Planetary gear transmission extrusion masticator for ethylene propylene diene monomer tube

Abstract

The utility model relates to the technical field of rubber tubes, and discloses a planetary gear transmission extrusion masticator for an ethylene propylene diene monomer tube, which comprises a conveying box, a driving box mounted on the surface of the rear end of the conveying box, a rotating motor I mounted in the center of the outer end of the driving box, and an extrusion nozzle attached to the surface of the front end of the conveying box, a discharging seat is installed on the surface of the upper end of the conveying box, a stirring box is connected to the upper end of the discharging seat, a second rotating motor is installed in the center of the upper end of the stirring box, a driving fluted disc in a driving box is in meshing transmission with a plurality of driven fluted discs in an inner gear ring, and therefore a conveying auger and a plurality of extrusion rollers can work cooperatively; the multiple extrusion rollers conduct multi-directional extrusion and kneading on the raw materials around the conveying auger, so that the molecular structure in the rubber raw materials is more uniform, and the physical performance of a rubber pipe is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to rubber pipe technical field, concretely is a kind of extrusion kneader based on planetary gear drive for ethylene-propylene-diene rubber pipe. BACKGROUND

[0002] In the field of rubber pipe production, ethylene-propylene-diene rubber pipe has been widely used in many industrial and civilian scenarios due to its excellent aging resistance, ozone resistance, chemical corrosion resistance and good electrical insulation performance, such as automobile manufacturing, construction engineering, electronic and electrical industries, however, the existing ethylene-propylene-diene rubber pipe production equipment and technology still have some problems to be solved.

[0003] Traditional rubber pipe production equipment mostly uses simple single-shaft stirring and single extrusion method in the stirring and kneading process of rubber raw materials, which makes it difficult to achieve sufficient stirring of rubber raw materials, resulting in uneven mixing of various components inside the raw materials, leading to inconsistent physical properties of the produced rubber pipe, and easy to appear local damage and other problems in use, and the single extrusion method has limited extrusion and kneading effect on rubber raw materials, which cannot make rubber molecules fully crosslink and orient, thereby affecting the strength, toughness and other key performance indicators of rubber pipe.

[0004] Moreover, some equipment lacks effective control mechanism in the process of raw material conveying and discharging, which is prone to blockage during raw material conveying, affecting the continuity and stability of production, and the discharging amount and speed are difficult to accurately control, which either leads to waste of raw materials and increases production cost, or affects production efficiency and product quality due to insufficient discharging, in addition, the existing rubber pipe forming device has poor versatility, when different specifications of rubber pipe need to be produced, the whole forming equipment needs to be replaced or complex adjustment is needed, which not only increases equipment cost and maintenance difficulty, but also leads to production cycle extension, and cannot quickly respond to market demand for different specifications of rubber pipe.

[0005] In order to solve the above problems, improve the production quality and efficiency of ethylene-propylene-diene rubber pipe, and reduce production cost, it has important practical significance to develop a kind of extrusion kneader based on planetary gear drive for ethylene-propylene-diene rubber pipe, optimize stirring and discharging design to ensure uniform mixing and conveying of raw materials, and have good versatility to adapt to production of different specifications of rubber pipe. INVENTION CONTENTS

[0006] In view of the deficiencies of the prior art, the utility model provides an extrusion kneader based on planetary gear drive for ethylene-propylene-diene rubber pipe, which solves the above problems.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: A kind of planetary gear transmission extruding kneader for ternary ethylene-propylene rubber pipe based on, including conveying box, the rear end surface of conveying box is equipped with drive box, rotating motor one is installed in the central of drive box outer end, extruding nozzle is attached in the front end surface of conveying box, blanking seat is installed on the upper end surface of conveying box, stirring box is connected on the upper end of blanking seat, rotating motor two is installed in the central of stirring box upper end, feed pipe is connected on the both sides of stirring box upper end surface, it is characterized in that, further include:

[0008] Transmission assembly, it is installed in the inside of drive box, and it is used to drive extrusion into pipe for rubber.

