Dry-method continuous vulcanization production equipment for cable rubber

Abstract

The invention relates to the field of cable vulcanization processing, in particular to dry-method continuous vulcanization production equipment for cable rubber. The cable rubber dry-method continuous vulcanization production equipment comprises an outer pipe, an inner pipe which is concentrically arranged is fixed in the outer pipe through a fixing disc, and an interlayer is formed between the outer pipe and the inner pipe; the circumferential outer wall of the inner pipe is provided with air holes used for guiding hot air flow into the inner pipe. An electric heating wire is also arranged in the interlayer; a plurality of supporting assemblies distributed in the axis direction are arranged in the inner pipe, and each supporting assembly comprises a supporting wheel; an air inlet pipeline structure communicated with the interlayer is fixed to the circumferential outer wall of the outer pipe, and a nitrogen guide pipe is further fixed to one side of the air inlet pipeline structure. According to the cable vulcanizing device, the multiple linearly-distributed supporting assemblies are arranged in the inner pipe, the supporting wheels serve as main supporting structures in the supporting assemblies, a cable to be vulcanized can be erected on the supporting wheels, the supporting wheels are used for supporting the cable, and therefore the situation that the cable droops can be avoided.

Description

Technical Field

[0001] The present invention relates to the field of cable vulcanization processing, in particular to a cable rubber dry continuous vulcanization production device. Background Art

[0002] Rubber vulcanization is one of the main processes in rubber processing. Through vulcanization, rubber molecules are cross-linked to form a network structure, thereby improving the physical and mechanical properties of the rubber and making it have the use value of rubber.

[0003] Patent No.: 202310829624.3 discloses "a cable rubber dry continuous vulcanization production equipment", which includes a first tube, a second tube, a first torsion member and a second torsion member; the second tube is located in the first tube and forms an interlayer in the first tube, and the first torsion member and the second torsion member are also located in the interlayer. The first torsion member is opposite to the second torsion member. When the cable passes through the second torsion member into the second tube and out of the first torsion member, the first torsion member and the second torsion member sense the downward pressure provided by the cable in the second tube, and when the downward pressure exceeds the pressure limit of the first torsion member and the second torsion member, the first torsion member and the second torsion member are rotated respectively, causing the cable in the second tube to twist and reducing the sagging range of the cable in the second tube.

[0004] However, there are still the following defects and deficiencies in the implementation and application process: It aims to improve the problem of cable sagging during cable vulcanization, mainly by rotating the first torsion member and the second torsion member to drive the cable itself to twist. However, the cable itself will also cause certain damage when it is twisted, that is, it is easy to cause uneven thickness of the insulation layer, which will affect its vulcanization effect.

[0005] Therefore, it is necessary to provide a new cable rubber dry continuous vulcanization production equipment to solve the above technical problems. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a cable rubber dry continuous vulcanization production equipment.

[0007] The cable rubber dry continuous vulcanization production equipment provided by the present invention comprises an outer tube, wherein a concentrically arranged inner tube is fixed inside the outer tube via a fixing plate, and the diameter of the inner tube is smaller than that of the outer tube, so that a sandwich is formed between the inner tube and the outer tube, and the fixing plate has a hole for the cable to pass through; The circumferential outer wall of the inner tube has air holes for introducing hot air flow into the inner tube; An electric heating wire is also provided in the interlayer between the outer tube and the inner tube; The inner tube is provided with a plurality of support assemblies distributed in the axial direction, and the support assemblies include support wheels for supporting and assisting in conveying the cable; An air inlet duct structure connected to the interlayer is fixed on the circumferential outer wall of the outer tube near the middle, and a nitrogen conduit is also fixed on one side of the air inlet duct structure to allow nitrogen to enter the air inlet duct structure and enter the interlayer with the air flow.

[0008] Preferably, two symmetrically distributed and axially arranged linear guide rails are welded and fixed to the circumferential inner wall of the inner tube, and positioning holes are provided near the ends of the linear guide rails.

