Single-row continuous push disc carburizing heat treatment pre-cleaning machine and production line and treatment method

Abstract

The application discloses a single-row continuous pushing disc carburizing heat treatment front cleaning machine and production line and a treatment method, and relates to the technical field of carburizing heat treatment, in particular to a single-row continuous pushing disc carburizing heat treatment front cleaning machine and production line and a treatment method.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of advanced steel materials, in particular to a single-row continuous push disc carburizing heat treatment pre-cleaning machine, production line and treatment method. BACKGROUND

[0002] The surface strengthening treatment of key steel materials such as high-carbon chromium bearing steel, carburizing gear steel and medium-carbon structural steel has strict requirements on process precision. Such steel materials are widely used in core components such as automobile gears, high-end bearings and engineering machinery shafts, and their performance directly determines the wear resistance, fatigue strength and service life of the equipment, and is the basic material support in the field of high-end equipment manufacturing.

[0003] As a core process for improving the surface performance of steel, carburizing heat treatment can significantly optimize the matching of surface hardness and core toughness by accurately infiltrating carbon elements into the surface layer of steel in a high-temperature carbon-rich atmosphere, forming a gradient distribution of hardened layer.

[0004] In the process chain of gear carburizing heat treatment, the pre-cleaning process is the premise and basis for ensuring the final carburizing quality. Gears, as typical complex structural parts, are prone to residual impurities such as oil stains and cutting fluid during machining. If these impurities are not completely removed, it will directly lead to uneven carbon potential distribution in the furnace during carburizing, deviation of workpiece penetration layer thickness, and even cause surface oxidation spots and other defects, seriously affecting the mechanical properties and service life of the gear.

[0005] However, the pre-cleaning machine in the existing continuous production line mostly uses batch spraying and soaking method, which is difficult to adapt to the complex structure characteristics of gears.

[0006] Especially when cleaning high-precision gears, the batch soaking cleaning method can cause damage to the gears, resulting in unqualified gear products, and the soaking and spraying method cannot effectively clean the hidden areas such as gear teeth and gear roots, leading to prominent oil stain residue problems. Residual impurities not only interfere with the stability of the subsequent carburizing process, but also may reduce the reactivity of the workpiece surface and the carburizing atmosphere, ultimately affecting the quality consistency of the product.

[0007] Therefore, it is a key requirement to develop a continuous push disc carburizing heat treatment production line that can efficiently clean the complex structure of gears and a pre-cleaning machine that can clean high-precision gears one by one to prevent multiple gears from colliding, and can also clean the gear grooves, which is a key requirement to improve the overall quality of carburizing heat treatment.

[0008] The existing single-row continuous push disc carburizing heat treatment production line sequentially comprises a feeding and discharging roller table and a conveying device, a front cleaning machine, a pre-oxidation furnace, a heating furnace (a heating section), a heating carburizing furnace (a strong carburizing and diffusion section), a cooling furnace, a quenching chamber, a secondary heating furnace, a double-station quenching oil tank, a rear cleaning machine, a push disc tempering furnace, an air cooling table, a control system (including temperature control, carbon control, program control, etc.), and a production line automation and computer monitoring management system.

[0009] The working position of the front cleaning machine in the present application is the same as that of the existing front cleaning machine on the existing production line. SUMMARY

[0010] The main purpose of the present application is to provide a single-row continuous push disc carburizing heat treatment front cleaning machine and production line and treatment method, aiming to solve the technical problem that in the prior art, the existing cleaning technology is prone to leaving oil stains, cutting fluid and other impurities generated during the machining process in the tooth gap and tooth root.

[0011] To achieve the above-mentioned purpose, the single-row continuous push disc carburizing heat treatment front cleaning machine comprises a horizontally arranged base plate, a gear righting part, a gear cleaning part and a gear drying part are sequentially arranged on the base plate; the gear cleaning part comprises a gear conveying assembly, a gear cleaning assembly and a gear rinsing assembly;

[0012] The gear righting part is used for receiving the gears conveyed by the feeding and discharging roller table and the conveying device, and vertically righting the horizontally lying gears;

[0013] The gear cleaning assembly comprises a brushing assembly and a flushing assembly, which are used for cleaning the surface of the gear by brushing and flushing;

[0014] The gear rinsing assembly is used for rinsing the gears cleaned by the gear cleaning assembly;

[0015] The gear drying part is used for drying the gears and conveying the dried gears into the pre-oxidation furnace;

[0016] The gear conveying assembly is used for grabbing the gears in the vertical state on the gear righting part, and sequentially driving the gears into the gear cleaning assembly and the gear rinsing assembly, and finally conveying the gears into the gear drying part.

[0017] Preferably, the gear righting part comprises a vertical piece horizontally arranged on the base plate and a feeding conveying belt connected with the base plate, and the vertical piece comprises a main vertical rod and a vice vertical rod which are horizontally and parallelly arranged;

[0018] The feeding conveying belt is located on one side of the main vertical rod in the length direction, and is used for receiving the materials conveyed by the feeding and discharging roller table and the conveying device and conveying the materials to the space between the main vertical rod and the vice vertical rod;

[0019] The main vertical rod is fixedly connected with the base plate, the auxiliary vertical rod is slidably connected with the base plate, and one side of the auxiliary vertical rod away from the main vertical rod is provided with a first hydraulic cylinder for pushing the auxiliary vertical rod to move towards or away from one side of the main vertical rod;

[0020] The main vertical rod is formed with a vertical arc surface on the side close to the auxiliary vertical rod, and the side of the auxiliary vertical rod close to the main vertical rod is a vertical surface;

[0021] The vertical arc surface is inclined in the vertical direction towards the side away from the auxiliary vertical rod, and the inclination angle of the vertical arc surface gradually decreases towards the side away from the feeding conveyor belt, and finally tends to be vertical;

[0022] The gear righting part further comprises a gear inclination assembly for pushing the gear to move towards the side of the vertical arc surface to make the side of the gear away from the auxiliary vertical rod be inclined upwards when the gear is located between the main vertical rod and the auxiliary vertical rod, and further comprises a gear pushing assembly for driving the inclined gear to move towards the side away from the feeding conveyor belt.

[0023] Preferably, the gear inclination assembly comprises a push plate arranged on the side of the auxiliary vertical rod close to the feeding conveyor belt, and the distance from the side of the push plate away from the auxiliary vertical rod to the side of the auxiliary vertical rod away from the push plate is the same as the length of the main vertical rod;

[0024] The side of the push plate away from the main vertical rod is provided with a second hydraulic cylinder for pushing the push plate to move towards or away from one side of the main vertical rod;

[0025] The gear inclination assembly further comprises a detection driving module, which drives the second hydraulic cylinder to push the push plate to move towards the side of the main vertical rod when detecting that the gear is located between the push plate and the main vertical rod.

[0026] Preferably, the gear pushing assembly comprises a bearing box with an open side wall, the bearing box is located on the side of the main vertical rod away from the auxiliary vertical rod, the opening of the bearing box is towards the main vertical rod, two transmission gears are rotatably arranged in the bearing box, the two transmission gears are drivingly connected through a transmission chain, the rotation directions of the two transmission gears are the same as the extension direction of the main vertical rod, a first servo motor is arranged on the side of the bearing box away from the main vertical rod, and the output shaft of the first servo motor is connected with any one of the transmission gears;

[0027] The transmission chain is connected with a push rod close to the side wall of the opening of the bearing box, one end of the push rod close to the opening of the bearing box extends out of the bearing box to extend to between the main vertical rod and the auxiliary vertical rod, and an annular slide is recessed on the inner wall of the opening of the bearing box, and the outer wall of the push rod is provided with a sliding block for sliding in the annular slide;

[0028] The distance between the two transmission gears is greater than the length of the main vertical rod;

[0029] Further comprising a gear temporary storage assembly arranged on the side of the vertical member away from the feeding conveyor, the gear temporary storage assembly comprising a first limiting rod and a second limiting rod arranged in parallel, the first limiting rod being fixedly connected to the base plate, and the second limiting rod being connected with a third hydraulic cylinder for driving the second limiting rod to move towards or away from the side of the first limiting rod;

[0030] The side of the first limiting rod close to the second limiting rod is located on the same extension plane as one side of the main vertical rod, the extension direction of the first limiting rod is the same as the extension direction of the main vertical rod, and the side of the first limiting rod away from the main vertical rod is provided with a baffle for blocking the gear; the first limiting rod is in clearance fit with the main vertical rod.

