CN117799117B - Injection nozzle for double-color injection molding machine capable of preventing injection liquid leakage - Google Patents
Injection nozzle for double-color injection molding machine capable of preventing injection liquid leakage Download PDFInfo
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- CN117799117B CN117799117B CN202410229100.5A CN202410229100A CN117799117B CN 117799117 B CN117799117 B CN 117799117B CN 202410229100 A CN202410229100 A CN 202410229100A CN 117799117 B CN117799117 B CN 117799117B
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- nozzle
- injection molding
- double
- injection
- cleaning
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 93
- 238000002347 injection Methods 0.000 title claims abstract description 88
- 239000007924 injection Substances 0.000 title claims abstract description 88
- 239000007788 liquid Substances 0.000 title claims abstract description 54
- 238000004140 cleaning Methods 0.000 claims abstract description 69
- 238000007790 scraping Methods 0.000 claims abstract description 9
- 239000004033 plastic Substances 0.000 claims description 77
- 229920003023 plastic Polymers 0.000 claims description 77
- 238000000465 moulding Methods 0.000 claims description 40
- 238000003756 stirring Methods 0.000 claims description 17
- 238000010030 laminating Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000002146 bilateral effect Effects 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000003086 colorant Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/20—Injection nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/12—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
- B29B7/16—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/20—Injection nozzles
- B29C45/24—Cleaning equipment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an injection nozzle for a double-shot injection molding machine for preventing injection liquid leakage, which relates to the technical field of injection molding machines and comprises a nozzle cleaning mechanism and a roller bracket arranged in the nozzle cleaning mechanism, wherein the inside of the nozzle cleaning mechanism is provided with the double-shot injection molding mechanism, the top of the double-shot injection molding mechanism is provided with an electric lifting rod, the nozzle cleaning mechanism comprises a nozzle bracket, the inside of the nozzle bracket is provided with a nozzle chute, the bottom of the nozzle bracket is fixedly provided with an outer nozzle, the inside of the nozzle chute is in sliding connection with a cleaning sleeve, the inside of the cleaning sleeve is provided with a cleaning sliding groove, the bottom of the cleaning sleeve is rotationally connected with a cleaning rotating ring, the cleaning sleeve is arranged to be capable of primarily cleaning the inner wall of the nozzle bracket, and simultaneously, an injection molding discharge hole at the bottom of the double-shot injection molding sleeve is blocked, and the inside of the nozzle bracket is secondarily cleaned by a spiral scraping blade.
Description
Technical Field
The invention relates to the technical field of injection molding machines, in particular to an injection nozzle for a double-color injection molding machine, which is capable of preventing injection liquid leakage.
Background
Injection molding machine, also known as injection molding machine or injection molding machine, is the main molding equipment that utilizes plastic forming die to make thermoplastic plastics or thermosetting plastics into the plastic products of various shapes, and injection molding machine need use injection nozzle to carry out the injection of plastics when carrying out injection molding, and current injection nozzle is single hole feeding generally, in case take place to block up and will thoroughly influence work, and current injection nozzle can take place plastics outflow when not using, it prevents to leak effectually poor, and can take place junction leakage problem, the leakproofness is not good.
