JP2007111122A - Belt-type roll ironer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the finishing quality of a business-use belt-type roll ironer which irons washing after washing/spin-drying by providing a technical means capable of separating the washing from cylinders by using a force acting on the washing itself without providing a tape. <P>SOLUTION: A plurality of cylinders and transfer belts are arranged to ensure that the washing is fed onto the peripheries of the cylinders from upper portions and delivered from lower portions. Gravity in the direction of separating the washing from the peripheries of the cylinders acts on the washing in the lower portions of the cylinders and the washing is smoothly separated from the peripheries of the cylinders by the gravity. Furthermore, since the small diameters of the cylinders increase a centrifugal force acting on the washing, and add the centrifugal force to the gravity in the lower portions of the cylinders, the washing can be more definitely prevented from sticking to the peripheries of the cylinders in the outlets of the cylinders. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a belt-type roll ironer (hereinafter, also simply referred to as “roll ironer”) that irons laundry after being washed and dehydrated, and in particular, sheets used in accommodation facilities such as hotels. The present invention relates to a roll ironer for business use provided in a laundry washing line called laundry, mainly linens.

  There are two types of ironers that are installed in the laundry line for business use to stretch the linen that has already been washed, one that is called the chest type and the other that is called the calendar type in Japan. There is. For the chest type, the laundry is fed between a chest provided with a groove having a semicircular cross section and a rotary press roll inserted into the groove, and the laundry is moved into the chest by the rotation of the press roll. It is pressed and transferred to the peripheral surface, and it is stretched (ironed), and the surface of the stretched laundry is glossy, but the equipment is large and rubs and feeds, so the power consumption of the transport motor However, there are drawbacks in that it is about 10 times larger than the roll type, consumes a lot of steam, has low productivity, and hurts laundry.

  On the other hand, a calender type belt type roll ironer has a plurality of (usually 4 to 5) rotary heating cylinders heated by putting steam inside, and is wound around these cylinders while pressing linen against the cylinder circumferential surface. Consisting of a conveyor belt that rotates synchronously with the cylinder, it is used to stretch and finish washed linen. The gloss of the laundry surface is inferior to that of the chest type, but the equipment is relatively inexpensive and energy consumption. There is also a feature that there are few.

  FIG. 7 schematically shows an example of a conventional roll ironer having four heating cylinders, in which 1 (1a to 1d) is a heating cylinder, 7 is a laundry passage, and 4 (4a to 4d). ) Is a conveyor belt provided along the passage. The conveyor belt 4 is for sending the laundry against the heating cylinder 1 and is composed of a plurality of belts arranged across the entire width of the heating cylinder 1 with a slight gap therebetween. The heating cylinder 1 is heated by blowing steam into the inside, and the laundry is stretched and dried while the laundry is sequentially wound around these cylinders by the conveyor belt 4 and transferred.

  Each of the circulating belts 4 is attached to the peripheral surface of the cylinder by an inlet roller 5 at a linen feeding position to the corresponding cylinder 1, and is guided by an outlet roller 6 at a delivery position to leave the peripheral surface of the cylinder. The plurality of guide rollers 8 installed away from the cylinder peripheral surface return to the entrance roller 5. In the conventional structure, the linen is fed from the upper part of the first cylinder 1a and sent from the lower side, the second cylinder 1b is fed from the upper part and sent from the side, and the third and fourth cylinders are sent from the upper part. It is sent from the side and sent from the top. Further, the lower surface of the linen is pressed against the first cylinder 1a, and the upper surface is pressed against the second, third and fourth cylinders.

  An input belt 2 and a presser belt 3 are provided at an input port of linen to the machine. The linen thrown into the machine is fed into the inlet of the first cylinder 1 a while being sandwiched between the throwing belt 2 and the presser belt 3.

  At the inlets of the first cylinder 1a and the second cylinder 1b, press rolls 9 and 27 are attached that rotate with the rotation of these cylinders. The peripheral surfaces of the press rolls 9 and 27 are provided with elasticity by winding a cushion spring. An air cylinder is connected to both ends of the support shafts of the press rolls 9 and 27, and the pressing force of the press rolls 9 and 27 on the cylinder 1 is adjusted by the air pressure supplied to the air cylinder.

