High-speed wire tube extrusion apparatus

Abstract

To provide a high-speed wire tube extrusion apparatus.SOLUTION: A high-speed wire tube extrusion apparatus of the present invention relating to a technical field of conduit pipe extrusion includes an apparatus body, a cabinet, a drive motor, a rotation bush, a female screw barrel, an insertion lot, an extrusion cap, an inner die for extrusion and an outer die for extrusion. Two sets of screw conveyors are installed inside the apparatus body. A semicircular structure of the apparatus body and a semicircular structure of a lid each form a circular dispensing passage. The extrusion cap is connected to an outside of the circular dispensing passage by a bolt, and the semicircular structure of the apparatus body and the semicircular structure of the lid each form the circular dispensing passage, and the extrusion cap is connected to the outside of the circular dispensing passage by a bolt. Not only can dimensions of an MPP conduit be changed during extrusion, but the conduit can also be pre-cooled, solving the problems of low extrusion efficiency, inability to change the dimensions of the extruded conduit according to needs, and rapid cooling.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the technical field of conduit extrusion, and in particular to high speed conduit extrusion equipment. [Background technology]

[0002] A conduit is a protective tube that covers the outer layer of a cable to prevent the cable from being damaged. Normally, an extruder is required to manufacture a conduit. However, when extruding a conduit, it is generally extruded through a single extrusion path, which is inefficient. In addition, the dimensions of the extruded conduit cannot be changed according to needs, which is inconvenient to use. In addition, the extruded conduit must be cooled in water, which makes it easy for cracks or voids to occur when the conduit cools down rapidly. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention has been made in view of the above circumstances, and provides a high-speed conduit extrusion equipment which can improve the efficiency of MPP conduit, and can easily change the size of MPP conduit during extrusion, and can also pre-cool the conduit through a cooling inner cavity and a cooling rear cavity. [Means for solving the problem]

[0004] The present invention provides a high-speed conduit extrusion equipment, which specifically includes an equipment body, a cabinet, a driving motor, a rotating bush, a female thread cylinder, an insertion rod, an extrusion cap, an extrusion inner die, and an extrusion outer die; The main body of the equipment is installed on a cabinet, two sets of screw conveyors are installed in the main body of the equipment, and a cover is connected to the main body of the equipment through a bolt. The rotating shafts of the two sets of screw conveyors have a tubular structure, and an interlocking gear is connected to one end of the rotating shaft of the screw conveyor that penetrates the main body of the equipment and the cover. The driving motor is installed in the center of one end of the cabinet, and a driving gear is installed on the motor shaft of the driving motor, and the driving gear is respectively meshed with the two sets of interlocking gears. The other end of the main body of the equipment and the cover are spaced apart to form a semicircular structure, and the semicircular structure of the main body of the equipment and the semicircular structure of the cover respectively form a circular dispensing passage. The extrusion cap is connected to the outside of the circular dispensing passage by a bolt, and an insertion port is provided at the outer end of the semicircular structure of the cover. There are two sets of rotating bushes, and threaded rods are respectively connected on the two sets of rotating bushes. The female thread cylinder is a threaded rod. The two sets of rotating bushings are respectively fitted onto the other end of the rotating shaft of the screw conveyor, the female thread cylinders are respectively inserted into the insertion holes on the cover body, the inner end of the insertion rod is inserted into the other end of the tubular structure of the rotating shaft of the screw conveyor, the inner extrusion die is attached to the outer end of the insertion rod, two sets of ejection cylinders are provided on the extrusion cap, the outer extrusion die is screwed onto the male thread of the ejection cylinder, and the inner extrusion die is disposed inside the outer extrusion die, a through hole that is L-shaped when viewed from the side is further provided on the insertion rod, a plastic insertion cylinder is inserted thereon, two sets of through holes are provided inside the plastic insertion cylinder, and a first inlet pipe and a first outlet pipe are respectively connected to the top ends of the two sets of through holes, and the first inlet pipe and the first outlet pipe are curved upward through the notch at the top end of the extrusion cap, and a quick connector is connected.

