Explosion-proof cable processing equipment and method

Abstract

The invention discloses an explosion-proof cable processing device and method, and belongs to the technical field of explosion-proof cable processing, the explosion-proof cable processing device comprises a cooling box and a heat treatment box fixed on one side of the top surface of the cooling box, and further comprises a traction roller, a traction motor, a rotating gear ring, an elastic rolling part, a rotating mechanism, a wiping roller and a movable wiping mechanism; according to the invention, the outer surface of the cable core insulating layer is subjected to movable wiping treatment of cooling water through the wiping roller, and meanwhile, the outer surface of the cable core insulating layer is subjected to axial stress elimination treatment to a certain extent; therefore, the outer surface of the cable core insulating layer is subjected to circumferential compression type stress relief treatment through the elastic rolling part, and the outer surface of the cable core insulating layer is subjected to heat treatment to relieve stress in cooperation with the heat treatment box, so that the stress relief modes of the cable core insulating layer are diversified, and the stress relief rate of the cable core insulating layer is obviously improved.

Description

Technical Field

[0001] The invention belongs to the technical field of explosion-proof cable processing, and in particular relates to explosion-proof cable processing equipment and a method. Background Art

[0002] Explosion-proof cables are mainly composed of conductors, insulation layers, filling materials, shielding layers and sheath layers. These components work together to ensure that the cable can safely and reliably transmit electrical energy in explosive environments. At present, during the processing of explosion-proof cables, the raw materials of the cable core are usually made into a single metal wire through a wire drawing process, and multiple metal wires are twisted to form a cable core. Then the outer surface of the cable core needs to be wrapped with the cable core by injection molding, so that the outside of the cable core is wrapped with a layer of insulating rubber sleeve, and then the cable that has been wrapped with the insulation layer is wrapped with an explosion-proof layer and an outer sheath in turn, thereby completing the processing of the explosion-proof cable. However, in the actual operation process, when the insulation layer of the explosion-proof cable is wrapped, stress will be formed inside the plastic product. One of the main reasons for the stress of plastic products is that during the molding process, due to the different cooling rates inside and outside the part, the surface material contacts the mold wall with a lower temperature, and quickly cools and solidifies into a hard shell, while the internal material is still in a molten state. As it cools and shrinks, internal stress is generated inside the part.

[0003] In the prior art, the stress elimination method for injection molded products is usually heat treatment. Although the heat treatment method can eliminate the stress of injection molded products, it takes sufficient time to eliminate the stress. The stress elimination method is single and cannot quickly eliminate the stress in the cable. In addition, since the cable core will pass through a water pool for cooling after being wrapped with an insulating layer, the water droplets on the surface of the cable core insulation layer must be dried first to eliminate the stress by heat treatment, which further reduces its stress elimination efficiency.

[0004] Therefore, there is a need for an explosion-proof cable processing device and method to solve the problems of a single stress elimination method and low stress elimination efficiency when the insulation layer of the explosion-proof cable is wrapped by injection molding in the prior art. Summary of the invention

[0005] The object of the present invention is to provide an explosion-proof cable processing device and method to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: an explosion-proof cable processing device, comprising a cooling box and a heat treatment box fixed to one side of the top surface of the cooling box, and further comprising: Conveying rollers, two conveying rollers are provided and are rotatably mounted on the top surface of the cooling box and the bottom inner wall of the heat treatment box respectively, the inner wall of the cooling box is rotatably connected with four rotating rods distributed in a rectangular shape, and a cooling pressing roller is rotatably connected between two rotating rods located on the same side, and a rotation supply mechanism for synchronous rotation of the four rotating rods is provided in the middle of the cooling box; A pulling roller, wherein two pulling rollers are provided and are rotatably installed on the inner wall of the heat treatment box in an upper and lower distribution, the outer ends of the two pulling rollers are coaxially fixed with transmission gears, the two transmission gears are meshingly connected, the outer end of the heat treatment box is provided with a pulling motor coaxially connected with one of the pulling rollers, two limiting collars are provided on the outer side of the pulling roller, which are distributed in parallel and fixed to the inner wall of the bottom of the heat treatment box, a rotating gear ring is rotatably sleeved between the two limiting collars, a plurality of elastic rolling parts evenly distributed are provided in the rotating gear ring, and a rotating mechanism cooperating with the pulling roller is provided on the periphery of the rotating gear ring; The wiping roller is provided with two wiping rollers and both wiping rollers are obliquely arranged on the inner wall of one side of the cooling box close to the heat treatment box, and a movable wiping mechanism matched with the pulling roller is arranged between the two wiping rollers.

[0007] It should be noted that the supply and transfer mechanism includes: Rotating gears, there are four rotating gears and they are coaxially fixed to the ends of the four rotating rods respectively, and the two rotating gears at the same end are meshed and connected with an adjusting rack rod; A connecting rod is fixed to the top ends of the two adjusting rack rods. An electric push rod is fixed to the outer end surface of the cooling box. The output end of the electric push rod is fixed to the bottom surface of the connecting rod.

[0008] It is further worth noting that the elastic rolling element comprises: A fixed sleeve, wherein the fixed sleeve is provided with a plurality of inner walls fixedly embedded in the rotating gear ring at equal angles, a telescopic rod is slidably penetrated through the inner wall of each fixed sleeve, and a compression spring is provided inside each fixed sleeve and fixed to the opposite surface of the telescopic rod and the fixed sleeve; A U-shaped frame is provided with a plurality of U-shaped frames corresponding one to one with a plurality of telescopic rods, the U-shaped frames are fixed to the ends of the adjacent telescopic rods, and the inner wall of each U-shaped frame is rotatably connected with a roller rod.

