CN113146968B - Foam pump valve membrane structure and manufacturing method thereof - Google Patents
Foam pump valve membrane structure and manufacturing method thereof Download PDFInfo
- Publication number
- CN113146968B CN113146968B CN202110171158.5A CN202110171158A CN113146968B CN 113146968 B CN113146968 B CN 113146968B CN 202110171158 A CN202110171158 A CN 202110171158A CN 113146968 B CN113146968 B CN 113146968B
- Authority
- CN
- China
- Prior art keywords
- groove
- die
- valve
- annular
- exhaust
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 75
- 239000006260 foam Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000012768 molten material Substances 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000000465 moulding Methods 0.000 claims abstract description 13
- 238000013016 damping Methods 0.000 claims description 17
- 239000003921 oil Substances 0.000 claims description 16
- 239000000155 melt Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 9
- 239000010687 lubricating oil Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 14
- 238000001746 injection moulding Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 12
- 239000002537 cosmetic Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 239000010902 straw Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000002453 shampoo Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
Abstract
The invention discloses a foam pump valve membrane structure and a manufacturing method thereof, and aims to provide a foam pump valve membrane structure with good molding quality and good sealing effect and a manufacturing method thereof. It includes the valve diaphragm body, be equipped with outer elastic diaphragm and interior elastic diaphragm on the lateral wall of valve diaphragm body and the inside wall respectively, outer elastic diaphragm be the annular fix the valve diaphragm body the outside and with valve diaphragm body fixed connection, interior elastic diaphragm be the annular fix the valve diaphragm body the inboard and with valve diaphragm body fixed connection. The beneficial effects of the invention are: the installation is convenient, and the time and the labor are saved; the sealing effect is good; the molding quality of the valve membrane is improved; the friction force between the valve film and the die is reduced, and the valve film is protected; the stress balance of the molten material at each position in the process of injecting the material is ensured; the safety in the injection molding process is improved.
Description
Technical Field
The invention relates to the technical field of foam pumps, in particular to a valve membrane structure of a foam pump and a manufacturing method thereof.
Background
In the field of cosmetics, foam cosmetics are widely applied in daily life, and people can contain different fluids in cosmetic bottles according to needs, and the fluids are extruded and sprayed to form foam, and the foam cosmetics are often used for moisturizing or beautifying. In addition, the foam washing and caring product is widely applied to life, such as bubble bath lotion, bubble shampoo and the like.
As shown in fig. 11, the foam pump can push the liquid in the bottle along the straw into the pump, and the liquid is prevented from falling back along the straw by the one-way valve sealing the top of the straw. When the pressure is pressed next time, the piston is driven to move downwards, liquid in the pump is sprayed out from a valve port above the pump through the piston, and the liquid and air are mixed and then extruded out after being pressurized by the foam generator. The valve membrane is used as one of the components in the foam pump, is arranged on a large piston in the foam pump, is used for air sealing between the large piston and a small piston on one hand, and is used for blocking an air hole on the large piston on the other hand, and the processing quality of the valve membrane directly influences the performance of the foam pump. In the production process of the valve membrane, due to the structural design defect of the mold and the unreasonable operation of workers in the demolding process, the molding quality of the valve membrane is easily deteriorated, and the sealing performance of the valve membrane is further influenced.
Disclosure of Invention
The invention provides a foam pump valve membrane structure with good molding quality and good sealing effect and a manufacturing method thereof, aiming at overcoming the defects of poor molding quality and poor sealing effect in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a foam pump valve membrane structure, includes the valve membrane body, be equipped with outer elastic diaphragm and interior elastic diaphragm on the lateral wall of valve membrane body and the inside wall respectively, outer elastic diaphragm be the annular fix the valve membrane body the outside and with valve membrane body fixed connection, interior elastic diaphragm be the annular fix the valve membrane body the inboard and with valve membrane body fixed connection.
Through the design of the inner elastic diaphragm, the gap between the large piston and the small piston can be well sealed; through the design of the outer elastic diaphragm, the air hole in the large piston is blocked, the air hole is sealed in a one-way mode, the air in the large piston is prevented from leaking, and the sealing effect is good.
Preferably, the valve diaphragm body is in a circular tube shape, the inner elastic diaphragm and the outer elastic diaphragm are both arranged at one end of the valve diaphragm body, an annular chamfer is arranged at the junction of the end face of the other end of the valve diaphragm body and the outer side wall of the valve diaphragm body, and an annular chamfer groove is arranged at the junction of the end face of the other end of the valve diaphragm body and the inner side wall of the valve diaphragm body. Through the design of annular chamfer and annular chamfer groove, improved the smoothness of valve membrane in the installation, the operation is got up simple and conveniently, labour saving and time saving.
