JP2006322139A - Straightening device for tatami mat, and tatami mat manufacturing apparatus equipped with it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a straightening device which enables data on the dimensions of a tatami mat, determined by an operator, to be simply captured by a control part without being erroneously input, and a tatami mat manufacturing apparatus which is equipped with the straightening device. <P>SOLUTION: The straightening device for the tatami mat is equipped with a measuring means for measuring a measuring signal proportional to an orthogonal distance from a reference straight line Ld set for the side, directed to the outside of a room, of the tatami mat, so as to transmit the measuring signal to the control part 15; the control part 15 captures orthogonal distance data for a bent part from the measuring signal proportional to the orthogonal distance from the reference straight line Ld to a half-mat position of a bent line drawn by the side, directed to the outside of the room, of the tatami mat; orthogonal reference data from the reference straight line Ld to a virtual straight line Li connecting the sewing-starting direction and sewing-finishing direction of the side, directed to the outside of a room, of the tatami mat are subtracted from the orthogonal distance data, so that data on irregularities of a half mat can be computed; and a track of a cut-off part 17 along the bent line, which is drawn by the side, directed to the outside of the room, of the tatami mat, is computed on the basis of the data on the irregularities. The tatami mat manufacturing apparatus 1 is equipped with the straightening device. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tatami habit removing device and a tatami manufacturing apparatus including the tatami habit removing device.

  The tatami shapes the heel and lower front with reference to the upper front of the straight line. Unlike the upper front, the lower front is not a straight line, but is a bent line that protrudes or is recessed between the hand and the hand, and in some cases, the booth. In general, this bent lower front shaping is called “garbage removal (or wrinkle removal)”, and various habit removal devices that automate habit removal have been proposed in recent years. These habit-removing devices are usually installed in a sewing machine of a tatami mat manufacturing apparatus that stabs a tatami mat into a tatami mat, and are often configured to move integrally with the sewing machine in the lower extending direction and the extending orthogonal direction.

  Patent Document 1 discloses a tatami manufacturing method in which tatami dimension data is input from a panel provided in a main control device using a numeric keypad, a sewing machine including a habit removing device is moved according to a trajectory calculated from the input dimension data, and habit is removed. We have proposed a device (tatami mating device). This patent document 1 uses the tatami mat dimension data determined by the worker in consideration of the fact that the tatami mat dimension data is determined by the worker (artisan) in the manufacturing process of the tatami mat.

  Patent Document 2 proposes a tatami manufacturing apparatus (tatami wrinkle removal apparatus) that automates the determination and input of tatami mat dimension data, and fully automates the process from the input of dimension data to pruning and flat stitching. . The dimensional data of each tatami is measured by measuring the dimensions of the room using a dimensional measuring device, determined by the CPU, and input to the sewing machine. Since the dimension measuring device is intended to measure a room itself in which a plurality of tatami mats are laid, there is an advantage that dimension data of a plurality of tatami mats can be acquired at once without a problem of erroneous input by an operator.

JP 58-029965 Japanese Patent Laid-Open No. 06-108622

  In the habit removing device found in Patent Document 1, since the operator inputs the tatami mat dimension data from the numeric keypad, the possibility that the operator erroneously inputs is not wiped out. In addition to the control unit of the habit removing device, a panel for inputting the tatami mat dimension data and a calculation unit for calculating the trajectory of the habit removing device from the input dimension data are required, and the configuration as the tatami mat manufacturing device is complicated. In addition, there is a problem that the cost of the tatami mat manufacturing apparatus is high.

  The habit removing device found in Patent Literature 2 has almost no risk of erroneous input of dimension data, which is a concern with the tatami mat manufacturing device found in Patent Literature 1. However, if the dimensional data different from the dimensional data of each tatami calculated by the CPU is to be used, the different dimensional data must be input to the control unit or the like using the numeric keypad or the like. The problem of incorrect input occurs. Moreover, since full automation as a tatami mat manufacturing apparatus is aimed at, the structure of a tatami mat manufacturing apparatus becomes still more complicated compared with patent document 1, and there exists a problem which becomes more expensive.

  Here, when looking at the site of tatami mat manufacturing, as described above, the tatami dimension data is determined by the operator, and the habit removing device moves according to the trajectory along the tatami dimension data determined by the operator. It is thought that it is only necessary to give me. That is, if only the movement of the habit removing device is automated, work efficiency can be improved as necessary and sufficiently. Therefore, in order to develop a habit removing device that can be easily taken into the control unit without erroneously inputting the tatami mat dimension data determined by the operator, it has been studied.