[0009] It should be further explained that the rotating mechanism includes: A fixed plate, the fixed plate is fixed to the inner wall of the heat treatment box, the outer surface of the fixed plate is rotatably connected with a turntable, the outer surface of the turntable is fixed with a rotating column, the outer periphery of the rotating column is provided with a movable sleeve ring slidably connected with the inner wall of the bottom of the heat treatment box, the outer surface of the movable sleeve ring is fixed with a movable rack rod, the movable rack rod is located between the two limit sleeve rings and meshed with the rotating gear ring, the end surface of the heat treatment box slides through the limit rod, and the limit rod is fixed to the outer surface of the movable sleeve ring; A driving bevel gear is coaxially fixed with the pulling roller located below, and a driven bevel gear coaxially fixed with the rotating disk is arranged on the outer surface of the fixing plate, and the driving bevel gear is meshedly connected with the driven bevel gear.

[0010] As a preferred embodiment, the mobile wiping mechanism includes: An incomplete gear is coaxially fixed with the pulling roller located above, a U-shaped rack rod is slidably penetrated through the side wall of the heat treatment box, the incomplete gear is meshed and connected with the U-shaped rack rod, a pulling rod is fixed at the end of the U-shaped rack rod, and a sliding groove is provided on the outer surface of the pulling rod; The guide grooves are provided with four inclined surfaces at both ends of the cooling box, the inner walls of the two wiping rollers are fixed with rotating shafts, the two rotating shafts respectively pass through the two guide grooves, one end of the rotating shaft is located inside the slide groove, and a reverse transmission member is provided between the two rotating shafts.

[0011] As a preferred embodiment, the reverse transmission member includes: Guide blocks, four of which are provided and respectively located at the periphery of the guide groove, the four guide blocks are fixed to the outer surface of the end of the cooling box, the inner wall of each guide block is slidably sleeved with a guide rack, and each of the rotating shafts is rotatably mounted on the inner walls of two guide racks located at the same position; The reversing gears are provided with two reversing gears and are rotatably mounted on the two end surfaces of the cooling box respectively. The reversing gears are meshingly connected with the two guide racks located at the same end.

[0012] As a preferred embodiment, a push-pull plate fixed to the outer surface of the U-shaped rack rod is arranged on the outer side of the conveying roller located inside the heat treatment box, the push-pull plate is slidably connected to the inner wall of the heat treatment box, and the bottom outer surface of the push-pull plate is arranged as an inclined slope.

[0013] As a preferred embodiment, a sealing door rotatably opened on the outer surface of the end of the heat treatment box is provided on the outer side of the push-pull plate, and a rotating cover plate rotatably connected to the top surface of the middle part of the heat treatment box is provided on the outer side of the conveying roller located inside the heat treatment box.

[0014] A method for processing explosion-proof cables, using explosion-proof cable processing equipment, comprises the following steps: S1. Wire core manufacturing: The raw materials of the cable core are melted and made into metal monofilaments through a wire drawing process, and the made metal monofilaments are twisted into a core; S2, insulation layer wrapping: 1. The screw is rotated in the heated machine cylinder to squeeze the plastic sent from the hopper forward, so that the plastic is evenly plasticized, and the plastic is squeezed into a continuous plastic layer through the machine head and the mold, and then squeezed onto the outer surface of the wire core to form an insulation layer wrapping the wire core; Second, the wire core wrapped with the insulation layer is adjusted by the supply and rotation mechanism so that the wire core wrapped with the insulation layer passes through the cooling box for cooling and shaping treatment, and then passes through the heat treatment box. Through the driving of the pulling motor and the pulling treatment of the pulling roller, the moving wiping mechanism and the rotating mechanism are synchronously driven to move synchronously, that is, the two wiping rollers and multiple elastic roller pressing parts are driven to reciprocate on the surface of the insulation layer, so as to achieve reciprocating wiping of the surface of the insulation layer of the wire core and diversified stress relief treatment; S3, explosion-proof layer package: The wire core wrapped with the insulating layer after the stress relief treatment in step S2 is wrapped with the first composite explosion-proof layer, the shielding layer and the second composite explosion-proof layer in sequence to form explosion-proof protection for the cable surface; S4, outer sheath package: The outer surface of the second composite material explosion-proof layer in step S3 is wrapped with an outer sheath to complete the processing of the explosion-proof cable.

[0015] Compared with the prior art, the explosion-proof cable processing equipment and method provided by the present invention have at least the following beneficial effects: (1) Through the cooperation between the pulling roller and the wiping mechanism, the two wiping rollers perform a mobile wiping treatment of the outer surface of the cable core insulation layer with cooling water, and at the same time, a certain degree of axial stress relief treatment is performed on the outer surface of the cable core insulation layer. Through the cooperation of the pulling roller and the rotating mechanism, and the compression effect of the elastic roller pressure piece on the outer surface of the cable core insulation layer, the outer surface of the cable core insulation layer is subjected to circumferential compression stress relief treatment by the elastic roller pressure piece, and the outer surface of the cable core insulation layer is heat-treated to eliminate stress in cooperation with the heat treatment box, so that the stress relief method of the cable core insulation layer is diversified and its stress relief rate is significantly improved.

