JP2008115498A - Method and machine for spreading wrapping cloth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that, in a wrapping cloth composed of obverse and reverse cloth pieces superimposed on each other (whole wrapping cloth), both the obverse and reverse cloth pieces are stuck to each other partially at many spots after washing/drying, and it has been difficult to neatly spread them respectively by a known cloth spreading machine. <P>SOLUTION: The problem is solved by the following process: a wrapping cloth S is lifted to a predetermined height in such a state that both end corners of one side of the wrapping cloth S composed of obverse and reverse cloth pieces and provided with an opening in one edge thereof via which a bedding is to be put into/pulled out are gripped by a pair of chucks 21, the chuck-gripped parts of the wrapping cloth S are set apart from each other to spread the wrapping cloth S in a lifted state. In the above process, in such a state that the wrapping cloth S is lifted and spread left and right in an attitude so that the opening is directed downward, air is blown via the opening into between both the obverse and reverse cloth pieces to separate them from each other, thus neatly spreading them respectively. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wrapping stretch method and a wrapping stretcher for stretching a wrapping cloth having an opening for taking in and out a futon on one edge in a lifted state. In addition, the wrapping covered in the present application is a bag-like quilt wrapping having an opening for putting in and out a quilt on one edge of two front and back cloth pieces, and is called a whole wrapping cloth. It is.

  In laundry factories, large-area cloths such as sheets and futon wrapping are washed and dried and then pressed with a press or folded with a folding machine. The next process equipment (hereinafter referred to as a press) is used. When supplying the fabric to (explain), it is necessary to spread the fabric neatly in advance.

  By the way, as a cloth stretcher capable of stretching a large-area cloth such as a sheet or a futon wrap and transporting the stretch cloth to the next process side, it has been conventionally shown in FIGS. There is something. In addition, as this kind of well-known cloth stretcher, there exists a thing shown by Unexamined-Japanese-Patent No. 2001-159067 (patent document 1), for example.

The cloth stretcher of FIGS. 6 to 7 functions as follows. First, the corners Sa and Sa on one side of the cloth that has been washed and dried are searched for, and the corners Sa and Sa are gripped by the chucks (a pair of feeding chucks) 11 and 11 of the feeding device 1, respectively. (The state of the symbol S in FIGS. 6 and 7). When the start button is pressed in this state, the respective input chucks 11 and 11 are moved upward while holding the cloth both end corners Sa and Sa, and the respective cloth end corners are set to the respective chucks (a pair of the predetermined positions). passing to receive a chuck) 21, 21 (the state of the code S _1), and then moves to the left and right outside the respective receiving lateral movement device chucks 21 and 21, respectively (servomotors) 22, 22, the upper side portion of the cloth Is extended (state of symbol S _{2 in} FIG. 6). Subsequently, the feeding roller 34 rotates at a high speed in the feeding direction (right rotation in FIG. 7), and the switching damper 36 is switched to the chain line (reference numeral 36 ') side, and the air inside the intake box 31 is drawn by the intake fan 33. Is sucked, and the lower end side of the cloth is sucked into the intake box 31 as indicated by reference numeral S ₄ after passing through the state of reference numeral S ₃ . In this case, this cloth S _4, are putting tension downward by the suction action of the suction fan 33, the fabric such is deployed in a square shape. Thereafter, the switching damper 36 is switched to the side shown by the solid line, and the upper side portion of the cloth S ₄ held by the receiving chucks 21 and 21 is sucked and held on the upper surface of the suction side of the suction box 41. There retracted to the chain line shown (reference numeral 41 '), the suction conveyor 51 as it is when cloth upper part is ERROR on the suction conveyor 51 (the state of the sign S _5), the said fabric such S ₅ of stretched states And it is conveyed to the press machine side through the discharge conveyor 52.

JP 2001-159067 A

  By the way, in the cloth stretcher shown in FIGS. 6 to 7, when the stretch cloth to be stretched is a single sheet such as a sheet, the left and right stretching actions by the receiving chucks 21 and 21 and the left and right moving devices 22 and 22 are as follows. The lower suction action by the intake box 31 and the intake fan 33 can be stretched relatively easily and cleanly. However, with the whole wrapping S as shown in FIGS. There were such difficulties.

