EP0909257A1 - Method for coating a mattress and apparatus for coating a mattress - Google Patents
Method for coating a mattress and apparatus for coating a mattressInfo
- Publication number
- EP0909257A1 EP0909257A1 EP97917318A EP97917318A EP0909257A1 EP 0909257 A1 EP0909257 A1 EP 0909257A1 EP 97917318 A EP97917318 A EP 97917318A EP 97917318 A EP97917318 A EP 97917318A EP 0909257 A1 EP0909257 A1 EP 0909257A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transportation means
- coating
- mattress
- piece
- coating apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B68—SADDLERY; UPHOLSTERY
- B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
- B68G7/00—Making upholstery
- B68G7/05—Covering or enveloping cores of pads
- B68G7/051—Mattress-filling devices, i.e. sliding a tick or preformed cover over a cushion or sliding a cushion into a tick or preformed cover, e.g. by means of a press or of a depression table
Definitions
- the invention relates to a method for coating a mattress presented in the introductory part of Claim 1.
- the invention relates also to an appa ⁇ ratus for coating a mattress according to the method.
- Particularly mattresses made of cellular plastic and raw rubber are coated with a fabric or a corresponding coating, inter alia for improving the comfort of use and appearance of the mattress.
- the coating is usually releasable, bag-like, wherein the mattress can be placed in the inner volume of the coating.
- the coating is provided with a sealable opening which is preferably slightly smaller than the cross- sectional surface of the mattress, whereby the mattress can be inserted to the coating through this opening.
- the coating must be re ⁇ moved from above the mattress for cleaning.
- the means for clos ⁇ ing the opening formed in the coating for example a zipper, is opened, whereby the mattress can be drawn out.
- the placement of the mattress back into the coating is often difficult, because the perimeter of the opening is often smaller than the perimeter of the cross-section of the mattress in the direction of inserting the mattress.
- the plastic bag reduces the surface friction between the coating and the mattress, which will also make it easier to place the mattress into the coating.
- the plastic bag is opened, whereby air is allowed to flow into the plastic bag and the mattress returns substan ⁇ tially to its original size.
- This method has e.g. the disadvantage that the suction device is com- plicated and makes noise at the suction stage.
- Installation of the plastic bag in the coating device and placing the mattress into the plastic bag increase the work stages required for coating the mattress and prolong the time of coating the mattress.
- the plastic bag makes the surface of the mattress harder and causes a sweaty feeling. Further, the possible rustling sound produced by the plastic bag may cause an uncomfort ⁇ able feeling. Also, returning of the compressed mattress into its original size may take a relatively long time, which is not desirable in view of usability of the mattress.
- German application publication DE-14 85 526 presents a method and an apparatus for coating a mattress, whereby the mattress is moved with band-like conveyors in the horizontal direction.
- the band-like con ⁇ veyors are arranged in a wedge-like relation to each other, whereby they form a sha ⁇ angle and thus induce a contraction of the mattress in the cross-sectional direction.
- the mattress is led into the inner volume of a bag-like coating.
- there are stationary guide means which keep the mattress compressed at the stage when the mattress is led into the inner volume of the bag-like coating.
- the bag-like coating is situated outside these guide means.
- a disadvantage in this solution is the fact that the friction between the mattress and the guide means will considerably increase the force required for transportation of the mattress.
- Another disadvantage in the apparatus presented in this German application publication is the fact that it can only be used for coating mattresses of substantially uniform size. If there is a need to coat mattresses of different sizes, a different apparatus must be built for each mattress size.
- the invention gives considerable advantages to the methods and appa ⁇ ratuses of prior art.
- the method according to the invention is quick and it can be implemented with a relatively inexpensive apparatus, whereby the use of the method and apparatus of the invention is inexpensive also when coating in smaller scale.
- the steplessly adjustable coating apparatus of the invention makes it possible to coat easily mattresses of different sizes. Furthermore, by using the method of the invention, the use of various plastic bags and other auxiliary means is avoided. Thus, the properties of the coated mattress are not impaired.
- Another advantage is that by using the method of the invention, the coating of the mattress can be conducted quickly, whereby the coating costs will be reduced.
- the coating device of the invention is almost noiseless and does not raise dust.
- Fig. 1 shows the apparatus according to an advantageous em- bodiment of the invention seen from above, and
- Fig. 2 shows a detail in cross-section at point 1 — I in Fig. 1.
- the placement of a mattress 1 into the inner volume of a coating 8 can be conducted according to a coating apparatus 2 according to an ad ⁇ vantageous embodiment shown in Fig. 1 for example in a way that the mattress 1 to be coated is placed on a mattress feeding conveyor 3.
- the mattress feeding conveyor 3 consists advantageously of two con ⁇ veyor belts 3a, 3b known as such. Rollers are provided at both ends of the conveyor belt and, if necessary, also auxiliary rollers in the inter ⁇ mediate section of the conveyor belt. Power transmission is advanta ⁇ geously coupled to a roller placed at one end of the conveyor belt 3a, 3b and whose rotation makes the conveyor belt 3a, 3b move.