Preferably, the outer elastic diaphragm inclines towards the direction of the annular chamfer from inside to outside, and a first round angle is arranged at the joint of the outer elastic diaphragm and the valve diaphragm body. The sealing effect between the large piston and the small piston is further improved.
Preferably, the valve diaphragm body is provided with an annular flange, the annular flange is annularly fixed on the inner side of the valve diaphragm body and is fixedly connected with the valve diaphragm body, the inner elastic diaphragm is annularly fixed on the inner side of the annular flange and is fixedly connected with the annular flange, the inner elastic diaphragm inclines from inside to outside towards the direction of the annular chamfer groove, and a second fillet is arranged at the joint of the inner elastic diaphragm and the valve diaphragm body. The sealing effect on the air hole is further improved.
The invention also provides a manufacturing method of the foam pump valve membrane structure, which comprises the following steps:
processing an upper die and a lower die which are matched with each other according to the shape and the size of a valve film, repeatedly cleaning a die groove of the upper die and a die groove of the lower die and drying;
controlling the upper die to act through the guide device, closing the upper die and the lower die, and then starting a heating system to respectively preheat a cavity formed by the runner and the two die grooves;
injecting a molten material into the cavity through the runner by using an injection device, controlling the molten material to be uniformly filled in the cavity from bottom to top, and discharging air in the cavity from the bottom of the cavity, the top of the cavity and the end parts of the inner and outer film sheet grooves of the cavity respectively;
continuously maintaining the pressure of the filled molten material, and compacting the molten material;
step five, after the pressure maintaining is finished, starting a cooling system, and performing cold solidification molding on the melt in the cavity, wherein the larger the thickness of the product is, the larger the pipe diameter is, the more the number is, and the longer the cooling time is;
after cooling, resetting the upper die and opening the die with the lower die;
and step seven, adding a proper amount of lubricating oil into a gap between the side wall of the lower die groove and the valve membrane, then controlling the top block at the bottom of the lower die groove to move upwards, and slowly ejecting the valve membrane out of the lower die groove by matching with a spring damping device.
In the process of injecting the molten material into the cavity, the air in the cavity and various gases generated by the molten material in the heating process can be well exhausted by respectively exhausting the bottom of the cavity, the top of the cavity and the ends of the inner film sheet groove and the outer film sheet groove of the cavity, so that the situations of insufficient injection or surface burn of the valve film caused by residual gas in the cavity are prevented, and the forming quality of the valve film is greatly improved. Lubricating oil is added to the side wall of the lower die groove and the valve film, so that friction force between the valve film and the die can be reduced, and the valve film is protected. Through the design of the spring damping device, the stress of the jacking block to the valve membrane in the ascending process can be effectively buffered, the surface of the valve membrane is prevented from leaving a jacking mark, the forming quality of the valve membrane is greatly improved, and the sealing effect of the valve membrane is ensured.
Preferably, the bottom surface of the upper die is provided with an upper annular die groove, a plurality of discharge ports are annularly and uniformly distributed on the bottom surface of the upper annular die groove, a plurality of first exhaust grooves are annularly and uniformly distributed on the bottom surface of the upper annular die groove, the top surface of the lower die is provided with a lower annular die groove matched with the upper annular die groove, a plurality of second exhaust grooves are annularly and uniformly distributed on the bottom surface of the lower annular die groove, a plurality of third exhaust grooves are annularly and uniformly distributed on the opening of the inner side of the lower annular die groove, a plurality of fourth exhaust grooves are annularly and uniformly distributed on the opening of the outer side of the lower annular die groove, and the depth of the first exhaust groove, the depth of the second exhaust groove, the depth of the third exhaust groove and the depth of the fourth exhaust groove are all smaller than the overflow limit value of the molten material. And when the die is closed, a cavity matched with the shape and the size of the valve membrane is formed between the upper annular die groove and the lower annular die groove. Wherein the melt passes through the discharge gate and solidifies the shaping in getting into the die cavity, is annular evenly distributed's design through the discharge gate, and the purpose that the melt that reaches that can be fine is full of in the die cavity from bottom to top and evenly has guaranteed the stress balance on annotating material in-process melt each position. In the process of material injection, the top, the bottom, the inner side and the outer side of the cavity are comprehensively exhausted through the first exhaust groove, the second exhaust groove, the third exhaust groove and the fourth exhaust groove, residual gas in the cavity can be effectively exhausted, the cavity can be smoothly filled with molten materials, the phenomenon of flowing marks or bubbles on the surface of a molded valve membrane is prevented, the molding quality of the valve membrane is greatly improved, and the sealing effect of the valve membrane is ensured. Wherein the depth of exhaust groove can be designed to 0.01 millimeter, can prevent that the melt from flowing into the exhaust groove, influencing the process of moulding plastics.
