A heat treatment front bearing ring stacking device and method

Abstract

The application belongs to the technical field of bearing ring stacking, and provides a bearing ring stacking device and method before heat treatment, wherein a first limiting mechanism and a second limiting mechanism are arranged on a conveying mechanism; an identification mechanism is arranged at the first limiting mechanism on the conveying mechanism, and a turnover mechanism is further arranged between the first limiting mechanism and the second limiting mechanism; when the bearing ring on the conveying mechanism reaches the first limiting mechanism, the identification mechanism judges whether the bearing ring needs to be turned over; when the bearing ring needs to be turned over, the turnover mechanism is used to turn over the bearing ring after passing through the first limiting mechanism; automatic turnover of the bearing ring during stacking before heat treatment is realized after identification, the problem of incorrect stacking of the bearing end face is solved, and the uniformity and stability of the bearing ring stacking are realized by the first limiting mechanism and the second limiting mechanism.

Description

Technical Field

[0001] This invention belongs to the field of bearing ring stacking technology, and particularly relates to a bearing ring stacking device and method before heat treatment. Background Technology

[0002] As one of the four major components of a bearing, the bearing ring provides a certain degree of support. After the inner and outer rings of a tapered roller bearing are formed, they need to be manually and evenly placed face down on the thicker end of the inner or outer ring into a stacking frame to reduce deformation during heat treatment. Subsequently, the bearing rings in the stacking frame are subjected to concentrated heat treatment to improve the performance of the parts.

[0003] The inventors discovered that when using existing technologies such as manual placement or traditional automatic stacking equipment to stack bearing rings, there are problems such as incorrect placement of bearing end faces, uneven stacking, instability of bearing rings after placement, and rings falling during the conveying into the heat treatment furnace. These problems will affect the performance of subsequent heat treatment, and the tedious picking, bending and stacking operations also require a great deal of labor intensity from the workers. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a bearing ring stacking device and method before heat treatment. After identification, it achieves automatic flipping during the stacking of bearing rings before heat treatment, solving the problem of incorrect bearing end face stacking. Furthermore, the first and second limiting mechanisms ensure the uniformity and stability of bearing ring stacking.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a bearing ring stacking device before heat treatment, which adopts the following technical solution:

[0006] A bearing ring stacking device before heat treatment includes a conveying mechanism, wherein a first limiting mechanism and a second limiting mechanism are provided on the conveying mechanism.

[0007] The conveying mechanism is provided with an identification mechanism at the first limiting mechanism and a flipping mechanism at the position between the first limiting mechanism and the second limiting mechanism. When the bearing ring on the conveying mechanism reaches the first limiting mechanism, the identification mechanism determines whether the bearing ring needs to be flipped. If it needs to be flipped, the flipping mechanism flips the bearing ring after it has passed the first limiting mechanism.

[0008] Furthermore, the conveying mechanism includes a support frame and a conveyor belt disposed on the support frame; the first limiting mechanism, the second limiting mechanism and the flipping mechanism are disposed on the support frame.

[0009] Further, the first limiting mechanism and the second limiting mechanism each include two limiting rods parallel to the length direction of the conveying belt, and a guide rod is arranged on each of the two limiting rods.

[0010] Further, the turnover mechanism includes a horizontal moving mechanism, vertical mechanisms arranged on the horizontal moving mechanism and the conveying mechanism respectively, rotating mechanisms arranged on the two vertical mechanisms respectively, and clamping jaws arranged on the two rotating mechanisms respectively.

[0011] Further, the output end position of the conveying mechanism is also provided with a stacking mechanism, a feeding frame mechanism, a reversing and moving mechanism, and an output roller mechanism.

[0012] Further, the stacking mechanism includes a strip-shaped stacking mechanism and a rectangular stacking mechanism.

[0013] Further, the strip-shaped stacking mechanism includes a first driving mechanism, a second driving mechanism, and a third driving mechanism perpendicular to each other, and a strip-shaped electromagnet arranged on the third driving mechanism.

