[go: up one dir, main page]

WO2025002002A1 - 用于包装件的开启装置以及包装件 - Google Patents

用于包装件的开启装置以及包装件 Download PDF

Info

Publication number
WO2025002002A1
WO2025002002A1 PCT/CN2024/100675 CN2024100675W WO2025002002A1 WO 2025002002 A1 WO2025002002 A1 WO 2025002002A1 CN 2024100675 W CN2024100675 W CN 2024100675W WO 2025002002 A1 WO2025002002 A1 WO 2025002002A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutter
cap
guide
axis
opening device
Prior art date
Application number
PCT/CN2024/100675
Other languages
English (en)
French (fr)
Inventor
梁杰
何小宾
侯淑英
封衍
刘华文
Original Assignee
乐美包装（昆山）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202410788668.0A external-priority patent/CN119190629A/zh
Application filed by 乐美包装（昆山）有限公司 filed Critical 乐美包装（昆山）有限公司
Publication of WO2025002002A1 publication Critical patent/WO2025002002A1/zh

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes
    • B65D51/28—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes with auxiliary containers for additional articles or materials

Definitions

  • Embodiments of the present disclosure generally relate to an opening device for a package, and more particularly to a reclosable opening device.
  • a sealing layer such as a pierceable film.
  • An existing opening device for such packages includes a cutter capable of cutting the sealing layer, which can be moved toward the sealing layer under the action of a twistable cap to cut the sealing layer so that the contents of the package can be poured out from the opening.
  • the present disclosure provides an opening device for a package, comprising a base, a cap, a cutter, a drive connection device and a guide device.
  • the base defines an opening having an axis.
  • the cap is threadedly connected to the base to close and open the opening.
  • the cutter is cylindrical and has a cutting portion arranged at its distal end. The cutter is at least partially arranged in the opening of the base.
  • the drive connection device couples the cutter to the cap and is configured to cause the rotation of the cap to drive the cutter to move when the cap is initially loosened to open the opening to cut the sealing layer of the package.
  • the guide device couples the cutter to the base and is configured to guide the cutter to move along a predetermined path under the drive of the cap.
  • the predetermined path comprises a first starting spiral segment and a second subsequent spiral segment, and when moving along the first starting spiral segment and the second subsequent spiral segment, the cutter rotates around the axis while moving along the axis.
  • the distance the cutter moves in the axial direction when moving along the first starting spiral segment is greater than the distance the cutter moves in the axial direction when moving along the second subsequent spiral segment, but the angle of rotation of the cutter around the axis when moving along the first starting spiral segment is less than the angle of rotation around the axis when moving along the second subsequent spiral segment.
  • the guiding device includes at least one guiding groove and at least one guiding slide accommodated in at least one guiding groove, at least one guiding groove is arranged on the inner surface of the base, and at least one guiding slide is arranged on the outer surface of the cutter.
  • the opening device further comprises at least one limiting portion.
  • the at least one limiting portion is arranged in the first chute section of the at least one guide chute and is close to the starting position of the at least one guide chute.
  • the at least one limiting portion is configured to cooperate with the at least one guide slide block when the cutter is not driven by the cap to limit the cutter to its initial position, and is configured to allow the at least one guide slide block to pass over the at least one limiting portion when the cutter is driven by the cap to cut the sealing layer of the package.
  • the second cutting edge comprises a second cutting edge head portion close to the tip and a second cutting edge tail portion away from the tip, wherein the second cutting edge head portion and the second cutting edge tail portion together form a shape protruding away from the first cutting edge.
  • the driving connection device comprises a push column arranged on the cap and a joint portion arranged on the cutter.
  • the push column cooperates with the joint portion so that the movement of the cap drives the cutter to move toward the sealing layer.
  • two cap threads are provided on the inner surface of the cap for threading the cap to the base, and the starting points of the two cap threads differ by 180 degrees.
  • FIG. 1A is a diagram showing an opening device according to an embodiment of the present disclosure being used on a package
  • FIG1B is an exploded view of the opening device shown in FIG1A ;
  • FIG2A is a perspective view of the base of the opening device shown in FIG1A viewed from the front to the rear;
  • FIG2B is a perspective view of the base of the opening device shown in FIG1A viewed from the rear to the front;
  • FIG2C is a side view of the base shown in FIG2A;
  • FIG2D is a cross-sectional view along line A-A in FIG2C ;
  • FIG3A is a perspective view of the cap of the opening device shown in FIG1A when viewed from bottom to top at a first viewing angle;
  • FIG3B is a perspective view of the cap of the opening device shown in FIG1A from a second perspective when viewed from bottom to top;
  • FIG4A is a perspective view of the cutter of the opening device shown in FIG1A viewed from bottom to top;
  • FIG4B is a top view of the cutter shown in FIG4A;
  • Fig. 4C is a cross-sectional view along line B-B in Fig. 4B;
  • FIG5A is a perspective view of the opening device shown in FIG1A in a closed state
  • FIG5B is a cross-sectional view of the opening device shown in FIG1A in a closed state
  • FIG6A is a perspective view of the opening device shown in FIG1A in the opening process
  • FIG6B is a cross-sectional view of the opening device shown in FIG1A during the opening process
  • FIG. 7 is a perspective view of the opening device shown in FIG. 1A in an open state.
  • FIG. 1A and 1B show the overall structure of an opening device 100 according to an embodiment of the present disclosure, wherein FIG. 1A is a view of the opening device 100 in use in a package 1 , and FIG. 1B is an exploded view of the opening device 100 .
  • the opening device 100 is used to open and close the outlet (not shown) on the packaging box 10 of the package 1.
  • the top of the packaging box 10 is provided with an outlet, and a sealing layer (not shown) is encapsulated on the outlet, and the sealing layer can be cut so that the contents in the packaging 1 can be poured out from the outlet.
  • the opening device 100 is made of plastic material, for example.
  • the shape of the packaging box 10 can be other shapes except that shown in Fig. 1A.
  • the opening device 100 includes a base 110, a cap 120, a cutter 130 and an anti-fouling ring 140.
  • the base 110 is arranged around the sealing layer on the outlet of the packaging box 10 and is located above the sealing layer.
  • the cap 120 is threadedly connected to the base 110 and can be loosened from the base 110 or tightened again on the base 110.
  • the anti-fouling ring 140 is formed integrally with the cap 120, and the two are interconnected by a point-like weakened connecting portion 145, and the anti-fouling ring 140 is fixedly connected to the base 110.
  • the opening device 100 further includes a driving connection device for connecting the cap 120 with the cutter 130, so that the movement of the cap 120 can drive the cutter 130 to move toward the sealing layer.
  • the opening device 100 further includes a guide device, which connects the cutter 130 with the base 110 and is used to guide the cutter 130 to move along a predetermined path under the drive of the cap 120, so as to cut the sealing layer in the following desired manner.
  • the predetermined path includes a first starting spiral segment and a second subsequent spiral segment.
  • the cutter 130 moves along the axis X of the base 110 and rotates around the axis X.
  • the distance moved by the cutter 130 in the direction of the axis X when moving along the first starting spiral segment is greater than the distance moved in the direction of the axis X when moving along the second subsequent spiral segment.
  • the angle at which the cutter 130 rotates about the axis X when moving along the first initial spiral segment is smaller than the angle at which the cutter 130 rotates about the axis X when moving along the second subsequent spiral segment.
  • the driving connection device includes a propulsion column 370 (see FIGS. 3A and 3B ) provided on the cap 120 and an engagement portion 420 (see FIGS. 4A and 4B ) provided on the cutter 130
  • the guide device includes a guide slide groove 252 (see FIGS. 2A and 2D ) provided on the inner surface of the base 110 and a guide slider 453 (see FIGS. 4A-4C ) provided on the outer surface of the cutter 130, which will be described in detail below.
  • FIGS. 2A-2D show the specific structure of the base 110, wherein FIG. 2A is a stereoscopic view of the base 110 from the front to the rear, FIG. 2B is a stereoscopic view of the base 110 from the rear to the front, FIG. 2C is a side view of the base 110, and FIG. 2D is a cross-sectional view along the A-A line in FIG. 2C .
  • base 110 has axis X.
  • Base 110 comprises cylindrical neck 220 centered around axis X and flange 230 arranged at one axial end of neck 220.
  • Neck 220 defines opening 215 for pouring contents (e.g., beverage) of package 1.
  • Flange 230 extends outwardly around neck 220 and away from axis X, for connecting base 110 to the top of packaging box 10.
  • Base 110 is arranged around the sealing layer on packaging box 10, so that, after sealing layer is cut, the outlet on packaging box 10 covered by sealing layer is connected with opening 215 of base 110, so that the contents in packaging box 1 can be poured out through opening 215 of opening device 110.
  • two base threads are provided on the outer surface of the neck 220 of the base 110, namely, a first base thread 260 and a second base thread 270.
  • the first base thread 260 and the second base thread 270 are used to engage with the threads on the cap 110 to threadably connect the cap 120 to the base 110.
  • the cap 120 can thus be rotated around the axis X to be tightened on the base 110, or loosened from the base 110, thereby closing or opening the opening 215 of the base 110.
  • the first base thread 260 and the second base thread 270 are two threads independent of each other, and the two are staggered. In addition, the angles at which the first base thread 260 and the second base thread 270 extend around the base 110 are both less than 360 degrees.
  • the first base thread 260 has a head end 261 and a tail end 263, and in the axial direction of the base 110, the head end 261 is located above the tail end 263.
  • the second base thread 270 has a head end 271 and a tail end 273, and in the axial direction of the base 110, the head end 271 is located above the tail end 273.
  • the head end 261 of the first base thread 260 and the head end 271 of the second base thread 270 are staggered 180 degrees in the circumferential direction.