[0016] (2) By setting up the transfer mechanism, the outer surface of the cable core insulation layer can quickly pass from the cooling box to the heat treatment box, thereby improving the convenience of stress relief of the cable core insulation layer in the heat treatment box.

[0017] (3) The push-pull plate is set up, which reciprocates with the U-shaped rack rod, which can not only enhance the flow effect of the hot air flow in the heat treatment box, and to a certain extent improve the effect of heat treatment stress elimination of the cable core insulation layer in the heat treatment box, but also push the cooling water remaining at the front end of the heat treatment box back into the cooling box, and cooperate with the relative shielding effect of the rotating cover plate on the front end of the heat treatment box to improve the fluidity of the air flow, thereby to a certain extent improving the drying effect of the cooling water remaining on the surface of the cable core insulation layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the mobile wiping mechanism of the present invention; Figure 3 It is a schematic diagram of the partial internal structure of the cooling box and the heat treatment box of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of the middle A area; Figure 5 It is a partial structural schematic diagram of the supply and transfer mechanism of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of the middle B area; Figure 7 It is a partial structural schematic diagram of the rotating mechanism of the present invention; Figure 8 It is a schematic diagram of the local structure of the elastic rolling element of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure of the middle C area.

[0019] In the figure: 1. cooling box; 2. heat treatment box; 3. conveying roller; 4. rotating rod; 5. cooling roller; 6. feeding and rotating mechanism; 61. rotating gear; 62. adjusting rack rod; 63. connecting rod; 64. electric push rod; 7. pulling roller; 8. transmission gear; 9. pulling motor; 10. limiting collar; 11. rotating gear ring; 12. elastic rolling member; 121. fixed sleeve; 122. telescopic rod; 123. compression spring; 124. U-shaped frame; 125. rolling rod; 13. rotating mechanism; 131. fixed plate; 132. turntable; 133. Rotating column; 134. Moving sleeve ring; 135. Moving rack rod; 136. Limiting rod; 137. Active bevel gear; 138. Driven bevel gear; 14. Wiping roller; 15. Moving wiping mechanism; 151. Incomplete gear; 152. U-shaped rack rod; 153. Pull rod; 154. Slide groove; 155. Guide groove; 156. Rotating shaft; 157. Reverse transmission member; 1571. Guide block; 1572. Guide rack; 1573. Reversing gear; 16. Push-pull plate; 17. Sealing door; 18. Rotating cover plate. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure.

[0022] Unless otherwise defined, the technical or scientific terms used in the present disclosure shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. The words "including" or "comprising" and the like used in the present disclosure mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0023] See also Figure 1-9The present invention provides an explosion-proof cable processing device, comprising a cooling box 1 and a heat treatment box 2 fixed to one side of the top surface of the cooling box 1, and also comprising a conveying roller 3, wherein two conveying rollers 3 are provided and are rotatably mounted on the top surface of the cooling box 1 and the bottom inner wall of the heat treatment box 2, respectively, and the inner wall of the cooling box 1 is rotatably connected with four rotating rods 4 distributed in a rectangular shape, and a cooling pressing roller 5 is rotatably connected between the two rotating rods 4 located on the same side, and a supply mechanism 6 for synchronous rotation of the four rotating rods 4 is provided in the middle of the cooling box 1; It should be noted that, through the setting of the supply and rotation mechanism 6, the four rotating rods 4 are rotated synchronously, so that the two cooling rollers 5 are rotated synchronously in the opposite direction, that is, after the cable core insulation layer is extruded and wrapped, its outer surface passes through the upper surface of the conveying roller 3 on the top surface of the cooling box 1, the lower surface of the two cooling rollers 5, and the upper surface of the conveying roller 3 on the bottom inner wall of the heat treatment box 2 in sequence, and then the two cooling rollers 5 are driven by the supply and rotation mechanism 6 to rotate synchronously in the opposite direction to the bottom inner wall of the cooling box 1, so that the cable core insulation layer is immersed below the cooling water level in the cooling box 1, thereby realizing the rapid cooling treatment of the cable core insulation layer; A pulling roller 7, wherein two pulling rollers 7 are provided and are rotatably installed on the inner wall of the heat treatment box 2 in an upper and lower distribution. Transmission gears 8 are coaxially fixed to the outer ends of the two pulling rollers 7, and the two transmission gears 8 are meshedly connected. A pulling motor 9 coaxially connected to one of the pulling rollers 7 is provided at the outer end of the heat treatment box 2. Two limiting collars 10 are arranged on the outer side of the pulling roller 7 and are distributed in parallel and fixed to the inner wall of the bottom of the heat treatment box 2. A rotating gear ring 11 is rotatably sleeved between the two limiting collars 10, and a plurality of elastic rolling parts 12 evenly distributed are arranged in the rotating gear ring 11. A rotating mechanism 13 cooperating with the pulling roller 7 is arranged on the periphery of the rotating gear ring 11; It should be noted that the outer surface of the end of the cable core insulation layer passes through the inner wall of the two pulling rollers 7 and the center of the multiple elastic rolling parts 12 in sequence, and through the driving of the pulling motor 9 and the meshing transmission of the two transmission gears 8, the friction between the two pulling rollers 7 and the outer surface of the cable core insulation layer is accelerated, so that the cable core wrapped with the insulation layer can quickly pass through the cooling box 1 for cooling treatment; The rotating mechanism 13 is arranged to move synchronously with the rotation of the pulling roller 7, so that the rotating gear ring 11 rotates clockwise and counterclockwise between the two limiting rings 10, thereby driving the elastic roller 12 on the rotating gear ring 11 to rotate forward, that is, the circumferential outer surface of the cable core insulation layer is reciprocated by the elastic roller 12, thereby realizing the circumferential compression stress relief treatment of the cable core insulation layer; It should be noted that the heat treatment box 2 provides a suitable temperature for the cable core insulation layer to be heated, and the grains of the plastic product of the cable core insulation layer are heated to form a stress field that is quasi-same as the grains but opposite to the stress state, thereby achieving the effect of eliminating stress, and the elastic roller 12 is used to eliminate the circumferential compression stress of the cable insulation layer, so that the cable core insulation layer stress elimination method has non-singleness; Wiping rollers 14, two wiping rollers 14 are provided and both wiping rollers 14 are obliquely arranged on the inner wall of one side of the cooling box 1 close to the heat treatment box 2, and a movable wiping mechanism 15 cooperating with the pulling roller 7 is arranged between the two wiping rollers 14; It should be noted that when the cable core insulation layer passes through the lower surfaces of the two cooling rollers 5, it then passes through the opposite outer surfaces of the two wiping rollers 14 in an offset manner, and then passes through the top surface of the conveying roller 3 located in the heat treatment box 2; It should be noted that the movable wiping mechanism 15 is arranged to move synchronously with the movement of the pulling roller 7, so that the two wiping rollers 14 can respectively perform axial reciprocating motion on the top outer surface and the bottom outer surface of the cable core insulation layer, which can not only perform reciprocating wiping treatment on the outer surface of the cable core insulation layer passing through the cooling box 1, but also form axial compression stress relief treatment on the outer surface of the cable core insulation layer through the friction between the wiping roller 14 and the outer surface of the cable core insulation layer, and cooperate with the subsequent elastic roller pressing part 12 to eliminate the circumferential compression stress of the cable insulation layer and the heat treatment stress relief inside the heat treatment box 2, so that the stress relief method of the cable core insulation layer has diversity.

