WO2021068561A1 - 化妆品包装管 - Google Patents

化妆品包装管 Download PDF

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Publication number
WO2021068561A1
WO2021068561A1 PCT/CN2020/098512 CN2020098512W WO2021068561A1 WO 2021068561 A1 WO2021068561 A1 WO 2021068561A1 CN 2020098512 W CN2020098512 W CN 2020098512W WO 2021068561 A1 WO2021068561 A1 WO 2021068561A1
Authority
WO
WIPO (PCT)
Prior art keywords
spiral
bead
wall
fork
cosmetic packaging
Prior art date
Application number
PCT/CN2020/098512
Other languages
English (en)
French (fr)
Inventor
朱卫锋
房永庆
宋建华
Original Assignee
浙江阿克希龙舜华铝塑业有限公司
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
Application filed by 浙江阿克希龙舜华铝塑业有限公司 filed Critical 浙江阿克希龙舜华铝塑业有限公司
Priority to EP20873786.6A priority Critical patent/EP4042901A4/en
Priority to CN202080067606.0A priority patent/CN114554904A/zh
Priority to US17/765,848 priority patent/US12011076B2/en
Publication of WO2021068561A1 publication Critical patent/WO2021068561A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/06—Casings wherein movement of the lipstick or like solid is a screwing movement
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D2040/0025—Details of lipstick or like casings

Definitions

  • This application relates to the field of product packaging, in particular to an all-metal middle-beam core, a cosmetic packaging tube containing the middle-beam core, and a processing method for the middle-beam core and the packaging tube.
  • the packaging tube is used as a carrier for lipstick and other cosmetics
  • the middle beam core is its core component, which basically includes three parts: fork, bead, and spiral.
  • some products are sheathed with a metal center beam on the outside of the spiral, or the forks of some products are made of metal materials, while other parts are mostly made of polymer injection molding due to processing limitations.
  • plastics and other materials can be recycled and reused.
  • most of the existing packaging tubes are made of metal and plastic. Due to the difficulty of disassembly, it is often difficult to recycle and reuse.
  • the present application provides an all-metal middle beam core, which solves the problem that the traditional middle beam core is difficult to recycle.
  • the middle beam core includes a fork, a spiral that is rotatably sleeved on the fork, and a bead that is slidably mounted in the fork to carry the product.
  • the side wall of the fork is provided with a sliding groove extending in the axial direction.
  • the sliding block extending radially from the sliding groove, the inner wall of the spiral is provided with a feed thread acting on the sliding block; the fork, the bead, and the spiral are all made of metal.
  • the metal material is aluminum or aluminum alloy.
  • the forks, beads, and spirals are made of the same metal material.
  • a partial side wall of the bead protrudes outward in the radial direction to form the slider.
  • At least two sliders are evenly distributed along the circumferential direction of the beads.
  • the slider is embedded in the feed thread as a whole, or one or more protruding strips are formed on the surface of the slider, and each protruding strip is embedded in the feed thread.
  • the inner wall of the spiral forms the feed thread by cutting.
  • the screw is deformed by the pipe wall itself to form the feed thread.
  • the feed thread includes a threaded bottom wall and two oppositely arranged threaded side walls, and an included angle between the threaded side wall and the threaded bottom wall is 90°-145°.
  • the inner wall of the bead is provided with a limiting protrusion for clamping the product.
  • a partial side wall of the bead is cut by itself to form an ear piece, and the ear piece is bent radially inward to form the limiting protrusion.
  • the separable parts of the ear piece and the side wall of the bead are three segments of secant lines connected in sequence, which are respectively:
  • the first secant line extends along the circumference of the bead
  • the second secant line extends from one end of the first secant line to the top end along the bead axis;
  • the third secant line extends from the other end of the first secant line to the top end along the bead axis.
  • the separable parts of the ear piece and the side wall of the bead are three segments of secant lines connected in sequence, which are respectively:
  • the fourth secant line extends along the axis of the bead
  • the fifth secant line extends in the circumferential direction from a bead at one end of the fourth secant line
  • the sixth secant line extends from the other end of the fourth secant line in the circumferential direction of the bead, and the fifth secant line and the sixth secant line are on the same side of the fourth secant line.
  • the bead includes an inner tube and an outer tube that are sheathed with each other, and the outer wall of the outer tube is provided with the slider.
  • the inner wall of the inner cylinder is provided with a protruding rib extending in the axial direction for clamping the product.
  • the protruding rib is formed by the inner cylinder wall being recessed inward in the radial direction.
  • the application also provides a cosmetic packaging tube including the middle beam core, top cover and base.
  • the fork includes a first built-in section extending into the spiral, and a first operating section located outside the bottom end of the spiral in the axial direction, and the chute is opened in the first built-in section;
  • the base is fixedly connected with the first operating section, the spiral is at least partially exposed outside the base, and the exposed part has a smooth outer wall surface.
  • a positioning step is provided between the first built-in section and the first operating section, and the bottom end of the spiral and the positioning step abut against the limit.
  • the outer circumferential surface of the spiral is flush with the outer circumferential surface of the first operating section.
  • a sealing plate is provided at the bottom end of the first operating section.
  • the outer wall of the fork is provided with a positioning groove extending in a circumferential direction
  • the inner wall of the spiral is provided with a positioning convex point embedded in the positioning groove
  • the fork forms the positioning groove through the deformation of the tube wall itself.
  • the spiral is deformed by the tube wall itself to form the positioning convex point.
  • the outer wall of the fork is provided with a positioning groove extending in the circumferential direction
  • the inner wall of the spiral is provided with a positioning convex ring extending in the circumferential direction, and the positioning convex ring is embedded in the positioning groove.
  • the fork includes a second built-in section extending into the spiral, and a second operating section located outside the top end of the spiral in the axial direction, and the sliding groove is opened in the second built-in section, so The base is fixedly connected with the screw, and is accommodated in the base.
  • the outer wall of the spiral has a deformation corresponding to the feed thread.
  • the second operating section extends into the inside of the top cover.
  • the bead is an axially penetrating tubular structure, and includes a product bearing portion and an extension portion along the axial direction of the bead.
  • the sliding block is located at the extension portion; the tubular structure is located between the product bearing portion and the extension portion. There is a diameter-reduction zone between them, and the diameter-reduction zone forms a product limit ring on the inner wall of the tubular structure.
