Silicone rubber mixing equipment

Abstract

The utility model relates to the technical field of silicon rubber mixing, in particular to silicon rubber mixing equipment, and aims to solve the technical problems that in the prior art, when silicon rubber is mixed, powder such as filler or auxiliaries for silicon rubber mixing is mostly directly put into the silicon rubber, the powder cannot be uniformly scattered on the silicon rubber, and the silicon rubber mixing efficiency is high. The silicon rubber mixing device comprises a base, and the top of the base is fixedly connected with a bearing cylinder which is obliquely arranged. Powder in a powder bin is received through a material scattering bin in a material scattering mechanism, a mixing barrel and a spiral conveying piece rotate to turn over silicone rubber in the mixing barrel, and the material scattering mechanism evenly scatters the powder on the silicone rubber in the mixing barrel along with rotation of the mixing barrel and gradually moves to scatter the powder on the silicone rubber along with rotation of the mixing barrel. Therefore, the mixing effect of the silicone rubber and the powder is improved, the mixing time is shortened, and the mixing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of silicone rubber mixing, and more specifically, to a silicone rubber mixing device. Background Art

[0002] Silicone rubber is a synthetic rubber based on siloxane and is widely used in multiple industries such as automotive, electronics, medical, and food due to its excellent high-temperature resistance, low-temperature resistance, chemical corrosion resistance, and electrical insulation properties. During the production process, silicone rubber usually exists in a liquid form for easy mixing and processing. The raw materials in this state can be cross-linked by heating or adding catalysts, and certain fillers (such as silica) and additives exist in powder form for easy mixing with silicone rubber.

[0003] However, in the prior art, when mixing silicone rubber, the powder materials used for mixing silicone rubber such as fillers or additives are mostly directly put into the silicone rubber, and the powder cannot be evenly spread on the silicone rubber, thus affecting the mixing effect of the silicone rubber. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, adapt to the actual needs, and provide a silicone rubber mixing device to solve the technical problem that in the prior art, when mixing silicone rubber, the powder materials used for mixing silicone rubber such as fillers or additives are mostly directly put into the silicone rubber, and the powder cannot be evenly spread on the silicone rubber, thus affecting the mixing effect of the silicone rubber.

[0005] To solve the above technical problems, the utility model provides the following technical solution: A silicone rubber mixing device includes a base, a slantingly arranged bearing cylinder is fixedly connected to the top of the base, a mixing cylinder is rotatably connected to the inner wall of the bearing cylinder, a spiral conveyor blade for mixing silicone rubber is fixedly connected to the inner wall of the mixing cylinder, a feed bin door and a discharge bin door are respectively arranged at both ends of the bearing cylinder, a powder bin is fixedly connected to the end of the bearing cylinder, the bottom of the powder bin penetrates through the end of the bearing cylinder to its interior, and a blanking port is opened at the bottom of the powder bin. A motor is fixedly connected to the outer wall of the base, a transmission groove is opened on the outer wall of the bearing cylinder, a transmission disk is fixedly connected to the main shaft of the motor, the outer wall of the transmission disk passes through the transmission groove and abuts against the outer wall of the mixing cylinder, and a feeding mechanism for evenly spreading powder into the mixing cylinder is arranged inside the mixing cylinder;

[0006] The material spreading mechanism includes a transmission column rotatably connected to the inner end wall of the bearing cylinder. The other end of the transmission column is fixedly connected with a reciprocating lead screw. The inner end wall of the bearing cylinder is fixedly connected with symmetrically arranged guide plates. A material spreading bin is arranged between the guide plates. A material spreading opening is formed at the bottom of the material spreading bin. Both sides of the material spreading bin are fixedly connected with stop bars, and the bottoms of the stop bars are respectively abutted against the tops of the guide plates. A slider is sleeved on the outer wall of the reciprocating lead screw, and the slider is threadedly connected with the reciprocating lead screw. The other end of the slider is hinged to the top of the material spreading bin. The material spreading bin in the material spreading mechanism catches the powder in the powder bin. The mixing cylinder and the spiral conveying blades rotate to turn the silicone rubber in the mixing cylinder. The material spreading mechanism rotates with the mixing cylinder and evenly spreads the powder onto the silicone rubber in the mixing cylinder. Moreover, it gradually moves towards the silicone rubber to spread the powder as the mixing cylinder rotates, thereby increasing the mixing effect of the silicone rubber and the powder, reducing the mixing time required, and increasing the mixing efficiency.