[0009] Preferably, the inside bottom of stirring box is provided as conical hopper surface, a discharge hole is formed in the central of conical hopper surface, a rotating rod is arranged in the central of stirring box, the upper end of rotating rod is connected to the output end of rotating motor two through the inside of stirring box, a cross is fixedly installed on the upper end of rotating rod in the inside of stirring box.

[0010] Preferably, the inside of stirring box, a plurality of stirring blades are arranged and installed on the outer end of rotating rod, a stirring impeller is installed on the bottom end of rotating rod, and the stirring impeller is arranged directly above the discharge hole, wherein stirring rods are respectively installed on the lower end surface of cross.

[0011] Preferably, the central of blanking seat is provided with a material guide groove, the lower end of material guide groove extends to the upper end of the inside of conveying box, the upper end of material guide groove is connected to the lower end surface of discharge hole, a material blocking plate is arranged in the central of material guide groove, the surface of one side of material blocking plate extends to the outer end surface of material guide groove, a telescopic rod is installed, a driving motor is fixedly connected to the other end of telescopic rod, wherein the driving motor is fixedly installed on the upper end surface of conveying box.

[0012] Preferably, the front end surface of conveying box is provided with a connecting plate one, a plurality of threaded holes are respectively formed in the outer end of connecting plate one, a connecting plate two is installed on the outer end surface of extruding nozzle, a plurality of through holes are respectively formed in the outer end of connecting plate two, a plurality of screw rods are arranged in the inside of through holes, the front end of screw rod is respectively screwed in the inside of threaded hole, wherein a forming cover is arranged in the front end of extruding nozzle, and the front end of forming cover extends to the front end outer end of extruding nozzle.

[0013] Preferably, the central of conveying box is provided with a material conveying auger, a taper extruding head is installed on the front end of material conveying auger, the outer end of taper extruding head is correspondingly arranged in the central of forming cover, a plurality of extruding rollers are respectively arranged in the outer end of material conveying auger.

[0014] Preferably, the transmission assembly comprises an inner gear ring, a driving gear disc and a driven gear disc, the inner gear ring is arranged in the driving box, the driving gear disc is arranged in the center of the inner gear ring, the connecting rod is connected to the center of the front end surface of the driving gear disc, the other end of the connecting rod is connected to the output end of the rotary motor, the rear end surface of the driving gear disc is connected to the rear end surface of the material conveying auger, the driven gear discs are arranged around the outer end of the driving gear disc, the rear end surfaces of the driven gear discs are connected to the rear end surfaces of the extrusion rollers, the driving gear disc is engaged with the driven gear disc, and the driven gear disc is engaged with the inner gear ring.

[0015] Compared with the prior art, the utility model provides a kind of planetary gear transmission extruding kneader based on three-element ethylene-propylene rubber pipe, with following beneficial effects:

[0016] The driving gear disc in the driving box is engaged with multiple driven gear discs in the inner gear ring to drive, so that the material conveying auger and multiple extrusion rollers can work cooperatively; in the process of conveying rubber raw materials, the material conveying auger continuously pushes the raw materials forward, and the multiple extrusion rollers extrude and knead the raw materials in multiple directions around the material conveying auger; compared with the traditional single extrusion mode, the planetary gear transmission structure greatly improves the extrusion and kneading effect on rubber raw materials, makes the molecular structure inside rubber raw materials more uniform, enhances the physical properties of rubber pipes, and simultaneously, the structure makes the equipment more stable during operation, reduces product quality fluctuations caused by unstable transmission, and improves the yield and production efficiency of rubber pipe production.

