Production process and processing device of coating-free non-stick pan

Abstract

The invention discloses a production process and a processing device of an uncoated non-stick pan. The processing device comprises a spray gun, a powder injection port, a water-cooling positive electrode and a negative electrode, the powder injection opening is connected with a conveying pipe used for providing spraying powder for the powder injection opening. The conveying pipe comprises a main input pipe used for conveying ceramic particles and an auxiliary input pipe used for conveying titanium particles. The main input pipe is provided with a first electrode used for energizing passing particles, and the auxiliary input pipe is provided with a second electrode which is used for energizing passing particles and is opposite to the first electrode in polarity. A plurality of turbulent flow pipes for further mixing passing particles are arranged in the conveying pipe; according to the coating-free non-stick pan, the surfaces of the ceramic particles are coated with the titanium particles, then the ceramic particles are integrally cladded to the pan bottom in a cladding mode, ceramic can be evenly and firmly attached to the pan base material through the cladding device, and the wear resistance and the non-stick effect of a pan are improved.

Description

Technical Field

[0001] The invention relates to the technical field of cookware production equipment, in particular to a production process and a processing device for a non-coating non-stick cookware. Background Art

[0002] Uncoated non-stick pans usually refer to kitchen pots without chemical coatings. With the development of technology, existing non-stick pans are usually made of titanium or titanium alloy bottoms. Their advantages are: titanium metal is light and strong, corrosion-resistant, uniform heat conduction: can provide better thermal conductivity, uniform heating, high temperature resistance: can withstand high temperature cooking, corrosion resistance: not easily corroded by acid and alkali substances and healthy and environmentally friendly: non-toxic, odorless, harmless to the human body, but compared with ceramics, the non-stick performance of titanium pans is average. Therefore, when titanium pans are manufactured, ceramic particles will be melted on the bottom of the pan to improve non-stick and wear resistance.

[0003] Plasma cladding technology is used when cladding ceramic particles. Plasma cladding technology heats the titanium substrate and ceramic powder through the high temperature generated by the plasma arc. The plasma arc can provide a very high temperature to melt the ceramic powder and the surface of the substrate. However, since ceramics and titanium are two completely different materials, when they are clad, the bonding effect between the ceramic and the titanium substrate is poor, resulting in uneven cladding of the ceramic particles. In addition, the heating temperature and temperature stability of the titanium substrate are extremely high during cladding, which increases the difficulty of the cladding process, and also increases the difficulty of manufacturing ceramic-titanium non-stick cookware. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a production process and processing device for an uncoated non-stick pan, which adopts a method of first coating titanium particles on the surface of ceramic particles and then spraying them onto a titanium substrate with a plasma spray gun for mixed cladding to improve the cladding effect of the ceramic particles.

[0005] To solve the above technical problems, the present invention solves the problems through the following technical solutions: a processing device for an uncoated non-stick pan, comprising a spray gun, a powder injection port, a water-cooled positive electrode and a cathode.

[0006] In the above technical solution, preferably, the powder injection port is connected to a delivery pipe for providing spray powder thereto; The delivery pipe includes a main input pipe for delivering ceramic particles and a secondary input pipe for delivering titanium particles; The main input pipe is provided with a first electrode for charging the particles passing through, and the auxiliary input pipe is provided with a second electrode for charging the particles passing through and having a polarity opposite to that of the first electrode, so that the titanium particles and the ceramic particles can be adsorbed to each other after being charged; The conveying pipe is provided with a plurality of turbulent pipes for further mixing the particles passing through.

[0007] In the above technical solution, preferably, an electrode plate for repelling titanium particles is provided on one side of the tube wall of the delivery tube close to the powder injection port, and a storage box for storing the repelled titanium particles is provided on the other side of the tube wall; The storage box is provided with a filter.

[0008] In the above technical solution, preferably, the storage box is provided with a detection switch for detecting the thickness of particles in the box, and the bottom of the storage box is provided with an adsorption tube; The storage box is rotatably arranged on the conveying tube by a rotating motor, the detection switch is electrically connected to the rotating motor, and a suction tube matching with the rotated adsorption tube is arranged on the outer side of the conveying tube.

