阅读说明：本技术 一种羽毛球球头加工装置 (Badminton ball head processing device ) 是由 王志鹏 唐志锋 于 2021-07-19 设计创作，主要内容包括：本发明公布了一种羽毛球球头加工装置,包括底座,底座的顶部左侧连接给料架,给料架的上端安装有导料框,底座的顶部右侧连接有立架,立架的左端连接有插孔机构,插孔机构的下方设有安装架,安装架底部固接底座,安装架的上端转动连接有中转轴,中转轴的外壁连接有转向机构,转向机构的下方设有输送带,输送带的左右两端安装有输送辊,左侧输送辊与底座之间安装有第一支撑架,右侧输送辊与底座之间安装有第二支撑架,输送带沿长度方向均布有多个阶梯孔；本发明结构设计合理,能够自动完成球头的送料、夹持、插孔、收集操作,大大降低了操作人员的劳动强度,有利于提高加工效率,能够保持插孔操作的精准运行,有利于保障产品质量。(The invention discloses a badminton ball head processing device which comprises a base, wherein the left side of the top of the base is connected with a feeding frame, the upper end of the feeding frame is provided with a material guide frame, the right side of the top of the base is connected with a vertical frame, the left end of the vertical frame is connected with a jack mechanism, a mounting frame is arranged below the jack mechanism, the bottom of the mounting frame is fixedly connected with the base, the upper end of the mounting frame is rotatably connected with a middle rotating shaft, the outer wall of the middle rotating shaft is connected with a steering mechanism, a conveying belt is arranged below the steering mechanism, conveying rollers are arranged at the left end and the right end of the conveying belt, a first support frame is arranged between the left conveying roller and the base, a second support frame is arranged between the right conveying roller and the base, and a plurality of stepped holes are uniformly distributed in the length direction of the conveying belt; the ball head inserting device is reasonable in structural design, can automatically complete feeding, clamping, inserting and collecting operations of the ball head, greatly reduces the labor intensity of operators, is beneficial to improving the machining efficiency, can keep accurate operation of inserting operation, and is beneficial to ensuring the product quality.)

1. The utility model provides a badminton ball head processingequipment, includes base (1), its characterized in that: the automatic feeding device is characterized in that the left side of the top of the base (1) is connected with the feeding frame (2), the upper end of the feeding frame (2) is provided with the guide frame (3), the right side of the top of the base (1) is connected with the vertical frame (4), the left end of the vertical frame (4) is connected with the jack mechanism (5), the lower part of the jack mechanism (5) is provided with the mounting frame (6), the bottom of the mounting frame (6) is fixedly connected with the base (1), the upper end of the mounting frame (6) is rotatably connected with the middle rotating shaft (7), the outer wall of the middle rotating shaft (7) is connected with the steering mechanism (8), the lower part of the steering mechanism (8) is provided with the conveying belt (9), the left end and the right end of the conveying belt (9) are provided with the conveying rollers (10), the left side is provided with the first supporting frame (11) between the conveying rollers (10) and the base (1), and the right side is provided with the second supporting frame (12) between the conveying rollers (10) and the base (1), the conveyer belt (9) is evenly distributed with a plurality of stepped holes (13) along the length direction.

2. The shuttlecock head processing device of claim 1, wherein: the jack mechanism (5) comprises a fixed seat (501), the top of the fixed seat (501) is provided with an air cylinder (502), the inner wall of the fixed seat (501) is symmetrically provided with slide ways (503) in front and back, the slide ways (503) are connected with slide blocks (504) in a sliding way, a lifting block (505) is connected between the two slide blocks (504), the top of the lifting block (505) is fixedly connected with the movable end of the cylinder (502), the bottom of the lifting block (505) is connected with a needle inserting disc (506), the lower end of the needle inserting disc (506) is connected with a plurality of needle inserting needles (507), the lower part of the inner cavity of the fixed seat (501) is connected with an anti-drop plate (508), the center of the top section of the anti-drop plate (508) is provided with a pin through hole (509) matched with the contact pin (507), and a return spring (510) is connected between the front side and the rear side of the top of the anti-falling plate (508) and the lifting block (505).

