Moisturizing pad winding equipment capable of ensuring uniform distribution of water-retaining agent
Technical Field
The invention relates to the field of moisturizing pads, in particular to a moisturizing pad rolling device capable of ensuring uniform distribution of a water-retaining agent.
Background
The seed that has passed the vernalization and handled when the seedbed is grown seedlings, need cover the moisturizing pad for the seedbed and moisturize, general moisturizing pad is for straw mat usually, and ordinary straw mat moisturizing ability is relatively poor, need water every day, and the water consumption is big, so has a novel moisturizing pad, last moisturizing layer, middle moisturizing layer, lower moisturizing layer that its goes up to setting gradually down, goes up moisturizing layer and moisturizing layer down and is straw mat or mat grass pad, and middle moisturizing layer is for filling the cushion form pocket that has the water-retaining agent.
The seed unearthing condition needs to be regularly observed, a worker needs to roll the moisturizing pad in the observation process, the labor intensity of the worker is high, the inside of the moisturizing pad is provided with the mat-shaped mesh bag filled with the granular water-retaining agent, the granular water-retaining agent can be extruded to the part which is not rolled in the rolling process of the worker, so that the granular water-retaining agent in the mat-shaped mesh bag after rolling becomes uneven, the moisturizing performance after subsequent unfolding is influenced, in addition, after the moisturizing pad is used for a long time, the straw of the straw mat on the upper part and the lower part can be locally stacked, and the moisturizing performance of the moisturizing pad is also reduced.
Disclosure of Invention
In order to overcome the defects that the seed unearthing condition needs to be regularly observed, a worker needs to roll the moisturizing pad in the observation process, the labor intensity of the worker is high, the inside of the moisturizing pad is provided with the mat-shaped mesh bag filled with the granular water-retaining agent, and the granular water-retaining agent can be extruded to the part which is not rolled in the rolling process of the worker, so that the granular water-retaining agent in the rolled mat-shaped mesh bag becomes unevenly distributed, and the moisturizing performance after subsequent unfolding is influenced, the invention provides the moisturizing pad rolling device capable of ensuring the uniform distribution of the water-retaining agent.
The technical scheme is as follows: a moisturizing pad rolling device capable of ensuring uniform distribution of a water-retaining agent comprises a moving wheel, a first mounting plate, a handle, a rolling unit and an extrusion unit; the tops of the four moving wheels are connected with a first mounting plate; the right part of the upper side of the first mounting plate is connected with a handle; the upper side of the first mounting plate is connected with a winding unit, the winding unit is positioned on the left side of the handle, and the winding unit is used for winding the moisturizing pad; the right part of the upper side of the first mounting plate is connected with an extrusion unit, the extrusion unit is positioned on the left side of the rolling unit, and the extrusion unit is used for gathering the water-retaining agent in the cushion-shaped net bag locally.
Further, the middle part of the first mounting plate is provided with a through groove for passing through the moisturizing pad.
Further, the winding unit comprises a first mounting frame, a second mounting frame, a first transmission shaft, a first gear, a winding roller, a second mounting plate, a first spring, a third mounting frame, a first electric slide rail, a first electric slide block, a third mounting plate, a hook, a motor and a pressing plate; the right part of the upper side of the first mounting plate is fixedly connected with a first mounting frame and a second mounting frame, and the first mounting frame is positioned behind the second mounting frame; the right part of the upper side of the first mounting plate is fixedly connected with a second mounting plate, the second mounting plate is positioned on the right of the first mounting plate and the second mounting plate, and the second mounting plate is positioned on the left of the handle; the front part of the upper side of the first mounting plate is fixedly connected with a third mounting frame, and the third mounting frame is positioned on the left of the second mounting frame; the left side of the first mounting frame is fixedly connected with a motor; the output shaft of the motor is fixedly connected with a first transmission shaft; the front part of the first transmission shaft is rotationally connected with the second mounting rack; the outer surface of the first transmission shaft is fixedly connected with a first gear and a winding roller, and the winding roller is positioned in front of the first gear; the first gear is connected with the extrusion unit; the left side of the second mounting plate is fixedly connected with three first springs which are arranged at equal intervals; the left ends of the three first springs are fixedly connected with a pressure plate, and the pressure plate is positioned on the right side of the winding roller; a first electric slide rail is fixedly connected to the upper side of the third mounting rack; the first electric slide rail is connected with a first electric slide block in a sliding manner; the upper side of the first electric sliding block is fixedly connected with a third mounting plate; the rear part of the right side of the third mounting plate is fixedly connected with a hook.
