Cable processing equipment

Abstract

The present invention relates to the field of cable processing technology, specifically to a cable processing device, which includes a device base, a hot melt mechanism and a molding mechanism; a feed hopper is provided on the upper side of the device base, and a control panel is provided on the front side of the device base; the hot melt mechanism includes a hot melt outer shell and a hot melt inner shell arranged in the hot melt outer shell, the lower end of the feed hopper extends into the hot melt inner shell, the outer wall of the hot melt inner shell is provided with a plurality of main electric heating rings, and an extrusion screw is arranged in the hot melt inner shell; the molding mechanism includes a molding outer shell and a molding assembly, the molding outer shell is located on the right side of the hot melt outer shell, the molding outer shell includes a transverse tube and a longitudinal tube, the transverse tube is assembled and connected to the discharge port of the hot melt inner shell by bolts; the molding assembly is located in the longitudinal tube. The present invention discloses a method for simplifying the steps required for disassembly and assembly of the molding mechanism while ensuring the sealing effect between the hot melt mechanism and the molding mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of cable processing, in particular to a cable processing device. Background Art

[0002] The cable is mainly composed of a cable core, a shielding layer and an insulating layer. The quality of the cable is directly related to the safety and stability of the later use process. Relying on the structure of the cable, its manufacturing process also includes cable core processing, shielding layer coating, insulating layer extrusion molding and other processes. Among them, the insulating layer is an important protective layer in the cable. Its function is to isolate the conductor and the external medium to prevent current leakage. The insulation layer is generally manufactured in two ways: rubber insulation and plastic insulation. No matter which insulation method is used, an extruder is required for processing.

[0003] In the prior art, a molding die is assembled at the end of an extruder to extrude molten plastic onto the cable core or the outside of the cable core after being wrapped with a shielding layer to form an insulating (protective) layer. During use, cables of different specifications require the use of special cable core clamping molds and molding molds. The components need to be replaced during line change production. However, in order to ensure the sealing effect between the mold and the extruder, more steps are required when replacing the mold, and the replacement time remains high. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a cable processing device, which simplifies the steps required for disassembly and assembly of the molding mechanism while ensuring the sealing effect between the hot melt mechanism and the molding mechanism.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: Cable processing equipment, including an equipment base, a hot-melt mechanism and a molding mechanism;

[0006] A feed hopper is provided on the upper side of the equipment base, and a control panel is provided on the front side of the equipment base;

[0007] The hot melt mechanism comprises a hot melt outer shell and a hot melt inner shell arranged in the hot melt outer shell, the lower end of the feed hopper extends into the hot melt inner shell, the outer wall of the hot melt inner shell is provided with a plurality of main electric heating rings, and an extrusion screw is arranged in the hot melt inner shell; a drive motor is arranged on the left side of the hot melt outer shell, the output shaft of the drive motor passes through the hot melt outer shell and is connected to the extrusion screw, and the signal controlled ends of the main electric heating rings and the drive motor are connected to the signal control end of the control panel;

[0008] The molding mechanism includes a molding shell and a molding assembly arranged in the molding shell. The molding shell is located on the right side of the hot-melt shell. The molding shell is a T-tube. The molding shell includes a transverse tube and a longitudinal tube. The transverse tube is connected to the discharge port of the hot-melt inner shell by bolt assembly; the molding assembly is located in the longitudinal tube.

[0009] Furthermore, an auxiliary heating shell is arranged between the hot-melt outer shell and the hot-melt inner shell, and a plurality of auxiliary electric heating rings are arranged on the outer wall of the auxiliary heating shell. There is a gap fit between two adjacent main electric heating rings and between two adjacent auxiliary electric heating rings. The auxiliary electric heating ring covers the gap between two adjacent main electric heating rings from the outside, and the signal controlled end of the auxiliary electric heating ring is connected to the signal control end of the control panel.

[0010] Furthermore, inspection panels are provided on the hot melt shell and the auxiliary heat shell.

[0011] Furthermore, the forming mechanism also includes a positioning plate, a slide groove, a sliding ring and a sealing ring. The positioning plate is arranged on the inner wall of the longitudinal tube, the slide groove is arranged in the middle of the transverse tube, the sliding ring is slidably connected in the slide groove, a tension spring is arranged between the inner end of the sliding ring and the bottom of the slide groove, and a sealing ring is arranged on the outer end of the sliding ring. The inner diameter of the sealing ring is smaller than the inner diameter of the transverse tube of the T-tube, and the outer diameter of the sealing ring is larger than the inner diameter of the transverse tube of the T-tube.