[0017] The inner part of the stirring box is driven by rotating rod to stir rubber raw materials in all directions, especially the rotation of stirring impeller above the discharge hole effectively prevents the raw materials from blocking at the discharge hole, ensures the smooth falling of raw materials, and the guide groove of the discharging seat is provided with a blocking plate that can be controlled to extend and retract by a driving motor, so as to accurately control the discharging speed and amount of raw materials; this design enables the operator to flexibly adjust the discharging condition according to actual production needs, avoids waste of raw materials and unstable factors in the production process; in addition, the extrusion nozzle is connected to the conveying box through the connecting plate and screw rod, which is convenient to disassemble and replace, can quickly adapt to the production needs of different specifications of rubber pipes, improves the versatility and flexibility of the equipment, and reduces the production cost of enterprises. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a stirring box structure schematic view of the utility model;

[0020] Figure 3 It is a discharging seat structure schematic view of the utility model;

[0021] Figure 4 It is the extrusion nozzle structure schematic view of the utility model;

[0022] Figure 5 It is the transmission assembly structure schematic view of the utility model.

[0023] In the figure: 1, conveying box;2, drive box;3, rotating motor one;4, extrusion nozzle;5, blanking seat;6, stirring box;7, rotating motor two;8, feed pipe;9, rotating rod;10, cross;11, stirring blade;12, stirring rod;13, stirring vane;14, drive motor;15, material blocking plate;16, telescopic rod;17, connecting plate one;18, connecting plate two;19, screw;20, forming cover;21, inner tooth ring;22, drive gear disc;23, driven gear disc;24, extrusion roller;25, conveying auger;26, taper extrusion head. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figures 1-5 A planetary gear transmission extruding kneader based on EPDM rubber pipe, including conveying box 1, the rear end surface of conveying box 1 is provided with drive box 2, rotating motor one 3 is installed in the outer end center of drive box 2, extrusion nozzle 4 is attached to the front end surface of conveying box 1, blanking seat 5 is installed on the upper end surface of conveying box 1, stirring box 6 is connected to the upper end of blanking seat 5, rotating motor two 7 is installed in the upper end center of stirring box 6, feed pipe 8 is connected to the upper end surface both sides of stirring box 6, characterized in that, further comprising:

[0026] Transmission assembly, installed in the inside of drive box 2, and used for transmission extrusion into pipe to rubber.

[0027] Further, the inside bottom surface of stirring box 6 is provided as a conical hopper surface, a discharge hole is formed in the central part of the conical hopper surface, rotating rod 9 is arranged in the inside central part of stirring box 6, the upper end of rotating rod 9 is connected to the output end of rotating motor two 7 through the inside of stirring box 6, and cross 10 is fixedly installed on the upper end of rotating rod 9 in the inside of stirring box 6.

[0028] Further, a plurality of stirring blades 11 are arranged and installed at the outer end of the rotating rod 9, and a stirring impeller 13 is installed at the bottom end of the rotating rod 9 and is arranged directly above the discharge hole, wherein the stirring rod 12 is respectively installed at the lower end surface of the cross 10.

[0029] Further, a material guiding groove is formed in the center of the feeding seat 5, extends to the upper end inside of the conveying box 1 at the lower end of the material guiding groove, is correspondingly connected to the lower end surface of the discharge hole at the upper end of the material guiding groove, a material blocking plate 15 is arranged in the center of the material guiding groove, a telescopic rod 16 is installed at the side surface of the material blocking plate 15 extending to the outer end surface of the material guiding groove, a driving motor 14 is fixedly connected at the other end of the telescopic rod 16, and the driving motor 14 is fixedly installed at the upper end surface of the conveying box 1.

[0030] Further, a connecting plate one 17 is installed at the front end surface of the conveying box 1, threaded holes are respectively formed in the outer end of the connecting plate one 17, a connecting plate two 18 is installed at the outer end surface of the extrusion nozzle 4, through holes are respectively formed in the outer end of the connecting plate two 18, screw rods 19 are arranged in the through holes, and the screw rods 19 are respectively screwed into the threaded holes at the front end, wherein a forming cover 20 is arranged at the front end inside of the extrusion nozzle 4, and the front end of the forming cover 20 extends to the front end outer end of the extrusion nozzle 4.

