JP6532014B2 - Tatami cutting machine - Google Patents

Description

  The present invention relates to a tatami mat cutting machine. More specifically, the present invention relates to a tatami sheet cutting machine that conveys the tatami sheet while detecting the valleys of the eye of the tatami sheet and cuts it along or in parallel to the valleys of the tatami sheet.

  In the case of a tatami mat woven with weed yarn and yarn, there is an ear called a weir which is formed by the woven portion through which the warp passes and the end portions of the spinach protruding from both sides of the woven portion. It is well known that parts exist. (For example, FIG. 7 of Patent Document 1)

  Then, as shown in FIG. 4 of Patent Document 1, a guiding device for guiding the tatami sheet placed in the receiving basket while centering by restricting the positions of the left and right (width direction), and the tatami sheet so as to sandwich the tatami sheet. It is disposed between a folding surface feeding device including a feed roller and a pressing roller, a cutting device provided on the outlet side of the folding surface feeding device, and a guiding device and the folding surface feeding device to cut the beard portion of the folding surface. A conventional tatami table cutting device is known which is constituted by a beard cutting device comprising a rotary blade.

  The feed roller and the rotary blade of the whisker cutting device are driven by the main motor, and an encoder for measuring the length of the tatami mat surface to be fed is connected to the shaft end on one side of the press roller. A measurement signal is sent to a control device (not shown), and on the outlet side of the feed roller, there is provided a cutting blade for cutting the tatami sheet in the width direction. Can be reciprocated in the width direction) and driven by a cutting motor. The control signal is controlled by the controller to count the measurement signals from the encoder and to stop the main motor when the set length is reached, and to start the cutting motor.

  In order to solve the problems of the above-described conventional tatami-sheet cutting machine, in a tatami-sheet cutting device having a cutting blade attached to a slider and a blade guide rail for causing the slider to travel in the cutting direction, a horizontal frame arranged in the cutting direction The applicant of the present invention has proposed a tatami-sheet cutting device (patent document 1) characterized by comprising a pressing link mechanism including a pressing lever provided on the lateral frame.

  Further, the tatami sheet comprising a weft yarn and a woven part woven with warps and a beard part formed by the ends of the cocoons protruding from both sides of the woven part is sent in the longitudinal direction and cut at a predetermined length In the tatami mat surface cutting machine, the core rod, a rotating body fitted with a space in the core rod, a guide portion radially projected from the rotating body, and an introducing portion inclined with respect to the shaft center A proposal has also been made for a tatami sheet cutting machine (Patent Document 2) characterized by comprising a tatami sheet guiding device for centering a tatami sheet made up of a plurality of guide rods.

Unexamined-Japanese-Patent No. 09-109088 gazette Unexamined-Japanese-Patent No. 09-109093 gazette

  In the tatami surface cutting machine of Patent Document 1 or Patent Document 2 disclosed above, the guiding device for centering the tatami surface (described in FIG. 4 of Patent Document 1) or the inclined guide rod attached to the rotating body in the guiding device Both sides of the woven part of the tatami mat slide along the introductory part and abut on the inside of the guide part to center the tatami mat surface, but guide the end of the tatami mat surface regardless of the eyes of the tatami mat surface Since it is a thing, it had the subject that it could not cut along with or parallel to the valley of the weave of the tatami mat surface due to the variation in the degree of weave of the end and the contact with the guide device. When cutting the tatami mat surface, tension is not applied to the warp of the tatami mat surface, and the valleys of the eyes of the tatami mat surface may meander without being conveyed in a straight line. It also had the problem that it could not be cut parallel along the valleys of the texture of the mat or mat surface.

  When manufacturing tatami mats, the edge of the tatami edge is sewn on the tatami edge so that the valley of the tatami surface is hidden, which is called "seeing" and "makes the eye" "seeing" The valley of the eyes of the tatami table is in a straight line with the “Tatami of eyelids” etc., and the tatami edge is sewn on to create a tatami with a good finish.

Therefore, when cutting a tatami sheet in a tatami sheet cutting machine, there is a demand for cutting along the valley of the eye of the tatami table or cutting along the valley of the eye of the tatami table.

