阅读说明：本技术 基于汽车玻璃框架的整形工装 (Shaping tool based on automobile glass frame ) 是由 吴英华 张晋 顾坤 李捷 成荣新 姜妮娜 吴超峰 于 2021-07-14 设计创作，主要内容包括：本发明提供基于汽车玻璃框架的整形工装,涉及汽车配件加工技术领域,以解决现有的汽车玻璃框架的整形工装在使用时,由于汽车玻璃型号多样,汽车玻璃框架与整形夹具尺寸匹配有偏差,很难满足不同型号的汽车玻璃框架的稳定夹持,而且气缸的安装结构复杂,对气缸进行更换过程较为麻烦,同时气缸的推压角度不易调节,缺少合理的定位控制结构的问题,包括工作台；所述工作台顶部中间位置设有两处支撑架,且两处支撑架呈左右对称方式分布,并且右侧支撑架上设有四伺服电机。本发明中调节架与安装架呈锁紧状态时,滑动环通过限位条与限位槽滑动连接,且棘齿爪卡接于棘齿套内,对转杆进行定位,从而确定气缸的推压角度,其结构简单,使用操作便捷。(The invention provides a shaping tool based on an automobile glass frame, which relates to the technical field of automobile part processing and aims to solve the problems that when the existing shaping tool of the automobile glass frame is used, because the types of automobile glass are various, the size matching of the automobile glass frame and a shaping clamp has deviation, the stable clamping of the automobile glass frames with different types is difficult to meet, the installation structure of an air cylinder is complex, the replacement process of the air cylinder is troublesome, meanwhile, the pushing angle of the air cylinder is difficult to adjust, and a reasonable positioning control structure is lacked; two supporting frames are arranged in the middle of the top of the workbench and distributed in a bilateral symmetry mode, and four servo motors are arranged on the supporting frame on the right side. When the adjusting frame and the mounting frame are in a locking state, the sliding ring is in sliding connection with the limiting groove through the limiting strip, the ratchet claw is clamped in the ratchet sleeve, and the rotating rod is positioned, so that the pushing angle of the air cylinder is determined.)

1. Shaping frock based on car glass frame, its characterized in that: the shaping tool based on the automobile glass frame comprises a workbench;

two support frames are arranged in the middle of the top of the workbench, the two support frames are distributed in a bilateral symmetry mode, and four servo motors are arranged on the right support frame;

two adjusting clamp plates are arranged on the two supporting frames, and positioning frames are arranged on the front adjusting clamp plates;

the mounting frame is arranged at the position, close to the front side, of the top of the workbench, the first pressing clamps are arranged at the left side and the right side of the top of the workbench, the second pressing clamps are arranged at the position, close to the rear side, of the top of the workbench, and the second pressing clamps and the mounting frame are distributed in a front-back symmetrical mode;

be equipped with the alignment jig on the mounting bracket, and the alignment jig top is equipped with the cylinder to alignment jig one side is equipped with locating component.

2. The shaping tool based on the automobile glass frame of claim 1, wherein the support frame comprises a fixing plate, a mounting plate and first sliding grooves, the fixing plate is fixedly connected with the workbench through bolts, the mounting plate is fixedly mounted at the top end of the fixing plate, the mounting plate is vertically distributed, two first sliding grooves are formed in one side of the mounting plate, the two first sliding grooves are distributed in a parallel mode, and the first sliding grooves are of a T-shaped groove structure.

3. The automotive glass frame based shaping tool according to claim 1, wherein the adjusting clamp plate comprises a rack and a first sliding block, the rack is arranged on one side of the adjusting clamp plate and forms an L-shaped structure with the adjusting clamp plate, the first sliding block is arranged on one side of the rack, and the rack is connected with the first sliding groove in a sliding mode through the first sliding block.

4. The shaping tool based on the automobile glass frame of claim 1, wherein the servo motor comprises a shaft rod and a gear, the servo motor is fixedly connected with the right supporting frame through a bolt, the shaft rod is installed on a rotating shaft of the servo motor and is rotatably connected with the two supporting frames through bearings, two gears are arranged on the shaft rod, the gear corresponds to the rack in position, and the gear is meshed with the rack.

