Mixing stirrer for silicone rubber production

Abstract

The invention provides a mixing stirrer for silicone rubber production, which comprises a frame and a mixing bin, the frame is provided with a movable seat and a driving assembly, the movable seat is provided with a rotatable stirring rod, one end of the stirring rod extends into the mixing bin, and the part of the stirring rod located in the mixing bin is provided with stirring blades. A movable rack is further arranged on the movable seat, a transmission gear meshed with the rack is arranged on the stirring shaft in a sleeving mode, the moving direction of the rack on the movable seat is perpendicular to the moving direction of the movable seat on the rack, a guide seat is further arranged on the rack, the guide seat and the movable seat are arranged in a spaced mode, and a guide rod is arranged on the guide seat; the included angle between the axial direction of the guide rod and the moving direction of the movable base is an acute angle, and a guide sleeve is arranged at one end of the rack and arranged on the guide rod in a sleeving mode. The technical problems that an existing silicone rubber raw material mixing device is low in mixing efficiency and uneven in mixing are solved, and the technical effect of improving the raw material mixing efficiency and the uniformity degree is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of silicone rubber product production, and particularly to a mixing and stirring machine for silicone rubber production. Background Art

[0002] Silicone rubber products are made from methyl vinyl silicone rubber as the base rubber, adding various fillers (reinforcing agents, heat-resistant agents, modifiers, etc.) through production processes such as mixing, calendering, filtering, vulcanization, molding, extrusion, and bonding.

[0003] During the production process of silicone rubber products, it is necessary to uniformly mix various raw materials such as powder materials, rubber, and silica gel, and then perform subsequent processing to finally obtain finished products. The mixing quality of the raw materials will directly affect the quality of the finished products. The existing silicone rubber raw material mixing devices usually use stirring blades to stir the raw materials in the container in a single direction. The mixing takes a long time, and during the stirring process, raw materials will accumulate in some areas of the container, resulting in insufficient mixing. Therefore, it is difficult for the raw materials to be fully mixed in the container. Thus, the existing silicone rubber raw material mixing devices have problems of low mixing efficiency and uneven mixing. Summary of the Invention

[0004] Aiming at the deficiencies in the prior art, the present invention provides a mixing and stirring machine for silicone rubber production, which solves the problems of low mixing efficiency and uneven mixing of the existing silicone rubber raw material mixing devices.

[0005] According to an embodiment of the present invention, a mixing and stirring machine for silicone rubber production includes a frame and a mixing bin arranged on the frame. The frame is further provided with a movable movable seat and a driving assembly rotatably connected to the movable seat. The driving assembly drives the movable seat to reciprocate on the frame and approach or move away from the mixing bin. The movable seat is provided with a rotatable stirring rod. One end of the stirring rod extends into the mixing bin, and stirring blades are arranged on the part of the stirring rod located in the mixing bin. The movable seat is further provided with a movable rack, and a transmission gear meshing with the rack is sleeved on the stirring shaft. The moving direction of the rack on the movable seat is perpendicular to the moving direction of the movable seat on the frame. The frame is further provided with a guiding seat, and the guiding seat is arranged at an interval from the movable seat. The guiding seat is provided with a guiding rod, and the axial direction of the guiding rod forms an acute angle with the moving direction of the movable seat. One end of the rack is provided with a guiding sleeve, and the guiding sleeve is sleeved on the guiding rod.

[0006] Compared with the prior art, the present invention has the following beneficial effects: By adopting a mixing bin to accommodate raw materials such as powder materials, rubber, and silica gel, after the driving component is started, it drives the movable seat to reciprocate on the frame, so that the stirring rod together with the stirring blades reciprocates in the mixing bin, thereby stirring the raw materials in the mixing bin. During the movement of the movable seat, the guiding sleeve on the rack slides along the axial direction of the guiding rod and drives the rack to reciprocate on the movable seat. During the movement of the rack, it drives the transmission gear to rotate, so that the stirring rod rotates on the movable seat. The stirring rod drives the stirring blades to rotate reciprocally in the mixing bin and stir the raw materials in the mixing bin, that is, the raw materials in the mixing bin are mixed by the compound movement of the stirring blades making reciprocating movement and reciprocating rotation in the mixing bin, avoiding the raw materials in the mixing bin being stirred along a single direction for a long time. It solves the technical problems of low mixing efficiency and uneven mixing of the existing silicone rubber raw material mixing device, produces the technical effect of improving the mixing efficiency and uniformity of the raw materials, and shortens the time required for uniform mixing of the raw materials, which is beneficial to improving the production efficiency of silicone rubber products. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 FIG. 6 is a schematic structural diagram of a mixing and stirring machine for silicone rubber production according to an embodiment of the present invention;

