CN112712923B - Preparation method of coupling type new energy electric automobile charging pile cable - Google Patents
Preparation method of coupling type new energy electric automobile charging pile cable Download PDFInfo
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- CN112712923B CN112712923B CN202011533057.XA CN202011533057A CN112712923B CN 112712923 B CN112712923 B CN 112712923B CN 202011533057 A CN202011533057 A CN 202011533057A CN 112712923 B CN112712923 B CN 112712923B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0003—Apparatus or processes specially adapted for manufacturing conductors or cables for feeding conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0036—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/187—Sheaths comprising extruded non-metallic layers
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Abstract
The invention provides a preparation method of a coupling type new energy electric automobile charging pile cable, which comprises a functional wire core, an inner sheath and an outer sheath, wherein the functional wire core is coated in the inner sheath, the inner sheath is coated in the outer sheath, the outer sheath is made of a foaming elastomer material, and the outer sheath is foamed by heating in sections to form a coupling type structure. The electric vehicle charging pile cable disclosed by the invention forms a coupling chain pile structure, and the extrusion resistance and bending resistance of the cable are improved.
Description
Technical Field
The invention belongs to the technical field of electric automobile charging cables, and particularly relates to a coupling type new energy electric automobile charging pile cable and double-layer co-extrusion segmented foaming equipment.
Background
With the development of society, the global energy crisis is continuously aggravated, petroleum resources are gradually exhausted, atmospheric pollution and global warming are increasingly serious, and the energy crisis and the environmental crisis are aggravated when an automobile is used as an indispensable vehicle for people to go out and is usually driven by oil burning. Therefore, the automobile industry provides new energy electric automobiles, oil burning can be avoided or reduced, environmental protection is facilitated, the crisis of shortage of traditional energy is relieved, and the new energy electric automobiles have wide market development prospects.
The charging cable of the electric automobile is used as an indispensable charging accessory of the electric automobile, and has a very wide market development prospect. On one hand, along with the acceleration of the life rhythm of people, the charging cable of the electric automobile is required to have the performance of quick charging. On the other hand, with the application of new energy electric vehicles (including environment-friendly and energy-saving electric vehicles and hybrid electric vehicles) becoming more and more extensive, the charging cable for the charging station is used more and more, and when a plurality of electric vehicles are charged, the charging cable can be frequently dragged, bent or extruded, but the charging cable is in a shape like a Chinese character 'yi', and the thickness of each part of the cable is consistent, so that the bending resistance and the extrusion resistance of the cable are lower, and the service life of the cable is short.
Disclosure of Invention
In order to solve the technical problems of low bending resistance and low extrusion resistance of cables caused by consistent thickness of the charging pile cables of the electric automobile in the prior art, the invention provides a coupled new energy electric automobile charging pile cable and double-layer co-extrusion segmented foaming equipment of the cable.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a coupling type new forms of energy electric automobile fills electric pile cable, includes function sinle silk, inner sheath and oversheath, the cladding of function sinle silk is in the inner sheath, the inner sheath cladding is in the oversheath, the oversheath adopts the foaming elastomer material, just the oversheath adopts the segmentation heating foaming, forms coupling type structure.
Further, in the preparation process, the inner sheath and the outer sheath are prepared by a double-layer co-extrusion process.
Further, the inner sheath is made of polyurethane elastomer material.
