism (link mechanism).

  Under the above-mentioned problems, according to the present invention, in the cam opening device of a loom of the type described above, the cam lever shaft in the cam driving device is positioned outside the loom frame on the side where the cam driving device is provided. The link mechanism is arranged outside the loom frame and outside the cam of the cam drive device, and has a cam lever shaft and an opening shaft that penetrates the loom frame. It is characterized by connecting.

  The “outer side” in the present invention refers to the side away from the center of the warp row in the width direction of the loom. That is, the outside of the frame (cam) refers to the position on the counter warp row side with respect to the frame (cam). Therefore, the “outward direction” refers to a direction away from the center of the warp row in the width direction of the loom. Further, the “inner side” of the frame in the present specification refers to a position opposite to the above, that is, a position closer to the center of the warp row in the width direction of the loom. Incidentally, the “width direction of the loom” refers to a direction parallel to the width direction (longitudinal direction) of the rib frame (hereinafter, also simply referred to as “width direction”).

  In the cam opening device of the present invention, at least a part of the cam driving device may be disposed inside the frame (range of the frame width) in the width direction of the loom.

  According to the cam opening device of the loom according to the present invention, the opening shaft is provided so as to penetrate the frame on the side where the cam driving device is provided and extend to the outside of the frame. On the other hand, the cam lever shaft in the cam drive device extends outward from the cam lever in contact with the cam in the width direction, and its end is located outside the frame. Accordingly, the link mechanism that connects the opening shaft and the cam lever shaft is positioned outside the frame and the cam. Therefore, according to this configuration, the position of the link mechanism is outside the frame and outside the cam box including the cam mechanism including the cam and the cam lever. The opening amount can be adjusted without being obstructed by the presence of a fabric or the like. Therefore, the adjustment work can be easily performed and workability is improved.

  Further, according to the above configuration, when the cam opening device is applied to the water jet loom, the link mechanism is not exposed to the jet water for weft insertion scattered in the inner region of the frame. Bearings are not affected by water.

  Furthermore, in the width direction of the loom, at least a part of the cam driving device is disposed inside the frame, so that the position of the tip of the cam lever shaft is close to the frame. Therefore, the connection position (link mechanism position) between the opening shaft and the cam lever shaft can be made closer to the frame as compared with the case where all of the cam drive devices are provided outside the frame. As a result, the projecting length of the opening shaft from the frame can be shortened, so that the entire length of the opening shaft can be shortened as much as possible in the configuration in which the opening shaft and the cam lever shaft are connected to the outside of the frame. It is possible to prevent the opening shaft from being twisted due to the load of.

The perspective view which shows the principal part of the cam opening apparatus in one Embodiment of this invention. The cross-sectional front view which shows the cam opening apparatus in one Embodiment of this invention. The partial cross section top view which shows the cam opening apparatus in one Embodiment of this invention. The perspective view which shows a part of cam opening apparatus in one Embodiment of this invention.

  1 to 4 show an embodiment of a cam opening device of a loom according to the present invention, and show the periphery of a loom frame 1 on the right side when the loom is viewed from the woven fabric winding side. The loom shown in the figure is provided with four heddle frames 2 and divided into two sets of two pieces, and each set of the heddle frames 2 is moved up and down in opposite directions by the cam opening device 3 so that it is not shown. It is assumed that an opening motion is given to a warp row composed of a large number of warp yarns (not shown) supported by each heel frame 2 via a heel.

  The cam opening device 3 includes two opening shafts 10 and 10 provided corresponding to each of the groups of the frame 2 and a cam driving device 20 for rotationally driving the opening shafts 10 and 10. The cam drive device 20 including two cam lever shafts 21 and 21 corresponding to the respective opening shafts 10 and 10 and a pair of link mechanisms 30 for connecting the respective opening shafts 10 and 10 and the corresponding cam lever shafts 21 and 21 to each other. , 30.

