Synchronous feeding and discharging mechanism for cam pieces

Abstract

The utility model discloses a cam piece synchronous feeding and discharging mechanism which comprises a machining rotary table, a feeding mechanism and a discharging mechanism. The feeding device comprises a feeding table and a transfer robot, a plurality of placement stations are arranged on the feeding table, and the transfer robot is suitable for grabbing the cam pieces on at least one placement station and conveying the cam pieces to the machining station; the discharging device comprises a discharging table and a transfer robot, and the transfer robot is suitable for grabbing the cam pieces on the machining station and placing the cam pieces on the discharging table for discharging; the transfer robot comprises a transfer clamp, the transfer clamp is provided with a penetrating channel and a chuck, the caliber of the penetrating channel is not smaller than the diameter of the placing rod, the placing rod is suitable for passing through the penetrating channel in the axial direction, and the chuck is located on the peripheral side of the penetrating channel. The automatic feeding and discharging device has the advantages that feeding and discharging are conducted synchronously, and feeding is efficient and stable.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of heat treatment, in particular to a synchronous feeding and discharging mechanism for cam pieces. BACKGROUND

[0002] Quenching is a kind of heat treatment process, and quenching of steel refers to a heat treatment process that heats steel to a temperature above a critical temperature Ac3 (hypoeutectoid steel) or Ac1 (hypereutectoid steel), keeps the temperature for a period of time, makes all or part of austenite, and then rapidly cools to below Ms (or near Ms isothermal) at a cooling speed greater than the critical cooling speed to perform martensite (or bainite) transformation. The solid solution treatment or heat treatment process with a rapid cooling process of aluminum alloy, copper alloy, titanium alloy, tempered glass and the like are also called quenching.

[0003] With the continuous development of the automobile manufacturing industry in China, the manufacturing process requirements of some shaft tooth parts affecting the performance of the whole machine are getting higher and higher, especially for some precise shaft tooth parts with high wear resistance, such as cam pieces on camshafts of automobile engines, and the quality of the hardened layer of the quenching has a more important influence on the mechanical properties and service life of the engine.

[0004] However, the existing heat treatment process has the following defects: in the current processing process, the feeding and discharging operation of the product is relatively inconvenient, it is difficult to efficiently and stably feed and discharge one or even multiple products synchronously, and the product is not treated during the feeding and discharging process, which is relatively time-consuming. SUMMARY

[0005] An object of the application is to provide a synchronous feeding and discharging mechanism for cam pieces, which is efficient and stable in feeding and can blow away liquid during discharging.

[0006] To achieve the above object, the technical scheme adopted by the application is as follows: a synchronous feeding and discharging mechanism for cam pieces, comprising:

[0007] A machining turntable is provided with a plurality of machining stations in the circumferential direction, and the machining turntable is adapted to rotate so that the machining stations pass through a feeding device, a quenching device, a cooling device and a discharging device in turn;

[0008] The feeding device comprises a feeding table and a transfer robot, the feeding table is provided with a plurality of placement stations, the placement stations are adapted to stack and place cam pieces, and the transfer robot is adapted to grab cam pieces on at least one placement station and convey the cam pieces to the machining stations;

[0009] The discharging device comprises a discharging table and a transfer robot, the transfer robot is adapted to grab cam pieces on the machining stations and place the cam pieces on the discharging table for discharging;

[0010] The placing station is provided with a placing rod, the cam pieces are suitable for axial stacking along the placing rod, the transfer robot comprises a transfer clamp, the transfer clamp is provided with a through channel and a chuck, the caliber of the through channel is not less than the diameter of the placing rod, the placing rod is suitable for passing through the through channel in the axial direction, the chuck is located on the circumferential side of the through channel, and the chuck is suitable for moving close to or away from each other in the radial direction of the through channel.

[0011] In some embodiments, the processing station is provided with a processing shaft seat, the cam pieces are suitable for being sleeved on the processing shaft seat in the axial direction, the transfer clamp is provided with a movable ventilation sleeve, the through channel is arranged in the ventilation sleeve, the diameter of the processing shaft seat is greater than the caliber of the through channel, the diameter of the processing shaft seat is smaller than the outer diameter of the ventilation sleeve, the diameter of the processing shaft seat is not greater than the inner diameter of the cam piece, and the outer circumferential side of the ventilation sleeve is provided with a first airflow channel, the ventilation sleeve is suitable for being abutted to the cam piece and moving relative to the transfer clamp to open the first airflow channel when the transfer robot discharges and clamps the cam piece.

