An extrusion equipment for cable production

Abstract

The present invention relates to the technical field of extruders, specifically to an extrusion equipment for cable production, including a barrel, a screw, a feed hopper and a filter assembly, wherein the screw is arranged in the barrel, the feed hopper is arranged at one end of the barrel, a machine head is arranged at the other end of the barrel, the filter assembly includes a filter plate, a filter screen and a pick-and-place rod, the filter plate is fixed in the machine head, the filter plate has an installation cavity inside, both sides of the filter plate are provided with filter holes connected to the installation cavity, the side of the filter plate is provided with a pick-and-place hole connected to the installation cavity, the machine head is provided with a corresponding port corresponding to the pick-and-place hole, a detachable seal is installed at the corresponding port, and the filter screen is elastic and fixed on the pick-and-place rod. The present invention uses the filter plate, the filter screen and the pick-and-place rod in coordination, and when the filter screen is blocked and needs to be disassembled for maintenance, the filter screen can be taken out for cleaning or replacement without disassembling the machine head, which simplifies the filter screen maintenance process, reduces the workload of equipment maintenance, and also improves production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of extruders, in particular to extrusion equipment for cable production. Background Art

[0002] In the field of wire and cable manufacturing, an extruder is a device used to wrap insulating materials or sheaths on the outside of cable conductors. Its function is to ensure that the cables have excellent electrical insulation performance and mechanical protection capabilities. Traditional extruders mainly include hoppers, screws, barrels, heads, and heating components. When working, plastic particles enter the barrel through the hopper and are pushed forward by the rotating screw. As the material moves along the screw, the plastic gradually melts and is extruded through the head under the action of the heating component, and finally evenly covers the cable conductor to form an insulating layer.

[0003] In order to ensure the quality of the extruded plastic, a porous plate and a filter are usually provided at the connection between the head and the barrel of the extruder. The porous plate plays the role of supporting the filter; and the filter effectively intercepts impurities in the plastic melt, improving the quality of the cable outer coating. However, when performing filter maintenance on most current extruders (such as when the filter is clogged), the entire head must be disassembled first, because the head is generally tightly connected to the barrel through a flange combined with bolts and nuts. This makes the filter replacement process cumbersome and time-consuming, increases the workload of equipment maintenance, and also reduces production efficiency. In view of the above problems, the present invention proposes an extrusion equipment for cable production. Summary of the invention

[0004] The object of the present invention is to provide an extrusion device for cable production, which is used to solve the problems raised in the above background technology.

[0005] The present invention is achieved through the following technical solutions:

[0006] A cable production extrusion device comprises a barrel, a screw, a feed hopper and a filter assembly, wherein the screw is arranged in the barrel, the feed hopper is arranged at one end of the barrel, and a machine head is arranged at the other end of the barrel, the filter assembly comprises a filter plate, a filter screen and a pick-up and release rod, the filter plate is fixed in the machine head, an installation cavity is provided inside the filter plate, filter holes connected to the installation cavity are arranged on both sides of the filter plate, a pick-up and release hole connected to the installation cavity is arranged on the side of the filter plate, a corresponding port corresponding to the pick-up and release hole is arranged on the machine head, a detachable sealing component is installed at the corresponding port, and the filter screen is elastic and fixed on the pick-up and release rod.

[0007] Optionally, the filter plate and the mounting cavity are both circular, and correspondingly, the filter screen is also circular, and the pick-and-place rod is fixed at the middle of the filter screen.

[0008] Optionally, a slot is provided on the pick-and-place rod, and the filter passes through the slot and is fixed by screws.

[0009] Optionally, the filter screen is fixed to one end of the pick-and-place rod, and the other end of the pick-and-place rod is configured as a polygonal column structure.

[0010] Optionally, the filter assembly further comprises a pick-up and release tube, one end of which is provided with a bayonet extending along its own axial direction, and a width of the bayonet is greater than a thickness of the filter screen and smaller than a width of the installation cavity.

[0011] Optionally, a guiding slope is provided on a hole wall on one side of a connection position between the taking-and-placing hole and the mounting cavity.

[0012] Optionally, the seal includes a sealing plug and an end cover, the sealing plug is composed of two semi-cylindrical rubber components, the sealing plug is used to seal the gap between the picking and placing rod and the corresponding port and the opening part of the picking and placing hole, and the end cover is threadedly connected to the corresponding port and pressed against the sealing plug.

[0013] Optionally, the cable production extrusion equipment further comprises a heating component, which is an electromagnetic induction coil disposed outside the barrel and capable of induction heating the screw.