  That is, the entire wrapping S shown in FIG. 8 to FIG. 9 has two pieces of cloth SA and SB on the front and back sides, and is used for putting in and out the futon on one edge (the lower edge in the state of FIG. 8 and FIG. 9). An opening P is provided. Then, in the state after washing and drying (the state before being applied to the cloth stretcher), the entire wrapping S has a large number of bags C, C, and C on each of the front and back fabric pieces SA and SB as shown in FIG. As shown in FIG. 9, both cloth pieces SA and SB are partially joined at a large number of locations (sticking portions indicated by symbol E), and a large number of air reservoirs are located between the cloth pieces SA and SB. D, D ... (becomes a slack portion) exist.

  The whole wrapping S shown in FIGS. 8 to 9 is also stretched by a cloth stretcher as shown in FIGS. 6 to 7. In this wrapping S, there are a large number of both front and back cloth pieces SA and SB. 9 (symbol E in FIG. 9), the sticking portions E and E of the cloth pieces SA and SB are obtained only by the left and right stretching action and the downward suction action by the cloth stretcher of FIGS. .. (there are many places) is not easily peeled off, and a large number of air reservoirs D, D ... remain as slack portions between the cloth pieces SA, SB. Then, when the stretch wrapping S is later fed and pressed by a press machine with the air reservoirs (slack portions) D, D... Remaining between the cloth pieces SA and SB, the slack portion is removed. There is a problem that a clear crease occurs when crushed in a folded state. In this way, the wrapping with a crease deteriorates in appearance and causes complaints from customers.

  In this type of cloth stretcher, for example, as shown in Japanese Patent Application Laid-Open No. 7-54262, a rear stretcher (a pair of right and left) is used to stretch the back side of a stretched wrapping cloth to the left and right. Although each of the extension belts has a function of slidingly contacting the back surface of the wrapping cloth and pulling the back cloth piece left and right, the front and back cloth pieces can be peeled off. There is almost no function to eliminate the air in the air reservoir between the cloth pieces. Therefore, the cloth stretcher of Patent Document 1 may be sent to the press side with the wrinkles and slack portions remaining on the cloth piece on the front side of the wrapping, in which case a clear crease occurs.

  Therefore, the present invention has an object to provide a wrapping method and a wrapping machine capable of spreading both the front and back fabric pieces neatly even when the wrapping has two front and back pieces of cloth. It is said.

  The present invention has the following configuration as means for solving the above problems.

Invention of Claim 1 of the present application The invention of claim 1 of the present application is that a pair of chucks are provided at both corners on one side of a wrapping cloth having two cloth pieces on the front and back sides and provided with an opening for inserting and removing a futon on one edge. The present invention is intended for a wrapping method in which the wrapping is stretched in a lifted state by lifting the gripping portion to a predetermined height in the gripped state and separating the chuck gripping portion of the wrapping cloth from side to side.

  In the wrapping method of claim 1, the wrapping cloth is lifted in a posture in which the opening portion faces downward and is spread left and right. It is characterized in that both the front and back fabric pieces are peeled off.

  Even if the wrapping cloth after washing and drying (wrapping cloth with two cloth pieces on the front and back sides) is lifted and stretched to the left and right, the cloth pieces on the front and back are partially joined at a number of locations. There are a large number of air reservoirs (sags). And in the state where there are a large number of air reservoirs between the two cloth pieces (the state where both cloth pieces are partially joined at a number of locations), even if the downward suction action by the suction device is applied during expansion, Each piece cannot be fully extended.

  By the way, as in claim 1 of the present application, when air is blown between the two cloth pieces from the opening portion of the stretched suspended wrapping cloth, the cloth pieces on the front and back are swelled by the blown air, and the two cloth pieces are spread over the entire surface. It peels over. Then, after inflating the wrapping cloth and sucking it from below with a suction device, the air between the cloth pieces is also sucked while the cloth pieces are tensioned downward, so that both cloth pieces are clean. The entire surface is joined in the stretched state (there is no air reservoir between both cloth pieces).

The invention of claim 2 of the present application is the invention of claim 2 of the present application, in which a pair of chucks are provided at both end corners of one side of a wrapping cloth having two cloth pieces on the front and back sides and provided with an opening for putting in and out a futon on one edge. The present invention is intended for a wrapping stretcher that lifts a wrapping cloth in a lifted state by lifting it up to a predetermined height in the gripped state and separating the grip gripping portion of the wrapping cloth from side to side.

