A recyclable environmentally friendly lipstick tube

Abstract

The invention discloses a 100% recyclable environmentally friendly lipstick tube, comprising a middle bundle core and an outer sleeve that rotates and cooperates with the outside, the middle bundle core is matched with an axially slidable lipstick tube, the inner wall surface of the outer sleeve has a spiral groove, the middle bundle core has a guide groove along the axial direction, and the outer surface of the lipstick tube is provided with a raised platform column, the platform column passes through the guide groove of the middle bundle core and slides with the spiral groove of the inner wall surface of the outer sleeve; a small section of the rear end outer peripheral surface of the middle bundle core is a hand-held section, the outer periphery of the middle bundle core close to the rear end hand-held section is provided with an annular convex rib, the inner peripheral surface of the outer sleeve and the annular groove of the middle bundle core are adapted to be rotatable with each other, and the outer sleeve, the middle bundle core and the lipstick tube are all made of PET. The invention has a novel structure, is safe and hygienic, transparent and smooth, operates smoothly and meets environmental protection standards, the materials of the three components are consistent, the contents can be recycled after use without sorting, and meet environmental protection requirements, all materials are non-toxic materials, and the risk of metal spring pollution in the prior art is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of cosmetic packaging, and in particular to a novel environmentally friendly cosmetic lipstick tube structure. Background Art

[0002] With the development of society, cosmetics and skin care products, including cream cosmetics such as foundation bars, eye shadow sticks, blush bars, concealer sticks, lip balms, body fragrance creams, perfume creams, etc., are generally referred to as lipsticks. Today's lipsticks are used and have generally appeared in the lives of the public. Lipsticks and lip sticks in lipsticks are products that make lips rosy and shiny, moisturize, protect lips, increase facial beauty, and modify lip contours to have a foil effect, and their related cream cosmetics and skin care products have also become one of the essential beauty cosmetics for women, which can show the charm and charm of women. Lipstick or its related cream cosmetics and skin care products usually have the advantages of considerable ease of use and durability, and are easy to carry and easy to apply, and are more popular with women. However, existing lipstick packaging products have various defects, or complex structure and large production cost, or pollution using metal springs, or opaque appearance and difficult to distinguish the color of the contents, or improper structure and inconvenience in operation, especially the mixing of materials for each part of the tube body so that it cannot be recycled.

[0003] It is well known that the world today is seriously polluted and resources are scarce, especially in the field of cosmetics, where plastic packaging is particularly common. In addition, existing cosmetic packaging, such as lipstick tubes, uses springs as reset mechanisms, so discarded lipstick tube packaging cannot be recycled. However, for the sake of environmental protection, energy saving and secondary utilization, it is necessary to manufacture recyclable cosmetic packaging for social development. Summary of the invention

[0004] The purpose of the present invention is to overcome the many structural and environmental defects of the lipstick tube in the prior art, and to provide an environmentally friendly and economical lipstick tube structure with novel structure, safety, hygiene, no internal pollution, transparency, smoothness and beauty, adjustable lipstick extension length and the ability to recycle the packaging as a whole after the paste is used up.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A recyclable environmentally friendly lipstick tube, characterized in that it comprises a bifurcated middle bundle core, a cylindrical outer sleeve is rotatably matched on the outside of the middle bundle core, a lipstick tube that can slide axially is matched inside the middle bundle core, a spiral groove is formed on the inner wall surface of the outer sleeve, a guide groove is formed on the middle bundle core along the axial direction, and a raised platform is provided on the outer surface of the lipstick tube, which passes through the guide groove of the middle bundle core and slides with the spiral groove on the inner wall surface of the outer sleeve; a small section of the outer peripheral surface of the rear end of the middle bundle core is a hand-held section, and at least one annular groove\annular convex rib is provided on the outer periphery of the middle bundle core near the rear end hand-held section, and the annular groove\annular convex rib of the outer sleeve and the middle bundle core are connected. The inner circumference of the rib matching part is adapted with annular convex ribs\annular grooves that can rotate with each other; at the front end of the annular groove\annular convex rib of the middle bundle core, there is an elastic arched elastic sheet, the root of the elastic sheet is connected to the wall of the middle bundle core as a whole, and the end of the elastic sheet is tilted outward to be higher than the surface of the middle bundle core. After the elastic sheet is assembled, it is stuck in the groove corresponding to the inner side of the outer jacket to increase the torque during rotation and make the rotation smoother; the outer jacket, the middle bundle core and the lipstick tube are all made of PET, a non-toxic material of food packaging grade, and part of the surface is properly roughened to form a colorless and transparent or translucent structure.

