An automatic heat treatment device for spline shaft fork

Abstract

The application provides an automatic heat treatment device for spline shaft forks, and belongs to the technical field of heat treatment machines. The device comprises a heating furnace, one side of the heating furnace is provided with a discharge port, one side of the heating furnace is provided with a mounting frame, the end of the discharge port is provided with a heat preservation curtain, and the device further comprises a stacking assembly installed on one side of the heating furnace, which is used for arranging and placing quenched blanks. The limiting assembly is arranged, the spline shaft fork blank is single clamped, the spline shaft fork cylindrical part is prevented from sliding and stacking from the conveying belt due to its own gravity in the conventional conveying belt transportation, the conveying efficiency of the heating furnace is affected, the parts are prevented from colliding after quenching, the internal stress concentration of the spline shaft fork blank is caused to break, the spline shaft fork blank is damaged, meanwhile, the spline shaft fork blank is prone to uneven heating in the tempering process, and the spline shaft fork blank is not completely tempered.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat treatment machines, in particular to an automatic heat treatment device for spline shaft forks. BACKGROUND

[0002] Heat treatment refers to a metal heat processing process in which materials in a solid state are heated, kept at temperature, and cooled to obtain the desired structure and performance.

[0003] A spline shaft fork is a mechanical transmission component, which has the structural feature of having a longitudinal key groove on the outer surface of the shaft, and the rotating part fitted on the shaft also has a corresponding key groove to keep synchronous rotation with the shaft. The spline shaft fork is widely used in the automotive industry, mainly for key transmission system components such as engines, gearboxes, and drive axles. Since the spline shaft fork is mostly made of carbon steel and is used to transmit mechanical torque, the spline shaft fork needs to be heat treated to improve the hardness, strength, toughness, and wear resistance of the carbon steel, and also to improve its machinability and corrosion resistance.

[0004] The existing spline shaft fork is usually directly heated and quenched, and the spline shaft fork is transported from the quenching pool to the tempering heating furnace by a conveyor belt. Due to the structural features of the conveyor belt, the spline shaft fork may slip or stack on the conveyor belt, resulting in low transportation efficiency and easy damage to the spline shaft fork due to bumping, which may cause deformation and generate unqualified products. In addition, directly using the conveyor belt to transport the spline shaft fork to the heating furnace may cause the spline shaft fork blanks to stack, resulting in uneven heating in some areas and affecting the tempering effect. Therefore, the present application provides an automatic heat treatment device for spline shaft forks to meet the needs. SUMMARY

[0005] The technical problem to be solved by the present application is to provide an automatic heat treatment device for spline shaft forks to solve the problem that the existing spline shaft fork is usually directly heated and quenched, and the spline shaft fork is transported from the quenching pool to the tempering heating furnace by a conveyor belt. Due to the structural features of the conveyor belt, the spline shaft fork may slip or stack on the conveyor belt, resulting in low transportation efficiency and easy damage to the spline shaft fork due to bumping, which may cause deformation and generate unqualified products. In addition, directly using the conveyor belt to transport the spline shaft fork to the heating furnace may cause the spline shaft fork blanks to stack, resulting in uneven heating in some areas and affecting the tempering effect.

[0006] To solve the above technical problems, the present application provides the following technical solutions:

[0007] The utility model provides an automatic heat treatment device for spline axle fork, including heating furnace, one side of heating furnace is provided with discharge gate, one side of heating furnace is provided with mounting frame, the end of discharge gate is provided with heat preservation curtain, still include stack component, stack component installs in one side of heating furnace, and stack component is used for arranging and placing quenching blank, transfer assembly, transfer assembly installs in one side of mounting frame, and transfer assembly is used for transporting blank into heating furnace, limiting component, limiting component installs in the top of transfer assembly, and limiting component is used for limiting single blank, conveying assembly, conveying assembly installs in the inside of heating furnace, and conveying assembly is used for transporting blank from the inside of heating furnace to the outside.

