Wire drawing device for ultra-high-strength stainless steel microwires for silk-screen printing of photovoltaic cells

Abstract

The utility model relates to a wire drawing device for ultra-high-strength stainless steel microwires for photovoltaic cell screen printing. The wire drawing device comprises a workbench, a plurality of wire drawing modules and a take-up mechanism, the wire drawing module comprises a first vertical plate, a plurality of mold supporting boxes and a plurality of traction cylinders; a long groove is formed in the head of the mold supporting box. A mold inserting groove is formed in the middle position of the long groove; a long handle of the mold supporting box is provided with an adjusting groove, and the upper surface of the mold supporting box is provided with a first adjusting hole and a second adjusting hole; the first adjusting hole penetrates through the upper surface and the lower surface of the long handle of the mold supporting box, a first internal thread is arranged on the inner wall, located below the adjusting groove, of the first adjusting hole, and a first adjusting bolt is arranged in the first adjusting hole. The second adjusting hole is located above the adjusting groove and communicated with the adjusting groove, a second internal thread is arranged on the inner wall of the second adjusting hole, and a second adjusting bolt is arranged in the second adjusting hole. According to the utility model, the position of the mold supporting box can be quickly adjusted, and the drawing operation of stainless steel microwires is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of metal material processing, in particular to a wire drawing device for ultra-high strength stainless steel micro-wires used in screen printing of photovoltaic cells. Background Art

[0002] The ultra-high strength stainless steel micro-wires used in screen printing of photovoltaic cells have the characteristics of high strength, high tension and high dimensional accuracy, and are very suitable for precision printing. Compared with wire meshes of other materials, the ultra-high strength stainless steel micro-wires can use finer wire diameters, which gives it greater advantages in plate making and enables the printing of higher quality patterns. At the same time, its high strength also ensures stability and durability during the printing process.

[0003] During the wire drawing process of the ultra-high strength stainless steel micro-wires used in screen printing of photovoltaic cells, direct drive wire arranging and drawing equipment is usually used. The axes of the wire drawing holes of each die need to be on the same straight line, so the accuracy requirements for the equipment are extremely high. The dies in the existing wire drawing equipment are difficult to adjust. Therefore, during the wire drawing process, the micro-wires often break.

[0004] Therefore, it is desirable to provide a wire drawing device for ultra-high strength stainless steel micro-wires used in screen printing of photovoltaic cells, which can solve the above technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a wire drawing device for ultra-high strength stainless steel micro-wires used in screen printing of photovoltaic cells, which can quickly adjust the position of the die support box and effectively ensure the wire drawing operation of the stainless steel micro-wires.

[0006] To achieve the purpose of the above utility model, a wire drawing device for ultra-high strength stainless steel micro-wires used in screen printing of photovoltaic cells is provided, which includes a workbench, a plurality of wire drawing modules and a wire collecting mechanism;

[0007] A plurality of the wire drawing modules are arranged side by side along the length direction of the upper surface of the workbench on the upper surface of the workbench;

[0008] The wire drawing module includes a first vertical plate, a plurality of die support boxes and a plurality of traction cylinders;

[0009] The first vertical plate is vertically fixed on the workbench;

[0010] The die support box is horizontally fixed on the front surface of the first vertical plate;

[0011] A wire drawing die is arranged in the die support box;

[0012] The wire drawing dies on a plurality of the wire drawing modules share the same axis;

[0013] The die support box is of a T-shaped structure;

[0014] The head of the mold support box is provided with a long groove along the wire drawing direction of the stainless steel micro wire, and both ends of the long groove are provided with guiding openings;

[0015] A mold insertion slot is arranged at the middle position of the long groove for inserting a wire drawing mold;

[0016] An adjustment groove is arranged on the long handle part of the mold support box. The adjustment groove penetrates through the left and right sides of the long handle of the mold support box. A first adjustment hole and a second adjustment hole are arranged at the position directly above the adjustment groove on the upper surface of the mold support box;

[0017] The first adjustment hole penetrates through the upper and lower surfaces of the long handle of the mold support box, and the inner wall of the first adjustment hole below the adjustment groove has a first internal thread. A first adjustment bolt is arranged in the first adjustment hole;

