Graphite dip-coating processing device for hard alloy blank

Abstract

The invention relates to the field of hard alloy machining, in particular to a hard alloy blank graphite dip-coating machining device. The device comprises a base, the upper end of the base is fixedly connected with a U-shaped mounting frame and a liquid storage tank, the upper end of the liquid storage tank is fixedly connected with two supporting plates, the middles of the upper ends of the two supporting plates are fixedly connected with an L-shaped fixing plate, a dip-coating disc is arranged above the middle of the liquid storage tank, and the end, away from a rotating connector, of a liquid injection pipe is fixedly connected with a centrifugal pump. A liquid storage cavity is formed in the middle of the dip-coating disc, a plurality of dip-coating cavities surround the outer side of the liquid storage cavity at equal intervals, and liquid conveying channels are formed between the dip-coating cavities and the liquid storage cavity; according to the device, through cooperation of the centrifugal pump, the in-place sensor, the detection block and the electromagnetic valve, the dip-coating cavity is filled with liquid graphite, the blank is completely immersed, redundant liquid graphite is discharged after dip-coating of the blank is completed, and a structure with an adsorption effect is not arranged in the device, so that self-cleaning can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of cemented carbide processing, in particular to a graphite dipping processing device for cemented carbide blanks. Background Art

[0002] Cemented carbide is a metal material made of carbides of one or more refractory metals and a binder metal by powder metallurgy. Cemented carbide sintering is to press the powder into a blank, heat it to a certain temperature (sintering temperature) in a sintering furnace, and keep it for a certain time (holding time), and then cool it down to obtain the cemented carbide material with the required performance. Before sintering, a layer of liquid graphite needs to be applied on the outer surface of the cemented carbide to improve the high temperature resistance of the cemented carbide and protect it during sintering.

[0003] The Chinese invention patent, entitled "A cemented carbide blank graphite dipping processing device" (application number CN202210406475.5), discloses that the cemented carbide blank is dipped in liquid graphite by rotating the dipping processing disk and cooperating with the blank slot thereon to load the cemented carbide blank. At the same time, the discharging mechanism is used to automatically unload the dipped cemented carbide blank and enter the discharge channel to realize continuous dipping and discharge processing of the cemented carbide blank. The sponge disks on both sides are driven by adjusting the gears to rotate synchronously in the opposite direction to wipe and smooth the liquid graphite droplets attached to the cemented carbide blank, so that the surface of the cemented carbide blank entering the discharge channel will not be attached to the liquid. However, after the device stops being used for a period of time, the solid graphite formed after the water of the liquid graphite remaining in the sponge disk evaporates will fill the cavity of the sponge, reducing the adsorption effect of the sponge. The staff needs to remove the sponge disk and rinse it continuously to completely remove the liquid graphite adsorbed in the sponge disk. Only then can the adsorption effect of the sponge disk during subsequent use be guaranteed, and the cleaning efficiency is low. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a graphite dipping processing device for cemented carbide blanks, which solves the problem of low cleaning efficiency of liquid graphite after the device is not in use.

[0005] To achieve the above objectives, the present invention is implemented through the following technical scheme: a cemented carbide billet graphite dipping processing device comprises a base, the upper end of the base is fixedly connected with a U-shaped mounting frame and a liquid storage tank, and the mounting frame is located in the middle of one side of the liquid storage tank, the side end of the liquid storage tank is provided with a drain port, the upper end of the mounting frame is fixedly connected with a feeding mechanism, the upper end of the liquid storage tank is fixedly connected with two support plates, and the support plates are respectively located at the two side ends of the liquid storage tank, the middle parts of the upper ends of the two support plates are fixedly connected with an L-shaped fixing plate, and the fixing plates are respectively located at the opposite ends of the two support plates, a dipping pan is provided above the middle part of the liquid storage tank, and the fixing plates are respectively located at the two side ends of the dipping pan, the middle parts of the two side ends of the dipping pan are respectively fixedly connected with a rotating shaft and a connecting pipe, and the rotating shaft and the connecting pipe respectively penetrate the fixing plate and are rotatably connected to the fixing plate, and a rotating joint is installed at one end of the connecting pipe away from the dipping pan. The other end of the rotary joint is fixedly connected with an injection pipe, and the end of the injection pipe away from the rotary joint is fixedly connected with a centrifugal pump, and the injection pipe is communicated with the output end of the centrifugal pump, the centrifugal pump is fixedly connected to the upper end of the base, and the input end of the centrifugal pump is communicated with the liquid storage tank through the discharge port, the outer end of the liquid storage tank is slidably connected with a baffle, and one side end of the baffle is fixedly connected with the fixed plate, one end of the baffle extends to just below the dipping disc, the middle part of the dipping disc is provided with a liquid storage cavity, and the liquid storage cavity is communicated with the connecting pipe, a plurality of dipping cavities are equidistantly surrounded by the outer side of the liquid storage cavity, and the end of the dipping cavity away from the liquid storage cavity passes through the dipping disc, an infusion channel is provided between the dipping cavity and the liquid storage cavity, and the dipping cavity and the liquid storage cavity are communicated through the infusion channel, an electromagnetic valve is installed in the infusion channel, a motor is provided above the liquid storage tank, and the motor is fixedly connected to the side end of the fixed plate, and the output end of the motor is fixedly connected to the rotating shaft.