[0008] Optionally, the stack component includes a quenching pool installed on one side of the heating furnace, the inside of the quenching pool is provided with a stacking area, and the inside of the quenching pool is installed with a pushing plate.

[0009] Optionally, the pushing plate slides on the inside of the quenching pool, the inside of the stacking area is installed with an arrangement plate, the inside of the arrangement plate is equidistantly provided with through grooves, the bottom of the arrangement plate is installed with a blocking plate, and the blocking plate slides on the inside of the stacking area.

[0010] Optionally, the transfer assembly includes a driving motor installed on one side of the mounting frame, and the output end of the driving motor is installed with a rotating plate.

[0011] Optionally, one end of the rotating plate is connected with a placing plate, one side of the placing plate is installed with a limiting claw, the top end of the placing plate is equidistantly installed with dampers, the top end of the damper is connected with a placing block, and the top end of the placing block is connected with a shock-absorbing block one.

[0012] Optionally, the limiting component includes mounting rods symmetrically installed on both sides of the shock-absorbing block one, the inside of each mounting rod is equidistantly installed with three rotating shafts, and each rotating shaft rotates on the inside of the mounting rod.

[0013] Optionally, the outside of each rotating shaft is sleeved with a sector blocking block, one side of each sector blocking block is connected with a spring, the surface of each sector blocking block is equidistantly installed with a shock-absorbing block two, and the outside of each rotating shaft is sleeved with a one-way gear.

[0014] Optionally, the three one-way gears are meshed with corresponding racks, the racks are connected with each other, the bottom end of the bottommost rack is connected with an elastic telescopic rod, the top end of the topmost rack is connected with a connecting rod, and the top end of the connecting rod is connected with a contact block.

[0015] Optionally, the conveying assembly comprises a mounting plate installed on one side of the heating furnace, a plurality of groups of transmission plates are installed at the top end of the mounting plate at equal intervals, and the transmission plates are installed through the heating furnace.

[0016] Optionally, a guide plate is connected to the tail end of each group of transmission plates, a trigger block is installed at the top end of each group of transmission plates, a conveying groove is arranged between the two groups of transmission plates, a conveying belt is installed on the inner side of the heating furnace, a plurality of placement seats are installed at equal intervals on the conveying belt, and a blocking protrusion is connected between two placement seats.

[0017] Compared with the prior art, the present application has at least the following beneficial effects:

[0018] In the above scheme, by setting the limiting assembly, the spline shaft fork blank is clamped single, which overcomes the situation that the shaft fork cylindrical parts will slide and stack from the conveying belt due to their own gravity in the conventional conveying belt transportation, avoids affecting the conveying efficiency of the heating furnace, avoids the knocking of the parts after quenching, causes the fracture of the internal stress concentration of the spline shaft fork blank, causes the damage of the spline shaft fork blank, and avoids the situation that the spline shaft fork blank is not completely tempered in the tempering process.

[0019] By setting the conveying assembly, when the arc shape of the blocking protrusion is in contact, the inside of the placement seat on both sides is positioned by sliding, so that the spline shaft fork blank can pass through the heating furnace from the discharge port one by one, and the outer surface of each spline shaft fork blank can be uniformly heated, and at the same time, the spline shaft fork blank is directly stacked on the conveying belt, which causes the discharge port to be blocked and affects the production efficiency.

[0020] By setting the stacking assembly, by setting the communication groove at the bottom of the quenching pool and the stacking area, when the spline shaft fork blank after quenching is pushed out of the quenching pool by the pushing plate, the quenching liquid of the quenching pool can be backflowed through the communication groove, the recycling rate of the quenching liquid is improved, the quenching liquid is avoided to be frequently supplemented, and at the same time, the position interference when the rotating plate drives the placement plate to rotate can be avoided.

[0021] By setting the heat preservation curtain, the inside of the heating furnace is heat preserved by the heat preservation curtain, the metal dust inside the heating furnace is isolated, and at the same time, the carbon impurities generated by surface tempering are wiped when the spline shaft fork blank is transported to the outside of the discharge port, so that dust is avoided when the spline shaft fork blank is discharged from the heating furnace. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present application and, together with the description, further serve to explain the principles of the present application and to enable a skilled artisan to make and use the present application.