Preferably, the top surface of the upper die is provided with a feed inlet, the feed inlet is positioned on the central axis of the upper annular die groove, the feed inlet is communicated with the discharge outlet through a diversion channel, the bottom surface of the upper die is provided with a positioning groove, the positioning groove is positioned on the central axis of the upper annular die groove, the bottom surface of the positioning groove is provided with an air outlet, and the air outlet is communicated with the first exhaust groove through a flow collecting channel. The melt is injected into the upper die through the feed inlet and uniformly and synchronously flows to each discharge outlet through the diversion channel, so that the purpose that the melt is uniformly filled in the die cavity from bottom to top can be well achieved, and the stress balance of the melt at each position in the process of injecting the melt is ensured. Wherein the gas discharged from the first exhaust groove is discharged to the gas outlet through the collecting channel.
Preferably, the top surface of the lower die is provided with a lower groove, the lower groove is arranged right below an upper annular die groove, a top block is connected in the lower groove in a sliding mode, the lower annular die groove is composed of an inner groove part and an outer groove part, the inner groove part is located at the edge of the top surface of the top block, the outer groove part is located at the edge of an opening of the lower groove, a positioning column matched with the positioning groove is arranged on the top surface of the top block, an air inlet matched with an air outlet is formed in the top surface of the positioning column, an exhaust channel is arranged inside the top block, one end of the exhaust channel is communicated with the air inlet, the other end of the exhaust channel is communicated with the outer side wall of the lower die, the second exhaust channel is arranged outside the inner groove part and communicated with the exhaust channel, the third exhaust channel is arranged inside the inner groove part and communicated with the exhaust channel, one end of the fourth exhaust channel is communicated with the outer groove part, the other end of the fourth exhaust channel is arranged on the outer side wall of the lower die, the fourth exhaust channel is curved, the width of the port is smaller than the width of the other end of the fourth exhaust channel, and a safety baffle is arranged at the other end of the fourth exhaust channel. Through the combined design of inner groove part and outer groove part for the valve membrane after the shaping directly is located the top surface of kicking block, and the kicking block is direct ejecting with the valve membrane when conveniently drawing of patterns, has guaranteed simultaneously that the kicking block is exerted to the valve membrane bottom surface and is balanced and even ejecting power, prevents to leave the trace of roof pressure on the valve membrane surface, has improved the shaping quality of valve membrane greatly, has guaranteed the sealed effect of valve membrane. Through the design of the positioning columns and the positioning grooves, the guiding and positioning functions of the upper die and the lower die in the die closing process are achieved, and the processing precision of injection molding is guaranteed. The gas exhausted by the exhaust groove I can be exhausted to the external environment through the gas outlet, the gas inlet and the exhaust channel in sequence, and the gas exhausted by the exhaust groove II and the exhaust groove III can also be directly exhausted to the external environment through the exhaust channel. The fourth exhaust groove is positioned in the gap between the upper die and the lower die and can be directly communicated with the external environment, and the possibility of direct overflow of the molten material from the fourth exhaust groove is greatly reduced through the curved shape and the gradually widening design of the fourth exhaust groove; the safety baffle that adds has also further improved the security when moulding plastics, prevents that the direct blowout of exhaust duct from of melt from scalding staff's the condition.
Preferably, an annular mounting groove I is formed in the side wall of the lower groove, an elastic expansion ring is mounted at an opening of the annular mounting groove I, the elastic expansion ring is connected with the annular mounting groove I in a sealing mode, an oil supply tank is mounted inside the lower die, and the oil supply tank is connected with the bottom surface of the annular mounting groove I through an oil duct. When the demoulding is carried out, lubricating oil can be injected into the first annular mounting groove through the oil duct of the oil supply tank, the elastic expansion ring shrinks inwards under the action of oil pressure to form a gap with the first annular mounting groove, and the lubricating oil can flow onto the inner side wall of the lower groove through the gap, so that friction between the lower groove and the valve membrane is reduced, and the valve membrane is protected.
Preferably, a sliding groove is formed in the bottom surface of the lower groove, an air cylinder and a sliding rod matched with the sliding groove are arranged in the sliding groove, the air cylinder is fixed to the bottom surface of the sliding groove, a buffer spring is fixed between one end of the sliding rod and a telescopic shaft of the air cylinder, the other end of the sliding rod is fixed to the bottom surface of the ejector block, a second annular mounting groove is formed in the side wall of the sliding groove, a box body is fixed to the second annular mounting groove, the sliding rod penetrates through the box body and is in sliding connection with the box body, damping liquid is arranged in the box body, a turned-over edge is fixed to the sliding rod, the turned-over edge is arranged in the box body and is in sliding connection with the box body, and a damping liquid through hole is formed in the turned-over edge. Through buffer spring's design, play the cushioning effect between cylinder and the kicking block on the one hand, the kicking block can slowly go upward, slowly ejecting valve membrane, and the buffering kicking block is going upward the stress of in-process to the valve membrane effectively, prevents to leave the trace of roof pressure on the valve membrane surface, has improved the shaping quality of valve membrane greatly, has guaranteed the sealed effect of valve membrane. On the other hand, through the damping force formed by the friction between the hole wall of the damping liquid through hole and the damping liquid and the internal friction between the damping liquid molecules, the upward movement of the top block and the upper sliding rod of the top block can be further damped and buffered, meanwhile, part of elastic force generated when the spring rebounds can be offset, the stability of the demolding process is further improved, the molding quality of the valve membrane is improved, and the sealing effect of the valve membrane is ensured.