[0014] Further, the rectangular stacking mechanism includes a fourth driving mechanism, a fifth driving mechanism, and a sixth driving mechanism perpendicular to each other, and a rectangular electromagnet arranged on the sixth driving mechanism.

[0015] Further, the reversing and moving mechanism includes a rotary air cylinder, a rotary platform arranged on the rotary air cylinder, a roller motor arranged on the rotary platform, a sprocket arranged on the roller motor, and a roller connected to the sprocket through a chain.

[0016] In order to achieve the above-mentioned purpose, in a second aspect, the application further provides a bearing ring stacking method before heat treatment.

[0017] A bearing ring stacking method before heat treatment uses the bearing ring stacking device before heat treatment as described in the first aspect, and includes: the identification mechanism judging whether the bearing ring needs to be turned over, and when the bearing ring needs to be turned over, the turnover mechanism is used to turn over the bearing ring after passing through the first limiting mechanism.

[0018] Compared with the prior art, the application has the following beneficial effects:

[0019] 1. The first limiting mechanism and the second limiting mechanism are arranged on the conveying mechanism; the recognition mechanism is arranged at the first limiting mechanism on the conveying mechanism, and the turnover mechanism is further arranged at the position between the first limiting mechanism and the second limiting mechanism; when the bearing sleeve ring on the conveying mechanism reaches the first limiting mechanism, the recognition mechanism judges whether the bearing sleeve ring needs to be turned over; when the bearing sleeve ring needs to be turned over, the turnover mechanism is used for turning over the bearing sleeve ring after passing through the first limiting mechanism; the automatic turnover of the bearing sleeve ring during the stacking before heat treatment is realized, the problem of the stacking direction error is solved, and the uniformity and stability of the bearing sleeve ring stacking are realized by the first limiting mechanism and the second limiting mechanism.

[0020] 2. The device can be directly connected with the previous bearing sleeve ring processing procedure, and after the automatic recognition, automatic adjustment and automatic sequential stacking into the material frame, the full-material-frame conveying of the bearing sleeve ring into the subsequent heat treatment procedure can be realized, and human intervention is not needed during the conveying, so that the labor intensity of manual operation is greatly reduced, the stacking direction error is avoided, and the working efficiency and the stacking position accuracy are improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings constituting a part of this embodiment are used to provide further understanding of this embodiment, and the schematic embodiment and the description thereof are used to explain this embodiment, and do not constitute improper limitation on this embodiment.

[0022] Figure 1 It is a whole structure schematic view of the embodiment 1 of the present application;

[0023] Figure 2 It is a bearing sleeve ring scanning schematic view of the embodiment 1 of the present application;

[0024] Figure 3 It is a conveying belt part and limiting mechanism schematic view of the embodiment 1 of the present application;

[0025] Figure 4 It is a blocking state of the turnover mechanism of the embodiment 1 of the present application;

[0026] Figure 5 It is a turnover state of the turnover mechanism of the embodiment 1 of the present application;

[0027] Figure 6 It is a jaw driving mechanism schematic view of the embodiment 1 of the present application;

[0028] Figure 7 It is a jaw schematic view of the embodiment 1 of the present application;

[0029] Figure 8 It is a strip stacking mechanism schematic view of the embodiment 1 of the present application;

[0030] Figure 9Figure 2 is a schematic view of a rectangular code placing mechanism according to an embodiment of the present application;

[0031] Figure 10 Figure 3 is a schematic view of a feeding frame, reversing and moving mechanism and output roller mechanism according to an embodiment of the present application;

[0032] Figure 11 Figure 4 is a schematic view of a reversing and moving mechanism according to an embodiment of the present application;

[0033] Figure 12 Figure 5 is a schematic view of an electrical connection according to an embodiment of the present application;