[0031] Preferably, the gear cleaning assembly comprises a cleaning pool embedded on the base plate, and the cleaning pool is located on the side of the gear temporary storage assembly away from the vertical member;

[0032] A vibrating plate is horizontally arranged in the cleaning pool, and a plurality of slide holes are symmetrically formed at the four corners of the two sides of the vibrating plate in the horizontal direction, a spring is arranged at the bottom of each slide hole, and a plurality of slide rods corresponding to the slide holes are horizontally arranged on the inner wall of the cleaning pool; a mounting cavity is formed in the vibrating plate, and a vibrating motor is arranged on the cavity wall of the mounting cavity;

[0033] The extension direction of the slide hole on the vibrating plate is perpendicular to the extension direction of the first limiting rod; and a brush plate with bristles is detachably arranged on the side of the vibrating plate away from the bottom of the cleaning pool;

[0034] An annular cleaning water pipe is arranged in the cleaning pool, the cleaning water pipe is connected with a cleaning water pump, the cleaning water pipe is located above the vibrating plate, a plurality of cleaning nozzles are arranged on the side of the cleaning water pipe away from the wall of the cleaning pool, and the nozzles of the cleaning nozzles are directed towards the center line of the brush plate to flush the gears passing through the cleaning pool.

[0035] Preferably, the gear cleaning assembly comprises a cleaning pool embedded on the base plate, and the cleaning pool is located on the side of the gear temporary storage assembly away from the vertical member;

[0036] An annular rinsing water pipe and an annular air pipe are arranged in the rinsing pool, and the air pipe is located above the rinsing water pipe; the rinsing water pipe is connected with a rinsing water pump, a plurality of rinsing nozzles are uniformly and interval ly arranged on the outer wall of the rinsing water pipe, and the nozzles of the rinsing nozzles are directed towards the inner side of the rinsing water pipe;

[0037] The air pipe is connected with an air pump, a plurality of air injection heads are uniformly and interval ly arranged on the outer wall of the air pipe, and the nozzles of the air injection heads are directed towards the inner side of the air pipe.

[0038] Preferably, the gear drying part comprises an output conveyor belt and a drying chamber arranged above the output conveyor belt;

[0039] The drying chamber is in the shape of a "H", and the two ends of the "H" shaped drying chamber are open in the conveying direction of the output conveyor belt. A hot air blower is arranged in the drying chamber to blow hot air towards the output conveyor belt. The output conveyor belt is located on the side of the rinsing tank away from the cleaning tank, and is used to convey the gears to the pre-oxidation furnace.

[0040] Preferably, the gear conveying assembly comprises a base column vertically and slidably arranged on a base plate, the sliding direction of the base column is the same as the distribution direction of the cleaning tank and the rinsing tank. The base plate is provided with an electric screw sliding table for moving the base column on the base plate. The end of the base column away from the base plate is transversely provided with a large arm, the large arm extends above the distribution direction of the cleaning tank and the rinsing tank. A base block is slidably arranged on the lower side of the large arm, and a fourth hydraulic cylinder is connected to the side of the base block close to the base column for moving the base block towards or away from the base column. A mounting plate is arranged below the base block, and the mounting plate and the base block are connected by a fifth hydraulic cylinder for lifting the mounting plate towards or away from the base block. A anti-falling plate is arranged on the end of the base column close to the base plate, and the anti-falling plate is used to prevent the base column from falling over.

[0041] A second servo motor is mounted on the mounting plate, and the output shaft of the second servo motor is directed away from the base block. The output shaft of the second servo motor is connected to a transversely arranged grabbing rod through a right-angle transmission box. The grabbing rod is located on the side of the right-angle transmission box away from the base column, and the direction of the grabbing rod is the same as the direction of the large arm.

[0042] A waterproof electromagnet is embedded in the grabbing rod, and a waterproof conductive slip ring is arranged on the outer wall of the grabbing rod for supplying power to the waterproof electromagnet. A "C" shaped material taking plate is arranged on the side of the output conveyor belt close to the rinsing tank, and the "C" shaped opening of the material taking plate is directed towards the drying chamber. The material taking plate is located on the conveying path of the output conveyor belt.

[0043] The gear conveying assembly further comprises a visual recognition module and a conveying drive module.

[0044] The conveying drive module is used to control the operation of the fourth hydraulic cylinder, the fifth hydraulic cylinder, the second servo motor, the electric screw sliding table and the waterproof electromagnet.

[0045] The visual recognition module is used to collect and analyze images of the gears located between the first limiting rod and the second limiting rod, detect the center hole of the gears and determine the spatial coordinates of the axis of the gears.

[0046] Based on the spatial coordinates of the axis center line, a movement control instruction is generated and sent to a conveying driving module, the conveying driving module schedules the grabbing rod to extend into the center hole of the gear along the axis center line of the center hole of the gear, and the waterproof electromagnet is energized to realize the grabbing of the gear.

[0047] The application also provides a single-row continuous push-disc carburizing heat treatment production line, which is applied to the front cleaning machine.

[0048] The application also provides a single-row continuous push-disc carburizing heat treatment production line, which is applied to the front cleaning machine.

[0049] The application also provides a single-row continuous push-disc carburizing heat treatment production line, which is applied to the front cleaning machine.

[0050] S1: the feeding roller table and the conveying device convey the gear to the feeding conveying belt;

[0051] S2: the interval between the main vertical rod and the auxiliary vertical rod is adjusted by the first hydraulic cylinder to adapt to the thickness of the gear;

[0052] S3: the feeding conveying belt conveys the gear to the gap between the push plate and the main vertical rod, and the detection driving module drives the second hydraulic cylinder to push the push plate to move towards the side close to the main vertical rod when the gear is located between the push plate and the main vertical rod, so as to push the gear to tilt and make the gear gradually stand under the action of the vertical curved surface under the pushing of the gear pushing assembly;

[0053] S4: the vision recognition module collects images of the gear after the gear is stood, and determines the spatial coordinates of the center hole of the gear;

[0054] S5: after the vision recognition module recognizes the position of the gear hole, the conveying driving module drives the base column to move through the control of the electric screw rod sliding table, and stops until the vision recognition module detects that the grabbing rod moves above the axis center line of the gear center hole;

[0055] Then the fifth hydraulic cylinder is controlled to extend to drive the grabbing rod to descend, and stops until the vision recognition module detects that the axis center line of the grabbing rod coincides with the axis center line of the gear center hole;

[0056] After the axis of the grabbing rod coincides with the axis of the center hole of the gear, the fourth hydraulic cylinder drives the base block to move away from the base column until the visual recognition module detects that the grabbing rod extends into the center hole of the gear, and then stops; the waterproof electromagnet is powered on to adsorb the gear;

[0057] S6: The fifth hydraulic cylinder is retracted to drive the grabbing rod to move away from the base plate, and the gear is moved away from the base plate to make the gear suspended; the electric lead screw sliding table drives the base column to move until the visual recognition module detects that the grabbing rod moves above the cleaning pool, and then stops;

[0058] S7: The fifth hydraulic cylinder is extended to make the grabbing rod extend into the cleaning pool until the visual recognition module detects that the gear contacts the brush of the brush plate, and then the conveying drive module controls the second servo motor to rotate to drive the grabbing rod to rotate, further drive the gear to rotate in the cleaning pool, and the vibration motor drives the brush plate to vibrate at a high frequency to cooperate with the brush to brush in the direction of the tooth groove; then the high-pressure nozzle of the annular cleaning water pipe is used for flushing to remove the residual oil stains between the teeth and the tooth root, so that the brush plate brushes the gear in each tooth groove, and the conveying drive module controls the residence time of the grabbing rod in the cleaning pool;

[0059] After the grabbing rod stays in the cleaning pool for a preset time, the conveying drive module controls the fifth hydraulic cylinder to retract until the visual recognition module detects that the grabbing rod moves out of the cleaning pool, and then stops;

[0060] S8: The electric lead screw sliding table drives the base column to move until the visual recognition module detects that the grabbing rod moves above the rinsing pool, and then stops; the fifth hydraulic cylinder is extended to make the grabbing rod extend into the rinsing pool until the visual recognition module detects that the gear is located between the rinsing water pipes, and then the conveying drive module controls the second servo motor to rotate to drive the grabbing rod to rotate, further drive the gear to rotate in the rinsing pool, so that the rinsing nozzle flushes each surface of the gear, and the conveying drive module controls the residence time of the grabbing rod between the rinsing water pipes;

[0061] S9: After the grabbing rod stays between the rinsing water pipes for a preset time, the conveying drive module controls the fifth hydraulic cylinder to retract until the visual recognition module detects that the grabbing rod is located between the air pipes, and then stops; then the conveying drive module controls the second servo motor to rotate to drive the grabbing rod to rotate, further drive the gear to rotate in the rinsing pool, so that the air jet head flushes each surface of the gear with an air knife to preliminarily remove the residual water stains on the surface of the gear through high-pressure airflow, and the conveying drive module controls the residence time of the grabbing rod between the air pipes;

