Knife and sword color sinking processing equipment and processing method thereof

Abstract

The invention provides knife and sword color sinking processing equipment which comprises an electrolytic tank, a first shielding plate and a second shielding plate are connected to the electrolytic tank through an adjusting assembly, a first fixing plate is fixedly arranged on one side of the top end in the electrolytic tank, and a second fixing plate is fixedly arranged on the other side of the top end in the electrolytic tank. And a cathode lead plate electrode is arranged on the fixed plate I in a penetrating manner. Compared with the prior art, the device has the following beneficial effects that the frosted layer is matched with the electric telescopic rod in the color sinking process to rub the surface of a machined part, so that the situation of uneven color sinking caused by excessive precipitation of metal ions on the surface of the sword can be avoided through the frosted layer; metal ions can be uniformly subjected to a reduction reaction in oxide film holes and precipitate in the oxide film holes, so that the purpose of uniform color deposition can be achieved, the designed clamping assembly is matched with the two-way clamping plate to clamp the machined parts, the multiple machined parts are clamped at a time, and the machining efficiency is guaranteed.

Description

Technical Field

[0001] The invention discloses a sword darkening processing device and a processing method thereof, belonging to the sword field. Background Art

[0002] Swords, one of China's traditional weapons, have developed to the present day and have not only become people's favorite sports equipment, but also as people's favorite handicrafts, which are treasured by people. Steel is the base material for making swords. Steel is a material of a certain shape, size and performance made of steel ingots, steel billets or steel through pressure processing. Most steel processing is done through pressure processing, which causes the processed steel (billets, ingots, etc.) to undergo plastic deformation. According to the different processing temperatures of steel, it can be divided into cold processing and hot processing. In the process of making swords, swords are usually treated with coloring for beauty. In actual use, the existing technology uses a motor to achieve the coloring operation, but the swords that have just completed electrolytic coloring will change color after a few minutes in the air or water, and the color often falls off. The uneven coloring affects the beauty of the swords. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a sword darkening processing equipment and a processing method thereof.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0005] A sword tinting processing equipment comprises an electrolytic cell, on which a first shielding plate and a second shielding plate are connected via an adjusting component, the first shielding plate and the second shielding plate, a fixing plate one is fixedly provided on one side of the top of the electrolytic cell, a fixing plate two is fixedly provided on the other side of the top of the electrolytic cell, a cathode lead plate electrode is penetrated through the fixing plate one, an anode calomel electrode is penetrated through the fixing plate two, limiting plates are fixedly provided on the tops of the cathode lead plate electrode and the anode calomel electrode, a fixing table is fixedly provided on the middle part of the top of the electrolytic cell via a bracket, a plurality of through openings are opened on the fixing table, a processing piece is penetrated through the through openings on the fixing table, a clamping component is fixedly provided on the fixing table, and electrical contacts are mounted on the bidirectional clamping plates on the clamping component.

[0006] Furthermore, the vertical length of the first shielding plate is smaller than the vertical length of the second shielding plate, the limiting plate and the top of the electrical contact are electrically connected with a terminal, and the number of the electrical contacts is the same as the number of the processed parts.

[0007] Furthermore, an insertion groove plate corresponding to the first shielding plate and the second shielding plate is fixed in the electrolytic cell, a sealing gasket made of rubber material is pasted on the inner side of the insertion groove plate, the number of the insertion groove plates is four, and two of the insertion groove plates are symmetrically arranged in a team.

[0008] Furthermore, the adjustment assembly includes a lap plate fixed on the top of the electrolytic cell, a drive motor is fixed on the lap plate, a double-axis screw is connected to the output bottom end of the drive motor, a lifting plate 1 is threadedly sleeved on the bottom end of the double-axis screw, a lifting plate 2 is threadedly sleeved on the top end of the double-axis screw, the lifting plate 1 is fixedly connected to the first shielding plate, and the lifting plate 2 is fixedly connected to the second shielding plate.