[0008] Figure 2 FIG. 10 is a sectional view of a mixing and stirring machine for silicone rubber production according to an embodiment of the present invention;

[0009] Figure 3 FIG. 14 is a schematic structural diagram of a mixing and stirring machine for silicone rubber production according to an embodiment of the present invention from another perspective;

[0010] Figure 4 FIG. 18 is a schematic structural diagram of a movable seat in a mixing and stirring machine for silicone rubber production according to an embodiment of the present invention.

[0011] In the above-mentioned drawings: 1. Frame; 11. Guide rail; 12. Dovetail groove; 13. Cylinder; 14. Piston rod; 2. Mixing bin; 21. Feeding port; 22. Discharging port; 3. Movable seat; 31. Stirring rod; 32. Stirring blade; 33. Transmission gear; 34. Slide block; 35. Slide groove; 36. Accommodating groove; 37. Mounting plate; 38. Through hole; 4. Driving component; 41. First motor; 42. Swing arm; 43. Connecting rod; 44. Mounting rod; 45. Sprocket; 46. Transmission chain; 5. Guide seat; 51. Guide rod; 6. Rack; 61. Guiding sleeve; 7. Feeding hopper; 71. Flipping cover plate; 8. Discharging pipe; 81. Second motor; 82. Conveying rod; 83. Spiral blade; 84. Baffle plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] The technical solutions in the present invention will be further described below with reference to the drawings and embodiments.

[0013] AsFigures 1 to 4 As shown, an embodiment of the present invention provides a mixing and stirring machine for silicone rubber production, which is used to mix various raw materials such as powder materials, rubber, and silica gel during the production process of silicone rubber products.

[0014] Please refer to Figure 1 and Figure 2 , the mixing and stirring machine for silicone rubber production includes a frame 1 and a mixing bin 2 arranged on the frame 1. A movable seat 3 and a driving component 4 rotatably connected to the movable seat 3 are further arranged on the frame 1. The driving component 4 drives the movable seat 3 to reciprocate on the frame 1 and approach or move away from the mixing bin 2. A rotatable stirring rod 31 is arranged on the movable seat 3. One end of the stirring rod 31 extends into the mixing bin 2, and stirring blades 32 are arranged on the part of the stirring rod 31 located in the mixing bin 2. When the movable seat 3 reciprocates under the drive of the driving component 4, the stirring blades 32 are driven to reciprocate in the mixing bin 2 synchronously; A movable rack 6 is further arranged on the movable seat 3, and a transmission gear 33 meshing with the rack 6 is sleeved on the stirring shaft. The moving direction of the rack 6 on the movable seat 3 is perpendicular to the moving direction of the movable seat 3 on the frame 1. A guide seat 5 is further arranged on the frame 1, and the guide seat 5 is arranged at an interval from the movable seat 3. A guide rod 51 is arranged on the guide seat 5. The axial direction of the guide rod 51 forms an acute angle with the moving direction of the movable seat 3. One end of the rack 6 is provided with a guide sleeve 61, and the guide sleeve 61 is sleeved on the guide rod 51. When the driving component 4 drives the movable seat 3 to reciprocate, the guide sleeve 61 slides along the axial direction of the guide rod 51 on the guide rod 51. Since the axial direction of the guide rod 51 forms an acute angle with the moving direction of the movable seat 3, the movable sleeve drives the rack 6 to reciprocate on the movable seat 3 when sliding, and the rack 6 drives the transmission gear 33 to rotate when moving, so as to drive the stirring rod 31 to rotate, so that the stirring blades 32 rotate reciprocally in the mixing bin 2, that is, when the movable seat 3 moves under the drive of the driving component 4, the stirring blades 32 make a compound movement of reciprocating horizontally in the mixing bin 2 and reciprocatingly rotating around the stirring rod 31.