[0023] Figure 1 Schematic diagram of the perspective structure of the automatic heat treatment device for the spline shaft fork;

[0024] Figure 2 Schematic diagram of the perspective structure of the automatic heat treatment device for the spline shaft fork from the back;

[0025] Figure 3 Schematic diagram of the perspective structure of the stacking assembly;

[0026] Figure 4 Schematic diagram of the perspective structure of the transfer assembly;

[0027] Figure 5 Schematic diagram of the perspective structure of the Figure 4 Schematic diagram of the perspective structure of the A in the middle;

[0028] Figure 6 Schematic diagram of the perspective structure of the transfer assembly and the limiting assembly assembly;

[0029] Figure 7 Schematic diagram of the perspective structure of the limiting assembly;

[0030] Figure 8 Schematic diagram of the perspective structure of the rotating shaft, the sector stopper and the one-way gear assembly;

[0031] Figure 9 Schematic diagram of the perspective structure of the conveying assembly;

[0032] Figure 10 Schematic diagram of the perspective structure of the Figure 9 Schematic diagram of the perspective structure of the B in the middle;

[0033] Figure 11 Schematic diagram of the perspective structure of the conveying assembly.

[0034] Reference signs:

[0035] 1, heating furnace; 2, discharge port; 3, mounting frame; 4, heat preservation curtain; 5, stacking assembly; 51, quenching pool; 52, stacking area; 53, pushing plate; 54, arrangement plate; 55, passing groove; 56, material blocking plate; 6, transfer assembly; 61, driving motor; 62, rotating plate; 63, placing plate; 64, limiting claw; 650, damper; 65, placing block; 66, shock absorbing block one; 7, limiting assembly; 71, mounting rod; 72, rotating shaft; 73, sector stopper; 74, spring; 75, one-way gear; 76, rack; 77, elastic telescopic rod; 78, connecting rod; 79, contact block; 8, conveying assembly; 81, mounting plate; 82, transmission plate; 83, guide plate; 84, trigger block; 85, conveying groove; 86, conveying belt; 87, placing seat; 88, blocking protrusion.

[0036] As shown in the drawings, in order to clearly show the structure of the embodiments of the present application, specific structures and devices are marked in the drawings, but this is only for the need of illustration, and is not intended to limit the present application to the specific structures, devices and environments, and those skilled in the art can adjust or modify these devices and environments according to specific needs. DETAILED DESCRIPTION

[0037] The automatic heat treatment device for spline shaft fork provided by the present application will be described in detail below in combination with the drawings and specific embodiments. It should be noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and other alternative ways can also be used by those skilled in the art to implement some known technologies; and the drawings are only used to more specifically describe the embodiments, and are not intended to specifically limit the present application.

[0038] It should be noted that the terms "one embodiment", "an embodiment", "exemplary embodiment", "some embodiments", etc. in the specification indicate that the described embodiments can include a specific feature, structure or characteristic, but not necessarily every embodiment includes the specific feature, structure or characteristic. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it should be within the knowledge of those skilled in the related art to implement such a feature, structure or characteristic in combination with other embodiments, whether or not it is explicitly described.

[0039] Generally, the terms can be understood at least in part from the context in which they are used. For example, the term "one or more" as used herein, depending at least in part upon the context in which it is used, can be used to describe any feature, structure, or characteristic in a singular sense or can be used in the conjunctive sense, such as "comprising" or "including". Further, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but instead can allow for existence of other factors not necessarily expressly described, again, depending at least in part on the context in which the term is used.

[0040] It can be understood that the meanings of "on", "above" and "over" in the present application should be interpreted in the broadest way, so that "on" not only means "directly on" something, but also includes the meaning of "on" something with intervening features or layers therebetween, and "above" or "over" not only means the meaning of "above" or "over" something, but also can include the meaning of "above" or "over" something without intervening features or layers therebetween.

