Shed rod for loom

Abstract

[Problem] To provide a loom reed that makes it possible for knots in a warp to pass easily through the reed during a loom change. [Solution] A first horizontally-oriented recess 114D that opens on the cloth fell 112 side of a first dent 114 is opposite a second horizontally-oriented recess 116D of a second dent 116. The gap between the first horizontally-oriented recess 114D and the second horizontally-oriented recess 116D is greater than the normal gap between dents and allows a knot to pass easily therethrough. The second horizontally-oriented recess 116D is a semicircle that has an upper edge, a lower edge, and an inner edge, the upper edge being connected to a dent side edge by an upper arced edge, and the lower edge being connected to a lower side edge by a lower arced edge that has a larger curvature than the upper arced edge. As a result, the upper edge of the second horizontally-oriented recess 116D has a straight section, and a guide part for the knot is lengthened. This facilitates guidance of the knot by the upper edge of the second horizontally-oriented recess. In addition, the large curvature of the lower arced edge allows a warp 102 to be guided smoothly downward when the warp 102 is lowered.

Description

Technical Field

[0001] The present invention relates to a reed for a loom suitable for making weaving preparations by connecting new warp threads on the loom. Specifically, the present invention relates to a reed for a thick-thread loom in which new warp threads are connected on the loom so that the passage between the reed blades at the connection can be easily made. In this specification, "thick thread" usually means a thread that can pass between the reed blades for thin threads, but the knot ball is large and it is difficult to pass through the gap between the normal reed blades. For example, it includes thick threads with a diameter of 1 mm or more and flat yarn threads with a flat cross-sectional shape. Also, the thick thread generally refers to 10 or less counts for spun yarns and 1000 tex or more for filament yarns, but is not limited to these. In this specification, terms representing numbers such as the first reed blade and the second reed blade are used to distinguish reed blades etc. due to differences in shape, or to distinguish the same functional parts. When interpreting the technical scope, these terms representing numbers are not considered.

Background Art

[0002] As a first prior art, a reed for a loom for beating the weft before weaving using a reed in which the first reed blade and the second reed blade are alternately arranged at a predetermined interval, and the upper end portions of the first reed blade and the second reed blade are fixed to the upper frame, and the lower end portions of the first reed blade and the second reed blade are fixed to the lower frame and integrated. The first reed blade has an elongated thin flat plate shape and has a first lateral concave portion with a partially open side edge, and the second reed blade has a second lateral concave portion configured to face the first lateral concave portion of the first reed blade. A loom reed is known (for example, see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The first reed blade is in the shape of an elongated thin flat plate, and a part thereof has a first horizontally concave portion that is open toward the front of the loom, so it has the same size as the conventional reed blade of an elongated thin flat plate. Also, adjacent second reed blades are in the shape of an elongated thin flat plate, and a second horizontally concave portion facing the first horizontally concave portion is formed.

[0005] In the machine change operation on the loom, when passing the knot between the first horizontally concave portion and the second horizontally concave portion, delicate attention is still required in the operation of passing the knot. In the worst case, there is a concern that the warp may be damaged or the knot may come undone. Hereinafter, the concerns of the prior art will be described in detail with reference to FIGS. 6 to 8. In FIG. 6(A), 10 is a warp beam, 12 is a warp, 12E is the end portion of the old warp 12, 12T is the tip portion of the new warp 12 from the new warp beam 10n, 14 is a backrest roller, 16 is a heddle, 18 is a reed composed of a first reed blade 20 and a second reed blade 21, 22 is the front of the loom, 24 is the woven fabric, 26 is a breast beam, 28 is a take-up device, 32 is a cross roller, and 34 is a delivery device. The take-up device 28 and the delivery device 34 can be individually operated manually. For machine changes of the same variety, a knot ball k is mechanically formed and joined at the end portion 12E of the old warp 12 by using a knotter (tying machine) with the tip portion 12T of the warp 12 drawn from the newly installed warp beam 10n. As shown in FIG. 6(B), since two threads are knotted for the knot ball k, a knot ball k and a knot ball end e are formed. Hereinafter, the knot ball k and the knot ball end e are collectively referred to as the knot ball portion K. Therefore, the knot ball portion K becomes significantly thicker than the thickness of the warp 12, and it is inevitable that the substantial thickness exceeds three times the diameter of the warp 12.

[0006] Next, the operation of passing the knot ball portion K through the reed 18, specifically between the first reed blade 20 and the second reed blade 21, will be described with reference to FIGS. 7 and 8 as well. When passing the knot ball portion K of the warp threads 12 connected by the knotter through the reed 18, as shown in Fig. 7(A), after setting the reed 18 in a substantially vertical state, the warp threads 12 are moved toward the front of the loom 22 at a slow speed while keeping the warp threads 12 in a low-tension state. For example, the take-up device 28 and the feed device 34 are manually operated alternately to move the warp threads 12 toward the front of the loom 22. Thereby, the knot ball portion K is passed through the heddles 16 and positioned between the heddles 16 and the reed 18 (Fig. 7(B)).