[0018] The second adjustment hole is located above the adjustment groove and is communicated with the adjustment groove. The inner wall of the second adjustment hole has a second internal thread. A second adjustment bolt is arranged in the second adjustment hole;

[0019] The traction cylinder is horizontally rotatably arranged on the front surface of the first vertical plate, and a first motor is arranged on the back surface of the first vertical plate. The first motor is used to drive the traction cylinder to rotate;

[0020] The wire winding mechanism includes a second vertical plate, a plurality of guiding rollers and a wire winding module;

[0021] The second vertical plate is fixed at the end of the workbench, and a plurality of the guiding rollers are horizontally rotatably arranged on the second vertical plate;

[0022] The wire winding module includes a base, a lead screw, a lead screw driving motor, a support frame, a wire winding motor and a spool support member;

[0023] The lead screw is horizontally rotatably arranged on the base;

[0024] The lead screw driving motor is used to drive the lead screw to rotate;

[0025] The support frame is threadedly sleeved on the lead screw; the wire winding motor is installed on the support frame, and the output shaft of the wire winding motor is kept horizontal;

[0026] The spool support member is fixed on the output shaft of the wire winding motor and shares the same axis with the output shaft of the wire winding motor.

[0027] Preferably, the adjustment groove is in a Z-shaped structure.

[0028] Preferably, a plurality of bamboo joint tubes are arranged on the vertical plate, and the number of the bamboo joint tubes is equal to the number of the mold support boxes;

[0029] The bamboo joint tube is filled with coolant, and the outlet of the bamboo joint tube is aligned with the wire drawing die in the die support box.

[0030] Furthermore, a receiving groove is provided in the workbench, and a number of oil leakage holes are provided directly below several wire drawing modules on the workbench. The oil leakage holes are communicated with the receiving groove.

[0031] Preferably, a transparent protective cover is hinged on each wire drawing module.

[0032] Preferably, among all the guide rollers, the end of the guide roller closest to the wire drawing module is connected to a second motor. The second motor is located on the back of the second vertical plate and is used to drive the connected guide roller to rotate.

[0033] Preferably, a number of slide rails are provided on the base. The slide rails penetrate through both ends of the base, and the support frame is slidably arranged on the slide rails.

[0034] Furthermore, machine tool bellows protective covers are sleeved on both sides of the support frame on the base, and the machine tool bellows protective covers cover the lead screw.

[0035] Preferably, a tension adjusting device is provided at the lower part of the front surface of the second vertical plate. The tension adjusting device includes a connecting rod, a pulley and a torsion spring;

[0036] One end of the connecting rod is rotatably arranged at the lower part of the front surface of the second vertical plate, and the torsion spring is sleeved at the connection between the connecting rod and the second vertical plate; the pulley is rotatably arranged at the end of the connecting rod far from the torsion spring.

[0037] Preferably, a positioning pin is fixed at the tail end of the die support box, and the die support box is inserted into the front surface of the first vertical plate through the positioning pin;

[0038] Both sides of the front end of the long handle of the die support box are threadedly connected with horizontal adjusting bolts.

[0039] The advantages of the wire drawing device for ultra-high strength stainless steel micro-wires used in photovoltaic cell screen printing of the present utility model compared with the prior art are as follows:

[0040] (1) The die support box can be quickly adjusted to ensure the smooth progress of the subsequent wire drawing operation of the stainless steel micro-wire;

[0041] (2) The die in the die support box can be cooled, and the coolant circulates continuously, further ensuring the smooth progress of the wire drawing operation of the stainless steel micro-wire;

[0042] (3) The structure is simple and easy to operate. Description of the Drawings

[0043] Figure 1 Structural schematic diagram of a wire drawing device for ultra-high strength stainless steel microfilaments used in screen printing of photovoltaic cells in this embodiment;

[0044] Figure 2 Structural schematic diagram of the wire drawing module in this embodiment;

[0045] Figure 3 Structural schematic diagram of the die support box in this embodiment;

[0046] Figure 4 Cross-sectional view of the die support box in this embodiment;

[0047] Figure 5 Structural schematic diagram of several guiding rollers connected to the second vertical plate in this embodiment;

[0048] Figure 6 Structural schematic diagram of the wire winding module in this embodiment. Detailed implementation manners

[0049] The following further describes the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0050] Embodiment

[0051] As Figure 1 shown, a wire drawing device for ultra-high strength stainless steel microfilaments used in screen printing of photovoltaic cells in this embodiment includes a workbench 1, several wire drawing modules 2 and a wire winding mechanism 3.