  In the wrapping machine of claim 2, the wrapping cloth is lifted and stretched with the opening facing downward, and air is blown between the opening and the back and back cloth pieces in the suspending wrapping cloth. It is characterized by having an air blowing device to obtain.

  The wrapping and stretching machine according to claim 2 is for performing the wrapping and stretching method according to claim 1, and for the stretched and suspended wrapping cloth, the air blowing device is used to open the gap between the two cloth pieces. Air can be blown into. Therefore, the function of claim 1 can also be achieved by the wrapping stretcher of claim 2.

  In the wrapping method of claim 1 and the wrapping machine of claim 2 of the present invention, air is blown between the opening and the opposite cloth pieces from the opening to the suspending wrapping cloth.・ Even if it is a wrapping after drying (both front and back fabric pieces are partly attached and there is an air reservoir between the two fabric pieces), both the fabric pieces are easily peeled over the entire surface by the blowing air. be able to.

  Therefore, according to the invention of each claim of the present application, the front and back fabric pieces of the wrapping can be spread neatly, and there is an effect that no creases occur in the subsequent pressing process.

  Hereinafter, with reference to FIG. 1 to FIG. 5, the wrapping method and the wrapping machine according to the present embodiment will be described. The wrapping machine of this embodiment can spread a single piece of cloth such as a sheet without any problems, but in particular has two pieces of cloth SA and SB as shown in FIG. In addition, it is suitable for spreading a wrapping cloth (called a whole wrapping cloth) S provided with an opening P for putting in and out a futon on one edge.

First, the basic configuration of the wrapping machine of this embodiment will be described with reference to FIGS. This wrapping stretcher has a loading device 1, a left and right stretcher 2, a suction device 3, a delivery device 4, and a transport device 5 installed in a machine frame 10, and in a stretched and lifted state. An air blowing device 6 for blowing air between both the cloth pieces SA and SB of the wrapping S ₂ is provided.

  The machine frame 10 is supported by legs 13, 13,... At four locations on the lower surface thereof, and an air supply passage 64 (front / rearward-facing passage 66) described later is provided between the lower surface of the machine frame 10 and the floor surface. A space is provided for installing.

  The feeding device 1 has a pair of feeding chucks 11 and 11 for holding both side corners Sa and Sa of one side of the wrapping S to be spread, and each of the feeding chucks 11 and 11 is moved up and down 12 (FIG. 2). It can be moved up and down. A rodless cylinder is used for the lifting device 12.

  The input chucks 11 and 11 are juxtaposed to the left and right at intervals of about the shoulder width of a person. Each of the charging chucks 11 and 11 has a low position (height in FIGS. 1 and 2) that is the height of the charging operation by the lifting device 12 and a high position (a gripping portion of the wrapping cloth) that can suspend the entire wrapping cloth. And a height that can be transferred to a receiving chuck 21 described later). The wrapping S to be processed is lifted up to the delivery height by the lifting device 12 after the corners Sa and Sa of one side are gripped by the input chucks 11 and 11 at a low position.

The left and right extension device 2 has a pair of receiving chucks 21 and 21 that receive the respective corners Sa and Sa of the wrapping cloth from the respective input chucks 11 and 11 of the input device 1 at a predetermined height position. 21 can be moved in the left-right direction by left and right motion devices (using a servo motor capable of reversible rotation) 22 and 22, respectively. As shown in FIG. 1, the receiving chucks 21 and 21 are waiting at the same interval as the intervals between the input chucks 11 and 11 of the input device 1 in the center of the width of the machine body in the standby state. After receiving Sa and Sa (state S ₁ ), the left and right movement devices 22, 22 are moved left and right outwards until the upper side of the wrap is tensioned (the wrapping is in the stretched and lifted state indicated by S _2). Become).

