Opening reducing die device for drawing processing of photovoltaic copper wire and using method of opening reducing die device

Abstract

The invention relates to the technical field of wire drawing processing of metal wires, discloses an opening variable-diameter die device for wire drawing processing of photovoltaic copper wires and a use method, and aims to solve the problem of changing the diameters of the wires by replacing dies without breaking the wires during online production. According to the method, a device with an opening mold is adopted, and the method comprises the key steps that in the drawing shutdown state, a mold positioning wheel and a mold upper pressing wheel which correspond to each other up and down are separated by operating a lead screw mechanism, so that the mold is in the opening state; transversely clamping the wire rod into the opening or replacing a rolling forming die and a rolling shaping die with different diameters; transversely moving the mold to the center of the axis of the wire rod, and dynamically pressing the mold through a lead screw; and finally, a drawing mechanism is started, final closing of the die is completed in the drawing process, and continuous drawing forming of the wire is achieved. The method has the advantages that the operation is simple and convenient, online and continuous wire quick die change in the wire production process can be realized, and the production efficiency and the yield are effectively improved.

Description

Technical Field

[0001] This invention relates to a metal wire drawing die device, and more particularly to an open-diameter variable die device and its method of use for drawing photovoltaic copper wire. Background Technology

[0002] Currently, the production of photovoltaic transmission wire drawing typically involves the wire being inserted into a die hole and drawn by a drawing mechanism. As the wire passes through the die hole, the die squeezes the wire, compressing its cross-section and reducing its diameter. Because traditional dies have fixed die holes, the wire must be inserted into the die hole at its tip and pulled out as a wire end. The wire end is then fixed by the drawing mechanism, wound, and drawn. This process is prone to breakage during manual operation, and inserting the wire into the die hole is difficult and complex. Furthermore, the production of wire with only one die hole corresponds to one wire diameter, limiting the wire drawing process. During the wire drawing process, it is impossible to change dies of different diameters or alter the wire diameter at the midpoint of the wire, affecting production output. In view of these reasons, an open-diameter variable die device and its usage method for photovoltaic copper wire drawing are proposed. Summary of the Invention

[0003] The purpose of this invention is to overcome the limitations of traditional wire drawing processes for photovoltaic copper wires. Traditional methods involve manually inserting the wire tip into the die hole and pulling it out, which is difficult and complex. Furthermore, during wire drawing, it is impossible to change dies of different diameters or alter the wire diameter, affecting production output. This invention provides an open-end variable-diameter die device and its usage method for photovoltaic copper wire drawing. The die device is an open-end die, allowing the copper wire to enter laterally through the opening, preventing the wire from being pulled out or broken, thus reducing production difficulty. During wire drawing, different diameter dies can be changed at the middle of the wire without disconnecting it. This flexible die diameter change accelerates production and improves both the quantity and quality of wire produced.

[0004] To achieve the above objectives, this invention provides, on one hand, an opening-diameter-changing die device for photovoltaic copper wire drawing, comprising: a copper wire drawing device, an opening die, a die positioning wheel, a die upper pressure wheel, a die bushing, a roll forming die, a roll shaping die, an upper pressure wheel shaft, a locking nut, a die frame, a frame crossbeam, a slide rail, a slider, a cantilever, a die positioning frame, a first die positioning frame, a second die positioning frame, a die lower crossbeam, a die opening screw, a screw manual disc, an upper die slider, a lower die slider, a positioning screw, a wire lubrication device, a drawing mechanism, and a wire feeding mechanism; the copper wire drawing device is equipped with a front end... The wire lubrication device and the copper wire drawing device are arranged longitudinally from front to back as follows: a mold frame, a drawing mechanism, and a wire feeding mechanism. The upper end of the drawing mechanism is a winding shaft. The upper end of the mold frame is equipped with a frame beam. A slide is set in the middle of the frame beam. A slider is set above the slide. A pair of mold frames are symmetrically arranged on both sides of the slider. The pair of mold frames are respectively set as a first mold positioning frame and a second mold positioning frame. Cantilever arms are set between the sliders and the pair of mold frames. A lower mold beam is set between the lower parts of the pair of mold frames. The pair of mold frames, sliders, a pair of cantilever arms, and lower mold beam are combined to form a frame-shaped frame.