[0034] In the figure, 1 is a conveying mechanism; 101 is a conveying belt; 1011 is a first conveying belt; 1012 is a second conveying belt; 1013 is a third conveying belt; 102 is a support frame; 2 is a limiting mechanism; 201 is a first limiting mechanism; 202 is a second limiting mechanism; 3 is an identification mechanism; 301 is a line laser sensor; 302 is a support frame; 4 is a turnover mechanism; 401 is a first servo motor; 402 is a screw guide rail pair; 403 is a nut pair; 404 is a cylinder; 405 is a second servo motor; 406 is a clamping jaw; 407 is a base; 408 is a bearing; 409 is a first fixed block; 410 is a shaft coupling; 411 is a second fixed block; 5 is a bar code placing mechanism; 501 is a gantry frame; 502 is a bar electromagnet; 503 is a third servo motor; 504 is a fourth servo motor; 505 is a fifth servo motor; 506 is a sixth servo motor; 6 is a rectangular code placing mechanism; 601 is a rectangular electromagnet; 602 is a seventh servo motor; 603 is an eighth servo motor; 604 is a ninth servo motor; 605 is a tenth servo motor; 7 is a feeding frame mechanism; 8 is a reversing and moving mechanism; 9 is an output roller mechanism; 801 is a rotating cylinder; 802 is a rotating platform; 804 is a roller motor; 803 is a sprocket; 805 is a roller. DETAILED DESCRIPTION

[0035] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0036] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0037] Embodiment 1

[0038] When the bearing ring is placed by means of the existing technology such as manual placement or traditional automatic stacking equipment, there are problems such as incorrect stacking of the bearing end face, uneven stacking, instability of the bearing ring after placement, and falling of the ring during conveying into the heat treatment furnace, which will affect the performance of subsequent heat treatment, and the tedious picking, bending and stacking operations also have a very large labor intensity requirement on the workers.

[0039] In view of the above problems, as shown in Figure 1 and Figure 2 , the embodiment provides a bearing ring stacking device before heat treatment, which can identify the initial state of the bearing ring placement, automatically flip the bearing ring in random forward or reverse direction, make the thick size end face of the ring downward, then automatically layer and uniformly stack the bearing ring in the frame, and automatically convey the frame with completed multi-layer stacking to the subsequent heat treatment furnace equipment. The device comprises a conveying mechanism 1, a limiting mechanism 2 is arranged on the conveying mechanism 1, the limiting mechanism 2 comprises a first limiting mechanism 201 and a second limiting mechanism 202;

[0040] An identification mechanism 3 is arranged on the conveying mechanism 1 at the first limiting mechanism 201, and a flipping mechanism 4 is further arranged between the first limiting mechanism 201 and the second limiting mechanism 202; when the bearing ring 10 on the conveying mechanism 1 reaches the first limiting mechanism 201, the identification mechanism 3 judges whether the bearing ring 10 needs to be flipped, and when it needs to be flipped, the bearing ring 10 after passing through the first limiting mechanism 201 is flipped by the flipping mechanism 4; the automatic flipping of the bearing ring before heat treatment is realized after identification, the problem of incorrect stacking of the bearing end face is solved, and the first limiting mechanism 201 and the second limiting mechanism 202 realize the uniformity and stability of the bearing ring stacking.

[0041] As shown in Figure 3 , the conveying mechanism 1 comprises a support frame 102 and a conveying belt 101 arranged on the support frame 102; the first limiting mechanism 201, the second limiting mechanism 202 and the flipping mechanism 4 are arranged on the support frame 102. It can be understood that the bearing ring 10 first passes through the first limiting mechanism 201 under the conveying of the conveying belt 101, so that the bearing ring 10 reaches the flipping mechanism 4 at the middle position of the conveying belt 101, facilitating the execution of the flipping action and ensuring the correctness of the bearing end face; the plurality of bearing rings 10 are arranged side by side through the second limiting mechanism 202, improving the stacking uniformity.

