A heat treatment apparatus for a gear

Abstract

This invention discloses a heat treatment device for gears, relating to the field of gear heat treatment technology. To ensure uniform heating of the gears, the device includes a base, a rotating lifting section, and a heat treatment section. The rotating lifting section includes: a drive column movably connected to the outer wall of the top of the base, with a drive gear fixed to its outer circumference via a pin; and a mounting plate fixed to the outer wall of the top of the base, with a hydraulic cylinder fixed to one side of its outer wall. This invention, by incorporating a roller pressing assembly, allows the gear workpiece to move to the heat treatment section for heat treatment when rolling the inclined portion of a V-shaped plate. When the roller pressing assembly moves to the flat portion of the V-shaped plate, an electromagnet can adsorb the gear onto the bottom surface of the adsorption plate, and a transmission section can drive the gear workpiece to rotate. This ensures uniform heating of the gear workpiece during heat treatment, guarantees the heat treatment effect, and improves the service life of the gear workpiece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gear heat treatment, in particular to a gear heat treatment device. BACKGROUND

[0002] Gear refers to the continuous meshing of the wheel rim with teeth to transmit motion and power. After the gear is formed, in order to effectively improve the strength and contact fatigue resistance of the gear, improve the wear resistance of the gear, and at the same time improve the toughness and hardness of the gear root, the gear needs to be heat treated.

[0003] As a Chinese patent with application number 202110632618.x, a gear heat treatment device is disclosed, which relates to the technical field of gear machining, comprising a base, a heating assembly is fixedly installed on the base, a rotating shaft one is horizontally rotatably installed in the heating assembly, a rotating shaft support one is fixedly installed on the base, a bottom rotating mechanism, a rotating clamping mechanism, a rotating gear mechanism, a pressing plate mechanism and a inserting rod mechanism are arranged on the base, a supporting rod two is fixedly installed on the base, a rotating shaft two is fixedly installed on the inner side wall of the supporting rod two, the bottom rotating mechanism is fixedly installed on the base, and the arc-shaped plate is driven to move upward by the upper support.

[0004] The gear heat treatment device of this structure still has the following defects to be improved: during the heat treatment of the gear, when the gear rotates intermittently, the heating assembly can only effectively heat treat one side of the gear, and the side of the gear facing away from the heating assembly cannot be effectively heated, so that the gear cannot be uniformly heated on both sides, thereby affecting the heat treatment effect of the gear. SUMMARY

[0005] The purpose of the present application is to solve the problems existing in the prior art and provide a gear heat treatment device.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] A gear heat treatment device, comprising a base, a rotating lifting part and a heat treatment part, the rotating lifting part comprising:

[0008] A driving column movably connected to the top outer wall of the base, and a driving gear fixed on the circumferential outer wall of the driving column through a pin:

[0009] An installation plate fixed to the top outer wall of the base, and a hydraulic cylinder fixed to one side outer wall of the installation plate, the output end of the hydraulic cylinder fixed with a rack engaged with the driving gear through a pin, and a roller pressing assembly fixed to the end of the rack away from the installation plate;

[0010] The guide frame is fixed to the outer wall of the top of the base, and the through hole in the top of the guide frame is movably connected with a guide column, the outer wall of the top of the guide column is movably connected with an adsorption disc, the outer wall of the top of the adsorption disc is welded with a hollow tube, and the outer wall of the top of the hollow tube is fixed with a lifting seat.

[0011] The spring is sleeved on the outer wall of the circumference of the guide column.

[0012] The V-shaped plate is welded to the outer wall of one side of the limiting piece through the connecting rod.

[0013] The bracket is welded to the outer wall of the top of the guide frame, and the through hole in the surface of the bracket is movably connected with a hollow column, the outer wall of the circumference of the hollow column is welded with an intermediate rod, and the outer wall of the top of the intermediate rod is fixed with an electromagnet through a screw.

[0014] The transmission part is used for transmission between the hollow column and the driving column.

[0015] Preferably, the roller assembly comprises a welded rod and a U-shaped frame, the welded rod is welded to the outer wall of one side of the rack, the U-shaped frame is welded to the end of the welded rod away from the rack, and the roller assembly further comprises a compression roller movably connected between the inner walls of the two sides of the U-shaped frame.

[0016] Preferably, the transmission part comprises a belt pulley two and a belt pulley one, the belt pulley two is fixed to the outer wall of the circumference of the driving column through a pin, the belt pulley one is fixed to the outer wall of the circumference of the hollow column through a pin, and the belt pulley one and the belt pulley two are driven by a belt.