  The linen to be ironed contains the most moisture when it enters the ironer, that is, when it is pressed against the first cylinder 1a by the press roll 9. The role of the press roll is that the water-containing linen is pressed by the press roll 9 at the entrance of the heating cylinder 1 so that the entire shape is almost formed, and “smoothness” (smoothness of the fiber surface) is formed on the linen surface. Is). In general, linen put into an ironer is ironed with 30 to 40% by weight of water, and the iron is stretched best and the surface is "smoothly" finished.

  When the linen is lifted from the conveyor belt 4, the ironed linen is wrinkled or the linen is clogged in the apparatus. The linen may be lifted from the conveying belt 4 when the linen is separated from the cylinder 1, and the linen tends to stick to the cylinder peripheral surface particularly in the first cylinder 1 a and the second cylinder 1 b having a high moisture content. Is strong. Moreover, in the location where the press rolls 9 and 27 are provided, there is a risk that the linen sticks to the press rolls 9 and 27 and winds.

  As a means for preventing the linen from lifting from the conveyor belt 4, a conventionally used technique is to use a tape (also called a ribbon) 10, 12 (12 a to 12 d) for preventing the linen from lifting. The tapes 10 and 12 are peeled off so that the linen does not stick to the cylinder 1 or the press rolls 9 and 27, and are also provided at the portion 11 where the linen passage turns back nearly 180 degrees. The tape 10 enters between the cylinder 1 and the press roll 9 and the linen. The tapes 10 and 12 are thinner and thinner than the belts constituting the conveyor belt and have a wide arrangement interval and a small number. A conventional general belt type roll ironer uses a plurality of tapes having a width of about 15 mm.

  In FIG. 7, the paths of the tapes 10 and 12 are indicated by dotted lines. 10 is an anti-sticking tape to the first press roll 9, 12a is an anti-sticking tape to the first cylinder and the second press roll 27, and 12b, 12c and 12d are to the second, third and fourth cylinders, respectively. It is a sticking prevention tape. The tapes 12c and 12d also prevent the linen from floating up at the portion 11 where the linen passage is folded back 180 degrees.

  As another means for preventing the linen from sticking to the cylinder 1, a technique has been proposed in which a scraper or an air injection nozzle is provided at a position where the linen is separated from the cylinder peripheral surface, and the linen is forcibly separated from the cylinder peripheral surface. (See Patent Document 1). However, with such a structure, the scraper and the jet air do not function well, and there is a risk that linen sticks to the cylinder peripheral surface.

  Since the linen is continuously fed into the ironer, if the linen is stuck without leaving the cylinder for some reason, the subsequent linen is caught one after another, i.e., clogging occurs. When the sheet is stuck, it is necessary to detect it as soon as possible, stop the operation once, take out the clogged linen, and speed up the recovery.

In order to improve the quality of the ironed laundry, it is important to reduce the belt traces and tape traces remaining on the laundry as much as possible by adjusting the operating conditions. In this regard, the applicant of the present application disclosed, in Patent Document 2, in a roll ironer provided with multi-stage rotary heating cylinders, temperature adjusting means for adjusting the temperature of the first cylinder, and temperatures of a plurality of subsequent cylinders And changing the temperature of the first cylinder lower than the temperature of the subsequent cylinder, thereby proposing a technique for weakening the traces of the conveyor belt and tape remaining on the laundry.
JP 2005-205065 A JP 2004-180829 A

  As mentioned above, the most reliable way to prevent the ironing linen from sticking to the cylinder is to use tape, but the tape is between the laundry and the cylinder circumference, i.e. ironing the laundry. Therefore, there is a problem that tape marks remain on the washed linen and the finishing quality is lowered. In addition, the tape is made of fiber and may break when used for a certain period of time. Therefore, the tape needs to be replaced periodically, which is troublesome for the operator.