The invention has the beneficial effects that: the installation is convenient, and the time and the labor are saved; the sealing effect is good; the molding quality of the valve membrane is improved; reducing friction force between the valve film and the die, and playing a role in protecting the valve film; the stress balance of the molten material at each position in the process of injecting the molten material is ensured; the safety in the injection molding process is improved.
Drawings
FIG. 1 is a schematic illustration of a product of the present invention;
FIG. 2 is a schematic view of the mold construction;
FIG. 3 is an internal structural view of FIG. 2;
FIG. 4 is a bottom view of the upper annular mold slot of FIG. 2;
FIG. 5 is a top view of the lower annular die groove of FIG. 2;
FIG. 6 is an assembly view of the upper and lower annular mold slots;
FIG. 7 is a schematic view of the upper annular mold groove of FIG. 6;
FIG. 8 is a schematic view of the lower annular die slot of FIG. 6;
FIG. 9 is an enlarged view at A in FIG. 8;
FIG. 10 is an enlarged view at B in FIG. 8;
fig. 11 is a state diagram of the use of the present invention.
In the figure: 1. the valve comprises an outer elastic diaphragm, a valve diaphragm body, a 3-annular flange, a 4-inner elastic diaphragm, a 5-annular chamfer groove, a 6-annular chamfer, a 7-upper die, a 8-lower die, a 9-upper annular die groove, a 10-discharge hole, a 11-exhaust groove I, a 12-positioning groove, a 13-gas outlet, a 14-lower annular die groove, a 15-outer groove part, a 16-lower groove, a 17-inner groove part, a 18-exhaust groove II, a 19-exhaust groove III, a 20-positioning column, a 21-safety baffle, a 22-exhaust groove IV, a 23-gas inlet, a 24-flow distribution channel, a 25-feed inlet, a 26-flow collection channel, a 27-top block, a 28-slide rod, a 29-buffer spring, a 30-cylinder, a 31-slide groove, a 32-elastic expansion ring, a 33-annular mounting groove I, a 34-tank, a 35-oil channel, a 37-annular mounting groove II, a 38-box body, a 39-damping liquid, a 40-flange, a 41-damping liquid through hole, and a 42-exhaust channel.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
In the embodiment shown in fig. 1, a valve diaphragm structure of a foam pump includes a valve diaphragm body 2, an outer elastic diaphragm 1 and an inner elastic diaphragm 4 are respectively disposed on an outer side wall and an inner side wall of the valve diaphragm body 2, the outer elastic diaphragm 1 is fixed to the outer side of the valve diaphragm body 2 in an annular shape and is fixedly connected to the valve diaphragm body 2, and the inner elastic diaphragm 4 is fixed to the inner side of the valve diaphragm body 2 in an annular shape and is fixedly connected to the valve diaphragm body 2.
The valve diaphragm body 2 is in a circular tube shape, the inner elastic diaphragm 4 and the outer elastic diaphragm 1 are arranged at one end of the valve diaphragm body 2, an annular chamfer 6 is arranged at the junction of the end face of the other end of the valve diaphragm body 2 and the outer side wall of the valve diaphragm body 2, and an annular chamfer groove 5 is arranged at the junction of the end face of the other end of the valve diaphragm body 2 and the inner side wall of the valve diaphragm body 2.
The outer elastic diaphragm 1 inclines towards the direction of the annular chamfer 6 from inside to outside, and a first round corner is arranged at the joint of the outer elastic diaphragm 1 and the valve diaphragm body 2.
Be equipped with annular turn-ups 3 on valve membrane body 2, annular turn-ups 3 be the annular fix in valve membrane body 2 inboard and with valve membrane body 2 fixed connection, interior elastic diaphragm 4 be the annular fix in annular turn-ups 3 inboard and with annular turn-ups 3 fixed connection, interior elastic diaphragm 4 is from inside to outside towards the direction slope of annular chamfer groove 5, the junction of interior elastic diaphragm 4 and valve membrane body 2 is equipped with fillet two.