  The two opening shafts 10 and 10 are arranged side by side in the vertical direction at a position below the heel frame 2 in the up-down direction and in the front-rear direction (warp direction) at a position before the weave frame 2 from the front F side. The bearing case 12a fixed to the inner side surface of the frame 1 and the bearing case 12b fixed to the outer side surface of the frame 1 are supported via a plurality of bearings arranged in parallel in the axial direction. That is, each opening shaft 10 is rotatably supported with respect to the frame 1 via the bearing cases 12a and 12b and a plurality of bearings arranged in parallel in the bearing cases 12a and 12b.

  Each opening shaft 10 is supported not only by the bearing case 12a provided inside the frame 1 but also by the bearing case 12b provided outside. That is, each opening shaft 10 penetrates the frame 1 and is also supported outside the frame 1. Further, each opening shaft 10 extends outside the frame 1 so as to protrude from the outer bearing case 12b.

  An opening lever 14 is assembled to each opening shaft 10 at a position corresponding to each of both ends of the collar frame 2 in the width direction through a key 10a formed on each opening shaft 10 so as not to be relatively rotatable. Each opening lever 14 is provided with a connecting rod 14 a, and the tip of the connecting rod 14 a is connected to a connecting tool 14 b attached to the lower surface of the frame 2. Accordingly, each flange frame 2 is supported at both ends in the width direction by a pair of opening levers 14 attached to the corresponding opening shaft 10 via the connecting rod 14a.

  By the way, in the example shown in the figure, if the four frame frames 2 are the first frame,..., The fourth frame from the pre-weave F side, the upper opening shaft 10 corresponds to the first and third frames, The opening shaft 10 corresponds to the second and fourth frames. Accordingly, the first and third frames are moved up and down in the same direction as one set, and the second and fourth frames are moved up and down in the opposite direction to the first and third frames. In addition, the attachment position of the opening lever 14 with respect to the upper and lower opening shafts 10 and 10 is set to a different position in the width direction for each opening shaft 10.

  The cam drive device 20 is mainly composed of a cam box 29, a pair of cam plates 23 and 23 housed in the cam box 29, and two cam levers 25 and 25 that come into contact with the cam plates 23 and 23 via cam followers. A cam mechanism. This cam mechanism is basically the same as the cam mechanism disclosed in Patent Document 1 described above.

  The cam box 29 includes a housing 29a having a U-shaped cross-section in the width direction in which the outer side (reverse warp row side) in the width direction is opened, and a lid 29b attached to the outer side surface of the housing 29a. Yes. In other words, the outer side wall in the width direction of the cam box 29 is formed by a removable lid 29b. Further, the cam box 29 has a plurality of mounting portions 29c, 29c,... At positions adjacent to the lid 29b on the peripheral surface of the housing 29a. The cam plates 23 and 23 and the cam levers 25 and 25 are housed in the cam box 29.

  The cam plates 23 are supported in a cam box 29 by a cam shaft 27 that extends in the width direction and is rotatably supported by the cam box 29. The cam shaft 27 passes through the lid 29 b of the cam box 21 and is provided so as to protrude from the cam box 29 toward the outer side of the frame 1. Then, the cam shaft 27 is rotationally driven by a drive mechanism described later connected to the protruding end portion.

  The cam driving device 20 is provided corresponding to each of the two opening shafts 10, 10, and is a cam lever shaft that is arranged side by side in a vertical direction at a position farther from the weaving front F than the collar frame 2 in the front-rear direction. 21 and 21. Each cam lever shaft 21 is provided so as to extend in parallel with the cam shaft 27, and like the cam shaft 27, the cam lever shaft 21 is rotatably supported by the cam box 29 and is provided so as to protrude from the cam box 29. Yes. A cam lever 25 is assembled to each cam lever shaft 21 so as not to be relatively rotatable. Incidentally, each cam lever 25 has a bifurcated shape including a base portion having a through hole through which the cam lever shaft 21 is inserted, and a pair of arms extending in a circular arc shape in the opposite directions from the base portion along the rotation trajectory of the cam plates 23 and 23. And is in contact with a pair of cam plates 23 and 23 via cam followers that are rotatable at the ends of the arms.