  • the base, the spiral, and the fork all have escape openings corresponding to the inner cavity of the tubular structure.
  • a middle sleeve is fixedly inserted into the opening of the base, the middle sleeve and the spiral have a gap in the axial direction of the base and serve as an axial positioning groove, and the outer circumference of the fork is provided There is a positioning ring inserted into the axial positioning groove.
  • the side wall of the fork protrudes outward in the radial direction to form the positioning ring.
  • both the spiral and the middle sleeve are in interference fit with the base.
  • one axial end of the base has an opening for inserting the fork, and the other axial end has a through hole.
  • the periphery of the through hole is a ring-shaped inward flanging.
  • the inset is offset.
  • the base is made of metal material and has a smooth outer peripheral surface.
  • the application also provides a method for processing the middle beam core, which is used for processing the middle beam core as described.
  • the middle beam core of the present application is made of metal material, and the product does not need to be disassembled during recycling, and can be recycled directly, and the operation is simple and convenient.
  • Fig. 1 is a schematic diagram of the structure of a cosmetic packaging tube in an embodiment
  • Fig. 2 is a schematic diagram of the structure of the middle beam core in Fig. 1;
  • Figure 3 is an exploded view of the middle beam core shown in Figure 2;
  • Fig. 4 is an internal structure diagram of the middle beam core shown in Fig. 2;
  • Figure 5 is a schematic view of the structure of the spiral in an embodiment
  • Fig. 6 is a schematic structural diagram of another embodiment of the spiral.
  • Figure 7 is an exploded view of the middle beam core in another embodiment
  • Fig. 8 is a schematic diagram of the structure of the inner cylinder in Fig. 7;
  • Fig. 9 is a schematic diagram of the structure of the outer cylinder in Fig. 8.
  • Figure 10 is an exploded view of a cosmetic packaging tube in another embodiment
  • Figure 11 is an internal structure diagram of the cosmetic packaging tube shown in Figure 10;
  • Fig. 12 is a schematic diagram of the structure of the beads in Fig. 10;
  • FIG. 13 is a schematic diagram of the structure of the middle sleeve in FIG. 10.
  • a component when a component is said to be “connected” with another component, it can be directly connected to the other component or there may also be a central component. When a component is considered to be “installed on” another component, it can be directly installed on another component or a centered component may exist at the same time.
  • a cosmetic packaging tube includes a base 5, a top cover 7 and a middle beam core, and the middle beam core is located inside a cavity enclosed by the base 5 and the top cover 7.
  • the middle beam core includes a fork 1, a spiral that is rotatably sleeved on the fork 1, a bead 3 slidably mounted in the fork 1 to carry the product, and the side wall of the fork 1 is provided with an axial extension
  • the outer wall of the bead 3 has a sliding block 31 extending radially from the sliding groove 11, and the inner wall of the spiral 2 has a feed thread 21 acting on the sliding block 31.
  • the axial direction is the length direction of the middle beam core, and is also the direction of expansion and contraction of the beads 3 when in use, and the radial direction refers to the direction perpendicular to the axial direction.
  • the screw 2 is rotated relative to the fork 1 to change the overlapping area of the feed thread 21 and the chute 11, so that the beads 3 and the product move in the axial direction.
  • the fork 1, the bead 3, and the spiral 2 are all made of metal, and the processing technology is more uniform, thereby reducing the manufacturing cost and facilitating recycling.
  • the metal material is aluminum or aluminum alloy.
  • the fork 1 includes a first built-in section 14 extending into the spiral 2, and a first operating section 15 located outside the bottom end of the spiral 2 in the axial direction.
  • the sliding groove 11 is opened In the first built-in section 14. The user touches the first operating section 15 and the screw 2 respectively, and rotates the two to drive the beads 3 to retract or extend out of the central beam core.
  • the first operating section 15 is fixedly connected to the base 5, which can be interference fit, bonding, or other fits.
  • the operation only needs to be pinched.
  • the spiral 2 is at least partially exposed outside the base 5, and the exposed part of the outer surface is smooth.
  • the middle beam of the traditional structure is omitted, and good tactile and visual effects can also be obtained.
  • the outer wall of the fork 1 is provided with a positioning groove 12 extending in the circumferential direction, and the inner wall of the screw 2 is provided with positioning convex points embedded in the positioning groove 12 twenty two.
  • the fork 1 forms a positioning groove 12 through the deformation of the tube wall itself.
  • the spiral 2 forms a positioning convex point 22 through the deformation of the tube wall itself.
  • the screw 2 When assembling, the screw 2 is sleeved on the outside of the fork 1 so that the positioning protrusion 22 is clamped into the positioning groove 12 to lock the axial relative position of the fork 1 and the screw 2 and allow the fork 1 to rotate relative to the screw 2.
  • the top opening of the spiral 2 is provided with a flanging 24 which is in position against the top of the fork 1.
  • the outer wall of the fork 1 is provided with a positioning groove extending in the circumferential direction
  • the inner wall of the spiral 2 is provided with a positioning convex ring 23 extending in the circumferential direction, and the positioning convex ring 23 is embedded in the positioning groove Inside.
  • a positioning step 16 is provided between the first built-in section 14 and the first operating section 15, and the bottom end of the spiral 2 and the positioning step 16 are in a position limit.
  • the outer circumferential surface of the spiral 2 is flush with the outer circumferential surface of the first operating section 15, so as to increase the aesthetics of the product and reduce possible collision parts with the outside world.
  • a sealing plate 17 is provided at the bottom end of the first operating section 15.
  • the sealing plate 17 makes the bottom end of the fork 1 a closed structure to prevent external contaminants from entering through the bottom end of the beads 3 and contaminating the paste in the beads 3.
  • the axial length of the first operating section 15 accounts for 1/8 to 1/5 of the axial length of the fork 1.
  • a partial side wall of the bead 3 protrudes outward in the radial direction to form the slider 31.
  • a part of the metal pipe wall is drawn toward the outside of the pipe to form a slider 31.
  • at least two sliders 31 are evenly distributed along the circumferential direction of the beads 3. As shown in FIGS. 11 and 12, the slider 31 is inserted into the feed screw 21 as a whole.
  • one or more protruding strips 311 are formed on the surface of the slider 31, and each protruding strip 311 is embedded in the feed screw 21.
  • the slider 31 is made of a metal material, and a more precise rib structure can be formed through a stretching process.
