阅读说明：本技术 一种针织布的布匹自动缠绕机 (Automatic cloth winding machine for knitted fabric ) 是由 姚丹翔 于 2021-03-10 设计创作，主要内容包括：本发明公开了一种针织布的布匹自动缠绕机,包括底板,所述底板的上表面的右侧固定连接有侧板,所述底板的上表面上固定连接有前后位置对称的固定板,所述固定板的相对的一侧表面上通过轴承转动连接有空心轴,所述空心轴上转动连接有转盘,所述空心轴的内部设有固定连接于所述固定板之间的固定杆,所述转盘的相对的一侧表面内设有第一空间,能够全自动的实现对布料的缠绕工作,并且通过角度传感器可实现对缠绕长度的控制,并且缠绕完毕后能够自动的切换并开始第二轮的缠绕,工作人员只需要更换缠绕杆即可,工作效率高,劳动强度低,操作简单,使用非常的方便,值得大力推广。(The invention discloses an automatic cloth winding machine for knitted fabrics, which comprises a bottom plate, wherein a side plate is fixedly connected to the right side of the upper surface of the bottom plate, fixing plates with symmetrical front and back positions are fixedly connected to the upper surface of the bottom plate, a hollow shaft is rotatably connected to the opposite side surface of the fixing plate through a bearing, a turntable is rotatably connected to the hollow shaft, a fixing rod fixedly connected between the fixing plates is arranged inside the hollow shaft, a first space is arranged in the opposite side surface of the turntable, the winding work of the cloth can be automatically realized, the winding length can be controlled through an angle sensor, the winding can be automatically switched and a second round of winding can be started after the winding is finished, a worker only needs to replace the winding rod, the working efficiency is high, the labor intensity is low, the operation is simple, and the use is very convenient, is worthy of being widely popularized.)

1. The utility model provides an automatic coiler of cloth of looped fabric, includes the bottom plate, its characterized in that: the right side of the upper surface of the bottom plate is fixedly connected with a side plate, the upper surface of the bottom plate is fixedly connected with fixing plates with symmetrical front and back positions, one opposite side surface of each fixing plate is rotatably connected with a hollow shaft through a bearing, the hollow shaft is rotatably connected with a turntable, a fixing rod fixedly connected between the fixing plates is arranged in the hollow shaft, a first space is arranged in one opposite side surface of the turntable, a first rotating shaft is rotatably connected onto one opposite side wall of the first space, a rotating block is fixedly connected onto the first rotating shaft, a second space is arranged on the rotating block, a third space is arranged in one opposite side wall of the second space, a clamping block is slidably connected into the third space, a first spring is fixedly connected between the clamping block and the inner wall of the third space, and a winding rod clamped by the clamping block is arranged between the second spaces on the front side and the back side, a first gear fixedly connected to the first rotating shaft is arranged on one side of the rotating block opposite to the rotating block, a second gear is meshed and connected to the lower side of the first gear, a second rotating shaft extending out of the surface of one side of the rotating disc opposite to the rotating disc is fixedly connected to one side of the second gear opposite to the rotating block, a third gear is fixedly connected to one end of the second rotating shaft opposite to the rotating disc, a supporting plate is fixedly connected to the upper end of the fixing plate, a shearing mechanism used for shearing cloth and fixing the cloth is fixedly connected between the supporting plates, a fourth space is arranged in the upper surface of the side plate, a roller with symmetrical upper and lower positions is rotatably connected between the front wall and the rear wall of the fourth space, an angle sensor used for detecting the number of rotating turns of the roller is fixedly connected to the bottom wall of the fourth space, and a power mechanism used for driving the hollow shaft, and a switching mechanism for switching the power transmission target of the power mechanism is arranged in one side wall of the rotary disc opposite to the rotary disc.

2. The automatic cloth winding machine for knitted cloth according to claim 1, characterized in that: it includes fixed connection in to cut the mechanism fixed block between the backup pad, the inside of fixed block is equipped with the fifth space, it has the slip space to run through in the diapire in fifth space, first electro-magnet has set firmly in the roof in fifth space, sliding connection has the slide bar in the fifth space, the slide bar with fixedly connected with second spring between the first electro-magnet, be equipped with the sixth space in the lower surface of slide bar, fixedly connected with gag lever post between the preceding back wall in sixth space, sliding connection has sliding connection in on the gag lever post cut the sword in the sixth space, cut the sword with fixedly connected with third spring between the antetheca in sixth space, fixedly connected with is used for fixing on the lower surface of slide bar the air nail rifle of cloth, first electro-magnet with angle sensor electric connection.