[0009] Furthermore, an L-shaped plate is fixed on the lap plate, a bearing fixed on the L-shaped plate is sleeved at the bottom of the double-axis screw rod, a traction rod passing through the lifting plate 2 and the lifting plate 1 is also fixed on the lap plate and the L-shaped plate, and a secondary sealing pad made of rubber is fixed at the bottom end of the first shielding plate and the second shielding plate.

[0010] Furthermore, the clamping assembly includes an auxiliary drive motor fixed on the fixed table, the output end of the auxiliary drive motor is connected to a rotating rod, a plurality of groups of double-axis threaded segments are engraved on the outer surface of the rotating rod, each of the double-axis threaded segments is sleeved with the bidirectional clamping plate, and the electrical contact is fixed on the inner side surface of one of the bidirectional clamping plates.

[0011] Furthermore, the other end of the rotating rod is sleeved with a secondary bearing, the secondary bearing is fixed on the top of the fixed platform, a secondary traction rod is fixed on the top of the fixed platform, and the secondary traction rod slides through the two-way clamp.

[0012] Furthermore, the processing parts are all provided with cleaning components, and the cleaning components include a square sleeve provided on the processing parts, a frosted layer is provided on the inner side of the square sleeve, and a motor frame is fixed on the top of the fixed platform, and a connecting component connected to the square sleeve is provided on the motor frame.

[0013] Furthermore, the connecting assembly includes an electric telescopic rod fixed to the motor frame, a connecting rod is fixedly provided at the output bottom end of the electric telescopic rod, the connecting rod slides through the fixed platform, and the bottom end of the connecting rod is fixedly connected to one of the square sleeves, the square sleeves are fixedly connected by a transverse rod, a discharge pipe with a valve is installed at the bottom end of the electrolytic cell, a drying box is fixedly provided on the fixed platform, an air inlet frame and an air outlet hood are provided on the drying box, an electric fan is installed in the air inlet frame, a plurality of air outlet hoses are provided on the air outlet hood, the air outlet hoses are fixedly passed through the fixed platform, the bottom end of the square sleeve is connected to an annular air outlet ring through a pipeline, the air outlet ring is evenly arranged with air outlet nozzles corresponding to the processed part, and the air outlet hose is connected to the pipeline.

[0014] Furthermore, a discharge pipe with a valve is installed at the bottom end of the electrolytic cell, a drying box is fixedly installed on the fixed platform, an air inlet frame and an air outlet hood are provided on the drying box, an electric fan is installed in the air inlet frame, a plurality of air outlet pipes are provided on the air outlet hood, the air outlet pipes are fixedly passed through the fixed platform, an air outlet ring is fixedly sleeved on the outer surface of the square sleeve, the air outlet pipe and the air outlet ring are connected by a vertical bellows, downwardly inclined air outlet nozzles are evenly provided on the inner side wall of the air outlet ring, an electric heating wire is arranged inside the drying box, embedding grooves are evenly opened on the frosted layer, and the air outlet nozzles are located in the embedding grooves.

[0015] A method for darkening a sword comprises the following steps:

[0016] Step 1: Pretreatment, hanging, sealing, degumming, organic scrubbing, chemical degreasing, hot water washing, cold water washing, water washing, electrochemical polishing and water washing to remove the dirt layer and oxide layer on the surface of the sword in sequence;

[0017] Step 2: Place the pretreated sword into an electrolytic device and connect it to the anode, the cathode lead plate electrode is connected to the cathode, and electrolytic activation treatment is performed in the electrolyte of the electrolytic device, the electrolyte is a 3-5% H2SO4 aqueous solution, the temperature is 80°, the electrolysis time is 15min, the current density is 7-9mA / dm2, and the voltage is a DC voltage of 20-25V;

[0018] Step 3: uniform activation treatment, rubbing the surface of the workpiece through the frosted layer to make the oxide film pores on the surface of the sword evenly distributed;

