High-temperature-resistant low-pressure-change silicone rubber kneading equipment

Abstract

The utility model discloses high-temperature-resistant low-pressure-change silicone rubber kneading equipment, which relates to the technical field of high-temperature mixed silicone rubber and comprises a base, a box body, a feeding mechanism, a stirring mechanism and a swinging mechanism, a sliding groove is arranged on the upper surface of the base, the box body is rotatably arranged in the sliding groove, and a heater is arranged on the inner wall of the box body. The feeding mechanism is arranged at the top of the box body, the stirring mechanism is arranged on the inner side and the top of the box body and is used for uniformly mixing various raw materials, and the swinging mechanism is arranged on one side of the base and is used for driving the box body to perform reciprocating swinging operation. Through the rotation operation of the first stirring blade and the second stirring blade at different rotating speeds and the combination of the swinging design of the box body, glue materials are fully mixed in the inner cavity, dead angles of the glue materials are avoided, the mixing uniformity is greatly improved, the stirring mechanism and the swinging mechanism are simultaneously driven by the second motor, and multifunctional linkage is realized through the gear set and the gearbox; and the energy consumption is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature compounding silicone rubber technology, specifically a high-temperature and low-pressure variable silicone rubber kneading equipment and its preparation method. Background Technology

[0002] Silicone rubber is a linear polysiloxane with a silicon-oxygen main chain and organic side chains. Due to its low compression set over a wide temperature range, it is widely used in the manufacture of gaskets, washers, and O-rings. Kneading equipment is frequently used in the production of silicone rubber. This equipment is designed to mix and melt the raw materials for silicone rubber production. Existing kneading equipment typically includes a stirring mechanism and a heating device inside a tank. When kneading is required, the raw materials are placed in the feeding hopper, and the heating and driving devices are activated to begin the kneading operation. However, the stirring mechanisms in most existing kneading equipment stir the materials from only one direction, making it difficult for the materials to make sufficient contact. This can easily lead to material accumulation and incomplete mixing during the stirring process, failing to effectively knead the raw materials.

[0003] Based on this, a high-temperature and low-pressure variable silicone rubber kneading device and its preparation method are provided, which can eliminate the drawbacks of existing technical solutions. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature, low-pressure silicone rubber kneading device to solve the problem of the single mixing method in existing equipment in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-temperature and low-pressure silicone rubber kneading device includes a base and a housing. The upper surface of the base is provided with a sliding groove. The housing is rotatably disposed inside the sliding groove. The housing has a cylindrical inner cavity. A discharge port is provided on one side of the housing. A heater is provided on the inner wall of the housing.

[0007] It also includes a feeding mechanism, a stirring mechanism, and a swinging mechanism. The feeding mechanism is located at the top of the box and is used to perform preliminary crushing operations on materials with larger volumes. The stirring mechanism is located on the inside and top of the box and is used to mix multiple raw materials evenly. The swinging mechanism is located on one side of the base and is used to drive the box to perform reciprocating swinging operations.

[0008] The feeding mechanism includes a feeding box fixedly installed on the top of the box body. The feeding box is connected to the inner cavity. A rotating rod is rotatably installed inside the feeding box. One end of the rotating rod extends to the outside of the feeding box and is fixedly connected to the output end of the first motor. Several crushing blades are evenly arranged on the outside of the rotating rod. A feeding port is provided on one side of the feeding box.

[0009] Preferably, the stirring mechanism includes a sleeve rotatably connected to the top of the housing, one end of the sleeve extending to the outside of the housing and connected to the drive assembly, the other end of the sleeve extending to the inside of the housing and fixedly connected to a plurality of connecting rods, a first stirring blade fixedly disposed at the bottom of the connecting rods, a stirring shaft rotatably disposed inside the sleeve, a second stirring blade fixedly disposed on the outer wall of the stirring shaft, an annular block fixedly disposed on the bottom wall of the housing, the annular block being rotatably connected to the stirring shaft, and the bottom of the first stirring blade being connected to the annular block through a scraping assembly.