Further, the front portion and the rear portion of the winding roller are provided with annular separation blades for preventing the moisture-preserving pad from shifting forwards and backwards during winding.
Further, the extrusion unit comprises a fourth mounting plate, a fifth mounting plate, a straight slide rail, a straight slide block, a second gear, a first wedge-shaped block, a second spring, a second electric slide rail, a second electric slide block, a fourth mounting frame, a third spring, a first arc-shaped block, a second transmission shaft, a second wedge-shaped block, a third gear, a second arc-shaped block, a third transmission shaft and a lug; the right part of the upper side of the first mounting plate is fixedly connected with a fourth mounting plate and a fifth mounting plate, and the fourth mounting plate is positioned on the right of the fifth mounting plate; a straight slide rail is fixedly connected to the lower side of the fourth mounting plate; a straight sliding block is connected in the straight sliding rail in a sliding way; the lower part of the straight sliding block is connected with a second gear through a rotating shaft; the second gear is meshed with the first gear; the rear side of the straight sliding block is fixedly connected with a second spring; the rear part of the left side of the straight sliding block is fixedly connected with a first wedge-shaped block; the right part of the second spring is fixedly connected with the fourth mounting plate; two second electric slide rails are fixedly connected to the right side of the fifth mounting plate and are symmetrically arranged; a second electric slide block is respectively connected in the two second electric slide rails in a sliding manner; the right sides of the two second electric sliding blocks are respectively and fixedly connected with a fourth mounting rack; the rear parts of the right sides of the two fourth mounting frames are fixedly connected with a third spring respectively; the right parts of the two third springs are fixedly connected with a first arc-shaped block respectively; the right parts of the two fourth mounting frames are respectively and rotatably connected with a second transmission shaft, and the second transmission shafts are positioned on the right side of the first arc-shaped blocks; a second wedge-shaped block is fixedly connected to the right part of the second transmission shaft above the first transmission shaft; the rear parts of the two second transmission shafts are respectively and fixedly connected with a third gear; the right parts of the two second transmission shafts are fixedly connected with a second arc-shaped block respectively, and the two second arc-shaped blocks are positioned in front of the two third gears; the two second transmission shafts are fixedly connected with a third transmission shaft respectively, and the two third transmission shafts are positioned in front of the second arc-shaped block; the outer surfaces of the two third transmission shafts are fixedly connected with a plurality of protruding pieces respectively, and the protruding pieces are arranged side by side.
Furthermore, the end part of the convex piece is arranged into an arc shape, so that the straw mat can be conveniently penetrated, and the cushion-shaped mesh bag can be prevented from being broken.
Further, the first wedge-shaped block and the second wedge-shaped block are both arc-shaped and used for driving the second wedge-shaped block to move forwards when the first wedge-shaped block rotates.
Furthermore, the device also comprises a carding unit; the front part of the upper side of the first mounting plate is connected with a carding unit; the carding unit comprises a fifth mounting frame and a carding assembly; two fifth mounting frames are fixedly connected to the upper side of the first mounting plate and are symmetrically arranged; two carding assemblies are connected in the two fifth mounting frames and are arranged up and down symmetrically.
Furthermore, the lower carding assembly comprises a third electric slide rail, a third electric slide block, a sixth mounting plate, a fourth transmission shaft and a carding brush; the inner lower sides of the two fifth mounting frames are respectively and fixedly connected with a third electric slide rail; the two third electric sliding rails are respectively connected with a third electric sliding block in a sliding manner; the upper sides of the two third electric sliding blocks are respectively and fixedly connected with a sixth mounting plate; the opposite sides of the two sixth mounting plates are rotatably connected with a fourth transmission shaft; the outer surface of the fourth transmission shaft is fixedly connected with a combing brush.
Further, brush needles are arranged on the surface of the carding brush and used for carding the accumulated straws uniformly.