[0007] Next, the take-up device 28 and the feed device 34 are manually operated alternately to relax the warp threads 12, and then a part of the warp threads 12 on the front of the loom 22 side of the reed 18 is lifted with the palm H so as to scoop it up, and the knot portion K is lifted so as to face the second laterally concave portion 21D of the second reed blade 21. During this operation, while confirming the position of the knot portion K with the eye E, it is made to face the second laterally concave portion 21D of the reed 18 (Fig. 7(C)). In this case, since the knot portion K is hidden behind the reed 18, the positional relationship between the knot portion K and the second laterally concave portion 21D is estimated visually.

[0008] Next, the warp threads 12 are moved toward the front of the loom 22. By this movement of the warp threads 12 toward the front of the loom 22, after the knot ball portion K is positioned in the second laterally concave portion 21D, it is passed between the first reed blade 20 and the second reed blade 21 through between the first back-side end 20DS of the first laterally concave portion 20D and the second back-side end 21DS of the second laterally concave portion 21D (Fig. 8(D)). When the knot ball portion K is positioned in the second laterally concave portion 21D, it will be positioned between the first connecting portions 20J of the adjacent first reed blade 20 (Fig. 6(D)). At this time, when the knot part K contacts the inclined second upper inclined edge 21US of the second lateral concave part 21D, it is guided toward the second back edge 21DS side of the second lateral concave part 21D by the second upper inclined edge 21US. Similarly, when the knot part K contacts the second lower inclined edge 21LS, it is guided toward the second back edge 21DS side of the second lateral concave part 21D by the inclined second lower inclined edge 21LS. When the warp 12 is guided by the second upper inclined edge 21US or the second lower inclined edge 21LS, it is guided in the same manner as the knot part K. When the knot part K is guided by the second upper inclined edge 21US or the second lower inclined edge 21LS, it moves while being guided toward the middle between the second upper inclined edge 21US and the second lower inclined edge 21LS by the component force of the tension applied to the warp 12. Therefore, the tension applied to the warp 12 becomes high, and there is a concern that the warp 12 may be damaged or the knot k may come undone. Note that the knot k is not created by strongly pulling the knot end e as in the case of a person tying a knot, but is simply passed through the knot end e. Therefore, there is a concern that it may come undone when strongly pulled.

[0009] Next, the knot part K is moved downward, and the warp 12 is positioned between the lower parts of the first reed blade 20 and the second reed blade 21. This operation is repeated for the weaving width of the woven fabric 104, and all the knot parts K for the weaving width are passed between the first reed blade 20 and the second reed blade 21. Therefore, when passing the knot part K through the reed 18, it must be drawn through with delicate attention so as not to damage the warp 12 and so that the knot k does not come undone, and there has been a strong demand for an easier operation.

[0010] An object of the present invention is to provide a reed for a loom that does not damage the warp and is difficult for the knot to come undone in the machine-changing process on the loom.

Means for Solving the Problems

[0011] To achieve this object, a first invention according to the present invention is configured as follows. A reed for a loom for beating a weft yarn before weaving, using a reed in which a first reed blade having a first horizontally concave portion with an elongated thin flat plate shape and a part of a side edge on the front side of the weaving being open above the upper yarn of the largest opening, and a second reed blade having a second horizontally concave portion with a part of a side edge on the opposite front side of the weaving being open above the upper yarn of the largest opening are arranged alternately at a predetermined interval with the second horizontally concave portion facing the first horizontally concave portion, and the upper end portions of the first reed blade and the second reed blade are fixed to an upper frame and the lower end portions of the first reed blade and the second reed blade are fixed to a lower frame and integrated. The first horizontally concave portion and the second horizontally concave portion are formed in a semicircular shape having an upper side edge, a lower side edge, and a back side edge, the upper side edge and the side edge are connected by an upper arc edge, the lower side edge and the side edge are connected by a lower arc edge, and the curvature of the lower arc edge is larger than the curvature of the upper arc edge.

[0012] The second invention according to the present invention is configured as follows. The loom reed according to the first invention, wherein the centers of the semicircles of the first horizontally concave portion and the second horizontally concave portion are located within the width of the first reed blade or the second reed blade.

[0013] The third invention according to the present invention is configured as follows. The loom reed according to the first or second invention, wherein the first reed blade and the second reed blade have the same shape.

[0014] The fourth invention according to the present invention is configured as follows. The loom reed according to the first to third inventions, wherein the interval between the first reed blade and the second reed blade is defined by a winding line having an elliptical appearance.

[0015] The fifth invention according to the present invention is configured as follows. The loom reed according to the fourth invention, wherein the winding line is arranged above the upper arc edge.

[0016] The sixth invention according to the present invention is configured as follows. The width of the first reed blade and the second reed blade in the warp elongation direction is 12 millimeters, the radius of the semi-circular shape of the first lateral concave portion and the second lateral concave portion is 6 millimeters, and the width of the first reed blade or the second reed blade passing through the center of the radius and orthogonal to the side edge of the first reed blade or the second reed blade is 4 millimeters. The radius of the upper arc edge is 0.5 millimeter, and the radius of the lower arc edge is 3 millimeters. The reed for a loom according to the first invention is characterized by these dimensions.

