An extrusion device for cable sheath processing

Abstract

The present invention relates to the field of cable processing technology, and in particular to an extrusion device for cable sheath processing, comprising a negative pressure suction mechanism, which comprises a silo, a recovery bin arranged below one side of the silo, a suction assembly arranged inside the recovery bin, a capping assembly arranged between the silo and the recovery bin for sealing plastic particles, and a driving assembly arranged above the recovery bin for driving the capping assembly. The present invention can separate the lower end of a limiting plate from a card slot on a capping plate, and when the capping plate loses downward pressure, a return spring drives the capping plate to slide upward along a fixed rod direction by virtue of spring resilience, thereby moving the lower end of the capping plate to the edge of a strip groove, thereby facilitating negative pressure to suck the plastic particles into the recovery bin, thereby realizing rapid suction and discharge of the plastic particles in the silo, and improving the replacement efficiency of the plastic particles.

Description

Technical Field

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

[0002] The cable sheath is an important part of the cable. It not only protects and supports the internal structure of the cable, but also has multiple functions such as insulation, flame retardancy, wear resistance, and corrosion resistance. The quality and performance of the cable sheath directly affect the service life, safety, and reliability of the cable. The existing cable sheath extrusion equipment usually discharges plastic particles evenly into the barrel through the silo, and then conveys, heats, and melts the incoming raw materials through the screw in the barrel, and then extrude them through the die to form the cable sheath. However, the silo of the extrusion equipment still has the following problems in actual use;

[0003] First, when the extrusion equipment needs to switch to produce different types of plastic particles, in order to avoid contamination and mixing between different materials, it is usually necessary to take out the remaining plastic particles in the silo. However, the silo is often set above the barrel, which is very inconvenient to take out the plastic particles in the silo, affecting production efficiency. In addition, there are often some plastic particles hidden in the silo, which causes contamination and mixing of materials during the switching production process. Secondly, some plastic particles may adhere to the silo wall due to static electricity and other characteristics, thereby affecting the suction and discharge effect of the plastic particles, resulting in residual plastic particles. Finally, due to the electrostatic adsorption force between plastic particles, plastic particles are very easy to form clumps, which causes accumulation and blockage at the inlet of the recycling bin, affecting the removal efficiency of plastic particles. Therefore, we propose an extrusion equipment for cable sheath processing. Summary of the invention

[0004] In view of the fact that the silo in the above-mentioned or prior art is often arranged above the barrel, it is very inconvenient to take out the plastic particles in the silo, which affects the production efficiency, and there are often some plastic particles hidden in the silo, which causes contamination and mixing of materials during the switching production process. Secondly, since some plastic particles may adhere to the silo wall due to static electricity and other characteristics, the suction and discharge effect of the plastic particles is affected, thereby causing residual plastic particles. Finally, due to the electrostatic adsorption force between the plastic particles, the plastic particles are very easy to form clumps, which causes the accumulation and blockage of the recovery bin inlet, affecting the efficiency of plastic particle removal. The present invention is proposed.

[0005] Therefore, an object of the present invention is to provide an extrusion device for cable sheath processing.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an extrusion device for cable sheath processing, comprising a negative pressure suction mechanism, which includes a silo, a recovery bin arranged below one side of the silo, a suction assembly arranged inside the recovery bin, and a capping assembly arranged between the silo and the recovery bin for sealing plastic particles, and a driving assembly arranged above the recovery bin for driving the capping assembly. A suction auxiliary mechanism is also arranged inside the silo, the suction auxiliary mechanism includes a first pull rope, and also includes a scraping assembly connected to one end of the first pull rope for scraping off plastic particles electrostatically adsorbed on the inner wall of the silo, and a stirring assembly arranged below the scraping assembly for stirring the plastic particles, and a second pull rope arranged between the scraping assembly and the stirring assembly for driving.

[0007] As a preferred solution of the extrusion equipment for cable sheath processing of the present invention, wherein: the suction component includes a filter screen arranged at the lower end of the inner cavity of the recovery bin, and the filter screen is arranged at an inclined angle to the inner cavity of the recovery bin, a bin door is arranged at the lower end of the recovery bin, and a negative pressure pipe is connected to the end of the recovery bin, the side of the recovery bin close to the silo is connected to the lower side of one side of the silo, and a strip groove is arranged on the side of the recovery bin close to the silo.

