Cable insulation extruder capable of automatically adjusting concentricity

Abstract

The utility model discloses a cable insulation extruder capable of automatically adjusting concentricity, which relates to the technical field of extruders and comprises a mounting barrel and a forming assembly. A discharging opening is formed in the lower end of the left side of the circumferential surface of the mounting barrel, a discharging pipe is fixed in the discharging opening, a feeding assembly is mounted in the mounting barrel, and a heat preservation assembly is mounted on the circumferential surface of the mounting barrel; the forming assembly comprises a die sleeve, a die core and a guide pipe, the lower end of the discharging pipe is fixed into a material injection opening formed in the surface of the die sleeve, the die core is arranged in the die sleeve and located in the middle of the die sleeve, the guide pipe is fixed to the front end of the die sleeve, and the guide pipe corresponds to a discharging opening in the middle of the front end of the die sleeve. A deviation adjusting assembly and an extrusion assembly are installed on the surface of the die sleeve and matched with each other, and the concentricity of the die core and the die sleeve can be automatically adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to a cable insulation extruder capable of automatically adjusting concentricity. Background Art

[0002] As cable production technology becomes more mature and the competition in the cable market becomes fierce, the efficiency, refinement and cost advantage of cable production have become more and more important indicators for evaluating whether a company has core competitiveness. In addition, the production of cables is diversified, the structures are diverse and new products are constantly being developed. This has led to the phenomenon of constantly replacing extrusion molds to adapt to the production of different types of cables during the cable production process.

[0003] In the related art, conventional extrusion molds consist of two parts: a mold sleeve and a mold core. Indoor cables are generally extruded tube structures, that is, the produced sheath is a round tube with a certain wall thickness. When producing products with different outer diameters or sheath products with different thicknesses, the mold core needs to be replaced, and then the relative position of the mold core is adjusted by adjusting the deviation screw. The concentricity of the extruded sheath needs to be repeatedly measured to determine the concentricity of the mold core and the mold cover. If there is eccentricity, the above adjustment steps are repeated until the mold core and the mold sleeve are concentric. The above operation must be repeated for each production, and there will be a certain deviation in the modulation result each time, which is inefficient. In addition, the adjustment process will also waste some raw materials, increasing manufacturing costs. For this reason, we propose a cable insulation extruder with automatic concentricity adjustment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a cable insulation extruder with automatic concentricity adjustment, which can automatically adjust the concentricity of the mold core and the mold sleeve, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned object, the present utility model provides the following technical solutions: a cable insulation extruder with automatic concentricity adjustment, comprising a mounting barrel and a molding assembly;

[0006] Installation barrel: A discharge port is opened at the lower end of the left side of the circumferential surface, a discharge pipe is fixed inside the discharge port, a feeding assembly is installed inside the installation barrel, and a heat preservation assembly is installed on the circumferential surface of the installation barrel;

[0007] Molding assembly: includes a mold sleeve, a mold core and a guide tube. The lower end of the discharge tube is fixed inside the injection port set on the surface of the mold sleeve. A mold core is set inside the mold sleeve. The mold core is located in the middle of the mold sleeve. A guide tube is fixed at the front end of the mold sleeve. The guide tube corresponds to the discharge port in the middle of the front end of the mold sleeve. The surface of the mold sleeve is installed with an adjustment assembly and an extrusion assembly. The adjustment assembly and the extrusion assembly cooperate to extrude the cable into shape through the molding assembly.

[0008] Furthermore, the deviation adjustment component includes a slide rod, an oblique block, an arc plate and a spring. The circumferential surface of the mold sleeve is provided with evenly distributed sliding holes. The sliding holes are slidably connected to the slide rod inside. The end face of the slide rod located outside the mold sleeve is fixed with an oblique block. The end face of the slide rod located inside the mold sleeve is fixed with an arc plate. The circumferential surface of the slide rod is sleeved with a spring. One end of the spring is fixed on the circumferential surface of the mold sleeve, and the other end of the spring is fixed on the side of the oblique block. By setting the deviation adjustment component, the concentricity of the mold core can be adjusted and fixed at the same time.

[0009] Furthermore, the extrusion assembly includes a threaded ring, a swivel, an extrusion block and a guide rod. The surface of the mold sleeve is provided with evenly distributed thread grooves. The surface of the mold sleeve is threadedly connected to the threaded ring. The front end of the threaded ring is rotatably connected to the swivel. The front end of the swivel is fixed with evenly distributed extrusion blocks. The extrusion blocks fit into the inclined surface of the oblique blocks. A guide groove is provided in the middle of the oblique blocks. The inside of the guide groove is slidably connected to the guide rod. The guide rod is fixed on the side of the extrusion block. All the oblique blocks are extruded by setting the extrusion assembly.

