Tubular busbar double-layer co-extrusion forming device

Abstract

The utility model discloses a tubular busbar double-layer co-extrusion forming device, which relates to the technical field of electric power engineering and comprises a U-shaped frame, a forming component is arranged in the U-shaped frame, and a feeding component is further arranged on the U-shaped frame. A lower mold and an upper mold in the forming assembly are clamped to the lower portion and the upper portion of the inner side of the U-shaped frame correspondingly, a first forming cavity and a second forming cavity are formed in the two sides of the center position of the top of the lower mold and the two sides of the center position of the bottom of the upper mold correspondingly, and injection molding pipes penetrate through the two sides of the top of the upper mold correspondingly. Double-layer extrusion forming is carried out on the tubular bus through the first forming cavity and the second forming cavity of the lower die and the upper die in the forming assembly, meanwhile, the occupied area of the device is reduced, the problem that an existing device is large in occupied area is solved, lantern rings are cooled through fins and heat exchange pipes in the feeding assembly, and the service life of the lantern rings is prolonged. And the tubular bus is cooled through the lantern ring, so that the forming speed is increased, and the problem of poor cooling effect in the prior art is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power engineering, and particularly relates to a double-layer co-extrusion molding device for a tubular busbar. Background Art

[0002] The tubular busbar is a busbar product that uses copper tubes or aluminum alloy tubes as conductors and is insulated. It is generally called "tubular cable". It has the characteristics of large current, high mechanical strength, good insulation, and a wide range of applications. It is one of the more common power engineering equipment. In the production and preparation process of the tubular busbar, in order to shorten the production cycle, a double-layer co-extrusion molding device is often required. The use of the double-layer co-extrusion molding device realizes the extrusion molding of multiple layers of the tubular busbar at one time, thereby shortening the production cycle of the tubular busbar.

[0003] The existing document with publication number CN211390043U discloses an automatic intelligent co-extrusion molding device for a cable, comprising a co-extrusion die, a first extruder and a second extruder, wherein the co-extrusion die comprises a first extrusion die and a second extrusion die, and a protective cover is arranged between the discharge end of the first extrusion die and the feed end of the second extrusion die;

[0004] However, it still has the following disadvantages in actual use:

[0005] 1. The co-extrusion molding device mentioned above, wherein the co-extrusion mold includes a first extrusion mold and a second extrusion mold, a protective cover is arranged between the discharge end of the first extrusion mold and the feed end of the second extrusion mold, and the double layers of the tubular busbar are extruded and molded respectively by the first extrusion mold and the second extrusion mold. The arrangement of the first extrusion mold and the second extrusion mold not only increases the overall floor space of the device, but also increases the cleaning work of the mold;

[0006] 2. In the above-mentioned co-extrusion molding device, a protective cover is arranged between the discharge end of the first extrusion mold and the feed end of the second extrusion mold, and convection cooling fans are arranged on the top and bottom of the protective cover. The convection cooling fan is used to speed up the cooling molding speed in the first extrusion mold, but it is not convenient to speed up the cooling molding speed in the second extrusion mold, resulting in a slower overall cooling molding speed. Utility Model Content

[0007] The utility model aims to provide a double-layer co-extrusion molding device for a tubular busbar, which performs double-layer extrusion molding of the tubular busbar through the first molding cavity and the second molding cavity of the lower mold and the upper mold in the molding assembly, while reducing the footprint of the device, solving the problem of the large footprint of the existing device, cooling the sleeve ring through the fins and heat exchange tubes in the feed assembly, and cooling the tubular busbar through the sleeve ring, thereby accelerating the molding speed and solving the problem of poor cooling effect in the existing device.