[0012] In some embodiments, the transfer clamp is provided with a connecting sleeve, the ventilation sleeve is nested in the connecting sleeve, the connecting sleeve is provided with a second airflow channel, the first airflow channel is suitable for being connected to the second airflow channel when the ventilation sleeve is abutted to the cam piece, and the inner diameter of the first airflow channel is smaller than the inner diameter of the cam piece.

[0013] In some embodiments, the connecting sleeve is provided with a third airflow channel near one end of the chuck, the first airflow channel is suitable for connecting the second airflow channel and the third airflow channel when the ventilation sleeve is abutted to the cam piece, and the outer diameter of the third airflow channel is greater than the inner diameter of the cam piece.

[0014] In some embodiments, the ventilation sleeve protrudes from the connecting sleeve, so that a gap is formed between the third airflow channel and the cam piece.

[0015] In some embodiments, the transfer robot comprises a mechanical hand, the mechanical hand and the transfer clamp are movably connected, the chuck and the mechanical hand are respectively arranged on two sides of the transfer clamp, the transfer clamp is provided with a lightening hole between the through channel and the mechanical hand, the chuck is suitable for arranging a driving line near one side of the lightening hole, and the driving line is suitable for passing through the lightening hole and being guided to the mechanical hand.

[0016] In some embodiments, the feeding device comprises a first driving device, the placing stations are uniformly arranged along the circumference of the feeding table, the first driving device is adapted to rotate the placing stations along the circumference of the feeding table, the processing turntable is provided with a second driving device, the quenching devices are uniformly arranged along the circumference of the processing turntable, the number of the placing stations is X times of the number of the quenching devices, and the distance between the processing centers of adjacent quenching devices is equal to the distance between the placing centers of the placing stations spaced by X-1.

[0017] In some embodiments, the processing station is provided with a processing shaft seat, the processing shaft seat is connected with the second driving device, and the second driving device is adapted to rotate the processing shaft seat along the shaft center.

[0018] In some embodiments, the processing shaft seat is provided with at least one ejection portion in the radial direction, the ejection portion is adapted to move along the radial direction of the processing shaft seat and extend or retract from the circumferential side of the processing shaft seat, and the ejection portion is adapted to abut against the cam piece to limit the cam piece from being separated from the processing shaft seat.

[0019] Compared with the prior art, the cam piece synchronous feeding and discharging mechanism has the advantages that the arrangement of the stations between the processing turntable and the feeding table is optimized, the production efficiency is improved, the capacity of the feeding table is greatly increased, the space is saved, the structure of the transfer clamp is optimized, the transfer clamp can accurately and stably clamp the materials on the feeding table, and the transfer clamp can also pre-blow the surface liquid of the product during the discharging process, thereby improving the speed of subsequent processing of the product and realizing more efficient processing. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a whole schematic view according to a preferred embodiment of the present application.

[0021] Figure 2 is a structural schematic view of a feeding table according to a preferred embodiment of the present application.

[0022] Figure 3 is a structural relationship schematic view of a processing turntable and a feeding table according to a preferred embodiment of the present application.

[0023] Figure 4 is a whole structural view of a transfer robot according to a preferred embodiment of the present application.

[0024] Figure 5 is a feeding clamping state schematic view according to a preferred embodiment of the present application.

[0025] Figure 6 is a discharging clamping state schematic view according to a preferred embodiment of the present application.

[0026] Figure 7 is a structure view of a machining axle seat according to a preferred embodiment of the present application Figure 6 is an enlarged view of a portion of the machining axle seat.

[0027] Figure 8 is a structure view of a machining axle seat according to a preferred embodiment of the present application

[0028] In the figure: 1, machining rotary table; 11, machining station; 111, machining axle seat; 1111, ejection part; 12, drainage port; 2, feeding device; 21, feeding table; 211, placing station; 2111, placing rod; 22, first driving device; 3, discharging device; 31, discharging table; 4, transfer robot; 41, transfer clamp; 411, air sleeve; 4111, through channel; 4112, first air flow channel; 412, chuck; 413, connecting sleeve; 4131, second air flow channel; 4132, third air flow channel; 414, weight-reducing hole; 42, mechanical hand; 5, quenching device; 6, cooling device; 7, cam piece. DETAILED DESCRIPTION

[0029] Hereinafter, the present application will be further described in conjunction with specific embodiments, it should be noted that, without conflict, the following described embodiments or technical features can be combined to form new embodiments.

