Preheating device of plastic extruder for cable production

Abstract

The invention discloses a preheating device of a plastic extruder for cable production. The preheating device comprises a support, a mounting frame is fixed to the top of the support, a processing box is fixedly mounted on the support, a smashing mechanism is mounted on the processing box, a preheating mechanism is mounted below the mounting frame, and the plastic extruder is mounted below the support. The crushing mechanism comprises two symmetrically-arranged first guide rods, limiting lugs allowing the first guide rods to penetrate through are fixed to the outer wall of the processing box, the same first mounting plate and second mounting plate are fixed to the two ends of the two first guide rods correspondingly, and a driving motor is fixed to the top of the mounting frame; an output shaft of the driving motor penetrates through a hole in the mounting frame and is fixedly provided with an oval disc. The efficient crushing and preheating device realizes effective crushing and preheating effects, can be better heated after being crushed, is more uniform in preheating under the action of stirring, and is beneficial to entering a plastic extruder for production.

Description

Technical Field

[0001] The invention relates to the technical field of cable production equipment, in particular to a preheating device of a plastic extruder used for cable production. Background Art

[0002] As we all know, plastic extruder is a common plastic mechanical equipment. The extrusion method of plastic extruder generally refers to melting plastic at high temperature, and the molten plastic is formed into the required shape when passing through the mold. It has been widely used in the field of cable production. At present, plastic extruder lacks reasonable preheating of raw materials. Preheating can make the plastic reach a suitable working temperature before entering the extruder, ensuring the smoothness and stability of the extrusion process, thereby reducing the probability of product defects and improving product quality.

[0003] After searching, the utility model patent with Chinese patent application number CN202122096202.9 discloses a cable processing plastic extruder with a preheating function, which includes a pad foot and a nut plate, a bottom plate is arranged above the pad foot, the nut plate is arranged above the bottom plate, and an insulation block is attached to the top of the nut plate, and a lifting rod is arranged above the insulation block, and an electrical connection box is arranged above the lifting rod, and a heating wire tube is arranged at the inner bottom of the electrical connection box, and a preheating cylinder is arranged above the heating wire tube, and a flange seat is arranged at the top of the electrical connection box; by providing a driving cylinder, when the raw material is heated and melted in the preheating cylinder, the connected first output pipe can drive the melted raw material to flow when the driving cylinder is connected, and the power source is that the components in the driving cylinder receive the force generated by the interaction between the rotating shaft and the motor, thereby driving the raw material into the second output pipe to be cooled down first, thereby improving the operating efficiency of the equipment.

[0004] However, in the above-mentioned prior art solution, when the preheating cylinder is preheated, the preheating cylinder is preheated by a heating wire tube arranged under the preheating cylinder, and this method easily leads to uneven heating of the preheating cylinder, so that the raw materials located at the lower side of the preheating cylinder have already melted. At the same time, the raw material particles for cable production are mostly round or have a certain shape. In the preheating cylinder, due to its own structural structure, it takes a long time to preheat and it is difficult to heat evenly, which may affect the subsequent work of the plastic extruder, and ultimately lead to lower quality and poor practicality of the cable. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a preheating device for a plastic extruder used in cable production.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A preheating device for a plastic extruder for cable production, comprising a bracket, a mounting frame fixed on the top of the bracket, a processing box fixedly mounted on the bracket, a crushing mechanism mounted on the processing box, a preheating mechanism mounted below the mounting frame, and a plastic extruder mounted below the bracket; The pulverizing mechanism comprises two symmetrically arranged first guide rods, a limiting ear for the first guide rod to pass through is fixed on the outer wall of the processing box, the two ends of the two first guide rods are respectively fixed with the same first mounting plate and the second mounting plate, a driving motor is fixed on the top of the mounting frame, the output shaft of the driving motor passes through the hole on the mounting frame and is fixed with an elliptical disk, a first extrusion piece is installed between the two first guide rods at a position close to the elliptical disk, a second extrusion piece is installed between the two first guide rods at a position away from the elliptical disk, the first extrusion piece and the second extrusion piece are both installed with extrusion plates, and the two extrusion plates are located in the processing box, and a stirring rod located in the preheating mechanism is coaxially fixed to the bottom of the elliptical disk; A sieve plate is fixed to the inner wall of the processing box, and a cleaning mechanism for clearing the sieve plate is installed in the processing box.

