Raw material mixing device for sealing rubber ring production and mixing method thereof

Abstract

The invention discloses a raw material mixing device for sealing rubber ring production and a mixing method thereof, and relates to the technical field of sealing rubber ring production, the raw material mixing device comprises a driving motor, a reduction gearbox body and a mixing trough, the output end of the driving motor is connected with the reduction gearbox body, and the mixing trough is arranged at one end of the reduction gearbox body; a first rotating shaft and a second rotating shaft which are parallel to each other are arranged in the mixing trough; materials in the mixing trough can be mixed and stirred, some moist raw materials can be scattered by matching with the tip end, mixing of the raw materials in the mixing trough is facilitated, various rubber ring raw materials can be further fully mixed, mixing of the raw materials is more thorough, and the materials can be conveniently discharged from the discharging trough; and the spiral blade rotates to thoroughly discharge the residual materials at the bottom end of the mixing trough from the blanking trough, and the spiral blade not only can stir and mix the materials, but also can discharge the materials by utilizing the spiral blade.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing rubber ring production, and specifically relates to a raw material mixing device and a mixing method for sealing rubber ring production. Background Art

[0002] The rubber for the raw material mixing of the sealing rubber ring is a high-elastic polymer material that can produce large deformations under the action of a small external force and return to its original state after the external force is removed. The sealing rubber ring is usually made of rubber and is widely used in various industrial and daily life sealing occasions because of its excellent sealing performance, corrosion resistance, heat resistance and aging resistance. The performance of the sealing rubber ring depends on the ratio of its raw materials and the degree of mixing uniformity. The process of raw material mixing is to mix various rubber raw materials, fillers, anti-aging agents, accelerators and other additives in a specific proportion to prepare a rubber material that meets specific performance requirements; In the prior art, before processing the raw materials of the sealing rubber ring, different raw materials and mixing agents need to be mixed to facilitate the subsequent melting of the raw materials or mixing agents in a heating device. However, when using a horizontal mixer for mixing the sealing rubber ring, there are problems such as inconvenient mixing. The raw materials of the sealing rubber ring are prone to accumulate and rotate in one place, and the materials are not easy to swing back and forth along the axis direction of the rotating shaft, so that the materials or mixing agents cannot be fully mixed. When the materials or mixing agents are discharged, some materials are easy to remain inside the mixing material tank, so a small amount of materials need to be manually discharged, which is rather troublesome. Summary of the Invention

[0003] The purpose of the present invention is to provide a raw material mixing device and a mixing method for sealing rubber ring production to solve the problems raised in the above background art.

[0004] The purpose of the present invention can be achieved through the following technical solutions: A raw material mixing device for producing a sealing rubber ring, comprising a driving motor, a reduction gearbox body and a mixing material tank. The output end of the driving motor is connected to the reduction gearbox body. The mixing material tank is arranged at one end of the reduction gearbox body. Inside the mixing material tank, a first rotating shaft and a second rotating shaft are arranged in parallel. Both the first rotating shaft and the second rotating shaft are connected to the reduction gearbox body, and the rotating directions of the first rotating shaft and the second rotating shaft are opposite. Inside the mixing material tank and between the first rotating shaft and the second rotating shaft, a mixing structure is arranged. The mixing structure includes a first spiral blade and a second spiral blade. The first spiral blade is arranged on the cylindrical surface of the first rotating shaft, and the second spiral blade is arranged on the cylindrical surface of the second rotating shaft. Both the first spiral blade and the second spiral blade are composed of several groups of blades with opposite spiral directions, and the blades with different spiral directions of the first spiral blade are arranged alternately, and the blades with different spiral directions of the second spiral blade are arranged alternately. The intersection of the blades with different spiral directions of the first spiral blade and the intersection of the blades with different spiral directions of the second spiral blade are both mating tips. The mating tips of the first spiral blade and the mating tips of the second spiral blade are staggered from each other, and the blades of the first spiral blade and the blades of the second spiral blade are always in a separated state. The first spiral blade and the second spiral blade are used to mix the materials in the mixing material tank.

