Automatic equipment for hub bearing afterheat normalizing

Abstract

The utility model relates to hub bearing heat treatment equipment, and discloses hub bearing afterheat normalizing automation equipment which comprises a rack, a first conveying device, a first fan set, a second fan set, a heat preservation device and a mechanical arm. The first fan unit and the second fan unit are both mounted on the rack, the first fan unit is used for rapid cooling, and the second fan unit is used for slow cooling; the heat preservation device is installed on the machine frame and arranged between the first fan unit and the second fan unit. And the manipulator is arranged between the first fan set and the heat preservation device and is used for grabbing the hub bearing which does not meet the afterheat normalizing requirement on the first conveying device. According to the equipment, the cooling process can be accurately controlled, it is ensured that hub bearings of different batches can obtain the stable cooling effect, the quality problem caused by uneven cooling or improper cooling speed is reduced, and the stability of the product quality is improved. And meanwhile, automatic sorting and collecting of the hub bearings which do not meet the waste heat normalizing condition are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wheel hub bearing heat treatment equipment especially relates to a kind of automation equipment of wheel hub bearing afterheat normalizing. BACKGROUND

[0002] Automobile wheel hub bearing forging is a kind of high-precision and high-strength manufacturing process, for producing the key component for supporting wheel hub rotation. After its forging product, temperature drops, in its subsequent heat treatment process, normalizing heats product again, which not only prolongs production time but also increases energy consumption.

[0003] In the field of wheel hub bearing unit ring manufacturing, the existing forging afterheat normalizing process has some deficiencies. For example, in the utility model of patent No. CN201510706069.0, although the base hardness and strength of wheel hub bearing unit ring are improved by controlling the temperature, forging time and cooling time and temperature, and the grain is refined, but in actual operation, the automation degree of the process is low, mainly relying on manual operation and simple cooperation of equipment, which limits the production efficiency, and in the cooling process, there is lack of fine temperature control of forging, and the consistency of cooling effect is difficult to guarantee, which further affects the stability of product quality. In addition, for forgings that do not meet the requirements of afterheat normalizing, there is no effective automatic identification and sorting mechanism, which easily leads to unqualified products mixed into qualified products, reducing the overall quality of products. Therefore, a more advanced automation equipment and process of wheel hub bearing afterheat normalizing are needed to overcome the defects in the prior art and improve production efficiency and product quality. SUMMARY

[0004] The utility model provides a kind of automation equipment of wheel hub bearing afterheat normalizing in view of the shortcomings in the prior art.

[0005] To solve the above technical problems, the utility model solves by the following technical scheme:

[0006] A kind of automation equipment of wheel hub bearing afterheat normalizing, comprising:

[0007] frame,

[0008] First conveying device, first conveying device is installed on rack and is used to convey wheel hub bearing;

[0009] First fan set and second fan set, first fan set and second fan set are both installed on rack, first fan set is used to cool wheel hub bearing quickly, and second fan set is used to cool wheel hub bearing slowly;

[0010] Heat preservation device, heat preservation device is installed on rack and is located between first fan set and second fan set, and heat preservation device is used to heat preservation for wheel hub bearing;

[0011] The robotic arm is located between the first fan unit and the insulation device. The robotic arm is used to grab wheel hub bearings on the first conveying device that do not meet the requirements of residual heat normalization.

[0012] The first material bin is located around the robot arm and is used to receive defective products. The second material bin is located at the other end of the first conveying device and is used to receive wheel bearings after slow cooling.

[0013] Preferably, the first conveying device includes a first conveyor belt, a first driving roller, a first driven roller, and a first motor. One end of the first conveyor belt is wound around the first driving roller, and the other end is wound around the first driven roller. The first motor is connected to the first driving roller and drives it to rotate.

[0014] Preferably, a second conveying device is also installed on the frame. The second conveying device is located at the front end of the first conveying device. The second conveying device is used to convey the wheel hub bearing and transfer it to the first conveying device. The second conveying device includes a second conveyor belt, which is provided with at least one positioning groove for positioning the wheel hub bearing in its placement state.

[0015] Preferably, the first fan unit includes at least two first fans, which are mounted on a frame via a first support. A first temperature detection device for detecting the temperature at the bottom of the wheel hub bearing is installed on the frame. The first temperature detection device transmits temperature information to the controller in real time, and the controller controls the speed and cooling time of the first fans based on the temperature information.

[0016] Preferably, the second fan unit includes at least two second fans, which are mounted on a frame via a second support. A second temperature detection device for detecting the temperature at the bottom of the hub bearing is installed on the frame. The second temperature detection device transmits temperature information to the controller in real time, and the controller controls the speed and cooling time of the second fans based on the temperature information.

