CN217802892U

CN217802892U - High-precision micro-injection mechanism for liquid silica gel

Info

Publication number: CN217802892U
Application number: CN202221569013.7U
Authority: CN
Inventors: 蒙涛
Original assignee: Zhongshan Kraton Machinery Co ltd
Current assignee: Zhongshan Kraton Machinery Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-11-15
Anticipated expiration: 2032-06-22

Abstract

The utility model relates to a liquid silica gel high-precision micro-injection mechanism, belonging to the technical field of silica gel injection molding; the liquid silica gel high-precision micro-injection mechanism comprises a silica gel gun barrel, a screw assembly, an injection nozzle, a transmission rod, a feeding motor, a feeding assembly and a partition plate; the screw rod assembly is arranged in the feeding cavity of the silica gel gun barrel, the feeding channel and the feeding assembly are arranged on the silica gel gun barrel, so that liquid silica gel raw materials are uniformly fed into the feeding cavity through the feeding assembly, the liquid silica gel is uniformly and stably ejected, the ejection quantity control precision is high, the cooling water cavity is formed in the silica gel gun barrel, the cooling water circulation path with water flowing out from the lower end and the upper end is formed, the cooling effect on the silica gel gun barrel is good, the cooling is uniform, the cooling efficiency is high, and the condition that the liquidity of the liquid silica gel is reduced or solidified can be effectively avoided.

Description

High-precision micro-injection mechanism for liquid silica gel

Technical Field

The utility model relates to a liquid silica gel high accuracy trace injection mechanism belongs to the silica gel and moulds plastics technical field.

Background

The silica gel product has the excellent characteristics of no toxicity, transparency, high temperature resistance, direct contact with human bodies and the like, and is widely applied to industries of baby products, electronics, aviation, medical treatment, cosmetology, automobiles, solar cells and the like. The traditional silica gel product is produced by using a solid silica gel raw material, but the solid silica gel has the defects of complex forming process, multiple working procedures, low production efficiency and the like, so that the solid silica gel is not suitable for mass production, and the solid silica gel has high shrinkage rate, so that the injection quantity control precision is low and the high-precision silica gel product is difficult to produce; the existing liquid silica gel injection molding machine is usually lack of a cooling device, the temperature of the liquid silica gel in the gun barrel can be increased due to the fact that the gun barrel works and rubs for a long time to generate high temperature, and the silica gel is thermosetting plastic, so that the flowability of the silica gel is reduced and even the silica gel is solidified, and the quality problems of cracks and the like of injection molding products are easily caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problem that exists among the background art, the utility model provides a liquid silica gel high accuracy trace ejection mechanism, pay-off intracavity through at the silica gel barrel sets up screw assembly, and set up feed channel and feeding component on the silica gel barrel, thereby make the liquid silica gel raw materials evenly send into the pay-off intracavity through feeding component, and accomplish the injection through screw assembly's propelling movement effect, liquid silica gel jets out evenly stably, ejection volume control precision is high, through set up the cooling water cavity on the silica gel barrel, and set up the lower extreme and intake, the cooling water circulation route of upper end play water, cooling effect to the silica gel barrel is good, the cooling is even, cooling efficiency is high, can effectively avoid the condition that liquid silica gel mobility reduces or the solidification.

In order to solve the above problem, the utility model discloses a following technical scheme realizes:

liquid silica gel high accuracy trace ejection mechanism includes silica gel barrel, screw rod subassembly, penetrates mouth, transfer line, pay-off motor, feed subassembly, baffle, be provided with the pay-off chamber in the silica gel barrel, and screw rod subassembly sets up in the pay-off intracavity, and screw rod subassembly passes through the transfer line to be connected with the pay-off motor drive, penetrates the mouth and installs on the silica gel barrel, be provided with the feed channel that is linked together with the pay-off chamber on the silica gel barrel lateral wall, and still be connected with the feed subassembly that is linked together with the feed channel on the silica gel barrel, the position department that lies in the feed channel below on the silica gel barrel lateral wall is provided with the cooling water chamber, be provided with spiral helicine baffle in the cooling water chamber, and the upper and lower both ends in cooling water chamber are provided with delivery port and water inlet respectively.

Preferably, the feed subassembly includes connecting sleeve, feed valve, feeder sleeve, storage cylinder, pushes away material piston, pneumatic cylinder, connecting sleeve fixed mounting installs the feed valve in the connecting sleeve on the silica gel barrel, the feeder sleeve slope is installed on connecting sleeve, and the feeder sleeve is linked together through feed valve and feed channel, and the storage cylinder is installed to the feeder sleeve upper end, is provided with in the storage cylinder to push away the material piston, and installs the pneumatic cylinder that is used for the drive to push away the material piston on the storage cylinder.