[0009] In the above technical solution, preferably, a venturi tube is provided on the auxiliary input tube, and the venturi tube is connected to the suction tube for sucking the titanium particles in the storage box back into the auxiliary input tube.

[0010] In the above technical solution, preferably, the conveying tube is provided with an oscillation component for mixing and oscillating the particles in the tube body, and the oscillation component includes adjacent staggered spoiler tubes and a plurality of oscillation balls arranged on the spoiler tubes, and the spoiler tubes are reciprocatingly slidably arranged on the conveying tube.

[0011] In the above technical solution, preferably, a limit plate is provided at one end of the spoiler tube after passing through the delivery tube, and a driving hole is provided at the other end after passing through the delivery tube. A swing arm that cooperates with the driving hole is rotatably provided on the outer side of the delivery tube, and a driving groove that cooperates with the driving hole is provided on the swing arm.

[0012] In the above technical solution, preferably, a return spring is provided between the limit plate and the conveying pipe.

[0013] In the above technical solution, preferably, the swing arm is provided with a driving arm, the delivery pipe is provided with a driving pump matched with the driving arm, and the driving pump is provided with a driving wheel matched with the driving arm.

[0014] In the above technical solution, preferably, the driving pump is a hydraulic pump, and the water-cooling pipeline of the water-cooled positive electrode provides power for the driving pump after passing through the driving pump.

[0015] A production process for producing a non-coating non-stick pan by a processing device for a non-coating non-stick pan, the process is as follows: S1: The ceramic particles are charged after passing through the first electrode on the main input tube, and the titanium particles are charged with a charge of opposite polarity to the ceramic particles after passing through the second electrode on the secondary input tube; S2: The ceramic particles and the titanium particles are mixed after entering the conveying pipe, and the ceramic particles are adsorbed by the titanium particles, so that the ceramic particles are coated with the titanium particles; S3: The mixed particles pass through the spoiler tube and then the production line Venturi effect, so that the particles are further mixed, and the titanium particles coated on the surface of the ceramic particles are mixed more thoroughly; S4: When the mixed particles pass through the electrode plate, the titanium particles that are not adsorbed by the ceramic particles are repelled into the storage box because of the same charge polarity as the electrode plate, while the ceramic particles coated with the titanium particles enter the powder injection port and are sprayed by the spray gun to the surface of the workpiece for cladding. During cladding, the small-diameter titanium particles are first melted and adhered to the surface of the ceramic particles, and then contact with the workpiece to quickly fuse the melted titanium with the material on the surface of the workpiece, so that the ceramic particles are effectively adhered to the surface of the workpiece, making the ceramic particle cladding more uniform and firm; S5: The titanium particles entering the storage box in S4 are stored, and the thickness of the storage point is detected by the detection switch. When a certain thickness is reached, the detection switch triggers the rotation motor to rotate, driving the storage box to rotate, and then the adsorption tube is docked with the suction tube; S6: The suction tube uses the Venturi effect of the Venturi tube to draw the titanium particles in the storage box back into the auxiliary input tube and then enter the input tube to mix with the ceramic particles.

[0016] The beneficial effects of the present invention are as follows: the present invention provides a non-stick pan without coating, which is formed by coating titanium particles on the surface of ceramic particles and then melting the titanium particles onto the bottom of the pan as a whole; the melting device can make the ceramic adhere evenly and firmly to the pan substrate, thereby improving the wear resistance and non-stick effect of the pan; at the same time, through the turbulent oscillation effect when the ceramic particles and the titanium particles are mixed, the adsorption effect on the surface of the ceramic particles is greatly improved, so that the titanium particles coated on the surface of the ceramic particles are more uniform when sprayed by a spray gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the connection structure of the spray gun and the delivery pipe of the present invention.

[0018] Figure 2 It is a schematic diagram of the main structure of the conveying pipe of the present invention.

[0019] Figure 3 It is a schematic diagram of the enlarged structure of the storage box at position A in the present invention.

[0020] Figure 4 It is a front view structural diagram of the swing arm and the driving arm of the present invention.