Effect of the Invention

[0017] In the first invention, since the first reed blade and the second reed blade are in the shape of an elongated thin flat plate, they have the same shape as the conventional reed blades. The first lateral concave portion having an opening on the front side of the reed of the first reed blade and the second lateral concave portion of the second reed blade are arranged facing each other. Therefore, the interval between the first lateral concave portion and the second lateral concave portion is larger than the normal reed blade interval, and it is easier for a large knot portion to pass through. And in the first invention, since the first lateral concave portion and the second lateral concave portion are formed above the warp at the maximum opening, the warp and the first lateral concave portion or the second lateral concave portion do not come into sliding contact during weaving, and it does not have an adverse effect on weaving. Furthermore, the second laterally concave portion is formed in a semi-circular shape having an upper edge, a lower edge, and a back edge. The upper edge and the side edge are connected by an upper arc edge, and the lower edge and the side edge are connected by a lower arc edge. The curvature of the lower arc edge is configured to be larger than the curvature of the upper arc edge. With this configuration, since the upper edge is positioned substantially parallel to the moving direction of the knot portion K, it can be moved to the back edge without significantly increasing the tension of the warp threads. Also, since the curvature of the upper arc edge is small, the upper edge of the second laterally concave portion has a longer straight portion, and the guide portion for the knot portion becomes longer. By these means, the knot portion is easily guided by the upper edge of the second laterally concave portion. Also, although there is an inclined edge near the back edge, since it also faces the back edge portion of the first reed blade, it can be drawn through without increasing the tensile force of the warp threads during drawing. Therefore, there is an advantage that the risk of damage to the warp threads and the knot coming undone is reduced. Furthermore, since the curvature of the lower arc edge is large, when lowering the warp threads after the knot portion has passed through the reed, the lower arc edge with a large curvature is inclined downward, and the warp threads or the knot portion moving downward are smoothly guided downward. Therefore, it is possible to provide a reed for a loom that does not damage the warp threads and is less likely to have the knot come undone, and there is an advantage that the object of the present invention can be achieved.

[0018] In the second invention, since the basic configuration is the same as that of the first invention, the object of the present invention can be achieved. Furthermore, in the second invention, since the centers of the semi-circular shapes of the first laterally concave portion and the second laterally concave portion are located within the width of the first reed blade or the second reed blade, a straight portion is formed on the upper edge, so there is an advantage that the warp threads are further less likely to be damaged and the knot is less likely to come undone.

[0019] In the third invention, since the basic configuration is the same as that of the first invention, the object of the present invention can be achieved. Furthermore, in the third invention, since the first reed blade and the second reed blade have the same shape, they can be manufactured using the same mold, and there is an advantage that the manufacturing cost can be reduced.

[0020] In the fourth invention, since the basic configuration is the same as that of the first invention, the object of the present invention can be achieved. Further, in the fourth invention, since the distance between the first reed blade and the second reed blade is defined by a winding wire having an elliptical appearance, the height of the reed can be reduced, and as a result, the reed can be lightened, which is advantageous for increasing the speed and energy saving of the loom.

[0021] In the fifth invention, since the basic configuration is the same as that of the first invention, the object of the present invention can be achieved. Further, in the fifth invention, since the winding wire that defines the distance between the first reed blade and the second reed blade is arranged above the upper arc edge, there is very little risk of contact with the warp threads, so there is an advantage of not damaging the warp threads.

[0022] In the sixth invention, since the basic configuration is the same as that of the first invention, the object of the present invention can be achieved. Further, in the sixth invention, the width of the first reed blade and the second reed blade in the warp elongation direction is 12 millimeters, the radius of the semi-circle of the first lateral recess and the second lateral recess is 6 millimeters, the width of the first reed blade or the second reed blade passing through the center of the radius and perpendicular to the side edge of the first reed blade or the second reed blade is 4 millimeters, the radius of the upper arc edge is 0.5 millimeters, and the radius of the lower arc edge is 3 millimeters. This configuration is a preferred embodiment of the present invention.

Brief Description of the Drawings

[0023]

Figure 1

Figure 2

Figure 3

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Figure 5

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Figure 8

DETAILED DESCRIPTION OF THE INVENTION

[0024] The reed for a loom according to the present invention has an elongated thin flat plate shape, and includes a first reed blade having a first horizontally concave portion with a part of the side edge on the front side of the weaving being open above the upper warp thread of the maximum opening, and a second reed blade having a second horizontally concave portion with a part of the side edge on the anti-front side of the weaving being open above the upper warp thread of the maximum opening. The second horizontally concave portion faces the first horizontally concave portion and is arranged alternately at a predetermined interval. The upper ends of the first reed blade and the second reed blade are fixed to the upper frame, and the lower ends of the first reed blade and the second reed blade are fixed to the lower frame to form an integrated reed, which is a reed for a loom for beating the weft thread in front of the reed. The first horizontally concave portion and the second horizontally concave portion are formed in a semicircular shape having an upper side edge, a lower side edge, and a back side edge. The upper side edge and the side edge are connected by an upper arc edge, and the lower side edge and the side edge are connected by a lower arc edge. It is preferable that the curvature of the lower arc edge is larger than the curvature of the upper arc edge.