[0005] As a preferred technical solution of the present invention, the spiral angles of the first spiral blade and the second spiral blade are the same, and the spiral angles of both the first spiral blade and the second spiral blade are less than 180°. The edges of the blades with different spiral directions of the first spiral blade are welded together, and the edges of the blades with different spiral directions of the second spiral blade are welded together.

[0006] As a preferred technical solution of the present invention, horizontal mating holes are provided at the blades of the first spiral blade and the blades of the second spiral blade. The mating holes of the first spiral blade are arranged in a circular array, and the mating holes of the second spiral blade are arranged in a circular array. A first fixed shaft is rotatably connected inside the mating holes of the first spiral blade, and several first stirring blades are installed outside the first fixed shaft. A second fixed shaft is rotatably connected inside the mating holes of the second spiral blade, and several second stirring blades are installed outside the second fixed shaft. The first stirring blades and the second stirring blades are used to further stir and mix the materials in the mixing material tank.

[0007] As a preferred technical solution of the present invention, straight gears are provided at both ends of each first fixed shaft and both ends of each second fixed shaft. Inner gear rings are provided on the inner walls at both ends of the mixing material tank. The straight gears at the ends of each first fixed shaft and the straight gears at the ends of each second fixed shaft are all located inside the inner gear rings.

[0008] As a preferred technical solution of the present invention, the shape of the internal gear ring is in the shape of an "8", and each spur gear meshes with the inner wall of the internal gear ring, and the spur gear of the first fixed shaft and the spur gear of the second fixed shaft alternately pass through the middle position of the internal gear ring.

[0009] As a preferred technical solution of the present invention, each spur gear of the first fixed shaft revolves around the axis of the first rotating shaft and rotates around the axis of the first fixed shaft at the same time, and each spur gear of the second fixed shaft revolves around the axis of the second rotating shaft and rotates around the axis of the second fixed shaft at the same time.

[0010] As a preferred technical solution of the present invention, discharge structures are provided on both sides of the bottom end of the mixing material tank. The discharge structure includes a plurality of blanking grooves. The blanking grooves are opened on both sides of the bottom end of the mixing material tank. Fixing blocks are welded on the side wall of the mixing material tank and above each blanking groove. A baffle plate is arranged inside each blanking groove. The top end of the baffle plate is connected to the fixing block through a connecting pin. Clamping blocks are welded at the bottom end of the mixing material tank and at the edge of each baffle plate. A clamping plate is inserted into each clamping block, and the clamping plate is slidably connected to the inside of the clamping block.

[0011] As a preferred technical solution of the present invention, the position of the blanking groove corresponds to the position of the mating tip. The edges of the first spiral blade and the second spiral blade are both in contact with the inner wall of the mixing material tank, and the first spiral blade and the second spiral blade are used to push the material inside the mixing material tank to be discharged from the blanking groove.

[0012] A mixing method for a raw material mixing device for producing a sealing rubber ring includes the following steps: Step 1. Preparation work before mixing: According to the specific requirements of the rubber ring, determine the raw material formula for processing the sealing rubber ring, including the proportions of natural rubber, synthetic rubber, filler, softener, antioxidant, accelerator and other additives, ensure that the mixer is in good working condition, and accurately weigh various raw materials and materials according to the formula ratio; Step 2. Mixing process of the raw materials: Start the driving motor to drive the reduction gearbox to rotate, so that the first rotating shaft and the second rotating shaft both rotate, and put the raw material formula of the sealing rubber ring in Step 1 into the inside of the mixing material tank; The rotating first rotating shaft and second rotating shaft stir and mix the materials in the mixing material tank. The first stirring blades on the first fixed shaft and the second stirring blades on the second fixed shaft can further stir and mix the materials; Step 3. Discharge the stirred materials: Open the baffle plate to make the materials discharged from the blanking groove, and the driving motor drives the first spiral blade and the second spiral blade to rotate to discharge all the materials from the blanking groove; Step Four, Post - mixing Processing: Conduct quality inspection on the well - mixed raw materials of the sealing rubber ring to ensure that all raw materials of the sealing rubber ring are within the specified range. Then, pack the well - mixed materials or directly put them into the melting equipment for processing the sealing rubber ring.