[0030] In the description of the present application, it should be noted that, for orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0031] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0032] The terms "include" and "have" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0033] The following description, in conjunction with the accompanying drawings, further illustrates this application:

[0034] like Figures 1 to 8 As shown, this application provides a cam plate synchronous loading and unloading mechanism, including...

[0035] A machining turntable 1 is provided with multiple machining stations 11 arranged circumferentially. The machining turntable 1 is adapted to rotate so that the machining stations 11 pass sequentially through the feeding device 2, the quenching device 5, the cooling device 6, and the unloading device 3. The feeding device 2, the quenching device 5, the cooling device 6, and the unloading device 3 are arranged around the machining turntable 1, which can improve the overall structural compactness and reduce space occupation. By using the machining turntable 1 to control the movement of the machining stations 11, the cam plate 7 can gradually complete the entire production process. It can be understood that the more machining stations 11 there are, the shorter the idle time of each device and the faster the production cycle. Therefore, the reasonable setting of the number of machining stations 11 can make each device operate fully and improve production efficiency.

[0036] The feeding device 2 includes a feeding platform 21 and a transfer robot 4. The feeding platform 21 is provided with multiple placement stations 211, which are suitable for stacking and placing cam pieces 7. The transfer robot 4 is suitable for grabbing at least one cam piece 7 on the placement station 211 and transporting it to the processing station 11. It can be understood that the more cam pieces 7 the transfer robot 4 grabs, the shorter the feeding time per cam piece 7 will be, thereby improving the feeding efficiency.

[0037] The unloading device 3 includes an unloading table 31 and a transfer robot 4. The transfer robot 4 is adapted to grab at least one cam piece 7 on the processing station 11 and place it on the unloading table 31 for unloading. It can be understood that the more cam pieces 7 the transfer robot 4 grabs, the shorter the unloading time per cam piece 7, thereby improving the unloading efficiency.

[0038] The quenching device 5 is movably mounted above the machining turntable 1. The quenching device 5 includes a quencher 51 and a cooler 52. The quencher 51 is adapted to move to the machining station 11 to heat the cam plate 7 on the machining station 11. The quencher 51 is also adapted to move to the machining station 11 to cool the cam plate 7 on the machining station 11. By integrating the quenching and cooling functions into the same device, the structural compactness can be improved, the space occupation can be reduced, the need for simultaneous quenching at multiple stations can be met, and the quenching interval can be effectively reduced, thereby improving the quenching efficiency.

[0039] The cooling device 6 is suitable for spraying liquid cooling on the cam piece 7 on the machining station 11, and the cooling device 6 comprises a spray head 61 provided with a plurality of water outlets. The machining turntable 1 can rotate the machining station 11 to the front of the spray head 61 to cool the cam piece 7 on the machining station 11 and restore the cam piece 7 to room temperature.

[0040] The machining turntable 1 is provided with a drainage port 12 around the machining turntable 1. A circulating device is connected to the drainage port 12, the cooler 52 and the cooling device 6. A purifier is arranged in the circulating device and is suitable for purifying and filtering the liquid flowing out of the drainage port 12. Through the recycling of waste water, environmental pollution and resource waste can be reduced, and long-term production costs can be reduced.

[0041] As shown in the embodiments of Figure 2 and 3 , the feeding device 2 comprises a first driving device 22, and the placement stations 211 are uniformly arranged along the circumference of the feeding table 21. The first driving device 22 is suitable for rotating the placement stations 211 along the circumference of the feeding table 21. The machining turntable 1 is provided with a second driving device, and the machining stations 11 are uniformly arranged along the circumference of the machining turntable 1. The number of the placement stations 211 is X times the number of the machining stations 11. The distance Z2 between the machining centers of adjacent machining stations 11 is equal to the distance Z2 between the placement centers of the placement stations 211 spaced by X-1. The transfer robot 4 can stably pick up the placement stations 211 spaced by X-1 and place them on the adjacent machining stations 11. X is an integer. The advantage of this design is that the volume of the cam piece 7 is small, and the volume of the quenching device 5 is large. If the number of the placement stations 211 is the same as the number of the machining stations 11, the distance between the placement stations 211 will be much larger than the volume of the cam piece 7, causing waste of space. By increasing the number of the placement stations 211 and reasonably designing the spacing between the placement stations 211, the total capacity of the feeding table 21 can be improved, and the upper limit of the volume of single batch processing can be improved.