[0010] Furthermore, the feeding assembly includes a feed pipe, a motor and a spiral feeding rod. The spiral feeding rod is rotatably connected to the inside of the mounting barrel. The right end of the mounting barrel is installed with a motor. The output shaft of the motor is fixed to the right end of the spiral feeding rod. The feed pipe is fixed inside the feed port provided at the upper end of the right side of the circumferential surface of the mounting barrel. The input end of the motor is electrically connected to the output end of the external PLC controller. The feeding assembly is set to drive the wire sheath material required for cable production to be transported.

[0011] Furthermore, the insulation component includes a support base, an installation box, an electric heating tube and a temperature sensor. The installation box is fixed on the upper side of the support base. A connecting hole is opened in the middle of the installation box. The installation barrel is fixed inside the connecting hole. The interior of the installation box is installed with a temperature sensor and evenly distributed electric heating tubes. The input end of the electric heating tube is electrically connected to the output end of an external PLC controller. The temperature sensor is electrically connected to the external PLC controller in both directions. The temperature inside the installation barrel is prevented from dropping by setting the insulation component.

[0012] Furthermore, a clamping ring is fixed to the rear end of the circumferential surface of the mold core, and a fixing ring is fixed to the rear end of the mold sleeve. An annular groove is provided at the rear end of the fixing ring, and the clamping ring is clamped inside the annular groove. By arranging the fixing ring, the annular groove and the clamping ring, material leakage inside the mold sleeve is avoided.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the cable insulation extruder with automatic concentricity adjustment has the following advantages:

[0014] By setting up the deviation adjustment component, when the mold core is replaced, the replaced mold core can be inserted into the interior of the mold sleeve. After insertion, the clamping ring at the rear end of the mold core will be clamped in the inside of the annular groove opened at the rear end of the fixed ring. Then the threaded ring is rotated to move forward to drive all the extrusion blocks to move forward to extrude all the oblique blocks. After extrusion, it will drive all the sliding rods located at one end inside the mold sleeve to move synchronously and gradually approach the mold core, thereby driving all the arc plates to approach the mold core. After approaching, the mold core can be fixed. After fixation, all the arc plates will ensure that the concentricity of the mold core and the mold sleeve is consistent, and the user does not need to repeatedly adjust, which greatly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the feeding assembly of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the molding component of the utility model;

[0018] Figure 4 This is an enlarged structural diagram of the utility model A.

[0019] In the figure: 1 mounting barrel, 2 discharge pipe, 3 feeding assembly, 31 feeding pipe, 32 motor, 33 spiral feeding rod, 4 insulation assembly, 41 support seat, 42 mounting box, 43 electric heating tube, 44 temperature sensor, 5 forming assembly, 51 mold sleeve, 52 mold core, 53 guide tube, 6 deviation adjustment assembly, 61 slide rod, 62 oblique block, 63 arc plate, 64 spring, 7 extrusion assembly, 71 threaded ring, 72 swivel, 73 extrusion block, 74 guide rod, 8 clamping ring, 9 fixing ring. DETAILED DESCRIPTION

[0020] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 , this embodiment provides a technical solution: a cable insulation extruder with automatic concentricity adjustment, comprising a mounting barrel 1 and a molding assembly 5;

[0022] Installation barrel 1: A discharge port is provided at the lower end on the left side of the circumferential surface, a discharge pipe 2 is fixed inside the discharge port, a feeding assembly 3 is installed inside the installation barrel 1, a heat preservation assembly 4 is installed on the circumferential surface of the installation barrel 1, the feeding assembly 3 comprises a feeding pipe 31, a motor 32 and a spiral feeding rod 33, the spiral feeding rod 33 is connected to the interior of the installation barrel 1, a motor 32 is installed on the right end of the installation barrel 1, the output shaft of the motor 32 is fixed to the right end of the spiral feeding rod 33, a feeding port arranged at the upper end on the right side of the circumferential surface of the installation barrel 1 is fixed inside with a feeding pipe 31, the input end of the motor 32 is electrically connected to the output end of the external PLC controller, and the heat preservation assembly 4 is installed on the circumferential surface of the installation barrel 1. The temperature component 4 includes a support base 41, an installation box 42, an electric heating pipe 43 and a temperature sensor 44. The installation box 42 is fixed on the upper side of the support base 41. A connection hole is opened in the middle of the installation box 42. The installation barrel 1 is fixed inside the connection hole. The interior of the installation box 42 is installed with a temperature sensor 44 and evenly distributed electric heating pipes 43. The input end of the electric heating pipe 43 is electrically connected to the output end of the external PLC controller. The temperature sensor 44 is bidirectionally electrically connected to the external PLC controller. The temperature inside the installation barrel 1 is prevented from decreasing by providing the heat preservation component 4. The feeding component 3 is provided to drive the wire sheath material required for cable production to be transported.