As shown in fig. 2 and 3, the present invention also provides a method for manufacturing a valve membrane structure of a foam pump, comprising the steps of:
processing an upper die 7 and a lower die 8 which are matched with each other according to the shape and the size of a valve film, and repeatedly cleaning and drying a die groove of the upper die 7 and a die groove of the lower die 8;
step two, controlling the action of the upper die 7 through a guide device, carrying out die assembly with the lower die 8, and then starting a heating system to respectively preheat cavities formed by the runner and the two die grooves;
injecting a molten material into the cavity through a flow channel by using an injection device, controlling the molten material to be uniformly filled in the cavity from bottom to top, and discharging air in the cavity from the bottom of the cavity, the top of the cavity and the end parts of the inner film sheet groove and the outer film sheet groove of the cavity respectively;
continuously maintaining the pressure of the filled molten material, and compacting the molten material;
step five, after the pressure maintaining is finished, starting a cooling system, and performing cold solidification molding on the melt in the cavity, wherein the larger the thickness of the product is, the larger the pipe diameter is, the more the number is, and the longer the cooling time is;
after cooling, resetting the upper die 7 and opening the die with the lower die 8;
and seventhly, adding a proper amount of lubricating oil into a gap between the side wall of the lower die groove and the valve film, controlling a top block at the bottom of the lower die groove to move upwards, and slowly ejecting the valve film out of the lower die groove by matching with a spring damping device.
As shown in fig. 4, 5 and 6, the bottom surface of the upper mold 7 is provided with an upper annular mold groove 9, the bottom surface of the upper annular mold groove 9 is annularly and uniformly distributed with a plurality of discharge ports 10, the bottom surface of the upper annular mold groove 9 is annularly and uniformly distributed with a plurality of first exhaust grooves 11, the top surface of the lower mold 8 is provided with a lower annular mold groove 14 matched with the upper annular mold groove 9, the bottom surface of the lower annular mold groove 14 is annularly and uniformly distributed with a plurality of second exhaust grooves 18, the inner side opening of the lower annular mold groove 14 is annularly and uniformly distributed with a plurality of third exhaust grooves 19, the outer side opening of the lower annular mold groove 14 is annularly and uniformly distributed with a plurality of fourth exhaust grooves 22, and the depth of the first exhaust grooves 11, the depth of the second exhaust grooves 18, the depth of the third exhaust grooves 19 and the depth of the fourth exhaust grooves 22 are all smaller than the overflow limit value of the molten material.
As shown in fig. 7, a feed inlet 25 is formed in the top surface of the upper die 7, the feed inlet 25 is located on the central axis of the upper annular die groove 9, the feed inlet 25 is communicated with the discharge outlet 10 through a diversion channel 24, a positioning groove 12 is formed in the bottom surface of the upper die 7, the positioning groove 12 is located on the central axis of the upper annular die groove 9, an air outlet 13 is formed in the bottom surface of the positioning groove 12, and the air outlet 13 is communicated with the first exhaust groove 11 through a flow collection channel 26.
As shown in fig. 8, 9 and 10, the lower mold 8 has a lower groove 16 on the top surface thereof, the lower groove 16 is disposed right below the upper annular mold groove 9, a top block 27 is slidably connected in the lower groove 16, the lower annular mold groove 14 is composed of an inner groove portion 17 and an outer groove portion 15, the inner groove portion 17 is disposed at the edge of the top surface of the top block 27, the outer groove portion 15 is disposed at the edge of the opening of the lower groove 16, a positioning column 20 matched with the positioning groove 12 is disposed on the top surface of the top block 27, an air inlet 23 matched with the air outlet 13 is disposed on the top surface of the positioning column 20, an air outlet passage 42 is disposed inside the top block 27, one end of the air outlet passage 42 is communicated with the air inlet 23, the other end of the air outlet passage 42 is communicated with the outer sidewall of the lower mold 8, an air outlet second 18 is disposed on the outer sidewall of the inner groove portion 17 and communicated with the air outlet passage 42, an air outlet third 19 is disposed on the inner sidewall of the inner groove portion 17 and communicated with the air outlet passage 42, one end of the four exhaust grooves 22 is communicated with the outer groove portion 15, the other end of the four exhaust grooves 22 is disposed on the outer sidewall of the lower mold 8, the other end of the four exhaust grooves 22 is curved, the four exhaust grooves 22 is smaller than the width of the four exhaust grooves 22, and the four exhaust port 21 of the four exhaust grooves 22 is mounted with the safety baffle plate.
As shown in fig. 8 and 9, a first annular mounting groove 33 is formed in the side wall of the lower groove 16, an elastic expansion ring 32 is mounted at an opening of the first annular mounting groove 33, the elastic expansion ring 32 is hermetically connected with the first annular mounting groove 33, an oil supply tank 34 is mounted inside the lower die 8, and the oil supply tank 34 is connected with the bottom surface of the first annular mounting groove 33 through an oil passage 35.
