An extrusion device for cable production

Abstract

The utility model relates to cable production technical field, and disclose a kind of extrusion device for cable production, including support extrusion pedestal, the front of support extrusion pedestal is fixedly installed with control box. By being provided with the triangular control quantity conical seat of bucket type feed hopper bottom can guide raw material ordered flow to circumferentially distributed blanking hole, avoid raw material accumulation blockage, while small motor drives to scatter stirring rod and control quantity fan blade rotation, the raw material of feed box is effectively scattered, break lump, prevent uneven extrusion caused by raw material agglomeration, cooperate the aperture of blanking hole, can accurately control raw material falling speed, make the raw material amount entering feed hopper keep stable, provide uniform material basis for subsequent extrusion heating cylinder melt and conveying, reduce the cable outer layer thickness deviation caused by raw material supply fluctuation, reach the effect of improving cable extrusion stability.

Description

Technical Field

[0001] This utility model relates to the field of cable production technology, specifically to an extrusion device for cable production. Background Technology

[0002] Cable extrusion equipment is the core equipment in the production of wires and cables. Through heating, extrusion and cooling processes, plastic granules (such as polyethylene, polyvinyl chloride, etc.) are continuously coated onto the conductor or core to form an insulation layer, shielding layer, inner sheath or outer sheath. In the cable production process, the extrusion process is the key link that determines the quality of the cable insulation layer and sheath layer. Traditional extrusion equipment lacks effective quantity control and dispersion mechanisms in the raw material supply stage. Raw materials (such as plastic granules) are prone to clumping during feeding due to moisture, transportation compression, etc. Directly entering the extrusion heating cylinder leads to uneven melting, resulting in defects such as bubbles and uneven thickness in the cable outer layer. Furthermore, traditional feeding structures rely heavily on the raw material's own gravity for feeding, and the feeding speed is greatly affected by the raw material's bulk density. When the amount of raw material decreases or the particle size is uneven, supply fluctuations easily occur, causing the extruded cable outer layer thickness to deviate beyond the allowable range, affecting product consistency. Simultaneously, in the cooling and molding stage, the relative position of the extruder head and extrusion port is fixed, making it difficult to adapt to the production needs of different cable specifications. Changing the extruder head requires machine shutdown and adjustment, which is time-consuming and reduces production efficiency. Therefore, a new extrusion device for cable production needs to be designed. Utility Model Content

[0003] The purpose of this invention is to provide an extrusion device for cable production, which solves the technical problems of uneven material flow control and insufficient cooling efficiency after extrusion, thereby ensuring extrusion stability and improving product qualification rate.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an extrusion device for cable production, comprising a supporting extrusion base, a control box fixedly installed on the front of the supporting extrusion base, an extrusion heating cylinder arranged above the supporting extrusion base, a motor fixedly installed on one side of the extrusion heating cylinder via a support seat, a conveying rod arranged at the output end of the motor via a coupling, the conveying rod movably penetrating the interior of the extrusion heating cylinder, a spiral conveying blade fixedly installed on the outer wall of the conveying rod, an extrusion port opened at the front end of the extrusion heating cylinder, a feed hopper connected to the top of the extrusion heating cylinder, and a support frame fixedly installed on the outer wall of the feed hopper; a quantity control extrusion assembly, the quantity control extrusion assembly being arranged above and outside the extrusion heating cylinder; the quantity control extrusion assembly comprising: a quantity control part, the quantity control part being arranged above the extrusion heating cylinder; and an extrusion cooling part, the extrusion cooling part being arranged outside the extrusion heating cylinder and below the quantity control part.

[0005] Preferably, the quantity control part includes: a dispersing feed box, which is fixedly installed on the top of the feed hopper; a feed inlet is provided at the bottom of the dispersing feed box; a bucket-shaped feed hopper is fixedly installed on the top of the dispersing feed box; and a triangular quantity control cone seat is fixedly installed at the bottom of the bucket-shaped feed hopper.

[0006] Preferably, the bottom circumference of the bucket-shaped feed hopper is provided with equal-distance discharge holes that extend into the interior of the dispersing feed box, and a small motor is fixedly installed on one side of the outer wall of the dispersing feed box by a support block.

[0007] Preferably, the output end of the small motor is provided with a dispersing and stirring rod via a coupling, and the dispersing and stirring rod extends into the interior of the dispersing feed box. Control blades are fixedly installed at equal intervals on the outer circumference of the dispersing and stirring rod.

[0008] Preferably, the extrusion cooling section includes: an extrusion guide plate, which is fixedly installed on the front end face of the extrusion port; a movable slide rail, which is opened on the top of the supporting extrusion base, and there are two sets of the movable slide rail; a cooling chamber is opened inside the extrusion guide plate; a cooling air pump is provided on the outer wall of the extrusion guide plate, and the cooling air pump is located on the top of the supporting extrusion base; and an air supply pipe is connected to the connection port of the cooling air pump.

[0009] Preferably, the other end of the gas supply pipe is connected to a cooling box, and the cooling box is fixedly installed on the top of the extrusion guide plate. Cooling gas supply pipes are uniformly and equidistantly connected to the inner side wall of the cooling box, and the cooling gas supply pipes movably pass through the top of the extrusion guide plate and extend into the interior of the cooling chamber.

[0010] Preferably, the extrusion guide plate has an internally connected extrusion guide tube, one end of which is adapted to the extrusion port, and the outer wall of the extrusion guide tube has cooling holes.

[0011] Preferably, the outer wall of the movable slide rail is slidably connected to an extrusion head mounting plate. The outer wall of the extrusion head mounting plate has a mounting hole, and an extrusion head is fixedly installed inside the mounting hole. The extrusion head is adapted to the other end of the extrusion guide tube. An embedded rod is fixedly installed on the outer wall of the extrusion head mounting plate, and the embedded rod extends to the outer wall of the extrusion guide plate. A buffer spring is sleeved on the outer wall of the embedded rod.

[0012] This utility model provides an extrusion device for cable production. It has the following advantages: (1) This utility model guides the raw materials to flow in an orderly manner to the circumferentially distributed discharge holes by setting a triangular control cone seat at the bottom of the bucket-shaped feed hopper, avoiding the accumulation and blockage of raw materials. At the same time, the small motor drives the dispersing and stirring rod and the control fan blade to rotate, effectively dispersing the raw materials in the feed box, breaking up the lumps, and preventing uneven extrusion caused by the agglomeration of raw materials. With the diameter of the discharge hole, the falling speed of the raw materials can be precisely controlled, so that the amount of raw materials entering the feed hopper remains stable, providing a uniform material base for the melting and conveying in the subsequent extrusion heating cylinder, reducing the deviation of the outer layer thickness of the cable caused by the fluctuation of raw material supply, and achieving the effect of improving the extrusion stability of the cable.

[0013] (2) This utility model can perform preliminary shaping of the molten material extruded from the extrusion port by setting an extrusion guide tube in the extrusion guide plate. With the help of the cooling air pump, the cooling gas is sent into the cooling chamber through the air supply pipe, cooling box and cooling air supply pipe. The cooling gas comes into contact with the molten material through the cooling holes on the outer wall of the extrusion guide tube, which can quickly remove heat and make the material initially solidify, avoiding deformation due to gravity or external force before entering the extrusion head. At the same time, the sliding of the extrusion head mounting plate along the moving slide rail makes it convenient to flexibly adjust the relative position of the extrusion head and the extrusion guide tube according to different cable specifications. The buffer spring embedded in the outer wall of the rod can effectively buffer the vibration caused by the pressure fluctuation of the raw material during the extrusion process, reduce the shaking of the extrusion head, ensure the accuracy of the outer layer size of the cable, and achieve the effect of improving the extrusion molding quality. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of an extrusion device for cable production according to this utility model; Figure 3 This is a cross-sectional view of an extrusion device for cable production according to the present invention. Figure 4 This is a side view of the structure of the control section of an extrusion device for cable production according to this utility model.

[0015] In the diagram: 1. Extrusion base support; 2. Control box; 3. Extrusion heating cylinder; 31. Motor; 32. Conveying rod; 33. Spiral conveying blade; 34. Extrusion port; 4. Feed hopper; 5. Controlled extrusion assembly; 51. Controlled part; 511. Dispersing feed box; 512. Feed port; 513. Bucket-shaped feed hopper; 514. Triangular controlled conical seat; 515. Discharge hole; 516. Small motor; 517. Dispersing mixing rod; 518. Controlled fan blade; 52. Extrusion cooling part; 521. Extrusion guide plate; 522. Cooling chamber; 523. Cooling air pump; 524. Air supply pipe; 525. Cooling box; 526. Cooling air supply pipe; 527. Extrusion guide pipe; 528. Cooling hole; 529. Moving slide rail; 5210. Extrusion head mounting plate; 5211. Extrusion head; 5212. Embedded rod; 5213. Buffer spring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Example

[0018] Based on the existing problems of uneven material flow control and insufficient cooling efficiency after extrusion, the preferred embodiment of the extrusion device for cable production provided by this utility model is as follows: Figure 1-4 As shown: An extrusion apparatus for cable production includes a supporting extrusion base 1, a control box 2 fixedly mounted on the front of the supporting extrusion base 1, an extrusion heating cylinder 3 disposed above the supporting extrusion base 1, a motor 31 fixedly mounted on one side of the extrusion heating cylinder 3 via a support seat, a conveying rod 32 disposed at the output end of the motor 31 via a coupling, and the conveying rod 32 movably penetrates the interior of the extrusion heating cylinder 3; a spiral conveying blade 33 is fixedly mounted on the outer wall of the conveying rod 32; and the front end of the extrusion heating cylinder 3... An extrusion port 34 is provided, and a feed hopper 4 is connected to the top of the extrusion heating cylinder 3, with a support frame fixedly installed on the outer wall of the feed hopper 4; a quantity control extrusion assembly 5 is provided above and outside the extrusion heating cylinder 3; the quantity control extrusion assembly 5 includes: a quantity control part 51, which is provided above the extrusion heating cylinder 3; and an extrusion cooling part 52, which is provided outside the extrusion heating cylinder 3 and below the quantity control part 51.

[0019] The quantity control part 51 includes: a dispersing feed box 511, which is fixedly installed on the top of the feed hopper 4; a feed inlet 512 is opened at the bottom of the dispersing feed box 511; a bucket-shaped feed hopper 513 is fixedly installed on the top of the dispersing feed box 511; and a triangular quantity control cone seat 514 is fixedly installed at the bottom of the bucket-shaped feed hopper 513.

[0020] The bottom circumference of the bucket-shaped feed hopper 513 is provided with equal-distance discharge holes 515, which extend into the interior of the dispersing feed box 511. A small motor 516 is fixedly installed on one side of the outer wall of the dispersing feed box 511 by a support block.

[0021] The output end of the small motor 516 is equipped with a dispersing and stirring rod 517 via a coupling, and the dispersing and stirring rod 517 extends into the interior of the dispersing feed box 511. Control fan blades 518 are fixedly installed at equal intervals on the outer circumference of the dispersing and stirring rod 517.

[0022] Furthermore, in this embodiment, the triangular control cone seat 514 at the bottom of the bucket-shaped feed hopper 513 guides the raw material to flow orderly to the circumferentially distributed discharge holes 515, avoiding raw material accumulation and blockage. At the same time, the small motor 516 drives the dispersing and stirring rod 517 and the control fan blade 518 to rotate, effectively dispersing the raw material in the feed box 511, breaking up agglomerates, and preventing uneven extrusion caused by raw material agglomeration. Combined with the diameter of the discharge hole 515, the falling speed of the raw material can be precisely controlled, keeping the amount of raw material entering the feed hopper 4 stable, providing a uniform material base for subsequent melting and conveying in the extrusion heating cylinder 3, and reducing the deviation in cable outer layer thickness caused by fluctuations in raw material supply. Example

[0023] Based on Embodiment 1, a preferred embodiment of the extrusion apparatus for cable production provided by this utility model is, for example... Figure 1-4 As shown: the extrusion cooling section 52 includes: an extrusion guide plate 521, which is fixedly installed on the front end face of the extrusion port 34; a movable slide rail 529, which is opened on the top of the extrusion base 1, and there are two sets of the movable slide rail 529; a cooling chamber 522 is opened inside the extrusion guide plate 521; a cooling air pump 523 is provided on the outer wall of the extrusion guide plate 521, and the cooling air pump 523 is located on the top of the extrusion base 1; the connection port of the cooling air pump 523 is connected to an air supply pipe 524.

[0024] The other end of the gas supply pipe 524 is connected to a cooling box 525, and the cooling box 525 is fixedly installed on the top of the extrusion guide plate 521. Cooling gas supply pipes 526 are evenly and equidistantly connected to the inner side wall of the cooling box 525, and the cooling gas supply pipes 526 movably pass through the top of the extrusion guide plate 521 and extend into the interior of the cooling chamber 522.

[0025] The extrusion guide plate 521 is internally connected to an extrusion guide tube 527, and one end of the extrusion guide tube 527 is adapted to the extrusion port 34. The outer wall of the extrusion guide tube 527 is provided with a cooling hole 528.

[0026] The outer wall of the movable slide rail 529 is slidably connected to an extrusion head mounting plate 5210. The outer wall of the extrusion head mounting plate 5210 has a mounting hole, and an extrusion head 5211 is fixedly installed inside the mounting hole. The extrusion head 5211 is adapted to the other end of the extrusion guide tube 527. An embedded rod 5212 is fixedly installed on the outer wall of the extrusion head mounting plate 5210, and the embedded rod 5212 extends to the outer wall of the extrusion guide plate 521. A buffer spring 5213 is sleeved on the outer wall of the embedded rod 5212.

[0027] Furthermore, in this embodiment, the extrusion guide tube 527 within the extrusion guide plate 521 can perform preliminary shaping on the molten material extruded from the extrusion port 34. In conjunction with the cooling air pump 523, cooling gas is delivered into the cooling chamber 522 via the air supply pipe 524, cooling box 525, and cooling air supply pipe 526. The cooling gas contacts the molten material through the cooling holes 528 on the outer wall of the extrusion guide tube 527, quickly removing heat and allowing the material to initially solidify, preventing deformation due to gravity or external force before entering the extrusion head 5211. Simultaneously, the sliding of the extrusion head mounting plate 5210 along the movable slide rail 529 allows for flexible adjustment of the relative position of the extrusion head 5211 and the extrusion guide tube 527 according to different cable specifications. The buffer spring 5213 embedded in the outer wall of the rod 5212 effectively buffers vibrations caused by raw material pressure fluctuations during extrusion, reducing the shaking of the extrusion head 5211 and ensuring accurate cable outer layer dimensions.

[0028] In operation, the first step is the controlled feeding of raw materials. The operator pours the extrusion material into the bucket-shaped feed hopper 513. Guided by the triangular control cone seat 514, the material enters the dispersing feed box 511 through the circumferentially distributed discharge holes 515 at the bottom. At this time, a small motor 516 on one side of the dispersing feed box 511 starts, driving the dispersing and stirring rod 517 to rotate. The control fan blades 518 on the rod rotate simultaneously, dispersing the material entering the box to prevent clumping and blockage. Simultaneously, the rotation speed of the control fan blades 518 can be adjusted via the control box 2, precisely controlling the material's falling speed in conjunction with the diameter of the discharge holes 515, ensuring a stable amount of material entering the feed hopper 4, laying the foundation for uniform extrusion. The dispersed material then enters the feed hopper 4 through the feed inlet 512 and flows into the extrusion heating cylinder 3. Further, in the heating and extrusion stage, the extrusion heating cylinder 3 heats and melts the internal raw material. Simultaneously, the motor 31 drives the conveyor rod 32 to rotate via a coupling. The spiral conveyor blades 33 on the rod push the molten raw material towards the extrusion port 34. The continuous pushing of the spiral conveyor blades 33 ensures that the molten raw material is subjected to uniform pressure inside the cylinder, ensuring a continuous and stable flow of material extruded from the extrusion port 34, providing a uniform supply of raw materials for the extrusion of the outer layer of the cable. Furthermore, the molten material extruded from the extrusion port 34 enters the extrusion guide tube 527 inside the extrusion guide plate 521. Under the constraint of the guide tube, the shape of the outer layer of the cable is initially formed. At the same time, the cooling air pump 523 on the supporting extrusion base 1 is started, and the cooling gas is delivered to the cooling box 525 through the air supply pipe 524, and then enters the cooling chamber 522 through the cooling air supply pipe 526. The cooling gas in the cooling chamber 522 comes into contact with the molten material through the cooling holes 528 on the outer wall of the extrusion guide tube 527, quickly removes heat, and initially solidifies the material to avoid deformation in subsequent molding. Furthermore, the pre-cured material discharged from the extrusion guide tube 527 enters the extrusion head 5211, where it forms a cable outer layer conforming to specifications under the precision forming action of the extrusion head. The extrusion head mounting plate 5210 can slide along the movable slide rail 529, facilitating the adjustment of the relative position between the extrusion head 5211 and the extrusion guide tube 527 according to the cable specifications. The buffer spring 5213 on the outer wall of the embedded rod 5212 plays a buffering role during the extrusion process, reducing extrusion head vibration caused by fluctuations in raw material pressure and ensuring molding accuracy. Throughout the process, the control box 2 monitors the parameters of each stage in real time, ensuring stable cable extrusion quality by adjusting motor speed, heating temperature, cooling gas flow rate, etc.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An extrusion apparatus for cable production, comprising a supporting extrusion base (1), characterized in that: A control box (2) is fixedly installed on the front of the supporting extrusion base (1). An extrusion heating cylinder (3) is provided above the supporting extrusion base (1). A motor (31) is fixedly installed on one side of the extrusion heating cylinder (3) through a support seat. A conveying rod (32) is provided at the output end of the motor (31) through a coupling. The conveying rod (32) moves through the interior of the extrusion heating cylinder (3). A spiral conveying blade (33) is fixedly installed on the outer wall of the conveying rod (32). An extrusion port (34) is opened at the front end of the extrusion heating cylinder (3). A feed hopper (4) is connected to the top of the extrusion heating cylinder (3). A support frame is fixedly installed on the outer wall of the feed hopper (4). A controlled extrusion assembly (5) is disposed above and on the outside of the extrusion heating cylinder (3); The controlled extrusion assembly (5) includes: A quantity control part (51) is located above the extrusion heating cylinder (3); The extrusion cooling section (52) is located on the outside of the extrusion heating cylinder (3) and below the quantity control section (51).

2. An extrusion apparatus for cable production according to claim 1, characterized in that: The quantity control part (51) includes: Dispersing feed box (511), which is fixedly installed on the top of feed hopper (4); The bottom of the dispersing feed box (511) is provided with a feed inlet (512), the top of the dispersing feed box (511) is fixedly installed with a bucket-shaped feed hopper (513), and the bottom of the bucket-shaped feed hopper (513) is fixedly installed with a triangular control cone seat (514).

3. An extrusion apparatus for cable production according to claim 2, characterized in that: The bottom circumference of the bucket-shaped feed hopper (513) is provided with equal-distance discharge holes (515) that extend into the interior of the dispersing feed box (511). A small motor (516) is fixedly installed on one side of the outer wall of the dispersing feed box (511) by a support block.

4. An extrusion apparatus for cable production according to claim 3, characterized in that: The output end of the small motor (516) is provided with a dispersing and stirring rod (517) via a coupling, and the dispersing and stirring rod (517) extends into the interior of the dispersing feed box (511). Control fan blades (518) are fixedly installed at equal intervals on the outer circumference of the dispersing and stirring rod (517).

5. An extrusion apparatus for cable production according to claim 1, characterized in that: The extrusion cooling section (52) includes: Extrusion guide plate (521), which is fixedly installed on the front end face of the extrusion port (34); The movable slide rail (529) is located on the top of the supporting extruded base (1), and there are two sets of it; The extrusion guide plate (521) has a cooling chamber (522) inside. The outer wall of the extrusion guide plate (521) is provided with a cooling air pump (523), and the cooling air pump (523) is located on the top of the supporting extrusion base (1). The connection port of the cooling air pump (523) is connected to an air supply pipe (524).

6. An extrusion apparatus for cable production according to claim 5, characterized in that: The other end of the gas supply pipe (524) is connected to a cooling box (525), and the cooling box (525) is fixedly installed on the top of the extrusion guide plate (521). Cooling gas supply pipes (526) are uniformly and evenly connected to the inner side wall of the cooling box (525), and the cooling gas supply pipes (526) move through the top of the extrusion guide plate (521) and extend into the interior of the cooling chamber (522).

7. An extrusion apparatus for cable production according to claim 6, characterized in that: The extrusion guide plate (521) is internally connected to an extrusion guide tube (527), and one end of the extrusion guide tube (527) is adapted to the extrusion port (34). The outer wall of the extrusion guide tube (527) is provided with cooling holes (528).

8. An extrusion apparatus for cable production according to claim 7, characterized in that: The outer wall of the movable slide rail (529) is slidably connected to an extrusion head mounting plate (5210). The outer wall of the extrusion head mounting plate (5210) is provided with a mounting hole, and an extrusion head (5211) is fixedly installed inside the mounting hole. The extrusion head (5211) is adapted to the other end of the extrusion guide tube (527). An embedded rod (5212) is fixedly installed on the outer wall of the extrusion head mounting plate (5210), and the embedded rod (5212) extends to the outer wall of the extrusion guide plate (521). A buffer spring (5213) is sleeved on the outer wall of the embedded rod (5212).

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