[0024] Further as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, it is worth to explain in detail that the rotation mechanism 6 includes a rotating gear 61, four rotating gears 61 are provided and are respectively coaxially fixed with the ends of the four rotating rods 4, and the two rotating gears 61 located at the same end are meshed and connected with an adjusting rack rod 62; A connecting rod 63, the connecting rod 63 is fixed to the top ends of the two adjusting rack rods 62, an electric push rod 64 is fixed to the outer end surface of the cooling box 1, and the output end of the electric push rod 64 is fixed to the bottom surface of the connecting rod 63; It should be noted that when the cable core insulation layer does not pass through the lower surface of the two cooling rollers 5, the electric push rod 64 drives the connecting rod 63 to approach the top surface of the cooling box 1, so that the bottom ends of the two adjustment rack rods 62 are located at the bottom inner wall of the cooling box 1. At this time, through the meshing transmission of the adjustment rack rod 62 and the rotating gear 61, the four rotating rods 4 are all rotated toward the two sides away from the cooling box 1, so that the distance between the two cooling rollers 5 is increased and the height of the cooling roller 5 is close to the top of the cooling box 1. It should be noted that when the cable core insulation layer is being installed, the electric push rod 64 drives the connecting rod 63 and the adjusting rack rod 62 to move downward, that is, the distance between the two cooling rollers 5 is increased and the height is raised, so that the cable core insulation layer is conveniently positioned and installed on the outer surfaces of the two cooling rollers 5. Subsequently, the electric push rod 64 is driven in the reverse direction to move the connecting rod 63 and the two adjusting rack rods 62 upward, so that the two cooling rollers 5 drive the cable core insulation layer to be immersed below the cooling water level in the cooling box 1, thereby achieving rapid cooling of the cable core insulation layer after passing through the cooling box 1.

[0025] Further as Figure 8 and Fig. 9 As shown, it is worth to explain in detail that the elastic rolling member 12 includes a fixed sleeve 121, and the fixed sleeve 121 is provided with a plurality of inner walls fixedly embedded in the rotating gear ring 11 at equal angles, and a telescopic rod 122 is slidably penetrated through the inner wall of each fixed sleeve 121, and a compression spring 123 is provided inside each fixed sleeve 121 and fixed to the opposite surface of the telescopic rod 122 and the fixed sleeve 121; U-shaped frames 124, multiple U-shaped frames 124 are provided and correspond to multiple telescopic rods 122 one by one, the U-shaped frames 124 are fixed to the ends of adjacent telescopic rods 122, and the inner wall of each U-shaped frame 124 is rotatably connected with a roller rod 125; It should be noted that when the cable core insulation layer passes through the center of the plurality of rolling rods 125, the rolling rods 125 and the outer surface of the cable core insulation layer are elastically pressed together by the elastic force of the compression spring 123; It should be noted that when the roller rods 125 reciprocate with the rotating ring gear 11 through the rotating mechanism 13, multiple roller rods 125 synchronously perform circumferential reciprocating rolling treatment on the surface of the cable core insulation layer, thereby forming multiple roller rods 125 to perform a compression stress relief operation on the outer surface of the cable core insulation layer, cooperating with the cable core insulation layer to perform heat treatment stress relief in the heat treatment box 2, thereby improving the stress relief rate of the cable core insulation layer.

