CN1251959C - Method and system for forming strings of pocketed coil springs - Google Patents
Method and system for forming strings of pocketed coil springs Download PDFInfo
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- CN1251959C CN1251959C CNB008062250A CN00806225A CN1251959C CN 1251959 C CN1251959 C CN 1251959C CN B008062250 A CNB008062250 A CN B008062250A CN 00806225 A CN00806225 A CN 00806225A CN 1251959 C CN1251959 C CN 1251959C
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B68—SADDLERY; UPHOLSTERY
- B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
- B68G9/00—Placing upholstery springs in pockets; Fitting springs in upholstery
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- Mattresses And Other Support Structures For Chairs And Beds (AREA)
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Abstract
A string (12) of pocketed coil springs (14) is formed by inserting compressed springs between upper and lower plies of a folded, preferably thermally weldable fabric (16). The springs are maintained in a compressed configuration while a longitudinal seam (54) joins the free edges of the thermally welded fabric (16) together. Subsequently, the compressed springs (14) are allowed to relax into an expanded configuration. The string (12) of pocketed coil springs (14) is advantageously formed without the need for reorienting the springs (14) after being inserted between the plies (24, 26) of the fabric (16) and thereby avoiding the disadvantages and complications associated with turning or reorienting the pocketed coil spring (14).
Description
Technical field
The present invention relates generally to the spring assembly that is used for mattress, mat etc., more particularly, relates to a kind of bagged spiral spring that links to each other respectively of mattress, mat, spring installation etc. and method and system that forms this strings of pocketed coil springs of being used for.
Background technology
Bagged spiral spring is commonly referred to as a kind of Marshall structure, and wherein each coil spring is enclosed in its oneself fabric bladder or the bag.This capsule or bag usually are limited between the two-layer fabrics band that links together in the mode that line transversely keeps at a certain distance away along strip direction.This two-layer fabrics band forms double width is fabric folded by line of centers along the longitudinal substantially, thereby allow along the overlapping layer of the opposite edges that do not link to each other of this band along the longitudinal seam interconnect, thereby spring is inserted between these layers after sealing be limited at connect between the x wire bag.
There have been many technology to relate to the manufacturing of bagged-spring, some of them propose to form bag in tissue layer before inserting the line spring, other propose between slice layer, to insert after the compression line spring by along the x wire between the adjacent springs with two-layer mutual stitching or link together and form bag.No matter adopt which kind of technology, usually by along the straight line of the free edge that is parallel to layer with two-layer stitching or the mode that is welded together after inserting spring, fabric is enclosed in spring around.By sewing up technology that two tissue layer are linked together recently widely by by adopting heat-sensitive fabric and ultrasonic wave connection technology to substitute.In United States Patent(USP) Nos. 4,439,977; 4,234,983; With 5,613, disclosed in 287 and be used to make the known system of strings of pocketed coil springs and the embodiment of technology.
Specifically, in U.S. Patent No. 4,439, disclosed a kind of coil spring that is closed in by in the single bag of two elongated fabric bands that can be constituted by thermal welding overlapping layer together that is used for making in 977.This fabric band is prolonging a guide channel and is being transferred, and compression spring is inserted between these tissue layer in the meantime, and the axle of these springs is substantially perpendicular to the plane of tissue layer.Afterwards, by thermal welding together, spring keeps compressive state to these tissue layer simultaneously on vertical and horizontal, to form strings of pocketed coil springs.After thermal welding, bagged spiral spring is by the single-revolution device, and these springs are rotated about 90 degree usually in textile bags in the meantime, thereby reorientation is to the position of axle perpendicular to the fabric band of spring.
A concrete shortcoming of the method for this manufacturing bagged spiral spring is that in rotation process, spring can tangle or collude with together, and can not obtain their accurate position.Therefore, need pay extra and expensive work, so that spring reorientation and untie entanglement, thereby they are placed to desired form and orientation.Even spring does not tangle or hook around together, they accurately are registered on the desired position so that the longitudinal axis of spring is parallel to each other basically and to be parallel to the transverse seam that limits single bag still very difficult.
Another common issue with of such operation is, during the upset of bagged-spring, no matter hook is around together or whether success of entanglement and switching process for spring, the fabric that surrounds this spring often is damaged, tears, punctures etc.In one form, as in U.S. Patent No. 4,439, the same disclosed in 977, spring is hit by pedal, to influence the upset of spring in bag.Obviously, with pedal on bag repeatedly the strike meeting bring significant damage to textile material, and to be proved for accurately being positioned at spring in the textile bags be insecure.When this phenomenon took place, impaired bag should be repaired or be removed from spring, thereby has interrupted this process, and needed the intervention of a large amount of operating personals, thereby the standing time of producing bagged spiral spring is longer.
US 5,749, and 133A has disclosed a kind of method that is used to form bagged-spring, and wherein fabric is formed a kind of big envelope and compressed spring is inserted into in this big envelope.Then that pkt. flap is folding and connect with longitudinal seam.Form single bag and make rotation in this bag of spring by transverse seam, so that their longitudinal axis is parallel to transverse seam.The prior art exists equally and need make single spring upset or reorientation and cause problems such as fabric damage easily in bag.
Summary of the invention
Therefore, the method and system that needs a kind of strings of pocketed coil springs that be used to be shaped, it can overcome the above-mentioned shortcoming of prior art, and do not need spring is overturn in bag so as with spring shaft with a kind of parallel substantially and orderly arrangement aim at, and do not need the operating personal intervention so that spring is thrown off or untied, do not need to repair the impaired fabric that surrounds spring in addition.In addition, for a long time, need to be provided at the method and system that strings of pocketed coil springs is produced in industrial feasible being used to, this method and system is owing to need minimum manual intervention and relevant resource always, thereby saved cost and labour power.