5. The shaping tool based on the automobile glass frame is characterized in that the positioning frame comprises a positioning round rod, a baffle and an extension spring, a groove is formed in the position, close to the top, of the positioning frame, the positioning round rod is arranged at the position, close to the groove, of the positioning frame, the baffle is arranged at the bottom end of the positioning round rod, the extension spring is connected between the baffle and the top wall of the groove of the positioning frame, and the extension spring is sleeved on the positioning round rod.

6. The automotive glass frame based shaping tool according to claim 1, wherein the mounting frame comprises ratchet sleeves, shaft sleeves are arranged on vertical plates of the mounting frame, and the ratchet sleeves are arranged in the shaft sleeves.

7. The shaping tool based on the automobile glass frame of claim 1, wherein the adjusting frame comprises mounting grooves, a rotating rod and a limiting groove, the adjusting frame is of a T-shaped structure, two mounting grooves are formed in the top of a transverse plate of the adjusting frame, the rotating rod is arranged on one side of a vertical plate of the adjusting frame and is rotatably connected with the mounting frame through a shaft sleeve, the limiting groove is formed in the rotating rod and is of a rectangular through groove structure, and the limiting groove corresponds to the positioning component.

8. The shaping tool based on the automobile glass frame of claim 1, wherein the cylinder comprises a mounting sleeve, a bottom plate and limiting clamping blocks, the mounting sleeve is sleeved on the cylinder and fixedly connected with the bottom plate, the bottom plate is provided with four limiting clamping blocks, the four limiting clamping blocks are distributed in a rectangular array mode, and the bottom plate is slidably connected with the mounting groove through the limiting clamping blocks and is controlled through a locking nut.

9. The vehicle window frame-based reforming tool as defined in claim 7, wherein the positioning assembly comprises a fixing sleeve, a sliding ring and a compression spring, the fixing sleeve is fixedly sleeved on the end of the rotating rod, the sliding ring is arranged on one side of the fixing sleeve and is slidably sleeved on the rotating rod, and the compression spring is arranged between the sliding ring and the fixing sleeve.

10. The automotive glass frame based reshaping tool as claimed in claim 9, wherein the sliding ring comprises a ratchet pawl and a limiting strip, the ratchet pawl is arranged on one side of the sliding ring and matched with the ratchet sleeve, the limiting strip is arranged on the sliding ring and slidably penetrates through the limiting groove, when the adjusting frame and the mounting frame are in a locking state, the sliding ring is slidably connected with the limiting groove through the limiting strip, and the ratchet pawl is clamped in the ratchet sleeve.

Technical Field

The invention belongs to the technical field of automobile part processing, and particularly relates to a shaping tool based on an automobile glass frame.

Background

During the installation and use of the automobile glass, the glass frame and the glass cannot be matched due to the deformation of the automobile body. Therefore, the automobile glass frame needs to be shaped in the assembling process, and the airtightness of the automobile is guaranteed.

For example, application No.: the invention of CN202011566929.2 discloses a shaping tool for an automobile glass frame, which belongs to the technical field of automobile part processing and comprises: the base, the glass frame, a plurality of tilting mechanism, a plurality of plastic mechanism, a plurality of servo motor and two push away tight mechanism, the glass frame sets up the top at the base, each tilting mechanism all sets up on the base, and each tilting mechanism can dismantle with the both sides of glass frame respectively and be connected, each plastic mechanism all sets up on the base, and each plastic mechanism compresses tightly the cooperation with the side of glass frame respectively, each servo motor is connected with each plastic mechanism transmission respectively, each bottom surface that pushes away tight mechanism respectively with base sliding connection, each one end that pushes away tight mechanism compresses tightly the cooperation with the both ends of glass frame respectively. The invention has the advantages of compact structure, simple operation, higher automation degree, controllable shaping process and higher accuracy, and improves the product percent of pass.