  What was developed as a result of the study is that the control unit calculates the trajectory of the excision part based on the size data of the tatami determined by the operator, and the drive unit moves the excision part according to the trajectory so that In the habit removing device for shaping, the measuring unit is provided with a measuring unit that measures a measurement signal proportional to the orthogonal distance from the reference straight line set with respect to the front and transmits the measurement signal to the control unit, and the control unit includes the reference unit Take the orthogonal distance data of this bending part from the measurement signal proportional to the orthogonal distance from the straight line to the bending part of the bending line drawn by this lower front, and the orthogonal reference from the reference straight line to the virtual straight line connecting the lower hand and the hand By subtracting data from the orthogonal distance data to calculate the unevenness data of the bent portion, and based on this unevenness data, a tatami pruning device that calculates the trajectory of the excision along the bending line drawn by the front and bottom That.

  Marks that represent the amount of protrusion or depression with respect to a virtual straight line connecting the lower hand and the hand, such as a tatami mat or a tatami floor, are formed on the bent part such as between booths or between booths according to the size data of the tatami determined by the operator There is a notch. The habit removing device of the present invention measures an orthogonal distance from a reference straight line to the mark, and further calculates a protrusion amount or a dent amount with respect to a virtual straight line represented by the mark as unevenness data, and the trajectory of the excision part based on the unevenness data. Is calculated. That is, since the operator does not directly input the dimension data to the control unit, erroneous input of the tatami dimension data to the control unit can be prevented. Here, the “measurement signal” measured by the measurement means is, for example, an analog signal that indicates the length of the orthogonal distance by the magnitude of the voltage or current by the potentiometer, or a digital signal that indicates the length of the orthogonal distance by the number of pulses by the encoder. It is converted into numerical data, that is, orthogonal distance data in the section. This measurement signal is transmitted from the measurement means to the control unit by wire or wirelessly.

  The measuring means includes a positioning ruler that matches a virtual straight line connecting the lower hand and the hand, a reference ruler that becomes a reference straight line extending in parallel with the positioning ruler, and a rod that advances and retreats in an orthogonal direction from the reference ruler. It is preferable that a measurement device that measures a measurement signal proportional to the orthogonal distance from the reference ruler according to the amount of advancement / retraction of the unit and that transmits the measurement signal to the control unit is preferable. The alignment ruler coincides with a virtual straight line connecting the lower front hand and the hand, and the reference ruler sets a reference straight line extending in parallel with the alignment ruler. As a result, the orthogonal reference data is uniquely set as the alignment ruler and the orthogonal distance of the reference ruler, and if the orthogonal distance data from the reference ruler to the bent portion is obtained, the orthogonal reference data is subtracted from the orthogonal distance data. Thus, the unevenness data of the bent portion can be calculated easily and accurately.

  Since the reference ruler only needs to extend in parallel to the alignment ruler that coincides with the straight line connecting the hand and the hand in front of the lower side, it can be provided outside the front side of the tatami mat, for example. However, since the trajectory of the excision part exists outside the lower front, it is not preferable to provide a reference ruler outside the lower front. Therefore, the alignment ruler is pivotally attached to the tatami presser that fixes the position of the tatami mat when removing the habit via a support arm so that it can be retracted upward or downward relative to the lower front, and the reference ruler is parallel to the alignment ruler. It is good to provide in the tatami mat.

  The distance measuring device includes a distance measuring device main body that is movably supported along a reference ruler, a rod portion that advances and retreats in an orthogonal direction from the distance measuring device main body, and orthogonal distance data from the reference ruler to a bent portion. It is preferable to use a sensor unit that measures the measurement signal proportional to the length of the unit and continues to transmit the measurement signal to the control unit. For example, when the measurement signal is an analog signal representing the magnitude of the voltage or current and the length of the orthogonal distance, the rod portion is a rack, and a potentiometer connected to a pinion meshing with the rod portion is configured as a sensor portion. When the measurement signal is a digital signal representing the length of the orthogonal distance by the number of pulses, an encoder that engraves a scale on the rod portion and counts the scale in contact or non-contact is configured as a sensor portion.

  Here, since the distance measuring instrument main body is interposed between the reference ruler and the rod part, strictly speaking, the orthogonal distance data from the reference ruler to the bent portion is obtained from a measurement signal proportional to the advance / retreat amount of the rod part. This is obtained by adding orthogonal correction data representing the length of the distance measuring instrument to the orthogonal measurement data. However, in the present invention, it is only necessary to know the unevenness data of the bent portion with respect to the virtual straight line connecting the lower hand and the hand, and orthogonal correction data is also included in the orthogonal reference data subtracted from the orthogonal distance data when calculating the unevenness data. Because it is included, the orthogonal reference data obtained by treating the orthogonal measurement data obtained from the measurement signal proportional to the amount of advancement / retraction of the rod part as the orthogonal distance data and subtracting the orthogonal correction data indicating the length of the distance measuring instrument. Is subtracted from the orthogonal distance data. From this, "orthogonal distance data taken from a measurement signal proportional to the orthogonal distance from the reference ruler" means that the orthogonal distance data obtained from the measurement signal proportional to the advance / retreat amount of the rod portion is treated as orthogonal distance data. .

