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CN-121973391-A - Pneumatic silica gel nozzle

CN121973391ACN 121973391 ACN121973391 ACN 121973391ACN-121973391-A

Abstract

The invention relates to a pneumatic silica gel nozzle which comprises a sub nozzle, a female nozzle, a nozzle body and a connecting unit which are sequentially connected from front to back, wherein a chute is arranged at the axis of the nozzle body, the tail end of a valve needle is slidably arranged in the chute, the front end of the valve needle is inserted into a third material conveying channel and a fourth material conveying channel, the shape of the needle head of the valve needle is the same as that of the outlet of the fourth material conveying channel, the nozzle body is provided with a strip-shaped through groove perpendicular to the axial direction, the through groove penetrates through the rear end of the chute, the long edge of the through groove is distributed along the axial direction of the nozzle body, a needle sealing ram is inserted in the through groove, the two ends of the needle sealing ram are exposed out of the side wall of the nozzle body, the needle sealing ram can move along the long edge of the through groove, the tail end of the valve needle is connected with the middle of the needle sealing ram, and the outer wall of the nozzle body is provided with a driving unit which is abutted with the needle sealing ram and drives the needle sealing ram to move forwards. The invention has the advantages of simple structure, convenient disassembly and assembly, convenient cleaning, ensuring the production quality of silica gel, being suitable for extrusion equipment of various models, and the like.

Inventors

  • FAN YAOMING
  • XIAO ZIQIANG
  • XIAO JIAYUN

Assignees

  • 东莞市积康螺杆有限公司

Dates

Publication Date
20260505
Application Date
20260329

Claims (12)