A double-layer co-extrusion sectional foaming device comprises an extrusion device and a sectional heating device;
the extrusion device comprises a double-layer co-extrusion machine head with the following structure, wherein the double-layer co-extrusion machine head comprises a machine head seat, an inner mold core and a mold sleeve; the machine head seat is provided with three feed inlets which are respectively an inner sheath material feed inlet, a foaming material feed inlet and a non-foaming material feed inlet, an inner sheath material feed channel, a foaming material feed channel and a non-foaming material feed channel are respectively and correspondingly arranged in the machine head seat, the side wall of the foaming material feed channel is provided with an opening I, the side wall of the non-foaming material feed channel is provided with an opening II, two openings are provided with movable plugs, one end of each movable plug can block the opening I, the other end of each movable plug can block the opening II, and the movable plugs are connected with a transmission mechanism to reciprocate left and right; the transmission mechanism comprises a rack I, a rack II, a gear I and a gear II, a connecting piece is fixed on the non-tooth surface of the rack, two ends of the connecting piece are arranged in a limiting groove in the vertical direction of the inner wall of the headstock, the rack II is fixed on the upper surface of the movable plug, the gear I and the gear II rotate coaxially, two ends of a rotating shaft of the gear I and the gear II are fixed in the headstock through bearings, the rack I is meshed with the gear I, and the rack II is meshed with the gear II; the top end of the connecting piece is connected with a first rocker, the first rocker is connected with a first crank, a first driven gear and the first crank share a rotating shaft, the first driven gear is meshed with a first driving gear, the first driving gear is a gap gear, two sections of teeth are arranged on the first driving gear, and the arc length of each section of teeth is equal to one half of the circumference of the first driven gear; the first driving gear is coaxial with the first belt pulley, and the first belt pulley is connected with the driving gear through a belt;
the inner film core is provided with a conical head and is fixedly connected with the head seat, the inner film core is fixed in the head seat, a die sleeve is fixed in the discharge port end of the head seat, and the die sleeve and the inner die core are positioned on the same central line to form a double-layer co-extrusion head outlet forming die;
the segmented heating device comprises a heating sleeve and a transmission assembly, the heating sleeve consists of a first heating half sleeve and a second heating half sleeve, a first sliding block is arranged at the top end of the first heating half sleeve, and a second sliding block is arranged at the top end of the second heating half sleeve;
the transmission device comprises a first connecting rod, a second connecting rod, a third connecting rod, a limiting plate, a second rocker, a second crank, a second driven gear wheel, a second driving gear and a second belt pulley, a limiting groove is formed in the limiting plate, the first connecting rod is connected with a first sliding block, the second connecting rod is connected with a second sliding block, the first connecting rod and the second connecting rod are rotatably connected through a connecting column, the third connecting rod is arranged in the limiting groove of the limiting plate, one end of the third connecting rod is connected with the connecting column, and the other end of the third connecting rod is connected with the second crank through the second rocker; the second driven gear and the second crank rotate coaxially, the second driving gear is a clearance gear, two sections of teeth are arranged on the second driving gear, the arc length of each section of teeth is equal to one half of the circumference of the second driven gear,
the toothed part of the second driving gear is meshed with the driven gear; the second belt pulley is coaxial with the second driving gear, the second belt pulley is connected with the driving wheel, and the radius of the first belt pulley is the same as that of the second belt pulley.
Furthermore, a third sliding block is arranged on the bottom surface of the first heating half sleeve, a fourth sliding block is arranged on the bottom surface of the second heating half sleeve, the sectional heating device further comprises a fixing mechanism, the fixing mechanism comprises a first panel, a second panel and a supporting rod, and the first panel and the second panel are fixedly connected through the supporting rod; the first panel is provided with a sliding groove, the second panel is provided with a sliding groove, the first sliding block and the second sliding block are arranged in the first sliding groove, the third sliding block and the fourth sliding block are arranged in the second sliding groove, and the lower end of the limiting plate is fixed on the upper surface of the first panel. The third slider, the fourth slider and the fixing mechanism are additionally arranged, so that the stability of the heating sleeve in the opening and closing process is improved.
Furthermore, the heating jacket is internally shaped like a cross, wherein the fields of one 'at two ends are non-heating sections, and the field of I' at the middle part is a heating section.
Furthermore, the double-layer co-extrusion sectional type foaming equipment also comprises a traction device
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the coupled new energy electric vehicle charging pile cable, the outer sheath is made of a novel foaming elastomer material, and a segmented foaming technology is adopted, so that the outer sheath is foamed and expanded in a segmented manner to form a coupled chain pile structure, and the extrusion resistance and bending resistance of the cable are improved; the outer sheath is made of a novel foaming elastomer material, so that the extrusion resistance of the cable is improved.
(2) The double-layer co-extrusion segmented foaming equipment disclosed by the invention realizes segmented foaming of the cable, and realizes linkage action among devices through interaction among transmission mechanisms in the equipment, so that the charging pile cable of the new energy electric automobile with a coupling type chain pile structure is obtained by firstly feeding and then heating for foaming under the condition of using one power output device.