[0014] Compared with the prior art, the present invention provides an extrusion device for cable production, which has the following beneficial effects:

[0015] 1. The present invention uses the filter plate, the filter screen and the pick-and-place rod in coordination. When the filter screen is clogged and needs to be disassembled for maintenance, the filter screen can be taken out for cleaning or replacement without disassembling the machine head, which simplifies the filter screen maintenance process, reduces the workload of equipment maintenance, and also improves production efficiency;

[0016] 2. The filter assembly of the present invention comprises a pick-up and release tube, one end of which is provided with a bayonet extending along its own axial direction, the width of which is greater than the thickness of the filter screen and less than the width of the installation cavity, so that the smoothness of the filter screen deployment process can be improved, thereby improving the installation efficiency of the filter screen;

[0017] 3. The present invention provides a guiding slope on the hole wall at one side of the connection position between the pick-up hole and the installation cavity. When the filter net on the pick-up rod needs to be unfolded in the installation cavity, the pick-up rod is rotated in the direction opposite to the winding direction of the filter net, and the edge of the filter net will enter the installation cavity under the guidance of the guiding slope, so as to facilitate the unfolding of the filter net in the installation cavity and improve the installation efficiency of the filter net. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-section structure;

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0021] Figure 4 It is a schematic diagram of the structure of the filter assembly of the present invention;

[0022] Figure 5 It is a schematic diagram of the split structure of the filter assembly of the present invention;

[0023] Figure 6 It is a schematic cross-sectional structure diagram of installing a filter screen using a filter assembly including a pick-up and drop tube according to the present invention;

[0024] Figure 7 It is a schematic cross-sectional structure diagram of a filter assembly without a pick-up and drop-off tube used in the present invention;

[0025] Figure 8 This is a schematic cross-sectional structure diagram of the present invention for installing a filter screen using a filter assembly that does not include a pick-up and drop tube.

[0026] In the figure: 1. barrel; 2. screw; 3. feed hopper; 4. filter assembly; 40. filter plate; 400. mounting cavity; 401. filter hole; 402. pick-up and release hole; 403. guide slope; 41. filter screen; 42. pick-up and release rod; 420. slot; 421. multi-prism structure; 43. screw; 44. pick-up and release tube; 440. bayonet; 5. machine head; 50. corresponding port; 6. seal; 60. sealing plug; 61. end cover; 7. electromagnetic induction coil; 8. motor. DETAILED DESCRIPTION

[0027] 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.

[0028] Example: See Figures 1 to 8According to an embodiment of the present invention, an extrusion device for cable production is provided, which includes a barrel 1, a screw 2, a feed hopper 3 and a filter assembly 4, wherein the screw 2 is arranged in the barrel 1 and driven to rotate by a motor 8, a feed hopper 3 is arranged at one end of the barrel 1 to add materials (such as plastic particles for making cable insulation layers) therein, a head 5 is arranged at the other end of the barrel 1, and the materials are discharged through the head 5, and the filter assembly 4 includes a filter plate 40, a filter screen 41 and a pick-up and release rod 42, and the filter plate 40 is fixed The filter plate 40 is fixed in the machine head 5, and has an installation cavity 400 inside. Filter holes 401 connected to the installation cavity 400 are arranged on both sides of the filter plate 40. A pick-up and release hole 402 connected to the installation cavity 400 is arranged on the side of the filter plate 40. A corresponding port 50 corresponding to the pick-up and release hole 402 is arranged on the machine head 5. A detachable sealing member 6 is installed at the corresponding port 50. The sealing member 6 plays a role in sealing the corresponding port 50 to prevent the material from overflowing from this position. The filter net 41 is elastic and fixed on the pick-up and release rod 42.

[0029] In the extrusion equipment for cable production using the above structure, when working, the filter screen 41 is located in the installation cavity 400 of the filter plate 40, and the filter plate 40 plays the role of supporting and fixing the filter screen 41, preventing the filter screen 41 from being deformed and displaced under the pressure of the material, and ensuring sufficient filtering of the material. When the filter screen 41 is blocked and needs to be disassembled for maintenance, the seal 6 at the position of the corresponding port 50 is first removed, and then the pick-up and release rod 42 is rotated to make the filter screen 41 wound on the pick-up and release rod 42, and finally the rolled filter screen 41 is taken out from the connecting position between the pick-up and release hole 402 and the corresponding port 50, thereby completing the disassembly of the filter screen 41. When installing a new or clean filter 41 into the installation cavity 400, first fix the filter 41 and wrap it around the pick-up rod 42, then insert the filter 41 into the installation cavity 400 from the corresponding opening 50 and the pick-up hole 402 through the pick-up rod 42, and after the filter 41 is sent into the installation cavity 400, rotate the pick-up rod 42 in the opposite direction to expand the filter 41 in the installation cavity 400, and the installation of the filter 41 is completed. It can be seen that the extrusion equipment can take out the filter 41 for cleaning or replacement without disassembling the head 5, which simplifies the maintenance process of the filter 41, reduces the workload of equipment maintenance, and also improves production efficiency.