[0010] Preferably, the drive assembly includes an L-shaped bracket fixedly mounted on one side of the base, a second motor fixedly mounted on the L-shaped bracket, a first gear fixedly connected to the output end of the second motor, a second gear meshing below the first gear, a first transmission wheel fixedly mounted on one side of the second gear, a second transmission wheel mounted above the first transmission wheel, the first and second transmission wheels connected by a transmission belt, a transmission rod fixedly connected to one side of the second transmission wheel, a first bevel gear fixedly mounted on the transmission rod, the transmission rod connected to the housing via a bracket, a second bevel gear meshing on one side of the first bevel gear, the second bevel gear rotatably connected to the upper surface of the housing via a gear shaft, a second bevel gear, a third gear, and a fourth gear fixedly mounted sequentially from bottom to top on the gear shaft, a fifth gear fixedly mounted on the outer wall of the sleeve, the fifth gear meshing with the fourth gear, a sixth gear fixedly mounted on the outer wall of the stirring shaft, the sixth gear meshing with the third gear, and the outer diameter of the third gear being larger than the outer diameter of the fourth gear.

[0011] Preferably, the scraping assembly includes a scraper fixedly disposed at the bottom of the first stirring blade, and a plurality of the scrapers are connected by a rotating block, the rotating block being rotatably disposed on the outside of the annular block.

[0012] Preferably, the swing mechanism includes a gearbox connected to the other side of the output end of the second motor. The output end of the gearbox is fixedly connected to a connecting shaft. A turntable is fixedly provided at the end of the connecting shaft. A limit rod is fixedly provided on the side of the turntable away from the second motor. A support shaft is fixedly provided at the bottom of the housing. The support shaft is rotatably connected to the base. One end of the support shaft extends to the outside of the housing and is fixedly connected to a support plate. The support plate is rotatably connected to the base. The support plate is fixedly connected to the outer surface of the housing. A limit groove is formed on the surface of the support plate. The turntable is movably connected to the limit groove through the limit rod.

[0013] Preferably, the first transmission wheel and the axis of the support shaft are on the same horizontal line.

[0014] Preferably, the shapes and styles of the first stirring blade and the second stirring blade are compatible.

[0015] Preferably, the bottom of the box body cross-section is set as semi-circular, and the cross-sectional shape of the slide groove is adapted to the swing trajectory of the box body.

[0016] Preferably, a controller is fixedly mounted on one side of the base.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This high-temperature, low-pressure silicone rubber kneading equipment utilizes the different rotation speeds of the first and second stirring blades in the mixing mechanism, combined with the oscillating design of the chamber, to ensure thorough mixing of the rubber material within the inner cavity. This avoids dead zones in the rubber material and significantly improves mixing uniformity. A scraper is installed at the bottom of the chamber to effectively prevent rubber material accumulation and extend the equipment's service life. A feeding mechanism is also included, where the crushing blades pre-crush lumpy materials during the feeding stage, reducing the burden on subsequent mixing and improving mixing efficiency. A second motor simultaneously drives the stirring and oscillating mechanisms, achieving multi-functional linkage through gear sets and a gearbox, effectively reducing energy consumption. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of one side of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure on the other side of this utility model.

[0021] Figure 3 This is a schematic diagram of the internal structure of the present invention from the right side.

[0022] Figure 4 This is a frontal view of the internal structure of this utility model.

[0023] Figure 5 This is a schematic diagram of the stirring mechanism of this utility model.

[0024] Figure 6 This is a schematic diagram of the swing mechanism of this utility model.

[0025] Figure 7 This is a schematic diagram of the structure of the box body after rotation according to this utility model.