[0025] Preferably, the centers of the semi - circles of the first horizontal recess and the second horizontal recess are located within the width of the first reed blade or the second reed blade.

[0026] Preferably, the first reed blade and the second reed blade have the same shape.

[0027] Preferably, the space between the first reed blade and the second reed blade is defined by a winding line with an elliptical appearance.

[0028] Preferably, the winding line is arranged above the upper arc edge.

[0029] Furthermore, the width of the first reed blade and the second reed blade in the warp elongation direction is 12 millimeters, the radius of the semi - circles of the first horizontal recess and the second horizontal recess is 6 millimeters, the width of the first reed blade or the second reed blade passing through the center of the radius and perpendicular to the side edge of the first reed blade or the second reed blade is 4 millimeters, the radius of the upper arc edge is 0.5 millimeter, and the radius of the lower arc edge is preferably 3 millimeters.

Example

[0030] Referring to FIGS. 1 - 5, the reed 100 for a loom in Example 1 will be described. The reed 100 has a function of beating the weft yarn 108 inserted by a repair, a fluid jet, a gripper, etc. into the warp opening 106 formed by the warp yarns 102 (upper warp yarns 102U and lower warp yarns 102B) at a predetermined timing by swinging, to beat the reed against the front of the woven fabric 104. In this Example 1, the reed 100 is composed of a first reed blade 114, a second reed blade 116, a parent blade root 118, an upper frame 122, a lower frame 124, and winding lines 126 (upper winding lines 126U and lower winding lines 126B). In FIG. 1, the reed 100 is illustrated at the beating position and the weft - inserting position for convenience.

[0031] Next, the first reed blade 114 will be mainly described with reference to FIG. 2. The first reed blade 114 has a function of guiding the warp 102 and beating the weft 108. In the first embodiment, the first reed blade 114 is an elongated thin flat plate-shaped reed blade with a first thickness T1 of about 0.2 mm, a first height (length) L1 of about 100 mm, and a first width W1 of the first reed blade 114 of about 12 mm. Usually, it is formed of stainless steel, but the material is not limited. The corners of the front edge 114F and the rear edge 114B, which are the side edges in sliding contact with the warp 102 of the first reed blade 114, are rounded. A first laterally concave portion 114D is formed in the first reed blade 114. The lower part 114L of the first reed blade 114 of the first reed blade 114 is inserted into the lower groove 124G of the channel-shaped lower frame 124, and the upper part 114U of the first reed blade 114 of the first reed blade 114 is inserted into the upper groove 122G of the downward channel-shaped upper frame 122 and fixed by an adhesive or the like.

[0032] Next, the first laterally concave portion 114D will be described mainly with reference to FIG. 3. In the first embodiment, the first laterally concave portion 114D is formed in the upper part of the first reed blade 114 and is a laterally semi-circular concave portion in which a part of the front edge 114F on the side of the pre-loom 112 is open. In other words, the first laterally concave portion 114D has a first opening 130A, a first upper edge 130U, a first back edge 130B, and a first lower edge 130L in which a part of the first front edge 114F on the side of the pre-loom 112 is open. Therefore, the upper part and the lower part of the first reed blade 114 are connected to the first laterally concave portion 114D by a first connecting portion 114J located at a position offset with respect to the first center line 114C of the first reed blade 114.

[0033] As shown in FIG. 3(C), the cross section of the first connecting portion 114J has a smaller cross-sectional area than the cross section of other parts (FIG. 2(E)). The first laterally concave portion 114D is formed above the upper yarn 102U of the warp 102 at the maximum opening and is formed at a position where it does not come into sliding contact with the warp 102. The first upper edge 130U and the first upper front edge 114UF are connected by a first upper arc edge 114UC. The first lower edge 130L and the first lower front edge 114LF are connected by a first lower arc edge 114LC. The first lower arc edge 114LC has a greater curvature than the first upper arc edge 114UC.

[0034] When the first width W1 in the extension direction of the warp 102 of the first reed blade 114 is 12 mm, the first laterally concave portion 114D preferably has a circular arc with a first radius R11 of 6 mm with the first center C11 being 2 mm inside from the first front edge 114F, the first upper arc edge 114UC preferably has a circular arc with a second radius R12 of 0.5 mm, and the first lower arc edge 114LC preferably has a circular arc with a third radius R13 of 3.0 mm. These dimensions do not require strict identity and may be within the range where the same actions and effects can be obtained. Accordingly, it can be said that the semi-circular first center C11 of the first laterally concave portion 114D is located within the first width W1 of the first reed blade 114, and the curvature of the first lower arc edge 114LC is larger than the curvature of the first upper arc edge 114UC. Accordingly, the first connection portion width WJ1 of the first connection portion 114J is 4.0 mm. According to this preferred example, a first straight portion 114S of 1.5 mm is formed between the first upper edge 130U and the first upper arc edge 114UC. The first lower edge 130L and the first lower arc edge 114LC form a downward slope.