  In the distance measuring device, since the sensor unit continues to transmit the measurement signal, it is necessary to specify the measurement signal representing the bent portion of the measurement signal and to capture the orthogonal distance data. Therefore, the distance measuring instrument includes an operation unit that transmits a trigger signal to the control unit, and the control unit receives the trigger signal from the operation unit, thereby specifying a measurement signal that the sensor unit of the distance measuring instrument continues to transmit. The orthogonal distance data from the specified measurement signal to the bent portion may be taken in. In addition, the distance measuring device includes an operation unit that transmits a correction signal to the control unit in a state where the rod unit is at a forward limit (a limit at which the rod unit extends to the maximum) or a backward limit (a limit at which the rod unit is contracted to the maximum). The control unit receives the correction signal from the operation unit, specifies the measurement signal that the sensor unit of the distance measuring instrument continues to transmit, and takes the maximum orthogonal distance data or the minimum orthogonal data from the specified measurement signal, The previous distance measuring device can be easily corrected. Here, the operation unit that transmits the trigger signal may also serve as the operation unit that transmits the correction signal.

  The operation unit may be provided in the control unit. In this case, the control unit includes an operation unit that transmits a trigger signal to the control unit, and receives the trigger signal from the operation unit, thereby specifying a measurement signal that the sensor unit of the distance measuring instrument continues to transmit, Captures orthogonal distance data from the specified measurement signal to the bent part. Similarly, the control unit includes an operation unit that transmits a correction signal to the control unit in a state where the rod unit of the distance measuring instrument is at the forward limit or the backward limit, and receives the correction signal from the operation unit, thereby measuring. The measurement signal that the sensor unit of the distance tool continues to transmit is specified, and the maximum orthogonal distance data or the minimum orthogonal data is acquired from the specified measurement signal to facilitate correction before measurement. As described above, the operation unit that transmits the trigger signal may also serve as the operation unit that transmits the correction signal.

  In addition, by utilizing the fact that the sensor unit of the distance measuring instrument continues to transmit measurement signals to the control unit, the control unit includes a display panel that displays unevenness data of the bent portion, and the sensor unit of the distance measuring instrument. The temporary orthogonal distance data is taken from the measurement signal that is continuously transmitted, the orthogonal reference data is sequentially subtracted from the temporary measurement data, the temporary unevenness data is sequentially calculated, and the increase / decrease of the temporary unevenness data is always displayed on the display panel. It is good to. Accordingly, the operator can measure the bent portion while confirming the increase / decrease in the temporary unevenness data always displayed on the display panel, and it is easy to avoid measurement errors.

  When there are a plurality of bent parts, the control unit may specify the measurement signal every time the trigger signal is received, take in the orthogonal distance data, and return to the measurement start state again. For example, when measuring three points in and between booths, if the first trigger signal is received, the orthogonal distance data in the booth closer to the hand is taken, the measurement start state is restored, and the next trigger signal is received. The orthogonal distance data in between is taken in and returns to the measurement start state again. When the first trigger signal is received, the orthogonal distance data in the booth near the hand is taken in and the measurement is completed. Here, it is preferable to use a display panel as information for shifting the bending portion to be measured every time the trigger signal is received. For example, the display panel is provided with the number of bent portions for measuring the display portion of the unevenness data, the increase / decrease of the temporary unevenness data is displayed only in the display portion corresponding to the bent portion being measured, and if the trigger signal is received, The temporary unevenness data is fixed as unevenness data of measurement completion, and an interface is configured to display the increase / decrease in temporary unevenness data of the display part corresponding to the bent part to be measured next.

  Although the habit removing apparatus of the present invention can be used alone, it can also be used in combination with a tatami mat manufacturing apparatus like the conventional habit removing apparatus. That is, in the tatami mat manufacturing apparatus to which the present invention is applied, a cutting portion is provided in the sewing machine, and the control unit and the driving unit of the sewing machine are combined to form any one of the above habit removing devices, and the bending obtained by the measuring unit The control unit calculates the trajectory of the sewing machine based on the unevenness data of the part, the excision unit shapes the front of the tatami by moving the sewing machine according to the trajectory, and the sewing machine performs the sewing work before this lower part. It becomes the composition which carries out. As described above, the habit removing device of the present invention can be easily applied to an existing tatami mat manufacturing apparatus because the measuring rule can be configured by providing the standard ruler on the tatami presser.

  The habit removing device of the present invention easily takes in the unevenness data of the bent portion representing the dimension data into the control unit without erroneously inputting the dimension data while using the dimension data of the tatami determined by the operator. The trajectory of the excision part can be calculated. This is an effect obtained by direct measurement of the bent portion by the measuring means in the habit removing device and transmission of the orthogonal distance data as the measurement result to the control unit. As a result, the worker only needs to provide a mark such as a notch according to the dimension data in front of the tatami mat to remove the habit, and the work process is the same as in the past, and the habit removal by the habit removing device is performed. enable. That is, the habit removal device of the present invention has an effect of automating only habit removal and saving labor without forcing the operator to change the work procedure.