[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0009] The utility model is a tubular busbar double-layer co-extrusion molding device, comprising U-shaped frames respectively located on two sides, a molding component is arranged in the U-shaped frame, and a feeding component is also arranged on the U-shaped frame located on one side;

[0010] The lower mold and the upper mold in the molding assembly are respectively clamped at the lower and upper inner sides of the U-shaped frame, the top of the lower mold and the bottom center of the upper mold are respectively provided with a first molding cavity and a second molding cavity, both sides of the top of the upper mold are penetrated by injection tubes, the bottom of the lower mold and the top center of the upper mold are provided with through grooves, and the interior of the through grooves is movably connected with partitions;

[0011] The mounting frame in the feed assembly is fixedly connected to the outer wall of one side of the U-shaped frame, a lower mounting plate is movably connected to the top of the mounting frame in the transverse direction, an upper mounting plate is fixedly connected to the top of the lower mounting plate, a clamping plate is fixedly connected to one side of the lower mounting plate and the upper mounting plate, a sleeve is welded between the lower mounting plate and the upper mounting plate and the clamping plate, a plurality of groups of fins are welded at equal intervals in the transverse direction at the bottom or top of the sleeve, and heat exchange tubes are passed through the fins.

[0012] Furthermore, grooves are vertically opened at the front and rear ends of the U-shaped frame, and bumps are gap-fitted at the bottom and top of the grooves. One side of the bump passes through the groove and is welded to both sides of the front and rear end surfaces of the lower mold and the upper mold respectively.

[0013] Furthermore, first connecting rods are welded around the top of the lower mold, and the top ends of the first connecting rods pass through the surface of the upper mold and are threadedly sleeved with first nuts.

[0014] Furthermore, a mounting rod is fixedly connected to the lower side of the outer wall of the lower mold, a shield is rotatably sleeved on the outer wall of the mounting rod, and the upper end of the shield is abutted and connected to the outer wall of the upper mold.

[0015] Furthermore, mounting grooves are provided above the facing surfaces of the upper mold and the shielding plate, and permanent magnets are fixedly connected inside the mounting grooves.

[0016] Furthermore, a U-shaped frame is fixedly connected to the top of the through groove, the upper end of the partition is movably connected to the inner side of the U-shaped frame, a sleeve rod passes through the top of the U-shaped frame, the internal thread of the sleeve rod is connected to a threaded rod, the bottom end of the threaded rod is rotatably connected to the upper center position of the partition, and the top end of the threaded rod is fixedly connected to a knob.

[0017] Furthermore, the front and rear ends of the U-shaped frame are both vertically fixedly connected with sliding rods, and the front and rear ends of the upper end of the partition are both slidably sleeved on the outer wall of the sliding rod.

[0018] Furthermore, a screw rod is connected to the inside of the installation frame for horizontal rotation, and a driving motor is fixedly connected to the outer wall of one side of the installation frame away from the U-shaped frame through a motor frame. The output shaft of the driving motor passes through the outer wall of one side of the U-shaped frame and is fixedly connected to one end of the screw rod. A slider is threadedly sleeved on the outer wall of the screw rod, and the lower mounting plate is fixedly connected to the top of the slider.

[0019] Furthermore, the front and rear ends of the upper surface of the lower mounting plate are welded with second connecting rods, and the top ends of the second connecting rods respectively penetrate the front and rear ends of the surface of the upper mounting plate and are threadedly sleeved with second nuts.

[0020] The utility model has the following beneficial effects:

[0021] 1. The utility model sets a molding assembly, extrude the inner layer of the tubular busbar through the first molding cavity in the lower mold and the upper mold, and extrude the outer layer of the tubular busbar through the second molding cavity in the lower mold and the upper mold, thereby realizing double-layer co-extrusion molding of the tubular busbar, which not only reduces the overall footprint of the device, but also reduces the cleaning work of the mold by the staff.

[0022] 2. The utility model provides a feed assembly to clamp one end of the inner core of the tubular busbar between the clamping plates, and to locate one end of the tubular busbar between the sleeve rings. The heat exchange tube is externally connected to a refrigeration water tank, and cold water is provided to the heat exchange tube through the refrigeration water tank, thereby realizing cooling of the fins. At this time, since the temperature of the fins is lower than that of the sleeve ring, the heat on the sleeve ring and the inner core of the tubular busbar is transferred to the fins and dissipated, so that the inner core temperature of the tubular busbar is lower than that of the outer layer or the inner layer, so that the heat on the inner layer or the outer layer is quickly transferred to the inner core of the tubular busbar, thereby accelerating the cooling and forming speed of the inner and outer layers of the tubular busbar. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the U-shaped frame of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the molding component of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the lower mold of the utility model;