[0035] Next, the second reed blade 116 will be mainly described with reference to FIG. 3. The second reed blade 116 is formed in a line-symmetric shape with respect to the first reed blade 114. By forming it in a line-symmetric shape, there is an advantage that the first reed blade 114 and the second reed blade 116 can be formed with one molding die, and thus the reed 100 can be manufactured at low cost.

[0036] The second reed blade 116 has the same function as the first reed blade 114. In the first embodiment, the second reed blade 116 is a thin flat plate-shaped reed blade with a second thickness T2 of about 0.2 mm, a second height (length) L2 of about 100 mm, and a second width W2 of about 12 mm. Usually, it is formed of stainless steel, but the material is not limited. In other words, the second thickness T2 of the second reed blade 116 is the same as the first thickness T1 of the first reed blade 114, the second height L2 is the same as the first height L1 of the first reed blade 114, and the second width W2 is the same as the first width W1 of the first reed blade 114. The corners of the second front edge 116F and the second rear edge 116B of the second reed blade 116 that are in sliding contact with the warp 102 are rounded. A second lateral recess 116D is formed in the second reed blade 116. The second lower end 116L of the second reed blade 116 is inserted into the lower groove 124G of the lower frame 124, and the second upper end 116U is inserted into the upper groove 122G of the upper frame 122 and fixed by an adhesive or the like.

[0037] Next, the second lateral recess 116D will be mainly described with reference to FIG. 3. In the first embodiment, the second lateral recess 116D is formed in the upper part of the second reed blade 116 and is a lateral semi-circular recess with the side before the reverse weaving 112 being open. In other words, the second lateral recess 116D has a second opening 132A, a second upper edge 132U, a second back edge 132B, and a second lower edge 132L where a part of the second rear edge 116B on the side before the reverse weaving 112 is open. Therefore, the upper part and the lower part of the second reed blade 116 are connected to the second lateral recess 116D by a second connecting part 116J located at a position offset with respect to the second center line 116C of the second reed blade 116.

[0038] As shown in FIG. 3(D), the cross-section of the second connecting part 116J has a smaller cross-sectional area than the cross-sections of other parts (FIG. 2(E)). The second lateral recess 116D is formed above the upper yarn 102U of the warp 102 at the maximum opening and is formed at a position where it does not come into sliding contact with the warp 102. The second upper edge 132U and the second upper rear edge 116UB are connected by a second upper arc edge 116UC. The second lower edge 132L and the second lower rear edge 116LB are connected by a second lower arc edge 116LC. The second lower arc edge 116LC has a greater curvature than the second upper arc edge 116UC.

[0039] When the second width W2 in the elongation direction of the warp 102 of the second reed 116 is 12 mm, the second laterally concave portion 116D is an arc with a second radius R21 of 6 mm with the second center C21 being 2 mm inside from the second rear edge 116B, the second upper arc edge 116UC is an arc with a second radius R22 of 0.5 mm, and the second lower arc edge 116LC is preferably an arc with a second radius R23 of 3.0 mm. Thereby, the second connection portion width WJ2 of the second connection portion 116J is 4.0 mm. These dimensions do not require strict identity and may be within the range where the same actions and effects can be obtained. Thereby, the semi-circular second center C21 of the second laterally concave portion 116D is located within the second width W2 of the second reed 116, and it can be said that the curvature of the second lower arc edge 116LC is greater than the curvature of the second upper arc edge 116UC. According to this preferred example, a second straight portion 116S of 1.5 mm is formed between the second upper edge 132U and the second upper arc edge 116UC following it. The second lower edge 132L and the second lower arc edge 116LC constitute a downward slope. Note that the first width W1 and the second width W2 are not limited to 12 mm and can be appropriately set according to the fabric to be woven.

[0040] Next, the main blade 118 will be described. The main blade 118 is a flat plate having the same height (length) and width as the first height L1, the first width W1 of the first reed 114, the second height L2, and the second width W2 of the second reed 116, and having a thickness thicker than the first thickness T1 of the first reed 114 and the second thickness T2 of the second reed 116. Usually, it is formed of stainless steel, but the material is not limited. The main blade 118 is arranged at the left and right ends where the first reed 114 and the second reed 116 are arranged in a row at a predetermined interval. Note that when sufficient strength can be obtained by the first reed 114 and the second reed 116, the main blade 118 can be dispensed with.

[0041] Next, the upper frame 122 will be described. The upper frame 122 houses the upper ends of the main blade 118, the first rib blade 114, and the second rib blade 116, and is integrated with them by an adhesive or the like, and has a function of being a strength member of the rib 100. In the first embodiment, the upper frame 122 is formed of aluminum in a downward channel shape having a rectangular upper groove 122G extending in the longitudinal direction in a side view. However, the material of the upper frame 122 is not limited as long as sufficient strength can be ensured.

[0042] Next, the lower frame 124 will be described. The lower frame 124 houses the lower ends of the main blade 118, the first rib blade 114, and the second rib blade 116, and is integrated with them by an adhesive or the like, and has a function of being a strength member of the rib 100. In the first embodiment, the lower frame 124 is formed of aluminum in an upward channel shape having a rectangular lower groove 124G extending in the longitudinal direction in a side view. However, the material of the lower frame 124 is not limited as long as sufficient strength can be ensured.