3. A shuttlecock head processing apparatus as claimed in claim 2, wherein: steering mechanism (8) are including two circle baffles (801), two both sides around the outer wall of circle baffle (801) rigid coupling king-axle (7) respectively, two all seted up a plurality of guiding holes on circle baffle (801), the activity is pegged graft in the guiding hole has U-shaped pole (802), and is a plurality of U-shaped pole (802) are annular array dress and arrange, the end connection that U-shaped pole (802) stretched into circle baffle (801) inboard has grip block (803), be connected with compression spring (804) between grip block (803) and circle baffle (801) inner wall, front and back two sets of storage tank (805) have been seted up to the symmetry between grip block (803), the top storage tank (805) are located under pinhole (509).

4. A shuttlecock head processing apparatus as claimed in claim 3, wherein: the inner wall of grip block (803) inlays and is equipped with electro-magnet (8031), and both sides around the electro-magnet (8031) are close to the magnetic pole of one end the same mutually, and a plurality of push switches (8011) are installed to the front side the outer wall of circle baffle (801), every push switch (8011) equal electric connection a set of electro-magnet (8031) that correspond from beginning to end.

5. A badminton head processing device according to claim 4, wherein: the lower part of the inner wall of the mounting rack (6) is connected with a horizontal plate (601), the horizontal plate (601) is positioned below the upper-layer stepped hole (13), the top center of the horizontal plate (601) is connected with an electric push rod (602), the movable end of the top of the electric push rod (602) is connected with a jacking block (603), the area of the top surface of the jacking block (603) is smaller than the area of the bottom opening of the stepped hole (13), an infrared signal emitter (604) is embedded at the front end of the mounting rack (6), an infrared signal receiver (605) is embedded at the rear end of the mounting rack (6), the infrared signal transmitter (604) and the infrared signal receiver (605) are positioned on the upper side of the stepped hole (13), the front end of the right side wall of the mounting rack (6) is connected with an L-shaped block (606), and the rear end of the L-shaped block (606) is located on the traveling route of the push switch (8011).

6. The shuttlecock head processing device of claim 1, wherein: the right side the rear end of conveying roller (10) is connected with first band pulley (14), the rear end of well pivot (7) is connected with second band pulley (15), the cover is equipped with drive belt (16) between first band pulley (14) and second band pulley (15), the front end of first support frame (11) is connected with driving motor (17), left side conveying roller (10) is connected to the power take off of driving motor (17).

7. The shuttlecock head processing device of claim 1, wherein: the connecting rod (18) is connected with the upper portion of the outer wall of the second supporting frame (12), a discharging groove (19) is connected with the top of the connecting rod (18), an included angle between the discharging groove (19) and the horizontal plane is 25-30 degrees, a material collecting box (20) is arranged on the right side of the second supporting frame (12), the material collecting box (20) is located below the right end of the discharging groove (19), and the left end of the discharging groove (19) is located below the left of the steering mechanism (8).

8. A shuttlecock head processing apparatus as claimed in claim 3, wherein: the fixing seat (501) is arranged in a U-shaped structure, and the lower part of the inner wall of the fixing seat (501) is abutted to the U-shaped rod (802).

9. A badminton head processing device according to claim 5, wherein: the electric push rod (602) and the needle inserting disc (506) are arranged coaxially, and the axial lead of the electric push rod (602) is perpendicular to the axial lead of the central rotating shaft (7).

10. A badminton head processing device according to claim 5, wherein: the front end of mounting bracket (6) is connected with PLC controller (21), PLC controller (21) electric connection electric putter (602), infrared signal transmitter (604), infrared signal receiver (605) and cylinder (502).

Technical Field

The invention relates to the technical field of badminton production and processing equipment, in particular to a badminton head processing device.

Background

Shuttlecocks are small-sized indoor sports items made of soft wood and feathers hit with a long-handled tennis racket, with a net interposed therebetween. Badminton is played on a rectangular field, the middle of the field is separated by a net, and the two parties use various technical skills of serving, batting, moving and the like to carry out the counterbatting of the ball on the net, so that the ball is not fallen into the effective area of the badminton or the batting of the other party is made to be wrong.

In the production process of the badminton, the insertion hole processing is needed to be carried out on the badminton head, so that the badminton frame can be conveniently implanted and glued for fixing in the later process, the badminton head processing is an important ring in the badminton manufacturing process, the quality of the badminton head punching quality can directly influence the quality of the badminton, and the badminton head processing device is provided for guaranteeing the processing quality and improving the processing efficiency.

Disclosure of Invention

The invention aims to provide a badminton head processing device to overcome the technical problems in the prior art.

In order to achieve the technical purpose and achieve the technical effect, the invention provides the following technical scheme:

the utility model provides a badminton ball head processingequipment, includes the base, the work or material rest is connected in the top left side of base, the guide frame is installed to the upper end of work or material rest, the top right side of base is connected with the grudging post, the left end of grudging post is connected with jack mechanism, jack mechanism's below is equipped with the mounting bracket, mounting bracket bottom rigid coupling base, the upper end of mounting bracket is rotated and is connected with the pivot, the outer wall connection of pivot has steering mechanism, steering mechanism's below is equipped with the conveyer belt, the conveying roller is installed at both ends about the conveyer belt, left side install first support frame, right side between conveying roller and the base install the second support frame between conveying roller and the base, the conveyer belt has a plurality of shoulder holes along the length direction equipartition.

Preferably, among the badminton bulb processingequipment, jack mechanism includes the fixing base, the cylinder is installed at the top of fixing base, the slide has been seted up to the symmetry around the inner wall of fixing base, sliding connection has the slider, two in the slide connect the elevator between the slider, elevator top rigid coupling cylinder expansion end, the bottom of elevator is connected with the contact pin dish, the lower extreme of contact pin dish is connected with a plurality of contact pins, the inner chamber sub-unit connection of fixing base has the anticreep board, the top segment center of anticreep board has been seted up with contact pin matched with and has been crossed the pinhole, be connected with reset spring between both sides and the elevator around the top of anticreep board.

Preferably, among the badminton bulb processingequipment, steering mechanism includes two circle baffles, two both sides around the outer wall of circle baffle rigid coupling mesoaxis respectively, two a plurality of guiding holes have all been seted up on the circle baffle, the activity is pegged graft in the guiding hole and is had the U-shaped pole, and is a plurality of the U-shaped pole is the annular array device and arranges, the U-shaped pole stretches into the inboard end connection of circle baffle and has the grip block, be connected with compression spring between grip block and the circle baffle inner wall, it is two sets of from beginning to end the storage tank has been seted up to the symmetry between the grip block, the top the storage tank is located under the pinhole.

Preferably, among the badminton bulb processingequipment, the inner wall of grip block inlays and is equipped with the electro-magnet, both sides around the electro-magnet is close to the magnetic pole of one end the same mutually, the front side a plurality of push switches, every are installed to the outer wall of circle baffle the electro-magnet that corresponds around the equal electric connection of push switch is a set of.

Preferably, among the badminton bulb processingequipment, the inner wall sub-unit connection of mounting bracket has the horizontal plate, the horizontal plate is located upper shoulder hole below, the top center of horizontal plate is connected with electric putter, electric putter's top expansion end is connected with the jacking piece, the top surface area of jacking piece is less than the bottom open area of shoulder hole, the front end of mounting bracket inlays and is equipped with infrared signal transmitter, the rear end of mounting bracket inlays and is equipped with infrared signal receiver, infrared signal transmitter and infrared signal receiver are located the shoulder hole upside, the right side wall front end of mounting bracket is connected with L type piece, the rear end of L type piece is located press switch's the route of advancing.

Preferably, in the badminton ball head processing device, the right side the rear end of conveying roller is connected with first band pulley, the rear end of well pivot is connected with the second band pulley, the cover is equipped with driving belt between first band pulley and the second band pulley, the front end of first support frame is connected with driving motor, driving motor's power take off end connects left side conveying roller.

Preferably, in the badminton ball head machining device, the upper portion of the outer wall of the second support frame is connected with a connecting rod, the top of the connecting rod is connected with a discharge chute, an included angle between the discharge chute and the horizontal plane is 25-30 degrees, the right side of the second support frame is provided with a material collecting box, the material collecting box is located below the right end of the discharge chute, and the left end of the discharge chute is located below the left side of the steering mechanism.

Preferably, among the badminton bulb processingequipment, the fixing base is the setting of U type structure, the inner wall lower part butt U-shaped pole of fixing base.

Preferably, in the badminton head processing device, the electric push rod and the contact pin disc are arranged on the same axial lead, and the axial lead of the electric push rod is perpendicular to the axial lead of the central rotating shaft.

Preferably, among the badminton bulb processingequipment, the front end of mounting bracket is connected with the PLC controller, PLC controller electric connection electric putter, infrared signal transmitter, infrared signal receiver and cylinder.

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

1. the badminton ball head guiding device is reasonable in structural design, the badminton ball head falls into the lower conveying belt along the guiding frame, the round surface of the badminton ball head faces upwards, the plane of the badminton ball head faces downwards and is embedded into the upper portion of the stepped hole, the position of the stepped hole is switched after the conveying belt rotates clockwise, the badminton ball head can be continuously conveyed to the lower portion of the steering mechanism, the steering mechanism is used for clamping the badminton ball head and the badminton ball head rotates to the lower portion of the jack mechanism, therefore, jack processing is facilitated, and operation is simple and convenient;

2. according to the invention, when the ball head enters the position right below the steering mechanism, the light beam sent by the infrared signal transmitter to the infrared signal receiver is blocked, the PLC starts the electric push rod and the air cylinder, the ball head can be squeezed into the accommodating groove at the lowest side by the jacking block, the lifting block is pressed downwards by the movable end of the air cylinder, the contact pin is inserted into the plane end of the ball head through the pin hole, and the ball head after the pin is pulled out is prevented from being separated from the accommodating groove by the anti-dropping plate;

3. according to the invention, the push switch contacts the L-shaped block when rotating along with the round baffle, the push switch is pressed to start the two corresponding electromagnets, the two electromagnets repel each other after being electrified, the magnetic repulsion overcomes the elastic force of the compression spring to do work, so that the distance between the two clamping blocks is increased, the ball head falls from the containing groove, the discharging groove is used for carrying and guiding the falling ball head, and the processed ball head is introduced into the collecting box to be collected, so that the collection box is simple and convenient.

In conclusion, the ball head automatic feeding device can automatically complete feeding, clamping, inserting and collecting operations of the ball head, greatly reduces the labor intensity of operators, is beneficial to improving the machining efficiency, can keep accurate operation of inserting operation, and is beneficial to ensuring the product quality.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive labor.

FIG. 1 is a first general structural diagram of the present invention;

FIG. 2 is a second overall view of the present invention;

FIG. 3 is a schematic structural view of a jack mechanism according to the present invention;

FIG. 4 is a schematic structural view of a steering mechanism according to the present invention;

FIG. 5 is a schematic view of the front circular baffle of the present invention;

FIG. 6 is a schematic structural view of a clamping block according to the present invention;

FIG. 7 is a schematic structural view of a mount of the present invention;

FIG. 8 is a schematic view showing the structure of a discharge chute according to the present invention.

In the figure: 1. a base; 2. a feeding frame; 3. a material guiding frame; 4. erecting a frame; 5. a jack mechanism; 6. a mounting frame; 7. a middle rotating shaft; 8. a steering mechanism; 9. a conveyor belt; 10. a conveying roller; 11. a first support frame; 12. a second support frame; 13. a stepped hole; 14. a first pulley; 15. a second pulley; 16. a drive belt; 17. a drive motor; 18. a connecting rod; 19. a discharge chute; 20. a material collecting box; 21. a PLC controller; 501. a fixed seat; 502. a cylinder; 503. a slideway; 504. a slider; 505. a lifting block; 506. a needle inserting plate; 507. inserting a pin; 508. an anti-drop plate; 509. pinhole crossing; 510. a return spring; 601. a horizontal plate; 602. an electric push rod; 603. jacking blocks; 604. an infrared signal transmitter; 605. an infrared signal receiver; 606. an L-shaped block; 801. a round baffle plate; 802. a U-shaped rod; 803. a clamping block; 804. a compression spring; 805. a containing groove; 8011. a push switch; 8031. an electromagnet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1-2, the present embodiment is a badminton ball head processing device, which includes a base 1, a feeding frame 2 is connected to the left side of the top of the base 1, a material guiding frame 3 is installed at the upper end of the feeding frame 2, a vertical frame 4 is connected to the right side of the top of the base 1, a hole inserting mechanism 5 is connected to the left end of the vertical frame 4, an installation frame 6 is installed below the hole inserting mechanism 5, the base 1 is fixedly connected to the bottom of the installation frame 6, a middle rotating shaft 7 is rotatably connected to the upper end of the installation frame 6, a steering mechanism 8 is connected to the outer wall of the middle rotating shaft 7, a conveying belt 9 is installed below the steering mechanism 8, conveying rollers 10 are installed at the left and right ends of the conveying belt 9, a first support frame 11 is installed between the left conveying roller 10 and the base 1, a second support frame 12 is installed between the right conveying roller 10 and the base 1, a plurality of stepped holes 13 are uniformly distributed along the length direction of the conveying belt 9, a certain gap is reserved between the conveying belt 9 and the material guiding frame 3, so that the ball head at the lowest layer can fall into the upper part of the stepped hole 13.

The rear end of right side conveying roller 10 is connected with first band pulley 14, and the rear end of well pivot 7 is connected with second band pulley 15, and the cover is equipped with drive belt 16 between first band pulley 14 and the second band pulley 15, and the front end of first support frame 11 is connected with driving motor 17, and left side conveying roller 10 is connected to driving motor 17's power take off end.

The specific implementation manner of this embodiment is:

this device is external power supply when using, base 1 arranges the plane in, the badminton bulb falls into below conveyer belt 9 along guide frame 3, the bulb disc is up, plane embedding shoulder hole 13 upper portion down, utilize driving motor 17 to drive left side conveying roller 10 clockwise rotation, make conveyer belt 9 clockwise operation back shoulder hole 13 position switch, can continuously send the bulb into steering mechanism 8 below, right side conveying roller 10 rotates along with conveyer belt 9 is synchronous, utilize first band pulley 14, second band pulley 15 and driving belt 16 cooperate, make the pivot 7 drive steering mechanism 8 and rotate certain angle, steering mechanism 8 centre gripping bulb operates to jack mechanism 5 below, thereby be convenient for carry out jack processing, and easy operation is convenient.

Example two

Referring to fig. 1-7, based on the first embodiment, the jack mechanism 5 includes a fixing base 501, a cylinder 502 is installed at the top of the fixing base 501, slideways 503 are symmetrically formed in the front and back of the inner wall of the fixing base 501, sliders 504 are slidably connected to the slideways 503, a lifting block 505 is connected between the two sliders 504, the top of the lifting block 505 is fixedly connected to the movable end of the cylinder 502, a pin plate 506 is connected to the bottom of the lifting block 505, a plurality of pins 507 are connected to the lower end of the pin plate 506, an anti-falling plate 508 is connected to the lower portion of the inner cavity of the fixing base 501, a pin passing hole 509 matched with the pins 507 is formed in the center of the top section of the anti-falling plate 508, return springs 510 are connected between the front and back sides of the top of the anti-falling plate 508 and the lifting block 505, the lifting block 505 is pushed by the elastic force of the return springs 510, and the lifting block 505 can be retracted in time after the completion of the jack.

Steering mechanism 8 includes two circle baffles 801, both sides around the outer wall of two circle baffles 801 rigid coupling mesocele 7 respectively, a plurality of guiding holes have all been seted up on two circle baffles 801, the activity grafting has U-shaped pole 802 in the guiding hole, a plurality of U-shaped poles 802 are annular array dress and arrange, the end connection that U-shaped pole 802 stretches into circle baffle 801 inboard has grip block 803, be connected with compression spring 804 between grip block 803 and the circle baffle 801 inner wall, storage tank 805 has been seted up to the symmetry between two sets of grip blocks 803 in the front and back, utilize compression spring 804's elastic force effect to push up grip block 803, make two grip blocks 803 be close to each other, can make the bulb centre gripping in storage tank 805, the most one side storage tank 805 is located under pinhole 509, be convenient for carry out the jack operation.

Inner wall sub-unit connection of mounting bracket 6 has horizontal plate 601, horizontal plate 601 is located upper strata shoulder hole 13 below, the top center of horizontal plate 601 is connected with electric putter 602, the top expansion end of electric putter 602 is connected with jacking block 603, the top surface area of jacking block 603 is less than the bottom open area of shoulder hole 13, the front end of mounting bracket 6 is inlayed and is equipped with infrared signal transmitter 604, the rear end of mounting bracket 6 is inlayed and is equipped with infrared signal receiver 605, infrared signal transmitter 604 is located shoulder hole 13 upside with infrared signal receiver 605, the right side wall front end of mounting bracket 6 is connected with L type piece 606, the rear end of L type piece 606 is located push switch 8011's the route of advancing.

The front end of mounting bracket 6 is connected with PLC controller 21, and PLC controller 21 electric connection electric putter 602, infrared signal transmitter 604, infrared signal receiver 605 and cylinder 502, the control assembly operation of being convenient for.

The specific implementation manner of this embodiment is:

in this embodiment, when the ball head enters the position right below the steering mechanism 8 along with the stepped hole, the light beam emitted from the infrared signal emitter 604 to the infrared signal receiver 605 is blocked, at this time, the PLC controller 21 starts the electric push rod 602 and the air cylinder 502, the electric push rod 602 drives the jacking block 603 to ascend, the jacking block 603 extrudes the ball head into the lowermost accommodating groove 805, the distance between the two clamping blocks 803 is increased, the ball head can be kept attached to the inner wall of the accommodating groove 805 by the elastic force of the compression spring 804, the ball head can be transferred along with the accommodating groove 805, the movable end presses the lifting block 505 when the air cylinder 502 is started, the slider 504 is matched with the slide 503, the lifting block 505 can be prevented from deflecting, the pin dial 506 drives the pin 507 to move downwards, the pin 507 is inserted into the plane end of the ball head through the pin hole 509, the lifting block 505 moves upwards after the insertion is completed, the anti-off plate 508 abuts against the plane of the ball head, and the ball head after the pin is prevented from being pulled out from being separated from the accommodating groove 805.

EXAMPLE III

Referring to fig. 1-8, on the basis of the second embodiment, an electromagnet 8031 is embedded in the inner wall of the clamping block 803, the magnetic poles of the front and rear electromagnets 8031 at the ends close to each other are the same, a plurality of push switches 8011 are installed on the outer wall of the front circular baffle 801, and each push switch 8011 is electrically connected to a set of front and rear corresponding electromagnets 8031.

The upper portion of the outer wall of the second support frame 12 is connected with a connecting rod 18, the top of the connecting rod 18 is connected with a discharge chute 19, an included angle between the discharge chute 19 and the horizontal plane is 25-30 degrees, the right side of the second support frame 12 is provided with a material collecting box 20, the material collecting box 20 is located below the right end of the discharge chute 19, and the left end of the discharge chute 19 is located below the left side of the steering mechanism 8.

Fixing base 501 is the setting of U type structure, and fixing base 501's inner wall lower part butt U-shaped pole 802 utilizes fixing base 501 inner wall butt U-shaped pole 802, can carry out limiting displacement to grip block 803, avoids two grip block 803 in the jack in-process apart from the increase to lead to the bulb to drop.

The electric push rod 602 and the pin inserting disc 506 are arranged coaxially, and the axial lead of the electric push rod 602 is perpendicular to the axial lead of the central rotating shaft 7, so that synchronous and accurate operation of ejection and jacks can be kept.

The specific implementation manner of this embodiment is:

in this embodiment, the ball head behind the insertion hole runs to the right side of the steering mechanism 8, the push switch 8011 on the front round baffle 801 can contact the L-shaped block 606, the two corresponding electromagnets 8031 are started after the push switch 8011 is pressed, the two electromagnets 8031 are in like polarity repulsion after being electrified, the magnetic repulsion overcomes the elastic force of the compression spring 804 to do work, the distance between the two clamping blocks 803 is increased, the ball head falls from the accommodating groove 805, the falling ball head is received and guided by the discharging groove 19, and the processed ball head is introduced into the material collecting box 20 to be collected, which is simple and convenient.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.