A PVD coating processing device and method for cemented carbide tool

Abstract

The present invention discloses a PVD coating processing device and method for cemented carbide cutting tools, which relate to the technical field of plating of metal materials, and include a base plate, a working motor for rotational driving is fixedly connected to the top of the base plate; both sides of the end of the working motor away from the base plate are rotatably connected to fixed brackets, one end of the fixed bracket passes through the top of the working motor and is threadedly connected to a fixing nut, and the end of the working motor away from the base plate is fixedly connected to a control motor; a lifting base plate is installed at the end of the working motor away from the base plate, and a working bracket for installing a cemented carbide cutting tool that needs to be processed is installed at the end of the lifting base plate away from the working motor; at the same time, when the present invention is in use, a built-in automatic fixing installation method is adopted, which can ensure that the installed cemented carbide cutting tool can remain stable during the actual coating and rotational movement processes.

Description

Technical Field

[0001] The invention relates to the technical field of plating of metal materials, in particular to a PVD coating processing device and a method for a cemented carbide tool. Background Art

[0002] PVD is a material transfer process in a physical state, which can transfer materials in the atomic or molecular state from one object to another, so that it has better performance. In the production process of cemented carbide tools, in order to improve the service life of cemented carbide tools, advanced metal materials are used to vacuum coat the surface of cemented carbide tools in a vacuum environment in PVD coating equipment, which can form a wear-resistant and corrosion-resistant film layer.

[0003] The prior art discloses a multi-arc ion plating device for PVD tool spray coating with application number CN202310905806.4. By coordinating the supporting force of the telescopic rod with the elastic force of the first spring, it is convenient to remove the insertion rod from the inside of the fixed column, and then remove the connecting assembly, the limiting assembly, the connecting frame, the positioning assembly and the carrying basket from the inside of the coating box, so as to facilitate the subsequent removal of the tools hanging on the hooks and organize them in order.

[0004] However, the existing technology has the problem of lack of guarantee of tool stability during use. During the PVD coating process, the carbide tools suspended in a movable manner may have shaking due to external influences, which may affect the coating effect. At the same time, there is a lack of corresponding cleaning solutions, and there is a lack of timely cleaning of dirt that may be attached to the carbide tools before and after treatment. Summary of the invention

[0005] In order to solve the deficiencies mentioned in the above background technology, the object of the present invention is to provide a cemented carbide tool PVD coating processing device and method.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A PVD coating processing device and method for a cemented carbide tool, comprising a base plate, a top end of which is fixedly connected to a working motor for rotational driving;

[0008] The working motor is rotatably connected to a fixing bracket on both sides of one end away from the base plate, and one end of the fixing bracket passing through the top of the working motor is threadedly connected to a fixing nut, and the working motor is fixedly connected to a control motor at one end away from the base plate;

[0009] A lifting bottom plate is installed at one end of the working motor away from the base plate, and a working hanger for installing the carbide tool to be processed is installed at one end of the lifting bottom plate away from the working motor;

[0010] The working hanger is a hexagonal prism, each side wall of which is fixedly connected to a working hanger rod, and one end of each working hanger rod away from the working hanger is fixedly connected to a hanging bottom plate;

[0011] A vacuum fan for assisting vacuuming is fixedly installed on the top of the base plate, a fan motor for controlling the vacuum fan is fixedly installed on the outside of the vacuum fan, and a cleaning base is fixedly installed on the top of the base plate.

[0012] Furthermore, a bottom sliding groove and a bottom bracket are fixedly connected to the top of the base plate, and the bottom bracket is fixedly installed on the inner side of the bottom sliding groove.

[0013] Furthermore, one end of the control motor away from the working motor is fixedly connected to a motor output rod, one end of the motor output rod away from the control motor is fixedly installed with a connecting bracket, one end of the connecting bracket away from the motor output rod is provided with a plurality of connecting side rods distributed in an array, and one end of the plurality of connecting side rods away from the connecting bracket is fixedly connected to the same connecting hanging ring.

[0014] Furthermore, the end of the lifting base plate away from the base plate is fixedly connected with a sealing groove, a lifting connecting rod is arranged outside the sealing groove, the lifting connecting rod is fixedly connected to the outside of the top end of the lifting base plate, a lifting and moving groove is arranged inside the lifting and moving groove, a lifting and moving frame is slidably connected inside the lifting and moving groove, a plurality of lifting wheel motors are fixedly connected inside the lifting and moving frame, an end of the lifting and moving frame away from the lifting base plate is fixedly connected with a lifting hanging rack, an end of the lifting hanging rack away from the lifting connecting rod is fixedly connected with a connecting hanging rod, an end of the connecting hanging rod close to the lifting base plate is fixedly connected with a processing furnace, the top end of the lifting base plate is rotatably connected with a rotating base plate, and the bottom end of the rotating base plate is fixedly connected to the top end of the connecting hanging ring;

[0015] The inner side walls of the processing furnace are respectively fixedly connected with a heating plate and a discharge substrate, and the inner bottom end of the processing furnace is fixedly connected with a vent.