  • the cap 120 can be opened at a smaller screwing angle while ensuring sufficient thread connection strength, and at the same time, the thread occupies a smaller area in the axial direction of the base 110. Therefore, compared with a single thread, when the threaded cap 120 is rotated at the same angle, the distance it rises is greater, thereby making the cap 120 easier to open.
  • FIG. 2A and Fig. 2B four guide slots 252 are arranged on the inner surface of the base 110, two of which can be seen in Fig. 2A, and the other two can be seen in Fig. 2B.
  • the four guide slots 252 have substantially the same configuration.
  • each guide chute 252 includes a first chute section 254 and a second chute section 256 connected to each other.
  • the first chute section 254 is farther away from the flange 230 of the base 110 than the second chute section 256, so the starting position and the end position of the guide chute 252 are respectively located at the ends of the first chute section 254 and the second chute section 256 away from each other.
  • the first chute section 254 cooperates with the guide slider 453 provided on the outer surface of the cutter 130 to define the first starting spiral section in the predetermined path.
  • the second chute section 256 cooperates with the guide slider 453 provided on the outer surface of the cutter 130 to define the second subsequent spiral section in the predetermined path.
  • the first chute section 254 is steeper than the second chute section 256.
  • the trajectories formed by the first chute section 254 and the second chute section 256 are both involutes. In other embodiments, the trajectories formed by the first chute section 254 and the second chute section 256 can also be other types of curves.
  • the first slide groove section 254 and the second slide groove section 256 are configured so that, in response to the cap 120 rotating a specific angle, the distance that the cutter 130 moves in the direction of the axis X when moving along the first starting spiral section (under the guidance of the first slide groove section 254) is greater than the distance that the cutter 130 moves in the direction of the axis X when moving along the second subsequent spiral section (under the guidance of the second slide groove section 256), but the angle at which the cutter 130 rotates around the axis X when moving along the first starting spiral section (under the guidance of the first slide groove section 254) is less than the angle at which the cutter 130 rotates around the axis X when moving along the second subsequent spiral section (under the guidance of the second slide groove section 256).
  • the first chute section 254 extends a shorter length on the inner surface of the base 110, while the second chute section 256 extends a longer length on the inner surface of the base 110.
  • the first chute sections 254 of the four guide chute 252 are evenly arranged on the inner surface of the base 110 around the axis X.
  • a limiting portion 257 is provided in the first chute section 254 of each guide chute 252.
  • the limiting portion 257 is arranged near the starting position of the guide chute 252, and a chute entrance 251 is arranged at the starting position.
  • a holding space is formed between the limiting portion 257 and the chute entrance 251, which is used to accommodate the guide slider 453 on the outer surface of the cutter 130 (as shown in FIG. 4A ).
  • the limiting portion 257 is a limiting protrusion protruding from the first chute section 254.
  • the limiting portion 257 can cooperate with the guide slider 453 arranged on the outer surface of the cutter 130 to keep the guide slider 453 in the holding space between the limiting portion 257 and the chute entrance 251, thereby keeping the cutter 130 in its initial position.
  • the limiting portion 257 is arranged so that when the cutter 130 is driven by the cap 120, the cutter 130 can pass over the limiting portion 257 to move along the guide slider.
  • the height of the stopper 257 protruding from the first slide groove section 254 is set so that when the cutter 130 has not been driven by the cap 120, the guide slider 453 on the outer surface of the cutter 130 and the stopper 257 contact each other with a certain friction force, and when the cutter 130 is driven by the cap 120, the driving force can overcome the friction force, so that the cutter 130 can pass over the stopper 257.
  • a stopper 259 is provided in the second chute section 256 of each guide chute 252, and the stopper 259 defines the terminal position of the guide chute 252.
  • the stopper 259 is a component protruding from the second chute section 256, and when the cutter 130 moves in the guide chute 252 until the guide slider 453 on its outer surface hits the stopper 259, the cutter 130 reaches its terminal position. The stopper 259 can keep the cutter 130 at its terminal position.
  • FIG. 3A-3D show the specific structure of the cap 120.
  • FIG. 3A is a stereoscopic view of the cap 120 of the opening device 100 shown in FIG. 1 from a first perspective when viewed from bottom to top
  • FIG. 3B is a stereoscopic view of the cap 120 from a second perspective when viewed from bottom to top, wherein FIG. 3B is rotated at a certain angle based on FIG. 3A.
  • the cap 120 has an axis A, and when the cap 120 is installed in place on the base 110, the cap 120 is coaxially arranged with the base 110, that is, the axis A of the cap 120 coincides with the axis X of the base 110.
  • the cap 120 includes a circular top cover 310 and a cylindrical side wall 320, and the side wall 320 surrounds the edge of the top cover 310 and extends along the axis A direction. On the inner surface of the side wall 320, a thread 383 for engaging with the thread 240 on the base 110 is provided.
  • the cap 120 further includes a propulsion column 370, which extends from the top cover 310 toward the base 110 along the axis A direction, and the propulsion column 370 is at least partially accommodated in the accommodation space formed by the cylindrical side wall 320.
  • the propulsion column 370 is separated from the side wall 320 by a certain distance in the radial direction so that the neck 220 of the base 110 can be accommodated between the propulsion column 370 and the side wall 320.
  • the cap 120 includes three propulsion columns 370, which are symmetrically arranged relative to the axis A.
  • Each propulsion column 370 also extends along the circumferential direction, and the three propulsion columns 370 extend on the same circumference.
  • the number of propulsion columns is not limited to three, for example, two.
  • the push rod 370 is generally in the shape of a sheet and includes a driving edge 372.
  • the driving edge 372 includes a first edge 373 close to the top cover 310 and a second edge 375 away from the top cover 310, and the second edge 375 is connected to the first edge 373.
  • the first edge 373 and the second edge 375 both extend obliquely relative to the axis A, but the inclination of the second edge 375 is less than that of the first edge 373.
  • the driving edge 372 engages with the engaging portion 420 on the cutter 130 (see FIG4A ), so that the cutter 130 is driven to move to perform a cutting operation by loosening (rotating) the cap 120.
  • the cutter 130 When the first edge 373 of the driving edge 372 drives the cutter 130, the cutter 130 is moved on the base. The cutter 130 moves under the guidance of the first slide groove section 254 of the guide slide groove 252 of the base 110 .
  • the cutter 130 moves under the guidance of the second slide groove section 256 of the guide slide groove 252 of the base 110 .
  • two cap threads 383 are provided on the inner surface of the cap 120, and the arrangement of the two cap threads 383 corresponds to the arrangement of the two base threads (i.e., the first base thread 260 and the second base thread 270) on the outer surface of the base 110 to achieve threaded engagement between the two.
  • FIG. 4A-4C show the specific structure of the cutter 130.
  • Fig. 4A is a perspective view of the cutter 140 viewed from bottom to top, and Fig. 4A also includes a partial enlarged view showing a single cutting tooth
  • Fig. 4B is a top view of the cutter 130
  • Fig. 4C is a cross-sectional view along line B-B in Fig. 4B.
  • the cutter 130 includes a cylindrical cutter body 410 having an axis L.
  • the axis L of the cutter body 410 coincides with the axis X of the base 110.
  • the cutter 130 includes a cutting portion 435 arranged at an axial end of the cutter body 410.
  • the cutting portion 435 includes a plurality of cutting teeth 460 for cutting the sealing layer of the packaging box 10.
  • the plurality of cutting teeth 460 are arranged on the same circumference, but the circumference is not covered with the cutting teeth 460, but has a separation space 480. Specifically, as shown in Fig.
  • the cutter 130 includes 7 cutting teeth 460, which are arranged in contact with each other, and the separation space 480 is provided between the first and the last cutting teeth 460.
  • the 7 cutting teeth roughly occupy three quarters of the circumference, and the separation space 480 roughly occupies one quarter of the circumference.
  • Each cutting tooth 460 has a tip 462 facing the sealing layer and a first cutting edge 463 and a second cutting edge 465 located on opposite sides of the tip 462, and the first cutting edge 463 and the second cutting edge 465 intersect to form the tip 462.
  • the first cutting edge 463 is located in front of the second cutting edge 465.
  • the first cutting edge 463 and the second cutting edge 465 are configured so that in the rotation direction J1 of the cutter 130, the tip 462 points forward.
  • the first cutting edge 463 includes a first cutting edge head 471 near the tip 462 and a first cutting edge tail 472 away from the tip 462, and the two are connected to each other. From the direction of the axis L, the first cutting edge head 471 is steeper than the first cutting edge tail 472. The first cutting edge head 471 and the first cutting edge tail 472 together form a first cutting edge 463 that is recessed toward the second cutting edge 465.
  • the second cutting edge 465 includes a second cutting edge head 476 near the tip 462 and a second cutting edge tail 477 away from the tip 462, and the two are connected to each other.
  • the second cutting edge head 476 and the second cutting edge tail The portions 477 have different inclinations relative to the axis L and together form a second cutting edge 465 protruding away from the first cutting edge 463.
  • the tip 462 formed by the first and second cutting edges 463 and 465 thus arranged points forward (in the rotation direction J1 of the cutter 130).
  • an engagement portion 420 is provided on the inner surface of the cutter 130 for engaging with the push post 370 on the cap 120, so that the cap 120 can drive the cutter 130 to perform a cutting operation when it is loosened.
  • the engagement portion 420 is a rib protruding from the inner surface of the cutter 130.
  • the engagement portion 420 has a leading edge 422 (see Fig. 4B) that engages with the driving edge 372 (as shown in Fig. 3B) of the push post 370 of the cap 120.
  • the leading edge 422 forms an acute angle with the inner surface of the cutter 130 so that the leading edge 422 and the driving edge 372 are better engaged.