Thereby the present invention has overcome above-mentioned and other shortcoming that prior art exists by a kind of method and system that is used for producing strings of pocketed coil springs that has improved is provided, this spring excellent performance, and because it only needs minimal amount of material and labour power, so saved cost.Inserting mode in the fabric into according to the shaping of bag of the present invention and spring has avoided needs that spring is overturn in bag and has reorientated, a kind of effective and failure-free manufacturing system and relevant method also are provided simultaneously, have been used for producing reliably the spring of in not impaired textile bags, aiming at all the time.
According to an aspect of the present invention, provide a kind of method that forms strings of pocketed coil springs, may further comprise the steps: carry a collection of fabric, so that the first and second parallel substantially tissue layer are provided; A series of by compression springs in the axial direction are inserted between first and second tissue layer; By form longitudinal seam near the free edge of first and second tissue layer described first and second tissue layer are linked together, described tissue layer also is being joined together with free edge opposed edges place; Make spring with and its when being inserted between these layers same orientation in fabric, partly stretch at least vertically, thereby the longitudinal axis of each spring is substantially perpendicular to described longitudinal seam; Form transverse seam between the adjacent springs in fabric, thereby each spring is wrapped in the textile bags, wherein, after first and second tissue layer being linked together by the formation longitudinal seam, allow spring to stretch at least in part, and transverse seam is formed the longitudinal axis that is parallel to the described spring that stretches to small part substantially.
According to a further aspect in the invention, provide a kind of system that is used to form strings of pocketed coil springs, wherein each spring is wrapped in the bag that is formed by fabric, and this system comprises: the fabric section of providing that is used to provide parallel substantially first and second tissue layer; Spring inserts section, this insertions section be in axial on by compression spring be inserted in individually between first and second tissue layer; Be positioned at the longitudinal seam shaped segment that spring inserts the section downstream, this longitudinal seam shaped segment links together by near first and second tissue layer of the formation longitudinal seam free edge of first and second tissue layer with fabric, and these tissue layer also are being connected with free edge opposed edges place; The spring stretch section, allow spring along and same orientation when being inserted between these tissue layer between first and second tissue layer, stretch at least in part, thereby the longitudinal axis of each spring is substantially perpendicular to longitudinal seam; Transverse seam forms section, and it forms transverse seam in fabric, thereby with every pair of adjacent spring separately, thereby each spring is wrapped in the textile bags when being inserted into; And transportation section, this transportation section makes fabric and the spring that is mounted in it pass corresponding section forward, wherein, described spring stretch section is positioned at the downstream of longitudinal seam shaped segment, and the transverse seam shaped segment forms the horizontal line seam of the longitudinal axis be parallel to the spring that stretches to small part substantially.
According to another aspect of the invention, a kind of strings of pocketed coil springs is provided, it comprises two elongated tissue layer, they are joined together by near the longitudinal seam the free edge of these tissue layer, these tissue layer are joined together in the edge of relative free edge, and has transverse seam, to form bag, and spring is wrapped in each bag, and has substantially a longitudinal axis perpendicular to longitudinal seam, this longitudinal seam is set on the side of the spring between its end, wherein the free edge of each tissue layer and the fabric between the longitudinal seam are folded, overlapping on another, thereby form and a bag two-layer band that contacts, and this band links to each other with bag by transverse seam.
According to another aspect of the invention, provide a kind of method that forms strings of pocketed coil springs, may further comprise the steps: carry a collection of fabric, so that the first and second parallel substantially tissue layer are provided; A series of springs by compression are inserted between first and second tissue layer; By near the free edge of first and second tissue layer, forming longitudinal seam so that described first and second tissue layer are linked together; These tissue layer also are being joined together with free edge opposed edges place; Form transverse seam between the adjacent springs in fabric, thereby when being inserted in each spring in the textile bags, it is wrapped in wherein, wherein, described inserting step comprises inserting to have the compression spring of non-linear shape profile substantially, and the forming step of transverse seam comprises transverse seam is formed substantially at least a portion profile corresponding to spring.
According to another aspect of the invention, provide a kind of system that is used to form strings of pocketed coil springs, wherein each spring is wrapped in the bag that is formed by fabric, and this system comprises: the fabric section of providing that is used to provide parallel substantially first and second tissue layer; Spring inserts section, inserts the section place at this, each in the axial direction by compression spring be inserted in individually between first and second tissue layer; Be positioned at the longitudinal seam shaped segment that spring inserts the section downstream, this longitudinal seam shaped segment links together by near first and second tissue layer of the formation longitudinal seam free edge of first and second tissue layer with fabric, and these tissue layer also are being connected with free edge opposed edges place; The spring stretch section allows spring to stretch at least in part between first and second tissue layer; Transverse seam forms section, and it forms transverse seam in fabric, thereby with every pair of adjacent spring separately, each spring is wrapped in the textile bags when being inserted in wherein thus; And the transportation section, this transportation section makes fabric and the spring that is mounted in it pass corresponding section forward, and wherein, each spring has nonlinear profile between its top and bottom, and described transverse seam has the non-linear profile consistent with spring configuration.
According to another aspect of the invention, a kind of strings of pocketed coil springs is provided, it comprises two elongated tissue layer that linked together by near the longitudinal seam the free edge of tissue layer, these tissue layer are joined together in the edge with respect to free edge, and has transverse seam, to form bag, and spring is wrapped in each bag, wherein, each spring has nonlinear profile between its top and bottom, described transverse seam has the non-linear profile consistent with spring configuration.