[0026] Reference numerals in the attached drawings: Base 101, Box 102, Slide 103, Inner cavity 104, Discharge port 105, Heater 106, Controller 107, Feeding mechanism 200, Feed box 201, Rotating rod 202, Crushing blade 203, Feed port 204, Stirring mechanism 300, Sleeve 301, Connecting rod 302, First stirring blade 303, Stirring shaft 304, Second stirring blade 305, L-shaped bracket 306, First gear 307, Second gear 308, Transmission belt 309, Transmission rod 310, First bevel gear 311, Second bevel gear 312, Third gear 313, Fourth gear 314, Fifth gear 315, Sixth gear 316, Scraper 317, Rotating block 318, Swinging mechanism 400, Gearbox 401, Connecting shaft 402, Turntable 403, Limiting rod 404, Support shaft 405, Support plate 406, Limiting groove 407. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] In this embodiment, as Figures 1-7 As shown, a high-temperature and low-pressure silicone rubber kneading device includes a base 101 and a housing 102. A groove 103 is provided on the upper surface of the base 101. The housing 102 is rotatably disposed inside the groove 103. A cylindrical inner cavity 104 is provided inside the housing 102, which rotates in conjunction with a first stirring blade 303 and a second stirring blade 305. A discharge port 105 is provided on one side of the housing 102, which can be connected to a pump or a screw conveyor to assist in feeding. A heater 106 is provided on the inner wall of the housing 102 to facilitate heating to a set temperature for heat treatment. The heat treatment temperature is 160-180℃ and the heat treatment time is 60-90 minutes, which matches the temperature resistance of silicone rubber and facilitates the heating of the rubber material inside the housing 102. A protective layer is provided on the side of the heater 106 near the stirring blade to prevent the heater 106 from being scraped during stirring. A temperature sensor is also provided inside the housing 102 for real-time monitoring of the rubber material temperature.

[0029] It also includes a feeding mechanism 200, a stirring mechanism 300, and a swinging mechanism 400. The feeding mechanism 200 is located on the top of the box 102 and is used for preliminary crushing of materials with large volume. The stirring mechanism 300 is located on the inside and top of the box 102 and is used to mix multiple raw materials evenly. The swinging mechanism 400 is located on one side of the base 101 and is used to drive the box 102 to perform reciprocating swinging operation. Before using a high temperature and low pressure silicone rubber kneading device, check whether the device can be used normally, and then inject the raw materials into the box 102 to put the device into the ready-to-use state.

[0030] The feeding mechanism 200 includes a feeding box 201 fixedly installed on the top of the box 102. The feeding box 201 is connected to the inner cavity 104. A rotating rod 202 is rotatably installed inside the feeding box 201. One end of the rotating rod 202 extends to the outside of the feeding box 201 and is fixedly connected to the output end of the first motor. When the first motor is started, the rotating rod 202 and the crushing blades 203 are rotated to realize the crushing operation of the material. Several crushing blades 203 are evenly arranged on the outside of the rotating rod 202. A feeding port 204 is provided on one side of the feeding box 201. A spare feeding port is also provided on one side of the top of the box 102. When there is no need to perform preliminary crushing operation on the material, the raw material can be injected into the box 102 through the spare feeding port. Sealing caps are provided at the feeding port 204, the spare feeding port and the discharge port 105 to increase the sealing effect.

[0031] Among them, such as Figures 2-7 As shown, the stirring mechanism 300 includes a sleeve 301 rotatably connected to the top of the housing 102. One end of the sleeve 301 extends to the outside of the housing 102 and is connected to the drive assembly, so that the first stirring blade 303 and the second stirring blade 305 rotate at different speeds, thereby stirring the raw materials and improving the stirring effect. The other end of the sleeve 301 extends to the inside of the housing 102 and is fixedly connected to several connecting rods 302. The bottom of the connecting rods 302 is fixedly provided with the first stirring blade 303. The inside of the sleeve 301 is rotatably provided with a stirring shaft 304. The outer wall of the stirring shaft 304 is fixedly provided with the second stirring blade 305, so that the various raw materials can be mixed more thoroughly. An annular block is fixedly provided on the bottom wall of the housing 102. The annular block is rotatably connected to the stirring shaft 304, which provides support for the stirring shaft 304 and increases the connection stability. The bottom of the first stirring blade 303 is connected to the annular block through a scraping assembly to prevent the adhesive from accumulating at the bottom of the housing 102.

