Open type rubber mixing device for processing fluororubber

Abstract

The utility model discloses an open type rubber mixing device for processing fluororubber, which relates to the technical field of fluororubber processing and comprises a bottom plate, support plates are symmetrically mounted on the outer top surface of the bottom plate, and a first rubber mixing roller and a second rubber mixing roller are respectively rotatably mounted between the two support plates. A U-shaped frame is jointly installed on the outer top faces of the two supporting plates through bolts, a medicine adding assembly is arranged on the outer top face of the U-shaped frame, connecting plates are fixed to the outer walls of the front sides of the two supporting plates, and a stirring assembly capable of conducting relative displacement is arranged between the two connecting plates. Through mutual cooperation of the rotating shaft rod, the stirring blades, the U-shaped scraping plate and the circulation channel, a medicine auxiliary agent to be added can be fully and uniformly mixed, and then the medicine auxiliary agent is uniformly added into raw rubber through the round sleeve, the limiting ring and the movable mold; and the condition that the sizing mold product is poor or the product is scrapped due to overhigh shrinkage rate during raw rubber vulcanization caused by non-uniform addition and mixing of the auxiliary agent is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fluororubber processing technology, and in particular to an open-type rubber mixing apparatus for processing fluororubber. Background Technology

[0002] Fluororubber is widely used in the automotive industry due to its high temperature resistance and corrosion resistance. During the processing of fluororubber, chemicals need to be added to it. The order is as follows: calcium oxide, calcium hydroxide mixed with a small amount of carbon black is added to the fluororubber, magnesium oxide and the remaining carbon black are mixed and added to the rubber compound, hydroquinone-N,N-dicinnamyl-1,6-hexamethylenediamine, and tetrabutylammonium hydroxide are added. After the raw rubber passes back and forth between two mixing rollers, the chemicals are mixed onto the raw rubber.

[0003] For example, a Chinese patent discloses an open-type rubber mixing mill for fluororubber processing (publication number CN219359928U), which includes a machine body, a first roller, a second roller, a drive assembly, and an extrusion assembly, with the second roller rotatably connected to the front upper part of the machine body.

[0004] However, the aforementioned publicly available documents demonstrate that the downward movement of the triangular pressure block can compress the rubber compound between the first and second rollers, preventing the compound from constantly jumping and improving mixing efficiency. However, this patent lacks a dosing mechanism, making it difficult to ensure the final effect of the fluororubber during production, thus limiting its practicality. Therefore, those skilled in the art have provided an open-type mixing apparatus for processing fluororubber to address the problems mentioned in the background section. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an open-type rubber mixing apparatus for processing fluororubber, which solves the problem mentioned in the background art that the lack of a dosing mechanism makes it impossible to ensure the effect of fluororubber after mixing during the production and processing process, resulting in low practicality.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: an open-type rubber mixing device for processing fluororubber, comprising a base plate, support plates symmetrically mounted on the outer top surface of the base plate, a first rubber mixing roller and a second rubber mixing roller rotatably mounted between the two support plates, a U-shaped frame jointly mounted on the outer top surface of the two support plates by bolts, a dosing component provided on the outer top surface of the U-shaped frame, a connecting plate fixed on the front outer wall of each of the two support plates, and a toggle component capable of relative displacement provided between the two connecting plates;

[0007] The dosing assembly includes a mixing box fixed to the top surface of a U-shaped frame, a drainage box fixed to the bottom surface of the U-shaped frame, and the mixing box and the drainage box connected to each other by a guide pipe. The mixing box has an elliptical annular cavity inside, and a rotating shaft is rotatably mounted inside the annular cavity. A cylinder is fixedly sleeved at the center of the outer peripheral sidewall of the rotating shaft. Spiral stirring blades are fixed to the outer wall of the cylinder. Two cylinders are fixedly sleeved at both ends of the outer peripheral sidewall of the rotating shaft. U-shaped scrapers are symmetrically arranged and fixed to the outer walls of the two cylinders. The opposite outer walls of the two U-shaped scrapers abut against the inner wall of the annular cavity. A spiral circulation channel is opened inside the drainage box.