  • a guide slider 453 is provided on the outer surface of the cutter 130, and the number of the guide sliders 453 is the same as the number of the guide slots 252, and each guide slider 453 is engaged with a corresponding guide slot 252.
  • Four guide sliders 453 are evenly arranged on the outer surface of the cutter 130 around the axis J.
  • Each guide slider 453 extends in a direction perpendicular to the axis J (and the axis X) and gradually contracts as it moves away from the cutter 130. Therefore, each guide slider 453 is generally in the shape of a truncated cone.
  • the guide slider 453 is arranged near the end of the cutter 130 away from the cutting portion 435.
  • FIG. 5A and 5B show the matching relationship between the various components when the opening device 100 shown in FIG. 1A is in a closed state, wherein FIG. 5A is a stereoscopic view of the opening device 100 in a closed state, and FIG. 5B is a cross-sectional view of the opening device 100 in a closed state.
  • the cap 120 when the opening device 100 is in the closed state, the cap 120 is in an initial position that has not been initially loosened, and the root of the driving edge 372 on the pushing column 370 of the cap 120 that is connected to the top cover 310 of the cap 120 contacts the front edge 422 of the engaging portion 420 of the cutter 130, and the guide slider 453 of the cutter 130 is located in the first slide groove section 254 of the guide slide groove 252 of the base 110 and is maintained in its initial position by the limiting portion 257.
  • the cap 120 of the opening device 100 in the closed state (as shown in Figures 5A and 5B) must first be initially loosened from the base 110 along the direction J1 until the cap 120 can be separated from the base 110. While the cap 120 is being loosened, the cap 120 drives the cutter 130 to move toward the sealing layer.
  • the process of loosening the cap 120 from the base 110 is divided into two parts. In the first part, the cutter 130 is driven by the cap 120 to move along the first starting screw in the predetermined path. In the second part of the spiral segment movement, the cutter 130 is driven by the cap 120 to move along a second subsequent spiral segment in a predetermined path.
  • the cap 120 moves away from the base 110 along the axis X while rotating.
  • the first edge 373 of the driving edge 372 on the push rod 370 gradually contacts the front edge 422 of the joint 420 in the direction from top to bottom as shown in FIG. 5A. That is, the front edge 422 of the joint 420 moves along the first edge 373 in the direction from top to bottom as shown in FIG. 5A.
  • the cutter 130 moves along the first starting spiral section in the predetermined path under the drive of the cap 120 and under the guidance of the guide device (the guide slider 453 and the guide slot 252).
  • the cutter 130 moves linearly along the axis X toward the sealing layer while rotating in the direction J1 around the axis X, which causes the tip 462 of the cutting tooth 460 of the cutter 130 to pierce a small hole in the sealing layer. Furthermore, as the cutter 130 moves linearly and rotates, the first cutting blade head 471 and the second cutting blade head 476 of the cutting tooth 460 will continue to pierce and cut the sealing layer, thereby expanding the hole.
  • the cutter 130 moves linearly along the axis X toward the sealing layer with a large amplitude, while the amplitude of its rotation around the axis X is relatively small.
  • the front edge 422 of the joint 420 engages with the second segment edge 375 of the driving edge 372 on the push rod 370, and the guide slider 453 of the cutter 130 moves in the second segment 256 of the guide slot 252 of the base 110.
  • the second segment edge 375 of the driving edge 372 on the push rod 370 gradually contacts the front edge 422 of the joint 420 in the direction from top to bottom as shown in FIG. 5A. That is, the front edge 422 of the joint 420 moves along the second segment edge 375 in the direction from top to bottom as shown in FIG. 5A.
  • the cutter 130 moves along the second subsequent spiral segment in the predetermined path.
  • the cutter 130 still moves linearly along the axis X toward the sealing layer while rotating in the direction J1 around the axis X.
  • the second chute section 256 of the guide chute 252 is arranged relatively gently (i.e., the inclination is relatively large relative to the axis X)
  • the cutter 130 moves linearly along the axis X toward the sealing layer at a relatively small amplitude, while the cutter 130 rotates around the axis X at a relatively large amplitude.
  • the tail 472 of the first cutting edge 463 and the tail 477 of the second cutting edge 465 of the cutting tooth 460 further cut the sealing layer until the threaded engagement of the cap 120 and the base 110 reaches the end of the stroke, i.e., reaches the state shown in FIGS. 6A and 6B .
  • the first cutting edge 460 Since the first cutting edge 463 is located ahead of the second cutting edge 465 in the rotation direction J1, the first cutting edge 460 mainly plays a role in puncturing and cutting the sealing layer.
  • Figures 6A and 6B show the opening device 100 in the process of opening, wherein Figure 6A is a perspective view of the opening device 100 in the process of opening, and Figure 6B is a cross-sectional view of the opening device 100 in the process of opening.
  • Figure 7 is a perspective view of the opening device shown in Figure 1A in an open state.
  • the cutter 130 gradually cuts the sealing layer
  • the cutter 130 gradually enters the packaging box 10 and folds the cut sealing layer toward the outside thereof. Since the sealing layer is connected to the package at a small section and is blocked outside the cutter 130, the sealing layer will not fall into the package and will not block the contents in the package from being poured out from the outlet.
  • the inventors of the present application have discovered that there are three schemes for driving the cutter in the existing opening device, as follows: in the first scheme, when the cutter cuts the sealing layer, it first performs a pure linear motion and then a pure rotational motion; in the second scheme, when the cutter cuts the sealing layer, it first performs a spiral motion and then a pure rotational motion; in the third scheme, when the cutter cuts the sealing layer, it first performs a pure linear motion and then a spiral motion.
  • the process of cutting the sealing layer is divided into two stages: (1) the stage of puncturing the sealing layer with a cutter, and in this stage it is hoped that the punctured sealing layer has a wider puncture opening to facilitate the next step of cutting, and in this stage it is hoped that the cutter has a larger downward (axial) force to make the cutting at this stage easier; (2) the stage of cutting the sealing layer from the punctured part along the rotation direction with the cutter.
  • a downward (axial) force is required, especially considering that the cutting portion of the cutter is provided with generally triangular cutting teeth along its circumference.
  • the defects of the first solution include: (i) when the cutter is used to pierce the sealing layer, the cutter can only move linearly downward in the axial direction without rotational movement, the pierced portion on the sealing layer is small, and the cutting teeth cannot fully play their role; (ii) When the cutter is used to cut the punctured portion of the sealing layer in the direction of rotation, the cutting resistance is relatively large because only pure rotational motion is performed without linear motion downward in the axial direction.
  • the defects of the second solution include: (i) it does not take into account the need to apply downward force in both the puncture stage and the cutting stage, and (ii) in a simple horizontal rotation, the cutting resistance is large because no downward force is applied.
  • the defects of the third solution include: (i) it does not take into account that downward force needs to be applied in both the puncturing stage and the cutting stage, and the entire sealing layer cutting process cannot be optimized.
  • the solution disclosed in the present invention is to divide the predetermined motion trajectory of the cutter into two sections, namely, a first starting spiral section and a second subsequent spiral section, by setting a guide slot on the base.
  • the cutter rotates around the axis X while moving along the axis X of the base.
  • the distance moved by the cutter in the direction of the axis X when moving along the first starting spiral section is greater than the distance moved in the direction of the axis X when moving along the second subsequent spiral section, but the angle of rotation of the cutter around the axis X when moving along the first starting spiral section is less than the angle of rotation around the axis X when moving along the second subsequent spiral section.
  • the present invention overcomes the defects of the above prior art, because the setting of the present invention adapts to the different needs of the puncture stage and the cutting stage of the sealing layer, and optimizes the cutting process of the sealing layer.
  • the cutter in the stage of mainly puncturing the sealing layer (i.e., the movement of the cutter along the first starting spiral section), the cutter not only makes a linear motion along the axis toward the sealing layer, but also makes a rotational motion around the axis, and the amplitude of the linear motion is large, and the amplitude of the rotational motion is small, so that the driving force of the cap is mainly used to drive the cutter to move linearly, so as to facilitate the puncture operation, but because the cutter also makes a rotational motion, it is easier to puncture the sealing layer.
  • the cutter In the stage of mainly cutting the sealing layer (i.e., the movement of the cutter along the second subsequent starting spiral section), the cutter not only makes a rotational motion around the axis, but also makes a linear motion along the axis toward the sealing layer, and the amplitude of the rotational motion is large, and the amplitude of the linear motion is small, so that the driving force of the cap is mainly used to drive the cutter to move linearly, so as to facilitate the cutting operation, but because the cutter also makes a linear motion, it is easier to cut the sealing layer.
  • the present disclosure sets the cutting edge of each cutting tooth so that the head of the first cutting edge located in the front of the rotation direction is steeper and the tail is gentler, which is more conducive to the puncturing and cutting operations of the cutting teeth.
  • the head of the first cutting edge plays a major role, and the first cutting edge head is set to be steeper, which can make the puncturing operation easier.
  • the tail of the first cutting edge plays a major role, and the tail of the first cutting edge is set to be gentler. The cutting operation is made easier.
  • the second cutting edge of the present invention is arranged to be protruded away from the first cutting edge, so that the cutting teeth can still maintain a certain strength when the first cutting edge is concave toward the second cutting edge.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