[0032] Among them, such as Figures 2-7As shown, the drive assembly includes an L-shaped bracket 306 fixedly mounted on one side of the base 101. A second motor is fixedly mounted on the L-shaped bracket 306, which drives the transmission belt 309 and the turntable 403 to rotate simultaneously, thus saving resources and ensuring the normal operation of the stirring mechanism 300 and the oscillating mechanism 400. A first gear 307 is fixedly connected to the output end of the second motor. A second gear 308 is meshed below the first gear 307. A first transmission wheel is fixedly mounted on one side of the second gear 308, and a second transmission wheel is mounted above the first transmission wheel. The transmission wheel has a raised edge to prevent the transmission belt 309 from rotating. 9. Lateral slippage: The first and second transmission wheels are connected by a transmission belt 309. The transmission belt 309 is made of a highly elastic material, which allows it to automatically adjust tension during oscillation to adapt to slight angle changes. The shape and style of the transmission wheels and transmission belt 309 can be adjusted according to actual needs to limit the oscillation angle of the housing 102 and the width of the transmission belt 309. For example, the oscillation angle of the housing 102 can be controlled to ±15° by the gearbox 401 to reduce the risk of transmission belt 309 deviation and ensure that the oscillation of the transmission belt 309 will not affect the connecting shaft 402. A transmission rod 3 is fixedly connected to one side of the second transmission wheel. 10. A first bevel gear 311 is fixedly mounted on the transmission rod 310. The transmission rod 310 is connected to the housing 102 via a bracket, so that the transmission belt 309, the transmission wheel, and the bevel gear set swing synchronously with the housing 102, keeping the relative positions between the drive components unchanged and preventing the transmission belt 309 from loosening due to the swing of the housing 102, thus providing a supporting effect. A second bevel gear 312 is meshed on one side of the first bevel gear 311. The second bevel gear 312 is rotatably connected to the upper surface of the housing 102 via a gear shaft, enabling power to be transmitted to the third gear 313 and the fourth gear 314. The gear shaft is fixed sequentially from bottom to top. The sleeve 301 is equipped with a second bevel gear 312, a third gear 313, and a fourth gear 314. A fifth gear 315 is fixedly installed on the outer wall of the sleeve 301, and the fifth gear 315 meshes with the fourth gear 314. A sixth gear 316 is fixedly installed on the outer wall of the stirring shaft 304, and the sixth gear 316 meshes with the third gear 313. Through the mutual cooperation between the gear sets, both the first stirring blade 303 and the second stirring blade 305 can achieve the rotation effect. The outer diameter of the third gear 313 is larger than the outer diameter of the fourth gear 314, so as to adjust the rotation speed of the first stirring blade 303 and the second stirring blade 305.

[0033] Among them, such as Figure 4 and Figure 5 As shown, the scraping assembly includes a scraper 317 fixedly disposed at the bottom of the first stirring blade 303. Several scrapers 317 are connected by a rotating block 318. The rotating block 318 is rotatably disposed on the outside of the annular block to perform scraping operation on the bottom of the box 102, so as to avoid the adhesive material from accumulating at the bottom of the box 102 for a long time.

[0034] Among them, such as Figures 3-7 As shown, the swing mechanism 400 includes a gearbox 401 connected to the other side of the output end of the second motor to reduce the rotational speed of the connecting shaft 402, thereby adjusting the swing amplitude of the housing 102 and preventing the swing frequency from being too fast, which could cause problems in the operation of the equipment. The output end of the gearbox 401 is fixedly connected to the connecting shaft 402, and a turntable 403 is fixedly installed at the end of the connecting shaft 402. A limit rod 404 is fixedly installed on the side of the turntable 403 away from the second motor. A support shaft 405 is fixedly installed at the bottom of the housing 102, and the support shaft 405 is rotatably connected to the base 101. The support shaft 405 serves as the pivot point for the housing 102. The center of the moving circle, one end of the support shaft 405 extends to the outside of the box 102 and is fixedly connected to the support plate 406. The support plate 406 is rotatably connected to the base 101 and fixedly connected to the outer surface of the box 102. A limit groove 407 is opened on the surface of the support plate 406. The size of the limit groove 407 matches the movement trajectory of the limit rod 404. The turntable 403 is movably connected to the limit groove 407 through the limit rod 404. The turntable 403 is driven to rotate through the connecting shaft 402, so that the limit rod 404 can move inside the limit groove 407, thereby driving the support plate 406 and the box 102 to rotate.