  In the cam mechanism in the cam drive device 20, each cam lever 25 is driven to reciprocate by the rotation of the cam plates 23, 23 accompanying the rotation drive of the cam shaft 27, and the cam lever shaft 21 is driven to rotate accordingly. Therefore, this cam mechanism constitutes a positive cam mechanism (positive cam mechanism).

  In the illustrated example, the cam box 29 is provided so that most of the cam box 29 is located within the frame 1 in the width direction of the loom. Specifically, a through hole in which the cam box 29 is fitted to the inner and outer side plates is formed at a position where the cam box 29 is provided in the frame 1, and the cam box 29 is attached to the frame 1 through the through hole. It is installed in the state where it was inserted.

  The cam box 29 has a plurality of attachment portions 29c provided on the peripheral surface thereof in contact with the outer side surface of the frame 1 and is inserted into the attachment portions 29c and screwed into the outer side plates of the frame 1. It is fixed to the frame 1 by a screw member. Accordingly, the lid 29b of the cam box 29 is located outside the frame 1, and the protruding portions of the cam shaft 27 and the cam lever shaft 21 protruding from the lid 29b of the cam box 29 are also located outside the frame 1. In the illustrated example, the cam box 29 protrudes from the frame 1 on the inner side because the width of the cam box 29 is larger than the width of the frame 1. That is, in the illustrated example, the cam box 29 penetrates the frame 1 in the width direction. Further, in the illustrated example, the cam plates 23, 23 housed in the cam box 29 are arranged slightly on the warp row side from the center of the cam box 29 in the width direction, and are located within the range of the frame 1. It is arranged.

  Each cam lever shaft 21 protruding from the cam box 29 in the cam drive device 20 is connected to the corresponding opening shaft 10 by a link mechanism 30 at the tip end (end on the counter warp row side) of the protruding portion. That is, each link mechanism 30 is disposed outside the frame 1 and outside the cam box 29, and connects the cam lever shaft 21 and the opening shaft 10 at that position. In the illustrated example, both link mechanisms 30 and 30 that connect the upper and lower cam lever shafts 21 and the opening shaft 10 are provided symmetrically in the vertical direction.

  Each link mechanism 30 includes a swing lever 31 that is fixed to the cam lever shaft 21 so as not to rotate relative to the distal end portion, and an opening that is fixed to the opening shaft 10 so as not to rotate relative to the shaft 10. The shaft lever 33 and the connecting rod 35 that connects the swing lever 31 and the opening shaft lever 33 are mainly configured. The position of the swing lever 31 and the opening shaft lever 33 on the outside of the frame 1 is substantially the same position in the width direction of the loom.

  The swing lever 31 and the opening shaft lever 33 are fixed at one end to the corresponding cam lever shaft 21 and the opening shaft 10 by a so-called split fastening structure via a key formed on one side and a key groove formed on the other side. Has been. Further, the other ends of the swing lever 31 and the opening shaft lever 33 are formed in a bifurcated shape for receiving the connecting rod 35. Further, through holes are formed at both ends of the connecting rod 35, and bearings (not shown) are fitted into the through holes.

  The bifurcated portion of the opening shaft lever 33 is formed with a through hole for receiving a connecting pin 33a for connecting to the connecting rod 35, and has a split structure for fixing the connecting pin 33a. Then, in a state where one end of the connecting rod 35 is received by the bifurcated portion of the opening shaft lever 33, the connecting pin 33a is inserted into the through hole of the bifurcated portion and the through hole of one end of the connecting rod 35, and the connecting pin 33a is cut by tightening. Is fixed to the opening shaft lever 33 in a non-rotatable manner, so that the opening shaft lever 33 and one end of the connecting rod 35 are rotatable via a bearing fitted in a through hole at one end of the connecting pin 33a and the connecting rod 35. It will be in the state connected to.

  The bifurcated portion of the swing lever 31 is formed with a long hole extending in the longitudinal direction, and a connecting pin 31a for connecting to the connecting rod 35 is received in the long hole. The connecting pin 31a has a bolt shape, and a bolt head is formed at one end and a male screw portion is formed at the other end. The connecting pin 31a is inserted into the long hole of the bifurcated portion of the swing lever 31, and a nut (not shown) is screwed to the male screw portion at the other end, so that the bolt head and the nut Thus, the swing lever 31 (bifurcated portion) is sandwiched, and the position is fixed to the swing lever 31 by the tightening force. Therefore, the position of the connecting pin 31 a can be changed within the range of the long hole of the swing lever 31.