[0016] Furthermore, the end of the suspension base plate away from the working suspension rod is fixedly connected to the suspension rod, the inner side of the suspension rod is slidably connected to a movable fixed push plate, the inner side of the suspension rod is fixedly connected to a connecting spring, and the end of the connecting spring away from the suspension rod is fixedly connected to a pressing plate.

[0017] Furthermore, the bottom end of the pressing plate is fixedly connected with a pushing tip plate, and the pushing tip plate is slidably installed on the top of the movable fixed pushing plate. The inner side of the working hanging rod is slidably connected with a power-on rod, and the end of the power-on rod away from the hanging rod is fixedly connected with a connecting ring, and the inner side of the connecting ring is fixedly connected with a connecting bracket, and an insulating baffle is installed on the outer side of the connecting bracket. The top of the insulating baffle is fixedly connected to the inner wall of the working hanging bracket, and the bottom end of the connecting bracket is fixedly connected with a connecting inner rod, and the connecting inner rod is fixedly installed on the inner side of the insulating baffle.

[0018] Furthermore, one end of the vacuum fan away from the base plate is fixedly connected to a fan inlet and outlet plate, a fan inlet and a fan outlet are provided at the top of the fan inlet and outlet plate, and the output end of the vacuum fan is fixedly connected to a fan connecting frame.

[0019] Furthermore, one end of the fan motor away from the base plate is fixedly connected to a motor connecting plate, one end of the fan motor close to the base plate is fixedly connected to a motor base, one end of the motor connecting plate away from the fan motor is fixedly connected to a motor control board, and one end of the fan motor close to the vacuum fan is fixedly connected to a motor output ring.

[0020] Furthermore, the cleaning base is threadedly connected with a rotating control screw, and one end of the rotating control screw away from the cleaning base is rotatably connected to a rotating push plate, and one end of the rotating push plate away from the cleaning base is fixedly connected to a fixing rod, and one end of the fixing rod away from the rotating push plate is fixedly connected to a movable connecting frame, a movable guide groove is opened at the top of the movable connecting frame, and a movable bracket is slidably connected to the top of the movable guide groove, and the top of the movable bracket is slidably connected to a movable cleaning rod, and a cleaning plate bracket is provided at the bottom of the rotating control screw, one end of the cleaning plate bracket is fixedly connected to an end of the cleaning base close to the fixed rod, and an end of the cleaning plate bracket away from the cleaning base is fixedly connected to the cleaning plate groove, and an end of the cleaning plate groove away from the base plate is fixedly connected to an arc working plate, and a wavy groove is opened at one end of the arc working plate away from the cleaning plate groove, and the cleaning plate groove is fixedly connected to an end of the cleaning plate bracket away from the cleaning base.

[0021] A method for processing a cemented carbide tool PVD coating comprises the following steps:

[0022] Step 1: First, install the carbide tool that needs to be processed on the outside of the hanging rod, let the pressing plate move to the bottom after installation, let the pressing plate press the connecting spring to the bottom, let the push tip plate move to the bottom, push the movable fixed push plate to both sides, move the movable fixed push plate to the outside, and support the hanging hole of the tool for fixing.

[0023] Step 2: After the installation in the previous step is completed, drive the lifting wheel motor to drive the internal wheel to move, so that the lifting and moving frame descends, driving the processing furnace at the bottom of the lifting rack, and allowing the processing furnace to be embedded in the sealing groove, so that a closed cabin is formed inside the processing furnace.