[0041] Moreover, spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0042] As shown in Figures 1 to 11 The embodiment of the present application provides an automatic heat treatment device for spline shaft fork, which comprises a heating furnace 1, one side of the heating furnace 1 is provided with a discharge port 2, one side of the heating furnace 1 is provided with a mounting frame 3, the end of the discharge port 2 is provided with a heat preservation curtain 4, and the automatic heat treatment device further comprises a stacking assembly 5, the stacking assembly 5 is installed on one side of the heating furnace 1, the stacking assembly 5 is used for arranging and placing quenched blanks, a transfer assembly 6, the transfer assembly 6 is installed on one side of the mounting frame 3, the transfer assembly 6 is used for transferring the blank into the heating furnace 1, a limiting assembly 7, the limiting assembly 7 is installed on the top end of the transfer assembly 6, the limiting assembly 7 is used for limiting a single blank, and a conveying assembly 8, the conveying assembly 8 is installed on the inner side of the heating furnace 1, and the conveying assembly 8 is used for conveying the blank outward from the inner side of the heating furnace 1.

[0043] As shown in Figures 1 to 3 The stacking assembly 5 comprises a quenching pool 51, the quenching pool 51 is installed on one side of the heating furnace 1, the inner side of the quenching pool 51 is provided with a stacking area 52, the quenching pool 51 and the bottom of the stacking area 52 are provided with a communication groove, the inner side of the quenching pool 51 is provided with a pushing plate 53, the pushing plate 53 slides on the inner side of the quenching pool 51, the inner side of the stacking area 52 is provided with an arrangement plate 54, the inner side of the arrangement plate 54 is provided with through grooves 55 at equal intervals, the bottom of the arrangement plate 54 is provided with a blocking plate 56, and the blocking plate 56 slides on the inner side of the stacking area 52.

[0044] By setting the stacking assembly 5, the operator puts the spline shaft fork blank after quenching and heating into the quenching pool 51 by operating the transfer spreader (not marked in the figure), and the spline shaft fork blank is rapidly cooled by the quenching liquid, so that the internal organizational structure of the spline shaft fork blank changes, forming martensite and other high-hardness martensite precursor phases. Subsequently, during the tempering process, the martensite precursor phase will undergo lattice deformation to form a martensite crystal phase, thereby improving the hardness and strength of the material of the spline shaft fork blank. During tempering, the operator controls the pushing plate 53 to push the cooled spline shaft fork blank in the quenching pool 51 to one side of the stacking area 52, so that the spline shaft fork blank after quenching is stacked above the arrangement plate 54 in the stacking area 52. At this time, the operator can pull out the blocking plate 56 to the outside through the electric control mechanism (not shown in the figure), so that the spline shaft fork blank slides down from the surface of the arrangement plate 54 through the inside of the groove 55 and falls between the two symmetrical mounting rods 71 (in the initial state, the placing plate 63 is located at the bottom end of the blocking plate 56, and the placing block 65 is aligned and installed directly below the groove 55). By setting the communication groove at the bottom of the quenching pool 51 and the stacking area 52, when the pushing plate 53 pushes the quenched spline shaft fork blank to the stacking area 52, the quenching liquid in the quenching pool 51 will flow back through the communication groove, improving the recycling rate of the quenching liquid and avoiding frequent replenishment of the quenching liquid.

[0045] As shown in Figures 4 to 6 The transfer assembly 6 includes a driving motor 61 installed on one side of the mounting frame 3, and the output end of the driving motor 61 is installed with a rotating plate 62. One end of the rotating plate 62 is connected with a placing plate 63, one side of the placing plate 63 is installed with a limiting claw 64, the top end of the placing plate 63 is installed with a damper 650 at equal intervals, the top end of the damper 650 is connected with a placing block 65, the top end of the placing block 65 is connected with a shock absorbing block one 66, and the shock absorbing block one 66 is made of polyurethane material.