[0017] Preferably, the heat treatment part comprises a heat treatment box and an electric heating wire, the electric heating wire is embedded in the inside of the heat treatment box, the heat treatment part further comprises a mounting seat welded to the outer wall of the top of the base, and the heat treatment box is fixed to the outer wall of the top of the mounting seat.

[0018] Preferably, the outer wall of the top of the base is fixed with a fixed rod, and the one end of the fixed rod is welded with a placing cylinder.

[0019] Preferably, the outer wall of the top of the driving column is welded with a containing shell, the outer wall of the top of the base is fixed with an L-shaped plate, the inner wall of the through hole in the top of the L-shaped plate is movably connected with a rotating column, the outer wall of the circumference of the rotating column is fixed with a coil spring through a pin, and the end of the coil spring away from the rotating column is fixed to the inner wall of the circumference of the containing shell through a pin.

[0020] Further, the outer wall of the top of the rotating column is fixed with a rotating disc, and the surface of the rotating disc is provided with a feeding hole matched with the outer diameter of the gear workpiece.

[0021] As a further scheme of the present application: the outer wall of the top of the base is fixed with a stand, the outer wall of the top of the stand is welded with an annular seat, and a discharging hole is formed on the surface of the annular seat, and the inner diameter of the discharging hole, the inner diameter of the feeding hole and the outer diameter of the lifting seat are mutually matched.

[0022] As a further scheme of the present application: the outer wall of the top of the base is fixed with a stand, the outer wall of the top of the stand is welded with an annular seat, and a discharging hole is formed on the surface of the annular seat, and the inner diameter of the discharging hole, the inner diameter of the feeding hole and the outer diameter of the lifting seat are mutually matched.

[0023] As a further scheme of the present application: the outer wall of the top of the base is fixed with a stand, the outer wall of the top of the stand is welded with an annular seat, and a discharging hole is formed on the surface of the annular seat, and the inner diameter of the discharging hole, the inner diameter of the feeding hole and the outer diameter of the lifting seat are mutually matched.

[0024] The present application has the following advantages: first, it can ensure the uniformity of the gear workpiece during heat treatment, thereby ensuring the heat treatment effect and improving the service life of the gear workpiece; second, it can realize automatic feeding of the gear workpiece, thereby reducing labor and material costs; third, the spring can play a connecting role, so that the feeding of the gear workpiece and the heat treatment of the gear workpiece are orderly performed without interference and mutual interference, and one hydraulic cylinder can realize the feeding and heat treatment of the gear workpiece, thereby reducing energy consumption and facilitating periodic processing of the gear workpiece; fourth, the hose can be used to introduce cooling gas, thereby cooling the gear workpiece after heat treatment, thereby ensuring the safety of the gear workpiece during discharging and avoiding the generation of danger caused by high temperature of the gear workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the present application;

[0026] Figure 2 is a schematic diagram of the bottom structure of the present application;

[0027] Figure 3 is a schematic diagram of the side direction structure of the present application;

[0028] Figure 4 is a schematic diagram of the explosion structure of the feeding part of the present application;

[0029] Figure 5 is a schematic diagram of the overall structure of the gear lifting part of the present application;

[0030] Figure 6 is a schematic diagram of the explosion structure of the gear lifting part of the present application;

[0031] Figure 7 is a schematic diagram of the overall structure of the driving part of the present application;

[0032] Figure 8It is a schematic diagram of the driving part local explosion structure of the application.

[0033] In the figure: 1-base, 2-mounting plate, 3-rotary disc, 4-placing cylinder, 5-stand, 6-heat treatment box, 7-electric heating wire, 8-flange, 9-linking rod, 10-hose, 11-hydraulic cylinder, 12-belt, 13-annular seat, 14-rotary column, 15-suction disc, 16-mounting seat, 17-fixing rod, 18-pushing rod, 19-feeding hole, 20-discharging hole, 21-limiting rod, 22-hollow column, 23-belt pulley one, 24-bracket, 25-electromagnet, 26-intermediate rod, 27-spring, 28-limiting sheet, 29-V-shaped plate, 30-actuating frame, 31-hollow pipe, 32-lifting seat, 33-welding rod, 34-U-shaped frame, 35-pressing roller, 36-L-shaped plate, 37-belt pulley two, 38-driving column, 39-accommodation shell, 40-coil spring, 41-driving gear, 42-rack, 43-guide column. Embodiment

[0034] The technical solutions of the patent will be further described in detail in combination with specific embodiments.