[0052] As Figure 1 and Figure 2 shown, several of the wire drawing modules 2 are arranged side by side along the length direction of the upper surface of the workbench 1 on the upper surface of the workbench 1; the wire drawing module 2 includes a first vertical plate 4, several die support boxes 5 and several traction cylinders 6; the first vertical plate 4 is vertically fixed on the workbench 1; the die support box 5 is horizontally fixed on the front surface of the first vertical plate 4; a wire drawing die 7 is arranged in the die support box 5; the wire drawing dies 7 on several of the wire drawing modules 2 share the same axis.

[0053] In this embodiment, as Figure 3 and Figure 4As shown in the figure, the mold support box 5 has a T-shaped structure; a long groove 8 is provided along the wire drawing direction of the stainless steel micro wire at the head of the mold support box 5, and guide ports 9 are provided at both ends of the long groove 8; a mold insertion slot 10 is provided at the middle position of the long groove 8 for inserting the wire drawing mold 7; an adjustment groove 11 is provided on the long handle part of the mold support box 5, and the adjustment groove 11 penetrates through the left and right sides of the long handle of the mold support box 5. A first adjustment hole 12 and a second adjustment hole 13 are provided on the upper surface of the mold support box 5 directly above the adjustment groove 11; the first adjustment hole 12 penetrates through the upper and lower surfaces of the long handle of the mold support box 5, and the inner wall of the first adjustment hole 12 below the adjustment groove 11 has a first internal thread, and a first adjustment bolt 14 is provided in the first adjustment hole 12; the second adjustment hole 13 is located above the adjustment groove 11 and is communicated with the adjustment groove 11. The inner wall of the second adjustment hole 13 has a second internal thread, and a second adjustment bolt 15 is provided in the second adjustment hole 13; with such a setting, during wire drawing, the central holes of all the wire drawing molds 7 need to be on the same axis. When the height of the wire drawing mold 7 needs to be adjusted upward, loosen the second adjustment bolt 15 and turn the first adjustment bolt 14 downward. The part of the long handle below the adjustment groove 11 will be slightly lifted. In this way, the staff can make fine adjustments; when the height of the wire drawing mold 7 needs to be adjusted upward, loosen the first adjustment bolt 14 and turn the second adjustment bolt 15 downward. The end of the second adjustment bolt 15 will push the long handle below the adjustment groove 11 to make a downward fine adjustment.

[0054] Further, in this embodiment, the adjustment groove 11 has a Z-shaped structure, effectively improving the elasticity of the long handle part of the mold support box 5.

[0055] The traction cylinder 6 is horizontally rotatably arranged on the front surface of the first vertical plate 4, and a first motor 16 is provided on the back surface of the first vertical plate 4, and the first motor 16 is used to drive the traction cylinder 6 to rotate.

[0056] In this embodiment, as Figure 1 shown, a plurality of bamboo joint pipes 17 are provided on the first vertical plate 4, and the number of the bamboo joint pipes 17 is equal to the number of the mold support boxes 5; the bamboo joint pipes 17 contain coolant, and the outlet of the bamboo joint pipe 17 is aligned with the wire drawing mold 7 in the mold support box 5 for cooling it.

[0057] In this embodiment, a receiving groove is provided in the workbench 1, and a plurality of oil leakage holes 18 are provided on the workbench 1 directly below the plurality of wire drawing modules 7, and the oil leakage holes 18 are communicated with the receiving groove; with such a setting, the coolant overflowing from the mold support box 5 can be recycled, and at the same time, the coolant in the mold support box 5 can be ensured to circulate to ensure the cooling effect.

[0058] In this embodiment, a transparent protective cover (not shown in the figure) is hinged on each wire drawing module 2 to prevent external foreign objects from damaging the stainless steel micro wire.

[0059] As Figure 5 shown, the wire winding mechanism 3 includes a second vertical plate 19, a plurality of guide rollers 20 and a wire winding module 21; the second vertical plate 19 is fixed at the end of the workbench 1, and a plurality of the guide rollers 20 are horizontally rotatably arranged on the second vertical plate 19. In this embodiment, among all the guide rollers 20, the end of the guide roller closest to the wire drawing module 2 is connected to a second motor 21, and the second motor 21 is located on the back of the second vertical plate 19 and is used to drive the connected guide roller to rotate, playing a role of auxiliary traction.

