CN109531851B - Addition type liquid silicone rubber mixing device for infant products - Google Patents
Addition type liquid silicone rubber mixing device for infant products Download PDFInfo
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- CN109531851B CN109531851B CN201910040770.1A CN201910040770A CN109531851B CN 109531851 B CN109531851 B CN 109531851B CN 201910040770 A CN201910040770 A CN 201910040770A CN 109531851 B CN109531851 B CN 109531851B
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- extending section
- section
- width
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- feeder
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Classifications
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- 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
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/32—Mixing; Kneading continuous, with mechanical mixing or kneading devices with non-movable mixing or kneading devices
- B29B7/325—Static mixers
-
- 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
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/60—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
Abstract
The invention relates to an addition type liquid silicone rubber mixing device for infant products, which solves the problem that bubbles are easy to generate in the stirring process of the liquid silicone rubber mixing device. The device comprises a first feeder and a second feeder, wherein a discharging pipe of the first feeder and a discharging pipe of the second feeder are connected with a mixer, and an outlet of the mixer is connected with a glue injection molding device, and the device is characterized in that: be equipped with the material mixing pipe in the blender, the both ends of material mixing pipe are the pipe section respectively, set up extension section about and between the pipe section at both ends in turn, and the upper and lower width of extension section is greater than the pipe section about, thickness is less than the pipe section about, and the width is greater than the pipe section about, thickness is less than the pipe section about the extension section. The colloid of the invention is continuously stretched up and down and left and right in the mixing tube and is fully mixed; no guide plate, no vane and the like are needed to be arranged in the flow passage of the material mixing pipe, the flow passage is ensured to be smooth, and the processing cost is low.
Description
Technical Field
The invention belongs to the technical field of liquid silicone rubber product production, relates to an addition type liquid silicone rubber production device, and particularly relates to an addition type liquid silicone rubber mixing device for infant products.
Background
The organic silicon material is a polymer material with excellent performance and semi-inorganic and semi-organic structures, belongs to the high and new technical field of national key support, and has wide application range. In recent years, the upstream organic silicon monomer in China has a large excess capacity, so that upstream enterprises have serious loss, and downstream products have various varieties, can adapt to different market demands, and are the parts with the best economic benefit in the whole industrial chain. Therefore, the downstream industry is greatly developed, the upstream monomer productivity is consumed, more and better downstream products are developed, and the downstream product is certainly the future development direction of the organosilicon industry in China.
As an emerging organosilicon downstream product, the addition type Liquid Silicone Rubber (LSR) is a novel organosilicon material which is nontoxic and odorless, has excellent weather resistance and chemical inertness, has high production efficiency and good product quality, and is popular in the market. The liquid silicone rubber has the advantages of deep vulcanization, rapid acceleration of vulcanization speed along with temperature rise, no low molecular substances in the vulcanization process of rubber materials, excellent dielectric property of vulcanized products, and the like. Compared with room temperature vulcanized silicone Rubber (RTV), the method avoids the defects of difficult deep vulcanization of the room temperature vulcanized silicone rubber, difficult adjustment of reaction speed, release of byproducts in vulcanization reaction, volume shrinkage in the vulcanization process and the like. Compared with hot vulcanized silicone rubber (HTV), the high-efficiency high-temperature vulcanized silicone rubber is a flowable liquid sizing material before vulcanization, is easy to meter and feed, and can meet the requirements of high-efficiency production processes such as injection molding and the like. Therefore, the addition type liquid silicone rubber is widely applied to various fields of food industry, infant products, medical care, electronic industry, electric power and electric industry, automobile industry and the like.
In the forming process of the addition type liquid silicone rubber product, the A sizing material and the B sizing material are usually required to be prepared, the A sizing material and the B sizing material enter an injection molding process after being mixed, the A sizing material and the B sizing material are liquid, but the viscosity of the liquid sizing material is high, the fluidity is poor, the mixing process is required to enter a mixing device for mixing, the mixing device is usually realized through stirring, air bubbles are easily generated in the sizing material in the stirring process, therefore, the generation of the air bubbles in the mixing process can be reduced by adopting a sealed tubular mixing device, and the traditional tubular mixer is provided with various structures such as guide plates, blades and the like in a runner, so that the runner is complex in structure, the processing and the forming of the runner of the mixer are not facilitated, and the flowing of the sizing material is also not facilitated during use.
