Extrusion equipment is used in production of environment-friendly food level cosmetics packaging hose

文档序号:1150306 发布日期:2020-09-15 浏览:9次 中文

阅读说明:本技术 一种环保型食品级化妆品包装软管生产用挤出设备 (Extrusion equipment is used in production of environment-friendly food level cosmetics packaging hose ) 是由 杭维 于 2020-05-25 设计创作,主要内容包括:本发明公开的一种环保型食品级化妆品包装软管生产用挤出设备,包括支撑架、螺杆注塑管、进料管、支架,所述支撑架的上端设置有支架,且支架的上端设置于加热器防护罩,所述支撑架的内侧壁伸出有进料管,且进料管的一端连接有螺杆注塑管,所述螺杆注塑管贯穿加热器防护罩。本发明所述的一种环保型食品级化妆品包装软管生产用挤出设备,利用蒸汽驱动结构、驱动连接结构、加热搅拌结构之间相互配合,蒸汽驱动结构设置的导热水箱、小型蒸汽涡轮发动机护罩罩内小型蒸汽透平发动机、实现搅拌杆的转动,利用蒸汽通入螺旋管对储料桶进行加热,从而实现储料桶的加热和搅拌,有效减少储料桶桶内物料的结块。(The invention discloses extrusion equipment for producing an environment-friendly food-grade cosmetic packaging hose, which comprises a support frame, a screw injection molding pipe, a feeding pipe and a support, wherein the support is arranged at the upper end of the support frame, the upper end of the support frame is arranged on a heater protection cover, the feeding pipe extends out of the inner side wall of the support frame, one end of the feeding pipe is connected with the screw injection molding pipe, and the screw injection molding pipe penetrates through the heater protection cover. According to the extrusion equipment for producing the environment-friendly food-grade cosmetic packaging hose, the steam driving structure, the driving connection structure and the heating and stirring structure are matched with one another, the heat conduction water tank arranged in the steam driving structure and the small steam turbine engine in the small steam turbine engine shield cover realize rotation of the stirring rod, and steam is introduced into the spiral pipe to heat the storage barrel, so that heating and stirring of the storage barrel are realized, and caking of materials in the storage barrel is effectively reduced.)

1. The utility model provides an extrusion equipment is used in production of environment-friendly food level cosmetics packaging hose which characterized in that: comprises a support frame (1), a screw injection molding pipe (6), a feeding pipe (7) and a bracket (9), wherein the bracket (9) is arranged at the upper end of the support frame (1), the upper end of the bracket (9) is arranged on the heater protective cover (2), the inner side wall of the supporting frame (1) extends out of the feeding pipe (7), and one end of the feeding pipe (7) is connected with a screw injection molding pipe (6), the screw injection molding pipe (6) penetrates through the heater protective cover (2), and the upper end of the heater protective cover (2) is connected with a steam driving structure (3), the upper part of the side wall of the steam driving structure (3) is provided with a driving connecting structure (4), the upper end of the feeding pipe (7) is connected with a heating and stirring structure (5), and the heating and stirring structure (5) is matched with the steam driving structure (3) and the driving connection structure (4), and a heater mounting groove (8) is formed in the upper end of the heater protective cover (2).

2. The extrusion equipment for producing the environment-friendly food-grade cosmetic packaging hose according to claim 1, wherein the extrusion equipment comprises: steam drive structure (3) are including small-size steam turbine engine guard shield (301), heat conduction water tank (302), steam advances pipe (303), inlet tube (304), first mount (305), second mount (306), and the lower extreme lateral wall department of small-size steam turbine engine guard shield (301) is provided with first mount (305), second mount (306), the inslot of heater mounting groove (8) is provided with heat conduction water tank (302), and the upper end of heat conduction water tank (302) is connected with steam advances pipe (303), inlet tube (304), the upper end that the steam advances pipe (303) is linked together with small-size steam turbine engine pipeline in small-size steam turbine engine guard shield (301) the cover, heat conduction water tank (302) are connected with outside structure of drawing water through inlet tube (304).

3. The extrusion equipment for producing the environment-friendly food-grade cosmetic packaging hose according to claim 2, wherein the extrusion equipment comprises: the first fixing frame (305) and the second fixing frame (306) are identical in structure, the first fixing frame (305) and the second fixing frame (306) are connected with the heater protection cover (2) through bolts, and the heat conducting water tank (302) is in contact with the heater in the heater protection cover (2).

4. The extrusion equipment for producing the environment-friendly food-grade cosmetic packaging hose according to claim 3, wherein the extrusion equipment comprises: the drive connection structure (4) comprises a fixing plate (401), a worm (402), a worm wheel (403), a through hole (404) and a bearing (405), wherein the through hole (404) is formed in the end face of the fixing plate (401), the bearing (405) is arranged in the through hole (404), the worm wheel (402) is arranged below the fixing plate (401), and the worm wheel (403) is meshed with the side wall of the worm wheel (402).

5. The extrusion equipment for producing the environment-friendly food-grade cosmetic packaging hose according to claim 4, wherein the extrusion equipment comprises: the small steam turbine engine driving shaft of the worm (402) penetrating through the small steam turbine engine shroud (301) is fixedly connected, and a gap is formed between the worm (402) and the penetrating section of the small steam turbine engine shroud (301).

6. The extrusion equipment for producing the environment-friendly food-grade cosmetic packaging hose according to claim 5, wherein the extrusion equipment comprises: heating stirring structure (5) includes storage vat (501), feed bin (502), spiral pipe (503), intake pipe (504), blast pipe (505), puddler (506), connector (507), and storage vat (501) upper end has seted up feed bin (502), spiral pipe (503) have been cup jointed to the lateral wall of storage vat (501), and the lower extreme mouth of pipe of spiral pipe (503) is connected with intake pipe (504), the upper end mouth of pipe of spiral pipe (503) is connected with blast pipe (505), be provided with puddler (506) in storage bin of storage vat (502), and the upper end of puddler (506) is connected with connector (507), the lower extreme of storage vat (501) passes through bolt and the sealed fixed connection of inlet pipe (7), and storage vat (501) are linked together with inlet pipe (7), welded connection between spiral pipe (503) and storage vat (501).

7. The extrusion equipment for producing the environment-friendly food-grade cosmetic packaging hose according to claim 6, wherein the extrusion equipment comprises: sealing connection between spiral pipe (503) and intake pipe (504), and sealing connection between spiral pipe (503) and blast pipe (505), spiral pipe (503) are linked together through intake pipe (504) and the small-size steam turbine engine gas outlet of small-size steam turbine engine guard shield (301), and spiral pipe (503) communicate with each other with the external world through blast pipe (505), turbine (403) are cup jointed to the upper end lateral wall of puddler (506), and turbine (403) and puddler (506) fixed connection, the hole is seted up to upper end through bearing (405) lower extreme of puddler (506), and the activity sets up between puddler (506) and bearing (405), connector (507) insert into puddler (506) upper end and set up the screw hole and be connected, and connector (507) restriction puddler (506) drop.

Technical Field

The invention relates to the field of screw extruders, in particular to extrusion equipment for producing an environment-friendly food-grade cosmetic packaging hose.

Background

The screw extruder is an automatic feeding device, is divided into a cold feeding screw extruder and a hot feeding screw extruder, and is used for extruding rubber semi-products and rubber products. The cold feeding screw extruder can feed rubber without hot refining, and the rubber is heated and plasticized through the actions of screw extrusion, shearing, stirring and the like and is continuously extruded from a die. The cold-feed extruder mainly comprises a screw, a machine barrel, a machine head, a feeding mechanism, a transmission device, a temperature control system and the like, wherein the length-diameter ratio of the screw of the cold-feed extruder is generally 8-18, extruded products are good in quality, a thermal refining machine is not required to be arranged, the thermal refining rubber needs to be fed into the thermal-feed screw extruder, the rubber is further plasticized through the actions of screw extrusion, shearing, stirring and the like, and the rubber is continuously extruded by an n-type extruder. Mainly comprises a screw, a machine barrel, a machine head, a feeding mechanism, a transmission device and the like. The length-diameter ratio of a screw of the hot-feed extruder is generally 4-6, the quality of an extruded product can meet the process requirement, a heat mixer needs to be arranged, a steam turbine is also called a steam turbine engine, the steam turbine is a rotary steam power device, high-temperature and high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, a rotor provided with blade rows rotates, and meanwhile, the rotor does work outwards. Steam turbines are the main equipment of modern thermal power plants, and are also used in the metallurgical industry, the chemical industry and ship power plants; in the process of producing the food-grade cosmetic packaging hose by using the screw extruder, the heater heats the screw injection molding pipe to generate waste heat, the waste heat is volatilized to cause waste, and the materials in the storage barrel are caked.

Disclosure of Invention

The invention mainly aims to provide extrusion equipment for producing an environment-friendly food-grade cosmetic packaging hose, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides an environment-friendly food level cosmetics packaging hose production is with extruding equipment, includes support frame, screw rod injection molding pipe, inlet pipe, support, the upper end of support frame is provided with the support, and the upper end of support sets up in the heater protection casing, the inside wall of support frame stretches out there is the inlet pipe, and the one end of inlet pipe is connected with the screw rod injection molding pipe, the screw rod injection molding pipe runs through the heater protection casing, and the upper end of heater protection casing is connected with the steam drive structure, the lateral wall upper portion of steam drive structure is provided with drive connection structure, the upper end of inlet pipe is connected with heating stirring structure, and heats stirring structure and steam drive structure, drive connection structure adaptation setting, the heater mounting groove has been.

Preferably, the steam drive structure includes small-size steam turbine engine guard shield, heat conduction water tank, steam advances pipe, inlet tube, first mount, second mount, and the lower extreme lateral wall department of small-size steam turbine engine guard shield is provided with first mount, second mount, the inslot of heater mounting groove is provided with heat conduction water tank, and the upper end of heat conduction water tank is connected with steam and advances pipe, inlet tube, the upper end that the steam advances the pipe is linked together with small-size steam turbine engine pipeline in the small-size steam turbine engine guard shield cover, heat conduction water tank is connected with outside structure of drawing water through the inlet tube.

Preferably, the first fixing frame and the second fixing frame are identical in structure and are connected with the heater protective cover through bolts, and the heat conducting water tank is in contact with the heater in the heater protective cover.

Preferably, the drive connection structure includes stationary blade, worm wheel, through-hole, bearing, and the through-hole has been seted up to the terminal surface of stationary blade, the downthehole bearing that is provided with of through-hole, the below of stationary blade is provided with the worm, and the lateral wall meshing of worm is connected with the worm wheel.

Preferably, the small steam turbine engine driving shaft of the worm penetrates through the small steam turbine engine shroud and is fixedly connected with the small steam turbine engine shroud penetrating section, and the worm and the small steam turbine engine shroud penetrating section are provided with a gap.

Preferably, the heating and stirring structure includes storage vat, feed bin, spiral pipe, intake pipe, blast pipe, puddler, connector, and the upper end of storage vat has seted up the feed bin, the spiral pipe has been cup jointed to the lateral wall of storage vat, and the lower extreme mouth of pipe of spiral pipe is connected with the intake pipe, the upper end mouth of pipe of spiral pipe is connected with the blast pipe, be provided with the puddler in the feed bin storehouse, and the upper end of puddler is connected with the connector, the lower extreme of storage vat passes through bolt and the sealed fixed connection of inlet pipe, and storage vat and inlet pipe are linked together, welded connection between spiral pipe and the storage vat.

Preferably, sealing connection between spiral pipe and the intake pipe, and sealing connection between spiral pipe and the blast pipe, the spiral pipe is linked together through the small-size steam turbine engine gas outlet of intake pipe with small-size steam turbine engine guard shield, and the spiral pipe communicates with each other with the external world through the blast pipe, the turbine is cup jointed to the upper end lateral wall of puddler, and turbine and puddler fixed connection, the upper end of puddler runs through the bearing lower extreme and sets up the hole, and the activity sets up between puddler and the bearing, the connector inserts into the puddler upper end and sets up the screw hole and be connected, and the connector restriction puddler drops.

Compared with the prior art, the invention has the following beneficial effects: this extrusion equipment is used in production of environment-friendly food level cosmetics packaging hose:

the steam driving structure, the driving connection structure and the heating and stirring structure are matched with each other, the heat conduction water tank arranged on the steam driving structure and the small steam turbine engine in the small steam turbine engine shield cover realize the rotation of the stirring rod, and the storage barrel is heated by introducing steam into the spiral pipe, so that the heating and stirring of the storage barrel are realized, and the caking of materials in the storage barrel is effectively reduced;

the whole extrusion equipment for producing the environment-friendly food-grade cosmetic packaging hose is simple in structure, convenient to operate and better in use effect compared with the traditional mode.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an extrusion device for producing an environment-friendly food-grade cosmetic packaging hose according to the present invention;

FIG. 2 is a schematic diagram showing a disassembled integral structure of an extrusion device for producing an environment-friendly food-grade cosmetic packaging hose according to the present invention;

FIG. 3 is a schematic structural diagram of a screw extruder of the extrusion equipment for producing the environment-friendly food-grade cosmetic packaging hose of the present invention;

FIG. 4 is a schematic diagram showing a disassembled steam-driven structure of an extrusion device for producing an environment-friendly food-grade cosmetic packaging hose according to the present invention;

FIG. 5 is a schematic diagram showing a disassembled driving connection structure of an extrusion device for producing an environment-friendly food-grade cosmetic packaging hose according to the present invention;

FIG. 6 is a schematic diagram showing the disassembly of the heating and stirring structure of the extrusion device for producing the environment-friendly food-grade cosmetic packaging hose according to the present invention.

In the figure: 1. a support frame; 2. a heater shield; 3. a steam driving structure; 301. a small steam turbine engine shroud; 302. a heat conducting water tank; 303. a steam inlet pipe; 304. a water inlet pipe; 305. a first fixing frame; 306. a second fixing frame; 4. a drive connection structure; 401. a fixing sheet; 402. a worm; 403. a turbine; 404. a through hole; 405. a bearing; 5. a heating and stirring structure; 501. a storage barrel; 502. a storage bin; 503. a spiral tube; 504. an air inlet pipe; 505. an exhaust pipe; 506. a stirring rod; 507. a connector; 6. screw injection molding of the tube; 7. a feed pipe; 8. a heater mounting groove; 9. and (4) a bracket.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-6, an extrusion device for producing an environment-friendly food-grade cosmetic packaging hose comprises a support frame 1, a screw injection molding pipe 6, a feeding pipe 7 and a support 9, wherein the support 9 is arranged at the upper end of the support frame 1, the upper end of the support 9 is arranged on a heater protection cover 2, the feeding pipe 7 extends out of the inner side wall of the support frame 1, one end of the feeding pipe 7 is connected with the screw injection molding pipe 6, the screw injection molding pipe 6 penetrates through the heater protection cover 2, the upper end of the heater protection cover 2 is connected with a steam driving structure 3, a driving connection structure 4 is arranged on the upper portion of the side wall of the steam driving structure 3, a heating and stirring structure 5 is connected to the upper end of the feeding pipe 7, the heating and stirring structure 5 is matched with the steam driving.

The steam driving structure 3 comprises a small-sized steam turbine engine shield 301, a heat conducting water tank 302, a steam inlet pipe 303, a water inlet pipe 304, a first fixing frame 305 and a second fixing frame 306, the side wall of the lower end of the small-sized steam turbine engine shield 301 is provided with the first fixing frame 305 and the second fixing frame 306, the heat conducting water tank 302 is arranged in the groove of the heater mounting groove 8, the upper end of the heat conducting water tank 302 is connected with the steam inlet pipe 303 and the water inlet pipe 304, the upper end of the steam inlet pipe 303 is communicated with a small-sized steam turbine engine pipeline in the small-sized steam turbine engine shield 301, and the heat conducting water tank 302 is connected with an external water pumping structure through the; the first fixing frame 305 and the second fixing frame 306 have the same structure, the first fixing frame 305 and the second fixing frame 306 are connected with the heater protection cover 2 through bolts, and the heat conducting water tank 302 is in contact with the heater in the heater protection cover 2; the driving connection structure 4 comprises a fixing plate 401, a worm 402, a worm gear 403, a through hole 404 and a bearing 405, wherein the through hole 404 is formed in the end face of the fixing plate 401, the bearing 405 is arranged in the through hole 404, the worm 402 is arranged below the fixing plate 401, and the side wall of the worm 402 is connected with the worm gear 403 in a meshed manner; a small steam turbine engine driving shaft of the worm 402 penetrating through the small steam turbine engine shroud 301 is fixedly connected, and a gap is formed between the worm 402 and the penetrating section of the small steam turbine engine shroud 301; the heating and stirring structure 5 comprises a storage barrel 501, a bin 502, a spiral pipe 503, an air inlet pipe 504, an exhaust pipe 505, a stirring rod 506 and a connector 507, the upper end of the storage barrel 501 is provided with the bin 502, the side wall of the storage barrel 501 is sleeved with the spiral pipe 503, the lower end pipe orifice of the spiral pipe 503 is connected with the air inlet pipe 504, the upper end pipe orifice of the spiral pipe 503 is connected with the exhaust pipe 505, the bin 502 is internally provided with the stirring rod 506, the upper end of the stirring rod 506 is connected with the connector 507, the lower end of the storage barrel 501 is fixedly connected with the feed pipe 7 in a sealing manner through a bolt, the storage barrel 501 is communicated with the feed; the spiral pipe 503 is connected with the air inlet pipe 504 in a sealing mode, the spiral pipe 503 is connected with the exhaust pipe 505 in a sealing mode, the spiral pipe 503 is communicated with an air outlet of a small steam turbine engine of the small steam turbine engine shield 301 through the air inlet pipe 504, the spiral pipe 503 is communicated with the outside through the exhaust pipe 505, the side wall of the upper end of the stirring rod 506 is sleeved with the turbine 403, the turbine 403 is fixedly connected with the stirring rod 506, the upper end of the stirring rod 506 penetrates through the lower end of the bearing 405 to be provided with a hole, the stirring rod 506 and the bearing 405 are movably arranged, the connecting head 507 is inserted into the upper end of the stirring rod 506 to be provided; utilize steam drive structure 3, drive connection structure 4, heat and stir and mutually support between the structure 5, the heat conduction water tank 302 that steam drive structure 3 set up, small-size steam turbine engine in the cover of small-size steam turbine engine guard shield 301, realize puddler 506's rotation, utilize steam to let in spiral pipe 503 and heat storage vat 501 to realize storage vat 501's heating and stirring, effectively reduce the caking of material in the storage vat 501 bucket.

It should be noted that, the invention is an extrusion device for producing an environment-friendly food-grade cosmetic packaging hose, when assembling a steam driving structure 3, a driving connection structure 4, a heating and stirring structure 5, a feeding pipe 7 and a heater protection cover 2, a lower end pipe opening of a threaded rod 503 arranged on the heating and stirring structure 5 is hermetically connected with an air inlet pipe 504, an upper end pipe opening of the threaded pipe 503 is hermetically connected with an exhaust pipe 505, a lower end of a storage barrel 501 contacts with an upper end flange of the feeding pipe 7, a lower end of the storage barrel 501 is fixedly connected with the feeding pipe 7 through threads, a sealing ring is arranged between the storage barrel 501 and the feeding pipe 7, the threaded pipe 503 is sleeved on the outer wall of the storage barrel 501, the threaded pipe 503 is welded and connected with the storage barrel 501, a small steam turbine engine is arranged in a cover of a small steam turbine engine protection cover 301, the edge of the upper end of the heat conducting water tank 302 is connected with a water inlet pipe 304, the water inlet pipe 304 is connected with an outer water pumping pipe, water is conveyed to the water inlet pipe 304 to inject water into the heat conducting water tank 302, the heat conducting water tank 302 is communicated with an external water inlet structure, a heater is arranged in a heater mounting groove 8 groove formed in the heater shield 2, the heater heats the screw injection pipe 6, the lower end of the heat conducting water tank 302 is inserted into the heater mounting groove 8 groove, the heat conducting water tank 302 is in contact with the heater arranged in the heater shield 2 cover, the heat conducting water tank 302 is heated by the waste heat of the heater, a steam inlet pipe 303 arranged at the upper end of the heat conducting water tank 302 is communicated with a small steam turbine engine arranged in the small steam turbine engine shield 301 cover, the side wall of a fixing plate 401 arranged in the driving connection structure 4 is in contact with the upper part of the side, the worm 402 penetrates through the small steam turbine engine shield 301 to be connected with a driving shaft of the small steam turbine engine, a hole is formed in the end face of a turbine 403 arranged on a driving connection structure 4 and is aligned with a stirring rod 506 arranged on a heating stirring structure 5 to be sleeved, the turbine 403 is fixedly connected with the stirring rod 506, the upper end of the stirring rod 506 is aligned with a through hole 404 formed in the end face of a fixing plate 401 to be inserted, a bearing 405 is sleeved on the rod head of the stirring rod 506, the bearing 405 is inserted into the through hole 404 formed in the fixing plate 401, the bearing 405 is fixedly connected with the fixing plate 401, the bearing 405 is movably sleeved with the stirring rod 506, a threaded hole is formed in the lower end of a connecting head 507 and is aligned with the upper end of the stirring rod 506, the connecting head 507 is connected with the stirring rod 506 through threads, therefore the fixing plate 401 is used for limiting the, the end face of the inclined plate of the first fixing frame 305 is provided with a threaded hole which is aligned with a threaded hole formed in the side wall of the heater protective cover 2, a bolt is inserted into the threaded hole formed in the end face of the inclined plate of the first fixing frame 305 to fixedly connect the first fixing frame 305 and the heater protective cover 2, the upper end of the first fixing frame 305 is provided with a threaded hole which is matched with the threaded hole formed in the lower end of the small-sized steam turbine engine protective cover 301, the first fixing frame 305 is fixedly connected with the small-sized steam turbine engine protective cover 301 by the bolt, the second fixing frame 306 and the first fixing frame 305 have the same structure, the second fixing frame 306 and the first fixing frame 305 support the small-sized steam turbine engine protective cover 301, the stirring rod 506 is inserted into the bin 502 formed in the storage barrel 501, the air inlet pipe 504 connected with the spiral pipe 503 is connected with the air, the exhaust pipe 505 is communicated with an external pipeline, when the steam preheating device is used, a heater in the heater shield 2 cover heats the screw injection pipe 6, the heat conduction water tank 302 is contacted with the heater, the heat conduction water tank 302 conducts heat to heat water in the tank, steam enters the small steam turbine engine through the steam inlet pipe 303, a driving shaft of the small steam turbine engine moves transversely to drive the worm 402 to move, the worm 402 drives the turbine 403 to rotate in the moving process, the turbine 403 is fixedly connected with the stirring rod 506, the stirring rod 506 rotates, the stirring rod 506 is movably connected with the fixing plate 401 through the bearing 405, steam sprayed out from the small steam turbine engine in the working process enters the air inlet pipe 504, the steam in the air inlet pipe 504 rises along the spiral pipe 503, the spiral pipe 503 is contacted with the storage barrel 501, the steam in the spiral pipe 503 transfers heat to the wall of the storage barrel 501, the wall of the storage, the material inside the bin 502 is prevented from caking, and the steam in the spiral pipe 503 is discharged through the exhaust pipe 505.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

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