Preferably, the transmission rod is horizontally provided with a screw hole, a locking screw is installed in the screw hole, and the screw rod assembly is detachably installed on the transmission rod through the locking screw.

The utility model has the advantages that:

the utility model discloses a set up screw assembly in the pay-off intracavity of silica gel barrel, and set up feed channel and supply assembly on the silica gel barrel, thereby make the liquid silica gel raw materials evenly send into the pay-off intracavity through supply assembly, and accomplish the injection through screw assembly's propelling movement effect, liquid silica gel jets out evenly stably, the control precision of jet-out volume is high, through setting up the cooling water cavity on the silica gel barrel, and set up the lower extreme and intake, the cooling water circulation route of upper end play water, it is good to the cooling effect of silica gel barrel, the cooling is even, cooling efficiency is high, can effectively avoid the condition that liquid silica gel mobility reduces or the solidification.

Drawings

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

fig. 2 is a front sectional view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is an enlarged view of a portion B of fig. 2.

Description of reference numerals: 1-a silica gel gun barrel, 2-a screw rod component, 3-a nozzle, 4-a transmission rod, 5-a feeding motor, 6-a feeding component, 7-a partition plate, 8-a locking screw, 101-a feeding cavity, 102-a feeding channel, 103-a cooling water cavity, 104-a water outlet, 105-a water inlet, 601-a connecting sleeve, 602-a feeding valve, 603-a feeding pipe, 604-a material storage barrel, 605-a material pushing piston and 606-a hydraulic cylinder.

Detailed Description

In order to make the objects, technical solutions, objectives and effects of the present invention obvious and understandable, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the skilled person can understand the preferred embodiments.

It should be noted that, in the description of the present invention, unless explicitly specified or limited, the terms "mounted," "connected," and "connected" should be broadly interpreted, i.e., they may be fixedly connected or detachably connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate.

In the utility model, as shown in fig. 1-4, the high-precision micro-injection mechanism for liquid silica gel comprises a silica gel barrel 1, a screw assembly 2, an injection nozzle 3, a transmission rod 4, a feeding motor 5, a feeding assembly 6 and a partition plate 7, wherein the silica gel barrel 1 is internally provided with a feeding cavity 101, the screw assembly 2 is arranged in the feeding cavity 101, the screw assembly 2 is in driving connection with the feeding motor 5 through the transmission rod 4, the injection nozzle 3 is arranged on the silica gel barrel 1, the side wall of the silica gel barrel 1 is provided with a feeding channel 102 communicated with the feeding cavity 101, and the silica gel barrel 1 is also connected with the feeding assembly 6 communicated with the feeding channel 102; thereby evenly supplying materials into the feeding cavity 101 through the feeding assembly 6, driving the screw assembly 2 to rotate through the transmission rod 4 by the feeding motor 5, and injecting the liquid silica gel raw material entering the feeding cavity 101 of the silica gel gun barrel 1 into the forming die through the injection nozzle 3 under the rotation action of the screw assembly 2; liquid silica gel is pushed by the screw assembly 2 of the auger structure, the liquid silica gel is uniformly and stably injected, the injection amount control precision is high, the material supply of the material supply assembly 6 is uniform and stable, the injection stability of the liquid silica gel can be further improved, the injection amount control precision is improved, and the method is suitable for producing high-precision silica gel products. A cooling water cavity 103 is arranged on the side wall of the silica gel gun barrel 1 below the feeding channel 102, a spiral partition plate 7 is arranged in the cooling water cavity 103, and a water outlet 104 and a water inlet 105 are respectively arranged at the upper end and the lower end of the cooling water cavity 103; thereby separation effect through heliciform baffle 7 makes cooling water cavity 103 be heliciform cavity structure, and through setting up the lower extreme and intaking, the cooling water circulation route of upper end play water, can make cooling water fully fill up cooling water cavity 103, and then improve the cooling effect to silica gel barrel 1, the cooling is even, cooling efficiency is high, can effectively solve the problem that silica gel barrel 1 long-time working friction produces high temperature and makes liquid silica gel heat, avoid causing the condition that liquid silica gel mobility reduces or solidifies, thereby can effectively improve the production quality of silica gel goods.

