CN111889304B

CN111889304B - Liquid material extrusion device

Info

Publication number: CN111889304B
Application number: CN202010191321.XA
Authority: CN
Inventors: 何致融
Original assignee: All Ring Tech Co Ltd
Current assignee: All Ring Tech Co Ltd
Priority date: 2019-05-06
Filing date: 2020-03-18
Publication date: 2022-04-19
Anticipated expiration: 2040-03-18
Also published as: TWI770383B; CN111889304A; TW202041287A

Abstract

The invention provides a liquid material extrusion device, comprising: a valve seat provided with a piezoelectric actuator, a liquid chamber module provided with a die holder, the die holder is provided with a first container box mechanism, and the liquid chamber mechanism comprises: a chamber is arranged in the liquid chamber seat, and the bottom of the chamber is provided with a containing hole; a plunger containing chamber is arranged in the pivot seat; a valve nozzle seat, which is provided with a containing chamber which is butted and communicated with the containing hole and is provided with a valve nozzle below; the accommodating hole and the accommodating chamber jointly form a liquid chamber; a plunger is arranged in the plunger chamber, and the lower end of the plunger is positioned in the liquid chamber; an elastic piece is sleeved outside a rod part of the plunger; the plunger pushes the liquid material in the liquid chamber to extrude the liquid material from the valve nozzle; the liquid chamber mechanism is an assembly which can be independently disassembled and separated from the valve seat and the die holder, and when the liquid chamber module is disassembled, the whole liquid chamber mechanism is separated from the valve seat along with the liquid chamber mechanism.

Description

Liquid material extrusion device

Technical Field

The present invention relates to a liquid material extruding apparatus, and more particularly, to a liquid material extruding apparatus for containing a liquid material for extruding.

Background

A common liquid material extruding device usually holds a viscous liquid material in a work piece by one of spraying, spotting and coating, and such a liquid material extruding device is usually provided with a valve seat, in which a piezoelectric actuator is arranged to drive a lever to amplify a displacement amount, so as to indirectly push a plunger for liquid material extrusion, so that the plunger pushes the liquid material in a liquid chamber seat below the valve seat, and the liquid material in the liquid chamber is extruded through a valve nozzle.

Disclosure of Invention

In the prior art, the liquid material in the liquid chamber seat is usually different in viscosity according to different processing and coating requirements, so that the cleaning of the liquid chamber seat is important, and the convenience of replacement is a necessary consideration, but generally, the prior art often uses a screw-fastening method to fasten the components partially arranged on the valve seat, so that the replacement becomes difficult, and some designs do not consider the difficulty of processing combination tolerance, so that the components are easy to be soaked with glue liquid to cause difficulty in cleaning after being combined, and therefore, there is still a need for improvement in the mechanism design related to the liquid chamber seat.

Accordingly, it is an object of the present invention to provide a liquid material extruding apparatus which is easy to process, disassemble and assemble.

The liquid material extrusion device according to the object of the present invention comprises: a valve seat, in which a piezoelectric actuator is set, and a lever is pressed by the piezoelectric actuator to apply force; the liquid chamber module is provided with a die holder, and the die holder is provided with a first accommodating chamber; a liquid chamber mechanism is arranged in the first accommodating chamber, and the liquid chamber mechanism comprises: the liquid chamber seat is internally provided with a cavity, and the bottom of the cavity is provided with a section of accommodating hole with a smaller aperture than the cavity; a pivot seat arranged in the cavity of the liquid chamber seat, a plunger containing chamber is arranged in the pivot seat, a shaft hole communicated with the containing hole in the liquid chamber seat is arranged below the plunger containing chamber, and an opening is formed above the plunger containing chamber; a valve nozzle seat, which is provided with a containing chamber, an opening is arranged above the containing chamber and is butted and communicated with the containing hole of the liquid chamber seat, a valve nozzle with a thin hole is arranged below the containing chamber, the upper end of the valve nozzle is communicated with the containing chamber, and the lower end of the valve nozzle is communicated with the outside of the valve nozzle seat; the accommodating hole and the accommodating chamber are communicated and form a liquid chamber together; the plunger piston is arranged in the plunger piston accommodating chamber in the pivot seat and comprises a head part and a rod part, wherein the head part is positioned above the head part and has a larger rod diameter, the rod part is positioned below the head part and has a smaller rod diameter, and the rod part extends downwards through the shaft hole and the lower end of the rod part is positioned in the liquid chamber; an elastic piece is sleeved outside the rod part of the plunger in the plunger accommodating chamber and provides a restoring driving force for the plunger when being compressed; the plunger pushes the liquid material in the liquid chamber by the rod part so that the liquid material in the liquid chamber is extruded from the valve nozzle; the liquid chamber mechanism is an assembly which can be independently disassembled and separated from the valve seat and the die holder, and when the liquid chamber module is disassembled, the whole liquid chamber mechanism is separated from the valve seat along with the liquid chamber mechanism.