[0046] By setting the transfer assembly 6, the operator then starts the driving motor 61, which drives the rotating plate 62 to rotate clockwise, and the rotating plate 62 drives the placing plate 63 to rotate, turning the mounting rods 71 and the fan-shaped blocking blocks 73 at the top end of the placing plate 63 and the spline shaft fork blank after limiting towards the heating furnace 1. The limiting claw 64 is used to clamp the spline shaft fork blank that has not fallen between the mounting rods 71 to avoid falling to the ground, causing the quenched spline shaft fork blank to deform and affecting the mechanical properties of the spline shaft fork blank, thereby reducing the generation of unqualified products.

[0047] As shown in Figures 7 to 8As shown, the limiting assembly 7 comprises mounting rods 71 symmetrically mounted on both sides of the damping block one 66, three rotating shafts 72 are equidistantly arranged on the inner side of each mounting rod 71, each rotating shaft 72 rotates on the inner side of the mounting rod 71, the outer side of each rotating shaft 72 is sleeved with a sector-shaped stopper 73, one side of each sector-shaped stopper 73 is connected with a spring 74, the surface of each sector-shaped stopper 73 is equidistantly arranged with damping block two 730, the outer side of each rotating shaft 72 is sleeved with a one-way gear 75, the three one-way gears 75 are meshed with corresponding gear racks 76, the gear racks 76 are connected with each other, the bottom end of the bottommost gear rack 76 is connected with an elastic telescopic rod 77, the top end of the topmost gear rack 76 is connected with a connecting rod 78, and the top end of the connecting rod 78 is connected with a contact block 79.

[0048] When the spline shaft fork blank falling down through the slot 55 enters between the symmetrically installed mounting rods 71, the spline shaft fork blank falls down by its own gravity and contacts the two side fan-shaped blocks 73, the fan-shaped blocks 73 drive the corresponding rotating shafts 72 to rotate clockwise, the springs 74 are compressed under stress, at the same time, the shock-absorbing blocks two 730 installed equidistantly on the surface of the fan-shaped blocks 73 shock-absorb the spline shaft fork blank in the falling process, the one-way gear 75 rotates outside the rotating shaft 72, the one-way gear 75 meshes with the corresponding rack 76, the rack 76 moves vertically downward, the elastic telescopic rod 77 below the bottommost rack 76 is contracted under stress, the connecting rod 78 drives the contact block 79 to move downward with the value of the rack 76, so that the fan-shaped block 73 is retracted into the inside of the mounting rod 71 by following the rotating shaft 72, the spline shaft fork blank falls down, after the spline shaft fork blank passes, the corresponding height fan-shaped blocks 73 on both sides are no longer pressed downward by the outer surface of the spline shaft fork blank, the elastic telescopic rod 77 is reset, driving the rack 76 to move vertically upward, because the one-way gear 75 has one-way transmission, so that during the upward movement of the rack 76, the one-way gear 75 will not drive the rotating shaft 72 and the fan-shaped block 73 to rotate, at the same time, the spring 74 is no longer pressed at the end, and returns to its original state, so that the fan-shaped block 73 rotates outside the rotating shaft 72 and is reset, blocking the next spline shaft fork blank, at the same time, it can also protect the spline shaft fork blank below the fan-shaped block 73, repeat the above operation, so that the spline shaft fork blank is distributed between the symmetrically installed mounting rods 71, after passing through the bottommost group of fan-shaped blocks 73, the spline shaft fork blank falls into the inside of the placement block 65, the damper 650 at the bottom of the placement block 65 shock-absorbs the falling spline shaft fork blank, the shock-absorbing block one 66 of polyurethane material inside the placement block 65 weakens the vibration, by single clamping the spline shaft fork blank, it avoids the spline shaft fork from sliding and stacking under its own gravity in the conventional conveyor transportation, affects the conveying efficiency of the heating furnace, avoids the knocking of the parts after quenching, causes the fracture of the internal stress concentration of the spline shaft fork blank, causes the damage of the spline shaft fork blank, at the same time, the spline shaft fork blank is easy to cause the incomplete internal tempering of the spline shaft fork blank due to uneven heating in the tempering process.