The present invention preferably at first is inserted in compressed coil spring between the upper and lower layer of the thermal welding fabric that is folded.The present invention adopts a kind of continuous production technology, and fabric is directed or is pulled through spring and inserts section, thereby compression spring is inserted between the folding tissue layer one by one individually with certain interval when fabric inserts section by spring.These springs remain on compressive state between tissue layer, form longitudinal seam simultaneously in fabric, near the longitudinal seam opposite with the longitudinal folding line of fabric these two tissue layer are linked together.Because but this fabric is the thermal welding material, so longitudinal seam preferably forms by co-operating hot melting connector and platform.After spring was forward by vertical welding section, this spring was allowed in fabric lax and is extended into the position of setting, and the longitudinal axis of its medi-spring is substantially perpendicular to the longitudinal seam of fabric.Preferably, according to each optional embodiment of the present invention, the lax and stretching, extension of spring in fabric is what to be controlled by a pair of rotatable parts on the opposite side that is positioned at spring.In currently preferred embodiment, rotatable parts can be a pair of wheels in relative rotation, and its turning cylinder is parallel to the longitudinal axis of spring substantially.These are taken turns and comprise a plurality of arc grooves, and these fillister joints are together partly to surround each spring between extensin period.Perhaps, these rotatable parts can comprise a pair of belt, and this belt passes through on a pair of roller that separates each other.Fabric and spring pass through between these belts, and the spacing distance between these belts increases along downstream direction, thus the stretching, extension of controlling spring between belt.In arbitrary embodiment, spring is supported during it is extended into the erection position.
After these springs have stretched, preferably form single bag at the fabric that is parallel to substantially between each spring of spring shaft by the sealing-in of horizontal welding head in fabric.In fabric, form transverse seam, to finish the single bag that is used for each spring.At last, a pair of delivery wheel opposed and that rotate guides forward or mobile bagged-spring string, thereby the spring that fabric and quilt are sealed passes through described each section forward.
Preferably, being oriented in the whole bag forming process of spring remains unchanged substantially, thereby avoided the reorientation of spring in bag, upset etc.In addition, be formed on the side of single spring bag that longitudinal seam in the fabric is arranged in resulting strings of pocketed coil springs, thereby avoided the phenomenon that is called as " false bulk " that occurs in the prior art.Should " false bulk " phenomenon make to occur when being kept end with spring at a distance of certain distance by cover material at the spring of longitudinal extension, thus when mattress when purchased at the beginning, this distance is quite even.Yet after this mattress or mat used a period of time, the longitudinal extension seam in this strings of pocketed coil springs or other unnecessary fabric can collapse under pressure, and therefore stayed the zone of extruding or local.Along with the continuation of this mattress or mat is used, the whole stayed surface of this mattress or mat will collapse under pressure equally, and flat basically phenomenon will occur.The user may not will appreciate that the root of this phenomenon, and thinks that it is a defective in mattress or the mat.
In the present invention, avoided false bulk problem on its side, also avoided in bag, to make single spring upset or reorientation and damage and other the relevant problem that are caused simultaneously fabric thereby be located at by longitudinal seam with the spring string.
Its purpose is that also another feature of the present invention that reduces false bulk with relevant problem is particularly useful for barrel spring or other spring with non-linear profile.By adopting this spring, the shape of the transverse seam between the adjacent springs in spring will be consistent with spring configuration, thereby around spring, produce a kind of tighter textile bags that more matches, to avoid around spring, occurring pack or too much lax fabric.
Description of drawings
By following detailed description and in conjunction with the accompanying drawings will purpose of the present invention easier to understand and feature, wherein:
Fig. 1 is according to the system of first embodiment that produces strings of pocketed coil springs of the present invention and the exemplary birds-eye view of correlation technique;
Fig. 2 is the lateral plan of the system and method for Fig. 1;
Fig. 3 is the view that is similar to Fig. 1 according to second optimum decision system of the present invention and correlation technique;
Fig. 4 is the lateral plan of the system and method for Fig. 3;
Fig. 5 is the block diagram of strings of pocketed coil springs produced according to the invention;
Be wrapped in the single helical spring section-drawing in textile bags of Fig. 6 for cutting open along the straight line 6-6 of Fig. 5;
Fig. 7 is the lateral plan according to the strings of pocketed coil springs of of the present invention one optional embodiment production; And
Fig. 8 is used for the partial perspective view of welded joint of the transverse seam in the string of welding Fig. 7.
The specific embodiment
With reference to Fig. 1, this figure demonstrates the system 10 of the string 12 that is used to form bagged spiral spring 14 according to the present invention and first currently preferred embodiment of correlation technique.Preferably, but the fabric 16 of thermal welding as known in the art walk around roller 20 from conveying roller 18 as shown in Figure 1 and carry.Perhaps, this fabric 16 can be a material cotton or that other is suitable.This fabric 16 usually in the vertical around longitudinal folding line 22 by folded in half, this fold line is roughly consistent with the longitudinal centerline of fabric 16.This fabric 16 is folded around longitudinal folding line 22, with form fabric 16 first on tissue layer 24 and second time tissue layer 26, each tissue layer all has the free edge 28 that separates with longitudinal folding line 22.This fabric that is folded 16 passed through upper and lower input roller 30,32 before entering spring insertion section 34.These rollers 20,30 and/or 32 can be driven in rotation.
Spring inserts section 34 and comprises that having cup-shaped spring holds the reciprocal insertion plunger 36 of front end 38 to hold compressed coil spring 14 therein.This plunger 36 extends compressed spring 14 is inserted between the layer 24,26, and withdrawal is so that hold another compressed spring that is used for inserting 14 next time then.Spring 14 is formed and compresses, and is installed on the spring insertion plunger 36, and this fabric 16 can be folded according to multiple known system that is used for this purpose and method one.Perhaps, this spring inserts section 34 can comprise two U-shaped sides, the fabric 16 in-to-in springs 14 that these two sides are keeping confined state and guiding being folded on this spring 14.In the method, spring 14 is by a joystick (not shown) clamping, and reply these sides simultaneously.
