阅读说明：本技术 一种智能物流封箱机 (Intelligent logistics box sealing machine ) 是由 胡红平 于 2021-09-13 设计创作，主要内容包括：本发明公开了一种智能物流封箱机,涉及物流设备技术领域,其结构包括其结构包括有机体、纸盒定位器、升降架、胶带粘贴装置、压盖器、纸盒输送机构,机体的顶部安装有纸盒输送机构,纸盒输送机构的上方设有纸盒定位器,纸盒定位器的上方还设有升降架,升降架与机体活动配合,升降架的顶部中间安装有胶带粘贴装置,胶带粘贴装置的一侧与压盖器相连接,本发明通过胶带切割刀和刮胶器的结合设置,在开始切割胶带时,胶带切割刀下降,刀壁与刮胶器上的刮除器体贴合,刮除器体将刀壁上的余胶刮起,胶带切割刀切割完毕后,下个纸箱将前后胶带压轮顶起带动胶带切割刀上升,胶带切割刀上的限位限位锯齿将刮除器顶起。(The invention discloses an intelligent logistics box sealing machine, relating to the technical field of logistics equipment, which structurally comprises a machine body, a paper box positioner, a lifting frame, a tape pasting device, a capping device and a paper box conveying mechanism, wherein the top of the machine body is provided with the paper box conveying mechanism, the paper box positioner is arranged above the paper box conveying mechanism, the lifting frame is also arranged above the paper box positioner and is movably matched with the machine body, the tape pasting device is arranged in the middle of the top of the lifting frame, one side of the tape pasting device is connected with the capping device, the invention adopts the combination arrangement of a tape cutter and a tape scraper, when the tape is cut, the tape cutter descends, the cutter wall is attached to a scraper body on the tape scraper, the scraper body scrapes the residual glue on the cutter wall, after the tape cutter finishes cutting, the next paper box jacks up a front tape pressing wheel and a rear tape pressing wheel to drive the tape cutter to ascend, the scraper is jacked up by the limiting and limiting saw teeth on the adhesive tape cutting knife.)

1. The utility model provides an intelligence commodity circulation case sealer, its structure includes organism (1), carton locator (2), crane (3), tape-stripping device (4), closing device (5), carton conveying mechanism (6) are installed at the top of organism (1), the top of carton conveying mechanism (6) is equipped with carton locator (2), the top of carton locator (2) still is equipped with crane (3), crane (3) and organism (1) clearance fit, install tape-stripping device (4) in the middle of the top of crane (3), one side of tape-stripping device (4) is connected with closing device (5), its characterized in that:

the adhesive tape sticking device (4) comprises a fixed shaft (41), a front adhesive tape pressing wheel assembly (42), a first connecting rod (43), an adhesive tape cutting mechanism (44), a second connecting rod (45), a rear adhesive tape pressing wheel assembly (46), a reset spring (47), a mounting frame (48) and an adhesive tape fixing frame (49), wherein the adhesive tape fixing frame (49) is arranged at the top of the mounting frame (48), the fixed shaft (41) is arranged above one side inside the mounting frame (48) and is connected with the mounting frame (48), the front adhesive tape pressing wheel assembly (42) is fixed on one side below the mounting frame (48), the front adhesive tape pressing wheel assembly (42) is connected with the adhesive tape cutting mechanism (44) through the first connecting rod (43), the adhesive tape cutting mechanism (44) is arranged below the second connecting rod (45), and the adhesive tape cutting mechanism (44) is positioned between the front adhesive tape pressing wheel assembly (42) and the rear adhesive tape pressing wheel assembly (46), preceding sticky tape pinch roller subassembly (42) are through No. two connecting rods (45) and back sticky tape pinch roller (46) clearance fit, reset spring (47) one end is connected with back sticky tape pinch roller (46), and the other end is connected in mounting bracket (48).