The plastic frock of current car glass frame when using, because the car glass model is various, car glass frame has the deviation with plastic anchor clamps size matching, hardly satisfies the stable centre gripping of the car glass frame of different models, and the mounting structure of cylinder is complicated moreover, and it is comparatively troublesome to change the process to the cylinder, and the angle that bulldozes of cylinder is difficult for adjusting simultaneously, lacks reasonable positioning control structure.

Disclosure of Invention

In order to solve the technical problems, the invention provides a shaping tool based on an automobile glass frame, and aims to solve the problems that when the existing shaping tool of the automobile glass frame is used, because the types of automobile glass are various, the sizes of the automobile glass frame and a shaping clamp are matched to have deviation, stable clamping of the automobile glass frames of different types is difficult to meet, the installation structure of an air cylinder is complex, the replacement process of the air cylinder is troublesome, meanwhile, the pushing and pressing angle of the air cylinder is difficult to adjust, and a reasonable positioning control structure is lacked.

The invention is based on the purpose and the effect of the shaping tool of the automobile glass frame, and is achieved by the following specific technical means:

the shaping tool based on the automobile glass frame comprises a workbench; two support frames are arranged in the middle of the top of the workbench, the two support frames are distributed in a bilateral symmetry mode, and four servo motors are arranged on the right support frame; two adjusting clamp plates are arranged on the two supporting frames, and positioning frames are arranged on the front adjusting clamp plates; the mounting frame is arranged at the position, close to the front side, of the top of the workbench, the first pressing clamps are arranged at the left side and the right side of the top of the workbench, the second pressing clamps are arranged at the position, close to the rear side, of the top of the workbench, and the second pressing clamps and the mounting frame are distributed in a front-back symmetrical mode; be equipped with the alignment jig on the mounting bracket, and the alignment jig top is equipped with the cylinder to alignment jig one side is equipped with locating component.

Further, the support frame includes fixed plate, mounting panel and first spout, and the fixed plate passes through bolt and workstation fixed connection, and fixed plate top fixed mounting has the mounting panel, and the mounting panel is vertical mode and distributes, and two first spouts have been seted up to mounting panel one side, and two first spouts are parallel mode and distribute to first spout is T type groove structure.

Further, adjust splint and include rack and first slider, adjust splint one side and be equipped with the rack, and the rack forms L type structure with adjusting splint, and rack one side is equipped with first slider, and the rack passes through first slider and first spout sliding connection.

Further, servo motor includes axostylus axostyle and gear, and servo motor passes through bolt and right side support frame fixed connection, and installs the axostylus axostyle in servo motor's the pivot, and the axostylus axostyle passes through the bearing to be connected with two support frame rotations, and is equipped with two gears on the axostylus axostyle, and the gear is corresponding with the rack position, and the gear is connected with the meshing of rack.

Further, the locating rack comprises a locating round rod, a baffle and an extension spring, a groove is formed in the position, close to the top, of the locating rack, the locating round rod is arranged at the groove of the locating rack, the baffle is arranged at the bottom end of the locating round rod, the extension spring is connected between the baffle and the top wall of the groove of the locating rack, and the extension spring is sleeved on the locating round rod.

Further, the mounting bracket comprises a ratchet sleeve, a shaft sleeve is arranged on a vertical plate of the mounting bracket, and the ratchet sleeve is arranged in the shaft sleeve.

Further, the alignment jig includes mounting groove, bull stick and spacing groove, and the alignment jig is T type structure, and the diaphragm top of alignment jig has seted up two mounting grooves, and riser one side of alignment jig is equipped with the bull stick, and the bull stick passes through the axle sleeve and is connected with the mounting bracket rotation, has seted up the spacing groove on the bull stick, and the spacing groove is the logical groove structure of rectangle to the spacing groove is corresponding with locating component.

Further, the cylinder includes installation cover, bottom plate and spacing fixture block, and the cover is equipped with the installation cover on the cylinder, and installation cover and bottom plate fixed connection, and the bottom plate is equipped with the spacing fixture block in four places, and the spacing fixture block in four places is rectangle array mode and distributes, and the bottom plate passes through spacing fixture block and mounting groove sliding connection to control through lock nut.