[0049] As shown in Figures 9 to 11 The conveying assembly 8 includes a mounting plate 81 installed on one side of the heating furnace 1, a plurality of transmission plates 82 are equidistantly distributed and installed at the top end of the mounting plate 81, the transmission plates 82 penetrate through the heating furnace 1, the tail end of each group of transmission plates 82 is connected with a guide plate 83, the top end of each group of transmission plates 82 is installed with a trigger block 84, a conveying slot 85 is arranged between the two groups of transmission plates 82, a conveyor belt 86 is installed inside the heating furnace 1, a plurality of placement seats 87 are equidistantly distributed and installed on the conveyor belt 86, and a blocking protrusion 88 is connected between two placement seats 87.

[0050] By setting the conveying assembly 8, the driving motor 61 drives the mounting rod 71 to rotate towards the mounting plate 81, the contact block 79 at the top end of the mounting rod 71 is in contact with the trigger block 84 at the top end of the corresponding transmission plate 82, the contact block 79 slides towards the inner side of the corresponding mounting rod 71, drives the connecting rod 78 to move towards the bottom end of the mounting rod 71, the rack 76 is in meshing with the one-way gear 75, the one-way gear 75 drives the sector block 73 to rotate through the rotating shaft 72, so that the sector block 73 and the damping block 730 enter the inner side of the mounting rod 71 through rotation, the spline shaft fork blank enters the heating furnace 1 along the inner wall of the mounting rod 71 from the transmission plate 82, the conveying groove 85 between the guide plates 83 slides towards the upper side of the continuously rotating conveying belt 86, the surface of the conveying belt 86 follows the moving placement seat 87, the spline shaft fork blank falls into the inner side of the placement seat 87, the placement seat 87 limits the position of the spline shaft fork blank, the spline shaft fork blank that does not fall into the inner side of the placement seat 87 slides towards the inner side of the placement seat 87 on both sides to be positioned when contacted by the arc-shaped shape of the blocking block 88, so that the spline shaft fork blank can pass through the heating furnace 1 one by one and slide out of the discharge port 2, so that the outer surface of each spline shaft fork blank can be uniformly heated, providing the workpiece tempering effect, at the same time, avoiding the direct use of the conveying belt 86 spline shaft fork blank stacking, causing the discharge port 2 to be blocked, affecting the production efficiency, the spline shaft fork blank completes the tempering treatment of the blank during the sliding process, the heat preservation curtain 4 preserves the inner side of the heating furnace 1, isolates the metal dust in the inner side of the heating furnace 1, and at the same time, wipes off the impurities generated by surface tempering when the spline shaft fork blank is transported to the outer side of the discharge port 2, avoiding dust raising.

[0051] The working principle of the technical scheme provided by the present application is as follows:

[0052] The operator puts the spline shaft fork blank after quenching and heating into the quenching pool 51 by operating the transmission lifting appliance (not marked in the figure), and the quenching liquid rapidly cools the spline shaft fork blank, so that the internal organizational structure of the spline shaft fork blank changes to form a martensite precursor phase with high hardness, and then in the tempering process, the martensite precursor phase will undergo lattice deformation to form a martensite crystal phase, thereby improving the hardness and strength of the material of the spline shaft fork blank. During tempering, the operator controls the pushing plate 53 in the quenching pool 51 to push the cooled spline shaft fork blank to one side of the stacking area 52, so that the spline shaft fork blank after quenching is stacked above the arrangement plate 54 in the stacking area 52. At this time, the operator can pull out the blocking plate 56 outward through the electric control mechanism (not shown in the figure), so that the spline shaft fork blank slides down from the surface of the arrangement plate 54 through the inner side of the groove 55 and falls between the two symmetric mounting rods 71 (in the initial state, the placement plate 63 is located at the bottom end of the blocking plate 56, and the placement block 65 is aligned with the installation below the groove 55).