[0005] Alternatively, the inner ends of the intervals between the semicircular structures on the equipment body and the cover are inclined structures, and the other ends of the two sets of screw conveyors are respectively disposed within the semicircular structures of the equipment body.

[0006] Alternatively, two sets of limiting plates and one set of operating handles are connected to the female thread cylinder, and the limiting plates are provided on both the upper and lower sides of the insertion opening, respectively.

[0007] Alternatively, a connecting plate is further provided on the insertion rod, and a hexagon socket bolt insertion hole is provided on the connecting plate, and the connecting plate is connected to the rotating bushing via the hexagon socket bolt.

[0008] Alternatively, the inner diameter of the dispensing barrel is the same as the inner diameter of the circular dispensing passage.

[0009] Alternatively, a female threaded hole is provided in the internal center of the inner extrusion die, and is connected to the screw structure at the outer end of the insert rod through the female threaded hole, the outer end of the plastic insert tube is inserted into the cooling internal cavity of the inner extrusion die and sealed with rubber ring, and the outer ends of the two sets of through holes inside the plastic insert tube are connected to the cooling internal cavity, one end of the inner extrusion die has a tapered structure and the other end has a circular structure, and the cooling internal cavity is provided inside the circular structure.

[0010] Alternatively, one end of the outer extrusion die is a large ring structure, the middle is a tapered cylindrical structure, and the other end is a small ring structure, with an internal thread on the inside of the large ring structure, and the outer end of the circular structure of the inner extrusion die is flush with the outer end of the small ring structure of the outer extrusion die.

[0011] A cooling rear cavity is provided inside a small annulus of the extrusion outer die, a second inlet pipe is connected to the bottom side of the cooling rear cavity, and a second outlet pipe is connected to the top side of the cooling rear cavity, and both the second inlet pipe and the second outlet pipe are curved and connected with a quick joint. Effect of the Invention

[0012] The present invention can improve the efficiency of MPP conduit, and can easily change the size of MPP conduit when extruding, and can also pre-cool the conduit through the cooling inner cavity and cooling rear cavity.

[0013] In addition, by providing two sets of circular discharge passages and two sets of discharge cylinders on the extrusion cap, one drive motor can be used to rotate and drive two sets of screw conveyors, allowing the material to be extruded simultaneously from two sets of circular discharge passages, thereby improving the efficiency of the MPP conduit.

[0014] In addition, by inserting the insertion rod, the extrusion inner die is screwed onto the outer end of the insertion rod, and the extrusion outer die is screwed onto the discharge cylinder, and when the MPP electric conduit is extruded from the two sets of discharge passages, the outer diameter and wall thickness of the MPP electric conduit can be changed by replacing the extrusion inner die as necessary, and further, the outer diameter and wall thickness of the MPP electric conduit can be changed by replacing the extrusion outer die as necessary, so that the dimensions are easily changed when the MPP electric conduit is extruded.

[0015] In addition, by providing the cooling inner cavity and the cooling rear cavity, the conduit can be pre-cooled when extruding, and the extruded conduit can be directly placed in water to cool, thereby preventing the occurrence of cracks or voids.

[0016] In order to more clearly describe the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0017] The drawings in the following description relate only to some embodiments of the present invention and are not intended to limit the present invention. [Brief description of the drawings]