In the liquid material extruding device of the embodiment of the invention, the liquid chamber mechanism is a die assembly which can be independently disassembled and assembled, when the liquid chamber module is disassembled, the whole liquid chamber mechanism is separated from the valve seat and the heating mechanism, so that the liquid chamber mechanism can be easily disassembled and cleaned, can be heated by a heat source in the heating mechanism, and can be easily processed, disassembled and assembled integrally.

Drawings

Fig. 1 is a schematic perspective view of a liquid material extruding apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a liquid chamber module according to an embodiment of the present invention.

Fig. 3 is a schematic perspective exploded view of a heating mechanism and a liquid chamber mechanism of a liquid chamber module according to an embodiment of the present invention.

Fig. 4 is a schematic exploded perspective view of a heating mechanism of a liquid chamber module in an embodiment of the present invention.

Fig. 5 is an exploded perspective view of the housing of the heating mechanism of the liquid chamber module in the embodiment of the present invention.

Fig. 6 is a schematic sectional view of a liquid chamber module according to an embodiment of the present invention.

Fig. 7 is a schematic sectional view of a liquid chamber mechanism in the embodiment of the present invention.

Fig. 8 is a schematic sectional view of a liquid chamber module and a valve seat assembly according to an embodiment of the present invention.

Fig. 9 is an external view of another liquid chamber mechanism of the liquid chamber module in the embodiment of the invention.

Fig. 10 is a schematic sectional view of another embodiment of a liquid chamber mechanism of the liquid chamber module according to the embodiment of the present invention.

Fig. 11 is a schematic partial sectional view of a liquid chamber module according to an embodiment of the present invention, which is combined with the valve seat according to another embodiment of a liquid chamber mechanism.