[0007] When the middle bundle core and the outer sleeve are rotated relative to each other, the spiral groove of the outer sleeve pushes the column, and the column is subjected to the reverse thrust of the guide groove of the middle bundle core. The combined force of the two forces causes the column to move along the guide groove. Since the column is connected to the lipstick tube as a whole, the movement of the column along the guide groove drives the lipstick tube to move axially.

[0008] The middle bundle core near the rear end handheld section cooperates with the outer sleeve through an annular groove and an annular convex rib. The middle bundle core and the outer sleeve can rotate with each other and will not come off with the help of the annular groove and the annular convex rib; the cooperation between the annular groove and the annular convex rib is achieved by appropriate extrusion.

[0009] All parts of this device are made of transparent colorless PET material, and the color of the original lipstick can be directly observed, which is convenient for production, management, purchase or selection, and makes the product more gorgeous. Since the three components are made of PET material, the contents can be completely recycled after use without sorting, and the colorless and non-dyed characteristics fully meet the requirements of environmental protection standards. The PET material is polyethylene terephthalate, which is a non-toxic and odorless material with good hygienic safety, and has low gas and water vapor permeability, as well as excellent gas, water, oil and odor resistance, high and low temperature resistance, high transparency, UV blocking, and good gloss. Another point is that PET is harder than PS and other materials used in traditional technology, and the corresponding mechanical strength is also relatively high. Using PET to make the middle beam core can give full play to the advantage of fully recyclable materials, making this device different from the lipstick tube of traditional technology in structure.

[0010] The device also avoids the risk of inherent contamination caused by the use of metal springs in the prior art.

[0011] In a preferred embodiment, the spiral grooves on the inner wall of the outer sleeve are evenly distributed double-start threads, the guide grooves of the middle bundle core are two symmetrical straight grooves, and the raised pillars on the outer surface of the lipstick tube are two corresponding symmetrical positions.

[0012] In a preferred embodiment, a transverse side groove extends from each end of the guide groove, and the direction of extension of the side groove is opposite to the rotation direction of the spiral groove connected thereto; there is an arc-shaped bulge at the mouth of the side groove, and the width from the bulge to the other side of the mouth of the side groove is slightly smaller than the diameter of the pillar.

[0013] When the column passes through the side slot, due to extrusion, the related structures of the side slot are elastically deformed, and at the same time, the surface layer of the column and the surface layers on both sides of the side slot are elastically deformed. The comprehensive effect of deformation is limited to the column being able to squeeze through the side slot. After the column squeezes through the side slot, all related structures and surface layers are elastically restored, and due to the driving force and inertia during squeezing, the column continues to move forward and may hit the bottom or side wall of the side slot. Due to the elastic recovery and impact, vibration is caused and a "click" sound is emitted, which can remind the operator to understand the action status. The arc structure of the raised point of the side slot is conducive to expanding the extrusion deformation and reducing wear, and the stroke is very short.

[0014] Preferably, the spiral inclination angle of the spiral groove is 25° to 35°.

[0015] Preferably, the raised platform column and the lipstick tube are a one-piece structure made by injection molding, and the outer shell, the middle bundle core and the lipstick tube are all made of food packaging grade non-toxic material PET and part of the surface is roughened to form a colorless and transparent or translucent structure.

[0016] In a preferred embodiment, a small section of the outer circumference of the rear end of the middle bundle core is a hand-held section, and a straight or diamond-shaped pattern is arranged on the outer circumference of the section.

[0017] In a preferred embodiment, a plurality of reinforcing ribs are arranged along the axial direction on the inner surface of the lipstick tube.