[0005] A pair of open molds are respectively set on the lower side of the first mold positioning frame and the second mold positioning frame. The pair of open molds are respectively set as a pair of mold pressure rollers corresponding to the upper and lower parts. The lower mold pressure rollers are respectively set as mold positioning rollers, and the upper mold pressure rollers are respectively set as upper mold pressure rollers. The upper mold pressure rollers and mold positioning rollers are used to roll the wire with the open molds.

[0006] The first mold positioning frame has mold grooves pre-reserved on the outer edges of the mold upper pressure roller and the mold positioning roller, respectively. Roll forming molds are set in the mold grooves, and a pair of roll forming molds are set as roll forming holes. The second mold positioning frame has mold grooves pre-reserved on the outer edges of the mold upper pressure roller and the mold positioning roller, respectively. Roll forming molds are set in the mold grooves, and a pair of roll forming molds are set as roll forming holes. The centers of the roll forming holes and the roll forming molds are set to correspond to the diameters of different wires.

[0007] The upper and lower parts of the first mold positioning frame and the second mold positioning frame are respectively reserved with sliding grooves. The upper mold slider is respectively set in the upper sliding groove. The upper mold slider has a long strip-shaped shaft hole reserved on one side of the upper pressure roller of the mold. The upper pressure roller shaft is set through the upper mold slider and the center of the upper pressure roller of the mold. A bushing is set between one end of the upper pressure roller shaft and the upper pressure roller of the mold, and a bushing lock nut is set at the other end of the upper pressure roller shaft. The upper end of the upper mold slider is equipped with a mold opening screw, and the upper end of the mold opening screw is equipped with a screw manual dial. The opening screw is used for the opening and closing movement of the upper pressure roller of the mold.

[0008] The lower slide is equipped with a lower mold slider. A long strip-shaped shaft hole is reserved on one side of the lower mold slider and the mold positioning wheel. An upper pressure roller shaft is installed through the center of the lower mold slider and the mold positioning wheel. A bushing is installed between one end of the upper pressure roller shaft and the mold positioning wheel, and a bushing lock nut is installed at the other end of the upper pressure roller shaft. A positioning screw is installed at the lower end of the lower mold slider, and a manual screw disc is installed at the lower end of the positioning screw. The positioning screw is used for the opening and closing movement of the mold positioning wheel. The positioning screw and the opening screw are used for the opening and closing of the opening mold.

[0009] On the other hand, the present invention provides an open-diameter variable mold device and a method of using it for photovoltaic copper wire drawing. During the production of the copper wire drawing device, the wire is sequentially wound and fixed by a wire lubrication device, a pair of open molds, a wire feeding mechanism, and a drawing mechanism.

[0010] During the production process, the wire is drawn and moved by the drawing mechanism, and the wire is lubricated by the wire lubrication device. After lubrication, the wire enters a pair of open dies. The die positioning wheels and upper pressure rollers of the pair of open dies are in a separate open state. After the wire is inserted into the opening of the pair of open dies, the die positioning wheels and upper pressure rollers of the pair of open dies merge and squeeze the wire, and the opening of the pair of open dies closes.

[0011] Simultaneously, the wire is drawn and stretched by the drawing mechanism, then shaped and rolled by the rolling forming die, further stretched, and rolled by the rolling forming die to form the finished wire. The finished wire is then routed through the wire feeding mechanism to the winding shaft of the drawing mechanism. After the winding shaft is filled with the finished wire, the wire drawing process is completed.

[0012] When the wire drawing process changes the diameter without disconnecting the wire for die replacement, the wire on the copper wire drawing device is in a stopped state. The first die positioning frame and the second die positioning frame open the rolling forming die and the rolling forming die of a pair of open dies respectively through the positioning screw and the opening screw. That is, the pair of open dies are in the open state, and the rolling forming die and the rolling forming die corresponding to the diameter of the wire being processed are replaced.