[ notation ] to show

Liquid material extrusion device A1 valve seat

A11 switch A12 fastener

A13 piezoelectric actuator A131 fine-tuning piece

A132 first piezoelectric actuator a133 second piezoelectric actuator

A14 lever of A134 temperature detector

A141 support end A142 support

A143 force resisting end A144 force applying part

A145 slotted hole A146 positioning piece

A15 pushing the top end of A151

A152 rod part A153 elastic part

A16 valve hole A161 fixed part

A1621 chamber of A162 carrier

A1622 Via A17 sidewall

A171 wire groove A172 guide hole

A173 air port A174 temperature switch

Top wall of A175 temperature detector A18

A181 notch A19 bottom wall

A191 pinhole A1911 liquid gel solid

A192 pocket A1921 lead

A193 circuit board A2 liquid chamber module

A211 cover of A21 heating mechanism

A2111 Long side A2112 first groove side

A2113 opening A2114 short side member

A2115 second inter-slot A2116 opening

A2117 hollowed-out interval A212 die holder

A2121 first chamber A2122 fastener

A2123 opening, A2124 third groove

A2125 opening A2126 base

Long side of A2127 and short side of A2128

A2129 Top seat A2130 second chamber

A2131 placing interval A2132 third chamber

A2133 bottom cover A2134 channel

A214 pin A215 terminal

A2151 circuit board A216 hoop cover

A2161 hollow-out interval A217 heater

A2171 wire A218 temperature sensor

A2181 lead A219 heat-conducting glue

A22 liquid chamber mechanism A221 adapter

A2211 transfer passage A222 liquid chamber seat

A2221 chamber A2222 connecting seat

A2223 connecting hole A2224 positioning part

A2225 receiving hole A2226 clearance

A223 pivot seat A2231 ring edge

A2232 sealing piece A2233 positioning seat

A2234 positioning hole A2235 guide groove

A2236 plunger chamber A2237 shaft hole

A2238 collar A2239 opening

A2241 fixed part of A224 valve nozzle seat

A2242 chamber A2243 opening

A2244 valve nozzle A225 liquid chamber

A226 plunger A2261 head

A2262 end of the rod part A2263

A31 wiring terminal of A3 control part

A4 fixed seat A41 gas transmission joint

A42 channel A5 liquid storage cylinder

A51 first fastening mechanism A52 second fastening mechanism

Liquid chamber mechanism for conveying pipe B through A53

B1 liquid chamber seat B11 bearing seat

B12 neck B121 screw hole

B13 Chamber B14 junction

B15 connecting hole B16 accommodating hole

B2 adaptor B21 delivery track

B3 pivot seat B31 flange

B32 pivot part B321 base

B322 footstock B33 lower pivot part

B35 axle hole of B34 plunger chamber

B36 seal B37 shaft seal

B38 opening B39 shaft seal

B4 valve seat B41 suite

B411 external thread B42 chamber

B421 bottom edge B43 opening

Valve nozzle B441 conical surface B44

B5 liquid chamber B6 plunger

B61 head B611 positioning part

B62 rod B63 end

B7 elastic member C valve seat

C1 accommodation space C2 chamber

C3 neck hole C4 sleeve seat

C41 pivot part C42 fastening part

C421 against part C5 piezoelectric actuator

C61 resisting end of C6 lever

C611 pivot groove C62 force application part

C7 elastic member

Detailed Description

Referring to fig. 1, in the embodiment of the present invention, the liquid material extruding apparatus is shown as an example, the liquid material extruding apparatus a is provided with a valve seat a1, a liquid chamber module a2 is disposed below the valve seat a1, a control portion A3 is disposed above the valve seat a1, a control circuit board and related circuits are disposed in the control portion A3, and two connection terminals a31 are disposed above the control portion A3; one side of the valve seat A1 is provided with a fixed seat A4 for fixing the machine station to be positioned properly, the fixed seat A4 is provided with a gas transmission joint A41, cold gas can be transmitted through the fixed seat A4 and guided into the valve seat A1 for cooling; the other side opposite to the fixed seat a4 is provided with a liquid storage cylinder A5, the liquid storage cylinder A5 is arranged on one side of the valve seat a1 by a first buckling mechanism a51 positioned at the upper part and a second buckling mechanism a52 positioned at the lower part, a conveying pipe a53 is arranged below the liquid storage cylinder A5 and connected with the liquid chamber module a2 so as to convey the liquid material in the liquid storage cylinder A5 to the liquid chamber module a2, the valve seat a1 is provided with a switch a11, and the switch a11 can operate a fastener a12 positioned at the front side and the rear side of the valve seat a1 to buckle or release the liquid chamber module a2, so that the liquid chamber module a2 can be combined with the valve seat a1 or can be completely separated from the valve seat a 1.

Referring to fig. 2-3, the liquid chamber module a2 includes a heating mechanism a21 and a liquid chamber mechanism a 22; referring to fig. 3, the heating mechanism a21 has a rectangular frame-shaped housing a211, the housing a211 has a mold base a212, the housing a211 is made of a material that is not easy to conduct heat, such as engineering plastic, and the mold base a212 is made of a material that is easy to conduct heat, such as metal; a first slot space a2112 is correspondingly arranged on each of the front and rear long side pieces a2111 of the housing a211, and an opening a2113 is respectively arranged above each first slot space a 2112; one of the two short side pieces A2114 on the left and right of the housing A211 is provided with a second slot A2115, and an opening A2116 is arranged above the second slot A2115; the die holder a212 is provided with a first accommodating chamber a2121 in a circular pit shape, the outer sides of the die holder a212 at the front side and the rear side of the first accommodating chamber a2121 are respectively provided with a convex buckle body a2122, and the buckle body a2122 is just positioned in an interval hollowed out by the first inter-groove a2112 of the housing a 211; an opening A2123 is formed above the first chamber A2121, a third chamber A2124 is arranged at one side, an opening A2125 is formed above the third chamber A2124, and the third chamber A2124 corresponds to and is communicated with a second chamber A2114 of the housing A211; a plurality of pin bodies A214 are arranged on the other side of the die holder A212 opposite to the first accommodating chamber A2121 at intervals, and a plurality of terminals A215 are arranged on the die holder A212 between the pin bodies A214 and the first accommodating chamber A2121; a hoop cover A216 is arranged on the periphery of the upper part of the first chamber A2121, the hoop cover A216 is made of materials which are not easy to conduct heat, a circular hollow space A2161 is arranged in the center of the hoop cover A216, and the size of the hollow space A2161 can be used for the liquid chamber mechanism A22 to pass through up and down;

the liquid chamber mechanism A22 is provided with an adapter A221 for leading liquid material into the liquid chamber mechanism A22; the liquid chamber mechanism a22 is not fixed by any screws and is directly accommodated in the first chamber a2121 of the heating mechanism a21, and the adapter a221 of the liquid chamber mechanism a22 is disposed in and protrudes out of the third chamber a2124 of the first chamber a2121 and the second chamber a2115 of the housing a211 through the opening a2125 above the third chamber a2124 of the first chamber a2121 and the opening a2116 above the second chamber a2115 of the housing a 211.

Referring to fig. 4 and 5, the casing a211 of the heating mechanism a21 is formed by two long side members a2111 forming long sides and two short side members a2114 forming short sides, which together form a rectangular frame, and a rectangular hollow space a2117 is provided below the frame of the casing a211, and the hollow space a2117 can be embedded with a base a2126 protruding below the heat conducting mold a 212; the die holder A212 is a rectangular cube, and has two long sides A2127 forming long sides and two short sides A2128 forming short sides, the two buckle bodies A2122 are respectively arranged on the two long sides A2127 corresponding to each other in front and back, and the third slot A2124 is arranged on one side of the two short sides A2128; the long side members a2111 or the short side members a2114 of the housing a211 are not fixed to each other, each long side member a2111 or the short side member a2114 is directly screwed and fixed to the corresponding side of the die holder a212, and each long side member a2111 or the short side member a2114 can be independently detached and separated from the corresponding side of the die holder a 212; convex top seats A2129 are respectively arranged at four corners above the die seat A212, hollow sections are formed at the side edges of the die seat A212 among the top seats A2129 to enable the top seats A2129 to be separated, and the height of each top seat A2129 is approximately flush with the peripheral height of the housing A211.