Disclosure of Invention
The invention mainly aims at the problems that the existing liquid silicone rubber mixing device is easy to generate bubbles in the stirring process, the tubular mixing device is complex in structure, is not beneficial to the processing and forming of a mixer runner, and is also not beneficial to the flowing of sizing materials in use, and provides an addition type liquid silicone rubber mixing device for infant products.
The aim of the invention is mainly achieved by the following scheme: the utility model provides an addition type liquid silicone rubber compounding device for infant articles for use, includes first material loading ware and second material loading ware, and the blendor is connected to the discharging pipe of first material loading ware and second material loading ware, and the injecting glue forming device, its characterized in that are connected to the blender export: be equipped with the material mixing pipe in the blender, the both ends of material mixing pipe are the pipe section respectively, set up extension section about and between the pipe section at both ends in turn, and the upper and lower width of extension section is greater than the pipe section about, thickness is less than the pipe section about, and the width is greater than the pipe section about, thickness is less than the pipe section about the extension section. The first feeder and the second feeder respectively and controllably convey the A sizing material and the B sizing material, the viscosity of the A sizing material and the B sizing material is high, the A sizing material and the B sizing material need to be fully mixed in a mixer, in the scheme, a mixing pipe in the mixer is alternately provided with an upper extending section and a lower extending section, the A sizing material and the B sizing material are continuously spread up and down in the upper extending section and then are retracted towards the middle, then enter the left extending section and the right extending section and are continuously spread up and down in the left extending section and then are retracted towards the middle, and the process is continuously repeated in the process of alternately passing through the upper extending section and the lower extending section and the left extending section, so that the A sizing material and the B sizing material are fully mixed. The mixing pipe runner of this scheme need not to set up any guide plate, blade etc. in, guarantees that the runner is unobstructed, and the processing of mixing pipe only needs external processing design moreover, need not to add any structure in mixing pipe inside, and processing cost is low.
Preferably, the flowing direction of the sizing material in the material mixing pipe is taken as front and back, the upper and lower width direction of the upper and lower extension sections is an arc bulge with the front and back ends gradually becoming larger toward the middle width, and the left and right width direction of the left and right extension sections is an arc bulge with the front and back ends gradually becoming larger toward the middle width. The widths of the upper extension section, the lower extension section and the left extension section in the extension direction are in arc transition, so that the fluidity is ensured.
Preferably, the vertical extension has a uniform thickness in the front-rear direction, and the vertical extension has a uniform thickness in the front-rear direction.
As another preferable scheme, the thickness of the upper and lower extension sections gradually decreases from the front end and the rear end to the middle, the thickness of the left and right extension sections gradually decreases from the front end and the rear end to the middle, and the sectional area of a flow passage at each part of the mixing pipe is unchanged. The flow area of the flow channel is always unchanged, the flow velocity of the colloid is stable, and the colloid is continuously stretched up and down and left and right in the stable flow and fully mixed.
Preferably, the upper and lower extension sections and the left and right extension sections are in a rotationally symmetrical structure rotated 90 degrees along the axis of the mixing tube.
Preferably, the first feeder and the second feeder have the same structure, the first feeder comprises a sizing cylinder, the two sides of the sizing cylinder are symmetrically provided with upright posts, the tops of the two upright posts are provided with main lifting rods which lift up and down, a top surface bracket is arranged between the tops of the two main lifting rods, the upper surface of the top surface bracket is provided with a rotatable screw driver, the screw driver is provided with an auxiliary lifting screw, the bottom end of the auxiliary lifting screw is provided with a pressing plate which is inserted into the sizing cylinder and sealed with the inner wall of the sizing cylinder, and the pressing plate is provided with a feeding hole which is communicated with the upper surface and the lower surface. The first feeder and the second feeder adopt an extrusion mode to discharge upwards, the discharge amount is controllable, and the influence of the gravity flow of the sizing material caused by the downward discharge mode on the discharge amount control is avoided.