[0035] Among them, such as Figure 3 As shown, the first transmission wheel and the axis of the support shaft 405 are on the same horizontal line, so that the transmission belt 309 can swing synchronously with the housing 102, ensuring the normal operation of the equipment. The swing trajectory of the transmission belt 309 is consistent with the rotation center of the transmission wheel, thereby greatly reducing the lateral offset of the transmission belt 309 and preventing it from detaching.

[0036] Among them, such as Figure 3 and Figure 4 As shown, the shapes of the first stirring blade 303 and the second stirring blade 305 are matched. The shapes of the first stirring blade 303 and the second stirring blade 305 can be adjusted according to actual needs to increase the mixing efficiency.

[0037] Among them, such as Figure 4 As shown, the bottom of the cross-section of the box 102 is set as semi-circular, and the cross-sectional shape of the slide groove 103 is adapted to the swing trajectory of the box 102, so that the box 102 can swing smoothly, increase the connection stability, and avoid component interference.

[0038] Among them, such as Figure 1 As shown, a controller 107 is fixedly installed on one side of the base 101. The controller 107 is electrically connected to the first motor and the second motor. The controller 107 is connected to the electrical components through cables, so that the controller 107 can output commands to ensure the normal operation of the equipment.

[0039] Before use, first check that all parts of the equipment are intact and free from looseness or wear. Then, begin the raw material feeding operation. If the raw material is in block form or has a large volume, feed it into the feed box 201 through the feed inlet 204. Start the first motor to drive the crushing blades 203 for pre-crushing. If the raw material is in powder or liquid form, it can be fed directly through the spare feed inlet. After feeding, close the sealing cover and start the stirring mechanism 300. The second motor drives the first gear 307 and the second gear 308 to mesh and transmit power, thereby driving the transmission belt 309 to rotate. This allows the third gear 313 and the fourth gear 314 to rotate in conjunction with the bevel gear set, causing the sleeve 30 to rotate. 1 and the stirring shaft 304 can rotate at different speeds, so that the first stirring blade 303 and the second stirring blade 305 rotate at different speeds and mix for a period of time until the rubber material initially forms a ball. Then, other raw materials are added in batches until the rubber material forms a ball again. During the operation of the stirring mechanism 300, the oscillating mechanism 400 starts synchronously. The second motor drives the turntable 403 to rotate at a slower speed through the gearbox 401, so that the limit rod 404 can slide in the limit groove 407, thereby driving the box 102 to oscillate back and forth, enhancing the mixing effect. After the stirring operation is completed, the rubber material is discharged through the discharge port 105 in conjunction with other auxiliary feeding structures.

[0040] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A high-temperature and low-pressure silicone rubber kneading device, comprising a base (101) and a housing (102), wherein a groove (103) is provided on the upper surface of the base (101), the housing (102) is rotatably disposed inside the groove (103), a cylindrical inner cavity (104) is provided inside the housing (102), a discharge port (105) is provided on one side of the housing (102), and a heater (106) is provided on the inner wall of the housing (102); Its features are, It also includes a feeding mechanism (200), which is located on the top of the box (102) and is used to perform preliminary crushing operation on materials with large volume; A stirring mechanism (300) is provided on the inside and top of the housing (102) for uniformly mixing various raw materials; A swing mechanism (400) is provided on one side of the base (101) and is used to drive the box (102) to perform a reciprocating swing operation. The feeding mechanism (200) includes a feeding box (201) fixedly installed on the top of the box body (102). The feeding box (201) is connected to the inner cavity (104). A rotating rod (202) is rotatably installed inside the feeding box (201). One end of the rotating rod (202) extends to the outside of the feeding box (201) and is fixedly connected to the output end of the first motor. A plurality of crushing blades (203) are evenly arranged on the outside of the rotating rod (202). A feeding port (204) is provided on one side of the feeding box (201).