[0021] Figure 5 It is a schematic diagram of the combined structure of the ceramic particles and titanium particles after adsorption and agglomeration of the present invention. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: See also Figure 1-Figure 5A processing device for an uncoated non-stick pan comprises a spray gun 1, a powder injection port 2, a water-cooled positive electrode 3 and a cathode 4. The water-cooled positive electrode 3 is cooled by a circulating liquid, and a driving pump 201 is arranged on its water-cooling pipeline, that is, the liquid in the water-cooling pipeline flows through the driving pump 201, and the output shaft of the driving pump 201 rotates according to the flow rate of the flowing liquid. When the injection speed of the spray gun 1 is increased, the circulation speed of the water-cooling pipeline is correspondingly increased. This is the existing technology of the plasma spray gun, so that the output shaft speed of the driving pump 201 is increased with the increase of the injection speed of the spray gun 1.

[0023] The powder injection port 2 is sprayed by the spray gun 1 after spraying the powder, and the powder is sprayed to the bottom of the pot to form a cladding of the powder and the pot. This is an existing cladding technology and will not be described in detail here. The powder injection port 2 is connected to a conveying pipe 5 for providing it with spray powder. Figure 1 As shown, the upper end of the delivery pipe 5 is connected to the powder injection port 2 through a pipeline, and the lower end includes a main input pipe 501 and an auxiliary input pipe 502. The main input pipe 501 is used to input ceramic powder particles, and the auxiliary input pipe 502 is used to transport titanium powder particles.

[0024] The main input pipe 501 is provided with a first electrode 503 for charging the particles passing therethrough. In the present embodiment, the first electrode 503 is a positive electrode, and the ceramic powder particles are given a positive charge after passing through the first electrode 503. The secondary input pipe 502 is provided with a second electrode 504 for charging the titanium powder particles passing therethrough. The second electrode 504 has a polarity opposite to that of the first electrode 503 and is a negative electrode. The titanium powder particles are given a negative charge after entering the electrode. The charging method of the above-mentioned electrodes is preferably electric field charging, and the charging voltage can be further determined according to specific factors such as the size of the particles, the dielectric constant, and the dielectric loss factor. This is a conventional method used by those skilled in the art and will not be elaborated on herein.

[0025] After being charged by the electric field, the ceramic powder particles and the titanium powder particles are respectively given positive charge and negative charge. Preferably, the diameter of the ceramic powder particles is larger than the diameter of the titanium powder particles, and the ratio can be set between 1:2-1:10. Then, after entering the upper part of the conveying pipe 5 and mixing, the ceramic powder particles and the titanium powder particles are adsorbed, so that the outside of the ceramic powder particles is coated with the titanium powder particles to form agglomerated particles. The agglomerated particles are as follows. Figure 5 shown.

[0026] In order to make the ceramic powder particles and the titanium powder particles agglomerate more fully, a disturbance flow tube 505 is provided in the conveying pipe 5, so that a disturbance flow effect is formed after the particles pass through the disturbance flow tube 505, so that the particles are further mixed and agglomerated, thereby improving the agglomeration effect; the agglomerated ceramic-titanium powder particles then enter the powder injection port 2 and are sprayed onto the surface of the workpiece by the spray gun 1, forming a whole with the workpiece. In this embodiment, the workpiece is a pot body or a substrate for manufacturing cookware.

[0027] In order to achieve a better agglomeration and mixing effect of the ceramic powder particles and the titanium powder particles after passing through the spoiler tube 505, an oscillation component 6 is arranged in the conveying tube 5 in this embodiment, and the oscillation component 6 includes adjacent staggered spoiler tubes 505 and a plurality of oscillation balls 601 arranged on the spoiler tubes 505. In this embodiment, two adjacent spoiler tubes 505 are taken as an example, and two oscillation balls 601 are arranged on each spoiler tube 505, and the oscillation balls 601 are hollow spheres, and the spoiler tubes 505 are reciprocatingly slid on the conveying tube 5; when the staggered spoiler tubes 505 slide back and forth in an staggered manner, the oscillation balls 601 thereon can be brought into contact and collide, thereby forming an oscillation area in the space around the spheres. At this time, the ceramic powder particles and the titanium powder particles are not only disturbed by the spoiler tubes 505 after passing through the oscillation area, but also the collision and adsorption between the particles are intensified due to the oscillation, thereby greatly improving the agglomeration effect between the particles.