The colloid of the invention is continuously stretched up and down and left and right in the mixing tube and is fully mixed; the flow channel of the mixing pipe is free from arranging any guide plates, blades and the like, so that the flow channel is smooth, the mixing pipe is processed and shaped only by external processing, any structure is not required to be added in the mixing pipe, and the processing cost is low.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic view of a structure of the present invention.
Fig. 2 is a schematic view of the first loader according to the present invention.
FIG. 3 is a side view and top view of a first mixing tube configuration of the present invention.
FIG. 4 is a side view and top view of a second mixing tube configuration of the present invention.
FIG. 5 is a schematic diagram of the preparation process of the A colloid and the B colloid of the invention.
Illustration of: 1. the first feeder, 2, the second feeder, 3, the blender, 4, the glue injection molding device, 5, the stand column, 6, the main lifting rod, 7, the top surface bracket, 8, the glue cylinder, 9, the pressing plate, 10, the feed inlet, 11, the auxiliary lifting screw, 12, the screw driver, 13, the circular pipe section, 14, the upper and lower extending section, 15 and the left and right extending section.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
Example 1: an additive liquid silicone rubber mixing device for infant products is shown in figures 1-3. In the molding process of the addition type liquid silicone rubber product, a sizing material A and a sizing material B need to be prepared, and the sizing material A and the sizing material B are mixed and then subjected to glue injection molding. The preparation of the A sizing material and the B sizing material is shown in figure 5, after the vinyl silicone oil, the white carbon black and the auxiliary agent are kneaded by a kneader, the mixture is ground by a three-roll mill, then dispersed by a planetary stirrer, a platinum catalyst and an inhibitor are added in the dispersing process, and finally the A sizing material is obtained by press filtration by a rubber filter; and (3) kneading the vinyl silicone oil, the white carbon black and the auxiliary agent by a kneader, grinding by a three-roll machine, dispersing by a planetary stirrer, adding hydrogen-containing silicone oil in the dispersing process, and finally press-filtering by a rubber filter to obtain the rubber B.
The device comprises a first feeder 1 and a second feeder 2, wherein the first feeder 1 is internally provided with an A colloid, and the second feeder 2 is internally provided with a B colloid. The discharging pipes of the first feeder and the second feeder are connected with the mixer 3, and the outlet of the mixer is connected with the glue injection molding device 4. The first feeder 1 and the second feeder 2 have the same structure, as shown in fig. 2, the first feeder comprises a sizing cylinder 8, two sides of the sizing cylinder are symmetrically provided with upright posts 5, the tops of the two upright posts are provided with main lifting rods 6 which lift up and down, a top surface bracket 7 is arranged between the tops of the two main lifting rods, the upper surface of the top surface bracket is provided with a rotatable screw driver 12, the screw driver is provided with an auxiliary lifting screw 11, the bottom end of the auxiliary lifting screw is provided with a pressing plate 9 which is inserted into the sizing cylinder 8 and is sealed with the inner wall of the sizing cylinder, and the pressing plate is provided with a feeding opening 10 which is communicated with the upper surface and the lower surface. The A colloid extruded and output from the feeding hole 10 is conveyed into the mixer from bottom to top, so that the quantitative control of feeding is ensured.
As shown in fig. 3, a mixing tube is disposed in the mixer 3, two ends of the mixing tube are respectively provided with a circular tube section 13, an up-down extending section 14 and a left-right extending section 15 are alternately disposed between the circular tube sections at two ends, the up-down width of the up-down extending section is greater than that of the circular tube section, the left-right thickness of the up-down extending section is less than that of the circular tube section, and the left-right width of the left-right extending section is greater than that of the circular tube section, and the up-down thickness of the left-right extending section is less than that of the circular tube section. The flow direction of the sizing material in the mixing pipe is taken as front and back, the upper and lower width direction of the upper and lower extension sections 14 is an arc bulge with the front and back ends gradually becoming larger toward the middle width, and the left and right width direction of the left and right extension sections 15 is an arc bulge with the front and back ends gradually becoming larger toward the middle width. The thickness of the upper and lower extension sections is consistent in the front-rear direction, and the thickness of the left and right extension sections is consistent in the front-rear direction.