2. The intelligent logistics box sealing machine of claim 1, wherein: the adhesive tape cutting mechanism (44) comprises a gear (441), an adhesive tape cutting mechanism body (443), an adhesive scraper (444) and an adhesive tape cutting knife (445), wherein the gear (441) is arranged inside the adhesive tape cutting mechanism body (443), a circular ring opening (442) is formed in the adhesive tape cutting mechanism body (443), a long strip opening (446) which is movably matched with the adhesive tape cutting knife (445) is formed in one side of the adhesive tape cutting mechanism body (443), and the adhesive scraper (444) is arranged on two sides below the adhesive tape cutting knife (445).

3. The intelligent logistics box sealing machine of claim 2, wherein: the glue scraper (444) comprises a limiting groove (4441), a device body (4442) and a scraper (4443), wherein the limiting groove (4441) is formed in one side, facing the adhesive tape cutting knife (445), of the device body (4442), and the scraper (4443) is hinged to the limiting groove (4441).

4. The intelligent logistics box sealing machine of claim 3, wherein: the scraper (4443) is provided with a spring shaft (4444) matched with the scraper (4443), one end of the spring (4445) is connected with the spring shaft (4444), and the other end of the spring (4445) is connected with the limiting groove (4441).

5. The intelligent logistics box sealing machine as claimed in claim 3 or 4, wherein: scraper (4443) is including semicircle board (a), movable rod (b), scraper main part (c), scraper blade (d), stopper (f), connecting rod (g), scraper main part (c) inside is equipped with the opening and accomodates groove (e), the opening is accomodate inside semicircle board (a) that is equipped with of groove (e), semicircle board (a) links to each other with connecting rod (g), connecting rod (g) and spring shaft (4444) transition fit, spring shaft (4444) and movable rod (b) clearance fit, movable rod (b) and scraper blade (d) are articulated, one side that sticky tape cutting knife (445) was kept away from in movable rod (b) is equipped with stopper (f) be connected with movable rod (b).

6. The intelligent logistics box sealing machine of claim 2, wherein: the adhesive tape cutting knife (445) comprises a limiting sawtooth (445b), a spring (445c), a rack (445d) and a cutting knife (445e), the bottom of the rack (445d) is connected with the cutting knife (445e), open slots (445a) are respectively arranged on two sides of the cutting knife (445e), the open slots (445a) are connected to one end of the spring (445c), and the spring (445c) is connected with the limiting sawtooth (445 b).

Technical Field

The invention relates to the field of logistics equipment machinery, in particular to an intelligent logistics box sealing machine.

Background

The intelligent logistics utilizes an integrated intelligent technology, so that a logistics system can simulate human intelligence, has the capabilities of thinking, sensing, learning, reasoning and judging and automatically solving some problems in the logistics, and is intelligent in mass operation and decision-making in the logistics operation process; with logistics management as the core, realize the integration of links such as commodity circulation in-process transportation, storage, packing, loading and unloading and the layering of intelligent logistics system, it is especially important to pack a link at the commodity circulation in-process, need adopt packagine machine to pack the carton in the packing link and seal to this prevents that incasement portion article from dropping or damaged.

Present commodity circulation express delivery case sealer utilizes the carton conveying, the closing device is closed with the case lid, carry out seal packing to the carton through the sticky tape bonding, realize whole packing process through the sticky tape cutterbar with the sticky tape cutting, and after the cutter on the sticky tape cutterbar cuts many times, some glue on the sticky tape can be attached to on the sword wall, probably can make the sticky tape glue on the sword wall when adnexed surplus glue has been more, can't effectively cut the sticky tape, need the artifical surplus glue that strikes off on the sword wall, still need tear the sticky tape normal condition that resets with the sticky tape, influence the work efficiency that commodity circulation case sealer express delivery was sealed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an intelligent logistics box sealing machine to solve the problems that after a cutter on an adhesive tape cutter cuts for multiple times, some adhesive on an adhesive tape can be attached to a cutter wall, the adhesive tape can be adhered to the cutter wall when the attached excess adhesive is excessive, the adhesive tape cannot be effectively cut, the excess adhesive on the cutter wall needs to be manually scraped, the adhesive tape needs to be torn off and reset to be in a normal state, and the working efficiency of the logistics express delivery box sealing machine is affected.