[0042] Optionally, the recognition mechanism 3 comprises a support frame 302 and a line laser sensor 301 arranged on the support frame 302. After the adjustment of the bearing ring on the second conveying belt 1012 by the first limiting mechanism 201, the scanning width of the line laser sensor 301 can cover the range of the first limiting mechanism 201 below under the premise of ensuring the resolution; because the inner ring and the outer ring of the tapered roller bearing have a taper, the scanning results of the line laser sensor 301 in the positive and negative directions of the bearing ring are different, and the system takes the bearing ring features recognized by the laser sensor as the basis for judging the subsequent automatic overturning part.

[0043] It can be understood that the first limiting mechanism 201 limits the bearing ring entering the conveying belt in the scanning and recognition area of the line laser sensor 301, and facilitates the positioning and grabbing of the bearing ring by the subsequent two clamps. The first limiting mechanism 201 cooperates with the conveying belt to neatly and linearly arrange the bearing rings with the thick size end surface downward in a single row.

[0044] Optionally, the first limiting mechanism 201 and the second limiting mechanism 202 each comprise two limiting rods parallel to the length direction of the conveying belt, and a guide rod is obliquely arranged on each of the two limiting rods; the guide rod is obliquely arranged to guide the bearing ring 10 on the conveying belt 101 to the middle position.

[0045] Optionally, as shown in Figure 3 The conveying belt 101 can be divided into three parts: a first conveying belt 1011, a second conveying belt 1012 and a third conveying belt 1013. The first conveying belt 1011 is a bearing ring placement entrance; the second conveying belt 1012 is to facilitate the realization of automatic recognition and overturning function; and the third conveying belt 1013 provides a temporary storage position for the bearing ring to be attracted by the bar-shaped electromagnet. In one embodiment, each conveying belt can be controlled to start and stop individually, facilitating the docking and temporary storage of the bearing ring on the line body.

[0046] As shown in Figure 4 and Figure 5As shown in the embodiment, the turnover mechanism 4 includes a horizontal moving mechanism, vertical mechanisms respectively arranged on the horizontal moving mechanism and the support frame 102 of the conveying mechanism 1, rotating mechanisms respectively arranged on the two vertical mechanisms, and clamping jaws respectively arranged on the two rotating mechanisms. It can be understood that at this time, one of the clamping jaws is fixed in the horizontal position, and the clamping and releasing actions are realized through the horizontal movement of the other clamping jaw. In other embodiments, the turnover mechanism 4 includes two horizontally symmetrically arranged horizontal moving mechanisms, vertical mechanisms respectively arranged on the two horizontal moving mechanisms, rotating mechanisms respectively arranged on the two vertical mechanisms, and clamping jaws respectively arranged on the two rotating mechanisms. It can be understood that at this time, both of the clamping jaws can move in the horizontal position, and the clamping and releasing actions are realized through the horizontal movement of the two clamping jaws.

[0047] According to the detection result of the laser sensor, the PLC controls the high-low positions of the first turnover servo motor and the second turnover servo motor through the first cylinder and the second cylinder in advance before the bearing ring arrives.

[0048] Specifically, as shown in Figure 6 and Figure 7 The horizontal moving mechanism is arranged on the base 407 of the support frame 102, the first servo motor 401 is arranged on the base 407, and the screw guide rail pair 402 connected with the first servo motor 401 is arranged on the base 407. The screw in the screw guide rail pair 402 rotates through the bearing 408 and is arranged on the base 407, and the moving block arranged on the screw through the screw sleeve is connected with the vertical mechanism through the nut pair 403.

[0049] Optionally, the vertical mechanism is a cylinder 404, which can be connected with the moving block in the screw guide rail pair 402 through the second fixed block 409 and the second fixed block 411 in combination with the bolt connection mode.

[0050] Optionally, the rotating mechanism includes the second servo motor 405 connected with the vertical mechanism, the shaft coupling 410 connected with the output shaft of the second servo motor 405, and the clamping jaw 406 connected with the shaft coupling 410.

