Folding machine for underpants and electrical control method thereof
Technical Field
The invention relates to the technical field of clothing processing, in particular to a folding machine for underpants and an electrical control method thereof.
Background
After the underpants are processed, the underpants need to be folded in order according to a specified shape and packaged so as to flow out of the production line. The disposable underpants are thin and soft, the existing folding machine cannot be folded out according to the requirement, the operation is slower, the damage to the disposable underpants is avoided, the working efficiency is low, and therefore the purpose of rapid folding is achieved by the folding machine designed for the disposable underpants, which is required by a person skilled in the art.
Disclosure of Invention
In order to solve the problems, the invention provides the following technical scheme:
the present invention provides a folding machine for underpants, comprising:
the manual feeding station is provided with a first placement component, and a first in-place detection device is arranged on the first placement component and used for detecting whether manual feeding is successful or not;
the first folding station is used for folding the single side of the underpants, a first single side folding component, a second placing component and a first pressing component are arranged on the first folding station, the second placing component and the first pressing component are arranged up and down correspondingly, and the first single side folding component is arranged on one side of the second placing component; the first pressing component is provided with a second in-place detection device which is used for detecting whether materials in the manual feeding station are conveyed in place or not;
the second folding station is used for continuously folding the single side of the underpants, the second folding station is provided with a second single side folding component, a third placing component and a second pressing component, the third placing component and the second pressing component are arranged up and down correspondingly, and the second single side folding component is arranged on one side of the third placing component; a third in-place detection device is arranged on the second pressing component and is used for detecting whether the materials in the first folding station are conveyed in place or not;
the first buffer station is used for conveying and buffering materials; a fourth in-place detection device is arranged in the first buffer station and is used for detecting whether materials exist in the third folding station or not;
the third folding station is used for folding the double-sided edges of underpants, a first double-sided edge folding assembly, a fourth placing assembly, a first pressing rod assembly and a second pressing rod assembly are arranged on the third folding station, the first pressing rod assembly is arranged at the middle part relative to the first double-sided edge folding assembly, and the second pressing rod assembly is arranged at the middle part relative to the first pressing rod assembly; a fifth in-place detection device is arranged on the fourth placement component and is used for detecting whether the materials in the second folding station are conveyed in place or not;
the second buffer station is used for conveying and buffering materials; a sixth in-place detection device is arranged in the second buffer station and is used for detecting whether materials exist in the fourth folding station or not;
the second folding station is used for continuously folding the double-sided edges of the underpants, a second double-sided folding assembly, a fifth placing assembly, a third pressing rod assembly and a fourth pressing rod assembly are arranged on the fourth folding station, the third pressing assembly is arranged at the middle part relative to the second double-sided folding assembly, and the fourth pressing rod assembly is arranged at the middle part relative to the third pressing rod assembly; a seventh in-place detection device is arranged on the fifth placement component and is used for detecting whether the materials in the third folding station are conveyed in place or not;
the third buffer station is used for conveying and buffering materials; an eighth in-place detection device is arranged in the third buffer station and is used for detecting whether materials exist in the overturning station or not;
the overturning station is used for stably overturning and pressing the folded underpants, a sixth placing component, a first overturning component and a third pressing component are arranged on the overturning station, and the sixth placing component and the first overturning component are placed in a staggered mode; and a ninth in-place detection device is arranged on the third pressing component and is used for detecting whether the materials in the fourth folding station are conveyed in place or not.
Further, the manual feeding station, the first folding station, the second folding station, the first caching station, the third folding station, the second caching station, the fourth folding station, the third caching station and the overturning station are sequentially provided with conveying units, the conveying units are used for conveying materials, each conveying unit comprises a conveying piece, a driving device, belt wheels and rotating shafts which are correspondingly arranged, the belt wheels are arranged on the rotating shafts in a plurality of arrays, the conveying pieces are placed on the symmetrically arranged belt wheels, and the rotating shafts are driven by the driving devices to drive the conveying pieces to move; the adjacent stations share the same rotating shaft;
the conveying unit in the manual feeding station is not provided with a driving device.
Preferably, the upper parts of the conveying members in the third folding station and the fourth folding station are obliquely arranged, so that interference between materials and equipment is avoided, the complexity of the equipment is reduced, and the first double-side folding assembly and the second double-side folding assembly do not need to be lifted.