  On the other hand, recently, due to the upgrading and differentiation of hotels, there are many examples in which high quality is required for washed linens. In order to improve the finishing quality, it is preferable to use a chest type ironer. However, as described above, there is a problem that the machine cost and the energy consumption are large. Therefore, it is required to improve the finishing quality of the roll ironer. To that end, it is conceivable to increase the pressing force of the press rolls 9 and 27. However, when a sticking prevention tape is inserted between the cylinder and the linen, increasing the pressing force of the press rolls 9 and 27 improves the smoothness of the surface, but gives a strong tape mark. A problem occurs.

  The scraper and the structure that peels the linen from the cylinder with an air jet can avoid tape marks, but the mechanical structure becomes complicated and the external force applied from the edge of the scraper and the air flow causes the linen to be removed. Therefore, there is a problem that the external force causes wrinkles and the reliability of the peeling action is not sufficient.

  This invention was made as part of research to improve the finish quality of a roll ironer to a quality close to that of a chest type, and uses the force acting on the laundry itself that passes through the roll ironer, It is an object to improve the finishing quality of the roll ironer by providing technical means that can more reliably peel the laundry from the cylinder of the roll ironer without providing a roll. Furthermore, when the laundry does not peel from the cylinder peripheral surface, it is an object to quickly detect the laundry and prevent the laundry from being clogged into the machine.

  The present invention includes a plurality of rotary heating cylinders 1 (1a to 1f) and a conveyor belt 4 (4a) that is wound around these cylinders and synchronously rotates while pressing the laundry against the cylinder surface to convey the laundry. 4f), the plurality of cylinders and the conveyor belt are arranged so that the laundry is fed into the peripheral surface of each cylinder from the upper part and fed out from the lower part. The above-described problems are solved by providing a belt-type roll ironer characterized by the above.

  Specifically, the conveyor belt 4 is attached to the cylinder circumferential surface at the upper part of each cylinder 1 provided in the roll ironer, and after about a half turn, the conveyor belt 4 is moved to the cylinder circumferential surface at the lower part of the cylinder 1. A plurality of cylinders 1 (1a to 1f) and a conveyor belt 4 (4a to 4f) are arranged so as to be separated from each other. A preferred cylinder arrangement is a pair of two adjacent cylinders, with the upstream side of the laundry passage being located at the back when viewed from the laundry input side, and the downstream side having the upper end at the upstream side. It arrange | positions near this front so that it may become substantially the same height as a lower end. Such a pair of two cylinders is arranged in two or three pairs in the front-rear direction when viewed from the laundry inlet. Then, by transferring the laundry from the lower cylinder of the front pair to the upper cylinder of the rear pair, the laundry is fed from the upper part to all the cylinders provided in the roll ironer, and from the lower part. It can be a structure for sending out.

  According to this cylinder arrangement, both sides of the laundry are alternately pressed against the peripheral surfaces of the four or six cylinders provided in the roll ironer, and ironing is performed.

  In the roll ironer having the above structure, the laundry pressed against each cylinder 1 leaves the peripheral surface of the cylinder at the lower part of the cylinder. In the lower part of the cylinder, gravity in a direction away from the cylinder peripheral surface acts on the laundry, and this gravity promotes smooth peeling of the laundry from the cylinder peripheral surface.

  Furthermore, if the diameter of the cylinder 1 is 600 to 700 mm, preferably a small diameter cylinder of about 600 to 650 mm, and the laundry conveyance speed is set to the same speed as a conventional roll ironer having a cylinder diameter of about 1000 mm, the laundry Since the centrifugal force acting on the cylinder increases and this centrifugal force is added to the gravity at the lower part of each cylinder, it is possible to more reliably prevent the laundry from sticking to the cylinder peripheral surface at the cylinder outlet. In order to obtain the effect of preventing sticking by centrifugal force and the effect of reducing steam consumption, which will be described later, the smaller the cylinder diameter, the better. To finish the laundry with a roll ironer, It is necessary to be pressed against the cylinder surface by length. If the cylinder diameter is further reduced, the number of cylinders must be increased in order to secure this pressing length, and accordingly the number of conveyor belts increases, the structure of the apparatus becomes complicated, and the installation space for the machine also increases. . In order to exert an anti-sticking action and an energy saving effect without complicating the apparatus structure, 600 mm is the limit that can be reduced to a small diameter.