  Hereinafter, as an embodiment of the present invention, with reference to the drawings, a tatami mat manufacturing apparatus 1 that can perform flat stitch stitching or reverse stitching with a tatami floor 22 covered on a tatami floor 21 in addition to a habit of removing only a tatami floor 21 (roughing). explain. FIG. 1 is a partial plan view showing measuring means in the tatami mat manufacturing apparatus 1 of this example, FIG. 2 is a plan view equivalent to FIG. 1 in a state where the alignment ruler 11 is retracted, and FIG. 3 is a reference ruler 12 and distance measurement in the measuring means 10 is a partial cross-sectional side view showing the tool 13. FIG. In each figure, for convenience of explanation, the sewing machine 14, the control unit 15 and the drive unit 16 are shown as a unit in addition to the parts related to the measuring means characterizing the present invention, and the display panel 151 and the cutting unit 17 are attached to the sewing machine 14. The other parts are omitted from the illustration. That is, the structure of the tatami mat manufacturing apparatus 1 according to the present invention is the same as that of a conventional similar apparatus.

  As shown in FIGS. 1 to 3, the measuring means that characterizes the present invention includes support arms 111 and 111 for a tatami presser 18 that fixes the tatami 2 on a table (not shown) at the time of pruning, flat stitching or reverse stitching. An alignment ruler 11 that is pivotally attached, a reference ruler 12 provided on the tatami retainer 18 in parallel with the alignment ruler 11, and a rod portion 131 that moves forward and backward in the orthogonal direction from the reference ruler 12 ( The distance measuring device 13 is configured to measure orthogonal distance data up to the bending portion) as a measurement signal proportional to the length of the rod portion 131 and continue to transmit this measurement signal to the control portion 15. The distance measuring device 13 can be separated from the reference ruler 12 and stored in a pocket provided in the sewing machine 14 when not in use.

  The alignment ruler 11 is a straight flat plate that is longer than the front of the tatami 2 and in this example, a pair of support arms 111 and 111 are projected from both ends, and each support arm 111 is pivotally attached to the tatami presser 18. It is lifted upward with respect to 18 so that it can be retracted. This alignment ruler 11 is matched with a virtual straight line Li connecting the notches 23 and 24 which are marks provided on the lower front hand and hand, but the alignment ruler 11 is pivotally attached to the tatami retainer 18 via the support arms 111 and 111. Basically cannot correct the posture. Therefore, as shown in FIG. 1, in practice, the posture of the tatami 2 placed on the table of the tatami mat manufacturing apparatus 1 is corrected, and a virtual straight line connecting the notch 23 at the hand and the notch 24 at the hand to the alignment ruler 11. Li is aligned with the edge of the alignment ruler 11, in this example the ruler inner edge 112. Thereafter, when the tatami 2 is fixed with the tatami presser 18, the reference ruler 12 provided on the tatami presser 18 is parallel to a virtual straight line Li connecting the hand and the hand.

  The standard ruler 12 is based on the length of the range where the notches 25, 26 and 27 (notches 26 and 27 in the booth are shown in Fig. 12 or Fig. 14), which are marks provided in the booth and booth. It is fixed to the tatami presser 18 with a linear angle material (see FIG. 3). The reference ruler 12 may be fixed to the tatami presser 18 by non-separable fixing by welding or by detachable fixing by a bolt or a screw. In such a reference ruler 12, the flange of the angle member is used as a reference side surface 121 that coincides with the reference straight line Ld, and the contact surface 133 of the distance measuring instrument main body 132 is brought into contact with the reference side surface 121. Here, if the reference side surface 121 and the contact surface 133 are smoothed, the distance measuring device 13 can align the reference ruler 12 in the longitudinal direction while moving the contact surface 133 in sliding contact with the reference side surface 121. For example, it is convenient when measuring a plurality of measurement objects described later. In addition, instead of attaching a separate reference ruler to the tatami presser, the tatami presser itself may be used as a reference ruler.

  The distance measuring device 13 includes a distance measuring device main body 132 supported movably along the reference ruler 12, a rod portion 131 that moves forward and backward from the distance measuring device main body 132 in the orthogonal direction of the reference ruler 12, and the reference ruler 12. The orthogonal distance data is measured as a measurement signal proportional to the length of the rod portion 131, and the sensor portion 134 continues to transmit this measurement signal to the control portion 15. The distance measuring device 13 of this example includes a sensor unit 134 in a distance measuring device main body 132, and is connected to the control unit 15 by a wired system by a communication cable 135 extending from the sensor unit 134. In addition to the reliable transmission of measurement signals, the wired system has the advantage of clarifying the correspondence between the sewing machine 14 and the distance measuring device 13 that are integrated with the control unit 15, and further preventing the distance measuring device 13 from being lost. is there. In order to increase the degree of freedom of the distance measuring device, a wireless transmission / reception unit may be added to the sensor unit, and the distance measuring device and the control unit may be connected in a wireless manner.