[0019] Step 4: color precipitation treatment, discharge the step 3, add electrolyte again, connect the workpiece to the cathode, connect the anode calomel electrode to the anode, the electrolyte is 14-22% CrO3 aqueous solution and 3-6% H2SO4, the temperature is 75°, the electrolysis time is 20min, the current density is 15-20mA / dm2, and the voltage is 20-25V DC voltage;

[0020] Step 5: rubbing the surface of the workpiece in step 4 with the frosted layer to uniformly reduce and precipitate the metal ions in the oxide film pores in step 3;

[0021] Step 6: drain the electrolyte in step 5, add a hardening solution, connect the workpiece in step 5 to the cathode, and connect the cathode lead plate electrode to the anode, and perform anti-drop treatment on the surface color of the workpiece, the electrolyte is a 15-20% CrO3 aqueous solution, the temperature is 75°, the electrolysis time is 15min, the current density is 70-75mA / dm2, and the voltage is a DC voltage of 20-25V;

[0022] Step 7: Finally, the sword is dried. The sword in step S6 is quickly dried with nitrogen and dried and solidified in a vacuum drying oven to complete the coloring operation.

[0023] Beneficial effects of the present invention:

[0024] During the coloring process, the frosted layer cooperates with the electric telescopic rod to rub the surface of the workpiece, so that the frosted layer can prevent excessive precipitation of metal ions on the surface of the sword and cause uneven coloring, and can allow the metal ions to complete the reduction reaction evenly in the pores of the oxide film and precipitate in the pores of the oxide film, thereby achieving the purpose of uniform coloring.

[0025] The workpiece is clamped by the designed clamping assembly in conjunction with the bidirectional clamp, and multiple workpieces can be clamped at one time to ensure processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a front view of a sword darkening processing device according to the present invention;

[0028] Figure 2 It is a schematic diagram of an electrolytic cell of a sword coloring processing equipment of the present invention;

[0029] Figure 3 It is a schematic diagram of an insert groove plate of a sword darkening processing device of the present invention;

[0030] Figure 4 It is a schematic diagram of a clamping assembly of a sword darkening processing device of the present invention;

[0031] Figure 5 A schematic diagram of a cleaning component of a sword coloring processing device according to the present invention;

[0032] Figure 6 It is a schematic diagram of a square sleeve of a sword darkening processing device of the present invention;

[0033] Figure 7 This is a schematic diagram of an air outlet ring of a sword coloring processing device of the present invention;

[0034] Figure 8 The present invention is a flow chart of a method for darkening a sword.

[0035] In the figure: 1, electrolytic cell; 2, first shielding plate; 3, second shielding plate; 4, fixing plate 1; 5, fixing plate 2; 6, cathode lead plate electrode; 7, anode calomel electrode; 8, limit plate; 9, fixing table; 10, through-hole; 11, workpiece; 12, two-way clamping plate; 13, electric contact; 14, lap plate; 15, driving motor; 16, double-axis screw rod; 17, lifting plate 1; 18, lifting plate 2; 19, L-shaped plate; 20, bearing; 21, traction rod; 22, auxiliary sealing gasket; 23. Auxiliary drive motor; 24. Rotating rod; 25. Auxiliary bearing; 26. Auxiliary traction rod; 27. Square sleeve; 28. Frosted layer; 29. ​​Motor frame; 30. Electric telescopic rod; 31. Connecting rod; 32. Transverse rod; 33. Insert groove plate; 34. Sealing pad; 35. Exhaust pipe; 36. Drying box; 37. Air inlet frame; 38. Air outlet hood; 39. Electric fan; 40. Air outlet pipe; 41. Air outlet ring; 42. Air outlet nozzle; 43. Vertical bellows; 44. Embedded groove. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-2 The present invention provides a technical solution: a sword color processing equipment, comprising an electrolytic cell 1, on which a first shielding plate 2 and a second shielding plate 3 are connected through an adjusting component, the first shielding plate 2 and the second shielding plate 3, a fixing plate 1 4 is fixedly arranged on one side of the top of the electrolytic cell 1, a fixing plate 2 5 is fixedly arranged on the other side of the top of the electrolytic cell 1, a cathode lead plate electrode 6 is penetrated through the fixing plate 1 4, an anode calomel electrode 7 is penetrated through the fixing plate 2 5, and a limiting plate 8 is fixedly arranged on the top of the cathode lead plate electrode 6 and the anode calomel electrode 7, a fixing platform 9 is fixedly arranged on the middle part of the top of the electrolytic cell 1 through a bracket, a plurality of through holes 10 are opened on the fixing platform 9, a processing piece 11 is penetrated through the through holes 10, a clamping component is fixedly arranged on the fixing platform 9, and an electric contact 13 is installed on the bidirectional clamping plate 12 on the clamping component.