[0062] S10: After the time of the grabbing rod staying between the air pipes reaches the preset time, the conveying driving module controls the fifth hydraulic cylinder to contract until the visual recognition module detects that the grabbing rod is located at the rinsing pool and stops;

[0063] S11: The conveying driving module controls the electric screw rod sliding table to drive the base column to move until the visual recognition module detects that the grabbing rod moves to above the material taking plate and stops;

[0064] S12: The conveying driving module controls the fifth hydraulic cylinder to extend until the visual recognition module detects that the grabbing rod is in contact with the edge of the material taking plate, at this time, the gear is located in the C-shaped area of the material taking plate and above the discharging conveying belt; the conveying driving module controls the waterproof electromagnet to be powered off, and the fourth hydraulic cylinder is contracted to drive the base block to move towards the side close to the base column, and drive the grabbing rod to move, so that the material taking plate scrapes the gear on the grabbing rod, so that the gear falls from the grabbing rod to the discharging conveying belt;

[0065] S13: The discharging conveying belt drives the gear to move into the drying chamber, and the hot air machine in the drying chamber performs hot air convection drying on the gear, and then the discharging conveying belt transports the dried gear to the pre-oxidation furnace;

[0066] S14: The gear sequentially passes through the pre-oxidation furnace, the heating furnace, the heating carburizing furnace, the cooling furnace, the rapid cooling chamber, the secondary heating furnace, the double-station quenching oil tank, the post-cleaning machine, the push-disc type tempering furnace and the air cooling table on the production line, and the carburizing heat treatment of the gear is completed; the control system and the production line automation and computer monitoring management system control the time and temperature of the gear in each step.

[0067] In the technical scheme of the present application, the gear righting part stands the flat gear, so that all surfaces of the gear (including the tooth surface, the gear root and the gear gap) can be fully exposed to the cleaning, rinsing and drying processes, avoiding incomplete cleaning due to improper posture; the gear conveying assembly orderly pushes the standing gear to sequentially pass through each process, ensuring that all key parts of each gear can be subjected to the same strength of cleaning, rinsing and drying treatment, significantly improving the consistency of batch gear cleaning quality;

[0068] The gear cleaning assembly adopts a composite cleaning method of "brushing + flushing": the brushing assembly can deeply enter the gaps such as the gear gap and the gear root through physical contact, and directly strip stubborn dirt and attached impurities; the flushing assembly further flushes the loosened impurities through high-pressure fluid, forming a synergistic effect of "mechanical stripping + fluid removal", completely solving the problem of insufficient cleaning ability of single cleaning method for complex structure areas;

[0069] In summary, the front cleaning machine realizes accurate and thorough cleaning of the complex structure of the gear through structural innovation, solves the core pain points of the existing cleaning method, provides stable substrate conditions for the subsequent carburizing process, and ultimately helps to improve the consistency and reliability of the gear carburizing quality, and the way of cleaning the gear one by one can prevent multiple gears from colliding. BRIEF DESCRIPTION OF DRAWINGS

[0070] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to the structures shown in these drawings without creative labor for those skilled in the art.

[0071] Figure 1 The front cleaning machine structure schematic diagram of the present application;

[0072] Figure 2 The gear conveying assembly schematic diagram of the present application;

[0073] Figure 3 The gear righting portion structure schematic diagram of the present application;

[0074] Figure 4 The gear righting portion structure schematic diagram of the present application, in which the gear enters between the push plate and the main vertical rod;

[0075] Figure 5 The second hydraulic cylinder of the gear righting portion of the present application is extended, and the push plate pushes the gear towards the side close to the main vertical rod, so that the gear is inclined along the vertical arc surface;

[0076] Figure 6 The push rod of the gear righting portion of the present application pushes the gear to move towards the side away from the feeding conveyor belt, so that the gear is further erected under the action of the vertical arc surface;

[0077] Figure 7 The push rod of the gear righting portion of the present application pushes the gear to continue moving towards the side away from the feeding conveyor belt, so that the gear is erected under the action of the vertical arc surface;

[0078] Figure 8 The gear cleaning assembly, gear rinsing assembly and gear drying portion structure schematic diagram of the present application;

[0079] Figure 9 The gear cleaning assembly cross-section structure schematic diagram of the present application.

[0080] BRIEF DESCRIPTION OF DRAWINGS

[0081] 1, base plate; 2, gear straightening part; 21, feeding conveyor belt; 22, main vertical rod; 22a, vertical camber; 23, auxiliary vertical rod; 24, first hydraulic cylinder; 25, push plate; 26, second hydraulic cylinder; 27, bearing box; 28, transmission gear; 29, push rod; 210, transmission chain; 211, first servo motor; 212, first limit rod; 213, second limit rod; 214, third hydraulic cylinder; 215, baffle; 3, gear cleaning assembly; 31, cleaning pool; 32, vibrating plate; 32a, mounting cavity; 32b, sliding hole; 33, vibrating motor; 34, spring; 35, sliding rod; 36, brush plate; 37, cleaning water pipe; 38, cleaning nozzle; 4, gear rinsing assembly; 41, rinsing pool; 42, air pipe; 43, rinsing water pipe; 5, gear drying part; 51, discharging conveyor belt; 52, drying chamber; 6, gear conveying assembly; 61, base column; 62, large arm; 63, fourth hydraulic cylinder; 64, base block; 65, fifth hydraulic cylinder; 66, second servo motor; 67, mounting plate; 68, right-angle transmission box; 69, waterproof conductive slip ring; 610, grabbing rod; 611, waterproof electromagnet; 612, anti-inversion plate; 613, electric screw rod sliding table; 614, material taking plate.

[0082] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0083] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0084] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0085] In addition, the descriptions such as “first”, “second” and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as “first”, “second” can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of “plurality” is at least two, such as two, three, etc., unless otherwise specifically limited.

[0086] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0087] In addition, the technical solutions among various embodiments of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0088] The present application proposes a single-row continuous push disc carburizing heat treatment front cleaning machine and production line and treatment method.

[0089] Please refer to Figures 1 to 9 The single-row continuous push disc carburizing heat treatment production line front cleaning machine comprises a horizontally arranged base plate 1, a gear righting part 2, a gear cleaning part and a gear drying part 5 are sequentially arranged on the base plate 1; the gear cleaning part comprises a gear conveying assembly 6, a gear cleaning assembly 3 and a gear rinsing assembly 4;

[0090] The gear righting part 2 is used for receiving gears conveyed by the upper and lower feeding roller tables and the conveying device, and vertically righting the flat gears;

[0091] The gear cleaning assembly 3 comprises a brushing assembly and a flushing assembly, which is used for cleaning the surface of the gear by brushing and flushing;

[0092] The gear rinsing assembly 4 is used for rinsing the gears cleaned by the gear cleaning assembly 3;

[0093] The gear drying part 5 is used for drying the gears and conveying the dried gears into the pre-oxidation furnace;

[0094] The gear conveying assembly 6 is used for grabbing the gears in the vertical state on the gear righting part 2, and driving the gears to sequentially enter the gear cleaning assembly 3 and the gear rinsing assembly 4, and finally conveying the gears into the gear drying part 5.

[0095] In the technical solution of the present application, the gear righting portion 2 stands the lying gear upright, so that each surface of the gear (including the tooth surface, the tooth root and the gear teeth) can be fully exposed to the cleaning, rinsing and drying processes, avoiding incomplete cleaning caused by improper posture due to partial area being blocked; the gear conveying assembly 6 orderly pushes the upright gear to pass through each process in turn, ensuring that all key parts of each gear can be subjected to cleaning, rinsing and drying treatment of equal intensity, significantly improving the consistency of batch gear cleaning quality.

[0096] The gear cleaning assembly 3 adopts a composite cleaning mode of "brushing + flushing": the brushing assembly can deeply enter the gaps such as gear teeth and tooth roots through physical contact to directly strip stubborn dirt and attached impurities; the flushing assembly further flushes the loosened impurities through high-pressure fluid, forming a synergistic effect of "mechanical stripping + fluid removal", completely solving the problem of insufficient cleaning ability of single cleaning mode for complex structure areas.

[0097] In summary, the front cleaning machine realizes precise and thorough cleaning of the complex structure of the gear through structural innovation, solves the core pain points of the existing cleaning method, provides stable base material conditions for the subsequent carburizing process, and finally helps to improve the consistency and reliability of gear carburizing quality, and the way of cleaning the gear one by one can prevent multiple gears from colliding.