In order to solve the above-mentioned problems, the present invention transports a tatami sheet and performs cutting in the width direction of the tatami sheet. A sensor for detecting the height or depth of the valley of the eyes of the tatami sheet in a tatami sheet cutting machine. A sensor for detecting the height or depth of the slope of the grass at a position equidistant from or substantially equidistant from the valley of the eye from the valley of the eye; Depth data, height or depth data of slope of Iris grass at the position of width direction right of valley of Tatami Table, height of inclination of Iris slope at position of width direction left of Tani at eye width of valley It is detected from the height or depth data whether it is conveyed along the valley of the eye of the tatami table or parallel to the valley of the eye of the tatami table, and each of the above-mentioned sensors Acquisition of measurement data of each, and calculating the average value of the measurement data acquired by each Tatami facing parallel to the eye of the valley of the state or tatami facing along the valley and detects whether the conveyed.

  Further, each of the above-mentioned sensors is characterized in that it is arranged being shifted in the conveyance direction of the folding table so that the spots of measurement do not interfere with each other.

Furthermore, when it is determined that the tatami surface is meandering to the right or left side by the detection of the valleys of the eyes of the tatami surface, the conveyance correction mechanism of the tatami surface is provided on the opposite side to the meandering direction. .

  According to the present invention, a sensor for detecting the height or depth of the valley of the eye of the tatami mat, and the slope portion of the grass at a position equidistant from or substantially equidistant from the valley of the eye And a sensor for detecting height or depth, height or depth data of the valley of the eye of the tatami table, height or depth of the slope of the grass on the right side in the width direction of the valley of the eye of the tatami table By detecting whether or not the tatami table is transported along the valley of the eye of the tatami table from the height data and the height or depth data of the slope of the grass on the left side of the valley of the eye of the tatami table in the width direction It is possible to cut along or parallel to the valley of the eye of the tatami mat surface.

  When the spots of the respective sensors are shifted in the transport direction, the transport distance is detected, and the valleys of the tatami table can be detected with high accuracy if the valleys of the tatami table are detected in the same grass portion. In addition, it may be carried out with the measurement data in the state where the spots are shifted further, or a predetermined number of measurement data are acquired during a predetermined time during conveyance of the tatami mat surface, and the average value of the measurement data acquired by each sensor is calculated. Then, it is possible to cut the tatami table by detecting whether the tatami table is conveyed along the valleys of the eyes of the tatami table.

Furthermore, when it is determined that the tatami table is meandering to the right or left by the detection of the valley of the tatami table, the conveyance correction mechanism of the tatami table detects the valley of the tatami table by shifting the tatami table to the opposite side to the meandering direction. Since it can be corrected to the above state, it is possible to cut the tatami table along or parallel to the valleys of the eyes of the tatami table.

It is a front view of the tatami sheet cutting machine of the present invention. It is a side view of the tatami sheet cutting machine of the present invention. In FIG. 2, the first sensor, the second sensor, and the third sensor are not shown in the state of being visible. It is a top view of the tatami sheet cutting machine of the present invention. It is a figure explaining the detection means of the valley of the eyes of a tatami sheet. (A) It is a figure explaining the state which irradiated the spot from the detection means of the valley of the eye of a tatami table on a tatami table, (b) is a figure explaining the weave of the grass on the surface of a tatami surface. It is a figure explaining the detection of the valley of the eye of a mat surface by a 1st sensor, the 2nd sensor, and the 3rd sensor. (A) is a diagram for explaining a state in which the spot of the second sensor matches the valley of the eye of the tatami table, (b) is a diagram for explaining a state in which the tatami table starts to shift to the right, (c) is A diagram for explaining the state where the valley of the tatami table has reached the spot of the first sensor with the tatami table shifted further to the right from the state of b), (d) explains the situation where the tatami table T has started to shift to the left The figure (e) is a figure explaining the state where the valley of the eye of a tatami table reached the spot 13 of the 3rd sensor, shifting a tatami table further to the left from the state of (d).

  An embodiment of the tatami sheet cutting machine 1 of the present invention will be described using the drawings. FIG. 1 is a front view of the tatami sheet cutting machine 1 of the present invention, FIG. 2 is a side view of the tatami sheet cutting machine 1 of the present invention, and FIG. 3 is a plan view of the tatami sheet cutting machine 1 of the present invention.

  The two-dotted chain line shown in FIG. The folding table T is set by a core rod 4 in a roll-shaped folding table holding means 3 provided on the frame 2 and the folding table T is transported along a transport path shown by a two-dot chain line in FIG.

