Pressure-resistant polymer rotary lock press vacuum cream bottle and preparation method thereof

Abstract

The present invention relates to a pressure-resistant polymer rotary lock pressing vacuum cream bottle and a preparation method thereof, which is designed to solve the technical problems of the inconvenience of assembling the outer head cap and the inner head cap of similar products as a whole, and the poor rebound effect of the blockage in the spray hole. The vacuum cream bottle comprises a head cap assembly, a pump core assembly, a large circle, a bottle body and a large piston, and the inner head cap of the head cap assembly is fitted with the outer head cap; the key points are that an annular lower inner ring is provided between the ring opening at the top of the large circle and the center hole, the outer diameter of the lower inner ring is provided with grooves distributed at equal intervals, and the upper ring opening of the raised limiting inner wall on one side of the upper inner ring between the grooves is respectively provided with inner buckle heads, and the other side of the limiting inner wall is symmetrically provided with a pressing inner wall; an annular upper inner ring is provided between the cap opening at the bottom of the inner head cap and the liquid inlet hole, the outer diameter of the upper inner ring is provided with convex edges distributed at equal intervals, and the middle of the outer diameter of the convex edge is provided with inner buckle grooves, the convex edge at the upper inner ring of the inner head cap is fitted with the groove at the lower inner ring of the large circle, and the inner buckle groove of the upper inner ring is buckled with the inner buckle head of the lower inner ring.

Description

Technical Field

[0001] The invention relates to a cream bottle, in particular to a pressure-resistant polymer rotary lock pressing vacuum cream bottle and a preparation method thereof. Background Art

[0002] A cream bottle refers to a bottle used for storing and taking out moisturizer or cream. The bottle body and bottle cap of such bottles are generally made of plastic, and some of the bottle bodies adopt a double-layer bottle body structure. Generally, after the bottle cap and the inner cover are rotated to open, the cream in the bottle body can be smeared with fingers for use. Among them, some cream bottles are squeezed out from a nozzle on one side by pressing, such as the application number 202121758225.5 disclosed in the Chinese patent literature, the authorization announcement date is 2021.12.17, and the utility model name is "A Press-type Cream Box". However, the head cap rotation unlocking and unlocking structure design of the above-mentioned products and similar products is poor, and the cream dispensing effect is poor, that is, there is a lack of rebound structure design in the spray hole for dispensing cream. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a pressure-resistant polymer rotary lock press vacuum cream bottle and its preparation method to the art, so as to solve the technical problems of the existing similar products, such as the inconvenience of assembling the outer cap and the inner cap as a whole, the poor rebound effect, sealing performance and cream discharge stability of the nozzle hole, and the need for improvement in material preparation and production. The purpose is achieved through the following technical solutions.

[0004] A pressure-resistant polymer rotary lock press vacuum cream bottle, the bottle body of the vacuum cream bottle is provided with a large piston, the bottle mouth of the bottle body is provided with a large circle, the center hole of the large circle is provided with a pump core assembly, the outer head cap of the head cap assembly is inserted into the outer diameter of the bottle body, and the liquid inlet hole at the inner head cap of the head cap assembly is fitted with the valve stem of the pump core assembly, the liquid inlet hole of the inner head cap is arranged at the center sleeve of the central protrusion on the top of the inner head cap, the liquid inlet hole of the inner head cap is communicated with the paste outlet hole on one side, the nozzle at the paste outlet hole extends out of the outer spray hole on one side of the outer head cap, the paste outlet hole of the inner head cap is communicated with the liquid inlet hole to form an L-shaped inner spray hole, and the inner head cap and the outer head cap of the head cap assembly are fitted together. The key points of its structural design are that an annular lower inner ring is provided between the ring opening at the top of the large ring and the center hole, the outer diameter of the lower inner ring is provided with grooves distributed at equal intervals, the ring opening above the raised limiting inner wall on one side of the upper inner ring between the grooves is provided with inner buckles, and the limiting inner wall of the lower inner ring is symmetrically provided with a pressing inner wall on the other side; an annular upper inner ring is provided between the cap opening at the bottom of the inner head cap and the liquid inlet hole, the outer diameter of the upper inner ring is provided with convex edges distributed at equal intervals, and the middle of the outer diameter of the convex edge is provided with inner buckle grooves, the convex edge at the upper inner ring of the inner head cap fits with the groove at the lower inner ring of the large ring, and the inner buckle groove of the upper inner ring fits with the inner buckle head of the lower inner ring. Thus, the inner head cap is driven to rotate while rotating the outer head cap, and the raised outer diameter between the upper inner ring of the inner head cap fits with the limiting inner wall and the pressing inner wall at the inner wall of the lower inner ring of the large ring, and the interference rotation is switched at the same time, and the open state is converted to the locked state.