  As the suction device 3 (FIG. 2), an intake box 31 is provided at a position below the portion where the receiving chucks 21 and 21 move left and right, and the suction fan 33 can suck air in the intake box 31. Yes. A switching damper 36 is provided in the intake passage 32 that connects the intake box 31 and the intake fan 33. When the switching damper 36 is positioned on the side of the reference numeral 36 'shown in FIG. The inside of the box 31 is sucked by the intake fan 33. In addition, at the upper end of the front wall of the intake box 31, two left and right feeding rollers 34, 34 are provided. The feeding rollers 34 and 34 are rotated in the feeding direction (right rotation direction in FIG. 2) at predetermined timings by motors 35 and 35, respectively.

The suction device 3 rotates the feeding roller 34 in the feeding direction and sucks the inside of the intake box 31 when the wrapping is in the stretched and lifted state (state S ₂ ). It overcame roller 34 infeed lower side of the packaging fabric S ₂ sucked into the suction box 31 (a state of code S ₄ via the state of the code S ₃ in FIG. 4), the bottom side of the case wrapping cloth The tension action works to generate a function of extending the wrapping cloth S ₄ in the stretched and suspended state downward.

The delivery device 4 includes a suction box 41 that receives the upper edge portion of the wrapping cloth (reference numeral S _{4 in} FIG. ₄ ) supported in a stretched and lifted state by the receiving chucks 21 and 21, and an intake air that sucks the inside of the suction box 41. It has a fan 42 and a telescopic cylinder 43 for moving the suction box 41 back and forth. A large number of small holes are formed in the upper surface (wrapping receiving surface) of the tip of the suction box 41, and the suction box 41 is sucked by the intake fan 42 so that the upper edge of the packing is placed on the packing receiving surface. Can be adsorbed (held). Then, the delivery device 4 adsorbs the upper edge of the wrapping cloth on the wrapping receiving surface with the suction box 41 in the front position, and then shows the suction box 41 in a chain line (reference numeral 41 ') in FIG. While retracting to the position, the upper edge of the wrapping is operated so as to be transferred onto the starting end of the transport device 5 (suction conveyor 51).

  The conveying device 5 has a suction conveyor 51 provided with a large number of small holes on the front side, and a carry-out conveyor 52 continuous to the rear end portion. The starting end portion of the suction conveyor 51 is located in the vicinity of a position just below the rear side of the front end portion (wrapping receiving surface) of the suction box 41 at the front position. An air intake box 53 is installed on the lower surface of the upper surface running portion of the suction conveyor 51, and the upper edge of the wrapping cloth can be adsorbed on the upper surface of the suction conveyor 51 by sucking the inside of the air intake box 53. ing.

  In the suction box 53 on the suction conveyor 51 side, the suction fan 33 of the suction device 3 is shared, and the suction box 31 of the suction device 3 is alternatively sucked. That is, in FIG. 2, when the switching damper 36 is in the position indicated by the solid line, intake in the intake box 31 on the suction device 3 side stops, while intake in the intake box 53 on the suction conveyor 51 side is sucked through the duct 54 and switched. When the damper is switched to the side of the reference numeral 36 'shown in the chain line, the intake air in the intake box 53 on the suction conveyor 51 side is stopped, while the intake box 31 on the suction device 3 side is inhaled. .

  As shown in FIG. 2, the air blowing device 6 for wrapping is provided with an air supply fan 61 on the back side of the machine frame 10, and an air supply passage 64 from the air supply fan 61 is provided from the back side of the machine frame 10. It is installed across the front side.

  An intake duct 62 is attached to the intake port of the air supply fan 61. A damper 63 is provided in the intake duct 62. The damper is indicated by a dotted line indicated position 63 (intake duct open position) and a chain line indicated position indicated by reference numeral 63 '(intake duct closed position) in FIG. It can be operated between. The operation timing of the damper 63 will be described later.

The air supply passage 64 has a flexible tube 65 connected to the air supply port of the air supply fan 61 and a length extending from the lower end of the flexible tube 65 to the front side from the back side of the lower surface of the machine frame. It has a front-rear facing passage 66 and a blow-out cylinder 67 protruding upward at the front end portion of the front-rear facing passage 66. The blow-out cylinder 67 has a height of, for example, about 60 to 70 cm, and the lifting cloths (S ₁ , S ₂ ) in the wrapped state shown by reference numerals S ₁ and S ₂ in FIGS. 1 and 2. The lower side is covered by a predetermined vertical length (for example, 30 to 40 mm).