  5 is a top front cutting blade that cuts the top front side of the front face T, and 6 is a bottom front cutting blade. The upper front cutting blade 5 is rotationally driven by a motor 5a, and the lower front cutting blade 6 is rotationally driven by a motor 6a. Further, the lower front cutting blade 6 is configured to be able to adjust the fixed position to the left and right, and adjustment of the width dimension of the folding table T to be cut is possible. The adjustment of the fixed position is performed by using a manually operable fastening means such as a knob bolt.

  7 is a tatami mat surface feed roller, 8 is a tatami sheet surface measuring roller. The tatami sheet measuring roller 8 is moved up and down by the cylinder 8a, raised when setting the tatami sheet T, and lowered by the cylinder 8a when cutting the tatami sheet T, by the weight of the tatami sheet measuring roller 8 between the tatami sheet feeding roller Hold the Tatami mat. Although not shown in the figure, the encoder or slit disk is detected by a sensor, and the transport length of the tatami sheet T is measured by detecting the number of slits passing through the sensor. The reference numeral 20 denotes a table on which the folding table T is placed, and the reference numeral 21 denotes a cutting device for moving the folding table T in the width direction and cutting it when the folding table T having a set length is conveyed. Reference numeral 22 denotes a tatami (front) sheet presser for lowering the tatami sheet T when the tatami sheet T is to be cut by the cutting device 21.

  9 is a transport correction mechanism for the Tatami table T. When the valley of the Tatami table T is not conveyed straight in a straight line with the upper front cutting blade 5, the Tat matrix correction is carried out in the width direction of the Tachigata table. Is a mechanism to

  The conveyance correction mechanism 9 includes a correction roller 9b driven by a rotation drive source 9a (for example, a motor), an elevating pinch roller 9c provided on the upper part of the correction roller 9b so as to be able to move up and down, and a correction roller 9b by a swing fulcrum 9d. It is comprised from the rocking | fluctuation actuator 9e made to rock | fluctuate. The lifting and lowering pinch rollers 9 c are configured to be lifted and lowered by lifting and lowering cylinders 9 f provided at the left and right ends of the tatami surface cutting machine 1.

  The reference numeral 10 denotes a means for detecting the valleys of the eye of the T-shaped table T, and three non-contact distance sensors are provided to the T-shaped table T as shown in FIG. The three sensors are viewed from the side, and the spots for measurement are schematically illustrated from the plan.

  As shown in FIG. 5 (a), in order to detect the valley of the eye of Tatami mat T, the spot 11a of the first sensor 11 is the texture of the grass on Tatami mat T immediately to the right of the valley of T's eye Irradiates the part where the angle is steep. The spots 12 a of the second sensor 12 are irradiated to the valleys of the eyes of the tatami table T. The spot 13a of the third sensor 13 is applied to a portion where the grass of the tatami table T located immediately to the left of the valley of the tatami table T has a steep angle (see FIG. 5B). The space between the spots 11a and the spots 13a in the width direction of the folding table T with respect to the spots 12a is 1 mm.

  In the case where the first sensor 11 and the third sensor 13 are installed at an angle θ in order to irradiate the spots 11a, 12a and 13a in the state of FIG. 5, the irradiation is performed vertically like the second sensor 12 Since the measurement distance between the first sensor 11 and the third sensor 13 is not multiplied by cos θ, the heights of the spot 11a and the spot 13a may be calculated. The angles of the first sensor 11 and the third sensor 13 may be different angles, but in order to arrange spots from the valleys of the tatami table T to places of the same size, the angles are the same angle Is desirable. Then, height data of the folding table T at positions where the spots 11a, 12a, 13a are irradiated is acquired.

  The spots 11a, 12a and 13a are desired to be arranged side by side in the width direction of the tatami table T, but when the spots are close, they interfere and the height of the spot on the tatami table T can not be detected. Only the distance which does not have is provided with respect to the conveyance direction.

  This distance is, for example, an interval of about 2 to 4 mm, and the conveyance distance of the tatami sheet T can be measured by the tatami sheet measuring roller 8 described above, so the grass of the height Y1 of the spot 11a detected by the first sensor is measured. Measure the height Y2 of the spot 12a when conveyed to the position of the second sensor 12, and the height of the spot 13a when the grass of height Y1 is conveyed to the position of the third sensor 13 Measure Y3 and make it data. By acquiring such data, it is possible to detect based on the measurement data of the same grass in the width direction even if the grass of the tatami table T is folded or attached. .