[0038] See also Figure 1 and Figure 4The vertical length of the first shielding plate 2 is smaller than the vertical length of the second shielding plate 3, the limiting plate 8 and the top of the electrical contact 13 are electrically connected with terminal heads, the number of the electrical contacts 13 is the same as the number of the processed parts 11, the vertical length of the first shielding plate 2 is smaller than the vertical length of the second shielding plate 3, and the second shielding plate 3 with a longer vertical length can be better inserted into the corresponding insertion groove plate 33, so as to complete the partition of the internal space of the pool by the insertion groove plate 33 cooperating with the second shielding plate 3.

[0039] See also Figure 1-3 The adjusting assembly includes a lap plate 14 fixed on the top of the electrolytic cell 1, a driving motor 15 is fixed on the lap plate 14, a double-axis screw rod 16 is connected to the output bottom end of the driving motor 15, a lifting plate 17 is threadedly sleeved on the bottom end of the double-axis screw rod 16, a lifting plate 2 18 is threadedly sleeved on the top end of the double-axis screw rod 16, the lifting plate 17 is fixedly connected to the first shielding plate 2, and the lifting plate 2 18 is fixedly connected to the second shielding plate 3, an L-shaped plate 19 is fixedly provided on the lap plate 14, a bearing 20 fixed to the L-shaped plate 19 is sleeved at the bottom of the double-axis screw rod 16, and a bearing 20 that penetrates the lifting plate 17 is also fixedly provided on the lap plate 14 and the L-shaped plate 19. The lowering plate 18 and the traction rod 21 of the lifting plate 1 17, the bottom ends of the first shielding plate 2 and the second shielding plate 3 are fixed with a secondary sealing pad 22 made of rubber material, and the driving of the driving motor 15 drives the rotation of the double-axis screw 16, and finally drives the lifting plate 1 17 and the lifting plate 2 18 to move away from or towards each other, and finally the corresponding lifting plate 1 17 and lifting plate 2 18 are inserted into the insertion groove plate 33, and only one side of the insertion groove plate 33 will be inserted, and the lifting plates 1 17 and 18 on both sides will not be inserted into the insertion groove plate 33 at the same time, so as to partition the internal space of the pool. The secondary sealing pad 22 and the designed sealing pad ensure that the internal space partition is more sealed and the partition effect is better.

[0040] See also Figure 4-5The clamping assembly includes an auxiliary driving motor 23 fixed on the fixed platform 9, the output end of the auxiliary driving motor 23 is connected to a rotating rod 24, a plurality of groups of double-axis threaded segments are engraved on the outer surface of the rotating rod 24, each of the double-axis threaded segments is sleeved with the double-axis clamping plate 12, the electric contact 13 is fixed on the inner side of one of the double-axis clamping plates 12, the other end of the rotating rod 24 is sleeved with a secondary bearing 25, the secondary bearing 25 is fixed on the top of the fixed platform 9, a secondary traction rod 26 is fixed on the top of the fixed platform 9, the secondary traction rod 26 slides through the double-axis clamping plate 12, the auxiliary driving motor drives the rotating rod 24 to rotate, so that the double-axis clamping plate 12 moves relative to each other, and the double-axis clamping plate 12 and one of the inner electric contacts thereof clamp and fix the sword, thereby achieving the purpose of fixing the sword body, the electric contact can energize the sword, so that the sword body can perform electrolysis operation normally.