[0017] Preferably, a third conveying device for conveying wheel hub bearings is installed above the first conveying device. The third conveying device is located between the robot and the heat preservation device, and the discharge end of the third conveying device extends to the first material box.

[0018] Preferably, the first conveying device passes through the heat preservation device, which is equipped with a heating element to maintain the set temperature of the wheel hub bearing.

[0019] This utility model, by adopting the above technical solution, has significant technical effects:

[0020] By setting the first fan group and the second fan group, the hub bearing is rapidly cooled and slowly cooled respectively, and the intermediate heat preservation device can accurately control the cooling process, ensure that different batches of hub bearings can obtain stable cooling effect, reduce quality problems caused by uneven cooling or improper cooling speed, and improve the stability of product quality.

[0021] The mechanical hand and the first material box are arranged, automatic sorting and collection of the hub bearing not meeting the tempering condition are realized, compared with the traditional manual sorting mode, the automatic sorting and collection are more accurate and efficient, the residence time of unqualified products on the production line is reduced, the unqualified products are convenient for centralized treatment and analysis, and the production process is improved.

[0022] The hub bearing can obtain fine and uniform ferrite network after finish forging through the equipment, the ferrite content is between 10% and 25%, the hardness is above 220HB, the grain size is above 5 levels, the elongation after fracture is above 13%, and the reduction of area is above 35%. Through the automatic production of the product, the proportion of ferrite and pearlite (F+P) is accurately balanced, and the standard meeting the industrial production is reached. The production line realizes automatic production, and the purposes of saving energy, improving product production efficiency and reducing cost are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] The part names referred to by the numbers in the above drawings are as follows:

[0025] 10 - rack

[0026] 11 - first conveying device, 111 - first conveying, 112 - first driving roller, 113 - first driven roller 12 - first fan group, 121 - first fan, 122 - first support

[0027] 13 - second fan group, 131 - second fan, 132 - second support

[0028] 14 - heat preservation device

[0029] 15 - mechanical hand

[0030] 16 - first material box

[0031] 17 - second material box

[0032] 18 - second conveying device, 181 - second conveying belt, 182 - positioning groove, 183 - second driving roller, 184 - second driven roller

[0033] 19 - third conveying device DETAILED DESCRIPTION

[0034] The utility model will be further described in detail in combination with the drawings Figure 1 The utility model will be further described in detail in combination with the drawings

[0035] Embodiment 1

[0036] An automatic equipment for wheel hub bearing afterheat normalizing, comprising:

[0037] A rack 10,

[0038] A first conveying device 11 is installed on the rack 10 and used for conveying wheel hub bearings;

[0039] A first fan group 12 and a second fan group 13 are both installed on the rack 10, the first fan group 12 is used for rapidly cooling the wheel hub bearings, and the second fan group 13 is used for slowly cooling the wheel hub bearings; the first fan group 12, the second fan group 13 and the heat preservation device 14 cooperate with each other, can accurately control the temperature change and the cooling speed in the cooling process of the wheel hub bearings, ensure the consistency of product quality, and avoid performance differences caused by improper cooling.

[0040] A heat preservation device 14 is installed on the rack 10 and arranged between the first fan group 12 and the second fan group 13, and the heat preservation device 14 is used for heat preservation of the wheel hub bearings;

[0041] A manipulator 15 is installed on the rack 10, and the rack 10 is provided with the manipulator on both sides, the manipulator 15 is arranged in the area between the first fan group 12 and the heat preservation device 14, and the manipulator 15 is used for grabbing the wheel hub bearings not meeting the afterheat normalizing on the first conveying device 11; the first conveying device 11 realizes automatic conveying, the manipulator 15 can quickly sort out unqualified products, reduces the influence of unqualified products on subsequent processes, and the whole equipment cooperates to make the afterheat normalizing process efficient and improve production efficiency.

[0042] A first material box 16 and a second material box 17, the first material box 16 is arranged around the manipulator 15 and used for receiving unqualified products, and the second material box 17 is arranged at the other end of the first conveying device 11 and used for receiving the wheel hub bearings after slow cooling, and the qualified wheel hub bearings are all stacked and cooled in the second material box 17. The arrangement of the manipulator 15 and the first material box 16 realizes automatic sorting and collection of unqualified products, facilitates centralized treatment of unqualified products, and is convenient for analyzing and summarizing unqualified reasons, so as to optimize the production process.