[0008] As a further technical solution of this utility model, the actuating assembly includes a bidirectional threaded rod that is rotatably installed between two connecting plates. Both ends of the outer wall of the bidirectional threaded rod are threaded with moving blocks, and actuating rods are fixed on the rear outer walls of the two moving blocks.

[0009] As a further technical solution of this utility model, a guide rod is fixed between the two connecting plates, and the two moving blocks are slidably sleeved on the outer peripheral sidewall of the guide rod. A drive motor is fixedly installed on the outer sidewall of one of the connecting plates, and one end of the bidirectional threaded rod extends rotatably to the outer sidewall of one of the connecting plates and is fixedly connected to the output end of the drive motor.

[0010] As a further technical solution of this utility model, a horizontal plate is fixed between the two support plates and on the front outer wall of the diversion box. A movable module is fixed on the outer bottom surface of the horizontal plate. A limit ring is fixedly installed at the movable end of the movable module. A feed pipe is connected through the outer top surface of the mixing box. A discharge pipe is connected through the outer bottom surface of the diversion box. A circular sleeve is fixed inside the limit ring and at the location corresponding to the discharge pipe. A discharge pipe is connected through the outer bottom surface of the circular sleeve.

[0011] As a further technical solution of this utility model, a second drive motor is fixedly installed on the right outer wall of the mixing box, and one end of the rotating shaft extends to the outside of the mixing box and is fixed to the output end of the second drive motor.

[0012] As a further technical solution of this utility model, a collection frame is provided on the outer top surface of the base plate and located between the two support plates, and a handle is fixed on the rear outer wall of the collection frame.

[0013] As a further technical solution of this utility model, the four corners of the outer top surface of the base plate are provided with through screw holes.

[0014] This invention provides an open-type rubber mixing apparatus for processing fluororubber, which has the following advantages compared with the prior art:

[0015] 1. This design provides an open-type rubber mixing device for processing fluororubber. Through the coordinated operation of a rotating shaft, stirring blades, U-shaped scraper, and circulating channel, the pharmaceutical additives to be added can be fully and uniformly mixed. Then, the pharmaceutical additives are uniformly added to the raw rubber through a circular sleeve, a limiting ring, and a moving mold. This results in high mixing efficiency and good mixing effect between the raw rubber and the additives, avoiding the situation where uneven mixing of additives leads to excessive shrinkage during vulcanization of the raw rubber, resulting in poor molded products or product scrap.

[0016] 2. This design provides an open-type rubber mixing device for processing fluororubber. Through the interaction of a bidirectional threaded rod, a moving block, and a pushing rod, the fluororubber flattened on the first mixing roller can be pushed towards the center, thereby automatically pushing the fluororubber into a ball for repeated extrusion processing. This avoids the problem of high labor intensity for workers caused by the traditional manual method of forming fluororubber into balls using tools. Attached Figure Description

[0017] Figure 1 A first three-dimensional structural schematic diagram of an open rubber mixing apparatus for processing fluororubber;

[0018] Figure 2 This is a second three-dimensional structural schematic diagram of an open rubber mixing apparatus for processing fluororubber;

[0019] Figure 3 This is a first cross-sectional three-dimensional structural diagram of an open rubber mixing apparatus for processing fluororubber.

[0020] Figure 4 This is a schematic diagram of the second cross-sectional three-dimensional structure of an open rubber mixing apparatus for processing fluororubber.

[0021] Figure 5 This is a three-dimensional structural diagram of the dosing component of an open rubber mixing apparatus for processing fluororubber.

[0022] In the picture:

[0023] 1. Base plate; 101. Support plate; 102. First rubber mixing roller; 103. Second rubber mixing roller; 104. U-shaped frame; 105. Connecting plate;

[0024] 2. Dosing assembly; 201. Mixing tank; 202. Drainage box; 203. Guide pipe; 204. Annular cavity; 205. Rotating shaft; 206. Cylinder 1; 207. Cylinder 2; 208. Stirring blade; 209. U-shaped scraper; 210. Circulation channel; 211. Horizontal plate; 212. Moving module; 213. Limiting ring; 214. Feed pipe; 215. Discharge pipe; 216. Circular sleeve; 217. Feed pipe; 218. Drive motor 2;