When fabric 16 passes system 10 forward, as among Fig. 1 and 2 particularly shown in, be inserted in the spring 14 of layer between 24,26 and be maintained between the upper and lower lip-deep corresponding upper and lower stay bearing plate of fabric 16 with compressive state.Preferably, stay bearing plate 40,42 is centering between the free edge 28 of fabric 16 and longitudinal folding line 22, and can comprise that being positioned at spring inserts near the section 34 wide region 44, when fabric 16 and spring 14 forward during the subsequent section by this system 10 this spring insert section and narrow to gradually on the zone of the narrower separating part 46 between the plate 40,42 downwards.
In addition, a plurality of correcting wheels that separate 48 of rotating of being used for are installed near the longitudinal folding line 22 of fabric 16 and free edge 28, with control and guiding fabric 16 motions to pass this system 10.These correcting wheels preferably include a plurality of projections 50, and fabric 16 in these projection snap-ins, so that the motion of fabric 16 is remained in the orientation with respect to each section of system 10 and component alignment.
As illustrated in fig. 1 and 2, longitudinal seam forms section downstream that 52 springs that are positioned at the free edge 28 of close fabric 16 insert section 34.After compressed spring 14 was inserted between the layer 24,26, longitudinal seam formed section 52 and near their related free edge edge 28 levels 24,26 of fabric 16 is linked together, thereby initially spring 14 is wrapped in the fabric 16.In current preferred embodiment, longitudinal seam 54 is formed between the hot melting connector 56, and this welded joint 56 pumps with respect to the platforms 58 that are positioned at below the lower floor 26, so that carry out respectively and break away from welding.This reciprocating welded joint and platform coact, and with by corresponding layer 24,26 being welded together for the known technology of those of ordinary skills with super sonic, heat energy or other, thereby form longitudinal seam 54 in fabric 16.Perhaps, platform 58 moves reciprocally simultaneously that hot melting connector 56 keeps motionless.Spring 14 keeps pressurized during the shaping of longitudinal seam 54 and welding, and their longitudinal axis 60 is substantially perpendicular to longitudinal seam 54.It should be understood that and to adopt other to be used for welding layer 24,26 within the scope of the invention to form the device of seam.
One first transportation section 62 is positioned at the downstream that longitudinal seam forms section 52, and in currently preferred embodiment, it comprises four load-transfer devices 64.Each passes through on the forward and backward roller 66,68 that separates with 64, and wherein at least one roller is driven in rotation.First couple of load-transfer device 64a at 62 places, first transportation section contacting near the fabric 16 longitudinal folding line 22 that passes through therein.As illustrated in fig. 1 and 2, another is near the fabric 16 the load-transfer device 64b contact longitudinal seam 54.When load-transfer device 64 when the roller that separates 66,68 is contacting motion with fabric 16, fabric 16 is drawn out from feed rolls 18 by tract and towards downstream spring stretch section 70 and advances.
The spring 14 of pressurized can be in lax and stretching, extension in the fabric 16 at spring stretch section 70.In first embodiment, as shown in Figure 1, the stretching, extension of spring 14 is controlled by a pair of rotatable parts in relative rotation 72 on spring 14 both sides.Usually the longitudinal axis 60 that is parallel to spring 14 according to the pivot center 74 of each rotatable parts 72 of first currently preferred embodiment of Fig. 1.Each rotatable parts 72 comprises the groove 76 of a plurality of arcs, and each groove combines with the groove with similar structures 76 in the corresponding rotatable parts 72 on spring 14 both sides, partly surrounding each spring 14, thereby controls its stretching, extension.In addition, rotatable parts 72 help to make spring 14 and fabric 16 to advance towards the transverse seam formation section 78 that is positioned at its downstream.
Transverse seam forms between section 78 each adjacent springs in fabric 16 and forms transverse seam, these springs in fabric 16 the pressurized shape from them begin to stretch.Preferably, transverse seam form that section 78 comprises transverse seam welded joint 82 and the both sides of the string 12 of the bagged spiral spring that is positioned at formation 14 that cooperates with one another on transverse seam platform 84, as shown in Figure 1.When spring 14 advances and during by it, the fabric 16 between spring 14 is joined together, thereby finishes the single bag of each spring 14, and spring 14 is enclosed in the fabric 16 to horizontal joint-forming section 78.Should also be understood that and to adopt other to be used to form the method for transverse seam 80 within the scope of the invention, for example sew up, bookbinding etc.Time marquis forming transverse seam 80 need gather together fabric.Like this, the string 12 of bagged spiral spring 14 must be surrendered or shrink to a certain extent to adapt to joint-forming technology.This can realize with a kind of driving mechanism (for example a kind of driving delivery system) or in a kind of passive mode (for example rubbing effect between fabric 16 and conveying rotatable parts 72).It is parallel with the transverse seam 80 in the fabric 16 that the longitudinal axis 60 of spring 14 keeps substantially.But, reason owing to spring 14 stretching, extensions, the longitudinal seam 54 at free edge 28 places that is formed on fabric 16 is substantially on the side 88 of the string 12 of the top of bagged spiral spring 14 and the bagged spiral spring 14 between the bottom 90,92, specifically as illustrated in Figures 5 and 6.Aim in parallel with each other in each textile bags 86 inside by the longitudinal axis 60 that makes spring 14, thereby the present invention need not needed rotation spring 14 in textile bags 86 like that in many prior art systems.