[0013] After the mold is changed, the first mold positioning frame and the second mold positioning frame drive a pair of open molds to move laterally to the center of the wire axis and stop. The positioning screw and the opening screw respectively dynamically press the rolling forming mold and the rolling forming mold of the pair of open molds. At the same time as the dynamic pressing, the pulling mechanism is started to pull the wire. When the rolling forming mold and the rolling forming mold are merged, the dynamic pressing of the rolling forming mold and the rolling forming mold is completed. The online replacement of the rolling forming mold and the rolling forming mold corresponding to the diameter of the processed wire is completed. The processed wire is continuously produced after the diameter is changed.

[0014] Beneficial effects: The mold device of the present invention is an open mold, which allows copper wire to enter the open mold laterally through the opening, avoiding the phenomenon of the wire being pulled out or broken after passing through the mold hole, thus reducing the difficulty of production; during the wire drawing process in online production, different diameter molds can be changed from the middle of the wire without disconnecting the wire, and the mold diameter can be changed flexibly, which can speed up production and promote the output and quality of wire production. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the overall assembly structure;

[0017] Figure 2 yes Figure 1 A schematic diagram of the side view structure;

[0018] Figure 3 yes Figure 1 A schematic diagram of the structure of a rolling forming die for a partially open mold;

[0019] Figure 4 yes Figure 1 A schematic diagram of the roll forming die structure for a partially open die;

[0020] Figure 5 yes Figure 4 A partial structural diagram;

[0021] Figure 6 yes Figure 4 A schematic diagram of the dynamic structure of the opening of the mold;

[0022] Figure 7 yes Figure 1 A schematic diagram of the assembly and copper wire drawing device;

[0023] Figure 1 , 2 1. Copper wire drawing device 2. Opening mold 3. Mold positioning wheel 2-1. Mold upper pressure wheel 2-2. Mold bushing 2-3. Roll forming mold 2-4. Roll forming mold 2-5. Upper pressure wheel shaft 2-6. Locking nut 2-7. Mold frame 3. Frame beam 4. Slide rail 5. Slider 6. Cantilever 6-1. Mold positioning frame 7. First mold positioning frame 7-1. Second mold positioning frame 7-2. Mold lower beam 7-3. Mold opening screw 8. Screw manual disc 9. Upper mold slider 10. Lower mold slider 11. Positioning screw 12. Wire lubrication device 13. Pulling mechanism 14. Wire feeding mechanism 15. Detailed Implementation

[0024] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the opening-diameter-changing die device and its usage method for photovoltaic copper wire drawing according to the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit the scope of protection of the invention.

[0025] Example 1: This example provides an open-end variable diameter die device for photovoltaic copper wire drawing. The main body of the device is a copper wire drawing device 1, with a wire lubrication device 13 at its front end. Vertically above the copper wire drawing device 1, from front to back, are a die frame 3, a drawing mechanism 14, and a wire feeding mechanism 15, wherein the upper end of the drawing mechanism 14 is configured as a winding shaft. A frame beam 4 is fixed to the upper end of the die frame 3, and a slide rail 5 is provided in the middle of the upper part of the frame beam 4. A slider 6 is mounted above the slide rail 5. A pair of die frames are symmetrically connected to both sides of the slider 6, which are respectively configured as a first die positioning frame 7-1 and a second die positioning frame 7-2. The slider 6 is connected to the pair of die frames via cantilever 6-1, and the lower parts of the two die frames are connected via a lower die beam 7-3, thus forming a stable frame structure.

[0026] On the lower side of the first mold positioning frame 7-1 and the second mold positioning frame 7-2, a pair of open molds 2 are respectively provided. Each pair of open molds 2 consists of a pair of mold pressure rollers corresponding to each other, wherein the lower mold pressure roller is set as the mold positioning roller 2-1, and the upper mold pressure roller is set as the upper mold pressure roller 2-2. The two work together to perform rolling processing on the wire.