[0009] Preferably, the air holes are in two rows and are symmetrically arranged about the axis of the inner tube.

[0010] Preferably, the outer wall of the support wheel is coated with silicone oil or paraffin.

[0011] Preferably, the support assembly also includes a first positioning plate, with inclined support plates welded and fixed on both sides of the first positioning plate, and an arched slide welded and fixed on the other end of the support plate. The arched slide is installed on the linear guide rail, and a bearing seat is also fixed on the upper end of the first positioning plate, and the support wheel is installed on the bearing seat through an axis.

[0012] Preferably, in the support assembly located at the most side, a fastening bolt is further provided on the arched slide, and the fastening bolt can be threadedly connected to the inside of the positioning hole to fix each support assembly inside the inner tube.

[0013] Preferably, a second positioning plate is further fixed to the lower end of the first positioning plate by bolts, and in two adjacent support assemblies, the two second positioning plates are fixed by a connecting rod.

[0014] Preferably, the air inlet duct structure includes a main connecting pipe, which is L-shaped, one end of which is welded and fixed to the outer pipe and connected to the interlayer, and the other end of the main connecting pipe is flange-connected to a filter tube, a hemispherical filter screen is installed inside the filter tube, and the convex surface of the filter screen faces the air inlet port of the filter tube, and a waste storage pipe is welded and fixed to the outer wall of the filter tube near the filter screen, and a valve pipe is fixed to the other end of the waste storage pipe; A branch connecting pipe is welded and fixed to the circumferential outer wall of the main connecting pipe, and the nitrogen conduit flange is connected to the other end of the branch connecting pipe.

[0015] Preferably, an auxiliary cleaning component for cleaning the filter screen is also installed inside the filter tube; The auxiliary cleaning assembly includes a bracket welded to the inner wall of the filter tube, the bracket being rotatably connected to a first rotating shaft concentrically arranged with the filter tube, one end of the first rotating shaft passing through the filter screen and being rotatably connected thereto, a plurality of annularly distributed brush plates in contact with the filter screen being fixed to the end, and a driven bevel gear being welded to the other end of the first rotating shaft; A radially arranged second rotating shaft is also rotatably connected to the outer circumferential wall of the filter tube. A driving bevel gear is welded and fixed to one end of the second rotating shaft. The driving bevel gear is meshed with the driven bevel gear for transmission, and a turning handle is fixed to the other end of the second rotating shaft.

[0016] Preferably, an exhaust pipe is welded to the outer circumferential wall of the inner tube, and the other end of the exhaust pipe passes through the interlayer and the outer tube and extends to the outside of the outer tube.

[0017] Compared with related technologies, the cable rubber dry continuous vulcanization production equipment provided by the present invention has the following beneficial effects: A plurality of linearly distributed support components are arranged in the inner tube, wherein the support wheel is the main support structure of the support component. The cable to be vulcanized can be mounted on the support wheel to support the cable by the support wheel, thereby preventing the cable from sagging and causing damage to the cable, thereby improving the vulcanization effect of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a preferred embodiment of the cable rubber dry continuous vulcanization production equipment provided by the present invention; Figure 2 The present invention shows Figure 1 Schematic diagram of the structure of the outer tube cross-section; Figure 3 The present invention shows Figure 2 A schematic diagram of the structure of the inner tube in cross section; Figure 4 This is a schematic diagram of the structure of a partial inner tube of the present invention; Figure 5 It is a structural schematic diagram of the support assembly shown in the present invention; Figure 6 This is a schematic structural diagram of the supporting assembly and the inner tube shown in the present invention; Figure 7 This is a structural schematic diagram of the air inlet duct structure shown in the present invention; Figure 8 The present invention shows Figure 7 A is an enlarged schematic diagram of the structure.