[0043] Working principle: the hub bearing is placed on the first conveying device 11, and moves on the frame 10 as the first conveying device 11 operates. When the hub bearing moves to the area of the first fan set 12, the first fan set 12 starts to cool it rapidly, and the cooling time is 75-100s. After cooling, the temperature of the hub bearing meets the temperature range of 800-840℃. The temperature of each part is detected in real time by the first temperature detection device after cooling. Then, the hub bearing enters the heat preservation device 14, and is maintained at a specific temperature in the heat preservation device 14. The heat preservation temperature is set at 700-820℃, and the heat preservation time is 5-10min. Next, it reaches the area of the second fan set 13, and the second fan set 13 cools it slowly. The slow cooling time is 190-205s, and the temperature of the hub bearing forging is reduced to 540-600℃. In the area between the first fan set 12 and the heat preservation device 14, the mechanical hands 15 on both sides detect the hub bearing on the first conveying device 11. If the hub bearing does not meet the temperature requirement of the normalizing, the mechanical hands 15 will grab it and put it into the first bin 16. If the hub bearing meets the cooling process, it will be finally conveyed to the other end of the first conveying device 11 after slow cooling, and falls into the second bin 17 for stack cooling. The stack cooling time is more than 8h until the hub bearing reaches room temperature.

[0044] The first conveying device 11 comprises a first conveying belt 111, a first driving roller 112, a first driven roller 113 and a first motor. One end of the first conveying belt 111 is wound around the first driving roller 112, and the other end is wound around the first driven roller 113. The first motor is connected with the first driving roller 112 and drives it to rotate. The first conveying belt 111, the first driving roller 112 and the first driven roller 113 cooperate with each other to form a stable conveying structure. The first driving roller 112 rotates under the drive of the first motor, drives the first conveying belt 111 to circulate, and thus stably conveys the hub bearing, ensuring the continuity of the production process.

[0045] The rack 10 is also provided with a second conveying device 18 arranged at the front end of the first conveying device 11, which is used to convey the hub bearing and deliver it to the first conveying device 11. The second conveying device 18 comprises a second conveying belt 181, a second driving roller 183, a second driven roller 184 and a second motor. One end of the second conveying belt 181 is wound around the second driving roller 183, and the other end of the second conveying belt 181 is wound around the second driven roller 184. The second motor is connected with the second driving roller 183 and drives the rotation of the second driving roller 183. The second conveying belt 181 is provided with at least one positioning groove 182 for positioning the placement state of the hub bearing. In the embodiment, the number of the positioning grooves 182 is two. The hub bearing positioned by the positioning grooves 182 can be conveyed upright to the first conveying belt 111. The positioning grooves 182 provided on the second conveying belt 181 and the two positioning grooves 182 in the embodiment can accurately position the placement state of the hub bearing, so that the hub bearing can be conveyed upright to the first conveying belt 111. The standard conveying posture can ensure that each part of the hub bearing is uniformly treated in the subsequent rapid cooling, heat preservation and slow cooling processes, thereby improving the stability of product quality.

[0046] The first fan set 12 comprises at least two first fans 121, and the number of the first fans 121 in the embodiment is three. The first fans 121 are installed on the rack 10 through first supports 122. The rack 10 is provided with a first temperature detection device for detecting the temperature at the bottom of the hub bearing. The first temperature detection device is an infrared sensor. The first temperature detection device transmits temperature information to the controller in real time. The controller controls the rotating speed and cooling time of the first fans 121 according to the temperature information. The infrared sensor installed on the rack 10 is used as the first temperature detection device to detect the temperature at the bottom of the hub bearing in real time and transmit the temperature information to the controller. The controller accurately controls the rotating speed and cooling time of the first fans 121 according to the real-time temperature data, so that the temperature of the hub bearing is always in a suitable range during the rapid cooling process, thereby avoiding the influence of excessive or insufficient cooling on product performance and ensuring the stability of product quality.

[0047] The second fan group 13 includes at least two second fans 131, and the number of the second fans 131 is three. The second fans 131 are installed on the rack 10 through second supports 132. A second temperature detection device for detecting the temperature at the bottom of the hub bearing is installed on the rack 10. The second temperature detection device is an infrared sensor. The second temperature detection device transmits temperature information to the controller in real time. The controller controls the rotating speed and cooling time of the second fans 131 according to the temperature information. The second fan group 13 is equipped with three second fans 131. The multiple fans work cooperatively to generate stable and suitable cooling air flow, meeting the process requirements for slow cooling of the hub bearing. The second temperature detection device monitors the temperature at the bottom of the hub bearing in real time and transmits information to the controller. The controller accurately controls the rotating speed and cooling time of the second fans 131 according to the information, ensuring that the cooling process is accurately controllable, avoiding the influence of improper cooling speed on product performance, and effectively ensuring the stability of product quality.