As shown in fig. 8 and 10, a sliding groove 31 is provided on a bottom surface of the lower groove 16, an air cylinder 30 and a sliding rod 28 matching with the sliding groove 31 are provided in the sliding groove 31, the air cylinder 30 is fixed on the bottom surface of the sliding groove 31, a buffer spring 29 is fixed between one end of the sliding rod 28 and a telescopic shaft of the air cylinder 30, the other end of the sliding rod 28 is fixed on a bottom surface of the top block 27, a second annular mounting groove 37 is provided on a side wall of the sliding groove 31, a box body 38 is fixed in the second annular mounting groove 37, the sliding rod 28 penetrates through the box body 38 and is slidably connected with the box body 38, damping fluid 39 is provided in the box body 38, a flange 40 is fixed on the sliding rod 28, the flange 40 is disposed in the box body 38 and is slidably connected with the box body 38, and a damping fluid through hole 41 is provided on the flange 40.
The injection molding principle is as follows:
after the upper mold 7 and the lower mold 8 are closed, a cavity matching the shape and size of the valve film is formed between the upper annular mold groove 9 and the lower annular mold groove 14 (formed by combining the inner groove portion 17 and the outer groove portion 15). The melt is injected into the upper mold 7 through the inlet 25, and flows uniformly and synchronously to each outlet 10 through the diversion channel 24, and then the melt is filled uniformly in the cavity from bottom to top through the outlets 10. (in the process of injecting the material, the top, the bottom, the inner side and the outer side of the cavity are respectively and comprehensively exhausted through the first exhaust groove 11, the second exhaust groove 18, the third exhaust groove 19 and the fourth exhaust groove 22, so that residual gas in the cavity can be effectively exhausted, and the situation that the cavity is filled with the molten material smoothly is ensured).
The solidified and formed valve membrane is directly located on the top surface of the top block 27. During demolding, the oil supply tank 34 injects lubricating oil into the first annular mounting groove 33 through the oil passage 35, the elastic expansion ring 32 is contracted inward under the action of oil pressure to form a gap with the first annular mounting groove 33, and the lubricating oil can flow to the inner side wall of the lower groove 16 through the gap to reduce friction between the lower groove 16 and the valve diaphragm. Then, the air cylinder 30 works, and under the buffering action of the buffer spring 29 and the damping liquid 39, the ejector block 27 is driven to slowly move upwards to eject the valve membrane.
Claims (5)
1. A valve membrane structure of a foam pump is characterized by comprising a valve membrane body (2), wherein an outer elastic membrane (1) and an inner elastic membrane (4) are respectively arranged on the outer side wall and the inner side wall of the valve membrane body (2), the outer elastic membrane (1) is annularly fixed on the outer side of the valve membrane body (2) and fixedly connected with the valve membrane body (2), and the inner elastic membrane (4) is annularly fixed on the inner side of the valve membrane body (2) and fixedly connected with the valve membrane body (2);
a manufacturing method of a foam pump valve membrane structure is characterized by comprising the following steps:
processing an upper die (7) and a lower die (8) which are matched with each other according to the shape and the size of a valve membrane, and repeatedly cleaning and drying a die groove of the upper die (7) and a die groove of the lower die (8);
step two, controlling the action of an upper die (7) through a guide device, carrying out die assembly with a lower die (8), and then starting a heating system to respectively preheat cavities formed by a flow channel and two die grooves;
injecting a molten material into the cavity through the runner by using an injection device, controlling the molten material to be uniformly filled in the cavity from bottom to top, and discharging air in the cavity from the bottom of the cavity, the top of the cavity and the end parts of the inner and outer film sheet grooves of the cavity respectively;
continuously maintaining the pressure of the filled molten material, and compacting the molten material;
step five, after the pressure maintaining is finished, starting a cooling system, and performing cold solidification molding on the melt in the cavity, wherein the larger the thickness of the product is, the larger the pipe diameter is, the more the number is, and the longer the cooling time is;
after cooling, resetting the upper die (7) and opening the die with the lower die (8);
step seven, adding a proper amount of lubricating oil into a gap between the side wall of the lower die groove and the product, then controlling a top block at the bottom of the lower die groove to move upwards, and slowly ejecting the product out of the lower die groove by matching with a spring damping device;