[0012] Furthermore, the forming assembly includes a round tube, a limit ring and an internal threaded ring. The round tube is located inside the longitudinal tube. The outer wall of the round tube is provided with a flat portion that is installed in cooperation with the positioning plate. The feed hole of the round tube is connected with the transverse tube. The round tube is in contact with the sealing ring. A transition tube and a forming tube are respectively provided in the round tube. The transition tube is located on one side of the feed hole of the round tube, and one end of the transition tube extends into the forming tube.

[0013] Furthermore, a positioning screw is inserted into the round tube, and a screw hole compatible with the positioning screw is arranged on the forming tube. The forming tube is sealingly slidably arranged in the round tube and fixed by the positioning screw. An air hole is arranged in the positioning screw, one end of the air hole is connected with the gap between the round tube and the longitudinal tube, and the other end is connected with the gap between the round tube and the forming tube. An air inlet nozzle is arranged on the limiting ring, and the air entering from the air inlet nozzle is sent into one end of the gap between the round tube and the forming tube through the air hole, and discharged from the other end of the gap between the round tube and the forming tube; a retaining edge is arranged on the inner wall of the round tube, one end of the transition tube is threadedly fixed to the retaining edge, and the other end of the transition tube extends into the forming tube.

[0014] Furthermore, the limiting ring is arranged at the outer rear end of the round tube, the limiting ring is installed in cooperation with the longitudinal tube, and the internal thread ring is threadedly connected to the front end of the round tube.

[0015] Furthermore, a plurality of assembly brackets are arranged on the inner wall of the circular tube, and the assembly brackets are evenly arranged along the circumference of the circular tube. The interiors of the assembly brackets are rotatably connected to flip clamping brackets via rotating shafts, and one end of the flip clamping bracket close to the central axis of the circular tube is rotatably connected to a clamping roller via a rotating shaft.

[0016] Furthermore, a torsion spring is provided on the outer movable sleeve of the rotating shaft, one end of the torsion spring is fixedly connected to the assembly bracket, and the other end is fixedly connected to the rotating shaft.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The set temperatures of the multiple main electric heating rings on the outside of the hot melt inner shell vary in a gradient, resulting in the independent existence of different main electric heating rings and the existence of assembly gaps. In order to make up for the temperature loss in the assembly gap, the present invention sets an auxiliary heat shell between the hot melt outer shell and the hot melt inner shell, and sets multiple auxiliary electric heating rings on the outer wall of the auxiliary heat shell. The auxiliary electric heating ring covers the gap between two adjacent main electric heating rings from the outside, thereby ensuring that the plastic particles are still in a heated state during the process of passing through the gap, ensuring the balance of melting. When the equipment needs to be repaired and maintained, it can be disassembled or repaired by setting an inspection panel on the hot melt outer shell and the auxiliary heat shell.

[0019] 2. In the cable processing equipment disclosed in the present invention, during the extrusion molding process, the force exerted by the flowing plastic liquid on the sealing ring can make the sealing ring fit tightly with the outer arc surface of the round tube, thereby ensuring the sealing effect between the round tube and the transverse tube. When the molding component needs to be replaced, it is only necessary to rotate the internal thread ring to remove it, and pull the limit ring to pull the round tube out of the longitudinal tube to complete the maintenance or replacement of the molding component. Compared with the complicated disassembly and assembly process in the prior art, the time required for disassembly and assembly of the molding component is simplified, thereby improving the working efficiency of the cable processing equipment.

[0020] 3. Since the forming tube needs to be coaxial with the space formed by the three clamping rollers, but the round tube in the present invention is partially cylindrical and partially planar, the gap between the forming tube and the round tube is uneven. The gap is also the heat dissipation gap after the molten plastic is extruded on the outside of the cable core. The uneven heat dissipation gap around the cable will lead to inconsistent plastic cooling rate, affecting the quality after molding (melt mark). In the later use process, especially in the long span use of the transmission line, there is a risk of local cracks in the insulation layer.

[0021] In order to solve the problem of uneven heat dissipation gap, the present invention arranges an air cooling mechanism on the side close to the flat part of the circular tube to increase the cooling efficiency of this side for balanced cooling efficiency. Specifically, the air entering from the air inlet nozzle is sent into one end of the gap between the circular tube and the forming tube through the air hole, and is discharged from the other end of the gap between the circular tube and the forming tube.