[0031] Further, a material conveying auger 25 is arranged in the center of the conveying box 1, a tapered extrusion head 26 is installed at the front end of the material conveying auger 25, the tapered extrusion head 26 is correspondingly arranged in the center of the forming cover 20 at the outer end, and extrusion rollers 24 are respectively arranged at the outer end of the material conveying auger 25.

[0032] Further, the transmission assembly includes an inner gear ring 21, a driving gear disc 22, and a driven gear disc 23, the inner gear ring 21 is installed in the driving box 2, the driving gear disc 22 is arranged in the center of the inner gear ring 21, a connecting rod is connected to the center of the front end surface of the driving gear disc 22, the other end of the connecting rod is correspondingly connected to the output end of the rotating motor one 3, the center of the rear end surface of the driving gear disc 22 is correspondingly connected to the rear end surface of the material conveying auger 25, the driven gear discs 23 are respectively arranged at the outer end of the driving gear disc 22, and the rear end surfaces of the driven gear discs 23 are respectively correspondingly connected to the rear end surfaces of the extrusion rollers 24, wherein the driving gear disc 22 is in meshing cooperation with the driven gear disc 23, and the driven gear disc 23 is in meshing cooperation with the inner gear ring 21.

[0033] Main body support and power part

[0034] Conveying box 1: as the basic support structure of the entire device, it provides installation space for the internal material conveying auger 25, extrusion rollers 24, and other components, plays a role in accommodating and conveying rubber raw materials, and is an important transmission channel for rubber from stirring to molding.

[0035] Drive box 2: installed on the rear end surface of the conveying box 1, mainly used to protect the internal transmission components, and provide a stable operating environment for the transmission components to avoid external interference and damage.

[0036] Rotary motor one 3: installed in the central part of the outer end of the drive box 2, is one of the main power sources of the equipment transmission. It drives the drive gear disc 22 in the drive box 2 to rotate through the rotation of the output shaft, thereby providing power for the operation of the conveying auger 25 and the extrusion roller 24.

[0037] Rotary motor two 7: installed in the central part of the upper end of the stirring box 6, provides power for the stirring components in the stirring box 6. It drives the rotating rod 9 to rotate, thereby making the stirring blades 11, stirring rods 12, stirring impellers 13 and other components to stir the rubber raw materials.

[0038] Raw material stirring part

[0039] Stirring box 6: used to contain and stir the EPDM rubber raw materials and additives. The inner bottom surface is designed as a conical hopper surface, which is beneficial to the collection of the stirred raw materials to the central discharge hole.

[0040] Feed pipe 8: connected to the upper end surface of the stirring box 6 on both sides, is the channel for the rubber raw materials and additives to enter the stirring box 6.

[0041] Rotating rod 9: arranged in the central part of the stirring box 6, the upper end is connected with the output end of the rotary motor two 7 inside the stirring box 6. Under the drive of the rotary motor two 7, the rotating rod 9 drives the stirring components installed on it to rotate.

[0042] Cross 10: fixedly installed on the upper end of the rotating rod 9 inside the stirring box 6, rotates with the rotating rod 9, and the stirring rod 12 installed on the lower end can stir the raw materials in the upper part of the stirring box 6.

[0043] Stirring blade 11: arranged and installed on the outer end of the rotating rod 9, under the drive of the rotating rod 9, it stirs the rubber raw materials in the stirring box 6, so that the raw materials and additives are fully mixed.

[0044] Stirring rod 12: installed on the lower end surface of the cross 10, assists the stirring blade 11 to stir the raw materials in the upper part of the stirring box 6, and enhances the stirring effect.

[0045] Stirring impeller 13: installed at the bottom end of the rotating rod 9, located directly above the discharge hole. During rotation, it can prevent the raw materials from blocking at the discharge hole, ensuring the smooth falling of the raw materials.