[0041] See also Figure 5-6 The processing parts 11 are all provided with cleaning components, and the cleaning components include a square sleeve 27 provided on the processing part 11, and a frosted layer 28 is provided on the inner side of the square sleeve 27. The frosted layer 28, a motor frame 29 is also fixedly provided on the top of the fixed platform 9, and a connecting component connected to the square sleeve 27 is provided on the motor frame 29, and the connecting component includes an electric telescopic rod 30 fixed on the motor frame 29, and a connecting rod 31 is fixedly provided at the output bottom end of the electric telescopic rod 30, and the connecting rod 31 slides through the fixed platform 9, and the bottom end of the connecting rod 31 is fixedly connected to one of the square sleeves 27, and the square sleeves 27 are fixedly connected by a transverse rod 32, and the square sleeves 27 are connected by the electric telescopic rod 30, and the square sleeves 27 are fixedly connected by the transverse rod 32, so that multiple square sleeves 27 are driven to rise and fall at one time to complete the surface friction of multiple swords.

[0042] See also Figure 5-7The bottom of the electrolytic cell 1 is provided with a discharge pipe 35 with a valve, a drying box 36 is fixedly provided on the fixed platform 9, an air inlet frame 37 and an air outlet cover 38 are provided on the drying box 36, an electric fan 39 is installed in the air inlet frame 37, a plurality of air outlet pipes 40 are provided on the air outlet cover 38, the air outlet pipes 40 are fixedly passed through the fixed platform 9, an air outlet ring 41 is fixedly provided on the outer surface of the square sleeve 27, the air outlet pipes 40 and the air outlet ring 41 are fixedly provided on the outer surface of the square sleeve 27, and the air outlet pipes 40 and the air outlet ring 41 are fixedly provided on the outer surface of the square sleeve 27. They are connected by a vertical bellows 43, and the inner wall of the air outlet ring 41 is evenly provided with air outlet nozzles 42 inclined downward. An electric heating wire is arranged inside the drying box 36, and embedding grooves 44 are evenly opened on the frosted layer 28. The air outlet nozzle 42 is located in the embedding groove 44. The electric heating wire inside the drying box 36 generates heat inside, and finally along the vertical bellows 43 cooperates with the electric fan 39 to blow the heat from the air outlet nozzle 42 to the workpiece to complete the drying of the sword.

[0043] A sword coloring processing device comprises the following steps:

[0044] Step 1: Pretreatment, hanging, sealing, degumming, organic scrubbing, chemical degreasing, hot water washing, cold water washing, water washing, electrochemical polishing and water washing to remove the dirt layer and oxide layer on the surface of the sword in sequence;

[0045] Step 2: Put the pretreated sword into the electrolysis equipment and connect it to the anode, the cathode lead plate electrode 6 is connected to the cathode, and electrolysis activation treatment is carried out in the electrolyte of the electrolysis equipment, the electrolyte is 3-5% H2SO4 aqueous solution, the temperature is 80°, the electrolysis time is 15min, the current density is 7-9mA / dm2, and the voltage is a DC voltage of 20-25V;

[0046] Step 3: Uniform activation treatment, rubbing the surface of the workpiece 11 through the frosted layer 28 to make the oxide film pores on the surface of the sword evenly distributed;

[0047] Step 4: color precipitation treatment, discharge the electrolyte in step 3, re-add the electrolyte, connect the workpiece 11 to the cathode, connect the anode calomel electrode 7 to the anode, the electrolyte is 14-22% CrO3 aqueous solution and 3-6% H2SO4, the temperature is 75°, the electrolysis time is 20min, the current density is 15-20mA / dm2, and the voltage is a DC voltage of 20-25V;