[0019] Numbers in the figure: 1, outer tube; 2. Inner tube; 21. Air hole; 22. Linear guide; 23. Positioning hole; 3. Fixed plate; 4. Heating wire; 5. Support assembly; 51. First positioning plate; 52. Support plate; 53. Arched slide; 54. Bearing seat; 55. Support wheel; 56. Second positioning plate; 57. Connecting rod; 58. Fastening bolts; 6. Air inlet duct structure; 61. Main connecting pipe; 62. Filter pipe; 63. Filter screen; 64. Waste storage pipe; 65. Valve pipe; 66. Branch connecting pipe; 7. Nitrogen duct; 8. Exhaust pipe; 9. Auxiliary cleaning assembly; 91. Tripod; 92. First rotating shaft; 93. Brush plate; 94. Driven bevel gear; 95. Second rotating shaft; 96. Driving bevel gear; 97. Turning handle. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0022] See also Figures 1 to 8 An embodiment of the present invention provides a cable rubber dry continuous vulcanization production equipment, which includes an outer tube 1, an inner tube 2, a heating wire 4, a support assembly 5, an air inlet duct structure 6 and a nitrogen duct 7.

[0023] For outer tube 1 and inner tube 2; See also Figures 1 to 4 The inner tube 2 is concentrically fixed to the outer tube 1 through a fixing plate 3. The diameter of the inner tube 2 is smaller than that of the outer tube 1, so that a sandwich is formed between the two. The fixing plate 3 has a hole for the cable to pass through. The circumferential outer wall of the inner tube 2 has air holes 21 for introducing hot air flow into the inner tube 2. The air holes 21 are arranged in two rows symmetrically with the axis of the inner tube 2.

[0024] It should be noted that in this device, a sandwich is formed between the outer tube 1 and the inner tube 2, and the inner tube 2 is mounted on the outer tube 1 via a fixing plate 3. Specifically, the inner tube 2 is plugged and fixed inside the fixing plate 3, and the fixing plate 3 is bolted to the outer tube 1 to ensure the stability of the entire device. At the same time, a rubber ring is used to seal the contact position of the three. There are air holes 21 on the circumferential outer wall of the inner tube 2, which are used for air conduction. That is, the hot air flow entering the interlayer can enter the inner tube 2 through the air holes 21, and the cable passes through the inner tube 2, so the cable can be vulcanized by strong convection.

[0025] For the heating wire 4; See also Figure 2 and Figure 3 The heating wire 4 is arranged in the interlayer between the outer tube 1 and the inner tube 2.

[0026] It should be noted that: an electric heating wire 4 is arranged in the interlayer between the outer tube 1 and the inner tube 2, and the electric heating wire 4 is used as the main heating element. Nitrogen can be introduced into the interlayer using the nitrogen conduit 7, and heating is performed using the electric heating wire 4. Compared with steam heating, nitrogen vulcanization can increase the heat resistance and oxidation resistance of rubber products and improve the service life of the cable. In addition, nitrogen vulcanization does not produce moisture, thereby avoiding the influence of moisture on insulation. At the same time, the required energy consumption is lower, which can improve the quality of the finished cable.

[0027] For support component 5; See also Figure 5 and Figure 6 The support assembly 5 includes a first positioning plate 51, and inclined support plates 52 are welded and fixed on both sides of the first positioning plate 51. An arched slide 53 is welded and fixed to the other end of the support plate 52. A bearing seat 54 is also fixed to the upper end of the first positioning plate 51. A support wheel 55 is installed on the bearing seat 54 through an axis. The outer wall of the support wheel 55 is coated with silicone oil or paraffin. A second positioning plate 56 is also bolted to the lower end of the first positioning plate 51. In two adjacent support assemblies 5, the two second positioning plates 56 are fixed by a connecting rod 57. At the same time, two symmetrically distributed, axially arranged linear guide rails 22 are welded and fixed to the circumferential inner wall of the inner tube 2. A positioning hole 23 is also provided near the end of the linear guide rail 22. In the support assembly 5 located at the most side, a fastening bolt 58 is also provided on the arched slide 53. The fastening bolt 58 can be threadedly connected to the inside of the positioning hole 23 to fix each support assembly 5 inside the inner tube 2.