[0006] As an improvement of the present invention, a hydraulic sensor is installed in the liquid storage chamber to detect the pressure in the liquid storage chamber, so that the centrifugal pump can control the hydraulic pressure in the liquid storage chamber.

[0007] As a further improvement of the present invention, the side end of the baffle frame away from the dipping disc is fixedly connected to two in-place sensors, and the output ends of the in-place sensors pass through the baffle frame, the outer end of the dipping disc is equidistantly fixedly connected to detection blocks with the same number as the dipping chambers, and the detection blocks are respectively located in the middle of the outer sides of the dipping chambers, and the detection blocks are located at one end of the dipping disc facing the in-place sensors, and are used to detect the position of the dipping chamber and control the delivery of liquid graphite into the dipping chamber.

[0008] As a further improvement of the present invention, an annular slide groove is provided in the middle of the outer end of the dipping disc, and the width of the slide groove is the same as the width of the dipping chamber. A sealing block is fixedly connected to the middle of one end of the baffle frame facing the dipping disc, and the sealing block is located in the slide groove and is slidably connected to the side wall of the slide groove, so as to increase the sealing between the baffle frame and the dipping disc to prevent leakage of liquid graphite in the dipping chamber.

[0009] As a further improvement of the present invention, the retaining frame is provided with a plurality of filter holes at equal intervals, and the filter holes are located below the dipping plate, so as to drain the liquid graphite remaining on the surface of the blank after processing.

[0010] As a further improvement of the present invention, the feeding mechanism consists of a feeding tube, an electric push rod, a support frame and a pushing block. The feeding tube and the support frame are both L-shaped structures, and the open end of the bottom of the feeding tube faces the dipping disk and extends to the surface of the dipping disk. The support frame is fixedly connected to the lower end of the feeding tube, and the support frame is away from the dipping disk. The support frame is fixedly connected to the middle of the upper end of the mounting frame, the electric push rod is fixedly connected to the middle of one end of the support frame away from the feeding tube, and the piston rod of the electric push rod passes through the support frame, the pushing block is fixedly connected to the piston rod of the electric push rod, and the pushing block passes through the feeding tube and is slidably connected to the bottom of the feeding tube. When the detection block of a dipping chamber passes through the first in-place sensor, the first in-place sensor sends a signal to the electric push rod to push the blank into the empty dipping chamber, which is used to feed the blank into the dipping chamber of the dipping disk.

[0011] As a further improvement of the present invention, a baffle is fixedly connected to the upper end of the support plate, and the baffles are respectively located at both side ends of the fixed plate, for blocking the liquid graphite flowing down the surface of the blank to prevent the liquid graphite from flowing out of the device.

[0012] As a further improvement of the present invention, bolts are provided on the upper surface of the fixing plate, and the bolts penetrate the fixing plate and the supporting plate downward in sequence, and the fixing plate and the supporting plate are fixedly connected by the bolts.