[0015] Specifically, the operation steps for mixing the raw materials for producing silicone rubber products using the mixing and stirring machine for silicone rubber production provided in this embodiment are as follows: Pour the powder materials, rubber, and silicone raw materials into the mixing bin 2 in proportion. After the raw materials are poured, start the driving component 4 to drive the movable seat 3 to reciprocate on the frame 1. When the movable seat 3 moves, the stirring rod 31 together with the stirring blades 32 reciprocates in the mixing bin 2. When the stirring blades 32 move, they will stir the raw materials in the mixing bin 2. At the same time that the movable seat 3 moves, the guiding sleeve 61 slides along the axial direction of the guiding rod 51 and drives the rack 6 to reciprocate on the movable seat 3. The movement of the rack 6 drives the transmission gear 33 to rotate, which can drive the stirring rod 31 to reciprocally rotate on the movable seat 3. When the stirring rod 31 rotates, it drives the stirring blades 32 to reciprocally rotate in the mixing bin 2 and stir the raw materials in the mixing bin 2. That is, when the mixing and stirring machine for silicone rubber production operates, the stirring blades 32 perform a composite movement of reciprocating movement and reciprocating rotation in the mixing bin 2 to mix the raw materials in the mixing bin 2. The mixing and stirring machine for silicone rubber production provided in this embodiment can prevent the raw materials in the mixing bin 2 from being stirred in a single direction for a long time, prevent the raw materials from accumulating in some areas of the mixing bin 2, thereby improving the mixing efficiency and uniformity of the raw materials, and shortening the time required for uniform mixing of the raw materials, which is beneficial to improving the production efficiency of silicone rubber products.

[0016] As Figure 2 and Figure 4 shown, a guide rail 11 is further provided on the frame 1. The guide rail 11 has a dovetail groove 12, and the length direction of the dovetail groove 12 is consistent with the moving direction of the movable seat 3. A slider 34 matching the dovetail groove 12 is provided on the movable seat 3. The cooperation between the dovetail groove 12 and the slider 34 restricts the moving direction of the movable seat 3 on the frame 1, prevents the movable seat 3 from deviating from the preset direction when moving, and the slider 34 being inserted into the dovetail groove 12 can ensure the reliable cooperation between the movable seat 3 and the guide rail 11, avoiding the movable seat 3 from detaching from the frame 1, thereby improving the structural stability of the mixing and stirring machine for silicone rubber production.

[0017] Please refer to Figure 1 and Figure 3The driving assembly 4 includes a first motor 41 and a swing arm 42 drivingly connected to the output end of the first motor 41, the swing arm 42 is rotatably arranged on the frame 1, and a connecting rod 43 is provided at one end of the swing arm 42 away from the rotating shaft of the swing arm 42, and a slide groove 35 is provided on the side of the movable seat 3 away from the mixing bin 2, the length direction of the slide groove 35 is perpendicular to the moving direction of the movable seat 3, and the connecting rod 43 extends into the slide groove 35 and abuts against the movable seat 3. When the swing arm 42 rotates on the frame 1 driven by the first motor 41, the connecting rod 43 rotates around the rotating shaft of the swing arm 42 and slides back and forth in the slide groove 35, and at the same time, the connecting rod 43 pushes or pulls the movable seat 3 to move on the frame 1, so as to realize the reciprocating movement of the movable seat 3 on the frame 1.

[0018] like Figure 3 As shown, two movable seats 3 and two swing arms 42 are arranged on the frame 1 at intervals, and the two swing arms 42 are connected in transmission. The two swing arms 42 are respectively provided with the connecting rods 43, and the connecting rods 43 are respectively matched with the slide grooves 35 on the two movable seats 3 in a one-to-one manner. By arranging two movable seats 3 at intervals on the frame 1 and arranging the stirring rods 31 and the stirring blades 32 on the two movable seats 3, and arranging two swing arms 42 connected in transmission to match the two movable seats 3 in a one-to-one manner, the two swing arms 42 can rotate synchronously under the drive of the first motor 41, so that the two movable seats 3 can reciprocate on the frame 1 at the same time, and the moving directions of the two movable seats 3 can be kept opposite by adjusting the initial positions of the two swing arms 42, so that the stirring blades 32 on the two stirring rods 31 in the mixing bin 2 are inconsistent in movement, which can further improve the stirring effect of the mixing mixer for silicone rubber production and ensure that the raw materials in the mixing bin 2 are evenly mixed.

