TWI770383B - Liquid material extrusion device - Google Patents

Abstract

The invention provides a liquid material extrusion device, comprising: a valve seat provided with a piezoelectric actuator; a mold seat liquid chamber module, the mold seat is provided with a first chamber accommodating a liquid chamber mechanism, The liquid chamber mechanism includes: a liquid chamber seat is provided with a chamber, and the bottom of the chamber is provided with an accommodating hole; a pivot seat is provided with a plunger accommodating chamber; The accommodating hole and the accommodating chamber together form a liquid chamber; a plunger is arranged in the accommodating chamber of the plunger, and the lower end of the plunger is located in the liquid chamber; an elastic piece; the plunger pushes the liquid material in the liquid chamber to extrude the liquid material from the valve nozzle; the liquid chamber mechanism is a component that can be disassembled independently and separated from the valve seat and the die seat When the liquid chamber module is lowered, the entire liquid chamber mechanism will be separated from the valve seat accordingly.

Description

Liquid material extrusion device

The present invention relates to a liquid material extrusion device, especially a liquid material extrusion device for containing liquid material for extrusion.

Press, the general liquid material extrusion device often indwells the viscous glue on the work piece by one of the methods of spraying, spotting, and coating. This type of liquid material extrusion device is usually provided with a valve seat. The piezoelectric actuator drives a lever to amplify the displacement, so as to indirectly push a plunger that extrudes the liquid material, so that the plunger can cause the plunger to the liquid chamber seat below the valve seat. The liquid material is pushed, so that the liquid material in the liquid chamber is extruded from a valve nozzle.

However, in the prior art, the liquid material in the liquid chamber in the liquid chamber seat often adopts liquid materials with different viscosities due to different processing and coating requirements. Therefore, the cleaning of the liquid chamber seat is very important, so it is convenient to disassemble and replace. Performance is a necessary consideration, but in general, the prior art often locks some of the components on the valve seat by screwing, which makes it difficult to dismantle and replace, and some designs do not take into account the difficulty of machining combination tolerances, resulting in various After the components are assembled, it is easy to seep into the glue, which makes cleaning difficult. Therefore, there is still room for improvement in the design of the mechanism related to the liquid chamber seat.

The purpose of the present invention is to provide a liquid material extrusion device that is easy to process, disassemble and assemble.

The liquid material extrusion device according to the purpose of the present invention includes: a valve seat, a piezoelectric actuator is arranged in the valve seat, and a lever is pressed and forced by the piezoelectric actuator; a liquid chamber module, Under the valve seat, the liquid chamber module is provided with a mold seat, the mold seat is provided with a first chamber; a liquid chamber The mechanism is accommodated in the first accommodating chamber, and the liquid chamber mechanism includes: a liquid chamber seat, a chamber is arranged in the liquid chamber seat, and a section of an accommodating hole with a diameter smaller than that of the chamber is arranged at the bottom of the chamber; a A pivot seat is arranged in the chamber of the liquid chamber seat, a plunger accommodation chamber is arranged in the pivot seat, and a shaft hole communicated with the accommodation hole in the liquid chamber seat is arranged below the plunger accommodation chamber. The plunger An opening is formed on the top of the chamber; a valve seat is provided with a chamber, an opening above the chamber is connected to and communicated with the accommodating hole of the liquid chamber seat, and a valve nozzle in the shape of a fine hole is arranged below the chamber , the upper end of the valve nozzle communicates with the chamber, and the lower end communicates with the outside of the valve seat; the accommodating hole and the chamber communicate with each other and form a liquid chamber together; a plunger, the plunger located in the pivot seat A container chamber, the plunger includes a head with a larger rod diameter above and a rod with a smaller rod diameter under the head, the rod extends down through the shaft hole and the lower end is located in the liquid The plunger in the plunger chamber is provided with an elastic member on the outer sleeve of the rod portion, which provides a driving force for the plunger to recover when the elastic member is compressed; the plunger uses the rod portion to the liquid chamber The liquid material in the liquid chamber is pushed out to extrude the liquid material in the liquid chamber from the valve nozzle; the liquid chamber mechanism is a component that can be independently disassembled and separated from the valve seat and the mold seat when the liquid chamber module is removed. , the entire liquid chamber mechanism will then be separated from the valve seat.

In the liquid material extrusion device according to the embodiment of the present invention, since the liquid chamber mechanism is a die assembly that can be independently dismantled and combined, when the liquid chamber module is removed, the entire liquid chamber mechanism will follow with the valve seat and the valve seat. The heating mechanism is separated, so the liquid chamber mechanism can be easily disassembled and cleaned, and can be heated by a heat source in the heating mechanism, and the entire liquid chamber mechanism can be easily processed, disassembled and assembled.