[0098] Please refer to the attached Figures 3-7 The gear righting portion 2 includes a vertical piece transversely arranged on the base plate 1 and a feeding conveyor belt 21 connected with the base plate 1, and the vertical piece includes a main vertical rod 22 and a secondary vertical rod 23 transversely and parallel arranged;

[0099] The feeding conveyor belt 21 is located on one side of the length direction of the main vertical rod 22, and is used for receiving materials conveyed by the upper and lower material roller tables and the conveying device and conveying the materials to the space between the main vertical rod 22 and the secondary vertical rod 23;

[0100] The main vertical rod 22 is fixedly connected with the base plate 1, and the secondary vertical rod 23 is slidably connected with the base plate 1, and a first hydraulic cylinder 24 for pushing the secondary vertical rod 23 to move towards or away from the side of the main vertical rod 22 is arranged on the side of the secondary vertical rod 23 away from the main vertical rod 22;

[0101] The side of the main vertical rod 22 close to the secondary vertical rod 23 is formed with a vertical arc surface 22a, and the side of the secondary vertical rod 23 close to the main vertical rod 22 is a vertical surface;

[0102] The vertical arc surface 22a is inclined towards the side away from the secondary vertical rod 23 in the vertical direction, and the inclination angle of the vertical arc surface 22a gradually decreases towards the side away from the feeding conveyor belt 21, and finally tends to be vertical;

[0103] The gear upright part 2 further comprises a gear tilting assembly for pushing the gear to move towards the side of the upright arc surface 22a to tilt the side of the gear away from the secondary upright rod 23 when the gear is located between the primary upright rod 22 and the secondary upright rod 23; and a gear pushing assembly for driving the tilted gear to move towards the side away from the feeding conveyor belt 21.

[0104] The secondary upright rod 23 cooperates with the first hydraulic cylinder 24 to adjust the distance between the secondary upright rod 23 and the primary upright rod 22, and the distance can be adjusted according to the gear thickness of the gear to adapt to the upright requirement of gears of different thicknesses, thereby solving the poor universality problem of the traditional fixed clamp; when the gear pushing assembly pushes the tilted gear to move towards the side away from the feeding conveyor belt 21, the gear gradually stands under the action of the upright arc surface 22a with the movement of the gear; at the same time, the direction of the gear slot is consistent with the direction of the bristles of the brush plate 36 during cleaning, thereby improving the brushing efficiency; the cooperation of the feeding conveyor belt 21 and the gear pushing assembly realizes the continuous transition of the gear from the lying state to the standing state, thereby providing a foundation support for the subsequent automatic cleaning.

[0105] Please refer to the accompanying drawings Figures 3-7 The gear tilting assembly comprises a push plate 25 arranged on the side of the secondary upright rod 23 close to the feeding conveyor belt 21, and the distance from the side of the push plate 25 away from the secondary upright rod 23 to the side of the secondary upright rod 23 away from the push plate 25 is the same as the length of the primary upright rod 22.

[0106] The side of the push plate 25 away from the primary upright rod 22 is provided with a second hydraulic cylinder 26 for pushing the push plate 25 to move towards the side close to or away from the primary upright rod 22.

[0107] The gear tilting assembly further comprises a detection driving module, which drives the second hydraulic cylinder 26 to push the push plate 25 to move towards the side close to the primary upright rod 22 when detecting that the gear is located between the push plate 25 and the primary upright rod 22.

[0108] The detection driving module monitors the gear position in real time, triggers the second hydraulic cylinder 26 to push the push plate 25, and ensures that the gear is accurately guided to the upright arc surface 22a in the initial stage of upright, so as to facilitate the gear pushing assembly to push the gear to move towards the side away from the feeding conveyor belt 21.

[0109] Please refer to the accompanying drawings Figures 3-7The gear pushing assembly comprises a bearing box 27 with an open side wall, which is located on the side of the main vertical rod 22 away from the auxiliary vertical rod 23, the opening of the bearing box 27 faces the main vertical rod 22, two transmission gears 28 are rotatably arranged in the bearing box 27, the two transmission gears 28 are connected by a transmission chain 210, the rotation directions of the two transmission gears 28 are the same as the extending direction of the main vertical rod 22, a first servo motor 211 is arranged on the side of the bearing box 27 away from the main vertical rod 22, and the output shaft of the first servo motor 211 is connected with any one of the transmission gears 28.

[0110] The transmission chain 210 is connected with a push rod 29 near the side wall of the opening of the bearing box 27, one end of the push rod 29 near the opening of the bearing box 27 extends out of the bearing box 27 and extends to the space between the main vertical rod 22 and the auxiliary vertical rod 23, and the inner wall of the opening of the bearing box 27 is recessed to form an annular slide, and the outer wall of the push rod 29 is provided with a sliding block for sliding in the annular slide.

[0111] The distance between the two transmission gears 28 is greater than the length of the main vertical rod 22.

[0112] The linkage mechanism of the transmission chain 210 and the push rod 29 enables the gear to continuously move in the pushing-reset cycle, avoids the time loss of traditional intermittent conveying, and improves the cleaning rhythm; the transmission chain 210 is divided into two parallel chain parts under the action of the two transmission gears 28, when the push rod 29 moves on the lower chain part, the push rod 29 pushes the gear to move away from the side of the feeding conveyor belt 21, when the transmission chain 210 drives the push rod 29 to move to the upper chain part, the push rod 29 is separated from the gear and crosses the gear between the main vertical rod 22 and the auxiliary vertical rod 23, and then pushes the gear to move away from the side of the feeding conveyor belt 21 again, and so on; the distance between the two transmission gears 28 is equal to the distance by which the push rod 29 pushes the gear to move, and the distance between the two transmission gears 28 is greater than the length of the main vertical rod 22.

[0113] The gear temporary storage assembly is further arranged on the side of the vertical rod away from the feeding conveyor belt 21, the gear temporary storage assembly comprises a first limiting rod 212 and a second limiting rod 213 which are arranged in parallel, the first limiting rod 212 is fixedly connected with the base plate 1, and the side of the second limiting rod 213 away from the first limiting rod 212 is connected with a third hydraulic cylinder 214 for driving the second limiting rod 213 to move towards or away from the side of the first limiting rod 212.

[0114] The first limiting rod 212 is located on the same extension plane as one side of the main vertical rod 22, the extending direction of the first limiting rod 212 is the same as the extending direction of the main vertical rod 22, and the side of the first limiting rod 212 away from the main vertical rod 22 is provided with a baffle 215 for blocking the gear; the first limiting rod 212 is in clearance fit with the main vertical rod 22.

[0115] The third hydraulic cylinder 214 adjusts the distance between the first limiting rod 212 and the second limiting rod 213, adapts to the temporary storage requirements of gears of different thicknesses, and avoids the shaking of gears due to excessive clearance, thereby affecting the subsequent grabbing precision;

[0116] The coplanar design of the side of the first limiting rod 212 close to the second limiting rod 213 and the side of the main vertical rod 22 on the same extension plane ensures that the gear maintains the same space posture as the righting when temporarily stored, thereby providing a stable detection reference for the visual recognition module;

[0117] The temporary storage assembly serves as a buffer link between the righting and cleaning processes, can balance the beat difference between the front and rear processes, and improves the overall coordination of the production line.

[0118] Please refer to the accompanying drawings Figures 8-9 The gear cleaning assembly 3 comprises a cleaning pool 31 embedded on the base plate 1, and the cleaning pool 31 is located on the side of the gear temporary storage assembly away from the vertical member;

[0119] The cleaning pool 31 is provided with a vibrating plate 32 transversely, the vibrating plate 32 is provided with a plurality of slide holes 32b symmetrically formed at the four corners of the two sides in the transverse direction, a spring 34 is arranged at the bottom of each slide hole 32b, and a plurality of slide rods 35 corresponding to the slide holes 32b are arranged transversely on the inner wall of the cleaning pool 31; the vibrating plate 32 is formed with a mounting cavity 32a, and a vibrating motor 33 is arranged on the cavity wall of the mounting cavity 32a;

[0120] The first limiting rod 212 is parallel to the base plate 1, the extending direction of each slide hole 32b on the vibrating plate 32 is perpendicular to the extending direction of the first limiting rod 212, and the side of the vibrating plate 32 away from the bottom of the cleaning pool 31 is detachably provided with a brush plate 36 with bristles;

[0121] The cleaning pool 31 is provided with an annular cleaning water pipe 37, the cleaning water pipe 37 is connected to a cleaning water pump, the cleaning water pipe 37 is located above the vibrating plate 32, the side of the cleaning water pipe 37 away from the wall of the cleaning pool 31 is provided with a plurality of cleaning spray heads 38, and the spray nozzles of the cleaning spray heads 38 are directed to the center line of the brush plate 36 to flush the gears passing through the cleaning pool 31.