[0018] In a preferred embodiment, the guide groove has a section of horizontal side groove extending from the middle to the front end and a plurality of other side grooves arranged in parallel at both ends, and the direction in which the plurality of side grooves extend is the same as the side grooves at the front end; at the same time, the middle bundle core has three annular convex ribs near the rear end hand-held section, and a certain distance is left between the three annular convex ribs; the outer sleeve has two annular grooves, and a certain width is left between the two annular grooves, and the three annular convex ribs and the two annular grooves have a certain axial gap after being matched, and the middle bundle core and the outer sleeve can use this gap to have a certain relative sliding distance along the axial direction.

[0019] Preferably, the elastic sheet is one or more hollow structures. When there is one elastic sheet, it surrounds the outer wall of the middle bundle core in a circle. When there are more than one elastic sheet, they are evenly distributed on the outer wall of the middle bundle core. The hollow structure includes a plurality of spacers. The root of the middle spacer is connected to the wall of the middle bundle core. The hardness and thickness of the root of the middle spacer are greater than those of other spacers. The end of the middle spacer is provided with a protrusion outwardly, and the protrusion is tightly against the inner wall of the outer sleeve. The thickness of the protrusion becomes thinner as it goes outward, and its shape is similar to the back of a horn comb. A protruding outer edge is provided at the bottom of the hand-held section, and the protruding outer edge is arranged so that the annular groove\annular rib on the outer periphery of the hand-held section is exactly in a position where the annular rib\annular groove on the outer sleeve rotates relative to each other. The middle spacer on the elastic sheet has three main functions: first, it plays a role in fixing the middle bundle core and the outer jacket; second, because the diameter of the middle spacer on the elastic sheet is larger than the diameter of other parts of the middle bundle core, when the middle bundle core is stuck in the outer jacket, when the hand-held section is rotated by hand, there will not be too much contact and friction between other parts of the wall of the middle bundle core and the outer jacket, causing difficulty in rotation, so that the user will feel that the rotation force is appropriate when rotating, and it is easy to use; third, the middle spacer on the elastic sheet is similar to the back of a horn comb, which itself will reduce the friction between the wall of the middle bundle core and the inner wall of the outer jacket. The protruding outer edge has a limiting effect, that is, the middle spacer on the elastic sheet on the middle bundle core is stuck on the inner wall of the outer jacket, and at the same time, the limiting effect of the protruding outer edge on the hand-held section can make the middle bundle core firmly fixed in the outer jacket and relatively rotatable.

[0020] Newly produced lipstick tubes are always filled with the most lipstick paste, and the length of the lipstick paste is also at its longest state. If the protruding length of the lipstick tube is positioned only by the side groove at the front end, the newly loaded lipstick paste will obviously protrude too much from the end of the middle bundle core. If the platform pillar and the lipstick tube are positioned by the random position in the middle of the spiral groove, it will cause an unstable state and affect the use. Setting multiple parallel side grooves can provide different positioning options for the lipstick tube, and the user can operate as needed to make the lipstick tube protrude the end of the middle bundle core to an appropriate length.

[0021] According to a preferred solution, a cover is arranged outside the outer jacket, the front end bottom of the cover is a closed structure, and the cover is composed of a front cover and a rear cover.

[0022] The beneficial effects of the present invention are:

[0023] 1. The lipstick tube of the present invention has a compact and concise structure and is completely composed of only three parts. All parts can be manufactured in batches by injection molding, which is low in cost. The injection molded parts do not require secondary processing, and the assembly is very convenient and fast. In particular, the spiral groove is directly provided on the inner surface of the outer jacket, which avoids the disadvantages of conventional assembly using discrete components.

[0024] 2. All parts are transparent and colorless, and the color of the original lipstick can be directly observed, which is not only convenient for production, management, purchase and selection, but also makes the product more brilliant;

[0025] 3. The surface of some parts is properly roughened to form a colorless and transparent or translucent structure, which can be achieved by properly treating the relevant surface of the mold, and is easy to manufacture;

[0026] 4. The materials of the three components are consistent, and the contents can be recycled after use without sorting, which meets environmental protection requirements;

[0027] 5. All materials are non-toxic, avoiding the risk of metal spring contamination in existing technologies;

[0028] 6. The guide groove and the spiral groove as the driving source are symmetrically arranged to balance the torque during rotation and ensure stable rotation;