[0043] Next, the winding 126 will be described. The winding 126 has a function of arranging the intervals between the first rib blade 114 and the second rib blade 116 at a predetermined interval, and is composed of an upper winding 126U and a lower winding 126B.

[0044] First, the upper winding 126U will be described. The upper winding wire 126U has a function of regulating the interval between the upper parts of the first reed blade 114 and the second reed blade 116 to a predetermined interval. The upper winding wire 126U is in the shape of a coil spring formed of a metal having a wire diameter corresponding to the interval between the first reed blade 114 and the second reed blade 116, and has an elliptical appearance. The upper ends of the first reed blade 114 and the second reed blade 116 are alternately arranged between the wires constituting the upper winding wire 126U. Note that the coil spring shape is one that externally exhibits the shape of a coil spring and does not necessarily have a spring function. Also, the upper winding wire 126U may have a circular appearance, but by making it elliptical, the height of the reed 100 can be reduced, contributing to the weight reduction of the reed 100. Further, when viewed from the side, the upper winding wire 126U is preferably arranged above the first upper edge 130U and the second upper edge 132U and is arranged so as not to overlap the first upper edge 130U and the second upper edge 132U.

[0045] Next, the lower winding wire 126B will be described. The lower winding wire 126B is configured in the same manner as the upper winding wire 126U, and the lower ends of the first reed blade 114 and the second reed blade 116 are alternately arranged.

[0046] Next, the loom reed 100 assembled with the first reed blade 114, the second reed blade 116, the parent blade 118, the upper frame 122, the lower frame 124, the upper winding wire 126U, and the lower winding wire 126B will be mainly described with reference to FIG. 1. In the first embodiment, the first reed blade 114, the second reed blade 116, and the parent blade 118 are respectively arranged in a row at a predetermined interval by the upper winding wire 126U and the lower winding wire 126B. Their upper ends are inserted into the upper groove 122G of the upper frame 122, and their lower ends are inserted into the lower groove 124G of the lower frame 124 and are respectively fixed by an adhesive and integrated. Instead of the adhesive, lead-free solder or the like can be used.

[0047] The parent blade 118 is respectively arranged at the left and right end portions of the upper frame 122 and the lower frame 124. The first reed blades 114 and the second reed blades 116 are alternately arranged at a constant interval (pitch) P1. The pitch P1 is determined by the wire diameters of the lower winding wire 126B and the upper winding wire 126U. In other words, the first reed blades 114 and the second reed blades 116 facing opposite directions are arranged adjacent to each other at a predetermined interval. The first gap 134, which is the interval between the first reed blades 114 and the second reed blades 116, is regulated by the diameter of the winding wire by arranging the first reed blades 114 and the second reed blades 116 between the upper winding wire 126U and the lower winding wire 126L formed of a wire of a predetermined diameter. When the reed 100 for a loom, which is a combination of these, is viewed from the side, the first reed blades 114 and the second reed blades 116 overlap each other, and a predetermined portion becomes the reed beating portion BP. Also, the first laterally concave portion 114D and the second laterally concave portion 116D face each other, and the first rear edge 130B and the second rear edge 132B are separated at a predetermined first interval D1 (FIG. 2(A)).

[0048] Next, the relationship between the first reed blades 114 and the second reed blades 116 and the warp threads 102 (particularly the upper warp threads 102U) will be mainly described with reference to FIG. 1. The first horizontal recess 114D and the second horizontal recess 116D are located above the position of the upper warp 102U at maximum opening. As a result, the upper warp 102U does not come into sliding contact with the first horizontal recess 114D and the second horizontal recess 116D, so they do not damage or cut the warp 102. In particular, since the warps 102 located at the left and right ends of the woven fabric 104 are inclined due to the weaving shrinkage of the pre-woven fabric 112, if the first horizontal recess 114D and the second horizontal recess 116D come into sliding contact with the upper warp 102U, it may have an adverse effect on the warp 102. However, since the first horizontal recess 114D and the second horizontal recess 116D are located above the upper warp 102U, they have the advantage of not having an adverse effect on the warp 102. Of course, the opening amount of the warp 102 is changed according to the woven fabric to be woven. Therefore, in any case of weaving, the upper warp 102U is set at a position where it does not contact the first horizontal recess 114D and the second horizontal recess 116D (when viewing the warp opening from the side, the upper warp 102U does not overlap with the first horizontal recess 114D and the second horizontal recess 116D). The position where the upper warp 102U does not contact the first horizontal recess 114D and the second horizontal recess 116D is a concept that includes a position where the upper warp 102U does not substantially contact the first horizontal recess 114D and the second horizontal recess 116D. That is, the position where the upper warp 102U does not contact the first horizontal recess 114D and the second horizontal recess 116D includes not only the case where the upper warp 102U does not contact the first horizontal recess 114D and the second horizontal recess 116D, but also a position where even if the upper warp 102U contacts the first horizontal recess 114D and the second horizontal recess 116D, substantially no adverse effect occurs on the upper warp 102U.

[0049] Next, the operation and effects of the first embodiment will be described mainly with reference to FIGS. 4 and 5. As shown in FIG. 2(E), in a cross section passing through the reed hitting portion BP of the reed 100 for a loom, the lower portions of the first reed blade 114 and the second reed blade 116 have the same cross-sectional shape and are arranged in a row in the horizontal (weft elongation) direction at the same pitch P1, so that the first reed blade 114 and the second reed blade 116 are arranged at intervals of a predetermined length. The length of the first gap 134 is the first distance AD. In other words, there is a space of the first distance AD between the first reed blade 114 and the second reed blade 116.

[0050] On the other hand, in the first horizontal recess 114D and the second horizontal recess 116D, as shown in FIG. 2(F), since the first connection portion 114J and the second connection portion 116J are displaced in the extension direction of the warp 102, the second gap 136 therebetween has a second distance LD greater than the first distance AD. This second gap 136 has the same dimension between the adjacent first reed blades 114 and second reed blades 116. The third gap 138, which is the interval between the first connection portions 114J of the first reed blades 114 sandwiching the second horizontal recess 116D, is a distance obtained by adding the thickness of the second reed blade 116 to twice the first distance AD. Therefore, the second gap 136 is larger than the first distance AD between the first reed blade 114 and the second reed blade 116 at other portions. Thus, it is easier to pass the knot ball portion K thicker than the normal warp 102.

[0051] Similarly, the fourth gap 142, which is the interval between the second connection portions 116J of the second reed blades 116 sandwiching the first horizontal recess 114D, has the same interval as the third gap 138. Thus, it is also easy to pass the knot ball portion K in the fourth gap 142.

[0052] Next, the operation of passing the knot ball portion K between the first reed blade 114 and the second reed blade 116 of the reed 100 will be described mainly with reference to FIG. 5 and subsidiarily with reference to FIGS. 7 and 8. When passing the knot ball portion K of the warp 102 connected by the knitter through the reed 100, as shown in FIG. 7(A), after setting the reed 100 in a substantially vertical state, while keeping the warp 102 in a low-tension state, it is slowly moved toward the pre-loom 112 side, and the knot ball portion K is passed through the heddle 16 and positioned between the heddle 16 and the reed 100 (FIG. 7(B)).

[0053] Next, further, manually operate the take-up device 28 and the feeding device 34 alternately to relax the warp 102, and then lift the warp 102 on the loom front 22 side of the reed 100 with the palm H so as to scoop it up, and lift it so that the knot portion K faces the second laterally concave portion 116D of the second reed blade 116. During this operation, while confirming the position of the knot portion K with the eye E, make it face the second laterally concave portion 116D of the reed 100 (FIGS. 4 and 7(C)). In this case, since the knot portion K is hidden behind the reed 100, the positional relationship between the knot portion K and the second laterally concave portion 116D is difficult to see.

[0054] Next, move it to the loom front 112 side. By moving the warp 102 to the loom front 112 side, the knot ball portion K is passed between the first reed blade 114 and the second reed blade 116 through the second gap 136 which is the second distance LD between the first laterally concave portion 114D and the second laterally concave portion 116D (FIG. 7(D)). When the knot ball portion K is positioned in the second laterally concave portion 116D between the first reed blades 114, as shown in FIG. 4, it faces the third gap 138 between the first connection portions 114J of the adjacent first reed blades 114. Therefore, the knot ball portion K can easily proceed to the second laterally concave portion 116D.

[0055] When the knot ball portion K advances into the second laterally concave portion 116D, its position can vary. For example, when the knot ball portion K contacts the second upper edge 132U, it is guided by the second upper edge 132U toward the second rear edge 132B side of the second laterally concave portion 116D. Also, when the knot ball portion K contacts the second upper arc edge 116UC, since the curvature of the second upper arc edge 116UC is small, it is immediately guided by the second straight portion 116S to the second upper edge 132U. Moreover, since the second straight portion 116S extends substantially parallel to the moving direction of the knot ball portion K, the knot ball portion K is guided toward the second rear edge 132B side of the second laterally concave portion 116D without receiving a large moving resistance. In other words, the knot ball portion K can be moved without increasing the tension of the warp 102. On the other hand, when the knot ball portion K contacts the second lower edge 132L, it is guided by the second lower edge 132L toward the second rear edge 132B side of the second laterally concave portion 116D. When it contacts the second lower arc edge 116LC, since the curvature of the second lower arc edge 116LC is large, even when it contacts at a position close to the second rear edge 116B of the second lower arc edge 116LC, the knot ball portion K is guided toward the second rear edge 132B side of the second laterally concave portion 116D.

[0056] The knot ball portion K reaches the second gap 136. Since the second gap 136 has a second distance LD that is larger than the first distance AD, the knot ball portion K can pass through the second gap 136 relatively easily. The knot ball portion K that has passed through the second gap 136 is positioned in the fourth gap 142 that is at the same interval as the third gap 138. Therefore, the knot ball portion K can easily pass through the fourth gap 142.

