Feeding device for a rubber extruder

Abstract

The utility model provides a kind of rubber extruder's feeding device, solve the problem that rubber material is easily infiltrated into bearing interior in current rubber feeding process. Still include side pressure roller, it is obliquely arranged in mounting seat rotatably, side pressure roller includes cylinder section and conical section, conical section corresponds the feed inlet, conical section is equipped with spiral rib, the side of conical section close to feed inlet is parallel with the axial line of feeding base;Bearing, it is arranged in mounting seat and is used to cooperate with cylinder section. Conical section directly corresponds feed inlet, is the core area of rubber material extrusion, conveying, here does not install bearing, can avoid in conical section to open bearing installation cavity and assembly gap, completely eliminate the passage of rubber material infiltration bearing from structure;While cooperating with the radial extrusion effect of the spiral rib of conical section push and, further reduce rubber material diffusion to shaft end, double guarantee that bearing is not affected by rubber material solidification or grease mixture, completely avoid bearing " bite dead " risk, guarantee that feeding device is continuously and stably operated.

Description

Technical Field

[0001] This utility model relates to the field of rubber extruder technology, specifically to a feeding device for a rubber extruder. Background Technology

[0002] As a key piece of equipment in the rubber processing industry, the operational stability of the feeding device of a rubber extruder directly determines the rubber material conveying efficiency, the quality of the extruded product, and the overall service life of the equipment. In existing rubber extruder feeding systems, to achieve continuous compaction and pushing of the rubber material, a side pressure roller is usually installed at the feed inlet of the feeding base. This side pressure roller usually adopts an integral cylindrical structure, with both ends rotatably mounted on the mounting base via bearings. With the support of the bearings, the side pressure roller can rotate at high speed and stably, thereby continuously feeding the rubber material into the extruder barrel.

[0003] However, during actual feeding, the rubber compound moves forward axially along the feeding base under the squeezing action of the side pressure roller. Due to the assembly gap between the two ends of the cylindrical side pressure roller and the mounting base, the forward-moving rubber compound easily seeps into the bearing mounting cavity at one end of the side pressure roller through this gap. The rubber compound that seeps into the bearing gradually solidifies under high temperature and pressure, or mixes with the lubricating grease inside the bearing to form a viscous substance, causing the rolling elements of the bearing to seize, ultimately resulting in bearing seizure. This problem not only causes the feeding device to stop, affecting production continuity, but also increases the frequency of bearing replacement and equipment maintenance costs; furthermore, bearing seizure may cause mechanical damage to the side pressure roller shaft end or the mounting base, further shortening the equipment's service life.

[0004] Therefore, optimizing the structural design of the side pressure roller to avoid the problem of rubber material seeping into the bearing and causing seizing during the feeding process has become a technical pain point that urgently needs to be solved in the current rubber extruder feeding device. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this utility model provides a feeding device for a rubber extruder, which solves the problem that rubber material easily seeps into the bearing during the current rubber feeding process.

[0006] The technical solution adopted in this utility model is as follows: A feeding device for a rubber extruder includes a feeding base and a mounting base. The feeding base is provided with a feed inlet and further includes: A side pressure roller is rotatably and inclinedly disposed in the mounting base. The side pressure roller includes a cylindrical section and a conical section. The conical section corresponds to the feed inlet and is provided with a helical ridge. The side of the conical section near the feed inlet is parallel to the axial line of the feeding base. The bearing is housed within the mounting base and is designed to mate with the cylindrical section.

[0007] A return ring is installed at the end of the conical section near the cylindrical section.

[0008] The pitch of the screw thread gradually decreases along the feeding direction.

[0009] The center of the side pressure roller is provided with a cooling channel.

[0010] The bearing includes a No. 1 bearing near one end of the tapered section and a No. 2 bearing away from one end of the tapered section. The No. 1 bearing is a tapered roller bearing and the No. 2 bearing is a self-aligning roller bearing.

[0011] The mounting base is provided with an oil injection hole for mate with the bearing.