[0051] Specifically, when the first servo motor 401 drives the screw guide rail pair 402 to work, the action of the screw guide rail pair 402 realizes the closing and opening of the two clamping jaws. Through the action of the cylinder 404, the adjustment of the clamping jaw in the vertical direction can be realized. When the second servo motor 405 rotates, the shaft coupling 410 can be driven to rotate, so as to change the angle of the clamping jaw 406.

[0052] Two of the two clamping fingers in one of the two clamping jaws are provided with a longer long finger, and the clamping fingers here are two rectangular plates at an angle, and the long finger refers to the rectangular plate with longer size. When the bearing ring thick size end faces downward, first, the two clamping jaws 406 move to the high position and are in the horizontal state, and the bearing ring directly passes through. When the thick size end face of the bearing ring faces upward, the two clamping jaws 406 are controlled to be in the low position and in the horizontal state, and the long finger is in the blocking position. When the bearing ring is blocked by the long finger of the clamping jaw during conveying, the conveying belt stops conveying, and the two clamping jaws 406 clamp the bearing ring. Then, the two cylinders 404 are synchronously raised to the high position to avoid the conveying belt during subsequent rotation, and the two second servo motors 405 are synchronously rotated in the opposite direction by 180°, and the two cylinders 404 are synchronously lowered to the low position again, and the turning over of the bearing ring is completed. Finally, the two clamping jaws 406 move to the high position again, and the turned over bearing ring can continue to be conveyed forward along the conveying belt.

[0053] As shown in Figure 1 and Figure 10 The output end position of the conveying mechanism 1 is also provided with a stacking mechanism, a feeding frame mechanism 7, a reversing and moving mechanism 8 and an output roller mechanism 9.

[0054] Optionally, the stacking mechanism includes a strip-shaped stacking mechanism 5 and a rectangular stacking mechanism 6; as shown in Figure 8 The strip-shaped stacking mechanism includes a first driving mechanism, a second driving mechanism and a third driving mechanism perpendicular to each other, and a strip-shaped electromagnet is arranged on the third driving mechanism; specifically, the first driving mechanism includes a third servo motor 503 and a fourth servo motor 504 arranged on a gantry 501, and a pulley and other components connected with the third servo motor 503 and the fourth servo motor 504, and a sliding groove matched with the pulley is formed on the gantry 501, when the third servo motor 503 drives the pulley, the entire strip-shaped stacking mechanism 5 moves along the length direction of the gantry 501; the second driving mechanism is connected with the first driving mechanism, and the second driving mechanism includes a fifth servo motor 505 and a screw pair connected with the fifth servo motor 505, and the screw pair drives the third driving mechanism to move left and right; the third driving mechanism includes a sixth servo motor 506 and a screw pair connected with the sixth servo motor 506, and the screw pair connected with the sixth servo motor 506 is connected with a strip-shaped electromagnet 502.

[0055] Specifically, after the bearing rings accumulated in the temporary storage position of the third conveying belt 1013 reach a set number, the strip-shaped electromagnet 502 is used to sequentially divide the single-row bearing rings and stack them in the tray.

[0056] Similarly, as shown in Figure 9As shown, the rectangular code placing mechanism includes a fourth drive mechanism, a fifth drive mechanism and a sixth drive mechanism perpendicular to each other, and a bar-shaped electromagnet is arranged on the sixth drive mechanism; specifically, the fourth drive mechanism includes a seventh servo motor 602 and an eighth servo motor 603 arranged on a portal frame 501, and a pulley and other components connected with the seventh servo motor 602 and the eighth servo motor 603, and a sliding groove matched with the pulley is arranged on the portal frame 501, when the seventh servo motor 602 and the eighth servo motor 603 drive the pulley, the whole rectangular code placing mechanism 6 is driven to move along the length direction of the portal frame 501; the fifth drive mechanism is connected with the fourth drive mechanism, and the fifth drive mechanism includes a ninth servo motor 604, and a screw pair connected with the ninth servo motor 604, and the screw pair drives the sixth drive mechanism to move left and right; the sixth drive mechanism includes a tenth servo motor 605, and a screw pair connected with the tenth servo motor 605, and the screw pair connected with the tenth servo motor 605 is connected with a rectangular electromagnet 601.