[0122] The vibration motor 33 drives the brush plate 36 to generate high-frequency vibration (combined with the spring 34-sliding rod 35 structure), so that the bristles brush the gear groove in the extension direction of the gear groove, effectively stripping the adherent oil stains, and the effect is better than that of the conventional static brushing; the cleaning water pipe 37 flows the cleaning liquid, and the cleaning gear outer wall is high-pressure washed through the cleaning nozzle 38;

[0123] The gear cleaning assembly 3 further comprises a cleaning control module for controlling the cleaning water pump and the vibration motor 33 to work; when the cleaning control module monitors that the gear is located in the cleaning pool 31, the cleaning control module controls the cleaning water pump and the vibration motor 33 to work;

[0124] The detachable brush plate 36 is designed to facilitate regular replacement of worn bristles, avoid the cleaning effect caused by the aging of the bristles, and reduce the maintenance cost.

[0125] Please refer to the accompanying drawings Figure 8 The gear rinsing assembly 4 comprises a rinsing pool 41 embedded on the base plate 1, and the rinsing pool 41 is located on the side of the cleaning pool 31 away from the gear temporary storage assembly;

[0126] The rinsing pool 41 is provided with a ring-shaped rinsing water pipe 43 and a ring-shaped air pipe 42, and the air pipe 42 is located above the rinsing water pipe 43; the rinsing water pipe 43 is communicated with the rinsing water pump, and a plurality of rinsing nozzles are uniformly and interval connected on the outer wall of the rinsing water pipe 43, and the spray nozzles are directed to the ring-shaped center of the rinsing water pipe 43; the spray nozzles are directed to the inside of the rinsing water pipe 43.

[0127] The air pipe 42 is communicated with the air pump, and a plurality of air injection heads are uniformly and interval connected on the outer wall of the air pipe 42, and the spray nozzles are directed to the inside of the air pipe 42.

[0128] The rinsing water pipe 43 flows the rinsing water, and the gear rinsing assembly 4 further comprises a rinsing control module for controlling the rinsing water pump and the air pump to work; when the rinsing control module monitors that the gear is located between the rinsing water pipe 43, the rinsing control module controls the rinsing water pump to work to rinse the gear; when the rinsing control module monitors that the gear is located between the air pipe 42, the air pump is controlled to work to preliminarily remove water from the gear by the air knife.

[0129] Please refer to the accompanying drawings Figure 8 The gear drying part 5 comprises a discharging conveyor belt 51 and a drying chamber 52 covering the discharging conveyor belt 51;

[0130] The drying chamber 52 is a "H" shape structure, and the two sides of the "H" shape structure of the drying chamber 52 are opened in the conveying direction of the discharging conveyor belt 51, the drying chamber 52 is provided with a hot air blower blowing towards the discharging conveyor belt 51, the discharging conveyor belt 51 is located on the side of the rinsing pool 41 away from the cleaning pool 31, and the discharging conveyor belt 51 is used to convey the gear to the pre-oxidation furnace.

[0131] The hot air blower blows along the direction of the discharging conveyor belt 51 to form a forced convection field, accelerate the evaporation of water on the surface of the gear, cooperate with the "H" shape structure of the drying chamber 52 to reduce heat loss, and the airflow distribution design (such as multi-air port layout) in the drying chamber 52 ensures that each part of the gear is uniformly heated, and avoids changes in material properties caused by local overheating.

[0132] Please refer to the accompanying drawings Figure 2 The gear conveying assembly 6 comprises a base column 61 vertically and slidingly arranged on the base plate 1, the sliding direction of the base column 61 is the same as the distribution direction of the cleaning pool 31 and the rinsing pool 41, the base plate 1 is provided with an electric screw sliding table 613 for moving the base column 61 on the base plate 1, the end of the base column 61 away from the base plate 1 is transversely provided with a large arm 62, the large arm 62 extends above the distribution direction of the cleaning pool 31 and the rinsing pool 41, the lower side of the large arm 62 is slidingly provided with a base block 64, the side close to the base column 61 of the base block 64 is connected with a fourth hydraulic cylinder 63 for moving the base block 64 towards or away from the side close to or away from the base column 61, the lower side of the base block 64 is provided with a mounting plate 67, the mounting plate 67 and the base block 64 are connected through a fifth hydraulic cylinder 65, and the fifth hydraulic cylinder 65 is used to drive the mounting plate 67 to ascend or descend towards the side close to or away from the base block 64; the end of the base column 61 close to the base plate 1 is provided with an anti-falling plate 612 buckled on the bottom of the base plate 1, and the anti-falling plate 612 is used to prevent the base column 61 from falling over;

[0133] The mounting plate 67 is provided with a second servo motor 66, the output shaft of the second servo motor 66 is towards the side away from the base block 64, the output shaft of the second servo motor 66 is connected with a grabbing rod 610 transversely arranged through a right-angle transmission box 68, the grabbing rod 610 is located on the side of the right-angle transmission box 68 away from the base column 61, and the direction of the grabbing rod 610 is the same as the direction of the large arm 62.

[0134] The grabbing rod 610 is embedded with a waterproof electromagnet 611, and the outer wall of the grabbing rod 610 is provided with a waterproof conductive slip ring 69 for supplying power to the waterproof electromagnet 611; the side of the discharging conveyor belt 51 close to the rinsing pool 41 is provided with a "C" shaped material taking plate 614, the "C" shaped opening of the material taking plate 614 is towards the drying chamber 52; the material taking plate 614 is located on the conveying path of the discharging conveyor belt 51.

[0135] The gear conveying assembly 6 further comprises a visual recognition module and a conveying drive module;

[0136] The conveying drive module is used to control the fourth hydraulic cylinder 63, the fifth hydraulic cylinder 65, the second servo motor 66, the electric screw sliding table 613 and the waterproof electromagnet 611 to work;

[0137] The visual recognition module is used to collect and analyze images of the gear located between the first limiting rod 212 and the second limiting rod 213, detect the central circular hole of the gear and determine the spatial coordinates of the axis of the central circular hole;

[0138] Based on the spatial coordinates of the axis, a movement control instruction is generated and sent to the conveying drive module, which schedules the grabbing rod 610 to extend into the central circular hole of the gear along the axis of the central circular hole of the gear, and realizes the grabbing of the gear by energizing the waterproof electromagnet 611.

[0139] Sub-millimeter positioning: the visual recognition module combined with a deep learning algorithm (such as YOLOv5) can complete the identification of the spatial coordinates of the central circular hole of the gear within 200ms, with a positioning accuracy of ±0.3mm, which is significantly better than traditional mechanical positioning methods.

[0140] Multi-degree-of-freedom cooperation: four-axis linkage of the electric screw sliding table 613 (X-axis), the fourth hydraulic cylinder 63 (Y-axis), the fifth hydraulic cylinder 65 (Z-axis) and the second servo motor 66 (rotary axis) realizes accurate grabbing and posture adjustment of the gear in three-dimensional space, ensuring that the bristles completely match the gear slot during brushing.

[0141] Waterproof reliability: the combination design of the waterproof electromagnet 611 and the conductive slip ring can still maintain stable power supply in a humid cleaning environment, avoiding grabbing failure caused by short circuit.

[0142] Intelligent process control: the conveying drive module dynamically adjusts the motion parameters of each axis according to the preset cleaning time and visual feedback, realizes full-process closed-loop control from grabbing to releasing, and reduces human intervention errors.

[0143] The visual recognition module identifies the position of the gear hole, and the conveying drive module moves the base column 61 by controlling the electric screw sliding table 613 until the visual recognition module detects that the grabbing rod 610 moves above the axis of the gear central circular hole and stops;

[0144] Then control the fifth hydraulic cylinder 65 to extend to drive the grabbing rod 610 to descend until the visual recognition module detects that the axis of the grabbing rod 610 coincides with the axis of the gear central circular hole and stops;

[0145] After the axis of the grabbing rod 610 coincides with the axis of the center hole of the gear, the fourth hydraulic cylinder 63 drives the base block 64 to move away from the base column 61 until the visual recognition module detects that the grabbing rod 610 extends into the center hole of the gear and then stops;

[0146] Next, the waterproof electromagnet 611 is powered on to adsorb the gear;

[0147] Next, the fifth hydraulic cylinder 65 is retracted to drive the grabbing rod 610 to move away from the base plate 1, so as to drive the gear to move away from the base plate 1, so that the gear is suspended;

[0148] Next, the electric lead screw sliding table 613 drives the base column 61 to move until the visual recognition module detects that the grabbing rod 610 moves above the cleaning pool 31 and then stops;

[0149] Next, the fifth hydraulic cylinder 65 is extended to make the grabbing rod 610 extend into the cleaning pool 31 until the visual recognition module detects that the gear contacts the brush of the brush plate 36, and then the conveying drive module controls the second servo motor 66 to rotate to drive the grabbing rod 610 to rotate, further drive the gear to rotate in the cleaning pool 31, so that the brush plate 36 brushes each tooth groove of the gear, and the conveying drive module controls the residence time of the grabbing rod 610 in the cleaning pool 31;