[0027] Specifically, the upper pressure roller 2-2 of the first mold positioning frame 7-1 and the outer edge of the mold positioning roller 2-1 are respectively reserved with mold grooves. Roll forming molds 2-5 are respectively embedded in the mold grooves. When a pair of roll forming molds 2-5 are closed, they form a roll forming hole. Similarly, the upper pressure roller 2-2 of the second mold positioning frame 7-2 and the outer edge of the mold positioning roller 2-1 are also reserved with mold grooves. Roll forming molds 2-4 are respectively embedded in the mold grooves. When a pair of roll forming molds 2-4 are closed, they form a roll forming hole. The centers of the roll forming hole and the roll forming hole must be precisely aligned, and the roll forming molds 2-5 and 2-4 must be selected and set according to the diameter of the wire to be processed.

[0028] Example 2: Slide grooves are pre-reserved in the upper and lower parts of the first mold positioning frame 7-1 and the second mold positioning frame 7-2, respectively. An upper mold slider 10 is respectively installed in the upper slide groove. An elongated shaft hole is pre-reserved on one side of the upper mold pressure roller 2-2. The center of the upper mold pressure roller 2-2 is through-holed into this shaft hole via an upper pressure roller shaft 2-6. A bushing is provided between one end of the upper pressure roller shaft 2-6 and the upper mold pressure roller 2-2, and the other end is fixed by a locking nut 2-7. A mold opening screw 8 is connected to the upper end of the upper mold slider 10. A manual screw disc 9 is provided at the upper end of the screw, which drives the upper mold pressure roller 2-2 to open and close by operating the screw.

[0029] In the lower groove, a lower mold slider 11 is provided. Each lower mold slider 11 has a long, narrow shaft hole on one side corresponding to the mold positioning wheel 2-1. The center of the mold positioning wheel 2-1 is mounted here via a through-hole pressure roller shaft. One end of the shaft is fitted with a bushing between it and the mold positioning wheel 2-1, and the other end is secured with a locking nut 2-7. A positioning screw 12 is connected to the lower end of the lower mold slider 11, and a manual screw disc 9 is also provided at its lower end to drive the mold positioning wheel 2-1 to open and close. The mold opening screw 8 and the positioning screw 12 work together to achieve precise opening and closing of the opening mold 2.

[0030] Example 3: This example provides a method for using the above-mentioned device. During normal production of the copper wire drawing device 1, the wire passes sequentially through the wire lubrication device 13, a pair of open dies 2, and the conductor feeding mechanism 15, and is finally wound and fixed on the drawing mechanism 14. During production, the drawing mechanism 14 continuously draws the wire, causing it to move forward. The wire first undergoes surface lubrication through the lubrication device 13, and then is laterally inserted into the open die 2. Afterward, the die positioning wheel 2-1 and the die upper pressure wheel 2-2 are operated to merge, thereby squeezing the wire and closing the die opening. The wire is stretched under the action of the drawing force, first undergoes preliminary rolling forming through the rolling forming die 2-4, and then undergoes fine rolling through the rolling shaping die 2-5, finally being processed into a qualified finished wire product. The finished wire is guided by the conductor feeding mechanism 15 to the winding shaft of the drawing mechanism 14 for orderly wiring. Once the winding shaft is full, the drawing process of this batch of wire is completed.

[0031] Example 4: When it is necessary to change the wire diameter during production without disconnecting the wire for mold replacement, follow these steps: First, stop the copper wire drawing device 1 to bring the wire to a standstill. Then, operate the positioning screws 12 and the mold opening screws 8 on the first mold positioning frame 7-1 and the second mold positioning frame 7-2 respectively to fully open the pair of open molds 2, separating the rolling forming mold 2-5 from the rolling forming mold 2-4, leaving the molds in an open state. At this point, the rolling forming mold and rolling forming mold that match the target wire diameter can be replaced.