Preferably, the conveying member may be a conveying belt, a timing belt, a belt, or the like, which can be used for conveying.
Preferably, the driving device is a motor and reduction gear assembly, and the reduction gear assembly adopts the prior art, and the first driving device only provides power, and is not the protection content of the scheme, and will not be described in detail.
Further, the first placing component, the second placing component, the third placing component, the fourth placing component, the fifth placing component and the sixth placing component all comprise a first driving piece and a placing plate, and the placing plate moves between the upper part and the lower part of the conveying piece under the action of the first driving piece;
the placing plate is provided with a plurality of grooves, the grooves are arranged side by side, and the conveying parts are normally conveyed in the grooves when the corresponding placing components are lifted.
Preferably, the corresponding placement component further comprises a first base plate and a first supporting frame, the placement plate and the first base plate are respectively arranged on two sides of the first supporting frame, and under the action of the first driving piece, the first supporting frame penetrates through the lower conveying piece to drive the placement plate to move between the upper portion and the lower portion of the conveying piece.
Further, the first single-side folding assembly and the second single-side folding assembly comprise a second driving piece, a rotating rod and a plurality of folding rods arranged on the rotating rod in an array manner; the folding rod can drive the rotating rod to rotate through the second driving piece; the folding bars are disposed between pulleys disposed in an array.
Further, the first pressing component, the second pressing component and the third pressing component all comprise a third driving piece and an upper pressing plate or pressing block, and the upper pressing plate or the pressing block moves up and down under the action of the third driving piece; the two side edges of the upper pressing plate are provided with upper flanging.
Further, the first double-side folding component and the second double-side folding component comprise a telescopic mechanism, a fixed plate and second overturning components arranged at two ends of the fixed plate, the second overturning components are used for overturning the double sides of the clothes, and the telescopic mechanism is used for driving the second overturning components to stretch back and forth;
the second overturning assembly comprises a rotary cylinder, a rotary shaft flange, a rotary block and an overturning rod arranged on the rotary block, the rotary block is L-shaped, the L-shaped short side of the rotary block is connected with the rotary shaft flange, and the overturning rod is arranged on the L-shaped long side of the rotary block;
the length of the turning rod is gradually increased from the close to the L-shaped short side far from the rotating block.
Further, the first compression bar assembly and the third compression bar assembly comprise a fourth driving piece, a first compression bar plate and first compression bars arranged at two ends of the first compression bar plate, the fourth driving piece is connected with the first compression bar plate, and the length of the first compression bar arranged from the inner side to the outer side of the first compression bar plate is gradually decreased.
Further, the second compression bar assembly and the fourth compression bar assembly comprise a fifth driving piece, a second compression bar plate and a second compression bar arranged on the second compression bar plate, and the fifth driving piece is connected with the second compression bar plate.
Further, a photoelectric device is arranged at the driving device in the first folding station and used for controlling the driving device in the first folding station to start through manual intervention.
The invention also provides an electrical control method for a panty folder, the electrical control method comprising:
and (3) manual feeding: pressing a start button, manually placing materials on a first placing component, triggering the first placing component to move downwards when a first in-place detection device detects the materials, moving a placing plate of the first placing component between the upper part and the lower part of a conveying piece, then manually intervening to shield a photoelectric device, triggering a driving device in a first folding station to start, and driving the conveying piece in the first folding station to move;
folding for the first time: when the second in-place detection device detects a material, the first driving piece of the second placement component is triggered to drive the placement plate to move to the bottom of the material, meanwhile, the second driving piece of the first unilateral folding component drives the folding rod to rotate, the unilateral of the material is turned over and folded, and then the first pressing component moves downwards to press the folded material; when the first pressing component moves upwards, a driving device in the second folding station is triggered to start, and a conveying piece in the second folding station is driven to move;
folding for the second time: when the third in-place detection device detects a material, the first driving piece of the third placement component is triggered to drive the placement plate to move to the bottom of the material, meanwhile, the second driving piece of the second unilateral folding component drives the folding rod to rotate, unilateral overturning and folding of the material are continued, and then the second pressing component moves downwards to press the folded material; when the second pressing component moves upwards, a driving device in the first caching station is triggered to start, and a conveying piece in the first caching station is driven to move;
