Online mixing and tinting device and method for silicone sealant finished products

Abstract

The application discloses a silicone sealant finished product online mixing and toning device and a mixing and toning method. The mixing and toning device comprises a conveying pipe, two piston chambers and two groups of color paste tanks. The conveying pipe is sequentially divided into a paste adding section and a stirring section. Each group of color paste tanks comprises a plurality of color paste tanks. All the color paste tanks in the same group of color paste tanks are respectively connected with corresponding piston chambers through a plurality of discharge pipes. The piston chambers are respectively connected with the inside of the paste adding section through a plurality of paste adding pipes. One-way valves are respectively arranged in the discharge pipes and the paste adding pipes. Control valves are arranged on the discharge pipes. Pistons are respectively arranged in the piston chambers. The pistons in the two piston chambers are alternately moved. A rotating shaft is arranged in the stirring section. Helical blades are arranged on the rotating shaft. The silicone sealant finished product can be mixed and toned online on a continuous silicone sealant production line. The silicone sealant is prevented from being exposed to air during secondary transfer. The production efficiency of the silicone sealant is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of silicone sealant production equipment, and particularly relates to an online mixing and toning device for silicone sealant finished products and a mixing and toning method. BACKGROUND

[0002] The silicone sealant is a paste-like substance formed by mixing polydimethylsiloxane as a main raw material, a cross-linking agent, a filler, a plasticizer, a coupling agent and a catalyst in a vacuum state, and is cured to form an elastic silicone rubber by reacting with water in the air at room temperature. After the silicone sealant is produced into a finished product in a reaction kettle, the silicone sealant needs to be mixed with color paste to form various colors, so as to be packaged into a final product. The mixing and toning process of the silicone sealant is generally carried out in a stirrer, and the stirrer can uniformly mix the color paste and the glue. After the mixing and toning is completed, the stirrer is emptied, and new silicone sealant is filled in for mixing and toning. This repeated alternating process is easy to cause the silicone sealant to contact moisture in the air, so that part of the silicone sealant is solidified, and finally there is a certain amount of solidified silicone sealant in the silicone sealant finished product, which affects the quality of the product. SUMMARY

[0003] To solve the above technical problems, the technical scheme adopted by the present application is: an online mixing and toning device for silicone sealant finished products, comprising a conveying pipe, two piston chambers and two groups of color paste tanks, the conveying pipe is sequentially divided into a paste adding section and a stirring section, each group of color paste tanks is composed of a plurality of color paste tanks respectively containing color paste of different colors, one piston chamber corresponds to one group of color paste tanks, all the color paste tanks in the same group of color paste tanks are respectively connected to the corresponding piston chamber through a discharge pipe, the piston chambers are respectively connected to the inside of the paste adding section through a plurality of paste adding pipes, one-way valves are respectively installed in the discharge pipes and the paste adding pipes, a control valve is installed on the discharge pipe, pistons are respectively arranged in the piston chambers, the pistons are respectively driven by cylinders to move in the piston chambers, the pistons in the two piston chambers move alternately, a rotating shaft is arranged in the stirring section, helical blades are arranged on the rotating shaft, and the rotating shaft is driven to rotate by a driving mechanism located outside the conveying pipe.

[0004] As a preferred technical scheme of the above technical scheme, a cylinder sleeve is sleeved on the outside of the paste adding section, one end of the cylinder sleeve is sealingly connected to the periphery of the conveying pipe through an annular plate, two partition plates are connected between the cylinder sleeve and the conveying pipe, and the cylinder sleeve is divided into two piston chambers by the two partition plates.

[0005] As a preferred technical scheme of the above technical scheme, the paste adding pipes are located inside the paste adding section, one end of each paste adding pipe is fixedly connected to the inner wall of the conveying pipe, the other end of each paste adding pipe points to the axis of the conveying pipe, a plurality of small holes are arranged on the outer wall of the conveying pipe, the small holes correspond one-to-one to the paste adding pipes, and the small holes are respectively connected to the corresponding paste adding pipes.

[0006] As the preferred technical scheme of the above, the number of the dosing pipes is multiple, and the dosing pipes are respectively directed towards the axis of the conveying pipe from different angle directions.

[0007] As the preferred technical scheme of the above, one end of the dosing pipe is fixedly connected with the bottom of the color paste tank, and the other end is connected with the annular plate.