[0048] A third conveying device 19 for conveying the hub bearing is installed above the first conveying device 11. The third conveying device 19 includes a third conveying belt, a third driving roller, a third driven roller, and a third motor. One end of the third conveying belt passes through the third driving roller, and the other end of the third conveying belt passes through the third driven roller. The third motor is connected to and drives the third driving roller to rotate. The third conveying device 19 is arranged between the manipulator 15 and the heat preservation device 14, and the discharge end of the third conveying device 19 extends to the first hopper 16. The third conveying device 19 is installed above the first conveying device 11 and arranged between the manipulator 15 and the heat preservation device 14, which opens an independent conveying channel for the hub bearings that do not meet the intercritical annealing requirements. This allows the unqualified products to be quickly and smoothly diverted from the production process, avoiding the accumulation and interference of unqualified products on the main conveying line, ensuring the continuity of the first conveying device 11 for conveying normal products, optimizing the overall conveying path, and improving production efficiency.

[0049] The first conveying device 11 passes through the heat preservation device 14. The heat preservation device 14 is provided with a heating element for maintaining the set temperature of the hub bearing. The heating element is a heating pipe. The heating element arranged on the heat preservation device 14 can maintain the set temperature of the hub bearing, ensuring that the hub bearing can maintain a certain temperature for a period of time after being quickly cooled by the first fan group 12, meeting the temperature and time requirements of the intercritical annealing process, improving the stability of product quality, and avoiding the influence of rapid temperature change or insufficient heat preservation on product performance.

Claims

1. An automated apparatus for post-heat normalizing of hub bearings, characterized by The utility model relates to a kind of wheel hub bearing cooling device, including: Rack (10), First conveying device (11), first conveying device (11) is installed on rack (10) and is used to convey wheel hub bearing; First fan group (12) and second fan group (13), first fan group (12) and second fan group (13) are both installed on rack (10), first fan group (12) is used to carry out quick cooling to wheel hub bearing, and second fan group (13) is used to carry out slow cooling to wheel hub bearing; Heat preservation device (14), heat preservation device (14) is installed on rack (10) and is located between first fan group (12) and second fan group (13), and heat preservation device (14) is used to keep warm to wheel hub bearing; Mechanical hand (15), mechanical hand (15) is located between first fan group (12) and heat preservation device (14), and mechanical hand (15) is used to grab the wheel hub bearing that does not meet the residual temperature normalizing on first conveying device (11); First bin (16) and second bin (17), first bin (16) is located at the periphery of mechanical hand (15) and is used to receive unqualified product, and second bin (17) is located at the other end of first conveying device (11) and is used to receive wheel hub bearing after slow cooling.

2. The automated wheel bearing post-heat treatment normalizing apparatus of claim 1, wherein: First conveying device (11) includes first conveying belt (111), first driving roller (112), first driven roller (113) and first motor, first conveying belt (111) one end is wound on first driving roller (112), and its other end is wound on first driven roller (113), and first motor is connected with first driving roller (112) and drives it to rotate.

3. The automated wheel bearing post-heat treatment normalizing apparatus of claim 2, wherein: Rack (10) is also installed with second conveying device (18), and second conveying device (18) is located at the front end of first conveying device (11), and second conveying device (18) is used to convey wheel hub bearing and is passed to first conveying device (11), and second conveying device (18) includes second conveying belt (181), and second conveying belt (181) is provided with at least one positioning groove (182) for positioning the placement state of wheel hub bearing.

4. The automated wheel bearing post-heat treatment normalizing apparatus of claim 1, wherein: First fan group (12) includes at least two first fans (121), and first fan (121) is installed on rack (10) by first support (122), and first temperature detection device for detecting the temperature of the bottom of wheel hub bearing is installed on rack (10), and first temperature detection device transmits temperature information to controller in time, and controller controls the rotating speed and cooling time of first fan (121) according to temperature information.

5. The automated wheel bearing post-heat treatment normalizing apparatus of claim 4, wherein: Second fan group (13) includes at least two second fans (131), and second fan (131) is installed on rack (10) by second support (132), and second temperature detection device for detecting the temperature of the bottom of wheel hub bearing is installed on rack (10), and second temperature detection device transmits temperature information to controller in time, and controller controls the rotating speed and cooling time of second fan (131) according to temperature information.

6. The automated wheel bearing post-heat treatment normalizing apparatus of claim 1, wherein: A third conveying device (19) for conveying hub bearings is arranged above the first conveying device (11), and the third conveying device (19) is arranged between the mechanical arm (15) and the heat preservation device (14), with the discharge end of the third conveying device (19) extending to the first hopper (16).

7. The automated wheel bearing post-heat treatment normalizing apparatus of claim 1, wherein: The first conveying device (11) passes through the heat preservation device (14), and the heat preservation device (14) is provided with a heating element for maintaining the hub bearings at a set temperature.

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