[0030] Since the inner cavity cross-section of most barrels 1 is circular, in this exemplary embodiment, the filter plate 40 and the installation cavity 400 are both circular, and accordingly, the filter screen 41 is also circular, and the pick-up and placement rod 42 is fixed to the middle of the filter screen 41. In this arrangement, when the filter screen 41 on the pick-up and placement rod 42 needs to be unfolded in the installation cavity 400, the unfolding action of both sides of the filter screen 41 is synchronous, and similarly, when the filter screen 41 needs to be wound around the pick-up and placement rod 42 and taken out, the winding action of both sides of the filter screen 41 is also synchronous, which shows that the above design can effectively shorten the time for installing and removing the filter screen 41, thereby improving the efficiency of installing and removing the filter screen 41.

[0031] In this exemplary embodiment, a slot 420 is provided on the pick-and-place rod 42, and the filter 41 passes through the slot 420 and is fixed by screws 43. In this arrangement, since the filter 41 is more easily damaged than the pick-and-place rod 42, the filter 41 is detachably mounted in the slot 420 of the pick-and-place rod 42 by using screws 43, so that the removal of the filter 41 becomes simple, and the pick-and-place rod 42 is convenient for repeated use. In addition, the pick-and-place rod 42 can also support the middle part of the filter 41 to reduce the deformation of the filter 41.

[0032] In order to further improve the efficiency of disassembling and assembling the filter 41, in this exemplary embodiment, the filter 41 is fixed to one end of the pick-up and placement rod 42, and the other end of the pick-up and placement rod 42 is configured as a polygonal column structure 421. The polygonal column structure 421 can be used in conjunction with an electric drill, and the electric drill is used to drive the pick-up and placement rod 42 to rotate forward and reverse, which is more time-saving and labor-saving, and thus facilitates the disassembly and assembly of the filter 41.

[0033] In this exemplary embodiment, the filter assembly 4 also includes a pick-up and release tube 44 , one end of which is provided with a bayonet 440 extending along its own axial direction, and the width of the bayonet 440 is greater than the thickness of the filter screen 41 and smaller than the width of the installation cavity 400 . With such arrangement, when the filter 41 needs to be installed, the pick-up and release tube 44 can be sleeved on the outside of the pick-up and release rod 42, and the filter 41 can be embedded in the bayonet 440, and then the pick-up and release rod 42 can be rotated to wrap the filter 41 around the outside of the pick-up and release rod 42. It should be noted that the filter 41 should not be completely entered into the pick-up and release tube 44, and the edge of the filter 41 remains in the bayonet 440. Then, by inserting the built-in pick-up and release rod 42 and the pick-up and release tube 44 of the filter 41 into the installation cavity 400, and aligning the bayonet 440 of the pick-up and release rod 42 with the installation cavity 400, thereafter, the pick-up and release rod 42 is rotated in the opposite direction to allow the filter 41 to enter the installation cavity 400 through the bayonet 440 until it is fully unfolded. Since the width of the bayonet 440 is smaller than the width of the installation cavity 400, this can improve the smoothness of the unfolding process of the filter 41, thereby improving the installation efficiency of the filter 41.

[0034] like Figure 7 and Figure 8 As shown, in another embodiment, the filter assembly 4 may not include the pick-up and placement tube 44, and a guide slope 403 is provided on the hole wall on one side of the connection position between the pick-up and placement hole 402 and the installation cavity 400. In this way, when the filter screen 41 on the pick-up and placement rod 42 needs to be unfolded in the installation cavity 400, the pick-up and placement rod 42 is rotated in the direction opposite to the winding direction of the filter screen 41, and the edge of the filter screen 41 will enter the installation cavity 400 under the guidance of the guide slope 403, so as to facilitate the unfolding of the filter screen 41 in the installation cavity 400, thereby improving the installation efficiency of the filter screen 41.

[0035] Under the extrusion of the screw 2, the material in the barrel 1 may pass through the access hole 402 and the filter screen 41 directly to the head 5, which will result in poor filtering effect. In this exemplary embodiment, the sealing member 6 includes a sealing plug 60 and an end cover 61. The sealing plug 60 is composed of two semi-cylindrical rubber components. The sealing plug 60 is used to block the gap between the access rod 42 and the corresponding port 50 and the opening of the access hole 402. The end cover 61 is threadedly connected to the corresponding port 50 and pressed against the sealing plug 60. Specifically, an opening may be provided on the end cover 61, and the access rod 42 extends from the opening of the end cover 61. With such arrangement, after the filter screen 41 is installed, the pick-up and release rod 42 will extend from the corresponding port 50. At this time, the sealing plug 60 is clamped on both sides of the pick-up and release rod 42 and inserted from the corresponding port 50 until it reaches the pick-up and release hole 402 and abuts against the edge of the filter screen in the pick-up and release hole 402. Then the end cover 61 is connected to the corresponding port 50 and pressed against the sealing plug 60. In this way, the sealing plug 60 can not only seal the corresponding port 50 to prevent the corresponding port 50 from overflowing the material, but also block the opening position of the pick-up and release hole 402 to prevent the material in the barrel 1 from directly reaching the head 5 by passing over the filter screen 41 at the position of the pick-up and release hole 402 under the extrusion of the screw 2.