[0007] Preferably, the tops of the guide plates are both of a wavy structure, and the convex and concave parts of the wavy structure of the guide plates both guide the movement of the stop bars. The guide plates are used to support and guide the movement of the material spreading bin in the material spreading structure. When the material spreading bin moves, the convex and concave parts of its wavy structure will guide the stop bars fixedly connected to the outer wall of the material spreading bin, so that the stop bars start to drive the material spreading bin to twist and vibrate during the movement, thereby preventing the powder from clogging in the material spreading bin and being unable to be evenly spread onto the silicone rubber.

[0008] Preferably, a transmission ring is fixedly connected to the inner wall of the mixing cylinder. The outer wall of the transmission ring is abutted against the outer wall of the transmission column. The inner end wall of the bearing cylinder is fixedly connected with a sealing ring that wraps the lower side of the transmission ring. The transmission ring drives the transmission column to rotate. In order to prevent the silicone rubber inside the mixing cylinder from adhering to the transmission ring and affecting the abutting transmission between the transmission ring and the transmission column, the sealing ring is used to cover the transmission ring, thereby preventing the silicone rubber from adhering to the transmission ring.

[0009] Preferably, a sealing plate that covers and seals the feeding opening is slidably connected to the bottom of the powder bin. The end of the sealing plate is fixedly connected with a spring, and the other end of the spring is fixedly connected with the inner wall of the end of the bearing cylinder. When the material spreading bin moves, its end can push the end of the sealing plate. The feeding opening is sealed by the provided sealing plate. When the material spreading bin moves to the bottom of the feeding opening and pushes the sealing plate, the feeding opening is opened, so that the powder in the powder bin can only enter the material spreading bin, thereby preventing the powder in the powder bin from leaking into the mixing cylinder through the feeding opening and affecting the uniformity of the mixing of the silicone rubber and the powder.

[0010] Preferably, both sides of the bottom of the shift lever gradually extend in an arc shape towards the middle, and the bottom of the shift lever forms a semi-cylindrical structure after extension; the semi-cylindrical structure formed at the bottom of the shift lever can guide when it contacts the top of the guide plate, thereby preventing the shift lever from getting stuck at the corrugated structure of the guide plate.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. By arranging a base, a bearing cylinder, a mixing cylinder, a spiral conveying sheet, a feed bin door, a discharge bin door, a powder bin, a feeding port, a motor, a transmission groove, a transmission disc and a material spreading mechanism, the material spreading mechanism catches the powder in the powder bin through the material spreading bin. The mixing cylinder and the spiral conveying sheet rotate to turn the silicone rubber in the mixing cylinder, and the material spreading mechanism rotates with the mixing cylinder and evenly spreads the powder onto the silicone rubber in the mixing cylinder. Moreover, it gradually moves along with the rotation of the mixing cylinder to spread the powder onto the silicone rubber, thereby increasing the mixing effect of the silicone rubber and the powder, reducing the mixing time required, and increasing the mixing efficiency.

[0013] 2. In the present utility model, the guide plate is used to support and guide the movement of the material spreading bin in the material spreading structure. When the material spreading bin moves, the convex and concave parts of the corrugated structure of the guide plate will guide the shift lever fixedly connected to the outer wall of the material spreading bin, so that the shift lever starts to drive the material spreading bin to twist and generate vibrations during the movement, thereby preventing the powder from clogging in the material spreading bin and being unable to be evenly spread onto the silicone rubber.