[0024] Step 3: After a closed cabin is formed inside the processing furnace, the fan motor is driven first to allow the fan inlet to draw air into the processing furnace, and the inside of the processing furnace is vacuumed through the vent to discharge the waste gas and impurities inside the processing furnace, preparing for PVD coating processing;

[0025] Step 4: After the inside of the processing furnace is evacuated, the heating plate inside the processing furnace is used to heat the inside of the processing furnace to increase the temperature inside the processing furnace and remove moisture and other impurities adhering to the tool, the work rack and the inside of the processing furnace;

[0026] Step 5: Power is supplied to the discharge substrate, and the arc discharge between the discharge substrate and the tool generates a high temperature to evaporate the material of the discharge substrate into plasma, and the elements to be coated are ionized. Since the ionized metal substrate ions are all positive ions, they are output to the tool through the connecting inner rod inside the working rack, making the tool negatively charged, so that the internal ionized elements impact the tool, and the elements are deposited on the outside of the tool, thereby forming a thin film to complete the PVD coating. In this process, the working motor is used to drive the rotating base plate to rotate, so that the coating of the cemented carbide tool is more comprehensive;

[0027] Step 6: After the coating in the previous step is completed, remove the processed tool, place the tool on the top of the bottom bracket, rotate the rotary control screw, push the rotary push plate to move, and drive the movable connecting frame to move with the fixed rod. The movable cleaning rod inside the fixed rod drives the wavy groove to move during the process, so that the movable cleaning rod at the top of the movable bracket sprays air to the tool at the bottom to achieve thorough cleaning of the tool.

[0028] Beneficial effects of the present invention:

[0029] 1. The present invention adopts a built-in automatic fixed installation method, which can ensure that the installed carbide tool can remain stable during the actual coating and rotation movement process, and the built-in rotation mechanism at the bottom can allow the suspended carbide tool to move more comprehensively in the furnace, which is convenient for the carbide tool body to be completely coated. Compared with the solutions in the prior art, it can keep the tool stable during the PVD coating process of advanced non-ferrous metal materials while making the coating more comprehensive;

[0030] 2. When the present invention is in use, the wave-shaped groove can be used to guide the mobile cleaning rod to perform jet cleaning on the tool. The cleaning process completely eliminates the contact between the tool and other mechanisms, preventing the tool from being contaminated before PVD coating and affecting the coating effect. A certain degree of cleaning can also be performed after coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 is a schematic diagram of a base plate of the present invention;

[0034] Figure 3 It is a schematic diagram of the working motor of the present invention;

[0035] Figure 4 This is a schematic diagram of the lifting base plate of the present invention;

[0036] Figure 5 It is a schematic diagram of the working rack of the present invention;

[0037] Figure 6 It is a schematic diagram of the internal structure of the sealing cover of the present invention;

[0038] Figure 7 yes Figure 6 The enlarged schematic diagram at A in the middle;

[0039] Figure 8 It is a schematic diagram of the energizing pole of the present invention;

[0040] Fig. 9 It is a schematic diagram of the vacuum blower of the present invention;

[0041] Fig.10 is a schematic diagram of a fan motor of the present invention;

[0042] Fig.11 yes Fig.10 Enlarged schematic diagram of point B in the middle.

[0043] In the figure: 1, base plate; 11, bottom sliding groove; 12, bottom bracket; 2, working motor; 21, fixed bracket; 22, fixed nut; 23, control motor; 24, motor output rod; 25, connecting fixed frame; 26, connecting side rod; 27, connecting hanging ring; 3, lifting bottom plate; 31, sealing groove; 32, lifting connecting rod; 33, lifting movable groove; 34, lifting movable frame; 35, lifting wheel motor; 36, lifting hanging rack; 37, connecting hanging rod; 38, processing furnace; 381, heating plate; 382, ​​discharge substrate; 383, vent; 39, rotating bottom plate; 4, working hanging rack; 41, working hanging rod; 42, hanging bottom plate; 43, hanging rod; 44, movable fixed push plate; 45, connecting spring; 46 , pressing plate; 47, pushing tip plate; 48, power rod; 49, connecting ring; 410, connecting bracket; 411, insulating baffle; 412, connecting inner rod; 5, vacuum fan; 51, fan inlet and outlet plate; 52, fan inlet; 53, fan outlet; 54, fan connecting frame; 6, fan motor; 61, motor connecting plate; 62, motor base; 63, motor control board; 64, motor output ring; 7, cleaning base; 71, rotating control screw; 72, rotating push plate; 73, fixed rod; 74, movable connecting frame; 75, movable guide groove; 76, movable bracket; 77, movable cleaning rod; 78, cleaning plate bracket; 79, cleaning plate groove; 710, arc working plate; 711, wavy groove. DETAILED DESCRIPTION

[0044] 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.

[0045] A PVD coating processing device and method for cemented carbide tools, which belong to the advanced nonferrous metal material classification in the new material industry. Plasma spraying is related to thermal spraying powder, and belongs to the plating type of metal materials in the chemical metallurgy category. It is the plating of one metal material on another metal material. Specifically in this case, one metal material used for plating refers to a substrate used for plating, and the other metal material to be plated refers to a cemented carbide tool. The plating in this case is performed by ion implantation, and the surface of the cemented carbide tool is plated by ion implantation.