[0057] Specifically, when the multiple rows of bearing rings in the material tray reach the set number, the multiple rows of bearing rings in the material tray are sequentially layered and placed in the material frame by the rectangular electromagnet. The bar-shaped code placing mechanism and the rectangular code placing mechanism share the portal frame 501, and the specific position can be calculated by the servo motor encoder, so as to effectively avoid collision during movement of the two mechanisms.

[0058] As shown in the figure, Figure 11 The reversing transfer mechanism 8 includes a rotary cylinder 801, a rotary platform 802 arranged on the rotary cylinder 801, a roller motor 804 arranged on the rotary platform 802, a chain wheel 803 arranged on the roller motor 804, and a roller 805 connected with the chain wheel through a chain.

[0059] Specifically, a material empty frame conveying line body is designed on the side of the device main line, the empty material frame is connected with the main line through the reversing transfer mechanism 8, the reversing transfer mechanism 8 can realize 90° rotation of the material frame through the rotary cylinder 801, after the material frame is layered and placed by the rectangular automatic code placing mechanism, the roller 805 of the reversing transfer mechanism 8 rotates to transport the full material frame to the output roller 805, at the same time, the rotary cylinder 801 restores, and the next empty material frame is prepared to be connected, and the above-mentioned actions are repeated.

[0060] In order to detect the position and count of the bearing rings and the material frame during the conveying process, photoelectric sensors are arranged at appropriate positions of the conveying line body. Absolute value encoders are selected for the servo motors of the bar-shaped code placing mechanism and the rectangular code placing mechanism, so as to position the accurate position during movement.

[0061] As shown in the figure, Figure 12As shown, the control part in the embodiment is that the PLC control system controls the jaw servo driver, the two turnover servo drivers, the four strip automatic stacking servo drivers and the four rectangular automatic stacking servo drivers, the two turnover servo motors, the four strip automatic stacking servo motors and the four rectangular automatic stacking servo motors through the servo bus respectively. The PLC control system controls the three conveyor belt motors and the three roller motors through the three transmission belt frequency converters and the three roller frequency converters respectively. The PLC control system controls the two lifting cylinders and the rotary cylinder through the IO bus mode using the two lifting electromagnetic valves and the rotary electromagnetic valve; the plurality of photoelectric sensors are used to check the positions of the bearing ring and the material frame. The signals of the laser sensor are analyzed by the laser controller and communicated with the PLC control system through the data communication bus.

[0062] Embodiment 2

[0063] The embodiment provides a bearing ring stacking method before heat treatment, which uses the bearing ring stacking device before heat treatment as described in Embodiment 1, and includes that the identification mechanism judges whether the bearing ring needs to be turned over, and when the bearing ring needs to be turned over, the turnover mechanism is used to turn over the bearing ring after the first limiting mechanism.

[0064] The above only describes the preferred embodiments of the present embodiment and is not used to limit the present embodiment. For those skilled in the art, the present embodiment can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present embodiment shall be included in the protection scope of the present embodiment.