  • the feed thread 21 is also formed of metal material to ensure the accuracy of matching with the convex strip 311.
  • a protruding bar 311 is embedded in a feed thread 21, so that a slider 31 is matched with a plurality of feed threads 21 at the same time, so as to disperse the contact stress between the slider 31 and the feed thread 21, prevent local excessive deformation, and strengthen the beads 3. Stability of sliding.
  • the feed thread 21 is formed on the inner wall of the spiral 2 by cutting.
  • the screw 2 forms the feed thread 21 through the deformation of the pipe wall itself.
  • the pipe wall of the spiral 2 is rolled in a manner of rotation and axial feeding to form the feeding thread 21.
  • a pipe with a smooth outer peripheral surface is extruded with a die inside and outside the pipe, so that the inner peripheral surface of the pipe is formed with a feed thread 21.
  • the feed thread 21 includes a threaded bottom wall 211 and two oppositely arranged threaded side walls 212.
  • the included angle between the threaded side wall 212 and the threaded bottom wall 211 ie, in Figure 11 The angle a) is 90° ⁇ 145°.
  • the product is generally a paste.
  • the inner wall of the bead abuts against the paste through the limiting protrusion 32 or is inserted into the paste to further prevent the product from sliding in the axial direction.
  • the paste-like product can be pre-molded and then placed in the beads 3 along the axial direction, or it can be formed by injecting raw materials into the beads 3.
  • a partial side wall of the bead 3 is cut by itself to form an ear piece, and the ear piece is bent radially inward to form a limiting protrusion.
  • a wire groove can be cut along a non-closed path on the metal side wall of the bead 3, and then the lugs half-enclosed by the wire groove are pushed inward to form the limiting protrusion 32.
  • the detachable part of the ear piece and the side wall of the bead is three segments of secant lines connected in sequence, which are respectively the first secant line 323 extending in the circumferential direction of the bead, and the first secant line A second secant line 324 extending from one end of the first secant line 323 toward the top end along the bead axis, and a third secant line 325 extending from the other end of the first secant line 323 toward the top end along the bead axis.
  • the detachable part between the ear piece and the side wall of the bead is three segments of secant lines that are connected in sequence, which are respectively the fourth secant line 326 extending along the axial direction of the bead, and the fourth secant line is formed by the fourth secant line.
  • One end of the line 326 is a fifth secant line 327 extending in the circumferential direction of the bead, and a sixth secant line 328 extending from the other end of the fourth secant line 326 in the circumferential direction of the bead.
  • the fifth secant line 327 and the sixth secant line 328 are on the same side of the fourth secant line 326.
  • the ear piece has a connecting end 321 connected to the side wall of the bead 3 and a free end 322 extending into the bead 3.
  • the connecting end 321 is closer to the entrance of the bead 3 than the free end 322.
  • the limit protrusion 32 of the metal sheet structure avoids the product through elastic deformation, reducing the resistance of the product loading.
  • the free end 322 is inserted into the paste of the product to form a barbed structure to prevent the product from falling out of the beads 3.
  • the bead 3 includes an outer tube 301 and an inner tube 302 that are sheathed with each other.
  • the outer wall of the outer tube 301 is provided with a slider 31, and the inner wall of the inner tube 302 is provided There are ribs 303 extending in the axial direction.
  • the bottom end of the bead 3 is the base, and the top end of the bead 3 is the mouth; when the rib 303 extends from the base to the mouth, the height of the rib 303 in the radial direction gradually decreases.
  • the protruding rib 303 is formed by the inner cylinder wall being recessed inward in the radial direction.
  • the function of the protruding rib 303 is like a position limiting protrusion, which is mainly used to restrict the ointment from falling off.
  • the cosmetic packaging tube includes a base 5, a top cover 7 and a middle beam core, and the middle beam core is located inside the cavity enclosed by the base 5 and the top cover 7.
  • the middle beam core includes a fork 1, a spiral that is rotatably sleeved on the fork 1, a bead 3 slidably mounted in the fork 1 to carry the product, the side wall of the fork 1 is provided with a sliding groove 11 extending in the axial direction, and the outer wall of the bead 3
  • the sliding block 31 is provided with a sliding groove 11 extending in the radial direction, and the inner wall of the spiral 2 is provided with a feed thread 21 acting on the sliding block 31.
  • the fork 1, the bead 3, and the spiral 2 are all made of metal.
  • the fork 1 includes a second built-in section 18 extending into the spiral 2 and a second operating section 19 located outside the top end of the spiral in the axial direction.
  • the sliding groove 11 is opened in the second built-in section 18.
  • the base 5 When assembling, the base 5 is fixedly connected to the screw 2, and the screw 2 is contained in the base 5 as a whole, and the second operating section 19 is exposed from the base 5.
  • the base 5 and the screw 2 are generally connected by interference fit, of course, other methods such as bonding can be used.
  • the bead 3 is an axially penetrating tubular structure, and includes a product carrying portion 33 and an extension portion 34 along its own axis.
  • the slider 31 is located at the extension portion 34 and is limited
  • the position protrusion 32 is located on the product carrying portion 33.
  • the tubular structure has a reduced diameter area between the product carrying portion 33 and the extension portion 34, and the reduced diameter area constitutes a product limiting ring 35 on the inner wall of the tubular structure.
  • the limiting protrusion 32 mainly functions to prevent the product from rotating, and the product limiting ring 35 mainly functions to prevent the product from sliding in the axial direction.
  • the outer wall of the screw 2 has a deformation corresponding to the feed thread 21.
  • the feed thread 21 in this embodiment is generated by the radial deformation of the pipe wall of the spiral 2, and the deformation causes the outer wall of the spiral 2 to become an uneven structure.
  • the “smooth” in this application refers to the uneven structure corresponding to the shape of the feed thread 21, and does not strictly limit the surface roughness of the material used for the spiral 2.
  • the spiral 2 with a rough outer peripheral surface is also protected in this application. Within range.
  • the middle beam core can also include other additional parts, without seriously affecting the convenience of product disassembly and assembly, and The materials of these additional parts are not strictly limited.
  • the base 5 and the top cover 7 are also made of metal materials and have smooth outer peripheral surfaces.
  • the fork 1, the bead 3, the spiral 2 and the base 5 are made of the same metal material.