[0008] As the preferred technical scheme of the above, the driving mechanism comprises a motor and a bevel gear structure, the bevel gear structure comprises a first bevel gear fixedly connected with the driving shaft of the motor and a second bevel gear fixedly connected with the rotating shaft, both ends of the rotating shaft are provided with support frames, the support frames are fixedly connected with the inner wall of the conveying pipe, and both ends of the rotating shaft are rotatably connected with the support frames.

[0009] As the preferred technical scheme of the above, the conveying pipe is connected with a conical pipe, the conical pipe comprises a large-diameter end and a small-diameter end, the large-diameter end is connected with the conveying pipe through a horn plate, a rotating extrusion block is arranged inside the large-diameter end, an extrusion channel is formed between the rotating extrusion block and the inner wall of the conical pipe, and the rotating extrusion block is fixedly connected with the rotating shaft.

[0010] As the preferred technical scheme of the above, one end of the extrusion block close to the rotating shaft is provided with a guide groove with an arc-shaped cross section, the rotating shaft is connected with the bottom of the groove, an inverse channel is formed between the guide groove and the horn plate, and the inverse channel is communicated with the extrusion channel.

[0011] The silicone sealant product online mixing and toning method uses the silicone sealant product online mixing and toning device, and the mixing and toning method comprises the following steps: the color paste is divided into two parts and alternately injected into the uniformly flowing silicone sealant, the rotating shaft with a spiral blade is used to control the flow rate of the silicone sealant and form stirring of the silicone sealant and the color paste, and finally the silicone sealant and the color paste are quickly and uniformly mixed through extrusion in different directions, so that the silicone sealant product online mixing and toning is completed.

[0012] The silicone sealant product online mixing and toning device and the mixing and toning method can realize online mixing and toning of the silicone sealant product on the continuous production line of the silicone sealant, avoid secondary transfer of the silicone sealant to expose the silicone sealant in the air, and ensure the quality of the silicone sealant product. The silicone sealant and the color paste are quickly and uniformly mixed through extrusion conveying, and the production efficiency of the silicone sealant is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a structural schematic diagram of the present application;

[0014] Fig. 2 is a cross-sectional structural schematic diagram of the present application. DETAILED DESCRIPTION

[0015] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0016] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0018] As Figs. 1-2As shown, the silicone sealant product online mixing color device, including a conveying pipe 1, two piston chambers 2 and two groups of color paste tanks 3, the conveying pipe 1 is divided into slurry section 4, stirring section 5 in turn, each group of color paste tanks 3 is composed of several color paste tanks 3 respectively filled with different color color paste, a piston chamber 2 and a group of color paste tanks 3 correspond, all color paste tanks 3 in the same group of color paste tanks 3 are connected to the corresponding piston chamber 2 through the discharge pipe 6 respectively, the piston chamber 2 is connected to the inside of the slurry section 4 through several slurry pipes 7 respectively, the discharge pipe 6 and the slurry pipe 7 are respectively provided with a one-way valve, the control valve is installed on the discharge pipe 6, the piston chamber 2 is respectively provided with a piston 8, the piston 8 is driven by the cylinder 9 to move in the piston chamber 2, the pistons 8 in the two piston chambers 2 move alternately, the stirring section 5 is provided with a rotating shaft 10, the rotating shaft 10 is provided with a spiral blade 11, the rotating shaft 10 is driven to rotate by the driving mechanism located outside the conveying pipe 1. The control valve of the discharge pipe 6 corresponding to one color paste tank 3 of one group of color paste tanks 3 is opened, the control valve of the discharge pipe 6 corresponding to one color paste tank 3 of another group of color paste tanks 3 is opened, the color paste in the two color paste tanks 3 is the same color. The piston 8 in one piston chamber 2 rises, so that a negative pressure is formed in the piston chamber 2, so that the color paste in the corresponding color paste tank 3 is extracted into the piston chamber 2 through the discharge pipe 6, then the piston chamber 2 descends, the color paste in the piston chamber 2 is pressed into the slurry section 4 of the conveying pipe 1, and is mixed with the silicone sealant in the slurry section 4. At the same time, the piston 8 in the other piston chamber 2 rises, and the color paste of the same color is extracted into the piston chamber 2. When the piston 8 in the first piston chamber 2 starts to rise again, the piston 8 in the second piston chamber 2 descends. By controlling the core layer and the movement frequency of the piston 8, and matching the flow of the silicone sealant in the conveying pipe 1, the color paste is uniformly mixed into the silicone sealant, so that the silicone sealant product is continuously mixed and colored online. The rotating shaft 10 in the stirring section 5 keeps rotating, the spiral blade 11 on the rotating shaft 10 forms a conveying effect on the silicone sealant, and simultaneously stirs the silicone sealant and the color paste, so that the silicone sealant and the color paste are fully mixed. When it is necessary to change the color of the color paste, only the corresponding control valve needs to be controlled to be opened. Different color color pastes can also be mixed into the silicone sealant at the same time.