[0019] Specifically, the swing arms 42 are respectively provided with mounting rods 44, and the mounting rods 44 are sleeved with sprockets 45, the frame 1 is provided with mounting holes matched with the mounting rods 44, the output end of the first motor 41 is matched with one of the mounting rods 44, and the two sprockets 45 are connected by transmission chains 46. The two swing arms 42 are respectively installed on the frame 1 by the matching of the mounting rods 44 with the mounting holes, and the sprockets 45 on the two mounting rods 44 are connected by transmission chains 46. When the first motor 41 drives the mounting rod 44 matched with the first motor 41 to rotate, the power output by the first motor 41 can be transmitted to the other mounting rod 44 through the transmission connection between the sprockets 45 and the transmission chain 46, so that the two swing arms 42 rotate synchronously, thereby driving the two movable seats 3 to move simultaneously.

[0020] Please refer to Figure 1 and Figure 4 On the movable seat 3, a receiving groove 36 is provided. The length direction of the receiving groove 36 is consistent with the moving direction of the movable seat 3, and the rack 6 is movably arranged in the receiving groove 36. The receiving groove 36 provided on the movable seat 3 is used to accommodate the rack 6, so as to improve the stability of the cooperation between the rack 6 and the movable seat 3 and avoid unexpected deviation when the rack 6 moves.

[0021] Please combine Figure 2 and Figure 4 On the stirring rod 31, two mounting plates 37 are provided at intervals. The stirring blades 32 are arranged between the two mounting plates 37, and both ends of the stirring blades 32 are fixedly connected to the two mounting plates 37 in a one-to-one correspondence. A plurality of through holes 38 are provided at intervals on the stirring blades 32.

[0022] In this embodiment, a feed inlet 21 is opened at the top of the mixing bin 2, and a feed hopper 7 communicating with the feed inlet 21 is provided on the mixing bin 2. A rotatable turning cover plate 71 is provided at the opening of the feed hopper 7, and the turning cover plate 71 closes the opening of the feed hopper 7. After the raw materials to be mixed are poured into the feed hopper 7, they can pass through the feed inlet 21 and enter the mixing bin 2, so as to facilitate the addition of the raw materials into the mixing bin 2. By rotating the turning cover plate 71, the feed hopper 7 can be opened or closed. When the turning cover plate 71 is opened, the raw materials can be added into the feed hopper 7. When the turning cover plate 71 is closed, the opening of the feed hopper 7 is closed to prevent the raw materials in the mixing bin 2 from leaking from the feed inlet 21 or foreign matters in the external environment from entering the mixing bin 2.

[0023] As Figure 1 and Figure 2 shown, a discharge port 22 is opened at the bottom of the mixing bin 2, and a discharge pipe 8 communicating with the discharge port 22 is provided on the mixing bin 2. A second motor 81 is provided on the discharge pipe 8, and a conveying rod 82 is provided at the output end of the second motor 81. The conveying rod 82 extends into the discharge pipe 8, and one end of the conveying rod 82 extends towards the opening of the discharge pipe 8. A spiral blade 83 is provided on the part of the conveying rod 82 located in the discharge pipe 8. After the raw materials are mixed, they fall into the discharge pipe 8 from the discharge port 22. The second motor 81 drives the conveying rod 82 to rotate, driving the spiral blade 83 to rotate, so as to convey the raw materials in the discharge pipe 8 along the discharge pipe 8 towards the opening of the discharge pipe 8, so as to accelerate the discharge of the raw materials in the discharge pipe 8. At the same time, the spiral blade 83 is used to convey the raw materials to prevent the discharge pipe 8 from being blocked and improve the discharge efficiency.