[0036] In this exemplary embodiment, the extrusion equipment for cable production further includes a heating component, which is an electromagnetic induction coil 7 disposed outside the barrel 1 and capable of induction heating the screw 2. When the screw 2 conveys the material entering the barrel from the feed hopper 3 toward the die 5, the electromagnetic induction coil 7 induction heats the screw 2, thereby achieving melting and stirring of the granular material.

[0037] Working principle: When installing the filter 41, first fix the filter 41 and wrap it around the pick-up and placement rod 42, then insert the filter 41 from the corresponding port 50 and the pick-up and placement hole 402 into the installation cavity 400 through the pick-up and placement rod 42. After the filter 41 is sent into the installation cavity 400, the pick-up and placement rod 42 is rotated in the opposite direction to unfold the filter 41 in the installation cavity 400. Then the corresponding port 50 is sealed by the seal 6. When the filter 41 is blocked and needs to be disassembled for maintenance, first remove the seal 6 at the position of the corresponding port 50, then rotate the pick-up and placement rod 42 to wrap the filter 41 around the pick-up and placement rod 42, and finally take out the rolled filter 41 from the connecting position between the pick-up and placement hole 402 and the corresponding port 50, thereby completing the disassembly of the filter 41. It can be seen that the extrusion equipment can take out the filter 41 for cleaning or replacement without disassembling the head 5, which simplifies the maintenance process of the filter 41, reduces the workload of equipment maintenance, and also improves production efficiency.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extrusion device for cable production, comprising a barrel (1), a screw (2), a feed hopper (3) and a filter assembly (4), wherein the screw (2) is arranged in the barrel (1), the feed hopper (3) is arranged at one end of the barrel (1), and a head (5) is arranged at the other end of the barrel (1), characterized in that: The filter assembly (4) comprises a filter plate (40), a filter screen (41) and a pick-and-place rod (42); the filter plate (40) is fixed in the machine head (5); a mounting cavity (400) is provided inside the filter plate (40); filter holes (401) connected to the mounting cavity (400) are provided on both sides of the filter plate (40); a pick-and-place hole (402) connected to the mounting cavity (400) is provided on the side of the filter plate (40); a corresponding port (50) corresponding to the pick-and-place hole (402) is provided on the machine head (5); a detachable sealing member (6) is installed at the corresponding port (50); the filter screen (41) is elastic and fixed to the pick-and-place rod (42); 2. The extrusion equipment for cable production according to claim 1, characterized in that: The filter plate (40) and the mounting cavity (400) are both circular, and correspondingly, the filter screen (41) is also circular, and the pick-and-place rod (42) is fixed in the middle of the filter screen (41).

3. The extrusion equipment for cable production according to claim 2, characterized in that: A slot (420) is provided on the pick-and-place rod (42), and the filter screen (41) passes through the slot (420) and is fixed by a screw (43).

4. The extrusion equipment for cable production according to claim 1, characterized in that: The filter screen (41) is fixed to one end of the pick-and-place rod (42), and the other end of the pick-and-place rod (42) is configured as a polygonal column structure (421).

5. The extrusion equipment for cable production according to claim 1, characterized in that: The filter assembly (4) further comprises a pick-up and release tube (44), one end of which is provided with a bayonet (440) extending along its own axial direction, the width of the bayonet (440) being greater than the thickness of the filter screen (41) and smaller than the width of the installation cavity (400).

6. The extrusion equipment for cable production according to claim 1, characterized in that: A guiding inclined surface (403) is provided on a hole wall on one side of the connection position between the taking-in and putting hole (402) and the installation cavity (400).

7. The extrusion equipment for cable production according to any one of claims 1 to 6, characterized in that: The sealing member (6) comprises a sealing plug (60) and an end cover (61). The sealing plug (60) is composed of two semi-cylindrical rubber components. The sealing plug (60) is used to seal the gap between the pick-and-place rod (42) and the corresponding port (50) and the opening portion of the pick-and-place hole (402). The end cover (61) is threadedly connected to the corresponding port (50) and pressed against the sealing plug (60).

8. The extrusion equipment for cable production according to any one of claims 1 to 6, characterized in that: It also includes a heating component, which is an electromagnetic induction coil (7) arranged outside the barrel (1) and capable of induction heating the screw (2).

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