[0019] Further, the slurry section 4 is sleeved with a cylinder sleeve 12, one end of the cylinder sleeve 12 is sealingly connected with the periphery of the conveying pipe 1 through an annular plate 13, two partition plates 14 are connected between the cylinder sleeve 12 and the conveying pipe 1, the cylinder sleeve 12 is divided into two independent piston chambers 2 by the two partition plates 14.

[0020] Further, the slurry pipe 7 is located inside the slurry section 4, one end of the slurry pipe 7 is fixedly connected to the inner wall of the conveying pipe 1, the other end points to the axis of the conveying pipe 1, a plurality of small holes are arranged on the outer wall of the conveying pipe 1, the small holes correspond to the slurry pipes 7 one by one, and the small holes are respectively connected to the corresponding slurry pipes 7. When the piston 8 is pressed down in the piston chamber 2, the color paste in the piston chamber 2 enters the slurry pipe 7 through the small hole and enters the inside of the silicone sealant through the slurry pipe 7.

[0021] Further, the number of the slurry pipes 7 is multiple, and the slurry pipes 7 are respectively directed to the axis of the conveying pipe 1 from different angle directions. The slurry pipe 7 adds the color paste into the silicone sealant in the conveying pipe 1. The slurry pipe 7 extends into the inside of the silicone sealant, and since the silicone sealant is in a flowing state, the slurry pipe 7 can play a stirring role relatively, so that the color paste can extend into the inside of the silicone sealant as soon as it contacts the silicone sealant. The slurry pipes 7 are preferably staggered, so that the slurry pipes 7 can repeatedly stir the silicone sealant in the flowing direction of the silicone sealant, so that the silicone sealant is repeatedly broken, bifurcated, recombined and gathered, the mixing efficiency of the color paste and the silicone sealant is improved, and the uniform mixing of the color paste and the silicone sealant is accelerated.

[0022] Further, one end of the discharging pipe 6 is fixedly connected to the bottom of the color paste tank 3, and the other end is connected to the annular plate 13. The discharging pipe 6 draws the color paste from the bottom of the color paste tank 3, and uses the negative pressure in the piston chamber 2 to transport the color paste to the piston chamber 2.

[0023] Further, the driving mechanism includes a motor 14 and a bevel gear structure, the bevel gear structure includes a first bevel gear 15 fixedly connected to the driving shaft of the motor 14 and a second bevel gear 16 fixedly connected to the rotating shaft 10, both ends of the rotating shaft 10 are provided with support frames 17, the support frames 17 are fixedly connected to the inner wall of the conveying pipe 1, and both ends of the rotating shaft 10 are rotatably connected to the support frames 17.

[0024] Further, the conveying pipe 1 is connected with a conical pipe 18, the conical pipe 18 includes a large-diameter end 19 and a small-diameter end 20, the large-diameter end 19 is connected to the conveying pipe 1 through a horn plate 21, a rotating extrusion block 22 is arranged inside the large-diameter end 19, an extrusion channel 23 is formed between the rotating extrusion block 22 and the inner wall of the conical pipe 18 around the rotating extrusion block 22, and the rotating extrusion block 22 is fixedly connected to the rotating shaft 10. The rotating extrusion block 22 rotates with the rotating shaft 10, extrudes and stirs the silicone sealant moving at the conical pipe 18, so that the color paste is fully mixed and uniform in the silicone sealant.

[0025] Further, the extrusion block 22 is provided with a guide groove 24 with arc-shaped cross section near one end of the rotating shaft 10, the rotating shaft 10 is connected to the bottom of the groove 24, the guide groove 24 and the horn plate 24 form a reverse channel 25, the reverse channel 25 is communicated with the extrusion channel 23. By the rotating extrusion of the rotating block 22, the silicone sealant mixed with the color paste flows reversely through the reverse channel 25 and then enters the extrusion channel 23, and finally is discharged from the small-diameter end 20 to be packed in barrels. The color paste and the silicone sealant are fully extruded and mixed in the reverse channel 25 and the extrusion channel 23, and the mixing uniformity of the mixed silicone sealant and the color paste is improved.