  • the screw 2, the fork 1 and the base 5 all have an escape port 4 corresponding to the inner cavity of the tubular structure.
  • One axial end of the base 5 has an opening for the insertion of the middle beam core, and the other axial end has a through hole.
  • the circumference of the through hole is an annular inward flange 51, and the end of the spiral 2 abuts against the inward flange 51 .
  • the opening of the screw 2 is fixedly inserted with a middle sleeve 6.
  • the middle sleeve 6 and the screw 2 have a gap in the axial direction of the base 5 and serve as an axial positioning groove.
  • the outer circumference of the fork 1 is provided with the axial positioning groove. ⁇ Locating ring 13.
  • the side wall of the fork 1 protrudes outward in the radial direction to form a positioning ring 13.
  • the middle sleeve 6 is an axially penetrating tubular structure, and includes a first plug-in portion 61 and a second plug-in portion 62 along its own axial direction, and one of the first plug-in portion 61 and the second plug-in portion 62 Space is separated by a limit ring 63.
  • the first plug-in portion 61 is plugged into the base 5 and fixed to the base 5 by interference fit.
  • the production process of the all-metal middle beam core includes: forming a radially outwardly convex slider 31 on the side wall of the bead 3, and forming an inverted lug by cutting the side wall of the bead 3 by itself. Assemble the bead 3 to the fork 1 with a sliding groove 11 on the side wall, the slider 31 extends out of the sliding groove 11 in the radial direction; on the inner wall of the spiral 2 with a smooth outer peripheral surface, a feed thread 21 acting on the slider 31 is formed ; Install the fork 1 into the screw 2, and make the slider 31 cooperate with the feed thread 21.
  • a radially convex slider is formed on the side wall of the outer cylinder 301, and a radially concave rib 303 is formed on the side wall of the inner cylinder 302, and the outer cylinder 301 and the inner cylinder 302 are assembled by interference fit Beads 3.
  • dies are used to squeeze the pipe inside and outside of the pipe respectively, so that the inner peripheral surface of the pipe is formed with a feed screw 21, and the outer peripheral surface of the pipe is deformed corresponding to the feed screw 21.
  • installing the fork 1 into the spiral 2 specifically includes: forming a circumferentially extending positioning groove 12 on the fork 1; forming a circumferentially uniformly distributed groove on the inner wall of the spiral 2 A plurality of positioning convex points 22; the spiral 2 is sleeved outside the fork 1, so that the positioning convex points 22 are embedded in the positioning groove 12.
  • installing the fork 1 into the spiral 2 specifically includes: sleeve the spiral 2 outside the fork 1; simultaneously squeeze the spiral 2 and the fork on the inner side of the fork 1 and the outer side of the spiral 2.