  The front-rear-facing passage 66 and the blow-out cylinder 67 of the air supply passage 64 are installed on a base plate 71 laid on the floor so as to be movable back and forth by the respective wheels 72, 72,. Note that the right and left movement of the air supply passage 64 is prohibited by an appropriate guide device.

  The air supply passage 64 is formed by pushing and pulling the forward / backward passage 66 portion with the expansion / contraction cylinder 70, whereby a forward position shown by a solid line and a reverse position shown by a chain line (reference numerals 64 'and 67') in FIG. It can be moved between. When the air supply passage 64 is in the forward position (the position indicated by the solid line in FIG. 2), the blow-out cylinder 67 is positioned immediately below each of the input chucks 11 and 11 waiting at the input position. When in the retracted position (the position indicated by the chain line in FIG. 2), the blow-out cylinder 67 'is positioned directly below each of the receiving chucks 21 and 21 waiting on the upper side.

  Next, the operation method (including the wrapping method) of the wrapping machine of this embodiment will be described with reference to FIGS. In the initial state during operation, the intake fan 33 of the suction device 3, the air supply fan 61 of the air blowing device 6, the carry-out conveyor 52, and the like are operating. The switching damper 36 of the suction device 3 is in the position indicated by the solid line in FIG. 2, and the intake box 31 is in the intake stop state. Further, the blowing cylinder 67 of the air blowing device 6 is in the forward position shown by a solid line in FIG. 2 (the telescopic cylinder 70 is extended), and the damper 63 of the air blowing device 6 is in a closed state (reference numeral 63 in FIG. 3). ′ State).

  In order to supply the wrapping cloth to the wrapping stretcher, the edge portion where the opening portion P (see FIG. 8) of the wrapping cloth S is located at the working position is searched and the opening portion P is put on the blowing cylinder 67 of the air blowing device 6. On the other hand, both end corners Sa and Sa of the edge facing the opening P are respectively held by the input chucks 11 and 11 of the input device 1 (state of reference sign S in FIGS. 1 and 2). In this state, the area of the majority of the wrapping S remains adhered to both the front and back cloth pieces SA and SB.

When the start switch is pressed in this state, the damper 63 of the air blowing device 6 is actuated to the open side, and the air A from the air supply fan 61 passes through the air supply passage 64 from the tip of the blowing cylinder 67 into the wrapping S. And the wrapping expands as shown by reference numeral S 'in FIG. Immediately thereafter (or at the same time), each of the input chucks 11 and 11 is moved up to a predetermined height while holding the both-end corners Sa and Sa of the wrapping by the lifting device 12, and the both-end corners of the wrapping are moved upward. Transfer to each of the waiting receiving chucks 21 and 21 (state of reference sign S _{1 in} FIGS. 1 and 2). Simultaneously with the operation of the elevating device 12, the telescopic cylinder 70 of the air blowing device 6 is contracted, and the air supply passage 64 is retracted to the position shown by the chain line in FIG. Is located directly under the receiving chuck 21 indicated by reference numeral 67 ').

Then, each receiving chucks 21, 21 by the lateral movement device 22 moves in the lateral spacing direction is stretched to the right and left in the state lifting the hull fabric (Figure 1, in Figure 2 the letter S ₂ designates state). Previously during stroke is blown into intracapsular cloth blowing tube 67 air A continuous, thus stretched lifting sides wrapped fabric S ₂ states bulges back and forth as shown in FIG. 2 each fabric The pieces SA and SB are peeled over the entire surface.

Next, after the wrapping is spread left and right, the damper 63 of the air blowing device 6 operates to the closed side (reference numeral 63 'in FIG. 3), and then the feeding roller 34 rotates at high speed in the feeding direction. The switching damper 36 of the suction device 3 is switched to the chain line illustration (reference numeral 36 ') side. Then, stretched lifting the lower end of the packaging fabric S ₂ is sucked into the intake box 31 as shown at S ₄ via the state of the code S ₃ in FIG. 4, the capsule fabric S ₄ lifting stretched by suction action of the suction fan 33 On the other hand, downward tension is applied. At this time, the front and back cloth pieces of the stretched lifting wrapping S ₄ are previously peeled over the entire surface, so that tension is applied downward to the front and back cloth pieces, and the air between the cloth pieces is also sucked. By doing so, both the cloth pieces are joined together in a stretched state (a state in which both cloth pieces have no slack portion).