[0014] 3. In the present utility model, the mixing cylinder is rotatably connected to the inner wall of the bearing cylinder, and the bearing cylinder is inclinedly arranged on the top of the base. Therefore, the mixing cylinder is also inclined. When the inclined mixing cylinder drives the internal spiral conveying sheet to rotate, the spiral conveying sheet will turn the silicone rubber inside the mixing cylinder in one direction, and the turned silicone rubber will flow towards the other end under its own fluidity. In this way, when mixing the silicone rubber, a circulating turning effect is achieved on the silicone rubber, thereby increasing the mixing effect on the silicone rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a cross-sectional view of the bearing cylinder in the present utility model;

[0017] Figure 3 is a cross-sectional view of the mixing cylinder in the present utility model;

[0018] Figure 4 is a cross-sectional view of the powder bin in the present utility model;

[0019] Figure 5 is Figure 4Partial enlarged view of part A in

[0020] Figure 6 Structural schematic diagram of the material spreading bin in the present utility model;

[0021] Figure 7 Structural schematic diagram of the guide plate in the present utility model.

[0022] Description of the reference numerals in the figure:

[0023] 1. Base; 2. Bearing cylinder; 3. Mixing cylinder; 4. Screw conveyor blade; 5. Feed bin door; 6. Discharge bin door; 7. Powder bin; 8. Feeding port; 9. Motor; 10. Transmission groove; 11. Transmission disk; 12. Transmission column; 13. Reciprocating lead screw; 14. Guide plate; 15. Material spreading bin; 16. Material spreading port; 17. Stop bar; 18. Slide block; 19. Transmission ring; 20. Sealing ring; 21. Sealing plate; 22. Spring. Specific implementation mode

[0024] As Figures 1 to 7 shown, the present utility model relates to: a silicone rubber mixing device, including a base 1, a bearing cylinder 2 inclined and fixedly connected to the top of the base 1, a mixing cylinder 3 rotatably connected to the inner wall of the bearing cylinder 2, a screw conveyor blade 4 for mixing silicone rubber fixedly connected to the inner wall of the mixing cylinder 3, a feed bin door 5 and a discharge bin door 6 respectively arranged at both ends of the bearing cylinder 2, a powder bin 7 fixedly connected to the end of the bearing cylinder 2, the bottom of the powder bin 7 penetrating through the end of the bearing cylinder 2 to its interior, and a feeding port 8 opened at the bottom of the powder bin 7, a motor 9 fixedly connected to the outer wall of the base 1, a transmission groove 10 opened on the outer wall of the bearing cylinder 2, a transmission disk 11 fixedly connected to the main shaft of the motor 9, the outer wall of the transmission disk 11 passing through the transmission groove 10 and abutting against the outer wall of the mixing cylinder 3, and a material spreading mechanism for evenly spreading powder into the mixing cylinder 3 arranged inside the mixing cylinder 3;

[0025] The material spreading mechanism includes a transmission column 12 rotatably connected to the inner end wall of the bearing cylinder 2. The other end of the transmission column 12 is fixedly connected with a reciprocating lead screw 13. The inner end wall of the bearing cylinder 2 is fixedly connected with symmetrically arranged guide plates 14. A material spreading bin 15 is arranged between the guide plates 14. A material spreading opening 16 is formed at the bottom of the material spreading bin 15. Both sides of the material spreading bin 15 are fixedly connected with retaining rods 17. The bottoms of the retaining rods 17 are respectively abutted against the tops of the guide plates 14. A slider 18 is sleeved on the outer wall of the reciprocating lead screw 13, and the slider 18 is threadedly connected with the reciprocating lead screw 13. The other end of the slider 18 is hinged to the top of the material spreading bin 15. The material spreading bin 15 in the material spreading mechanism catches the powder in the powder bin 7. The mixing cylinder 3 and the spiral conveying blades 4 rotate to stir the silicone rubber in the mixing cylinder 3. The material spreading mechanism rotates with the mixing cylinder 3 and evenly spreads the powder on the silicone rubber in the mixing cylinder 3, and gradually moves towards the silicone rubber to spread the powder as the mixing cylinder 3 rotates, thereby increasing the mixing effect of the silicone rubber and the powder, reducing the mixing time required, and increasing the mixing efficiency.