[0048] Step 5: rubbing the surface of the workpiece 11 in step 4 with the frosted layer 28 to uniformly reduce and precipitate the metal ions in the oxide film pores in step 3;

[0049] Step 6: The electrolyte in step 5 is discharged, and a hardening solution is added. The workpiece 11 in step 5 is connected to the cathode, and the cathode lead plate electrode 6 is connected to the anode. The surface color of the workpiece 11 is treated to prevent falling. The electrolyte is a 15-20% CrO3 aqueous solution, the temperature is 75°, the electrolysis time is 15 minutes, the current density is 70-75 mA / dm2, and the voltage is a DC voltage of 20-25 V;

[0050] Step 7: Finally, the sword is dried. The sword in step S6 is quickly dried with nitrogen and dried and solidified in a vacuum drying oven to complete the coloring operation.

[0051] During the specific operation, the second shielding plate 3 is first inserted into the corresponding groove plate 33, and the bottom end of the second shielding plate 3 is tightly fitted with the bottom of the pool, so that the solution between the cathode lead plate electrode 6 and the workpiece will not flow to the position of the anode calomel electrode 7. The workpiece 11 is connected to the anode, the cathode lead plate electrode 6 is connected to the cathode, and is placed in an electrolyte of H2SO4 aqueous solution to complete the activation operation, so that the surface of the sword is oxidized to form a transparent oxide film, and micropores are evenly distributed on the oxide film, so that the efficiency of coloring can be improved. In this process, the surface of the workpiece is rubbed with the frosted layer 28, so that an oxide film can be evenly generated on the surface of the sword, and then the first shielding plate 2 is inserted into the corresponding other group of insertion grooves. The groove plate 33 is used to prevent the solution between the anode calomel electrode 7 and the workpiece from flowing to the position of the cathode lead plate electrode 6. The workpiece is connected to the cathode, the anode calomel electrode is connected to the anode, and CrO3 and H2SO4 are added to complete the coloring operation. After the coloring is completed, the workpiece is processed in step six, and the CrO3 aqueous solution is added again, the sword is connected to the cathode, and the cathode lead plate electrode is connected to the anode, so that the color is not easy to fall off, and wiping is also required during the processing. The frosted layer can prevent the excessive precipitation of metal ions on the surface of the sword from causing uneven coloring, and can allow the metal ions to complete the reduction reaction evenly in the oxide film pores and precipitate in the oxide film pores, so that the purpose of uniform coloring can be achieved.

[0052] The second shielding plate 3 has a longer vertical length, so it is better to insert it into the corresponding insertion groove plate 33, and the insertion groove plate 33 cooperates with the second shielding plate 3 to partition the internal space of the pool. The driving of the driving motor 15 drives the rotation of the double-axis screw 16, and finally drives the lifting plate 17 and the lifting plate 2 18 to move away from or towards each other, and finally makes the corresponding lifting plate 17 and the lifting plate 2 18 inserted into the insertion groove plate 33, and only one side of the insertion groove plate 33 will be inserted, and the lifting plate 1 17 and the lifting plate 2 18 on both sides will not be inserted into the insertion groove plate 33 at the same time to partition the internal space of the pool. The secondary sealing gasket 2 2 and the designed sealing gasket ensure that the internal space partition is more sealed and the partition effect is better. The auxiliary drive motor drives the rotation of the rotating rod 24 to make the two-way clamping plate 12 move relative to each other, and the two-way clamping plate 12 and one of the inner electric contacts thereof clamp and fix the sword, thereby achieving the purpose of fixing the sword body. The electric contact can energize the sword, so that the sword body can perform electrolysis operation normally. The square sleeves 27 are connected by an electric telescopic rod 30, and the square sleeves 27 are fixedly connected by a transverse rod 32, so that multiple square sleeves 27 can be driven to rise and fall at one time to complete the surface friction of multiple swords.