Publication number CN 217729495U discloses a double-colored injection nozzle for injection molding machine, through installing first water conservancy diversion chamber and second water conservancy diversion chamber etc. for the device has optimized self structure, during the use, on the one hand, through all being provided with the first installation pipe fitting that has arc filter screen groove at the entry end of first water conservancy diversion chamber and second water conservancy diversion chamber, can filter the inside mould liquid of entering main part, the risk of jam has been alleviateed, and utilize the threaded connection structure between arc filter screen groove and the first installation pipe fitting, convenient to use person carries out dismouting with arc filter screen groove and changes, on the other hand, the silicon rubber insulating layer that utilizes the main part outer wall to set up, the thermal-insulated anti-scalding effect of main part outer wall has been promoted, through installing separator and heating chamber etc. for the device has optimized self performance, during the use, on the one hand, through being provided with the heating chamber in the inside of separator lateral wall, and at the internally mounted of heating chamber has temperature sensor and carbon fiber electrothermal fin, and then through set up the inside temperature control heating mechanism in the main part, can heat the inside injection molding liquid of first water conservancy diversion chamber and second water conservancy diversion chamber and prevent setting up the processing, further promote the main part, the main part has been set up through the mutual symmetric distribution, but the anti-scalding effect has been made in the first inner wall of the same side wall, the same type has the device is convenient for has been reached with the second inner wall, the device is convenient to have the same, but has been convenient for has two-to have the problem that has been reached, and has been reached the device, and has two has been convenient to have:
This bi-color injection nozzle for injection molding machine is through installing first water conservancy diversion chamber and second water conservancy diversion chamber etc. for the structure of self has been optimized to the device, during the use, on the one hand through all being provided with the first installation pipe fitting that has the arc filter screen groove at the entry end in first water conservancy diversion chamber and second water conservancy diversion chamber, can filter the inside mould liquid of entering main part, the risk of jam has been alleviateed, and utilize the threaded connection structure between arc filter screen groove and the first installation pipe fitting, the user of being convenient for carries out dismouting with the arc filter screen groove, on the other hand utilizes the silicone rubber insulating layer that the main part outer wall set up, the thermal-insulated anti-scalding effect of main part outer wall has been promoted, but do not set up relevant structure to jet out the mouth when moulding plastics to plastics liquid and clear up, lead to plastics liquid can remain in jet out the mouth department when moulding plastics, can produce solidification hardening's phenomenon along with the cooling of plastics liquid, thereby cause jet mouth blocking phenomenon, though can make plastics melt through the mode of heating, but melt and need certain time, thereby influence the efficiency of moulding plastics, energy consumption and manufacturing cost can be increased simultaneously.
An injection nozzle for a bi-color injection molding machine for preventing leakage of injection molding liquid is provided, so as to solve the problems set forth in the above.
Disclosure of Invention
The invention aims to provide an injection nozzle for a double-color injection molding machine for preventing leakage of injection molding liquid, which solves the problems that the injection nozzle for the double-color injection molding machine provided by the background art is not provided with related structures for cleaning an injection port when injection molding plastic liquid, so that the plastic liquid can remain at the injection port during injection molding, solidification and hardening phenomena can be generated along with cooling of the plastic liquid, and the injection port is blocked, and the plastic can be melted by a heating mode, but the melting needs a certain time, so that the injection efficiency is influenced, and the energy consumption and the production cost are increased.
In order to achieve the above purpose, the present invention provides the following technical solutions: an injection nozzle for a double-color injection molding machine for preventing injection liquid leakage comprises a nozzle cleaning mechanism and a roller bracket arranged in the nozzle cleaning mechanism;
The inside of the nozzle cleaning mechanism is provided with a double-shot injection mechanism, and the top of the double-shot injection mechanism is provided with an electric lifting rod;
Further comprises:
The nozzle cleaning mechanism comprises a nozzle bracket, a nozzle chute is formed in the nozzle bracket, and an outer nozzle is fixedly arranged at the bottom of the nozzle bracket;
the inside of the nozzle chute is connected with a cleaning sleeve in a sliding way, and a cleaning sliding groove is formed in the cleaning sleeve;
The bottom of the cleaning sleeve is rotatably connected with a cleaning rotating ring, and a plurality of spiral scraping blades are fixedly arranged on the outer side of the cleaning rotating ring.
Preferably, the inside of clean swivel becket is fixed mounting all around has the screw thread slider that rotates, gyro wheel support symmetry installs in the inside both sides of nozzle support, the tip rotation of nozzle support is connected with the lift pulley, the outside laminating of lift pulley is connected with lift connection rope, the one end and the clean sleeve fixed connection of lift connection rope, the material connecting pipe is annotated to the middle part both sides symmetry of nozzle support.
Preferably, the double-shot molding mechanism comprises a double-shot molding sleeve, a plurality of spiral rotating sliding grooves are formed in the outer side of the bottom of the double-shot molding sleeve, a first injection molding opening is formed in the two-sided symmetry of the top of the double-shot molding sleeve, and a second injection molding opening is formed in the two-sided symmetry of the bottom of the double-shot molding sleeve, which is close to the first injection molding opening.