Drawings
FIG. 1 is a schematic structural view of a cable according to the present invention;
FIG. 2 is a schematic view of a double-layer co-extrusion segmented foaming apparatus according to the present invention;
FIG. 3 is a schematic view showing the structure and connection relationship between the feed adjusting mechanism and the sectional heating device;
FIG. 4 is a schematic view of a model of the interior of the segmented heating jacket;
FIG. 5 is a schematic view of a draft gear;
in the figure, 101-headstock, 102-inner film core, 103-die sleeve, 104-inner sleeve material feed inlet, 105-foaming material feed inlet, 106-non-foaming material feed inlet, 107-inner sleeve material feed channel, 108-foaming material feed channel, 109-non-foaming material feed channel, 110-movable plug, 111-rack I, 112-rack II, 113-gear I, 114-gear II, 115-connecting piece, 116-first rocker, 117-first crank, 118-first driven gear, 119-first driving gear, 120-first belt pulley, 2-segmented heating device, 201-first heating half sleeve, 202-second heating half sleeve, 203-first slide block, 204-second slide block, 205-first connecting rod, 206-a second connecting rod, 207-a third connecting rod, 208-a limiting plate, 209-a second rocker, 210-a second crank, 211-a second driven gear, 212-a second driving gear, 213-a third slider, 214-a fourth slider, 215-a first panel, 216-a second panel, 217-a supporting rod, 218-a second belt pulley, 3-a driving wheel, 401-a third driven gear, 402-a third driving gear, 403-a third belt pulley, 404-a fifth belt pulley, 405-a traction roller, 406-a traction tooth and 407-a fourth belt pulley.
Detailed Description
The present invention will be further described with reference to the following examples, which are intended to illustrate only some, but not all, of the embodiments of the present invention. All other embodiments that can be obtained by a person skilled in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.
Examples
The utility model provides a coupling type new forms of energy electric automobile fills electric pile cable, includes function sinle silk, inner sheath and oversheath, the cladding of function sinle silk is in the inner sheath, the inner sheath cladding is in the oversheath, inner sheath and oversheath are double-deck coextrusion technology preparation, the inner sheath adopts polyurethane elastomer material, the oversheath adopts foaming elastomer material, and the oversheath adopts the segmentation heating foaming, forms coupling type structure, as shown in figure 1, polyurethane elastic material and oversheath foaming elastic material that the inner sheath used are the market purchase, wherein the ratio of the length of foaming section to the length of non-foaming section is 1: 1.
The electric automobile charging pile cable disclosed by the invention is compared with a commercially available electric automobile charging pile cable in an anti-extrusion test, and the test method is the method specified in GB/T33594-2017.
The comparison results are shown in table 1. As can be seen from the data in Table 1, the extrusion resistance of the present invention is acceptable, and the minimum average extrusion force of the present invention is much larger than that of the same commercial products.
TABLE 1
| Cable type | Resistance to extrusion forces |
| Invention (4 mm)2＜S≤35mm2) | 14.3KN, pass |
| Commercial product (4 mm)2＜S≤35mm2) | 11.5KN, pass |
The coupled new energy electric vehicle charging pile cable is prepared by the following double-layer co-extrusion sectional type foaming equipment.
As shown in fig. 2 and 3, a double-layer co-extrusion sectional type foaming device comprises an extrusion device and a sectional heating device 2; the extrusion device comprises a double-layer co-extrusion machine head with the following structure, wherein the double-layer co-extrusion machine head comprises a machine head seat 101, an inner mold core 102 and a mold sleeve 103; the machine head seat 101 is provided with three feed inlets, namely an inner sheath material feed inlet 104, a foaming material feed inlet 105 and a non-foaming material feed inlet 106, and the interior of the machine head seat 101 is correspondingly provided with an inner sheath material feed channel 107, a foaming material feed channel 108 and a non-foaming material feed channel 109; a feeding adjusting mechanism is arranged in the headstock 1 between the foaming material feeding channel 108 and the non-foaming material feeding channel 109, the feeding adjusting mechanism comprises a movable plug 110 and a transmission mechanism, an opening I is formed in the side wall of the foaming material feeding channel 108, an opening II is formed in the side wall of the non-foaming material feeding channel 109, the opening I and the opening II are arranged at the same height, the movable plug 110 is arranged between the opening I and the opening II, one end of the movable plug 110 can block the opening I, the other end of the movable plug 110 can block the opening II, and the movable plug 110 is connected with the transmission mechanism to reciprocate left and right;
as shown in fig. 3, the transmission mechanism includes a rack i 111, a rack ii 112, a gear i 113 and a gear ii 114, a connecting piece 115 is fixed to the rack i 111 without a tooth surface, two ends of the connecting piece 115 are arranged in a limiting groove in the vertical direction of the inner wall of the headstock, the rack ii 112 is fixed to the upper surface of the movable plug 110, the gear i 113 and the gear ii 114 rotate coaxially, two ends of a rotating shaft of the gear i 113 and the gear ii 114 are fixed in the headstock 101 through a bearing, the rack i 111 is engaged with the gear i 113, and the rack ii 112 is engaged with the gear ii 114; the top end of the connecting piece 115 is connected with a first rocker 116, the first rocker 116 is connected with a first crank 117, a first driven gear 118 and the first crank 117 are coaxial, the first driven gear 118 is meshed with a first driving gear 119, the first driving gear 119 is a gap gear, two sections of teeth are arranged on the first driving gear 119, and the arc length of each section of teeth is equal to half of the circumference of the first driven gear 118; the first driving gear 119 is coaxial with the first belt pulley 120, and the first belt pulley 120 is connected with the driving gear 3 through a belt;