In order to achieve the purpose, the invention is realized by the following technical scheme: the automatic paper box packaging machine structurally comprises a machine body, a paper box positioner, a lifting frame, a tape pasting device, a capping device and a paper box conveying mechanism, wherein the paper box conveying mechanism is installed at the top of the machine body, the paper box positioner is arranged above the paper box conveying mechanism, the lifting frame is further arranged above the paper box positioner and is movably matched with the machine body, the tape pasting device is installed in the middle of the top of the lifting frame, and one side of the tape pasting device is connected with the capping device.

Further optimized, the adhesive tape sticking device comprises a fixed shaft, a front adhesive tape pressing wheel assembly, a first connecting rod, an adhesive tape cutting mechanism, a second connecting rod, a rear adhesive tape pressing wheel assembly, a reset spring, a mounting frame and an adhesive tape fixing frame, wherein the adhesive tape fixing frame is arranged at the top of the mounting frame, the fixed shaft is arranged above one side inside the mounting frame and fixedly connected with the mounting frame, the front adhesive tape pressing wheel assembly is fixed at one side below the mounting frame and is connected with the adhesive tape cutting mechanism through the first connecting rod, the adhesive tape cutting mechanism is arranged below the second connecting rod and is positioned between the front adhesive tape pressing wheel assembly and the rear adhesive tape pressing wheel assembly, the front adhesive tape pressing wheel assembly is movably matched with the rear adhesive tape pressing wheel through the second connecting rod, and the right side of the rear adhesive tape pressing wheel is connected with the reset spring, the reset spring is fixedly connected with the mounting frame.

Further preferably, the adhesive tape cutting mechanism comprises a gear, a circular ring opening, an adhesive tape cutting mechanism main body, a glue scraper, an adhesive tape cutting knife and a strip opening, wherein the gear is arranged on one side inside the adhesive tape cutting mechanism main body, the circular ring opening is formed in the adhesive tape cutting mechanism main body, the circular ring opening and the gear are of a concentric circle structure, the strip opening is formed in one side, away from the circular ring opening, of the adhesive tape cutting mechanism main body, the strip opening is movably matched with the adhesive tape cutting knife, and the glue scraper is arranged on two sides below the adhesive tape cutting knife.

Further preferably, the glue scraper comprises a limiting groove, a scraper body and a scraper, wherein the limiting groove is formed in one side, facing the adhesive tape cutting knife, of the scraper body, and one side, far away from the adhesive tape cutting knife, of the scraper body is connected with the limiting groove through a hinge.

Further preferably, the scraper is provided with a spring shaft, the spring shaft penetrates through the scraper and is in clearance fit with the scraper, one end of the spring shaft is connected with the spring, and the other end of the spring is connected with the limiting groove.

Further optimize, the groove, stopper, connecting rod are accomodate including semicircle board, movable rod, scaler main part, scraper blade, opening to the scaler, the inside opening that is equipped with of scaler main part is accomodate the groove, the inslot portion is accomodate to the opening is equipped with the semicircle board, the semicircle board is connected with the connecting rod, connecting rod and spring arbor transition fit, the spring arbor runs through and with movable rod clearance fit, movable rod and scraper blade hinged joint, one side that the sticky tape cutting knife was kept away from to the movable rod is equipped with the stopper, stopper and movable rod fixed connection.

Further preferably, the spring shaft penetrates through and is in clearance fit with the scraper main body, and the semicircular plate is in movable fit with the opening of the opening accommodating groove.

Further optimize, the sticky tape cutting knife is including open slot, spacing sawtooth, spring, rack, cutting knife, the rack bottom with cutting knife fixed connection, the both sides of cutting knife are equipped with the open slot respectively, open slot internal connection is in the one end of spring, the other end and the spacing sawtooth of spring are connected.

Further optimize, connecting rod and gear fixed connection, the position of connecting is the lower left corner of ring mouth.