  The phenomenon that the laundry sticks to the cylinder peripheral surface occurs in the first cylinder 1a and the second cylinder 1b in which the laundry contains a lot of moisture. In the cylinders after the third cylinder 1c, the sticking phenomenon occurs. It hardly occurs. And since the gravity and the centrifugal force act more on the laundry containing a lot of moisture, the laundry is peeled off from the cylinder peripheral surface by the first cylinder 1a and the second cylinder 1b, which are likely to cause the sticking phenomenon. The force which tries to work greatly acts and can prevent the phenomenon of the laundry sticking to the cylinder peripheral surface reasonably.

  With the above structure, it is possible to almost completely prevent the laundry from sticking to the cylinder's peripheral surface, but it is more complete considering the case where the laundry is glued or the cylinder is dirty. If desired, a rotating roller 6z having irregularities on the peripheral surface for applying a small vertical vibration to the belt 4 at the exit position where the conveying belt 4 is separated from the cylinder 1 is attached as described in claim 4. . When the uneven rotating roller 6z is rotated by the rotating operation of the conveyor belt 4, the laundry on the conveyor belt 4 is vibrated little by little in the vertical direction, and the laundry is more reliably separated from the cylinder peripheral surface. Can be realized.

  It is in the first cylinder or the second cylinder that the phenomenon of the laundry sticking to the cylinder peripheral surface occurs. Therefore, the rotating roller 6z having the above-described unevenness is provided at the outlet of the first cylinder 1a or the second cylinder 2a, or instead of such a rotating roller, the machine by detecting the sticking of the laundry to the cylinder is detected. An emergency stop device can be provided.

  The roll ironer according to the invention of claim 5 of the present application is a belt-type roll ironer having the above-described configuration, and the laundry provided on the upstream side of the first rotary heating cylinder 1a in the laundry passage. A first passage sensor 30a for detecting the passage of the leading edge of the laundry, a second passage sensor 30b for detecting the leading edge of the laundry to be transported provided downstream of the first cylinder, and the loading of the laundry Or a speed sensor 31 for detecting the conveyance speed, and the speed sensor detects the length of the laundry path between the first passage sensor and the second passage sensor after receiving the detection signal of the first passage sensor. Control means 32 is provided for stopping the machine when the detection signal of the second passage sensor is not received when a predetermined threshold value is added to the time divided by the speed. In .

  Since the length of the laundry passage between the first passage sensor 30a and the second passage sensor 30b is known, the laundry is detected by the first passage sensor 30b if the distance is divided by the detected conveyance speed. Then, the time until the laundry reaches the position of the second passage sensor 30b can be calculated. If the laundry is not detected by the second passage sensor even after this time has elapsed, it is considered that the laundry has adhered to the cylinder peripheral surface, so a warning is output to the monitor of the control device and the machine is automatically stopped. Accordingly, it is possible to prevent subsequent laundry from being wound around the cylinder one after another and causing the laundry to be jammed.

  According to the present invention, the laundry can be reliably peeled off from the cylinder peripheral surface at the outlet of each cylinder without using a tape between the laundry and the cylinder 1 in the wrapping portion of the conveyor belt 4, and thus the laundry. The stripping tape provided between the article and the cylinder 1 can be eliminated, and the trace of the tape can be completely prevented from remaining on the finished surface of the laundry. Further, since the tape mark does not remain, the pressing force of the press rolls 9 and 27 of the first cylinder 1a and the second cylinder 1b, which greatly affects the quality of the finished surface, is increased, and the peripheral surfaces of the first and second cylinders are increased. By polishing the surface to improve the surface accuracy, it is possible to obtain a finishing quality close to that of a chest type ironer. For varieties with the front and back of the laundry, it is better to put the laundry in the direction where the front surface hits the first heating cylinder surface.

  Further, according to the invention of claim 5, when the laundry is stuck to the cylinder 1a, it is immediately detected and the machine stops. Therefore, even if the laundry does not peel from the cylinder, Can be surely avoided.