[0025] 3. Actuating assembly; 301. Bidirectional threaded rod; 302. Moving block; 303. Actuating lever; 304. Guide rod; 305. Drive motor one;

[0026] 4. Collection frame; 401. Screw hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 This utility model provides a technical solution for an open-type rubber mixing apparatus for processing fluororubber: it includes a base plate 1, with support plates 101 symmetrically installed on the outer top surface of the base plate 1. A first rubber mixing roller 102 and a second rubber mixing roller 103 are rotatably installed between the two support plates 101. Each of the four corners of the outer top surface of the base plate 1 has through-hole screw holes 401. By tightening the bolts in the screw holes 401, the base plate 1 can be fixed in the working area, ensuring the stable operation of subsequent equipment while facilitating disassembly and relocation, and providing high flexibility in use. At the same time, the opposite outer walls of the two support plates 101 are respectively provided with a power component that drives the first rubber mixing roller 102 and the second rubber mixing roller 103 to rotate synchronously and a heating component for heating. The power component can drive the first rubber mixing roller 102 and the second rubber mixing roller 103 to rotate synchronously in opposite directions. The heating component can heat the first rubber mixing roller 102 and the second rubber mixing roller 103 to increase their temperature during rubber mixing (the power component and the heating component are existing technologies, and their structural features and working principles are not specifically described or shown in this document).

[0029] A U-shaped frame 104 is bolted to the top surface of two support plates 101 (using a threaded bolt connection for easy disassembly). A dosing assembly 2 is installed on the top surface of the U-shaped frame 104. The dosing assembly 2 includes a mixing tank 201 fixed to the top surface of the U-shaped frame 104 and a diversion box 202 fixed to the bottom surface of the U-shaped frame 104. The mixing tank 201 and the diversion box 202 are interconnected by a guide pipe 203 (an electrically controlled valve is installed on the guide pipe 203 to open and close the mixing tank 201 and the diversion box 202). The mixing tank 201 has an elliptical annular cavity 204 inside (the elliptical design facilitates subsequent material feeding). A rotating shaft 205 is rotatably mounted inside the annular cavity 204. The center of the outer peripheral sidewall of the rotating shaft 205 is located at... A cylindrical first 206 is fixedly sleeved at the mixing box 201. A spiral stirring blade 208 is fixedly mounted on the outer wall of the cylindrical first 206. Two cylindrical second 207s are fixedly sleeved at both ends of the outer side wall of the rotating shaft 205. U-shaped scrapers 209 are symmetrically arranged and fixedly mounted on the outer walls of the two cylindrical second 207s. The opposite outer side walls of the two U-shaped scrapers 209 abut against the inner side wall of the annular cavity 204. A spiral circulating channel 210 is opened inside the diversion box 202. A drive motor 218 is fixedly installed on the right outer wall of the mixing box 201. One end of the rotating shaft 205 extends to the outside of the mixing box 201 and is fixed to the output end of the drive motor 218. A feed pipe 214 is connected through the top surface of the mixing box 201, and a discharge pipe 215 is connected through the bottom surface of the diversion box 202. In use, first open the electrically controlled valve on the feed pipe 214 to sequentially add the drug excipients into the annular cavity 204. Then, control and start the drive motor 218 to drive the rotating shaft 205 to rotate the cylinder 206 and cylinder 207 in the annular cavity 204, so that the stirring blades and U-shaped scraper 209 can fully mix the various drug excipients. After that, open the guide pipe 203 to transport the mixed drug excipients into the diversion box 202, where they are further mixed evenly along the circulation channel 210. Finally, open the electrically controlled valve on the discharge pipe 215 to discharge the drug excipients.