  The distance measuring device main body 132 is a box that is a gripping object that is held by an operator and handles the distance measuring device 13, and is provided with a contact surface 133 on one end surface in the longitudinal direction, and the rod portion 131 from the other end surface in the longitudinal direction. Is protruding freely. The contact surface 133 is formed of an angle flange fixed to one end surface in the longitudinal direction, and is brought into sliding contact with the reference side surface 121. The rod portion 131 is a rod body provided with a scale for generating a pulse by the sensor portion 134, to which a measuring flange 1311 to be engaged with the notch 25 in the middle is attached. A drawer knob 1312 is provided so that the portion 131 can be easily extended. The sensor unit 134 is in the distance measuring instrument main body 132 and supports the rod unit 131 so as to be able to advance and retreat, and continues to transmit a measurement signal representing the amount of advancement / retraction of the rod unit 131 by the number of pulses to the control unit 15. The advancing / retreating direction of the rod part 131 can be determined by, for example, using two types of pulses having a phase difference as pulses for counting the advancing / retreating amount of the rod part 131.

  In addition to this, the distance measuring instrument 13 of this example uses a communication cable 135 extending from the sensor unit 134 to transmit a trigger signal to the control unit 15 in order to capture measurement signals measured in the middle as orthogonal distance data. The unit 136 is built in the distance measuring device main body 132, and an operation button 1361 for instructing transmission of the trigger signal is provided on the upper surface of the distance measuring device main body 132. The operation unit 136 of this example also serves as an operation unit that transmits a correction signal to the control unit 15 in a state where the rod unit 131 is at the retreat limit. Accordingly, before the measurement is started, when the operation button 1361 is pressed in a state where the rod part 131 is set to the retreat limit, a trigger signal is transmitted as a correction signal to the control unit 15, and the sensor part 134 is in a state where the rod part 131 is at the retreat limit. Specifies a measurement signal that continues to be transmitted, and takes in the minimum orthogonal data from the specified measurement signal. The acquisition of the minimum orthogonal data has the meaning of eliminating the measurement error that occurs in the advance / retreat amount of the rod portion 131 by a plurality of measurements and keeping the measurement accuracy by the distance measuring device 13 constant. In addition, the operation unit 136 of this example has a reset button 1362 so that the states of the distance measuring instrument 13 and the control unit 15 can be initialized at any time.

  Next, in the tatami mat manufacturing apparatus 1 of this example, a procedure for measuring the distance between the front and the lower by the measuring means and calculating the trajectory of the sewing machine 14 will be described. 4 is a plan view of the distance measuring instrument 13 showing a state in which the correction signal is transmitted to the control unit 15 with the rod part 131 as the retreat limit, and FIG. 5 is a front view showing the display panel 151 in the state of FIG. 6 is a plan view of the distance measuring device 13 showing a state in which a measurement signal is transmitted to the control unit 15 while extending the rod portion 131, and FIG. 7 is a front view showing the display panel 151 in the state of FIG. 8 is a plan view of the distance measuring device 13 showing a state where provisional unevenness data obtained from the measurement signal is provisionally specified, FIG. 9 is a front view showing the display panel 151 in the state of FIG. 8, and FIG. FIG. 11 is a plan view of the distance measuring device 13 showing a state in which the unevenness data identified by transmitting to the control unit 15 is taken into the control unit 15, and FIG. 11 is a front view showing the display panel 151 in the state of FIG. It is.

  First, in order to remove a measurement error from a measurement signal transmitted from the sensor unit 134 to the control unit 15 before the measurement is started, as shown in FIG. Press to send the correction signal to the control unit 15. Upon receiving this correction signal, the control unit 15 calls the orthogonal reference data proportional to the count signal transmitted from the sensor unit 134 in a state where the rod unit 131 is extended by a certain amount from the distance measuring instrument 13 from the external storage device to the memory, for example. . Since the measuring means of this example interposes the distance measuring instrument main body 132 between the reference ruler 12 and the rod part 131, the orthogonal reference data is not the actual distance from the reference ruler 12 to the virtual straight line Li, Correction data obtained by adding the length of the distance measuring device main body 132 and the protruding amount of the rod portion 131 from the distance measuring device main body 132 at the retreat limit is subtracted from the actual distance. In addition to such internal processing, the control unit 15 switches the display on the display panel 151 attached to the sewing machine 14 to a “start screen (see FIG. 5)” to notify the operator that the measurement has started. In this example, on the start screen, the absolute amount of the unevenness data measured last time is displayed on the display frame 1511, and a protrusion or depression is indicated by lighting of the triangular arrow 1512, and the operator is asked again whether or not measurement is necessary. I am doing so. As described above, the switching of the display panel 151 visually notifies the operator of the elimination of the measurement error and the transition to the measurement start state, and also has a function of allowing the operator to determine whether measurement is necessary or not. This has the effect of reducing errors in handling.