Referring to fig. 4 and 6, a recessed second chamber a2130 is disposed above the die holder a212 between the pin a214 and the first chamber a2121 of the die holder a212, a carrying area a2131 adjacent to the first chamber a2121 is disposed between the second chamber a2130 and the first chamber a2121, a third chamber a2132 is formed by recessing the base a2126 protruding from the lower portion of the die holder a212, and the bottom of the third chamber a2132 is covered by a bottom cover a 2133; a channel A2134 is arranged between the second accommodating chamber A2130 and the third accommodating chamber A2132; the second chamber a2130 is provided with a circuit board a2151 for the loading and connection of the terminal a215, the loading section a2131 is provided with a heater a217, the heater a217 heats the liquid chamber mechanism a22 in a manner of separating the die holder a212, the lead a2171 of the heater a217 is connected with the circuit board a2151 through the second chamber a2130, the third chamber a2132 is provided with a temperature sensor a218, and the lead a2181 of the temperature sensor a218 is connected with the circuit board a2151 through the channel a2134 to the second chamber a 2130; the liquid solidified heat conducting glue A219 is filled under the circuit board A2151 of the second chamber A2130 to seal the leads A2171 and A2181.

Referring to fig. 7, the liquid chamber mechanism a22 is an independently detachable component separated from the valve seat a1 and the die seat a212 of the liquid chamber module A2, and the liquid chamber mechanism a22 is provided with:

a liquid chamber seat A222, a cavity A2221 in the shape of a round pit is arranged in the liquid chamber seat A222, a connecting seat A2222 horizontally protrudes and extends from the periphery of the upper end of the liquid chamber seat A222 to one side in the transverse direction, a connecting hole A2223 with internal threads is arranged in the connecting seat A2222 and is communicated with the cavity A2221, the connecting seat A2222 is screwed with an adapter A221 which is an independent component and is provided with external threads, and a hole-shaped conveying channel A2211 is arranged in the adapter A221 and is communicated with the connecting hole A2223 and the cavity A2221; a convex positioning part A2224 is arranged above the connecting seat A2222; the bottom of the chamber A2221 is provided with a section of accommodating hole A2225 with a smaller diameter than the chamber A2221;

a pivot seat a223 disposed in the cavity a2221 of the liquid chamber seat a222, a flange a2231 protruding horizontally outward is disposed above the pivot seat a223, the flange a2231 seals a gap between the pivot seat a223 and the cavity a2221 by means of a sealing member a2232, the flange a2231 protrudes horizontally and laterally to one side to form a positioning seat a2233, and a positioning hole a2234 is opened on the positioning seat a 2233; the cylindrical outer circumference of the pivot seat A223 is concavely provided with a Z-axial guide groove A2235, liquid material input from the conveying channel A2211 of the adapter A221 can enter the guide groove A2235 and the cavity A2221, the positioning hole A2233 is just sleeved and embedded in the convex positioning part A2224 on the connecting seat A2222 of the liquid chamber seat A222, so that the guide groove A2235 of the pivot seat A223 is just correspondingly positioned on the same side of the connecting seat A2222 and the adapter A221, and the conveying channel A2211 is communicated with the connecting hole A2223 and the guide groove A2235; a clearance A2226 is kept between the bottom of the pivot seat A223 and the bottom of the cavity A2221, liquid enters the clearance A2226 through the guide groove A2235, the accommodating hole A2225 on the liquid chamber seat A222 is communicated with the clearance A2226 and can allow the liquid to flow between the accommodating hole A2225 and the clearance A2226; a plunger containing chamber A2236 is arranged in the pivot seat A223, a shaft hole A2237 communicated with the clearance A2226 and the containing hole A2225 is arranged below the plunger containing chamber A2236, and a shaft ring A2238 is arranged below the shaft hole A2237; an opening A2239 is formed above the plunger chamber A2236;

a valve nozzle seat A224, the valve nozzle seat A224 is fixed at the lower end of the liquid chamber seat A222 by a fixing piece A2241, the valve nozzle seat A224 is provided with a concave accommodating chamber A2242, an opening A2243 is formed above the accommodating chamber A2242 and is butted and communicated with the accommodating hole A2225 of the liquid chamber seat A222, a valve nozzle A2244 in a thin hole shape is arranged below the accommodating chamber A2242, the upper end of the valve nozzle A2244 is communicated with the accommodating chamber A2242, and the lower end is communicated with the outside of the valve nozzle seat A224; the clearance A2226, the accommodating hole A2225 and the accommodating chamber A2242 are communicated with each other to form a liquid chamber A225;

a plunger a226, which is disposed in the plunger housing a2236 of the pivot seat a223, and includes a head portion a2261 with a larger rod diameter and a shorter rod length above the plunger, and a rod portion a2262 with a smaller diameter and a longer rod length below the head portion a2261, wherein the rod portion a2262 extends downward through the shaft hole a2237, and the lower end of the rod portion a2262 is disposed in the liquid chamber a225, and the radial direction of the rod portion a2262 is not in contact with the peripheral side wall surface of the liquid chamber a 225; the rod portion a2262 of the plunger a226 in the plunger chamber a2236 is sleeved with an elastic member a227 formed by a spring, and the elastic member a227 provides a restoring driving force for the first plunger a226 when compressed; when a force is applied to the plunger a226, the circular arc-shaped end portion a2263 at the bottom of the rod portion a2262 pushes the liquid material in the liquid chamber a225 against the valve nozzle a2244, so that the liquid material in the liquid chamber a225 is pushed out from the valve nozzle a 2244.