[0030] A horizontal plate 211 is fixed between two support plates 101 and on the front outer wall of the diversion box 202. A movable module 212 is fixed to the outer bottom surface of the horizontal plate 211. A limit ring 213 is fixedly installed at the moving end of the movable module 212. A feed pipe 214 is connected through the outer top surface of the mixing box 201, and a discharge pipe 215 is connected through the outer bottom surface of the diversion box 202. A circular sleeve 216 is fixed inside the limit ring 213 and corresponding to the discharge pipe 215. A discharge pipe 217 is connected to the outer bottom surface of the circular sleeve 216. During discharge, the movable module 212 is first controlled and started to move horizontally left and right, thereby driving the limit ring 213 to move the circular sleeve 216 directly below the discharge pipe 215. Then, the drug adjuvant is discharged into the circular sleeve 216 through the discharge pipe 215. During the process, the position detector (a prior art technology, connected to the controller signal, which can provide real-time prompts to the operator regarding the amount of drug excipients being delivered) installed inside the sleeve 216 is used to detect the amount of drug excipients being delivered, preventing excessive delivery and overflow from the sleeve 216. Then, the moving module 212 is restarted to move the sleeve 216 laterally (during which the discharge pipe 215 is closed). During the lateral movement, the electrically controlled valve on the discharge pipe 217 is opened to evenly sprinkle the drug excipients onto the raw rubber between the first mixing roller 102 and the second mixing roller 103. This results in a high mixing efficiency and good mixing effect between the raw rubber and the excipients, avoiding excessive shrinkage during vulcanization of the raw rubber due to uneven addition and mixing of the excipients, which could lead to poor molded products or product scrap.

[0031] A connecting plate 105 is fixed to the front outer wall of each of the two support plates 101. A toggle assembly 3 capable of relative displacement is provided between the two connecting plates 105. The toggle assembly 3 includes a bidirectional threaded rod 301 that is rotatably installed between the two connecting plates 105. Moving blocks 302 are threadedly sleeved at both ends of the outer wall of the bidirectional threaded rod 301. A toggle rod 303 is fixed to the rear outer wall of each of the two moving blocks 302. A guide rod 304 is fixed between the two connecting plates 105. The two moving blocks 302 are slidably sleeved on the outer wall of the guide rod 304. A drive motor 305 is fixedly installed on the outer wall of one of the connecting plates 105. One end of the bidirectional threaded rod 301 extends rotatably to the outer wall of one of the connecting plates 105 and is fixedly connected to the output end of the drive motor 305. In use, the drive motor 305 is controlled and started to drive the bidirectional threaded rod 301 to rotate, which in turn drives the two moving blocks 302 to move relatively close to or away from each other with the assistance of the guide rod 304. This moves the already crushed fluororubber towards the center to form a ball, which is then repeatedly crushed. This allows the device to automatically feed the fluororubber balls into the space between the first mixing roller 102 and the second mixing roller 103, avoiding the problem of high fatigue for workers caused by manual ball forming.

[0032] A collection frame 4 is provided on the outer top surface of the base plate 1 and between the two support plates 101. A handle is fixed on the rear outer wall of the collection frame 4. After the fluororubber is processed, the handle is held to pull the collection frame 4 out of the base plate 1 and the fluororubber waste collected by the collection frame 4 is processed.

[0033] The working principle of this utility model is as follows: First, fix the device in the working area, then put the drug excipients into the annular cavity 204 along the feed pipe 214 in sequence, then start the drive motor 218 to drive the rotating shaft 205 to drive the stirring blades and U-shaped scraper 209 to fully stir and mix the various drug excipients, then open the guide pipe 203 to transport the mixed drug excipients into the diversion box 202, and further mix them evenly along the circulation channel 210.

[0034] Simultaneously, the moving module 212 is activated to move laterally left and right, thereby driving the limiting ring 213 to move the sleeve 216 directly below the discharge pipe 215. Then, the discharge pipe 215 is opened to discharge the drug additive into the sleeve 216. After that, the moving module 212 is activated again to drive the sleeve 216 to move laterally, and the discharge pipe 217 is opened to evenly sprinkle the drug additive on the raw rubber between the first rubber mixing roller 102 and the second rubber mixing roller 103.

[0035] At the same time, the drive motor 305 is started to drive the bidirectional threaded rod 301 to rotate, which in turn drives the two moving blocks 302 to move stably relative to each other, pushing the fluororubber flattened on the first rubber mixing roller 102 towards the center and gathering it into a ball again so that it can be repeatedly crushed, and so on in a continuous cycle.

[0036] Finally, grasp the handle and pull the collection box 4 out of the base plate 1 to process the fluororubber waste collected in the collection box 4.