  In addition, since the tatami mat surface T weaves natural grasses or weaves artificial grasses, this weave has some variations. In addition, although the diameter of the artificial grass is almost equal, in the case of natural grass, the cross section is circular or even elliptical, resulting in variations.

  Therefore, the valleys of the eyes of the Tatami table T are detected from the measurement of the height data Y1, Y2 and Y3. However, the variation of the grass itself and the variation of the weave affect the detection of the valleys of the eyes of the Tatami table T It is necessary not to.

  Therefore, the size of the spot of the sensor is set to a size of about two grasses (for example, 0.8 to 1.5 mm) in the transport direction of the T-table, and 0 in the width direction of the T-table. It is about 3 to 1 mm. If the size is about 2 grasses in the direction of conveyance, the round unevenness of grasses will not be measured finely, and the highest position of Tatami will be measured at the spot where the spots hit. be able to. Of course, it may be a spot having a length of about 5 mm in the transport direction.

  Next, the acquisition interval X of the data of height data Y1, Y2, Y3 and the acquisition number Z are determined, and the average data of height data Y1, Y2, Y3 is determined as YA1, YA2, YA3. Assuming that the transport speed of the folding list T is S, the distance by which the folding list T moves can be calculated while obtaining the number of Z pieces, and the distance is made to be 5 to 10 mm. By averaging the height data Y1, Y2 and Y3 acquired between 5 and 10 mm to obtain YA1, YA2 and YA3, respectively, the influence of the unevenness of grass and the unevenness of the weave of the tatami table T can be avoided. is there.

  At this time, due to the unevenness of the texture of Tatami T, the texture on the left or right side of the valley has jumped out to the valley part of Tatami T, but the acquired number Z is several tens As data Y1, Y2 and Y3 of the part of the state that Ikus has popped out to the eye valley of T-table, the numerical value of Y1 or Y3 and the numerical value of Y2 are clearly the height from the table 20 surface Since it becomes a high numerical value, it is possible to improve the accuracy by calculating the average data YA1, YA2 and YA3 by averaging them excluding the data Y1, Y2 and Y3 when making the average data.

  The detection of the valley of the eyes of the tatami table T using the average data YA1, YA2, and YA3 acquired as described above will be described.

  The state shown in FIG. 6A shows a state in which the spot 12 a matches the valley of the eye of the tatami table T. At this time, since the average data YA2 has a minimum value, the tatami table T is transported as if the valleys of the eyes of the tatami table T are detected even if the average data YA1 and the average data YA3 have variations.

FIG. 6 (b) is a diagram showing a state where the tatami list T starts to shift to the right. Since the valleys of the eyes of the tatami list T are shifted to the right side of the spots 12a, the average data YA1 at that time becomes smaller than that in FIG. 6A, and YA2 and YA3 become larger. Assuming that the average data is YB1, YB2 and YB3 so that they can be distinguished from the data in FIG.
It becomes YB1 <YA1, YB2> YA2, YB3> YA3,
And YB3> YB1
Relationship. From this data, it can be detected that the table T is shifted to the right.

FIG. 6C is a diagram showing a state in which the valley of the eyes of the tatami table T reaches the spot 11 a of the first sensor 11 with the tatami table T shifted further to the right from the state of FIG. 6B. Assuming that the average data is YC1, YC2 and YC3, respectively, so as to be distinguishable from the data in FIGS. 6 (a) and 6 (b),
YC1 <YA1, YC2> YA2, YC3> YA3
And YC3>YC2> YC1
Relationship. From this data, it can be detected that the table T is shifted to the right. Actually, the spot 11a becomes lower than the spot 12a before the valley of the eye of the tatami sheet T reaches the spot 11a of the first sensor 11, and the average data YC3>YC2> YC1 is obtained. It can be detected that the position is further shifted to the right than the position of.