[0008] As a preferred solution of the extrusion equipment for cable sheath processing of the present invention, the cover assembly includes a cover plate arranged above the strip groove, fixing rods are arranged on both sides of the cover plate, the cover plate is slidably connected with the fixing rod, a return spring is sleeved on the outer wall of the fixing rod, a card slot is opened at the upper end of the cover plate, the size of the cover plate is adapted to the size of the strip groove, the cover plate is movably connected to the strip groove, and the width of the cover plate is the same as the opening width of the recovery bin;

[0009] The driving assembly includes a servo motor arranged above the recovery bin, a screw rod is installed at the output end of the servo motor, a limit plate is arranged above the cover plate, a side of the limit plate close to the bin is movably connected to the card slot, a side of the limit plate away from the bin is fixedly installed with a screw rod sleeve, the size of the screw rod is matched with the size of the screw rod sleeve, and the screw rod is threadedly connected to the screw rod sleeve, and a slider is fixedly installed at the end of the limit plate away from the bin.

[0010] As a preferred solution of the extrusion equipment for cable sheath processing of the present invention, wherein: a barrel is arranged below the silo, a valve is arranged at the lower end of the silo, the lower end of the valve is connected with the upper feed port of the barrel, a driving motor is arranged on the side of the barrel close to the recovery bin, a screw is installed on the output end of the driving motor, a heating chamber is arranged in the middle of the inner cavity of the barrel, the size of the screw is adapted to the inner cavity size of the heating chamber, the barrel has a head on the side away from the recovery bin, and the head is connected with the heating chamber.

[0011] As a preferred solution of the extrusion equipment for cable sheath processing of the present invention, the scraping assembly includes a scraping frame arranged in the inner cavity of the silo, the edge of the scraping frame is in contact with the inner wall of the silo, and the scraping frame is movably connected to the inner cavity of the silo, the upper edge of the scraping frame is inclined, and fixed blocks are fixedly installed on the inner sides of the front and rear ends of the scraping frame, the upper end of the fixed block is fixedly connected to the first pull rope, and the first pull rope is provided in two.

[0012] As a preferred solution of the extrusion equipment for cable sheath processing of the present invention, wherein: a support frame is welded on one side of the barrel, the inner side of the lower end of the support frame is detachably connected to the servo motor, a slide groove is provided on the side of the support frame close to the limit plate, the size of the slider is adapted to the size of the slide groove, and the slider is slidably connected to the slide groove, a plurality of guide wheels are distributed on the front and rear sides of the support frame, and the other end of the first pull rope passes around the guide wheel and is fixedly connected to the lower end of the limit plate.

[0013] As a preferred solution of the extrusion equipment for cable sheath processing of the present invention, wherein: the stirring assembly includes a stirring frame arranged below the scraping frame, the size of the stirring frame is the same as the size of the scraping frame, the stirring frame is fixedly connected to the inner wall of the silo, and a plurality of rotating grooves are opened on the inner side of the stirring frame, the rotating grooves are arranged in three, and the three rotating grooves are distributed in a herringbone shape, a straight rod is rotatably installed in the inner cavity of the rotating groove, a shell is fixedly installed at the lower end of the straight rod, and a clockwork spring is arranged in the inner cavity of the shell.

[0014] As a preferred solution of the extrusion equipment for cable sheath processing of the present invention, wherein: a rotating rod is arranged through the middle part of the inner cavity of the shell, one end of the clockwork spring is fixedly connected to the rotating rod, the other end of the clockwork spring is fixedly connected to the inner cavity of the shell, a winding drum is fixedly installed on the lower end of the rotating rod, a second pull rope is wound around the outer wall of the winding drum, the other end of the second pull rope is fixedly connected to the lower end of the scraping frame, and a stirring rod is fixedly installed on the lower end of the winding drum.

[0015] The beneficial effects of the extrusion equipment for cable sheath processing of the present invention are as follows: the present invention can separate the lower end of the limit plate from the card slot on the cover plate, and when the cover plate loses the downward pressure, the return spring drives the cover plate to slide upward along the direction of the fixed rod by virtue of the spring resilience, thereby causing the lower end of the cover plate to move to the edge of the strip groove, thereby facilitating the negative pressure to suck the plastic particles into the recovery bin, thereby realizing rapid suction and discharge of the plastic particles in the bin, and improving the replacement efficiency of the plastic particles.

[0016] In the process of the limit plate moving upward, the scraper frame can be driven to move along with it, so that the scraper frame moves upward along the inner wall of the silo, so that the scraper frame can scrape off some plastic particles adhering to the silo wall due to the electrostatic characteristics, and then the upper edge of the scraper frame is inclined to prevent the plastic particles from staying on the upper end of the scraper frame, so that the scraped plastic particles can fall to the bottom of the silo, thereby improving the suction and discharge effect of the plastic particles and avoiding the residual plastic particles.