[0053] When the spline shaft fork blank falling down through the groove 55 enters between the symmetrically installed mounting rods 71, the spline shaft fork blank falling down contacts the fan-shaped blocks 73 on both sides, the fan-shaped blocks 73 drive the corresponding rotating shafts 72 to rotate clockwise, the springs 74 are compressed under stress, at the same time, the shock-absorbing blocks 730 symmetrically installed on the surface of the fan-shaped blocks 73 absorb the shock of the spline shaft fork blank falling down, the one-way gear 75 rotates outside the rotating shaft 72, the one-way gear 75 meshes with the corresponding rack 76, the rack 76 moves vertically downward, the elastic telescopic rod 77 below the bottommost rack 76 is contracted under stress, the connecting rod 78 drives the contact block 79 to move downward with the rack 76, so that the fan-shaped blocks 73 are retracted into the inside of the mounting rod 71 by rotating with the rotating shaft 72, the spline shaft fork blank falls down, after the spline shaft fork blank passes through, the corresponding fan-shaped blocks 73 on both sides are no longer pressed downward by the outer surface of the spline shaft fork blank, the elastic telescopic rod 77 is reset to drive the rack 76 to move vertically upward, because the one-way gear 75 has one-way transmission, the one-way gear 75 does not drive the rotating shaft 72 and the fan-shaped blocks 73 to rotate during the upward movement of the rack 76, at the same time, the spring 74 is no longer pressed at the end to restore its original state, so that the fan-shaped blocks 73 rotate outside the rotating shaft 72 to reset and block the next spline shaft fork blank, at the same time, it can also protect the spline shaft fork blank below the fan-shaped blocks 73, repeat the above operation to make the spline shaft fork blanks spread between the symmetrically installed mounting rods 71, after passing through the bottommost group of fan-shaped blocks 73, the spline shaft fork blank falls into the inside of the placement block 65, the damper 650 at the bottom of the placement block 65 absorbs the shock of the falling spline shaft fork blank, and the shock-absorbing block one 66 inside the placement block 65 weakens the vibration.

[0054] Then the operator starts the driving motor 61, the driving motor 61 drives the rotating plate 62 to rotate clockwise, the rotating plate 62 drives the placement plate 63 to rotate, the mounting rod 71 and the fan-shaped blocks 73 at the top of the placement plate 63 and the spline shaft fork blank after limiting are rotated toward the heating furnace 1, the limiting claw 64 is used to clamp the spline shaft fork blank that has not fallen between the mounting rods 71 to avoid falling to the ground, causing the quenched spline shaft fork blank to deform and affecting the mechanical properties of the spline shaft fork blank, reducing the generation of unqualified products.

[0055] The driving motor 61 drives the mounting rod 71 to rotate towards the mounting plate 81, the contact block 79 at the top of the mounting rod 71 is in contact with the trigger block 84 at the top of the corresponding transmission plate 82, the contact block 79 slides to the inner side of the corresponding mounting rod 71, drives the connecting rod 78 to move to the bottom of the mounting rod 71, the rack 76 is in mesh with the one-way gear 75, the one-way gear 75 drives the sector block 73 to rotate through the rotating shaft 72, so that the sector block 73 and the damping block 730 enter the inner side of the mounting rod 71 through rotation, the spline shaft fork blank enters the heating furnace 1 along the inner wall of the mounting rod 71 from the transmission plate 82, the conveying groove 85 between the guide plates 83 slides to the upper side of the continuously rotating conveying belt 86, the surface of the conveying belt 86 follows the moving placement seat 87, the spline shaft fork blank falls into the inner side of the placement seat 87, the placement seat 87 limits the position of the spline shaft fork blank, the spline shaft fork blank that does not fall into the inner side of the placement seat 87 slides to the inner side of the placement seat 87 on both sides to be positioned when contacted by the arc-shaped shape of the blocking block 88, so that the spline shaft fork blank can pass through the heating furnace 1 from the discharge port 2 one by one, the spline shaft fork blank completes the tempering treatment of the blank during the sliding process, the heat preservation curtain 4 preserves the inner side of the heating furnace 1, isolates the metal dust in the inner side of the heating furnace 1, and at the same time, isolates the impurities precipitated on the surface during the tempering of the spline shaft fork blank when transporting to the outer side of the discharge port 2, to avoid dust.