FIG. 6D is a diagram showing a state where the tatami list T has started to shift to the left. Since the valleys of the eyes of the tatami list T are shifted to the left side of the spots 12a, the average data YA3 at that time becomes smaller than that in FIG. 6A, and YA2 and YA1 become larger. Assuming that average data are YD1, YD2 and YD3 respectively so as to be distinguishable from the data in FIG.
It becomes YD1> YA1, YD2> YA2, YD3 <YA1,
And YD3 <YD1
Relationship. From this data, it can be detected that the table T is shifted to the right.

FIG. 6E is a view showing a state in which the valleys of the eyes of the tatami table T have reached the spots 13a of the third sensor 13 with the tatami table T shifted further to the left from the state of FIG. 6D. Assuming that the average data is YE1, YE2, and YE3, respectively, so as to be distinguishable from the data in FIGS. 6 (a) and 6 (d),
YE1> YA1, YE2> YA2, YE3 <YA3
And YE3 <YE2 <YE1
Relationship. From this data, it can be detected that the table T is shifted to the left. Actually, the spot 13a becomes lower than the spot 12a before the valley of the eye of the tatami sheet T reaches the spot 13a of the third sensor 13, and the average data YE3 <YE2 <YE1 is obtained. It can be detected that the position is further shifted to the left than the position of.

Next, the operation of the tatami sheet cutting machine 1 of the present invention will be described.
To set the tatami sheet T in the tatami sheet cutting machine 1, set the tatami sheet T in the tatami sheet holding means 3 with the core rod 4, raise the lifting pinch roller 9 c and the tatami sheet measuring rotor, and cut the upper front cutting blade 5 While rotating the lower front cutting blade 6, the tip of the tatami table T is fed to a place where it can be pinched by the tatami front feed roller 7 and the tatami table measuring roller 8. At this time, the position of the conveyance correction mechanism 9 is aligned, and the tatami table T is set so that the spot 12a matches the valley of the eye of the tatami table T. It is preferable to set in advance the length to be cut and adjust the position of the lower front cutting blade 6 with respect to the upper front cutting blade 5.

  When the setting of the folding table T is completed, the lifting and lowering pinch roller 9c and the folding table measuring roller are lowered to pinch the folding table T, respectively.

  The tatami sheet cutting device 1 starts cutting the tatami sheet T with the operation switch (shown).

  At this time, until the cutting is started, the operator aligns the spot 12a with the valley of the eye of the tatami table T and sets the tatami table T while checking the spots 11a and 13a, so when the operation switch is pressed It is also possible to use the values of Y1, Y2 and Y3 as a reference value for control.

  If the conveyance of the tatami sheet T can be performed straight, the tatami sheet T is conveyed and cut in the state of FIG. 6 (a). When the folding table T starts to shift to the right as shown in FIG. 6 (b), the swing actuator 9e is operated. Specifically, the rod of the swing actuator 9e is extended, and the right end of the correction roller 9b is pivoted around the swing fulcrum 9d so as to move away from the table 20, and the folding table T is shifted to the left. Even in the case of deviation as shown in FIG. 6C, the rod of the swing actuator 9e is further extended.

  Conversely, when the folding table T starts to shift to the left as shown in FIG. 6D, the rod of the swing actuator 9e is contracted and the swing fulcrum 9d is moved so that the right end of the correction roller 9b approaches the table 20. Pivot the center so that the tatami mat table T moves to the right. Even in the case of deviation as shown in FIG. 6 (e), the rod of the swing actuator 9e is further reduced.

  As described above, when the valley of the eye of the folding table T is separated from the spot 12a and starts to meander, the correction roller 9b is pivoted about the rocking fulcrum 9d to prevent the meandering. In the detected state, it conveys only the set length and cuts it. When the valley of the eye of the tatami sheet T is deviated from the spot 12 a and starts to meander, it is parallel to the valley of the eye of the tatami sheet T, or along the valley of the eye of the tatami sheet T, so as to prevent the serpentine of the tatami sheet T. Cut into Tension is slightly applied to Tatami T during transportation, but the valley of Tatami's T is often conveyed without being straight, so the conveyance of Tatori T is corrected so that it conforms to the curve. By carrying out by the transport mechanism 9, it becomes possible to cut along the valley of the eye of the tatami table T or in parallel to the valley of the eye of the tatami table T. Tension is applied to the tatami floor by applying tension more strongly to the tatami floor than the tension at the time of cutting the tatami floor by cutting while detecting the valleys of the tatami table T, the warp of the tatami table is also tensioned, and the eyes of the tatami table T The valley of the tatami mat is finished with good linearity, and the linearity of the cut portion of the tatami sheet T cut along the valley of the tatami sheet T or in parallel to the tine of the tatami sheet T is also in a good state.