  As shown in FIG. 6 from the above measurement start state, when the rod portion 131 starts to be extended, the sensor portion 134 measures the number of pulses proportional to the amount of advancement / retraction of the rod portion 131 and controls this number of pulses as a measurement signal. Begin sending to part 15. When the control unit 15 starts receiving the measurement signal, the display 15 switches the display on the display panel 151 (see FIG. 7), and temporary unevenness data calculated by subtracting the orthogonal reference data from the temporary orthogonal distance data obtained from the measurement signal. Is displayed in a display frame 1511 which is a display part. Intermittent protrusions or depressions are discriminated by lighting a triangular arrow 1512 that sandwiches a straight line provided on the left side of the display frame 1511. Temporary unevenness data is only proportional to the amount of advancement and retraction of the rod part 131, and the amount of protrusion or dent in the middle is not increasing or decreasing, but it is working that the space between tatami mats is the subject of measurement. The display frame 1511 is arranged at a position corresponding to the space between separately displayed tatami mats, and a circle indicating the space is shown in the tatami mat diagram.

  The operator moves the distance measuring device 13 along the reference ruler 12 and engages the measurement flange 1311 of the extended rod portion 131 with the notch 25 provided in the middle. At this time, if the contact surface 133 of the distance measuring instrument main body 132 is correctly in contact with the reference side surface 121 of the reference ruler 12, the measurement signal proportional to the advance / retreat amount of the rod portion 131 is from the reference ruler 12 to the middle. The size is proportional to the orthogonal distance data. Therefore, as shown in FIG. 8, when the operator presses the operation button 1361 of the distance measuring instrument main body 132, a trigger signal is transmitted to the control unit 15 to temporarily specify the temporary unevenness data displayed on the display frame 1511 ( As shown in FIG. 9, the left triangular arrow 1512 representing a dent in the figure is lit), and the increase / decrease of the temporary unevenness data due to the advance / retreat of the rod portion 131 is stopped. Then, the operator confirms the temporarily specified temporary unevenness data, and if there is no mistake, press the operation button 1361 of the distance measuring instrument main body 132 again as shown in FIG. Is specified as the unevenness data of and is taken into the control unit 15. Instead of the operation button 1361 of the distance measuring instrument main body 132, a “confirm” button 1513 displayed on the display panel 151 may be pressed.

  In this example, the operation button 1361 is pressed twice until the final unevenness data is captured from the measurement signal, so that the unevenness data calculated from the orthogonal distance data is confirmed by the operator, and the occurrence of measurement errors and the like is reduced. Or it is suppressed. If the temporary unevenness data in the temporarily specified is wrong, press the reset button 1362 on the distance measuring instrument main body 132 or press the “Redo” button 1514 displayed on the display panel 151 to start measurement again. It can be returned to the state.

  The unevenness data captured by the control unit 15 is only the protruding amount or the recessed amount with respect to the virtual straight line Li connecting the lower front hand and the hand, and this unevenness data is the protruding amount or the recessed amount at any position in the longitudinal direction of the lower front. Is not measured. However, since it is assumed that it is at the midpoint position of the virtual straight line Li connecting the lower front hand and hand during the measurement target, the unevenness data is the virtual straight line Li connecting the lower front hand and hand. It is processed as the amount of protrusion or dent in the middle point position. Therefore, the control unit 15 can easily calculate the trajectory of the sewing machine 14 according to the bending line drawn by the front and lower sides only with the captured unevenness data.

  Thus, the control unit 15 calculates the trajectory of the sewing machine 14 and at the same time switches the display panel 151 to the sewing machine operation start screen (see FIG. 11). Then, after the distance measuring instrument 13 is stored in a predetermined position, for example, a pocket provided in the sewing machine 14, when the operator presses the “start” button 1515 on the sewing machine operation screen, the driving unit 16 follows the trajectory. Then, while moving the sewing machine 14, the lower front is shaped by the cutting part 17, and the sewing machine 14 performs flat stitch sewing or reverse stitching as necessary. As described above, in consideration of the safety during the operation of the sewing machine, except for the operation of the “start” button 1515 of the sewing machine 14 on the display panel 151, the measuring means of this example provides all the operations related to the measurement work on the distance measuring instrument 13. It has a simple interface that can be executed only with the operation button 1361, and the measurement work in between is similar to the tatami mat measurement work, so it is possible to easily and reliably capture the uneven data in the middle. The