Advantageous effects

The intelligent logistics box sealing machine has the following beneficial effects:

the invention is arranged by combining the adhesive tape cutter and the adhesive scraper, when the adhesive tape is cut, the adhesive tape cutter descends, the cutter wall is attached to a scraper body on the adhesive scraper, the scraper body scrapes the residual adhesive on the cutter wall, after the adhesive tape cutter finishes cutting, the next carton jacks a front adhesive tape pressing wheel and a rear adhesive tape pressing wheel to drive the adhesive tape cutter to ascend, a limiting saw tooth on the adhesive tape cutter jacks a scraper, a semicircular plate makes circular motion through a clockwork spring and a spring shaft, the residual adhesive on the scraper body is sent into an opening accommodating groove, then in the rotating process, the inner wall of the scraper body scrapes the outer wall of the semicircular plate, the semicircular plate rotates to impact the scraper, the impact force throws the residual adhesive attached on the scraper into the opening accommodating groove, the scraper scrapes the inner wall of the semicircular plate under the limitation of a limiting block, the adhesive tape attached on the cutter wall is prevented from adhering on the cutter wall, unable effective cutting to the sticky tape, do not need the manual work to clear away the surplus glue on the sword wall, improve the work efficiency of commodity circulation express delivery case sealer.

Drawings

Other features, objects and advantages of the invention will become more apparent from a reading of the detailed description of non-limiting embodiments with reference to the attached drawings.

Fig. 1 is a schematic structural view of a logistics packer of the invention.

FIG. 2 is a schematic view showing the internal structure of the tape application apparatus of the present invention.

FIG. 3 is a schematic view of the internal structure of the tape cutting mechanism of the present invention.

Fig. 4 is a schematic cross-sectional view of the squeegee of the present invention.

Fig. 5 is an enlarged structural diagram of a in fig. 4.

Fig. 6 is a partial sectional view schematically showing the structure of the tape cutting mechanism body.

Fig. 7 is a schematic cross-sectional view of the cutting knife of the present invention.

In the figure: the automatic paper box cutting machine comprises a machine body 1, a paper box positioner 2, a lifting frame 3, a tape pasting device 4, a capping device 5, a paper box conveying mechanism 6, a fixed shaft 41, a front tape pressing wheel assembly 42, a first connecting rod 43, a tape cutting mechanism 44, a second connecting rod 45, a rear tape pressing wheel assembly 46, a reset return spring 47, a mounting frame 48, a tape fixing frame 49, a gear 441, a circular ring opening 442, a tape cutting mechanism main body 443, a glue scraper 444, a tape cutting knife 445, a long strip opening 446, a limiting groove 4441, a machine body 4442, a scraper 4443, a spring shaft 4444, a spring 4445, a semi-circular plate a, a movable rod b, a scraper main body c, a scraper d, an opening accommodating groove e, a limiting block f, a connecting rod g, an open groove 445a, a limiting sawtooth 445b, a spring 445c rack 445d and a cutting knife 445 e.

Detailed Description

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

Example one

As shown in fig. 1 to 3, the present invention provides a technical solution of an intelligent logistics box sealing machine: the automatic paper box packaging machine structurally comprises a machine body 1, a paper box positioner 2, a lifting frame 3, a tape pasting device 4, a capping device 5 and a paper box conveying mechanism 6, wherein the paper box conveying mechanism 6 is installed at the top of the machine body 1, the paper box positioner 2 is arranged above the paper box conveying mechanism 6, the lifting frame 3 is further arranged above the paper box positioner 2, the lifting frame 3 is movably matched with the machine body 1, the tape pasting device 4 is installed in the middle of the top of the lifting frame 3, and one side of the tape pasting device 4 is connected with the capping device 5.

Specifically, the tape bonding device 4 comprises a fixing shaft 41, a front tape pressing wheel assembly 42, a first connecting rod 43, a tape cutting mechanism 44, a second connecting rod 45, a rear tape pressing wheel assembly 46, a reset spring 47, a mounting frame 48 and a tape fixing frame 49, wherein the tape fixing frame 49 is arranged at the top of the mounting frame 48, the fixing shaft 41 is arranged above one side inside the mounting frame 48, the fixing shaft 41 is fixedly connected with the mounting frame 48, the front tape pressing wheel assembly 42 is fixed at one side below the mounting frame 48, the front tape pressing wheel assembly 42 is connected with the tape cutting mechanism 44 through the first connecting rod 43, the tape cutting mechanism 44 is arranged below the second connecting rod 45, the tape cutting mechanism 44 is positioned between the front tape pressing wheel assembly 42 and the rear tape pressing wheel assembly 46, pressing wheels on the front tape pressing wheel assembly 42 and the rear tape pressing wheel assembly 46 are used for pressing a tape, the front tape pressing wheel assembly 42 is movably matched with the rear tape pressing wheel 46 through the second connecting rod 45, the right side of the rear adhesive tape pressing wheel 46 is connected with a return spring 47, the return spring 47 is fixedly connected with the mounting frame 48, and the return spring 47 can store force under the compression to provide power for the rear adhesive tape pressing wheel 46 to return.