Referring to fig. 1 and 8, a piezoelectric actuator a13 finely adjusted by a fine adjustment piece a131 is disposed in the valve seat A1 of the liquid material extruding apparatus a, and the piezoelectric actuator a13 includes a first piezoelectric actuator a132 with a long length located below and a second piezoelectric actuator a133 with a short length located above in series; the piezoelectric actuator A13 is provided with a temperature detector A134 composed of a thermistor for detecting the temperature of the piezoelectric actuator A13; a lever A14 is arranged below the piezoelectric actuator A13, a supporting end A141 of the lever A14 is arranged on a supporting piece A142 below, the other force resisting end A143 is arranged at the upper end of a pressing and pushing piece A15, a force application part A144 of the lever A14 positioned between the supporting end A141 and the force resisting end A143 is pressed and applied by the piezoelectric actuator A13, a slotted hole A145 is arranged on the lever A14 between the force application part A144 and the force resisting end A143, and the slotted hole A145 is just used for a positioning piece A146 protruding from the inner bottom side of the valve seat A1 to pivot and embed, so that the left-right swing of the horizontal plane of the lever A14 is limited; the lower end of the valve seat A1 is provided with a valve hole A16, a cylindrical carrier seat A162 is fixedly arranged in the valve hole A16 through a fixing piece A161, a containing chamber A1621 is arranged in the carrier seat A162, and a through hole A1622 is arranged below the containing chamber A1621; the upper end of the pressure pushing piece A15 is provided with a top end part A151 with wider radial shaft diameter, the lower end is provided with a rod part A152 with narrower radial shaft diameter, the lower end of the rod part A152 passes through the through hole A1622, the part of the rod part A152 in the accommodating chamber A1621 is sleeved with an elastic piece A153 formed by a spring on the outer diameter, so that the top end part A151 keeps a driving force which upwards pushes against the resistance end A143 of the lever A14, and the necessary section of slight upward and downward movement of the rod part A152 is slightly convex to the lower part of the rod part A152 and is different from the lower part of the through hole A1622; the valve seat A1 has a rectangular cross section, its peripheral side includes two long sides parallel to each other and two short sides parallel to each other, the piezoelectric actuator A13 leans against a sidewall A17 of a short side in the valve seat A1, the fixed seat A4 locates outside the sidewall A17 of the valve seat A1 near the short side of the piezoelectric actuator A13, the valve seat A1 has a slot A171 recessed from outside to inside in the Z-axis direction near the outside of the sidewall A17, the sidewall A17 has a guide hole A172 communicating with the upper end of the slot A171 on the outside and communicating with the inside of the valve seat A1 on the inside near the upper end, the guide hole A172 locates above the fixed seat A4, a roof A18 of the valve seat A1 near the guide hole A172 has a notch A181 communicating with the inside and outside of the valve seat A1; a bottom wall a19 at the lower end of the valve seat A1 is provided with two pin holes a191 and a chamber a192 with an open lower end, a circuit board a193 is arranged in the chamber a192, the circuit board a193 is connected with a lead a1921 which extends to the lead a172 through the slot a171 and penetrates through the lead a172 inwards to enter the valve seat A1, and then penetrates through the notch a181 upwards to extend out of the upper end of the valve seat A1, the part of the circuit board a193 connected with the lead a1921 is located in the chamber a192, and the chamber a192 is filled with liquid gel fixing material a1911, such as silicone glue; the opening concavely arranged outside the wire casing A171 is covered and closed by the fixed seat A4, the fixed seat A4 is provided with a channel A42 to connect the gas transmission end A41 with a gas port A173 of the side wall A17 at the lower end of the valve seat A1, the gas port A173 is arranged at one side of the valve seat A1 corresponding to the first piezoelectric actuator A132, cold gas input by the gas transmission end A41 enters the valve seat A1 through the channel A42 and the gas port A173 to dissipate and reduce the temperature of the heat generated by the operation of the piezoelectric actuator A13, and the hot gas in the valve seat A1 is discharged through the guide hole A172, the side wall A17 of the valve seat A1 outside the guide hole A172 is provided with a temperature switch A174 which can detect the temperature of the whole valve seat A1 caused by overheating or accumulation of the piezoelectric actuator A13 due to the runaway fault of the heater A217; a temperature detector A175 composed of a thermistor is arranged on the inner side wall surface of the side wall A17 between the side wall A17 of the valve seat A1 and the piezoelectric actuator A13 to detect the temperature in the valve seat A1.