In the present invention, as shown in fig. 1-3, the feeding assembly 6 includes a connecting sleeve 601, a feeding valve 602, a feeding pipe 603, a material storage cylinder 604, a material pushing piston 605, and a hydraulic cylinder 606; the connecting sleeve 601 is fixedly arranged on the silica gel gun barrel 1, a feeding valve 602 is arranged in the connecting sleeve 601, the feeding pipe 603 is obliquely arranged on the connecting sleeve 601, the feeding pipe 603 is communicated with the feeding channel 102 through the feeding valve 602, a storage barrel 604 is arranged at the upper end of the feeding pipe 603, a pushing piston 605 is arranged in the storage barrel 604, and a hydraulic cylinder 606 for driving the pushing piston 605 is arranged at the upper end of the storage barrel 604; the material storage cylinder 604 is used for storing a liquid silica gel raw material to be injected, the material pushing piston 605 pushes out the liquid silica gel raw material at a constant speed under the driving action of the hydraulic cylinder 606, and then the liquid silica gel raw material enters the material feeding cavity 101 through the material feeding pipe 603 and the material feeding valve 602 at a constant speed; through with adapter sleeve 601 fixed mounting on silica gel barrel 1, with feeder sleeve 603 fixed mounting on adapter sleeve 601, can ensure that the integral erection of feed subassembly 6 is stable, make feed subassembly 6 carry out liquid silica gel injection operation in-process at silica gel barrel 1 along with silica gel barrel 1 synchronous motion to further improve the stability of the feed of feed subassembly 6, improve the stability that liquid silica gel jetted out and improve ejection volume control accuracy.

The utility model discloses in, as shown in fig. 2, 4, as preferred, transfer line 4 go up the level and be provided with the screw, install locking screw 8 in the screw, screw rod subassembly 2 is through locking screw 8 demountable installation on transfer line 4 to carry out the dismouting to screw rod subassembly 2, thereby be convenient for to the cleanness of silica gel barrel 1.

The utility model discloses a pay-off intracavity at the silica gel barrel sets up screw rod assembly, and set up feed channel and feed subassembly on the silica gel barrel, thereby make the liquid silica gel raw materials evenly send into the pay-off intracavity through feed subassembly, and accomplish the injection through screw rod assembly's propelling movement effect, liquid silica gel jets out evenly stably, the control precision of jet-out volume is high, through setting up the cooling water chamber on the silica gel barrel, and set up the lower extreme and intake, the cooling water circulation route of upper end play water, it is good to the cooling effect of silica gel barrel, the cooling is even, cooling efficiency is high, can effectively avoid the condition that liquid silica gel mobility reduces or solidify.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a liquid silica gel high accuracy trace mechanism of jeting out which characterized in that: liquid silica gel high accuracy trace ejection mechanism includes silica gel barrel (1), screw rod subassembly (2), penetrates mouth (3), transfer line (4), pay-off motor (5), feeding subassembly (6), baffle (7), be provided with in silica gel barrel (1) and send material chamber (101), screw rod subassembly (2) set up in sending material chamber (101), and screw rod subassembly (2) are connected with pay-off motor (5) drive through transfer line (4), penetrate mouth (3) and install on silica gel barrel (1), be provided with feed channel (102) that are linked together with pay-off chamber (101) on silica gel barrel (1) lateral wall, and still be connected with feed subassembly (6) that are linked together with feed channel (102) on silica gel barrel (1), the position department that lies in feed channel (102) below is provided with cooling water cavity (103), be provided with spiral helicine baffle (7) in cooling water cavity (103), and the upper and lower both ends of cooling water cavity (103) are provided with water inlet (104) and water inlet (105) respectively.

2. The liquid silicone rubber high-precision micro-injection mechanism according to claim 1, wherein: the feeding assembly (6) comprises a connecting sleeve (601), a feeding valve (602), a feeding pipe (603), a storage cylinder (604), a pushing piston (605) and a hydraulic cylinder (606), wherein the connecting sleeve (601) is fixedly installed on the silica gel gun barrel (1), the feeding valve (602) is installed in the connecting sleeve (601), the feeding pipe (603) is obliquely installed on the connecting sleeve (601), the feeding pipe (603) is communicated with a feeding channel (102) through the feeding valve (602), the storage cylinder (604) is installed at the upper end of the feeding pipe (603), the pushing piston (605) is arranged in the storage cylinder (604), and the hydraulic cylinder (606) used for driving the pushing piston (605) is installed at the upper end of the storage cylinder (604).

3. The liquid silicone rubber high-precision micro-injection mechanism according to claim 1, wherein: the screw hole is horizontally arranged on the transmission rod (4), the locking screw (8) is installed in the screw hole, and the screw rod assembly (2) is detachably installed on the transmission rod (4) through the locking screw (8).