[0005] A plugging groove is provided in the opening of one end of the inner spray hole of the inner head cap, the liquid outlet of the inner head cap is located in the inner head groove above the plugging groove, the end head of the corrugated section at one end of the plugging abuts against the plugging groove of the inner head cap, the ejector head at the other end of the plugging is inserted into the nozzle, and the nozzle is buckled and fixed in the inner spray hole in front of the plugging groove; a movable leaf plug is provided between the plugging ejector head and the corrugated section, the plugging movable leaf plug abuts against the notch of the plugging groove for sealing, an opening notch is provided at the opening of the plugging end of the nozzle, and the inner diameter of the nozzle at the notch is conical. Thus, the paste in the channel of the inner spray hole above the plugging groove presses the channel between the nozzle and the plugging to open, and the paste is sprayed out through the gap between the inner diameter of the nozzle and the outer diameter of the plugging.

[0006] An upper spring sheet is arranged on one side of the upper inner circle at the bottom of the inner head cap, and the bottom of the upper spring sheet is in a cross shape. An evenly spaced lower spring sheet is arranged in the lower inner circle at the top of the large circle, and the bottom of the lower spring sheet is in a cross shape. When the convex edge at the upper inner circle of the inner head cap fits with the groove at the lower inner circle of the large circle, the upper spring sheet of the inner head cap is located in the empty position between the lower spring sheets in the large circle, and the upper spring sheet of the inner head cap is higher than the lower spring sheet in the large circle. Thus, the inner head cap is driven to rotate while the outer head cap is rotated, and the upper spring sheet of the inner head cap and the lower spring sheet of the large circle are interfered and skipped, generating a damping force when the head cap assembly rotates.

[0007] The top ring opening of the large ring is raised and turned outward to be lower than the height of the lower inner ring, and the annular ring surface between the top ring opening of the large ring and the lower inner ring is provided with raised reinforcing ribs, and the outer diameter below the top ring opening of the large ring is sealed and fixed to the inner diameter of the bottle mouth of the bottle body. The above is a specific structural embodiment of the large ring, which facilitates the buckling and sealing between the large ring and the bottle body.

[0008] The inner spray hole between the liquid inlet and the paste outlet in the center sleeve of the inner head cap is convex downward and larger than the diameter of the center sleeve, and is rectangular. The corresponding inner head cap has a rectangular groove on the top, and the rectangular protrusion on the inner side of the upper inner ring has an arc groove. The upper spring sheet is arranged at the arc groove of the rectangular protrusion on the inner side of the upper inner ring. The above structure is a specific structural embodiment of the communication between the center sleeve and the inner spray hole.

[0009] The top corner of the outer cap is provided with a rotation-stopping rib, and the top corner of the inner cap is provided with an open rotation-stopping groove on at least one side, and the rotation-stopping groove of the inner cap is inserted into the rotation-stopping rib of the outer cap. The above structure facilitates further fixing of the outer cap and the inner cap after fitting.

[0010] The inner diameter below the anti-rotation rib of the outer cap is provided with a step ring that is larger than the inner diameter above, and the inner rib groove on one side of the step ring is provided with at least one raised secondary rib head, and an open side fixing groove is provided on one side of the cap opening of the outer diameter of the inner cap. The anti-rotation groove of the inner cap is inserted into the anti-rotation rib of the outer cap, and the side fixing groove of the inner cap is inserted into the secondary rib head of the outer cap. The above structure further enhances the fit and fixation between the outer cap and the inner cap, and the side fixing groove of the inner cap is used for gas discharge when the outer cap and the inner cap are fitted together.

[0011] The outer diameter of the inner cap is protruded with a convex rib, the convex rib of the inner cap abuts against the inner wall of the outer cap, a lower circular groove is provided at the top of the center sleeve of the inner cap, and an upper circular groove is provided at the inner top of the outer cap corresponding to the lower circular groove. The above structure facilitates gas discharge and pressure adsorption when the outer cap and the inner cap are fitted together.