first time caching: when the fourth in-place detection device detects that the third folding station is provided with the material, triggering a driving device in the first buffer station to stop moving, and stopping the material from continuously conveying the material to the third folding station;
third folding: when the fifth in-place detection device detects that a material exists, a driving device in the third folding station is triggered to stop moving, and meanwhile, the first compression bar assembly moves downwards to press the material; the telescopic mechanism of the first double-side folding assembly drives the second overturning assembly connected with the telescopic mechanism to extend to the lower part of the material, the rotary cylinder of the second overturning assembly connected with the telescopic mechanism rotates to overturn the two sides of the material through the overturning rod, then the fourth placing assembly moves upwards, and the second compression bar assembly moves downwards; when the first compression bar component moves upwards, a driving device in the third folding station is triggered to start, and a conveying piece of the third folding station is driven to move;
second time buffering: when the sixth in-place detection device detects that the fourth folding station is provided with the material, triggering a driving device in the second buffer station to stop moving, and stopping the material from continuously conveying the material to the fourth folding station;
fourth folding: when the seventh in-place detection device detects the material, triggering a driving device in the fourth folding station to stop moving, and simultaneously, enabling the third compression bar assembly to move downwards to press the material; the telescopic mechanism of the second double-side folding assembly drives the second overturning assembly connected with the telescopic mechanism to extend to the lower part of the material, the rotary cylinder of the second overturning assembly connected with the telescopic mechanism rotates to overturn two side edges of the material through the overturning rod, then the fifth placing assembly moves upwards, and the fourth compression bar assembly moves downwards; when the third compression bar component moves upwards, a driving device in the fourth folding station is triggered to start, and a conveying piece of the fourth folding station is driven to move;
third time buffering: when the eighth in-place detection device detects that the material exists at the overturning station, triggering a driving device in the third buffer station to stop moving, and stopping the material from continuously conveying the material to the overturning station;
and (3) turning over to complete folding: when the ninth in-place detection device detects the material, the driving device in the overturning station is triggered to stop moving, the first overturning assembly overturns the material to the sixth placing assembly, and meanwhile, the third pressing assembly is triggered to move downwards to integrally press the folded material, so that folding is completed.
The invention has the following beneficial effects:
(1) The folding rods are arranged between the pulleys arranged in the array, so that the space is not occupied, and the occupied area of the whole folding device is saved;
(2) The conveying unit consists of a plurality of conveying components, and can automatically control the starting time of the conveying components according to the operation time of different stations;
(3) The upper parts of the conveying pieces in the third folding station and the fourth folding station are obliquely arranged, so that interference between materials and equipment is avoided, the complexity of the equipment is reduced, and the first double-side folding assembly and the second double-side folding assembly do not need to be lifted;
(4) The folding type underpants can be folded for multiple times, and the underpants with different sizes can be folded by arranging the turning rods with different lengths, so that the folding type underpants have good adjustability and applicability.
(5) The invention has high conveying speed and can realize one piece of 3 s.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic illustration of the internal connections of the present invention.
FIG. 3 is a schematic view of the placement of components within a third folding station of the present invention.
Fig. 4 is a schematic diagram of a transfer unit of the present invention.
Fig. 5 is a schematic view of a first placement component of the present invention.
Fig. 6 is a schematic illustration of the placement of a first single sided folding assembly of the present invention.
Fig. 7 is a schematic view of a first single sided folding assembly of the present invention.
FIG. 8 is a schematic view of a first hold-down assembly of the present invention.
FIG. 9 is a schematic view of a first double sided folding assembly of the present invention.
FIG. 10 is a schematic view of a first plunger assembly of the present invention.
FIG. 11 is a schematic view of a second plunger assembly of the present invention.
Detailed Description
The following detailed description of the embodiments of the invention, taken in conjunction with the accompanying drawings, should be taken as illustrative of the invention only and not as limiting, the examples being intended to provide those skilled in the art with a better understanding and reproduction of the technical solutions of the invention, the scope of the invention still being defined by the claims.