The beneficial effects are that: the invention realizes the rolling of the moisture-preserving mat, prevents the uneven distribution of the particle water-preserving agent after rolling by locally extruding the particle water-preserving agent in the mat-shaped net bag in advance during the rolling process, then unfolds the moisture-preserving mat after observation, combs the straw mat on the upper and lower parts, and combs the accumulated straws evenly.
Drawings
Fig. 1 is a schematic perspective view of a first rolling device for a moisture-retaining mat according to the present invention, which can ensure uniform distribution of a water-retaining agent;
FIG. 2 is a schematic diagram of a second three-dimensional structure of a rolling device of a moisturizing pad for ensuring uniform distribution of a water-retaining agent according to the present invention;
FIG. 3 is a top view of a rolling device of the moisture-retaining mat of the present invention for ensuring uniform distribution of water-retaining agents;
FIG. 4 is a schematic view of a partial three-dimensional structure of a moisture-retaining mat rolling device capable of ensuring uniform distribution of a water-retaining agent according to the present invention;
FIG. 5 is a schematic perspective view of a winding unit of the moisture-retaining mat winding device of the present invention for ensuring uniform distribution of water-retaining agents;
FIG. 6 is a schematic view of a partial structure of a rolling unit of the rolling device for a moisture-retaining mat according to the present invention, wherein the rolling device can ensure uniform distribution of water-retaining agents;
FIG. 7 is a schematic perspective partial structure view of an extrusion unit of a rolling device for a moisture-retaining mat according to the present invention, which can ensure uniform distribution of a water-retaining agent;
FIG. 8 is a schematic view of the working state of the pressing unit of the rolling device of the moisturizing pad of the present invention for ensuring the uniform distribution of the water-retaining agent;
FIG. 9 is a schematic perspective view of a carding unit of a rolling device for a moisture-retaining mat according to the present invention, which can ensure uniform distribution of water-retaining agents;
FIG. 10 is a schematic view of a partial three-dimensional structure of a carding unit of a rolling device for a moisture-retaining mat according to the present invention, which can ensure uniform distribution of a water-retaining agent.
Reference numerals: 1_ running wheel, 2_ first mounting plate, 3_ handle, 201_ first mounting block, 202_ second mounting block, 203_ first drive shaft, 204_ first gear, 205_ wind-up roll, 206_ second mounting plate, 207_ first spring, 208_ third mounting block, 209_ first electric slide, 2010_ first electric slide, 2011_ third mounting plate, 2012_ hook, 2013_ motor, 2014_ press plate, 301_ fourth mounting plate, 302_ fifth mounting plate, 303_ straight slide, 304_ straight slide, 305_ second gear, 306_ first wedge, 307_ second spring, 308_ second electric slide, 309_ second electric slide, 3010_ fourth mounting block, 3011_ third spring, 3012_ first arc, 3013_ second drive shaft, 3014_ second wedge, 3015_ third gear, 3016_ second arc, 3017_ third drive shaft, 3017_ third tab, 3018_ fifth mounting block 401, 402_ third electric slide rail, 403_ third electric slide block, 404_ sixth mounting plate, 405_ fourth transmission shaft, 406_ combing brush.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Example 1
A moisturizing pad rolling device capable of ensuring uniform distribution of a water-retaining agent is shown in figures 1-8 and comprises a moving wheel 1, a first mounting plate 2, a handle 3, a rolling unit and an extrusion unit; the top parts of the four moving wheels 1 are connected with a first mounting plate 2; the right part of the upper side of the first mounting plate 2 is connected with a handle 3; the upper side of the first mounting plate 2 is connected with a winding unit which is positioned on the left of the handle 3; the right part of the upper side of the first mounting plate 2 is connected with an extrusion unit, and the extrusion unit is positioned at the left of the winding unit.
The middle part of the first mounting plate 2 is provided with a through groove for passing through the moisturizing pad.