[0046] Discharging control part

[0047] Discharging seat 5: installed on the upper end surface of the conveying box 1, with a guide slot in the center, is the channel for the stirred raw materials to enter the conveying box 1 from the stirring box 6.

[0048] Driving motor 14: fixedly installed on the upper end surface of the conveying box 1, adjusts the position of the material blocking plate 15 in the material guide groove by controlling the extension and retraction of the telescopic rod 16.

[0049] Material blocking plate 15: arranged in the inner center of the material guide groove, with one side surface extending to the outer end surface of the material guide groove and connected with the telescopic rod 16. By the extension and retraction of the telescopic rod 16, the material blocking plate 15 can control the opening and closing degree of the material guide groove, thereby adjusting the feeding speed and amount of the raw materials.

[0050] Telescopic rod 16: connected between the material blocking plate 15 and the driving motor 14, performs extension and retraction movement under the control of the driving motor 14, so as to realize the adjustment of the position of the material blocking plate 15.

[0051] Transmission extrusion part

[0052] Inner tooth ring 21: installed inside the driving box 2, cooperates with the driving gear disc 22 and the driven gear disc 23 to form a planetary gear transmission structure, provides stable support and transmission path for transmission.

[0053] Driving gear disc 22: arranged in the center of the inner tooth ring 21, with the front end surface center connected with the output end of the rotary motor one 3 through a connecting rod, and the rear end surface center connected with the rear end surface of the material conveying auger 25. Under the drive of the rotary motor one 3, the driving gear disc 22 drives the material conveying auger 25 to rotate, and drives the driven gear disc 23 to rotate through the meshing with the driven gear disc 23.

[0054] Driven gear disc 23: distributed around the outer end of the driving gear disc 22, and meshes with the driving gear disc 22 and the inner tooth ring 21. The rear end surface center of the driven gear disc 23 is respectively connected with the rear end surface of the extrusion roller 24. Under the drive of the driving gear disc 22, the driven gear disc 23 drives the extrusion roller 24 to rotate, and extrudes and kneads the rubber raw materials.

[0055] Extrusion roller 24: arranged around the outer end of the material conveying auger 25, rotates under the drive of the driven gear disc 23, and extrudes and kneads the rubber raw materials conveyed through the material conveying auger 25, so that the rubber raw materials are more uniform and dense.

[0056] Material conveying auger 25: arranged in the inner center of the conveying box 1, rotates under the drive of the driving gear disc 22, and conveys the rubber raw materials entering the conveying box 1 from the feeding seat 5 to the extrusion nozzle 4.

[0057] Conical extrusion head 26: installed at the front end of the material conveying auger 25, extrudes the raw materials into the forming cover 20 inside the extrusion nozzle 4 during the conveying of the raw materials by the material conveying auger 25.

[0058] Forming part

[0059] Extrusion nozzle 4: attached to the front end surface of the conveying box 1, is one of the key components of the rubber material forming. The inside of the front end is provided with a forming cover 20, and the rubber material is extruded into a rubber tube with a specific shape by the forming cover 20 under the extrusion of the tapered extrusion head 26.

[0060] Connecting plate one 17: installed on the front end surface of the conveying box 1, the outer end is provided with threaded holes around, used for connecting with the connecting plate two 18 on the extrusion nozzle 4 through the screw rod 19.

[0061] Connecting plate two 18: installed on the outer end surface of the extrusion nozzle 4, the outer end is provided with through holes around, used for passing through the screw rod 19, and cooperating with the threaded holes on the connecting plate one 17, to realize the connection between the extrusion nozzle 4 and the conveying box 1.

[0062] Screw rod 19: set in the through hole of the connecting plate two 18, the front end is respectively screwed into the threaded hole of the connecting plate one 17, to fix the extrusion nozzle 4 on the conveying box 1, and this connection mode is convenient for dismounting and replacing the extrusion nozzle 4.

[0063] Forming cover 20: set in the inside of the front end of the extrusion nozzle 4, the front end extends to the front end of the extrusion nozzle 4. The shape of the forming cover 20 determines the final shape of the rubber tube, and the rubber material becomes a rubber tube with a specific specification after shaping.