[0028] Figure 5 It is a structural schematic diagram of the upper mold of the utility model;

[0029] Figure 6 It is a structural schematic diagram of the partition of the utility model;

[0030] Figure 7 It is a structural schematic diagram of the feeding assembly of the utility model;

[0031] Figure 8 It is a schematic diagram of the installation between the lower mounting plate and the upper mounting plate of the utility model;

[0032] Fig. 9 It is a structural schematic diagram of the sleeve ring of the utility model.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. U-shaped frame; 11. groove; 2. molding assembly; 21. lower mold; 211. convex block; 212. first connecting rod; 213. first nut; 214. first molding cavity; 215. second molding cavity; 216. mounting rod; 22. upper mold; 221. injection molding tube; 222. through groove; 223. mounting groove; 224. permanent magnet; 23. partition; 231. U-shaped frame; 232. slide Rod; 233, sleeve rod; 234, threaded rod; 235, knob; 24, baffle; 3, feed assembly; 31, mounting frame; 311, screw rod; 312, motor frame; 313, drive motor; 314, slider; 32, lower mounting plate; 321, second connecting rod; 322, second nut; 323, clamping plate; 33, upper mounting plate; 34, collar; 341, fin; 342, heat exchange tube. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0036] Embodiment 1

[0037] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the utility model is a double-layer co-extrusion molding device for a tubular busbar, comprising a U-shaped frame 1 located at two sides, wherein a molding assembly 2 is arranged in the U-shaped frame 1;

[0038] The lower mold 21 and the upper mold 22 in the molding assembly 2 are respectively clamped at the lower and upper sides of the inner side of the U-shaped frame 1. The front and rear ends of the U-shaped frame 1 are vertically provided with grooves 11. The lower and upper sides of the grooves 11 are gap-fitted with protrusions 211. One side of the protrusion 211 passes through the groove 11 and is welded to both sides of the front and rear end surfaces of the lower mold 21 and the upper mold 22 respectively.

[0039] The top of the lower mold 21 is welded with a first connecting rod 212, the top of the first connecting rod 212 passes through the surface of the upper mold 22 and is threaded with a first nut 213. A mounting rod 216 is fixedly connected to the lower side of the outer wall of one side of the lower mold 21. A shield plate 24 is rotatably sleeved on the outer wall of the mounting rod 216. The upper end of the shield plate 24 is abutted and connected to the outer wall of one side of the upper mold 22. A mounting groove 223 is opened above the facing surfaces of the upper mold 22 and the shield plate 24. A permanent magnet 224 is fixedly connected inside the mounting groove 223.

[0040] A first molding cavity 214 and a second molding cavity 215 are respectively provided at both sides of the center of the top of the lower mold 21 and the bottom of the upper mold 22. Injection tubes 221 penetrate through both sides of the top of the upper mold 22. A through groove 222 is provided at the bottom of the lower mold 21 and the center of the top of the upper mold 22.

[0041] The partition 23 is movably connected inside the through slot 222, and a U-shaped frame 231 is fixedly connected above the through slot 222. The upper end of the partition 23 is movably connected to the inner side of the U-shaped frame 231. The front and rear ends of the U-shaped frame 231 are vertically fixedly connected to the sliding rod 232. The front and rear ends of the upper end of the partition 23 are slidably sleeved on the outer wall of the sliding rod 232. A sleeve rod 233 passes through the top of the U-shaped frame 231. The inner thread of the sleeve rod 233 is connected to a threaded rod 234. The bottom end of the threaded rod 234 is rotatably connected to the center position of the upper end of the partition 23. The top of the threaded rod 234 is fixedly connected to a knob 235.