The winding unit comprises a first mounting frame 201, a second mounting frame 202, a first transmission shaft 203, a first gear 204, a winding roller 205, a second mounting plate 206, a first spring 207, a third mounting frame 208, a first electric slide rail 209, a first electric slider 2010, a third mounting plate 2011, a hook 2012, a motor 2013 and a pressing plate 2014; a first mounting rack 201 and a second mounting rack 202 are connected to the right part of the upper side of the first mounting plate 2 through bolts, and the first mounting rack 201 is positioned behind the second mounting rack 202; a second mounting plate 206 is bolted to the right part of the upper side of the first mounting plate 2, the second mounting plate 206 is positioned to the right of the first mounting frame 201 and the second mounting frame 202, and the second mounting plate 206 is positioned to the left of the handle 3; a third mounting rack 208 is bolted on the front part of the upper side of the first mounting plate 2, and the third mounting rack 208 is positioned at the left of the second mounting rack 202; a motor 2013 is fixedly connected to the left side of the first mounting frame 201; the output shaft of the motor 2013 is fixedly connected with a first transmission shaft 203; the front part of the first transmission shaft 203 is rotatably connected with the second mounting rack 202; a first gear 204 and a winding roller 205 are fixedly connected to the outer surface of the first transmission shaft 203, and the winding roller 205 is positioned in front of the first gear 204; the first gear 204 is connected with the extrusion unit; three first springs 207 are fixedly connected to the left side of the second mounting plate 206, and the three first springs 207 are arranged at equal intervals; the left ends of the three first springs 207 are fixedly connected with a pressure plate 2014, and the pressure plate 2014 is positioned on the right side of the winding roller 205; a first electric slide rail 209 is connected to the upper side of the third mounting frame 208 through bolts; a first electric slide block 2010 is connected on the first electric slide rail 209 in a sliding way; a third mounting plate 2011 is connected to the upper side of the first electric slider 2010 through bolts; the right rear part of the third mounting plate 2011 is welded with a hook 2012.
The front and rear portions of the wind-up roll 205 are provided with an annular catch for preventing the moisture retention pad from shifting forward and backward when being wound.
The extrusion unit comprises a fourth mounting plate 301, a fifth mounting plate 302, a straight sliding rail 303, a straight sliding block 304, a second gear 305, a first wedge-shaped block 306, a second spring 307, a second electric sliding rail 308, a second electric sliding block 309, a fourth mounting frame 3010, a third spring 3011, a first arc-shaped block 3012, a second transmission shaft 3013, a second wedge-shaped block 3014, a third gear 3015, a second arc-shaped block 3016, a third transmission shaft 3017 and a lug 3018; a fourth mounting plate 301 and a fifth mounting plate 302 are bolted on the right part of the upper side of the first mounting plate 2, and the fourth mounting plate 301 is positioned on the right side of the fifth mounting plate 302; the lower side of the fourth mounting plate 301 is connected with a straight slide rail 303 through bolts; a straight sliding block 304 is connected in the straight sliding rail 303 in a sliding manner; the lower part of the straight sliding block 304 is connected with a second gear 305 through a rotating shaft; the second gear 305 is meshed with the first gear 204; the rear side of the straight sliding block 304 is fixedly connected with a second spring 307; a first wedge-shaped block 306 is welded at the rear part of the left side of the straight sliding block 304; the right part of the second spring 307 is fixedly connected with the fourth mounting plate 301; two second electric sliding rails 308 are connected to the right side of the fifth mounting plate 302 through bolts, and the two second electric sliding rails 308 are symmetrically arranged; a second electric sliding block 309 is connected in the two second electric sliding rails 308 in a sliding manner; a fourth mounting rack 3010 is fixedly connected to the right sides of the two second electric sliding blocks 309 respectively; the rear parts of the right sides of the two fourth mounting frames 3010 are fixedly connected with a third spring 3011 respectively; the right parts of the two third springs 3011 are fixedly connected with a first arc-shaped block 3012 respectively; the right parts of the two fourth mounting frames 3010 are respectively rotatably connected with a second transmission shaft 3013, and the second transmission shaft 3013 is positioned on the right side of the first arc-shaped block 3012; a second wedge-shaped block 3014 is fixedly connected to the right part of the second transmission shaft 3013; the rear parts of the two second transmission shafts 3013 are fixedly connected with a third gear 3015 respectively; the right parts of the two second transmission shafts 3013 are fixedly connected with a second arc-shaped block 3016 respectively, and the two second arc-shaped blocks 3016 are positioned in front of the two third gears 3015; the two second transmission shafts 3013 are fixedly connected with a third transmission shaft 3017 respectively, and the two third transmission shafts 3017 are located in front of the second arc-shaped block 3016; the outer surfaces of the two third transmission shafts 3017 are fixedly connected with a plurality of lugs 3018 respectively, and the lugs 3018 are arranged side by side.