[0018] [Figure 1] 1 is a schematic overall configuration diagram of the present invention; [Diagram 2] FIG. 2 is a top view of the present invention seen from above the left side of FIG. [Diagram 3] FIG. 2 is a schematic diagram of the extrusion inner die and the extrusion outer die of FIG. 1 according to the present invention when removed. [Figure 4] FIG. 4 is a schematic diagram of the present invention as viewed from the left side of FIG. 3. [Diagram 5]2 is a schematic diagram of the inner extrusion die of the present invention shown in FIG. 1 when connected to an insertion rod in a vertical cross-sectional view. [Figure 6] FIG. 4 is a schematic diagram of the present invention when the extrusion cap of FIG. 3 is removed. [Figure 7] FIG. 7 is a schematic diagram of the present invention when the insert rod of FIG. 6 is removed. [Figure 8] FIG. 8 is a schematic diagram of the present invention when the rotating bush and the female threaded cylinder of FIG. 7 are removed. [Figure 9] FIG. 9 is a schematic diagram of the female-threaded cylinder of FIG. 8 according to the present invention when removed from a threaded rod. [Figure 10] FIG. 9 is a schematic diagram of the present invention when the cover of FIG. 8 is removed from the equipment body. [Figure 11] 11 is a bottom view of the lid of FIG. 10 of the present invention, viewed from below the side surface. FIG. [Figure 12] 4 is a schematic vertical cross-sectional view of one end of the outer extrusion die of FIG. 3 according to the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] In order to make the purpose, scheme and advantages of the technical means of the present invention clearer, the technical means of the embodiments of the present invention will be described below clearly and completely with reference to the drawings of specific embodiments of the present invention. Unless otherwise specified, the terms used in this specification have ordinary meanings in the art. The same reference numerals in the drawings represent the same components.

[0020] For the embodiment, please refer to Figs. 1 to 12.

[0021] The present invention provides a high-speed extrusion equipment for electric conduit, which includes an equipment body 1, a cabinet 2, a driving motor 3, a rotating bush 4, a female thread cylinder 5, an insertion rod 6, an extrusion cap 7, an inner die 8 for extrusion, and an outer die 9 for extrusion. The main body 1 of the equipment is installed on the cabinet 2, two sets of screw conveyors 101 are attached in the main body 1 of the equipment, a cover 102 is connected to the main body 1 of the equipment via bolts, the rotating shafts of the two sets of screw conveyors 101 have a tubular structure, an interlocking gear 1011 is connected to one end of the rotating shaft of the screw conveyor 101 that passes through the main body 1 of the equipment and the cover 102, a driving motor 3 is attached to the center of one end of the cabinet 2, a driving gear 301 is attached to the motor shaft of the driving motor 3, and the driving gear 301 is respectively engaged with the two sets of interlocking gears 1011, and the main body 1 of the equipment and the other end of the lid 102 are spaced apart to form a semicircular structure, and the semicircular structure of the equipment main body 1 and the semicircular structure of the lid 102 each form a circular dispensing passage, the extrusion cap 7 is connected to the outside of the circular dispensing passage with a bolt, and an insertion port 1021 is provided at the outer end of the semicircular structure of the lid 102, there are two sets of rotating bushes 4, a threaded rod 401 is connected onto each of the two sets of rotating bushes 4, and the female thread cylinder 5 is screwed onto the threaded rod 401, and the two sets of rotating bushes 4 are respectively fitted onto the other end of the rotating shaft of the screw conveyor 101, and the female thread cylinder 5 is connected to the lid 1 1, the inner end of the insert rod 6 is inserted into the insertion port 1021 on the screw conveyor 101, the inner end of the insert rod 6 is inserted into the other end of the tubular structure of the rotating shaft of the screw conveyor 101, the inner extrusion die 8 is attached to the outer end of the insert rod 6, two sets of ejection cylinders 701 are provided on the extrusion cap 7, the outer extrusion die 9 is screwed onto the male thread of the ejection cylinder 701, and the inner extrusion die 8 is disposed inside the outer extrusion die 9, and a through hole having an L-shape in a side view is further provided on the insert rod 6, and a plastic insert cylinder 602 is inserted into the through hole, and a through hole is inserted into the inside of the plastic insert cylinder 602. Two sets of through holes are provided, and a first inlet pipe 603 and a first outlet pipe 604 are respectively connected to the top ends of the two sets of through holes. The first inlet pipe 603 and the first outlet pipe 604 are curved upward through a notch at the top end of the extrusion cap 7, and quick disconnect couplings are connected to them. A cooling water pipe is connected to the quick disconnect coupling at the outer end of the first inlet pipe 603, and a water pipe is connected to the quick disconnect coupling at the outer end of the first outlet pipe 604. The cooling water enters the cooling inner cavity 801 through the first inlet pipe 603 and the through holes in the plastic insertion tube 602, and pre-cools the inside of the molded electric conduit.The cooling water in the cooling internal cavity 801 can also flow back to the first outflow pipe 604 through another set of through holes and outflow from the water pipe.