[0032] After the mold replacement is completed, the first mold positioning frame 7-1 and the second mold positioning frame 7-2 drive the pair of open molds 2 to move laterally until the center of their mold holes is aligned with the wire axis. Then, the positioning screw 12 and the mold opening screw 8 are operated respectively to dynamically clamp the pair of open molds 2. Simultaneously with this dynamic clamping, the drawing mechanism 14 is activated to draw the wire until the upper and lower molds are completely closed, thus completing the dynamic clamping and online replacement of the rolling forming mold 2-5 and the rolling die 2-4. The resulting wire has the new target diameter, and the device can then perform continuous production accordingly.

Claims

1. A variable diameter opening die device for photovoltaic copper wire drawing, comprising: a copper wire drawing device (1), an opening die (2), a die positioning wheel (2-1), a die upper pressure wheel (2-2), a die bushing (2-3), a roll forming die (2-4), a roll shaping die (2-5), an upper pressure wheel shaft (2-6), a locking nut (2-7), a die frame (3), a frame crossbeam (4), a slide rail (5), a slider (6), a cantilever (6-1), a die positioning frame (7), a first die positioning frame (7-1), a second die positioning frame (7-2), a die lower crossbeam (7-3), a die opening lead screw (8), a lead screw manual disc (9), an upper die slider (10), a lower die slider (11), a positioning lead screw (12), a wire lubrication device (13), a drawing mechanism (14), and a wire feeding mechanism (15); characterized in that: A wire lubrication device (13) is provided at the front end of the copper wire drawing device (1). The copper wire drawing device (1) is provided with a mold frame (3), a drawing mechanism (14), and a wire feeding mechanism (15) in the longitudinal direction from front to back. The upper end of the drawing mechanism (14) is provided with a winding shaft. A frame beam (4) is provided at the upper end of the mold frame (3). A slide rail (5) is provided in the middle of the upper part of the frame beam (4). A slider (6) is provided above the slide rail (5). A pair of mold frames are symmetrically provided on both sides of the slider (6). The pair of mold frames are respectively set as the first mold positioning frame (7-1) and the second mold positioning frame (7-2). A cantilever (6-1) is provided between both sides of the slider (6) and the pair of mold frames. A lower mold beam (7-3) is provided between the lower parts of the pair of mold frames. The pair of mold frames are combined with the slider (6), the pair of cantilever (6-1), and the lower mold beam (7-3) to form a frame frame. A pair of open molds (2) are respectively set on the lower side of the first mold positioning frame (7-1) and the second mold positioning frame (7-2). The pair of open molds (2) are respectively set as a pair of mold pressure rollers corresponding to the upper and lower parts. The lower mold pressure rollers are respectively set as mold positioning rollers (2-1), and the upper mold pressure rollers are respectively set as upper mold pressure rollers (2-2). The upper mold pressure rollers (2-2) and mold positioning rollers (2-1) are used for rolling wires in the open molds (2). The mold upper pressure roller (2-2) of the first mold positioning frame (7-1) and the outer edge of the mold positioning roller (2-1) are respectively reserved with mold grooves. Roll forming molds (2-5) are respectively set in the mold grooves, and a pair of roll forming molds (2-5) are respectively set with roll forming holes. The mold upper pressure roller (2-2) of the second mold positioning frame (7-2) and the outer edge of the mold positioning roller (2-1) are respectively reserved with mold grooves. Roll forming molds (2-4) are respectively set in the mold grooves, and a pair of roll forming molds (2-4) are respectively set with roll forming holes. The centers of the rolling forming hole and the rolling forming hole are set to correspond, and the rolling forming die (2-5) and the rolling forming die (2-4) are matched with different wire diameters.