[0013] In the present invention, through the cooperation of the centrifugal pump, the in-position sensor, the detection block and the solenoid valve, when the dipping chamber in the dipping disc is blocked and sealed by the baffle, the liquid graphite in the liquid storage chamber enters the closed dipping chamber through the infusion channel to dip the blank therein, and as the motor drives the dipping disc to continue to rotate, the baffle no longer seals the dipping chamber, and the blank and the liquid graphite leave the dipping chamber and fall on the bottom of the baffle, and the liquid graphite remaining on the surface of the blank is filtered through the filter hole and enters the liquid storage tank, and the centrifugal pump extracts the graphite liquid in the liquid storage tank to replenish the liquid storage chamber, and when cleaning the device, cleaning liquid is added to the liquid storage tank, and the above steps are repeated to allow the cleaning liquid to pass through the liquid storage chamber and be discharged through the dipping chamber, and the device is cleaned by repeated reciprocating multiple times. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of a graphite dipping processing device for cemented carbide blanks proposed by the present invention; Figure 2 A three-dimensional diagram of a fixed plate, a baffle and a dipping plate assembly of a cemented carbide blank graphite dipping processing device proposed by the present invention; Figure 3 A three-dimensional diagram of a liquid storage tank of a graphite dipping processing device for cemented carbide blanks proposed by the present invention; Figure 4 A three-dimensional diagram of a combination of a stop frame and an in-position sensor of a graphite dipping processing device for cemented carbide blanks proposed by the present invention; Figure 5 A cross-sectional view of a dipping plate of a graphite dipping processing device for cemented carbide blanks proposed by the present invention; Figure 6 A cross-sectional view of a feeding device of a cemented carbide blank graphite dipping processing device proposed by the present invention; Figure numerals: 1. feeding mechanism; 2. mounting frame; 3. base; 4. injection pipe; 5. centrifugal pump; 6. support plate; 7. liquid storage tank; 8. fixing plate; 9. baffle frame; 10. in-place sensor; 11. dip coating plate; 12. detection block; 13. motor; 14. bolt; 15. filter hole; 16. baffle plate; 17. drain port; 18. sealing block; 19. connecting pipe; 20. rotary joint; 21. dip coating chamber; 22. solenoid valve; 23. liquid storage chamber; 24. rotating shaft; 25. infusion channel; 26. slide; 27. feeding pipe; 28. electric push rod; 29. ​​support frame; 30. pushing block. DETAILED DESCRIPTION

[0015] 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.

[0016] The present invention provides several embodiments as follows: Example

[0017] like Figure 1-6As shown, a cemented carbide blank graphite dip coating processing device provided in the first embodiment includes a base 3, the upper end of the base 3 is fixedly connected with a U-shaped mounting frame 2 and a liquid storage tank 7, and the mounting frame 2 is located in the middle of one side of the liquid storage tank 7, and a liquid discharge port 17 is provided at the side end of the liquid storage tank 7, the upper end of the mounting frame 2 is fixedly connected with a feeding mechanism 1, the upper end of the liquid storage tank 7 is fixedly connected with two support plates 6, and the support plates 6 are respectively located at the two side ends of the liquid storage tank 7, and the upper middle ends of the two support plates 6 are fixedly connected with an L-shaped The fixing plate 8 is respectively located at the opposite ends of the two supporting plates 6, and the dipping pan 11 is provided above the middle of the liquid storage tank 7, and the fixing plate 8 is respectively located at the two side ends of the dipping pan 11, and the middle of the two side ends of the dipping pan 11 is respectively fixedly connected with a rotating shaft 24 and a connecting pipe 19, and the rotating shaft 24 and the connecting pipe 19 respectively penetrate the fixing plate 8 and are rotatably connected to the fixing plate 8, and a rotating joint 20 is installed at one end of the connecting pipe 19 away from the dipping pan 11, and the other end of the rotating joint 20 is fixedly connected with a liquid injection The centrifugal pump 5 is fixedly connected to the end of the injection pipe 4 away from the rotary joint 20, and the injection pipe 4 is connected to the output end of the centrifugal pump 5. The centrifugal pump 5 is fixedly connected to the upper end of the base 3, and the input end of the centrifugal pump 5 is connected to the liquid storage tank 7 through the discharge port 17. The outer end of the liquid storage tank 7 is slidably connected to a retaining frame 9, and one side end of the retaining frame 9 is fixedly connected to the fixed plate 8. One end of the retaining frame 9 extends to the bottom of the dip coating tray 11. The middle part of the dip coating tray 11 is provided with a liquid storage cavity 23, and the liquid storage cavity 23 is connected to the connecting plate 8. The connecting pipe 19 is connected, and a plurality of dipping chambers 21 are equidistantly surrounded on the outside of the liquid storage chamber 23, and one end of the dipping chamber 21 away from the liquid storage chamber 23 passes through the dipping plate 11, and an infusion channel 25 is provided between the dipping chamber 21 and the liquid storage chamber 23, and the dipping chamber 21 and the liquid storage chamber 23 are connected through the infusion channel 25, and an electromagnetic valve 22 is installed in the infusion channel 25, and a motor 13 is provided above the liquid storage tank 7, and the motor 13 is fixedly connected to the side end of the fixed plate 8, and the output end of the motor 13 is fixedly connected to the rotating shaft 24.

[0018] In the first embodiment, a hydraulic pressure sensor is installed in the liquid storage chamber.