[0029] 7. There is an elastic arched elastic sheet at the front end of the annular groove and annular convex rib of the middle beam core. The root of the elastic sheet is connected to the wall of the middle beam core as a whole. The end of the elastic sheet is tilted outward and is appropriately higher than the surface of the middle beam core. After assembly, the elastic sheet is stuck in the groove corresponding to the inner side of the outer jacket to prevent the fork from separating from the outer jacket;

[0030] 8. Both ends of the guide groove are extended with transverse side grooves, which can lock the lipstick tube at the front end to prevent the lipstick tube from loosening or even shrinking when applying lipstick, affecting the application; at the rear end, it can ensure that the lipstick tube will not slide forward automatically when there is no torque acting on the outer sleeve;

[0031] 9. The guide groove is provided with several other side grooves in parallel with the side grooves at both ends from the middle to the front end. Since there are multiple side grooves for different positioning options of the lipstick tube, the user can operate as needed to make the lipstick tube protrude from the end of the middle bundle core to an appropriate length;

[0032] 10. There is an arc-shaped bulge at the mouth of the side groove, and the width from the bulge to the other side of the mouth of the side groove is slightly smaller than the diameter of the pillar. In this way, the pillar can only be inserted into the side groove by squeezing, thereby achieving reliable positioning; if there is a bulge, a sound will be produced during the squeezing process to indicate the status. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0034] Figure 2 is an exploded schematic diagram of an embodiment of the present invention;

[0035] Figure 3 is a schematic diagram of a cross section of a lipstick tube;

[0036] Figure 4 It is a three-dimensional schematic diagram of a lipstick tube;

[0037] Figure 5 is a schematic cross-sectional view of the middle beam core;

[0038] Figure 6 It is a three-dimensional schematic diagram of the middle beam core;

[0039] Figure 7 is a schematic diagram of a cross section of a jacket;

[0040] Figure 8 It is a three-dimensional schematic diagram of the coat;

[0041] Fig. 9 It is a schematic diagram of the force on the convex column;

[0042] Fig.10 is a schematic diagram of the middle beam core structure of the second embodiment;

[0043] Fig.11 is a schematic diagram of the outer shell structure of the second embodiment;

[0044] Fig.12 is an assembly diagram of the second embodiment;

[0045] Fig.13 It is a schematic diagram of the structure of another embodiment.

[0046] In the figure: the middle bundle core 1; the guide groove 11; the hand-held section 12; the annular convex rib 13; the elastic sheet 14; the side groove 15; the ridge point 16; the narrow slit 17; the outer cover 2; the spiral groove 21; the annular groove 22; the lipstick tube 3; the pillar 31; the reinforcing rib 32; the cover 4; the front cover 41; the rear cover 42. DETAILED DESCRIPTION

[0047] The following is a detailed description of an embodiment of the present invention in conjunction with the accompanying drawings: This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0048] Embodiment 1:

[0049] See also Figure 1 , Figure 2 A recyclable environmentally friendly lipstick tube comprises a forked middle bundle core 1, a cylindrical outer sleeve 2 is rotatably matched on the outside of the middle bundle core 1, a lipstick tube 3 which can slide axially is matched inside the middle bundle core 1, a spiral groove 21 is formed on the inner wall surface of the outer sleeve 2, and a guide groove 11 is formed along the axial direction of the middle bundle core 1.

[0050] The outer surface of the lipstick tube 3 is provided with a raised column 31, and the column 31 and the lipstick tube 3 are a connected structure made by injection molding, see Figure 3 , Figure 4 .