[0046] like Figure 1 As shown, it includes a base plate 1, a working motor 2 is fixedly connected to the top of the base plate 1, a lifting base plate 3 is installed at the end of the working motor 2 away from the base plate 1, a working bracket 4 is installed at the end of the lifting base plate 3 away from the working motor 2, a vacuum fan 5 is fixedly installed on the top of the base plate 1, a fan motor 6 is fixedly installed on the outside of the vacuum fan 5, and a cleaning base 7 is fixedly installed on the top of the base plate 1.

[0047] The working bracket 4 is driven to rotate by the working motor 2 at the top of the base plate 1, and the vacuum blower 5 is driven by the blower motor 6 to evacuate the inside of the lifting base plate 3 to assist the PVD coating process.

[0048] like Figure 2 As shown, a bottom sliding groove 11 and a bottom bracket 12 are fixedly connected to the top of the base plate 1 , and the bottom bracket 12 is fixedly installed on the inner side of the bottom sliding groove 11 .

[0049] like Figure 3As shown, both sides of the end of the working motor 2 away from the base plate 1 are rotatably connected with fixed brackets 21, and one end of the fixed bracket 21 passing through the top of the working motor 2 is threadedly connected with a fixing nut 22, and the end of the working motor 2 away from the base plate 1 is fixedly connected with a control motor 23, and the end of the control motor 23 away from the working motor 2 is fixedly connected with a motor output rod 24, and the end of the motor output rod 24 away from the control motor 23 is fixedly installed with a connecting bracket 25, and the end of the connecting bracket 25 away from the motor output rod 24 is arrayed with a plurality of connecting side rods 26, and the ends of the plurality of connecting side rods 26 away from the connecting bracket 25 are fixedly connected with the same connecting hanging ring 27. The bottom end of the connecting hanging ring 27 is provided with a plurality of electrical through holes for controlling the potential, which are used to control the internal voltage during the PVD coating process.

[0050] The control motor 23 at the top of the working motor 2 drives the connecting fixing frame 25 to rotate, thereby rotating the connecting side rod 26 and cooperating with the mechanism driving the top to rotate. The fixing bracket 21 is used to cooperate with the fixing nut 22 to work, so that the fixing bracket 21 supports the lifting base plate 3 at the top.

[0051] like Figure 4 and 5 As shown, the end of the lifting base plate 3 away from the base plate 1 is fixedly connected with a sealing groove 31, and a lifting connecting rod 32 is arranged on the outside of the sealing groove 31, and the lifting connecting rod 32 is fixedly connected to the outside of the top of the lifting base plate 3, and a lifting moving groove 33 is provided on the inside of the lifting connecting rod 32, and a lifting moving frame 34 is slidably connected to the inside of the lifting moving groove 33, and a plurality of lifting wheel motors 35 are fixedly connected to the inside of the lifting moving frame 34, and a lifting hanging rack 36 is fixedly connected to the end of the lifting hanging rack 36 away from the lifting base plate 3, and a connecting hanging rod 37 is fixedly connected to the end of the connecting hanging rod 37 close to the lifting base plate 3, and a processing furnace 38 is fixedly connected to the end of the lifting base plate 3, and a rotating base plate 39 is rotatably connected to the top of the lifting base plate 3, and the bottom end of the rotating base plate 39 is fixedly connected to the top of the connecting hanging ring 27;

[0052] The inner wall of the processing furnace 38 is fixedly connected with a heating plate 381 and a discharge substrate 382, ​​and the inner bottom of the processing furnace 38 is fixedly connected with a vent 383. A connection socket for controlling the voltage of the discharge substrate 382 during the PVD coating processing is provided at the position of the discharge substrate 382 on the outer side of the processing furnace 38, which can directly control the voltage of the discharge substrate 382.

[0053] The sealing groove 31 at the top of the lifting bottom plate 3 cooperates with the processing furnace 38, so that when the processing furnace 38 and the sealing groove 31 are engaged, a closed space isolated from the outside can be formed inside the processing furnace 38, which is convenient for PVD coating processing. The lifting and moving groove 33 inside the lifting and moving connecting rod 32 is used to cooperate with the lifting and moving frame 34, and the lifting and moving wheel motor 35 is used to drive the wheel to lift and lower, so that the lifting and lowering hanging frame 36 drives the processing furnace 38 at the top to lift and lower through the connecting hanging rod 37.