Preferably, the injection molding discharge port has been seted up around the telescopic bottom of double-colored injection molding, the first connecting tube of top fixedly connected with of injection molding discharge port, the top fixedly connected with second connecting tube of first connecting tube, the tip fixed connection of second connecting tube and first injection molding port, the tip fixed connection of first connecting tube and second injection molding port respectively with the tip of injection molding discharge port.
Preferably, a first fixing support is fixedly arranged on the inner side of the top of the second connecting pipeline, an injection molding rotating shaft is rotatably connected to the bottom of the first fixing support, and an injection molding stirring blade is fixedly arranged on the outer side of the injection molding rotating shaft.
Preferably, the second fixing support is fixedly arranged in the second injection molding opening and at the bottom of the second connecting pipeline, a plurality of spring telescopic rods are fixedly arranged at the bottom of the second fixing support, valve springs are slidably connected to the outer sides of the spring telescopic rods, and valve pistons are fixedly connected to the bottoms of the valve springs.
Preferably, the top laminating of valve piston is connected with one-way fixed plate, the inside of one-way fixed plate has been seted up and has been connected the through-hole, one-way fixed plate fixed mounting is in the inside of second connecting tube and second injection molding mouth respectively.
Preferably, the double-shot sleeve is fixedly connected with the electric lifting rod, the electric lifting rod is fixedly connected with the inner wall of the top of the nozzle bracket, and the injection molding rotating shaft is rotationally connected with the second fixed bracket inside the second connecting pipeline.
Preferably, the rotating thread sliding block is in sliding connection with the double-color injection molding sleeve through a spiral rotating sliding groove, the cleaning rotating ring is in rotating connection with the double-color injection molding sleeve through the rotating thread sliding block and the spiral rotating sliding groove, the spiral scraping blade is in fit connection with the inside of the nozzle support, and the cleaning sleeve is in fit connection with the double-color injection molding sleeve.
Compared with the prior art, the invention has the beneficial effects that: this prevent injection nozzle for double-colored injection molding machine that injection molding liquid leaked not only can utilize clean sleeve to carry out preliminary clearance to the inner wall of nozzle support through setting up nozzle clean mechanism, can carry out the shutoff to the discharge gate of moulding plastics of double-colored injection sleeve bottom simultaneously, carries out secondary clearance to the inside of nozzle support through the screw doctor blade, can not only utilize electric lift pole to realize the switching of first mouth of moulding plastics and second mouth of moulding plastics through setting up double-colored injection mechanism, utilizes the stirring vane of moulding plastics to mix plastics liquid simultaneously, its specific content is as follows:
1. The nozzle cleaning mechanism is arranged, so that double-shot injection can be realized by using the injection connecting pipes on two sides of the nozzle support, plastics of different types or colors can be injected, the inner wall of the nozzle support can be primarily cleaned by arranging the cleaning sleeve, meanwhile, the injection discharge port at the bottom of the double-shot injection sleeve can be plugged, the leakage of plastic liquid is avoided, the rotation of the spiral scraping blade can be realized when the double-shot injection sleeve is lifted by the characteristics of threaded connection of the rotating threaded sliding block and the spiral rotating sliding groove in the cleaning rotating ring, the inside of the nozzle support is secondarily cleaned, and the phenomenon that the outer nozzle is blocked after the plastic liquid is adhered to the inner wall of the nozzle support and solidified is avoided, so that the subsequent use of the outer nozzle is influenced;
2. Through setting up double-colored mechanism of moulding plastics not only can utilize electric lift pole to drive double-colored sleeve of moulding plastics at the inside lift of nozzle support and remove, utilize lift pulley and lift to connect the rope and realize clean telescopic lift removal under the effect of clean sleeve self gravity, can clear up the plastics liquid on the nozzle support inner wall, simultaneously utilize lift to connect the rope and can make clean sleeve and double-colored sleeve relative movement of moulding plastics, can carry out the shutoff to the telescopic discharge gate of moulding plastics of double-colored, can be when moulding plastics through setting up axis of rotation and stirring vane of moulding plastics, the mobility that utilizes the plastics liquid drives stirring vane of moulding plastics and rotates, can mix plastics liquid, can control the rotation plastics of stirring vane of moulding plastics through the velocity of flow of control plastics liquid, thereby carry out the stirring of different degree to the plastics liquid of two kinds of different colours, can avoid plastics liquid to appear the phenomenon that flows back or flow from other mouths of moulding plastics through setting up valve piston and unidirectional fixation board.