As shown in fig. 1-2, the present invention provides a folder for underpants comprising:
the manual feeding station 1 is provided with a first placing component 11, and a first in-place detection device (shielding not shown) is arranged on the first placing component 11 and used for detecting whether manual feeding is successful or not;
the first folding station 2 is used for unilaterally folding underpants, a first unilateral folding component 21, a second placing component 22 and a first pressing component 23 are arranged on the first folding station 2, the second placing component 22 and the first pressing component 23 are correspondingly arranged up and down, and the first unilateral folding component 21 is arranged on one side of the second placing component 22; a second in-place detection device (shielding is not shown) is arranged on the first pressing component 23 and is used for detecting whether the materials in the manual feeding station 1 are conveyed in place or not;
the second folding station 3 is used for continuously folding the single side of the underpants, the second folding station 3 is provided with a second single side folding component 31, a third placing component 32 and a second pressing component 33, the third placing component 32 and the second pressing component 33 are arranged up and down correspondingly, and the second single side folding component 31 is arranged at one side of the third placing component 32; a third in-place detecting device (shielding not shown) is arranged on the second pressing component 33 and is used for detecting whether the materials in the first folding station 2 are conveyed in place or not;
the first buffer station 4 is used for conveying and buffering materials; a fourth in-place detection device 41 is arranged in the first buffer station 4 and is used for detecting whether materials exist in the third folding station 5;
as shown in fig. 3, a third folding station 5 is used for folding the two sides of the underpants, a first two-side folding component 51, a fourth placing component 52, a first pressing rod component 53 and a second pressing rod component 54 are arranged on the third folding station 5, the first pressing rod component 53 is arranged at the middle part relative to the first two-side folding component 51, and the second pressing rod component 54 is arranged at the middle part relative to the first pressing rod component 53; a fifth in-place detecting device (shielding not shown) is arranged on the fourth placing component 52 and is used for detecting whether the materials in the second folding station 3 are conveyed in place or not;
the second buffer station 6 is used for conveying and buffering materials; a sixth in-place detection device 61 is arranged in the second buffer station 6 and is used for detecting whether materials exist in the fourth folding station 7;
a fourth folding station 7 for continuing folding the two sides of the underpants, wherein a second two-side folding component 71, a fifth placing component 72, a third pressing component 73 and a fourth pressing component 74 are arranged on the fourth folding station 7, the third pressing component 73 is arranged at the middle part relative to the second two-side folding component 71, and the fourth pressing component 74 is arranged at the middle part relative to the third pressing component 73; a seventh in-place detection device (shielding not shown) is arranged on the fifth placement component 72, and is used for detecting whether the materials in the third folding station 5 are conveyed in place or not;
the third buffer station 8 is used for conveying and buffering materials; an eighth in-place detection device 81 is arranged in the third buffer station 8 and is used for detecting whether materials exist in the overturning station 9;
the overturning station 9 is used for overturning and pressing the folded underpants stably, a sixth placing component 91, a first overturning component 92 and a third pressing component 93 are arranged on the overturning station 9, and the sixth placing component 91 and the first overturning component 92 are placed in a staggered mode; a ninth in-place detecting device (shielding not shown) is arranged on the third pressing component 93, and is used for detecting whether the materials in the fourth folding station 7 are conveyed in place or not.
As shown in fig. 4, the manual feeding station 1, the first folding station 2, the second folding station 3, the first buffer station 4, the third folding station 5, the second buffer station 6, the fourth buffer station 7, the third buffer station 8 and the turnover station 9 are sequentially provided with a conveying unit 10 for conveying materials, the conveying unit 10 comprises conveying members 101, a driving device 102, belt pulleys 103 and rotating shafts 104 which are correspondingly arranged, the belt pulleys 103 are arranged on the rotating shafts 104 in a plurality of arrays, the conveying members 101 are placed on the symmetrically arranged belt pulleys 103, and the rotating shafts 104 are driven by the driving device 102 to drive the conveying members 101 to move; and the adjacent stations share the same rotating shaft 104;
the transfer unit 10 in the manual feeding station 1 is not provided with a drive 102.
Preferably, the upper parts of the conveying members in the third folding station and the fourth folding station are obliquely arranged, so that the interference between materials and equipment is avoided, the complexity of the equipment is reduced, and the first double-side folding assembly and the second double-side folding assembly do not need to be lifted
Preferably, the driving device 102 is externally provided with a housing 1020.
Preferably, the drive 102 is a motor and reduction gear assembly of the prior art, and the first drive is merely powered and not a matter of protection of the present solution and will not be described in detail.