Referring to fig. 1, 4 and 8, the liquid chamber module A2 is configured such that the upper end of each top seat a2129 on the mold seat a212 abuts against the bottom wall a19 of the lower end of the valve seat A1, the pin a214 is inserted into the pin hole a191 of the bottom wall a19 of the lower end of the valve seat A1 for positioning, and the fasteners a12 on the front and rear sides of the valve seat A1 are configured to fasten the fastener a2122 protruding from the mold seat a212 in the liquid chamber module A2 by operating the switch a11 on the valve seat A1, so as to complete the fastened and assembled liquid chamber module A2, the upper end surface of the head a2261 of the plunger a226 thereon is interlocked and slightly protruded from the rod a152 outside the lower end of the through hole a1622 by the lower end of the pushing member a15 on the valve seat A1, and the terminal a215 on the plunger A2 abuts against the terminal A1 on the valve seat A1, so that the heater a193 a contacts 193 A1 a of the valve seat a accommodating chamber a192 corresponding to the circuit board A1 a may heat the circuit board 217 a via the heater A1 a The temperature sensor a218 supplies power and transmits temperature information sensed by the temperature sensor a218 back to the control section a 3.

The liquid chamber mechanism a22 may be replaced by the embodiment of the liquid chamber mechanism B shown in fig. 9 and 10 (the following mechanisms are the same as the previous embodiments and the same reference numerals are used), and the liquid chamber mechanism B is provided with:

a liquid chamber seat B1, the liquid chamber seat B1 is integrally provided with a bearing part B11 which is relatively positioned above and has larger radial diameter width and a neck part B12 which is relatively positioned below and has smaller radial diameter width, and the appearance of the bearing part B11 and the neck part B12 is approximately in a circular shaft shape; a cavity B13 in a round pit shape is arranged in the liquid chamber seat B1, the cavity B13 is arranged above a connecting hole B15 which is transversely and horizontally arranged in a connecting part B14 which is convexly arranged on one side of the bearing part B11 of the liquid chamber seat B1, a thread is arranged in the connecting hole B15 and is screwed with an adapter B2 provided with an external thread, the adapter B2 is an independent component and is internally provided with a conveying channel B21, and the connecting hole B15 is communicated with the conveying channel B21 and can guide liquid materials to enter the liquid chamber mechanism B; the bottom of the chamber B13 is provided with a section of accommodating hole B16 with a smaller aperture than the chamber B13, and the connecting hole B15 is arranged at one side of the accommodating hole B16 and communicated with the accommodating hole B16; a screw hole B121 with a larger diameter than the guide hole is concavely arranged at the bottom end of the accommodating hole B16 at the lower end of the neck part B12;

a pivot seat B3, wherein the pivot seat B3 is provided with a flange B31 which protrudes horizontally and annularly outwards, and the pivot seat B3 comprises an upper pivot part B32 positioned above the flange B31 and a lower pivot part B33 positioned below the flange B31; a plunger containing chamber B34 is arranged in the upper pivot part B32, a shaft hole B35 communicated with the accommodating hole B16 in the liquid chamber seat B1 is arranged below the plunger containing chamber B34, a base B321 which is relatively positioned below and has a larger radial diameter width and a top seat B322 which is relatively positioned above and has a smaller radial diameter width are integrally arranged on the upper pivot part B32, the base B321 and the top seat B322 are both in a circular shaft shape, and the radial diameter width of the base B321 is smaller than that of the flange B31; the appearance of the lower pivot part B33 is in a shape of a circular shaft and is arranged in the chamber B13 of the liquid chamber seat B1, a sealing element B36 at the position close to the flange B31 on the outer circumferential surface is used for sealing the clearance between the outer circumference of the lower pivot part B33 and the inner circumference of the chamber B13, and the lower end part of the lower pivot part B33 is provided with a shaft seal B37; an opening B38 is formed above the plunger accommodating chamber B34, and a shaft seal B39 is arranged on the periphery of the opening B38;

a valve seat B4, the valve seat B4 is made of tungsten steel and is sleeved from bottom to top by a sleeve B41, and is fixedly screwed in the screw hole B121 at the lower end of the liquid chamber seat B1 by virtue of an external thread B411 at the outer edge of the sleeve B41, the valve seat B4 is provided with a concave chamber B42, an opening B43 above the chamber B42 is butted and communicated with the accommodating hole B16 of the liquid chamber seat B1, an arc concave bottom edge B421 is formed below the chamber B42, a thin-hole-shaped valve seat B44 is arranged below the bottom edge B421, the upper end of the valve seat B44 is communicated with the chamber B42, and the lower end is communicated with the outside of the valve seat B4; the accommodating hole B16 and the accommodating chamber B42 are communicated and form a liquid chamber B5 for accommodating liquid materials together; a tapered conical surface B441 with a smaller lower circular diameter and a larger upper circular diameter is formed outside the valve nozzle B44 of the valve nozzle seat B4, and no member covers or shields the radial space on the outer periphery of the conical surface B441 in the height range of the conical surface B441;