  The rocking actuator calculates which of the states shown in FIG. 6 (a) to FIG. 6 (e) described above with the control device (not shown) every time the average data YA1, YA2 and YA3 are calculated. , Controls the operation of the swing actuator 9e. Therefore, the swing actuator 9e employs an actuator with high responsiveness.

  When the conveyance of the set length is completed, the conveyance of the folding table T is stopped, the folding table holder 22 is lowered, and the folding table T is cut in the width direction by the cutting device 21.

  In the above description, detection of the valley of the eyes of the tatami table T in comparison of the data of the average data YA1, YA2, YA3 has been described, but the calculated values of YA1-YA2 and YA3-YA2, ie, the heights of the spots 11a and 12a By comparing the difference in height with the difference in height between the spots 13a and the spots 12a, it is judged that the paper can be transported along the valley of the eye of the tatami sheet T if there is no difference in height, “calculated value of YA1-YA2 If the calculated value of "YA3-YA2" is determined that the tatami table meanders to the right, if the calculated value of "YA1-YA2 calculated value> YA3-YA2", the tatami table meanders to the left The swing of the correction roller 9b may be controlled based on the judgment.

  Furthermore, the raising and lowering pinch roller 9c may also be pivoted integrally with the correction roller 9b at the swing fulcrum 9d. It is preferable to fix the lifting and lowering cylinder 9f to the frame material side of the portion supporting the correction roller 9b so that the lifting and lowering roller 9c can move up and down, and turn along with the correction roller 9b with the folding table T held. is there.

  Furthermore, in order to detect the valley of the eye of Tatami list T, although the sensor described the embodiment in three, the spot of the sensor one by one each between the spots of the three left and right ends and the middle sensor. It is also possible to increase the number of sensors and accurately detect five sensors, or to increase the spots of the sensors further to the outside of the left and right sensors to form five sensors.

In the above, although three sensors were described in the embodiment, a displacement sensor that detects unevenness in the width direction of the tatami table with one sensor may be used, and unevenness in the width direction of the tatami table T with one sensor The technology of detecting the is equivalent to the technical scope of the present invention.

Reference Signs List 1 latitudinal table cutting machine 2 frame 3 latitudinal table holding means 4 upper front cutting blade 6 lower front cutting blade 7 tatami front surface feeding roller 8 tatami table surface measuring roller 9 conveyance correction mechanism 9a rotation drive source 9b correction roller 9c raising and lowering pinch roller 9d swing Support point 9e Rocking actuator 9f Lifting cylinder 10 Detection means 11 First sensor 11a Spot 12 Second sensor 12a Spot 13 Third sensor 13a Spot 20 Table 21 Cutting device 22 Folding surface table

Claims (3)

In a tatami table cutting machine that transports a tatami table and cuts in the width direction of the tatami table,
A sensor for detecting the height or depth of the valley of the eye of the tatami mat;
A sensor for detecting the height or the depth of the slope of the grass which is equidistant from or substantially equidistant from the valley of the eye in the width direction from the valley of the eye of the tatami mat surface,
Height or depth data of the valley of the eye of the tatami mat surface,
Height or depth data of the slope of the grass on the right in the width direction of the valley of the tatami mat surface,
Based on the height or depth data of the slope of the grass on the left side in the width direction of the valley of the tatami table, whether it is transported parallel to the valley of the tatami table or along the valley of the tatami table detected,
In each of the above sensors, measurement data of a predetermined number of times is acquired during a predetermined time during conveyance on the front surface, and the average value of the measurement data obtained by each sensor is calculated Detecting whether a tatami sheet is being transported parallel to the valley of the eye ; 2. A tatami mat cutting machine according to claim 1, wherein each of the sensors is disposed in the conveyance direction of the mat so that the spots of measurement do not interfere with each other. When it is determined that the tatami surface is meandering to the right or left side by the detection of the valley of the tatami surface, the conveyance correction mechanism of the tatami surface is provided on the opposite side to the meandering direction. Or the tatami surface cutting machine in any one of Claim 2 .