[0013] As a preferred technical solution of the present invention, the driving motor in Step Three adopts two rotation modes: forward rotation and reverse rotation. When the first spiral blade cannot completely discharge the raw materials in the mixing material tank in the forward rotation mode, the rotation direction of the first spiral blade is changed to reverse rotation.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: It is provided with a mixing structure. The first spiral blade and the second spiral blade can mix and stir the materials in the mixing material tank, and the materials are fully mixed together by the blades with different rotation directions. The cooperating tips can break up some wet raw materials, which is beneficial to the mixing of the raw materials in the mixing material tank. While each spur gear of the fixed shaft revolves around the axis of the rotating shaft, it rotates around the axis of the fixed shaft at the same time. Thus, while the spiral blade stirs and mixes the raw materials, the stirring blades can stir and mix the materials in the mixing material tank, and various raw materials of the rubber ring can be further fully mixed, and the mixing of the raw materials is more thorough. It is provided with a discharging structure. The materials are discharged from the blanking chute. It is convenient to discharge the materials from the blanking chute, and the rotation of the spiral blade can completely discharge the residual materials at the bottom of the mixing material tank from the blanking chute. The driving motor in Step Three drives the first spiral blade and the second spiral blade to rotate, which can discharge all the materials from the blanking chute. The spiral blade can not only stir and mix the materials, but also discharge the materials by using the spiral blade. Brief Description of the Drawings

[0015] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the drawings.

[0016] Figure 1 It is the main structure diagram of the present invention; Figure 2 It is the internal schematic diagram of the mixing material tank of the present invention; Figure 3 It is the schematic diagram of the mixing structure of the present invention; Figure 4 It is the schematic diagram of the first spiral blade and the second spiral blade of the present invention; Figure 5 It is the schematic diagram of the cooperating tips of the present invention; Figure 6 It is the schematic diagram of the first stirring blade and the second stirring blade of the present invention; Figure 7Schematic diagram of the internal gear ring and spur gear of the present invention; Figure 8 Schematic diagram of the discharging structure of the present invention; Figure 9 Schematic diagram of the clamping block and clamping plate of the present invention.

[0017] In the figure: 1, driving motor; 2, reduction gearbox body; 3, mixing material tank; 4, first rotating shaft; 5, second rotating shaft; 6, mixing structure; 61, first spiral blade; 62, second spiral blade; 63, mating tip; 64, first fixed shaft; 65, first stirring blade; 66, second fixed shaft; 67, second stirring blade; 68, internal gear ring; 69, spur gear; 610, mating hole; 7, discharging structure; 71, blanking chute; 72, fixing block; 73, baffle plate; 74, connecting pin; 75, clamping block; 76, clamping plate. Detailed implementation manners

[0018] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1:

[0020] Please refer to Figures 1 - 7As shown in the figure, a raw material mixing device for producing a sealing rubber ring includes a driving motor 1, a reduction gearbox 2, and a mixing material tank 3. The output end of the driving motor 1 is connected to the reduction gearbox 2, and the mixing material tank 3 is arranged at one end of the reduction gearbox 2. The driving motor 1 drives the reduction gearbox 2 to rotate, so that the reduction gearbox 2 rotates at an appropriate speed. Inside the mixing material tank 3, a first rotating shaft 4 and a second rotating shaft 5 are arranged in parallel. Both the first rotating shaft 4 and the second rotating shaft 5 are connected to the reduction gearbox 2, and the rotating directions of the first rotating shaft 4 and the second rotating shaft 5 are opposite. The reduction gearbox 2 drives the first rotating shaft 4 to rotate, so that the first rotating shaft 4 and the second rotating shaft 5 rotate synchronously. Since the first rotating shaft 4 and the second rotating shaft 5 rotate in opposite directions, the first rotating shaft 4 and the second rotating shaft 5 can rotate the materials inside the mixing material tank 3. Inside the mixing material tank 3 and between the first rotating shaft 4 and the second rotating shaft 5, a mixing structure 6 is arranged. The mixing structure 6 includes a first spiral blade 61 and a second spiral blade 62. The first spiral blade 61 is arranged on the cylindrical surface of the first rotating shaft 4, and the second spiral blade 62 is arranged on the cylindrical surface of the second rotating shaft 5. The first rotating shaft 4 and the second rotating shaft 5 rotate in opposite directions, so as to drive the first spiral blade 61 and the second spiral blade 62 to rotate in opposite directions. Both the first spiral blade 61 and the second spiral blade 62 are composed of several groups of blades with opposite spiral directions, and the blades with different spiral directions of the first spiral blade 61 are arranged alternately, and the blades with different spiral directions of the second spiral blade 62 are arranged alternately. The arrangement of the blades of the first spiral blade 61 and the second spiral blade 62 enables the use of the two groups of spiral blades to stir the materials in the mixing material tank 3, making the materials inside the mixing material tank 3 relatively uniform. The intersections of the blades with different spiral directions of the first spiral blade 61 and the intersections of the blades with different spiral directions of the second spiral blade 62 are all mating tips 63. The mating tip 63 of the first spiral blade 61 and the mating tip 63 of the second spiral blade 62 are staggered from each other. The mating tip 63 of the first spiral blade 61 can gather the materials at the mating tip 63, and the mating tip 63 of the second spiral blade 62 can gather the materials at the mating tip 63. The mating tip 63 can stir and mix the materials, and the blades of the first spiral blade 61 and the second spiral blade 62 are always in a separated state, avoiding damage to the mating tip 63 caused by the contact between the first spiral blade 61 and the second spiral blade 62. The first spiral blade 61 and the second spiral blade 62 are used to mix the materials in the mixing material tank 3.

[0021] Please refer to Figure 3 and Figure 5As shown, the helix angles of the first helical blade 61 and the second helical blade 62 are the same, so that the edges of the left-handed blades and the edges of the right-handed blades are welded together. When looking at the blades axially, there can be a certain gap between a set of blades, so that the material and the mixture can be mixed. Moreover, the helix angles of both the first helical blade 61 and the second helical blade 62 are less than 180°. The edges of the blades of different rotation directions of the first helical blade 61 are welded together, and the edges of the blades of different rotation directions of the second helical blade 62 are welded together. Thus, the gaps between the groups of rotating helical blades can be used as spaces for placing materials, and the spaces on each group of rotating helical blades can be used as spaces for mixing materials.

[0022] Please refer to Figure 2 and Figure 6 As shown, matching holes 610 in the horizontal direction are provided at the blades of the first helical blade 61 and the blades of the second helical blade 62. The matching holes 610 of the first helical blade 61 are arranged in a circular array, and the matching holes 610 of the second helical blade 62 are arranged in a circular array. The matching holes 610 of the first helical blade 61 and the second helical blade 62 are used for placing the first fixed shaft 64 and the second fixed shaft 66. A first fixed shaft 64 is rotatably connected inside the matching hole 610 of the first helical blade 61, and a number of first stirring blades 65 are installed outside the first fixed shaft 64. A second fixed shaft 66 is rotatably connected inside the matching hole 610 of the second helical blade 62, and a second stirring blade 67 is installed outside the second fixed shaft 66. The first stirring blade 65 and the second stirring blade 67 are used for further stirring and mixing the materials in the mixing material tank 3. When there is no spur gear 69, the friction force between the first stirring blade 65 and the materials can be used to make the first stirring blade 65 drive the first fixed shaft 64 to rotate, and the friction force between the second stirring blade 67 and the materials can be used to make the second stirring blade 67 drive the second fixed shaft 66 to rotate. During the rotation of the first fixed shaft 64 and the second fixed shaft 66, the first stirring blade 65 and the second stirring blade 67 can be used to stir the materials.