As shown in fig. 5, the first placing component 11, the second placing component 22, the third placing component 32, the fourth placing component 52, the fifth placing component 72 and the sixth placing component 91 each comprise a first driving member 111 and a placing plate 112, and the placing plate 112 moves between the upper portion and the lower portion of the conveying member 101 under the action of the first driving member 111;
as shown in fig. 6, the placement plate 112 is provided with a plurality of grooves 1121, the grooves 1121 are arranged side by side, and the grooves 1121 are used for normally conveying the conveying members 101 in the grooves 1121 when the corresponding placement assembly is lifted.
Preferably, the corresponding placement component further includes a first pad 113 and a first supporting frame 114, where the placement board 112 and the first pad 113 are respectively disposed on two sides of the first supporting frame 114, and under the action of the first driving member 111, the first supporting frame 114 passes through the lower conveying member to drive the placement board 112 to move between the upper portion and the lower portion of the conveying member.
As shown in fig. 7, each of the first single-side folding assembly 21 and the second single-side folding assembly 31 includes a second driving member 211, a rotating rod 212, and a plurality of folding rods 213 arranged in an array on the rotating rod 212; the folding bar 213 can drive the rotation bar 212 to rotate by the second driving part 211; the folding bar 212 is arranged between the pulleys 103 arranged in an array.
As shown in fig. 8, the first pressing assembly 23, the second pressing assembly 33 and the third pressing assembly 93 each include a third driving member 231 and an upper pressing plate 232 or a pressing block, and the upper pressing plate 232 or the pressing block moves up and down under the action of the third driving member 231; the upper platen 232 has upper flanges 2321 on both sides.
As shown in fig. 9, the first double-sided folding assembly 51 and the second double-sided folding assembly 71 each include a telescopic mechanism 511, a fixing plate 512, and second overturning assemblies 513 disposed at two ends of the fixing plate 512, wherein the second overturning assemblies 513 are used for overturning the double sides of the clothes, and the telescopic mechanism 511 is used for driving the second overturning assemblies 513 to retract back and forth;
the second overturning assembly 513 includes a rotary cylinder 5131, a rotary shaft flange 5132, a rotary block 5133, and an overturning rod 5134 disposed on the rotary block 5133, wherein the rotary block 5133 is L-shaped, the L-shaped short side of the rotary block is connected with the rotary shaft flange, and the L-shaped long side of the rotary block is provided with the overturning rod 5134;
the length of the turning rod is gradually increased from the close to the L-shaped short side far from the rotating block.
Preferably, the second flipping assembly 513 is similar to the first flipping assembly in structure, and the main difference is that the length of the flipping rods is not uniform, and the length of the flipping rods of the second flipping assembly 513 is shorter than that of the flipping rods of the first flipping assembly.
As shown in fig. 10, the first compression bar assembly 53 and the third compression bar assembly 73 include a fourth driving member 531, a first compression bar plate 532, and a first compression bar 533 disposed at two ends of the first compression bar plate 532, where the fourth driving member 531 is connected to the first compression bar plate 532, and the length of the first compression bar 533 disposed from the inner side to the outer side of the first compression bar plate 532 decreases sequentially.
As shown in fig. 11, the second and fourth presser bar assemblies 54 and 74 include a fifth driving member 541, a second presser bar plate 542, and a second presser bar 543 disposed on the second presser bar plate 542, and the fifth driving member 541 is connected to the second presser bar plate 542.
In some preferred embodiments, the electro-optical device 100 is disposed at the driving device (the first driving device 102-2) in the first folding station, so as to control the driving device (the first driving device 102-2) in the first folding station to be started by manual intervention.
Preferably, the first driving member, the third driving member, the fourth driving member and the fifth driving member may be telescopic cylinders; the second driving member may be a reversing cylinder.
As shown in fig. 1, the underpants folding machine is further provided with a start button 1001, an electric cabinet, an alarm device 1003 and a man-machine interaction screen 1004.