[0019] In the first embodiment, two in-place sensors 10 are fixedly connected to the side end of the retaining frame 9 away from the dipping pan 11, and the output end of the in-place sensor 10 passes through the retaining frame 9, and the outer end of the dipping pan 11 is equidistantly fixedly connected with the same number of detection blocks 12 as the dipping chamber 21, and the detection blocks 12 are respectively located in the middle of the outer side of the dipping chamber 21, and the detection blocks 12 are located at the end of the dipping pan 11 facing the in-place sensor 10.

[0020] In the first embodiment, a plurality of filter holes 15 are evenly spaced in the retaining frame 9 , and the filter holes 15 are located below the dipping pan 11 .

[0021] In the first embodiment, the upper end of the support plate 6 is fixedly connected with a baffle 16 , and the baffle 16 is respectively located at both side ends of the fixed plate 8 .

[0022] In the first embodiment, bolts 14 are provided on the upper surface of the fixing plate 8 , and the bolts 14 penetrate the fixing plate 8 and the supporting plate 6 downward in sequence, and the fixing plate 8 and the supporting plate 6 are fixedly connected by the bolts 14 .

[0023] In the first embodiment, the liquid graphite in the liquid storage tank 7 is extracted by the centrifugal pump 5 and enters the liquid storage chamber through the injection pipe 4, the rotary joint 20 and the connecting pipe 19 in sequence, and the liquid storage chamber is completely filled. The motor 13 drives the dip coating plate 11 to rotate between the fixed plates 8. When the in-place sensor 10 cooperates with the detection block 12 and detects that the detection block 12 passes through the first in-place sensor 10, the retaining frame 9 seals the dip coating chamber 21 and opens the solenoid valve 22, so that the liquid graphite in the liquid storage chamber enters the dip coating chamber 21 through the infusion channel 25 as the centrifugal pump 5 works, and the liquid graphite in the liquid storage chamber enters the dip coating chamber 21. The billet is dip-coated, and after the detection block 12 is detected by the second in-place sensor 10, the solenoid valve 22 is closed. As the dipping disc 11 rotates, the dipping chamber 21 leaves the surface of the retaining frame 9, and the liquid graphite flows out of the dipping chamber 21 and flows into the liquid storage tank 7 through the filter hole 15. The billet falls on the surface of the retaining frame 9 and gradually leaves the dipping chamber 21. The residual liquid graphite on the surface of the billet is discharged from the filter hole 15, which can ensure that the billet is completely dip-coated everywhere, make the liquid graphite on the surface of the billet evenly distributed to ensure the dipping effect, and remove the residual liquid graphite in the dipping chamber 21. Example

[0024] The difference between the second embodiment and the first embodiment is that an annular slide groove 26 is provided in the middle of the outer end of the dipping disc 11, and the width of the slide groove 26 is the same as the width of the dipping chamber 21, and a sealing block 18 is fixedly connected to the middle of one end of the retaining frame 9 facing the dipping disc 11, and the sealing block 18 is located in the slide groove 26 and is slidably connected to the side wall of the slide groove 26.

[0025] In the second embodiment, the sealing block 18 cooperates with the slide groove 26 to improve the stability of the dipping plate 11 during rotation, and improves the sealing effect of the retaining frame 9 on the dipping chamber 21 . Example

[0026] The difference between the third embodiment and the first embodiment is that the feeding mechanism 1 is composed of a feeding tube 27, an electric push rod 28, a support frame 29 and a push block 30. The feeding tube 27 and the support frame 29 are both L-shaped structures, and the open end of the bottom of the feeding tube 27 faces the dipping disk 11 and extends to the surface of the dipping disk 11. The support frame 29 is fixedly connected to the lower end of the feeding tube 27, and the support frame 29 is away from the dipping disk 11. The support frame 29 is fixedly connected to the middle of the upper end of the mounting frame 2, the electric push rod 28 is fixedly connected to the middle of one end of the support frame 29 away from the feeding tube 27, and the piston rod of the electric push rod 28 passes through the support frame 29, the push block 30 is fixedly connected to the piston rod of the electric push rod 28, and the push block 30 passes through the feeding tube 27 and is slidably connected to the bottom of the feeding tube 27.