A: Liquid material extrusion device

A1: valve seat

A11: Switch

A12: Fastener

A13: Piezoelectric Actuator

A131: Trimming parts

A132: First Piezo Actuator

A133: Second Piezo Actuator

A134: Temperature detector

A14: Leverage

A141: Support end

A142: Supports

A143: Resistance end

A144: Force application department

A145: Slotted hole

A146: Positioning pieces

A15: Compression piece

A151: Top part

A152: Rod

A153: Elastic parts

A16: Valve hole

A161: Fixtures

A162: Carrier

A1621: Compartment

A1622: Through Hole

A17: Sidewall

A171: Wireway

A172: Pilot hole

A173: Air port

A174: Temperature switch

A175: Temperature detector

A18: Top Wall

A181: Notch

A19: Bottom wall

A191: pin hole

A1911: Liquid glue coagulate

A192: Compartment room

A1921: Wire

A193: circuit board

A2: Liquid chamber module

A21: Heating mechanism

A211: Cover

A2111: Long side pieces

A2112: The first slot

A2113: Opening

A2114: Short side pieces

A2115: The second slot

A2116: Opening

A2117: Hollow Interval

A212: Die base

A2121: The first chamber

A2122: Button body

A2123: Opening

A2124: The third slot

A2125: Opening

A2126: Base

A2127: Long side

A2128: Short side

A2129: Top seat

A2130: The second chamber

A2131: Placement section

A2132: The third chamber

A2133: Bottom cover

A2134: Channel

A214: Pin Body

A215: Terminal

A2151: Circuit board

A216: Hoop Cover

A2161: Hollow Interval

A217: Heater

A2171: Wire

A218: Temperature sensor

A2181: Wire

A219: Thermal Adhesive

A22: Liquid chamber mechanism

A221: Adapter

A2211: Conveyor Road

A222: Liquid chamber seat

A2221: Chamber

A2222: Connector

A2223: Connection hole

A2224: Positioning part

A2225: accommodating hole

A2226: Clearance

A223: Pivot seat

A2231: Rim

A2232: Seals

A2233: Positioning seat

A2234: Positioning hole

A2235: Guide trench

A2236: Plunger Compartment

A2237: Shaft hole

A2238: Collar

A2239: Opening

A224: Valve seat

A2241: Fixtures

A2242: Compartment

A2243: Opening

A2244: Valve Nozzle

A225: Liquid Chamber

A226: Plunger

A2261: Head

A2262: Rod

A2263: End

A3: Control Department

A31: Terminal block

A4: Fixed seat

A41: Gas connector

A42: Channel

A5: Liquid Reservoir

A51: The first buckle mechanism

A52: Second Buckle Mechanism

A53: Delivery tube

B: Liquid chamber mechanism

B1: Liquid chamber seat

B11: Bearing seat

B12: neck

B121: Screw hole

B13: Chamber

B14: Connection part

B15: Connection hole

B16: accommodating hole

B2: Adapter

B21: Conveyor Road

B3: Pivot seat

B31: Flange

B32: Upper hub

B321: Base

B322: Top seat

B33: Lower pivot

B34: Plunger chamber

B35: Shaft hole

B36: Seals

B37: Shaft seal

B38: Opening

B39: Shaft seal

B4: Valve seat

B41: Kit

B411: External thread

B42: Compartment room

B421: Bottom edge

B43: Opening

B44: Valve nozzle

B441: Cone

B5: Liquid chamber

B6: Plunger

B61: Head

B611: Positioning Department

B62: Rod

B63: End

B7: Elastic

C: valve seat

C1: Accommodating interval

C2: Chamber

C3: neck hole

C4: Sleeve

C41: sleeve pivot

C42: Solid contact part

C421: Arrival

C5: Piezo Actuator

C6: Leverage

C61: Resistance end

C611: Pivot slot

C62: Force application department

C7: Elastic

FIG. 1 is a three-dimensional schematic diagram of a liquid material extrusion device in an embodiment of the present invention.

FIG. 2 is a three-dimensional schematic diagram of a liquid chamber module in an embodiment of the present invention.

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

4 is a schematic exploded perspective view of the heating mechanism of the liquid chamber module according to the embodiment of the present invention.

5 is an exploded perspective view of the cover of the heating mechanism of the liquid chamber module according to the embodiment of the present invention.

6 is a schematic cross-sectional view of a liquid chamber module in an embodiment of the present invention.

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

8 is a partial cross-sectional schematic diagram of the combination of the liquid chamber module and the valve seat in the embodiment of the present invention.

FIG. 9 is a schematic view showing the appearance of another liquid chamber mechanism of the liquid chamber module in the embodiment of the present invention.

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

11 is a partial cross-sectional schematic diagram of the liquid chamber module using another embodiment of the liquid chamber mechanism in combination with the valve seat according to the embodiment of the present invention.