[0012] The mounting base is fixed to the feeding base by bolts. The feeding base is provided with a connecting seat. One end of the mounting base is provided with a connecting plate for hinged engagement with the connecting seat.

[0013] The beneficial effects of this utility model are: The side pressure roller adopts a combination structure of cylindrical and conical sections. The side of the conical section near the feed inlet is parallel to the axial line of the feeding base. The conical section directly corresponds to the feed inlet and is the core area for rubber extrusion and conveying. No bearing is installed here, which avoids the need to open bearing mounting cavities and assembly gaps in the conical section. Structurally, it completely eliminates the channel for rubber to seep into the bearing. At the same time, the helical pushing and radial extrusion action of the conical section further reduces the diffusion of rubber to the shaft end. This double protection ensures that the bearing is not affected by rubber solidification or grease mixing, completely avoids the risk of bearing seizure, and ensures continuous and stable operation of the feeding device. Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of the present invention.

[0015] Figure 2 This is a top view of the present invention.

[0016] 1. Feeding base; 2. Mounting seat; 3. Feed inlet; 4. Side pressure roller; 41. Cylindrical section; 42. Conical section; 43. Screw rib; 5. Bearing; 51. Bearing No. 1; 52. Bearing No. 2; 6. Return rubber ring; 7. Cooling channel; 8. Oil injection hole; 9. Connecting seat; 10. Connecting plate. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: In the embodiments, such as Figure 1 , Figure 2 As shown, a feeding device for a rubber extruder includes a feeding base 1 and a mounting base 2. The feeding base 1 is provided with a feed inlet 3, and further includes: Side pressure roller 4 is rotatably inclinedly disposed in mounting base 2. Side pressure roller 4 includes cylindrical section 41 and conical section 42. Conical section 42 corresponds to feed port 3. Conical section 42 is provided with helical rib 43. The side of conical section 42 near feed port 3 is parallel to the axial line of feeding base 1. Bearing 5 is disposed in mounting base 2 and is used to mate with cylindrical section 41.

[0018] The side pressure roller 4 adopts a combination structure of cylindrical section 41 and conical section 42. The side of conical section 42 near the feed inlet 3 is parallel to the axial line of the feeding base 1. Conical section 42 directly corresponds to feed inlet 3 and is the core area for rubber extrusion and conveying. No bearing is installed here, which avoids opening bearing installation cavities and assembly gaps in conical section 42, and completely eliminates the channel for rubber to seep into the bearing from the structure. At the same time, with the pushing and radial extrusion action of the screw ribs 43 of conical section 42, the diffusion of rubber to the shaft end is further reduced. This double protection ensures that the bearing is not affected by rubber solidification or grease mixing, completely avoids the risk of bearing "seizure", and ensures continuous and stable operation of the feeding device.

[0019] In the embodiments, such as Figure 1 As shown, a return ring 6 is installed at one end of the conical section 42 near the cylindrical section 41. The return ring 6 can physically block the rubber material in the transition area between the conical section 42 and the cylindrical section 41, effectively intercepting a small amount of rubber material that may diffuse towards the bearing, preventing the rubber material from seeping into the bearing 5 through the transition gap between the conical section 42 and the cylindrical section 41, further reducing the risk of bearing 5 seizing, improving the stability of equipment operation, and at the same time pushing a small amount of overflowing rubber material back to the feed port 3 or the conveying channel, reducing rubber material waste.

[0020] In the embodiments, such as Figure 1 , Figure 2 As shown, the pitch of the screw thread 43 gradually decreases along the feeding direction. This forms a continuous pressure-increasing channel, ensuring that the rubber compound maintains a stable forward speed during conveying, avoiding backflow or accumulation of the rubber compound due to sudden pressure changes, and further improving feeding uniformity and conveying efficiency.

[0021] In the embodiments, such as Figure 1 As shown, the side pressure roller 4 is provided with a cooling channel 7 at its center. The cooling channel 7 can cool the side pressure roller 4 in real time by introducing a cooling medium (such as cooling water or cooling oil), so as to avoid the side pressure roller 4 from getting too hot due to friction during long-term operation, thereby preventing the rubber material from plasticizing, sticking or aging prematurely due to high temperature when it comes into contact with the side pressure roller 4, and ensuring the smooth conveying of the rubber material and the processing quality.