[0054] The heating plate 381 is used to control the temperature inside the processing furnace 38 to facilitate the temperature control of PVD. The vent 383 is used to cooperate with the external vacuum fan 5 to evacuate air so that a vacuum is formed inside the processing furnace 38.

[0055] like Figure 6 , 7 As shown in 8, the working hanger 4 is a hexagonal prism, each side wall of which is fixedly connected to a working hanger rod 41, each working hanger rod 41 is fixedly connected to a suspension base plate 42 at one end away from the working hanger 4, and the suspension base plate 42 is fixedly connected to a suspension rod 43 at one end away from the working hanger rod 41. A movable fixed push plate 44 is slidably connected to the inner side of the suspension rod 43, a connecting spring 45 is fixedly connected to the inner side of the suspension rod 43, and a pressing plate 46 is fixedly connected to the end of the connecting spring 45 away from the suspension rod 43.

[0056] The bottom end of the pressing plate 46 is fixedly connected to a pushing tip plate 47, and the pushing tip plate 47 is slidably installed on the top of the movable fixed push plate 44. The inner side of the working hanging rod 41 is slidably connected to a power-on rod 48, and the end of the power-on rod 48 away from the hanging rod 43 is fixedly connected to a connecting ring 49, and the inner side of the connecting ring 49 is fixedly connected to a connecting bracket 410, and an insulating baffle 411 is installed on the outer side of the connecting bracket 410. The top end of the insulating baffle 411 is fixedly connected to the inner wall of the working hanging bracket 4, and the bottom end of the connecting bracket 410 is fixedly connected to a connecting inner rod 412, and the connecting inner rod 412 is fixedly installed on the inner side of the insulating baffle 411.

[0057] The tool to be processed is carried by the hanging rod 43 at the front end of the working hanger 4, and the tool outside the hanging rod 43 presses the pressing plate 46 under the action of gravity, so that the pressing plate 46 drives the pushing tip plate 47 to press down, and the movable fixed push plate 44 moves to both sides, so as to cooperate with the pressing plate 46 to fix the tool to be processed, so as to facilitate PVD coating processing.

[0058] The power rod 48 is used to output voltage to the tool by moving the fixed push plate 44 and the pressure plate 46 to make the tool energized. The connecting inner rod 412 outputs voltage to the power rod 48 through the connecting bracket 410 and the connecting ring 49, which is convenient for controlling the tool voltage and realizing voltage control inside the tool.

[0059] like Fig. 9As shown, one end of the vacuum fan 5 away from the base plate 1 is fixedly connected to a fan inlet and outlet plate 51 , a fan inlet 52 and a fan outlet 53 are provided at the top of the fan inlet and outlet plate 51 , and the output end of the vacuum fan 5 is fixedly connected to a fan connecting frame 54 .

[0060] Wind pressure is output to the interior of the processing furnace 38 through the fan inlet 52 at the top of the vacuum fan 5, so that the gas inside the processing furnace 38 is discharged and a vacuum is formed inside the processing furnace 38.

[0061] like Fig.10 As shown, one end of the fan motor 6 away from the base plate 1 is fixedly connected to a motor connecting plate 61, one end of the fan motor 6 close to the base plate 1 is fixedly connected to a motor base 62, one end of the motor connecting plate 61 away from the fan motor 6 is fixedly connected to a motor control board 63, and one end of the fan motor 6 close to the vacuum fan 5 is fixedly connected to a motor output ring 64.

[0062] The vacuum blower 5 is driven by the blower motor 6 so that the vacuum blower 5 can draw air through the blower inlet 52 and output it to the blower outlet 53 .

[0063] like Fig.11 As shown, a rotation control screw 71 is threadedly connected to the inner side of the cleaning base 7, and the end of the rotation control screw 71 away from the cleaning base 7 is rotatably connected to a rotation push plate 72, and the end of the rotation push plate 72 away from the cleaning base 7 is fixedly connected to a fixing rod 73, and the end of the fixing rod 73 away from the rotating push plate 72 is fixedly connected to a movable connecting frame 74, and a movable guide groove 75 is provided at the top of the movable connecting frame 74, and a movable guide groove 75 is slidably connected to the top of the movable guide groove 75. A movable bracket 76 is slidably connected to the top of the movable bracket 76. A movable cleaning rod 77 is slidably connected to the top of the movable bracket 76. A cleaning plate bracket 78 is provided at the bottom end of the rotation control screw 71, and one end of the cleaning plate bracket 78 is fixedly connected to the end of the cleaning base 7 close to the fixing rod 73, and the end of the cleaning plate bracket 78 away from the cleaning base 7 is fixedly connected to a cleaning plate groove 79, and the end of the cleaning plate groove 79 away from the base plate 1 is fixedly connected to an arc-shaped working plate 710, and a wavy groove 711 is provided at the end of the arc-shaped working plate 710 away from the cleaning plate groove 79, and the cleaning plate groove 79 is fixedly connected to the end of the cleaning plate bracket 78 away from the cleaning base 7. One end of the rotation control screw 71 close to the rotation push plate 72 is embedded in the rotation push plate 72 , and the rotation control screw 71 moves forward and backward to drive the rotation push plate 72 to move.