Referring to FIG. 1, the embodiment of the present invention takes the liquid material extrusion device as shown in the figure as an example. The liquid material extrusion device A is provided with a valve seat A1, and a liquid chamber module A2 is arranged under the valve seat A1. A control part A3 is arranged above the valve seat A1, the control part A3 is equipped with a control circuit board and related circuits, and two wiring terminals A31 are arranged above the control part A3; a fixed seat A4 is arranged on one side of the valve seat A1, which is used for In order to be fixed on the machine and properly positioned, the fixed seat A4 is provided with a gas delivery joint A41, which can transport cold gas through the fixed seat A4 and introduce it into the valve seat A1 for cooling; the other side of the fixed seat A4 is provided with There is a liquid storage cylinder A5, the liquid storage cylinder A5 is arranged on one side of the valve seat A1 with a first buckle mechanism A51 located above and a second buckle mechanism A52 located below, and the liquid storage cylinder A5 is arranged below the valve seat A5. A conveying pipe A53 is connected to the liquid chamber module A2 to convey the liquid material in the liquid storage tank A5 to the liquid chamber module A2. The valve seat A1 is provided with a switch A11, and the switch A11 can be operated on the valve seat A fastener A12 on the front and rear sides of A1 is used to snap or release the liquid chamber module A2, so that the liquid chamber module A2 can be combined with the valve seat A1 or be disassembled and completely separated from the valve seat A1.

2~3, the liquid chamber module A2 includes a heating mechanism A21 and a liquid chamber mechanism A22; please refer to FIG. 3, the heating mechanism A21 is provided with a rectangular frame-shaped cover A211, the cover A211 There is a mold seat A212 in it, and the cover A211 is made of a material that is not easy to conduct heat, such as Engineering plastic, the mold base A212 is made of a material that is easy to conduct heat, such as a metal material; a first slot A2112 is respectively defined on the front and rear long-side members A2111 of the cover A211, and a first slot A2112 is respectively provided above each of the first slots A2112 Opening A2113; one of the two short side pieces A2114 on the left and right sides of the casing A211 is provided with a second slot A2115, and an opening A2116 is arranged above the second slot A2115; the die base A212 is provided with a circular pit-shaped first In the chamber A2121, the outer sides of the mold base A212 on the front and rear sides of the first chamber A2121 are respectively provided with a protruding buckle body A2122. In the engraved section, an opening A2123 is formed above the first chamber A2121, a third slot A2124 is formed on one side, an opening A2125 is formed above the third slot A2124, and the third slot A2124 corresponds to the cover The second slot A2114 of the shell A211 is in communication with it; the top of the die base A212 is provided with a plurality of pin bodies A214 spaced apart from the other side of the first chamber A2121, and the pin bodies A214 are connected to the first chamber A plurality of terminals A215 are arranged above the mold base A212 between A2121; a hoop cover A216 is arranged on the upper periphery of the first chamber A2121. The hoop cover A216 is made of a material that is not easy to conduct heat, and a circular hollow is arranged in the center of the hoop cover A216. Section A2161, the size of the hollow section A2161 can be used for the liquid chamber mechanism A22 to pass up and down;

The liquid chamber mechanism A22 is provided with a joint A221 for guiding the liquid material into the liquid chamber mechanism A22; the liquid chamber mechanism A22 is directly accommodated in the first portion of the heating mechanism A21 without being fixed with any screws. In the chamber A2121, the joint A221 of the liquid chamber mechanism A22 passes through the opening A2125 above the third groove A2124 of the first chamber A2121 and the opening A2116 above the second groove A2115 of the housing A211 It is placed in the third slot A2124 of the first chamber A2121 and the second slot A2115 of the casing A211 and protrudes outside.

Please refer to FIGS. 4 and 5 , the cover A211 of the heating mechanism A21 is composed of two long-side members A2111 forming long sides and two short-side members A2114 forming short sides together to form a rectangular frame shape , and a rectangular hollow section A2117 is arranged under the frame of the cover A211, The hollow space A2117 can be embedded into a base A2126 protruding below the die base A212; the die base A212 is slightly rectangular and cube-shaped, and is provided with two long sides A2127 forming long sides and two forming short sides. One of the short sides A2128, two of the buckle bodies A2122 are respectively disposed on the two front and rear corresponding long sides A2127, and the third slot A2124 is disposed on one of the two short sides A2128; The long-side pieces A2111 or the short-side pieces A2114 of the casing A211 are not fixed to each other, and each of the long-side pieces A2111 or the short-side pieces A2114 is directly screwed and fixed to the mold base A212. Corresponding sides, and each of the long-side pieces A2111 or the short-side pieces A2114 can be independently disassembled and separated from the corresponding sides of the die base A212; The top seats A2129, the sides of the mold seats A212 between the top seats A2129 are hollowed out so that the top seats A2129 are spaced apart, and the heights of the top seats A2129 are approximately equal to the height of the peripheral edge of the casing A211 .