[0022] As shown in Figures 10 and 11, the inner ends of the gaps between the semicircular structures on the equipment body 1 and the cover body 102 are each inclined structures, and the other ends of the two sets of screw conveyors 101 are each disposed within the semicircular structures of the equipment body 1. When the material is extruded, it can smoothly enter the circular dispensing passage under the action of the inclined structures at the inner ends of the gaps between the semicircular structures.

[0023] As shown in Figures 6 to 9, two sets of limiting plates 501 and one set of operating handles 502 are connected to the female threaded cylinder 5, and the limiting plates 501 are provided on both the upper and lower sides of the insertion opening 1021, respectively. When the female threaded cylinder 5 is inserted into the insertion opening 1021 on the cover body 102, it becomes easy to engage the female threaded cylinder 5 and the cover body 102 through the two sets of limiting plates 501, and it is also convenient to rotate the female threaded cylinder 5 through the operating handle 502.

[0024] As shown in FIG. 7, a connecting plate 601 is further provided on the inserted rod 6, and a hexagon socket bolt insertion hole is provided on the connecting plate 601, which is connected to the rotating bush 4 via a hexagon socket bolt. This connects the inserted rod 6 to the rotating bush 4, thereby preventing the inserted rod 6 from moving when the screw conveyor 101 rotates.

[0025] As shown in Figures 3 and 6, the inner diameter of the dispensing cylinder 701 is the same as the inner diameter of the circular dispensing passage, so that when the material is extruded, it can enter the dispensing cylinder 701 through the circular dispensing passage.

[0026] As shown in Figures 3 to 5, a female screw hole is provided in the center of the inside of the extrusion inner die 8, and is connected to the screw structure at the outer end of the insertion rod 6 through the female screw hole. The outer end of the plastic insertion tube 602 is inserted into the cooling inner cavity 801 of the extrusion inner die 8 and sealed with rubber ring. The outer ends of the two sets of through holes in the plastic insertion tube 602 are connected to the cooling inner cavity 801. One end of the extrusion inner die 8 has a tapered structure, and the other end has a circular structure. The cooling inner cavity 801 is provided inside the circular structure. When necessary, the extrusion inner die 8 can be easily removed from the screw structure at the outer end of the insertion rod 6 and replaced. Furthermore, the tapered structure of the inner end of the extrusion inner die 8 can be utilized to extrude the material along the tapered structure during the extrusion of the MPP electric conduit.

[0027] As shown in Figures 3 and 4, one end of the extrusion outer die 9 is a large circular ring structure, the center is a tapered cylindrical structure, and the other end is a small circular ring structure. An internal thread is provided on the inside of the large circular ring structure. The outer end of the circular structure of the extrusion inner die 8 is flush with the outer end of the small circular ring structure of the extrusion outer die 9. A rear cooling cavity 901 is provided inside the small ring of the extrusion outer die 9. A second inlet pipe 902 is connected to the bottom side of the rear cooling cavity 901, and a second outlet pipe 903 is connected to the top side. Both the second inlet pipe 902 and the second outlet pipe 903 are curved. 9, the outer die 9 for extrusion is connected to a quick disconnect connector, so that the outer die 9 for extrusion can be easily removed from the discharge cylinder 701 and replaced as required. By utilizing the tapered cylinder structure of the outer die 9 for extrusion, all the materials are extruded from the small annular end of the outer die 9 for extrusion, and the outer end of the second inlet pipe 902 is connected to a cooling water pipe through a quick disconnect connector, and the outer end of the second outlet pipe 903 is connected to a water pipe through a quick disconnect connector, so that the cooling water enters the rear-cooling cavity 901 to pre-cool the outside of the formed electric conduit, and the cooling water in the rear-cooling cavity 901 can also flow out from the second outlet pipe 903.