用于包装件的开启装置（100），包括底座（110）、帽（120）、切割器（130）、驱动连接装置和导向装置。切割器（130）至少部分地设置在底座（110）的开口（215）中。驱动连接装置将切割器（130）与帽（120）相联接，在帽（120）被初始拧松以打开开口（215）时，使得帽（120）驱动切割器（130）运动，以切割包装件的密封层。导向装置引导切割器（130）在帽（120）的驱动下沿着预定的路径运动。预定的路径包括第一起始螺旋段和第二后续螺旋段，在沿着这两段运动时，切割器（130）沿着轴线（X）移动的同时围绕轴线（X）旋转。响应于帽（120）转动一个特定的角度，切割器（130）沿第一起始螺旋段运动时在轴线（X）方向上移动的距离大于沿第二后续螺旋段运动时在轴线（X）方向上移动的距离，但是切割器（130）沿第一起始螺旋段运动时围绕轴线（X）旋转的角度小于沿第二后续螺旋段运动时围绕轴线（X）旋转的角度。

Description

用于包装件的开启装置以及包装件 技术领域
本公开的实施例大体上涉及一种用于包装件的开启装置，尤其涉及一种可再闭合的开启装置。
背景技术
一些包装件(例如饮品包装盒)的出口用密封层封住，该密封层例如为可刺破的膜。现有的用于这类包装件的一种开启装置包括能够切割密封层的切割器，该切割器能够在一个可拧开的帽的作用下朝向密封层运动，以切割开密封层，使得包装件的内容物能够从开口倒出。
发明内容
根据本公开的第一方面，本公开提供了一种用于包装件的开启装置，其包括底座、帽、切割器、驱动连接装置和导向装置。底座限定具有轴线的开口。帽与底座螺纹连接，以闭合和打开开口。切割器为筒形并具有设置在其远端的切割部。切割器至少部分地设置在底座的开口中。驱动连接装置将切割器与帽相联接，并配置为在帽被初始拧松以打开开口时，使得帽的转动驱动切割器运动，以切割包装件的密封层。导向装置将切割器与底座相联接，并配置为引导切割器在帽的驱动下沿着预定的路径运动。预定的路径包括第一起始螺旋段和第二后续螺旋段，在沿着第一起始螺旋段和第二后续螺旋段运动时，切割器沿着轴线移动的同时围绕轴线旋转。响应于帽转动一个特定的角度，切割器沿第一起始螺旋段运动时在轴线方向上移动的距离大于沿第二后续螺旋段运动时在轴线方向上移动的距离，但是切割器沿所述第一起始螺旋段运动时围绕轴线旋转的角度小于沿第二后续螺旋段运动时围绕轴线旋转的角度。
根据上述第一方面的开启装置，导向装置包括至少一个导向滑槽和容纳在至少一个导向滑槽中的至少一个导向滑块，至少一个导向滑槽设置在底座的内表面上，至少一个导向滑块设置在切割器的外表面上。
根据上述第一方面的开启装置，导向滑槽包括相互连接的第一滑槽段和第二滑槽段，第一滑槽段形成第一起始螺旋段，第二滑槽段形成所述第二后续螺旋段。从轴线方向看，第一滑槽段比第二滑槽段更陡峭。
根据上述第一方面的开启装置，还包括至少一个限位部。至少一个限位部设置在至少一个导向滑槽的第一滑槽段中，并靠近至少一个导向滑槽的起点位置。至少一个限位部配置为在切割器还未被帽驱动时与至少一个导向滑块相配合，将切割器限制在其初始位置中，并配置为在切割器被帽驱动时允许至少一个导向滑块越过至少一个限位部，以切割包装件的密封层。
根据上述第一方面的开启装置，至少一个限位部为至少一个限位凸起。
根据上述第一方面的开启装置，还包括至少一个止挡部。至少一个止挡部设置在至少一个导向滑槽的第二滑槽段中，并限定至少一个导向滑槽的终点位置。
根据上述第一方面的开启装置，至少一个导向滑槽包括四个导向滑槽，四个导向滑槽的第一滑槽段围绕轴线均匀布置。至少一个导向滑块包括四个导向滑块，四个导向滑块围绕轴线均匀地设置在切割器的外表面上，并且分别容纳在四个导向滑槽中。
根据上述第一方面的开启装置，至少一个导向滑块从切割器的外表面凸起，并随着远离切割器而渐缩。
根据上述第一方面的开启装置，切割器的切割部包括数个切割齿，每个切割齿包括位于切割齿的相对两侧的第一切割刃和第二切割刃。在切割器的旋转方向上，第一切割刃位于第二切割刃前方，第一切割刃和所述第二切割刃相交形成尖端。第一切割刃包括靠近尖端的第一切割刃头部和远离尖端的第一切割刃尾部。从轴线方向看，第一切割刃头部比第一切割刃尾部更陡峭。
根据上述第一方面的开启装置，第二切割刃包括靠近尖端的第二切割刃头部和远离尖端的第二切割刃尾部。第二切割刃头部和第二切割刃尾部共同形成远离第一切割刃凸起的形状。
根据上述第一方面的开启装置，驱动连接装置包括设置在帽上的推进柱和设置在切割器上的接合部。推进柱与接合部配合，以使得所帽的运动驱动切割器向密封层运动。
根据上述第一方面的开启装置，帽的内表面上设有两条帽螺纹，用于将帽与底座螺纹连接。两条帽螺纹的起点相差180度。
根据本公开的第二方面，本公开提供了一种包装件，其包括包装盒以及根据前述第一方面的开启装置，开启装置的底座连接在包装盒上。
附图说明
图1A是根据本公开的一个实施例的开启装置用在包装件上的使用状态图；
图1B是图1A所示的开启装置的分解图；
图2A是图1A所示的开启装置的底座的从前向后看的立体图；
图2B是图1A所示的开启装置的底座的从后向前看的立体图；
图2C是图2A所示的底座的侧视图；
图2D是沿图2C中的A-A线的剖视图；
图3A是图1A所示的开启装置的帽的从下向上看时第一视角的立体图；
图3B是图1A所示的开启装置的帽的从下向上看时第二视角的立体图；
图4A是图1A所示的开启装置的切割器的从下向上看的立体图；
图4B是图4A所示的切割器的俯视图；
图4C是沿图4B中的B-B线的剖视图；
图5A是图1A所示的开启装置处于关闭状态的立体图；
图5B是图1A所示的开启装置处于关闭状态的剖视图；
图6A是图1A所示的开启装置处于打开过程中的立体图；
图6B是图1A所示的开启装置处于打开过程中的剖视图；
图7是图1A所示的开启装置处于打开状态的立体图。
具体实施方式
下面将参考构成本说明书一部分的附图对本公开的各种具体实施方式进行描述。应该理解的是，虽然在本公开中使用表示方向的术语，诸如“前”、“后”、“上”、“下”、“左”、“右”、“顶”、“底”等描述本公开的各种示例结构部分和元件，但是在此使用这些术语只是为了方便说明的目的，基于附图中显示的示例方位而确定的。由于本公开所公开的实施例可以按照不同的方向设置，所以这些表示方向的术语只是作为说明而不应视作为限制。
图1A和1B示出了根据本公开的一个实施例的开启装置100的整体结构，其中，图1A是开启装置100用在包装件1中的使用状态图，图1B是开启装置100的分解图。
如图1A所示，开启装置100用于开启和关闭包装件1的包装盒10上的出口(未示出)。包装盒10的顶部上设有出口，出口上封装了密封层(未示出)，该密封层可以被切割开，以使得包装件1中的内容物可以从出口中倒出。开启装置100例如由塑料材料制成。包装盒10的形状可以为除了图1A所示以外的其他形状。