[0024] Specifically, a movable baffle plate 84 is further provided on the discharge pipe 8. The baffle plate 84 is located above the conveying rod 82 and is disposed close to the discharge port 22. A cylinder 13 is provided on the frame 1, and a piston rod 14 is provided at the output end of the cylinder 13. One end of the piston rod 14 is engaged with the baffle plate 84. By using the cylinder 13 to drive the piston rod 14 to move and drive the baffle plate 84 to move, the opening or closing of the discharge port 22 can be controlled. When the piston rod 14 extends out of the cylinder 13, the baffle plate 84 extends into the discharge pipe 8 and covers the opening of the discharge port 22. At this time, the raw materials in the mixing bin 2 are blocked by the baffle plate 84, preventing the raw materials that are not evenly mixed from falling into the discharge pipe 8. After the raw materials are mixed, the cylinder 13 drives the piston rod 14 to retract into the cylinder 13 and drives the baffle plate 84 to withdraw from the discharge pipe 8. At this time, the baffle plate 84 is away from the discharge port 22, enabling the raw materials in the mixing bin 2 to be discharged along the discharge pipe 8. The operation is simple and the control is convenient.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A mixing and stirring machine for silicone rubber production, comprising a frame and a mixing bin arranged on the frame, characterized in that: The frame is also provided with a movable seat and a driving assembly rotatably connected to the movable seat, and the driving assembly drives the movable seat to reciprocate on the frame and approach or move away from the mixing bin. The movable seat is provided with a rotatable stirring rod, one end of the stirring rod extends into the mixing bin and a stirring blade is provided on the part of the stirring rod located in the mixing bin. The movable seat is also provided with a movable rack and the stirring shaft is sleeved with a transmission gear meshing with the rack. The direction in which the rack moves on the movable seat is perpendicular to the direction in which the movable seat moves on the frame. The frame is also provided with a guide seat and the guide seat is spaced apart from the movable seat. A guide rod is provided on the guide seat, and the angle between the axial direction of the guide rod and the moving direction of the movable seat is an acute angle. A guide sleeve is provided at one end of the rack and the guide sleeve is sleeved on the guide rod.

2. A mixing and stirring machine for silicone rubber production as claimed in claim 1, characterized in that: The frame is also provided with a guide rail, the guide rail has a dovetail groove, and the length direction of the dovetail groove is consistent with the moving direction of the movable seat, and the movable seat is provided with a sliding block matched with the dovetail groove.

3. A mixing and stirring machine for silicone rubber production as claimed in claim 1, characterized in that: The driving assembly includes a first motor and a swing arm drivingly connected to the output end of the first motor, the swing arm is rotatably arranged on the frame and a connecting rod is provided at one end of the swing arm away from the rotating shaft of the swing arm, a slide groove is provided on the side of the movable seat away from the mixing bin, the length direction of the slide groove is perpendicular to the moving direction of the movable seat and the connecting rod extends into the slide groove and abuts against the movable seat.

4. A mixing and stirring machine for silicone rubber production as claimed in claim 3, characterized in that: Two movable seats and two swing arms are arranged on the frame at intervals, the two swing arms are transmission-connected, the two swing arms are respectively provided with connecting rods, and the connecting rods are respectively matched with the sliding grooves on the two movable seats in a one-to-one manner.

5. A mixing and stirring machine for silicone rubber production as claimed in claim 4, characterized in that: The swing arms are respectively provided with mounting rods and the mounting rods are sleeved with sprockets, the frame is provided with mounting holes matched with the mounting rods, the output end of the first motor is matched with one of the mounting rods and the two sprockets are connected by a transmission chain.

6. A mixing and stirring machine for silicone rubber production as claimed in claim 1, characterized in that: The movable seat is provided with a receiving groove, the length direction of the receiving groove is consistent with the moving direction of the movable seat, and the rack is movably arranged in the receiving groove.

7. A mixing and stirring machine for silicone rubber production as claimed in claim 1, characterized in that: Two mounting plates are arranged at intervals on the stirring rod, the stirring blade is arranged between the two mounting plates, and two ends of the stirring blade are respectively fixedly connected with the two mounting plates in a one-to-one correspondence, and a plurality of through holes are arranged at intervals on the stirring blade.

8. A mixing and stirring machine for silicone rubber production as claimed in claim 1, characterized in that: A feed port is provided on the top of the mixing bin and a feed hopper connected with the feed port is provided on the mixing bin. A rotatable flap is provided at the opening of the feed hopper and the flap closes the opening of the feed hopper.

9. A mixing and stirring machine for silicone rubber production as claimed in claim 1, characterized in that: A discharge port is provided at the bottom of the mixing bin and a discharge pipe connected with the discharge port is provided on the mixing bin, a second motor is provided on the discharge pipe and a conveying rod is provided at the output end of the second motor, the conveying rod extends into the discharge pipe and one end of the conveying rod extends toward the opening of the discharge pipe, and a spiral blade is provided on the part of the conveying rod located in the discharge pipe.

10. A mixing and stirring machine for silicone rubber production as claimed in claim 9, characterized in that: The discharge pipe is also provided with a movable baffle plate, which is located above the conveying rod and close to the discharge port. The frame is provided with a cylinder and the output end of the cylinder is provided with a piston rod, and one end of the piston rod cooperates with the baffle plate.

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