[0028] It should be noted that: in the support assembly 5, the first positioning plate 51, the support plate 52 and the arched slide 53 constitute the basic support structure, a linear guide rail 22 is provided on the circumferential inner wall of the inner tube 2, and the arched slide 53 is installed on the linear guide rail 22, so the support assembly 5 can move along the linear guide rail 22, so it is more convenient to install the support assembly 5, and it is also convenient to adjust the position of each support assembly 5; and a bearing seat 54 is installed on the upper end of the first positioning plate 51, and a support wheel 55 is installed on the bearing seat 54, which can support the cable through the support wheel 55, and can cooperate with the feeding of the cable to realize auxiliary transportation of the cable; The surface of the support wheel 55 is coated with silicone oil or paraffin, which can effectively prevent the cable from sticking to the support wheel 55, thereby ensuring the quality of the cable itself and providing better auxiliary transportation effect for the cable; There are multiple support assemblies 5, and two adjacent support assemblies 5 are connected and fixed by a connecting rod 57, and the connecting rod 57 and the second positioning plate 56 are fixed by a nut. That is, the connecting rod 57 connecting the two groups of support assemblies 5 can be disassembled, so that the number of support assemblies 5 used can be increased or decreased according to the length of the pipeline itself, and a complete support structure is formed at the same time, so that it is more convenient to install the entire set of support assemblies 5 inside the inner tube 2; At the same time, there are positioning holes 23 near both ends of the linear guide rail 22, and in the support components 5 located on the two sides, there are fastening bolts 58 on the arch slide 53, and the fastening bolts 58 can be fixed inside the positioning holes 23. At this time, the two outermost support components 5 can be positioned, and the support components 5 are fixedly connected by connecting rods 57. Therefore, the support components 5 at the outer position are in a stable state, and the remaining support components 5 also remain stable.

[0029] For the air inlet duct structure 6; See also Figure 7 The air inlet duct structure 6 includes a main connecting pipe 61, which is L-shaped, one end of which is welded and fixed to the outer pipe 1 and communicates with the interlayer. The other end of the main connecting pipe 61 is flange-connected to a filter pipe 62. A hemispherical filter screen 63 is installed inside the filter pipe 62. The convex surface of the filter screen 63 faces the air inlet port of the filter pipe 62. A waste storage pipe 64 is welded and fixed to the outer wall of the filter pipe 62 near the filter screen 63. A valve pipe 65 is fixed to the other end of the waste storage pipe 64. A branch connecting pipe 66 is welded and fixed to the outer wall of the main connecting pipe 61, and the nitrogen conduit 7 is flange-connected to the other end of the branch connecting pipe 66; An exhaust pipe 8 is welded to the outer wall of the inner tube 2 , and the other end of the exhaust pipe 8 passes through the interlayer and the outer tube 1 and extends to the outside of the outer tube 1 .

[0030] It should be noted that in the air inlet duct structure 6, the main connecting pipe 61 is fixed to the outer pipe 1, and the other end thereof is provided with a filter pipe 62. The other end of the filter pipe 62 can be connected to an external gas guide device for introducing the gas into the interlayer. A filter screen 63 is also added inside the filter pipe 62 to further filter the pollutants in the air and improve the purity of the air entering the interlayer. The filter screen 63 itself is in a three-dimensional shape, so it is more convenient to clean. A waste storage pipe 64 is provided on the filter tube 62 at a position corresponding to the filter screen 63. That is, the dirt intercepted by the filter screen 63 can fall into the waste storage pipe 64 and be collected by the waste storage pipe 64. The lower end of the waste storage pipe 64 is closed by a valve pipe 65. After the valve pipe 65 is opened, the concentrated dirt inside the waste storage pipe 64 can be discharged. A branch connecting pipe 66 is also installed on the main connecting pipe 61. The branch connecting pipe 66 is used to install the nitrogen conduit 7. The outside of the nitrogen conduit 7 can also be connected to a gas guide device to introduce nitrogen into the conduit. The gas entering the nitrogen conduit 7 can enter the main connecting pipe 61, and then enter the interlayer together with the introduced air to achieve heating of the nitrogen. The exhaust pipe 8 is connected to the inner tube 2, and the gas entering the inner tube 2 can be discharged from the exhaust pipe 8, and the other end of the exhaust pipe 8 can be connected to the preheating area of the cable through a pipeline structure, that is, the exhausted gas with heat is used for the preheating treatment of the cable, so the heat utilization effect will be better.