[0012] The outer diameter of the valve stem of the pump core assembly is provided with a corrugated plastic spring sleeve, one end of the plastic spring sleeve is buckled and fixed to the bottom of the ring surface of the top hole of the valve stem, and the other end of the plastic spring sleeve is buckled and fixed to the raised ring groove at the fixing point of the inner plug and the large ring. The inner plug is buckled and fixed and extends into the pump port of the pump body. The valve needle in the pump body is buckled and fixed to the valve stem and a small piston is provided at the outer diameter of the buckling point. The bottom water inlet hole of the pump body is buckled and fixed with an elastic sleeve. The bottom of the pump body corresponds to the central groove of the large piston in the bottle body. The bottle body expands outward and becomes larger in a cone shape under the cap mouth of the outer cap. The above is a structural embodiment of the pump core assembly, which is convenient for the full plastic recycling of the vacuum cream bottle.

[0013] The inner cap is a pressure-resistant polymer inner cap, and the pressure-resistant polymer material includes the following components: 100 parts of degradable thermoplastic resin, 20 parts of polymer emulsion, 12-18 parts of phenolic resin, 4-5 parts of polybutylene succinate, 5-8 parts of maleic acid resin, 3-5 parts of melamine formaldehyde resin, 8-10 parts of rosin-modified alkyd resin, 7-10 parts of graphene oxide powder, 7-10 parts of magnesium carbonate powder, 4-5 parts of silicon dioxide, 4-5 parts of talc, and 3-4 parts of coupling agent KH550; the degradable thermoplastic resin, polymer emulsion, phenolic resin, polybutylene succinate are respectively added according to weight. Diol ester, maleic acid resin, melamine formaldehyde resin, rosin-modified alkyd resin, graphene oxide powder, magnesium carbonate powder, silicon dioxide, talcum powder and coupling agent KH550 are mixed in a mixer and mixed evenly; then the evenly mixed materials are mechanically extruded by a twin-screw extruder, the screw length-diameter ratio of the twin-screw extruder is 15:1-20:1, the temperature of the first zone of the twin-screw extruder is 150-160°C, the temperature of the second zone is 165-175°C, the temperature of the third zone is 180-190°C, and the temperature of the fourth zone is 205-215°C; after extrusion, granulation is performed to prepare a pressure-resistant polymer material.

[0014] The invention has a simple and reasonable structural design, is easy to assemble, produce, use and carry, has a good cream dispensing effect, has a good sealing firmness, is particularly convenient for gear operation, and is feasible for material production and preparation; it is suitable for use as a rotary press cream bottle, and is a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the explosion structure of the present invention, in which part A is framed.

[0016] Figure 2 yes Figure 1 Enlarged view of part A.

[0017] Figure 3 yes Figure 1 Schematic diagram of the internal structure of the outer cap.

[0018] Figure 4 yes Figure 1 Schematic diagram of the top structure of the large circle.

[0019] Figure 5 yes Figure 1 Schematic diagram of the cross-sectional structure of the inner head cap.

[0020] Figure 6 yes Figure 1 Schematic diagram of the top structure of the large circle.

[0021] Figure 7 It is a three-dimensional structural schematic diagram of the present invention.

[0022] Figure 8 yes Figure 7 The cross-sectional structure diagram of the bottom locking state Figure 1 .

[0023] Fig. 9 yes Figure 7 Cross-sectional view of the locked state Figure 2 , Part B is framed in the figure.

[0024] Fig.10 yes Fig. 9 Enlarged view of part B.

[0025] Fig.11 yes Figure 7 The bottom open state cross-sectional structure diagram Figure 1 .

[0026] Fig.12 yes Fig.11 Schematic diagram of the open state cross-section structure Figure 2 In the figure, part C is framed and the arrow indicates the direction of rotation to open.

[0027] Fig.13 yes Fig.12 Enlarged view of part C.