[0028] To achieve the reciprocating staggered sliding of adjacent spoiler tubes 505, as Figure 2 As shown, in this embodiment, a limit plate 602 is provided after the left end of the spoiler tube 505 is penetrated through the wall of the delivery tube 5, a return spring 606 is provided between the limit plate 602 and the outer wall of the delivery tube 5, the return spring 606 is sleeved on the spoiler tube 505 and the two ends are respectively connected to the limit plate 602 and the wall of the delivery tube 5, and a driving hole 603 is provided after the right end of the bypass tube 505 is penetrated through the delivery tube 5, a swing arm 604 matching the driving hole 603 is rotatably provided on the right outer wall of the delivery tube 5, and a driving groove 605 matching the driving hole 603 at the right end of the adjacent spoiler tube 505 is symmetrically provided on the swing arm 604; the driving groove 605 is an arc-shaped long groove, and the driving hole 603 is slidably arranged in the driving groove 605 through a pin shaft.

[0029] The swing arm 604 is provided with a rotating fulcrum in the middle, and the fulcrum is rotatably arranged on the outer wall bracket of the conveying pipe 5; the swing arm 604 is provided with a driving arm 607, and one side of the conveying pipe 5 is provided with a driving pump 201 matched with the driving arm 607. Specifically, the driving pump 201 is provided with a driving wheel 202 matched with the driving arm 607, and the driving wheel 202 is provided with a convex rod. Figure 2After rotating clockwise in the direction shown, the convex rod can contact the driving arm 607, thereby forcing the driving arm 607 to drive the swing arm 604 to rotate around the fulcrum, so that the driving slot 605 drives the driving hole 603 to slide horizontally, thereby realizing the sliding of the spoiler tube 505. When the convex rod is disengaged from the driving arm 607, the spoiler tube 505 slides in the left and right directions of the reset spring 606 to achieve reset.

[0030] In this embodiment, in order to collect titanium powder particles that have not been agglomerated by ceramic powder particles, an electrode plate 506 for repelling titanium particles is provided on the tube wall of the conveying tube 5 near the powder injection port 2. The motor plate 506 is a negative electrode plate in this embodiment, so that the negatively charged titanium powder particles can be repelled to the other side. Therefore, in this embodiment, a storage box 507 for storing the repelled titanium particles is provided on the other side of the tube wall; a filter screen 508 is provided on the storage box 507 near the inner side of the conveying tube 5.

[0031] The storage box 507 is provided with a detection switch 509 for detecting the thickness of the accumulated particles in the storage box. The detection switch 509 is a thickness detection switch, and a photosensitive switch can also be used, that is, the switch is triggered when it is covered by some dust. The specific configuration can be adaptively adjusted according to corresponding parameters.

[0032] like Figure 3 As shown, the bottom of the storage box 507 is provided with an adsorption tube 510; the upper end of the storage box 507 is rotated on the conveying tube 5 by a rotating motor, and the detection switch 509 is electrically connected to the rotating motor. Initially, the storage box 507 is placed in the conveying tube 5 to form a whole with the conveying tube 5. When the accumulated powder in the storage box 507 reaches a certain amount, the detection switch 509 triggers the rotating motor to start, and the storage box 507 is moved along the conveying tube 5. Figure 3 The device is rotated clockwise in the direction shown by a certain angle so that the adsorption tube 510 at the bottom of the storage box 507 is placed outside the left side of the delivery tube 5; a suction tube 511 is provided on the outside of the delivery tube 5 to match the rotated adsorption tube 510; a Venturi tube 512 is provided on the auxiliary input tube 502, and the Venturi tube 512 is connected to the suction tube 511, which is used to draw the titanium particles in the storage box 507 back into the auxiliary input tube 502, that is, the titanium particles in the storage box 507 are drawn back into the auxiliary input tube 502 through the Venturi effect of the Venturi tube 512, and then enter the input tube 5 to mix with the ceramic particles.