[0017] The second pull rope can also be pulled out from the wound winding drum during the upward movement of the scraper frame, which will drive the rotating rod and the stirring rod at both ends of the winding drum to rotate. The rotating rod will tighten the clockwork spring, and the stirring rod will stir the plastic particles at the suction point of the recovery bin, so as to promote a more even distribution of the plastic particles near the recovery bin inlet, avoid local accumulation and close fit between particles, and solve the problem of electrostatic adsorption between plastic particles, which causes the plastic particles to easily form clumps, thereby causing accumulation and blockage in the recovery bin inlet.

[0018] During the resetting process of the limit plate, the scraper frame moves downward by virtue of its own weight and the traction of the second pull rope, so that the scraper frame continues to scrape. At the same time, due to the resilience of the clockwork spring, the clockwork spring drives the rotating rod to rotate, and the rotating rod drives the winding drum to rotate, so that the winding drum reels the second pull rope, and drives the stirring rod to continue stirring again, so that the suction auxiliary effect of the plastic particles can be completed in a back and forth stroke of the scraper frame, thereby improving the material switching efficiency of the extrusion device silo, and ensuring that the blades of the stirring rod are parallel to the stirring frame, so that the stirring rod is convenient to fold up by its own weight, and also avoids the stirring rod affecting the feeding and conveying of the silo, and the stirring rod with a herringbone distribution can ensure the stirring effect on the plastic particles to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1It is an overall schematic diagram of the extrusion equipment used for cable sheath processing.

[0021] Figure 2 It is a schematic diagram of the main structure of the extrusion equipment used for cable sheath processing.

[0022] Figure 3 Schematic diagram of the internal structure of the extrusion equipment used for cable sheath processing.

[0023] Figure 4 The figure is a schematic diagram of the structure of the drive assembly and the capping assembly of the extrusion equipment used for cable sheath processing.

[0024] Figure 5 A schematic diagram of the structure of a capping assembly of an extrusion device used for cable sheath processing.

[0025] Figure 6 Schematic diagram of the drive assembly structure of the extrusion equipment used for cable sheath processing.

[0026] Figure 7 This is a schematic diagram of the structure of the stirring component of the extrusion equipment used for cable sheath processing in the folded state.

[0027] Figure 8 This is a schematic diagram of the stirring state structure of the stirring component of the extrusion equipment used for cable sheath processing.

[0028] Fig. 9 This is a schematic diagram of the cross-sectional structure of the recovery bin of the extrusion equipment used for cable sheath processing.

[0029] Fig.10 This is a schematic diagram of the internal structure of the shell of the extrusion equipment used for cable sheath processing.

[0030] Label: 100, negative pressure suction mechanism; 101, barrel; 102, head; 103, heating chamber; 104, screw; 105, drive motor; 106, silo; 107, valve; 108, recovery bin; 109, bin door; 110, negative pressure pipe; 111, filter screen; 112, strip groove; 113, servo motor; 114, screw; 115, limit plate; 116, screw sleeve; 117, slider; 118, slider slot; 119, cover plate; 120, fixed rod; 121, return spring; 122, slot; 200, suction auxiliary mechanism; 201, support frame; 202, scraper frame; 203, fixed block; 204, first pull rope; 205, stirring frame; 206, rotating slot; 207, straight rod; 208, shell; 209, clockwork spring; 210, rotating rod; 211, winding drum; 212, stirring rod; 213, second pull rope. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0034] Example 1, reference Figures 1 to 4 , which is the first embodiment of the present invention, provides an extrusion device for cable sheath processing, which can realize rapid suction and discharge of plastic particles in the silo 106, improve the replacement efficiency of plastic particles, and can realize the opening of the door 109 of the recovery bin 108, so as to facilitate the discharge of plastic particles into the recovery bin 108 for temporary storage, including a negative pressure suction mechanism 100, which includes the silo 106, and also includes the recovery bin 108 arranged at the bottom of one side of the silo 106, and a suction component arranged inside the recovery bin 108, and a suction component arranged between the silo 106 and the recovery bin 108. A sealing assembly for sealing the plastic particles, and a driving assembly arranged above the recovery bin 108 for driving the sealing assembly, a suction assist mechanism 200 is also arranged inside the silo 106, the suction assist mechanism 200 includes a first pull rope 204, and also includes a scraping assembly connected to one end of the first pull rope 204 for scraping off the plastic particles electrostatically adsorbed on the inner wall of the silo 106, and a stirring assembly arranged below the scraping assembly for stirring the plastic particles, and a second pull rope 213 arranged between the scraping assembly and the stirring assembly for driving.