[0053] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sword darkening processing equipment, characterized by: The invention comprises an electrolytic cell (1), wherein a first shielding plate (2) and a second shielding plate (3) are connected to the electrolytic cell (1) via an adjustment component, wherein the first shielding plate (2) and the second shielding plate (3) are fixedly provided with a first fixing plate (4) on one side of the top end of the electrolytic cell (1), and a second fixing plate (5) is fixedly provided on the other side of the top end of the electrolytic cell (1), wherein a cathode lead plate electrode (6) is penetrated through the first fixing plate (4), and an anode calomel electrode (7) is penetrated through the second fixing plate (5), Limiting plates (8) are fixedly provided on the tops of the cathode lead plate electrode (6) and the anode calomel electrode (7); a fixing platform (9) is fixedly provided in the middle of the top of the electrolytic cell (1) through a bracket; a plurality of through-holes (10) are provided on the fixing platform (9); a processing piece (11) is penetrated through the through-holes (10) on the fixing platform (9); a clamping assembly is fixedly provided on the fixing platform (9); and an electric contact (13) is installed on a bidirectional clamping plate (12) on the clamping assembly.

2. The sword darkening processing equipment according to claim 1, characterized in that: The vertical length of the first shielding plate (2) is smaller than the vertical length of the second shielding plate (3), the limiting plate (8) and the top of the electrical contact (13) are both electrically connected to a terminal, and the number of the electrical contacts (13) is the same as the number of the processed parts (11).

3. The sword darkening processing equipment according to claim 2, characterized in that: An insertion groove plate (33) corresponding to the first shielding plate (2) and the second shielding plate (3) is fixedly provided in the electrolytic cell (1), a sealing gasket (34) made of rubber material is adhered to the inner side of the insertion groove plate (33), the number of the insertion groove plates (33) is four, and two of the insertion groove plates (33) are symmetrically arranged in a team.

4. The sword darkening processing equipment according to claim 3 is characterized by: The adjustment assembly comprises a lap plate (14) fixed on the top of the electrolytic cell (1), a driving motor (15) being fixedly arranged on the lap plate (14), a double-axis screw rod (16) being connected to the output bottom end of the driving motor (15), a lifting plate 1 (17) being threadedly sleeved on the bottom end of the double-axis screw rod (16), a lifting plate 2 (18) being threadedly sleeved on the top end of the double-axis screw rod (16), the lifting plate 1 (17) being fixedly connected to the first shielding plate (2), and the lifting plate 2 (18) being fixedly connected to the second shielding plate (3).

5. The sword darkening processing equipment according to claim 4 is characterized by: An L-shaped plate (19) is fixedly provided on the lap plate (14); a bearing (20) fixed on the L-shaped plate (19) is sleeved on the bottom of the double-axis screw rod (16); a traction rod (21) penetrating the second lifting plate (18) and the first lifting plate (17) is also fixedly provided on the lap plate (14) and the L-shaped plate (19); and a secondary sealing pad (22) made of rubber is fixedly provided at the bottom ends of the first shielding plate (2) and the second shielding plate (3).

6. The sword darkening processing equipment according to claim 5, characterized in that: The clamping assembly comprises an auxiliary drive motor (23) fixed on the fixed platform (9); the output end of the auxiliary drive motor (23) is connected to a rotating rod (24); a plurality of groups of double-axis threaded segments are engraved on the outer surface of the rotating rod (24); each of the double-axis threaded segments is sleeved with the bidirectional clamping plate (12); and the electric contact (13) is fixed on the inner side surface of one of the bidirectional clamping plates (12).

7. The sword darkening processing equipment according to claim 6 is characterized by: The other end of the rotating rod (24) is sleeved with a secondary bearing (25), and the secondary bearing (25) is fixed on the top of the fixed platform (9). A secondary traction rod (26) is fixed on the top of the fixed platform (9), and the secondary traction rod (26) slides through the two-way clamping plate (12).