[0023] The molding component 5 includes a mold sleeve 51, a mold core 52 and a guide tube 53. The lower end of the discharge tube 2 is fixed inside the injection port provided on the surface of the mold sleeve 51. The mold sleeve 51 is provided with a mold core 52. The mold core 52 is located in the middle of the mold sleeve 51. The front end of the mold sleeve 51 is fixed with a guide tube 53. The guide tube 53 corresponds to the discharge port in the middle of the front end of the mold sleeve 51. The surface of the mold sleeve 51 is installed with an adjustment component 6 and an extrusion component 7. The adjustment component 6 and the extrusion component 7 cooperate with each other. The adjustment component 6 includes a slide rod 61, an oblique block 62, an arc plate 63 and a spring 64. The circumferential surface of the mold sleeve 51 is provided with evenly distributed sliding holes. The interior of the sliding hole is slidably connected with a slide rod 61. The end surface of the slide rod 61 located on the outside of the mold sleeve 51 is fixed with an oblique block 62. The end surface of the slide rod 61 located on the inside of the mold sleeve 51 is fixed with an arc plate 63. The circumferential surface of the slide rod 61 is sleeved with a spring 64. One end of the spring 64 is fixed on the circumferential surface of the die sleeve 51, and the other end of the spring 64 is fixed on the side of the oblique block 62. The extrusion assembly 7 includes a threaded ring 71, a swivel 72, an extrusion block 73 and a guide rod 74. The surface of the die sleeve 51 is provided with evenly distributed thread grooves, and the surface of the die sleeve 51 is threadedly connected with a threaded ring 71. The front end of the threaded ring 71 is rotatably connected with a swivel 72. The front end of the swivel 72 is fixed with evenly distributed extrusion blocks 73. The extrusion blocks 73 fit into the inclined surface of the oblique block 62. A guide groove is provided in the middle of the oblique block 62. The inside of the guide groove is slidably connected with a guide rod 74. The guide rod 74 is fixed on the side of the extrusion block 73. By setting the extrusion assembly 7, all the oblique blocks 62 are extruded, and by setting the deviation adjustment assembly 6, the concentricity of the mold core 52 is adjusted and fixed at the same time. The cable is extruded and formed by the molding assembly 5.

[0024] Among them: a clamping ring 8 is fixed to the rear end of the circumferential surface of the mold core 52, and a fixing ring 9 is fixed to the rear end of the mold sleeve 51. An annular groove is opened at the rear end of the fixing ring 9, and the clamping ring 8 is clamped inside the annular groove. By setting the fixing ring 9, the annular groove and the clamping ring 8, material leakage inside the mold sleeve 51 is avoided.

[0025] The working principle of the cable insulation extruder with automatic concentricity adjustment provided by the present invention is as follows: during normal use, the wire core required for the cable is inserted into the interior of the mold core 52, and then the wire core is driven by the external wire feeding mechanism to move forward along the mold core 52 through the mold sleeve 51, and the melted wire sheath material is injected into the interior of the installation barrel 1 during its movement, and then the motor 33 is started to rotate the spiral feeding rod 33, and the melted material can be injected into the interior of the discharge tube 2 during its rotation. During the injection process, all the electric heating tubes 43 are started to add the material inside the installation barrel 1 to prevent it from cooling and solidifying. The material entering the discharge tube 2 will pass downward between the mold sleeve 51 and the mold core 52 The gap moves forward to cover the surface of the wire core. When the mold core 52 is replaced, the replaced mold core 52 can be inserted into the interior of the mold sleeve 51. After insertion, the clamping ring 8 at the rear end of the mold core 52 will be clamped in the inside of the annular groove opened at the rear end of the fixing ring 9. Then the threaded ring 71 is rotated to move forward to drive all the extrusion blocks 73 to move forward to extrude all the oblique blocks 62. After extrusion, all the sliding rods 61 located at one end inside the mold sleeve 51 will move synchronously and gradually approach the mold core 52, thereby driving all the arc plates 63 to approach the mold core 52. After approaching, the mold core can be fixed. After fixation, all the arc plates 63 will ensure that the concentricity of the mold core 52 and the mold sleeve 51 is consistent, and the user does not need to repeatedly adjust, which greatly improves the production efficiency.