  • a circumferentially extending positioning groove 12 is formed on the fork 1, while a circumferentially extending positioning convex ring 23 is formed on the inner wall of the spiral 2 and embedded in the positioning groove.
  • This application also provides a production process for a cosmetic packaging tube.
  • the base 5 is fixedly connected to the bottom of the fork 1, and the top cover 7 is sleeved on the middle beam core. As shown in FIG. 1, the top cover 7 and The base 5 cooperates to encapsulate the middle beam core in the inner space enclosed by the two.
  • the base 5 and the screw 2 are interference fit, so that the screw 2 is completely contained in the base.
  • a middle sleeve 6 is provided at the mouth of the base 5, and the middle sleeve 6 is inserted into the base to have an interference fit and at the same time cooperate with the screw 2 to limit the axial movement of the fork.
  • the top cover 7 passes through the exposed part of the middle beam core, and cooperates with the base 5 and the middle sleeve 6 to encapsulate the middle beam core in the inner space of the three.

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Abstract

一种中束芯及包含该中束芯的化妆品包装管，中束芯包括叉子（1）、转动套设于叉子（1）的螺旋（2）、滑动安装于叉子（1）内以承载产品的珠子（3），叉子（1）的侧壁开设有沿轴向延伸的滑槽（11），珠子（3）的外壁带有在径向上延伸出滑槽（11）的滑块（31），螺旋（2）的内壁带有作用于滑块（31）的进给螺纹（21）；叉子（1）、珠子（3）、螺旋（2）三者均采用金属材质。中束芯采用金属材质，在回收利用时不需要对产品进行拆卸操作，可以直接进行回收利用，操作简单方便。

Description

化妆品包装管 技术领域
本申请涉及产品包装领域，特别是涉及一种全金属的中束芯、包含该中束芯的化妆品包装管及中束芯和包装管的加工方法。
 背景技术
包装管作为口红等化妆品的载具，中束芯是其核心部件，基本上包括叉子、珠子和螺旋三个零件。为了让产品外形美观，有些产品的螺旋外部会套设金属材质的中束，或者有些产品的叉子由金属材料制成的，而其它部件由于加工工艺限制，大多是由高分子材料注塑制得。随着对环保要求的提高，人们希望塑胶等材料可以回收再利用，如上所述，现有包装管大部分是由金属和塑胶共同制成，由于拆解困难，往往很难进行回收再利用。
 技术问题
本申请提供了一种全金属材质的中束芯，解决了传统中束芯难以回收再利用的问题。
 技术解决方案
中束芯，包括叉子、转动套设于叉子的螺旋、滑动安装于叉子内以承载产品的珠子，所述叉子的侧壁开设有沿轴向延伸的滑槽，所述珠子的外壁带有在径向上延伸出所述滑槽的滑块，所述螺旋的内壁带有作用于所述滑块的进给螺纹；所述叉子、珠子、螺旋三者均采用金属材质。
以下还提供了若干可选方式，但并不作为对上述总体方案的额外限定，仅仅是进一步的增补或优选，在没有技术或逻辑矛盾的前提下，各可选方式可单独针对上述总体方案进行组合，还可以是多个可选方式之间进行组合。
可选的，所述金属材质为铝或者铝合金。
可选的，所述叉子、珠子、螺旋三者采用相同的金属材质。
可选的，所述珠子的局部侧壁沿径向外凸构成所述滑块。
可选的，所述滑块沿珠子周向均匀分布至少两个。
可选的，所述滑块整体上嵌入进给螺纹，或滑块的表面形成有一个或多个凸条，各凸条嵌入进给螺纹。
可选的，所述螺旋的内壁通过切削的方式形成所述进给螺纹。
可选的，所述螺旋通过管壁自身形变形成所述进给螺纹。
可选的，所述进给螺纹包括螺纹底壁和相对布置的两螺纹侧壁，所述螺纹侧壁与所述螺纹底壁之间的夹角为90°~145°。
可选的，所述珠子的内壁设有用于卡接产品的限位凸起。
可选的，所述珠子的局部侧壁通过自身切割形成耳片，所述耳片沿径向向内弯折构成所述限位凸起。
可选的，所述耳片与珠子侧壁的可分离部位为依次连接的三段割线，分别为：
第一割线，沿珠子周向延伸；
第二割线，由第一割线的一端沿珠子轴向朝顶端延伸；
第三割线，由第一割线的另一端沿珠子轴向朝顶端延伸。
可选的，所述耳片与珠子侧壁的可分离部位为依次连接的三段割线，分别为：
第四割线，沿珠子轴向延伸；
第五割线，由第四割线的一端珠子沿周向延伸；
第六割线，由第四割线的另一端沿珠子周向延伸，且第五割线与第六割线处于第四割线的同一侧。
可选的，所述珠子包括相互穿套的内筒和外筒，所述外筒的外壁设置有所述滑块。
可选的，所述内筒的内壁设有用于卡接产品的沿轴向延伸的凸肋。
可选的，所述凸肋由内筒壁沿径向内凹陷形成。
本申请还提供了一种包括所述中束芯、顶盖和底座的化妆品包装管。
可选的，所述叉子包括伸入所述螺旋的第一内置段、以及在轴向上处于所述螺旋底端外侧的第一操作段，所述滑槽开设于所述第一内置段；所述底座与第一操作段固定连接，所述螺旋至少部分裸露在底座外，且裸露的部分具有光滑外壁面。
可选的，所述第一内置段和所述第一操作段之间设有定位台阶，所述螺旋的底端与所述定位台阶相抵限位。
可选的，所述螺旋的外周面与所述第一操作段的外周面平齐。
可选的，所述第一操作段的底端设有封板。
可选的，所述叉子的外壁设有沿周向延伸的定位凹槽，所述螺旋的内壁设有嵌入所述定位凹槽的定位凸点。
可选的，所述叉子通过管壁自身形变形成所述定位凹槽。
可选的，所述螺旋通过管壁自身形变形成所述定位凸点。