[0022] 4. The cable processing equipment disclosed in the present invention has three clamping rollers that clamp the cable core from three directions. Specifically, when the cable core passes through the three clamping rollers, the force exerted by the cable core on the clamping rollers will cause the flip clamping frame to overcome the torsion of the torsion spring and rotate. Under the torsion of the torsion spring, the three annularly distributed clamping rollers clamp the cable conductor, so that the axis of the cable core is aligned with the axis of the forming tube, and the stability of the cable core in the forming tube can be guaranteed. Since the flip angle of the flip clamping frame can be adaptively adjusted, the present invention is suitable for clamping and limiting cable cores with similar specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional diagram of a cable processing device in an embodiment;

[0024] Figure 2 It is a cross-sectional view of the cable processing equipment in the embodiment;

[0025] Figure 3 An exploded view of the forming mechanism in the embodiment;

[0026] Figure 4 for Figure 3 The enlarged view of the area marked with number A;

[0027] Figure 5 is a cross-sectional view of a molding mechanism in an embodiment;

[0028] Figure 6 for Figure 5 Enlarged view of the area marked B.

[0029] In the figure: 10-equipment base, 11-feed hopper, 12-control panel, 21-hot melt outer shell, 22-hot melt inner shell, 23-main electric heating ring, 24-extrusion screw, 25-drive motor, 26-auxiliary heating outer shell, 27-auxiliary electric heating ring, 28-inspection plate, 31-transverse tube, 32-longitudinal tube, 33-positioning plate, 34-slide, 35-slip ring, 36-sealing ring, 37-tension spring, 381-round tube, 3811-positioning screw, 3812-air hole, 3813-blocking edge, 382-limiting ring, 3821-air inlet nozzle, 383-internal thread ring, 384-transition tube, 385-molding tube, 386-assembly bracket, 387-rotating shaft, 3871-torsion spring, 388-flip clamping frame, 389-clamping roller. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-6 , this embodiment provides a cable processing device, including a device base 10, a hot melt mechanism and a molding mechanism.

[0032] A feed hopper 11 is provided on the upper side of the equipment base 10 , and a control panel 12 is provided on the front side of the equipment base 10 .

[0033] The hot melt mechanism includes a hot melt outer shell 21 and a hot melt inner shell 22 arranged in the hot melt outer shell 21, the lower end of the feed hopper 11 extends into the hot melt inner shell 22, the outer wall of the hot melt inner shell 22 is provided with a plurality of main electric heating rings 23, and an extrusion screw 24 is arranged in the hot melt inner shell 22; a driving motor 25 is provided on the left side of the hot melt outer shell 21, and the output shaft of the driving motor 25 passes through the hot melt outer shell 21 and is connected with the extrusion screw 24, and the signal controlled ends of the main electric heating ring 23 and the driving motor 25 are both connected to the signal control end of the control panel 12; an auxiliary heating outer shell 26 is arranged between the hot melt outer shell 21 and the hot melt inner shell 22, and a plurality of auxiliary electric heating rings 27 are arranged on the outer wall of the auxiliary heating outer shell 26, and there is a clearance fit between two adjacent main electric heating rings 23 and two adjacent auxiliary electric heating rings 27, and the auxiliary electric heating ring 27 covers the gap between two adjacent main electric heating rings 23 from the outside, and the signal controlled end of the auxiliary electric heating ring 27 is connected to the signal control end of the control panel 12. An inspection plate 28 is provided on the hot melt housing 21 and the auxiliary heat housing 26 .

[0034] The molding mechanism includes a molding shell and a molding assembly arranged in the molding shell. The molding shell is located on the right side of the hot-melt outer shell 21. The molding shell is a T-shaped tube. The molding shell includes a transverse tube 31 and a longitudinal tube 32. The transverse tube 31 is connected to the discharge port of the hot-melt inner shell 22 by bolt assembly; the molding assembly is located in the longitudinal tube 32.

[0035] The forming mechanism also includes a positioning plate 33, a slide groove 34, a sliding ring 35 and a sealing ring 36. The positioning plate 33 is arranged on the inner wall of the longitudinal tube 32, the slide groove 34 is arranged in the middle of the transverse tube 31, the sliding ring 35 is slidably connected in the slide groove 34, a tension spring 37 is arranged between the inner end of the sliding ring 35 and the bottom of the slide groove 34, and a sealing ring 36 is arranged on the outer end of the sliding ring 35. The inner diameter of the sealing ring 36 is smaller than the inner diameter of the transverse tube 31 of the T-tube, and the outer diameter of the sealing ring 36 is larger than the inner diameter of the transverse tube 31 of the T-tube.