With reference to Fig. 5 and 6, when transverse seam 80 was formed by the transverse seam section of formation 78, longitudinal seam 54 preferably became attached on the bag 86.Like this, in the zone near the fabric 16 of transverse seam 80,78 places are welded together quadruple cloth 16 at the transverse seam shaped segment.It should be understood that in addition other method fixing seam 80 by this way, even also can before entering transverse seam shaped segment 78, be set when for example longitudinal seam 54 is not on also being welded to the bag 86 with transverse seam 80.In addition, longitudinal seam 54 can be on the top and the optional position between the bottom of spring, but it is shown and approximately is positioned at its central authorities in these accompanying drawings.
The downstream of second transportation section 94 preferably includes a pair of counter-rotational delivery wheel 96, and each delivery wheel 96 has the pivot center 98 of the longitudinal axis 60 that is parallel to spring substantially.A plurality of arc grooves 100 on the circumference of delivery wheel 96 surround bagged-spring 14 together at least in part, and they are formed the section 78 from the transverse seam in downstream advance, so as to discharge and carry out subsequently packing, deposit or be processed into mattress, mat or innerspring device.
In Fig. 3 and 4, demonstrate optional embodiment of the present invention, and identify by identical label with the similar parts of those parts, and be equally applicable to the embodiment of Fig. 3 and 4 at the detailed description of those contents above-mentioned at first embodiment shown in Fig. 1 and 2.Second preferred embodiment shown in Fig. 3 and 4 comprises the top and following spring 14 of dispersing load-transfer device 102 and being wrapped at spring stretch section 70 places that is positioned at fabric 16.Conveying mechanism can bring enforcement with wheel and/or the conveying as shown in Fig. 3 and 4 as illustrated in fig. 1 and 2, and they can be arranged on the top and bottom or lateral side surfaces of spring on request.Fig. 3 and each load-transfer device 102 of 4 pass through on forward and backward roller 104,106, specifically as shown in Figure 4.In addition, the spacing distance between the load-transfer device 102 increases along downstream direction, thereby makes it possible to be controlled at the stretching, extension of the spring 14 that is arranged in fabric 16 between the load-transfer device 102.Lax and the spring 14 that stretch of this quilt is advanced forward into downstream transverse seam shaped segment 78 then, thereby transverse seam 80 can be arranged between the adjacent springs 14, to finish single textile bags 86.
Be supplementary features of the present invention shown in Fig. 7 and 8, this feature is particularly useful for making the string 12 of the bagged spiral spring 14a of the barrel shaped structure that has as shown in Figure 7.Barrel spring 14a is known in industrial circle, and has a kind of like this profile, and the diameter of the middle circle 110 of its medi-spring 14a is greater than top circle 112 and the bottom circle 114 of this spring 14a.For example, the diameter of the top of barrel spring 14a and bottom circle is approximately 1.625 inches (4.1275 centimetres), and the diameter of middle circle 110 is approximately 2.5 inches (6.35 centimetres).When barrel spring 14a was used in the string 12, near the transverse seam 80a the spring 14a was consistent with the profile 108 of spring 14a as shown in Figure 7.Profile 108 by the spring 14a in making transverse seam 80a and being contained in bag is consistent, and especially adopt spring 14a, thereby can form tighter bag with nonlinear profile, and in that to go here and there fabric 16 in 12 more loose and integral product is better.By adopting barrel spring 14a, thereby near the transverse seam 80a it has female shapes, and because transverse seam 80a is between adjacent barrel spring 14a, so seam 80a can have the female shapes towards the outside of a kind of X of a pair of formation or similar form.Be a kind of welded joint 82a that forms described transverse seam 80a that is applicable to shown in Fig. 8, wherein many contacts 116 with shown in patterned arrangement, thereby be separated by fartherly near the adjacent contact 116 of the top of welded joint 82a and bottom than those that are positioned at the centre, with consistent with the profile of adjacent barrel spring 14a.Though the transverse seam 80a among Fig. 7 is symmetrical, it will also be appreciated that other structure within the scope of the invention.And, in other words, this feature of the present invention not only can be used for barrel spring 15a, to form the tighter textile bags that more matches, but also can be used for having substantially the spring of non-linear profile, for example barrel spring and hourglass shape spring (diameter of circle is less than the diameter of top and bottom circle wherein).
From above explanation and at least one detailed description of preferred embodiment to General Principle of the present invention, those of ordinary skill in the art will be readily appreciated that, be conspicuous to various variations of the present invention.
Claims (36)
1. method that forms strings of pocketed coil springs may further comprise the steps:
Carry a collection of fabric (16), so that parallel substantially first and second tissue layer (24,26) are provided; A series of by compression springs in the axial direction are inserted between first and second tissue layer (24,26); By near (28) formation longitudinal seams (54) free edge of first and second tissue layer (24,26) described first and second tissue layer are linked together, described tissue layer also is being joined together with free edge (28) opposed edges place; Make spring (14,14a) with and its when being inserted between these layers (24,26) same orientation in fabric, partly stretch at least vertically, thereby the longitudinal axis of each spring (60) is substantially perpendicular to described longitudinal seam (54); Form transverse seam (80,80a) between the adjacent springs in fabric (14,14a), thereby each spring is wrapped in the textile bags (86), it is characterized in that, after first and second tissue layer (24,26) being linked together by formation longitudinal seam (54), allow spring (14,14a) to stretch at least in part, and transverse seam (80,80a) is formed the longitudinal axis (60) that is parallel to the described spring that stretches to small part (14,14a) substantially.
2. the method for claim 1 is characterized in that, described spring (14,14a) is allowed to stretch at least in part before forming transverse seam (80,80a).
3. the method for claim 1 is characterized in that, described spring (14,14a) is allowed to extend to the degree that is allowed by the layer (24,26) that links together along its longitudinal axis (60).
4. method as claimed in claim 3 is characterized in that, spring (14,14a) is allowed to extend to the degree that is allowed by layer (24,26) that link together along identical orientation in being inserted in layer (24,26) time.