[0051] The column 31 passes through the guide groove 11 of the middle beam core 1 and slides with the spiral groove 21 on the inner wall of the outer sleeve 2; a small section of the outer peripheral surface of the rear end of the middle beam core 1 is a hand-held section 12, and two annular convex ribs 13 are arranged on the outer peripheral surface of the middle beam core 1 near the rear end hand-held section 12, and the inner peripheral surface of the outer sleeve 2 and the annular convex rib 13 of the middle beam core 1 are adapted with an annular groove 22 that can rotate with each other. The middle beam core 1 and the outer sleeve 2 cooperate with the annular convex rib 13 through the annular groove 22, and there is only one degree of freedom, that is, the two can only rotate with each other and will not move axially. There is an elastic arched elastic sheet 14 at the front end of the annular convex rib 13 of the middle beam core 1, the root of the elastic sheet 14 is connected to the wall of the middle beam core 1 as a whole, and the end of the elastic sheet 14 is slightly higher than the surface of the middle beam core 1. After assembly, the elastic sheet 14 is stuck in the groove corresponding to the inner side of the outer sleeve 2 to prevent the middle beam core 1 from separating from the outer sleeve 2. In order to facilitate assembly or disassembly when necessary, the outer side surface of the end of the elastic sheet 14 is designed to be a forward sloped surface structure or a double-sided inclined structure, that is, a herringbone structure. Figure 5 , Figure 6 .

[0052] The direction of rotation of the spiral groove 21 is right-handed, and the right-handed rotation is used to adapt to the habit of most users to operate and rotate with their right hands. Of course, a small number of left-handed structures can also be used, but it needs to be indicated in the instructions. Figure 7 , Figure 8 .

[0053] The spiral grooves 21 on the inner wall of the outer sleeve 2 are evenly distributed double-start threads, the guide grooves 11 of the middle bundle core 1 are two symmetrical grooves, and the raised pillars 31 on the outer surface of the lipstick tube 3 are two corresponding symmetrical positions.

[0054] A transverse side groove 15 extends from each end of the guide groove 11. The extending direction of the side groove 15 is opposite to the rotation direction of the spiral groove 21. A small opening is left between the side groove 15 and the end of the middle bundle core 1 at the front end to facilitate the assembly of the lipstick tube 3. The mouth of the side groove 15 has an arc-shaped bulge 16. The width from the bulge 16 to the other side of the mouth of the side groove 15 is slightly smaller than the diameter of the pillar 31. A technical narrow slit 17 is set between the front end of the guide groove 11 and the front end surface of the middle bundle core 1. The narrow slit 17 is used to facilitate the assembly of the convex pillar 31 of the lipstick tube 3 and the middle bundle core 1.

[0055] The spiral inclination angle of the spiral groove 21 is 28°. The angle size needs to take into account the moving speed and the moving resistance. If the angle is too large, the thread rotation resistance will increase, causing stagnation or even self-locking of the system.

[0056] A straight or diamond pattern is arranged on the outer peripheral surface of the hand-held section 12 at the rear end of the middle bundle core 1. In consideration of saving materials and occupying less space, the length of the hand-held section 12 is always designed to be shorter, but this will affect the hand-held force, so the pattern is arranged to facilitate the hand-held middle bundle core 1 to cause the middle bundle core 1 and the outer sleeve 2 to rotate relative to each other, and then use the combined force of the spiral groove 21 and the guide groove 11 to push the lipstick tube 3 to move along the axial direction.

[0057] Fig. 9 The figure shows the resultant force on the column. In the figure, the inclination angle of the spiral groove 21 is 30°, that is, the angle between the guide groove 11 and the unfolding line of the spiral groove 21 is 60°. f1 is the thrust of the spiral groove 21 of the outer sleeve 2 on the column 31, and f2 is the reverse thrust of the guide groove 11 of the middle beam core 1 on the column 31. Since the boss 31 and the spiral groove 21 are in smooth surface contact, and similarly, the boss 31 and the guide groove 11 are also in smooth surface contact, it can be determined that the direction of the force between the boss 31 and the spiral groove 21 and between the boss 31 and the guide groove 11 must be pointing to the normal of their respective surfaces, that is, the direction of f1 is perpendicular to the wall of the spiral groove 21, and the direction of f2 is perpendicular to the wall of the guide groove 11. The resultant force of f1 and f2 is f3, and the directions of each force are as shown in Fig. 9 As shown, the resultant force f3 is directed forward, and f3 pushes the pillar and the lipstick tube forward.

[0058] Twelve reinforcing ribs 32 are evenly distributed along the axial direction on the inner surface of the lipstick tube 3 . The reinforcing ribs 32 are provided to enhance the strength of the lipstick tube 3 and also have the function of preventing the lipstick paste from slipping out of the lipstick tube 3 .

