A preparation process of EPDM rubber

Abstract

The present invention relates to the field of rubber processing, and more specifically, to an EPDM rubber preparation process. The process comprises the following steps: Step 1: heating a plurality of raw materials so that they are in a fluid state and then mixing; Step 2: kneading the rubber raw materials obtained after mixing, and inspecting the kneaded products; Step 3: vulcanizing the inspected raw materials; Step 4: extruding and molding the rubber raw materials transported out after vulcanization, and completing the unloading and packaging. The EPDM rubber preparation process is realized by using EPDM rubber preparation, and the device comprises a molding frame for extruding and molding rubber, a door panel is slid on one side of the molding frame, and a plurality of circular plates are rotated on the molding frame, and a knife capable of cutting the rubber raw materials is slid on the plurality of circular plates. It can destroy the pores in the accumulated rubber raw materials.

Description

Technical Field

[0001] The present invention relates to the field of rubber processing, and more particularly to a process for preparing EPDM rubber. Background Art

[0002] EPDM rubber is a high-elastic rubber made from EPDM as the main component, mixed with appropriate chemical additives and a certain amount of filler, and processed through processes such as batching, mixing, filtering, extrusion molding, vulcanization, inspection, and packaging. However, in the existing technology, the processed EPDM rubber cannot destroy the pores during the extrusion molding of the raw materials during molding, resulting in a large number of pores in the prepared rubber. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides an EPDM rubber preparation process, which can destroy pores in the accumulated rubber raw materials.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A process for preparing EPDM rubber comprises the following steps:

[0006] Step 1: Heat the various raw materials until they are in a fluid state and mix them;

[0007] Step 2: kneading the rubber raw materials obtained after mixing, and inspecting the kneaded product;

[0008] Step 3: Sulfurize the inspected raw materials;

[0009] Step 4: The rubber raw materials transported after vulcanization are extruded into shapes and packaged.

[0010] Furthermore, the EPDM rubber preparation process is implemented using EPDM rubber. The device includes a molding frame for extruding the rubber, a door panel is slidably mounted on one side of the molding frame, and multiple circular plates are rotated on the molding frame. Each of the multiple circular plates is slidably mounted with a knife capable of cutting the rubber raw material.

[0011] Furthermore, it also includes transmission wheels fixedly connected to the multiple circular plates and meshing with each other.

[0012] Furthermore, it also includes a mounting frame and a slide fixedly connected to both ends of the forming frame, on which both slides are slidably provided with racks for driving the two transmission wheels at both ends to rotate, and a cylinder I fixedly connected to the corresponding mounting frame for driving the racks to slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0014] Figure 1 The process flow chart for preparing rubber;

[0015] Figure 2 A schematic diagram of the structure of the inserted rubber raw material;

[0016] Figure 3 for Figure 2 A schematic diagram of the structure shown in another direction;

[0017] Figure 4 Schematic diagram of the structure of the insert knife;

[0018] Figure 5 It is a schematic diagram of the synchronous movement of multiple inserts;

[0019] Figure 6 A schematic diagram of the structure for adjusting multiple blade angles;

[0020] Figure 7 A schematic diagram of the structure for pushing multiple blades to slide;

[0021] Figure 8 It is a schematic diagram of the structure of multiple cone rods lifting;

[0022] Figure 9 Schematic diagram of the structure for blanking;

[0023] Figure 10 Schematic diagram of the structure of extruded rubber.

[0024] Forming frame 11; circular plate 12; door panel 13; transmission wheel 14; mounting frame 15; slide 16; inserting knife 21; limiting plate 22; connecting plate 31; screw sleeve I 32; rack 41; cylinder I 42; auxiliary frame 51; screw I 52; screw II 61; lifting plate 62; taper rod 63; screw III 71; screw sleeve III 72; screw IV 81; bending frame 82; pressing plate 83. DETAILED DESCRIPTION

[0025] refer to Figure 1 , detailing the process for preparing EPDM rubber:

[0026] A process for preparing EPDM rubber comprises the following steps:

[0027] Step 1: After heating the various raw materials, they are in a fluid state and then mixed. Compared with solids, fluids have stronger fluidity and can be mixed more quickly during mixing, and the multiple components are mixed more evenly.