[0035] In this embodiment, before suction, the sealing component is first opened by the driving component, thereby separating the sealing component from the recovery bin 108 and the silo 106, thereby facilitating the suction of the plastic particles into the recovery bin 108, and then the remaining plastic particles in the silo 106 are sucked into the recovery bin 108 by the negative pressure airflow generated by the suction component. At the same time, during the movement of the sealing component, the sealing component will pull the first pull rope 204, and the first pull rope 204 will drive the scraping component to follow the movement, and then the scraping component will be linked to scrape the plastic particles on the inner wall of the silo 106 due to electrostatic adsorption, thereby ensuring the discharge effect of the plastic particles inside the silo 106 and avoiding the residue of plastic particles. In the process of the scraping component moving upward, the scraping component drives the stirring member on the stirring component through the second pull rope 213, thereby stirring the plastic particles in the lower part of the inner cavity of the silo 106, reducing the formation of agglomerates of plastic particles, and then causing the discharge port to accumulate and block, thereby facilitating the replacement of materials for the extrusion equipment.

[0036] Specifically, the suction component includes a filter screen 111 arranged at the lower end of the inner cavity of the recovery bin 108, and the filter screen 111 is arranged at an inclined angle to the inner cavity of the recovery bin 108, a bin door 109 is arranged at the lower end of the recovery bin 108, the end of the recovery bin 108 is connected to a negative pressure pipe 110, the side of the recovery bin 108 close to the material bin 106 is connected to the lower side of the material bin 106, and the side of the recovery bin 108 close to the material bin 106 is provided with a strip groove 112.

[0037] In this embodiment, the filter screen 111 is detachably installed at the lower end of the inner cavity of the recovery bin 108, and the bin door 109 is rotatably connected to the lower end of the recovery bin 108 by a hinge. During suction, the negative pressure pipe 110 is first connected to the output end of the high-power negative pressure pump, and the negative pressure is generated by the negative pressure pipe 110 to draw the remaining plastic particles in the silo 106 into the recovery bin 108 for temporary storage, thereby achieving rapid suction and discharge of the plastic particles in the silo 106, improving the replacement efficiency of the plastic particles, and the inclined filter screen 111 can reduce the accumulation of plastic particles, thereby ensuring the suction effect of negative pressure, and the temporarily stored plastic particles can be taken out through the bin door 109.

[0038] Furthermore, the cover assembly includes a cover plate 119 disposed above the strip groove 112, and fixing rods 120 are disposed on both sides of the cover plate 119. The cover plate 119 is slidably connected to the fixing rod 120, and a return spring 121 is sleeved on the outer wall of the fixing rod 120. A card slot 122 is opened at the upper end of the cover plate 119. The size of the cover plate 119 is adapted to the size of the strip groove 112, and the cover plate 119 is movably connected to the strip groove 112, and the width of the cover plate 119 is the same as the opening width of the recovery bin 108. The driving assembly includes a device A servo motor 113 is placed above the recovery bin 108, and a screw rod 114 is installed at the output end of the servo motor 113. A limit plate 115 is arranged above the cover plate 119. The side of the limit plate 115 close to the silo 106 is movably connected to the card slot 122, and a screw rod sleeve 116 is fixedly installed on the side of the limit plate 115 away from the silo 106. The size of the screw rod 114 is matched with the size of the screw rod sleeve 116, and the screw rod 114 is threadedly connected to the screw rod sleeve 116, and a slider 117 is fixedly installed on the end of the limit plate 115 away from the silo 106.

[0039] In this embodiment, the fixing rod 120 is connected to the upper end of the recovery bin 108 by welding. Before suction, the servo motor 113 drives the screw rod 114 to rotate forward, and the screw rod 114 cooperates with the screw rod sleeve 116 to drive the limit plate 115 to move upward, so that the lower end of the limit plate 115 is separated from the slot 122 on the cover plate 119. When the cover plate 119 loses the downward pressure, the return spring 121 drives the cover plate 119 to slide upward along the direction of the fixing rod 120 by virtue of the spring resilience, so that the lower end of the cover plate 119 moves to the edge of the strip groove 112, thereby facilitating the negative pressure to suck the plastic particles into the recovery bin. 108, and the covering plate 119 can block the channel between the silo 106 and the recovery silo 108 when the extrusion equipment is running, thereby preventing the plastic particles from being discharged into the recovery silo 108 when the silo 106 feeds the barrel 101. At the same time, the covering plate 119 cooperates with the strip groove 112 to ensure a seamless connection between the covering plate 119 and the recovery silo 108 and the silo 106, thereby reducing the scattering and flying of plastic particles. Moreover, since the width of the covering plate 119 is the same as the opening width of the recovery silo 108, it is ensured that the covering plate 119 can completely block the opening of the recovery silo 108.