8. The sword darkening processing equipment according to claim 7 is characterized by: The processing piece (11) is sleeved with a cleaning component, the cleaning component comprises a square sleeve (27) sleeved on the processing piece (11), the inner side of the square sleeve (27) is provided with a frosted layer (28), the frosted layer (28), a motor frame (29) is fixedly provided on the top of the fixed platform (9), the motor frame (29) is provided with a connecting component connected to the square sleeve (27), the connecting component comprises an electric telescopic rod (30) fixed on the motor frame (29), a connecting rod (31) is fixedly provided at the output bottom end of the electric telescopic rod (30), the connecting rod (31) slides through the fixed platform (9), and the bottom end of the connecting rod (31) is fixedly connected to one of the square sleeves (27), and the square sleeves (27) are fixedly connected to each other via a transverse rod (32).

9. The sword darkening processing equipment according to claim 8, characterized in that: A discharge pipe (35) with a valve is installed at the bottom end of the electrolytic cell (1); a drying box (36) is fixedly installed on the fixed platform (9); an air inlet frame (37) and an air outlet hood (38) are installed on the drying box (36); an electric fan (39) is installed inside the air inlet frame (37); a plurality of air outlet pipes (40) are installed on the air outlet hood (38); the air outlet pipes (40) are fixedly passed through the fixed platform (9); an air outlet ring (41) is fixedly sleeved on the outer surface of the square sleeve (27); the air outlet pipe (40) and the air outlet ring (41) are connected by a vertical corrugated pipe (43); air outlet nozzles (42) inclined downward are evenly arranged on the inner side wall of the air outlet ring (41); an electric heating wire is arranged inside the drying box (36); an embedding groove (44) is evenly opened on the frosted layer (28); the air outlet nozzle (42) is located in the embedding groove (44).

10. A method for darkening a sword, characterized in that: The following steps are involved: Step 1: Pretreatment, hanging, sealing, degumming, organic scrubbing, chemical degreasing, hot water washing, cold water washing, water washing, electrochemical polishing and water washing to remove the dirt layer and oxide layer on the surface of the sword in sequence; Step 2: Place the pretreated sword into an electrolytic device and connect it to the anode, the cathode lead plate electrode (6) is connected to the cathode, and electrolytic activation treatment is performed in the electrolyte of the electrolytic device, the electrolyte is a 3-5% H2SO4 aqueous solution, the temperature is 80°, the electrolysis time is 15 minutes, the current density is 7-9 mA / dm2, and the voltage is a DC voltage of 20-25V; Step 3: uniform activation treatment, wherein the surface of the workpiece (11) is rubbed by the frosted layer (28) to make the oxide film pores on the surface of the sword evenly distributed; Step 4: color precipitation treatment, discharge the electrolyte in step 3, re-add the electrolyte, connect the workpiece (11) to the cathode, connect the anode calomel electrode (7) to the anode, the electrolyte is 14-22% CrO3 aqueous solution and 3-6% H2SO4, the temperature is 75°, the electrolysis time is 20min, the current density is 15-20mA / dm2, and the voltage is a DC voltage of 20-25V; Step 5: rubbing the surface of the workpiece (11) in step 4 using the frosted layer (28) to uniformly reduce and precipitate the metal ions in the pores of the oxide film in step 3; Step 6: drain the electrolyte in step 5, add a hardening solution, connect the workpiece (11) in step 5 to the cathode, and connect the cathode lead plate electrode (6) to the anode, and perform anti-drop treatment on the surface color of the workpiece (11), the electrolyte is a 15-20% CrO3 aqueous solution, the temperature is 75°, the electrolysis time is 15 minutes, the current density is 70-75 mA / dm2, and the voltage is a DC voltage of 20-25V; Step 7: Finally, the sword is dried. The sword in step S6 is quickly dried with nitrogen and dried and solidified in a vacuum drying oven to complete the coloring operation.

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