Claims

1. A heat treating bearing ring stacking device, characterized by, The conveying mechanism is provided with a first limiting mechanism and a second limiting mechanism; The conveying mechanism is provided with an identification mechanism at the first limiting mechanism and a turnover mechanism between the first limiting mechanism and the second limiting mechanism; when the bearing ring reaches the first limiting mechanism, the identification mechanism determines whether the bearing ring needs to be turned over, and the turnover mechanism turns over the bearing ring after passing through the first limiting mechanism when needed; The identification mechanism comprises a support frame and a line laser sensor arranged on the support frame, and the identification mechanism determines whether the bearing ring needs to be turned over according to the characteristics of the bearing ring identified by the line laser sensor. The turnover mechanism comprises a horizontal moving mechanism, vertical mechanisms arranged on the horizontal moving mechanism and the conveying mechanism respectively, rotating mechanisms arranged on the two vertical mechanisms respectively, and clamping jaws arranged on the two rotating mechanisms respectively; one of the two clamping fingers of one of the clamping jaws is longer, and when the thick size end of the bearing ring faces downward, the two clamping jaws move to a high position and are in a horizontal state, and the bearing ring directly passes through; when the thick size end of the bearing ring faces upward, the two clamping jaws move to a low position and are in a horizontal state, and the long finger is in a blocking position, and the turnover mechanism turns over the bearing ring blocked by the long finger. The output end of the conveying mechanism is provided with a stacking mechanism, which comprises a strip-shaped stacking mechanism and a rectangular stacking mechanism; a third conveying belt provides a temporary storage position for the strip-shaped electromagnet to be attracted; when the bearing rings stacked in the temporary storage position of the third conveying belt reach a certain number, the strip-shaped stacking mechanism is used to stack the single-row bearing rings in the tray one by one; when the multiple rows of bearing rings stacked in the tray reach a certain number, the rectangular stacking mechanism is used to stack the multiple rows of bearing rings in the tray frame one by one.

2. A heat treating bearing ring stacking device as set forth in claim 1 wherein, The conveying mechanism comprises a support frame and a conveying belt arranged on the support frame; the first limiting mechanism, the second limiting mechanism and the turnover mechanism are arranged on the support frame.

3. A heat treating bearing ring stacking device as set forth in claim 2 wherein, The first limiting mechanism and the second limiting mechanism each comprise two limiting rods parallel to the length direction of the conveying belt, and the two limiting rods are respectively provided with inclined guide rods.

4. A heat treating bearing ring stacking device as set forth in claim 1 wherein, The output end of the conveying mechanism is further provided with a feeding frame mechanism, a reversing and moving mechanism and an output roller mechanism.

5. A heat treating bearing ring stacking device as set forth in claim 1 wherein, The strip-shaped stacking mechanism comprises mutually perpendicular first, second and third driving mechanisms, and the third driving mechanism is provided with a strip-shaped electromagnet.

6. A heat treating bearing ring stacking device as set forth in claim 1 wherein, The rectangular stacking mechanism comprises mutually perpendicular fourth, fifth and sixth driving mechanisms, and the sixth driving mechanism is provided with a rectangular electromagnet.

7. A heat treating bearing ring stacking device as set forth in claim 4 wherein, The reversing and moving mechanism comprises a rotating cylinder, a rotating platform arranged on the rotating cylinder, a roller motor arranged on the rotating platform, a chain wheel arranged on the roller motor, and a roller connected to the chain wheel through a chain.

8. A heat treating bearing ring stacking device as set forth in claim 7 wherein, The device main line side is provided with a feeding frame mechanism, the empty frame is connected with the main line through the reversing and moving mechanism, the reversing and moving mechanism realizes 90° rotation of the frame through the rotary cylinder, after the rectangular code placing mechanism completes the layering and stacking of the frame, the roller of the reversing and moving mechanism rotates, the full frame is transported to the output roller mechanism, at the same time, the rotary cylinder restores, and the next empty frame is prepared to be connected, and the above-mentioned actions are repeated.

9. A method of stacking bearing cups prior to heat treatment, characterized in that, The heat treatment bearing ring stacking device according to any one of claims 1-8 is used, and the identification mechanism judges whether the bearing ring needs to be turned over, and when the bearing ring needs to be turned over, the turning over mechanism is used to turn over the bearing ring after the first limiting mechanism.

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