5. the method for claim 1 is characterized in that, the longitudinal axis (60) of spring (14,14a) be oriented in whole process during keep constant substantially.
6. the method for claim 1 is characterized in that, the stretching, extension of spring (14,14a) is controlled by a pair of rotatable parts on the opposite side of the spring in the fabric (72,102).
7. method as claimed in claim 6, it is characterized in that, the turning cylinder of rotatable parts (72) is parallel to the longitudinal axis (60) of spring substantially, and each rotatable parts (72) comprise a plurality of arc grooves (76), and these fillister joints get up partly to surround each spring.
8. method as claimed in claim 6, it is characterized in that, the turning cylinder of rotatable parts is substantially perpendicular to the longitudinal axis (60) of spring, and each rotatable parts is included in the load-transfer device (102) that passes through on the roller (104,106) that separates, wherein the spacing distance between these load-transfer devices (102) increases along downstream direction, thereby has controlled the stretching, extension of spring (14,14a) between these load-transfer devices.
9. the method for claim 1, it is characterized in that, also comprise: pulling is separating on the both sides of fabric and is being positioned at fabric between a pair of rotational conveyance parts (96) of the position downstream part that forms transverse seam (80,80a), described rotational conveyance parts (96) comprise a plurality of arc grooves (100), and these grooves (100) combine partly to surround each spring.
10. method as claimed in claim 9 is characterized in that, the step of pulling fabric is carried out afterwards forming transverse seam (80,80a).
11. as the described method of the arbitrary claim in front, it is characterized in that, inserting step also is included in to insert near the transverse seam has the compression spring (14a) that is non-linear profile substantially, and the forming step of transverse seam also comprises and makes transverse seam (80a) form substantially at least a portion profile corresponding to adjacent springs (14a).
12. method as claimed in claim 11 is characterized in that, the spring that is inserted into (14a) is for barrel-shaped.
13. as each described method in the claim 1 to 10, it is characterized in that, described inserting step also comprises the barrel spring (14a) that inserts pressurized, and the forming step of transverse seam comprises that also transverse seam (80a) is formed has the shape of spill substantially near barrel spring (14a).
14. as each described method in the claim 1 to 10, it is characterized in that, but described fabric is the fabric (16) of thermal welding, and described connection and forming step are undertaken by fabric is welded together.
15. as each described method in the claim 1 to 10, it is characterized in that, carry the step of fabric to comprise fabric (16) is folded into first and second tissue layer (24,26), thereby opposed edges is coupled together by fold line (22) around longitudinal folding line (22).
16., it is characterized in that longitudinal seam (54) is arranged on the side of top in the formed strings of pocketed coil springs (12) and the spring between the bottom (14,14a) substantially as each described method in the claim 1 to 10.
17. system that is used to form strings of pocketed coil springs (12), wherein each spring (14,14a) is wrapped in the bag (86) that is formed by fabric, and this system comprises: the fabric section of providing that is used to provide parallel substantially first and second tissue layer (24,26); Spring inserts section (34), this insertions section be in axial on by compression spring (14,14a) be inserted in individually between first and second tissue layer (24,26); Be positioned at the longitudinal seam shaped segment (52) that spring inserts section (34) downstream, this longitudinal seam shaped segment links together by near first and second tissue layer of formation longitudinal seam (52) free edge (28) of first and second tissue layer with fabric, and these tissue layer also are being connected with free edge opposed edges place; Spring stretch section (70), allow spring (14,14a) along and same orientation when being inserted between these tissue layer (24,26) between first and second tissue layer (24,26), stretch at least in part, thereby the longitudinal axis of each spring (60) is substantially perpendicular to longitudinal seam (54); Transverse seam forms section (78), and it forms transverse seam (80,80a) in fabric, thus will every pair of adjacent spring (14,14a) separate, thereby each spring is wrapped in when being inserted in the textile bags (86); And transportation section (62,94), this transportation section makes fabric (16) and the spring that is mounted in it (14,14a) passes corresponding section forward, it is characterized in that, described spring stretch section is positioned at the downstream of longitudinal seam shaped segment, and transverse seam shaped segment (78) forms the horizontal line seam (80,80a) of the longitudinal axis (60) be parallel to the spring that stretches to small part substantially.
18. system as claimed in claim 17 is characterized in that, described transverse seam forms the downstream that section (78) is positioned at spring stretch section (70).
19. system as claimed in claim 17 is characterized in that, spring stretch section (70) allows spring to be stretched over the degree that is allowed by the tissue layer that links together (24,26) along its longitudinal axis (60).
20. system as claimed in claim 17 is characterized in that, spring (14,14a) allows to stretch along identical orientation when being inserted between the described tissue layer (24,26).
21. system as claimed in claim 17 is characterized in that, is consistent with inserting in the section (34) at spring in the forming process that is oriented in whole strings of pocketed coil springs (12) of the longitudinal axis (60) of spring (14,14a).
22. system as claimed in claim 17, it is characterized in that, described transportation section (62,94) also comprises a pair of rotational conveyance parts that are arranged in the both sides of fabric and are positioned at spring stretch section (70) downstream (62,94), these rotational conveyance parts (96) comprise a plurality of arc grooves (100), these fillister joints are together partly surrounding each spring (14,14a) and fabric on every side, thereby fabric and the spring that is mounted in it pass corresponding section in tow.
23., it is characterized in that spring stretch section (70) also comprises the rotatable parts (72,102) of the both sides of a pair of spring that is positioned at fabric (14,14a) as each described system in the claim 17 to 22.
24. system as claimed in claim 23, it is characterized in that, the turning cylinder of described rotatable parts (72) is parallel to the longitudinal axis (60) of spring substantially, and each rotatable parts (72) comprise a plurality of arc grooves (76), and these fillister joints are together partly to surround each spring.