the bottom surface of the upper die (7) is provided with an upper annular die groove (9), a plurality of discharge holes (10) are annularly and uniformly distributed on the bottom surface of the upper annular die groove (9), a plurality of exhaust grooves I (11) are annularly and uniformly distributed on the bottom surface of the upper annular die groove (9), a plurality of exhaust grooves III (19) are annularly and uniformly distributed at the opening part on the inner side of the lower annular die groove (14) and matched with the upper annular die groove (9), a plurality of exhaust grooves IV (22) are annularly and uniformly distributed at the opening part on the outer side of the lower annular die groove (14), the depth of the exhaust grooves I (11), the depth of the exhaust grooves II (18), the depth of the exhaust grooves III (19) and the depth of the exhaust grooves IV (22) are all smaller than the melt limit value of the overflow, a feed inlet (25) is arranged on the top surface of the upper die (7), the feed inlet (25) is positioned on the upper annular die groove (9), the upper annular die groove (10) is communicated with the discharge holes (12) through a central axis line, and the upper die groove (12) and the upper die groove (9) is positioned on the upper die groove (12), the bottom surface of the positioning groove (12) is provided with an air outlet (13), the air outlet (13) is communicated with the first exhaust groove (11) through a flow collecting channel (26), the top surface of the lower die (8) is provided with a lower groove (16), the lower groove (16) is arranged right below the upper annular die groove (9), the lower groove (16) is connected with a top block (27) in a sliding manner, the lower annular die groove (14) is composed of an inner groove part (17) and an outer groove part (15), the inner groove part (17) is arranged at the edge of the top surface of the top block (27), the outer groove part (15) is arranged at the opening edge of the lower groove (16), the top surface of the top block (27) is provided with a positioning column (20) matched with the positioning groove (12), the top surface of the positioning column (20) is provided with an air inlet (23) matched with the air outlet (13), the top block (27) is internally provided with an exhaust channel (42), one end of the exhaust channel (42) is communicated with the air inlet (23), the other end of the exhaust channel (42) is communicated with the outer side wall of the lower die (8), the outer side wall of the exhaust channel (18) is arranged at the inner side wall of the third exhaust channel (17), wherein one end and outer groove part (15) of four (22) of exhaust duct are linked together, the other end of four (22) of exhaust duct is arranged in on the lateral wall of lower mould (8), the shape of four (22) of exhaust duct is bent shape, the port width of four (22) of exhaust duct wherein one end is less than the port width of four (22) other ends of exhaust duct, safety shield (21) are installed to the port department of four (22) other ends of exhaust duct, be equipped with annular mounting groove (33) on the lateral wall of low recess (16), the opening part of annular mounting groove (33) is installed elasticity ring (32) that rises, elasticity ring (32) and annular mounting groove (33) sealing connection, the internally mounted of lower mould (8) has oil supply tank (34), be connected through oil duct (35) between the bottom surface of oil supply tank (34) and annular mounting groove (33).
2. The valve diaphragm structure of the foam pump according to claim 1, wherein the valve diaphragm body (2) is in a shape of a circular tube, the inner elastic diaphragm (4) and the outer elastic diaphragm (1) are both arranged at one end of the valve diaphragm body (2), an annular chamfer (6) is arranged at the junction of the end surface of the other end of the valve diaphragm body (2) and the outer side wall of the valve diaphragm body (2), and an annular chamfer groove (5) is arranged at the junction of the end surface of the other end of the valve diaphragm body (2) and the inner side wall of the valve diaphragm body (2).
3. The valve diaphragm structure of the foam pump according to claim 2, wherein the outer elastic diaphragm (1) is inclined from inside to outside in the direction of the annular chamfer (6), and a first rounded corner is formed at the joint of the outer elastic diaphragm (1) and the valve diaphragm body (2).
4. The foam pump valve membrane structure according to claim 2, wherein an annular flange (3) is arranged on the valve membrane body (2), the annular flange (3) is annularly fixed on the inner side of the valve membrane body (2) and fixedly connected with the valve membrane body (2), the inner elastic membrane (4) is annularly fixed on the inner side of the annular flange (3) and fixedly connected with the annular flange (3), the inner elastic membrane (4) is inclined from inside to outside in the direction of the annular chamfer groove (5), and a second fillet is arranged at the joint of the inner elastic membrane (4) and the valve membrane body (2).