[0028] Serial number and name of the attached drawings: 1. Outer head cap, 101. Outer spray hole, 102. Inner rib groove, 103. Anti-rotation rib, 2. Nozzle, 3. Blockage, 301. Corrugated section, 302. Ejector head, 4. Inner head cap, 401. Inner spray hole, 402. Center sleeve, 403. Upper inner ring, 404. Side fixing groove, 405. Inner buckle groove, 406. Upper spring piece, 407. Anti-rotation groove, 408. Blockage groove, 409. Lower circular groove, 5. Pump core assembly, 6. Large ring, 601. Lower inner ring, 602. Inner buckle head, 603. Lower spring piece, 604. Reinforcement rib, 7. Large piston, 8. Bottle body. DETAILED DESCRIPTION

[0029] Now, the structure of the present invention is further described in conjunction with the accompanying drawings. Figure 1-Figure 13As shown, a large piston 7 is provided inside the bottle body 8 of the vacuum cream bottle, a large circle 6 is provided at the bottle mouth of the bottle body, a pump core assembly 5 is provided at the center hole of the large circle, and an outer head cap 1 of the head cap assembly is inserted into the outer diameter of the bottle body, while a liquid inlet hole at an inner head cap 4 of the head cap assembly is fitted with a valve stem of the pump core assembly, and the liquid inlet hole of the inner head cap is arranged at a center sleeve 402 protruding at the center of the top of the inner head cap, the liquid inlet hole of the inner head cap is communicated with a paste outlet hole on one side, and a nozzle 2 at the paste outlet hole extends out of an outer spray hole 101 on one side of the outer head cap, the paste outlet hole of the inner head cap is communicated with the liquid inlet hole to form an L-shaped inner spray hole 401, and the inner head cap and the outer head cap of the head cap assembly are fitted together as a whole. Its specific structure is as follows: an annular lower inner ring 601 is provided between the ring opening at the top of the large ring and the center hole, the outer diameter of the lower inner ring is provided with equidistantly distributed grooves, and inner buckle heads 602 are respectively provided on the ring opening above the raised limiting inner wall on one side of the upper inner ring between the grooves, and the limiting inner wall of the lower inner ring is symmetrically provided with a pressing inner wall on the other side; an annular upper inner ring 403 is provided between the cap opening at the bottom of the inner head cap and the liquid inlet hole, the outer diameter of the upper inner ring is provided with equidistantly distributed convex edges, and inner buckle grooves 405 are respectively provided in the middle of the outer diameter of the convex edges, the convex edges at the upper inner ring of the inner head cap are fitted with the grooves at the lower inner ring of the large ring, and the inner buckle grooves of the upper inner ring are buckled with the inner buckle heads of the lower inner ring. A blocking groove 408 is provided in the orifice at one end of the inner spray hole of the inner head cap, and the liquid outlet of the inner head cap is located in the inner head groove above the blocking groove. The end head of the corrugated section 301 at one end of the plug 3 abuts against the blocking groove of the inner head cap, and the ejector pin head 302 at the other end of the plug is inserted into the nozzle 2, and the nozzle is snap-fitted and fixed in the inner spray hole in front of the blocking groove; a movable vane plug is provided between the ejector pin head of the plug and the corrugated section, and the movable vane plug of the plug abuts against the notch of the blocking groove for sealing, and an opening is provided at the orifice at the plugging end of the nozzle with an opening notch, and the inner diameter of the nozzle at the notch is conical. The outer diameter of the valve stem of the pump core assembly is provided with a bellows-shaped plastic spring sleeve, one end of the plastic spring sleeve is buckled and fixed to the bottom of the ring surface of the outward-turned hole at the top of the valve stem, and the other end of the plastic spring sleeve is buckled and fixed to the raised ring groove at the fixing point of the inner plug and the large ring. The inner plug is buckled and fixed and extends into the pump port of the pump body, the valve needle in the pump body is buckled and fixed to the valve stem and a small piston is provided on the outer diameter of the buckling point, the bottom water inlet hole of the pump body is buckled and fixed with an elastic sleeve, the bottom of the pump body corresponds to the central groove of the large piston in the bottle body, and the bottle body expands outward below the cap opening of the outer cap and becomes conical.