Furthermore, the positioning assembly comprises a fixing sleeve, a sliding ring and a compression spring, the fixing sleeve is fixedly sleeved on the end part of the rotating rod, the sliding ring is arranged on one side of the fixing sleeve, the sliding ring is slidably sleeved on the rotating rod, and the compression spring is arranged between the sliding ring and the fixing sleeve.

Further, the slip ring includes ratchet claw and spacing, and slip ring one side is equipped with ratchet claw, and ratchet claw matches with the ratchet cover, is equipped with spacing on the slip ring, and spacing slides and runs through the spacing groove, and when the alignment jig is locking state with the mounting bracket, the slip ring passes through spacing and spacing groove sliding connection, and ratchet claw joint in the ratchet cover.

Compared with the prior art, the invention has the following beneficial effects:

1. because the shaft lever is provided with two gears which correspond to the racks in position and are meshed and connected with the racks, the device is powered by a servo motor, the gears are driven to rotate by the shaft lever, the two adjusting clamp plates on the support frame slide along the first chute by utilizing the transmission of the gears and the racks, when the two adjusting clamp plates slide toward the middle in a polymerization manner, the automobile glass frame can be fixedly clamped, and when the two adjusting clamp plates slide toward the two sides in a separation manner, the automobile glass frame can be expanded outwards from the inside of the automobile glass frame to support and fix the automobile glass frame, so that the stable clamping of the automobile glass frames of different models can be met;

2. the bottom of the bottom plate is provided with four limiting fixture blocks which are distributed in a rectangular array mode, the bottom plate is connected with the mounting groove in a sliding mode through the limiting fixture blocks and is controlled by the locking nuts, and therefore the bottom plate and the adjusting frame are simple in connection mode and convenient to mount and dismount the air cylinder, and the air cylinder is convenient to replace according to different shaping requirements;

3. because slip ring one side is equipped with the ratchet claw, and the ratchet claw matches with the ratchet cover, be equipped with spacing on the slip ring, and spacing slides and runs through the spacing groove, the alignment jig can use the bull stick to rotate as the axle center, adjust the angle that bulldozes of cylinder, when the alignment jig is lock state with the mounting bracket, the slip ring passes through spacing and spacing groove sliding connection, and the ratchet claw joint is in the ratchet cover, the bull stick is fixed a position, thereby confirm the angle that bulldozes of cylinder, the steam generator is simple in structure, use the simple operation.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic axial view of the present invention.

Fig. 2 is a schematic view of the rotational angle structure drawn from fig. 1.

Fig. 3 is a schematic structural diagram of the support frame, the adjusting clamp plate and the servo motor of the invention.

Fig. 4 is a structural schematic diagram of the right support frame, the adjusting splint, the positioning frame and a part of the shaft rod led out from fig. 3 in an explosion state.

Fig. 5 is a schematic view of the structure of the adjusting splint and the positioning frame of the present invention.

Fig. 6 is a structural schematic diagram of the mounting frame and the adjusting frame of the invention in a separated state.

Fig. 7 is a structural schematic diagram of an explosion state after the installation frame is removed, which is drawn from fig. 6.

Fig. 8 is a schematic structural view of the positioning assembly of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a work table; 2. a support frame; 201. a fixing plate; 202. mounting a plate; 203. a first chute; 3. adjusting the clamping plate; 301. a rack; 302. a first slider; 4. a servo motor; 401. a shaft lever; 402. a gear; 5. a positioning frame; 501. positioning the round rod; 502. a baffle plate; 503. an extension spring; 6. a mounting frame; 601. a ratchet sleeve; 7. an adjusting bracket; 701. mounting grooves; 702. a rotating rod; 703. a limiting groove; 8. a cylinder; 801. installing a sleeve; 802. a base plate; 803. a limiting clamping block; 9. a positioning assembly; 901. fixing a sleeve; 902. a slip ring; 9021. a ratchet pawl; 9022. a limiting strip; 903. a compression spring; 10. a first hold down clip; 11. a second hold down clip.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 8:

the invention provides a shaping tool based on an automobile glass frame, which comprises a workbench 1; two supporting frames 2 are arranged in the middle of the top of the workbench 1, and four servo motors 4 are arranged on the right supporting frame 2; as shown in fig. 3, the supporting frame 2 includes a fixing plate 201, a mounting plate 202 and first sliding chutes 203, the fixing plate 201 is fixedly connected with the workbench 1 through bolts, the mounting plate 202 is fixedly mounted on the top end of the fixing plate 201, the mounting plate 202 is vertically distributed, two first sliding chutes 203 are formed in one side of the mounting plate 202, the two first sliding chutes 203 are distributed in parallel, and the first sliding chutes 203 are in a T-shaped groove structure, because the two supporting frames 2 are provided, and the two supporting frames 2 are distributed in a bilateral symmetry manner, the supporting frame supports the bottom of the automobile glass frame, and the overall balance of the frame can be ensured; two adjusting clamp plates 3 are arranged on the two supporting frames 2, and a positioning frame 5 is arranged on the front adjusting clamp plate 3; as shown in fig. 5, the positioning frame 5 includes a positioning round bar 501, a baffle plate 502 and an extension spring 503, a groove is formed in the position of the positioning frame 5 close to the top, the positioning round bar 501 is arranged at the groove of the positioning frame 5, the baffle plate 502 is arranged at the bottom end of the positioning round bar 501, the extension spring 503 is connected between the baffle plate 502 and the top wall of the groove of the positioning frame 5, the extension spring 503 is sleeved on the positioning round bar 501, and the positioning round bar 501 pushes and presses the specified position of the automobile glass frame by using the elastic action of the extension spring 503 to play a positioning role, thereby facilitating observation of whether the automobile glass frame is deviated in the shaping process; the top of the workbench 1 is provided with a mounting rack 6 close to the front side, the mounting rack 6 comprises a ratchet sleeve 601, a vertical plate of the mounting rack 6 is provided with a shaft sleeve, and the ratchet sleeve 601 is arranged in the shaft sleeve; the left side and the right side of the top of the workbench 1 are provided with first compression clamps 10, the position of the top of the workbench 1 close to the rear side is provided with second compression clamps 11, and the second compression clamps 11 and the mounting rack 6 are distributed in a front-back symmetrical mode; an adjusting frame 7 is arranged on the mounting frame 6, an air cylinder 8 is arranged at the top of the adjusting frame 7, and a positioning assembly 9 is arranged on one side of the adjusting frame 7.

As shown in fig. 3 and 4, the adjusting clamp plate 3 includes a rack 301 and a first slider 302, the rack 301 is disposed on one side of the adjusting clamp plate 3, the rack 301 and the adjusting clamp plate 3 form an L-shaped structure, the first slider 302 is disposed on one side of the rack 301, and the rack 301 is slidably connected to the first chute 203 through the first slider 302;

servo motor 4 includes axostylus axostyle 401 and gear 402, servo motor 4 passes through bolt and 2 fixed connection of right side support frame, and install axostylus axostyle 401 in servo motor 4's the pivot, axostylus axostyle 401 passes through the bearing and is connected with 2 rotations of two support frames, and be equipped with two gear 402 on the axostylus axostyle 401, gear 402 is corresponding with rack 301 position, and gear 402 is connected with rack 301 meshing, this device is provided power by servo motor 4, it rotates to drive gear 402 through axostylus axostyle 401, utilize the transmission of gear 402 and rack 301, make two on the support frame 2 adjust splint 3 and slide along first spout 203, when two adjust splint 3 to middle polymerization slip, can fix the centre gripping to car glass frame, and when two adjust splint 3 to the separation of both sides, can realize outwards expanding in the car glass frame, support fixedly it.