[0026] Further as Figure 4 , Figure 5 , Figure 7 , Figure 8 and Fig. 9 As shown, it is worth specifically explaining that the rotating mechanism 13 includes a fixed plate 131, the fixed plate 131 is fixed to the inner wall of the heat treatment box 2, the outer surface of the fixed plate 131 is rotatably connected to a turntable 132, the outer surface of the turntable 132 is fixed to a rotating column 133, the outer periphery of the rotating column 133 is provided with a movable collar 134 slidably connected to the inner wall of the bottom of the heat treatment box 2, the outer surface of the movable collar 134 is fixed to a movable rack rod 135, the movable rack rod 135 is located between the two limiting collars 10 and meshed with the rotating gear ring 11, the end surface of the heat treatment box 2 slides through the limiting rod 136, and the limiting rod 136 is fixed to the outer surface of the movable collar 134; A driving bevel gear 137, the driving bevel gear 137 is coaxially fixed with the pulling roller 7 located below, and a driven bevel gear 138 coaxially fixed with the rotating disk 132 is provided on the outer surface of the fixing plate 131, and the driving bevel gear 137 is meshedly connected with the driven bevel gear 138; It should be noted that, through the meshing transmission of the active bevel gear 137 and the driven bevel gear 138, the turntable 132 and the pulling roller 7 are rotated synchronously, that is, the rotating column 133 is rotated synchronously, and the sliding limit action between the limit rod 136 and the inner wall of the heat treatment box 2 and the movable ring 134 are always located in the rotating column 133, so that the movable ring 134 reciprocates on the inner wall of the heat treatment box 2, driving the movable rack rod 135 to perform synchronous reciprocating movement, and through the meshing transmission of the movable rack rod 135 and the rotating gear ring 11, the rotating gear ring 11 is reciprocated between the two limit rings 10, that is, it drives multiple roller pressure rods 125 to perform circumferential reciprocating rolling on the outer surface of the cable core insulation layer, so that the outer surface of the cable core insulation layer is subjected to a compression stress relief treatment through the multiple roller pressure rods 125.

[0027] Further as Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, it is worth to explain in detail that the mobile wiping mechanism 15 includes an incomplete gear 151, which is coaxially fixed with the pulling roller 7 located above, and a U-shaped rack rod 152 is slidably penetrated through the side wall of the heat treatment box 2, and the incomplete gear 151 is meshedly connected with the U-shaped rack rod 152, and a pulling rod 153 is fixed at the end of the U-shaped rack rod 152, and a sliding groove 154 is provided on the outer surface of the pulling rod 153; The guide grooves 155 are provided with four inclined surfaces at both ends of the cooling box 1. The inner walls of the two wiping rollers 14 are fixed with rotating shafts 156. The two rotating shafts 156 respectively penetrate the two guide grooves 155. The end of one rotating shaft 156 is located inside the slide groove 154. A reverse transmission member 157 is provided between the two rotating shafts 156. It should be noted that the incomplete gear 151 rotates synchronously with the pulling roller 7, and through the meshing transmission between the incomplete gear 151 and the U-shaped rack rod 152, the U-shaped rack rod 152 is made to move back and forth in the heat treatment box 2, that is, it drives the pulling rod 153 to move back and forth synchronously, and because the guide groove 155 limits the rotation shaft 156 and one of the rotation shafts 156 is located in the slide groove 154, the wiping roller 14 fixed thereto is driven to move back and forth along the guide groove 155 in the guide wheel. Through the setting of the reverse transmission member 157, the two wiping rollers 14 are made to move back and forth synchronously in their respective guide grooves 155. The wiping roller 14 can be used to wipe the outer surface of the cable core insulation layer with cooling water, and the wiping roller 14 can be used to wipe the outer surface of the cable core insulation layer by moving, so as to eliminate the axial stress of the outer surface of the cable core insulation layer to a certain extent.

[0028] Further as Figure 6 As shown, it is worth to explain in detail that the reverse transmission member 157 includes a guide block 1571, four guide blocks 1571 are provided and are respectively located at the periphery of the guide groove 155, the four guide blocks 1571 are fixed to the outer surface of the end of the cooling box 1, the inner wall of each guide block 1571 is slidably sleeved with a guide rack 1572, and each rotating shaft 156 is rotatably installed on the inner walls of two guide racks 1572 located at the same position; Reversing gears 1573, two reversing gears 1573 are provided and are rotatably mounted on the two end surfaces of the cooling box 1 respectively, and the reversing gears 1573 are meshingly connected with the two guide racks 1572 located at the same end; It should be noted that when the pulling rod 153 drives the rotating shaft 156 to move in the guide groove 155, the guide rack 1572 is limited by the guide block 1571, and it moves back and forth synchronously with the rotating shaft 156 along the direction of the guide groove 155. Through the reverse meshing transmission action of the reversing gear 1573 and the two guide racks 1572, the two guide racks 1572 are driven to move back and forth in opposite directions, thereby realizing the synchronous reverse reciprocating movement of the two wiping rollers 14.