  Further, by reducing the diameter of the cylinder 1, the centrifugal force acting on the laundry is increased, so that the laundry is prevented from sticking to the cylinder surface, and the consumption of steam for heating the cylinder is reduced. The effect is obtained, and the machine can be made compact without deteriorating the drying performance. According to the test conducted by the inventors of the present application, as an effect when the cylinder diameter is set to 650 mm, the time from the introduction of steam at the start of work until the temperature reaches an operable temperature is shortened by 22% compared with the conventional machine, Consumption was reduced by 33%. In addition, the drying performance by alternately pressing both surfaces of the laundry against the heating cylinder was improved by 15% compared to the conventional machine.

  Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a roll ironer of the present invention having six heating cylinders 1 (1a to 1f), 21 is a housing of the apparatus, 22 is a laundry (linen) inlet, and 23 is a drain. It is an exit. The first cylinder 1a and the second cylinder 1b on the upstream side of the linen passage are positioned so that the first cylinder 1a is located on the back side as viewed from the linen loading port 22 side, and the second cylinder 1b is located on the near side lower side. The lower part of the 1st cylinder 1a and the upper part of the 2nd cylinder 1b are substantially the same height.

  The third cylinder 1c and the fourth cylinder 1d have a positional relationship similar to the positional relationship between the first cylinder and the second cylinder behind the pair of the first and second cylinders, that is, the third cylinder from the linen input port 22 side. 4th cylinder 1d is arrange | positioned at the back upper side seeing, and it has arrange | positioned so that the lower part of 3rd cylinder 1c and the upper part of 4th cylinder 1d may become substantially the same height. The arrangement of the fifth cylinder 1e and the sixth cylinder 1f provided behind the pair of the third cylinder and the fourth cylinder has the same positional relationship.

  All cylinders 1 have the same diameter, and are 650 mm diameter cylinders that are smaller than conventional 1000 mm diameter cylinders. Thereby, the installation floor area of the apparatus of FIG. 1 provided with 6 cylinders is substantially equal to that of the conventional apparatus in which four 1000 mm diameter cylinders are arranged in the manner shown in FIG. 7, and the machine height is low.

  Conveying belts 4a, 4c, and 4e of upper cylinders 1a, 1c, and 1e are respectively provided with inlet rollers 5a, 5c, and 5e that are located at the top of each cylinder and outlet rollers 6a, 6c, and 6e that are located at the bottom left of each cylinder. Between the outlet rollers 6a, 6c, and 6e and returned to the inlet rollers 5a, 5c, and 5e by being guided by a plurality of rollers (not shown) including the tension adjusting roller 24. Yes. Three press rolls 9 are arranged at the entrance of the first cylinder 1a, and the entrance roller 5a of the first transport belt is provided at a position close to the right side in the drawing. On the other hand, the inlet rollers 5c and 5e of the third cylinder and the fifth cylinder are placed on the upper left side of the cylinders 1c and 1e so as to receive the linen sent obliquely upward from the lower parts of the preceding cylinders 1b and 1d. Has been placed.

  Conveying belts 4b, 4d, and 4f of the lower cylinders 1b, 1d, and 1f are respectively disposed between inlet rollers 5b, 5d, and 5f positioned at the upper part of each cylinder and outlet rollers 6b, 6d, and 6f positioned at the lower right side. It is attached to the cylinder, and includes a tension adjusting roller 24 after it has risen obliquely from the outlet rollers 6b, 6d, 6f to a position facing the inlet rollers 5c, 5e of the next stage cylinder or to the linen outlet 23. It is returned to the entrance rollers 5b, 5d and 5f by a plurality of rollers. The first conveyor belt 4a and the third conveyor belt 4c are diagonally above the second conveyor belt 4b and the fourth conveyor belt 4d between the driving roller 25 provided at the upper right part thereof and the pressing roller 26 at the lower left side thereof. It is pressed against the extending portion, and the linen is conveyed between the drive roller 25 and the pressing roller 26 while being sandwiched between two conveying belts.