[0059] The parts of the device, including the middle bundle core 1, the outer cover 2 and the lipstick tube 3, are all made of food packaging grade non-toxic PET, and part of the surface is properly roughened to form a colorless and transparent or translucent structure. It is suitable for the color display of makeup lipstick, easy to identify, non-toxic, hygienic and safe, can be recycled as a whole, and meets the requirements of environmental protection standards. The color display also helps to increase the appearance of the product.

[0060] Embodiment 2:

[0061] The guide groove 11 has a transverse side groove 15 extending from the middle to the front end, and several other side grooves are arranged in parallel with the two ends, and the direction of extension of the several side grooves is the same as that of the side groove 15 at the front end; at the same time, the middle bundle core 1 has three annular ribs 13 near the rear hand-held section 12, and a certain distance is left between the three annular ribs 13. Fig.10 .

[0062] The outer sleeve 2 has two annular grooves 22, and a certain width is left between the two annular grooves 22. Fig.11 .

[0063] The three annular ribs 13 and the two annular grooves 22 have a certain axial gap a after being matched. The middle beam core and the outer sleeve can have a certain relative sliding distance in the axial direction by using this gap. When the user holds the hand-held section of the middle beam core with one hand and the outer sleeve with the other hand, and rotates the two relatively, if the three annular ribs 13 are pressed against the rear edges of the two annular grooves 22 at this time, the column 31 will first insert into the first side groove, and then slightly reverse, the column 31 will withdraw from the first side groove, continue to rotate forward and apply appropriate pulling force to the outer sleeve, the column 31 will skip the first side groove and continue to move forward and insert into the second side groove, and follow this rule until it is inserted into the side groove at the end. If the column 31 is selected to be inserted into the second side groove at the beginning, a rotation torque is applied to the outer sleeve 2, and a pulling force is applied at the same time when the column approaches the first side groove. When the column 31 moves and crosses the first groove due to the pulling force, the pulling force is stopped, that is, only rotating without pulling, the column 31 can continue to move forward and insert into the second side groove. With the choice of multiple side groove positioning, the user can operate as needed to make the lipstick tube 3 protrude the end of the middle bundle core 1 to an appropriate length. Fig.12 .

[0064] The remaining structures are the same as those in Example 1.

[0065] Embodiment 3:

[0066] A cover 4 is provided on the outside of the outer jacket 2, and the cover 4 is composed of a front cover 41 and a rear cover 42. The rest of the structure is the same as that of the embodiment 1. Fig.13 .

[0067] Embodiment 4:

[0068] The elastic sheet 14 is a hollow structure of one or more. When there is one elastic sheet 14, it surrounds the outer wall of the middle bundle core 1. When there are more than one elastic sheet 14, they are evenly distributed on the outer wall of the middle bundle core 1. The hollow structure includes a plurality of spacers. The root of the middle spacer is connected to the wall of the middle bundle core 1. The hardness and thickness of the root of the middle spacer are greater than those of other spacers. The end of the middle spacer is provided with a protrusion outwardly, which is tightly against the inner wall of the outer jacket 1. The thickness of the protrusion is thinner as it moves outward, and the shape is similar to the back of a horn comb. The bottom of the handheld section 12 is provided with a protruding outer edge, which is arranged at a position where the annular groove\annular rib on the outer periphery of the handheld section 12 is rotated with the annular rib\annular groove on the outer jacket 2.

[0069] The middle partition on the elastic sheet has three main functions: first, it serves to fix the middle bundle core and the outer jacket; second, because the diameter of the middle partition on the elastic sheet is larger than the diameter of other parts of the middle bundle core, when the middle bundle core is stuck in the outer jacket, when the hand-held section is rotated by hand, no contact and friction will occur between other parts of the wall of the middle bundle core and the outer jacket, and the user will feel that the rotational force is very small during rotation, making it easy to use; third, the middle partition on the elastic sheet is shaped like the back of a horn comb, which itself will reduce the friction between the wall of the middle bundle core and the inner wall of the outer jacket.