Specifically, the tape cutting mechanism 44 includes a gear 441, a circular opening 442, a tape cutting mechanism body 443, a glue scraper 444, a tape cutter 445 and a strip opening 446, the gear 441 is disposed on one side inside the tape cutting mechanism body 443, the gear 441 can rotate forward or backward under the influence of the first connecting rod 43, the circular opening 442 is disposed on the tape cutting mechanism body 443, so that the first connecting rod 43 can be connected to the gear 441 to drive the gear 441 to rotate, the circular opening 442 and the gear 441 are concentric circles, the strip opening 446 is disposed on one side of the tape cutting mechanism body 443 away from the circular opening 442, the strip opening 446 is movably matched with the tape cutter 445, the glue scraper 444 is disposed on both sides of the lower portion of the tape cutter 445, the glue scraper 444 is used for scraping residual glue on the tape cutter 445, the tape cutter 445 is used for cutting off the tape, the first connecting rod 43 is fixedly connected to the gear 441, the attachment location is the lower left corner of the annular ring 442.

Based on the above embodiment, the specific working principle is as follows:

the carton is placed in carton conveying mechanism 6 when commodity circulation baling press starts, carton locator 2 guides the carton to remove along the fixed track, remove to closing device 5 below, closing device 5 is closed with the carton opening, when tape-stripping device 4, the carton is earlier with sticky tape bonding then with preceding sticky tape pinch roller subassembly 42 jack-up, preceding sticky tape pinch roller subassembly 42 pulls up back sticky tape pinch roller subassembly 46 through No. two connecting rods 45, both bottoms are in the parallelism, preceding sticky tape pinch roller subassembly 42 drives a connecting rod 43 and removes, because fixed connection, a connecting rod 43 drives the rotation of gear 441 through ring mouth 442, it provides power for frictioning ware 444 frictioning to go up with the sticky tape cutting knife 445 that gear 441 meshes, make frictioning ware 444 scrape the remaining surplus glue on sticky tape cutting knife 445.

Example two

As shown in fig. 4-5, the adhesive scraper 444 in the first embodiment includes a limiting groove 4441, a body 4442, and a scraper 4443, wherein the body 4442 is provided with a limiting groove 4441 on a side facing the tape cutter 445, a side of the scraper 4443 away from the tape cutter 445 is hinged to the limiting groove 4441, and the limiting groove 4441 limits the scraper 4443, so that the scraper 4443 is attached to the tape cutter 445 to scrape off the residual adhesive on the blade wall.

As shown in fig. 5, a spring shaft 4444 is provided on the scraper 4443, the spring shaft 4444 penetrates and is in clearance fit with the scraper 4443, the spring shaft 4444 penetrates through the scraper body c and is in clearance fit with the scraper body c, the opening of the opening accommodating groove e is movably fitted with the semicircular plate a, one end of the spring shaft 4444 is connected with the spring 4445, the other end of the spring 4445 is connected with the limiting groove 4441, and the spring shaft 4444 can drive the semicircular plate a to accommodate the residual glue on the scraper 4443 when the scraper 4443 rotates to wind the spring 4445.