如图1B所示，开启装置100包括底座110、帽120、切割器130和防污圈140。底座110围绕包装盒10的出口上的密封层设置，并位于密封层上方。帽120与底座110螺纹连接，并能从底座110拧松或再次拧紧在底座110上。防污圈140与帽120一体形成，两者之间通过点状的减弱连接部145相互连接，且防污圈140固定连接至底座110。当相对于底座110首次拧松帽120时，减弱连接部145断裂，使得帽120与防污圈140分离。切割器130设置在帽120与底座110之间。切割器130能够在帽120从底座110上首次被拧松时在帽120的驱动下朝向密封层运动，以切割开密封层。为此，开启装置100还包括驱动连接装置，用于将帽120与切割器130相联接，使得帽120的运动能够驱动切割器130朝向密封层运动。开启装置100还包括导向装置，导向装置将切割器130与底座110相联接，用于引导切割器130在帽120的驱动下沿着预定的路径运动，从而以以下期望的方式切割密封层。
具体而言，该预定的路径包括第一起始螺旋段和第二后续螺旋段，在沿着第一起始螺旋段和第二后续螺旋段运动时，切割器130在沿着底座110的轴线X移动的同时围绕轴线X旋转，并且，响应于帽120转动一个特定的角度，切割器130沿第一起始螺旋段运动时在轴线X方向上移动的距离大于沿第二后续螺旋段运动时在轴线X方向上移动的距离，但是切 割器130沿第一起始螺旋段运动时围绕轴线X旋转的角度小于沿第二后续螺旋段运动时围绕轴线X旋转的角度。
根据本公开的实施例，驱动连接装置包括设置在帽120上的推进柱370(见图3A和3B)和设置在切割器130上的接合部420(见图4A和4B)，导向装置包括设置在底座110的内表面上的导向滑槽252(见图2A和2D)和设置在切割器130的外表面上的导向滑块453(见图4A-4C)，这将在下面详细介绍。图2A-2D示出了底座110的具体结构，其中，图2A为底座110的从前向后看的立体图，图2B是底座110从后向前看的立体图，图2C是底座110的侧视图，而图2D是沿图2C中的A-A线的剖视图。
如图2A和2B所示，底座110具有轴线X。底座110包括以轴线X为中心的筒形的颈部220、以及设置在颈部220的一个轴向端的凸缘230。颈部220限定用于倾倒包装件1的内容物(例如饮品)的开口215。凸缘230围绕颈部220并远离轴线X向外延伸，用于将底座110连接在包装盒10的顶部上。底座110围绕包装盒10上的密封层设置，因此，当密封层被切割开以后，密封层所覆盖的包装盒10上的出口与底座110的开口215相连通，使得包装件1中的内容物能够通过开启装置110的开口215倾倒出来。
如图2A和2B所示，底座110的颈部220的外表面上设有两条底座螺纹，分别为第一底座螺纹260和第二底座螺纹270。第一底座螺纹260和第二底座螺纹270用于与帽110上的螺纹啮合，以将帽120与底座110螺纹连接。帽120由此可以围绕轴线X转动，以拧紧在底座110上，或从底座110拧松，从而闭合或打开底座110的开口215。
第一底座螺纹260和第二底座螺纹270为两条独立于彼此的螺纹，两者错开布置。此外，第一底座螺纹260和第二底座螺纹270围绕底座110延伸的角度均小于360度。如图2A所示，第一底座螺纹260具有头端261和尾端263，在底座110的轴向方向上，头端261位于尾端263上方。如图2B所示，第二底座螺纹270具有头端271和尾端273，在底座110的轴向方向上，头端271位于尾端273上方。第一底座螺纹260的头端261与第二底座螺纹270的头端271沿周向错开180度。
通过设置两条独立的螺纹、以及使两条螺纹错开180度，在保证达到足够的螺纹连接强度的情况下，可以以较小的旋拧角度打开帽120，同时使得螺纹在底座110的轴向上所占用 的空间较小。因此，采用上述设置的螺纹与采用单条螺纹相比，在旋转相同角度的情况下，采用上述设置的螺纹帽120上升的距离更大，从而使得帽120更容易打开。
仍然如图2A和2B所示，底座110的内表面上设置有四个导向滑槽252，在图2A中可以看到其中两条导向滑槽，在图2B中可以看到另外两条导向滑槽。这四个导向滑槽252具有大体相同的设置。
如图2C和2D所示，每个导向滑槽252包括相互连接的第一滑槽段254和第二滑槽段256。第一滑槽段254比第二滑槽段256更远离底座110的凸缘230，因此，导向滑槽252的起点位置和终点位置分别位于第一滑槽段254和第二滑槽段256的远离彼此的端部处。第一滑槽段254与设置在切割器130的外表面上的导向滑块453相配合，限定预定路径中的第一起始螺旋段。第二滑槽段256与设置在切割器130的外表面上的导向滑块453相配合，限定预定路径中的第二后续螺旋段。从轴线X的方向上看，第一滑槽段254比第二滑槽段256更陡峭。在一些实施例中，第一滑槽段254和第二滑槽段256所形成的轨迹均为渐开线。在另一些实施例中，第一滑槽段254和第二滑槽段256所形成的轨迹也可以为其他类型的曲线。第一滑槽段254和第二滑槽段256设置为，响应于帽120转动一个特定的角度，切割器130(在第一滑槽段254的引导下)沿第一起始螺旋段运动时在轴线X方向上移动的距离大于(在第二滑槽段256的引导下)沿第二后续螺旋段运动时在轴线X方向上移动的距离，但是切割器130(在第一滑槽段254的引导下)沿第一起始螺旋段运动时围绕轴线X旋转的角度小于(在第二滑槽段256的引导下)沿第二后续螺旋段运动时围绕轴线X旋转的角度。
仍然如图2A和2D所示，第一滑槽段254在底座110的内表面上延伸的长度较短，而第二滑槽段256在底座110的内表面上延伸的长度较长。四个导向滑槽252的第一滑槽段254围绕轴线X均匀布置在底座110的内表面上。
在每个导向滑槽252的第一滑槽段254中设有限位部257，限位部257设置为靠近导向滑槽252的起点位置，在该起点位置设有滑槽入口251。限位部257与滑槽入口251之间形成保持空间，用于容纳切割器130的外表面上的导向滑块453(如图4A所示)。限位部257为从第一滑槽段254凸起的限位凸起。当切割器130还未被帽120驱动时，限位部257能够与设置在切割器130的外表面上的导向滑块453相配合，将导向滑块453保持在限位部257与滑槽入口251之间的保持空间中，从而将切割器130保持在其初始位置。并且，限位部257设置为当切割器130被帽120驱动时，切割器130能够越过限位部257，以沿着导向滑 槽252运动。为此，限位部257从第一滑槽段254凸起的高度设置为当切割器130还没有被帽120驱动时，切割器130的外表面上的导向滑块453与限位部257以一定的摩擦力接触彼此，而当切割器130被帽120驱动时，驱动力能够克服该摩擦力，从而使切割器130能够越过限位部257。
如图2D所示，在每个导向滑槽252的第二滑槽段256中设有止挡部259，止挡部259限定导向滑槽252的终点位置。止挡部259为从第二滑槽段256凸起的部件，当切割器130在导向滑槽252中运动至其外表面上的导向滑块453碰到止挡部259时，切割器130到达其终点位置。止挡部259能够将切割器130保持在其终点位置。