The invention also provides an electrical control method for a panty folder, the electrical control method comprising:
and (3) manual feeding: pressing a start button 1001 to manually place a material on the first placement component 11, triggering the first placement component 11 to move downwards when a first in-place detection device (shielding not shown) detects the material, moving a placement plate of the first placement component 11 between the upper part and the lower part of a conveying member (a first conveying member 101-1) in a manual feeding station, then manually intervening a shielding photoelectric device 100, triggering a driving device (a first driving device 102-2) in a first folding station to start, and driving a conveying member (a second conveying member 101-2) in the first folding station to move;
folding for the first time: when the second in-place detection device (shielding not shown) detects a material, the first driving piece of the second placement component 22 is triggered to drive the placement plate to move to the bottom of the material, meanwhile, the second driving piece of the first unilateral folding component 21 drives the folding rod to rotate, the unilateral of the material is turned over and folded, and then the first pressing component 23 moves downwards to press the folded material; when the first pressing component 23 moves upwards, a driving device (a second driving device 102-3) in the second folding station is triggered to start, so that a conveying piece (a third conveying piece 101-3) in the second folding station is driven to move;
folding for the second time: when the third in-place detection device (shielding not shown) detects the material, the first driving piece of the third placement component 32 is triggered to drive the placement plate to move to the bottom of the material, meanwhile, the second driving piece of the second unilateral folding component 31 drives the folding rod to rotate, the unilateral overturning and folding of the material are continued, and then the second pressing component 33 moves downwards to press the folded material; when the second pressing component 33 moves upwards, triggering the driving device (the third driving device 102-4) in the first buffer station to start, and driving the conveying member (the fourth conveying member 101-4) in the first buffer station to move;
first time caching: when the fourth in-place detection device 41 detects that the third folding station 5 is provided with the material, triggering the driving device (the third driving device 102-4) in the first buffer station to stop moving, and stopping the material from continuously conveying the material to the third folding station 5;
third folding: when the fifth in-place detection device (shielding not shown) detects that the material exists, triggering the driving device (the fourth driving device 102-5) in the third folding station to stop moving, and simultaneously enabling the first compression bar assembly 53 to move downwards to press the material; the telescopic mechanism of the first double-side folding assembly 51 drives the second overturning assembly connected with the telescopic mechanism to extend below the material, the rotary cylinder of the second overturning assembly connected with the telescopic mechanism rotates to overturn the two sides of the material through the overturning rod, then the fourth placing assembly 52 moves upwards, and the second compression bar assembly 54 moves downwards; when the first compression bar assembly 53 moves upwards, a driving device (a fourth driving device 102-5) in the third folding station is triggered to start, and a conveying piece (a fifth conveying piece 101-5) of the third folding station is driven to move;
second time buffering: when the sixth in-place detection device 61 detects that the fourth folding station 7 is provided with the material, triggering a driving device (a fifth driving device 102-6) in the second buffer station to stop moving, and stopping the material from continuously conveying the material to the fourth folding station 7;
fourth folding: when the seventh in-place detection device (shielding not shown) detects the material, triggering the driving device (the sixth driving device 102-7) in the fourth folding station to stop moving, and simultaneously, enabling the third compression bar assembly 73 to move downwards to press the material; the telescopic mechanism of the second double-side folding assembly 71 drives the second overturning assembly connected with the telescopic mechanism to extend below the material, the rotary cylinder of the second overturning assembly connected with the telescopic mechanism rotates to overturn two side edges of the material through the overturning rod, then the fifth placing assembly 72 moves upwards, and the fourth pressing rod assembly 74 moves downwards; when the third compression bar assembly 73 moves upwards, a driving device (a sixth driving device 102-7) in the fourth folding station is triggered to start, and a conveying piece (a seventh conveying piece 101-7) of the fourth folding station is driven to move;
third time buffering: when the eighth in-place detection device 81 detects that the material is at the overturning station 9, triggering a driving device (a seventh driving device 102-8) in the third buffer station to stop moving, and stopping the material from continuously conveying the material to the overturning station 9;
and (3) turning over to complete folding: when the ninth in-place detection device (shielding is not shown) detects the material, the driving device (eighth driving device 102-9) in the overturning station is triggered to stop moving, the first overturning assembly overturns the material onto the sixth placing assembly 91, and meanwhile, the third pressing assembly 93 is triggered to move downwards to integrally press the folded material, so that folding is completed.
The reference numerals in this case explain that a-b represent the component a in the station b, e.g. 102-9 represent the drive 102 in the flipping station 9.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.