CN214562634U - Manufacturing equipment for valve membrane structure of foam pump - Google Patents

Abstract

The utility model discloses a foam pump valve membrane structure's manufacture equipment. It includes mould and lower mould, the bottom surface of going up the mould is equipped with annular mould groove, the bottom surface in last annular mould groove is annular evenly distributed and has a plurality of discharge gate, it has a plurality of air discharge duct one to be annular evenly distributed on the bottom surface in annular mould groove, the top surface of lower mould be equipped with last annular mould groove assorted lower annular mould groove, the bottom surface in lower annular mould groove is annular evenly distributed and has a plurality of air discharge duct two, the inboard opening part in lower annular mould groove is annular evenly distributed and has a plurality of air discharge duct three, the outside opening part in lower annular mould groove is annular evenly distributed and has a plurality of air discharge duct four, the opening width of air discharge duct one, the opening width of air discharge duct two, the opening width of air discharge duct three and the opening width of air discharge duct four all are less than the width of discharge gate. The utility model has the advantages that: the molding quality of the valve membrane is improved; the safety in the injection molding process is improved.

Description

Manufacturing equipment for valve membrane structure of foam pump

Technical Field

The utility model belongs to the technical field of the foam pump technique of being correlated with and specifically relates to indicate a foam pump valve membrane structure's manufacture equipment.

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. 10, 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.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome the not enough of poor shaping quality among the prior art, provide a foam pump valve membrane structure's of shaping good quality manufacture equipment.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the manufacturing equipment of the valve membrane structure of the foam pump comprises an upper die and a lower die, wherein the upper die is arranged right above the lower die and is in sliding connection with the lower die, the bottom surface of the upper die is provided with an upper annular die groove, a plurality of discharge holes are uniformly distributed on the bottom surface of the upper annular die groove in an annular shape, a plurality of first exhaust grooves are uniformly distributed on the bottom surface of the upper annular die groove in an annular shape, a lower annular die groove matched with the upper annular die groove is arranged on the top surface of the lower die, a plurality of second exhaust grooves are uniformly distributed on the bottom surface of the lower annular mould groove in an annular shape, a plurality of third exhaust grooves are uniformly distributed on the opening of the inner side of the lower annular mould groove in an annular shape, the outer side opening of the lower annular mold groove is annularly and uniformly distributed with a plurality of exhaust grooves IV, and the depth of the exhaust grooves I, the depth of the exhaust grooves II, the depth of the exhaust grooves III and the depth of the exhaust grooves IV are all smaller than the overflow edge 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 molten material 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 molten material is uniformly filled in the die cavity from bottom to top can be well achieved, and the stress balance of the molten material at each position in the process of injecting the molten material is ensured. Wherein the gas exhausted from the first exhaust groove is exhausted to the gas outlet through the flow collecting channel.

Preferably, the top surface of the lower die is provided with a lower groove, the lower groove is arranged right below the upper annular die groove, the lower groove is connected with a top block in a sliding manner, the lower annular die groove consists of an inner groove part and an outer groove part, the inner groove part is positioned at the edge of the top surface of the top block, the outer groove part is positioned at the edge of an opening of the lower groove, the top surface of the top block is provided with a positioning column matched with the positioning groove, the top surface of the positioning column is provided with an air inlet matched with an air outlet, the top block is internally provided with an exhaust channel, 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 exhaust channel two is arranged at the outer side of the inner groove part and is communicated with the exhaust channel, the exhaust channel three-position is arranged at the inner side of the inner groove part and is communicated with the exhaust channel, one end of the exhaust channel four is communicated with the outer groove part, the other end of the fourth exhaust groove is arranged on the outer side wall of the lower die, the fourth exhaust groove is curved, the width of a port at one end of the fourth exhaust groove is smaller than that of the port at the other end of the fourth exhaust groove, and a safety baffle is installed at the port at the other end of the fourth exhaust groove. 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 exhaust groove IV is positioned at the gap between the upper die and the lower die and can be directly communicated with the external environment, and the possibility of the molten material directly overflowing from the exhaust groove IV is greatly reduced through the curved shape and the gradually widening design of the exhaust groove IV; the safety baffle that adds has also further improved the security when moulding plastics, prevents that the direct blowout of exhaust groove four 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, an annular mounting groove II is formed in the side wall of the sliding groove, a box body is fixed to the annular mounting groove II, 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 flanging is fixed to the sliding rod and 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 flanging. 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 utility model has the advantages that: the installation is convenient, and the time and the labor are saved; 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 material is ensured; the safety in the injection molding process is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an internal structural view of FIG. 1;