[0023] Please refer to Figure 2 and Figure 7As shown, spur gears 69 are provided at both ends of each first fixed shaft 64 and both ends of each second fixed shaft 66. Inner gear rings 68 are provided on the inner walls at both ends of the mixing material tank 3. The spur gears 69 at the ends of each first fixed shaft 64 and the spur gears 69 at the ends of each second fixed shaft 66 are all located inside the inner gear rings 68. When the first rotating shaft 4 rotates, it will drive the spur gear 69 at the end of the first fixed shaft 64 to rotate relative to the inner gear ring 68. Similarly, when the second rotating shaft 5 rotates, it will drive the spur gear 69 at the end of the second fixed shaft 66 to rotate relative to the inner gear ring 68. Thus, both the spur gear 69 of the first fixed shaft 64 and the spur gear 69 of the second fixed shaft 66 can rotate relative to the inner gear ring 68. The rotation of the first rotating shaft 4 and the second rotating shaft 5 enables the respective first fixed shaft 64 and second fixed shaft 66 above them to rotate, so that the first fixed shaft 64 and the second fixed shaft 66 are conducive to stirring the materials in the mixing material tank 3.

[0024] Please refer to Figure 7 As shown, the shape of the inner gear ring 68 is in the shape of an "8", and each spur gear 69 meshes with the inner wall of the inner gear ring 68, and the spur gear 69 of the first fixed shaft 64 and the spur gear 69 of the second fixed shaft 66 alternately pass through the exact middle position of the inner gear ring 68. Since the rotation paths of the first fixed shaft 64 and the second fixed shaft 66 will pass through the exact middle of the inner gear ring 68, it is easy for the spur gear 69 of the first fixed shaft 64 and the spur gear 69 of the second fixed shaft 66 to interfere. At this time, by having the spur gear 69 of the first fixed shaft 64 and the spur gear 69 of the second fixed shaft 66 pass through the exact middle of the inner gear ring 68 alternately, it is ensured that the spur gear 69 of the first fixed shaft 64 and the spur gear 69 of the second fixed shaft 66 can rotate normally relative to each other.

[0025] Please refer to Figure 7 As shown, each spur gear 69 of the first fixed shaft 64 revolves around the axis of the first rotating shaft 4 while rotating around the axis of the first fixed shaft 64, and each spur gear 69 of the second fixed shaft 66 revolves around the axis of the second rotating shaft 5 while rotating around the axis of the second fixed shaft 66. Through this operating mode, the first fixed shaft 64 and the second fixed shaft 66 can stir and mix the materials without affecting the stirring and mixing of the materials by the first spiral blade 61 and the second spiral blade 62.

[0026] It should be noted that the driving motor 1 drives the reduction gearbox 2 to adjust the rotational speed, causing the first rotating shaft 4 of the mixing material tank 3 to rotate. Similarly, the first rotating shaft 4 and the second rotating shaft 5 rotate in opposite directions, which can stir and mix the materials in the mixing material tank 3. Since the first rotating shaft 4 and the second rotating shaft 5 rotate in opposite directions, at this time, the first helical blade 61 of the first rotating shaft 4 and the second helical blade 62 of the second rotating shaft 5 rotate, which can stir the materials between the first helical blade 61 and the second helical blade 62. Thus, the materials in the mixing material tank 3, natural rubber, synthetic rubber, filler, softener, antioxidant, accelerator, and other additives are mixed. The first mating tip 63 can push the materials in one direction, and the mating tip 63 can place the materials in the mating tip 63 in the opposite direction. Thus, the materials located at the mating tip 63 can also be stirred. By using the spur gears 69 of the first fixed shaft 64 and the spur gears 69 of the second fixed shaft 66 rotating in the internal gear ring 68, the first stirring blade 65 and the second stirring blade 67 can also stir the mixing material tank 3.