[0037] It should be noted that the moving mold and the electrically controlled valve are existing technologies, and their working principles will not be described in this article. All electrical components mentioned in this article are electrically connected to the controller and the power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. The power supply is also common knowledge in the field, so the control method and circuit connection will not be explained in detail.

[0038] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. An open-type rubber mixing apparatus for processing fluororubber, characterized in that, Includes a base plate (1), on which support plates (101) are symmetrically mounted on the outer top surface. A first rubber mixing roller (102) and a second rubber mixing roller (103) are rotatably mounted between the two support plates (101). A U-shaped frame (104) is bolted to the outer top surface of the two support plates (101). A dosing assembly (2) is provided on the outer top surface of the U-shaped frame (104). A connecting plate (105) is fixed to the front outer wall of both support plates (101). A toggle assembly (3) capable of relative displacement is provided between the two connecting plates (105). The dosing assembly (2) includes a mixing box (201) fixed to the top surface of a U-shaped frame (104), a drainage box (202) fixed to the bottom surface of the U-shaped frame (104), and the mixing box (201) and the drainage box (202) connected to each other by a guide pipe (203). An elliptical annular cavity (204) is formed inside the mixing box (201), and a rotating shaft (205) is rotatably mounted inside the annular cavity (204). The center of the outer peripheral sidewall of the rotating shaft (205) is located at... A cylindrical first (206) is fixedly sleeved, and a spiral stirring blade (208) is fixedly attached to the outer wall of the cylindrical first (206). Two cylindrical second (207) are fixedly sleeved at both ends of the outer peripheral sidewall of the rotating shaft (205). U-shaped scrapers (209) are symmetrically arranged and fixed to the outer walls of the two cylindrical second (207). The opposite outer sidewalls of the two U-shaped scrapers (209) abut against the inner sidewall of the annular cavity (204). A spiral circulation channel (210) is opened inside the diversion box (202).

2. The open-type rubber mixing apparatus for processing fluororubber according to claim 1, characterized in that, The actuation assembly (3) includes a bidirectional threaded rod (301) that is rotatably mounted between two connecting plates (105). Both ends of the outer wall of the bidirectional threaded rod (301) are threaded with moving blocks (302), and actuation rods (303) are fixed on the rear outer walls of the two moving blocks (302).

3. An open-type rubber mixing apparatus for processing fluororubber according to claim 2, characterized in that, A guide rod (304) is fixed between the two connecting plates (105). The two moving blocks (302) are slidably sleeved on the outer wall of the guide rod (304). A drive motor (305) is fixedly installed on the outer wall of one of the connecting plates (105). One end of the bidirectional threaded rod (301) extends rotatably to the outer wall of one of the connecting plates (105) and is fixedly connected to the output end of the drive motor (305).

4. An open-type rubber mixing apparatus for processing fluororubber according to claim 1, characterized in that, A horizontal plate (211) is fixed between the two support plates (101) and on the front outer wall of the diversion box (202). A movable module (212) is fixed on the bottom surface of the horizontal plate (211). A limit ring (213) is fixedly installed at the moving end of the movable module (212). A feed pipe (214) is connected through the top surface of the mixing box (201). A discharge pipe (215) is connected through the bottom surface of the diversion box (202). A round sleeve (216) is fixed inside the limit ring (213) and at the location corresponding to the discharge pipe (215). A discharge pipe (217) is connected through the bottom surface of the round sleeve (216).

5. An open-type rubber mixing apparatus for processing fluororubber according to claim 1, characterized in that, A second drive motor (218) is fixedly installed on the right outer wall of the mixing box (201). One end of the rotating shaft (205) extends to the outside of the mixing box (201) and is fixed to the output end of the second drive motor (218).

6. An open-type rubber mixing apparatus for processing fluororubber according to claim 1, characterized in that, A collection frame (4) is provided on the outer top surface of the base plate (1) and between the two support plates (101), and a handle is fixed on the rear outer wall of the collection frame (4).

7. An open-type rubber mixing apparatus for processing fluororubber according to claim 1, characterized in that, The bottom plate (1) has through screw holes (401) at all four corners of its outer top surface.

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