  1. 1. A pneumatic silica gel nozzle is characterized in that the pneumatic silica gel nozzle comprises a sub nozzle, a main nozzle, a nozzle body and a connecting unit which are sequentially connected from front to back, The axle center of the connecting unit is provided with a first material conveying channel which is communicated from front to back; the main nozzle comprises a main nozzle body, a main nozzle body and a sub nozzle body, wherein the main nozzle body is provided with a plurality of first material conveying channels, the main nozzle body is provided with a plurality of second material conveying channels, the main nozzle body is provided with a plurality of first material conveying channels, the first material conveying channels and the main nozzle body are provided with a plurality of second material conveying channels, and the front ends of the first material conveying channels are communicated with the first material conveying channels; The needle is characterized in that a chute is arranged at the axis of the nozzle body, the tail end of a needle is slidably arranged in the chute, the front end of the needle is inserted into the third material conveying channel and the fourth material conveying channel, the needle of the needle is identical to the outlet of the fourth material conveying channel in shape, the nozzle body is provided with a strip-shaped through groove perpendicular to the axial direction, the through groove penetrates through the rear end of the chute, the long edge of the through groove is distributed along the axial direction of the nozzle body, a needle sealing ram is inserted into the through groove, the two ends of the needle sealing ram are exposed out of the side wall of the nozzle body, the needle sealing ram can move along the long edge of the through groove, the tail end of the needle is connected with the middle of the needle sealing ram, and a driving unit which is in butt joint with the needle sealing ram and drives the needle sealing ram to move forwards is arranged on the outer wall of the nozzle body.
  2. 2. The pneumatic silica gel nozzle as claimed in claim 1, wherein the nozzle body is T-shaped, a first clamping table and a second clamping table are sequentially arranged at the tail end of the nozzle body from front to back, and the outer diameter of the second clamping table is larger than that of the first clamping table and larger than that of the main body at the front side of the nozzle body.
  3. 3. The pneumatic silica gel nozzle as claimed in claim 2, wherein the driving unit comprises a piston sleeved on the outer wall of the nozzle body and a cylinder sleeve sleeved outside the nozzle body and fixed with the nozzle body, the cylinder sleeve is communicated with the front and rear of the nozzle body, the axis comprises a first cavity at the front end and a second cavity at the rear end, the inner diameter of the second cavity is the same as the outer diameter of the first clamping table, the side surface of the tail end of the cylinder sleeve is abutted with the second clamping table, the inner diameter of the first cavity is larger than the outer diameter of the main body at the front side of the nozzle body, the foremost end of the second cavity is provided with a first air inlet hole communicated with the outside, and the rearmost end of the second cavity is provided with a second air inlet hole communicated with the outside; The piston is T-shaped, and comprises a piston head and a push rod, a through sleeve channel is arranged at the axis of the piston, the inner diameter of the sleeve channel is matched with the outer diameter of the front main body of the nozzle body, the piston head is positioned in the second cavity, the outer diameter of the piston head is identical to the inner diameter of the second cavity, the push rod is inserted between the inner wall of the first cavity and the outer wall of the front main body of the nozzle body, a jack is arranged in the middle of the push rod, and the needle sealing ram penetrates through the jack.
  4. 4. The pneumatic silica gel nozzle as claimed in claim 3, wherein the cylinder sleeve is fixed with the nozzle body through a first bolt, the first bolt is perpendicular to the axial direction of the nozzle body, the first clamping table is provided with a first sealing groove, a first sealing ring is installed in the first sealing groove, a second sealing groove is arranged on the inner wall of the first cavity, and a second sealing ring is installed in the second sealing groove.
  5. 5. The pneumatic silica gel nozzle of claim 3 wherein the inner and outer walls of the piston head are provided with a seventh seal groove and an eighth seal groove, respectively, and wherein a seventh seal ring and an eighth seal ring are provided within the seventh seal groove and the eighth seal groove.
  6. 6. The pneumatic silica gel nozzle as claimed in claim 2, wherein the pneumatic silica gel nozzle is provided with a water cooling unit, the water cooling unit comprises a water jacket, the water jacket is sleeved on the outer wall of the female nozzle, the second clamping table is provided with a water inlet and a water outlet, the nozzle body, the female nozzle and the water jacket are internally provided with a water inlet channel and a water outlet channel which are sequentially communicated, the tail ends of the water inlet channel and the water outlet channel are respectively communicated with the water inlet and the water outlet, and the front ends of the water inlet channel and the water outlet channel are communicated with a gap between the inner wall of the water jacket and the outer wall of the female nozzle.
  7. 7. The pneumatic silica gel nozzle as claimed in claim 6, wherein the female nozzle is T-shaped and comprises a first mounting plate and a body, a first bulge and a second bulge are respectively arranged at the front and rear of the side wall of the body, a third sealing groove and a fourth sealing groove are respectively arranged on the first bulge and the second bulge, and a third sealing ring and a fourth sealing ring are respectively arranged in the third sealing groove and the fourth sealing groove; the water jacket is T-shaped and comprises a second mounting disc and a jacket shell, a shaft hole penetrating through the water jacket from front to back is formed in the axis of the water jacket, the inner diameter of the shaft hole is identical to the outer diameters of the first bulge and the second bulge, and the second mounting disc, the first mounting disc and the front end face of the nozzle body are sequentially abutted and fixedly connected through a second bolt.
  8. 8. The pneumatic silica gel nozzle as set forth in claim 7, wherein a continuous water pipe channel is provided at the junction of the second mounting plate, the first mounting plate and the front end face of the nozzle body, a water pipe is installed in the water pipe channel, a fifth sealing groove and a sixth sealing groove are sequentially provided in front and rear of the outer wall of the water pipe, and a fifth sealing ring and a sixth sealing ring are installed in the fifth sealing groove and the sixth sealing groove, wherein the fifth sealing ring is located between the outer wall of the water pipe and the inner wall of the water pipe channel of the second mounting plate, the sixth sealing ring is located between the outer wall of the water pipe and the inner wall of the water pipe channel of the nozzle body, and a water passing hole is provided between the water pipe channel of the second mounting plate and the shaft hole.
  9. 9. The pneumatic silicone nozzle of claim 1, wherein the tail end of the valve needle is provided with a locating hole through which the needle sealing ram passes.
  10. 10. The pneumatic silica gel nozzle as claimed in claim 1, wherein the connection unit is a flange connection body, a fixing seat is arranged between the nozzle body and the flange connection body, a first installation cavity is arranged at the axis of the fixing seat, an internal thread is arranged on the inner wall of the first installation cavity, a second installation cavity is arranged at the axis of the rear end of the nozzle body, an inserting part matched with the second installation cavity, namely the first installation cavity, is arranged at the front end of the flange connection body, external threads are arranged on the side wall of the rear end of the inserting part, the nozzle body and the fixing seat are fixed through a plurality of third bolts, and a plurality of screw holes are formed at the rear end of the flange connection body.
  11. 11. The pneumatic silica gel nozzle as set forth in claim 1, wherein the connecting unit is a linear connector, a fixing seat is provided between the nozzle body and the linear connector, a first mounting cavity is provided at the axial center of the fixing seat, an internal thread is provided on the inner wall of the first mounting cavity, a second mounting cavity is provided at the axial center of the rear end of the nozzle body, an inserting part matched with the second mounting cavity, i.e. the first mounting cavity, is provided at the front end of the linear connector, an external thread is provided on the side wall of the rear end of the inserting part, the nozzle body and the fixing seat are fixed by a plurality of third bolts, and an external thread is provided on the side wall of the rear end of the linear connector.
  12. 12. The pneumatic silica gel nozzle according to claim 1, wherein the connecting unit is a linear connecting body, a second installation cavity is arranged at the axis of the tail end of the nozzle body, a plurality of inclined screw holes are obliquely and inwards arranged at the tail end of the nozzle body, an inserting part matched with the second installation cavity is arranged at the front end of the linear connecting body, a plurality of inclined steps are arranged on the side wall of the inserting part, when the inserting part is inserted into the second installation cavity and is abutted with the front wall of the second installation cavity, the inclined steps are just positioned in the same straight line with the inclined screw holes, and after the installation bolt is installed in the inclined screw holes, the front end of the installation bolt is abutted with the inclined steps, and external threads are arranged on the side wall of the rear end of the linear connecting body.