[0028] Step 2: kneading the rubber raw materials obtained after mixing, and inspecting the kneaded products to check whether the kneaded products are qualified;

[0029] Step 3: Vulcanize the inspected raw materials;

[0030] Step 4: The rubber raw materials transported after vulcanization are extruded and molded. During the extrusion molding, the accumulated raw materials are inserted and cut multiple times to reduce the presence of bubbles in the accumulated raw materials, so that the extruded rubber is more compact. When the rubber is completed, the material is unloaded and packaged.

[0031] In combination with the above embodiments, the following functions can also be achieved:

[0032] refer to Figure 2 , detailing the implementation process of cutting extruded rubber to reduce bubbles:

[0033] The EPDM rubber preparation process is realized by using EPDM rubber. The device includes a molding frame 11 for extruding rubber. A door panel 13 is slidably connected to one side of the molding frame 11. The molding frame 11 and the door panel 13 form a space capable of holding rubber for loading the raw materials of the extruded rubber. The sliding of the door panel 13 facilitates the pushing and unloading of the molded rubber, so as to facilitate the undamaged removal of the molded rubber. A plurality of circular plates 12 are rotatably connected to one side wall of the molding frame 11 through bearings. The bearings mainly play the role of reducing friction and reducing the wear of the molding frame 11 and the plurality of circular plates 12 under long-term use. The bearings used all have a sealing function and can effectively prevent the rubber raw materials from entering the bearings, causing the bearings to be unusable. A blade 21 is slidably connected to the plurality of circular plates 12. The plurality of blades 21 can slide under the push of an external force and be inserted into the raw materials loaded in the molding frame 11 to cut the accumulated extruded rubber raw materials and destroy the air bubbles in the raw materials when the raw materials are accumulated, so that the compressed rubber can be more compact, delicate and of better quality.

[0034] In combination with the above embodiments, the following functions can also be achieved:

[0035] refer to Figure 3 and 4 , detailing the implementation process of adjusting the cutting direction of multiple blades:

[0036] The plurality of circular plates 12 are all fixedly connected to transmission wheels 14 by bolts. The plurality of transmission wheels 14 mesh with each other for transmission. When one or more of the transmission wheels 14 are driven to rotate by external force, the plurality of transmission wheels 14 mesh with each other to achieve synchronous rotation. The rotation of the plurality of transmission wheels 14 drives the plurality of blades 21 to rotate, thereby changing the positions of the blades on both sides of the plurality of blades 21. Therefore, when the plurality of blades 21 are forced to slide, the blades on both sides complete the cutting of the rubber from different directions.

[0037] In combination with the above embodiments, the following functions can also be achieved:

[0038] refer to Figure 3 、 4 and 6, detailing the implementation process of driving the plurality of plungers to rotate and adjusting the blade positions of the plurality of plungers:

[0039] Both ends of the forming frame 11 are fixedly connected to a slide 16, and the two slides 16 are slidably connected to a rack 41, and the two racks 41 are meshed with the corresponding transmission wheels 14 for transmission. Both ends of the forming frame 11 are fixedly connected to a mounting frame 15, and the two mounting frames 15 are fixedly connected to a cylinder I 42. The cylinder rods of the two cylinders I 42 are respectively connected to the corresponding racks 41 through threads. When the two cylinders I 42 are started, the cylinder rods of the two cylinders I 44 drive the two racks 41 to slide, and the two racks 41 mesh to drive the two transmission wheels 14 at both ends to rotate. The two transmission wheels 14 at both ends are synchronously meshed to drive the remaining transmission wheels 14 to rotate synchronously, thereby realizing the rotation of multiple transmission wheels 14, and the multiple transmission wheels 14 drive the multiple circular plates 12 to rotate synchronously, thereby driving the multiple inserters 21 to rotate, realizing the adjustment of the blade positions of the multiple inserters 21, and being able to insert into different positions of the accumulated rubber raw materials, destroying bubbles in multiple positions of the accumulated rubber raw materials, thereby producing higher quality rubber.