2. The opening diameter changing die device for photovoltaic copper wire drawing according to claim 1; characterized in that: The upper and lower parts of the first mold positioning frame (7-1) and the second mold positioning frame (7-2) are respectively reserved with sliding grooves. The upper mold slider (10) is respectively set in the upper sliding groove. The upper mold slider (10) is reserved with a long strip-shaped shaft hole on one side of the upper mold pressure roller (2-2). The upper mold slider (10) is provided with an upper pressure roller shaft (2-6) through the center of the upper mold pressure roller (2-2). A bushing is set between one end of the upper pressure roller shaft (2-6) and the upper mold pressure roller (2-2). A bushing locking nut (2-7) is set at the other end of the upper pressure roller shaft (2-6). A mold opening screw (8) is set at the upper end of the upper mold slider (10). A screw manual disc (9) is set at the upper end of the mold opening screw (8). The opening screw (8) is used for the opening and closing movement of the upper mold pressure roller (2-2). The lower mold slider (11) is provided in the lower slide groove. The lower mold slider (11) and the mold positioning wheel (2-1) have a long strip-shaped shaft hole reserved on one side. The upper pressure wheel shaft (2-6) is provided through the center of the lower mold slider (11) and the mold positioning wheel (2-1). A bushing is provided between one end of the upper pressure wheel shaft (2-6) and the mold positioning wheel (2-1). A bushing locking nut (2-7) is provided at the other end of the upper pressure wheel shaft (2-6). A positioning screw (12) is provided at the lower end of the lower mold slider (11). A screw manual disc (9) is provided at the lower end of the positioning screw (12). The positioning screw (12) is used for the opening and closing movement of the mold positioning wheel (2-1). The positioning screw (12) and the opening screw (8) are used for the opening and closing of the opening mold (2).

3. A method of using an open-end variable diameter die device for photovoltaic copper wire drawing, as described in claim 1 or 2, characterized in that: During the production of copper wire drawing device (1), the wire is sequentially wound and fixed through wire lubrication device (13), a pair of open molds (2), wire feeding mechanism (15), and drawing mechanism (14); During the production process, the wire is pulled and run by the drawing mechanism (14), and the wire is lubricated by the wire lubrication device (13). After lubrication, the wire enters a pair of open molds (2). The mold positioning wheel (2-1) and the upper mold pressure wheel (2-2) of the pair of open molds (2) are in a separate open state. After the wire is inserted into the opening of the pair of open molds (2), the mold positioning wheel (2-1) and the upper mold pressure wheel (2-2) of the pair of open molds (2) merge and squeeze the wire, and the opening of the pair of open molds (2) closes. At the same time, the wire is pulled and stretched by the pulling mechanism (14), and then rolled and shaped by the rolling forming mold (2-5) and further stretched. After being rolled by the rolling forming mold (2-4), the wire is processed into a finished wire product. The finished wire product is wired to the winding shaft of the pulling mechanism (14) by the wire feeding mechanism (15). After the winding shaft is filled with finished wire, the wire pulling process is completed.

4. The method of using the open-diameter-changing die device for photovoltaic copper wire drawing according to claim 3, characterized in that: When the wire drawing process changes the diameter without breaking the wire to change the mold, the wire on the copper wire drawing device (1) is in the stopped state of drawing; the first mold positioning frame (7-1) and the second mold positioning frame (7-2) open the rolling forming mold (2-5) and the rolling forming mold (2-4) of a pair of open molds (2) respectively through the positioning screw (12) and the opening screw (8), that is, the pair of open molds (2) are in the open state, and the rolling forming mold (2-5) and the rolling forming mold (2-4) corresponding to the diameter of the wire being processed are replaced; After the mold is replaced, the first mold positioning frame (7-1) and the second mold positioning frame (7-2) drive a pair of open molds (2) to move laterally to the center of the wire axis and stop. The positioning screw (12) and the opening screw (8) respectively dynamically press the rolling forming mold (2-5) and the rolling forming mold (2-4) of the pair of open molds (2). At the same time as the dynamic pressing, the pulling mechanism (14) is started to pull the wire. When the rolling forming mold (2-5) and the rolling forming mold (2-4) are merged, the dynamic pressing of the rolling forming mold (2-5) and the rolling forming mold (2-4) is completed, and the online replacement of the rolling forming mold (2-5) and the rolling forming mold (2-4) corresponding to the diameter of the processed wire is completed. The processed wire is continuously produced after the diameter is changed.

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