[0033] In this embodiment, the rotating motor can be a servo motor or a stepper motor, which can be connected to the control system of the plasma cladding device. In addition, the remaining electrical components in the present invention can be connected to the control system to achieve automatic control of the entire machine.

[0034] The production process of producing an uncoated non-stick pan using the processing device of the uncoated non-stick pan as described above is as follows: S1: The ceramic particles are charged after passing through the first electrode 503 on the main input pipe 501, and the titanium particles are charged with a charge of opposite polarity to the ceramic particles after passing through the second electrode 504 on the auxiliary input pipe 502; S2: The ceramic particles and the titanium particles are mixed after entering the conveying pipe 5, and the ceramic particles are adsorbed by the titanium particles so that the ceramic particles are coated with the titanium particles; S3: The mixed particles pass through the spoiler tube 505 and then produce the Venturi effect of the production line, so that the particles are further mixed, and the titanium particles coated on the surface of the ceramic particles are mixed more thoroughly; S4: When the ceramic particles and the titanium particles pass through the spoiler tube 505, the spoiler tube 505 is driven by the driving pump 201 to swing the swing arm 604, so that the adjacent spoiler tubes 505 slide back and forth in an interlaced manner. When sliding in an interlaced manner, the oscillating balls 601 on the spoiler tubes 505 collide to form an oscillation area, so that the particles further oscillate, collide and agglomerate after passing through, thereby improving the agglomeration effect between the particles; S5: When the mixed particles pass through the electrode plate 506, the titanium particles that are not adsorbed by the ceramic particles are repelled into the storage box 507 because of the same polarity as the electrode plate 506 due to the charge, while the ceramic particles coated with the titanium particles enter the powder injection port 2 and are sprayed by the spray gun 1 to the surface of the workpiece for cladding. During cladding, the small-diameter titanium particles are first melted and adhered to the surface of the ceramic particles, and then contact with the workpiece to make the melted titanium and the material on the surface of the workpiece quickly merge, so that the ceramic particles are effectively adhered to the surface of the workpiece, making the ceramic particle cladding more uniform and firm; S6: The titanium particles entering the storage box 507 in S5 are stored, and the thickness of the storage point is detected by the detection switch 509. When a certain thickness is reached, the detection switch 509 triggers the rotation motor to rotate, driving the storage box 507 to rotate, and then the adsorption tube 510 is connected with the suction tube 511; S7: The suction tube 511 uses the Venturi effect of the Venturi tube 512 to draw the titanium particles in the storage box 507 back into the auxiliary input tube 502 and then into the input tube 5 to mix with the ceramic particles.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A processing device for a non-coated non-stick pan, comprising a spray gun (1), a powder injection port (2), a water-cooled positive electrode (3) and a cathode (4), characterized in that: The powder injection port (2) is connected to a delivery pipe (5) for providing the powder for injection; The delivery pipe (5) comprises a main input pipe (501) for delivering ceramic particles and a secondary input pipe (502) for delivering titanium particles; The main input pipe (501) is provided with a first electrode (503) for charging the particles passing through, and the auxiliary input pipe (502) is provided with a second electrode (504) for charging the particles passing through and having a polarity opposite to that of the first electrode (503), so that the titanium particles and the ceramic particles can be adsorbed to each other after being charged; The conveying pipe (5) is provided with a plurality of turbulent pipes (505) for further mixing the particles passing through.

2. The processing device for a non-coated non-stick pan according to claim 1, characterized in that: An electrode plate (506) for repelling titanium particles is provided on one side of the tube wall of the delivery tube (5) close to one end of the powder injection port (2), and a storage box (507) for storing the repelled titanium particles is provided on the other side of the tube wall; The storage box (507) is provided with a filter screen (508).