[0042] In some embodiments, the machining turntable 1 and the feeding table 21 are suitable for being provided with travel switches to identify and control the rotation travel of the two.

[0043] As shown in the embodiments of Figure 2 , 4In the embodiment shown in Figure 5, a placement rod 2111 is provided on the placement station 211, and the cam plates 7 are adapted to be stacked along the axial direction of the placement rod 2111. The transfer robot 4 includes a transfer fixture 41, which is provided with a through channel 4111 and a chuck 412. The diameter of the through channel 4111 is not less than the diameter of the placement rod 2111. The placement rod 2111 is adapted to pass through the through channel 4111 along the axial direction. The chuck 412 is located on the periphery of the through channel 4111 and is adapted to move closer to or further away from each other along the radial direction of the through channel 4111. The placement rod 2111 can guide and position the transfer fixture 41 during the clamping process. After docking with the placement rod 2111, the transfer fixture 41 moves along the placement rod 2111 and clamps the cam plates 7 stacked on the placement rod 2111, which can greatly improve the clamping success rate and stability of the transfer fixture 41.

[0044] like Figure 1 , 5 In the embodiments shown in 6 and 7, a machining bearing 111 is provided on the machining station 11. The transfer robot 4 is adapted to axially mount the cam plate 7 onto the machining bearing 111. A movable venting sleeve 411 is provided on the transfer fixture 41. A through channel 4111 is provided inside the venting sleeve 411. The diameter of the machining bearing 111 is larger than the diameter of the through channel 4111, the diameter of the machining bearing 111 is smaller than the outer diameter of the venting sleeve 411, and the diameter of the machining bearing 111 is not larger than the inner diameter of the cam plate 7. A first airflow channel 4112 is provided on the outer periphery of the sleeve 411. When the transfer robot 4 discharges and clamps the cam plate 7, the air supply sleeve 411 is adapted to abut against the cam plate 7 and move relative to the transfer clamp 41 to open the first airflow channel 4112. The first airflow channel 4112 can spray airflow onto the surface of the cam plate 7. The first airflow channel 4112 is passively opened during material discharge, which can quickly remove the liquid from the surface of the cam plate 7, thereby reducing the time required for subsequent processing steps of the cam plate 7 and improving production efficiency.

[0045] Understandably, by setting the size relationship between the diameter of the placement rod 2111, the diameter of the machining shaft seat 111, and the diameter of the through channel 4111 of the vent sleeve 411, the vent sleeve 411 can smoothly pass through the placement rod 2111 for loading and clamping, and can also abut against the machining shaft seat 111 to open the first airflow channel 4112. This removes liquid from the surface of the cam plate 7 during the unloading stage without affecting the loading and unloading operations, reducing the time required for subsequent processing steps of the cam plate 7 and improving production efficiency. Since the transfer robot 4 itself requires a certain amount of operation time when performing the unloading operation, the first airflow channel 4112 can make full use of this operation time to remove liquid without occupying additional production time, and can also improve the production time of subsequent processing, which has high practicality.

[0046] As Figure 6 and 7 shown, specifically, the transfer clamp 41 is provided with a connecting sleeve 413, the ventilation sleeve 411 is nested in the connecting sleeve 413, the connecting sleeve 413 is provided with a second airflow passage 4131, the second airflow passage 4131 is in communication with external ventilation equipment, when the ventilation sleeve 411 abuts against the cam piece 7, the ventilation sleeve 411 stops moving, at this time the transfer clamp 41 continues to descend, then the connecting sleeve 413 can move relative to the ventilation sleeve 411, so that the first airflow passage 4112 is connected with the second airflow passage 4131.

[0047] In some embodiments, the transfer clamp 41 can be provided with an elastic reset member to move the ventilation sleeve 411, help the first airflow passage 4112 to be closed, the first airflow passage 4112 can also be closed by using the gravity of the ventilation sleeve 411 itself.

[0048] In some embodiments, the inner diameter of the first airflow passage 4112 is smaller than the inner diameter of the cam piece 7, so that the first airflow passage 4112 can at least blow the liquid in the inner hole of the cam piece 7, improve the efficiency of the subsequent processing process.

[0049] As Figure 7 shown in the embodiment, the connecting sleeve 413 is provided with a third airflow passage 4132 near one end of the chuck 412, when the ventilation sleeve 411 abuts against the cam piece 7, the first airflow passage 4112 is adapted to connect the second airflow passage 4131 and the third airflow passage 4132, the outer diameter of the third airflow passage 4132 is larger than the inner diameter of the cam piece 7, the third airflow passage 4132 can blow the liquid on the upper surface of the cam piece 7, improve the efficiency of the subsequent processing process.