The end of the tab 3018 is curved to facilitate the penetration of straw mat and prevent the breaking of the mat-shaped mesh bag.
The first wedge-shaped block 306 and the second wedge-shaped block 3014 are both arc-shaped and are used for driving the second wedge-shaped block 3014 to move forward when the first wedge-shaped block 306 rotates.
When the moisture-preserving mat winding device is in use, a worker pulls or pushes the moisture-preserving mat winding device capable of ensuring uniform distribution of water-retaining agents to the upper part of a seedbed through a handle 3, the moisture-preserving mat on the seedbed is just positioned below a through groove in the middle of a first mounting plate 2, when the moisture-preserving mat needs to be opened to observe the seed germination condition, the two clamping rings at one end of the moisture-preserving mat are manually buckled on the two clamping rings on a winding roller 205, the two clamping rings are used as references when the moisture-preserving mat goes forward and backward, then a starting motor 2013 is controlled to drive a first transmission shaft 203 to rotate anticlockwise, the first transmission shaft 203 drives a first gear 204 and the winding roller 205 to rotate, the winding roller 205 rotates to wind the moisture-preserving mat on the self, three first springs 207 in an initial state are in a compressed state, a pressing plate 2014 is tightly attached to the winding roller 205, so that the moisture-preserving mat can drive the pressing plate 2014 to move rightwards to further compress the three first springs 207, and the three first springs 207 in turn apply a leftward force to the pressing plate 2014, the pressing plate 2014 is used for pressing the moisturizing pad all the time when the moisturizing pad is rolled, so that the moisturizing pad is tightly rolled by the rolling roller 205; the inside of the moisture-preserving pad is provided with a mat-shaped mesh bag filled with granular water-preserving agents, the granular water-preserving agents are extruded to the non-rolled part in the rolling process, so that the water-preserving agents in the mat-shaped mesh bag after rolling become unevenly distributed, and the subsequent water-preserving performance of the mat-shaped mesh bag is affected, therefore, before the rolling process, two second electric slide rails 308 are controlled to start to drive two second electric slide blocks 309 and related parts to slide forwards until a third gear 3015 is meshed with a second gear 305, at the moment, two third transmission shafts 3017 are respectively positioned on the upper side and the lower side of the moisture-preserving pad, then a motor 2013 is controlled to start to drive a rolling roller 205 to rotate to start rolling the moisture-preserving pad, in the rolling process, a first gear 204 drives a third gear 3015 above the second gear 305 to rotate anticlockwise, a third gear 3015 above the rolling process drives a third gear 3015 below the rolling pad to rotate clockwise, and a third gear 3015 above the rolling roller to rotate anticlockwise to drive the second transmission shaft 3013 to rotate, the second wedge-shaped block 3014, the second arc-shaped block 3016 and the third transmission shaft 3017 rotate along with the rotation until the second arc-shaped block 3016 contacts with the first arc-shaped block 3012, the second arc-shaped block 3016 presses the first arc-shaped block 3012 to the left, so that the first arc-shaped block 3012 moves to the left to compress the third spring 3011, meanwhile, the second wedge-shaped block 3014 forces the first wedge-shaped block 306 to move forward in the rotation process, the first wedge-shaped block 306 drives the straight sliding block 304 to slide forward on the straight sliding rail 303, the second gear 305 slides along with the sliding, the straight sliding block 304 simultaneously stretches the second spring 307, so that the second gear 305 is separated from the third gear 3015, then the first arc-shaped block 3012 rebounds to push the second arc-shaped block 3016 due to the elastic force of the third spring 3011, the second arc-shaped block 3016 is pushed to drive the second transmission shaft 3013 to continue to rotate counterclockwise, at this time, the rotation speed of the second block 3013 is faster than the previous speed, that the rotation speed of the third transmission shaft 3017 is faster than that the rolling speed of the moisture retention pad, when the tabs 3018 of the third transmission shaft 3017 are rotated to contact with the upper surface of the moisturizing pad, the lug 3018 passes through the straw mat on the upper part of the moisturizing pad to contact with the internal cushion-shaped mesh bag, and similarly, the lug 3018 on the lower part rotates clockwise to pass through the straw mat on the lower part of the moisturizing pad to contact with the internal cushion-shaped mesh bag, the granular water-retaining agent in the cushion-shaped net bag is extruded in this way, so that the granular water-retaining agent at the extruded position moves