[0028] Specific usage and operation of this embodiment: In the present invention, the female threaded cylinder 5 is screwed onto the threaded rod 401, the rotating bushing 4 is fitted onto the other end of the rotating shaft of the screw conveyor 101, the female threaded cylinder 5 is inserted into the insertion opening 1021 on the cover 102, the limiting plates 501 are disposed on both the upper and lower sides of the insertion opening 1021, the inner end of the insertion rod 6 is inserted into the other end of the tubular structure of the rotating shaft of the screw conveyor 101, the connecting plate 601 is connected to the rotating bushing 4 with a hexagon socket bolt, and the extrusion cap 7 is Connect to the outside of the circular discharge passage with bolts, select appropriate inner extrusion die 8 and outer extrusion die 9 as necessary, connect inner extrusion die 8 to the threaded structure at the outer end of insert rod 6 through the female thread hole, screw the inner female thread of the large annular structure of outer extrusion die 9 into the male thread of discharge cylinder 701, connect the quick joints at the outer ends of first inlet pipe 603 and second inlet pipe 902 to cooling water pipes, respectively, connect the quick joints at the outer ends of first outlet pipe 604 and second outlet pipe 903 to water pipes, respectively; The material is fed into the supply hopper on the cover 102, and the gear 301 is rotated by the driving motor 3. The driving gear 301 and the two sets of interlocking gears 1011 are engaged to rotate the two sets of screw conveyors 101, and the material is simultaneously extruded through the two sets of circular discharge passages. Under the action of the extrusion outer die 9 and the extrusion inner die 8, an MPP conduit that meets the requirements is extruded, improving the efficiency of the extruder. The extruded conduit is pre-cooled through the cooling inner cavity 801 and the cooling rear cavity 901 during the extrusion process. The outer diameter and wall thickness of the MPP conduit can be changed by replacing the extrusion inner die as necessary. Furthermore, the outer diameter and wall thickness of the MPP conduit can be changed by replacing the extrusion outer die as necessary, so that the dimensions can be easily changed when extruding the MPP conduit.

[0029] The above description is only exemplary embodiments of the present invention, and is not intended to be used to limit the protection scope of the present invention, which is defined by the appended claims. [Explanation of symbols]

[0030] 1 Equipment body 101 Screw Conveyor 1011 Interlocking gear 102 Lid 1021 Insertion port 2 Cabinet 3 Drive motor 301 Drive gear 4 Rotating bushing 401 Threaded Rod 5 Female thread cylinder 501 Restriction Plate 502 Operating handle 6 Insertion Lot 601 Connecting plate 602 Plastic Insertion Tube 603 1st inflow pipe 604 1st outflow pipe 7 Extrusion Cap 701 Dispensing cylinder 8. Inner extrusion die 801 Cooling Inner Cavity 9. Extrusion outer die 901 Cooling Rear Cavity 902 2nd inflow pipe 903 2nd outflow pipe