3. The processing device for a non-coated non-stick pan according to claim 2, characterized in that: The storage box (507) is provided with a detection switch (509) for detecting the thickness of particles in the box, and the bottom of the storage box (507) is provided with an adsorption tube (510); The storage box (507) is rotatably mounted on the conveying tube (5) via a rotating motor, the detection switch (509) is electrically connected to the rotating motor, and a suction tube (511) is disposed on the outside of the conveying tube (5) to match the rotated adsorption tube (510).

4. The processing device for a non-coated non-stick pan according to claim 3, characterized in that: The auxiliary input pipe (502) is provided with a venturi tube (512), and the venturi tube (512) is connected to the suction tube (511) and is used to draw the titanium particles in the storage box (507) back into the auxiliary input pipe (502).

5. The processing device for a non-coated non-stick pan according to claim 1, characterized in that: The conveying tube (5) is provided with an oscillating assembly (6) for mixing and oscillating particles in the tube body. The oscillating assembly comprises adjacent and staggered spoiler tubes (505) and a plurality of oscillating balls (601) arranged on the spoiler tubes (505). The spoiler tubes (505) are arranged on the conveying tube (5) in a reciprocating sliding manner.

6. The processing device for a non-coated non-stick pan according to claim 5, characterized in that: One end of the spoiler tube (505) is provided with a stop plate (602) after passing through the delivery tube (5), and the other end is provided with a drive hole (603) after passing through the delivery tube (5). A swing arm (604) cooperating with the drive hole (603) is rotatably provided on the outer side of the delivery tube (5), and a drive groove (605) cooperating with the drive hole (603) is provided on the swing arm (604).

7. The processing device for a non-coated non-stick pan according to claim 6, characterized in that: A return spring (606) is provided between the limit plate (602) and the delivery pipe (5).

8. The processing device for a non-coated non-stick pan according to claim 7, characterized in that: The swing arm (604) is provided with a driving arm (607), the delivery pipe (5) is provided with a driving pump (201) that matches the driving arm (607), and the driving pump (201) is provided with a driving wheel (202) that matches the driving arm (607).

9. The processing device for a non-coated non-stick pan according to claim 8, characterized in that: The driving pump (201) is a hydraulic pump, and the water cooling pipeline of the water-cooled positive electrode (3) passes through the driving pump (201) to provide power for the driving pump (201).

10. A process for producing an uncoated non-stick pan using the uncoated non-stick pan processing device as claimed in claim 4, characterized in that: The process is as follows: S1: The ceramic particles are charged after passing through the first electrode (503) on the main input tube (501), and the titanium particles are charged with a charge having a polarity opposite to that of the ceramic particles after passing through the second electrode (504) on the auxiliary input tube (502); S2: The ceramic particles and the titanium particles are mixed after entering the conveying pipe (5), and the ceramic particles are adsorbed onto the titanium particles, so that the ceramic particles are coated with the titanium particles; S3: The mixed particles pass through the spoiler tube (505) and then the production line Venturi effect, so that the particles are further mixed, and the titanium particles coated on the surface of the ceramic particles are mixed more thoroughly; S4: When the mixed particles pass through the electrode plate (506), the titanium particles that are not adsorbed by the ceramic particles are repelled into the storage box (507) because of the charge having the same polarity as the electrode plate (506), while the ceramic particles coated with the titanium particles enter the powder injection port (2) and are sprayed by the spray gun (1) onto the surface of the workpiece for cladding. During cladding, the titanium particles with small diameters are first melted and then adhered to the surface of the ceramic particles. Subsequently, after contacting with the workpiece, the melted titanium and the material on the surface of the workpiece are quickly fused, so that the ceramic particles are effectively adhered to the surface of the workpiece, making the ceramic particle cladding more uniform and firm. S5: the titanium particles entering the storage box (507) in S4 are stored, and the thickness of the storage point is detected by the detection switch (509). When a certain thickness is reached, the detection switch (509) triggers the rotation motor to rotate, driving the storage box (507) to rotate, and then the adsorption tube (510) is docked with the suction tube (511); S6: The suction tube (511) uses the Venturi effect of the Venturi tube (512) to draw the titanium particles in the storage box (507) back into the auxiliary input tube (502) and then into the input tube (5) to mix with the ceramic particles.

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