[0040] Preferably, a barrel 101 is arranged below the silo 106, a valve 107 is arranged at the lower end of the silo 106, the lower end of the valve 107 is communicated with the upper feed port of the barrel 101, a drive motor 105 is arranged on the side of the barrel 101 close to the recovery bin 108, a screw 104 is installed on the output end of the drive motor 105, a heating chamber 103 is arranged in the middle of the inner cavity of the barrel 101, the size of the screw 104 is adapted to the inner cavity size of the heating chamber 103, a head 102 is arranged on the side of the barrel 101 away from the recovery bin 108, and the head 102 is communicated with the heating chamber 103.

[0041] In this embodiment, the plastic particles are discharged into the barrel 101 through the silo 106, and then the screw 104 is driven to rotate by the driving motor 105, so that the screw 104 rotates in the heated barrel 101, the plastic particles are squeezed forward, and plasticized into a molten state in cooperation with the heating chamber 103, and then the molten plastic particles are extruded into a continuous cable sheath through the head 102, thereby realizing the extrusion processing of the cable sheath. At the same time, the valve 107 arranged between the silo 106 and the barrel 101 can close the channel between the silo 106 and the barrel 101 when it is necessary to stop the machine or switch the material, so as to cut off the material from flowing into the barrel 101.

[0042] During use, when it is necessary to switch materials, first control valve 107 to close the channel between silo 106 and barrel 101, cut off the flow of materials into barrel 101, and then drive screw 114 to rotate forward through servo motor 113, screw 114 cooperates with screw sleeve 116 to drive limit plate 115 to move upward, so that the lower end of limit plate 115 is separated from the slot 122 on cover plate 119, and when cover plate 119 loses downward pressure, return spring 121 drives cover plate 119 to slide upward along the direction of fixed rod 120 by virtue of spring resilience, so that the lower end of cover plate 119 moves to the edge of strip groove 112, so as to facilitate negative pressure to suck plastic particles into recovery bin 108, and then connect negative pressure pipe 110 to the output end of high-power negative pressure pump, and negative pressure is generated through negative pressure pipe 110 to suck the materials into recovery bin 108. The remaining plastic particles in the bin 106 are pumped into the recovery bin 108 for temporary storage, thereby realizing rapid suction and discharge of the plastic particles in the bin 106, improving the replacement efficiency of the plastic particles, and the inclined filter screen 111 can reduce the accumulation of plastic particles, thereby ensuring the suction effect of negative pressure, and finally taking out the temporarily stored plastic particles through the bin door 109. After the material replacement is completed, the valve 107 is opened again, and the plastic particles are discharged into the barrel 101 through the bin 106, and then the screw 104 is driven by the driving motor 105 to rotate, so that the screw 104 rotates in the heated barrel 101, squeezing the plastic particles forward, and cooperating with the heating chamber 103 to plasticize them into a molten state, and then the molten plastic particles are extruded into a continuous cable sheath through the head 102, thereby realizing the extrusion processing of the cable sheath.

[0043] Example 2, reference Figures 1 to 10 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides an extrusion device for processing the cable sheath, which solves the problem that some plastic particles may adhere to the wall of the silo 106 due to static electricity and other characteristics during the suction process, thereby affecting the suction and discharge effect of the plastic particles, thereby causing the plastic particles to remain. In addition, due to the electrostatic adsorption force between the plastic particles, the plastic particles are very likely to form clumps, which in turn causes the problem of accumulation and blockage at the inlet of the recovery bin 108. The scraping assembly includes a scraping frame 202 arranged in the inner cavity of the silo 106, the edge of the scraping frame 202 is in contact with the inner wall of the silo 106, and the scraping frame 202 is movably connected to the inner cavity of the silo 106. The scraping frame 20 2 is arranged at an inclination, and fixed blocks 203 are fixedly installed on the inner sides of the front and rear ends of the scraping frame 202, and the upper ends of the fixed blocks 203 are fixedly connected to the first pull rope 204, and the first pull rope 204 is provided in two. A support frame 201 is welded on one side of the barrel 101, and the inner side of the lower end of the support frame 201 is detachably connected to the servo motor 113. A slide groove 118 is provided on the side of the support frame 201 close to the limit plate 115, and the size of the slider 117 is adapted to the size of the slide groove 118, and the slider 117 is slidably connected to the slide groove 118. A plurality of guide wheels are distributed on the front and rear sides of the support frame 201, and the other end of the first pull rope 204 is fixedly connected to the lower end of the limit plate 115 by bypassing the guide wheel.