可选的，所述定位凸点为多个，且沿所述螺旋的周向均匀分布。
可选的，所述叉子的外壁设有沿周向延伸的定位凹槽，所述螺旋的内壁设有周向延伸的定位凸环，所述定位凸环嵌入所述定位凹槽内。
可选的，所述叉子包括伸入所述螺旋的第二内置段、以及在轴向上处于所述螺旋顶端外侧的第二操作段，所述滑槽开设于所述第二内置段，所述底座与螺旋固定连接，且容纳于所述底座内部。
可选的，所述螺旋的外壁带有与所述进给螺纹相应的形变。
可选的，所述第二操作段伸入所述顶盖内部。
可选的，所述珠子为轴向贯通的管状结构，沿自身轴向包括产品承载部以及延伸部，所述滑块位于所述延伸部；所述管状结构在所述产品承载部和延伸部之间带有缩径区，该缩径区在管状结构内壁构成产品限位环。
可选的，所述底座、所述螺旋和所述叉子均带有与所述管状结构的内腔相对应的避让口。
可选的，所述底座的开口部位固定插设有中套，所述中套与所述螺旋在所述底座的轴向上带有间隙且并作为轴向定位槽，所述叉子的外周设有置入该轴向定位槽的定位环。
可选的，所述叉子的侧壁沿径向外凸构成所述定位环。
可选的，所述螺旋和中套均与所述底座过盈配合。
可选的，所述底座的轴向一端带有供所述叉子插入的开口，轴向另一端带有通孔，该通孔的周缘为环形的内翻边，所述螺旋的端部与该内翻边相抵。
可选的，所述底座采用金属材质、且具有光滑的外周面。
本申请还提供一种中束芯的加工方法，用于加工如所述的中束芯。
 有益效果
本申请的中束芯采用金属材质，在回收利用时不需要对产品进行拆卸操作，可以直接进行回收利用，操作简单方便。
 附图说明
图1为一实施例中化妆品包装管的结构示意图；
图2为图1中的中束芯的结构示意图；
图3为图2所示中束芯的分解图；
图4为图2所示中束芯的内部结构图；
图5为一实施例中螺旋的结构示意图；
图6为另一实施例螺旋的结构示意图；
图7为另一实施例中的中束芯的分解图；
图8为图7中内筒的结构示意图；
图9为图8中外筒的结构示意图；
图10为另一实施例中化妆品包装管的分解图；
图11为图10所示化妆品包装管的内部结构图；
图12为图10中珠子的结构示意图；
图13为图10中的中套的结构示意图。
图中附图标记说明如下：
1、叉子；11、滑槽；12、定位凹槽；13、定位环；14、第一内置段；15、第一操作段；16、定位台阶；17、封板；18、第二内置段；19、第二操作段；2、螺旋；21、进给螺纹；211、螺纹底壁；212、螺纹侧壁；22、定位凸点；23、定位凸环；24、翻边；3、珠子；31、滑块；301、外筒；302、内筒；303、凸肋；311、凸条；32、限位凸起；321、连接端；322、自由端；323、第一割线；324、第二割线；325、第三割线；326、第四割线；327、第五割线；328、第六割线；33、承载部；34、延伸部；35、产品限位环；4、避让口；5、底座；51、内翻边；6、中套；61、第一插接部；62、第二插接部；63、限位环；7、顶盖。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，当组件被称为与另一个组件“连接”时，它可以直接与另一个组件连接或者也可以存在居中的组件。当一个组件被认为是“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是在于限制本申请。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
在一实施例中，如图1所示，一种化妆品包装管，包括底座5、顶盖7和中束芯，中束芯位于底座5和顶盖7围成的空腔内部。如图2、图3所示，中束芯包括叉子1、转动套设于叉子1的螺旋2、滑动安装于叉子1内以承载产品的珠子3，叉子1的侧壁开设有沿轴向延伸的滑槽11，珠子3的外壁带有在径向上延伸出滑槽11的滑块31，螺旋2的内壁带有作用于滑块31的进给螺纹21。
轴向即中束芯的长度方向，亦为使用时珠子3的伸缩运动方向，径向指与轴向垂直的方向。使用时，使螺旋2相对叉子1转动，改变进给螺纹21与滑槽11的重叠区域，从而使珠子3以及产品沿轴向做伸缩运动。
本实施例的叉子1、珠子3、螺旋2均采用金属材质，加工工艺更加统一，从而降低制造成本，且便于回收。具体的，所述金属材质为铝或者铝合金。
在一实施例中，如图3和4所示，叉子1包括伸入螺旋2的第一内置段14、以及在轴向上处于螺旋2底端外侧的第一操作段15，滑槽11开设于第一内置段14。使用者通过分别接触第一操作段15和螺旋2，并使两者相对转动，来驱动珠子3缩入或伸出中束芯。
在一实施例中，如图1、图2、图3所示，第一操作段15与底座5固定连接，可以是过盈配合，也可以是粘接，或者其它配合，操作时只需要捏住底座即可。该结构中螺旋2至少部分裸露在底座5外，且裸露的部分外表面是光滑的，省略了传统结构的中束，同样可以获得良好的触感和视觉效果。
为了实现螺旋2和叉子1轴向固定，如图4和5所示，叉子1的外壁设有沿周向延伸的定位凹槽12，螺旋2的内壁设有嵌入定位凹槽12的定位凸点22。叉子1通过管壁自身形变形成定位凹槽12。螺旋2通过管壁自身形变形成定位凸点22。定位凸点22为多个，且沿螺旋2的周向均匀分布。组装时，将螺旋2套在叉子1的外部，使定位凸点22卡入定位凹槽12内，从而锁定叉子1和螺旋2的轴向相对位置，并允许叉子1相对螺旋2转动。螺旋2的顶端开口处带有与叉子1的顶端相抵限位的翻边24。
在一实施例中，如图6所示，叉子1的外壁设有沿周向延伸的定位凹槽，螺旋2的内壁设有周向延伸的定位凸环23，定位凸环23嵌入定位凹槽内。
在一实施例中，如图4所示，第一内置段14和第一操作段15之间设有定位台阶16，螺旋2的底端与定位台阶16相抵限位。如图1所示，螺旋2的外周面与第一操作段15的外周面平齐，以增加产品美观度，并减少与外界可能的碰撞部位。
如图4所示，第一操作段15的底端设有封板17。封板17使叉子1的底端为封闭结构，避免外界污染物经由珠子3的底端进入而污染珠子3内的膏体。在一实施例中，第一操作段15的轴向长度占叉子1的轴向长度的1/8~1/5。
在一实施例中，珠子3的局部侧壁沿径向外凸构成滑块31。例如，将金属管壁的局部朝管外拉深形成滑块31。具体的，滑块31沿珠子3周向均匀分布至少两个。如图11和12所示，滑块31整体上嵌入进给螺纹21。
具体的，在一实施例中，如图3所示，滑块31的表面形成有一个或多个凸条311，各凸条311嵌入进给螺纹21。例如，滑块31采用金属材质，通过拉伸工艺能够形成较精密的凸条结构。进给螺纹21也采用金属材质形成，保证与凸条311适配的精密度。一个凸条311嵌入一个进给螺纹21内，使一个滑块31同时与多个进给螺纹21相配合，从而分散滑块31与进给螺纹21的接触应力，防止局部过度变形，增强珠子3滑动的稳定性。
形成进给螺纹21的方式有多种，在一实施例中，在螺旋2的内壁通过切削的方式形成进给螺纹21。在另一实施例中，螺旋2通过管壁自身形变形成进给螺纹21。