[0027] Please refer to Figure 2 、 Figure 8 and Figure 9 As shown in the figure, discharge structures 7 are provided on both sides of the bottom end of the mixing material tank 3. The discharge structure 7 includes a plurality of blanking grooves 71, which are opened on both sides of the bottom end of the mixing material tank 3. After the stirring and mixing are completed, the materials need to be discharged from the blanking grooves 71 of the mixing material tank 3. Fixed blocks 72 are welded on the side wall of the mixing material tank 3 and above each blanking groove 71. A baffle 73 is provided inside each blanking groove 71. The top end of the baffle 73 is connected to the fixed block 72 through a connecting pin 74. The baffle 73 can rotate around the connecting pin 74, so that the baffle 73 can be opened or closed. Clamping blocks 75 are welded at the bottom end of the mixing material tank 3 and at the edge of each baffle 73. A clamping plate 76 is inserted into each clamping block 75. The clamping plate 76 is slidably connected to the inside of the clamping block 75. The opening and closing of the clamping plate 76 and the clamping block 75 can make the baffle 73 open and close, so as to control the materials to fall from the inside of the mixing material tank 3.

[0028] Please refer to Figure 8 and Figure 9As shown, the position of the blanking chute 71 corresponds to the position of the mating tip 63. The edges of the first spiral blade 61 and the second spiral blade 62 are both in contact with the inner wall of the mixing material chute 3. The first spiral blade 61 and the second spiral blade 62 are used to push the material inside the mixing material chute 3 to be discharged from the blanking chute 71. Since the mating tips 63 of the first spiral blade 61 and the mating tips 63 of the second spiral blade 62 are both aligned with the blanking chute 71, at this time, the first rotating shaft 4 and the second rotating shaft 5 can be used to push the material to the blanking chute 71. If there is a small amount of material at the mating tip 63, the rotation directions of the first rotating shaft 4 and the second rotating shaft 5 can be changed simultaneously so that the mating tip 63 can push the material to the blanking chute 71.

[0029] It should be noted that the mixed material needs to be discharged from the blanking chute 71 of the mixing material chute 3. Specifically, the clamping plate 76 is pulled out from the clamping block 75, the baffle plate 73 can rotate around the connecting pin 74, the material can fall from the blanking chute 71, and the first rotating shaft 4 and the second rotating shaft 5 can be rotated in different directions to discharge the material remaining inside the mixing material chute 3.

[0030] A mixing method for a raw material mixing device for producing a sealing rubber ring includes the following steps: Step 1. Preparation work before mixing: According to the specific requirements of the rubber ring, determine the raw material formula for processing the sealing rubber ring, including the proportions of natural rubber, synthetic rubber, filler, softening agent, antioxidant, accelerator, and other additives. Ensure that the mixer is in good working condition and accurately weigh various raw materials and materials according to the formula ratio. Step 2. Mixing process of the raw materials: Start the driving motor 1 to drive the reduction gearbox 2 to rotate, so that the first rotating shaft 4 and the second rotating shaft 5 both rotate. Put the raw material formula of the sealing rubber ring in step 1 into the inside of the mixing material chute 3. The rotating first rotating shaft 4 and second rotating shaft 5 stir and mix the material in the mixing material chute 3. The first stirring blade 65 on the first fixed shaft 64 and the second stirring blade 67 on the second fixed shaft 66 can both further stir and mix the material. Step 3. Discharge the mixed material: Open the baffle plate 73 so that the material is discharged from the blanking chute 71, and the driving motor 1 drives the first spiral blade 61 and the second spiral blade 62 to rotate to discharge all the material from the blanking chute 71. The driving motor 1 in step 3 adopts two methods of forward rotation and reverse rotation. When the first spiral blade 61 cannot completely discharge the raw materials in the mixing material chute 3 by forward rotation, the rotation direction of the first spiral blade 61 is changed to reverse rotation. Step 4. Post-mixing treatment: Perform quality inspection on the mixed raw materials of the sealing rubber ring to ensure that all raw materials of the sealing rubber ring are within the specified range, and then pack the mixed materials or directly put them into the melting equipment for processing the sealing rubber ring.