[0150] Next, when the residence time of the grabbing rod 610 in the cleaning pool 31 reaches the preset time, the conveying drive module controls the fifth hydraulic cylinder 65 to retract until the visual recognition module detects that the grabbing rod 610 moves out of the cleaning pool 31 and then stops;

[0151] Next, the electric lead screw sliding table 613 drives the base column 61 to move until the visual recognition module detects that the grabbing rod 610 moves above the rinsing pool 41 and then stops;

[0152] Next, the fifth hydraulic cylinder 65 is extended to make the grabbing rod 610 extend into the rinsing pool 41 until the visual recognition module detects that the gear is located between the rinsing water pipes 43 and then stops, and then the conveying drive module controls the second servo motor 66 to rotate to drive the grabbing rod 610 to rotate, further drive the gear to rotate in the rinsing pool 41, so that the rinsing nozzle flushes each surface of the gear, and the conveying drive module controls the residence time of the grabbing rod 610 between the rinsing water pipes 43;

[0153] Next, the residence time of the grabbing rod 610 between the rinsing water pipes 43 reaches the preset time, the conveying drive module controls the fifth hydraulic cylinder 65 to retract until the visual recognition module detects that the grabbing rod 610 is located between the air pipes 42, and then stops; subsequently, the conveying drive module controls the second servo motor 66 to rotate to drive the grabbing rod 610 to rotate, and further drive the gear to rotate in the rinsing pool 41, so that the air jet head blows the gear in each face to preliminarily remove the water stains on the surface of the gear through high-pressure airflow, and the conveying drive module controls the residence time of the grabbing rod 610 between the air pipes 42;

[0154] Next, the residence time of the grabbing rod 610 between the air pipes 42 reaches the preset time, the conveying drive module controls the fifth hydraulic cylinder 65 to retract until the visual recognition module detects that the grabbing rod 610 is located in the rinsing pool 41, and then stops.

[0155] Next, the conveying drive module controls the electric screw rod sliding table 613 base column 61 to move until the visual recognition module detects that the grabbing rod 610 moves to above the material taking plate 614, and then stops.

[0156] Next, the conveying drive module controls the fifth hydraulic cylinder 65 to extend until the visual recognition module detects that the grabbing rod 610 contacts the edge of the material taking plate 614, at this time, the gear is located in the C-shaped area of the material taking plate 614 and above the discharging conveying belt 51; the conveying drive module controls the waterproof electromagnet 611 to be powered off, and the fourth hydraulic cylinder 63 retracts to drive the base block 64 to move towards the side close to the base column 61, and simultaneously drive the grabbing rod 610 to move, so that the material taking plate 614 scrapes the gear on the grabbing rod 610, so that the gear falls from the grabbing rod 610 to the discharging conveying belt 51, and the cleaning of the gear is completed.

[0157] The application also proposes a single-row continuous push disc carburizing heat treatment production line, which is applied to the above-mentioned front cleaning machine, and the carburizing heat treatment production line is used for carburizing treatment of the gear; the device for carburizing treatment of the gear comprises feeding and discharging roller tables and conveying devices, the front cleaning machine, the pre-oxidation furnace, the heating furnace, the heating carburizing furnace, the cooling furnace, the quenching chamber, the secondary heating furnace, the double-station quenching oil tank, the rear cleaning machine, the push disc type tempering furnace and the air cooling table which are sequentially connected and make the gear sequentially pass through and be heat treated and processed;

[0158] The control system and the production line automation and computer monitoring and management system for controlling the feeding and discharging roller tables and conveying devices, the front cleaning machine, the pre-oxidation furnace, the heating furnace, the heating carburizing furnace, the cooling furnace, the quenching chamber, the secondary heating furnace, the double-station quenching oil tank, the rear cleaning machine, the push disc type tempering furnace and the air cooling table are further included.

[0159] The application further provides a single-row continuous push disc carburizing heat treatment method, which adopts the single-row continuous push disc carburizing heat treatment production line and comprises the following steps.

[0160] S1: the upper and lower feeding roller tables and the conveying device convey the gear to the feeding conveying belt 21;

[0161] S2: the interval between the main vertical rod 22 and the auxiliary vertical rod 23 is adjusted by the first hydraulic cylinder 24 to adapt to the thickness of the gear;

[0162] S3: the feeding conveying belt 21 conveys the gear to the push plate 25 and the main vertical rod 22, when the detection driving module detects that the gear is located between the push plate 25 and the main vertical rod 22, the second hydraulic cylinder 26 is driven to push the push plate 25 to move towards the side close to the main vertical rod 22, the gear is pushed to tilt, and the gear is gradually erected under the action of the vertical camber surface 22a under the pushing of the gear pushing assembly;

[0163] S4: the vision recognition module collects images of the erected gear to determine the spatial coordinates of the central circular hole;

[0164] S5: after the vision recognition module recognizes the position of the gear circular hole, the conveying driving module drives the base column 61 to move through the control of the electric screw rod sliding table 613, and stops until the vision recognition module detects that the grabbing rod 610 moves to above the central circular hole axis of the gear;

[0165] Then the fifth hydraulic cylinder 65 is controlled to extend to drive the grabbing rod 610 to descend, and stops until the vision recognition module detects that the axis of the grabbing rod 610 coincides with the central circular hole axis of the gear;

[0166] After the axis of the grabbing rod 610 coincides with the central circular hole axis of the gear, the fourth hydraulic cylinder 63 drives the base block 64 to move away from the base column 61 until the vision recognition module detects that the grabbing rod 610 extends into the central circular hole of the gear and then stops; the waterproof electromagnet 611 is electrified to adsorb the gear;

[0167] S6: the fifth hydraulic cylinder 65 is retracted to drive the grabbing rod 610 to move away from the base plate 1, to drive the gear to move away from the base plate 1, so that the gear is suspended; the electric screw rod sliding table 613 drives the base column 61 to move until the vision recognition module detects that the grabbing rod 610 moves to above the cleaning pool 31 and then stops;

[0168] S7: The fifth hydraulic cylinder 65 is extended to make the grabbing rod 610 extend into the cleaning tank 31 until the visual recognition module detects that the gear is in contact with the brush of the brush plate 36, then the conveying drive module controls the second servo motor 66 to rotate to drive the grabbing rod 610 to rotate, further drive the gear to rotate in the cleaning tank 31, and the vibration motor 33 drives the brush plate 36 to vibrate at high frequency, and the brush cooperates with the brush to brush in the direction of the gear slot; then the high-pressure nozzle of the annular cleaning water pipe 37 is used for flushing to remove the residual oil stains between the teeth and the tooth root, so that the brush plate 36 brushes the gear slot of each tooth, and the conveying drive module controls the residence time of the grabbing rod 610 in the cleaning tank 31;

[0169] After the residence time of the grabbing rod 610 in the cleaning tank 31 reaches the preset time, the conveying drive module controls the fifth hydraulic cylinder 65 to retract until the visual recognition module detects that the grabbing rod 610 moves out of the cleaning tank 31 upwards and stops;

[0170] S8: The electric screw rod sliding table 613 drives the base column 61 to move until the visual recognition module detects that the grabbing rod 610 moves to above the rinsing tank 41 and stops; the fifth hydraulic cylinder 65 is extended to make the grabbing rod 610 extend into the rinsing tank 41 until the visual recognition module detects that the gear is between the rinsing water pipes 43 and stops, then the conveying drive module controls the second servo motor 66 to rotate to drive the grabbing rod 610 to rotate, further drive the gear to rotate in the rinsing tank 41, so that the rinsing nozzle flushes each surface of the gear, and the conveying drive module controls the residence time of the grabbing rod 610 between the rinsing water pipes 43;

[0171] S9: After the residence time of the grabbing rod 610 between the rinsing water pipes 43 reaches the preset time, the conveying drive module controls the fifth hydraulic cylinder 65 to retract until the visual recognition module detects that the grabbing rod 610 is located between the air pipes 42 and stops; then the conveying drive module controls the second servo motor 66 to rotate to drive the grabbing rod 610 to rotate, further drive the gear to rotate in the rinsing tank 41, so that the air jet head flushes each surface of the gear by air knife, so that the residual water stains on the surface of the gear are preliminarily removed by high-pressure airflow, and the conveying drive module controls the residence time of the grabbing rod 610 between the air pipes 42;

[0172] S10: After the residence time of the grabbing rod 610 between the air pipes 42 reaches the preset time, the conveying drive module controls the fifth hydraulic cylinder 65 to retract until the visual recognition module detects that the grabbing rod 610 is located in the rinsing tank 41 and stops;

[0173] S11: The conveying drive module controls the electric screw rod sliding table 613 to drive the base column 61 to move until the visual recognition module detects that the grabbing rod 610 moves to above the material taking plate 614 and stops;