具体的，在其中一实施例中，通过旋转与轴向给进相配合的方式滚压螺旋2的管壁，可形成进给螺纹21。
具体的，在其中一实施例中，在管件内外分别使用模具挤压具有光滑外周面的管件，使管件的内周面形成进给螺纹21。
在一实施例中，如图11所示，进给螺纹21包括螺纹底壁211和相对布置的两螺纹侧壁212，螺纹侧壁212与螺纹底壁211之间的夹角（即图11中的角a）为90°~145°。
产品一般为膏体，为了保证产品牢固地固定于珠子3内，珠子的内壁通过限位凸起32与膏体相抵靠或插接于膏体内部，可进一步防止产品沿轴向滑动。
膏状的产品可以预制成型后沿轴向装入珠子3内，也可以在将原材料注入珠子3内成型。限位凸起32的加工方式可以有多种，例如朝内冲压珠子3的侧壁，使侧壁的局部朝内凸出变形，在珠子3的外侧呈现为凹面。
为方便将预先固化的产品沿轴向装入珠子3内，作为优选方案，珠子3的局部侧壁通过自身切割形成耳片，耳片沿径向向内弯折构成限位凸起。具体的，可以在珠子3的金属侧壁沿非闭合路径切割出线槽，再将被线槽半包围的耳片朝内推压，形成限位凸起32。
在一实施例中，如图4所示，耳片与珠子侧壁的可分离部位为依次连接的三段割线，分别为沿珠子周向延伸的第一割线323、由第一割线323的一端沿珠子轴向朝顶端延伸的第二割线324、由第一割线323的另一端沿珠子轴向朝顶端延伸的第三割线325。
在另一实施例中，如图11所示，耳片与珠子侧壁的可分离部位为依次连接的三段割线，分别为沿珠子轴向延伸的第四割线326、由第四割线326的一端珠子沿周向延伸的第五割线327、由第四割线326的另一端沿珠子周向延伸的第六割线328。第五割线327与第六割线328处于第四割线326的同一侧。
具体的，如图4和11所示，耳片具有连接于珠子3侧壁的连接端321、以及伸入珠子3内的自由端322，连接端321比自由端322更靠近珠子3的入口。向珠子3内装入产品时，金属片结构的限位凸起32通过弹性形变避让产品，减少产品装入的阻力。产品装入珠子3后，当出现产品沿轴向脱出珠子3的趋势时，自由端322插入产品的膏体内，形成倒刺结构，防止产品从珠子3内脱出。
在其中一实施中，如图7、图8、图9所示，珠子3包括相互穿套的外筒301和内筒302，外筒301的外壁设置有滑块31，内筒302的内壁设置有沿轴向延伸的凸肋303。珠子3的底端为基部，珠子3的顶端为口部；凸肋303从基部朝向口部延伸时，凸肋303在径向上的高度逐渐减小。在其中一实施例中，凸肋303由内筒壁沿径向内凹陷形成。凸肋303的功能如同限位凸起，主要用于限制膏体发生脱落。
在另一实施中，如图10、图11所示，化妆品包装管包括底座5、顶盖7和中束芯，中束芯位于底座5和顶盖7围成的空腔内部。中束芯包括叉子1、转动套设于叉子1的螺旋2、滑动安装于叉子1内以承载产品的珠子3，叉子1的侧壁开设有沿轴向延伸的滑槽11，珠子3的外壁带有在径向上延伸出滑槽11的滑块31，螺旋2的内壁带有作用于滑块31的进给螺纹21。
本实施例的叉子1、珠子3、螺旋2均采用金属材质。
如图10、图11所示，叉子1包括伸入螺旋2的第二内置段18、以及在轴向上处于螺旋顶端外侧的第二操作段19，滑槽11开设于第二内置段18。
组装时，底座5与螺旋2固定连接，且螺旋2整体容纳于底座5内部，第二操作段19露出底座5。底座5和螺旋2一般通过过盈配合连接，当然可以是粘接等其它方式。
在一实施例中，如图10、图11、12所示，珠子3为轴向贯通的管状结构，沿自身轴向包括产品承载部33以及延伸部34，滑块31位于延伸部34，限位凸起32位于产品承载部33。管状结构在产品承载部33和延伸部34之间带有缩径区，该缩径区在管状结构内壁构成产品限位环35。限位凸起32主要起防止产品转动的作用，产品限位环35主要起阻止产品轴向滑动的作用。
如图10和11所示，螺旋2的外壁带有与进给螺纹21相应的形变。本实施例中的进给螺纹21是通过螺旋2的管壁沿径向发生形变产生的，该形变导致螺旋2的外壁成为凹凸不平的结构。本申请的“光滑”是相对于这种与进给螺纹21形状对应的凹凸结构而言，并不严格限定螺旋2所用材质的表面粗糙度，具有粗糙外周面的螺旋2同样在本申请的保护范围内。
本申请所谓的“全金属”特指叉子1、珠子3、螺旋2这三个主要部件，显然，中束芯还可以包括其它附加零件，在不严重影响产品拆装便利性的情况下，并不严格限制这些附加零件的材质。
在一实施例中，底座5和顶盖7也采用金属材质、且具有光滑的外周面。
在一实施例中，叉子1、珠子3、螺旋2、底座5四者采用相同的金属材质。
螺旋2、叉子1和底座5均带有与管状结构的内腔相对应的避让口4，通过设置避让口4，在中束芯内装入产品时，可以采用从底端装入的方式。
底座5的轴向一端带有供中束芯插入的开口，轴向另一端带有通孔，该通孔的周缘为环形的内翻边51，螺旋2的端部与该内翻边51相抵。
螺旋2的开口部位固定插设有中套6，中套6与螺旋2在底座5的轴向上带有间隙且并作为轴向定位槽，叉子1的外周设有置入该轴向定位槽的定位环13。叉子1的侧壁沿径向外凸构成定位环13。
如图13所示，中套6为轴向贯通的管状结构，沿自身轴向包括第一插接部61和第二插接部62，第一插接部61和第二插接部62之间通过限位环63隔开。第一插接部61插接于底座5内，并通过过盈配合的方式与底座5固定。
在一实施例中，所述全金属的中束芯的生产工艺包括：在珠子3侧壁加工形成径向外凸的滑块31，以及通过珠子3侧壁的自身切割形成内翻的耳片；将珠子3装配至侧壁开有滑槽11的叉子1，滑块31在径向上延伸出滑槽11；在具有光滑外周面的螺旋2的内壁形成作用于滑块31的进给螺纹21；将叉子1安装至螺旋2内，且使滑块31与进给螺纹21相配合。
在另一实施例中，在外筒301侧壁加工形成径向外凸的滑块，在内筒302侧壁加工形成径向凹陷的凸肋303，将外筒301和内筒302过盈配合组装成珠子3。
在另一实施例中，在管件内外分别使用模具挤压管件，使管件的内周面形成进给螺纹21，同时管件的外周面形成与进给螺纹21相应的形变。
在一实施例中，如图4和5所示，将叉子1安装至螺旋2内具体包括：在叉子1上形成周向延伸的定位凹槽12；在螺旋2的内壁形成沿周向均匀分布的多个定位凸点22；将螺旋2套在叉子1外，使定位凸点22嵌入定位凹槽12内。
在另一实施例中，如图6所示，将叉子1安装至螺旋2内具体包括：将螺旋2套在叉子1外；在叉子1的内侧和螺旋2的外侧同时挤压螺旋2和叉子1，在叉子1上形成周向延伸的定位凹槽12，同时在螺旋2的内壁形成周向延伸、并嵌入定位凹槽内的定位凸环23。
本申请还提供了化妆品包装管的生产工艺，在一实施例中，将底座5与叉子1的底部固定连接，将顶盖7套在中束芯上，如图1所示，顶盖7与底座5配合，将中束芯封装在两者合围的内部空间中。