[0026] It is worth mentioning that the technical features of the cylinder, motor and the like involved in the present patent application should be regarded as prior art, and the specific structure, working principle and possible control mode and spatial arrangement mode of these technical features can be selected by using the conventional selection in the art, and should not be regarded as the invention point of the present patent, and the present patent will not be further specifically expanded and described.

[0027] The preferred embodiments of the present application are described in detail above, it should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the present application, therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the present application should be within the protection scope determined by the claims.

Claims

1. An on-line mixing and tinting device for silicone sealant finished products, characterized in that, The device comprises a conveying pipe, two piston chambers and two groups of color paste tanks, the conveying pipe is divided into a color paste adding section and a stirring section in sequence, each group of color paste tanks is composed of several color paste tanks filled with color paste of different colors, one piston chamber corresponds to one group of color paste tanks, all the color paste tanks in the same group of color paste tanks are connected to the corresponding piston chamber through a discharging pipe, the piston chambers are connected to the inside of the color paste adding section through several color paste adding pipes, one-way valves are respectively installed in the discharging pipes and the color paste adding pipes, a control valve is installed on the discharging pipe, pistons are respectively arranged in the piston chambers, the pistons are driven by cylinders to move in the piston chambers, the pistons in the two piston chambers move alternately, a rotating shaft is arranged in the stirring section, helical blades are arranged on the rotating shaft, the rotating shaft is driven to rotate by a driving mechanism arranged outside the conveying pipe, the conveying pipe is connected with a conical pipe, the conical pipe comprises a large-diameter end and a small-diameter end, the large-diameter end is connected to the conveying pipe through a horn plate, a rotating extrusion block is arranged in the inside of the large-diameter end, an extrusion channel is formed between the rotating extrusion block and the inner wall of the conical pipe, the rotating extrusion block is fixedly connected to the rotating shaft, a guide groove with an arc-shaped cross section is arranged on one end of the extrusion block close to the rotating shaft, the rotating shaft is connected to the bottom of the guide groove, a reverse channel is formed between the guide groove and the horn plate, the reverse channel is connected to the extrusion channel, a cylinder sleeve is arranged outside the color paste adding section, one end of the cylinder sleeve is sealingly connected to the periphery of the conveying pipe through a ring plate, two partition plates are arranged between the cylinder sleeve and the conveying pipe, the inside of the cylinder sleeve is divided into two piston chambers by the two partition plates.

2. The silicone sealant finished product online tinting device of claim 1, wherein, The color paste adding pipes are arranged in the inside of the color paste adding section, one end of each color paste adding pipe is fixedly connected to the inner wall of the conveying pipe, the other end of each color paste adding pipe points to the axis of the conveying pipe, a plurality of holes are arranged on the outer wall of the conveying pipe, each hole corresponds to one color paste adding pipe, and each hole is connected to the corresponding color paste adding pipe.

3. The silicone sealant finished product on-line tinting device of claim 2, wherein, The number of the color paste adding pipes is plural, and each color paste adding pipe is directed to the axis of the conveying pipe from different angle directions.

4. The silicone sealant finished product on-line tinting device of claim 1, wherein, One end of the discharging pipe is fixedly connected to the bottom of the color paste tank, and the other end of the discharging pipe is connected to the ring plate.

5. The silicone sealant finished product on-line tinting device of claim 1, wherein, The driving mechanism comprises a motor and a bevel gear structure, the bevel gear structure comprises a first bevel gear fixedly connected to the driving shaft of the motor and a second bevel gear fixedly connected to the rotating shaft, both ends of the rotating shaft are provided with support frames, the support frames are fixedly connected to the inner wall of the conveying pipe, and both ends of the rotating shaft are rotatably connected to the support frames.

6. Method for the on-line tinting of silicone sealant finished products, characterized in that, The mixing and toning method comprises the following steps: the color paste is divided into two parts and is alternately injected into the silicone sealant flowing at a constant speed, the rotating shaft with the helical blades is used to control the flow rate of the silicone sealant and to stir the silicone sealant and the color paste, finally, the silicone sealant and the color paste are quickly and uniformly mixed through extrusion in different directions, and the online mixing and toning of the silicone sealant product is completed.

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