[0031] See also Figure 8 , an auxiliary cleaning component 9 for cleaning the filter screen 63 is also installed inside the filter tube 62; The auxiliary cleaning assembly 9 includes a bracket 91 welded to the inner wall of the filter tube 62. A first rotating shaft 92 arranged concentrically with the filter tube 62 is rotatably connected to the bracket 91. One end of the first rotating shaft 92 passes through the filter screen 63 and is rotatably connected thereto. A plurality of annularly distributed brush plates 93 contacting the filter screen 63 are fixed to this end. A driven bevel gear 94 is welded to the other end of the first rotating shaft 92. A radially arranged second rotating shaft 95 is also rotatably connected to the outer wall of the filter tube 62 . A driving bevel gear 96 is welded and fixed to one end of the second rotating shaft 95 . The driving bevel gear 96 is meshed with the driven bevel gear 94 for transmission, and a turning handle 97 is fixed to the other end of the second rotating shaft 95 .

[0032] It should be noted that the auxiliary cleaning assembly 9 is provided for the filter 63, that is, the first rotating shaft 92 is concentrically arranged with the filter tube 62 and also passes through the filter 63. One end of the first rotating shaft 92 has a plurality of brush plates 93. The brush plates 93 are in direct contact with the surface of the filter 63. When the brush plates 93 rotate, they can clean the dirt attached to the surface of the filter 63, and the cleaned dirt can fall into the waste storage pipe 64. The filter tube 62 also has a rotatable second rotating shaft 95, and a turning handle 97 is provided at one end of the second rotating shaft 95. The turning handle 97 can drive the second rotating shaft 95 to rotate, and the other end has a driving bevel gear 96. One end of the second rotating shaft 95 has a driven bevel gear 94. The driven bevel gear 94 and the driving bevel gear 96 are engaged for transmission. Therefore, when the turning handle 97 is used to drive the second rotating shaft 95 to rotate, the first rotating shaft 92 can be driven to rotate, thereby driving the brush plate 93 to rotate to clean the filter screen 63.

[0033] It should also be noted that the auxiliary cleaning component 9 cannot be used for deep cleaning of the filter 63. When performing deep cleaning, the filter 63 needs to be removed for cleaning. The setting of the auxiliary cleaning component 9 can reduce the frequency of deep cleaning and increase the interception life of the filter 63.

[0034] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A cable rubber dry continuous vulcanization production equipment, comprising an outer tube (1), wherein a concentrically arranged inner tube (2) is fixed inside the outer tube (1) via a fixing plate (3), and the diameter of the inner tube (2) is smaller than the diameter of the outer tube (1), so that a sandwich is formed between the inner tube (2) and the outer tube (1), and the fixing plate (3) has a hole for the cable to pass through, characterized in that: The circumferential outer wall of the inner tube (2) has air holes (21) for introducing hot air flow into the interior of the inner tube (2); A heating wire (4) is also provided in the interlayer between the outer tube (1) and the inner tube (2); A plurality of support assemblies (5) distributed in an axial direction are provided inside the inner tube (2), and the support assemblies (5) include support wheels (55) for supporting and assisting in the transmission of cables; An air inlet duct structure (6) communicating with the interlayer is fixed on the circumferential outer wall of the outer tube (1) near the middle thereof, and a nitrogen conduit (7) is also fixed on one side of the air inlet duct structure (6) to allow nitrogen to enter the interior of the air inlet duct structure (6) and enter the interlayer along with the air flow.