图3A-3D示出了帽120的具体结构。图3A是图1所示的开启装置100的帽120的从下向上看时第一视角的立体图，图3B是帽120的从下向上看时第二视角的立体图，其中，图3B在图3A的基础上旋转了一定角度。如图3A和3B所示，帽120具有轴线A，当帽120在底座上110上安装就位时，帽120与底座110同轴设置，即，帽120的轴线A与底座110的轴线X重合。帽120包括圆形的顶盖310和筒形侧壁320，侧壁320围绕顶盖310的边缘并沿着轴线A方向延伸。在侧壁320的内表面上设有用于与底座110上的螺纹240相啮合的螺纹383。帽120还包括推进柱370，推进柱370从顶盖310沿着轴线A方向朝向底座110延伸，并且推进柱370被至少部分地容纳在筒形侧壁320所形成的容纳空间中。推进柱370与侧壁320在径向方向上相隔一定距离，以使得底座110的颈部220能被容纳在推进柱370与侧壁320之间。如图3A和3B所示，帽120包括三个推进柱370，这三个推进柱370相对于轴线A对称设置。每个推进柱370还沿着圆周方向延伸，且三个推进柱370在相同的圆周上延伸。在其他一些实施例中，推进柱的数量不限于三个，例如为两个。
如图3B所示，推进柱370大体呈片状，其包括驱动边缘372。驱动边缘372包括靠近顶盖310的第一段边缘373和远离顶盖310的第二段边缘375，第二段边缘375与第一段边缘373相连接。第一段边缘373和第二段边缘375均相对于轴线A倾斜延伸，但是，第二段边缘375的倾斜度小于第一段边缘373的倾斜度。驱动边缘372与切割器130上的接合部420相接合(见图4A)，实现通过帽120的拧松操作(转动)驱动切割器130运动以进行切割操作。其中，当驱动边缘372的第一段边缘373驱动切割器130时，切割器130在底座 110的导向滑槽252的第一滑槽段254的引导下运动，当驱动边缘372的第二段边缘375驱动切割器130时，切割器130在底座110的导向滑槽252的第二滑槽段256的引导下运动。
如图3A和3B所示，帽120的内表面上设有两条帽螺纹383，这两条帽螺纹383的设置与底座110的外表面上的两条底座螺纹(即第一底座螺纹260和第二底座螺纹270)的设置是相对应的，以实现两者之间的螺纹啮合。
图4A-4C示出了切割器130的具体结构。图4A是切割器140的从下向上看的立体图，并且图4A中还包括显示单个切割齿的局部放大图，图4B是切割器130的俯视图，图4C是沿图4B中的B-B线的剖视图。
如图4A所示，切割器130包括筒形的切割器主体410，其具有轴线L。当切割器130在底座110中安装就位时，切割器主体410的轴线L与底座110的轴线X重合。切割器130包括设置在切割器主体410的一个轴向端的切割部435。切割部435包括数个切割齿460，用于切割包装盒10的密封层。数个切割齿460布置在同一圆周上，但在该圆周上并没有布满切割齿460，而是具有一个分离空间480。具体而言，如图4A所示，切割器130包括7个切割齿460，这7个切割齿460彼此相接地布置，在首个和尾个切割齿460之间设有所述分离空间480。7个切割齿大致上占据圆周的四分之三，而分离空间480大致占据圆周的四分之一。通过设置分离部480，使得密封层在切割操作完成后仍然能够部分地与包装件连接，而不会被全部切割下来。
每个切割齿460具有面向密封层的尖端462以及位于尖端462的相对两侧的第一切割刃463和第二切割刃465，第一切割刃463和第二切割刃465相交形成尖端462。在切割器130的旋转方向J1上，第一切割刃463位于第二切割刃465的前方。此外，第一切割刃463和第二切割刃465配置为使得在切割器130的旋转方向J1上，尖端462指向前方。
如图4C所示，第一切割刃463包括靠近尖端462的第一切割刃头部471和远离尖端462的第一切割刃尾部472，两者相互连接。从轴线L方向看，第一切割刃头部471比第一切割刃尾部472更陡峭。第一切割刃头部471和第一切割刃尾部472共同形成朝向第二切割刃465凹陷的第一切割刃463。第二切割刃465包括靠近尖端462的第二切割刃头部476和远离尖端462的第二切割刃尾部477，两者相互连接。第二切割刃头部476和第二切割刃尾 部477相对于轴线L具有不同的倾斜度，并且两者共同形成远离第一切割刃463凸起的第二切割刃465。如此设置的第一切割刃463和第二切割刃465所形成的尖端462指向(切割器130的旋转方向J1的)前方。
如图4A-4C所示，切割器130的内表面上设有接合部420，用于与帽120上的推进柱370相接合，使得帽120在被拧松时能够驱动切割器130执行切割操作。接合部420为从切割器130的内表面上凸起的肋状物。接合部420具有与帽120的推进柱370的驱动边缘372(如图3B所示)接合的前沿422(见图4B)。在一些实施例中，前沿422与切割器130的内表面之间形成锐夹角，以便前沿422与驱动边缘372更好地接合。
如图4A-4C所示，切割器130的外表面上设有导向滑块453，导向滑块453的数量与导向滑槽252的数量相同，每个导向滑块453与相应的一个导向滑槽252接合。四个导向滑块453围绕轴线J均匀地布置在切割器130的外表面上。每个导向滑块453在垂直于轴线J(和轴线X)的方向上延伸，并随着远离切割器130而渐缩。因此每个导向滑块453大体上呈截头圆锥状。导向滑块453设置为靠近切割器130的远离切割部435的一端。
图5A和5B示出了图1A所示的开启装置100处于关闭状态时各个部件之间的配合关系，其中，图5A是开启装置100处于关闭状态的立体图，图5B是开启装置100处于关闭状态的剖视图。
如图5A和5B所示，在开启装置100处于关闭状态时，帽120处于还未被初始拧松的初始位置，帽120的推进柱370上的驱动边缘372的与帽120的顶盖310相接的根部与切割器130的接合部420的前沿422接触，并且切割器130的导向滑块453位于底座110的导向滑槽252的第一滑槽段254中，并被限位部257保持在其初始位置中。
在包装件1还未被开启过时，其密封层处于未被切割的状态，密封层封闭包装盒10的出口。为了打开包装盒10的出口，先要将处于关闭状态(如图5A和5B所示)的开启装置100的帽120从底座110沿方向J1初始拧松，直至可以将帽120与底座110分离。而在帽120被拧松的过程中，帽120驱动切割器130朝向密封层运动。帽120从底座110拧松的过程分为两部分。在第一部分中，切割器130在帽120的驱动下沿着预定路径中的第一起始螺 旋段运动，在第二部分中，切割器130在帽120的驱动下沿着预定路径中的第二后续螺旋段运动。
在帽120从底座110拧松的第一部分过程中，帽120在转动的同时沿着轴线X远离底座110移动。随着帽120的运动，推进柱370上的驱动边缘372的第一段边缘373在图5A所示的从上到下的方向上逐渐与接合部420的前沿422接触。也就是说，接合部420的前沿422在图5A所示的从上到下的方向上沿着第一段边缘373移动。由此，在帽120的驱动下，并且在导向装置(导向滑块453和导向滑槽252)的引导下，切割器130沿着预定路径中的第一起始螺旋段运动。在该第一起始螺旋段中，切割器130在围绕轴线X沿方向J1转动的同时沿着轴线X朝向密封层直线运动，这使得切割器130的切割齿460的尖端462在密封层上刺破一个小洞。并且，随着切割器130的直线运动和旋转运动，切割齿460的第一切割刃头部471和第二切割刃头部476会继续刺破并切割密封层，从而使洞口扩大。由于导向滑槽252的第一滑槽段254设置得比较陡峭(即相对于轴线X倾斜度较小)，在第一起始螺旋段中，切割器130沿着轴线X朝向密封层直线运动的幅度较大，而其围绕轴线X转动的幅度较小。