[0050] In order to ensure the smoothness of the third airflow passage 4132, the ventilation sleeve 411 protrudes from the connecting sleeve 413 before and after the movement process, so that the third airflow passage 4132 and the cam piece 7 are adapted to form a gap.

[0051] As Figures 4 to 6In the shown embodiment, the transfer robot 4 comprises a mechanical arm 42, which is movably connected with the transfer clamp 41. In the present application, the mechanical arm 42 and the transfer clamp 41 are rotatably connected, the chuck 412 and the mechanical arm 42 are arranged on two sides of the transfer clamp 41 respectively, the transfer clamp 41 is provided with a lightening hole 414 between the through channel 4111 and the mechanical arm 42, the chuck 412 is suitable for arranging a driving line on the side close to the lightening hole 414, the driving line is suitable for passing through the lightening hole 414 and leading to the mechanical arm 42, the lightening hole 414 can not only reduce the weight of the transfer clamp 41, but also play a role in wire guiding, so that the wire avoids the through channel 4111 and the placement rod 2111 in the feeding process, reduces the structural interference, and improves the feeding smoothness.

[0052] In some embodiments, the mechanical arm 42 can control the transfer clamp 41 to move in the horizontal plane and lift along the vertical direction.

[0053] As shown in the embodiments of Figure 5 and 6 , the second airflow channel 4131 is in communication with the external ventilation equipment on the side of the transfer clamp 41 away from the lightening hole 414, which facilitates separate maintenance and arrangement of the driving line of the chuck 412 and the ventilation line of the second airflow channel 4131, and reduces the maintenance difficulty.

[0054] In some embodiments, the second airflow channel 4131 is in communication with the external ventilation equipment in the lightening hole 414, which can combine and arrange the driving line of the chuck 412 and the ventilation line of the second airflow channel 4131, so that the overall structure is more compact.

[0055] In some embodiments, the machining shaft seat 111 is connected with the second driving device, and the second driving device is suitable for making the machining shaft seat 111 rotate along the axis. The second driving device can be connected with the machining turntable 1 and the machining shaft seat 111 through the variable speed transmission structure in the prior art, so that the machining turntable 1 and the machining shaft seat 111 can be driven to rotate at different speeds, a driving source is shared, the overall structural compactness is improved, and the cost is reduced. In the present application, the self-rotation speed of the machining shaft seat 111 is set to 300 revolutions per minute, so that the cam piece 7 can obtain better quenching effect and is not easy to be thrown out of the machining shaft seat 111.

[0056] As shown in the embodiments of Figure 8 , the machining shaft seat 111 is provided with at least one ejection portion 1111 along the radial direction, the ejection portion 1111 is suitable for moving along the radial direction of the machining shaft seat 111 and extending or retracting from the circumferential side of the machining shaft seat 111, the ejection portion 1111 is suitable for extending and abutting to the inner circumferential side of the cam piece 7, so as to limit the cam piece 7 from separating from the machining shaft seat 111 and make the cam piece 7 rotate with the machining shaft seat 111, thereby improving the quenching effect.

[0057] In some embodiments, the number of the pop-up portions 1111 is multiple, and the pop-up portions 1111 are uniformly arranged along the circumference of the machining shaft seat 111. The pop-up portions 1111 can help the cam piece 7 to be effectively fixed on the machining shaft seat 111.

[0058] In some embodiments, the pop-up of the pop-up portions 1111 is realized by setting an elastic reset member in the machining shaft seat 111. A chamfer and a round corner structure can be arranged at the outer end of the pop-up portions 1111, so that the pop-up portions 1111 can be pressed back and abut to the inner circumferential side of the cam piece 7 when the cam piece 7 is fed.

[0059] In some embodiments, the pop-up of the pop-up portions 1111 is realized by the centrifugal force generated by the rotation of the machining shaft seat 111. A chamfer and a round corner structure can be arranged at the outer end of the pop-up portions 1111, so that the pop-up portions 1111 can be pressed back and abut to the inner circumferential side of the cam piece 7 when the cam piece 7 is fed.