[0029] Further as Figure 3 , Figure 5 and Figure 7As shown, it is worth specifically explaining that a push-pull plate 16 fixed to the outer surface of the U-shaped rack rod 152 is arranged on the outer side of the conveying roller 3 located inside the heat treatment box 2, and the push-pull plate 16 is slidably connected to the inner wall of the heat treatment box 2, and the bottom outer surface of the push-pull plate 16 is arranged in an inclined slope; It should be noted that when the push-pull plate 16 reciprocates with the U-shaped rack rod 152, it can not only push the cooling water dripping from the surface of the cable core insulation layer to the push-pull plate 16 into the cooling box 1, but also cause the cable core insulation layer in the heat treatment box 2 to change in the space of the rolling part, thereby enhancing the effect of the hot air flow in the heat treatment box 2 and improving the effect of eliminating stress of the heat treatment of the cable core insulation layer in the heat treatment box 2 to a certain extent.

[0030] Further as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, it is worth to explain in detail that the outer side of the push-pull plate 16 is provided with a sealing door 17 which is rotatably opened on the outer surface of the end of the heat treatment box 2, and the outer side of the conveying roller 3 located inside the heat treatment box 2 is provided with a rotating cover plate 18 which is rotatably connected with the top surface of the middle part of the heat treatment box 2; It should be noted that the setting of the sealing door 17 facilitates the cable core insulation layer to pass through the push-pull plate 16 from the conveying roller 3 and extend to the pulling roller 7 and the roller pressure rod 125. A heat pipe connected to the heat treatment box 2 is provided on one side of the sealing door 17 close to the push-pull plate 16; The setting of the rotating cover 18 provides a certain degree of shielding for the heat treatment box 2 near the cooling box 1. Combined with the reciprocating movement of the push-pull plate 16, the volume of the space from the rotating cover 18 to the conveying roller 3 changes, thereby improving the fluidity of the airflow, thereby improving the drying effect of the residual cooling water on the surface of the cable core insulation layer to a certain extent.

[0031] This scheme has the following working process: when the extruded cable core insulation layer is subjected to stress relief treatment, the supply and rotation mechanism 6 is first adjusted to make the two cooling rollers 5 rotate synchronously in the opposite direction, so that the cable core insulation layer passes through the cooling box 1 and passes out of the heat treatment box 2 in turn, and then the supply and rotation mechanism 6 is reversely driven and adjusted to make the cable core insulation layer between the two cooling rollers 5 sink below the cooling water level of the cooling box 1, thereby forming a preparation operation before heat treatment of the cable core insulation layer; The two pulling rollers 7 are driven by the pulling motor 9 and the two transmission gears 8 to rotate synchronously in opposite directions, so that the friction between the insulation layer of the cable core and the two pulling rollers 7 is used for pulling and conveying, thereby accelerating the rate at which the cable core wrapped with the insulation layer passes through the cooling box 1; The wiping mechanism moves synchronously with the rotation of the pulling roller 7, and the reverse transmission of the two wiping rollers 14 is performed through the reverse transmission member 157, so that the two wiping rollers 14 can be synchronously reversed and reciprocated on the top of the cooling box 1, and the outer surface of the cable core insulation layer can be wiped with cooling water by the wiping rollers 14, and the outer surface of the cable core insulation layer can be wiped by the wiping rollers 14, so that the outer surface of the cable core insulation layer can be eliminated to a certain extent. At the same time, the rotating mechanism 13 moves synchronously with the rotation of the pulling roller 7, that is, it drives the gear ring to rotate reciprocatingly on the two limiting rings 10, and the elastic roller pressing part 12 presses the outer surface of the cable core insulation layer, so that the outer surface of the cable core insulation layer is subjected to circumferential compression stress relief treatment through the elastic roller pressing part 12, and the heat treatment box 2 cooperates with the outer surface of the cable core insulation layer to perform heat treatment to eliminate stress, so that the stress relief method of the cable core insulation layer is diverse and its stress relief rate is significantly improved.

[0032] According to the above working process, it can be known that: by setting the feeding and transferring mechanism 6, the outer surface of the cable core insulation layer can quickly pass from the cooling box 1 to the heat treatment box 2, thereby improving the convenience of stress relief of the cable core insulation layer in the heat treatment box 2; By driving the pulling motor 9, the two pulling rollers 7 rotate synchronously in opposite directions, and the friction between the cable core insulation layer and the two pulling rollers 7 is used for pulling and conveying, thereby accelerating the rate at which the cable core wrapped with the insulation layer passes through the cooling box 1. Through the cooperation between the pulling rollers 7 and the wiping mechanism, the two wiping rollers 14 perform a mobile wiping treatment of the outer surface of the cable core insulation layer with cooling water, and at the same time, a certain degree of axial stress relief treatment is performed on the outer surface of the cable core insulation layer. Through the cooperation of the pulling rollers 7 and the rotating mechanism 13, and the compression effect of the elastic roller pressure piece 12 on the outer surface of the cable core insulation layer, the outer surface of the cable core insulation layer is subjected to circumferential compression stress relief treatment by the elastic roller pressure piece 12, and the heat treatment box 2 is used to perform heat treatment on the outer surface of the cable core insulation layer to eliminate stress, so that the stress relief method of the cable core insulation layer is diverse and its stress relief rate is significantly improved.