Drawings
FIG. 1 is a schematic view of a three-dimensional structure of an overall section of the present invention;
FIG. 2 is a schematic view of a three-dimensional structure of a nozzle holder in a nozzle cleaning mechanism according to the present invention;
FIG. 3 is a schematic view of a three-dimensional structure of a cleaning sleeve and a cleaning rotating ring according to the present invention;
FIG. 4 is an enlarged schematic view of the area A of FIG. 2 according to the present invention;
FIG. 5 is a schematic view of a three-dimensional structure of a dual-color injection molding mechanism according to the present invention;
FIG. 6 is a schematic view of a cross-sectional three-dimensional structure of a two-shot sleeve according to the present invention;
FIG. 7 is a schematic view of a three-dimensional structure of an injection molded rotating shaft and an injection molded stirring blade according to the present invention;
FIG. 8 is a schematic view of a three-dimensional structure of a valve piston and a one-way fixed plate according to the present invention;
FIG. 9 is a schematic three-dimensional structure diagram of the connection state of the injection connecting pipe and the second injection port in the invention;
fig. 10 is a three-dimensional structure diagram of a connection state of a material injection connecting pipe and a first injection port in the present invention.
In the figure: 1. a nozzle cleaning mechanism; 101. a nozzle holder; 102. a nozzle chute; 103. an outer nozzle; 104. cleaning the sleeve; 105. cleaning the sliding groove; 106. cleaning the rotating ring; 107. a spiral scraping blade; 108. rotating the thread slider; 109. a roller bracket; 110. a lifting pulley; 111. lifting the connecting rope; 112. a material injection connecting pipe; 2. a double-color injection molding mechanism; 201. a double-shot sleeve; 202. a spiral rotating chute; 203. a first injection port; 204. a second injection port; 205. injection molding a discharge port; 206. a first connecting pipe; 207. a second connecting pipe; 208. a first fixing bracket; 209. a rotating shaft is injection molded; 210. injection molding stirring blades; 211. a second fixing bracket; 212. a spring telescoping rod; 213. a valve spring; 214. a valve piston; 215. a unidirectional fixing plate; 216. a connecting through hole; 217. an electric lifting rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-10, the present invention provides the following technical solutions: an injection nozzle for a double-shot injection molding machine for preventing injection liquid leakage comprises a nozzle cleaning mechanism 1 and a roller bracket 109 arranged in the nozzle cleaning mechanism 1, wherein the inside of the nozzle cleaning mechanism 1 is provided with a double-shot injection mechanism 2, the top of the double-shot injection mechanism 2 is provided with an electric lifting rod 217, the nozzle cleaning mechanism 1 comprises a nozzle bracket 101, a nozzle chute 102 is arranged in the nozzle bracket 101, an outer nozzle 103 is fixedly arranged at the bottom of the nozzle bracket 101, a cleaning sleeve 104 is connected in a sliding manner in the nozzle chute 102, a cleaning sliding groove 105 is arranged in the cleaning sleeve 104, a cleaning rotating ring 106 is rotatably connected at the bottom of the cleaning sleeve 104, a plurality of spiral scraping blades 107 are fixedly arranged on the outer side of the cleaning rotating ring 106, a rotating thread sliding block 108 is fixedly arranged around the inside of the cleaning rotating ring 106, the roller bracket 109 is symmetrically arranged at two sides of the inside of the nozzle bracket 101, the end part of the nozzle bracket 101 is rotationally connected with a lifting pulley 110, the outer side of the lifting pulley 110 is connected with a lifting connecting rope 111 in a laminating way, one end of the lifting connecting rope 111 is fixedly connected with a cleaning sleeve 104, two sides of the middle part of the nozzle bracket 101 are symmetrically provided with a material injection connecting pipe 112, a rotating thread sliding block 108 is in sliding connection with a double-color injection sleeve 201 through a spiral rotating sliding groove 202, a cleaning rotating ring 106 is rotationally connected with the double-color injection sleeve 201 through the rotating thread sliding block 108 and the spiral rotating sliding groove 202, a spiral scraping blade 107 is connected with the inside of the nozzle bracket 101 in a laminating way, the cleaning sleeve 104 is connected with the double-color injection sleeve 201 in a laminating way, the double-color injection connecting pipe 112 at two sides of