as shown in fig. 2, the inner film core 102 has a conical head, the inner film core 102 is fixedly connected with the headstock 101, the inner film core is fixed inside the headstock, a die sleeve 103 is fixed inside a discharge port end of the headstock 101, the die sleeve 103 and the inner film core 102 are located on the same central line, and a double-layer co-extrusion handpiece outlet forming die is formed;
as shown in fig. 3, the segmented heating device 2 comprises a heating jacket and a transmission assembly, the heating jacket is composed of a first heating half jacket 201 and a second heating half jacket 202, the inside of the heating jacket is in a cross shape as shown in fig. 4, wherein, one fields at two ends are non-heating sections, one field at the middle part is a heating section, the inside of the heating jacket is designed into a cross shape, and the shaping of a foaming section and a non-foaming section of the outer sheath of the cable is facilitated; a first sliding block 203 is arranged at the top end of the first heating half sleeve 201, and a second sliding block 204 is arranged at the top end of the second heating half sleeve 202; the transmission device comprises a first connecting rod 205, a second connecting rod 206, a third connecting rod 207, a limiting plate 208, a second rocker 209, a second crank 210, a second driven gear wheel 211, a second driving gear 212 and a second belt wheel 218, wherein the limiting plate 208 is provided with a limiting groove, the first connecting rod 205 is connected with a first slider 203, the second connecting rod 206 is connected with a second slider 204, the first connecting rod 205 and the second connecting rod 206 are rotationally connected through a connecting column, the third connecting rod 207 is arranged in the limiting groove of the limiting plate 208, one end of the third connecting rod 207 is connected with the connecting column, the other end of the third connecting rod 207 is connected with the second crank 210 through the second rocker 209, the second driven gear 211 and the second crank 210 coaxially rotate, the second driving gear 212 is a gap gear, two sections of teeth are arranged on the second driving gear 212, the arc length of each section of teeth is equal to half of the circumference length of the second driven gear 211, the toothed part of the second driving gear 212 is engaged with the driven gear 211; the second belt pulley 218 is coaxial with the second driving gear 212, the second belt pulley 218 is connected with the driving wheel 3, and the radii of the first belt pulley 120 and the second belt pulley 218 are the same;
the rotating shafts of the first crank 117 and the first driven gear 118 may be fixed on a frame, the rotating shafts of the first driving gear 119 and the first pulley 120 may be fixed on the frame, the rotating shafts of the second crank 210 and the second driven gear 211 may be fixed on the frame, the rotating shafts of the second driving gear 212 and the second pulley 218 may be fixed on the frame, and the rotating shaft of the driving pulley 3 may be fixed on the frame, which is not shown in the drawings.
The working process of the application is as follows: when in use, the equipment is arranged on the existing extruder, and is respectively connected with the raw materials of the inner sheath and the outer sheath; the working process of the invention comprises a moving section and a heating section, wherein the cable is dragged and moved in the moving section, and the double-layer co-extrusion machine head coats an inner sheath material and an outer sheath material on a cable core in the moving process, wherein the inner sheath material is continuously fed, the outer sheath material is sectionally fed, specifically, one section of the inner sheath material is a non-foaming material, and the other section of the outer sheath material is a foaming material, the foaming material and the non-foaming material are the same in base material, no foaming agent is contained in the non-foaming material, a foaming agent is contained in the two foaming materials, and the specific process is that the inner sheath material is continuously coated on the cable core in the cable dragging process, when the outer sheath material is coated, the non-foaming material is coated firstly, then the foaming material is coated, then the non-foaming material is coated, so that the inner sheath material is continuously coated, and the outer sheath material is divided into three sections, namely, the non-foaming material section and the non-foaming material section, finally, drawing the cable subjected to feeding into a heating sleeve, and heating and foaming; in the heating section, the cable is static, the outer sheath is heated and foamed, and the outer sheath is made of a non-foaming material, a foaming material and a non-foaming material, so that only the foaming material section can really realize foaming in the heating process, but the non-foaming material section cannot foam, after the heating is finished, the moving section of the next period is carried out, namely the inner sheath material and the outer sheath material are continuously coated, and meanwhile, the foamed outer sheath is cooled and shaped; the resulting segmented foamed cable is shown in fig. 1, which is a cable that completes two cycles of foaming in fig. 1.