在另一实施例中，将底座5与螺旋2过盈配合，使得螺旋2完全容纳在底座内。在底座5的口部设置中套6，中套6插入底座内，与其过盈配合，同时与螺旋2配合限制叉子轴向移动。顶盖7穿套在中束芯裸露的部分，与底座5、中套6配合将中束芯封装在三者的内部空间中。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。不同实施例中的技术特征体现在同一附图中时，可视为该附图也同时披露了所涉及的各个实施例的组合例。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (37)

  1. 中束芯，包括叉子、转动套设于叉子的螺旋、滑动安装于叉子内以承载产品的珠子，所述叉子的侧壁开设有沿轴向延伸的滑槽，所述珠子的外壁带有在径向上延伸出所述滑槽的滑块，所述螺旋的内壁带有作用于所述滑块的进给螺纹；其特征在于，所述叉子、珠子、螺旋三者均采用金属材质。
  2. 根据权利要求1所述的中束芯，其特征在于，所述金属材质为铝或者铝合金。
  3. 根据权利要求2所述的中束芯，其特征在于，所述叉子、珠子、螺旋三者采用相同的金属材质。
  4. 根据权利要求1所述的中束芯，其特征在于，所述珠子的局部侧壁沿径向外凸构成所述滑块。
  5. 根据权利要求1所述的中束芯，其特征在于，所述滑块沿珠子周向均匀分布至少两个。
  6. 根据权利要求1所述的中束芯，其特征在于，所述滑块整体上嵌入进给螺纹，或滑块的表面形成有一个或多个凸条，各凸条嵌入进给螺纹。
  7. 根据权利要求1所述的中束芯，其特征在于，所述螺旋的内壁通过切削的方式形成所述进给螺纹。
  8. 根据权利要求1所述的中束芯，其特征在于，所述螺旋通过管壁自身形变形成所述进给螺纹。
  9. 根据权利要求1所述的中束芯，其特征在于，所述进给螺纹包括螺纹底壁和相对布置的两螺纹侧壁，所述螺纹侧壁与所述螺纹底壁之间的夹角为90°~145°。
  10. 根据权利要求1所述的中束芯，其特征在于，所述珠子的内壁设有用于卡接产品的限位凸起。
  11. 根据权利要求10所述的中束芯，其特征在于，所述珠子的局部侧壁通过自身切割形成耳片，所述耳片沿径向向内弯折构成所述限位凸起。
  12. 根据权利要求11所述的中束芯，其特征在于，所述耳片与珠子侧壁的可分离部位为依次连接的三段割线，分别为：
    第一割线，沿珠子周向延伸；
    第二割线，由第一割线的一端沿珠子轴向朝顶端延伸；
    第三割线，由第一割线的另一端沿珠子轴向朝顶端延伸。
  13. 根据权利要求11所述的中束芯，其特征在于，所述耳片与珠子侧壁的可分离部位为依次连接的三段割线，分别为：
    第四割线，沿珠子轴向延伸；
    第五割线，由第四割线的一端珠子沿周向延伸；
    第六割线，由第四割线的另一端沿珠子周向延伸，且第五割线与第六割线处于第四割线的同一侧。
  14. 根据权利要求1所述的中束芯，其特征在于，所述珠子包括相互穿套的内筒和外筒，所述外筒的外壁设置有所述滑块。
  15. 根据权利要求14所述的中束芯，其特征在于，所述内筒的内壁设有用于卡接产品的沿轴向延伸的凸肋。
  16. 根据权利要求15所述的中束芯，其特征在于，所述凸肋由内筒壁沿径向内凹陷形成。
  17. 化妆品包装管，包括底座、顶盖和如权利要求1-16任一所述的中束芯。
  18. 根据权利要求1所述的化妆品包装管，其特征在于，所述叉子包括伸入所述螺旋的第一内置段、以及在轴向上处于所述螺旋底端外侧的第一操作段，所述滑槽开设于所述第一内置段；所述底座与第一操作段固定连接，所述螺旋至少部分裸露在底座外，且裸露的部分具有光滑外壁面。
  19. 根据权利要求18所述的化妆品包装管，其特征在于，所述第一内置段和所述第一操作段之间设有定位台阶，所述螺旋的底端与所述定位台阶相抵限位。
  20. 根据权利要求19所述的化妆品包装管，其特征在于，所述螺旋的外周面与所述第一操作段的外周面平齐。
  21. 根据权利要求18所述的化妆品包装管，其特征在于，所述第一操作段的底端设有封板。
  22. 根据权利要求18所述的化妆品包装管，其特征在于，所述叉子的外壁设有沿周向延伸的定位凹槽，所述螺旋的内壁设有嵌入所述定位凹槽的定位凸点。
  23. 根据权利要求22所述的化妆品包装管，其特征在于，所述叉子通过管壁自身形变形成所述定位凹槽。
  24. 根据权利要求22所述的化妆品包装管，其特征在于，所述螺旋通过管壁自身形变形成所述定位凸点。
  25. 根据权利要求22所述的化妆品包装管，其特征在于，所述定位凸点为多个，且沿所述螺旋的周向均匀分布。
  26. 根据权利要求18所述的化妆品包装管，其特征在于，所述叉子的外壁设有沿周向延伸的定位凹槽，所述螺旋的内壁设有周向延伸的定位凸环，所述定位凸环嵌入所述定位凹槽内。
  27. 根据权利要求17所述的化妆品包装管，其特征在于，所述叉子包括伸入所述螺旋的第二内置段、以及在轴向上处于所述螺旋顶端外侧的第二操作段，所述滑槽开设于所述第二内置段，所述螺旋与底座固定连接，且容纳于所述底座内部。
  28. 根据权利要求27所述的化妆品包装管，其特征在于，所述螺旋的外壁带有与所述进给螺纹相应的形变。
  29. 根据权利要求27所述的化妆品包装管，其特征在于，所述第二操作段伸入所述顶盖内部。
  30. 根据权利要求27所述的化妆品包装管，其特征在于，所述珠子为轴向贯通的管状结构，沿自身轴向包括产品承载部以及延伸部，所述滑块位于所述延伸部；所述管状结构在所述产品承载部和延伸部之间带有缩径区，该缩径区在管状结构内壁构成产品限位环。
  31. 根据权利要求30所述的化妆品包装管，其特征在于，所述底座、所述螺旋和所述叉子均带有与所述管状结构的内腔相对应的避让口。
  32. 根据权利要求37所述的化妆品包装管，其特征在于，所述底座的开口部位固定插设有中套，所述中套与所述螺旋在所述底座的轴向上带有间隙且并作为轴向定位槽，所述叉子的外周设有置入该轴向定位槽的定位环。
  33. 根据权利要求32所述的化妆品包装管，其特征在于，所述叉子的侧壁沿径向外凸构成所述定位环。
  34. 根据权利要求32所述的化妆品包装管，其特征在于，所述螺旋和中套均与所述底座过盈配合。
  35. 根据权利要求27所述的化妆品包装管，其特征在于，所述底座的轴向一端带有供所述叉子插入的开口，轴向另一端带有通孔，该通孔的周缘为环形的内翻边，所述螺旋的端部与该内翻边相抵。
  36. 根据权利要求17所述的化妆品包装管，其特征在于，所述底座采用金属材质、且具有光滑的外周面。
  37. 中束芯的加工方法，其特征在于，用于加工如权利要求1~16中任一项所述的中束芯。
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CN110801095A (zh) 2020-02-18
CN114554904A (zh) 2022-05-27
EP4042901A4 (en) 2024-01-10

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