[0026] Further, the tops of the guide plates 14 are all in a wavy structure, and the convex and concave parts of the wavy structure of the guide plates 14 are used to guide the movement of the retaining rods 17. The guide plates 14 are used to support and guide the movement of the material spreading bin 15 in the material spreading structure. When the material spreading bin 15 moves, the convex and concave parts of the wavy structure of the guide plates 14 will guide the retaining rods 17 fixedly connected to the outer wall of the material spreading bin 15, so that the retaining rods 17 start to drive the material spreading bin 15 to twist and vibrate during the movement, thereby preventing the powder from clogging in the material spreading bin 15 and being unable to be evenly spread on the silicone rubber.

[0027] Further, a transmission ring 19 is fixedly connected to the inner wall of the mixing cylinder 3. The outer wall of the transmission ring 19 is abutted against the outer wall of the transmission column 12. The inner end wall of the bearing cylinder 2 is fixedly connected with a sealing ring 20 that wraps the lower side of the transmission ring 19. The transmission ring 19 drives the transmission column 12 to rotate. In order to prevent the silicone rubber inside the mixing cylinder 3 from adhering to the transmission ring 19 and affecting the abutting transmission between the transmission ring 19 and the transmission column 12, the sealing ring 20 is used to cover the transmission ring 19, thereby preventing the silicone rubber from adhering to the transmission ring 19.

[0028] Further, a sealing plate 21 is slidably connected to the bottom of the powder bin 7 to cover and seal the material discharge port 8. The end of the sealing plate 21 is fixedly connected to a spring 22, and the other end of the spring 22 is fixedly connected to the inner wall of the end of the bearing cylinder 2. When the material spreading bin 15 moves, its end can push against the end of the sealing plate 21; the material discharge port 8 is sealed by the provided sealing plate 21. When the material spreading bin 15 moves to the bottom of the material discharge port 8, it pushes against the sealing plate 21, causing the material discharge port 8 to open, so that the powder in the powder bin 7 can only enter the material spreading bin 15, thereby preventing the powder in the powder bin 7 from leaking into the mixing cylinder 3 through the material discharge port 8 and affecting the uniformity of the mixing of silicone rubber and powder.

[0029] Further, both sides of the bottom of the stop bar 17 gradually extend in an arc shape towards the middle, and the bottom of the stop bar 17 forms a semi-cylindrical structure after extension; the semi-cylindrical structure formed at the bottom of the stop bar 17 can guide when it contacts the top of the guide plate 14, thereby preventing the stop bar 17 from getting stuck at the wavy structure of the guide plate 14.

[0030] Working principle: This embodiment provides a silicone rubber mixing device. When in use, silicone rubber is added through the feed bin door 5, and the powder is placed into the powder bin 7. When the motor 9 operates, it drives the mixing cylinder 3 to rotate by abutting against the mixing cylinder 3 through the transmission disc 11. The rotation of the mixing cylinder 3 causes the spiral conveyor blades 4 on the inner wall to mix and convey the silicone rubber. The rotation of the mixing cylinder 3 drives the transmission ring 19 to rotate. The rotation of the transmission ring 19 drives the transmission column 12 in contact with it to rotate. The rotation of the transmission column 12 drives the reciprocating lead screw 13 to rotate. The rotation of the reciprocating lead screw 13 drives the slider 18 to reciprocate in the mixing cylinder 3, and the slider 18 drives the material spreading bin 15 to reciprocate on the guide plate 14. When the material spreading bin 15 moves to the bottom of the powder bin 7, the end of the material spreading bin 15 pushes against the sealing plate 21, causing the sealing plate 21 to move and compress the spring 22 to contract, so that the sealing plate 21 cannot cover and seal the material discharge port 8. At this time, the powder in the powder bin 7 will enter the material spreading bin 15. As the material spreading bin 15 moves in the mixing cylinder 3 and gradually stops contacting the sealing plate 21, the sealing plate 21 will reset under the elastic force of the spring 22 and re-seal the material discharge port 8. During the movement of the material spreading bin 15, the powder in the material spreading bin 15 will gradually fall onto the silicone rubber in the mixing cylinder 3 from the material spreading port 16, so that the powder is evenly spread on the silicone rubber. This process is repeated in sequence to enhance the mixing effect on the silicone rubber; the mixed silicone rubber is discharged from the discharge bin door 6 out of the mixing cylinder 3.