2. The high-temperature, low-pressure silicone rubber kneading device according to claim 1, characterized in that, The stirring mechanism (300) includes a sleeve (301) rotatably connected to the top of the housing (102). One end of the sleeve (301) extends to the outside of the housing (102) and is connected to the drive assembly. The other end of the sleeve (301) extends to the inside of the housing (102) and is fixedly connected to a plurality of connecting rods (302). A first stirring blade (303) is fixedly provided at the bottom of the connecting rods (302). A stirring shaft (304) is rotatably provided inside the sleeve (301). A second stirring blade (305) is fixedly provided on the outer wall of the stirring shaft (304). An annular block is fixedly provided on the bottom wall of the housing (102). The annular block is rotatably connected to the stirring shaft (304). The bottom of the first stirring blade (303) is connected to the annular block through a scraping assembly.

3. The high-temperature, low-pressure silicone rubber kneading device according to claim 2, characterized in that, The drive assembly includes an L-shaped bracket (306) fixedly mounted on one side of the base (101). A second motor is fixedly mounted on the L-shaped bracket (306). A first gear (307) is fixedly connected to the output end of the second motor. A second gear (308) is meshed below the first gear (307). A first transmission wheel is fixedly mounted on one side of the second gear (308). A second transmission wheel is mounted above the first transmission wheel. The first and second transmission wheels are connected by a transmission belt (309). A transmission rod (310) is fixedly connected to one side of the second transmission wheel. A first bevel gear (311) is fixedly mounted on the transmission rod (310). The transmission rod (310) is connected to the housing (102) via the bracket. The first bevel gear (311) is connected to a second bevel gear (312) on one side. The second bevel gear (312) is rotatably connected to the upper surface of the housing (102) through a gear shaft. The second bevel gear (312), the third gear (313), and the fourth gear (314) are fixedly installed on the gear shaft from bottom to top. The fifth gear (315) is fixedly installed on the outer wall of the sleeve (301) and meshes with the fourth gear (314). The sixth gear (316) is fixedly installed on the outer wall of the stirring shaft (304) and meshes with the third gear (313). The outer diameter of the third gear (313) is larger than that of the fourth gear (314).

4. The high-temperature, low-pressure silicone rubber kneading device according to claim 3, characterized in that, The scraping assembly includes a scraper (317) fixedly disposed at the bottom of the first stirring blade (303), and a plurality of the scrapers (317) are connected by a rotating block (318), which is rotatably disposed on the outside of the annular block.

5. The high-temperature, low-pressure silicone rubber kneading equipment according to claim 4, characterized in that, The swing mechanism (400) includes a gearbox (401) connected to the other side of the output end of the second motor. The output end of the gearbox (401) is fixedly connected to a connecting shaft (402). A turntable (403) is fixedly provided at the end of the connecting shaft (402). A limit rod (404) is fixedly provided on the side of the turntable (403) away from the second motor. A support shaft (405) is fixedly provided at the bottom of the housing (102). The support shaft (405) is rotatably connected to the base (101). One end of the support shaft (405) extends to the outside of the housing (102) and is fixedly connected to a support plate (406). The support plate (406) is rotatably connected to the base (101). The support plate (406) is fixedly connected to the outer surface of the housing (102). A limit groove (407) is provided on the surface of the support plate (406). The turntable (403) is movably connected to the limit groove (407) through the limit rod (404).

6. The high-temperature, low-pressure silicone rubber kneading device according to claim 5, characterized in that, The first transmission wheel and the axis of the support shaft (405) are on the same horizontal line.

7. The high-temperature, low-pressure silicone rubber kneading device according to claim 6, characterized in that, The shapes and styles of the first stirring blade (303) and the second stirring blade (305) are compatible.

8. The high-temperature, low-pressure silicone rubber kneading device according to claim 7, characterized in that, The bottom of the cross-section of the box (102) is set as semi-circular, and the cross-sectional shape of the slide (103) is adapted to the swing trajectory of the box (102).

9. A high-temperature, low-pressure silicone rubber kneading device according to claim 8, characterized in that, A controller (107) is fixedly installed on one side of the base (101).

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