The specific working process is as follows:
as shown in fig. 3, the angle between two sections of teeth of the first driving gear 119 is 90 ° (the angle between two sections of teeth is determined according to the relationship between the heating time and the charging time, and the angle is 90 °, specifically, the heating time is equal to the charging time), at this time, the first rocker 116 is at the lowest position, the movable plug 110 is at the closing position of the opening i and at the opening position of the opening ii (i.e., the foaming material feeding passage 108 is closed and the non-foaming material feeding passage 109 is open), and the movable plug 110 is at the stationary state until the teeth of the first driving gear 119 contact the first driven gear 118 (in this process, the non-foaming material feeding and foaming heating stages are included); the driving wheel 3 is connected with the output end of the motor, the driving wheel 3 rotates to drive the first belt pulley 120 to rotate, and the first belt pulley 120 drives the first driving gear 119 coaxial with the first belt pulley to rotate; when the teeth of the first driving gear 119 rotate to be meshed with the first driven gear 118 and leave the first driven gear 118, the arc length of the teeth is equal to half of the circumference of the first driven gear 118, so that the first driven gear 118 rotates for half a circle, the first crank 117 rotates for half a circle, the first rocker 116 rotates from the lowest point to the highest point, and at the moment, due to the transmission action among the rack I111, the rack II 112, the gear I113 and the gear II 114, the movable plug 110 realizes the opening of the opening I and the closing of the opening II (namely the foaming material feeding channel 108 is opened and the non-foaming material feeding channel 109 is closed); when the first driving gear 119 rotates to the next section of toothless gap, it is in the moving section;
as shown in fig. 3, an included angle between two end teeth of the second driving gear 212 is 180 °, at this time, the second rocking bar 209 is at the lowest position, and the heating jacket is in an open state; the driving wheel 3 rotates to drive the second belt pulley 218 to rotate, the second driving gear 212 coaxial with the second belt pulley 218 rotates, when the second driving gear 212 rotates to a state that a toothed part of the second driving gear 212 is meshed with the second driven gear 211 and a toothed part of the second driven gear 211 leaves the second driven gear 211, the second driven gear 211 rotates for a half circle, so that the second crank 210 is driven to rotate, the second rocker 209 is driven to rotate from the highest point to the lowest point, the heating sleeve is closed, and the heating sleeve heats and foams cables in the heating sleeve; when the second driving gear 212 rotates to complete one gap section, the heating sleeve completes heating foaming; when the second driving gear 212 rotates to the point that the next toothed part is meshed with the second driven gear 211 and the toothed part is separated from the second driven gear 211, the heating jacket is opened, the next period is started, the cable is pulled out of the heating jacket in the opening state of the heating jacket, and a new cable core is continuously coated in the pulling process, so that continuous production is realized; the radius of the first belt pulley 120 is the same as that of the second belt pulley 218, so that the rotating speed of the first belt pulley 120 is the same as that of the second belt pulley 218, and the switching period of the movable plug 110 completely corresponds to the opening and closing period of the heating sleeve through the linkage of the transmission device and the transmission mechanism, so that the cable is prepared through continuous sectional heating foaming.
Further, a third sliding block 213 is arranged on the bottom surface of the first heating half-sleeve 201, a fourth sliding block 214 is arranged on the bottom surface of the second heating half-sleeve 202, the segmented heating device further comprises a fixing mechanism, the fixing mechanism comprises a first panel 215, a second panel 216 and a supporting rod 217, and the first panel 215 and the second panel are fixedly connected through the supporting rod 217; the first panel 215 is provided with a sliding groove, the second panel 216 is provided with a sliding groove, the first sliding block 203 and the second sliding block 204 are arranged in the first sliding groove, the third sliding block 213 and the fourth sliding block 214 are arranged in the second sliding groove, and the lower end of the limiting plate 208 is fixed on the upper surface of the first panel 215. The third slider, the fourth slider and the fixing mechanism are additionally arranged, so that the stability of the heating sleeve in the opening and closing process is improved.