[0060] As Figure 6 shown, the wire winding module includes a base 22, a lead screw 23, a lead screw drive motor 24, a support frame 25, a wire winding motor 26 and a spool support 27; the lead screw 23 is horizontally rotatably arranged on the base 22; the lead screw drive motor 24 is used to drive the lead screw 23 to rotate; the support frame 25 is threadedly sleeved on the lead screw 23; the wire winding motor 26 is installed on the support frame 25, and the output shaft of the wire winding motor 26 is kept horizontal; the spool support 27 is fixed on the output shaft of the wire winding motor 26 and shares the same axis with the output shaft of the wire winding motor 26.

[0061] In this embodiment, a plurality of slide rails 28 are provided on the base 22, the slide rails 28 penetrate through both ends of the base 22, and the support frame 25 is slidably arranged on the slide rails 28, playing a role of limiting and guiding, ensuring the stability of the support frame 25 when moving on the lead screw 23 and avoiding its shaking.

[0062] In this embodiment, machine tool bellows protective covers 29 are sleeved on both sides of the support frame 25 on the base 22, and the machine tool bellows protective covers 29 cover the lead screw 23 and play a role of protecting the lead screw 23.

[0063] In this embodiment, as Figure 5As shown, a tension adjusting device is provided at the lower part of the front surface of the second vertical plate 19. The tension adjusting device includes a connecting rod 30, a pulley 31 and a torsion spring (not shown in the figure); one end of the connecting rod 30 is rotatably arranged at the lower part of the front surface of the second vertical plate 19, and the torsion spring is sleeved at the connection between the connecting rod 30 and the second vertical plate 19; the pulley 31 is rotatably arranged at one end of the connecting rod 30 far from the torsion spring; with such a setting, the stainless steel micro wire after passing through the guide roller is wound around the pulley 31 for several turns and then is drawn to the winding spool for wire winding. When the tension is too large, the connecting rod 30 is lifted by the stainless steel micro wire to play a role in adjusting the tension. When the tension is too small, under the action of the torsion spring, the connecting rod 30 will move downward to the equilibrium position.

[0064] In this embodiment, as Figure 3 shown, a positioning pin 32 is fixed at the tail end of the mold support box 5, and the mold support box 5 is inserted into the front surface of the first vertical plate 4 through the positioning pin 32; horizontal adjusting bolts 33 are threadedly connected to both sides of the front end of the long handle of the mold support box 5; with such a setting, when it is necessary to adjust the horizontal position of the mold support box 5, the staff can knock the corresponding horizontal adjusting bolt.

[0065] When the stainless steel micro wire is drawn, first, the height of the mold support box is adjusted by the first adjusting bolt 14 and the second adjusting bolt 15, and then by knocking the horizontal adjusting bolt 33, finally, the center holes of the wire drawing dies 7 in all the mold support boxes 5 are on the same axis. After the stainless steel micro wire is drawn, it is orderly wound around the winding spool under the action of the guide roller 20.