  The press roll 9 provided in the first cylinder is provided with a tape 10 for preventing the linen from sticking. A second press roll 27 and a tape guide 28 are provided at the entrance of the second cylinder 1b, and the entrance roller 5b of the second transport belt is provided at a position retracted to the left in the drawing. A second tape 29 is wound between the second press roll 27 and the tape guide 28. No sticking prevention tape is provided between each cylinder 1 and the corresponding conveyor belt 4.

  With the arrangement of the cylinder 1 and the conveyor belt 4 described above, the linen passing through the apparatus is inserted between the cylinder 1 and the conveyor belt 4 from the upper part of each cylinder 1 and separated from the cylinder circumferential surface at the lower part of each cylinder. To the top of the next cylinder.

  The tape 10 provided on the press roll 9 of the first cylinder is provided by alternately winding a plurality of tapes 10 on two of the three press rolls, as schematically shown in FIG. Yes. Thus, by removing one of the front ends or the rear ends of the plurality of press rolls and winding the respective tapes, the traces of these tapes 10 are kept as little as possible on the linen.

  Further, as shown schematically in FIG. 3, the second tape 29 wound around the second press roll 27 provided in the second cylinder 1b is provided on the same line as the tape 10 of the first cylinder and wider than this. Thus, the tape mark attached by the press roll 9 is erased by the second tape 29.

  As a result, when the pressing force of the press roll 9 is increased to obtain a smooth smooth surface, the trace of the tape 10 is reduced from remaining on the linen, and a better finish quality is obtained.

  As the exit rollers 6a and 6b of the first cylinder 1a and the second cylinder 1b, a concavo-convex roller 6z having a concavo-convex surface as shown in FIG. 4 is used. When the concavo-convex roller 6z rotates in accordance with the rotation of the conveyor belt 4, the conveyor belt 4a pushes up the conveyor belt at the convex portion and releases the push-up at the concave portion. 4b is caused to vibrate in the vertical direction, which is transmitted to the linen on the conveyor belt to vibrate the linen up and down, thereby promoting the peeling of the linen from the cylinder peripheral surface.

  As shown in the block diagram of FIG. 5, a first passage sensor 30a and a second passage sensor 30b for detecting the leading edge of the linen are provided at the inlet portions of the first cylinder 1a and the third cylinder 1c. The feeding belt 2 is provided with a speed sensor 31 for detecting the feeding speed. The detection signals of these sensors are sent to the control device 32, and the control device 32 detects the length of the linen passage from the first passage sensor 30a to the second passage sensor 30b registered in advance by the speed sensor 31. The time for the tip of the linen detected by the first passage sensor 30a to reach the position of the second passage sensor 30b is calculated by dividing by the determined speed. After the linen tip is detected by the first passage sensor 30a, the controller monitor is warned when the second passage sensor 30b does not detect the linen tip even after the calculated time has elapsed. Is displayed and the machine is stopped. As a result, even if linen sticks to the cylinder, the machine is operated as it is to prevent linen clogging and the like from occurring.

  The trace of the tape 10 wound around the press roll 9 remaining on the finished linen and the trace of the conveyor belt 4 can be reduced by controlling the cylinder temperature. FIG. 6 is a diagram showing only the main part of the temperature control device of the heating cylinder, omitting the linen passage and the like in the device. Each of the branch pipes 34 branched from the heating steam supply pipe 33 and connected to each cylinder 1 is provided with a steam flow rate adjustment valve 35 and a pressure sensor 36 on the downstream side (cylinder side). The control device 37 controls the opening degree of each steam flow rate adjustment valve 35 so that the detected pressure of each pressure sensor 36 becomes a pressure corresponding to the temperature set in each cylinder 1. In the example of FIG. 6, a temperature sensor 38 that detects the drain temperature of the first cylinder 1a and the fourth cylinder 1d is provided, and these detected temperatures are sent to the control device 37 and calculated from the detected pressure of the pressure sensor. The difference between the cylinder temperature and the temperature detected by the temperature sensor is monitored, and when this difference becomes large, appropriate corrections and warnings are performed.