a plunger B6, disposed in the plunger chamber B34 of the pivot base B3, including a head B61 with a larger rod diameter and a shorter rod length above the plunger, and a rod B62 with a smaller rod diameter and a longer rod length below the head B61, wherein a positioning portion B611 is disposed at the upper end of the head B61 in a protruding manner, the rod B62 extends downward through the shaft hole B35 and the shaft seal B37, and the lower end of the rod B62 is disposed in the liquid chamber B5 formed by the accommodation hole B16 and the chamber B42; an elastic piece B7 formed by a spring is sleeved outside the rod part B62 of the plunger B6 in the plunger accommodating chamber B34, and the elastic piece B7 provides a restoring driving force for the plunger B6 when being compressed; when the plunger B6 is driven, the plunger B6 abuts against the arc-concave bottom edge B421 surface below the chamber B42 of the valve seat B4 by an arc-shaped end B63 at the bottom of the rod B62, so that the liquid material in the liquid chamber B5 is extruded from the valve nozzle B44, but the rod B62 of the plunger B6 is not in contact with the circumferential side wall surface of the liquid chamber B5 in the radial direction.

Referring to fig. 11, the liquid chamber mechanism B is bounded by the flange B31, the lower pivot portion B33 and the liquid chamber seat B1 below the flange B31 are located in the first accommodating chamber a2121 on the die holder a212 of the heating mechanism a21 of the liquid chamber module A2, the base B321 of the upper pivot portion B32 above the flange B31 is located in an accommodating section C1 at the bottom of the valve seat C, the radial diameter width of the flange B31 is greater than that of the accommodating section C1, and the flange B32 abuts against the bottom of the valve seat C below the accommodating section C1, so that the upper pivot portion B32 cannot move upward any more; meanwhile, the radial diameter width of the flange B31 is larger than that of the chamber B13, and the flange is externally abutted against the upper end edge of the liquid chamber seat B1 above the chamber B13, so that the lower pivot part B33 cannot move downwards any more; a neck hole C3 communicated with a chamber C2 inside the valve seat C is arranged above the containing section C1, and the top seat B322 of the upper pivot part B32 is pivoted through the neck hole C3; a sleeve seat C4 is arranged in the neck hole C3, the sleeve seat C4 comprises a sleeve pivot part C41 which is pivoted outside the upper pivot part B32 and inside the inner diameter periphery of the neck hole C3, and a fixing and abutting part C42 which is positioned above and outside the neck hole C3, the fixing and abutting part C42 is eccentrically protruded to an abutting part C421 towards one side outside the upper pivot part B32, an elastic piece C7 formed by a spring is arranged between the abutting part C421 and a lever C6 driven by a piezoelectric actuator C5, a hollow hole-shaped pivot groove C611 is arranged at a position of a positioning part B611 convexly arranged at the upper end of the head B61 of the plunger B6 at a force resisting end 61 of the lever C6 so as to limit the left-right swinging of the lever C6; the elastic piece C7 is positioned between the resisting end C61 of the lever C6 and the force applying part C62; the liquid chamber mechanism B is not screwed to the valve seat C and the liquid chamber module a2 by screws or the like, so that the liquid chamber mechanism B is a mold assembly that can be independently disassembled and assembled from and to the valve seat C and the liquid chamber module a2, and when the liquid chamber module a2 is separated from the valve seat C (the switch a11 is operated as shown in fig. 1), the sealing member B36 seals the clearance between the outer circumference of the lower pivot portion B33 and the inner circumference of the chamber B13 to keep the pivot seat B3 and the liquid chamber seat B1 properly tightened and integrated, so that when the liquid chamber module a2 is disassembled, the entire liquid chamber mechanism B will be separated from the valve seat C and the heating mechanism a 21.

In the liquid material extruding device of the embodiment of the invention, the liquid chamber mechanism B is an assembly which can be independently disassembled and separated from the valve seat and the die holder, when the liquid chamber module A2 is disassembled, the whole liquid chamber mechanism B is separated from the valve seat C along with the liquid chamber mechanism B, and the liquid chamber mechanism B can be taken out from the die holder A212 of the heating mechanism A21 and separated without disassembling any screw fastener, so the liquid chamber mechanism B can be easily disassembled and cleaned, can be heated by a heat source in the heating mechanism A21, and can be easily processed, disassembled and assembled.

The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all simple equivalent changes and modifications made according to the claims and the description of the present invention are still within the scope of the present invention.