  Then, with the other end of the connecting rod 35 being received by the bifurcated portion of the swing lever 31, the connecting pin 31a is inserted into the long hole of the bifurcated portion and the through hole at the other end of the connecting rod 35. By fixing the position relative to the swing lever 31, the swing lever 31 and the other end of the connecting rod 35 can be freely rotated via a bearing fitted in the through hole at the other end of the connecting pin 31 a and the connecting rod 35. It becomes a connected state. Further, the connection position of the swing lever 31 and the connecting rod 35 is adjusted by changing the fixing position of the connection pin 31a with respect to the swing lever 31 within the range of the long hole.

  The drive mechanism for rotationally driving the cam shaft 27 described above uses the main drive motor 5 for rotationally driving the main shaft 4 as a drive source. In the illustrated example, the main drive motor 5 is installed on the upper surface of the frame 1 by a bracket or the like. In addition, the crankshaft 6 is rotatably supported by the frame 1 with bearings in a state of penetrating the frame 1. The main shaft 4 is connected to the crankshaft 6 so as not to rotate relative to the inner side of the frame 1 by a shaft coupling 4a.

  In the illustrated configuration, a motor pulley 5 b is attached to the output shaft 5 a of the main drive motor 5, while a drive pulley 6 a is attached to the outer end portion of the frame 1 of the crankshaft 6. Furthermore, the motor pulley 5b and the drive pulley 6a are connected by a V-belt 7a wound around both pulleys. With this configuration, the rotation of the output shaft 5a of the main drive motor 5 is transmitted to the crankshaft 6 via the motor pulley 5b, the V belt 7a and the drive pulley 6a, and the crankshaft 6 and the main shaft 4 are rotationally driven by the main drive motor 5. Is done.

  A timing pulley 6b is attached to the drive pulley 6a on the side opposite to the frame 1. The timing pulley 6b is provided coaxially with the drive pulley 6a so as not to rotate relative to the drive pulley 6a by a screw member screwed around a through hole that receives the tip of the crankshaft 6 in the drive pulley 6a. On the other hand, a timing pulley 27 a is attached to the tip of the cam shaft 27 in the cam drive device 20. The timing pulley 6b and the timing pulley 27a are connected by a timing belt 7b wound around both pulleys. With this configuration, as the main shaft 4 is driven to rotate by the main drive motor 5, the rotation of the drive pulley 6a is transmitted to the cam shaft 27 via the timing pulley 6b, the timing belt 7b, and the timing pulley 27a. 27 is rotationally driven.

  In the cam opening device 3 described above, most of the cam box 29 in the cam drive device 20 is located within the range of the frame 1 in the width direction of the loom, and the end on the counter warp row side is the frame 1. It is installed so as to protrude outward. The cam 23 that is housed in the cam box 29 and is positioned within the frame 1 in the width direction of the loom, and the cam lever shaft 21 that is rotationally driven by the cam lever 25 are located from the position of the cam lever 25 within the frame 1. It extends toward the outer side of the frame 1 and is provided so as to protrude from the cam box 29. On the other hand, the opening shaft 10 connected to the collar frame 2 passes through the frame 1 on the side where the cam driving device 20 is provided, and extends to a position substantially the same as the tip of the cam lever shaft 21 in the width direction.

  Therefore, the cam lever shaft 21 and the opening shaft 10 can be connected at a position outside the frame 1 and outside the frame 1 relative to the cam box 29 (the cam 23 built in the cam box 29). As a result, the link mechanism 30 for connecting the cam lever shaft 21 and the opening shaft 10 can be disposed outside the frame 1 (cam box 29). In the case of a water jet loom, the frame 1 is inserted along with the weft insertion. It is possible to eliminate the influence of the water scattered in the inner region of the link mechanism 30 on the bearing and the like.