Further, the double-layer co-extrusion sectional foaming equipment further comprises a traction device, wherein the traction device comprises a third driven gear 401, a third driving gear 402 and a group of traction rollers 405, the third driving gear 402 is a gap gear, the circumference of the third driving gear 402 is divided into two sections, one section is a toothed part and the other section is a non-toothed part, the toothed part of the third driving gear 402 is meshed with the third driven gear 401, the third driving gear 402 and a third belt pulley 403 coaxially rotate, the third belt pulley 403 is connected with a driving gear 3 through a belt, and the third belt pulley 403, the first belt pulley 120 and the second belt pulley 218 have the same radius; the fourth belt pulley 407 and the third driven gear 401 rotate coaxially, the fourth belt pulley 407 and the fifth belt pulley 404 are linked by a belt, the fifth belt pulley 404 and the traction roller 405 rotate coaxially, the traction roller 405 is provided with traction teeth 406, and another traction roller used in cooperation with the traction roller 405 can be connected with the driving wheel 3 by a group of transmission mechanisms identical to the above transmission mechanisms. As shown in fig. 5, the cable is in the middle of a group of pulling rollers 405, the concave part between adjacent pulling teeth 406 is clamped on the unfoamed section of the cable, and the length of the pulling teeth 406 and the length between two adjacent pulling teeth can be specifically set according to the sizes of the foamed section and the unfoamed section of the cable; in the rotation process of the group of traction teeth 405, the traction teeth 406 drive the cable to advance to realize traction; the radii of the third belt pulley 403, the first belt pulley 120 and the second belt pulley 218 are the same, so that the linkage between the traction device and the previous charging and heating foaming is realized, and the continuous operation of charging, heating foaming and traction movement is realized; the central angles of the toothed section and the non-toothed section of the third driving gear 402 may be set according to the heating time.
In the whole equipment, the first driving gear 119, the second driving gear 212 and the third driving gear 402 are used for controlling the period, the first belt pulley 120, the second belt pulley 218 and the third belt pulley 403 are all connected with the driving wheel 3, and the radiuses of the first belt pulley 120, the second belt pulley 218 and the third belt pulley 403 are the same, so that in use, the extruding device, the segmented heating device and the traction device are mutually matched through the linkage effect of various transmission mechanisms;
in one period, the driving wheel 3 rotates, the third driving gear 403 rotates, when the toothed part of the third driving gear is meshed with the third driven gear 401 to leave, the third driven gear 401 rotates, so as to drive the fourth belt pulley 407 to rotate, finally the traction roller 405 rotates, the cable moves forwards, the cable core is coated with the inner sheath material all the time in the cable moving process, the outer sheath material is coated with the non-foaming material firstly, then coated with the foaming material and then coated with the non-foaming material, so that the inner sheath material is coated all the time, the outer sheath material is divided into three sections, namely a non-foaming material section, a foaming material section and a non-foaming material section, when the toothed part of the third driving gear 403 is separated from the third driven gear 401, the third driven gear 401 stops rotating, so that the cable stops advancing, namely feeding is finished, and at this time, the cable to be heated and foamed is already pulled into the heating sheath, heating and foaming the mixture by a heating sleeve; in the heating section, the toothed part of the third driving gear 403 is not engaged with the third driven gear 401, and the cable is still, because the outer sheath is made of non-foaming material, foaming material and non-foaming material, only the foaming material section can really realize foaming in the heating process, and the non-foaming material section cannot foam; after heating is completed, the heating jacket is opened, the toothed part of the third driving gear 403 is meshed with the third driven gear 401 again, the moving section of the next period is carried out, the traction device is used for drawing the cooled and molded cable, so that the cable to be heated and foamed at the rear section of the cable is pulled to enter the heating jacket, namely, the inner jacket material and the outer jacket material are continuously coated, and meanwhile, the foamed cable is cooled and molded; the resulting segmented foamed cable is shown in fig. 1, which is a cable that completes two cycles of foaming in fig. 1.