[0042] Based on the above arrangement, when in use, firstly, the injection tube 221 is connected to the injection molding machine, and the inner core of the tubular busbar is inserted into the first molding cavity 214, and raw materials are provided into the first molding cavity 214 through the injection tube 221 on the first molding cavity 214, thereby realizing the extrusion molding of the inner layer of the tubular busbar;

[0043] Next, after the inner layer of the tubular busbar is cooled and formed, an external force is applied to the knob 235, so that the knob 235 drives the threaded rod 234 to rotate synchronously, and under the action of the threaded connection between the threaded rod 234 and the sleeve rod 233, the partition plate 23 moves to the outside of the through groove 222, and the knob 235 is stopped when the first molding cavity 214 and the second molding cavity 215 are connected to each other;

[0044] Finally, an external force is applied to the tubular busbar, so that the inner core and inner layer of the tubular busbar move to the inside of the second molding cavity 215, and raw materials are provided to the second molding cavity 215 through the injection molding tube 221 on the second molding cavity 215, so that the outer layer of the tubular busbar is cooled and formed. At the same time, the baffle 24 is opened, and the tubular busbar that has been cooled and formed in the second molding cavity 215 is taken out, completing the double-layer co-extrusion molding of the tubular busbar.

[0045] Embodiment 2

[0046] The difference between the second embodiment and the first embodiment is that the second embodiment further discloses: Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9 As shown, a feeding assembly 3 is also provided on the U-shaped frame 1 located on one side, and a mounting frame 31 in the feeding assembly 3 is fixedly connected to an outer wall of one side of the U-shaped frame 1, and a lower mounting plate 32 is movably connected to the upper side of the mounting frame 31 in a transverse direction, and a screw rod 311 is rotatably connected to the inside of the mounting frame 31 in a transverse direction, and a driving motor 313 is fixedly connected to an outer wall of a side of the mounting frame 31 away from the U-shaped frame 1 through a motor frame 312, and an output shaft of the driving motor 313 passes through an outer wall of one side of the U-shaped frame 1 and is fixedly connected to one end of the screw rod 311, and a slider 314 is threadedly sleeved on the outer wall of the screw rod 311, and the lower mounting plate 32 is fixedly connected to the top of the slider 314;

[0047] The upper mounting plate 33 is fixedly connected to the upper portion of the lower mounting plate 32. The front and rear ends of the upper surface of the lower mounting plate 32 are welded with second connecting rods 321. The top ends of the second connecting rods 321 respectively penetrate the front and rear ends of the surface of the upper mounting plate 33 and are threadedly sleeved with second nuts 322. The lower mounting plate 32 and one side of the upper mounting plate 33 are fixedly connected with clamping plates 323.

[0048] A collar 34 is welded between the lower mounting plate 32 and the upper mounting plate 33 and the clamping plate 323. A plurality of groups of fins 341 are welded at equal intervals in the horizontal direction at the bottom or top of the collar 34. The fins 341 are penetrated by heat exchange tubes 342.

[0049] Based on the above arrangement, when in use, firstly, one end of the inner core of the tubular busbar is clamped between the adjacent clamping plates 323, and the inner core of the tubular busbar is connected to the adjacent rings 34, and then the driving motor 313 is started, and the output shaft of the driving motor 313 drives the screw rod 311 to rotate synchronously, so that under the action of the threaded connection between the screw rod 311 and the slider 314, the slider 314 drives the lower mounting plate 32, the upper mounting plate 33 and the clamping plate 323 to move horizontally, thereby making the tubular busbar The inner core moves to the inside of the molding structure for extrusion molding. Finally, the heat exchange tube 342 is connected to a refrigeration water tank, and cold water is provided to the heat exchange tube 342 through the refrigeration water tank. Under the action of the cold water, the fin 341 quickly dissipates heat, thereby causing the temperature of the ring 34 to drop sharply. At this time, due to the large temperature difference between the ring 34 and the tube busbar, the heat on the inner core of the tube busbar is quickly transferred to the ring 34, thereby achieving rapid cooling of the inner core of the tube busbar, thereby accelerating the cooling and molding speed of the raw materials outside the inner core.