[0056] The present application encompasses any substitutions, modifications, equivalent methods and solutions made on the essence and scope of the present application. In order to make the public have a thorough understanding of the present application, specific details are described in the following preferred embodiments of the present application, and the present application can also be fully understood without the description of these details to those skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the present application, well-known methods, processes, procedures, elements and circuits are not described in detail.

[0057] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be regarded as the protection scope of the present application.

Claims

1. An automatic heat treatment device for a spline shaft yoke, characterized by, Including heating furnace, one side of the heating furnace is provided with a discharge port, one side of the heating furnace is provided with a mounting frame, the end of the discharge port is provided with a heat preservation curtain; It also includes a stacking assembly, which is installed on one side of the heating furnace, and is used for arranging and placing the quenched blanks; The transfer assembly is installed on one side of the mounting frame, and is used for transferring the blanks into the heating furnace; The limiting assembly is installed at the top end of the transfer assembly, and is used for limiting a single blank; The conveying assembly is installed on the inner side of the heating furnace, and is used for transporting the blanks from the inner side of the heating furnace outward; The limiting assembly includes mounting rods symmetrically installed on both sides of the shock-absorbing block one, three rotating shafts are equidistantly distributed on the inner side of each mounting rod, and each rotating shaft rotates on the inner side of the mounting rod; The outer side of each rotating shaft is sleeved with a sector-shaped stopper, one side of each sector-shaped stopper is connected with a spring, and a shock-absorbing block two is equidistantly installed on the surface of each sector-shaped stopper; The outer side of each rotating shaft is sleeved with a one-way gear; 2. The apparatus for automatically heat treating a spline axle fork according to claim 1, wherein Three one-way gears are meshed with corresponding racks, the racks are connected with each other, the bottom end of the bottommost rack is connected with an elastic telescopic rod, the top end of the topmost rack is connected with a connecting rod, and the top end of the connecting rod is connected with a contact block.

3. The apparatus for automatically heat treating a spline axle fork according to claim 2, wherein The stacking assembly includes a quenching pool installed on one side of the heating furnace, a stacking area is arranged on the inner side of the quenching pool, and a pushing plate is installed on the inner side of the quenching pool.

4. The apparatus for automatically heat treating a spline yoke according to claim 3, wherein The pushing plate slides on the inner side of the quenching pool, the inner side of the stacking area is provided with an arrangement plate, the inner side of the arrangement plate is equidistantly provided with a through groove, and the bottom of the arrangement plate is provided with a blocking plate which slides on the inner side of the stacking area.

5. The apparatus for automatically heat treating a spline yoke according to claim 4, wherein The transfer assembly includes a driving motor installed on one side of the mounting frame, and an output end of the driving motor is provided with a rotating plate.

6. The apparatus for automatically heat treating a spline yoke according to claim 5, wherein One end of the rotating plate is connected with a placing plate, one side of the placing plate is provided with a limiting claw, the top end of the placing plate is equidistantly provided with a damper, the top end of the damper is connected with a placing block, and the top end of the placing block is connected with a shock-absorbing block one.

7. The apparatus for automatically heat treating a spline yoke according to claim 6, wherein The conveying assembly includes a mounting plate installed on one side of the heating furnace, a plurality of groups of transmission plates are equidistantly installed on the top end of the mounting plate, and the transmission plates penetrate through the heating furnace. The tail end of each group of transmission plates is connected with a guide plate, the top end of each group of transmission plates is provided with a trigger block, a conveying groove is arranged between two groups of transmission plates, a conveying belt is installed on the inner side of the heating furnace, a plurality of placing seats are equidistantly installed on the conveying belt, and a blocking protrusion is connected between two placing seats.

Images