[0070] The protruding outer edge has a limiting function, that is, the middle partition on the elastic sheet on the middle bundle core is stuck on the inner wall of the outer jacket. At the same time, the limiting function of the protruding outer edge on the handheld section can make the middle bundle core firmly fixed in the outer jacket and relatively rotatable.

[0071] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A recyclable environmentally friendly lipstick tube, characterized in that: It comprises a forked center core, the outer surface of which is rotatably matched with a tubular outer sleeve, the inner surface of which is matched with a lipstick tube that can slide axially, the inner wall surface of the outer sleeve is provided with a spiral groove, the center core is provided with a guide groove along the axial direction, and the outer surface of the lipstick tube is provided with a raised platform column, which passes through the guide groove of the center core and slides with the spiral groove on the inner wall surface of the outer sleeve; a small section of the outer circumference of the rear end of the center core is a hand-held section, and at least one annular groove\annular convex rib is provided on the outer circumference of the center core near the rear end hand-held section, and an annular convex rib\annular groove that can rotate mutually is adapted to the inner circumference of the outer sleeve and the annular groove\annular convex rib of the center core; an elastic arched elastic sheet is provided at the front end of the annular groove\annular convex rib of the center core, the root of the elastic sheet is connected to the wall of the center core as a whole, the end of the elastic sheet is tilted outward to be higher than the surface of the center core, and the elastic sheet is stuck in the groove correspondingly provided on the inner side of the outer sleeve after assembly to prevent the center core from being separated from the outer sleeve; The spiral grooves on the inner wall of the outer sleeve are evenly distributed double-start threads, the guide grooves of the middle bundle core are two symmetrical straight grooves, and the raised pillars on the outer surface of the lipstick tube are two corresponding symmetrical positions; A transverse side groove is extended at each end of the guide groove, and the extending direction of the side groove is opposite to the rotation direction of the spiral groove connected thereto; an arc-shaped bulge is provided at the mouth of the side groove, and the width from the bulge to the other side of the mouth of the side groove is slightly smaller than the diameter of the pillar; The spiral groove has a spiral inclination angle of 25° to 30°; The raised pillar and the lipstick tube are a conjoined structure made by injection molding, and the outer shell, the middle bundle core and the lipstick tube are all made of PET, a food packaging grade non-toxic material, and part of the surface is roughened to form a transparent structure; The outer circumference of the rear end of the middle bundle core has a small section as a hand-held section, and the outer circumference of the section is provided with a straight or diamond pattern; The inner surface of the lipstick tube is provided with a plurality of reinforcing ribs along the axial direction; The guide groove has a section of horizontal side groove extending from the middle to the front end and a plurality of other side grooves arranged in parallel at both ends, and the direction of extension of the plurality of side grooves is the same as that of the side grooves at the front end; at the same time, the middle bundle core has three annular convex ribs close to the rear end hand-held section, and a certain distance is left between the three annular convex ribs; the outer sleeve has two annular grooves, and a certain width is left between the two annular grooves. The three annular convex ribs and the two annular grooves have a certain axial gap after being matched, and the middle bundle core and the outer sleeve can use this gap to have a certain relative sliding distance along the axial direction.

2. The recyclable environmentally friendly lipstick tube according to claim 1 is characterized in that: A cover is arranged on the outside of the outer coat, and the cover is composed of a front cover and a rear cover.

3. The recyclable environmentally friendly lipstick tube according to claim 1 is characterized in that: The elastic sheet is one or more hollow structures. When there is one elastic sheet, it surrounds the outer wall of the middle bundle core in a circle. When there are more than one elastic sheet, they are evenly distributed on the outer wall of the middle bundle core. The hollow structure includes a plurality of spacers. The root of the middle spacer is connected to the wall of the middle bundle core. The hardness and thickness of the root of the middle spacer are greater than those of other spacers. The end of the middle spacer is provided with a protrusion outwardly, and the protrusion is tightly against the inner wall of the outer sleeve. The thickness of the protrusion becomes thinner as it goes outward, and its shape is similar to the back of a horn comb. A protruding outer edge is provided at the bottom of the hand-held section, and the protruding outer edge is arranged so that the annular groove\annular rib on the outer periphery of the hand-held section is exactly in a position to rotate with the annular rib\annular groove on the outer sleeve.

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