Please refer to FIGS. 4 and 6 . A recessed second chamber A2130 is provided above the mold seat A212 between the pin body A214 on the mold seat A212 and the first chamber A2121. The second chamber A2130 is connected to the first chamber A2130. A mounting area A2131 adjacent to the first chamber A2121 is set between a chamber A2121, and the base A2126 protruding below the mold base A212 is recessed to form a third chamber A2132, and the bottom of the third chamber A2132 is concave. and is covered by a bottom cover A2133; a channel A2134 is provided between the second chamber A2130 and the third chamber A2132; a circuit board A2151 is provided in the second chamber A2130 for the terminal A215 to be placed and connected, the carrier A heater A217 is arranged in the setting section A2131. The heater A217 heats the liquid chamber mechanism A22 in a manner of spacing the mold base A212. The wires A2171 of the heater A217 are connected to the circuit board A2151 through the second chamber A2130. , the third chamber A2132 is provided with a temperature sensor A218, the wire A2181 of the temperature sensor A218 is connected to the circuit board A2151 through the channel A2134 to the second chamber A2130; The bottom of the circuit board A2151 is filled with a liquid-solidified thermally conductive adhesive A219 to seal the wires A2171 and A2181.

Please refer to FIG. 7 , the liquid chamber mechanism A22 is a component that can be independently disassembled and separated from the valve seat A1 and the mold seat A212 of the liquid chamber module A2. The liquid chamber mechanism A22 is provided with: a liquid chamber seat A222, the The liquid chamber seat A222 is provided with a chamber A2221 in the shape of a circular pit, and a connecting seat A2222 is horizontally protruded horizontally from the upper end of the liquid chamber seat A222 to one side. The chamber A2221 communicates with the connecting seat A2222 and is screwed with the connecting head A221 which is an independent component and is provided with an external thread. The connecting head A221 is provided with a hole-shaped conveying channel A2211 and a connecting hole A2223, the chamber A2221 communicates with each other; a convex positioning portion A2224 is arranged above the connecting seat A2222; a section of an accommodating hole A2225 with a diameter smaller than that of the chamber A2221 is arranged at the bottom of the chamber A2221; a pivot seat A223 is arranged on the liquid chamber seat In the chamber A2221 of A222, a ring edge A2231 protruding horizontally outward is provided above the pivot seat A223. The ring edge A2231 seals the gap between the pivot seat A223 and the chamber A2221 by the seal A2232. The ring edge A2231 horizontally protrudes a positioning seat A2233 to one side, and a positioning hole A2234 is opened on the positioning seat A2233; the cylindrical outer circumference of the pivot seat A223 is concavely provided with a Z-axis guide groove A2235, which is connected by the The liquid material input from the conveying channel A2211 of the head A221 can enter the guide groove A2235 and the chamber A2221. The positioning hole A2233 is just embedded in the convex positioning portion A2224 on the connecting seat A2222 of the liquid chamber seat A222. , so that the guide groove A2235 of the pivot seat A223 is located on the same side of the connecting seat A2222 and the joint A221, and the conveying channel A2211 is communicated with the connecting hole A2223 and the guide groove A2235; the bottom of the pivot seat A223 is connected to the cavity A clearance A2226 is maintained between the bottom of the chamber A2221, and the liquid material enters the clearance A2226 through the guide groove A2235. The accommodation hole A2225 on the liquid chamber seat A222 communicates with the clearance A2226 and allows the liquid material to pass through the accommodation hole A2225 and the clearance A2226. Flow between the clearance A2226; a plunger chamber A2236 is arranged in the pivot seat A223, and a shaft hole A2237 communicated with the clearance A2226 and the accommodating hole A2225 is arranged below the plunger chamber A2236, and a shaft hole A2237 is arranged below the shaft hole A2237 There is a collar A2238; an opening A2239 is formed above the plunger chamber A2236; A valve seat A224, the valve seat A224 is fixed on the lower end of the liquid chamber seat A222 by a fixing member A2241, the valve seat A224 is provided with a concave chamber A2242, and an opening A2243 is formed above the chamber A2242 It is connected with the accommodating hole A2225 of the liquid chamber seat A222, and a valve nozzle A2244 in the shape of a fine hole is arranged below the chamber A2242. The upper end of the valve nozzle A2244 communicates with the chamber A2242, and the lower end communicates with the valve nozzle seat A224 communicates with the outside; the clearance A2226, the accommodating hole A2225, and the chamber A2242 communicate with each other and form a liquid chamber A225; a plunger A226, the plunger chamber A2236 located in the pivot seat A223, including the upper A head A2261 with a larger rod diameter and a shorter rod length, and a rod part A2262 with a smaller diameter and a longer rod length under the head A2261, the rod part A2262 extending downward through the shaft hole The lower end of A2237 is located in the liquid chamber A225, the rod portion A2262 is not in contact with the peripheral side wall surface of the liquid chamber A225 in the radial direction; the rod portion A2262 of the plunger A226 in the plunger chamber A2236 is formed by a spring provided outside the rod portion A2262. The elastic member A227 provides a driving force for the first plunger A226 to return when the elastic member A227 is compressed; the plunger A226 uses an arc-shaped end portion A2263 at the bottom of the rod portion A2262 to respond to the liquid chamber A225 when it is stressed. The liquid material in the liquid chamber A225 is pushed out and pressed against the valve nozzle A2244, so that the liquid material in the liquid chamber A225 is extruded from the valve nozzle A2244.