- the distance d1 between horizontal transportation means 4 is ad ⁇ justed in a way that the distance d1 is slightly smaller than the thickness of the mattress 1 (Fig. 2).
- the distance d2 be- tween vertical transportation means 5 is adjusted in a way that the dis ⁇ tance d2 is slightly smaller than the width of the mattress 1.
- the dis ⁇ tance d1 between the horizontal transportation means 4 can be ad ⁇ justed advantageously by turning on a first electric motor (not shown) coupled via a first transmission mechanism (not shown) to the support means of the horizontal transportation means 4.
- the first transmission mechanism can comprise e.g.
- the adjustment of the distance d2 between the vertical transportation means 5 is advantageously conducted with a second motor 10.
- the second motor 10 is coupled to a second transmission mechanism, such as a second screw arm 11.
- the frame parts 12a, 12b of the coat ⁇ ing apparatus 2 are provided with second screw means fitting to the threading of the screw arm.
- the second motor 10 revolves the screw arm 10 in the first direction, the second screw means make the frame parts 12a, 12b move farther apart from each other.
- the first ver ⁇ tical transportation means 5a move along with the first frame part 12a, and the second vertical transportation means 5b move along with the second frame part 12b, wherein the distance d2 between the vertical transportation means 5a, 5b will increase.
- the conveyor means 4, 5 consist preferably of conveyor belts.
- the conveyor means are advantageously elongated, wherein the conveyor means 4, 5 are at their both ends provided with a roller or the like for generating the movement of the conveyor belt.
- section of the conveyor belt which is between the end rollers at each time, against the surface of the mattress 1, moves in the direction of transferring the mattress, wherein also the mattress will move in this direction.
- the other section of the conveyor belts which is be ⁇ tween the end rollers on the other side at the time, moves in the oppo ⁇ site direction.
- the conveyor means 4, 5 are arranged in relation to each other advantageously so that when the mattress 1 is moved on the feeding conveyor 3 towards the transportation means 4, 5, the mat ⁇ tress 1 is first subjected to the effect of the vertical transportation means 5 before the horizontal transportation means 4.
- the coating 8 is placed in the coating apparatus 2. Also coating support means 7 are fixed to the transportation means 4, 5, whereby the coating 8 can be placed around the support means 7. The coating support means 7 make the feeding opening 9 of the coating open preferably to its maximum size. At this stage, the coating 8 is placed advantageously so that the transportation means 4, 5, are partly within the inner volume of the coating, at least one end of the transportation means 4, 5. By the effect of the move- ment of the transportation means 4, 5, the mattress 1 moves gradually towards the other end of the transportation means 4, 5.
- the other end of the transportation conveyors moving in a direction opposite to the transportation direction of the mattress, makes the coating 8 move in this direction, which will facilitate the coating 8 to re- main in its position during coating.
- the feeding con ⁇ veyor 3 and the transportation means 4, 5 can be started.
- the mattress 1 begins to move towards the feeding opening 6 formed by the frame parts 12a, 12b.
- the coating 8 can also be supported manu- ally at the support means 7 to secure that the coating 8 will not disen ⁇ gage too early from the coating apparatus 2.
- the transportation means 4, 5 reduce the perimeter of the mattress to some extent at least at the transportation means 4, 5.
- Fig. 2 in which the cross-section of the mattress is shown by broken lines as an example.
- the mattress 1 is gradually moved inside the coating 8.
- the transportation means 4, 5 keep on pushing the mattress forward.
- the mattress 1 is wholly inside the inner volume of the coating 8, after which the mattress 1 and the coating 8 disengage from the coating apparatus 2 and the mattress fills substantially the whole inner volume of the coating 8. Following this, the feeding open ⁇ ing 9 can be closed.
- the distance d1 , d2 between the transportation means 4, 5 can be adjusted in a stepless manner, it is possible to use the coating apparatus of the invention for coating mattresses of different sizes.
- a formula control device to the coating ap ⁇ paratus according to the invention.
- the most common mattress sizes can be stored in the memory of the formula control device, whereby the size of the mattress to be coated can be selected advantageously by pressing one button.
- the for ⁇ mula control device will identify which button was pressed and will ad ⁇ just the distance d1 , d2 between the transportation means to corre ⁇ spond to the selected mattress size.
- Mattress sizes which are not stored in the memory of the formula control device can be coated e.g. by entering the readings corresponding to the thickness and width of the mattress via the keyboard of the formula control device.
- the coating apparatus 2 comprises support strips 14 coated preferably with Teflon, whereby the mattress to be coated is better kept in its shape in the area between the horizontal transporta ⁇ tion means 4. Moreover, the support strips 14 reduce the surface fric ⁇ tion between the mattress 1 and the coating 8, facilitating the place- ment of the mattress 1 in the inner volume of the coating 8.