[0064] By introducing gas on the outside of the movable cleaning rod 77, the movable cleaning rod 77 can be output to the bottom end to clean the processed tool at the bottom. During the cleaning process, the rotating control screw 71 is used to rotate and push the rotating push plate 72 to move, thereby driving the position of the movable connecting frame 74 to move. During the movement of the movable connecting frame 74, the movable cleaning rod 77 is driven to move. The movable cleaning rod 77 is affected by the wavy groove 711 and moves inside the wavy groove 711, thereby enabling the movable cleaning rod 77 to clean various positions on the top of the tool that needs to be cleaned.

[0065] The plating material used is titanium. Plating the carbide tool with titanium metal can protect the internal carbide tool from wear and tear and improve its appearance.

[0066] A method for processing a cemented carbide tool PVD coating comprises the following steps:

[0067] Step 1: First, install the carbide tool that needs to be processed on the outside of the hanging rod 43, let the pressing plate 46 move to the bottom after installation, let the pressing plate 46 press the connecting spring 45 toward the bottom, let the pushing tip plate 47 move toward the bottom, push the movable fixed push plate 44 to both sides, and move the movable fixed push plate 44 to the outside to support the hanging hole of the tool for fixation.

[0068] Step 2: After the installation in the previous step is completed, drive the lifting wheel motor 35 to drive the internal wheel to move, so that the lifting and moving frame 34 descends, drives the processing furnace 38 at the bottom of the lifting rack 36, and allows the processing furnace 38 to be embedded in the sealing groove 31, so that a closed cabin is formed inside the processing furnace 38.

[0069] Step 3: After a closed cabin is formed inside the processing furnace 38, the fan motor 6 is driven to allow the fan inlet 52 to draw air into the processing furnace 38, and the processing furnace 38 is vacuumed through the vent 383 to discharge the waste gas and impurities inside the processing furnace 38, so as to prepare for PVD coating processing;

[0070] Step 4: After the processing furnace 38 is evacuated, the heating plate 381 inside the processing furnace 38 is used to heat the inside of the processing furnace 38 to increase the temperature inside the processing furnace 38 and remove moisture and other impurities adhering to the tool, the working rack 4 and the inner side of the processing furnace 38;

[0071] Step 5: Power is supplied to the discharge substrate 382, ​​and the arc discharge between the discharge substrate 382 and the tool generates a high temperature to evaporate the material of the discharge substrate 382 into plasma, and the elements to be coated are ionized. Since the ionized metal substrate ions are all positive ions, they are output to the tool through the connecting inner rod 412 inside the working rack 4, making the tool negatively charged, so that the internal ionized elements impact the tool, and the elements are deposited on the outside of the tool, thereby forming a thin film, and completing the PVD coating. In this process, the working motor 2 is used to drive the rotating base plate 39 to rotate, so that the coating of the cemented carbide tool is more comprehensive;

[0072] Step six: After the coating in the previous step is completed, remove the processed tool and place the tool on the top of the bottom bracket 12, rotate the rotating control screw 71, push the rotating push plate 72 to move, and drive the movable connecting frame 74 to move with the fixed rod 73. The movable cleaning rod 77 inside the fixed rod 73 drives the wavy groove 711 to move during the process, so that the movable cleaning rod 77 at the top of the movable bracket 76 sprays air toward the tool at the bottom to achieve thorough cleaning of the tool.