[0050] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A double-layer co-extrusion device for a tubular busbar, comprising U-shaped frames (1) located on both sides, characterized in that: A molding assembly (2) is arranged inside the U-shaped frame (1), and a lower mold (21) and an upper mold (22) in the molding assembly (2) are respectively clamped at the lower and upper sides of the inner side of the U-shaped frame (1), a first molding cavity (214) and a second molding cavity (215) are respectively opened at the top of the lower mold (21) and the center of the bottom of the upper mold (22), and an injection tube (221) is passed through both sides of the top of the upper mold (22), a through groove (222) is opened at the bottom of the lower mold (21) and the center of the top of the upper mold (22), and a partition (23) is movably connected inside the through groove (222); A feed assembly (3) is also provided on the U-shaped frame (1) located on one side, and a mounting frame (31) in the feed assembly (3) is fixedly connected to an outer wall of one side of the U-shaped frame (1); a lower mounting plate (32) is movably connected to the top of the mounting frame (31) in a transverse direction, and an upper mounting plate (33) is fixedly connected to the top of the lower mounting plate (32); a clamping plate (323) is fixedly connected to one side of the lower mounting plate (32) and the upper mounting plate (33), and a collar (34) is welded between the lower mounting plate (32) and the upper mounting plate (33) and the clamping plate (323); a plurality of groups of fins (341) are welded to the bottom or top of the collar (34) at equal intervals in a transverse direction, and a heat exchange tube (342) passes through the fin (341).

2. A double-layer co-extrusion device for a tubular busbar according to claim 1, characterized in that: The front and rear ends of the U-shaped frame (1) are vertically provided with grooves (11), and the lower and upper parts of the grooves (11) are gap-fitted with protrusions (211), one side of the protrusions (211) passes through the grooves (11) and is respectively welded to the two sides of the front and rear end surfaces of the lower mold (21) and the upper mold (22).

3. A double-layer co-extrusion device for a tubular busbar according to claim 2, characterized in that: First connecting rods (212) are welded around the top of the lower mold (21), and the top ends of the first connecting rods (212) penetrate around the surface of the upper mold (22) and are threadedly sleeved with first nuts (213).

4. A double-layer co-extrusion device for a tubular busbar according to claim 3, characterized in that: A mounting rod (216) is fixedly connected below the outer wall of one side of the lower mold (21), and a shielding plate (24) is rotatably sleeved on the outer wall of the mounting rod (216), and the upper end of the shielding plate (24) is abutted against and connected to the outer wall of one side of the upper mold (22).

5. A double-layer co-extrusion device for a tubular busbar according to claim 4, characterized in that: Mounting grooves (223) are provided above the facing surfaces of the upper mold (22) and the shielding plate (24), and permanent magnets (224) are fixedly connected inside the mounting grooves (223).

6. A double-layer co-extrusion device for a tubular busbar according to claim 1, characterized in that: A U-shaped frame (231) is fixedly connected above the through groove (222), the upper end of the partition (23) is movably connected to the inner side of the U-shaped frame (231), and a sleeve rod (233) passes through the top of the U-shaped frame (231), a threaded rod (234) is internally threadedly connected to the sleeve rod (233), and the bottom end of the threaded rod (234) is rotatably connected to the center position of the upper end of the partition (23), and a knob (235) is fixedly connected to the top end of the threaded rod (234).

7. A double-layer co-extrusion device for a tubular busbar according to claim 6, characterized in that: The front and rear ends of the U-shaped frame (231) are both vertically fixedly connected to a slide bar (232), and the front and rear ends of the upper end of the partition (23) are both slidably sleeved on the outer wall of the slide bar (232).

8. A double-layer co-extrusion device for a tubular busbar according to claim 1, characterized in that: A screw rod (311) is connected to the interior of the installation frame (31) so as to rotate in a transverse direction, and a driving motor (313) is fixedly connected to an outer wall of the installation frame (31) on one side away from the U-shaped frame (1) through a motor frame (312), an output shaft of the driving motor (313) passes through an outer wall of one side of the U-shaped frame (1) and is fixedly connected to one end of the screw rod (311), and a slider (314) is threadedly sleeved on the outer wall of the screw rod (311), and the lower installation plate (32) is fixedly connected to the top of the slider (314).

9. A double-layer co-extrusion device for a tubular busbar according to claim 1, characterized in that: The front and rear ends of the upper surface of the lower mounting plate (32) are both welded with second connecting rods (321), and the top ends of the second connecting rods (321) respectively penetrate the front and rear ends of the surface of the upper mounting plate (33) and are threadedly sleeved with second nuts (322).

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