[0060] The above describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments. The above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application. These changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A cam piece synchronous feeding and discharging mechanism, characterized in that, The application relates to a cam machining device. The machining device comprises a machining turntable, a feeding device, a quenching device, a cooling device and a discharging device. The machining turntable is provided with a plurality of machining stations in a circumferential direction, and is adapted to rotate so that the machining stations pass through the feeding device, the quenching device, the cooling device and the discharging device in sequence. The feeding device comprises a feeding table and a transfer robot. The feeding table is provided with a plurality of placing stations, and the placing stations are adapted to stack cam pieces. The transfer robot is adapted to grab a cam piece on at least one placing station and transport the cam piece to the machining station.

2. The cam plate synchronous feeding and discharging mechanism according to claim 1, characterized in that: The discharging device comprises a discharging table and a transfer robot.

3. The cam plate synchronous feeding and discharging mechanism according to claim 2, characterized in that: The transfer robot is adapted to grab a cam piece on the machining station and place the cam piece on the discharging table for discharging.

4. The cam plate synchronous feeding and discharging mechanism according to claim 3, characterized in that: The placing station is provided with a placing rod, and the cam pieces are adapted to be stacked along the axial direction of the placing rod.

5. The cam plate synchronous feeding and discharging mechanism according to claim 1, characterized in that: The transfer robot comprises a transfer clamp. The transfer clamp is provided with a through channel and a chuck. The diameter of the through channel is not less than the diameter of the placing rod. The placing rod is adapted to pass through the through channel in the axial direction. The chuck is located on the circumferential side of the through channel. The chuck is adapted to move towards or away from each other in the radial direction of the through channel. The machining station is provided with a machining shaft seat. The cam piece is adapted to be sleeved on the machining shaft seat in the axial direction. The through channel is arranged in the through ventilation sleeve. The diameter of the machining shaft seat is greater than the diameter of the through channel. The diameter of the machining shaft seat is less than the outer diameter of the through ventilation sleeve. The diameter of the machining shaft seat is not greater than the inner diameter of the cam piece. The outer circumferential side of the through ventilation sleeve is provided with a first airflow channel. When the transfer robot discharges and clamps the cam piece, the through ventilation sleeve is adapted to abut against the cam piece and move relative to the transfer clamp to open the first airflow channel. The transfer clamp is provided with a connecting sleeve. The through ventilation sleeve is nested in the connecting sleeve. The connecting sleeve is provided with a second airflow channel. When the through ventilation sleeve abuts against the cam piece, the first airflow channel is adapted to be connected with the second airflow channel. The inner diameter of the first airflow channel is less than the inner diameter of the cam piece. The connecting sleeve is provided with a third airflow channel near the chuck. When the through ventilation sleeve abuts against the cam piece, the first airflow channel is adapted to be connected with the second airflow channel and the third airflow channel. The outer diameter of the third airflow channel is greater than the inner diameter of the cam piece. The through ventilation sleeve protrudes from the connecting sleeve, so that a gap is formed between the third airflow channel and the cam piece. The transfer robot comprises a mechanical hand. The mechanical hand and the transfer clamp are movably connected. The chuck and the mechanical hand are arranged on the two sides of the transfer clamp. The transfer clamp is provided with a weight-reducing hole between the through channel and the mechanical hand. The chuck is adapted to arrange a driving circuit near the weight-reducing hole. The driving circuit is adapted to pass through the weight-reducing hole and lead to the mechanical hand.

6. The cam plate synchronous feeding and discharging mechanism according to claim 1, characterized in that: The feeding device comprises a first driving device, the placing stations are uniformly arranged along the circumference of the feeding table, the first driving device is adapted to rotate the placing stations along the circumference of the feeding table, the processing turntable is provided with a second driving device, the quenching devices are uniformly arranged along the circumference of the processing turntable, the number of the placing stations is X times of the number of the quenching devices, and the distance between the processing centers of adjacent quenching devices is equal to the distance between the placing centers of the placing stations spaced by X-1.

7. The cam plate synchronous feeding and discharging mechanism according to claim 6, characterized in that: A processing shaft seat is arranged on the processing station, the processing shaft seat is connected with the second driving device, and the second driving device is adapted to make the processing shaft seat rotate along the axis.

8. The cam plate synchronous feeding and discharging mechanism according to claim 7, characterized in that: At least one ejection part is arranged on the processing shaft seat in the radial direction, the ejection part is adapted to move along the radial direction of the processing shaft seat and extend or retract from the circumferential side of the processing shaft seat, and the ejection part is adapted to abut against the cam piece to limit the cam piece from being separated from the processing shaft seat.

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