[0064] Usage

[0065] Firstly, the raw material of ethylene-propylene-diene monomer rubber is transported into the stirring box 6 through the feeding pipe 8, the rotating motor 2 is started, the output end of the rotating motor 2 drives the rotating rod 9 to rotate, with the rotation of the rotating rod 9, the several stirring blades 11 installed on the outer end of the rotating rod 9 will stir the raw material in the stirring box 6, at the same time, the stirring impeller 13 fixed at the bottom end of the rotating rod 9 rotates just above the discharge hole, preventing the raw material from being blocked at the discharge hole, ensuring that the raw material can fall smoothly, in addition, the cross 10 installed on the upper end of the rotating rod 9 and the stirring rod 12 at the lower end of the cross 10 will also rotate, stirring the raw material at the upper part of the stirring box 6, improving the stirring effect, since the inner bottom surface of the stirring box 6 is designed as a conical hopper surface, the raw material after sufficient stirring will converge to the central discharge hole, the stirred raw material enters the guide chute of the discharging seat 5 through the discharge hole, the guide chute of the discharging seat 5 is provided with a blocking plate 15, one side of the blocking plate 15 is connected with the telescopic rod 16, the other end of the telescopic rod 16 is connected with the driving motor 14, the telescopic rod 16 is controlled to stretch and retract through the driving motor 14, so as to adjust the position of the blocking plate 15 in the guide chute, thereby controlling the discharging speed and amount of the raw material, when discharging is needed, the driving motor 14 makes the telescopic rod 16 retract, the blocking plate 15 is pulled out from the guide chute, the raw material can smoothly pass through the guide chute and enter the conveying box 1; when discharging needs to be stopped, the driving motor 14 makes the telescopic rod 16 stretch out, the blocking plate 15 blocks the guide chute, the raw material stops falling, after the raw material enters the conveying box 1, the rotating motor 1 starts to work, the output end of the rotating motor 1 drives the driving gear disc 22 to rotate, the driving gear disc 22 is located at the center of the inner gear ring 21 in the driving box 2, since the driving gear disc 22 is engaged with the surrounding driven gear disc 23, and the driven gear disc 23 is engaged with the inner gear ring 21, when the driving gear disc 22 rotates, it will drive the driven gear disc 23 to make planetary motion in the inner gear ring 21, the front end of the driving gear disc 22 is connected with the conveying auger 25 through the connecting rod, the rear end of the driven gear disc 23 is connected with the extrusion roller 24 respectively, therefore, when the driving gear disc 22 rotates, the conveying auger 25 will rotate to convey the raw material forward; at the same time, the driven gear disc 23 drives the extrusion roller 24 to rotate, extruding and kneading the raw material, so that the raw material is more uniform and dense, in the process of conveying the raw material, the tapered extrusion head 26 at the front end of the conveying auger 25 will extrude the raw material into the forming cover 20 inside the extrusion nozzle 4, the shape of the forming cover 20 determines the final shape of the rubber pipe, after the extrusion of the tapered extrusion head 26 and the shaping of the forming cover 20, the raw material is extruded into a rubber pipe with a specific shape, and is extruded out from the front end of the extrusion nozzle 4, the extrusion nozzle 4 is connected with the conveying box 1 through the connecting plate 2, the screw rod 19 and the connecting plate 1, this connection mode is convenient for disassembly and replacement of the extrusion nozzle 4, so as to adapt to the production needs of rubber pipes with different specifications.