rightwards for a short distance and then is accumulated, then the second gear 305 is again engaged with the third gear 3015 due to the elastic force of the second spring 307, then repeating the operation, so that the granular water-retaining agent in the cushion-shaped net bag is in interval stacking distribution, then when the rolled water-retaining agent is rolled by the rolling roller 205, the accumulated particle water-retaining agent is extruded to the concave part, so that the particle water-retaining agent in the rolled cushion-shaped net bag is uniformly distributed, and the subsequent water-retaining performance is not influenced; after the situation of seed germination is observed, when the moisturizing pad needs to be covered again, the first electric sliding rail 209 is controlled to be started to drive the first electric sliding block 2010 and the third installation plate 2011 connected with the first electric sliding rail 2010 to move towards the wind-up roll 205, the handle of the moisturizing pad is hung on the hook 2012 after the first electric sliding rail 209 is moved to a proper position, then the first electric sliding rail 209 is controlled to be started to drive the first electric sliding block 2010 to move back, the hook 2012 drives the moisturizing pad to be pulled out and unfolded from the wind-up roll 205, after the moisture-preserving pad is unfolded, two snap rings at one end of the moisturizing pad are manually taken down from the wind-up roll 205, the handle at the other end is taken down from the hook 2012, the moisturizing pad is covered on the seedbed again, and the moisture-preserving pad is wound and unfolded.
Example 2
On the basis of the embodiment 1, as shown in fig. 1 and fig. 9-10, the carding machine also comprises a carding unit; the front part of the upper side of the first mounting plate 2 is connected with a carding unit; the carding unit comprises a fifth mounting frame 401 and a carding assembly; two fifth mounting frames 401 are connected to the upper side of the first mounting plate 2 through bolts, and the two fifth mounting frames 401 are symmetrically arranged; two carding assemblies are connected in the two fifth mounting frames 401, and are arranged symmetrically up and down.
The carding assembly at the lower part comprises a third electric sliding rail 402, a third electric sliding block 403, a sixth mounting plate 404, a fourth transmission shaft 405 and a carding brush 406; the inner lower sides of the two fifth mounting frames 401 are respectively connected with a third electric slide rail 402 through bolts; a third electric sliding block 403 is respectively connected to the two third electric sliding rails 402 in a sliding manner; the upper sides of the two third electric sliding blocks 403 are fixedly connected with a sixth mounting plate 404 respectively; a fourth transmission shaft 405 is rotatably connected to the opposite sides of the two sixth mounting plates 404; a combing brush 406 is fixedly connected to the outer surface of the fourth transmission shaft 405.
The surface of the carding brush 406 is provided with brush needles for carding the piled straws uniformly.
After the moisturizing pad is used for a long time, straws of the straw mat at the upper part and the lower part are locally piled, so that the moisturizing performance of the moisturizing pad is reduced, after the moisturizing pad is unfolded, the two carding assemblies are controlled to be started to comb the straws of the straw mat at the upper part and the lower part, so that the straws are uniformly distributed again, and then the moisturizing pad is taken down and covered on the seedbed again; when the combing component below works, the third electric slide rail 402 is controlled to drive the third electric slide block 403 to reciprocate back and forth, the two third electric slide blocks 403 drive the two sixth mounting plates 404 to reciprocate back and forth, the two sixth mounting plates 404 drive the combing brush 406 to reciprocate back and forth through the fourth transmission shaft 405 to comb the straws of the grass mat at the lower part, the piled straws are combed and dispersed uniformly, when the brush needles on the combing brush 406 touch the suture lines of the grass mat, the combing brush 406 is forced to rotate and incline around the fourth transmission shaft 405, then the combing brush 406 can pass through the suture lines, a torsion spring is arranged inside the fourth transmission shaft 405, and after the combing brush 406 is separated from the suture lines, the torsion spring can be restored to be vertical to the state of the grass mat to continue the straw combing.
The technical principle of the embodiment of the present invention is described above in conjunction with the specific embodiments. The description is only intended to explain the principles of embodiments of the invention and should not be taken in any way as limiting the scope of the embodiments of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, and these embodiments will fall within the scope of the present invention.