Claims (6)
1. The preparation method of the coupled new energy electric vehicle charging pile cable is characterized in that the cable comprises a functional wire core, an inner sheath and an outer sheath, wherein the functional wire core is coated in the inner sheath, the inner sheath is coated in the outer sheath, the outer sheath is made of a foamed elastomer material, the outer sheath is foamed in a segmented heating mode to form a coupled structure, and the inner sheath and the outer sheath are prepared through a double-layer co-extrusion process in the preparation process;
the preparation method comprises the following steps: the moving section and the heating section form a processing period, and the whole preparation process comprises a plurality of processing periods; in the moving section, the cable is pulled by a traction device to move, and in the moving process, a double-layer co-extrusion machine head coats an inner sheath material and an outer sheath material on the cable core, wherein the inner sheath material is coated on the cable core all the time, when the outer sheath material is coated, a non-foaming material is coated, a foaming material is coated, and then the non-foaming material is coated to form a non-foaming material section, a foaming material section and a non-foaming material section, wherein the foaming material is the same as the base material of the non-foaming material, no foaming agent is contained in the non-foaming material, and a foaming agent is contained in the foaming material; after the feeding is finished, the cable is pulled into a sectional heating device (2) for heating and foaming; in the heating section, the cable is static, the segmented heating device (2) heats and foams the outer sheath, in the heating process, the foaming material section realizes foaming, but the non-foaming material section can not foam, after heating is finished, the moving section of the next period is carried out, and meanwhile, the foamed material is cooled and shaped to form a coupling structure;
the double-layer co-extrusion machine head comprises a machine head seat (101), an inner mold core (102) and a mold sleeve (103); the machine head seat (101) is provided with three feed inlets which are respectively an inner sheath material feed inlet (104), a foaming material feed inlet (105) and a non-foaming material feed inlet (106), an inner sheath material feed channel (107), a foaming material feed channel (108) and a non-foaming material feed channel (109) are respectively and correspondingly arranged in the machine head seat (101), the side wall of the foaming material feed channel (108) is provided with an opening I, the side wall of the non-foaming material feed channel (109) is provided with an opening II, two openings are provided with movable plugs (110), one end of each movable plug (110) can block the opening I, the other end of each movable plug (110) can block the opening II, and each movable plug (110) is connected with a transmission mechanism to reciprocate left and right; the inner mold core (102) is provided with a conical head, the inner mold core (102) is fixedly connected with the machine head seat (101), the inner mold core is fixed in the machine head seat, a mold sleeve (103) is fixed in the discharge port end of the machine head seat (101), the mold sleeve (103) and the inner mold core (102) are positioned on the same central line, and a double-layer co-extrusion machine head outlet forming mold is formed.
2. The preparation method of the coupling-type new energy electric vehicle charging pile cable according to claim 1, characterized in that the transmission mechanism comprises a rack I (111), a rack II (112), a gear I (113) and a gear II (114), a connecting piece (115) is fixed to a non-tooth surface of the rack I (111), two ends of the connecting piece (115) are arranged in a limiting groove in the vertical direction of the inner wall of the headstock, the rack II (112) is fixed to the upper surface of the movable plug (110), the gear I (113) and the gear II (114) rotate coaxially, two ends of a rotating shaft of the gear I (113) and the gear II (114) are fixed in the headstock (101) through bearings, the rack I (111) is meshed with the gear I (113), and the rack II (112) is meshed with the gear II (114); the top end of the connecting piece (115) is connected with a first rocker (116), the first rocker (116) is connected with a first crank (117), a first driven gear (118) and the first crank (117) rotate together, the first driven gear (118) is meshed with a first driving gear (119), the first driving gear (119) is a gap gear, two sections of teeth are arranged on the first driving gear (119), and the arc length of each section of teeth is equal to one half of the circumference of the first driven gear (118); the first driving gear (119) is coaxial with the first belt pulley (120), and the first belt pulley (120) is connected with the driving gear (3) through a belt.