FIG. 3 is a bottom view of the upper annular mold groove of FIG. 1;

FIG. 4 is a top view of the lower annular die groove of FIG. 1;

FIG. 5 is an assembly view of the upper and lower annular mold slots;

FIG. 6 is a schematic structural view of the upper annular mold groove of FIG. 5;

FIG. 7 is a schematic view of the lower annular die groove of FIG. 5;

FIG. 8 is an enlarged view at A in FIG. 7;

FIG. 9 is an enlarged view at B in FIG. 7;

fig. 10 is a use state diagram of the present invention.

In the figure: 7. the die comprises an upper die, 8 parts of a lower die, 9 parts of an upper annular die groove, 10 parts of a discharge port, 11 parts of an exhaust groove I, 12 parts of a positioning groove, 13 parts of an air outlet, 14 parts of a lower annular die groove, 15 parts of an outer groove, 16 parts of a lower groove, 17 parts of an inner groove, 18 parts of an exhaust groove II, 19 parts of an exhaust groove III, 20 parts of a positioning column, 21 parts of a safety baffle plate, 22 parts of an exhaust groove IV, 23 parts of an air inlet, 24 parts of a flow dividing channel, 25 parts of an inlet port, 26 parts of a flow collecting channel, 27 parts of a top block, 28 parts of a sliding rod, 29 parts of a buffer spring, 30 parts of an air cylinder, 31 parts of a sliding groove, 32 parts of an elastic expansion ring, 33 parts of an annular mounting groove I, 34 parts of an oil supply tank, 35 parts of an oil channel, 37 parts of an annular mounting groove II, 38 parts of a box body, 39 parts of damping liquid, 40 parts of a flanging, 41 parts of a damping liquid through hole and 42 parts of an exhaust channel.

Detailed Description

The invention is further described with reference to the accompanying drawings and the detailed description.

In the embodiment shown in fig. 1-5, the manufacturing equipment of the foam pump valve membrane structure comprises an upper die 7 and a lower die 8, wherein the upper die 7 is arranged right above the lower die 8 and is in sliding connection with the lower die 8, an upper annular die groove 9 is arranged on the bottom surface of the upper die 7, a plurality of discharge holes 10 are uniformly distributed on the bottom surface of the upper annular die groove 9 in an annular manner, a plurality of exhaust grooves one 11 are uniformly distributed on the bottom surface of the upper annular die groove 9 in an annular manner, a lower annular die groove 14 matched with the upper annular die groove 9 is arranged on the top surface of the lower die 8, a plurality of exhaust grooves two 18 are uniformly distributed on the bottom surface of the lower annular die groove 14 in an annular manner, a plurality of exhaust grooves three 19 are uniformly distributed on the inner side opening of the lower annular die groove 14 in an annular manner, a plurality of exhaust grooves four 22 are uniformly distributed on the outer side opening of the lower annular die groove 14 in an annular manner, and the depth of the exhaust grooves one 11, The depth of the second exhaust groove 18, the depth of the third exhaust groove 19 and the depth of the fourth exhaust groove 22 are all smaller than the overflow edge value of the molten material.

As shown in fig. 6, the top surface of the upper die 7 is provided with a feed inlet 25, 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, the bottom surface of the upper die 7 is provided with a positioning groove 12, the positioning groove 12 is located on the central axis of the upper annular die groove 9, the bottom surface of the positioning groove 12 is provided with an air outlet 13, and the air outlet 13 is communicated with the first exhaust groove 11 through a flow collection channel 26.