[0174] S12: the conveying driving module controls the fifth hydraulic cylinder 65 to extend until the visual identification module detects that the grabbing rod 610 is in contact with the edge of the material taking plate 614, at this time, the gear is located in the C-shaped area of the material taking plate 614 and above the outfeed conveyor 51; the conveying driving module controls the waterproof electromagnet 611 to be powered off, and at the same time, the fourth hydraulic cylinder 63 is retracted to drive the base block 64 to move towards the side close to the base column 61, and simultaneously drive the grabbing rod 610 to move, so that the material taking plate 614 scrapes the gear on the grabbing rod 610, so that the gear falls from the grabbing rod 610 to the outfeed conveyor 51;

[0175] S13: the outfeed conveyor 51 drives the gear to move into the drying chamber 52, and the gear is subjected to hot air convection drying by the hot air fan in the drying chamber 52, and then the outfeed conveyor 51 transports the dried gear to the pre-oxidation furnace;

[0176] S14: the gear sequentially passes through the pre-oxidation furnace, the heating furnace, the heating carburizing furnace, the cooling furnace, the quenching chamber, the secondary heating furnace, the double-station quenching oil tank, the post-cleaning machine, the push-disc type tempering furnace and the air cooling table on the production line, so as to complete the carburizing heat treatment of the gear; the control system and the production line automation and computer monitoring management system control the time and temperature of the gear in each step.

[0177] The above is only the preferred embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation made under the concept of the present application, using the content of the present application specification and drawings, or directly / indirectly applied in other related technical fields are included in the patent protection range of the present application.

Claims

1. A single-row continuous pusher carburizing heat treatment front cleaning machine, characterized by, The gear cleaning device comprises a substrate arranged transversely, and a gear righting part, a gear cleaning part and a gear drying part are sequentially arranged on the substrate. The gear righting part is used for receiving gears conveyed by a feeding roller table and a conveying device and vertically righting the gears which are in a flat state. The gear cleaning part comprises a gear conveying assembly, a gear cleaning assembly and a gear rinsing assembly, and is used for cleaning the surface of the gear by brushing and rinsing. The gear rinsing assembly is used for rinsing the gear cleaned by the gear cleaning assembly. The gear drying part is used for drying the gear and conveying the dried gear into a pre-oxidation furnace. The gear conveying assembly is used for grabbing the gear in a vertical state on the gear righting part and sequentially conveying the gear into the gear cleaning assembly and the gear rinsing assembly, and finally conveying the gear into the gear drying part. The gear righting part comprises a vertical member arranged transversely on the substrate and a feeding conveyor belt connected with the substrate. The feeding conveyor belt is located on one side of the main vertical rod in the length direction, and is used for receiving materials conveyed by the feeding roller table and the conveying device and conveying the materials to the space between the main vertical rod and the auxiliary vertical rod. The main vertical rod is fixedly connected with the substrate, and the auxiliary vertical rod is slidably connected with the substrate. The side of the main vertical rod close to the auxiliary vertical rod is formed with a vertical arc surface, and the side of the auxiliary vertical rod close to the main vertical rod is a vertical surface. The vertical arc surface is inclined toward the side away from the auxiliary vertical rod in the vertical direction, and the inclination angle of the vertical arc surface gradually decreases toward the side away from the feeding conveyor belt, and finally tends to be vertical. The gear righting part further comprises a gear tilting assembly for pushing the gear to move toward the side of the vertical arc surface when the gear is located between the main vertical rod and the auxiliary vertical rod, so that the side of the gear away from the auxiliary vertical rod is upwardly inclined.

2. The single-row continuous pusher carburizing and heat treatment pre-cleaning machine according to claim 1, characterized in that, The gear tilting assembly comprises a push plate arranged on the side of the auxiliary vertical rod close to the feeding conveyor belt. The side of the push plate away from the auxiliary vertical rod to the side of the auxiliary vertical rod away from the push plate has the same length as the main vertical rod. The side of the push plate away from the main vertical rod is provided with a second hydraulic cylinder for pushing the push plate to move toward the side close to or away from the main vertical rod. The gear tilting assembly further comprises a detection driving module for driving the second hydraulic cylinder to push the push plate to move toward the side close to the main vertical rod when detecting that the gear is located between the push plate and the main vertical rod.

3. The single-rack continuous pusher carburizing and heat-treatment pre-cleaning machine according to claim 2, characterized in that, The gear pushing assembly comprises a bearing box with an open side wall, which is located on the side of the main vertical rod away from the auxiliary vertical rod, and the opening of the bearing box faces the main vertical rod, two transmission gears are rotatably arranged in the bearing box, the two transmission gears are connected through a transmission chain, the rotation directions of the two transmission gears are the same as the extending direction of the main vertical rod, a first servo motor is arranged on the side of the bearing box away from the main vertical rod, and the output shaft of the first servo motor is connected with any one of the transmission gears; The transmission chain is connected with a push rod near the opening of the bearing box, one end of the push rod near the opening of the bearing box extends out of the bearing box and extends to the space between the main vertical rod and the auxiliary vertical rod, the inner wall of the opening of the bearing box is recessed to form an annular slide, and the outer wall of the push rod is provided with a sliding block for sliding in the annular slide; The distance between the two transmission gears is greater than the length of the main vertical rod; The gear temporary storage assembly is further arranged on the side of the vertical member away from the feeding conveying belt, the gear temporary storage assembly comprises first and second limiting rods arranged in parallel, the first limiting rod is fixedly connected with the base plate, and the second limiting rod is connected with a third hydraulic cylinder for driving the second limiting rod to move towards or away from the first limiting rod on the side away from the first limiting rod; The side of the first limiting rod close to the second limiting rod is located on the same extension plane as the side of the main vertical rod, the extending direction of the first limiting rod is the same as the extending direction of the main vertical rod, and the side of the first limiting rod away from the main vertical rod is provided with a baffle for blocking the gear; The first limiting rod is in clearance fit with the main vertical rod.

4. The single-rack continuous pusher carburizing and heat-treatment pre-cleaning machine according to claim 3, characterized in that, The gear cleaning assembly comprises a cleaning pool embedded on the base plate, and the cleaning pool is located on the side of the gear temporary storage assembly away from the vertical member; The cleaning pool is provided with a vibrating plate in the transverse direction, four corners of the two sides of the vibrating plate in the transverse direction are symmetrically transversely recessed to form a plurality of sliding holes, the hole bottom of each sliding hole is provided with a spring, and the inner wall of the cleaning pool is transversely provided with a plurality of sliding rods which are correspondingly inserted into the sliding holes; the vibrating plate is formed with a mounting cavity, and the cavity wall of the mounting cavity is provided with a vibrating motor; The extending direction of the sliding hole on the vibrating plate is perpendicular to the extending direction of the first limiting rod; and the side of the vibrating plate away from the bottom of the cleaning pool is detachably provided with a brush plate with bristles; The cleaning pool is provided with an annular cleaning water pipe, the cleaning water pipe is connected with a cleaning water pump, the cleaning water pipe is located above the vibrating plate, the side of the cleaning water pipe away from the wall of the cleaning pool is provided with a plurality of cleaning nozzles, and the nozzle of the cleaning nozzle faces the center line of the brush plate to flush the gear passing through the cleaning pool.

5. The single-rack continuous pusher carburizing and heat-treatment pre-cleaning machine according to claim 4, characterized in that, The gear rinsing assembly comprises a rinsing pool embedded on the base plate, and the rinsing pool is located on the side of the cleaning pool away from the gear temporary storage assembly; The rinsing pool is provided with an annular rinsing water pipe and an annular air pipe, the air pipe is located above the rinsing water pipe, the rinsing water pipe is connected with a rinsing water pump, a plurality of rinsing nozzles are uniformly and interval distributed on the outer wall of the rinsing water pipe, and the nozzle of the rinsing nozzle faces the inner side of the rinsing water pipe. The trachea communication air pump is provided with a plurality of air jet heads which are evenly and spacedly connected to the outer wall of the trachea, and the air jet heads have their nozzles facing the inner side of the trachea.

6. The single-rack continuous pusher carburizing and heat-treatment pre-cleaning machine according to claim 5, characterized in that, The gear drying part comprises a discharging conveyor belt and a drying chamber which is arranged above the discharging conveyor belt; The drying chamber has a "H" shape structure, and the two ends of the "H" shape structure are open and located on the conveying direction of the discharging conveyor belt; the drying chamber is provided with a hot air blower which blows air towards the discharging conveyor belt; the discharging conveyor belt is located on the side of the rinsing pool which is away from the cleaning pool, and the discharging conveyor belt is used to convey the gear to a pre-oxidation furnace.