[0073] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A cemented carbide tool PVD coating processing device, comprising a base plate (1), characterized in that: A working motor (2) for rotational driving is fixedly connected to the top end of the base plate (1); The working motor (2) has one end away from the base plate (1) and is rotatably connected to fixed brackets (21) on both sides; one end of the fixed bracket (21) passes through the top of the working motor (2) and is threadedly connected to a fixing nut (22); and the end of the working motor (2) away from the base plate (1) is fixedly connected to a control motor (23); A lifting base plate (3) is installed at one end of the working motor (2) away from the base plate (1), and a working hanger (4) for mounting a hard alloy tool to be processed is installed at one end of the lifting base plate (3) away from the working motor (2); The working hanger (4) is a hexagonal prism, each side wall of which is fixedly connected to a working hanger rod (41), and one end of each working hanger rod (41) away from the working hanger (4) is fixedly connected to a hanging bottom plate (42); A vacuum fan (5) for assisting vacuuming is fixedly mounted on the top of the base plate (1); a fan motor (6) for controlling the vacuum fan (5) is fixedly mounted on the outside of the vacuum fan (5); and a cleaning base (7) is fixedly mounted on the top of the base plate (1); The cleaning base (7) is threadedly connected to a rotating control screw (71) on the inner side thereof; the end of the rotating control screw (71) away from the cleaning base (7) is rotatably connected to a rotating push plate (72); the end of the rotating push plate (72) away from the cleaning base (7) is fixedly connected to a fixing rod (73); the end of the fixing rod (73) away from the rotating push plate (72) is fixedly connected to a movable connecting frame (74); a movable guide groove (75) is provided at the top end of the movable connecting frame (74); a movable bracket (76) is slidably connected to the top end of the movable guide groove (75); a movable cleaning rod (77) is slidably connected to the top end of the movable cleaning rod (77) ), a cleaning plate bracket (78) is provided at the bottom end of the rotation control screw rod (71), one end of the cleaning plate bracket (78) is fixedly connected to one end of the cleaning base (7) close to the fixed rod (73), one end of the cleaning plate bracket (78) away from the cleaning base (7) is fixedly connected to a cleaning plate groove (79), one end of the cleaning plate groove (79) away from the base plate (1) is fixedly connected to an arc-shaped working plate (710), one end of the arc-shaped working plate (710) away from the cleaning plate groove (79) is provided with a wavy groove (711), and the cleaning plate groove (79) is fixedly connected to one end of the cleaning plate bracket (78) away from the cleaning base (7).

2. A cemented carbide tool PVD coating processing device according to claim 1, characterized in that: The top end of the base plate (1) is fixedly connected to a bottom sliding groove (11) and a bottom bracket (12), and the bottom bracket (12) is fixedly mounted on the inner side of the bottom sliding groove (11).

3. A cemented carbide tool PVD coating processing device according to claim 2, characterized in that: The end of the control motor (23) away from the working motor (2) is fixedly connected to a motor output rod (24), the end of the motor output rod (24) away from the control motor (23) is fixedly mounted with a connecting bracket (25), the end of the connecting bracket (25) away from the motor output rod (24) is arrayed with a plurality of connecting side rods (26), and the ends of the plurality of connecting side rods (26) away from the connecting bracket (25) are fixedly connected to the same connecting hanging ring (27).

4. A cemented carbide tool PVD coating processing device according to claim 3, characterized in that: The end of the lifting base plate (3) away from the base plate (1) is fixedly connected to a sealing groove (31), a lifting connecting rod (32) is arranged outside the sealing groove (31), the lifting connecting rod (32) is fixedly connected to the outside of the top end of the lifting base plate (3), a lifting movable groove (33) is provided inside the lifting connecting rod (32), a lifting movable frame (34) is slidably connected inside the lifting movable groove (33), a plurality of lifting wheel motors (35) are fixedly connected inside the lifting movable frame (34), an end of the lifting movable frame (34) away from the lifting base plate (3) is fixedly connected to a lifting hanging frame (36), an end of the lifting hanging frame (36) away from the lifting connecting rod (32) is fixedly connected to a connecting hanging rod (37), an end of the connecting hanging rod (37) close to the lifting base plate (3) is fixedly connected to a processing furnace (38), the top end of the lifting base plate (3) is rotatably connected to a rotating base plate (39), and the bottom end of the rotating base plate (39) is fixedly connected to the top end of the connecting hanging ring (27); The inner side walls of the processing furnace (38) are respectively fixedly connected with a heating plate (381) and a discharge substrate (382), and the inner bottom end of the processing furnace (38) is fixedly connected with a vent (383).

5. A cemented carbide tool PVD coating processing device according to claim 4, characterized in that: One end of the suspension base plate (42) away from the working suspension rod (41) is fixedly connected to a suspension rod (43); a movable fixed push plate (44) is slidably connected to the inner side of the suspension rod (43); a connecting spring (45) is fixedly connected to the inner side of the suspension rod (43); and one end of the connecting spring (45) away from the suspension rod (43) is fixedly connected to a pressing plate (46).