[0022] In the embodiments, such as Figure 1As shown, the bearing 5 includes a first bearing 51 near one end of the tapered section 42 and a second bearing 52 away from the other end of the tapered section 42. The first bearing 51 is a tapered roller bearing, and the second bearing 52 is a self-aligning roller bearing. The side pressure roller 4 is inclined and generates axial thrust when conveying rubber material. The tapered roller bearing effectively counteracts this axial force, preventing damage to the bearing due to excessive axial load, and simultaneously improving the axial positioning accuracy of the side pressure roller 4. The self-aligning roller bearing has excellent self-aligning performance, compensating for possible coaxiality errors during the installation of the side pressure roller 4, or slight misalignment caused by equipment vibration, preventing local stress concentration due to uneven force distribution, and extending the bearing's service life. The differentiated configuration of the two bearings adapts to the force characteristics of the side pressure roller, balancing axial load bearing capacity and self-aligning performance, ensuring the operational stability of the side pressure roller under inclined installation and high-speed rotation conditions, further reducing equipment failure rate and improving production continuity.

[0023] In the embodiments, such as Figure 1 As shown, the mounting base 2 is provided with an oil injection hole 8 for mating with the bearing 5. The oil injection hole 8 allows operators to conveniently inject grease into the bearing 5 periodically without disassembling the mounting base 2 or the side pressure roller 4, simplifying the lubrication and maintenance process and improving maintenance efficiency.

[0024] In the embodiments, such as Figure 1 , Figure 2 As shown, the mounting base 2 is fixed to the feeding base 1 by bolts. The feeding base is provided with a connecting seat 9, and one end of the mounting base 2 is provided with a connecting plate 10 for hinged engagement with the connecting seat 9. When it is necessary to maintain the components inside the mounting base 2, simply remove the bolts to allow the other end of the mounting base 2 to move away from the feeding base 1, facilitating the disassembly and assembly of various components, improving maintenance efficiency, and reducing downtime.

[0025] Obviously, the above embodiments of this utility model are merely illustrative examples and not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A feeding device for a rubber extruder, comprising a feeding base (1) and a mounting base (2), wherein the feeding base (1) is provided with a feed inlet (3), characterized in that, Also includes: Side pressure roller (4) is rotatably inclined and installed in mounting base (2). The side pressure roller (4) includes a cylindrical section (41) and a conical section (42). The conical section (42) corresponds to the feed inlet (3). The conical section (42) is provided with a helical rib (43). The side of the conical section (42) near the feed inlet (3) is parallel to the axial line of the feeding base (1). The bearing (5) is set in the mounting base (2) and is used to mate with the cylindrical section (41).

2. The feeding device for a rubber extruder as described in claim 1, characterized in that: A return ring (6) is installed at one end of the conical section (42) near the cylindrical section (41).

3. The feeding device for a rubber extruder as described in claim 1, characterized in that: The pitch of the screw thread (43) gradually decreases along the feeding direction.

4. The feeding device for a rubber extruder as described in claim 1, characterized in that: The center of the side pressure roller (4) is provided with a cooling channel (7).

5. The feeding device for a rubber extruder as described in claim 1, characterized in that: The bearing (5) includes a first bearing (51) near one end of the tapered section (42) and a second bearing (52) away from one end of the tapered section (42). The first bearing (51) is a tapered roller bearing and the second bearing (52) is a self-aligning roller bearing.

6. The feeding device for a rubber extruder as described in claim 1, characterized in that: The mounting base (2) is provided with an oil injection hole (8) for cooperating with the bearing (5).

7. The feeding device for a rubber extruder as described in claim 1, characterized in that: The mounting base (2) is fixed to the feeding base (1) by bolts. The feeding base is provided with a connecting seat (9). One end of the mounting base (2) is provided with a connecting plate (10) for hinged engagement with the connecting seat (9).

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