Claims

1. A liquid extrusion apparatus comprising:

a valve seat, in which a piezoelectric actuator is set, and a lever is pressed by the piezoelectric actuator to apply force;

the liquid chamber module is provided with a die holder, and the die holder is provided with a first accommodating chamber; a liquid chamber mechanism is arranged in the first accommodating chamber, and the liquid chamber mechanism comprises:

the liquid chamber seat is internally provided with a cavity, and the bottom of the cavity is provided with a section of accommodating hole with a smaller aperture than the cavity;

a pivot seat arranged in the cavity of the liquid chamber seat, a plunger containing chamber is arranged in the pivot seat, a shaft hole communicated with the containing hole in the liquid chamber seat is arranged below the plunger containing chamber, and an opening is formed above the plunger containing chamber;

a valve nozzle seat, which is provided with a containing chamber, an opening is arranged above the containing chamber and is butted and communicated with the containing hole of the liquid chamber seat, a valve nozzle with a thin hole is arranged below the containing chamber, the upper end of the valve nozzle is communicated with the containing chamber, and the lower end of the valve nozzle is communicated with the outside of the valve nozzle seat; the accommodating hole and the accommodating chamber are communicated and form a liquid chamber together;

the plunger piston is arranged in the plunger piston accommodating chamber in the pivot seat and comprises a head part and a rod part, wherein the head part is positioned above the head part and has a larger rod diameter, the rod part is positioned below the head part and has a smaller rod diameter, and the rod part extends downwards through the shaft hole and the lower end of the rod part is positioned in the liquid chamber; an elastic piece is sleeved outside the rod part of the plunger in the plunger accommodating chamber and provides a restoring driving force for the plunger when being compressed; the plunger pushes the liquid material in the liquid chamber by the rod part so that the liquid material in the liquid chamber is extruded from the valve nozzle;

the liquid chamber mechanism is an assembly which can be independently disassembled and separated from the valve seat and the die holder, and when the liquid chamber module is disassembled, the whole liquid chamber mechanism is separated from the valve seat along with the liquid chamber mechanism;

the method is characterized in that: the pivot seat is provided with a flange and comprises an upper pivot part positioned above the flange and a lower pivot part positioned below the flange; the lower pivot part is arranged in the cavity of the liquid chamber seat;

the liquid chamber mechanism is bounded by the flange, the lower pivot part below the flange and the liquid chamber seat are positioned in the first accommodating chamber, and the upper pivot part above the flange is arranged in an accommodating section at the bottom of the valve seat;

the radial diameter width of the flange is larger than that of the containing section, and the flange is externally blocked against the bottom of the valve seat below the containing section, so that the upper pivot part can not move upwards any more; meanwhile, the radial diameter width of the flange is larger than that of the cavity, and the flange is externally blocked against the upper end edge of the liquid chamber seat above the cavity, so that the lower pivot part cannot move downwards any more.

2. A liquid material extruding apparatus as claimed in claim 1, wherein the liquid chamber seat is integrally provided with a supporting portion located relatively above and having a larger radial diameter width and a neck portion located relatively below and having a smaller radial diameter width, and the supporting portion and the neck portion are substantially circular shaft-shaped in appearance.

3. The liquid material extruding apparatus according to claim 1, wherein the liquid chamber module comprises a heating mechanism, the heating mechanism is provided with a housing, the housing is provided with the die holder, the housing is made of a material which is not easy to conduct heat, the housing is formed by two long side members forming long sides and two short side members forming short sides which are combined together to form a rectangular frame shape, and a rectangular hollow space is arranged below the frame body of the housing; the front and the rear long side pieces of the housing are respectively provided with a first groove correspondingly, and an opening is respectively arranged above each first groove; one of the left and right short-side members of the housing is provided with a second slot, and an opening is arranged above the second slot; the long side pieces or the short side pieces of the housing are not mutually fixed, each long side piece or each short side piece is directly screwed and fixed on the corresponding side of the die holder, and each long side piece or each short side piece can be independently detached and separated from the corresponding side of the die holder.

4. The liquid extrusion apparatus as claimed in claim 3, wherein the four corners of the upper portion of the die holder are respectively provided with a convex top seat, the side edges of the die holder between the top seats are hollowed out to form a space between the top seats, and the height of each top seat is approximately equal to the height of the periphery of the casing.

5. The liquid material extruding apparatus as claimed in claim 1, wherein the chamber is provided above a connection hole screwed and communicated with an inside of an adaptor, and the connection hole is provided at one side of the accommodation hole and communicated therewith.

6. A liquid extrusion apparatus as claimed in claim 1, wherein the lower pivot portion seals a clearance between the lower pivot portion and the chamber by a sealing member, and a shaft seal is provided below the lower pivot portion.

7. A liquid extrusion apparatus as claimed in claim 6, wherein a neck hole is provided above the receiving space and communicates with the internal chamber of the valve seat, and a top seat of the upper pivot portion is pivoted through the neck hole.

8. The liquid material extruding apparatus according to claim 1, wherein the valve nozzle seat has a tapered outer surface with a smaller lower diameter and a larger upper diameter, and no member is provided around the outer circumferential side of the tapered outer surface to cover or block a radial space within a height range of the tapered outer surface.

9. The liquid extrusion apparatus as claimed in claim 1, wherein the valve seat is provided with a switch, the switch is operable to operate a fastener respectively located at the front and rear sides of the valve seat to fasten or release a fastener respectively located at the outside of the die seat of the liquid chamber module, and the liquid chamber module can be combined with or detached from the valve seat to be completely separated.

10. The liquid material extruding apparatus as claimed in claim 1, wherein the die holder is provided with a loading region adjacent to the first chamber, and the loading region is provided with a heater.