JPH0248455Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) This invention relates to a plain loom in a loom.

(Prior Art) Generally, woven fabrics are obtained by threading the weft threads 3 through a plurality of warp threads 2 arranged vertically while changing the top and bottom, as shown in Fig. 8a.
For this purpose, as shown in figure b, the warp threads 2 are alternately and regularly distributed vertically, a shed path S is created between the upper thread 2a and the lower thread 2b, and the weft thread 3 wound around the shuttle 40 is passed through. A mechanism is adopted in which the weft threads 3 are moved toward the front and driven in.

However, in the case of conventional plain weaving, the mechanism for distributing warp threads one by one alternately was often complex, and simplification was desired.

(Purpose of the invention) This invention was developed in view of the above-mentioned circumstances, and the purpose is to propose a plain weaving mechanism for a hand loom that can easily perform plain weaving using sheets.

(Means for achieving the object) In order to achieve the above object, the plain weaving mechanism in the handloom according to the present invention is characterized by having the following requirements.

(a) The main body of the handloom shall be provided with a support that can be moved up and down to support the thread hook for hanging the warp threads.

(b) The thread hanging device should engage approximately in the middle of each warp yarn stretched on the main body of the handloom, and pass through the support body.

(c) At a position of the support body facing below the thread hook, there is a plain weave sheet in which drop holes for the thread hook are arranged at intervals of every other thread hook. be installed so that it can be moved vertically or horizontally.

(d) The handloom main body is provided with a groove wheel that rotates in conjunction with the vertical movement of the support, and a wave-shaped sliding groove is continuously formed on the outer peripheral surface of the groove wheel, and the above-mentioned A sliding shaft to be inserted into the wave-shaped sliding groove of the grooved wheel is formed below the plain weave sheet.

(E) The width of the waves formed by the above-mentioned sliding grooves shall be the same as the interval between adjacent thread hooks.

(f) The groove wheel is formed so that it rotates by half the wavelength of the wave when the support moves upward.

(Operations and effects of the invention) In the above configuration, when the groove wheel rotates in conjunction with the upward movement of the support, the sliding shaft slides in a waveform along the sliding groove on the outer circumferential surface of the groove wheel. Moreover, when the support moves upward, the groove wheel is formed so that it rotates by half the wavelength of the wave formed by the sliding groove, and the width of the wave is equal to the distance between adjacent thread hooks. Since they are identically formed, the sliding shaft and the plain woven sheet move by one warp stitch. The pit holes are formed at intervals of every other thread hook, that is, twice the amount of movement of the plain weave sheet, so in short, the plain weave sheet is
Move by the distance from the pithole to the part without the pitfall or from the part without the pitfall to the pitfall. On the other hand, when the support is moved downward and then upward after threading the weft, the sliding shaft and the plain weave sheet move in the same way, but the moving direction is opposite to the previous direction.

Therefore, the thread hooks facing the lower end of the plain weave sheet alternately face the pit holes every other time the support moves upward, and the thread hooks also fall into the pit holes. Since the warp yarns and the non-falling yarns are arranged alternately, the warp yarns are distributed alternately upward and downward accordingly, thereby making it possible to easily perform plain weaving.

In addition, it is also possible to form drop holes in the plain weave sheet so that lines connecting the drop holes have a zigzag shape, and to move the plain weave sheet back and forth in the longitudinal direction along the warp.

(Example) Hereinafter, an example of this invention will be described with reference to the drawings.

In the figure, symbol A indicates a handloom. In this handloom A, a plurality of warp threads 2 are stretched on a main body 1 in advance, and a warp thread distribution device provided approximately in the middle distributes the warp threads 2 upward and downward, and also distributes upper and lower threads 2a, 2b. After passing the weft thread 3 through the shuttle S formed between them, the distribution of the warp threads 2 is changed again and passing through the gutter from the opposite side is repeated. A piece of cloth is woven by passing the weft thread 3 through.

The warp threads 2 are stretched parallel to winding rods 1a and 1b at the front and rear portions of the main body 1.

The distribution device for vertically distributing the warp threads 2 includes a swingable support 5 which passes through a plurality of thread hooks 4 that engage the warp threads 2 and holds the warp threads 2 in a vertically movable manner at approximately the middle of the main body 1. A guide passage 7 is provided at the lower part of the support body 5 to guide the punch sheet 6 so as to be movable back and forth along the two warp directions, and the part of the guide passage 7 facing the thread hook 4 is open. Furthermore, it is constructed by providing a feeding mechanism that advances the punch sheet 6 by one horizontal row of punch holes, which will be described later.

First, the support body 5 is formed to be able to swing freely by forming a plurality of guide grooves 10 on the upper surface of the distal end thereof and having pivot shafts 11 attached to both sides of the main body 1 on the outer side of the proximal end. There is.

The thread hook 4 has a thread hook 13 formed in the upper part of a body part 4a whose cross section corresponds to the guide groove 10, a bar-like leg part 14 in the lower part, and a retainer 15 in the body part 4a. It is formed to protrude laterally and is fitted into the guide groove 10 of the support body 5 so as to be vertically movable. At this time, the thread hook 4 is configured to be prevented from slipping out from the support body 5 by a stopper 15.

16 indicates a marker. The marker 16 includes a body portion 16a and a rod-shaped leg portion 1 having the same configuration as the thread hook 4.
7, and a thread locking piece 18 is formed on the upper part of the body portion 16a. The markers 16 are normally fitted into guide grooves 10 on both outer sides of the support 5 so as to be vertically movable.

The guide passage 7 is formed by attaching an upper plate member 7a and a lower plate member 7b to the main body 1 one above the other, and is open at the front and rear ends. In addition, the guide passage 7 has a support 5.
There is an opening 19 in the part facing the thread hook 4 attached to the
is formed. Furthermore, guide pieces 20 for a plain weave sheet, which will be described later, are formed on both sides thereof.

Feed holes 21 are formed in vertical rows at regular intervals on both sides of the punch sheet 6, and marker drop holes 22 are formed alternately every other feed hole 21 on both sides of the punched sheet 6. Hanging drop holes 23 are formed in vertical and horizontal rows along the feed hole 21. The spacing between the horizontal rows of the threading drop holes 23 is set according to the upper and lower yarn distribution of the warp threads 2, and the part where the drop holes 23 are formed is the part where the bobbin threads 2b are formed; The portion 23a that is not covered is a portion where the needle thread 2a is formed.

Next, the punched sheet 6 inserted into the guide path 7 is advanced by the feeding mechanism. This feeding mechanism is constituted by the rotation of a gear that is interlocked with the upward movement of the support 5. First, handles 24 are swingably provided on both sides of the main body 1, and a cam 25 is formed on the handles 24. The cam 25 is provided facing the cam receiving shaft 12 of the support body 5,
By swinging the handle 24, the cam 25
pushes up the cam receiving shaft 12, thereby causing the support body 5 to move upward. At this time, a claw 26 urged by a screw 27 is provided on the side of the support body 5, and the claw 26 meshes with a ratchet wheel 28 formed on the side of the main body 1. The ratchet wheel 28 and the coaxial shaft 31 have protrusions 2 on the outer peripheral surface that are equal to the spacing between the feed holes 21 of the punch sheet 6.
It is fixed from a feed wheel 30 provided with 9. Further, the feed wheel 30 is connected to the feed holes 2 on both sides of the punch sheet 6.
A protrusion 29 is provided to engage with the lower part of 1. Therefore, when the support 5 moves upward, the claw 2
6 rotates the ratchet wheel 28 by a predetermined rotation angle, and as the feed wheel 30 rotates in conjunction with this, the protrusion 29 that engages with the feed hole 21 of the punch sheet 6 moves the punch sheet 6 by one feed hole. Postpone.

Note that the punch sheet feeding mechanism is not necessarily limited to the one described above. Any other mechanism may be used as long as the punch sheet 6 is advanced by one feed hole 21 in conjunction with the upward movement of the support body 5.

When using handloom A with the above configuration,
First, the handle 24 is operated to move the support body 5 upward and the punch sheet 6 is inserted into the guide passage 7, and then the handle 24 is returned to its original position. At this time, the thread hook 4 descends onto the opening 19 of the guide passage 7. Since the opening 19 faces the first horizontal row of holes 23 of the punched sheet 6, the leg portion 14 of the thread hook 4 facing the hole 23 falls into the hole 23. It sinks. Those not facing the drop hole 23 are held in the same position because the legs 14 touch the upper surface of the punch sheet 6. In this way, by distributing the thread hooks 14 vertically, the warp threads 2
It is also distributed vertically. Therefore, by distributing the thread hooks 14 vertically, the warp yarns 2 are also distributed vertically. Therefore, these upper and lower threads 2a,
Pass the shuttle between 2b. After that, when the handle 24 is swung, the feed mechanism is activated and the punch sheet 6 is advanced by the next horizontal row.
When it is returned to its original position, the thread hook 4 and the warp threads 2 are distributed vertically according to the punched holes 23 as described above, and the shuttle is inserted through the threads on the opposite side. By sequentially repeating this operation, the texture pattern of the pattern formed by the punch sheet 6 is completed.

Next, according to the punched sheet 4, in addition to the vertical distribution of the warp threads 2, the markers 16 also move up and down along the drop holes 22 of the punched sheet 6. Therefore, by attaching a piece of the weft thread actually used to the upper end of this marker 16, it is possible to fully confirm whether the feed has been carried out when this marker 16 goes up, and which color thread will be woven next. Can be done.

Next, the handloom is equipped with a plain weaving mechanism.

This plain weave mechanism is comprised of a plain weave sheet and a drive mechanism that utilizes the punch sheet feeding mechanism.

That is, as shown in FIG. 2, the plain weave sheet 32 has drop holes 23 for the thread hooks 4 arranged at intervals of every other thread hook, and
A sliding shaft 33 is formed on the lower surface of one end, and by engaging with the guide piece 20 for the plain weave sheet 32 on the upper plate 7a of the guide passage 7, it can be positioned at a position facing below the thread hook 4. It is provided so as to be movable in the lateral direction (direction perpendicular to the warp threads) with respect to the warp threads 2.

Further, the handloom main body 1 is rotatably provided with a gear 34 that meshes with a gear 37 fixed to the end of the shaft 31 of the pawl gear 28 constituting the feeding mechanism, and is coaxial with the gear 34. A groove wheel 35 is fixed to. A wave-shaped sliding groove 36 is continuously formed on the outer peripheral surface of the groove wheel 35, and a sliding shaft 33 formed below the plain weave sheet 32 is inserted into the sliding groove 36. The width of the wave formed by the sliding groove 36 is the same as the interval between adjacent thread hooks 4, and the groove wheel 35 is configured to wave the wave when the support 5 moves upward. It is formed so that it rotates by half the wavelength of . In the above configuration, the feed mechanism operates in conjunction with the vertical movement of the support body 5, and at the same time, the gear 34 and the groove wheel 35 also rotate. When the support body 5 moves upward, the groove wheel 35 rotates, and the sliding shaft 33 moves along the sliding groove 36 on the outer peripheral surface of the groove wheel 35.
slides in a waveform. Moreover, when the support body 5 moves upward, the groove wheel 35 is formed so as to rotate by half the wavelength of the wave formed by the sliding groove 36, and the width of the wave is the same as that between the adjacent thread hooks 4. Since the spacing is the same as that between the two, the sliding shaft 33 and the plain weave sheet 32 move by one stitch of the warp yarn 2. The pit holes 23 are formed at intervals of every other thread hook, that is, twice the amount of movement of the plain weave sheet 32. It moves by the distance from the part without the hole to the pit hole 23. On the other hand, when the support body 5 is moved down after passing the weft thread 3 and then moved up, the sliding shaft 35 and the plain weave sheet 32 move in the same way, but the direction of movement is opposite to that before. become the direction.

Therefore, the thread hooks 4 facing the lower end of the plain weave sheet 32 alternately face the drop holes 23 every other time the support 5 moves upward, and the thread hooks 4 also face the drop holes 23. Since the yarns 23 that have fallen and those that have not fallen are arranged alternately, the warp yarns 2 are accordingly alternately distributed vertically, thereby making it possible to easily perform plain weaving.

In addition, it is also possible to form drop holes in the plain weave sheet so that lines connecting the drop holes have a zigzag shape, and to move the plain weave sheet back and forth in the vertical direction along the warp.

[Brief explanation of the drawing]

Figure 1 is an overall view of the handloom according to this invention, Figure 2
The figure is an exploded perspective view of the main parts of the handloom, Figure 3 is an explanatory diagram of the vertical movement mechanism of the support, Figure 4 is an explanatory diagram of the punch sheet feeding mechanism, and Figure 5 is an enlarged perspective view of the thread hook. Figures 6a and 6b are explanatory diagrams of the operation of the thread hook, Figure 7 is an explanatory diagram of the sliding state of the plain weave sheet, and Figures 8a and b are diagrams that explain the principle of the woven fabric. Code A...Hand loom, 1...Main body, 2...Warp, 3...Weft, 4...Year hook, 5...Support, 6...Punch sheet, 7...Guide path, 13...Year thread groove, 14...Legs, 16... marker, 19... opening, 20... guide piece for plain weave sheet, 21... feed hole, 22... drop hole for marker, 23... drop hole, 28... ratchet wheel, 30...
Feeding wheel, 32... Plain weave sheet, 33... Sliding shaft, 3
5...Groove wheel, 36...Sliding groove.

Claims (1)

[Scope of Claim for Utility Model Registration] A plain weaving mechanism for a hand loom characterized by having the following requirements. (a) The main body of the handloom shall be provided with a support that can be moved up and down to support the thread hook for hanging the warp threads. (b) The thread hanging device should engage approximately in the middle of each warp yarn stretched on the main body of the handloom, and pass through the support body. (c) At a position facing below the thread hook of the support, a plain weave sheet is provided with holes for the thread hook arranged at intervals of every other thread hook. be installed so that it can be moved vertically or horizontally. (d) The handloom main body is provided with a groove wheel that rotates in conjunction with the vertical movement of the support, and a wave-shaped sliding groove is continuously formed on the outer peripheral surface of the groove wheel, and the above-mentioned A sliding shaft to be inserted into the wave-shaped sliding groove of the groove wheel is formed below the plain weave sheet. (E) The width of the waves formed by the above-mentioned sliding grooves shall be the same as the interval between adjacent thread hooks. (f) The groove wheel is formed so that it rotates by half the wavelength of the wave when the support moves upward.