[0031] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation manners. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A raw material mixing device for the production of a sealing rubber ring, comprising a driving motor (1), a reduction gearbox (2) and a mixing material tank (3), the output end of the driving motor (1) is connected to the reduction gearbox (2), the mixing material tank (3) is arranged at one end of the reduction gearbox (2), and a first rotating shaft (4) and a second rotating shaft (5) arranged in parallel are provided inside the mixing material tank (3), both the first rotating shaft (4) and the second rotating shaft (5) are connected to the reduction gearbox (2), and the rotating directions of the first rotating shaft (4) and the second rotating shaft (5) are opposite, characterized in that, Inside the mixing material tank (3) and between the first rotating shaft (4) and the second rotating shaft (5), a mixing structure (6) is provided. The mixing structure (6) includes a first helical blade (61) and a second helical blade (62). The first helical blade (61) is arranged on the cylindrical surface of the first rotating shaft (4), and the second helical blade (62) is arranged on the cylindrical surface of the second rotating shaft (5). Both the first helical blade (61) and the second helical blade (62) are composed of several groups of blades with opposite helix directions, and the blades with different helix directions of the first helical blade (61) are arranged alternately, and the blades with different helix directions of the second helical blade (62) are arranged alternately. The intersections of the blades with different helix directions of the first helical blade (61) and the intersections of the blades with different helix directions of the second helical blade (62) are all mating tips (63). The mating tips (63) of the first helical blade (61) and the mating tips (63) of the second helical blade (62) are staggered from each other, and the blades of the first helical blade (61) and the blades of the second helical blade (62) are always in a separated state. The first helical blade (61) and the second helical blade (62) are used to mix the materials in the mixing material tank (3).

2. The raw material mixing device for producing a sealing rubber ring according to claim 1, characterized in that, The helix angle of the first helical blade (61) is the same as that of the second helical blade (62), and the helix angles of both the first helical blade (61) and the second helical blade (62) are less than 180°. The edges of the blades with different helix directions of the first helical blade (61) are welded together, and the edges of the blades with different helix directions of the second helical blade (62) are welded together.

3. The raw material mixing device for producing a sealing rubber ring according to claim 2, characterized in that, At the blades of the first helical blade (61) and the blades of the second helical blade (62), horizontal mating holes (610) are provided. The mating holes (610) of the first helical blade (61) are arranged in an annular array, and the mating holes (610) of the second helical blade (62) are arranged in an annular array. Inside the mating holes (610) of the first helical blade (61), a first fixed shaft (64) is rotatably connected. A number of first stirring blades (65) are installed outside the first fixed shaft (64). Inside the mating holes (610) of the second helical blade (62), a second fixed shaft (66) is rotatably connected. A number of second stirring blades (67) are installed outside the second fixed shaft (66). The first stirring blades (65) and the second stirring blades (67) are used to further stir and mix the materials in the mixing material tank (3).

4. A raw material mixing device for producing a sealing rubber ring according to claim 3, characterized in that, At both ends of each first fixed shaft (64) and at both ends of each second fixed shaft (66), spur gears (69) are provided. Inner gear rings (68) are provided on the inner walls at both ends of the mixing material tank (3). The spur gears (69) at the ends of each first fixed shaft (64) and the spur gears (69) at the ends of each second fixed shaft (66) are all located inside the inner gear rings (68).