[0040] In combination with the above embodiments, the following functions can also be achieved:

[0041] refer to Figure 5 and 7 , details the implementation process of pushing multiple blades to slide:

[0042] The plurality of inserting knives 21 are all fixedly connected to the limit plate 22 by bolts, and the plurality of limit plates 22 are all rotatably connected to the connecting plate 31. The connecting plate 31 is fixedly connected to a plurality of screw sleeves I 32 by bolts, and the plurality of screw sleeves I 32 are all connected to screw rods I 52. The plurality of screw rods I 52 are rotatably connected to the auxiliary frame 51. The plurality of screw rods I 52 are all fixedly connected to the output shaft of the reduction motor I by bolts, and the plurality of reduction motors I are all fixedly connected to the auxiliary frame 51 by bolts. The plurality of reduction motors I are started, and the plurality of reduction motors I drive the plurality of screw rods I 52 to rotate. The plurality of screw rods I 52 drive the plurality of screw sleeves I 32 to slide through threads, and the plurality of screw sleeves I 32 synchronously drive the connecting plate 31 to slide. The connecting plate 31 drives the plurality of limit plates 22 to slide. The plurality of limit plates 22 drive the plurality of inserting knives 21 to insert into the rubber raw material to cut the rubber raw material, thereby reducing the number of bubbles in the rubber raw material and achieving the effect of optimizing the rubber.

[0043] In combination with the above embodiments, the following functions can also be achieved:

[0044] refer to Figure 8 and 9 , detailing the implementation process of inserting rubber raw materials from the bottom to reduce bubbles in the raw materials and optimize rubber quality:

[0045] A plurality of air-breaking holes are provided on the forming frame 11, and a plurality of screw rods II 61 are rotatably connected to the bottom of the forming frame 11. The plurality of screw rods II 61 are respectively fixedly connected to the output shafts of a plurality of reduction motors II, and the plurality of reduction motors II are fixedly connected to the forming frame 11. The plurality of screw rods II 61 are connected to a lifting plate 62 through a screw rod sleeve II, and a plurality of cone rods 63 are fixedly connected to the lifting plate 62. The plurality of cone rods 63 correspond to the plurality of air-breaking holes one by one. The plurality of reduction motors II are started, and the plurality of reduction motors II drive the plurality of screw rods II 61 to rotate, and the plurality of screw rods II 61 drive the plurality of screw rod sleeves II to move up and down to drive the lifting plate 62 to move up and down. The lifting plate 62 drives the plurality of cone rods 63 to be inserted from the lower end into the accumulated rubber raw materials, thereby reducing the number of pores in the rubber raw materials again and achieving the purpose of optimizing the rubber products.

[0046] In combination with the above embodiments, the following functions can also be achieved:

[0047] refer to Figure 9 , detailing the implementation process of rubber blanking to drive the door panel down to complete the molding:

[0048] The bottom of the forming frame 11 is rotatably connected to two screw rods III71, and the two screw rods III71 are respectively fixedly connected to the output shaft of the reduction motor III by bolts. The two reduction motors III are fixedly connected to the bottom of the forming frame 11 by bolts. Two screw rod sleeves III72 are fixedly connected to the door panel 13 by bolts. The two screw rod sleeves III72 are respectively connected to the corresponding screw rods III71. Start the two reduction motors III, and the two reduction motors III drive the screw rods III71 to rotate. The two screw rods III71 drive the two screw rod sleeves III72 to rise and fall through the threads, thereby driving the door panel 13 to rise and fall. When the door panel 13 is completely lowered, a plate is inserted into the inner wall of the forming frame 11 where multiple inserts 21 are located, that is, opposite to the door panel 13, to separate the rubber close to the inner wall, and then start the multiple inserts 21 to slide, and jointly push the plate to move, push the rubber down, and realize rubber unloading.