[0030] An upper spring piece 406 is provided on one side of the upper inner circle at the bottom of the inner head cap, and the bottom of the upper spring piece is in a cross shape. An evenly spaced lower spring piece 603 is provided in the lower inner circle at the top of the large circle, and the bottom of the lower spring piece is in a cross shape. When the convex edge at the upper inner circle of the inner head cap fits with the groove at the lower inner circle of the large circle, the upper spring piece of the inner head cap is located in the empty position between the lower spring pieces in the large circle, and the upper spring piece of the inner head cap is higher than the lower spring piece in the large circle. The top ring opening of the large circle bulges upward and turns outward to be lower than the height of the lower inner circle. The annular ring surface between the top ring opening of the large circle and the lower inner circle is provided with a raised reinforcing rib 604, and the outer diameter below the top ring opening of the large circle is sealed and fixed to the inner diameter of the bottle mouth of the bottle body. A section of the inner spray hole between the liquid inlet and the paste outlet in the center sleeve of the inner cap is convex downward and larger than the diameter of the center sleeve in a rectangular shape. The corresponding inner cap top is provided with a rectangular groove, and the rectangular convexity on the inner side of the upper inner ring is provided with an arc-shaped groove, and the upper spring piece is provided at the arc-shaped groove of the rectangular convexity on the inner side of the upper inner ring. A stop rib 103 is provided at one end corner of the top inside the outer cap, and an open stop groove 407 is provided at least on one side of the top end corner of the inner cap, and the stop groove of the inner cap is inserted into the stop rib of the outer cap; at the same time, a step ring is provided at the inner diameter below the stop rib of the outer cap, which is larger than the inner diameter above, and an inner rib groove 102 on one side of the step ring is provided with at least a raised secondary rib head, and an open side fixing groove 404 is provided on one side of the cap mouth of the outer diameter of the inner cap, and the stop groove of the inner cap is inserted into the stop rib of the outer cap, while the side fixing groove of the inner cap is inserted into the secondary rib head of the outer cap. The outward protrusion of the cap mouth of the outer diameter of the inner head cap is provided with a convex circle rib, and the convex circle rib of the inner head cap is against the inner wall of the outer head cap. A lower circular groove 409 is provided at the top of the center sleeve of the inner head cap, and an upper circular groove is provided at the inner top of the outer head cap corresponding to the lower circular groove.

[0031] The specific assembly method of the vacuum cream bottle is as follows: the spray head is assembled, the pump core assembly is pressed in from the top of the large circle, the buckle position of the pump core assembly is matched with the buckle position of the large circle, and the sealing surface of the pump core assembly is matched with the sealing rib of the large circle in an interference seal; the outer cap is installed from the top of the inner cap, the three buckle positions of the outer cap are matched with the three buckle positions of the inner cap for positioning, the outer cap anti-rotation rib 103 is matched with the inner cap anti-rotation groove 407 to play a anti-rotation role, and the outer cap and the inner cap are sleeved into one; the plug is inserted into the cream outlet hole of the inner cap, the spring structure at the bottom of the plug is interfered with the bottom of the cream outlet hole of the inner cap, and the sealing surface of the plug is matched with the inner cap. The sealing surface of the head cap is in interference fit and seals; the nozzle is buckled into the paste outlet hole of the inner head cap, the nozzle buckle position is matched with the inner head cap buckle position, the nozzle sealing rib is in interference fit and seals with the inner head cap sealing surface, then the top surface is blocked to hold the nozzle paste outlet hole to seal it, forming a self-sealing head cap assembly; the head cap assembly is pressed in from the top of the large circle assembly, the inner head cap buckle position is buckled in and seals with the pump core assembly buckle position; this time, to open the pressable state, the head cap assembly needs to be rotated, the inner buckle groove 405 of the inner head cap is matched with the buckle position of the inner buckle head 602 of the large circle, and locked and fixed (cannot be pressed) to complete the assembly of the nozzle assembly. The bottle body is assembled, the large piston is installed from the top of the bottle body, the large piston sealing rib is in interference fit with the inner wall of the bottle body, and the bottle body assembly is completed by pressing it into place. Finished product assembly, the nozzle assembly is pressed in from the top of the bottle body assembly, the large circle buckle position is matched with the bottle body buckle position, the large circle sealing rib is in interference fit and seals with the sealing surface of the bottle body, and the finished product assembly is completed.

[0032] The functional principle of the vacuum cream bottle is as follows: 1. When the head cap assembly is pressed to discharge the cream, due to the internal pressure, the contents are squeezed against the sealing surface of the middle section of the plug, causing the spring structure of the rear section of the plug to be compressed and move backward. At this time, the plug is separated from the nozzle hole, and the contents flow out from the gap to complete the discharge of the cream; when the head cap assembly is not pressed down for use, the plug returns to its place through elastic force, so that it is always in a state where the nozzle and the plug are in a fit and sealed state, which can effectively protect the contents in the head cap assembly from contacting the air, and prevent the contents from oxidation and breeding of bacteria. 2. The vacuum cream bottle has a left-right rotating switch locking structure. After the head cap assembly is rotated clockwise for a certain angle, it is in the open state, and you can press the cap down to start the pump core to complete the cream dispensing effect; after rotating counterclockwise for a certain angle, it is in the closed state, and it cannot be pressed down to lock. During the rotation process, the upper spring piece 406 of the inner head cap and the lower spring piece 603 of the large circle will interfere with each other and make a crisp prompt sound. The back and forth switch will make a sound, and in the counterclockwise closed state, the three buckles of the inner head cap are buckled with the three buckles of the large circle to prevent loosening.

[0033] The above-mentioned inner head cap is a pressure-resistant polymer inner head cap, and the pressure-resistant polymer material includes the following components: Example 1, 100 parts of degradable thermoplastic resin, 20 parts of polymer emulsion, 12 parts of phenolic resin, 4 parts of polybutylene succinate, 5 parts of maleic acid resin, 3 parts of melamine formaldehyde resin, 8 parts of rosin-modified alkyd resin, 7 parts of graphene oxide powder, 7 parts of magnesium carbonate powder, 4 parts of silicon dioxide, 4 parts of talc, and 3 parts of KH550 coupling agent; the degradable thermoplastic resin, polymer emulsion, phenolic resin, polybutylene succinate, 5 parts of maleic acid resin, 3 parts of melamine formaldehyde resin, 8 parts of rosin-modified alkyd resin, 7 parts of graphene oxide powder, 7 parts of magnesium carbonate powder, 4 parts of silicon dioxide, 4 parts of talc, and 3 parts of KH550 coupling agent are respectively added according to weight parts. Butanediol ester, maleic acid resin, melamine formaldehyde resin, rosin-modified alkyd resin, graphene oxide powder, magnesium carbonate powder, silicon dioxide, talcum powder and coupling agent KH550 are mixed in a mixer and mixed evenly; then the evenly mixed materials are mechanically extruded by a twin-screw extruder, the screw length-diameter ratio of the twin-screw extruder is 15:1, the temperature of the first zone of the twin-screw extruder is 150°C, the temperature of the second zone is 165°C, the temperature of the third zone is 180°C, and the temperature of the fourth zone is 205°C; after extrusion, granulation is performed to prepare a pressure-resistant polymer material. Example 2: 100 parts of degradable thermoplastic resin, 20 parts of polymer emulsion, 18 parts of phenolic resin, 5 parts of polybutylene succinate, 8 parts of maleic acid resin, 5 parts of melamine formaldehyde resin, 10 parts of rosin-modified alkyd resin, 10 parts of graphene oxide powder, 10 parts of magnesium carbonate powder, 5 parts of silicon dioxide, 5 parts of talc, and 4 parts of KH550 coupling agent; degradable thermoplastic resin, polymer emulsion, phenolic resin, polybutylene succinate, maleic acid resin, melamine formaldehyde resin, 10 parts of rosin-modified alkyd resin, 10 parts of graphene oxide powder, 10 parts of magnesium carbonate powder, 5 parts of silicon dioxide, 5 parts of talc, and 4 parts of KH550 coupling agent are respectively added according to weight. Amine formaldehyde resin, rosin-modified alkyd resin, graphene oxide powder, magnesium carbonate powder, silicon dioxide, talcum powder and coupling agent KH550 are mixed in a mixer and mixed evenly; then the evenly mixed materials are mechanically extruded by a twin-screw extruder, the screw length-diameter ratio of the twin-screw extruder is 20:1, the temperature of the first zone of the twin-screw extruder is 160° C., the temperature of the second zone is 175° C., the temperature of the third zone is 190° C., and the temperature of the fourth zone is 215° C. After extrusion, granulation is performed to prepare a pressure-resistant polymer material.

[0034] In summary, the vacuum cream bottle is different from the conventional cosmetic cream bottle in that it is used by pressing to discharge the cream, and it is equipped with a rotating lock structure and a self-sealing nozzle, which is a novel way of use. The specific advantages of the vacuum cream bottle are as follows: 1. Rotate the nozzle assembly, and the large circle shift rib cooperates with the inner head cap shift rib to make a crisp prompt sound during the rotation process. 2. The large circle buckle groove is designed with shifts and buckles, so that after rotating the nozzle assembly clockwise to a specific angle, the nozzle assembly can be pressed to discharge the cream; after rotating the nozzle assembly counterclockwise to a specific angle, the nozzle assembly is buckled and cannot be pressed down, which has a locking effect. 3. A rebound structure is used to block and seal the nozzle hole, so that the cream can be discharged normally when the nozzle is used, and it can effectively block the air when the nozzle is not used to prevent the cream from oxidizing and breeding bacteria.

Claims

1. A pressure-resistant polymer rotary lock press vacuum cream bottle, wherein a large piston (7) is provided inside the bottle body (8) of the vacuum cream bottle, a large ring (6) is provided at the bottle mouth of the bottle body, a pump core assembly (5) is provided at the center hole of the large ring, an outer head cap (1) of the head cap assembly is inserted into the outer diameter of the bottle body, and a liquid inlet hole at an inner head cap (4) of the head cap assembly is sleeved with a valve stem of the pump core assembly, the liquid inlet hole of the inner head cap is arranged at a central sleeve (402) protruding at the center of the top of the inner head cap, the liquid inlet hole of the inner head cap is communicated with a liquid outlet hole on one side, a nozzle (2) at the liquid outlet hole extends out of an outer spray hole (101) on one side of the outer head cap, the liquid outlet hole of the inner head cap is communicated with the liquid inlet hole to form an L-shaped inner spray hole (401), and the inner head cap and the outer head cap of the head cap assembly are sleeved together; characterized in that An annular lower inner ring (601) is provided between the ring opening at the top of the large ring (6) and the center hole, the outer diameter of the lower inner ring is provided with grooves distributed at equal intervals, and inner buckle heads (602) are provided on the ring opening above the raised limiting inner wall on one side of the upper inner ring between the grooves, and the limiting inner wall of the lower inner ring is symmetrically provided with a pressing inner wall on the other side; an annular upper inner ring (403) is provided between the cap opening at the bottom of the inner head cap (4) and the liquid inlet hole, the outer diameter of the upper inner ring is provided with convex edges distributed at equal intervals, and inner buckle grooves (405) are provided in the middle of the outer diameter of the convex edges, the convex edges at the upper inner ring of the inner head cap fit into the grooves at the lower inner ring of the large ring, and the inner buckle grooves of the upper inner ring buckle with the inner buckle heads of the lower inner ring The inner nozzle hole (401) of the inner head cap (4) is provided with a plugging groove (408) at one end of the hole, the liquid outlet of the inner head cap is located in the inner head groove above the plugging groove, the end head of the corrugated section (301) at one end of the plug (3) is against the plugging groove of the inner head cap, the ejector head (302) at the other end of the plug is inserted into the nozzle (2), and the nozzle is fixed in the inner nozzle hole in front of the plugging groove; a movable leaf plug is provided between the plugging ejector head and the corrugated section, the plugging movable leaf plug is against the notch of the plugging groove for sealing, the hole of the plugging end of the nozzle is provided with an opening, and the inner diameter of the nozzle at the notch is conical; the upper inner ring (4) at the bottom of the inner head cap (4) 03) An upper spring sheet (406) is provided on one side of the inner part, and the bottom of the upper spring sheet is in the shape of a cross. The lower inner ring (601) at the top of the large ring (6) is provided with lower spring sheets (603) distributed at equal intervals, and the bottom of the lower spring sheet is in the shape of a cross. When the convex edge at the upper inner ring of the inner head cap is fitted with the groove at the lower inner ring of the large ring, the upper spring sheet of the inner head cap is located in the empty position between the inner and lower spring sheets of the large ring, and the upper spring sheet of the inner head cap is higher than the inner and lower spring sheets of the large ring; the top ring opening of the large ring (6) is raised and turned outward to be lower than the height of the lower inner ring (601), and the annular ring surface between the top ring opening of the large ring and the lower inner ring is provided with a raised reinforcing rib (604), and the outer ring below the top ring opening of the large ring The inner diameter of the bottle mouth of the bottle body (8) is sealed and fixed; a section of the inner spray hole (401) between the liquid inlet hole and the liquid outlet hole in the center sleeve (402) of the inner head cap (4) is downwardly protruding and larger than the diameter of the center sleeve, and is rectangular; a corresponding rectangular groove is provided on the top of the inner head cap, and an arc-shaped groove is provided on the rectangular protrusion on the inner side of the upper inner ring (403); the upper spring piece (406) is arranged on the arc-shaped groove of the rectangular protrusion on the inner side of the upper inner ring; a stop rib (103) is provided on one end corner of the top inside the outer head cap (1), and an open stop groove (407) is provided on at least one side of the top end corner of the inner head cap (4), and the stop groove of the inner head cap is inserted into the stop rib of the outer head cap.