Please refer to FIGS. 1 and 8 , the valve seat A1 of the liquid material extruding device A is provided with a piezoelectric actuator A13 that is fine-tuned by a fine-tuning member A131. The piezoelectric actuator A13 includes an upper and a lower series connected A first piezoelectric actuator A132 located below and with a longer length and a second piezoelectric actuator A133 located above and with a shorter length; the piezoelectric actuator A13 is provided with a temperature detector composed of a thermistor A detector A134 is used to detect 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 member A142, and the other resistance end A143 is installed on the upper end of a pushing member A15, and the force-applying portion A144 of the lever A14 located between the supporting end A141 and the resistance end A143 is pressed and forced by the piezoelectric actuator A13. At the force-applying portion A144 A slot is provided on the lever A14 between the resistance end A143 A hole A145, the slot hole A145 is just for a positioning piece A146 protruding from the inner bottom side of the valve seat A1 to be pivotally embedded, so as to limit the left and right swing of the horizontal plane of the lever A14; the lower end of the valve seat A1 is provided with a valve hole A16, the valve A cylindrical bearing seat A162 is fixed in the hole A16 with a fixing member A161. The bearing seat A162 is provided with an accommodation chamber A1621, and a through hole A1622 is arranged below the accommodation chamber A1621; the upper end of the pushing member A15 is provided with a radial A top end portion A151 with a wider shaft diameter is provided with a rod portion A152 with a narrower radial shaft diameter at the lower end. An elastic member A153 consisting of a spring is sleeved on the outer diameter, so that the top end A151 maintains a driving force that pushes upward against the resistance end A143 of the lever A14, so that the lower part of the lever A152 is only slightly convex and a small section that moves up and down slightly. The necessary step is below the through hole A1622; the valve seat A1 has a rectangular section, and its surrounding sides include two parallel long sides and two parallel short sides, and the piezoelectric actuator A13 is located in the A side wall A17 on the short side of the valve seat A1, the fixed seat A4 is set outside the side wall A17 on the short side of the valve seat A1 against the piezoelectric actuator A13, the valve seat A1 is against the side wall A17 on the short side of the piezoelectric actuator A13 The outer side of the side wall A17 is provided with a wire groove A171 which is recessed from the outside to the inside in the Z-axis. The proximal upper end of the side wall A17 is provided with a guide hole A172 that communicates with the upper end of the wire groove A171 on the outside and communicates with the inside of the valve seat A1 on the inside. The hole A172 is located above the fixed seat A4, and a top wall A18 of the upper end of the valve seat A1 adjacent to the guide hole A172 is provided with a notch A181 to communicate the inside and the outside of the valve seat A1; a bottom wall A19 of the lower end of the valve seat A1 is provided with a notch A181. There are two pin holes A191 and a chamber A192 whose lower end is open. A circuit board A193 is arranged in the chamber A192. The circuit board A193 is connected with a wire A1921 that extends through the wire slot A171 to the guide hole A172, and Pass inward through the guide hole A172 to enter the valve seat A1, and then go up through the slot A181 to extend to the outside of the upper end of the valve seat A1. The part of the circuit board A193 connected to the wire A1921 is located in the chamber A192 , the chamber A192 is filled with a liquid glue solidified substance A1911, such as Silica gel; the concave opening outside the wire slot A171 is closed by the cover of the fixing seat A4, and the fixing seat A4 is provided with a channel A42 A gas port A173 connecting the gas delivery end A41 and the side wall A17 at the lower end of the valve seat A1, The air port A173 corresponds to one side of the first piezoelectric actuator A132 inside the valve seat A1, and the cold gas input from the gas delivery end A41 enters the inside of the valve seat A1 through the channel A42 and the air port A173. The heat generated by the operation of the piezoelectric actuator A13 is dissipated and cooled, and the hot gas inside the valve seat A1 is discharged through the guide hole A172, and a side wall A17 of the valve seat A1 outside the guide hole A172 is provided with a The temperature switch A174 can detect the overall temperature of the valve seat A1 caused by the overheating caused by the failure of the heater A217 or the accumulated temperature of the piezoelectric actuator A13; the side wall A17 of the valve seat A1 and the piezoelectric A temperature detector A175 composed of a thermistor is arranged on the inner side wall of the side wall A17 between the actuators A13 to detect the temperature in the valve seat A1.