  During operation of the device, the temperature adjustment dial 39 of the control device 37 is adjusted so that the trace of the tape 10 remaining on the linen discharged from the device is minimized, so that the first cylinder (second cylinder if necessary) is adjusted. Also) control the surface temperature. Normally, when the steam pressure is about 0.8 Mpa, the cylinder surface temperature is around 160 ° C., but when the tape mark is weakened, the set temperature is switched to make the steam pressure about 0.2 Mpa. At this time, the cylinder surface temperature is about 120 ° C. The temperature in the vicinity is the most suitable temperature for smoothing the linen and further reducing tape marks. When finishing linen that does not interfere with tape marks, operate with normal steam pressure with a changeover switch.

  As described above, according to the present invention, the linen is lifted from the conveyor belt at the exit portion from each cylinder or stuck to the cylinder circumferential surface without interposing a tape between the cylinder and the linen pressed against the cylinder. It provides a means to more reliably prevent clogging and clogging. According to the present invention, since it is not necessary to interpose a tape between the cylinder peripheral surface and the linen, it is possible to prevent the trace of the tape from remaining on the linen and to obtain a high-quality finished surface. Further, by increasing the pressing force of the press roll in the first cylinder and polishing the peripheral surface of the cylinder, it is possible to obtain a good finished surface close to a chest type ironer. Further, by adopting a structure in which the cylinder diameter is made small and the front and back of the linen are alternately pressed against the cylinder, the amount of steam required for ironing is reduced in addition to the above characteristics, and a large energy saving effect is obtained.

Side view showing an example of a roll ironer of the present invention having six heating cylinders The perspective view which showed arrangement of the tape provided in the press roll Schematic diagram showing the positional relationship between the press roll of the first cylinder and the second press roll. Side view showing an exit roller having irregularities on the peripheral surface Block diagram showing the main part of the laundry sticking detection device Side view showing essential parts of temperature control device for heating cylinder Side view showing an example of a roll ironer having a conventional structure

Explanation of symbols

1 (1a to 1f) Heating cylinder 4 (4a to 4f) Conveyor belt 5 Inlet roller 6 Outlet roller
6z uneven roller
9,27 Press roll
22 Laundry slot
23 Laundry outlet
30a First pass sensor
30b Second passage sensor
31 Speed sensor
32 Control unit

Claims (5)

  A belt-type roll comprising a plurality of rotating heating cylinders (1) and a conveyor belt (4) that is wound around these cylinders and synchronously rotates while pressing the laundry against the cylinder surface to convey the laundry In the ironer, the plurality of cylinders and the conveyor belt are arranged so that the laundry is fed into the peripheral surface of each cylinder from the upper part and fed out from the lower part. Lonner.   The belt-type roll ironer according to claim 1, wherein both surfaces of the laundry to be conveyed are pressed against the peripheral surfaces of the plurality of rotary heating cylinders alternately.   The belt-type roll ironer according to claim 1 or 2, wherein the diameter of the rotary heating cylinder is 600 to 700 mm.   An exit roller (6a) for guiding the conveyor belt (4a) at a position where the laundry is separated from the peripheral surface of the cylinder (1a) disposed at least at the beginning of the laundry path among the plurality of rotary heating cylinders (1). The belt-type roll ironer according to claim 1, wherein the belt-type roll ironer is a concavo-convex roller having undulations on a peripheral surface thereof, and the concavo-convex roller gives the vibration to the conveyor belt in small vertical directions.   A first passage sensor (30a) provided on the upstream side of the first rotary heating cylinder (1a) of the laundry passage for detecting the passage of the front end side of the laundry, and the first cylinder A first passage sensor (30b) provided on the downstream side for detecting the leading edge of the laundry to be conveyed; and a speed sensor (31) for detecting the loading or conveying speed of the laundry. A time obtained by adding a predetermined threshold to the time obtained by dividing the length of the laundry passage between the first passage sensor and the second passage sensor by the detection speed of the speed sensor after receiving the detection signal of The belt-type roll ironer according to claim 1, 2, or 4, further comprising control means (32) for stopping the machine when the detection signal of the second passage sensor is not received.

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