[0007] As a further scheme of the present invention, the first extrusion piece includes two third guide rods, the outer wall of the processing box is provided with a hole for the third guide rod to pass through, and the two third guide rods are fixed to the same third mounting plate at positions near the elliptical disk, and the outer wall of the third mounting plate is fixed with a first spring sleeved on the outer wall of the third guide rod, and the second extrusion piece includes two second guide rods fixed to the outer wall of the second mounting plate, and the outer wall of the second mounting plate is fixed with a second spring sleeved on the outer wall of the second guide rod, one of the extrusion plates is fixed to the two third guide rods, and the other extrusion plate is fixed to the two second guide rods under the rotation of the elliptical disk, so that the first mounting plate and the third mounting plate in contact with it are pushed away at the same time, and when the first mounting plate and the third mounting plate are away from each other, the two extrusion plates are arranged close to each other to achieve an extrusion effect, and when the elliptical disk deflects and does not squeeze the first mounting plate and the third mounting plate in contact with it, under the action of the first spring and the second spring, the two extrusion plates move away from each other, thereby achieving repeated pressing.

[0008] As a further solution of the present invention, side plates are fixed to both ends of the top of the processing box, and the upper part of the extrusion plate is an inclined expansion structure, and the upper part is expanded to facilitate the delivery of raw materials.

[0009] As a further solution of the present invention, a mounting cavity is provided in the middle of the first mounting plate and the third mounting plate, and a roller in contact with the elliptical disk is rotatably provided in the mounting cavity. The design of the roller can reduce friction resistance.

[0010] As a further scheme of the present invention, the preheating mechanism includes a heating box fixed on the inner wall of the bracket, a heating tube is installed inside the heating box, a barrel body is fixedly sleeved on the inner wall of the heating box, the stirring rod is located in the barrel body, a solenoid valve is fixed at the bottom of the barrel body, and the bottom of the solenoid valve is fixed to the feed port of the plastic extruder. The preheating mechanism includes a barrel body, a heating tube and a heating box. The crushed cable production particle raw material enters the barrel body, the stirring rod driven by the driving motor is stirred synchronously, and the heating tube generates heat to transfer its heat to the barrel body, combined with mixing, to achieve uniform preheating. Finally, after the preheating set time, the solenoid valve is opened to discharge it into the plastic extruder, to achieve an effective crushing preheating effect, so that it can be better heated after crushing, and under the action of stirring, the preheating is more uniform, which is conducive to entering the plastic extruder for production.

[0011] As a further solution of the present invention, the heating tube is arranged in a spiral structure wound around the outer wall of the barrel body. The heating tube with a spiral structure can better surround the outer wall of the barrel body for heating.

[0012] As a further solution of the present invention, the bottom of the processing box is fixedly connected to a conveying channel, the outlet of the conveying channel is fixedly connected to the barrel body, a control box is installed on the outer wall of the heating box, and a thermostat is installed in the control box, and the thermostat is electrically connected to the heating tube.

[0013] As a further solution of the present invention, mounting strips are fixed to the bottom of the sides of the two extrusion plates that are away from each other, and cleaning bristles that are in contact with the screen plate are evenly fixed to the bottom of the mounting strips. Impact columns are fixed to the inner wall of the processing box at the position corresponding to each extrusion plate. By utilizing the setting of the impact columns, when the extrusion plates move, they can form a certain impact with the impact columns, so that the raw materials crushed on the outer wall of the impact columns can fall smoothly, preventing adhesion from forming and affecting the crushing effect.

[0014] As a further solution of the present invention, the cleaning mechanism includes a connecting arm fixed to the outer wall of one of the first guide rods, a gear is rotatably set at the bottom of the connecting arm, a rack meshing with the gear is fixed to the outer wall of the processing box, a cleaning roller located inside the processing box is coaxially fixed to the gear, the outer wall of the processing box is provided with a slot for the shaft to pass through, and the cleaning roller is arranged close to the bottom of the sieve plate. The set cleaning mechanism includes the slot, the connecting arm, the gear, the rack and the cleaning roller, the set cleaning roller is close to the bottom of the sieve plate, and the mounting strip and cleaning bristles located on the sieve plate are installed at the bottom of the outer wall of the extrusion plate. When the crushing mechanism is working, the first guide rod in the crushing mechanism drives the connecting arm to move back and forth synchronously, so that the rotating gear moves and rotates under the action of the rack, so that the cleaning roller moves and rotates to clean and dredge the bottom of the sieve plate. At the same time, since the two extrusion plates keep moving back and forth, the mounting strip connected to the extrusion plate moves, and the cleaning bristles contacting the sieve plate clean and dredge the upper surface of the sieve plate, which has a cleaning and dredging effect on the sieve plate, which is beneficial to the falling of the crushed cable production granular raw materials.

[0015] The beneficial effects of the present invention are: The present invention comprises a support, a mounting frame, a plastic extruder, a processing box, a crushing mechanism and a stirring rod located in the preheating mechanism. A sieve plate located at the bottom of an extrusion plate is arranged inside the processing box. A driving motor drives an elliptical disk and the stirring rod to rotate. Under the rotation of the elliptical disk, the cable production granular raw material is poured into the processing box, pressed and crushed by two extrusion plates, and enters the preheating mechanism. The preheating mechanism comprises a barrel body, a heating tube and a heating box. The crushed cable production granular raw material enters the barrel body, the stirring rod driven by the driving motor is stirred synchronously, and the heating tube generates heat to transfer its heat into the barrel body, and the mixing is combined to achieve uniform heating and preheating. Finally, after the preheating setting time, the electromagnetic valve is opened to discharge the material into the plastic extruder, so as to achieve an effective crushing and preheating effect, so that the crushed material can be better heated, and under the action of stirring, the preheating is more uniform, which is conducive to entering the plastic extruder for production.

[0016] The present invention provides a cleaning mechanism including a slot, a connecting arm, a gear, a rack and a cleaning roller. When the crushing mechanism is working, the first guide rod in the crushing mechanism drives the connecting arm to move back and forth synchronously, so that the rotating gear moves and rotates under the action of the rack. Therefore, the cleaning roller moves and rotates to clean and dredge the bottom of the screen plate. At the same time, since the two extrusion plates keep moving back and forth, the mounting strip connected to the extrusion plate moves, and the cleaning bristles contacting the screen plate clean and dredge the upper surface of the screen plate, which has the effect of cleaning and dredging the screen plate, and is beneficial to the falling of the crushed cable production granular raw materials.

[0017] The present invention: impact columns are fixed at the positions of each extrusion plate on the inner wall of the processing box. By setting the impact columns, when the extrusion plate moves, it can form a certain impact with the impact columns, so that the raw materials crushed on the outer wall of the impact columns can fall smoothly, preventing adhesion from forming and affecting the crushing effect.

[0018] The present invention: the middle parts of the first mounting plate and the third mounting plate are both provided with mounting cavities, and rollers contacting the elliptical disk are rotatably arranged in the mounting cavities. The design of the rollers can reduce frictional resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a preheating device for a plastic extruder for cable production proposed by the present invention; Figure 2 This is a schematic diagram of the expanded three-dimensional structure of the preheating mechanism of the preheating device of the plastic extruder for cable production proposed by the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the preheating mechanism of the preheating device of the plastic extruder for cable production proposed by the present invention; Figure 4 This is a partially expanded three-dimensional structural schematic diagram of a preheating device of a plastic extruder for cable production proposed by the present invention; Figure 5 The preheating device of the plastic extruder for cable production proposed by the present invention Figure 4 A schematic diagram of a partially unfolded three-dimensional structure; Figure 6 This is a schematic diagram of a partial three-dimensional structure of a pulverizing mechanism of a preheating device of a plastic extruder for cable production proposed by the present invention; Figure 7 The preheating device of the plastic extruder for cable production proposed by the present invention Figure 4 A in the middle is an enlarged schematic diagram of the three-dimensional structure; Figure 8 This is a schematic cross-sectional three-dimensional structural diagram of a processing box of a preheating device of a plastic extruder for cable production proposed by the present invention.

[0020] In the figure: 1, bracket; 2, mounting frame; 3, plastic extruder; 4, processing box; 5, driving motor; 6, crushing mechanism; 601, elliptical disk; 602, first guide rod; 603, first mounting plate; 605, second mounting plate; 606, second guide rod; 607, extrusion plate; 608, third guide rod; 609, first spring; 610, third mounting plate; 611, roller; 612, second spring; 8, solenoid valve; 9, stirring rod; 10, sieve plate; 11, mounting strip; 12, cleaning bristles; 13, limiting ear; 14, cleaning mechanism; 141, notch; 142, connecting arm; 143, gear; 144, rack; 15, preheating mechanism; 151, barrel; 152, heating pipe; 153, heating box; 16, side plate; 18, impact column; 19, conveying channel; 20, cleaning roller. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] Reference Figure 1-8 , a preheating device for a plastic extruder for cable production, comprising a bracket 1, a mounting frame 2 is fixed on the top of the bracket 1, a processing box 4 is fixedly mounted on the bracket 1, a crushing mechanism 6 is mounted on the processing box 4, a preheating mechanism 15 is installed below the mounting frame 2, and a plastic extruder 3 is installed below the bracket 1; The pulverizing mechanism 6 includes two symmetrically arranged first guide rods 602, the outer wall of the processing box 4 is fixed with a limiting ear 13 for the first guide rods 602 to pass through, the two ends of the two first guide rods 602 are respectively fixed with the same first mounting plate 603 and the second mounting plate 605, the top of the mounting frame 2 is fixed with a driving motor 5, the output shaft of the driving motor 5 passes through the hole on the mounting frame 2 and is fixed with an elliptical disk 601, a first extrusion piece is installed between the two first guide rods 602 at a position close to the elliptical disk 601, a second extrusion piece is installed between the two first guide rods 602 at a position away from the elliptical disk 601, the first extrusion piece and the second extrusion piece are both installed with extrusion plates 607, and the two extrusion plates 607 are located in the processing box 4, and the bottom of the elliptical disk 601 is coaxially fixed with a stirring rod 9 located in the preheating mechanism 15; A sieve plate 10 is fixed to the inner wall of the processing box 4 , and a cleaning mechanism 14 for clearing the sieve plate 10 is installed in the processing box 4 .

[0024] In this embodiment, the first extrusion member includes two third guide rods 608, the outer wall of the processing box 4 is provided with a hole for the third guide rods 608 to pass through, the two third guide rods 608 are fixed with the same third mounting plate 610 near the oval disk 601, the outer wall of the third mounting plate 610 is fixed with a first spring 609 sleeved on the outer wall of the third guide rod 608, the second extrusion member includes two second guide rods 606 fixed to the outer wall of the second mounting plate 605, the outer wall of the second mounting plate 605 is fixed with a second spring 612 sleeved on the outer wall of the second guide rod 606, one of the extrusion plates 607 is connected to the two third guide rods 608, and the second extrusion member includes two second guide rods 606 fixed to the outer wall of the second mounting plate 605, and the second spring 612 sleeved on the outer wall of the second guide rod 606 is fixed to the outer wall of the second mounting plate 605. The first and second guide rods 606 are fixed to the elliptical disk 601, and another extrusion plate 607 is fixed to the two second guide rods 606. When the elliptical disk 601 rotates, the first mounting plate 603 and the third mounting plate 610 in contact with it are pushed away from each other at the same time. When the first mounting plate 603 and the third mounting plate 610 are away from each other, the two extrusion plates 607 are arranged close to each other to achieve an extrusion effect. When the elliptical disk 601 deflects and does not squeeze the first mounting plate 603 and the third mounting plate 610 in contact with it, the two extrusion plates 607 are away from each other under the action of the first spring 609 and the second spring 612, thereby achieving repeated pressing.

[0025] In this embodiment, side plates 16 are fixed to both ends of the top of the processing box 4, and the upper part of the squeezing plate 607 is an inclined unfolding structure, and the upper part is unfolded for the feeding of raw materials.

[0026] In this embodiment, a mounting cavity is provided in the middle of the first mounting plate 603 and the third mounting plate 610, and a roller 611 is rotatably provided in the mounting cavity to contact the elliptical disk 601. The design of the roller 611 can reduce friction resistance.

[0027] In this embodiment, the preheating mechanism 15 includes a heating box 153 fixed to the inner wall of the bracket 1, a heating tube 152 is installed inside the heating box 153, a barrel body 151 is fixedly sleeved on the inner wall of the heating box 153, a stirring rod 9 is located in the barrel body 151, a solenoid valve 8 is fixed to the bottom of the barrel body 151, and the bottom of the solenoid valve 8 is fixed to the feed port of the plastic extruder 3. The crushing mechanism 6 includes an elliptical disk 601, a first guide rod 602, a first mounting plate 603, a second mounting plate 605, a second guide rod 606, an extrusion plate 607, a third guide rod 608, a first spring 609, a third mounting plate 610, a roller 611 and a second spring 612, etc., and a spring 612 is provided at the bottom of the extrusion plate 607 inside the processing box 4. The sieve plate 10, the driving motor 5 is set to drive the elliptical disk 601 and the stirring rod 9 to rotate, and at the same time, under the rotation of the elliptical disk 601, the first mounting plate 603 and the third mounting plate 610 that are released from it are pushed away at the same time, and when the first mounting plate 603 and the third mounting plate 610 are away from each other, the two extrusion plates 607 are arranged to approach each other to achieve an extrusion effect, and when the elliptical disk 601 is deflected and does not squeeze the first mounting plate 603 and the third mounting plate 610 that are in contact with it, under the action of the first spring 609 and the second spring 612, the two extrusion plates 607 are away from each other, thereby achieving repeated pressing, and the cable production granular raw material is dumped into the processing box 4, and is pressed and crushed by the two extrusion plates 607.

[0028] In this embodiment, the heating tube 152 is a spiral structure wound around the outer wall of the barrel body 151. The heating tube 152 with a spiral structure can better surround the outer wall of the barrel body 151 for heating.

[0029] In this embodiment, the bottom of the processing box 4 is fixedly connected to a conveying channel 19, the outlet of the conveying channel 19 is fixedly connected to the barrel body 151, a control box is installed on the outer wall of the heating box 153, and a thermostat is installed in the control box, and the thermostat is electrically connected to the heating tube 152.

[0030] In this embodiment, a mounting strip 11 is fixed to the bottom of the sides of the two extrusion plates 607 that are away from each other, and a cleaning bristle 12 that is in contact with the screen plate 10 is evenly fixed to the bottom of the mounting strip 11. An impact column 18 is fixed to the inner wall of the processing box 4 at the position corresponding to each extrusion plate 607. By utilizing the setting of the impact column 18, when the extrusion plate 607 moves, it can form a certain impact with the impact column 18, so that the raw materials crushed on the outer wall of the impact column 18 can fall smoothly to prevent adhesion from forming, which affects the crushing effect.

[0031] In this embodiment, the cleaning mechanism 14 includes a connecting arm 142 fixed to the outer wall of one of the first guide rods 602, a gear 143 is rotatably provided at the bottom of the connecting arm 142, a rack 144 meshing with the gear 143 is fixed to the outer wall of the processing box 4, a cleaning roller 20 located inside the processing box 4 is coaxially fixed to the gear 143, a slot 141 for the shaft to pass through is provided on the outer wall of the processing box 4, the cleaning roller 20 is arranged close to the bottom of the sieve plate 10, and the cleaning mechanism 14 includes the slot 141, the connecting arm 142, the gear 143, the rack 144 and the cleaning roller 20, the cleaning roller 20 is arranged close to the bottom of the sieve plate 10, and a position is installed at the bottom of the outer wall of the extrusion plate 607. With respect to the mounting strip 11 and the cleaning brush 12 on the sieve plate 10, when the pulverizing mechanism 6 is working, the first guide rod 602 in the pulverizing mechanism 6 drives the connecting arm 142 to move back and forth synchronously, so that the rotating gear 143 moves and rotates under the action of the rack 144, so that the cleaning roller 20 moves and rotates to clean and dredge the bottom of the sieve plate 10. At the same time, since the two extrusion plates 607 keep moving back and forth, the mounting strip 11 connected to the extrusion plate 607 moves, and the cleaning brush 12 contacting the sieve plate 10 cleans and dredges the upper surface of the sieve plate 10, which has the effect of cleaning and dredging the sieve plate 10, and is beneficial to the falling of the crushed cable production granular raw materials.

[0032] Working principle: a bracket 1, a mounting frame 2, a plastic extruder 3, a processing box 4, a crushing mechanism 6 and a stirring rod 9 located in the preheating mechanism 15 are set, wherein the crushing mechanism 6 includes an elliptical disk 601, a first guide rod 602, a first mounting plate 603, a second mounting plate 605, a second guide rod 606, an extrusion plate 607, a third guide rod 608, a first spring 609, a third mounting plate 610, a roller 611 and a second spring 612, etc., a sieve plate 10 located at the bottom of the extrusion plate 607 is set inside the processing box 4, and a driving motor 5 is set to drive the elliptical disk 601 and the stirring rod 9 to rotate, and at the same time, under the rotation of the elliptical disk 601, the first mounting plate 603 and the third mounting plate 610 in contact with it are pushed away at the same time, and when the first mounting plate 603 and the third mounting plate 610 are away from each other, the two extrusion plates 607 are set close to each other to achieve an extrusion effect, and when the elliptical disk 601 deflects, it does not extrude and When the first mounting plate 603 and the third mounting plate 610 are in contact, the two squeezing plates 607 are moved away from each other under the action of the first spring 609 and the second spring 612, thereby achieving repeated pressing, and the cable production granular raw material is poured into the processing box 4, and is pressed and crushed by the two squeezing plates 607, and enters the preheating mechanism 15. The preheating mechanism 15 includes a barrel 151, a heating tube 152 and a heating box 153. The crushed cable production granular raw material enters the barrel 151, and is stirred synchronously by the stirring rod 9 driven by the driving motor 5, and the heating tube 152 generates heat, and transfers its heat to the barrel 151, combined with mixing, to achieve uniform heating preheating. Finally, after the preheating set time, the solenoid valve 8 is opened and discharged into the plastic extruder 3, to achieve an effective crushing preheating effect, so that it can be better heated after crushing, and under the action of stirring, the preheating is more uniform, which is conducive to entering the plastic extruder 3 for production.

[0033] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A preheating device for a plastic extruder for cable production, comprising a support (1), characterized in that: A mounting frame (2) is fixed on the top of the support (1), a processing box (4) is fixedly mounted on the support (1), a crushing mechanism (6) is mounted on the processing box (4), a preheating mechanism (15) is mounted below the mounting frame (2), and a plastic extruder (3) is mounted below the support (1); The pulverizing mechanism (6) comprises two symmetrically arranged first guide rods (602); a limiting ear (13) for the first guide rods (602) to pass through is fixed on the outer wall of the processing box (4); a first mounting plate (603) and a second mounting plate (605) are respectively fixed at both ends of the two first guide rods (602); a driving motor (5) is fixed on the top of the mounting frame (2); an output shaft of the driving motor (5) passes through a hole on the mounting frame (2) and is fixed with an elliptical disk (601); a first extrusion member is installed between the two first guide rods (602) at a position close to the elliptical disk (601); a second extrusion member is installed between the two first guide rods (602) at a position away from the elliptical disk (601); an extrusion plate (607) is installed on both the first extrusion member and the second extrusion member, and the two extrusion plates (607) are located in the processing box (4); and a stirring rod (9) located in the preheating mechanism (15) is coaxially fixed to the bottom of the elliptical disk (601); A sieve plate (10) is fixed to the inner wall of the processing box (4), and a cleaning mechanism (14) for clearing the sieve plate (10) is installed in the processing box (4).

2. The preheating device for a plastic extruder for cable production according to claim 1, characterized in that: The first extrusion member comprises two third guide rods (608); the outer wall of the processing box (4) is provided with a hole for the third guide rods (608) to pass through; the two third guide rods (608) are fixed with a same third mounting plate (610) at positions close to the elliptical disk (601); the outer wall of the third mounting plate (610) is fixed with a first spring (609) sleeved on the outer wall of the third guide rods (608); the second extrusion member comprises two second guide rods (606) fixed to the outer wall of the second mounting plate (605); the outer wall of the second mounting plate (605) is fixed with a second spring (612) sleeved on the outer wall of the second guide rods (606); one of the extrusion plates (607) is fixed to the two third guide rods (608); and the other of the extrusion plates (607) is fixed to the two second guide rods (606).

3. The preheating device for a plastic extruder for cable production according to claim 1, characterized in that: Side plates (16) are fixed to both ends of the top of the processing box (4), and the upper part of the squeezing plate (607) is an inclined unfolding structure.

4. The preheating device for a plastic extruder for cable production according to claim 1, characterized in that: The first mounting plate (603) and the third mounting plate (610) are each provided with a mounting cavity in the middle, and a roller (611) is rotatably arranged in the mounting cavity and contacts the elliptical disk (601).

5. The preheating device for a plastic extruder for cable production according to claim 1, characterized in that: The preheating mechanism (15) comprises a heating box (153) fixed to the inner wall of the bracket (1), a heating tube (152) being installed inside the heating box (153), a barrel (151) being fixedly sleeved on the inner wall of the heating box (153), the stirring rod (9) being located inside the barrel (151), a solenoid valve (8) being fixed at the bottom of the barrel (151), and the bottom of the solenoid valve (8) being fixed to the feed port of the plastic extruder (3).

6. The preheating device for a plastic extruder for cable production according to claim 5, characterized in that: The heating tube (152) is a spiral structure wound around the outer wall of the barrel (151).

7. The preheating device for a plastic extruder for cable production according to claim 6, characterized in that: The bottom of the processing box (4) is fixedly connected to a conveying channel (19), the outlet of the conveying channel (19) is fixedly connected to the barrel body (151), a control box is installed on the outer wall of the heating box (153), and a temperature controller is installed in the control box, and the temperature controller is electrically connected to the heating tube (152).

8. The preheating device for a plastic extruder for cable production according to claim 1, characterized in that: A mounting strip (11) is fixed to the bottom of the sides of the two extrusion plates (607) that are away from each other, and cleaning bristles (12) that are in contact with the screen plate (10) are evenly fixed to the bottom of the mounting strip (11), and an impact column (18) is fixed to the inner wall of the processing box (4) at a position corresponding to each extrusion plate (607).

9. The preheating device for a plastic extruder for cable production according to claim 1, characterized in that: The cleaning mechanism (14) comprises a connecting arm (142) fixed to the outer wall of one of the first guide rods (602); a gear (143) is rotatably provided at the bottom of the connecting arm (142); a rack (144) meshing with the gear (143) is fixed to the outer wall of the processing box (4); a cleaning roller (20) located inside the processing box (4) is coaxially fixed to the gear (143); a notch (141) for the shaft to pass through is provided on the outer wall of the processing box (4); and the cleaning roller (20) is arranged in close contact with the bottom of the screen plate (10).

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