3. The preparation method of the coupled new energy electric vehicle charging pile cable according to claim 2, characterized in that the segmented heating device (2) comprises a heating jacket and a transmission assembly, the heating jacket is composed of a first heating half jacket (201) and a second heating half jacket (202), a first sliding block (203) is arranged at the top end of the first heating half jacket (201), and a second sliding block (204) is arranged at the top end of the second heating half jacket (202);
the transmission assembly comprises a first connecting rod (205), a second connecting rod (206), a third connecting rod (207), a limiting plate (208), a second rocker (209), a second crank (210), a second driven gear (211), a second driving gear (212) and a second belt pulley (218), a limiting groove is formed in the limiting plate (208), the first connecting rod (205) is connected with a first sliding block (203), the second connecting rod (206) is connected with a second sliding block (204), the first connecting rod (205) and the second connecting rod (206) are rotatably connected through a connecting column, the third connecting rod (207) is arranged in the limiting groove of the limiting plate (208), one end of the third connecting rod (207) is connected with the connecting column, and the other end of the third connecting rod (207) is connected with the second rocker (210) through the second rocker (209); the second driven gear (211) and the second crank (210) rotate coaxially, the second driving gear (212) is a clearance gear, two sections of teeth are arranged on the second driving gear (212), the arc length of each section of teeth is equal to one half of the circumference of the second driven gear (211), and the toothed part of the second driving gear (212) is meshed with the second driven gear (211); the second belt pulley (218) is coaxial with the second driving gear (212), the second belt pulley (218) is connected with the driving wheel (3), and the radius of the first belt pulley (120) is the same as that of the second belt pulley (218).
4. The preparation method of the coupled new energy electric vehicle charging pile cable according to claim 3, wherein the heating sleeve is in a cross shape, the I fields at two ends are non-heating sections, and the I field at the middle part is a heating section.
5. The preparation method of the coupled new energy electric vehicle charging pile cable according to claim 3, wherein a third sliding block (213) is arranged on the bottom surface of the first heating half sleeve (201), a fourth sliding block (214) is arranged on the bottom surface of the second heating half sleeve (202), the segmented heating device further comprises a fixing mechanism, the fixing mechanism comprises a first panel (215), a second panel (216) and a supporting rod (217), and the first panel (215) and the second panel (216) are fixedly connected through the supporting rod (217); the sliding groove is formed in the first panel (215), the sliding groove is formed in the second panel (216), the first sliding block (203) and the second sliding block (204) are arranged in the first sliding groove, the third sliding block (213) and the fourth sliding block (214) are arranged in the second sliding groove, and the lower end of the limiting plate (208) is fixed to the upper surface of the first panel (215).
6. The preparation method of the coupling type new energy electric vehicle charging pile cable according to claim 2 or 3, wherein the traction device comprises a third driven gear (401), a third driving gear (402) and a group of traction rollers (405), the third driving gear (402) is a gap gear, the circumference of the third driving gear (402) is divided into two sections, one section is a toothed part and the other section is a non-toothed part, the toothed part of the third driving gear (402) is meshed with the third driven gear (401), the third driving gear (402) and a third belt pulley (403) rotate coaxially, the third belt pulley (403) is connected with the driving gear (3) through a belt, and the third belt pulley (403), the first belt pulley (120) and the second belt pulley (218) have the same radius; the fourth belt pulley (407) and the third driven gear (401) rotate coaxially, the fourth belt pulley (407) is connected with the fifth belt pulley (404) through a belt, the fifth belt pulley (404) and the traction roller (405) rotate coaxially, the traction roller (405) is provided with traction teeth (406), and the traction roller is matched with the traction roller (405) to use another traction roller and can be connected with the driving wheel (3) through a group of transmission mechanisms which are the same as the transmission mechanisms.
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| CN202011533057.XA CN112712923B (en) | 2019-11-29 | 2019-11-29 | Preparation method of coupling type new energy electric automobile charging pile cable |
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| CN202011533057.XA CN112712923B (en) | 2019-11-29 | 2019-11-29 | Preparation method of coupling type new energy electric automobile charging pile cable |
| CN201911205223.0A CN110853821B (en) | 2019-11-29 | 2019-11-29 | Coupling type new forms of energy electric automobile fills electric pile cable and double-deck crowded segmentation foaming equipment altogether |
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| CN201911205223.0A Division CN110853821B (en) | 2019-11-29 | 2019-11-29 | Coupling type new forms of energy electric automobile fills electric pile cable and double-deck crowded segmentation foaming equipment altogether |
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| CN201911205223.0A Active CN110853821B (en) | 2019-11-29 | 2019-11-29 | Coupling type new forms of energy electric automobile fills electric pile cable and double-deck crowded segmentation foaming equipment altogether |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110853821A (en) | 2020-02-28 |
| CN110853821B (en) | 2021-01-15 |
| CN112712923A (en) | 2021-04-27 |
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