Extrusion device and method for polyvinyl chloride cable material production

Abstract

The invention relates to the technical field of cable manufacturing, in particular to an extrusion device and method for polyvinyl chloride cable material production, and the extrusion device comprises an extruder, a blanking hopper fixedly mounted on the extruder, and a fan connected with the blanking hopper; the discharging hopper comprises a feeding bin and a discharging bin, the partition plate is fixedly mounted on the feeding bin; the discharging assembly is used for controlling discharging of materials in the feeding bin, and the premixing bin is used for premixing the materials; and a blanking bin. According to the cable material blanking device, the sliding rail drives the motor to move to different positions, blanking of different cable materials can be achieved, blanking is conducted through transmission of the gear, the blanking amount of the cable materials can be accurately controlled, and the blanking effect on the cable materials is good.

Description

Technical Field

[0001] The present invention relates to the technical field of cable manufacturing, and in particular to an extrusion device and method for producing polyvinyl chloride cable materials. Background Art

[0002] Wire and cable is a device for transmitting electric energy or signals, usually composed of several or several groups of wires. The cable material is put into the extrusion equipment, and then extruded into shape by the extrusion equipment, and then the wire and cable will be put into use. During the production process of wire and cable, wires and cables of different diameters and shapes will be produced according to needs. The shapes of wires and cables are different, and the extrusion equipment required for external insulation coating will also be different. However, the composition of different cable materials is different, the amount of cable materials fed is also different, and how to ensure the mixing degree of cable materials is also different.

[0003] The patent application with application number CN202410034783.9 discloses a cable material production and preparation device and method thereof, which relates to the field of cable material production technology. The device includes: a main unit, which includes: a base plate, an injection molding device arranged above the base plate; a molding unit, which includes: an upper template and a lower template that are matched with each other, a cooling water tank arranged on the bottom side of the lower template, and a cooling water circulation mechanism arranged between the cooling water tank and the upper template and the lower template, and the injection molding device is connected to the upper template and the lower template through a material diverter plate; a cutting unit, which includes: a slide frame fixed by a connecting bracket, and a magnetic slider slidingly arranged on the inside of the slide frame. This invention speeds up the production by extruding the material while only increasing the flow rate of the cooling water to adjust the cutting speed of the tool, thereby simplifying the adjustment steps, making the connection between production closer, and facilitating the operation of the staff.

[0004] However, the patent does not explain how to make the cable material discharge more uniform.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the Invention

[0006] The object of the present invention is to provide an extrusion device and method for producing polyvinyl chloride cable materials that can effectively solve the above-mentioned technical problems.

[0007] In order to achieve the purpose of the present invention, the following technical solutions are adopted:

[0008] An extrusion device and method for producing polyvinyl chloride cable materials,

[0009] It includes: an extruder, a lower hopper fixedly installed on the extruder, and a fan connected to the lower hopper;

[0010] The discharge hopper includes: a feed bin; a partition fixedly mounted on the feed bin; a discharge assembly for controlling the discharge of materials in the feed bin, a premixing bin for premixing the materials; and a discharge bin;

[0011] The unloading assembly includes: a support frame fixedly mounted on the unloading hopper, a slide rail fixedly mounted on the support frame, a motor slidably mounted on the slide rail, a gear three fixedly mounted on the output shaft of the motor, and a unloading shaft rotatably mounted on the feed bin.

[0012] Furthermore, three groups of the blanking shafts are provided, and two groups of the blanking shafts that are not coaxial with the motor output shaft are respectively fixedly mounted with gear one and gear two.

[0013] Furthermore, a connecting rod is fixedly mounted on the output shaft of the motor, a limiting block is fixedly mounted on one end of the connecting rod, and a limiting groove is provided on the blanking shaft.

[0014] Furthermore, a flat key is fixedly installed on the motor output shaft, a support rod is fixedly installed on the support frame, a transmission wheel is rotatably installed on the support rod, a connecting hole is provided on the transmission wheel, a key slot is provided on the connecting hole, the transmission wheel is connected to a pulley through a belt drive, a transmission shaft is fixedly connected to the pulley, a connecting rod is fixedly connected to the transmission shaft, and a bulk plate is rotatably connected to the connecting rod.

[0015] Furthermore, the bulk plate is a hollow structure, and has multiple groups of air outlets on its surface. The bulk plate is connected to air pipe 1, the lower hopper is connected to a ventilation shell, the fan outlet is connected to air pipe 2, and air pipe 2 is connected to the ventilation shell.

[0016] Furthermore, a discharge box is fixedly mounted on the vent shell, and a discharge part is provided at the connection point between the discharge box and the vent shell. The discharge part consists of a guide rod, a piston fixedly mounted on the guide rod, a connecting sleeve sleeved on the piston, a spring fixedly mounted on the connecting sleeve, a push rod fixedly mounted on the guide rod, a baffle fixedly mounted on the push rod, and a discharge trough opened on the baffle.

[0017] Furthermore, one end of the guide rod is provided with an inclined surface, the air pipe is fixedly mounted on the inclined block, and one end of the spring is connected to the piston.

[0018] Furthermore, a limit pin is fixedly mounted on the piston, a guide groove is provided on the connecting sleeve, and the limit pin cooperates with the guide groove.

[0019] Further, including:

[0020] S1: Weigh 60-70 parts of polyvinyl chloride, 8-16 parts of nitrile rubber, 3-6 parts of silicon dioxide, 0.5-1.5 parts of silane coupling agent KH-560, and 0.3-1.2 parts of microcrystalline paraffin according to weight parts and set aside;

[0021] S2: Add polyvinyl chloride, nitrile rubber and microcrystalline wax into the discharge hopper in sequence, and add silane coupling agent KH-560 and silicon dioxide into the discharge box;

[0022] S3: PVC, nitrile rubber and microcrystalline wax enter the premixing bin under the rotation of the discharge shaft. At the same time, silane coupling agent KH-560 and silicon dioxide are evenly mixed with PVC, nitrile rubber and microcrystalline wax under the action of the bulk plate and the air outlet.

[0023] S4: After mixing is completed, open the butterfly valve to allow the material to enter the discharge bin and feed directly into the extruder.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention discloses an extrusion device and method for producing polyvinyl chloride cable materials. By driving a motor to move to different positions via a slide rail, different cable materials can be discharged. Moreover, by discharging the materials through the transmission of gears, the discharge amount of the cable materials can be accurately controlled, and the discharge effect of the cable materials is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0027] Figure 1 This is a schematic diagram of an extrusion device and method for producing polyvinyl chloride cable materials according to the present invention;

[0028] Figure 2 This is a schematic diagram of a feed bin of an extrusion device and method for producing polyvinyl chloride cable material according to the present invention;

[0029] Figure 3 This is a schematic diagram of a partition for an extrusion device and method for producing polyvinyl chloride cable material according to the present invention;

[0030] Figure 4 This is a schematic diagram of a blanking component of an extrusion device and method for producing polyvinyl chloride cable material according to the present invention;

[0031] Figure 5 This is a schematic diagram of a blanking shaft of an extrusion device and method for producing polyvinyl chloride cable material according to the present invention;

[0032] Figure 6 The present invention is a polyvinyl chloride cable material production extrusion device and method Figure 5 A in the middle is an enlarged schematic diagram;

[0033] Figure 7 This is a schematic diagram of a limit block for an extrusion device and method for producing polyvinyl chloride cable material according to the present invention;

[0034] Figure 8 This is a schematic diagram of a transmission wheel of an extrusion device and method for producing polyvinyl chloride cable material according to the present invention;

[0035] Figure 9 A schematic diagram of a pulley for an extrusion device and method for producing polyvinyl chloride cable material according to the present invention;

[0036] Figure 10 This is a schematic diagram of a bulk plate of an extrusion device and method for producing polyvinyl chloride cable material according to the present invention;

[0037] Figure 11 This is a schematic diagram of a blanking box for an extrusion device and method for producing polyvinyl chloride cable material according to the present invention;

[0038] Figure 12 This is a schematic diagram of the blanking parts of an extrusion device and method for producing polyvinyl chloride cable material according to the present invention;

[0039] Figure 13 This is a schematic diagram of a feed chute of an extrusion device and method for producing polyvinyl chloride cable material according to the present invention;

[0040] Figure 14 This is a schematic diagram of a guide trough of an extrusion device and method for producing polyvinyl chloride cable materials according to the present invention.

[0041] In the figure: 1. Extruder; 2. Feed hopper; 21. Feed bin; 22. Feeding assembly; 221. Support frame; 222. Slide rail; 223. Motor; 2231. Flat key; 22311. Drive wheel; 22312. Connecting hole; 22313. Keyway; 22314. Support rod; 22315. Pulley; 22316. Drive shaft; 2232. Connecting rod; 2233. Bulk plate; 22331. Air outlet; 22332. Air pipe 1; 22333. Oblique block; 224. Connecting rod; 225. Limit block; 23. Spacer Plate; 231, discharge shaft; 232, gear one; 233, gear two; 234, gear three; 2341, limit groove; 24, premixing bin; 25, discharge bin; 26, slide; 27, vent shell; 271, discharge box; 272, discharge parts; 2721, guide rod; 2722, piston; 2723, limit pin; 2724, connecting sleeve; 27241, guide groove; 2725, spring; 2726, push rod; 2727, fixed shaft; 2728, baffle; 2729, discharge chute; 3, fan; 31, air duct two. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0043] In the description of the present invention, it should be understood that the terms "center", "transverse", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0044] like Figures 1 to 14 As shown, the present invention provides an extrusion device for producing polyvinyl chloride cable materials, comprising: an extruder 1, a lower hopper 2 fixedly installed on the extruder 1, and a fan 3 connected to the lower hopper 2; the extruder 1 is the core equipment in cable manufacturing, mainly used to melt and plasticize plastic or rubber material, and then evenly coat it on the surface of a conductor (copper wire, aluminum wire, etc.) through a mold to form an insulating layer or sheath.

[0045] The cable material is discharged into the extruder 1 through the hopper 2, and the fan 3 blows air into the hopper 2 to mix the cable material in the hopper 2. The fan 3 can also be a hot air blower 3 to dry the cable material in the hopper 2 to prevent moisture in the cable material from entering the extruder 1, which would cause the extrusion quality of the cable material to deteriorate.

[0046] Specifically, the discharge hopper 2 includes: a feed bin 21; a partition 23 fixedly mounted on the feed bin 21; a discharge assembly 22 for controlling the discharge of materials in the feed bin 21; a premixing bin 24 for premixing the materials; and a discharge bin 25;

[0047] The discharge hopper 2 is divided into a lower feed bin 21, a premixing bin 24 and a discharge bin 25 from top to bottom. The materials of different components are separated by a partition 23 in the feed bin 21. At the same time, the discharge component 22 can control the material of each component to be discharged into the premixing bin 24 separately, so as to realize precise control of the discharge amount of the cable material, and control the cable material and auxiliary materials to be added and mixed into the premixing bin 24 during the main material discharge process, and discharge them into the lower hopper 25 after the mixing is completed, so as to realize the comprehensive discharge of the cable material, and the discharge amount is controllable, which can ensure the quality of the cable material extrusion.

[0048] It should be noted that the specific structure of the material discharge component 22 controlling the cable material to be discharged into the premixing bin 24 is as follows: the material discharge component 22 includes: a support frame 221 fixedly mounted on the material discharge hopper 2, a slide rail 222 fixedly mounted on the support frame 221, a motor 223 slidably mounted on the slide rail 222, a gear 234 fixedly mounted on the output shaft of the motor 223, and a material discharge shaft 231 rotatably mounted on the material feed bin 21. The material discharge shaft 231 is provided with multiple groups. In this application, three groups of material discharge shafts 231 are provided. Two groups of material discharge shafts 231 that are not on the same axis as the output shaft of the motor 223 are fixedly mounted on the material discharge hopper 2. There are gear one 232 and gear two 233. When the motor 223 drives the gear three 234 to move to different positions through the slide rail 222, the gear three 234 engages with the gear one 232 or the gear two 233 respectively. Each set of discharge shafts 231 controls the discharge of a type of cable material. The slide rail 222 is an electric slide rail 222, which can accurately drive the motor 223 to move, so that the motor 223 drives the gear three 234 to engage with the other two sets of gears, thereby realizing the discharge of the cable material, and the discharge shaft 231 is driven to rotate by the engagement of the gears, which can accurately control the discharge amount of the cable material, so that the extrusion effect of the extruder 1 is better.

[0049] For example, when the slide rail 222 drives the motor 223 to make the gear three 234 engage with the gear one 232, the motor 223 rotates and then rotates the discharge shaft 231 connected to the gear one 232. When the discharge shaft 231 rotates, the cable material enters the premixing bin 24 from the feed bin 21. By setting up multiple groups of discharge shafts 231, accurate discharge of various cable materials can be achieved to ensure the extrusion effect.

[0050] The limit block 225 is driven by the limit rod 224 to move in the direction of the feed shaft 231, and the limit block 225 is driven by the limit rod 224 to move in the direction of the feed shaft 231.

[0051] In general, by driving the motor 223 to move to different positions through the slide rail 222, different cable materials can be unloaded, and the unloading of the cable materials can be accurately controlled by the transmission unloading of the gears, which has a good unloading effect on the cable materials.

[0052] It should be further explained that a flat key 2231 is fixedly mounted on the output shaft of the motor 223, a support rod 22314 is fixedly mounted on the support frame 221, a transmission wheel 22311 is rotatably mounted on the support rod 22314, a connecting hole 22312 is formed in the transmission wheel 22311, a keyway 22313 is formed in the connecting hole 22312, the transmission wheel 22311 is connected to a pulley 22315 via a belt drive, a transmission shaft 22316 is fixedly connected to the pulley 22315, a connecting rod 2232 is fixedly connected to the transmission shaft 22316, a bulk plate 2233 is rotatably connected to the connecting rod 2232, and the support rod 22314 is used to support the transmission wheel 22311 and ensure tension between the transmission wheel 22311, the belt, and the pulley 22315. Of course, in another embodiment of the present application, another set of motors 223 can be provided to directly drive the pulley 22315 to rotate.

[0053] When the motor 223 moves under the action of the slide rail 222, the output shaft of the motor 223 and the flat key 2231 move in the connecting hole 22312 and the keyway 22313 respectively, avoiding driving the transmission wheel 22311 to move, resulting in changes in the tension between the transmission wheel 22311, the belt, and the pulley 22315, affecting the transmission effect. When the output shaft of the motor 223 rotates, the motor 223 drives the pulley 22315 to rotate when it rotates, causing the connecting rod 2232 to rotate, and then drives the bulk plate 2233 to move up and down in the premixing bin 24. The bulk plate 2233 consists of two inclined surfaces and one plane, which can gather the cable material entering the premixing bin 24 to the center and drop it downward, and the cable material collides with the cable material during the up and down movement, which can scatter the agglomerated cable material and improve the mixing effect of the cable material.

[0054] On the one hand, the motor 223 drives the unloading shaft 231 to rotate and unload the cable material. On the other hand, it can also drive the bulk plate 2233 to gather and break up the cable material entering the premixing bin 24 to ensure the unloading effect of the cable material.

[0055] It should also be noted that the bulk plate 2233 is a hollow structure, and multiple groups of air blowing ports 22331 are provided on the surface. The bulk plate 2233 is connected to an air pipe 1 22332, the discharge hopper 2 is connected to a ventilation shell 27, and the air outlet of the fan 3 is connected to an air pipe 2, which is connected to the ventilation shell 27. That is to say, when the cable material is discharged, the fan 3 blows air into the bulk plate 2233 through the air pipe 2, the ventilation shell 27, and the air pipe 1 22332, and discharges it through the air blowing port 22331. On the one hand, the cable material can be gathered and broken up, and on the other hand, the cable material can be stirred with gas. If the gas blown into the bulk plate 2233 is hot air, the cable material can be dried more evenly to achieve a better cable material discharge effect.

[0056] Since the air pipe 22332 is located in the premixing chamber, considering the contact between the air pipe 22332 and the cable material, the air pipe 22332 should be a metal tube. Therefore, a slide groove 26 is provided on the premixing chamber 24 to ensure the connection between the air pipe 22332 and the vent shell 27, and there will be no interference when moving, which has a better use effect.

[0057] It should be noted that the cable material contains not only granular material, but also liquid material and powder material. The discharge amount of liquid material and powder material is small, and it is impossible to discharge the material through the discharge shaft 231. Moreover, it is difficult to achieve a good mixing effect by direct discharge.

[0058] Therefore, a discharge box 271 is fixedly installed on the ventilation shell 27, and a discharge part 272 is provided at the connection between the discharge box 271 and the ventilation shell 27. The discharge part 272 consists of a guide rod 2721, a piston 2722 fixedly installed on the guide rod 2721, a connecting sleeve 2724 sleeved on the piston 2722, a spring 2725 fixedly installed on the connecting sleeve 2724, a push rod 2726 fixedly installed on the guide rod 2721, a baffle 2728 fixedly installed on the push rod 2726, and a discharge trough 2729 provided on the baffle 2728; one end of the guide rod 2721 is provided with a slope, and is fixedly installed on the inclined block 22333 on the air pipe 22332, and one end of the spring 2725 is connected to the piston 2722.

[0059] When the bulk plate 2233 moves to the position of the lower material part 272, it drives the air pipe 22332 to move, so that the inclined block 22333 contacts the inclined surface of the guide rod 2721, pushes the guide rod 2721 to move, and drives the baffle 2728 and the chute 2729 to enter the material box 271 through the push rod 2726 and the fixed shaft 2727. At the same time, the spring 2725 is compressed. After the baffle 2728 and the chute 2729 enter the material box 271, the material in the material box 271 will enter the chute. In 2729, when the bulk plate 2233 moves to the position of another set of unloading parts 272, the inclined block 22333 ends its contact with the guide rod 2721, and the spring 2725 resets to drive the baffle 2728 and the unloading chute 2729 to move out of the unloading box 271. The baffle 2728 blocks the outlet of the unloading box 271, completing the material collection work of the liquid or powder material. Then, under the action of blowing air from the air duct 2 31 into the ventilation shell 27, the powder or liquid material is blown out and mixed with the granular material, and the mixing effect is good.

[0060] It should be noted that a limit pin 2723 is fixedly installed on the piston 2722, and a guide groove 27241 is provided on the connecting sleeve 2724. The limit pin 2723 cooperates with the guide groove 27241. When the push rod 2726 drives the piston 2722 to move, the guide groove 27241 guides the limit pin 2723 to make the piston 2722 rotate in the connecting sleeve 2724, thereby driving the baffle 2728 and the discharge chute 2729 to rotate, so that the discharge chute 2729 rotates to take the material and then rotates out, so that the powder or liquid material falls out under the action of gravity, thereby avoiding the material being stuck in the discharge chute 2729, resulting in uneven discharge, and thus affecting the mixing effect of the cable material.

[0061] The discharge box 271 is provided with two groups, for discharging liquid and powder respectively, and in the present application, the powder box is located below the liquid box. When taking materials from the discharge box 271, the powder is taken first and then the liquid. When the powder is blown out under the action of gas, it will cause dust in the premixing bin 24, and then by spraying the liquid, it has a dust reduction effect. At the same time, it can also avoid the agglomeration of the powder and liquid, which affects the mixing effect of the cable material. The liquid or powder is intermittently taken by the movement of the bulk plate 2233, and mixed with the granular material under the action of the air duct 231, and the mixing effect is better.

[0062] In general, on the one hand, the bulk plate 2233 can break up the granular material when it moves, and at the same time, the granular material is stirred by air under the action of air pipe 1 22332 and air pipe 2 to improve the mixing effect of the cable material. On the other hand, air pipe 1 22332 and air pipe 2 can also spray out powder or liquid material to improve the mixing of powder, liquid and granular material, and through the spatial layout of the powder box and the liquid box, the air outlet 22331 blows out the powder first, and then blows out the liquid, and so on, to achieve the effect of dust reduction in the premixing bin 24, and avoid the powder flying and affecting the accuracy of material discharge.

[0063] After the cable materials are mixed in the premixing bin 24, the cable materials are taken from the premixing bin 24 into the discharge bin 25 for discharge. The discharge structure of the premixing bin 24 into the discharge bin 25 is a butterfly valve, a gate valve or any other structure for controlling material discharge in the prior art. After the cable materials enter the discharge bin 25, they are directly fed into the extruder 1.

[0064] A polyvinyl chloride cable material extrusion method comprises:

[0065] S1: Weigh 60-70 parts of polyvinyl chloride, 8-16 parts of nitrile rubber, 3-6 parts of silicon dioxide, 0.5-1.5 parts of silane coupling agent KH-560, and 0.3-1.2 parts of microcrystalline wax according to weight and set aside.

[0066] S2: Add polyvinyl chloride, nitrile rubber and microcrystalline wax into the discharge hopper 2 in sequence, and add silane coupling agent KH-560 and silicon dioxide into the discharge box 271.

[0067] S3: Polyvinyl chloride, nitrile rubber and microcrystalline wax enter the premixing bin 24 under the rotation of the discharge shaft 231. At the same time, the silane coupling agent KH-560 and silicon dioxide are evenly mixed with polyvinyl chloride, nitrile rubber and microcrystalline wax under the action of the bulk plate 2233 and the blowing port 22331.

[0068] S4: After mixing is completed, the butterfly valve is opened to allow the material to enter the discharge bin 25 and directly feed the material to the extruder 1.

[0069] It should be noted here that polyvinyl chloride, nitrile rubber and microcrystalline wax are granular materials, silane coupling agent KH-560 is liquid material, and silicon dioxide is powder material.

[0070] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0071] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An extrusion device for producing polyvinyl chloride cable materials, characterized in that: include: An extruder, a lower hopper fixedly mounted on the extruder, and a fan connected to the lower hopper; The discharge hopper includes: a feed bin; a partition fixedly mounted on the feed bin; a discharge assembly for controlling the discharge of materials in the feed bin, a premixing bin for premixing the materials; and a discharge bin; The unloading assembly includes: a support frame fixedly mounted on the unloading hopper, a slide rail fixedly mounted on the support frame, a motor slidably mounted on the slide rail, a gear three fixedly mounted on the output shaft of the motor, and a unloading shaft rotatably mounted on the feed bin.

2. The extrusion device for producing polyvinyl chloride cable material according to claim 1, characterized in that: The blanking shafts are provided in three groups, and two groups of the blanking shafts which are not coaxial with the motor output shaft are respectively fixedly mounted with gear 1 and gear 2.

3. The extrusion device for producing polyvinyl chloride cable material according to claim 2, characterized in that: A connecting rod is fixedly mounted on the motor output shaft, a limiting block is fixedly mounted on one end of the connecting rod, and a limiting slot is provided on the blanking shaft.

4. The extrusion device for producing polyvinyl chloride cable material according to claim 3, characterized in that: A flat key is also fixedly installed on the motor output shaft, a support rod is fixedly installed on the support frame, a transmission wheel is rotatably installed on the support rod, a connecting hole is provided on the transmission wheel, a key slot is provided on the connecting hole, the transmission wheel is connected to a pulley through a belt drive, a transmission shaft is fixedly connected to the pulley, a connecting rod is fixedly connected to the transmission shaft, and a bulk plate is rotatably connected to the connecting rod.

5. The extrusion device for producing polyvinyl chloride cable material according to claim 4, characterized in that: The bulk material plate is a hollow structure, and has multiple groups of air blowing ports on its surface. The bulk material plate is connected to air pipe 1, the lower hopper is connected to a ventilation shell, the fan outlet is connected to air pipe 2, and the air pipe 2 is connected to the ventilation shell.

6. The extrusion device for producing polyvinyl chloride cable material according to claim 5, characterized in that: A blanking box is fixedly mounted on the vent shell, and a blanking piece is provided at the connection between the blanking box and the vent shell. The blanking piece consists of a guide rod, a piston fixedly mounted on the guide rod, a connecting sleeve sleeved on the piston, a spring fixedly mounted on the connecting sleeve, a push rod fixedly mounted on the guide rod, a baffle fixedly mounted on the push rod, and a blanking trough opened on the baffle.

7. The extrusion device for producing polyvinyl chloride cable material according to claim 6, characterized in that: One end of the guide rod is provided with an inclined surface, one end of the air pipe is fixedly mounted on the inclined block, and one end of the spring is connected to the piston.

8. The extrusion device for producing polyvinyl chloride cable material according to claim 7, characterized in that: A limit pin is fixedly mounted on the piston, a guide groove is provided on the connecting sleeve, and the limit pin matches the guide groove.

9. An extrusion method for producing polyvinyl chloride cable materials, applied to an extrusion device for producing polyvinyl chloride cable materials according to any one of claims 1 to 8, characterized in that: include: S1: Weigh 60-70 parts of polyvinyl chloride, 8-16 parts of nitrile rubber, 3-6 parts of silicon dioxide, 0.5-1.5 parts of silane coupling agent KH-560, and 0.3-1.2 parts of microcrystalline paraffin according to weight parts and set aside; S2: Add polyvinyl chloride, nitrile rubber and microcrystalline wax into the discharge hopper in sequence, and add silane coupling agent KH-560 and silicon dioxide into the discharge box; S3: PVC, nitrile rubber and microcrystalline wax enter the premixing bin under the rotation of the discharge shaft. At the same time, silane coupling agent KH-560 and silicon dioxide are evenly mixed with PVC, nitrile rubber and microcrystalline wax under the action of the bulk plate and the air outlet. S4: After mixing is completed, open the butterfly valve to allow the material to enter the discharge bin and feed directly into the extruder.

Images