[0036] The forming assembly includes a round tube 381, a stop ring 382 and an internal thread ring 383. The round tube 381 is located inside the longitudinal tube 32. The outer wall of the round tube 381 is provided with a flat portion that cooperates with the positioning plate 33. The feed hole of the round tube 381 is connected to the transverse tube 31. The transition tube 384 and the forming tube 385 are fixedly connected inside the round tube 381. The stop ring 382 is arranged at the outer rear end of the round tube 381. The stop ring 382 is installed in cooperation with the longitudinal tube 32. The internal thread ring 383 is threadedly connected to the front end of the round tube 381. Three assembly brackets 386 are arranged evenly in the circumference, preferably one at the top and two at the side. The interior of the assembly brackets 386 are all rotatably connected to the flip clamping frame 388 through the rotating shaft 387. The end of the flip clamping frame 388 close to the central axis of the round tube 381 is rotatably connected to the clamping roller 389 through the rotating shaft. A torsion spring 3871 is provided on the outer movable sleeve of the rotating shaft 387 , and one end of the torsion spring 3871 is fixedly connected to the assembly bracket 386 , and the other end is fixedly connected to the rotating shaft 387 .

[0037] A positioning screw 3811 is inserted into the flat portion of the circular tube 381, a screw hole matching the positioning screw 3811 is arranged on the forming tube 385, the forming tube 385 is sealingly slidably arranged in the circular tube 381 and fixed by the positioning screw 3811, an air hole 3812 is arranged in the positioning screw 3811, one end of the air hole is communicated with the gap between the circular tube 381 and the longitudinal tube 32, and the other end is communicated with the gap between the circular tube 381 and the forming tube 385, an air inlet nozzle 3821 is arranged on the limiting ring 382, ​​and the air entering from the air inlet nozzle 3821 is sent into one end of the gap between the circular tube 381 and the forming tube 385 through the air hole 3812, and discharged from the other end of the gap between the circular tube 381 and the forming tube 385. Please participate Figure 6 The inner wall of the round tube 381 is provided with a retaining edge 3813, one end of the transition tube 384 is threadedly fixed with the retaining edge 3811, and the other end of the transition tube 384 extends into the forming tube 385, and the transition tube 384 is located on one side of the feeding hole of the round tube 381.

[0038] The method of using the cable processing equipment in this embodiment is as follows:

[0039] One end of the cable core passes through three clamping rollers 389, and is connected to the traction equipment after passing through the transition tube 384 and the forming tube 385. During this process, the force of the cable core on the clamping roller 389 causes the flip clamping frame 388 to overcome the torsion force of the torsion spring 3871 and rotate. Under the torsion force of the torsion spring 3871, the clamping roller 389 contacts the cable core, and the cable core is clamped by the cooperation of three annularly distributed clamping rollers 389, so that the cable core and the circular tube 381 are coaxial.

[0040] The plastic particles added by the feed hopper 11 slide into the hot-melt inner shell 22, and the main electric heating ring 23 and the auxiliary electric heating ring 27 heat the plastic particles to a molten state. After the drive motor 25 is started, it drives the extrusion screw 24 to push the molten plastic into the round tube 381, and enters the molding tube 385 under the guidance of the transition tube 384. As the cable core is continuously pulled and moved, the plastic is extruded on the outside of the cable core.