[0033] A method for processing explosion-proof cables, using explosion-proof cable processing equipment, comprises the following steps: S1. Wire core manufacturing: The raw materials of the cable core are melted and made into metal monofilaments through a wire drawing process, and the made metal monofilaments are twisted into a core; It should be noted that the raw materials of the cable core can be high-purity aluminum wire or copper wire; S2, insulation layer wrapping: 1. The screw is rotated in the heated machine cylinder to squeeze the plastic sent from the hopper forward, so that the plastic is evenly plasticized, and the plastic is squeezed into a continuous plastic layer through the machine head and the mold, and then squeezed onto the outer surface of the wire core to form an insulation layer wrapping the wire core; Second, the wire core wrapped with the insulation layer is adjusted by the feeding and rotating mechanism 6 so that the wire core wrapped with the insulation layer passes through the cooling box 1 for cooling and shaping treatment, and then passes through the heat treatment box 2. Through the driving of the pulling motor 9 and the pulling treatment of the pulling roller 7, the moving wiping mechanism 15 and the rotating mechanism 13 are synchronously driven to move synchronously, that is, the two wiping rollers 14 and the multiple elastic rolling parts 12 are driven to reciprocate on the surface of the insulation layer, so as to achieve reciprocating wiping of the surface of the insulation layer of the wire core and diversified stress elimination treatment; It should be noted that the cable core can also be plated after the insulation layer is wrapped, that is, the outer surface of the insulation layer is plated, such as electroplating zinc-nickel alloy plating, to improve the corrosion resistance and structural strength of the cable; S3, explosion-proof layer package: The wire core wrapped with the insulating layer after the stress relief treatment in step S2 is wrapped with the first composite explosion-proof layer, the shielding layer and the second composite explosion-proof layer in sequence to form explosion-proof protection for the cable surface; It should be noted that the first composite explosion-proof layer and the second composite explosion-proof layer are both for enhancing the safety of the cable in a specific environment (such as an explosive environment), and special composite materials can be used, which have the properties of impact resistance and fire resistance, and the specific wrapping technology includes wrapping or lamination; The shielding layer is usually used to reduce electromagnetic interference and radio frequency interference. It can be made of metal foil or woven metal mesh and wrapped around the insulation layer of the cable. S4, outer sheath package: Wrapping the outer surface of the second composite explosion-proof layer in step S3 with an outer sheath to complete the processing of the explosion-proof cable; It should be noted that the outer sheath wrapping treatment is to provide additional protection for the cable to prevent damage to the cable from the external environment.

[0034] The electric push rod 64 and the pulling motor 9 can both be purchased from the market and equipped with a separate power supply. They are mature technologies in this field and have been fully disclosed, so they will not be repeated in the specification.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An explosion-proof cable processing device, comprising a cooling box (1) and a heat treatment box (2) fixed to one side of the top surface of the cooling box (1), characterized in that: Also includes: Conveying rollers (3), two conveying rollers (3) are provided and are rotatably mounted on the top surface of the cooling box (1) and the bottom inner wall of the heat treatment box (2), respectively; the inner wall of the cooling box (1) is rotatably connected to four rotating rods (4) distributed in a rectangular shape; a cooling pressing roller (5) is rotatably connected between two rotating rods (4) located on the same side; a rotation supply mechanism (6) for synchronously rotating the four rotating rods (4) is provided in the middle of the cooling box (1); A pulling roller (7), wherein two pulling rollers (7) are provided and are rotatably mounted on the inner wall of the heat treatment box (2) in an upper and lower distribution. Transmission gears (8) are coaxially fixed to the outer ends of the two pulling rollers (7). The two transmission gears (8) are meshingly connected. A pulling motor (9) coaxially connected to one of the pulling rollers (7) is provided at the outer end of the heat treatment box (2). Two limiting collars (10) are arranged on the outer side of the pulling roller (7) and are distributed in parallel and fixed to the inner wall of the bottom of the heat treatment box (2). A rotating gear ring (11) is rotatably sleeved between the two limiting collars (10). A plurality of uniformly distributed elastic rolling parts (12) are arranged inside the rotating gear ring (11). A rotating mechanism (13) cooperating with the pulling roller (7) is arranged on the periphery of the rotating gear ring (11); Wiping rollers (14), two wiping rollers (14) are provided and both wiping rollers (14) are arranged obliquely on the inner wall of one side of the cooling box (1) close to the heat treatment box (2), and a movable wiping mechanism (15) cooperating with the pulling roller (7) is arranged between the two wiping rollers (14); The elastic rolling member (12) comprises: A fixed sleeve (121), the fixed sleeve (121) being provided with a plurality of inner walls fixedly embedded in the rotating gear ring (11) at equal angles, the inner walls of the fixed sleeve (121) being slidably penetrated by telescopic rods (122), and each fixed sleeve (121) being provided with a compression spring (123) fixed to the opposite surfaces of the telescopic rod (122) and the fixed sleeve (121); A U-shaped frame (124) is provided with a plurality of U-shaped frames (124) corresponding one to one with the plurality of telescopic rods (122); the U-shaped frame (124) is fixed to the ends of adjacent telescopic rods (122); and the inner wall of each U-shaped frame (124) is rotatably connected to a roller pressure rod (125).

2. The explosion-proof cable processing equipment according to claim 1, characterized in that: The transfer mechanism (6) comprises: Rotating gears (61), four rotating gears (61) are provided and are coaxially fixed to the ends of the four rotating rods (4), respectively, and an adjusting rack rod (62) is meshed and connected between two rotating gears (61) located at the same end; A connecting rod (63) is fixed to the top ends of the two adjusting rack rods (62); an electric push rod (64) is fixed to the outer end surface of the cooling box (1); and an output end of the electric push rod (64) is fixed to the bottom surface of the connecting rod (63).