[0057] Next, the knot ball portion K is moved downward, and the warp 102 is positioned in the first gap 134 at the lower part of the first reed 114 and the second reed 116. In this case, since the curvature of the second lower arc edge 116LC is large, the warp 102 can be smoothly guided downward without being caught. This operation is repeated for the weaving width of the woven fabric 104, and all the knot ball portions K are passed between the first reed 114 and the second reed 116.

[0058] Next, the usage example of Example 1 will be described with reference to FIG. 1. First, when a new reed 100 is purchased, as shown in FIG. 1, the first horizontal recess 114D and the second horizontal recess 116D are located at the upper part, and the first opening 130A of the first horizontal recess 114D faces the front of the loom ((The side facing the front of the loom 112 is indicated as "F", and the side opposite to the front of the loom 112 is indicated as "R").) and is used in this arrangement. In this state, since the first connecting portion 114J and the second connecting portion 116J are located above the reed hitting portion BP, the reed 100 has sufficient strength against the reaction force from the front of the loom 112 in the reed hitting motion. Also, since the first horizontal recess 114D and the second horizontal recess 116D are located above the warp threads 102 (upper warp threads 102U) at the maximum opening, the warp threads 102 are not damaged during weaving. In this installed state, when the reed hitting portion BP wears out, the reed 100 is used after being reversed left and right at the next machine change. In this case, the second reed blade 116 becomes the first reed blade 114, and the first reed blade 114 becomes the second reed blade 116.

[0059] The present invention is not limited to the above-described Example 1, and various modifications can be made and implemented within the scope of the invention.

Explanation of Reference Numerals

[0060] 100 Reed 102U Upper warp thread 108 Weft thread 112 Front of the loom 114 First reed blade 114D First horizontal recess 114F, 116B Side edges 114UC, 116UC Upper arc edges 114LC, 116LC Lower arc edges 116 Second reed blade 116D Second horizontal recess 122 Upper frame 124 Lower frame 126 Winding thread 130U, 132U Upper edges 130B, 132B Rear edges 130L, 132L Lower edges C11, C21 Centers R11, R21 Radii R12, R22 Radii Widths W1 and W2 Widths WJ1 and WJ2

Claims

1. A reed (100) for a loom for beating a weft yarn (108) against a front shed (112), comprising a first reed blade (114) having a first laterally concave portion (114D) in a slender and thin plate shape, with a part of a side edge (114F) on the front shed (112) side being open above the upper warp yarn (102U) of the largest opening, and a second reed blade (116) having a second laterally concave portion (116D) with a part of a side edge (116B) on the reverse front shed (112) side being open above the upper warp yarn (102U) of the largest opening. The second laterally concave portion (116D) faces the first laterally concave portion (114D), and they are arranged alternately at a predetermined interval. The upper ends of the first reed blade (114) and the second reed blade (116) are fixed to an upper frame (122), and the lower ends of the first reed blade (114) and the second reed blade (116) are fixed to a lower frame (124) to be integrated. The first laterally concave portion (114D) and the second laterally concave portion (116D) are formed in a semi-circular shape having upper side edges (130U, 132U), lower side edges (130L, 132L), and rear side edges (130B, 132B). The upper side edges (130U, 132U) and the side edges (114F, 116B) are connected by upper arc edges (114UC, 116UC). The lower side edges (130L, 132L) and the side edges (114F, 116B) are connected by lower arc edges (114LC, 116LC). The curvature of the lower arc edges (114LC, 116LC) is greater than the curvature of the upper arc edges (114UC, 116UC). The reed for a loom is characterized by this.

2. The centers (C11, C21) of the semi-circular shapes of the first laterally concave portion (114D) and the second laterally concave portion (116D) are located within the widths (W1, W2) of the first reed blade (114) or the second reed blade (116). The reed for a loom according to Claim 1, characterized by this.

3. The reed for a loom according to Claim 1 or 2, characterized in that the first reed blade (114) and the second reed blade (116) have the same shape.

4. The distance between the first reed blade (114) and the second reed blade (116) is defined by a wound wire (126) having an elliptical appearance. The reed for a loom according to any one of claims 1 to 3, characterized in that.

5. The wound wire (126) is disposed above the upper arc edges (114UC, 116UC). The reed for a loom according to claim 4, characterized in that.

6. The widths (W1, W2) in the extension direction of the warp threads (102) of the first reed blade (114) and the second reed blade (116) are 12 millimeters. The radii (R11, R21) of the semi-circular shapes of the first lateral recess (114D) and the second lateral recess (116D) are 6 millimeters. The widths (WJ1, WJ2) of the first reed blade (114) or the second reed blade (116) passing through the centers of the radii (R11, R21) and orthogonal to the side edges (114B, 116F) of the first reed blade (114) or the second reed blade (116) are 4 millimeters. The radii (R12, R22) of the upper arc edges (114UC, 116UC) are 0.5 millimeters. The radius of the lower arc edges (114LC, 116LC) is 3 millimeters. The reed for a loom according to claim 1, characterized in that.

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