  In addition, since the link mechanism 30 is disposed outside the frame 1 (cam box 29), the work for adjusting the opening amount is not hindered by the fabric or other members existing between the left and right frames 1. That is, it is possible to change the connection position between the swing lever 31 and the connecting rod 35, and the operation can be easily performed as compared with the conventional art.

  In the embodiment described above, the cam opening device 3 in the assumed loom includes the two opening shafts 10 and 10 and the cam lever shaft 21 and the cam lever 25 corresponding to the respective opening shafts 10, so that 4 The opening motion is given to the single frame 2, but the cam opening device assumed by the present invention is not limited to such a configuration, but by three or more opening shafts and corresponding cam lever shafts, It may be configured to drive three or more saddle frames. Further, in the cam opening device according to the present invention, not all of the plurality of cam lever shafts extend outward, but a part thereof may extend inward. That is, in the cam opening device of the present invention, at least one of the plurality of cam lever shafts extends toward the outside of the loom frame so that the tip end portion is located outside the loom frame. I just need it.

  Further, in the above-described embodiment, the cam driving device 20 is configured such that most of the cam box 29 is located in the range of the frame 1 in the width direction of the loom, and only a part of the cam box protrudes to the outside of the frame 1. Has been placed. However, the cam driving device according to the present invention is not limited to such an arrangement, and the entire cam box may be arranged outside the frame. Also, all the cam boxes are located on the inner side (warp row side) of the frame in the width direction of the loom (including the case where all of the cam boxes are arranged inside the frame), and only the cam lever shaft is the frame. It is good also as arrangement | positioning which protrudes outside.

  However, if the cam box is placed outside, the tip position of the cam lever shaft (link mechanism connection position) will be further away from the frame, and accordingly the protruding length of the opening shaft from the frame must be increased accordingly. I will have to. As a result, the opening shaft becomes long, and a twist or the like due to a load due to the opening motion is likely to occur, which may cause a problem that a desired opening amount cannot be obtained. Therefore, it is preferable that the tip of the cam lever shaft is close to the frame, and the cam box is arranged so that at least a part of the cam box is located within the range of the frame in the width direction of the loom, rather than being arranged entirely outside the frame. Preferably it is done.

  On the other hand, in the case where the cam box is arranged inside the frame, there are many cases where it is difficult due to the installation space inside the frame, which may limit the installation space of other members and devices. Therefore, from the viewpoint of installation space, it is preferable that at least a part of the cam box is positioned within the frame in the width direction.

  The cam opening device according to the present invention is not limited to the water jet loom but can be applied to other non-woven looms.

  Furthermore, the present invention is not limited to any of the embodiments described above, and various modifications can be made without departing from the spirit of the present invention.

1 Loom frame (frame)
2 Frame 3 Cam opening device 4 Main shaft 5 Main drive motor 5b Motor pulley 6 Crank shaft 6a Drive pulley 6b Timing pulley 7a V belt 7b Timing belt 10 Open shaft 14 Open lever 14a Connecting rod 20 Cam drive device 21 Cam lever shaft 23 Cam plate 25 Cam lever 27 Cam shaft 27a Timing pulley 29 Cam box 30 Link mechanism 31 Swing lever 33 Opening shaft lever 35 Connecting rod

Claims (2)

A plurality of opening shafts extending in the width direction of the loom below the reed frame and provided corresponding to each of the plurality of reed frames, and provided on one side of the left and right loom frames and built in A cam driving device provided corresponding to a cam shaft of the cam and each opening shaft, and a plurality of cam lever shafts rotated by the cam so as to extend in parallel with the opening shaft; and the cam lever A cam opening device including a shaft and a link mechanism connecting the opening shaft;
The cam lever shaft extends toward the outside of the loom frame so that a tip portion thereof is positioned outside the loom frame on the side where the cam driving device is provided,
The link mechanism is disposed outside the loom frame and outside the cam of the cam driving device, and connects the cam lever shaft and the opening shaft penetrating the loom frame.
A cam opening device for a loom characterized by the above. The cam driving device is arranged at least partially inside the loom frame in the width direction of the loom.
The cam opening device for a loom according to claim 1.

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