[0066] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A wire drawing device for ultra-high strength stainless steel micro-wires for screen printing of photovoltaic cells, characterized in that: It includes a workbench, several wire drawing modules and a wire taking-up mechanism; A plurality of the wire drawing modules are arranged side by side on the upper surface of the workbench along the length direction of the upper surface of the workbench; The wire drawing module comprises a first vertical plate, a plurality of die support boxes and a plurality of traction cylinders; The first vertical plate is vertically fixed on the workbench; The mold support box is horizontally fixed on the front side of the first vertical plate; A wire drawing die is arranged in the die support box; The wire drawing dies on the plurality of wire drawing modules share the same axis; The mold support box is in a T-shaped structure; The head of the mold support box is provided with a long groove along the drawing direction of the stainless steel micro-wire, and both ends of the long groove have guide openings; A die inserting groove is provided in the middle of the long groove for inserting the wire drawing die; The long handle of the mold support box is provided with an adjustment groove, the adjustment groove runs through the left and right sides of the long handle of the mold support box, and the upper surface of the mold support box is provided with a first adjustment hole and a second adjustment hole at a position directly above the adjustment groove; The first adjustment hole passes through the upper and lower surfaces of the long handle of the mold support box, and the inner wall of the first adjustment hole below the adjustment groove has a first internal thread, and a first adjustment bolt is arranged in the first adjustment hole; The second adjustment hole is located above the adjustment slot and is connected to the adjustment slot, the inner wall of the second adjustment hole has a second internal thread, and a second adjustment bolt is arranged in the second adjustment hole; The traction drum is horizontally rotatably arranged on the front side of the first vertical plate, and a first motor is arranged on the back side of the first vertical plate, and the first motor is used to drive the traction drum to rotate; The wire taking-up mechanism comprises a second vertical plate, a plurality of guide rollers and a wire taking-up module; The second vertical plate is fixed to the end of the workbench, and a plurality of guide rollers are horizontally rotatably arranged on the second vertical plate; The wire take-up module comprises a base, a lead screw, a lead screw drive motor, a support frame, a wire take-up motor and an I-shaped wheel support; The lead screw is horizontally rotatably arranged on the base; The screw drive motor is used to drive the screw to rotate; The support frame is threadedly sleeved on the lead screw; the wire take-up motor is installed on the support frame, and the output shaft of the wire take-up motor is kept horizontal; The I-shaped wheel support is fixed on the output shaft of the wire-taking motor and shares the same axis with the output shaft of the wire-taking motor.

2. A wire drawing device for ultra-high strength stainless steel micro-wires for screen printing of photovoltaic cells as claimed in claim 1, characterized in that: The adjusting groove is in a Z-shaped structure.

3. A wire drawing device for ultra-high strength stainless steel micro-wires for screen printing of photovoltaic cells as claimed in claim 1 or 2, characterized in that: The vertical plate is provided with a plurality of bamboo tubes, the number of which is equal to the number of the mold support boxes; The bamboo tube has cooling liquid in it, and the outlet of the bamboo tube is aligned with the wire drawing die in the die support box.

4. A wire drawing device for ultra-high strength stainless steel micro-wires for screen printing of photovoltaic cells as claimed in claim 3, characterized in that: A receiving groove is arranged in the workbench, and a plurality of oil leakage holes are arranged on the workbench directly below the plurality of wire drawing modules, and the oil leakage holes are communicated with the receiving groove.

5. A wire drawing device for ultra-high strength stainless steel micro-wires for screen printing of photovoltaic cells as claimed in claim 1, characterized in that: A transparent protective cover is hinged on each of the wire drawing modules.

6. A wire drawing device for ultra-high strength stainless steel micro-wires for screen printing of photovoltaic cells as claimed in claim 1, characterized in that: Among all the guide rollers, the end of the guide roller closest to the wire drawing module is connected to a second motor, which is located on the back side of the second vertical plate and is used to drive the connected guide roller to rotate.

7. A wire drawing device for ultra-high strength stainless steel micro-wires for screen printing of photovoltaic cells as claimed in claim 1, characterized in that: The base is provided with a plurality of slide rails, the slide rails penetrate through the two ends of the base, and the support frame is slidably arranged on the slide rails.

8. A wire drawing device for ultra-high strength stainless steel micro-wires for screen printing of photovoltaic cells as claimed in claim 7, characterized in that: Machine tool accordion protective covers are sleeved on both sides of the support frame on the base, and the machine tool accordion protective covers cover the lead screw.

9. A wire drawing device for ultra-high strength stainless steel micro-wires for screen printing of photovoltaic cells as claimed in claim 1, characterized in that: A tension adjusting device is provided at the lower front portion of the second vertical plate, and the tension adjusting device comprises a connecting rod, a pulley and a torsion spring; One end of the connecting rod is rotatably arranged on the lower front part of the second vertical plate, and the torsion spring is sleeved at the connection between the connecting rod and the second vertical plate; the pulley is rotatably arranged on one end of the connecting rod away from the torsion spring.

10. The ultra-high strength stainless steel micro-wire drawing device for photovoltaic cell screen printing as claimed in claim 1, characterized in that: A positioning pin is fixed at the tail end of the mold support box, and the mold support box is plugged into the front side of the first vertical plate through the positioning pin; Both sides of the front end of the long handle of the mold supporting box are threadedly connected with horizontal adjustment bolts.

Images