Description

Pneumatic silica gel nozzle Technical Field The invention relates to the technical field of extruder equipment, in particular to a pneumatic silica gel nozzle. Background Now, silica gel is used more and more widely, for example, the usage amount of infant products, medical equipment consumables, daily necessities and the like is increased, and silica gel processing technologies such as extrusion molding, hot press molding, injection molding and the like are also increased gradually, wherein the requirements of injection molding on equipment and technology are higher than those of other technologies, and complex products can be molded more. The existing silica gel injection equipment, in particular to a nozzle part, has a complex structure. Because the silica gel needs to be subjected to water-cooling temperature control during injection, the existing equipment is troublesome to install and detach because a plurality of sealing rings are required to be additionally arranged due to the complicated flow passage. Most of the existing silica gel nozzles can only aim at silica gel with a certain color and a certain specific flow, if the color of the silica gel is to be replaced, the cleaning is very troublesome, and aiming at injection with different flow, the whole equipment can only be replaced completely, and the cost is very high. Disclosure of Invention The invention aims to overcome the defects of the prior art and provide the pneumatic silica gel nozzle which is simple to assemble and disassemble and is suitable for various types of machines. In order to achieve the purpose of the application, the application provides the following technical scheme. In a first aspect, the application provides a pneumatic silica gel nozzle, which comprises a sub nozzle, a main nozzle, a nozzle body and a connecting unit which are sequentially connected from front to back, wherein a first material conveying channel which is communicated from front to back is arranged at the axis of the connecting unit; the sealing needle comprises a main nozzle body, a sealing needle and a sealing needle driving unit, wherein a first material conveying channel is arranged at the axis of the main nozzle body, a second material conveying channel is arranged at the axis of the main nozzle body, a third material conveying channel which is communicated with the main nozzle, a fourth material conveying channel which is communicated with the main nozzle body, a plurality of second material conveying channels are arranged inside the main nozzle body, the rear end of each second material conveying channel is communicated with the first material conveying channel, the front end of each second material conveying channel is communicated with the third material conveying channel, a sliding groove is arranged at the axis of the main nozzle body, the tail end of the valve needle is slidably arranged in the sliding groove, the front end of the valve needle is inserted into the third material conveying channel and the fourth material conveying channel, the needle head of the valve needle is identical to the outlet of the fourth material conveying channel in shape, the main nozzle body is provided with a long strip-shaped through groove which is perpendicular to the axial direction, the through groove penetrates through the rear end of the sliding groove, the long edge of the through groove is distributed along the axial direction of the main nozzle body, a sealing needle ram is inserted into the through groove, the two ends of the sealing needle ram body are exposed out of the side walls of the main nozzle body, the sealing needle ram can be driven by the sealing needle driving unit to move along the side of the sealing needle, and the sealing needle driving unit is in front of the sealing needle driving unit, and the sealing needle driving unit. In the application, the structures such as steps, gyrations and the like do not exist from the first material conveying channel to the fourth material conveying channel, so that the silica gel material does not stay for a long time from the entering nozzle to the leaving nozzle, and the product quality is effectively improved. And when the color change cleaning is needed, the cleaning is easier because there is no step or other part which can store glue, and the subsequent production is not affected. In an implementation manner of the first aspect, the nozzle body is T-shaped, and a first clamping table and a second clamping table are sequentially arranged at the tail end of the nozzle body from front to back, and the outer diameter of the second clamping table is larger than that of the first clamping table and larger than that of the front main body of the nozzle body. In one embodiment of the first aspect, the driving unit includes a piston sleeved on an outer wall of the nozzle body, and a cylinder sleeve sleeved outside the nozzle body and fixed to the nozzle body, the cylinder sleeve is communicated back and