As shown in fig. 7, the adjusting bracket 7 includes a mounting groove 701, a rotating rod 702 and a limiting groove 703, the adjusting bracket 7 is of a T-shaped structure, two mounting grooves 701 are formed at the top of a transverse plate of the adjusting bracket 7, the rotating rod 702 is arranged at one side of a vertical plate of the adjusting bracket 7, the rotating rod 702 is rotatably connected with the mounting bracket 6 through a shaft sleeve, the limiting groove 703 is formed on the rotating rod 702, the limiting groove 703 is of a rectangular through groove structure, and the limiting groove 703 corresponds to the positioning assembly 9;

the cylinder 8 comprises an installation sleeve 801, a bottom plate 802 and limiting fixture blocks 803, the installation sleeve 801 is sleeved on the cylinder 8, the installation sleeve 801 is fixedly connected with the bottom plate 802, the bottom of the bottom plate 802 is provided with the limiting fixture blocks 803 at four positions, the limiting fixture blocks 803 at four positions are distributed in a rectangular array mode, the bottom plate 802 is slidably connected with the installation groove 701 through the limiting fixture blocks 803, and the control is realized through locking nuts, so that the connection mode of the bottom plate 802 and the adjusting frame 7 is simple, and the installation and the disassembly of the cylinder 8 are facilitated.

As shown in fig. 6-8, the positioning assembly 9 includes a fixing sleeve 901, a sliding ring 902 and a compression spring 903, the fixing sleeve 901 is fixedly installed at the end of the rotating rod 702, the sliding ring 902 is installed on one side of the fixing sleeve 901, the sliding ring 902 is slidably installed on the rotating rod 702, and the compression spring 903 is installed between the sliding ring 902 and the fixing sleeve 901;

the slip ring 902 includes ratchet claw 9021 and spacing strip 9022, slip ring 902 one side is equipped with ratchet claw 9021, and ratchet claw 9021 and ratchet cover 601 phase-match, be equipped with spacing strip 9022 on the slip ring 902, and spacing strip 9022 slides and runs through spacing groove 703, adjusting bracket 7 can use bull stick 702 as the axle center and rotate, adjust the angle that bulldozes of cylinder 8, when adjusting bracket 7 and mounting bracket 6 are locking state, slip ring 902 passes through spacing strip 9022 and spacing groove 703 sliding connection, and ratchet claw 9021 joint is in ratchet cover 601, fix a position bull stick 702 to confirm the angle that bulldozes of cylinder 8.

In another embodiment, the bottom end of the positioning round rod 501 is provided with an insertion rod, and the insertion rod is slidably inserted into the bottom fixing block of the positioning frame 5, so that the positioning round rod 501 is more stable when sliding, and the positioning round rod 501 can be always located at the central part of the extension spring 503, thereby improving the operation reliability of the extension spring 503.

The specific use mode and function of the embodiment are as follows:

in the using process, firstly, the servo motor 4 provides power, the gear 402 is driven to rotate through the shaft rod 401, the two adjusting clamp plates 3 on the support frame 2 slide along the first sliding chute 203 by utilizing the transmission of the gear 402 and the rack 301, when the two adjusting clamp plates 3 converge and slide towards the middle, the automobile glass frame can be fixedly clamped, and when the two adjusting clamp plates 3 separate and slide towards the two sides, the automobile glass frame can be expanded outwards from the inside of the automobile glass frame to support and fix the automobile glass frame;

secondly, four limiting fixture blocks 803 are arranged at the bottom of the bottom plate 802, the four limiting fixture blocks 803 are distributed in a rectangular array mode, the bottom plate 802 is connected with the mounting groove 701 in a sliding mode through the limiting fixture blocks 803 and is controlled through a locking nut, and therefore the connection mode of the bottom plate 802 and the adjusting frame 7 is simple and the cylinder 8 is convenient to mount and dismount;

in addition, the adjusting bracket 7 can rotate around the rotating rod 702 as an axis to adjust the pushing angle of the air cylinder 8, and when the adjusting bracket 7 and the mounting bracket 6 are in a locked state, the sliding ring 902 is slidably connected with the limiting groove 703 through the limiting strip 9022, the ratchet pawl 9021 is clamped in the ratchet sleeve 601, and the rotating rod 702 is positioned, so that the pushing angle of the air cylinder 8 is determined.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.