In the scheme, the colloid is continuously stretched up and down and left and right in the mixing tube and fully mixed; the flow channel of the mixing pipe is free from arranging any guide plates, blades and the like, so that the flow channel is smooth, the mixing pipe is processed and shaped only by external processing, any structure is not required to be added in the mixing pipe, and the processing cost is low.
Example 2: an additive liquid silicone rubber mixing device for infant products is shown in figures 1, 2 and 4. In the molding process of the addition type liquid silicone rubber product, a sizing material A and a sizing material B need to be prepared, and the sizing material A and the sizing material B are mixed and then subjected to glue injection molding. The preparation of the A sizing material and the B sizing material is shown in figure 5, after the vinyl silicone oil, the white carbon black and the auxiliary agent are kneaded by a kneader, the mixture is ground by a three-roll mill, then dispersed by a planetary stirrer, a platinum catalyst and an inhibitor are added in the dispersing process, and finally the A sizing material is obtained by press filtration by a rubber filter; and (3) kneading the vinyl silicone oil, the white carbon black and the auxiliary agent by a kneader, grinding by a three-roll machine, dispersing by a planetary stirrer, adding hydrogen-containing silicone oil in the dispersing process, and finally press-filtering by a rubber filter to obtain the rubber B.
The device comprises a first feeder 1 and a second feeder 2, wherein the first feeder 1 is internally provided with an A colloid, and the second feeder 2 is internally provided with a B colloid. The discharging pipes of the first feeder and the second feeder are connected with the mixer 3, and the outlet of the mixer is connected with the glue injection molding device 4. The first feeder 1 and the second feeder 2 have the same structure, as shown in fig. 2, the first feeder comprises a sizing cylinder 8, two sides of the sizing cylinder are symmetrically provided with upright posts 5, the tops of the two upright posts are provided with main lifting rods 6 which lift up and down, a top surface bracket 7 is arranged between the tops of the two main lifting rods, the upper surface of the top surface bracket is provided with a rotatable screw driver 12, the screw driver is provided with an auxiliary lifting screw 11, the bottom end of the auxiliary lifting screw is provided with a pressing plate 9 which is inserted into the sizing cylinder 8 and is sealed with the inner wall of the sizing cylinder, and the pressing plate is provided with a feeding opening 10 which is communicated with the upper surface and the lower surface. The A colloid extruded and output from the feeding hole 10 is conveyed into the mixer from bottom to top, so that the quantitative control of feeding is ensured.
As shown in fig. 4, a mixing tube is disposed in the mixer 3, two ends of the mixing tube are respectively provided with a circular tube section 13, an up-down extending section 14 and a left-right extending section 15 are alternately disposed between the circular tube sections at two ends, the up-down width of the up-down extending section is greater than that of the circular tube section, the left-right thickness of the up-down extending section is less than that of the circular tube section, and the left-right width of the left-right extending section is greater than that of the circular tube section, and the up-down thickness of the left-right extending section is less than that of the circular tube section. The flow direction of the sizing material in the mixing pipe is taken as front and back, the upper and lower width direction of the upper and lower extension sections 14 is an arc bulge with the front and back ends gradually becoming larger toward the middle width, and the left and right width direction of the left and right extension sections 15 is an arc bulge with the front and back ends gradually becoming larger toward the middle width. The thickness of the upper and lower extension sections 14 gradually decreases from the front end and the rear end to the middle, the thickness of the left and right extension sections 15 gradually decreases from the front end and the rear end to the middle, and the sectional area of the flow passage of each part of the mixing pipe is unchanged.
In the scheme, the colloid is continuously stretched up and down and left and right in the mixing tube, fully mixed and the flow rate is kept stable; the flow channel of the mixing pipe is free from arranging any guide plates, blades and the like, so that the flow channel is smooth, the mixing pipe is processed and shaped only by external processing, any structure is not required to be added in the mixing pipe, and the processing cost is low.