1, 4, and 8, the liquid chamber module A2 pushes against the bottom wall A19 of the lower end of the valve seat A1 with the upper ends of the top seats A2129 on the mold seat A212, so that the pin body A214 is inserted into the valve The pin hole A191 of the bottom wall A19 at the lower end of the seat A1 is positioned, and by operating the switch A11 on the valve seat A1, the fasteners A12 on the front and rear sides of the valve seat A1 are connected to the liquid chamber module A2 The button body A2122 protruding from the outer side of the die seat A212 is buckled, and the assembled liquid chamber module A2 is buckled. The lower end of the pushing member A15 slightly protrudes below the through hole A1622 and the rod portion A152 is in contact with and interlocked with each other, while the terminal A215 on the liquid chamber module A2 is in contact with the chamber A192 at the lower end of the valve seat A1 The corresponding contacts on the circuit board A193 in the valve seat A1 can supply power to the heater A217 and the temperature sensor A218 of the heating mechanism A21 in the liquid chamber module A2 through the wire A1921 and the circuit board A193, The temperature information sensed by the temperature sensor A218 is sent back to the control unit A3.

The aforementioned liquid chamber mechanism A22 can be replaced by the embodiment of the liquid chamber mechanism B shown in Figures 9 and 10 (the following mechanisms are the same as those in the previous embodiment and use the same numbers), 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 portion B11 located relatively upward and having a larger radial diameter and width, and a neck portion B12 relatively located downward and having a smaller radial diameter and width. The bearing portion B11 and the neck portion B12 is roughly in the shape of a circular shaft; the liquid chamber seat B1 is provided with a chamber B13 in the shape of a circular pit, and the chamber B13 is set on the bearing portion B11 of the liquid chamber seat B1 and protrudes to one side Above a connecting hole B15 arranged horizontally and horizontally in a connecting portion B14, the connecting hole B15 is internally threaded and is screwed with a joint B2 provided with an external thread. The joint B2 itself is an independent component and is provided with a Conveying channel B21, the connecting hole B15 communicates with the conveying channel B21, and can guide the liquid material into the liquid chamber mechanism B; the bottom of the chamber B13 is provided with a section of accommodating hole B16 with a smaller diameter than the chamber B13, the connection A hole B15 is set on one side of the accommodating hole B16 and communicates with it; the bottom end of the accommodating hole B16 at the lower end of the neck B12 is recessed with a screw hole B121 with a larger diameter than the guide hole; a pivot seat B3, the pivot seat B3 is provided with an annular flange B31 protruding horizontally outward, the pivot seat B3 includes an upper pivot portion B32 located above the flange B31 and a lower pivot portion B33 located below the flange B31; the upper pivot portion B32 There is a plunger chamber B34 in the middle, and a shaft hole B35 communicated with the accommodating hole B16 in the liquid chamber seat B1 is arranged below the plunger chamber B34. The upper pivot portion B32 is integrally provided with a relatively downward and radial diameter The base B321 with a larger width and the top base B322 with a relatively small radial diameter and width are located above. Radial diameter and width; the lower pivot part B33 is in the shape of a circular shaft and is arranged in the chamber B13 of the liquid chamber seat B1, and the lower pivot is sealed by a seal B36 on the outer circumferential surface near the flange B31 The clearance between the outer circumference of the part B33 and the inner circumference of the chamber B13, a shaft seal B37 is provided at the lower end of the lower pivot part B33; an opening B38 is formed above the plunger chamber B34, and a peripheral edge of the opening B38 is provided with a Shaft seal B39; a valve seat B4, the valve seat B4 is made of tungsten steel and is sleeved from bottom to top by a kit B41, and is screwed to the liquid chamber by the outer thread B411 on the outer edge of the kit B41 The screw at the lower end of seat B1 A hole B121, the valve seat B4 is provided with a concave chamber B42, an opening B43 above the chamber B42 is connected to and communicated with the chamber B16 of the chamber seat B1, and an arc is formed below the chamber B42 A concave bottom edge B421, and a valve nozzle B44 in the shape of a fine hole is arranged below the bottom edge B421. The upper end of the valve nozzle B44 communicates with the chamber B42, and the lower end communicates with the outside of the valve seat B4; the The accommodating hole B16 and the accommodating chamber B42 communicate with each other and together form a liquid chamber B5 for accommodating the liquid material; the outer side of the valve nozzle B44 of the valve seat B4 forms a slanted cone-shaped cone surface B441 with a small circular diameter at the bottom and a large circular diameter at the top. Within the height range of the conical surface B441, there is no member covering or blocking the radial space on the outer peripheral side of the conical surface B441; a plunger B6 is arranged in the plunger chamber B34 in the pivot seat B3, It includes a head portion B61 with a larger rod diameter and a shorter rod length at the top, and a rod portion B62 with a smaller rod diameter and a longer rod length below the head portion B61. The upper end of the head portion B61 is protruding. A positioning part B611, the rod part B62 extends downward through the shaft hole B35 and the shaft seal B37, and the lower end of the rod part B62 is located in the liquid chamber B5 formed by the accommodating hole B16 and the accommodating chamber B42; The rod portion B62 of the plunger B6 in the chamber B34 is provided with an elastic member B7 composed of a spring, and the elastic member B7 provides a driving force for restoring the plunger B6 when compressed; the rod portion B62 of the plunger B6 The radial direction is not in contact with the peripheral side wall surface of the liquid chamber B5, but when the plunger B6 is driven, the plunger B6 abuts against the chamber of the valve seat B4 with an arc-shaped end portion B63 at the bottom of the rod portion B62 The arc concave bottom edge B421 surface below B42 makes the liquid material in the liquid chamber B5 extrude from the valve nozzle B44.