5. The valve diaphragm structure of the foam pump according to claim 1, wherein a sliding groove (31) is formed in the bottom surface of the lower groove (16), an air cylinder (30) and a sliding rod (28) matched with the sliding groove (31) are arranged in the sliding groove (31), the air cylinder (30) is fixed on the bottom surface of the sliding groove (31), a buffer spring (29) is fixed between one end of the sliding rod (28) and a telescopic shaft of the air cylinder (30), the other end of the sliding rod (28) is fixed on the bottom surface of the top block (27), an annular mounting groove II (37) is formed in the side wall of the sliding groove (31), a box body (38) is fixed in the annular mounting groove II (37), the sliding rod (28) penetrates through the box body (38) and is in sliding connection with the box body (38), damping fluid (39) is arranged in the box body (38), a flange (40) is fixed on the sliding rod (28), the flange (40) is arranged in the box body (38) and is in sliding connection with the box body (38), and a damping fluid through hole (41) is formed in the flange (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110171158.5A CN113146968B (en) | 2021-02-08 | 2021-02-08 | Foam pump valve membrane structure and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110171158.5A CN113146968B (en) | 2021-02-08 | 2021-02-08 | Foam pump valve membrane structure and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113146968A CN113146968A (en) | 2021-07-23 |
| CN113146968B true CN113146968B (en) | 2022-12-27 |
Family
ID=76882850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110171158.5A Active CN113146968B (en) | 2021-02-08 | 2021-02-08 | Foam pump valve membrane structure and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113146968B (en) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4247264A (en) * | 1979-04-13 | 1981-01-27 | Wilden Pump & Engineering Co. | Air driven diaphragm pump |
| US5217797A (en) * | 1992-02-19 | 1993-06-08 | W. L. Gore & Associates, Inc. | Chemically resistant diaphragm |
| CN200958600Y (en) * | 2006-08-31 | 2007-10-10 | 上海大隆机器有限公司 | Rubber curved diaphragm |
| CN101509484B (en) * | 2009-03-12 | 2011-08-31 | 宁波强生电机有限公司 | Diaphragm of diaphragm pump and molding technique thereof |
| CN103702768B (en) * | 2011-06-09 | 2017-08-04 | 爱柔包装技术集团股份公司 | Pumping installations for fluid container |
| CN102996533A (en) * | 2011-09-13 | 2013-03-27 | 黄石优利福自动化装备有限责任公司 | Energy accumulator membrane |
| CN105500610A (en) * | 2014-09-23 | 2016-04-20 | 天津联欣盈塑胶科技有限公司 | Television set base injection molding mold |
| CN107339499B (en) * | 2017-08-02 | 2023-05-16 | 江苏宝时达动力科技有限公司 | Diaphragm assembly of flow control valve of oil-gas separator |
| CN207240744U (en) * | 2017-09-26 | 2018-04-17 | 珠海市华迅塑料泵业有限公司 | A kind of foam pump check valve flexible glue multiaspect vented mould |
| CN110193920A (en) * | 2019-06-10 | 2019-09-03 | 东莞市竣詹机械科技有限公司 | A kind of plastic mould thimble pushing mechanism |
| CN110435099A (en) * | 2019-08-05 | 2019-11-12 | 义乌市拓一斯玩具有限公司 | A kind of easily demoulding craft mould and its release method |
| CN110667046B (en) * | 2019-11-15 | 2021-05-11 | 衡水汉丰橡塑科技有限公司 | Rubber diaphragm production mould |
-
2021
- 2021-02-08 CN CN202110171158.5A patent/CN113146968B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113146968A (en) | 2021-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208178377U (en) | The process unit of Iron Mould Coated Sand vertical-parting cast bearing lid casting | |
| CN112248389B (en) | Injection mold for producing high-strength accessories | |
| CN201855936U (en) | Mould for pump body of gas ring type vacuum pump | |
| CN113146968B (en) | Foam pump valve membrane structure and manufacturing method thereof | |
| CN214562634U (en) | Manufacturing equipment for valve membrane structure of foam pump | |
| CN208290364U (en) | A kind of injection mold convenient for turnover box demoulding | |
| CN212528538U (en) | BMC mould mouth of a river stub bar mould structure | |
| CN205871073U (en) | High accuracy car injection mold | |
| CN209599767U (en) | A kind of mold of built-in imitative hydraulic cylinder structure | |
| CN202137903U (en) | Glue injection mould with temperature measuring hole | |
| CN204749143U (en) | A the gating system for injection mold kazakhstan husband's mode structure | |
| CN209478817U (en) | A kind of curved injection part injection mold | |
| CN211221852U (en) | Injection mold for header board with buffering way | |
| CN206383434U (en) | A kind of injection mold for upper lid | |
| CN106142473A (en) | Mould for photocopier moulding | |
| CN213972349U (en) | High-efficient high-quality injection mold of plastics apron | |
| CN207522969U (en) | A kind of mold | |
| CN206306384U (en) | A kind of two-plate plastic mould of high-efficiency high-precision | |
| CN202213151U (en) | Glue injection die runner | |
| CN211708067U (en) | Vertical extruder | |
| CN218838465U (en) | Thick-wall polycarbonate plastic sealed container mould | |
| CN214926669U (en) | Machining die for precision valve | |
| CN211616461U (en) | Injection molding glue feeding structure of precision mold | |
| CN215619633U (en) | Long and narrow automobile LED headlamp mask mold with large sliding block inner core-pulling mechanism | |
| CN220052698U (en) | Injection mold for thin-wall plastic lunch box cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |