Device and method for replacing plates of serial extruding machine without shutdown

Abstract

The invention discloses a device and a method for string extruder non-stop disc replacement, and belongs to the technical field of power equipment.The device comprises a pay-off device and a processing device, the pay-off device can provide conductors for the processing device, the processing device can process the conductors, the pay-off device comprises a plurality of pay-off racks and a crimping machine, the pay-off racks are provided with the conductors needing to be processed, and the crimping machine is provided with a plurality of crimping devices; a conductor on the pay-off rack is connected with the processing device or one end of the crimping machine; before the conductor of the pay-off rack connected with the processing device completely enters the processing device, the tail end of the conductor can be connected with the other end of the crimping machine, the crimping machine can be connected with the conductor, the outer diameter of the conductor can be adjusted, and it is guaranteed that the conductors on different pay-off racks can continuously enter the processing device. According to the pay-off system, the two pay-off racks are arranged, continuous feeding of the pay-off system is achieved, and when a conductor on the first pay-off rack is about to be used up, the second pay-off rack can supplement the conductor for the first pay-off rack. And the pay-off rack I is matched with the pay-off rack II, so that continuous feeding can be ensured.

Description

Technical Field

[0001] The invention relates to a device and method for changing discs of a string extruder without stopping the machine, belonging to the technical field of power equipment. Background Art

[0002] Double-layer rubber-jacketed electrical wires, a common and essential component in modern electrical and electronic equipment, require continuous, stable, and efficient cable insulation and jacket extrusion processes during production. Traditionally, continuous conductor supply places high demands on equipment, and conductors are often supplied in reels during processing. During conductor processing, the supplied conductors are placed in a single payout rack. When the payout rack's conductor supply runs out, the machine must be shut down and the conductors manually processed. This involves shutting down the machine to reel in the wire, removing the empty reel containing the used conductor, then replacing it with a new reel. Manual operations are then performed to rethread the conductor, adjust the wire flow, adjust the wire deviation, and place the reel on the wire.

[0003] In existing technology, exhausting a reel of conductor requires a series of tedious operations. This not only increases equipment downtime but also increases the difficulty of manual operation, severely restricting production efficiency and product stability. Therefore, it is necessary to design a device and method for continuously changing reels in a string extruder. This device can provide a new conductor before the conductor in the payout rack is exhausted, reducing the time and process required for equipment downtime and reel replacement. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a device and method for changing discs of a string extruder without stopping the machine, which solves the problem that the string extruder needs to be stopped to change discs and replenish conductors after the conductors are exhausted.

[0005] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions: A device for changing discs of a continuous extruder without stopping the machine, comprising Pay-off device, processing device, The pay-off device can provide conductors to the processing device, and the processing device can process the conductors. Its characteristics are: The pay-off device includes a plurality of pay-off racks and a crimping machine. The pay-off racks are provided with conductors to be processed. The conductors on the pay-off racks are connected to the processing device or to one end of the crimping machine. Before the conductor of the pay-off frame connected to the processing device completely enters the processing device, the end of the conductor can be connected to the other end of the crimping machine. The crimping machine can connect conductors and adjust the outer diameter of the conductors, ensuring that conductors on different pay-off racks can continuously enter the processing device.

[0006] Preferably, there are two pay-off racks, namely, pay-off rack one and pay-off rack two.

[0007] Preferably, the processing device includes an insulation extruder, a cooling device, a sheath extruder, a traction device, and a take-up frame. The wire passes through the insulation extruder and is cooled by the cooling device, then passes through the sheath extruder, and then is cooled by the cooling device and set on the take-up frame by the traction device.

[0008] Preferably, the crimping machine includes a crimping die, a hydraulic system, and a supporting device. The hydraulic system is arranged inside the supporting device, and the crimping die is arranged on the top of the supporting device.

[0009] Preferably, a crimping tube is provided at the center of the crimping die, and the two conductors are crimped at the crimping tube.

[0010] Preferably, the bottom of the supporting device is provided with universal wheels, and the supporting device can be moved by the universal wheels.

[0011] A method for changing the disc of a string extruder without stopping the machine is realized by using a device for changing the disc of a string extruder without stopping the machine. include: Step 1: Connecting the conductor on the first pay-off stand to the processing device for processing; Step 2: Before the conductor on the first pay-off stand is about to be used up, the second pay-off stand is set up, and the conductor on the second pay-off stand is not used; Step 3: The conductor on the second pay-off frame is arranged in the crimping machine, and the end of the conductor on the first pay-off frame is arranged in the crimping machine; Step 4: Two conductors are fixed at the crimping tube of the crimping machine, the crimping machine is started to connect the two conductors, and the outer diameters of the two conductors are adjusted; Step 5: The conductor on the second pay-off stand is connected to the processing device for processing.

[0012] Preferably, the diameter of the crimping tube is adjusted according to the diameter of the conductor.

[0013] Preferably, after the conductor on the second pay-off stand is connected to the processing device, the tension of the second pay-off stand is adjusted to meet the processing requirements of the processing device.

[0014] The beneficial effects of the present invention are: The present invention provides two pay-off stands, enabling continuous feeding of the pay-off system. When the conductor on pay-off stand one is about to run out, pay-off stand two can replenish it. Pay-off stand one and pay-off stand two work together to ensure continuous feeding. Specifically, the conductor on pay-off stand one is used for normal processing. Just before pay-off stand two runs out of conductor, pay-off stand two is activated to supply conductors to the processing device.

[0015] With the present invention, the conductor end of one payout frame is placed in a crimping machine, and the conductor top of another payout frame is also placed in the crimping machine. The crimping machine can connect the two conductors and adjust the outer diameter, ensuring that the two conductors maintain the same outer diameter and tension at the connection, reducing the impact of outer diameter differences on subsequent processing. Specifically, the conductor end and the top of the first conductor are fixed in the crimping tube of the crimping machine, and the crimping machine is started to crimp the two conductors together, adjusting the outer diameter of the different conductors.

[0016] The present invention provides guide wheels at the bottom of the crimping machine, enhancing the flexibility and adaptability of the equipment and ensuring rapid overall response and precise docking during reel changes. After the crimping machine completes crimping and adjusts the outer diameters of the conductors, the conductors on the second payout stand can be smoothly connected to the processing device and continue with the insulation extrusion, cooling, and sheath extrusion steps. This achieves the effect of reel change without stopping the machine, improving production efficiency and reducing material waste and time costs caused by operations such as downtime, threading, glue flow, and deviation adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the crimping machine of the present invention.

[0019] In the figure: 1-pay-off stand 1, 2-pay-off stand 2, 3-crimping machine, 31-crimping die, 32-support device, 321-universal wheel, 4-front traction, 5-insulation extruder, 6-cooling water trough, 7-powdering machine, 8-sheath extruder, 9-cooling water trough, 10-rear traction, 11-take-up stand. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments. Example 1

[0021] like Figure 1-Figure 2 As shown, a device for changing the disc of a string extruder without stopping the machine includes a wire-paying device and a processing device. The wire-paying device can provide conductors to the processing device, and the processing device can process the conductors processed by the wire-paying device.

[0022] In this embodiment, the payout device includes multiple payout stands and a crimping machine 3. The conductor to be processed is placed on the payout stands, and the conductor on the payout stands is connected to the processing device or to one end of the crimping machine. In this embodiment, two payout stands are provided, including payout stand 1 and payout stand 2. Before the conductor on the payout stand connected to the processing device fully enters the processing device, the end of the conductor can be connected to the other end of the crimping machine.

[0023] The crimping machine can adjust the outer diameter of the conductor to ensure that the conductors on different pay-off racks can continuously enter the processing device.

[0024] Reference Figure 1 The pay-off device includes a pay-off stand 1 and a pay-off stand 2. In this embodiment, both pay-off stands utilize a vertical support structure with a shaft located at the top or center to secure the conductor disc. The disc can rotate around the fixed shaft, continuously supplying conductors to the processing device. The pay-off device is entirely constructed of metal, providing sufficient mechanical strength and stability to ensure that the large disc conductor does not shake or deform during high-speed pay-off.

[0025] When the pay-off stand 1 is working normally, it provides conductors for the processing device; at this time, the pay-off stand 2 is in a ready state. Before the conductor on the pay-off stand 1 is exhausted, the pay-off stand 2 can guide the conductor stored on itself to the crimping machine 3 and dock it with the conductor end of the pay-off stand 1.

[0026] Reference Figure 2 The crimping machine 3 is a vertical box-shaped structure with a crimping die 31 mounted on the top and a support device 32 at the bottom. The crimping machine 3 can crimp two conductors and fine-tune their outer diameters through the crimping die 31, achieving coaxial docking and ensuring smooth, seamless switching between conductors. It also ensures consistent dimensions and continuous tension after the conductors enter the processing device.

[0027] The crimping die 31 is installed in the center of the top of the crimping machine 3. A crimping tube is provided in the center of the crimping die 31. The crimping tube is used for inserting the two conductor ends and crimping them together. During this process, the crimping die 31 performs crimping operations according to the conductor specifications.

[0028] A support device 32 is provided at the bottom of the crimping machine 3. The support device 32 is a rectangular parallelepiped base. A hydraulic system is installed inside the support device 32 to drive the opening and closing of the crimping die 31 or adjust its outer diameter. A control panel is provided on the outside of the support device 32, allowing the operator to adjust the crimping die 31. Universal wheels 321 are provided at the bottom of the support device 32. These wheels enable the crimping machine to be flexibly moved and adjusted within the working area, allowing it to connect to different types of pay-offs or processing lines. Four universal wheels are provided, fixed at the four corners of the bottom of the support device 32.

[0029] Reference Figure 1 The processing device includes an insulation extruder 4, a cooling device, a sheath extruder 8, a traction device, and a take-up frame 11. In this embodiment, the traction device includes a front traction device 4 and a rear traction device 10. The front traction device 4 is located at the initial stage of the production line. It typically utilizes multiple pairs of tension pulleys or traction belts, ensuring that the conductor from pay-off frame 1 or pay-off frame 2 enters the extrusion process while maintaining a stable tension. In this embodiment, the front traction device 4 is a vertical frame with an adjustable tension mechanism installed within it.

[0030] The rear end of the front traction 4 is provided with an insulation extruder 5, which can perform preliminary extrusion on the conductor and extrude a layer of insulation material on the periphery of the conductor. In this embodiment, the insulation extruder 5 adopts a common structure on the market.

[0031] The cooling device includes a plurality of cooling water tanks. A cooling water tank 6 is provided at the rear end of the insulation extruder 5. The cooling water tank 6 can be used to cool and shape the insulation layer just extruded. The cooling water tank 6 is a rectangular tank.

[0032] A powder applicator 7 is provided at the rear end of the cooling water tank 6. The powder applicator can spread powder on the surface of the cable insulation layer to prevent adhesion between the insulation layer and the sheath layer of the wire. In this embodiment, the powder applicator is a box structure with a powder tank and a spraying device inside the box. When the wire passes through the powder, it is evenly adhered to the surface.

[0033] A sheath extruder 8 is provided at the rear end of the powdering machine 7. The sheath extruder 8 can extrude a second layer of sheath outside the insulated wire to form the outer layer protection of the double-layer rubber sheathed wire. In this embodiment, the sheath extruder 8 adopts a common structure on the market and can extrude sheath materials such as PVC.

[0034] A cooling water trough 9 is located behind the sheath extruder 8. This trough helps to shape the cable sheath after it is formed. After the conductor passes through the cooling trough 9, it is pulled back 10 and placed on a take-up rack 11. This rack 11 is equipped with a take-up reel that can accommodate the processed conductor.

[0035] Reference Figure 1 In the pay-off device and processing device, the conductor output by pay-off stand 1 or pay-off stand 2 enters the front traction 4, which can control the conductor to remain stable and continuously pulled into the insulation extruder 5. When the conductor on the pay-off stand connected to the processing device is about to run out, the crimping machine 3 can be activated, and the conductor on the other pay-off stand can be pre-fed into the crimping die 31 of the crimping machine 3. The conductor is crimped at the same position as the conductor end of the pay-off stand, and the outer diameter of the conductor is adjusted to make the two conductors docked. When the conductor on the pay-off stand is used up, the processing device can automatically use the conductor on the other pay-off stand, realizing the reel change without stopping the machine.

[0036] The crimping machine 3 is equipped with a crimping tube within the crimping die 31. This tube can be adjusted to its diameter by passing through a hydraulic device. This ensures that the two conductors maintain a consistent outer diameter at the connection point, preventing subsequent jamming or misalignment within the processing unit. Once the two conductors are connected, the second pay-off unit can continue feeding the processing unit, ensuring uninterrupted, continuous production. After the crimping tube is connected to the two conductors within the crimping machine 3, it follows the two conductors into the processing unit.

[0037] After exiting the insulation extruder 5, the conductor enters the cooling water tank 6 for cooling and shaping. It then passes through the powder mill 7 for powder treatment before being formed by the sheath extruder 8. After further shaping in the cooling water tank 9, the conductor is pulled out by the rear traction 10 and finally taken up on the take-up frame 11. The entire cable production process remains continuous and is not interrupted by reel changes at the pay-off end.

[0038] The specific method of using this device is as follows: Step 1: Connect the conductor on the pay-off stand 1 to the processing device, and process the conductor through the processing device.

[0039] Step 2: Before the conductor on the pay-off stand 1 is about to be used up, the pay-off stand 2 is set up, and the conductor on the pay-off stand 2 is not used.

[0040] Step 3: Place the conductor on the pay-off stand 2 in the crimping machine, and place the conductor end on the pay-off stand 1 in the crimping machine 3.

[0041] Step 4: The two conductors are fixed to the crimping tube of the crimping machine 3, and the crimping machine is started to adjust the outer diameters of the two conductors.

[0042] Step 5: Connect the conductor on the pay-off stand 2 to the processing device for processing.

[0043] In this embodiment, the diameter of the crimping tube is adjusted according to the conductor, ensuring that after different conductors are set on the crimping machine 3 and crimped, the contact surfaces of the conductors maintain the same diameter.

[0044] Before the conductor on pay-off stand 1 is finished, the end of the conductor is connected to the conductor on pay-off stand 2 using a crimping machine 3. The conductor on pay-off stand 2 can then follow the conductor on pay-off stand 1 into the processing device. Once the conductor on pay-off stand 2 enters the processing device, the tension of pay-off stand 2 needs to be adjusted to ensure that the conductor provided by pay-off stand 2 meets the processing requirements of the processing device.

[0045] In this embodiment, by adding a crimping machine 3 and a second pay-off stand 2 to the existing string extruder pay-off device, when the conductor in pay-off stand 1 is about to run out, the crimping machine 3 can switch to the second pay-off stand 2 for feeding, allowing continuous production without stopping the machine. The crimping machine 3 can also dock the conductors and adjust the outer diameter.

[0046] It can reduce downtime and improve production efficiency, eliminating the need for frequent shutdowns, empty reels, and rethreading. It reduces production interruptions caused by reel changes and significantly improves the output rate of the entire cable production line.

[0047] The crimping die 31 of the crimping machine 3 can match and crimp the outer diameters of conductors from different sources, preventing inconsistent diameters at the splicing points or interference fit or looseness at the connections, thereby ensuring the normal operation of the processing device.

[0048] This embodiment utilizes a coordinated design of payout stand 1, payout stand 2, and crimping machine 3 to enable continuous conductor reel replacement without stopping the extruder. The crimping machine 3 can adjust the outer diameters of the two conductors, and the universal wheels 321 on its bottom ensure precise connection between conductors on different payout stands, meeting the production requirements of insulation and sheath extrusion in the processing device.

[0049] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art will appreciate that the present invention is not limited to the foregoing embodiments and that various modifications and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such modifications and improvements are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for changing discs of a continuous extruder without stopping the machine, comprising: Pay-off device, processing device, The pay-off device can provide conductors to the processing device, and the processing device can process the conductors. Its characteristics are: The pay-off device includes a plurality of pay-off racks and a crimping machine. The pay-off racks are provided with conductors to be processed. The conductors on the pay-off racks are connected to the processing device or to one end of the crimping machine. Before the conductor of the pay-off frame connected to the processing device completely enters the processing device, the end of the conductor can be connected to the other end of the crimping machine. The crimping machine can connect conductors and adjust the outer diameter of the conductors, ensuring that conductors on different pay-off racks can continuously enter the processing device.

2. The device for changing the disc of a continuous extruder without stopping the machine according to claim 1, characterized in that: There are two pay-off frames, namely pay-off frame one and pay-off frame two.

3. The device for changing the disc of a continuous extruder without stopping the machine according to claim 1, characterized in that: The processing device includes an insulation extruder, a cooling device, a sheath extruder, a traction device, and a wire take-up frame. The wire passes through the insulation extruder and is cooled by the cooling device, then passes through the sheath extruder, and then is cooled by the cooling device and set on the wire take-up frame by the traction device.

4. The device for changing the disc of a continuous extruder without stopping the machine according to claim 1, characterized in that: The crimping machine includes a crimping die, a hydraulic system, and a supporting device. The hydraulic system is arranged inside the supporting device, and the crimping die is arranged on the top of the supporting device.

5. The device for changing the disc of a continuous extruder without stopping the machine according to claim 4, characterized in that: A crimping tube is provided at the center of the crimping mold, and two conductors are crimped at the crimping tube.

6. The device for changing the disc of a continuous extruder without stopping the machine according to claim 4, characterized in that: The bottom of the support device is provided with universal wheels, and the support device can be moved by the universal wheels.

7. A method for changing discs in a continuous extruder without stopping the machine, wherein the method is implemented by using the device for changing discs in a continuous extruder without stopping the machine according to any one of claims 1 to 6, characterized in that: include: Step 1: Connecting the conductor on the first pay-off stand to the processing device for processing; Step 2: Before the conductor on the first pay-off stand is about to be used up, the second pay-off stand is set up, and the conductor on the second pay-off stand is not used; Step 3: The conductor on the second pay-off frame is arranged in the crimping machine, and the end of the conductor on the first pay-off frame is arranged in the crimping machine; Step 4: Two conductors are fixed at the crimping tube of the crimping machine, the crimping machine is started to connect the two conductors, and the outer diameters of the two conductors are adjusted; Step 5: The conductor on the second pay-off stand is connected to the processing device for processing.

8. The method for changing the disc of a continuous extruder without stopping the machine according to claim 7, characterized in that: The diameter of the crimping tube is adjusted according to the diameter of the conductor.

9. The method for changing the disc of a continuous extruder without stopping the machine according to claim 7, characterized in that: After the conductor on the second pay-off frame is connected to the processing device, the tension of the second pay-off frame is adjusted to meet the processing requirements of the processing device.

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