阅读说明：本技术 一种改造型湿巾盖背面贴标用贴标机 (Labeling machine for labeling on back surface of reformed wet tissue cover ) 是由 史晓贤 徐艳峰 李建中 赵春海 刘尚晓 成怡 杨英霞 于 2019-10-30 设计创作，主要内容包括：本发明公开了一种改造型湿巾盖背面贴标用贴标机,包括输送机构、调节机构和升降机构,所述输送机构的后侧固定有背板,且背板的左下角正面安装有光纤接近开关,所述背板的左上角正面转动连接有标签轮,且标签轮的右侧设置有张紧轮,所述调节机构安装于张紧轮的后侧,且张紧轮的下方设置有导料轮,所述导料轮的下方安装有转轴,且转轴的右下角套接有分离板,所述标签轮的下方设置有回收轮,且回收轮的左端连接有第二减速器,所述第二减速器的左端安装有第二步进电机,所述升降机构安装于背板的后侧,且升降机构的上方连接有控制盒,所述分离板的右侧设置有压合机构。本发明可实现流水线贴标作业,不仅生产效率高,还大大减轻了工作人员的负担。(The invention discloses a labeling machine for labeling the back of a reformed wet tissue cover, which comprises a conveying mechanism, an adjusting mechanism and a lifting mechanism, wherein a back plate is fixed at the rear side of the conveying mechanism, and the front surface of the left lower corner of the back plate is provided with an optical fiber proximity switch, the front surface of the left upper corner of the back plate is rotationally connected with a label wheel, a tension wheel is arranged on the right side of the label wheel, the adjusting mechanism is arranged on the rear side of the tension wheel, a material guide wheel is arranged below the tension wheel, a rotating shaft is arranged below the material guide wheel, and the right lower corner of the rotating shaft is sleeved with a separating plate, a recovery wheel is arranged below the label wheel, the left end of the recovery wheel is connected with a second speed reducer, the left end of the second speed reducer is provided with a second stepping motor, the lifting mechanism is arranged at the rear side of the back plate, and the upper part of the lifting mechanism is connected with a control box, and the right side of the separation plate is provided with a pressing mechanism. The invention can realize the assembly line labeling operation, not only has high production efficiency, but also greatly lightens the burden of workers.)

1. The utility model provides a modification is wet piece of cloth lid back labeller for mark, includes conveying mechanism (1), adjustment mechanism (6) and elevating system (11), its characterized in that: the rear side of the conveying mechanism (1) is fixed with a back plate (2), the lower left corner of the back plate (2) is provided with an optical fiber proximity switch (3) in front, the upper left corner of the back plate (2) is connected with a label wheel (4) in front in a rotating mode, the right side of the label wheel (4) is provided with a tension wheel (5), the adjusting mechanism (6) is installed on the rear side of the tension wheel (5), a material guide wheel (7) is arranged below the tension wheel (5), a rotating shaft (8) is installed below the material guide wheel (7), a separating plate (9) is sleeved on the lower right corner of the rotating shaft (8), a recovery wheel (10) is arranged below the label wheel (4), the left end of the recovery wheel (10) is connected with a second speed reducer (14), the left end of the second speed reducer (14) is provided with a second step-feeding motor (15), and the lifting mechanism (11) is installed on the rear side of, and a control box (12) is connected above the lifting mechanism (11), and a pressing mechanism (13) is arranged on the right side of the separation plate (9).

2. The labeling machine for labeling the back surface of the reformed wet towel cover according to claim 1, which is characterized in that: conveying mechanism (1) is including changeing roller (101), conveyer belt (102), location dog (103), first reduction gear (104) and first step motor (105), and changes the outside of roller (101) and be connected with conveyer belt (102) to the external fixed surface of conveyer belt (102) has location dog (103), the left end of changeing roller (101) is connected with first reduction gear (104), and first step motor (105) are installed to the left end of first reduction gear (104).

3. The labeling machine for labeling the back surface of the reformed wet towel cover according to claim 2, which is characterized in that: the positioning stop blocks (103) are equidistantly distributed on the outer surface of the conveying belt (102), the outer wall of the rotating roller (101) is tightly attached to the inner surface of the conveying belt (102), and the rotating roller (101) and the conveying belt (102) are matched with each other to form a rotating structure.