25. system as claimed in claim 24, it is characterized in that, the turning cylinder of stating rotatable parts (102) is substantially perpendicular to the longitudinal axis (60) of spring, and each rotatable parts (102) are included in the rotation that separates the load-transfer device (102) that roller (104,106) passes through above are installed, wherein the spacing distance between the load-transfer device (102) increases along downstream direction, thereby has controlled the stretching, extension of spring between load-transfer device (102).
26., it is characterized in that transverse seam forms section (78) and forms the transverse seam (80a) consistent with the non-linear profile of adjacent springs (14a) as each described system in the claim 17 to 22.
27. as each described system in the claim 17 to 22, it is characterized in that, longitudinal seam forms section (52) and transverse seam formation section (78) all also comprises crew-served hot melting connector and platform (56,58,82,84), to form the thermal welding seam in fabric.
A 28. strings of pocketed coil springs (12), comprise two elongated tissue layer (24,26), they are joined together by near the longitudinal seam (54) the free edge of these tissue layer, these tissue layer (24,26) edge at relative free edge is joined together, and has transverse seam (80,80a), to form bag (86), and spring (14,14a) be wrapped in each bag, and has substantially a longitudinal axis (60) perpendicular to longitudinal seam (54), this longitudinal seam (54) is set on the side of the spring between its end, wherein the fabric between free edge of each tissue layer (28) and the longitudinal seam (54) is folded, to overlap on another, thereby form the two-layer band that contacts with bag (86), and this band is by transverse seam (80,80a) link to each other with bag (86).
29. strings of pocketed coil springs as claimed in claim 28 is characterized in that, longitudinal seam (54) is positioned at the about midway location place between the spring (14,14a).
30. as claim 28 or 29 described strings of pocketed coil springs, it is characterized in that, described fabric (16) but be thermal welding, and seam (54,80,80a) is formed by thermal welding.
31., it is characterized in that the opposite edges of these tissue layer (24,26) are in aggregates as claim 28 or 29 described strings of pocketed coil springs.
32. a method that forms strings of pocketed coil springs may further comprise the steps:
Carry a collection of fabric (16), so that parallel substantially first and second tissue layer (24,26) are provided; A series of springs (14a) by compression are inserted between first and second tissue layer (24,26); By near the free edge of first and second tissue layer (24,26), forming longitudinal seam (54) so that described first and second tissue layer are linked together; These tissue layer also are being joined together with free edge opposed edges place; Form transverse seam (80a) between the adjacent springs in fabric (14a), thereby in the time of in each spring being inserted in textile bags (86) it is wrapped in wherein, it is characterized in that, described inserting step comprises inserting to have the compression spring of non-linear shape profile (14a) substantially, and the forming step of transverse seam (80a) comprises transverse seam (80a) is formed substantially at least a portion profile corresponding to spring (14a).
33. the method as claim 32 is characterized in that, described spring (14a) is barrel-shaped, and transverse seam (80a) has the profile of spill substantially near being formed in barrel spring.
34. system that is used to form strings of pocketed coil springs (12), wherein each spring (14a) is wrapped in the bag (86) that is formed by fabric, and this system comprises: the fabric section of providing that is used to provide parallel substantially first and second tissue layer (24,26); Spring inserts section (34), inserts the section place at this, each in the axial direction by compression spring (14a) be inserted in individually between first and second tissue layer (24,26); Be positioned at the longitudinal seam shaped segment (52) that spring inserts section (34) downstream, this longitudinal seam shaped segment links together by near first and second tissue layer of formation longitudinal seam (54) free edge (28) of first and second tissue layer with fabric, and these tissue layer also are being connected with free edge opposed edges place; Spring stretch section (70) allows spring (14a) to stretch at least in part between first and second tissue layer (24,26); Transverse seam forms section (78), and it forms transverse seam (80a) in fabric, thereby with every pair of adjacent spring (14a) separately, each spring is wrapped in when being inserted in wherein in the textile bags (86) thus; And transportation section (62,94), this transportation section makes fabric (16) and the spring that is mounted in it (14,14a) passes corresponding section forward, it is characterized in that, each spring (14a) has nonlinear profile between its top and bottom, described transverse seam (80a) has the non-linear profile consistent with spring configuration.
A 35. strings of pocketed coil springs (12), comprise two elongated tissue layer that link together by near the longitudinal seam the free edge of tissue layer (54) (24,26), these tissue layer are joined together in the edge with respect to free edge, and has transverse seam (80a), to form bag (86), and spring (14a) is wrapped in each bag, it is characterized in that, each spring (14a) has nonlinear profile between its top and bottom, described transverse seam (80a) has the non-linear profile consistent with spring configuration.