the nozzle bracket 101 can be utilized by arranging a nozzle cleaning mechanism 1, thereby plastics with different types or colors can be injected, can carry out preliminary clearance to the inner wall of nozzle support 101 through setting up clean sleeve 104, can carry out the shutoff to the discharge gate 205 of moulding plastics of double-shot molding sleeve 201 bottom simultaneously, thereby avoid the phenomenon that the plastic liquid leaked, through the inside rotation screw thread slider 108 of clean swivel ring 106 and the characteristics of spiral rotation spout 202 threaded connection, can realize the rotation of spiral doctor-bar 107 when double-shot molding sleeve 201 goes up and down, thereby carry out secondary clearance to the inside of nozzle support 101, avoid the plastic liquid adhesion to harden the phenomenon that solidifies the back and cause outer nozzle 103 to block up on the inner wall of nozzle support 101, thereby influence the follow-up use of outer nozzle 103.
The double-shot injection mechanism 2 comprises a double-shot injection sleeve 201, a plurality of spiral rotating sliding grooves 202 are formed on the outer side of the bottom of the double-shot injection sleeve 201, a first injection port 203 is symmetrically formed on the two sides of the top of the double-shot injection sleeve 201, a second injection port 204 is symmetrically formed on the two sides of the bottom of the double-shot injection sleeve 201, an injection discharge port 205 is formed on the periphery of the bottom of the double-shot injection sleeve 201, a first connecting pipeline 206 is fixedly connected with the top of the injection discharge port 205, a second connecting pipeline 207 is fixedly connected with the top of the first connecting pipeline 206, the second connecting pipeline 207 is fixedly connected with the end of the second injection port 204 and the end of the injection discharge port 205, a first fixing bracket 208 is fixedly mounted on the inner side of the top of the second connecting pipeline 207, a rotation shaft 209 is rotatably connected with the bottom of the first fixing bracket 208, the outside of the injection molding rotation shaft 209 is fixedly provided with an injection molding stirring blade 210, the inside of the second injection molding opening 204 and the bottom of the second connecting pipeline 207 are fixedly provided with a second fixed bracket 211, the bottom of the second fixed bracket 211 is fixedly provided with a plurality of spring telescopic rods 212, the outside of the spring telescopic rods 212 is slidably connected with a valve spring 213, the bottom of the valve spring 213 is fixedly connected with a valve piston 214, the top of the valve piston 214 is fixedly connected with a one-way fixed plate 215, the inside of the one-way fixed plate 215 is provided with a connecting through hole 216, the one-way fixed plate 215 is respectively and fixedly arranged in the second connecting pipeline 207 and the inside of the second injection molding opening 204, the two-color injection molding sleeve 201 is fixedly connected with an electric lifting rod 217, the electric lifting rod 217 is fixedly connected with the top inner wall of the nozzle bracket 101, the injection molding rotation shaft 209 is rotationally connected with the second fixed bracket 211 in the second connecting pipeline 207, through setting up double-colored injection molding mechanism 2 not only can utilize electric lift rod 217 to drive double-colored injection molding sleeve 201 and remove at nozzle support 101's inside lift, utilize lift pulley 110 and lift connecting rope 111 to realize the lift of clean sleeve 104 under clean sleeve 104 self gravity's effect and remove, can clear up the plastics liquid on the nozzle support 101 inner wall, simultaneously utilize lift connecting rope 111 can make clean sleeve 104 and double-colored injection molding sleeve 201 relative movement, can carry out the shutoff to double-colored injection molding sleeve 201's injection molding discharge gate 205, can be when moulding plastics through setting up axis of rotation 209 and stirring vane 210 of moulding plastics, the mobility that utilizes the plastics liquid drives stirring vane 210 rotation of moulding plastics, can mix plastics liquid, the velocity of flow through control plastics liquid can control stirring vane 210 of moulding plastics's rotation plastics, thereby carry out the stirring of different degree to two kinds of plastics liquids of different colours, can avoid plastics liquid to appear the phenomenon that flows back or flow from other mouths of moulding plastics through setting up valve piston 214 and one-way fixed plate 215.