2. The cable rubber dry continuous vulcanization production equipment according to claim 1, characterized in that: Two symmetrically distributed linear guide rails (22) with axes arranged thereon are welded and fixed to the circumferential inner wall of the inner tube (2), and positioning holes (23) are provided near the ends of the linear guide rails (22).

3. The cable rubber dry continuous vulcanization production equipment according to claim 1, characterized in that: The air holes (21) are arranged in two rows symmetrically about the axis of the inner tube (2).

4. The cable rubber dry continuous vulcanization production equipment according to claim 1, characterized in that: The outer wall of the support wheel (55) is coated with silicone oil or paraffin.

5. The cable rubber dry continuous vulcanization production equipment according to claim 1, characterized in that: The support assembly (5) further comprises a first positioning plate (51), with inclined support plates (52) welded and fixed on both sides of the first positioning plate (51), an arched slide (53) welded and fixed on the other end of the support plate (52), and the arched slide (53) is mounted on the linear guide rail (22). A bearing seat (54) is also fixed on the upper end of the first positioning plate (51), and the support wheel (55) is mounted on the bearing seat (54) through a shaft.

6. The cable rubber dry continuous vulcanization production equipment according to claim 5, characterized in that: In the support assembly (5) located at the most side, a fastening bolt (58) is further provided on the arched slide (53), and the fastening bolt (58) can be threadedly connected to the inside of the positioning hole (23), so that each support assembly (5) is fixed inside the inner tube (2).

7. The cable rubber dry continuous vulcanization production equipment according to claim 6, characterized in that: A second positioning plate (56) is also bolted to the lower end of the first positioning plate (51), and in two adjacent support assemblies (5), the two second positioning plates (56) are fixed via a connecting rod (57).

8. The cable rubber dry continuous vulcanization production equipment according to claim 1, characterized in that: The air inlet duct structure (6) includes a main connecting pipe (61), which is L-shaped, one end of which is welded and fixed to the outer pipe (1) and communicates with the interlayer, and the other end of the main connecting pipe (61) is flange-connected to a filter pipe (62), a hemispherical filter screen (63) is installed inside the filter pipe (62), and the convex surface of the filter screen (63) faces the air inlet port of the filter pipe (62), and a waste storage pipe (64) is welded and fixed to the outer wall of the filter pipe (62) near the filter screen (63), and a valve pipe (65) is fixed to the other end of the waste storage pipe (64); A branch connecting pipe (66) is welded and fixed to the circumferential outer wall of the main connecting pipe (61), and the nitrogen conduit (7) is flange-connected to the other end of the branch connecting pipe (66).

9. The cable rubber dry continuous vulcanization production equipment according to claim 7, characterized in that: An auxiliary cleaning component (9) for cleaning the filter screen (63) is also installed inside the filter tube (62); The auxiliary cleaning assembly (9) comprises a bracket (91) welded and fixed to the inner wall of the filter tube (62); a first rotating shaft (92) arranged concentrically with the filter tube (62) is rotatably connected to the bracket (91); one end of the first rotating shaft (92) passes through the filter screen (63) and is rotatably connected thereto; a plurality of brush plates (93) distributed in an annular shape and in contact with the filter screen (63) are fixed to the end; and a driven bevel gear (94) is welded and fixed to the other end of the first rotating shaft (92); A radially arranged second rotating shaft (95) is also rotatably connected to the outer circumferential wall of the filter tube (62). A driving bevel gear (96) is welded and fixed to one end of the second rotating shaft (95). The driving bevel gear (96) is meshed with the driven bevel gear (94) for transmission, and a turning handle (97) is fixed to the other end of the second rotating shaft (95).

10. The cable rubber dry continuous vulcanization production equipment according to claim 1, characterized in that: An exhaust pipe (8) is also welded to the circumferential outer wall of the inner tube (2), and the other end of the exhaust pipe (8) passes through the interlayer and the outer tube (1) and extends to the outside of the outer tube (1).

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