2. The pressure-resistant polymer rotary lock press vacuum cream bottle according to claim 1, characterized in that The inner diameter below the anti-rotation rib (103) of the outer cap (1) is provided with a step ring whose inner diameter is larger than the inner diameter above, and the inner rib groove (102) on one side of the step ring is provided with at least one raised secondary rib head, and the cap opening side of the outer diameter of the inner cap (4) is provided with an open side fixing groove (404), and the anti-rotation groove (407) of the inner cap is inserted into the anti-rotation rib of the outer cap, and at the same time, the side fixing groove of the inner cap is inserted into the secondary rib head of the outer cap.

3. The pressure-resistant polymer rotary lock press vacuum cream bottle according to claim 1, characterized in that The outer diameter of the inner cap (4) is protruded outwardly with a convex rib, and the convex rib of the inner cap abuts against the inner wall of the outer cap (1). A lower circular groove (409) is provided at the top of the center sleeve (402) of the inner cap, and an upper circular groove is provided at the inner top of the outer cap corresponding to the lower circular groove.

4. The pressure-resistant polymer rotary lock press vacuum cream bottle according to claim 1, characterized in that The outer diameter of the valve stem of the pump core assembly (5) is provided with a bellows-shaped plastic spring sleeve, one end of the plastic spring sleeve is buckled and fixed to the bottom of the ring surface of the valve stem top hole, and the other end of the plastic spring sleeve is buckled and fixed to the raised ring groove at the fixing point of the inner plug and the large ring (6). The inner plug is buckled and fixed and extends into the pump port of the pump body. The valve needle in the pump body is buckled and fixed to the valve stem and a small piston is provided on the outer diameter of the buckling point. The bottom water inlet hole of the pump body is buckled and fixed with an elastic sleeve. The bottom of the pump body corresponds to the central groove of the large piston (7) in the bottle body (8). The bottle body expands outwards below the cap opening of the outer cap (1) and becomes larger and tapered.

5. The method for preparing the pressure-resistant polymer rotary lock press vacuum cream bottle according to claim 1, characterized in that The inner head cap (4) is a pressure-resistant polymer inner head cap, and the pressure-resistant polymer material comprises the following components: 100 parts of degradable thermoplastic resin, 20 parts of polymer emulsion, 12-18 parts of phenolic resin, 4-5 parts of polybutylene succinate, 5-8 parts of maleic acid resin, 3-5 parts of melamine formaldehyde resin, 8-10 parts of rosin-modified alkyd resin, 7-10 parts of graphene oxide powder, 7-10 parts of magnesium carbonate powder, 4-5 parts of silicon dioxide, 4-5 parts of talc, and 3-4 parts of KH550 coupling agent; the degradable thermoplastic resin, polymer emulsion, phenolic resin, polybutylene succinate are respectively added according to weight. Diol ester, maleic acid resin, melamine formaldehyde resin, rosin-modified alkyd resin, graphene oxide powder, magnesium carbonate powder, silicon dioxide, talcum powder and coupling agent KH550 are mixed in a mixer and mixed evenly; then the evenly mixed materials are mechanically extruded by a twin-screw extruder, the screw length-diameter ratio of the twin-screw extruder is 15:1-20:1, the temperature of the first zone of the twin-screw extruder is 150-160°C, the temperature of the second zone is 165-175°C, the temperature of the third zone is 180-190°C, and the temperature of the fourth zone is 205-215°C; after extrusion, granulation is performed to prepare a pressure-resistant polymer material.

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