4. The labeling machine for labeling the back surface of the reformed wet towel cover according to claim 1, which is characterized in that: adjustment mechanism (6) are including connecting rod (601), slider (602) and slide rail (603), and the rear side of connecting rod (601) is fixed with slider (602) to the inside sliding connection of slider (602) has slide rail (603), and the junction of slider (602) and slide rail (603) has run through the bolt simultaneously.

5. The labeling machine for labeling the back surface of the reformed wet towel cover according to claim 1, which is characterized in that: elevating system (11) include loop bar (1101), telescopic link (1102) and bull stick (1103), and the inside top of loop bar (1101) is connected with the one end of telescopic link (1102), and the other end of telescopic link (1102) is fixed with bull stick (1103), and the junction outside of telescopic link (1102) and loop bar (1101) has run through the bolt simultaneously.

6. The labeling machine for labeling the back surface of the reformed wet towel cover according to claim 1, which is characterized in that: the control box (12) comprises a protective shell (1201), a touch display screen (1202), a programmable controller (1203) and a base (1204), the touch display screen (1202) is inlaid in the outer wall of the protective shell (1201), the programmable controller (1203) is installed inside the protective shell (1201), and the base (1204) is fixed on the outer wall of the right side of the protective shell (1201).

7. The labeling machine for labeling the back surface of the reformed wet towel cover according to claim 6, which is characterized in that: the inner wall of base (1204) closely laminates with the outer wall of bull (1103), and cooperatees each other between base (1204) and bull (1103) and constitutes revolution mechanic to optic fibre proximity switch (3) are connected with the input of programmable controller (1203) through the wire, and the output of programmable controller (1203) is connected with first step motor (105) and second step motor (15) through the wire.

8. The labeling machine for labeling the back surface of the reformed wet towel cover according to claim 1, which is characterized in that: the pressing mechanism (13) comprises a fixing block (1301), a screw rod (1302), a handle (1303) and a pressing brush (1304), the screw rod (1302) penetrates through the fixing block (1301), the handle (1303) is installed at the upper end of the screw rod (1302), and the pressing brush (1304) is connected to the lower end of the screw rod (1302).

9. The labeling machine for labeling the back surface of the reformed wet towel cover according to claim 8, wherein: the inner wall of the fixed block (1301) and the outer wall of the screw rod (1302) are both provided with threads, the sizes of the threads between the fixed block (1301) and the screw rod (1302) are identical, and the pressing brush (1304) is made of soft materials.

Technical Field

The invention relates to the technical field of product external packaging, in particular to a labeling machine for labeling the back surface of a modified wet tissue cover.

Background

Wet wipes are moist paper towels used to wipe skin. Wet wipes on the market can be roughly divided into two categories: one is that the skin care product is sterilized but can not sterilize other articles, contains skin care components and can only be used for moistening and maintaining the skin; the other type is a disinfection wet tissue which not only can be used for disinfecting, but also can be used for disinfecting other articles, and can be used for disinfecting or sterilizing skin scratches, scratches and the like. Wet piece of cloth generally can pack in the sack that can moisturize for a long time, and the shape of lid is often made to the opening part of wet piece of cloth sack, not only is convenient for open the use, also is convenient for the later stage secondary seal, when carrying out the extranal packing operation in the later stage, generally can paste the label on the lid of wet piece of cloth, and the label is the brief sign that is used for information such as the name of the article, weight, volume, usage, along with the development of scientific and technological, can realize automatic streamlined production now for product pasting label.

However, the labeler in the current market is not convenient for labeling the inside of the wet tissue cover, and manually labeling, not only is the production efficiency low, but also the burden of workers is greatly enhanced, and the existing labeler is in the use process, the degree of tightness of a label strip and the height and the angle of a control box are not convenient to adjust, the use is inconvenient, in addition, the angle of a label separating plate is not convenient to adjust according to the actual labeling condition, and the height of a press brush is not a problem, and therefore, the labeler for labeling the back of the reformed wet tissue cover with higher practicability is provided.