3. The explosion-proof cable processing equipment according to claim 1, characterized in that: The rotating mechanism (13) comprises: A fixed plate (131), the fixed plate (131) is fixed to the inner wall of the heat treatment box (2), the outer surface of the fixed plate (131) is rotatably connected to a turntable (132), the outer surface of the turntable (132) is fixed to a rotating column (133), the outer periphery of the rotating column (133) is provided with a movable sleeve (134) slidably connected to the inner wall of the bottom of the heat treatment box (2), the outer surface of the movable sleeve (134) is fixed to a movable rack rod (135), the movable rack rod (135) is located between the two limit sleeves (10) and is meshed with the rotating gear ring (11), the end surface of the heat treatment box (2) slides through the limit rod (136), and the limit rod (136) is fixed to the outer surface of the movable sleeve (134); A driving bevel gear (137) is coaxially fixedly arranged with the pulling roller (7) located below, and a driven bevel gear (138) coaxially fixed with the rotating disk (132) is arranged on the outer surface of the fixing plate (131), and the driving bevel gear (137) is meshingly connected with the driven bevel gear (138).

4. The explosion-proof cable processing equipment according to claim 1, characterized in that: The mobile wiping mechanism (15) comprises: An incomplete gear (151), the incomplete gear (151) is coaxially fixedly arranged with a pulling roller (7) located above, a U-shaped rack rod (152) is slidably penetrated through the side wall of the heat treatment box (2), the incomplete gear (151) is meshingly connected with the U-shaped rack rod (152), a pulling rod (153) is fixed at the end of the U-shaped rack rod (152), and a sliding groove (154) is provided on the outer surface of the pulling rod (153); The guide groove (155) is provided with four inclined surfaces at both ends of the cooling box (1), the inner walls of the two wiping rollers (14) are fixed with rotating shafts (156), the two rotating shafts (156) respectively penetrate the two guide grooves (155), the end of one of the rotating shafts (156) is located inside the slide groove (154), and a reverse transmission member (157) is provided between the two rotating shafts (156).

5. The explosion-proof cable processing equipment according to claim 4, characterized in that: The reverse transmission member (157) comprises: Guide blocks (1571), four guide blocks (1571) are provided and are respectively located on the periphery of the guide groove (155), the four guide blocks (1571) are all fixed to the outer surface of the end of the cooling box (1), the inner wall of each guide block (1571) is slidably sleeved with a guide rack (1572), and each rotating shaft (156) is rotatably mounted on the inner walls of two guide racks (1572) located at the same position; A reversing gear (1573), wherein two reversing gears (1573) are provided and are rotatably mounted on the two end surfaces of the cooling box (1), respectively, and the reversing gear (1573) and the two guide racks (1572) located at the same end are both meshingly connected.

6. The explosion-proof cable processing equipment according to claim 4, characterized in that: A push-pull plate (16) fixed to the outer surface of the U-shaped rack rod (152) is arranged on the outer side of the conveying roller (3) located inside the heat treatment box (2); the push-pull plate (16) is slidably connected to the inner wall of the heat treatment box (2); and the bottom outer surface of the push-pull plate (16) is arranged in an inclined slope.

7. The explosion-proof cable processing equipment according to claim 6, characterized in that: The outer side of the push-pull plate (16) is provided with a sealing door (17) rotatably opened on the outer surface of the end of the heat treatment box (2), and the outer side of the conveying roller (3) located inside the heat treatment box (2) is provided with a rotating cover plate (18) rotatably connected to the top surface of the middle part of the heat treatment box (2).

8. A method for processing explosion-proof cables, using the explosion-proof cable processing equipment according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Wire core manufacturing: The raw materials of the cable core are melted and made into metal monofilaments through a wire drawing process, and the made metal monofilaments are twisted into a core; S2, insulation layer wrapping:

1. The screw is rotated in the heated machine cylinder to squeeze the plastic sent from the hopper forward, so that the plastic is evenly plasticized, and the plastic is squeezed into a continuous plastic layer through the machine head and the mold, and then squeezed onto the outer surface of the wire core to form an insulation layer wrapping the wire core; Second, the wire core wrapped with the insulation layer is adjusted by the supply and rotation mechanism (6) so that the wire core wrapped with the insulation layer passes through the cooling box (1) for cooling and shaping treatment, and then passes through the heat treatment box (2). Through the drive of the pulling motor (9) and the pulling treatment of the pulling roller (7), the moving wiping mechanism (15) and the rotating mechanism (13) are synchronously driven to move synchronously, that is, the two wiping rollers (14) and the plurality of elastic roller pressing members (12) are driven to reciprocate on the surface of the insulation layer, thereby achieving reciprocating wiping of the surface of the insulation layer of the wire core and diversified stress relief treatment; S3, explosion-proof layer package: The wire core wrapped with the insulating layer after the stress relief treatment in step S2 is wrapped with the first composite explosion-proof layer, the shielding layer and the second composite explosion-proof layer in sequence to form explosion-proof protection for the cable surface; S4, outer sheath package: The outer surface of the second composite material explosion-proof layer in step S3 is wrapped with an outer sheath to complete the processing of the explosion-proof cable.

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