Claims (3)
1. The utility model provides an addition type liquid silicone rubber compounding device for infant articles for use, includes first material loading ware and second material loading ware, and the blendor is connected to the discharging pipe of first material loading ware and second material loading ware, and the injecting glue forming device, its characterized in that are connected to the blender export: the mixer is internally provided with a mixing pipe, two ends of the mixing pipe are respectively provided with a circular pipe section, an upper extending section, a lower extending section and a left extending section are alternately arranged between the circular pipe sections at the two ends, the upper width and the lower width of the upper extending section and the lower width of the lower extending section are larger than the circular pipe sections, the left thickness and the right thickness of the upper extending section and the lower width of the lower extending section are smaller than the circular pipe sections, and the left width and the right width of the left extending section and the right width of the lower extending section are larger than the circular pipe sections, and the upper thickness and the lower thickness of the lower extending section are smaller than the circular pipe sections; the method comprises the steps that the flowing direction of sizing materials in a mixing pipe is taken as the front and the back, the upper and the lower width directions of an upper extending section and a lower extending section are arc-shaped bulges with the front and the back ends gradually becoming larger towards the middle width, and the left and the right width directions of a left extending section and a right extending section are arc-shaped bulges with the front and the back ends gradually becoming larger towards the middle width; the thickness of the upper and lower extension sections gradually decreases from the front end and the rear end to the middle, the thickness of the left and right extension sections gradually decreases from the front end and the rear end to the middle, and the sectional area of a flow passage at each part of the mixing pipe is unchanged; the first feeder and the second feeder are discharged upwards in an extrusion mode.
2. An additive liquid silicone rubber mixing device for infant products according to claim 1, wherein: the upper and lower extension sections and the left and right extension sections are of a rotationally symmetrical structure which rotates 90 degrees along the axial direction of the mixing tube.
3. An additive liquid silicone rubber mixing device for infant products according to claim 1, wherein: the structure of first glassware and second glassware is the same, and first glassware includes the sizing material section of thick bamboo, sizing material section of thick bamboo bilateral symmetry sets up the stand, and two stand tops are equipped with the main lifter of oscilaltion, are equipped with the top surface support between two main lifter tops, and top surface support upper surface is equipped with rotatable screw driver, and screw driver is equipped with assists the lifting screw, and the bottom of assisting the lifting screw is equipped with inserts sizing material section of thick bamboo, periphery and sizing material section of thick bamboo inner wall sealed clamp plate, is equipped with the feed inlet of upper and lower surface of intercommunication on the clamp plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910040770.1A CN109531851B (en) | 2019-01-16 | 2019-01-16 | Addition type liquid silicone rubber mixing device for infant products |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910040770.1A CN109531851B (en) | 2019-01-16 | 2019-01-16 | Addition type liquid silicone rubber mixing device for infant products |
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| CN109531851A CN109531851A (en) | 2019-03-29 |
| CN109531851B true CN109531851B (en) | 2023-08-01 |
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| CN201910040770.1A Active CN109531851B (en) | 2019-01-16 | 2019-01-16 | Addition type liquid silicone rubber mixing device for infant products |
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2019
- 2019-01-16 CN CN201910040770.1A patent/CN109531851B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2272284A1 (en) * | 1974-12-09 | 1975-12-19 | Vortex Sa | Flow trajectory appts. for mixing of liquids, etc. - has pairs of vortex flow chambers arranged symmetrically on either side of the main flow axis |
| EP1566211A1 (en) * | 2004-02-23 | 2005-08-24 | HILTI Aktiengesellschaft | Static mixer and use thereof |
| CN101678293A (en) * | 2007-05-15 | 2010-03-24 | 康宁股份有限公司 | Microfluidic self-sustaining oscillating mixers and devices and methods utilizing same |
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| JP2011026364A (en) * | 2009-07-21 | 2011-02-10 | Kodaira Seisakusho Co Ltd | Apparatus and method for kneading polymeric composition |
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