[0026] It is worth noting that the external PLC controller disclosed in the above embodiment is specifically a Siemens S7-200, the motor 32 can be a 1LE0003 three-phase asynchronous motor, the electric heating tube 43 can be a 19*205-K electric heating tube, and the temperature sensor 44 can be a LSCI-TZ03 laser focusing infrared temperature sensor. The external PLC controller controls the operation of the motor 32 and the electric heating tube 43 using methods commonly used in the prior art.

[0027] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Automatic concentricity adjustment cable insulation extruder, characterized by: It includes a mounting barrel (1) and a molding assembly (5); Mounting barrel (1): a discharge port is provided at the lower end on the left side of the circumferential surface, a discharge pipe (2) is fixed inside the discharge port, a feeding assembly (3) is installed inside the mounting barrel (1), and a heat preservation assembly (4) is installed on the circumferential surface of the mounting barrel (1); A molding assembly (5): comprising a mold sleeve (51), a mold core (52) and a guide tube (53); the lower end of the discharge tube (2) is fixed inside the injection port provided on the surface of the mold sleeve (51); a mold core (52) is provided inside the mold sleeve (51); the mold core (52) is located in the middle of the mold sleeve (51); a guide tube (53) is fixed at the front end of the mold sleeve (51); the guide tube (53) corresponds to the discharge port in the middle of the front end of the mold sleeve (51); an adjustment assembly (6) and an extrusion assembly (7) are installed on the surface of the mold sleeve (51); the adjustment assembly (6) and the extrusion assembly (7) cooperate with each other.

2. The cable insulation extruder with automatic concentricity adjustment according to claim 1, characterized in that: The deflection adjustment component (6) includes a slide rod (61), an oblique block (62), an arc plate (63) and a spring (64). The circumferential surface of the mold sleeve (51) is provided with evenly distributed sliding holes. The interior of the sliding hole is slidably connected to the slide rod (61). The end surface of the slide rod (61) located outside the mold sleeve (51) is fixed with the oblique block (62). The end surface of the slide rod (61) located inside the mold sleeve (51) is fixed with the arc plate (63). The circumferential surface of the slide rod (61) is sleeved with a spring (64). One end of the spring (64) is fixed to the circumferential surface of the mold sleeve (51), and the other end of the spring (64) is fixed to the side of the oblique block (62).

3. The cable insulation extruder with automatic concentricity adjustment according to claim 2, characterized in that: The extrusion assembly (7) comprises a threaded ring (71), a rotating ring (72), an extrusion block (73) and a guide rod (74). The surface of the die sleeve (51) is provided with evenly distributed thread grooves. The surface of the die sleeve (51) is threadedly connected to the threaded ring (71). The front end of the threaded ring (71) is rotatably connected to the rotating ring (72). The front end of the rotating ring (72) is fixed with evenly distributed extrusion blocks (73). The extrusion blocks (73) are fitted with the inclined surface of the oblique block (62). The middle part of the oblique block (62) is provided with a guide groove. The inside of the guide groove is slidably connected to the guide rod (74). The guide rod (74) is fixed to the side of the extrusion block (73).

4. The cable insulation extruder with automatic concentricity adjustment according to claim 1, characterized in that: The feeding assembly (3) comprises a feeding pipe (31), a motor (32) and a spiral feeding rod (33); the interior of the mounting barrel (1) is rotatably connected to the spiral feeding rod (33); the right end of the mounting barrel (1) is mounted with a motor (32); the output shaft of the motor (32) is fixed to the right end of the spiral feeding rod (33); the interior of the feeding port provided at the upper end of the right side of the circumferential surface of the mounting barrel (1) is fixed with a feeding pipe (31); the input end of the motor (32) is electrically connected to the output end of an external PLC controller.

5. The cable insulation extruder with automatic concentricity adjustment according to claim 1, characterized in that: The heat preservation component (4) comprises a support base (41), an installation box (42), an electric heating pipe (43) and a temperature sensor (44); the installation box (42) is fixed on the upper side of the support base (41); a connection hole is opened in the middle of the installation box (42); the installation barrel (1) is fixed inside the connection hole; the temperature sensor (44) and evenly distributed electric heating pipes (43) are installed inside the installation box (42); the input end of the electric heating pipe (43) is electrically connected to the output end of an external PLC controller; the temperature sensor (44) is bidirectionally electrically connected to the external PLC controller.

6. The cable insulation extruder with automatic concentricity adjustment according to claim 1, characterized in that: A clamping ring (8) is fixed to the rear end of the circumferential surface of the mold core (52), and a fixing ring (9) is fixed to the rear end of the mold sleeve (51). An annular groove is formed at the rear end of the fixing ring (9), and the clamping ring (8) is clamped inside the annular groove.

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