[0066] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A planetary gear transmission extrusion kneading machine based on EPDM rubber tubing, comprising a conveyor box (1), a drive box (2) mounted on the rear end surface of the conveyor box (1), a rotary motor (3) mounted at the center of the outer end of the drive box (2), an extrusion nozzle (4) attached to the front end surface of the conveyor box (1), a feeding seat (5) mounted on the upper end surface of the conveyor box (1), a mixing box (6) connected to the upper end of the feeding seat (5), a rotary motor (7) mounted at the center of the upper end of the mixing box (6), and feed pipes (8) connected to both sides of the upper end surface of the mixing box (6), characterized in that, Also includes: The transmission assembly is installed inside the drive box (2) and is used to drive the extrusion of rubber into a tube.

2. The planetary gear transmission extrusion kneading mill for EPDM rubber tubing according to claim 1, characterized in that: The bottom surface of the mixing tank (6) is set as a conical bucket surface, and a discharge hole is opened in the center of the conical bucket surface. A rotating rod (9) is set in the center of the mixing tank (6). The upper end of the rotating rod (9) passes through the inside of the mixing tank (6) and is connected to the output end of the second rotary motor (7). A cross (10) is fixedly installed on the upper end of the rotating rod (9) inside the mixing tank (6).

3. The planetary gear transmission extrusion kneading mill for EPDM rubber tubing according to claim 2, characterized in that: Inside the mixing tank (6), several mixing blades (11) are arranged and installed at the outer end of the rotating rod (9), and a mixing impeller (13) is installed at the bottom end of the rotating rod (9). The mixing impeller (13) is located directly above the discharge hole, and a mixing rod (12) is installed on the lower surface of the cross (10).

4. The planetary gear transmission extrusion kneading mill for EPDM rubber tubing according to claim 1, characterized in that: The feeding seat (5) has a guide groove in the center. The lower end of the guide groove extends to the upper end of the inside of the conveying box (1). The upper end of the guide groove is connected to the lower end surface of the discharge hole. A baffle plate (15) is set in the center of the inside of the guide groove. A telescopic rod (16) is installed on one side surface of the baffle plate (15) extending to the outer end surface of the guide groove. A drive motor (14) is fixedly connected to the other end of the telescopic rod (16). The drive motor (14) is fixedly installed on the upper end surface of the conveying box (1).

5. The planetary gear transmission extrusion kneading mill for EPDM rubber tubing according to claim 1, characterized in that: The front end surface of the conveying box (1) is equipped with a connecting plate one (17), and threaded holes are respectively opened around the outer end of the connecting plate one (17). The outer end surface of the extrusion nozzle (4) is equipped with a connecting plate two (18), and through holes are respectively opened around the outer end of the connecting plate two (18). A screw (19) is provided inside the through hole, and the front end of the screw (19) is threaded into the inside of the threaded hole. A forming cover (20) is provided inside the front end of the extrusion nozzle (4), and the front end of the forming cover (20) extends to the outer end of the front end of the extrusion nozzle (4).

6. The planetary gear transmission extrusion kneading mill for EPDM rubber tubing according to claim 5, characterized in that: The conveying box (1) is provided with a conveying auger (25) in the center. A tapered extrusion head (26) is installed at the front end of the conveying auger (25). The outer end of the tapered extrusion head (26) is correspondingly provided in the center of the forming cover (20). Extrusion rollers (24) are provided around the outer end of the conveying auger (25).

7. The planetary gear transmission extrusion kneading mill for EPDM rubber tubing according to claim 1, characterized in that: The transmission assembly includes an internal gear ring (21), a drive gear disc (22), and a driven gear disc (23). The drive box (2) is equipped with an internal gear ring (21). A drive gear disc (22) is set in the center of the internal gear ring (21). A connecting rod is connected to the center of the front end surface of the drive gear disc (22). The other end of the connecting rod is connected to the output end of the rotary motor (3). The center of the rear end surface of the drive gear disc (22) is connected to the rear end surface of the conveying auger (25). Driven gear discs (23) are set around the outer end of the drive gear disc (22). The center of the rear end surface of the driven gear disc (23) is connected to the rear end surface of the extrusion roller (24). The drive gear disc (22) and the driven gear disc (23) are meshed. The driven gear disc (23) and the internal gear ring (21) are meshed.

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