[0044] In this embodiment, during the upward movement of the limit plate 115, the first pull rope 204 connected to the limit plate 115 will follow the movement. When the limit plate 115 is completely separated from the slot 122, the first pull rope 204 will pull the fixed block 203 on the scraper frame 202, thereby driving the scraper frame 202 to follow the movement, so that the scraper frame 202 moves upward along the inner wall of the silo 106, so that the scraper frame 202 scrapes off some plastic particles that adhere to the wall of the silo 106 due to the electrostatic characteristics, and then the upper edge of the scraper frame 202 is inclined to prevent the plastic particles from staying at the upper end of the scraper frame 202. The scraped plastic particles can fall to the bottom of the silo 106, thereby improving the suction and discharge effect of the plastic particles and avoiding the situation where plastic particles remain. At the same time, the slider 117 cooperates with the slide groove 118 to ensure the stability of the up and down movement of the limit plate 115, and then the first pull rope 204 can be linked to be pulled. Through the setting of the two first pull ropes 204, the uniformity of the force on the scraping frame 202 can be guaranteed, and the scraping frame 202 can be guaranteed to move upward stably. At the same time, with the setting of multiple guide wheels, the direction of the first pull rope 204 can be changed through the guide wheel, thereby achieving the effect of synchronous drive.

[0045] Specifically, the stirring assembly includes a stirring frame 205 arranged below the scraping frame 202. The size of the stirring frame 205 is the same as that of the scraping frame 202. The stirring frame 205 is fixedly connected to the inner wall of the silo 106. A plurality of rotating grooves 206 are provided on the inner side of the stirring frame 205. The rotating grooves 206 are arranged in three numbers, and the three rotating grooves 206 are distributed in a herringbone shape. A straight rod 207 is rotatably installed in the inner cavity of the rotating groove 206. A shell 208 is fixedly installed at the lower end of the straight rod 207. The inner cavity of the shell 208 is provided with a A clockwork spring 209 is provided, and a rotating rod 210 is provided through the middle of the inner cavity of the shell 208. One end of the clockwork spring 209 is fixedly connected to the rotating rod 210, and the other end of the clockwork spring 209 is fixedly connected to the inner cavity of the shell 208. A winding drum 211 is fixedly installed on the lower end of the rotating rod 210, and a second pull rope 213 is wound around the outer wall of the winding drum 211. The other end of the second pull rope 213 is fixedly connected to the lower end of the scraping frame 202, and a stirring rod 212 is fixedly installed on the lower end of the winding drum 211.

[0046] In this embodiment, during the upward movement of the scraping frame 202, the scraping frame 202 will pull the winding drum 211 through the second pull rope 213. The elastic force of the clockwork spring 209 is greater than the dead weight of the stirring rod 212, so that the second pull rope 213 first drives the straight rod 207 to rotate along the rotating groove 206 until the stirring rod 212 rotates to a horizontal state. At this time, the straight rod 207 contacts the limit block in the rotating groove 206 and no longer rotates. At the same time, the scraping frame 202 that continues to move upward continues to pull the second pull rope 213. 3. At this time, the second pull rope 213 is pulled out from the wound winding drum 211, and at the same time, the rotating rod 210 and the stirring rod 212 at both ends of the winding drum 211 are driven to rotate. The rotating rod 210 tightens the spring 209, and the stirring rod 212 stirs the plastic particles at the suction position of the recovery bin 108, so that the plastic particles near the inlet of the recovery bin 108 are distributed more evenly, avoiding local accumulation and close fit between particles, and solving the electrostatic adsorption force between plastic particles, which causes the plastic particles to easily form clumps, thereby causing In case of accumulation and blockage at the inlet of the recycling bin 108, after the scraper frame 202 moves to the upper edge of the bin 106, the limit plate 115 is controlled to move downward and reset. At this time, the scraper frame 202 moves downward by its own weight and the traction of the second pull rope 213, so that the scraper frame 202 continues to scrape. At the same time, due to the resilience of the clockwork spring 209, the clockwork spring 209 drives the rotating rod 210 to rotate, and the rotating rod 210 drives the winding drum 211 to rotate, so that the winding drum 211 reels the second pull rope 213, and the second pull rope 213 is reeled in again. The stirring rod 212 continues to stir, so that the suction auxiliary effect of the plastic particles can be completed in one back and forth stroke of the scraper frame 202, thereby improving the material switching efficiency of the extruder silo 106. After the stirring rod 212 is reset, it is ensured that the blades of the stirring rod 212 will be parallel to the stirring frame 205, thereby facilitating the stirring rod 212 to fold up by its own weight, and also avoiding the stirring rod 212 affecting the feeding and conveying of the silo 106. Moreover, the stirring rod 212 distributed in a herringbone shape can ensure the stirring effect on the plastic particles to the greatest extent.