Please refer 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 mold of the heating mechanism A21 of the liquid chamber module A2 In the first accommodating chamber A2121 on the seat A212, the base B321 of the upper pivot portion B32 above the flange B31 is set in an accommodating section C1 at the bottom of the valve seat C, and the radial diameter of the flange B31 The width is larger than the accommodating interval C1, and the bottom of the valve seat C is blocked outside the accommodating interval C1, so that the upper pivot portion B32 can no longer be displaced upward; at the same time, the radial direction of the flange B31 is straight. The diameter and width are larger than that of the first chamber A2121, and the upper edge of the liquid chamber seat B1 is blocked outside the first chamber A2121, so that the lower pivot portion B33 can no longer be displaced downward; There is a neck hole C3 communicating with the chamber C2 inside the valve seat C, the top seat B322 of the upper pivot part B32 is pivoted through the neck hole C3; the neck hole C3 is provided with a set of seat C4, the set of seat C4 It includes a sleeve pivot C41 pivoting outside the upper pivot portion B32 and inside the inner diameter periphery of the neck hole C3, and a fixing portion C42 located above and outside the neck hole C3, the fixing portion C42 facing the upper pivot An abutting portion C421 protrudes from the outer side of the portion B32, an elastic member C7 formed by a spring is provided between the abutting portion C421 and a lever C6 driven by a piezoelectric actuator C5, and the resistance end C61 of the lever C6 is provided with A perforated pivot slot C611 is framed at the positioning portion B611 protruding from the upper end of the head B61 of the plunger B6 to limit the horizontal swing of the lever C6; the elastic member C7 is located at the resistance end C61 of the lever C6 Between the force-applying part C62; the liquid chamber mechanism B is not screwed with the valve seat C and the liquid chamber module A2 by any screws such as screws, so the liquid chamber mechanism B can be independently disassembled The mold assembly that is separated and combined with the valve seat C and the liquid chamber module A2, when the liquid chamber module A2 is separated from the valve seat C (operating switch A11 as shown in Figure 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 keeps the pivot seat B3 and the liquid chamber seat B1 in a proper tightness and is integrated. Therefore, when removing the liquid chamber module A2, The entire liquid chamber mechanism B will then be separated from the valve seat C and the heating mechanism A21.

In the liquid material extrusion device of the embodiment of the present invention, since the liquid chamber mechanism B is a component that can be independently disassembled and separated from the valve seat and the die seat, when the liquid chamber module A2 is removed, the entire liquid chamber mechanism B It will then be separated from the valve seat C, and the liquid chamber mechanism B can be taken out from the mold seat A212 of the heating mechanism A21 and separated without removing any screws, so the liquid chamber mechanism B can be easily disassembled and cleaned. The heating mechanism A21 can be heated by a heat source, and the liquid chamber mechanism B as a whole can be easily processed, disassembled and assembled.

However, the above are only preferred embodiments of the present invention, and should not be The scope of implementation of the present invention is limited, that is, any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the description of the invention are still within the scope of the patent of the present invention.

B: Liquid chamber mechanism

B1: Liquid chamber seat

B11: Bearing seat

B12: neck

B121: Screw hole

B13: Chamber

B14: Connection part

B15: Connection hole

B16: accommodating hole

B2: Adapter

B21: Conveyor Road

B3: Pivot seat

B31: Flange

B32: Upper hub

B321: Base

B322: Top seat

B33: Lower pivot

B34: Plunger chamber

B35: Shaft hole

B36: Seals

B37: Shaft seal

B38: Opening

B39: Shaft seal

B4: Valve seat

B41: Kit

B411: External thread

B42: Compartment room

B421: Bottom edge

B43: Opening

B44: Valve nozzle

B441: Cone

B5: Liquid chamber

B6: Plunger

B61: Head

B611: Positioning part

B62: Rod

B63: End

B7: Elastic

Claims (10)