7. The single-rack continuous pusher carburizing and heat-treatment pre-cleaning machine according to claim 6, characterized in that, The gear conveying assembly comprises a base column which is vertically and slidably arranged on a base plate; the sliding direction of the base column is the same as the distribution direction of the cleaning pool and the rinsing pool; the base plate is provided with an electric screw sliding table which is used to drive the base column to move on the base plate; the end of the base column which is away from the base plate is transversely provided with a large arm which extends above the distribution direction of the cleaning pool and the rinsing pool; the large arm is slidably provided with a base block on the lower side thereof; the side of the base block which is close to the base column is connected with a fourth hydraulic cylinder which is used to drive the base block to move towards or away from the side of the base column; a mounting plate is arranged below the base block; the mounting plate and the base block are connected through a fifth hydraulic cylinder which is used to drive the mounting plate to ascend or descend towards or away from the side of the base block; the end of the base column which is close to the base plate is provided with an anti-falling plate which is reversely buckled on the bottom of the base plate, and the anti-falling plate is used to prevent the base column from falling over; A second servo motor is mounted on the mounting plate; the output shaft of the second servo motor faces away from the side of the base block; the output shaft of the second servo motor is connected with a grabbing rod which is arranged transversely through a right-angle transmission box; the grabbing rod is located on the side of the right-angle transmission box which is away from the base column, and the direction of the grabbing rod is the same as the direction of the large arm; A waterproof electromagnet is embedded on the grabbing rod; the outer wall of the grabbing rod is provided with a waterproof conductive slip ring which is used to supply power to the waterproof electromagnet; the side of the discharging conveyor belt which is close to the rinsing pool is provided with a "C" shaped material taking plate; the "C" shaped opening of the material taking plate faces the drying chamber; the material taking plate is located on the conveying path of the discharging conveyor belt; The gear conveying assembly further comprises a visual recognition module and a conveying driving module; The conveying driving module is used to control the working of the fourth hydraulic cylinder, the fifth hydraulic cylinder, the second servo motor, the electric screw sliding table and the waterproof electromagnet; The visual recognition module is used to collect and analyze images of the gear which is located between the first limiting rod and the second limiting rod, detect the center hole of the gear and determine the spatial coordinates of the axis of the gear; Based on the spatial coordinates of the axis, a moving control instruction is generated and sent to the conveying driving module; the conveying driving module schedules the grabbing rod to extend into the center hole of the gear along the axis of the center hole of the gear; the waterproof electromagnet is powered on to realize the grabbing of the gear.

8. Single-row continuous pusher carburizing heat treatment line, characterized in that, The application is applied to the front cleaning machine of any one of claims 1-7; the carburizing heat treatment production line for carburizing treatment of gears, wherein the device for carburizing treatment of gears comprises an upper and lower feeding roller table and conveying device, a front cleaning machine, a pre-oxidation furnace, a heating furnace, a heating carburizing furnace, a cooling furnace, a quenching chamber, a secondary heating furnace, a double-station quenching oil tank, a rear cleaning machine, a push disc type tempering furnace and an air cooling table which are sequentially connected and make the gears sequentially pass through and be heat treated; the application also comprises a control system and a production line automation and computer monitoring management system for controlling the upper and lower feeding roller table and conveying device, the front cleaning machine, the pre-oxidation furnace, the heating furnace, the heating carburizing furnace, the cooling furnace, the quenching chamber, the secondary heating furnace, the double-station quenching oil tank, the rear cleaning machine, the push disc type tempering furnace and the air cooling table respectively. The application adopts the single-row continuous push disc carburizing heat treatment production line of claim 8, comprising the following steps:

9. A single-row continuous pusher carburizing heat treatment method, characterized by, S1: the upper and lower feeding roller table and conveying device convey the gears to the feeding conveying belt; S2: the first hydraulic cylinder is used to adjust the distance between the main vertical rod and the auxiliary vertical rod to adapt to the thickness of the gears; S3: the feeding conveying belt conveys the gears to the space between the push plate and the main vertical rod, the detection driving module detects that the gears are located between the push plate and the main vertical rod, and then drives the second hydraulic cylinder to push the push plate to move towards the side close to the main vertical rod, pushes the gears to incline, and makes the gears gradually stand up under the action of the vertical curved surface under the pushing of the gear pushing assembly; S4: the visual recognition module collects the image of the gears after standing up and determines the spatial coordinates of the central circular hole; S5: after the visual recognition module recognizes the position of the gear circular hole, the conveying driving module drives the base column through the control of the electric screw slide table until the visual recognition module detects that the grabbing rod moves to the top of the central circular hole axis of the gear and then stops; then the fifth hydraulic cylinder is controlled to extend to drive the grabbing rod to descend until the visual recognition module detects that the axis of the grabbing rod coincides with the central circular hole axis of the gear and then stops; after the axis of the grabbing rod coincides with the central circular hole axis of the gear, the fourth hydraulic cylinder drives the base block to move away from the base column until the visual recognition module detects that the grabbing rod extends into the central circular hole of the gear and then stops; the waterproof electromagnet is electrified to adsorb the gear; S6: the fifth hydraulic cylinder is retracted to drive the grabbing rod to move away from the base plate to drive the gear to move away from the base plate to make the gear hang in the air; the electric screw slide table drives the base column to move until the visual recognition module detects that the grabbing rod moves to the top of the cleaning pool and then stops; S7: the fifth hydraulic cylinder extends to make the grabbing rod extend into the cleaning pool until the visual recognition module detects that the gear contacts the brush of the brush plate, then the conveying driving module controls the second servo motor to rotate to drive the grabbing rod to rotate, further drives the gear to rotate in the cleaning pool, and the vibration motor drives the brush plate to vibrate at a high frequency to cooperate with the brush to brush along the direction of the gear slot; then the high-pressure nozzle of the annular cleaning water pipe is used for flushing to remove the residual oil in the gear and the gear root to make the brush plate brush the gear slots of the gear, and the conveying driving module controls the residence time of the grabbing rod in the cleaning pool. ​ The time of the grabbing rod staying in the cleaning pool reaches the preset time, and the conveying driving module controls the fifth hydraulic cylinder to retract until the visual recognition module detects that the grabbing rod moves out of the cleaning pool upward and stops; S8: The electric screw rod sliding table drives the base column to move until the visual recognition module detects that the grabbing rod moves to above the rinsing pool and stops; the fifth hydraulic cylinder extends to make the grabbing rod extend into the rinsing pool until the visual recognition module detects that the gear is located between the rinsing water pipes and stops, and then the conveying driving module controls the second servo motor to rotate to drive the grabbing rod to rotate, further drive the gear to rotate in the rinsing pool, so that the rinsing nozzle flushes each face of the gear, and the conveying driving module controls the staying time of the grabbing rod between the rinsing water pipes; S9: The time of the grabbing rod staying between the rinsing water pipes reaches the preset time, and the conveying driving module controls the fifth hydraulic cylinder to retract until the visual recognition module detects that the grabbing rod is located between the air pipes and stops; then the conveying driving module controls the second servo motor to rotate to drive the grabbing rod to rotate, further drive the gear to rotate in the rinsing pool, so that the air jet head flushes each face of the gear with the air knife, to preliminarily remove the water stains remaining on the surface of the gear through the high-pressure airflow, and the conveying driving module controls the staying time of the grabbing rod between the air pipes; S10: The time of the grabbing rod staying between the air pipes reaches the preset time, and the conveying driving module controls the fifth hydraulic cylinder to retract until the visual recognition module detects that the grabbing rod is located in the rinsing pool and stops; S11: The conveying driving module controls the electric screw rod sliding table to drive the base column to move until the visual recognition module detects that the grabbing rod moves to above the material taking plate and stops; S12: The conveying driving module controls the fifth hydraulic cylinder to extend until the visual recognition module detects that the grabbing rod contacts the edge of the material taking plate, at this time, the gear is located in the C-shaped area of the material taking plate and above the discharging conveyor belt; the conveying driving module controls the waterproof electromagnet to be powered off, and the fourth hydraulic cylinder retracts to drive the base block to move towards the side close to the base column, and simultaneously drive the grabbing rod to move, so that the material taking plate scrapes the gear on the grabbing rod, so that the gear falls from the grabbing rod to the discharging conveyor belt; S13: The discharging conveyor belt drives the gear to move into the drying chamber, and the hot air machine in the drying chamber performs hot air convection drying on the gear, and then the discharging conveyor belt conveys the dried gear to the pre-oxidation furnace; S14: The gear sequentially passes through the pre-oxidation furnace, the heating furnace, the heating carburizing furnace, the cooling furnace, the quenching chamber, the secondary heating furnace, the double-station quenching oil tank, the post-cleaning machine, the push-disc type tempering furnace and the air cooling table on the production line, to complete the carburizing heat treatment of the gear; the control system and the production line automation and computer monitoring and management system control the time and temperature of the gear in each step.

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