6. A cemented carbide tool PVD coating processing device according to claim 5, characterized in that: The bottom end of the pressing plate (46) is fixedly connected to a push tip plate (47), which is slidably mounted on the top end of the movable fixed push plate (44). The inner side of the working hanging rod (41) is slidably connected to a power supply rod (48), and one end of the power supply rod (48) away from the hanging rod (43) is fixedly connected to a connecting ring (49). The inner side of the connecting ring (49) is fixedly connected to a connecting bracket (410), and an insulating baffle (411) is mounted on the outer side of the connecting bracket (410). The top end of the insulating baffle (411) is fixedly connected to the inner wall of the working hanging bracket (4), and the bottom end of the connecting bracket (410) is fixedly connected to a connecting inner rod (412), and the connecting inner rod (412) is fixedly mounted on the inner side of the insulating baffle (411).

7. A cemented carbide tool PVD coating processing device according to claim 6, characterized in that: One end of the vacuum fan (5) away from the base plate (1) is fixedly connected to a fan inlet and outlet plate (51), a fan inlet (52) and a fan outlet (53) are provided at the top of the fan inlet and outlet plate (51), and the output end of the vacuum fan (5) is fixedly connected to a fan connecting frame (54).

8. The PVD coating processing device for cemented carbide tools according to claim 7, characterized in that: One end of the fan motor (6) away from the base plate (1) is fixedly connected to a motor connecting plate (61), one end of the fan motor (6) close to the base plate (1) is fixedly connected to a motor base (62), one end of the motor connecting plate (61) away from the fan motor (6) is fixedly connected to a motor control board (63), and one end of the fan motor (6) close to the vacuum fan (5) is fixedly connected to a motor output ring (64).

9. A method for processing PVD coating of a cemented carbide tool, performed by a cemented carbide tool PVD coating processing device as claimed in claim 8, characterized in that: The following steps are involved: Step 1: First, install the carbide tool to be processed on the outside of the hanging rod (43), move the pressing plate (46) toward the bottom after installation, press the connecting spring (45) toward the bottom, move the pushing plate (47) toward the bottom, push the movable fixed push plate (44) toward both sides, move the movable fixed push plate (44) toward the outside, and support the hanging hole of the tool for fixing; Step 2: After the installation in the previous step is completed, the lifting wheel motor (35) is driven to drive the internal wheel to move, so that the lifting and moving frame (34) is lowered, and the processing furnace (38) at the bottom end of the lifting and hanging frame (36) is driven, so that the processing furnace (38) is embedded in the sealing groove (31), so that the processing furnace (38) forms a closed cabin inside; Step 3: After a sealed cabin is formed inside the processing furnace (38), the fan motor (6) is driven to allow the fan inlet (52) to draw air into the processing furnace (38), and the processing furnace (38) is vacuumed through the vent (383) to discharge the waste gas and impurities inside the processing furnace (38), so as to prepare for PVD coating processing; Step 4: After the interior of the processing furnace (38) is evacuated, the interior of the processing furnace (38) is heated using a heating plate (381) inside the processing furnace (38) to increase the temperature inside the processing furnace (38) and remove moisture and impurities adhering to the tool, the working rack (4) and the inner side of the processing furnace (38); Step 5: Power is supplied to the discharge substrate (382), and arc discharge is generated between the discharge substrate (382) and the tool to generate a high temperature that causes the material of the discharge substrate (382) to evaporate into plasma, ionizing the elements to be coated. Since the ionized metal substrate ions are all positive ions, they are output to the tool through the connecting inner rod (412) inside the working bracket (4), making the tool negatively charged, so that the internal ionized elements impact the tool, and the elements are deposited on the outside of the tool, thereby forming a thin film, completing the PVD coating. In this process, the working motor (2) is used to drive the rotating base plate (39) to rotate, so that the coating of the cemented carbide tool is more comprehensive; Step 6: After the coating in the previous step is completed, remove the processed tool and place the tool on the top of the bottom bracket (12), rotate the rotating control screw (71), and push the rotating push plate (72) to move, so that the fixed rod (73) drives the movable connecting frame (74) to move, and the movable cleaning rod (77) inside the fixed rod (73) drives the wavy groove (711) to move during the process, so that the movable cleaning rod (77) at the top of the movable bracket (76) sprays air to the tool at the bottom, thereby achieving a thorough cleaning of the tool.

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