  In addition, in the tatami mat manufacturing apparatus 1 of this example, three points including a booth and a booth can be measured. 12 is a plan view of the distance measuring device 13 showing a state in which orthogonal distance data is measured in the booth near the hand, FIG. 13 is a front view showing the display panel 151 in the state of FIG. 12, and FIG. FIG. 15 is a plan view of the distance measuring instrument 13 showing a state in which the orthogonal distance data is being measured following the above measurement, and FIG. 15 is a front view showing the display panel 151 in the state of FIG. For convenience of explanation, the sewing machine 14 and the like are not shown in FIGS. In the tatami mat manufacturing apparatus 1 of this example, the number of objects to be measured can be switched at any time by pressing the “one point” button 1516 or the “three points” button 1517 displayed on the display panel 151 from the start of measurement to during measurement. (See, for example, FIG. 13 or FIG. 14).

  When measuring 3 points in the booth and during the booth, the measurement in the booth near the hand or in the middle is not completed in comparison with the measurement during the booth only, but the measurement in the last booth near the hand The difference is that the measurement is completed when the measurement is finished. Specifically, the measurement procedure is as follows. First, the operation button 1361 is pushed with the rod part 131 as the retreat limit, and the correction signal is transmitted to the control part 15 to enter the measurement start state, as described above. From this measurement start state, as shown in FIG. 12, when the measurement is started by extending the rod portion 131, the temporary unevenness data in the upper display frame 1518 corresponding to the inside of the booth in the display panel 151 increases or decreases. (See Figure 13). The tatami mats in the display panel 151 show a circle indicating the booth and the booth, and the operator recognizes that the measurement object is in the booth near the hand from the display frame 1518 in which the temporary unevenness data increases or decreases, Accordingly, the inside of the booth is measured, and the unevenness data in the booth can be taken into the control unit 15.

  After the unevenness data is taken into the control unit 15 in the booth near the hand in this way, as shown in FIG. 14, the operator advances and retracts the rod portion 131 and continuously measures the inside. The control unit 15 has shifted to the measurement start state during the subsequent period by taking in the unevenness data in the booth, and the measurement signal that can be continuously transmitted from the distance measuring device 13 is based on the measurement during the subsequent period. Then, the unevenness data displayed in the upper display frame 1518 in the display panel 151 is fixed, and new temporary unevenness data is displayed in the middle display frame 1511 to increase or decrease (see FIG. 15). Here, the unevenness data displayed in the upper display frame 1518 corresponding to the booth is fixed without increasing / decreasing, and only the temporary unevenness data displayed in the intermediate display frame 1511 corresponding to the booth increases / decreases, The operator can recognize that the measurement in the booth from the hand has been completed, and that the measurement is in progress.

  Similarly, after the concave / convex data is taken into the control unit 15 in the middle, the increase / decrease in the temporary concave / convex data is transferred to the lower display frame 1519 in the display panel 151 and finally measured in the booth near the hand. When the control unit 15 takes in the unevenness data in the close booth, the measurement is completed. Then, the control unit 15 calculates the trajectory of the sewing machine 14 from the obtained three unevenness data, and at the same time, switches the display panel 151 to the sewing machine operation start screen (see FIG. 11). Thereafter, the distance measuring instrument 13 is retracted, and the machine 14 is moved along the trajectory while the front and lower sides are shaped by the excision part 17, and the sewing machine 14 performs flat stitch sewing or reverse stitching if necessary. . Thus, even if there are a plurality of measurement objects, measurement using the distance measuring instrument 13 in the present invention is easy, and it is possible to suppress or prevent mistakes by an operator, and to reliably capture irregularity data in between. Is realized.

It is a fragmentary top view showing the measurement means in the tatami mat manufacturing apparatus of this example. FIG. 2 is a plan view corresponding to FIG. 1 in a state where the alignment ruler is retracted. It is a fragmentary sectional side view showing the standard ruler and distance measuring instrument in a measurement means. It is a top view of the distance measuring device showing the state which has transmitted the correction signal to a control part by making a rod part into a retreat limit. It is a front view showing the display panel in the state of FIG. It is a top view of the distance measuring device showing the state which is transmitting the measurement signal to a control part, extending | stretching a rod part. It is a front view showing the display panel in the state of FIG. It is a top view of the distance measuring device showing the state which specifies temporarily the temporary unevenness | corrugation data obtained from the measurement signal. It is a front view showing the display panel in the state of FIG. It is a top view of the distance measuring device showing the state where the uneven | corrugated data specified by transmitting a trigger signal to a control part are taken in into the control part. FIG. 11 is a front view showing a display panel in the state of FIG. It is a top view of the distance measuring device showing the state which is measuring the orthogonal distance data in the booth near hand. FIG. 13 is a front view showing the display panel in the state of FIG. It is a top view of the distance measuring device showing the state which is measuring the orthogonal distance data during a boot following the measurement during a booth. FIG. 15 is a front view showing the display panel in the state of FIG.