Working principle: before using the injection nozzle for the bi-color injection molding machine capable of preventing leakage of injection molding liquid, the whole situation of the device needs to be checked first to determine that normal operation can be performed, according to fig. 1-10, firstly, when plastic liquid needs to be stirred and mixed, the electric lifting rod 217 is started to drive the bi-color injection molding sleeve 201 to slide in the nozzle bracket 101 and the cleaning sleeve 104, the first injection port 203 of the bi-color injection molding sleeve 201 is connected with the injection connecting pipe 112, meanwhile, under the action of the lifting pulley 110 and the lifting connecting rope 111, the cleaning sleeve 104 is separated from the injection discharging port 205, the injection stirring blade 210 can be rotated by injecting two plastic liquids with different colors into the first injection port 203, the plastic liquid can be mixed, the rotating plastic of the injection stirring blade 210 can be controlled by controlling the flow rate of the plastic liquid, so as to stir two plastic liquids with different colors to different degrees, secondly, when the plastic liquids are not required to be mixed, the electric lifting rod 217 is used for aligning the second injection port 204 with the injection connecting pipe 112, so that the plastic liquid flows out of the injection discharging port 205 through the first connecting pipe 206 for injection molding, the phenomenon that the plastic liquid flows back or flows out of other injection molding ports can be avoided through the arrangement of the valve piston 214 and the one-way fixing plate 215, finally, after injection molding is finished, the electric lifting rod 217 is restored to the original state, lifting movement of the cleaning sleeve 104 is realized under the action of gravity of the cleaning sleeve 104, the plastic liquid on the inner wall of the nozzle bracket 101 can be cleaned, meanwhile, the cleaning sleeve 104 and the two-color injection sleeve 201 can be relatively moved by the lifting connecting rope 111, the injection discharging port 205 of the two-color injection sleeve 201 can be plugged, and the leakage phenomenon of the plastic liquid can be avoided, can carry out preliminary clearance through clean sleeve 104 to the inner wall of nozzle support 101, through the inside rotation screw thread slider 108 of clean swivel ring 106 and the characteristics of spiral rotation spout 202 threaded connection, can realize the rotation of spiral doctor blade 107 when double-colored sleeve 201 goes up and down to carry out the secondary clearance to the inside of nozzle support 101, avoid the plastics liquid adhesion to harden on the inner wall of nozzle support 101 and solidify the phenomenon that causes outer nozzle 103 to block up, thereby influence the follow-up use of outer nozzle 103.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (7)
1. An injection nozzle for a double-shot injection molding machine for preventing injection liquid leakage comprises a nozzle cleaning mechanism (1) and a roller bracket (109) arranged in the nozzle cleaning mechanism (1);
The inside of the nozzle cleaning mechanism (1) is provided with a double-shot injection mechanism (2), and the top of the double-shot injection mechanism (2) is provided with an electric lifting rod (217);
Characterized by further comprising:
The nozzle cleaning mechanism (1) comprises a nozzle bracket (101), a nozzle chute (102) is formed in the nozzle bracket (101), and an outer nozzle (103) is fixedly arranged at the bottom of the nozzle bracket (101);
The inside of the nozzle chute (102) is connected with a cleaning sleeve (104) in a sliding manner, and a cleaning sliding groove (105) is formed in the cleaning sleeve (104);
The bottom of the cleaning sleeve (104) is rotatably connected with a cleaning rotating ring (106), and a plurality of spiral scraping blades (107) are fixedly arranged on the outer side of the cleaning rotating ring (106);
The cleaning device is characterized in that rotating thread sliding blocks (108) are fixedly arranged around the inside of the cleaning rotating ring (106), roller brackets (109) are symmetrically arranged on two sides of the inside of the nozzle bracket (101), the end part of the nozzle bracket (101) is rotationally connected with a lifting pulley (110), the outer side of the lifting pulley (110) is connected with a lifting connecting rope (111) in a bonding mode, one end of the lifting connecting rope (111) is fixedly connected with a cleaning sleeve (104), and material injection connecting pipes (112) are symmetrically arranged on two sides of the middle of the nozzle bracket (101);
the double-colored mechanism (2) of moulding plastics includes double-colored sleeve (201) of moulding plastics, a plurality of spiral runner (202) have been seted up in the bottom outside of double-colored sleeve (201) of moulding plastics, first mouth (203) of moulding plastics have been seted up to the top bilateral symmetry of double-colored sleeve (201), second mouth (204) of moulding plastics have been seted up to the bottom bilateral symmetry that double-colored sleeve (201) is close to first mouth (203) of moulding plastics.