- the density/weight ratio of mattresses 1 can vary to a great extent, the resiliency and compressibility of the mattress varying accordingly.
- the user of the mattress can select a mattress most suitable to his/her weight.
- the coating apparatus 2 of the invention it is pos ⁇ sible to use mattresses having different density/weight ratios. If neces ⁇ sary, it is possible to reduce the diminishing of the perimeter of mat ⁇ tresses with a higher density/weight ratio in the apparatus, taking into account the perimeter of the feeding opening 9 of the coating 8.
- the density/weight ratio of the mattress can be used as one parameter in the formula control device.
- a mattress manipulator in connection with the coating apparatus 2 of the invention, whereby stacks of mattresses are placed in the manipulator, preferably mattresses of equal size in the same stack.
- the manipulator takes one stack at a time for proc ⁇ essing.
- the manipulator moves one mattress at a time from the stack to the feeding conveyor 3 of the coating apparatus 2.
- the operator of the coating apparatus 2 puts a coating 8 fitting the mattress 1 in its place and turns on the coating apparatus 2, as described above in the de ⁇ scription.
- the manipulator will take the next stack of mattresses for processing, and the operator will set the distances d1 , d2 of the transportation means 4, 5 of the coating apparatus 2 to correspond to the mattress size to be processed.
- the invention has been described above in connection with coating a mattress, the invention can also be applied for coating other pieces preferably made of a resilient material, with a coating 8.
- coatings of sofa cushions and seat cushions are designed to be baggy, and they have a feeding opening 9 for removing the cushion from the coating 8 e.g. to be washed and placed back in the cushion 8.
- the inner volume of the coating 8 is advantageously slightly smaller than the free volume of the cushion and that the perimeter of the feeding opening 9 is smaller than the perimeter of the cushion in a direction perpendicular to the direction of feeding.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI961674 | 1996-04-17 | ||
FI961674A FI100518B (en) | 1996-04-17 | 1996-04-17 | A method for coating a mattress and a mattress coating device |
PCT/FI1997/000235 WO1997038939A1 (en) | 1996-04-17 | 1997-04-16 | Method for coating a mattress and apparatus for coating a mattress |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0909257A1 true EP0909257A1 (en) | 1999-04-21 |
EP0909257B1 EP0909257B1 (en) | 2002-12-18 |
Family
ID=8545861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97917318A Expired - Lifetime EP0909257B1 (en) | 1996-04-17 | 1997-04-16 | Method for coating a mattress and apparatus for coating a mattress |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0909257B1 (en) |
AT (1) | ATE229919T1 (en) |
AU (1) | AU2570597A (en) |
DE (1) | DE69717996T2 (en) |
FI (1) | FI100518B (en) |
WO (1) | WO1997038939A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH508551A (en) * | 1970-04-15 | 1971-06-15 | Roesler Maschf J | Mattress making machine |
DE2700830A1 (en) * | 1977-01-11 | 1978-07-13 | Ernst Langenscheidt | Continuously operating mattress or cushion core enveloping machine - has concave tray with converging edges stabilising cushion core on enveloping |
DE2856599A1 (en) * | 1978-12-29 | 1980-07-10 | Roesler Maschf J | Belt feed system for mattress covering machine - has tilting pressure arms carrying rollers at inlet ends of belts |
US4711067A (en) * | 1984-02-03 | 1987-12-08 | Giuliano Magni | Method of packaging a single mattress to a small size to be conveniently carried |
ES2158032T3 (en) * | 1995-01-09 | 2001-09-01 | Riboldi Servo Matic S R L | UPHOLSTER PRESS FOR UPHOLSTERY PARTS. |
-
1996
- 1996-04-17 FI FI961674A patent/FI100518B/en not_active IP Right Cessation
-
1997
- 1997-04-16 EP EP97917318A patent/EP0909257B1/en not_active Expired - Lifetime
- 1997-04-16 WO PCT/FI1997/000235 patent/WO1997038939A1/en active IP Right Grant
- 1997-04-16 DE DE69717996T patent/DE69717996T2/en not_active Expired - Fee Related
- 1997-04-16 AT AT97917318T patent/ATE229919T1/en not_active IP Right Cessation
- 1997-04-16 AU AU25705/97A patent/AU2570597A/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO9738939A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU2570597A (en) | 1997-11-07 |
DE69717996T2 (en) | 2003-04-30 |
EP0909257B1 (en) | 2002-12-18 |
ATE229919T1 (en) | 2003-01-15 |
DE69717996D1 (en) | 2003-01-30 |
WO1997038939A1 (en) | 1997-10-23 |
FI100518B (en) | 1997-12-31 |
FI961674A (en) | 1997-10-18 |
FI961674A0 (en) | 1996-04-17 |
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