36. strings of pocketed coil springs as claimed in claim 35 is characterized in that, the opposite edges of these tissue layer (24,26) are in aggregates.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29322199A | 1999-04-16 | 1999-04-16 | |
| US09/293,221 | 1999-04-16 | ||
| US09/353,483 | 1999-07-13 | ||
| US09/353,483 US6336305B1 (en) | 1999-04-16 | 1999-07-13 | System for forming strings of pocketed coil springs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1355766A CN1355766A (en) | 2002-06-26 |
| CN1251959C true CN1251959C (en) | 2006-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB008062250A Expired - Fee Related CN1251959C (en) | 1999-04-16 | 2000-03-31 | Method and system for forming strings of pocketed coil springs |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP1171377B2 (en) |
| JP (1) | JP4377074B2 (en) |
| CN (1) | CN1251959C (en) |
| AT (1) | ATE280735T1 (en) |
| AU (1) | AU3318900A (en) |
| BR (1) | BR0009482A (en) |
| CA (1) | CA2368852C (en) |
| DE (1) | DE60015318T3 (en) |
| ES (1) | ES2232431T5 (en) |
| GB (1) | GB2358796B (en) |
| MX (1) | MXPA01010382A (en) |
| PT (1) | PT1171377E (en) |
| TR (1) | TR200102879T2 (en) |
| WO (1) | WO2000063113A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6591436B2 (en) * | 1999-04-16 | 2003-07-15 | Spuhl Ag St. Gallen | Side seam pocketed coil springs |
| US6260331B1 (en) * | 1999-06-17 | 2001-07-17 | Sidhil Technology, Llc | Method and apparatus for the manufacture of pocketed springs |
| GB2358349B (en) * | 2000-10-12 | 2001-12-12 | Spuhl Ag St Gallen | Method and system for forming strings of pocketed coil springs |
| SE530089C2 (en) * | 2004-10-18 | 2008-02-26 | Stjernfjaedrar Ab | Elastic mattress, such as pocket mattress, method of manufacture of such elastic mattress and device for manufacturing such elastic mattress |
| CN101955150B (en) * | 2010-07-30 | 2012-11-14 | 严卓晟 | Bagged spring machine capable of continuously rolling |
| PL2565152T3 (en) * | 2011-08-30 | 2014-11-28 | Spuehl Ag | Device for forming a hose out of pocket material and method for producing a pocket row of springs |
| US9427090B2 (en) * | 2013-06-19 | 2016-08-30 | L&P Property Management Company | Pocketed spring assembly comprising strings of springs having Y-shaped seams |
| CN106185780A (en) * | 2016-06-28 | 2016-12-07 | 广州市联柔机械设备有限公司 | Double-layer cloth bag spring producing device and method |
| CN113840797B (en) * | 2019-05-14 | 2023-11-14 | 贝卡尔特公司 | Bagged spring spool |
| KR102134553B1 (en) * | 2020-02-13 | 2020-07-16 | 김선용 | Pocket Spring Auto Alignment Entry |
| CN112596161B (en) * | 2020-12-21 | 2023-03-24 | 成都市加朗星科技有限公司 | Multi-layer structured spot-size converter and implementation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4439977A (en) | 1977-05-05 | 1984-04-03 | Simmons U.S.A. Corporation | Method and apparatus for making a series of pocketed coil springs |
| US4234983A (en) | 1978-10-02 | 1980-11-25 | Simmons Company | Thermally welded spring pockets |
| US4584023A (en) † | 1984-10-31 | 1986-04-22 | Chevron Research Company | Method for producing industrial asphalts without air-blowing using phytic acid |
| US5613287A (en) | 1995-06-07 | 1997-03-25 | Simmons Company | Method for forming strings of pocketed springs |
| US5749133A (en) * | 1996-09-10 | 1998-05-12 | Simmons Company | Method and apparatus for forming strings of pocketed springs |
| SE9704746L (en) * | 1997-12-19 | 1998-11-09 | Stjernfjaedrar Ab | Double spring mattress and manufacturing method for such a mattress |
-
2000
- 2000-03-31 AU AU33189/00A patent/AU3318900A/en not_active Abandoned
- 2000-03-31 CN CNB008062250A patent/CN1251959C/en not_active Expired - Fee Related
- 2000-03-31 PT PT00911198T patent/PT1171377E/en unknown
- 2000-03-31 EP EP00911198A patent/EP1171377B2/en not_active Expired - Lifetime
- 2000-03-31 WO PCT/IB2000/000396 patent/WO2000063113A1/en active IP Right Grant
- 2000-03-31 JP JP2000612214A patent/JP4377074B2/en not_active Expired - Fee Related
- 2000-03-31 CA CA002368852A patent/CA2368852C/en not_active Expired - Fee Related
- 2000-03-31 DE DE60015318T patent/DE60015318T3/en not_active Expired - Lifetime
- 2000-03-31 MX MXPA01010382A patent/MXPA01010382A/en active IP Right Grant
- 2000-03-31 ES ES00911198T patent/ES2232431T5/en not_active Expired - Lifetime
- 2000-03-31 AT AT00911198T patent/ATE280735T1/en active
- 2000-03-31 GB GB0108713A patent/GB2358796B/en not_active Expired - Fee Related
- 2000-03-31 BR BR0009482-0A patent/BR0009482A/en not_active Application Discontinuation
- 2000-03-31 TR TR2001/02879T patent/TR200102879T2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB0108713D0 (en) | 2001-05-30 |
| WO2000063113A1 (en) | 2000-10-26 |
| MXPA01010382A (en) | 2002-03-27 |
| BR0009482A (en) | 2002-03-26 |
| EP1171377B1 (en) | 2004-10-27 |
| JP2002541943A (en) | 2002-12-10 |
| CA2368852A1 (en) | 2000-10-26 |
| DE60015318D1 (en) | 2004-12-02 |
| GB2358796A (en) | 2001-08-08 |
| TR200102879T2 (en) | 2002-04-22 |
| EP1171377B2 (en) | 2012-06-13 |
| DE60015318T3 (en) | 2012-11-08 |
| DE60015318T2 (en) | 2005-11-24 |
| CN1355766A (en) | 2002-06-26 |
| AU3318900A (en) | 2000-11-02 |
| ATE280735T1 (en) | 2004-11-15 |
| CA2368852C (en) | 2008-12-16 |
| EP1171377A1 (en) | 2002-01-16 |
| ES2232431T5 (en) | 2012-10-22 |
| PT1171377E (en) | 2005-04-29 |
| ES2232431T3 (en) | 2005-06-01 |
| JP4377074B2 (en) | 2009-12-02 |
| GB2358796B (en) | 2001-12-12 |
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