2. The injection nozzle for a two-color injection molding machine for preventing leakage of injection molding liquid according to claim 1, wherein: injection molding discharge ports (205) are formed in the periphery of the bottom of the double-color injection molding sleeve (201), first connecting pipelines (206) are fixedly connected to the top of the injection molding discharge ports (205), second connecting pipelines (207) are fixedly connected to the top of the first connecting pipelines (206), the second connecting pipelines (207) are fixedly connected with the end parts of the first injection molding ports (203), and the first connecting pipelines (206) are respectively fixedly connected with the end parts of the second injection molding ports (204) and the end parts of the injection molding discharge ports (205).
3. The injection nozzle for a two-color injection molding machine for preventing leakage of injection molding liquid according to claim 2, wherein: the top inboard fixed mounting of second connecting tube (207) has first fixed bolster (208), the bottom of first fixed bolster (208) rotates and is connected with injection molding axis of rotation (209), the outside fixed mounting of injection molding axis of rotation (209) has stirring vane of moulding plastics (210).
4. The injection nozzle for a two-color injection molding machine for preventing leakage of injection molding liquid according to claim 3, wherein: the inside of second mouth (204) of moulding plastics and the bottom of second connecting tube (207) are all fixed mounting have second fixed bolster (211), the bottom fixed mounting of second fixed bolster (211) has a plurality of spring telescopic links (212), the outside sliding connection of spring telescopic links (212) has valve spring (213), the bottom fixedly connected with valve piston (214) of valve spring (213).
5. The injection nozzle for a two-color injection molding machine for preventing leakage of injection molding liquid according to claim 4, wherein: the top laminating of valve piston (214) is connected with one-way fixed plate (215), connecting through-hole (216) have been seted up to the inside of one-way fixed plate (215), one-way fixed plate (215) fixed mounting is in the inside of second connecting tube (207) and second injection molding mouth (204) respectively.
6. The injection nozzle for a two-color injection molding machine for preventing leakage of injection molding liquid according to claim 5, wherein: the double-colored sleeve (201) of moulding plastics and electric lift pole (217) fixed connection, electric lift pole (217) and the top inner wall fixed connection of nozzle support (101), the axis of rotation (209) of moulding plastics is rotated with second connecting tube (207) inside second fixed bolster (211) and is connected.
7. The injection nozzle for a two-color injection molding machine for preventing leakage of injection molding liquid according to claim 1, wherein: the cleaning rotary ring (106) is rotationally connected with the double-color injection molding sleeve (201) through the rotary threaded sliding groove (202), the spiral scraping blade (107) is in fit connection with the inside of the nozzle support (101), and the cleaning sleeve (104) is in fit connection with the double-color injection molding sleeve (201).
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| CN202410229100.5A CN117799117B (en) | 2024-02-29 | 2024-02-29 | Injection nozzle for double-color injection molding machine capable of preventing injection liquid leakage |
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| CN202410229100.5A CN117799117B (en) | 2024-02-29 | 2024-02-29 | Injection nozzle for double-color injection molding machine capable of preventing injection liquid leakage |
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| CN117799117B true CN117799117B (en) | 2024-05-14 |
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