[0049] In combination with the above embodiments, the following functions can also be achieved:

[0050] refer to Figure 10 , detailing the implementation process of extruded rubber:

[0051] There are multiple screw rods IV 81 rotatably connected to the forming frame 11, and the multiple screw rods IV 81 are fixedly connected to the output shaft of the reduction motor IV by bolts. The multiple reduction motors IV are fixedly connected to the forming frame 11 by bolts. The multiple screw rods IV 81 are connected to a bent frame 82, and the multiple bent frames 82 are fixedly connected to the pressure plate 83. The multiple reduction motors IV are started to drive the multiple screw rods IV 81 to rotate, and the rotation of the multiple screw rods IV 81 drives the multiple bent frames 82 to rise and fall, and the multiple bent frames 82 drive the pressure plate 83 to rise and fall, completing the extrusion molding of the rubber at the lower end and realizing the processing of the rubber.

[0052] In combination with the above embodiments, the following functions can also be achieved:

[0053] refer to Figure 10 , detailed description of the implementation process of assisting multiple screw rods IV to rotate smoothly:

[0054] Both ends of the forming frame 11 are fixedly connected to a stabilizing frame, and the multiple screw rods IV 81 are rotatably connected to the corresponding stabilizing frames, so that the multiple screw rods IV 81 rotate more smoothly.

[0055] In combination with the above embodiments, the following functions can also be achieved:

[0056] refer to Figure 7 , detailing the implementation process of limiting multiple limit plates:

[0057] The diameters of the plurality of limit plates 22 are all larger than the diameter of the circular plate 12 . When the plurality of limit plates 22 move to a position close to the plurality of transmission wheels 14 , they are blocked and stopped, and the plurality of inserting knives 21 no longer slide.

Claims

1. A process for preparing EPDM rubber, characterized in that: The process includes the following steps: Step 1: Heat the various raw materials until they are in a fluid state and mix them; Step 2: kneading the rubber raw materials obtained after mixing, and inspecting the kneaded product; Step 3: Sulfurize the inspected raw materials; Step 4: extruding and molding the rubber raw materials transported after vulcanization and completing the blanking and packaging; the method is realized by using an EPDM rubber preparation device, the device comprising a molding frame (11) for extruding and molding the rubber, a door panel (13) sliding on one side of the molding frame (11), a plurality of circular plates (12) rotating on the molding frame (11), a plurality of circular plates (12) sliding on each of which are capable of cutting the rubber raw materials, a transmission wheel (14) fixedly connected to the plurality of circular plates (12) and meshing with each other, a mounting frame (15) and a slide (16) fixedly connected to both ends of the molding frame (11), a rack (41) sliding on each of the two slides (16) for driving the two transmission wheels (14) at both ends to rotate, and a cylinder I (42) fixedly connected to the corresponding mounting frame (15) for driving the rack (41) to slide, and a cylinder (42) fixedly connected to the plurality of slides The invention relates to a tool for producing a plurality of molded articles, wherein the tool is provided with a limit plate (22) on the knife (21), a connecting plate (31) for driving the plurality of limit plates (22) to slide, a plurality of screw sleeves I (32) fixedly connected to the connecting plate (31), a screw rod I (52) for driving the plurality of screw sleeves I (32) to slide, and an auxiliary frame (51) for installing the plurality of screw rods I (52), a plurality of air holes arranged on the forming frame (11), a plurality of screw rods II (61) rotating at the bottom of the forming frame (11), a lifting plate (62) driven by the plurality of screw rods II (61), and a plurality of cone rods (63) fixedly connected to the lifting plate (62) and corresponding to the plurality of air holes, a plurality of screw rods IV (81) rotating on the forming frame (11), a plurality of bent frames (82) connected to the plurality of screw rods IV (81), and a pressing plate (83) fixedly connected to the plurality of bent frames (82).

2. The process for preparing EPDM rubber according to claim 1, wherein: The invention also includes two screw rods III (71) rotating at the bottom of the forming frame (11), and two screw rod sleeves III (72) fixed to the door panel (13) and connected to the two screw rods III (71).

3. The process for preparing EPDM rubber according to claim 1, wherein: It also includes a stabilizing frame fixedly connected to both ends of the forming frame (11) and rotatably connected to a plurality of screw rods IV (81).

4. The process for preparing EPDM rubber according to claim 1, wherein: The diameters of the plurality of limiting plates (22) are all larger than the diameter of the circular plate (12).

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