[0027] In the third embodiment, the feeding tube 27 is used to store the blanks to be processed, and the electric push rod 28 controls the pushing block 30 to push the blanks at the bottom of the feeding tube 27 out and send them into the dipping chamber 21, so that the device can automatically load the blanks.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A graphite dip coating processing device for cemented carbide blanks, comprising a base, characterized in that: The upper end of the base is fixedly connected with a U-shaped mounting frame and a liquid storage tank, the mounting frame is located in the middle of one side of the liquid storage tank, a liquid discharge port is provided at the side end of the liquid storage tank, a loading mechanism is fixedly connected with the upper end of the liquid storage tank, two supporting plates are fixedly connected with the upper end of the liquid storage tank, the two supporting plates are respectively located at the two side ends of the liquid storage tank, an L-shaped fixing plate is fixedly connected with the middle part of the upper ends of the two supporting plates, the fixing plates are respectively located at the opposite ends of the two supporting plates, a dipping pan is provided above the middle part of the liquid storage tank, and the fixing plates are respectively located at the The two side ends of the dipping pan and the middle of the two side ends of the dipping pan are respectively fixedly connected with a rotating shaft and a connecting pipe, the rotating shaft and the connecting pipe respectively penetrate the fixed plate and are rotatably connected to the fixed plate, a rotating joint is installed at one end of the connecting pipe away from the dipping pan, the other end of the rotating joint is fixedly connected with an injection pipe, the end of the injection pipe away from the rotating joint is fixedly connected with a centrifugal pump, the injection pipe is communicated with the output end of the centrifugal pump, the centrifugal pump is fixedly connected to the upper end of the base, and the input end of the centrifugal pump is communicated with the liquid storage tank through the discharge port.

2. A cemented carbide blank graphite dipping processing device according to claim 1, characterized in that: The outer end of the liquid storage tank is slidably connected with a baffle, one side end of the baffle is fixedly connected to the fixed plate, one end of the baffle extends to directly below the dipping pan, a liquid storage cavity is provided in the middle of the dipping pan, the liquid storage cavity is communicated with the connecting pipe, a plurality of dipping chambers are equidistantly surrounding the outer side of the liquid storage cavity, one end of the dipping chamber away from the liquid storage cavity passes through the dipping pan, an infusion channel is provided between the dipping chamber and the liquid storage cavity, the dipping chamber and the liquid storage cavity are communicated through the infusion channel, an electromagnetic valve is installed in the infusion channel, a motor is provided above the liquid storage tank, the motor is fixedly connected to the side end of the fixed plate, and the output end of the motor is fixedly connected to the rotating shaft.

3. The graphite dipping processing device for cemented carbide blank according to claim 2 is characterized in that: A hydraulic pressure sensor is installed in the liquid storage chamber.

4. A cemented carbide blank graphite dipping processing device according to claim 3, characterized in that: The side end of the retaining frame away from the dipping pan is fixedly connected to two in-place sensors, and the output ends of the in-place sensors pass through the retaining frame. The outer end of the dipping pan is equidistantly fixedly connected to detection blocks with the same number as the dipping chambers, and the detection blocks are respectively located in the middle of the outer side of the dipping chamber, and the detection blocks are located at one end of the dipping pan facing the in-place sensors.

5. The graphite dipping processing device for cemented carbide blank according to claim 2 is characterized in that: An annular slide groove is provided in the middle of the outer end of the dipping disc, and the width of the slide groove is the same as the width of the dipping chamber. A sealing block is fixedly connected to the middle of one end of the retaining frame toward the dipping disc, and the sealing block is located in the slide groove and is slidably connected to the side wall of the slide groove.

6. The graphite dipping processing device for cemented carbide blank according to claim 1 is characterized in that: A plurality of filter holes are equidistantly arranged in the retaining frame, and the filter holes are located below the dipping plate.

7. The graphite dipping processing device for cemented carbide blank according to claim 1 is characterized in that: The feeding mechanism consists of a feeding tube, an electric push rod, a support frame and a pushing block. The feeding tube and the support frame are both L-shaped structures. The open end of the bottom of the feeding tube faces the dipping pan and extends to the surface of the dipping pan. The support frame is fixedly connected to the lower end of the feeding tube, the support frame is away from the dipping pan, the support frame is fixedly connected to the middle of the upper end of the mounting frame, the electric push rod is fixedly connected to the middle of one end of the support frame away from the feeding tube, the piston rod of the electric push rod passes through the support frame, the pushing block is fixedly connected to the piston rod of the electric push rod, and the pushing block passes through the feeding tube and is slidably connected to the bottom of the feeding tube.

8. The graphite dipping processing device for cemented carbide blank according to claim 1 is characterized in that: The upper end of the support plate is fixedly connected with a baffle, and the baffles are respectively located at two side ends of the fixed plate.

9. The graphite dipping processing device for cemented carbide blank according to claim 1, characterized in that: Bolts are arranged on the upper surface of the fixing plate, and the bolts penetrate the fixing plate and the supporting plate in sequence downwards, and the fixing plate and the supporting plate are fixedly connected by the bolts.

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