[0041] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Cable processing equipment, characterized in that: It comprises a device base (10), a hot-melt mechanism and a molding mechanism; A feed hopper (11) is provided on the upper side of the equipment base (10), and a control panel (12) is provided on the front side of the equipment base (10); The hot melt mechanism comprises a hot melt outer shell (21) and a hot melt inner shell (22) arranged in the hot melt outer shell (21); the lower end of the feed hopper (11) extends into the hot melt inner shell (22); the outer wall of the hot melt inner shell (22) is provided with a plurality of main electric heating rings (23); and an extrusion screw (24) is arranged in the hot melt inner shell (22); a drive motor (25) is arranged on the left side of the hot melt outer shell (21); the output shaft of the drive motor (25) passes through the hot melt outer shell (21) and is connected to the extrusion screw (24); the signal controlled ends of the main electric heating rings (23) and the drive motor (25) are both connected to the signal control end of the control panel (12); The molding mechanism comprises a molding shell and a molding assembly arranged in the molding shell, the molding shell is located on the right side of the hot-melt shell (21), the molding shell is a T-shaped tube, the molding shell comprises a transverse tube (31) and a longitudinal tube (32), the transverse tube (31) is assembled and connected to the discharge port of the hot-melt inner shell (22) by bolts; the molding assembly is located in the longitudinal tube (32); The forming mechanism further comprises a positioning plate (33), a slide groove (34), a sliding ring (35) and a sealing ring (36); the positioning plate (33) is arranged on the inner wall of the longitudinal tube (32); the slide groove (34) is arranged in the middle of the transverse tube (31); the sliding ring (35) is slidably connected in the slide groove (34); a tension spring (37) is arranged between the inner end of the sliding ring (35) and the bottom of the slide groove (34); a sealing ring (36) is arranged at the outer end of the sliding ring (35); the inner diameter of the sealing ring (36) is smaller than the inner diameter of the transverse tube (31) of the T-tube; and the outer diameter of the sealing ring (36) is larger than the inner diameter of the transverse tube (31) of the T-tube; The molding assembly comprises a round tube (381), a limiting ring (382) and an internal thread ring (383); the round tube (381) is located inside the longitudinal tube (32); the outer wall of the round tube (381) is provided with a flat surface portion which is mounted in cooperation with the positioning plate (33); the feed hole of the round tube (381) is connected with the transverse tube (31); the round tube (381) is in contact with the sealing ring (36); a transition tube (384) and a molding tube (385) are respectively provided inside the round tube (381); the transition tube (384) is located on one side of the feed hole of the round tube (381); one end of the transition tube (384) extends into the molding tube (385); a positioning screw (3811) is inserted into the flat surface portion of the round tube (381); a screw hole which is compatible with the positioning screw (3811) is provided on the molding tube (385); the molding tube (385) is sealingly slidably arranged on the round tube (381); The circular tube (381) is fixed by a positioning screw (3811), an air hole (3812) is arranged in the positioning screw (3811), one end of the air hole is communicated with the gap between the circular tube (381) and the longitudinal tube (32), and the other end is communicated with the gap between the circular tube (381) and the forming tube (385), an air inlet nozzle (3821) is arranged on the limiting ring (382), and air entering through the air inlet nozzle (3821) is sent into one end of the gap between the circular tube (381) and the forming tube (385) through the air hole (3812), and discharged from the other end of the gap between the circular tube (381) and the forming tube (385); a retaining edge (3813) is arranged on the inner wall of the circular tube (381), one end of the transition tube (384) is fixed to the retaining edge (3813) by a thread, and the other end of the transition tube (384) extends into the forming tube (385).

2. The cable processing equipment according to claim 1, characterized in that: An auxiliary heat shell (26) is arranged between the hot-melt outer shell (21) and the hot-melt inner shell (22); a plurality of auxiliary electric heating rings (27) are arranged on the outer wall of the auxiliary heat shell (26); two adjacent main electric heating rings (23) and two adjacent auxiliary electric heating rings (27) are gap-fitted; the auxiliary electric heating ring (27) covers the gap between two adjacent main electric heating rings (23) from the outside; and a signal-controlled end of the auxiliary electric heating ring (27) is connected to a signal-controlling end of the control panel (12).

3. The cable processing equipment according to claim 1, characterized in that: Inspection panels are provided on the hot melt housing (21) and the auxiliary heat housing (26).

4. The cable processing equipment according to claim 1, characterized in that: The limiting ring (382) is arranged at the outer rear end of the circular tube (381), the limiting ring (382) is installed in cooperation with the longitudinal tube (32), and the internal thread ring (383) is threadedly connected to the front end of the circular tube (381).

5. The cable processing equipment according to claim 4, characterized in that: A plurality of assembly brackets (386) are arranged on the inner wall of the circular tube (381), and the interior of the assembly brackets (386) is rotatably connected to a flip clamping bracket (388) via a rotating shaft (387), and one end of the flip clamping bracket (388) close to the central axis of the circular tube (381) is rotatably connected to a clamping roller (389) via a rotating shaft.

6. The cable processing equipment according to claim 5, characterized in that: The outer movable sleeve of the rotating shaft (387) is provided with a torsion spring (3871), one end of the torsion spring (3871) is fixedly connected to the assembly bracket (386), and the other end is fixedly connected to the rotating shaft (387).

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