  Thereafter, from the state shown in FIG. 4, the switching damper 36 'is switched to the side shown by the solid line (the suction box 53 of the suction conveyor 51 is sucked), the receiving chucks 21 and 21 are opened, and the upper side portion of the wrapping cloth Is adsorbed and held on the upper surface on the front end side of the adsorption box 41. Subsequently, the suction box 41 moves back to the position indicated by the chain line (reference numeral 41 ') through the position indicated by the solid line in FIG. 5, while the upper side portion of the wrapping cloth is transferred onto the suction conveyor 51, and the wrapping cloth is sequentially sucked. It is conveyed to the press process side via the conveyor 51 and the discharge conveyor 52. In addition, after the lower end side of the stretched lifting wrapping is sucked into the intake box 31, the telescopic cylinder 70 of the air blowing device 6 extends so that the air supply passage 64 is shown by a chain line (reference numeral 64 ') in FIG. It moves to the forward position (the flexible tube is in the state of 65 'and the blowout cylinder is in the state of 67'), and waits at a position where the next wrapping can be applied.

  In this way, if this wrapping machine is used, even if it is a wrapping cloth (full wrapping) S having two pieces of cloth on the front and back sides, the cloth pieces on the front and back sides are pressed in a clean state. It can be transported to the process side and can be processed without creases.

  In this case, a single sheet of cloth such as a sheet can be stretched and conveyed by this wrapping stretcher. In this case, the air supply passage 64 of the air blowing device 6 is pushed into the retracted position shown in FIG. Then, the cloth does not get in the way when the cloth is held by the input chucks 11 and 11 at the work position.

It is a front view of the packaging spreader of an example of this application. It is an II-II arrow line view of FIG. FIG. 3 is an enlarged view taken along the line III-III in FIG. 2. It is an operation | movement change figure from the state of FIG. FIG. 5 is an operation change diagram from the state of FIG. 4. It is a front view of the cloth spreader of a well-known example. It is operation | movement explanatory drawing of the cloth stretcher of FIG. It is a front view of the packaging which should be processed by this application. It is IX-IX expanded sectional drawing of FIG.

Explanation of symbols

  1 is an input device, 2 is a left-right extension device, 3 is a suction device, 4 is a delivery device, 5 is a transfer device, 6 is an air blowing device, 11 is an input chuck, 21 is a receiving chuck, 22 is a left-right motion device, and 31 is Intake box, 33 is an intake fan, 34 is an infeed roller, 61 is an air supply fan, 62 is an intake duct, 63 is a damper, 64 is an air supply passage, 67 is a blow cylinder, 70 is an expansion cylinder, S is a wrapping cloth, SA and SB are cloth pieces, Sa is a wrapping corner, and P is an opening.

Claims (2)

A pair of corners (Sa, Sa) on one side of the wrapping cloth (S) having two cloth pieces (SA, SB) on the front and back sides and provided with an opening (P) for putting in and out a futon on one edge. The wrapping cloth (S) is lifted by lifting it to a predetermined height while being gripped by the chucks (21, 21), and separating the chuck gripping portions (Sa, Sa) of the wrapping cloth (S) from side to side. A method of extending the wrapping cloth,
In a state where the wrapping (S) is lifted in a posture in which the opening (P) faces downward and is stretched to the left and right, both the front and back cloth pieces ( Air (A) is blown between (SA, SB) so that the cloth pieces (SA, SB) are peeled off.
A method of spreading a wrapping characterized by that. A pair of corners (Sa, Sa) on one side of the wrapping cloth (S) having two cloth pieces (SA, SB) on the front and back sides and provided with an opening (P) for putting in and out a futon on one edge. The wrapping cloth (S) is lifted by lifting it to a predetermined height while being gripped by the chucks (21, 21), and separating the chuck gripping portions (Sa, Sa) of the wrapping cloth (S) from side to side. It is a wrapping machine that can be stretched at
In a state where the wrapping (S) is lifted with the opening (P) facing downward and stretched left and right, both the front and back cloth pieces (from the opening (P) in the stretched suspending wrapping (S) ( An air blowing device (6) capable of blowing air (A) between SA and SB),
This is a wrapping cloth stretcher.

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