A liquid material extrusion device, comprising: a valve seat, a piezoelectric actuator is arranged in the valve seat, a lever is pressed and exerted force by the piezoelectric actuator; a liquid chamber module is arranged on the valve Below the seat, the liquid chamber module is provided with a mold seat, the mold seat is provided with a first chamber; a liquid chamber mechanism is accommodated in the first chamber, and the liquid chamber mechanism includes: a liquid chamber seat, the liquid chamber The chamber seat is provided with a chamber, and the bottom of the chamber is provided with a section of accommodating hole with a smaller diameter than the chamber; a pivot seat is arranged in the chamber of the liquid chamber seat, and a plunger chamber is arranged in the pivot seat , a shaft hole communicated with the accommodating hole in the liquid chamber seat is provided below the plunger chamber, an opening is formed above the plunger chamber; a valve seat is provided with a chamber, and an opening is formed above the chamber It is butted and communicated with the accommodating hole of the liquid chamber seat, a valve nozzle in the shape of a fine hole is arranged below the accommodating chamber, the upper end of the valve nozzle is communicated with the accommodating chamber, and the lower end is communicated with the outside of the valve seat; the The accommodating hole and the accommodating chamber communicate with each other and form a liquid chamber together; a plunger, the accommodating chamber of the plunger is arranged in the pivot seat, the plunger includes a head with a larger rod diameter located above, and a head located on the head There is a rod portion with a smaller rod diameter below, the rod portion extends downward through the shaft hole and the lower end is located in the liquid chamber; the rod portion of the plunger in the plunger chamber is provided with an elastic member, the When the elastic member is compressed, it provides a driving force for the plunger to recover; the plunger pushes the liquid material in the liquid chamber with the rod part to extrude the liquid material in the liquid chamber from the valve nozzle; the liquid The chamber mechanism is a component that can be independently disassembled and separated from the valve seat and the mold seat. When the liquid chamber module is removed, the entire liquid chamber mechanism will be separated from the valve seat accordingly. The liquid material extrusion device according to claim 1, wherein the liquid chamber seat is integrally provided with a bearing portion located relatively upward and having a larger radial diameter and width, and a neck relatively located below and having a smaller radial diameter and width. , the bearing portion and the neck are roughly in the shape of a circular axis. The liquid material extrusion device according to claim 1, wherein a connecting seat protrudes from the periphery of the liquid chamber seat to one side, a connecting hole is provided in the connecting seat to communicate with the chamber, and the connecting seat and itself are an independent component And the connecting head with external thread is screwed, and the connecting head is provided with the conveying channel which communicates with the connecting hole and the chamber. The liquid material extrusion device according to claim 1, wherein the liquid chamber mechanism is provided with a joint, and the joint is placed in the first chamber through an opening above a third groove of the first chamber The third groove is protruding from the middle; a conveying channel is arranged in the joint, and a guiding groove is arranged on the outer circumference of the pivot seat, and the liquid material input from the conveying channel can enter the guiding channel and the chamber . The liquid material extrusion device according to claim 1, wherein the chamber is arranged above a connection hole, the connection hole is screwed and communicated with a connecting head, and the connection hole is arranged on one side of the accommodating hole and communicates with it . The liquid material extrusion device according to claim 1, wherein a flange is provided on the pivot base, and the pivot base includes an upper pivot portion located above the flange and a lower pivot portion located below the flange; the upper pivot The lower part includes a base with a larger radial diameter and a relatively lower base, and a top seat with a smaller radial diameter and a relatively upper seat; the lower pivot is arranged in the chamber of the liquid chamber seat; the lower pivot is The seal seals the clearance between the lower pivot portion and the chamber, and a shaft seal is arranged below the lower pivot portion. The liquid material extrusion device according to claim 6, wherein the liquid chamber mechanism is bounded by the flange, the lower pivot portion and the liquid chamber seat below the flange are located in the first chamber, and the flange The base of the upper pivot portion above is set in a chamber at the bottom of the valve seat, a neck hole communicated with the inner chamber of the valve seat is arranged above the chamber, and the top seat of the upper pivot portion is pivoted through the neck hole. The liquid material extrusion device according to claim 1, wherein the outer side of the valve nozzle of the valve seat forms an oblique cone-shaped cone surface with a small circular diameter at the bottom and a large circular diameter at the top within the height range of the cone surface part. There is no member covering or shielding the radial space on the outer peripheral side of the tapered surface. The liquid material extrusion device according to claim 1, wherein a switch is provided on the valve seat, and the switch can operate a fastener located on the front and rear sides of the valve seat, respectively, on the mold seat of the liquid chamber module. A buckle body respectively provided on the outer side is buckled or released, and the liquid chamber module can be combined with the valve seat or be disassembled and completely separated from the valve seat. The liquid material extrusion device according to claim 1, wherein the die base is provided with a placing section adjacent to the first chamber, and the placing section is provided with a heater.

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