在帽120从底座110拧松的第二部分过程中，接合部420的前沿422与推进柱370上的驱动边缘372的第二段边缘375接合，并且切割器130的导向滑块453在底座110的导向滑槽252的第二滑槽段256中运动。随着帽120进一步被拧松，推进柱370上的驱动边缘372的第二段边缘375在图5A所示的从上到下的方向上逐渐与接合部420的前沿422接触。也就是说，接合部420的前沿422在图5A所示的从上到下的方向上沿着第二段边缘375移动。由此，在帽120的驱动下，并且在导向装置(导向滑块453和导向滑槽252)的引导下，切割器130沿着预定路径中的第二后续螺旋段运动。在该第二后续螺旋段中，切割器130仍然在围绕轴线X沿方向J1转动的同时沿着轴线X朝向密封层直线运动。由于导向滑槽252的第二滑槽段256设置得比较平缓(即相对于轴线X倾斜度较大)，在第二后续螺旋段中，切割器130沿着轴线X朝向密封层直线运动的幅度较小，而其围绕轴线X转动的幅度较大。由此，切割齿460的第一切割刃463的尾部472和第二切割刃465的尾部477进一步切割密封层，直至帽120与底座110的螺纹啮合到达行程终点，即达到图6A和6B所示的状态。
由于第一切割刃463在旋转方向J1上位于第二切割刃465前方，在刺破和切割密封层时，主要起作用的是第一切割刃460。
图6A和6B示出了开启装置100处于打开过程中，其中，图6A是开启装置100处于打开过程中的立体图，图6B是开启装置100处于打开过程中的剖视图。图7是图1A所示的开启装置处于打开状态的立体图。
如图6A和6B所示，当帽120与底座110的螺纹啮合到达行程终点时，接合部420的前沿422也移动到驱动边缘372的第二段边缘375的末端，帽120可以从底座110移开(如图7所示)。
在开启装置100从图5A和5B所示的状态到达图6A和6B所示的状态的过程中，随着切割器130逐渐切割开密封层，切割器130逐渐进入包装盒10中，并将被切割开的密封层向其外侧折叠。由于密封层在一小段上与包装件连接，并且被挡在切割器130的外侧，密封层不会掉进包装件中，也不会阻挡包装件中的内容物从出口中倾倒出来。
本申请的发明人发现，现有的开启装置中存在以下三种方案来驱动切割器，如下：在第一种方案中，切割器在切割密封层时，首先做纯粹直线运动，然后做纯粹旋转运动；在第二种方案中，切割器在切割密封层时，首先做螺旋运动，然后做纯粹旋转运动；在第三种方案中，切割器在切割密封层时，首先做纯粹直线运动，然后做螺旋运动。
经过观察和研究，本公开的发明人发觉以上现有技术的切割器运动方式都有不足之处。其原因在于，切割密封层的过程分为两阶段：(1)用切割器刺破密封层的阶段，并在这一阶段希望被刺破的密封层具有较宽的刺破开口，以便下一步的切割，并且在这一阶段希望切割器有较大的向下(轴向)的力，以使得这一阶段的切割更加容易；(2)用切割器从密封层的被刺破处沿旋转方向进行切割的阶段。虽然切割器在这两个切割阶段中的作用不同，但都需要有一个向下(轴向)的力，尤其考虑到切割器的切割部沿其圆周上设有大体上呈三角形的切割齿。
发明人现在具体分析现有技术中三种驱动方案的缺陷，如下：
第一种方案的缺陷包括：(i)在用切割器刺破密封层的阶段，切割器只能沿轴向向下直线移动，没有旋转运动，在密封层上的刺破部较小，切割齿的刃不能充分发挥作用；(ii)在 用切割器从密封层的被刺破处沿旋转方向进行切割的阶段，由于只做纯粹旋转运动，而不做沿轴向向下的直线运动，切割阻力较大。
第二种方案的缺陷包括：(i)没有考虑在刺破阶段和切割阶段都需要施加向下的力，(ii)在单纯的水平旋转中，由于没有施加向下的力，切割阻力较大。
第三种方案的缺陷包括：(i)没有考虑在刺破阶段和切割阶段都需要施加向下的力，不能使整个密封层切割过程优化。
为了克服以上现有技术中三种方案中的缺陷，本申请技术方案如下：
本公开的方案通过设置底座上的导向滑槽，使切割器的预定运动轨迹分为两段，即，第一起始螺旋段和第二后续螺旋段。其中，在沿着第一起始螺旋段和第二后续螺旋段运动时，切割器在沿着底座轴线X移动的同时围绕轴线X旋转。并且，响应于帽转动一个特定的角度，切割器沿第一起始螺旋段运动时在轴线X方向上移动的距离大于沿第二后续螺旋段运动时在轴线X方向上移动的距离，但是切割器沿第一起始螺旋段运动时围绕轴线X旋转的角度小于沿第二后续螺旋段运动时围绕轴线X旋转的角度。
通过采用以上技术方案，本公开请克服了以上现有技术的缺陷，因为本公开的设置适应了对密封层的刺破阶段和切割阶段不同的需要，且优化了密封层的切割过程。具体而言，在对密封层主要进行刺破的阶段(即切割器沿第一起始螺旋段的运动)，切割器不仅沿轴线朝向密封层做直线运动，而且围绕轴线做旋转运动，并且直线运动的幅度较大，旋转运动的幅度较小，因此使得帽的驱动力主要用于驱动切割器直线运动，以便于刺破操作，但由于切割器同时也做旋转运动而使得更加容易刺破密封层。在对密封层主要进行切割的阶段(即切割器沿第二后续始螺旋段的运动)，切割器不仅围绕轴线做旋转运动，而且沿轴线朝向密封层做直线运动，并且旋转运动的幅度较大，直线运动的幅度较小，因此使得帽的驱动力主要用于驱动切割器旋转运动，以便于切割操作，但由于切割器同时也做直线运动而使得更加容易切割密封层。
此外，本公开通过设置每个切割齿的切割刃，使得位于旋转方向前方的第一切割刃的头部较陡而尾部较为平缓，更有利于切割齿进行刺破和切割操作。这是因为，在对密封层主要进行刺破的阶段(即切割器沿第一起始螺旋段的运动)，第一切割刃头部起主要作用，第一切割刃头部设为较陡可以使刺破操作更容易，在对密封层主要进行切割的阶段(即切割器沿第二后续始螺旋段的运动)，第一切割刃尾部起主要作用，第一切割刃尾部设为较平缓可以 使切割操作更容易。此外，本公开的第二切割刃设置为远离第一切割刃凸起，可以在第一切割刃朝向第二切割刃内凹的情况下，仍然使切割齿保持一定的强度。
尽管已经结合以上概述的实施例的实例描述了本公开，但是对于本领域中至少具有普通技术的人员而言，各种替代方案、修改、变化、改进和/或基本等同方案，无论是已知的或是现在或可以不久预见的，都可能是显而易见的。另外，本说明书中所描述的技术效果和/或技术问题是示例性而不是限制性的；所以本说明书中的披露可能用于解决其他技术问题和具有其他技术效果和/或可以解决其他技术问题。因此，如上陈述的本公开的实施例的实例旨在是说明性而不是限制性的。在不背离本公开的精神或范围的情况下，可以进行各种改变。因此，本公开旨在包括所有已知或较早开发的替代方案、修改、变化、改进和/或基本等同方案。