Explanation of symbols

1 Tatami production equipment
11 Alignment ruler
12 Standard ruler
13 Rangefinder
131 Rod part
132 Distance measuring instrument
133 Contact surface
134 Sensor unit
135 Communication cable
136 Operation section
1361 Operation buttons
14 Sewing machine
15 Control unit
151 Display panel
1511 Middle display frame
1518 Upper display frame
1519 Lower display frame
16 Drive unit
17 Excision
18 tatami mats 2 tatami mats
Li virtual straight line
Ld Reference straight line

Claims (10)

In the habit removing device that shapes the front of the tatami by the control unit calculating the trajectory of the excision part based on the dimensional data of the tatami determined by the operator and the drive unit moving the excision part according to the trajectory. It comprises a measuring means for measuring a measurement signal proportional to the orthogonal distance from a reference straight line set with respect to the front and transmitting the measurement signal to the control unit, and the control unit is a bend drawn by the lower front from the reference straight line. Captures the orthogonal distance data of the bent part from the measurement signal proportional to the orthogonal distance to the bent part of the line, and subtracts the orthogonal reference data from the reference straight line to the virtual straight line connecting the lower hand and the hand from the orthogonal distance data. Then, the unevenness data of the bent part is calculated, and the trajectory of the excision part along the bent line drawn by the lower front is calculated based on the unevenness data. The measuring means includes a positioning ruler that matches a virtual straight line connecting the lower hand and the hand, a reference ruler that is a reference straight line extending in parallel with the positioning ruler, and a rod that advances and retreats in the orthogonal direction from the reference ruler. The tatami pruning apparatus according to claim 1, further comprising: a distance measuring device that measures a measurement signal proportional to an orthogonal distance from the reference ruler according to an amount of advancement and retreat of the unit, and transmits the measurement signal to the control unit. The alignment ruler is pivotally attached to the tatami presser that fixes the tatami position when removing the habit via a support arm, and can be retracted upward or downward relative to the lower front, and the reference ruler is parallel to the alignment ruler. The tatami pruning apparatus according to claim 2, wherein the tatami pruning apparatus is provided on a tatami press. The distance measuring device includes a distance measuring device main body that is movably supported along the reference ruler, a rod portion that advances and retreats from the distance measuring device main body in a direction orthogonal to the reference ruler, and a reference ruler that uses the amount of advancement and retraction of the rod portion. The tatami peculiarity device according to claim 2, comprising a sensor unit that measures a measurement signal proportional to an orthogonal distance from the sensor unit and continues to transmit the measurement signal to the control unit. The distance measuring device includes an operation unit that transmits a trigger signal to the control unit, and the control unit receives the trigger signal from the operation unit, thereby specifying a measurement signal that the sensor unit of the distance measuring device continues to transmit. 5. The tatami pruning apparatus according to claim 4, wherein orthogonal distance data from the specified measurement signal to the bent portion is taken. The distance measuring device includes an operation unit that transmits a correction signal to the control unit in a state where the rod unit is at the forward limit or the backward limit, and the control unit receives the correction signal from the operation unit, thereby 5. The tatami pruning apparatus according to claim 4, wherein a measurement signal that is continuously transmitted by the sensor unit is specified, and maximum orthogonal distance data or minimum orthogonal data is acquired from the specified measurement signal. The control unit includes an operation unit that transmits a trigger signal to the control unit. By receiving the trigger signal from the operation unit, the control unit identifies a measurement signal that the sensor unit of the distance measuring instrument continues to transmit, and The tatami pruning apparatus according to claim 4, wherein orthogonal distance data from the measured signal to the bent portion is taken. The control unit includes an operation unit that transmits a correction signal to the control unit in a state where the rod unit of the distance measuring instrument is at the forward limit or the reverse limit, and receives the correction signal from the operation unit, thereby measuring the distance. 5. The tatami pruning apparatus according to claim 4, wherein a measurement signal that the sensor unit of the tool continues to transmit is specified, and maximum orthogonal distance data or minimum orthogonal data is taken from the specified measurement signal. The control unit is equipped with a display panel that displays the unevenness data of the bent part, fetches the temporary orthogonal distance data from the measurement signal continuously transmitted by the sensor unit of the distance measuring instrument, and sequentially subtracts the orthogonal reference data from the temporary measurement data Then, the temporary unevenness data is sequentially calculated, and the increase / decrease in the temporary unevenness data is always displayed on the display panel. A cutting part is provided in the sewing machine, and the tatami pruning apparatus according to any one of claims 1 to 9 is configured by using both a control part and a driving part of the sewing machine, and based on the unevenness data of the bent part obtained by the measuring means The control unit calculates the trajectory of the sewing machine, the drive unit moves the sewing machine according to the trajectory, and the excision unit shapes the front of the tatami mat, and the sewing machine performs the sewing work of the lower front. Manufacturing equipment.

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