Claims

1. The high-speed electric conduit extrusion equipment includes an equipment body (1), a cabinet (2), a drive motor (3), a rotating bush (4), a female threaded cylinder (5), an insertion rod (6), an extrusion cap (7), an inner extrusion die (8), and an outer extrusion die (9); The main body (1) of the equipment is installed on the cabinet (2), two sets of screw conveyors (101) are attached inside the main body (1), a cover body (102) is connected to the main body (1) of the equipment via bolts, the rotation shafts of the two sets of screw conveyors (101) have a tubular structure, an interlocking gear (1011) is connected to one end of the rotation shaft of the screw conveyor (101) that passes through the main body (1) of the equipment and the cover body (102), the drive motor (3) is attached to the center of one end of the cabinet (2), and the motor shaft of the drive motor (3) A driving gear (301) is attached to the rotating bush (4), and the driving gear (301) is meshed with two sets of the interlocking gears (1011), and the other end of the equipment body (1) and the cover body (102) are spaced apart to form a semicircular structure, and the semicircular structure of the equipment body (1) and the semicircular structure of the cover body (102) each form a circular dispensing passage, the extrusion cap (7) is connected to the outside of the circular dispensing passage by a bolt, and an insertion hole (1021) is provided at the outer end of the semicircular structure of the cover body (102), and there are two sets of the rotating bush (4), and the two sets of the rotating bush The threaded rods (401) are respectively connected to the upper ends of the bushes (4) of the screw conveyor (101), the female threaded cylinders (5) are screwed onto the threaded rods (401), two sets of the rotating bushes (4) are respectively fitted to the other ends of the rotating shaft of the screw conveyor (101), the female threaded cylinders (5) are respectively inserted into the insertion holes (1021) on the cover body (102), the inner end of the insertion rod (6) is inserted into the other end of the tubular structure of the rotating shaft of the screw conveyor (101), the extrusion inner die (8) is attached to the outer end of the insertion rod (6), and the extrusion cap (102) is connected to the upper end of the extrusion cap (102). Two sets of discharge cylinders (701) are provided on the roll (7), the outer extrusion die (9) is screwed onto the male threads of the discharge cylinders (701), and the inner extrusion die (8) is disposed inside the outer extrusion die (9). A through hole having an L-shape in a side view is further provided on the insertion rod (6), a plastic insertion tube (602) is inserted therein, and two sets of through holes are provided penetrating the interior of the plastic insertion tube (602), and a first inlet pipe (603) and a first outlet pipe (604) are respectively connected to the top ends of the two sets of through holes.The first inlet pipe (603) and the first outlet pipe (604) are bent upward through a notch at the top end of the extrusion cap (7) and a quick coupling is connected. The high speed extrusion equipment for electric conduit is characterized by the above.

2. 2. The high-speed conduit extrusion equipment according to claim 1, characterized in that the inner ends of the intervals between the semicircular structures on the equipment body (1) and the cover body (102) are inclined structures, and the other ends of the two sets of screw conveyors (101) are respectively arranged within the semicircular structures of the equipment body (1).

3. The high-speed conduit extrusion equipment according to claim 1, characterized in that two sets of limiting plates (501) and one set of operating handles (502) are connected on the female thread cylinder (5), and the limiting plates (501) are respectively provided on both the upper and lower sides of the insertion port (1021).

4. 2. The high-speed extrusion equipment of claim 1, further comprising a connecting plate (601) on the insertion rod (6), the connecting plate (601) having a hexagon socket bolt insertion hole and connected to the rotating bush (4) via a hexagon socket bolt.

5. The high-speed extrusion equipment of claim 1, wherein the inner diameter of the discharge cylinder (701) is the same as the inner diameter of the circular discharge passage.

6. 5. The high-speed extrusion equipment of claim 4, characterized in that: the inner extrusion die (8) has a female threaded hole in the inner center thereof, which is connected to the threaded structure of the outer end of the insertion rod (6) through the female threaded hole; the outer end of the plastic insertion tube (602) is inserted into the cooling inner cavity (801) of the inner extrusion die (8) and sealed with rubber ring; and the outer ends of the two sets of through holes in the plastic insertion tube (602) are connected to the cooling inner cavity (801); one end of the inner extrusion die (8) has a tapered structure and the other end has a circular structure, and the cooling inner cavity (801) is located inside the circular structure.

7. 7. The high-speed conduit extrusion equipment according to claim 6, characterized in that one end of the extrusion outer die (9) is a large annular structure, the center is a tapered cylindrical structure, and the other end is a small annular structure, and an internal thread is provided on the inside of the large annular structure, and the outer end of the circular structure of the extrusion inner die (8) is flush with the outer end of the small annular structure of the extrusion outer die (9).

8. 8. The high-speed extrusion equipment for electrical conduit according to claim 7, characterized in that: a cooling rear cavity (901) is provided inside a small annulus of the extrusion outer die (9); a second inlet pipe (902) is connected to the bottom side of the cooling rear cavity (901) and a second outlet pipe (903) is connected to the top side thereof; the second inlet pipe (902) and the second outlet pipe (903) are both curved, and the quick joint is connected thereto.

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