5. The raw material mixing device for producing a sealing rubber ring according to claim 4, characterized in that, The shape of the inner gear ring (68) is in the shape of an "8", and each spur gear (69) meshes with the inner wall of the inner gear ring (68), and the spur gears (69) of the first fixed shaft (64) and the spur gears (69) of the second fixed shaft (66) alternately pass through the middle position of the inner gear ring (68).

6. A raw material mixing device for producing a sealing rubber ring according to claim 5, characterized in that, Each spur gear (69) of the first fixed shaft (64) rotates around the axis of the first fixed shaft (64) while revolving around the axis of the first rotating shaft (4), and each spur gear (69) of the second fixed shaft (66) rotates around the axis of the second fixed shaft (66) while revolving around the axis of the second rotating shaft (5).

7. The raw material mixing device for producing a sealing rubber ring according to claim 3, characterized in that, Discharge structures (7) are provided on both sides of the bottom end of the mixing material tank (3). The discharge structures (7) include a plurality of blanking grooves (71) which are opened on both sides of the bottom end of the mixing material tank (3). Fixed blocks (72) are welded on the side wall of the mixing material tank (3) and above each blanking groove (71). A baffle plate (73) is arranged inside each blanking groove (71). The top end of the baffle plate (73) is connected to the fixed block (72) through a connecting pin (74). Clamping blocks (75) are welded at the bottom end of the mixing material tank (3) and at the edge of each baffle plate (73). A clamping plate (76) is inserted into each clamping block (75), and the clamping plate (76) is slidably connected to the inside of the clamping block (75).

8. A raw material mixing device for producing a sealing rubber ring according to claim 7, characterized in that, The position of the blanking groove (71) corresponds to the position of the mating tip (63). The edges of the first spiral blade (61) and the second spiral blade (62) are both in contact with the inner wall of the mixing material tank (3), and the first spiral blade (61) and the second spiral blade (62) are used to push the material inside the mixing material tank (3) to be discharged from the blanking groove (71).

9. A mixing method of a raw material mixing device for producing the sealing rubber ring according to any one of claims 1-8, characterized in that, It includes the following steps: Step 1. Preparation work before mixing: According to the specific requirements of the rubber ring, determine the raw material formula for processing the sealing rubber ring, including the proportions of natural rubber, synthetic rubber, filler, softener, antioxidant, accelerator and other additives. Ensure that the mixer is in good working condition and accurately weigh various raw materials and materials according to the formula ratio. Step 2. Mixing process of the raw materials: Start the driving motor (1) to drive the reduction gearbox (2) to rotate, so that the first rotating shaft (4) and the second rotating shaft (5) both rotate. Put the raw material formula of the sealing rubber ring in Step 1 into the inside of the mixing material tank (3). The rotating first rotating shaft (4) and second rotating shaft (5) stir and mix the materials in the mixing material tank (3). The first stirring blade (65) on the first fixed shaft (64) and the second stirring blade (67) on the second fixed shaft (66) can further stir and mix the materials. Step 3. Discharge the stirred materials: Open the baffle plate (73) to make the materials discharged from the blanking groove (71), and the driving motor (1) drives the first spiral blade (61) and the second spiral blade (62) to rotate to discharge all the materials from the blanking groove (71). Step 4. Post-mixing treatment: Conduct quality inspection on the mixed raw materials of the sealing rubber ring to ensure that all raw materials of the sealing rubber ring are within the specified range, and then pack the mixed materials or directly put them into the melting equipment for processing the sealing rubber ring.

10. The mixing method of the raw material mixing device for producing a sealing rubber ring according to claim 9, characterized in that, The drive motor (1) in the third step adopts two modes of forward rotation and reverse rotation. When the first spiral blade (61) cannot completely discharge the raw materials in the mixing material tank (3) by forward rotation, the rotation direction of the first spiral blade (61) is changed to reverse rotation.

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