[0047] The rest of the structure is the same as that of Example 1.

[0048] When in use, during the upward movement of the limit plate 115, the first pull rope 204 connected to the limit plate 115 will follow the movement. When the limit plate 115 is completely separated from the slot 122, the first pull rope 204 will pull the fixed block 203 on the scraper frame 202, thereby driving the scraper frame 202 to follow the movement, so that the scraper frame 202 moves upward along the inner wall of the silo 106, so that the scraper frame 202 scrapes off some plastic particles that adhere to the wall of the silo 106 due to the electrostatic characteristics, and then the upper edge of the scraper frame 202 is inclined to prevent the plastic particles from staying at the upper end of the scraper frame 202, so that the scraped plastic particles The plastic particles can fall to the bottom of the silo 106, thereby improving the suction and discharge effect of the plastic particles and avoiding the situation where the plastic particles remain. At the same time, when the scraper frame 202 moves upward, the scraper frame 202 will pull the winding drum 211 through the second pull rope 213. The elastic force of the spring spring 209 is greater than the dead weight of the stirring rod 212, so that the second pull rope 213 first drives the straight rod 207 to rotate along the rotating groove 206 until the stirring rod 212 rotates to a horizontal state. At this time, the straight rod 207 contacts the limit block in the rotating groove 206 and no longer rotates. At the same time, the scraper frame 202 that continues to move upward continues to pull The second pull rope 213 is drawn, and at this time, the second pull rope 213 is pulled out from the wound winding drum 211, and at the same time, the rotating rod 210 and the stirring rod 212 at both ends of the winding drum 211 are driven to rotate, and the rotating rod 210 tightens the spring 209, and the stirring rod 212 stirs the plastic particles at the suction point of the recovery bin 108, so that the plastic particles near the inlet of the recovery bin 108 are distributed more evenly, avoiding local accumulation and close fit between particles, and solving the electrostatic adsorption force between plastic particles, which causes the plastic particles to easily form clumps, thereby causing the inlet of the recovery bin 108 to accumulate and block. 06, the limit plate 115 is controlled to move downward and reset. At this time, the scraper frame 202 moves downward by virtue of its own weight and the traction of the second pull rope 213, so that the scraper frame 202 continues to scrape. At the same time, due to the resilience of the clockwork spring 209, the clockwork spring 209 drives the rotating rod 210 to rotate, and the rotating rod 210 drives the winding drum 211 to rotate, so that the winding drum 211 reels the second pull rope 213, and drives the stirring rod 212 to continue stirring again, so that the suction auxiliary effect of the plastic particles can be completed in a back and forth stroke of the scraper frame 202, thereby improving the material switching efficiency of the extruder silo 106.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An extrusion device for cable sheath processing, characterized in that: include, A negative pressure suction mechanism (100), comprising a material bin (106), a recovery bin (108) arranged below one side of the material bin (106), a suction assembly arranged inside the recovery bin (108), a capping assembly arranged between the material bin (106) and the recovery bin (108) for sealing plastic particles, and a driving assembly arranged above the recovery bin (108) for driving the capping assembly, wherein a suction auxiliary mechanism (200) is also arranged inside the material bin (106); The suction auxiliary mechanism (200) comprises a first pull rope (204), a scraping assembly connected to one end of the first pull rope (204) for scraping off plastic particles electrostatically adsorbed on the inner wall of the silo (106), a stirring assembly arranged below the scraping assembly for stirring the plastic particles, and a second pull rope (213) arranged between the scraping assembly and the stirring assembly for driving; The suction assembly comprises a filter screen (111) arranged at the lower end of the inner cavity of the recovery bin (108), and the filter screen (111) is arranged at an inclined angle with the inner cavity of the recovery bin (108); a bin door (109) is arranged at the lower end of the recovery bin (108); a negative pressure pipe (110) is connected to the end of the recovery bin (108); a side of the recovery bin (108) close to the material bin (106) is connected to a lower side of the material bin (106); and a strip groove (112) is arranged on the side of the recovery bin (108) close to the material bin (106); The cover assembly comprises a cover plate (119) arranged above the strip groove (112), fixing rods (120) are arranged on both sides of the cover plate (119), the cover plate (119) is slidably connected to the fixing rods (120), the outer wall of the fixing rod (120) is sleeved with a return spring (121), the upper end of the cover plate (119) is provided with a slot (122), the size of the cover plate (119) is adapted to the size of the strip groove (112), the cover plate (119) is movably connected to the strip groove (112), and the width of the cover plate (119) is the same as the opening width of the recovery bin (108); The driving assembly comprises a servo motor (113) arranged above the recovery bin (108); a screw rod (114) is installed at the output end of the servo motor (113); a limit plate (115) is arranged above the cover plate (119); a side of the limit plate (115) close to the bin (106) is movably connected to the slot (122); a screw rod sleeve (116) is fixedly installed on a side of the limit plate (115) away from the bin (106); the size of the screw rod (114) matches the size of the screw rod sleeve (116); the screw rod (114) and the screw rod sleeve (116) are threadedly connected; and a slider (117) is fixedly installed on one end of the limit plate (115) away from the bin (106); A barrel (101) is arranged below the material bin (106), a valve (107) is arranged at the lower end of the material bin (106), the lower end of the valve (107) is communicated with the upper feed port of the barrel (101), a driving motor (105) is arranged on the side of the barrel (101) close to the recovery bin (108), a screw (104) is installed on the output end of the driving motor (105), a heating chamber (103) is arranged in the middle of the inner cavity of the barrel (101), the size of the screw (104) is adapted to the inner cavity size of the heating chamber (103), a machine head (102) is arranged on the side of the barrel (101) away from the recovery bin (108), and the machine head (102) is communicated with the heating chamber (103); The scraping assembly comprises a scraping frame (202) arranged in the inner cavity of the material bin (106); the edge of the scraping frame (202) is in contact with the inner wall of the material bin (106); the scraping frame (202) is movably connected to the inner cavity of the material bin (106); the upper edge of the scraping frame (202) is arranged in an inclined manner; fixed blocks (203) are fixedly installed on the inner sides of both the front and rear ends of the scraping frame (202); the upper end of the fixed block (203) is fixedly connected to a first pull rope (204); and the number of the first pull ropes (204) is two; A support frame (201) is welded to one side of the barrel (101), the inner side of the lower end of the support frame (201) is detachably connected to the servo motor (113), a slide groove (118) is provided on the side of the support frame (201) close to the limit plate (115), the size of the slider (117) is matched with the size of the slide groove (118), and the slider (117) is slidably connected to the slide groove (118), a plurality of guide wheels are distributed on the front and rear sides of the support frame (201), and the other end of the first pull rope (204) passes around the guide wheel and is fixedly connected to the lower end of the limit plate (115); The stirring assembly comprises a stirring frame (205) arranged below the scraping frame (202); the size of the stirring frame (205) is the same as that of the scraping frame (202); the stirring frame (205) is fixedly connected to the inner wall of the silo (106); a plurality of rotating grooves (206) are provided on the inner side of the stirring frame (205); the number of the rotating grooves (206) is three, and the three rotating grooves (206) are distributed in a herringbone shape; a straight rod (207) is rotatably mounted in the inner cavity of the rotating groove (206); a shell (208) is fixedly mounted at the lower end of the straight rod (207); and a spring (209) is provided in the inner cavity of the shell (208); A rotating rod (210) is provided through the middle of the inner cavity of the shell (208); one end of the clockwork spring (209) is fixedly connected to the rotating rod (210); the other end of the clockwork spring (209) is fixedly connected to the inner cavity of the shell (208); a winding drum (211) is fixedly installed at the lower end of the rotating rod (210); a second pull rope (213) is wound around the outer wall of the winding drum (211); the other end of the second pull rope (213) is fixedly connected to the lower end of the scraping frame (202); and a stirring rod (212) is fixedly installed at the lower end of the winding drum (211).

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