[0031] The embodiments disclosed in this utility model are preferred embodiments, but not limited to this. Those of ordinary skill in the art can easily understand the spirit of this utility model based on the above embodiments and make different extensions and changes. As long as they do not depart from the spirit of this utility model, they are within the protection scope of this utility model.

Claims

1. A silicone rubber mixing device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to an inclined bearing cylinder (2), the inner wall of the bearing cylinder (2) is rotatably connected to a mixing cylinder (3), the inner wall of the mixing cylinder (3) is fixedly connected to a spiral conveying sheet (4) for mixing silicone rubber, the two ends of the bearing cylinder (2) are respectively provided with a feed bin door (5) and a discharge bin door (6), the end of the bearing cylinder (2) is fixedly connected to a powder bin (7), the bottom of the powder bin (7) passes through the end of the bearing cylinder (2) to the inside thereof, and the bottom of the powder bin (7) is provided with a discharge port (8), the outer wall of the base (1) is fixedly connected to a motor (9), the outer wall of the bearing cylinder (2) is provided with a transmission groove (10), the main shaft of the motor (9) is fixedly connected to a transmission disc (11), the outer wall of the transmission disc (11) passes through the transmission groove (10) and abuts against the outer wall of the mixing cylinder (3), and the inside of the mixing cylinder (3) is provided with a spreading mechanism for evenly spreading powder inside thereof.

2. A silicone rubber mixing device according to claim 1, characterized in that: The material spreading mechanism comprises a transmission column (12) rotatably connected to the inner end wall of the bearing cylinder (2), the other end of the transmission column (12) is fixedly connected to a reciprocating screw rod (13), the inner end wall of the bearing cylinder (2) is fixedly connected to a symmetrically arranged guide plate (14), a material spreading bin (15) is arranged between the guide plates (14), the bottom of the material spreading bin (15) is provided with a material spreading opening (16), both sides of the material spreading bin (15) are fixedly connected to a blocking rod (17), the bottom of the blocking rod (17) is respectively abutted against the top of the guide plate (14), the outer wall of the reciprocating screw rod (13) is sleeved with a sliding block (18), and the sliding block (18) is threadedly connected to the reciprocating screw rod (13), and the other end of the sliding block (18) is hinged to the top of the material spreading bin (15).

3. A silicone rubber mixing device according to claim 2, characterized in that: The top of the guide plate (14) is a wave-shaped structure, and the convex parts and concave parts of the wave-shaped structure of the guide plate (14) are used to guide the movement of the blocking rod (17).

4. A silicone rubber mixing device according to claim 2, characterized in that: A transmission ring (19) is fixedly connected to the inner wall of the mixing cylinder (3), the outer wall of the transmission ring (19) abuts against the outer wall of the transmission column (12), and a sealing ring (20) is fixedly connected to the inner end wall of the supporting cylinder (2) so as to wrap the lower side of the transmission ring (19).

5. A silicone rubber mixing device according to claim 2, characterized in that: The bottom of the powder bin (7) is slidably connected to a sealing plate (21) that covers and seals the discharge port (8); the end of the sealing plate (21) is fixedly connected to a spring (22); the other end of the spring (22) is fixedly connected to the inner wall of the end of the supporting tube (2); and the end of the material scattering bin (15) can push the end of the sealing plate (21) when it moves.

6. A silicone rubber mixing device according to claim 2, characterized in that: Both sides of the bottom of the blocking rod (17) gradually extend in an arc shape toward the middle, and the bottom of the blocking rod (17) forms a semi-cylindrical structure after extension.

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