Disclosure of Invention

The invention aims to provide a labeling machine for labeling the back of a reformed wet tissue cover, which solves the problems that the existing labeling machine in the current market is inconvenient to label the inside of the wet tissue cover and manually label, the production efficiency is low, the burden of workers is greatly enhanced, the tightness degree of a label strip and the height and angle of a control box are inconvenient to adjust in the use process of the existing labeling machine, the use is inconvenient, and in addition, the angle of a label separating plate and the height of a press brush are inconvenient to adjust according to the actual labeling condition.

In order to achieve the purpose, the invention provides the following technical scheme: a labeler for labeling the back surface of a modified wet tissue cover comprises a conveying mechanism, an adjusting mechanism and a lifting mechanism, wherein a back plate is fixed at the rear side of the conveying mechanism, and the front surface of the left lower corner of the back plate is provided with an optical fiber proximity switch, the front surface of the left upper corner of the back plate is rotationally connected with a label wheel, a tension wheel is arranged on the right side of the label wheel, the adjusting mechanism is arranged on the rear side of the tension wheel, a material guide wheel is arranged below the tension wheel, a rotating shaft is arranged below the material guide wheel, and the right lower corner of the rotating shaft is sleeved with a separating plate, a recovery wheel is arranged below the label wheel, the left end of the recovery wheel is connected with a second speed reducer, the left end of the second speed reducer is provided with a second stepping motor, the lifting mechanism is arranged at the rear side of the back plate, and the upper part of the lifting mechanism is connected with a control box, and the right side of the separation plate is provided with a pressing mechanism.

Preferably, conveying mechanism is including changeing roller, conveyer belt, location dog, first reduction gear and first step motor, and the outside of changeing the roller is connected with the conveyer belt to the external fixed surface of conveyer belt has the location dog, the left end of changeing the roller is connected with first reduction gear, and first step motor is installed to the left end of first reduction gear.

Preferably, the location dog equidistance distributes in the surface of conveyer belt, and the outer wall of changeing the roller closely laminates with the internal surface of conveyer belt to it constitutes revolution mechanic to change to cooperate each other between roller and the conveyer belt.

Preferably, the adjusting mechanism comprises a connecting rod, a sliding block and a sliding rail, the sliding block is fixed on the rear side of the connecting rod, the sliding block is connected with the sliding rail in a sliding mode, and meanwhile a bolt penetrates through the connecting position of the sliding block and the sliding rail.

Preferably, elevating system includes loop bar, telescopic link and bull stick, and the inside top of loop bar is connected with the one end of telescopic link to the other end of telescopic link is fixed with the bull stick, and the bolt has been run through in the junction outside of telescopic link and loop bar simultaneously.

Preferably, the control box includes protective housing, touch-control display screen, programmable controller and base, and the outer wall of protective housing inlays and has the touch-control display screen, the internally mounted of protective housing has programmable controller, and the right side outer wall of protective housing is fixed with the base.

Preferably, the inner wall of base and the outer wall of bull stick closely laminate, and cooperate each other between base and the bull stick and constitute revolution mechanic to optic fibre proximity switch is connected with programmable controller's input through the wire, and programmable controller's output is connected with first step motor and second step motor through the wire.

Preferably, the pressing mechanism comprises a fixed block, a screw rod, a handle and a pressing brush, the screw rod penetrates through the fixed block, the handle is installed at the upper end of the screw rod, and the lower end of the screw rod is connected with the pressing brush.

Preferably, the inner wall of the fixed block and the outer wall of the screw rod are both provided with threads, the sizes of the threads between the fixed block and the screw rod are identical, and the press-fit brush is made of soft materials.

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

1. the first stepping motor can decelerate under the action of the first speed reducer and can drive the rotating roller to rotate, and the rotating roller can drive the conveying belt to rotate, so that the wet tissue cover can move at a constant speed along with the movement of the conveying belt, and the operation of matching with the main body of the labeling machine is facilitated;

2. the sliding block and the sliding rail in the adjusting mechanism can slide mutually so as to drive the tensioning wheel to move relative to the back plate, so that the tightness of the label belt can be adjusted, and the loop bar and the telescopic bar in the lifting mechanism can be mutually telescopic so as to adjust the height of the control box, so that the height position of the control box is more suitable for being operated by workers, and convenience is brought to the operation of different workers;

3. the programmable controller arranged in the control box can be programmed to be conveniently matched with the conveying mechanism for use, meanwhile, the programmable controller can receive information detected by the optical fiber proximity switch, and meanwhile, the programmable controller can control the starting and stopping of the first stepping motor and the second stepping motor so as to level the moving speed of the label and the moving speed of the wet tissue cover, thereby realizing the assembly line labeling operation;

4. the invention has high production efficiency, greatly reduces the burden of workers, can be used for touch screen control by the whole control box through the touch display screen, is more convenient to use, and can swing left and right by utilizing the rotation action between the base and the rotating rod, so that the horizontal angle of the control box is adjusted, and the observation and the operation of a user are facilitated;

5. the position of the pressing brush is adjusted according to actual production requirements, the pressing brush can be enabled to smoothly press the label and the wet tissue cover, the label adhering effect is effectively improved, the installation angle of the separating plate can be adjusted, the separating plate can be adjusted to the optimal separating angle according to the actual label adhering condition, the label paper and the label tape can be separated easily, and the rotating shaft and the separating plate are fixed through the bolts.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of a partial structure of the conveying mechanism of the present invention;

FIG. 3 is a schematic top view of the tensioner and adjustment mechanism assembly of the present invention;

FIG. 4 is a side view of the lifting mechanism and the control box of the present invention;

fig. 5 is a schematic view of the internal structure of the pressing mechanism according to the present invention.

In the figure: 1. a conveying mechanism; 101. rotating the roller; 102. a conveyor belt; 103. positioning a stop block; 104. a first decelerator; 105. a first stepper motor; 2. a back plate; 3. an optical fiber proximity switch; 4. a label wheel; 5. a tension wheel; 6. an adjustment mechanism; 601. a connecting rod; 602. a slider; 603. a slide rail; 7. a material guide wheel; 8. a rotating shaft; 9. a separation plate; 10. a recovery wheel; 11. a lifting mechanism; 1101. a loop bar; 1102. a telescopic rod; 1103. a rotating rod; 12. a control box; 1201. a protective shell; 1202. a touch display screen; 1203. a programmable controller; 1204. a base; 13. a pressing mechanism; 1301. a fixed block; 1302. a screw; 1303. a handle; 1304. pressing the hairbrush; 14. a second decelerator; 15. a second stepper motor.

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.

Referring to fig. 1-5, a labeling machine for labeling the back surface of a modified wet towel cover comprises a conveying mechanism 1, a rotating roller 101, a conveying belt 102, a positioning stopper 103, a first reducer 104, a first stepping motor 105, a back plate 2, an optical fiber proximity switch 3, a label wheel 4, a tension wheel 5, an adjusting mechanism 6, a connecting rod 601, a sliding block 602, a sliding rail 603, a guide wheel 7, a rotating shaft 8, a separating plate 9, a recovery wheel 10, a lifting mechanism 11, a loop bar 1101, a telescopic rod 1102, a rotating rod 1103, a control box 12, a protective shell 1201, a touch display screen 1202, a programmable controller 1203, a base 1204, a pressing mechanism 13, a fixed block 1301, a screw 1302, a handle 1303, a pressing brush 1304, a second reducer 14 and a second stepping motor 15, wherein the back plate 2 is fixed on the rear side of the conveying mechanism 1, the optical fiber proximity switch 3 is installed on the front surface of the left lower corner of the back plate 2, the front surface, a tension wheel 5 is arranged on the right side of the label wheel 4, an adjusting mechanism 6 is arranged on the rear side of the tension wheel 5, a guide wheel 7 is arranged below the tension wheel 5, a rotating shaft 8 is arranged below the guide wheel 7, a separating plate 9 is sleeved on the lower right corner of the rotating shaft 8, the rotating shaft 8 and the separating plate 9 can rotate, so that the installation angle of the separating plate 9 can be adjusted, the optimal separation angle can be adjusted according to the actual labeling condition, the label paper and the label tape can be separated easily, and the rotating shaft 8 and the separating plate 9 are fixed through bolts;

a recovery wheel 10 is arranged below the label wheel 4, a second speed reducer 14 is connected to the left end of the recovery wheel 10, a second stepping motor 15 is installed at the left end of the second speed reducer 14, an elevating mechanism 11 is installed at the rear side of the back plate 2, a control box 12 is connected above the elevating mechanism 11, a pressing mechanism 13 is arranged on the right side of the separating plate 9, the conveying mechanism 1 comprises a roller 101, a conveying belt 102, a positioning block 103, a first speed reducer 104 and a first stepping motor 105, the conveying belt 102 is connected to the outer side of the roller 101, the positioning block 103 is fixed to the outer surface of the conveying belt 102, the first speed reducer 104 is connected to the left end of the roller 101, the first stepping motor 105 is installed at the left end of the first speed reducer 104, the positioning block 103 is equidistantly distributed on the outer surface of the conveying belt 102, the outer wall of the roller 101 is tightly attached to the inner surface of the conveying belt 102, and the roller 101 and the conveying belt, the wet tissue cover is arranged close to the positioning stop block 103, the positioning stop blocks 103 are distributed at equal intervals, so that the wet tissue cover is reasonably spaced, the first stepping motor 105 can decelerate under the action of the first speed reducer 104 and can drive the rotary roller 101 to rotate, and the rotary roller 101 can drive the conveying belt 102 to rotate, so that the wet tissue cover can move at a constant speed along with the movement of the conveying belt 102, and the operation of the labeling machine main body is facilitated;

the adjusting mechanism 6 comprises a connecting rod 601, a slider 602 and a sliding rail 603, the slider 602 is fixed at the rear side of the connecting rod 601, the sliding rail 603 is connected to the inside of the slider 602 in a sliding manner, a bolt penetrates through the joint of the slider 602 and the sliding rail 603, the slider 602 and the sliding rail 603 in the adjusting mechanism 6 can slide relative to each other, so as to drive the tension pulley 5 to move relative to the backboard 2, thereby facilitating adjustment of tightness of the label tape, the lifting mechanism 11 comprises a loop bar 1101, a telescopic bar 1102 and a rotating bar 1103, one end of the telescopic bar 1102 is connected to the upper part of the interior of the loop bar 1101, the rotating bar 1103 is fixed at the other end of the telescopic bar 1102, a bolt penetrates through the outer side of the joint of the telescopic bar 1102 and the loop bar 1101, the loop bar 1101 and the telescopic bar 1102 in the lifting mechanism 11 can be mutually telescopic, so as to adjust the height of the control box 12, so that the, convenience is brought to the operation of different workers;

the control box 12 comprises a protective shell 1201, a touch display screen 1202, a programmable controller 1203 and a base 1204, the touch display screen 1202 is embedded in the outer wall of the protective shell 1201, the programmable controller 1203 is installed inside the protective shell 1201, the base 1204 is fixed on the outer wall of the right side of the protective shell 1201, the inner wall of the base 1204 is tightly attached to the outer wall of the rotating rod 1103, the base 1204 and the rotating rod 1103 are matched with each other to form a rotating structure, the optical fiber proximity switch 3 is connected with the input end of the programmable controller 1203 through a lead, the output end of the programmable controller 1203 is connected with the first stepping motor 105 and the second stepping motor 15 through leads, the programmable controller 1203 arranged inside the control box 12 can be programmed to be used in cooperation with the conveying mechanism 1, meanwhile, the programmable controller 1203 can receive information detected by the optical fiber proximity switch 3, and meanwhile the programmable controller 1203 can control the opening and closing of the first stepping motor 105 and the second stepping motor 15, the moving speed of the label and the advancing speed of the wet tissue cover are conveniently leveled, so that the assembly line labeling operation is realized, the production efficiency is high, the burden of workers is greatly reduced, meanwhile, the whole control box 12 can be controlled by a touch screen display 1202, the use is more convenient, the control box 12 can swing left and right by utilizing the rotating action between the base 1204 and the rotating rod 1103, the horizontal angle of the control box is adjusted, and the observation and the operation of a user are facilitated;

the pressing mechanism 13 comprises a fixing block 1301, a screw rod 1302, a handle 1303 and a pressing brush 1304, the screw rod 1302 penetrates through the fixing block 1301, the handle 1303 is installed at the upper end of the screw rod 1302, the lower end of the screw rod 1302 is connected with the pressing brush 1304, threads are formed in the inner wall of the fixing block 1301 and the outer wall of the screw rod 1302, the thread sizes between the fixing block 1301 and the screw rod 1302 are identical, the pressing brush 1304 is made of soft materials, the screw rod 1302 arranged in the pressing mechanism 13 can drive the pressing brush 1304 to move up and down when the fixing block 1301 rotates, the position of the pressing brush 1304 can be adjusted according to actual production needs, the pressing brush 1304 can be smoothly pressed to paste the label and the wet tissue cover, and accordingly the effect of labeling and bonding is effectively improved.

The working principle is as follows: for the labeler for labeling the back of the reformed wet tissue cover, firstly, a cover to be labeled is placed on the conveying belt 102 in a way of being inverted and close to the positioning stop block 103 in the conveying mechanism 1, then a label belt in the label wheel 4 is fixed on the outer surface of the recovery wheel 10 along the guide wheel 7, the tension wheel 5 and the separation plate 9, then, a bolt fixed with the adjusting mechanism 6 is firstly unscrewed, so that the slide block 602 and the slide rail 603 can slide, the slide block 602 is pulled up and down, the slide block 602 slides in the slide rail 603, the slide block 602 drives the tension wheel 5 to move up and down relative to the back plate 2 through the connecting rod 601, the tightness of the label belt is changed, after the adjustment is completed, the bolt is screwed down for fixing, then, the angle of the separation plate 9 is adjusted, the bolt fixed with the separation plate 9 and the rotating shaft 8 is firstly unscrewed, then, the, when the angle reaches a proper angle, the bolt is screwed down to fix;

then, the height of the pressing mechanism 13 is adjusted, the handle 1303 is held first, then the handle 1303 is rotated counterclockwise, the handle 1303 drives the screw 1302 to rotate, a thread action occurs between the screw 1302 and the fixing block 1301, so that the screw 1302 moves upward and simultaneously drives the pressing brush 1304 to move upward, otherwise, the same principle can be obtained, the handle 1303 is rotated clockwise, the pressing brush 1304 can be driven to move downward, then the height and the angle of the control box 12 are adjusted, the bolt fixing the lifting mechanism 11 is unscrewed first, then the control box 12 is pulled upward, the control box 12 drives the telescopic rod 1102 to extend out of the loop bar 1101, so that the position of the control box 12 is raised, then the bolt is screwed up to fix, the protective shell 1201 of the control box 12 is pulled left and right, the protective shell 1201 enables the base 1204 and the rotating rod 1103 to rotate, so that the control box 12 can rotate horizontally, and the angle;

after the whole device is powered on, the touch display screen 1202 is touched, the touch display screen 1202 can transfer data inside a programmable controller 1203 with the model of KR-0808-RS-5A, so that a first stepping motor 105 is started, the first stepping motor 105 works under the action of a first speed reducer 104 to decelerate, then a rotating roller 101 is driven to rotate clockwise, the rotating roller 101 drives a conveying belt 102 to rotate clockwise, the conveying belt 102 drives a wet tissue cover to move rightwards, when the cover passes below an optical fiber approach switch 3 with the model of GR410, the optical fiber approach switch 3 detects cover information and transmits the information to the programmable controller 1203, the programmable controller 1203 analyzes and processes the information, then a second stepping motor 15 is controlled to start, the second stepping motor 15 drives a recovery wheel 10 to rotate under the action of a second speed reducer 14, the recovery wheel 10 winds the label belt, thereby make the label area at guide wheel 7, the effect of separator 9 and take-up pulley 5 is pull down, make guide wheel 7 and take-up pulley 5 follow the removal of person's label area and rotate, finally make the label area on the label wheel 4 slowly scatter, when wet piece of cloth lid moves separator 9 below, because label paper and label area can take place the separation in separator 9's tip department, consequently label paper can fall on the lid, after the lid that is attached to label paper passes through pressfitting brush 1304, pressfitting brush 1304 takes place the friction with label paper, press down label paper slightly simultaneously, make label paper and lid bonding, accomplish the whole use of reforming type wet piece of cloth lid back labeling machine just so.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.