As shown in fig. 7, 8 and 9, the lower mold 8 has a lower groove 16 on its top surface, 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 exhaust channel 42 is disposed inside the top block 27, 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 mold 8, an exhaust channel two 18 is disposed outside the inner groove portion 17 and is communicated with the exhaust channel 42, an exhaust channel three 19 is disposed inside the inner groove portion 17 and is communicated with the exhaust channel 42, one end of the exhaust groove four 22 is communicated with the outer groove part 15, the other end of the exhaust groove four 22 is arranged on the outer side wall of the lower die 8, the exhaust groove four 22 is curved, the width of a port at one end of the exhaust groove four 22 is smaller than that of a port at the other end of the exhaust groove four 22, and a safety baffle 21 is installed at the port at the other end of the exhaust groove four 22.

As shown in fig. 7 and 8, 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 the 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. 7 and 9, a sliding groove 31 is provided on the bottom surface of the lower groove 16, an air cylinder 30 and a sliding rod 28 matched 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 the bottom surface of the top block 27, a second annular mounting groove 37 is provided on the 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 manufacturing device of a foam pump valve membrane structure is characterized by comprising an upper die (7) and a lower die (8), wherein the upper die (7) is arranged right above the lower die (8) and is in sliding connection with the lower die (8), an upper annular die groove (9) is arranged on the bottom surface of the upper die (7), a plurality of discharge holes (10) are uniformly distributed on the bottom surface of the upper annular die groove (9) in an annular shape, a plurality of first exhaust grooves (11) are uniformly distributed on the bottom surface of the upper annular die groove (9) in an annular shape, a lower annular die groove (14) matched with the upper annular die groove (9) is arranged on the top surface of the lower die (8), a plurality of second exhaust grooves (18) are uniformly distributed on the bottom surface of the lower annular die groove (14) in an annular shape, and a plurality of third exhaust grooves (19) are uniformly distributed on the inner side opening of the lower annular die groove (14) in an annular shape, a plurality of exhaust grooves four (22) are annularly and uniformly distributed at the opening of the outer side of the lower annular mold groove (14), and the depth of the exhaust groove one (11), the depth of the exhaust groove two (18), the depth of the exhaust groove three (19) and the depth of the exhaust groove four (22) are all smaller than the overflow edge value of the molten material.

2. The manufacturing equipment of the valve membrane structure of the foam pump as claimed in claim 1, wherein 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 collecting channel (26).

3. The manufacturing equipment of the valve membrane structure of the foam pump as claimed in claim 2, wherein the lower die (8) is provided with a lower groove (16) on the top surface, 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 positioned at the edge of the top surface of the top block (27), the outer groove part (15) is positioned at the edge of the opening 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), and one end of the exhaust channel (42) is communicated with the air inlet (23), the other end of exhaust passage (42) is linked together with the lateral wall of lower mould (8), the outside of interior groove part (17) is arranged in to exhaust duct two (18) and is linked together with exhaust passage (42), exhaust duct three (19) are located the inboard of interior groove part (17) and are linked together with exhaust passage (42), wherein one end and outer groove part (15) of exhaust duct four (22) are linked together, the other end of exhaust duct four (22) is arranged in on the lateral wall of lower mould (8), the shape of exhaust duct four (22) is bent shape, the port width of exhaust duct four (22) wherein one end is less than the port width of exhaust duct four (22) other end, safety shield (21) are installed to the port department of exhaust duct four (22) other end.

4. The manufacturing equipment of the valve membrane structure of the foam pump as claimed in claim 3, wherein 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 the opening of the first annular mounting groove (33), the elastic expansion ring (32) is in sealing connection 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).

5. The manufacturing equipment of the valve membrane structure of the foam pump according to claim 3, 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), a second annular mounting groove (37) is formed in the 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 in sliding connection with the box body (38), a damping liquid (39) is arranged in the box body (38), a flanging (40) is fixed on the sliding rod (28), the flanging (40) is arranged in the box body (38) and is in sliding connection with the box body (38), and the flanging (40) is provided with a damping fluid through hole (41).

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