3. The automatic cloth winding machine for knitted cloth according to claim 1, characterized in that: the power mechanism comprises a first motor fixedly arranged in the upper surface of the bottom plate, the front side and the rear side of the first motor are in power connection with a third rotating shaft, a belt wheel space is arranged in the fixed plate, a fourth rotating shaft extending out of the fixed plate is rotatably connected in one side wall of the belt wheel space, which is opposite to the other side, of the belt wheel space, the fourth rotating shaft and the third rotating shaft are fixedly connected with belt wheels which are symmetrically arranged in the belt wheel space in the front and rear direction, a belt is connected between the belt wheels on the two sides of the upper side, a fourth gear is fixedly connected at the opposite end of the fourth rotating shaft, a fifth gear fixedly connected on the hollow shaft is meshed with the upper side of the fourth gear, a supporting rod which is symmetrically arranged in the upper and lower direction is fixedly connected on the fixed rod, a fifth rotating shaft is fixedly connected on the supporting rod, and the front end and the rear end of the fifth rotating shaft are rotatably connected with a seventh gear in meshed connection with the sixth gear, and the seventh gear can be in meshed connection with the third gear.

4. The automatic cloth winding machine for knitted cloth according to claim 1, characterized in that: the switching mechanism comprises a hollow rod which is fixedly connected to the lower side and is symmetrical in the front and back positions, an extrusion rod is connected in the hollow rod in a sliding manner, a fourth spring is fixedly connected between the extrusion rod and the inner wall of the hollow rod, a first annular cavity and a second annular cavity which are symmetrical in the front and back positions are arranged in one side face of the rotary table, a third annular cavity is arranged in one side wall of the first annular cavity opposite to the first annular cavity, a first circular ring is connected in the first annular cavity in a sliding manner, a fifth spring is fixedly connected between the first circular ring and one side wall of the third annular cavity opposite to the first circular ring, a second circular ring used for extruding the sixth gear is connected in the second annular cavity in a sliding manner, a sixth spring is fixedly connected between one side wall of the second circular ring and one side wall of the second annular cavity opposite to the first circular ring, and a first pull rope is fixedly connected between the first circular ring and the, and a second electromagnet fixedly arranged on the lower side of the supporting rod is fixedly connected between the hollow rods, and the second electromagnet is electrically connected with the angle sensor.

5. The automatic cloth winding machine for knitted cloth according to claim 2, characterized in that: the rear side in sixth space is equipped with and is located the inside motor space of slide bar, set firmly the second motor in the diapire in motor space, the upper end power of second motor is connected with the sixth pivot, fixedly connected with pulley in the sixth pivot, the pulley with fixedly connected with second stay cord between the rear surface of shearing sword, the downside of second motor is equipped with and is used for controlling the second motor first motor the gas nail rifle opens and close set firmly in the controller in fifth space upper surface.

Technical Field

The invention relates to the technical field of knitting machines, in particular to an automatic cloth winding machine for knitted fabrics.

Background

The knitted fabric is a fabric formed by bending yarns into loops by using a knitting needle and mutually interlooping the loops, and is widely used in the aspect of manufacturing clothes;

when the cloth is packed, the cloth is generally wound into cloth for sale or storage, and the conventional one-side winding equipment has some defects, such as inconvenient control of the winding length of the cloth, low winding efficiency, more manual participation steps, complex operation, high labor intensity and the like.

Disclosure of Invention

The invention aims to provide an automatic cloth winding machine for knitted cloth, which is used for overcoming the defects in the prior art.

The automatic cloth winding machine for knitted fabrics comprises a bottom plate, wherein a side plate is fixedly connected to the right side of the upper surface of the bottom plate, fixing plates with symmetrical front and back positions are fixedly connected to the upper surface of the bottom plate, a hollow shaft is rotatably connected to the opposite side surface of the fixing plates through a bearing, a rotating disc is rotatably connected to the hollow shaft, a fixing rod fixedly connected between the fixing plates is arranged inside the hollow shaft, a first space is arranged inside the opposite side surface of the rotating disc, a first rotating shaft is rotatably connected to the opposite side wall of the first space, a rotating block is fixedly connected to the first rotating shaft, a second space is arranged on the rotating block, a third space is arranged inside the opposite side wall of the second space, a clamping block is slidably connected to the third space, and a first spring is fixedly connected between the clamping block and the inner wall of the third space, a winding rod clamped by the clamping block is arranged between the second spaces at the front side and the rear side, a first gear fixedly connected to the first rotating shaft is arranged at one side of the rotating block, which is opposite to the rotating block, a second rotating shaft extending out of the surface of one side, which is opposite to the rotating disc, is fixedly connected to one end, which is opposite to the second rotating shaft, of the second rotating shaft, a third gear is fixedly connected to one end, which is opposite to the second rotating shaft, a supporting plate is fixedly connected to the upper end of the fixing plate, a shearing mechanism for shearing cloth and fixing the cloth is fixedly connected between the supporting plates, a fourth space is arranged in the upper surface of the side plate, a roller with symmetrical upper and lower positions is rotatably connected between the front wall and the rear wall of the fourth space, and an angle sensor for detecting the number of rotating turns of the roller is fixedly connected to the bottom wall of, the inner part of the bottom plate is provided with a power mechanism for driving the hollow shaft and the third gear to rotate, and a switching mechanism for switching a power transmission target of the power mechanism is arranged in one side wall of the turntable.

On the basis of the technical scheme, the shearing mechanism comprises a fixed block fixedly connected between the supporting plates, a fifth space is arranged inside the fixed block, a sliding space penetrates through the bottom wall of the fifth space, a first electromagnet is fixedly arranged in the top wall of the fifth space, a sliding rod is connected in the fifth space in a sliding manner, a second spring is fixedly connected between the slide bar and the first electromagnet, a sixth space is arranged in the lower surface of the slide bar, a limiting rod is fixedly connected between the front wall and the rear wall of the sixth space, a shearing knife which is connected with the sixth space in a sliding way is connected on the limiting rod, the shearing knife and the front wall of the sixth space are fixedly connected with a third spring, the lower surface of the sliding rod is fixedly connected with a pneumatic nail gun for fixing the cloth, and the first electromagnet is electrically connected with the angle sensor.

On the basis of the technical scheme, the power mechanism comprises a first motor fixedly arranged in the upper surface of the bottom plate, the front side and the rear side of the first motor are in power connection with a third rotating shaft, a belt wheel space is arranged in the fixed plate, a fourth rotating shaft extending out of the fixed plate is rotatably connected in one side wall of the belt wheel space opposite to the side wall, the fourth rotating shaft and the third rotating shaft are fixedly connected with belt wheels which are symmetrically arranged in the belt wheel space in the front and rear direction, a belt is connected between the belt wheels on the two sides of the upper side, a fourth gear is fixedly connected at one opposite end of the fourth rotating shaft, a fifth gear fixedly connected to the hollow shaft is meshed at the upper side of the fourth gear, supporting rods which are symmetrically arranged in the upper and lower direction are fixedly connected to the fixed rod, a fifth rotating shaft is fixedly connected to the supporting rods on the upper side, and a sixth gear, and the front end and the rear end of the fifth rotating shaft are rotatably connected with a seventh gear in meshed connection with the sixth gear, and the seventh gear can be in meshed connection with the third gear.

On the basis of the technical scheme, the switching mechanism comprises a hollow rod which is fixedly connected to the lower side and has symmetrical front and back positions, an extrusion rod is connected in the hollow rod in a sliding manner, a fourth spring is fixedly connected between the extrusion rod and the inner wall of the hollow rod, a first annular cavity and a second annular cavity which are symmetrical front and back positions are arranged in one side surface of the rotary disc opposite to each other, a third annular cavity is arranged in one side wall of the first annular cavity opposite to each other, a first annular ring is connected in the first annular cavity in a sliding manner, a fifth spring is fixedly connected between the first annular ring and one side wall of the third annular cavity opposite to each other, a second annular ring for extruding the sixth gear is connected in the second annular cavity in a sliding manner, a sixth spring is fixedly connected between one side wall of the second annular ring opposite to each other, and a first pull rope is fixedly connected between the first annular ring and the second annular ring, and a second electromagnet fixedly arranged on the lower side of the supporting rod is fixedly connected between the hollow rods, and the second electromagnet is electrically connected with the angle sensor.

On the basis of the technical scheme, a motor space located inside the sliding rod is arranged on the rear side of the sixth space, a second motor is fixedly arranged in the bottom wall of the motor space, a sixth rotating shaft is dynamically connected to the upper end of the second motor, a pulley is fixedly connected to the sixth rotating shaft, a second pull rope is fixedly connected between the pulley and the rear surface of the shearing knife, and a controller fixedly arranged in the upper surface of the fifth space and used for controlling the second motor, the first motor and the air nail gun to be opened and closed is arranged on the lower side of the second motor.

The invention has the beneficial effects that: the winding work of realization to the cloth that can be full-automatic to can realize the control to winding length through angle sensor, and the winding finishes the back can be automatic switch over and begin the winding of second round, the staff only need change the winding pole can, work efficiency is high, low in labor strength, easy operation uses convenience very, is worth wideling popularize.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described 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 to obtain other drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of an automatic piece goods winding machine for knitted cloth according to the present invention;

3 FIG. 32 3 is 3 a 3 schematic 3 view 3 of 3 the 3 present 3 invention 3 taken 3 along 3 the 3 line 3 A 3- 3 A 3 of 3 FIG. 31 3; 3

FIG. 3 is an enlarged view of the invention at B in FIG. 1;

FIG. 4 is an enlarged view of the invention at C in FIG. 2;

FIG. 5 is an enlarged view of the invention at D in FIG. 2;

fig. 6 is an enlarged view of the invention at E in fig. 4.

Detailed Description

The invention will now be described in detail with reference to fig. 1-6, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Referring to fig. 1 to 6, an automatic piece goods winding machine for knitted fabric according to an embodiment of the present invention includes a base plate 10, a side plate 11 is fixedly connected to a right side of an upper surface of the base plate 10, a fixing plate 73 having a front-rear symmetrical position is fixedly connected to the upper surface of the base plate 10, a hollow shaft 28 is rotatably connected to one surface of the fixing plate 73 through a bearing 26, a rotary table 12 is rotatably connected to the hollow shaft 28, a fixing rod 27 fixedly connected between the fixing plates 73 is disposed inside the hollow shaft 28, a first space 56 is disposed inside one surface of the rotary table 12, a first rotary shaft 55 is rotatably connected to one side wall of the first space 56, a rotary block 52 is fixedly connected to the first rotary shaft 55, a second space 46 is disposed on the rotary block 52, and a third space 44 is disposed inside one side wall of the second space 46, a clamping block 42 is slidably connected in the third space 44, a first spring 43 is fixedly connected between the clamping block 42 and the inner wall of the third space 44, a winding rod 45 clamped by the clamping block 42 is arranged between the second spaces 46 at the front side and the rear side, a first gear 54 fixedly connected to the first rotating shaft 55 is arranged at the opposite side of the rotating block 52, a second gear 53 is engaged and connected to the lower side of the first gear 54, a second rotating shaft 21 extending out of the opposite side surface of the rotating disc 12 is fixedly connected to the opposite side of the second gear 53, a third gear 22 is fixedly connected to the opposite end of the second rotating shaft 21, a support plate 74 is fixedly connected to the upper end of the fixed plate 73, a shearing mechanism 801 for shearing the cloth 39 and fixing the cloth 39 is fixedly connected between the support plates 74, and a fourth space 14 is arranged in the upper surface of the side plate 11, the front wall and the rear wall of the fourth space 14 are rotatably connected with rollers 15 which are symmetrical up and down, the bottom wall of the fourth space 14 is fixedly connected with an angle sensor 13 for detecting the number of rotation turns of the rollers 15, the bottom plate 10 is internally provided with a power mechanism 802 for driving the hollow shaft 28 and the third gear 22 to rotate, and a switching mechanism 803 for switching the power transmission target of the power mechanism 802 is arranged in one side wall opposite to the rotary plate 12.

In addition, in one embodiment, the shearing mechanism 801 includes a fixing block 34 fixedly connected between the supporting plates 74, a fifth space 35 is disposed inside the fixing block 34, a sliding space 36 penetrates through a bottom wall of the fifth space 35, a first electromagnet 33 is fixedly disposed in a top wall of the fifth space 35, a sliding rod 37 is slidably connected in the fifth space 35, a second spring 38 is fixedly connected between the sliding rod 37 and the first electromagnet 33, a sixth space 50 is disposed in a lower surface of the sliding rod 37, a limiting rod 49 is fixedly connected between front and rear walls of the sixth space 49, a shearing knife 41 slidably connected to the sixth space 50 is slidably connected on the limiting rod 49, a third spring 47 is fixedly connected between the shearing knife 41 and the front wall of the sixth space 50, and a pneumatic nail gun 40 for fixing the cloth 39 is fixedly connected on a lower surface of the sliding rod 37, the first electromagnet 33 is electrically connected to the angle sensor 13.

In addition, in one embodiment, the power mechanism 802 includes a first motor 16 fixedly disposed in the upper surface of the bottom plate 10, the front and rear sides of the first motor 16 are power-connected to a third rotating shaft 17, a belt wheel space 19 is disposed inside the fixing plate 73, a fourth rotating shaft 23 extending out of the fixing plate 73 is rotatably connected to a side wall of the belt wheel space 19 opposite to the side wall, the fourth rotating shaft 23 and the third rotating shaft 17 are fixedly connected to belt wheels 18 symmetrically disposed in the belt wheel space 19, a belt 20 is connected between the belt wheels 18 on the two sides of the upper side, an opposite end of the fourth rotating shaft 23 is fixedly connected to a fourth gear 24, the upper side of the fourth gear 24 is engaged and connected to a fifth gear 25 fixedly connected to the hollow shaft 28, and the fixing rod 27 is fixedly connected to support rods 29 symmetrically disposed in the upper and lower directions, a fifth rotating shaft 31 is fixedly connected to the supporting rod 29 on the upper side, a sixth gear 30 is fixedly connected to the opposite end of the hollow shaft 28, a seventh gear 32 meshed with the sixth gear 30 is rotatably connected to the front end and the rear end of the fifth rotating shaft 31, and the seventh gear 32 can be meshed with the third gear 22.

In addition, in one embodiment, the switching mechanism 803 includes a hollow rod 67 fixedly connected to the lower side of the support rod 29 and having symmetrical front and back positions, a pressing rod 66 is slidably connected in the hollow rod 67, a fourth spring 61 is fixedly connected between the pressing rod 66 and an inner wall of the hollow rod 67, a first annular cavity 65 and a second annular cavity 58 are disposed in opposite side surfaces of the rotary table 12 and have symmetrical front and back positions, a third annular cavity 64 is disposed in an opposite side wall of the first annular cavity 65, a first annular ring 62 is slidably connected in the first annular cavity 65, a fifth spring 63 is fixedly connected between the first annular ring 62 and an opposite side wall of the third annular cavity 64, a second annular ring 59 for pressing the sixth gear 30 is slidably connected in the second annular cavity 58, a sixth spring 57 is fixedly connected between the second annular ring 59 and an opposite side wall of the second annular cavity 58, a first pull rope 60 is fixedly connected between the first circular ring 62 and the second circular ring 59, a second electromagnet 68 fixedly arranged on the lower supporting rod 29 is fixedly connected between the hollow rods 67, and the second electromagnet 68 is electrically connected with the angle sensor 13.

In addition, in one embodiment, a motor space 71 located inside the sliding rod 37 is disposed at the rear side of the sixth space 50, a second motor 72 is fixedly disposed in the bottom wall of the motor space 71, a sixth rotating shaft 70 is dynamically connected to the upper end of the second motor 72, a pulley 69 is fixedly connected to the sixth rotating shaft 70, a second pull rope 48 is fixedly connected between the pulley 69 and the rear surface of the cutting knife 41, and a controller 51 fixedly disposed in the upper surface of the fifth space 35 for controlling the opening and closing of the second motor 72, the first motor 16, and the air nail gun 40 is disposed below the second motor 72.

In the initial state, the sliding rod 37 is located at the uppermost side by the elastic force of the second spring 38, the cutting blade 41 is located at the rearmost side by the elastic force of the third spring 47, the clamping block 42 clamps the winding rod 45 by the elastic force of the first spring 43, the pressing rod 66 presses the first ring 62 by the elastic force of the fourth spring 61, the fifth spring 63 is compressed, and the second ring 59 is located at the innermost side of the second ring chamber 58 by the elastic force of the sixth spring 57.

When winding work is required, the first motor 16 is started, the third rotating shaft 17 rotates, the fourth rotating shaft 23 is driven to rotate through the belt wheel 18 and the belt 20, the fourth gear 24 rotates and drives the fifth gear 25 to rotate, the hollow shaft 28 rotates, and the rotating disc 12 is extruded by the extruding rod 66 and therefore cannot rotate;

the rotation of the hollow shaft 28 will drive the sixth gear 30 to rotate, and further the seventh gear 32 will rotate and drive the uppermost third gear 22 to rotate, and further the second gear 53 will be driven to rotate by the second rotating shaft 21, and further the first gear 54 will rotate and drive the first rotating shaft 55 to rotate, and further the rotating block 52 will rotate, and further the winding rod 45 will rotate and wind the cloth 39 on the upper side of the winding rod 45, and at the same time the cloth 39 will drive the drum 15 to rotate oppositely, and the angle sensor 13 will record the rotation angle and the number of turns of the drum 15;

when the length of the cloth wound on the winding rod 45 reaches the required length, the roller 15 also rotates by a corresponding angle, and the angle sensor 13 receives signals and controls the first electromagnet 33 and the second electromagnet 68 to be started for a period of time and then to be closed;

when the second electromagnet 68 is started, the second electromagnet 68 adsorbs the extrusion rod 66, so that the first ring 62 moves in the opposite direction under the elastic force of the fifth spring 63, so that the first pull rope 60 is tensioned, so that the second ring 59 moves out of the second ring cavity 58 and is extruded to the sixth gear 30 under the tensile force of the first pull rope 60, at this time, the turntable 12 rotates along with the sixth gear 30, when the turntable 12 rotates by 30 degrees, the second electromagnet 68 is just powered off, so that the turntable 12 does not rotate any more, at this time, the wound winding rod 45 rotates left, a new winding rod 45 moves to the uppermost side, and meanwhile, the seventh gear 32 is also separated from the uppermost third gear 22, is meshed with the right side, and moves to the uppermost third gear 22;

then when the first electromagnet 33 is started, the first electromagnet 33 repels the sliding rod 37 and moves the sliding rod 37 downwards, so that the controller 51 is extruded, so that the controller 51 controls the first motor 16 to be closed and the second motor 72 to be opened, meanwhile, the air nail gun 40 is started, when the first motor 16 is closed, the third gear 22 does not rotate any more, the winding rod 45 does not rotate any more, then the air nail gun 40 ejects nails and nails the cloth 39 on a new winding rod 45, meanwhile, the cutting knife 41 cuts the cloth 39, and when the second motor 72 is started, the sixth rotating shaft 70 is driven to rotate, so that the pulley 69 rotates and tensions the second pull rope 48, further, the cutting knife 41 moves backwards under the tension of the second pull rope 48 to realize complete cutting of the cloth, and then the first electromagnet 33 is powered off;

at this time, the worker can take the winding rod 45 which is wound completely and replace the winding rod 45 which is not wound with the cloth 39;

when the first electromagnet 33 is powered off, the sliding rod 37 will move upward under the elastic force of the second spring 38, and the controller 51 will not be squeezed any more, and the second motor 72 will be turned off and the first motor 16 will be turned on again, and at the same time the cutting knife 41 will move to the foremost side again under the elastic force of the third spring 47, completing one winding operation and beginning the next operation.

The invention has the beneficial effects that: the winding work of realization to the cloth that can be full-automatic to can realize the control to winding length through angle sensor, and the winding finishes the back can be automatic switch over and begin the winding of second round, the staff only need change the winding pole can, work efficiency is high, low in labor strength, easy operation uses convenience very, is worth wideling popularize.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.