As shown in fig. 6, scraper 4443 comprises a semicircular plate a, a movable rod b, a scraper body c, a scraper d, groove e is accomodate to the opening, stopper f, connecting rod g, scrape ware main part c is inside to be equipped with the opening and to accomodate groove e, the inside semicircle board an that is equipped with of groove e is accomodate to the opening, semicircle board an is connected with connecting rod g, connecting rod g and spring shaft 4444 transition fit, spring shaft 4444 runs through and with movable rod b clearance fit, movable rod b and scraper blade d hinged joint, one side that sticky tape cutting knife 445 was kept away from to movable rod b is equipped with stopper f, setting up of stopper f can prevent that scraper blade d from can't striking off to the inner wall of semicircle board a after the striking, stopper f and movable rod b fixed connection, semicircle board a is rotatory to accomodate the surplus glue under spring shaft 4444's drive, scrape the glue of scraping to the outer wall of semicircle board a of ware main part c inner wall when rotatory inside simultaneously.

Above-mentioned scraper blade d falls perpendicularly under the restriction that does not have semicircle board an, can strike scraper blade d when semicircle board a rotates through scraper blade d, and the impact gets rid of the remaining glue on the scraper blade d into the opening and accomodates the inslot e, receives the unable perpendicular falling of restriction of semicircle board an inner wall simultaneously, and scraper blade d strikes off the remaining glue on the semicircle board an inner wall.

As shown in fig. 7, the tape cutter 445 includes an open slot 445a, a limit saw tooth 445b, a spring 445c, a rack 445d, a cutter 445e, the bottom of the rack 445d is fixedly connected with the cutter 445e, the open slot 445a is respectively arranged on both sides of the cutter 445e, the inside of the open slot 445a is connected with one end of the spring 445c, the other end of the spring 445c is connected with the limit saw tooth 445b, and the limit saw tooth 445b jacks up a scraper 4444 when the tape cutter 445 rises, so that the arc rack plate a is matched with the arc rack 4441.

Based on the above embodiment, the specific working principle is as follows:

in the first embodiment, when the tape cutter 445 is lifted, the limiting saw teeth 445b on the cutter 445e pass through the scraper 4443, the scraper 4443 is jacked up towards one side of the cutter 445e, the spring shaft 4444 winds the spring 4445 to rotate and drive the semicircular plate a to rotate to accommodate the residual glue on the scraper main body c, when the scraper d passes through the scraper d, the semicircular plate a strikes the scraper d, the residual glue is thrown into the opening accommodating groove e by the stressed scraper d, the scraper d cannot vertically fall under the limitation of the semicircular plate a and the limiting block f, the residual glue on the inner wall of the semicircular plate a is scraped, when the outer wall of the semicircular plate a passes through the inner wall of the scraper main body c, the residual glue on the outer wall of the semicircular plate a is scraped by the inner wall of the scraper main body c, when the whole tape cutter 445 is moved up to above the scraper 4443, the scraper 4443 falls down and resets, after the carton is packed, the adhesive tape pressing wheel 46 resets after the reset spring 47 is pulled, the rear adhesive tape pressing wheel assembly 46 drives the front adhesive tape pressing wheel assembly 42 and the first connecting rod 43 to reset, so that the gear 441 rotates clockwise to drive the adhesive tape cutting knife 445 to descend, when the scraper body b passes through, the scraper body b is limited by the limiting groove 4441, and the scraper body b scrapes the residual adhesive.

The invention solves the problem that after a cutter on a tape cutter cuts for multiple times, some glue on the tape can be adhered to the cutter wall, when the adhered excess glue is excessive, the tape can be adhered to the cutter wall, the tape cannot be effectively cut, the tape needs to be manually scraped, the tape needs to be torn off and reset to be in a normal state, and the working efficiency of the logistics express box sealing machine is influenced. Will be in the surplus glue on the scraper body send into the opening and accomodate the inslot, then at rotatory in-process, the internal wall of scraper carries out the frictioning to the outer wall of semicircle board, the rotatory striking scraper blade of semicircle board, the impact gets rid of into the opening with adnexed surplus glue on the scraper blade and accomodates inslot portion, the scraper blade receives the inner wall of semicircle board to carry out the frictioning under the restriction of stopper, the surplus glue of avoiding appearing attached to on the sword wall adheres to the sticky tape on the sword wall, can't effectively cut the sticky tape, do not need the artifical surplus glue of cleaing away on the sword wall, the work efficiency of express delivery commodity circulation case sealer is improved.

In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.