Claims (13)

  1. 用于包装件的开启装置(100)，其特征在于包括：
    底座(110)，所述底座(110)限定具有轴线(X)的开口(215)；
    帽(120)，所述帽(120)与所述底座(110)螺纹连接，以闭合和打开所述开口(215)；
    切割器(130)，所述切割器(130)为筒形并具有设置在其远端的切割部(435)，所述切割器(130)至少部分地设置在所述底座(110)的所述开口(215)中；
    驱动连接装置，所述驱动连接装置将所述切割器(130)与所述帽(120)相联接，并配置为在所述帽(120)被初始拧松以打开所述开口(215)时，使得所述帽(120)的转动驱动所述切割器(130)运动，以切割所述包装件的密封层；
    导向装置，所述导向装置将所述切割器(130)与所述底座(110)相联接，并配置为引导所述切割器(130)在所述帽(120)的驱动下沿着预定的路径运动；
    其中，所述预定的路径包括第一起始螺旋段和第二后续螺旋段，在沿着所述第一起始螺旋段和所述第二后续螺旋段运动时，所述切割器(130)沿着所述轴线(X)移动的同时围绕所述轴线(X)旋转；并且
    其中，响应于所述帽(120)转动一个特定的角度，所述切割器(130)沿所述第一起始螺旋段运动时在所述轴线(X)方向上移动的距离大于沿所述第二后续螺旋段运动时在所述轴线(X)方向上移动的距离，但是所述切割器(130)沿所述第一起始螺旋段运动时围绕所述轴线(X)旋转的角度小于沿所述第二后续螺旋段运动时围绕所述轴线(X)旋转的角度。
  2. 根据权利要求1所述的开启装置(100)，其特征在于：
    所述导向装置包括至少一个导向滑槽(252)和容纳在所述至少一个导向滑槽(252)中的至少一个导向滑块(453)，所述至少一个导向滑槽(252)设置在所述底座(110)的内表面上，所述至少一个导向滑块(453)设置在所述切割器(130)的外表面上。
  3. 根据权利要求2所述的开启装置(100)，其特征在于：
    所述导向滑槽(252)包括相互连接的第一滑槽段(254)和第二滑槽段(256)，所述第一滑槽段(254)形成所述第一起始螺旋段，所述第二滑槽段(256)形成所述第二后续螺旋段；
    其中，从所述轴线(X)方向看，所述第一滑槽段(254)比所述第二滑槽段(256)更陡峭。
  4. 根据权利要求3所述的开启装置(100)，其特征在于还包括：
    至少一个限位部(257)，所述至少一个限位部(257)设置在所述至少一个导向滑槽(252)的第一滑槽段(254)中，并靠近所述至少一个导向滑槽(252)的起点位置；
    其中，所述至少一个限位部(257)配置为在所述切割器(130)还未被所述帽(120)驱动时与所述至少一个导向滑块(453)相配合，将所述切割器(130)限制在其初始位置中，并配置为在所述切割器(130)被所述帽(120)驱动时允许所述至少一个导向滑块(453)越过所述至少一个限位部(257)，以切割所述包装件的密封层。
  5. 根据权利要求4所述的开启装置(100)，其特征在于：
    所述至少一个限位部(257)为至少一个限位凸起。
  6. 根据权利要求3所述的开启装置(100)，其特征在于还包括：
    至少一个止挡部(259)，所述至少一个止挡部(257)设置在所述至少一个导向滑槽(252)的第二滑槽段(256)中，并限定所述至少一个导向滑槽(252)的终点位置。
  7. 根据权利要求3所述的开启装置(100)，其特征在于：
    所述至少一个导向滑槽(252)包括四个导向滑槽(252)，所述四个导向滑槽(252)的所述第一滑槽段(254)围绕所述轴线(X)均匀布置；
    所述至少一个导向滑块(453)包括四个导向滑块(453)，所述四个导向滑块(453)围绕所述轴线(X)均匀地设置在所述切割器(130)的外表面上，并且分别容纳在所述四个导向滑槽(252)中。
  8. 根据权利要求2所述的开启装置(100)，其特征在于：
    所述至少一个导向滑块(453)从所述切割器(130)的外表面凸起，并随着远离所述切割器(130)而渐缩。
  9. 根据权利要求1所述的开启装置(100)，其特征在于：
    所述切割器(130)的切割部(435)包括数个切割齿(460)，每个切割齿(460)包括位于所述切割齿(460)的相对两侧的第一切割刃(463)和第二切割刃(465)，在所述切割器(130)的旋转方向上，所述第一切割刃(463)位于所述第二切割刃(465)前方，所述第一切割刃(463)和所述第二切割刃(465)相交形成尖端(462)；
    其中，所述第一切割刃(463)包括靠近所述尖端(462)的第一切割刃头部(471)和远离所述尖端(462)的第一切割刃尾部(472)，并且其中，从所述轴线(X)方向看，所述第一切割刃头部(471)比所述第一切割刃尾部(472)更陡峭。
  10. 根据权利要求9所述的开启装置(100)，其特征在于：
    所述第二切割刃(465)包括靠近所述尖端(462)的第二切割刃头部(476)和远离所述尖端(462)的第二切割刃尾部(477)，其中，所述第二切割刃头部(476)和所述第二切割刃尾部(477)共同形成远离所述第一切割刃(463)凸起的形状。
  11. 根据权利要求1所述的开启装置(100)，其特征在于：
    所述驱动连接装置包括设置在所述帽(120)上的推进柱(370)和设置在所述切割器(130)上的接合部(420)，所述推进柱(370)与所述接合部(420)相配合，以使得所述帽(120)的运动驱动所述切割器(130)向所述密封层运动。
  12. 根据权利要求1所述的开启装置(100)，其特征在于：
    所述帽(120)的内表面上设有两条帽螺纹(383)，用于将所述帽(120)与所述底座(110)螺纹连接，其中，所述两条帽螺纹(383)的起点相差180度。
  13. 一种包装件(1)，其特征在于包括：
    包装盒(10)；以及
    根据前述权利要求1-12中任一项所述的开启装置(100)，所述开启装置(100)的底座(110)连接在所述包装盒(10)上。
PCT/CN2024/100675 2023-06-26 2024-06-21 用于包装件的开启装置以及包装件 WO2025002002A1 (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202310756899 2023-06-26
CN202310756899.9 2023-06-26
CN202410788668.0A CN119190629A (zh) 2023-06-26 2024-06-18 用于包装件的开启装置以及包装件
CN202410788668.0 2024-06-18

Publications (1)

Publication Number Publication Date
WO2025002002A1 true WO2025002002A1 (zh) 2025-01-02

Family

ID=93937430

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/100675 WO2025002002A1 (zh) 2023-06-26 2024-06-21 用于包装件的开启装置以及包装件

Country Status (1)

Country Link
WO (1) WO2025002002A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005049439A1 (en) * 2003-11-18 2005-06-02 Tetra Laval Holdings & Finance Sa Reclosable opening device for sealed sheet material packages of pourable food products
CN101848841A (zh) * 2007-11-05 2010-09-29 利乐拉瓦尔集团及财务有限公司 用于可倾倒食品包装的可再封开口装置
US20160200491A1 (en) * 2013-09-05 2016-07-14 Deltona Innovations Ag Self-opening plastic closure
CN113968415A (zh) * 2020-07-24 2022-01-25 Sig技术股份公司 具有保护性切割元件引导部件的倾倒元件
CN216995715U (zh) * 2022-04-08 2022-07-19 内蒙古伊利实业集团股份有限公司 膜片切割结构、锁鲜包装盖及包装容器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005049439A1 (en) * 2003-11-18 2005-06-02 Tetra Laval Holdings & Finance Sa Reclosable opening device for sealed sheet material packages of pourable food products
CN101848841A (zh) * 2007-11-05 2010-09-29 利乐拉瓦尔集团及财务有限公司 用于可倾倒食品包装的可再封开口装置
US20160200491A1 (en) * 2013-09-05 2016-07-14 Deltona Innovations Ag Self-opening plastic closure
CN113968415A (zh) * 2020-07-24 2022-01-25 Sig技术股份公司 具有保护性切割元件引导部件的倾倒元件
CN216995715U (zh) * 2022-04-08 2022-07-19 内蒙古伊利实业集团股份有限公司 膜片切割结构、锁鲜包装盖及包装容器

Similar Documents

Publication Publication Date Title
US11718457B2 (en) Closure assembly
US6851576B2 (en) Closing device with a piercing element
US7036683B2 (en) Plastic closing device with a piercing element
CN102673859B (zh) 用于可倾倒食品包装的可再封开口装置
US7458486B2 (en) Self-opening closure for composite packagings or for container or bottle nozzles for sealing with film material
JPH0547061Y2 (zh)
US7886922B2 (en) Closing device comprising a non-continuously circular cutting ring
JP5079699B2 (ja) プラスチックフィルム製の閉鎖容器用の閉鎖体デバイス
US5221029A (en) Closure and applicator cap having a break-away, finger-engageable tip portion
JP2002503599A (ja) 包装に関する改良
EP1623931A1 (en) Paper container for fluid having spout plug
RU2555654C2 (ru) Насадка наливных горловин с режущим/пробойным зубом
US20120241471A1 (en) Plastic closure comprising a cutting and perforating device
JP2013525223A (ja) ソフトパッケージのためのスクリュークロージャ
BR112013027183B1 (pt) dente de corte de um dispositivo de corte de termoplástico
KR20200039743A (ko) 주출구 마개 및 주출구 마개를 구비하는 포장 용기
WO2025002002A1 (zh) 用于包装件的开启装置以及包装件
JP2020023342A (ja) 注出口栓及び注出口栓を備える包装容器
CN119190629A (zh) 用于包装件的开启装置以及包装件
KR20150144790A (ko) 컨테이너
CN219216036U (zh) 瓶盖及瓶子
CN212048603U (zh) 一种自启式红酒瓶塞
JP4573571B2 (ja) 容器開封装置
CN115489871A (zh) 瓶盖及瓶子
JP2023042927A (ja) 口栓、及び包装容器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24830647

Country of ref document: EP

Kind code of ref document: A1