[0035] Embodiment one: as shown, it comprises base 1, rotary lifting part and heat treatment part, the rotary lifting part comprises: Figures 1-8 Driving column 38: it is rotationally connected to the top outer wall of base 1, and the circumferential outer wall of driving column 38 is fixed with driving gear 41 through a pin;

[0036] Mounting plate 2: it is fixed to the top outer wall of base 1 through bolts, and one side outer wall of mounting plate 2 is fixed with hydraulic cylinder 11 through bolts, the output end of hydraulic cylinder 11 is fixed with rack 42 engaged with driving gear 41 through a pin, and one end of rack 42 away from mounting plate 2 is fixed with roller pressing assembly;

[0037] Actuating frame 30: it is fixed to the top outer wall of base 1 through bolts, and the through hole in the top of actuating frame 30 is slidingly connected with guide column 43, the top outer wall of guide column 43 is rotationally connected with suction disc 15, the top outer wall of suction disc 15 is welded with hollow pipe 31, and the top outer wall of hollow pipe 31 is fixed with lifting seat 32 through bolts;

[0038] Spring 27: it is sleeved on the circumferential outer wall of guide column 43, and the two ends of spring 27 are respectively fixed to the top inner wall of actuating frame 30 and the top outer wall of limiting sheet 28 through pins;

[0039] V-shaped plate 29: it is welded to one side outer wall of limiting sheet 28 through linking rod 9;

[0040]

[0041] ​The support 24 is welded to the outer wall of the top of the driving support 30, and a through hole is arranged on the surface of the support 24 and is rotationally connected with the hollow column 22, the outer wall of the circumference of the hollow column 22 is welded with the intermediate rod 26, and the top outer wall of the intermediate rod 26 is fixed with the electromagnet 25 through a screw;

[0042] The hollow column 22 and the driving column 38 are driven by the transmission part;

[0043] The rack 42 can be driven to reciprocate in the transverse direction by the hydraulic cylinder 11, the driving gear 41 can drive the driving column 38 to rotate synchronously by the intermeshing of the rack 42 and the driving gear 41, and the synchronous rotation between the driving column 38 and the hollow column 22 can be realized by the transmission part;

[0044] The gear workpiece that needs to be heat treated can be placed on the lifting seat 32, the roller assembly is fixed at one end of the rack 42, so that the roller assembly can extrude the inclined surface part and the flat surface part of the V-shaped plate 29 by rolling during the transverse movement of the rack 42, when the roller assembly extrudes the inclined surface part of the V-shaped plate 29, the elastic deformation of the spring 27 drives the guide column 43 to move the gear workpiece placed on the lifting seat 32 downward to the heat treatment part for heat treatment, when the roller assembly moves to the flat surface part of the V-shaped plate 29, the deformation degree of the spring 27 tends to be stable and unchanged, at this time, the lower surface of the adsorption disc 15 moves to the surface of the electromagnet 25, at this time, the electromagnet 25 can adsorb the adsorption disc 15 by being electrified, so that the adsorption disc 15 can drive the gear workpiece to rotate during the heat treatment under the driving action of the electromagnet 25 and the hollow column 22, so as to effectively ensure the uniformity of the surface heating of the gear workpiece, thereby ensuring the heat treatment effect of the gear workpiece

[0045] The roller assembly comprises a welded rod 33 and a U-shaped frame 34, the welded rod 33 is welded to the outer wall of one side of the rack 42, the U-shaped frame 34 is welded to the end of the welded rod 33 away from the rack 42, and the roller assembly further comprises a compression roller 35 rotationally connected between the inner walls of the two sides of the U-shaped frame 34;

[0046] By arranging the compression roller 35, the compression roller 35 can first extrude the inclined surface part of the V-shaped plate 29 during the transverse movement of the rack 42, so that the gear workpiece can move downward to the heat treatment part for heat treatment, when the compression roller 35 moves to the flat surface part of the V-shaped plate 29, the electromagnet 25 can adsorb the lower surface of the adsorption disc 15, so that the gear workpiece can rotate during the heat treatment, thereby ensuring the uniformity of the heating.

[0047] The transmission part comprises pulley two 37 and pulley one 23, the pulley two 37 is fixed on the circumferential outer wall of the driving column 38 by a pin, the pulley one 23 is fixed on the circumferential outer wall of the hollow column 22 by a pin, the pulley one 23 and the pulley two 37 are driven by the belt 12;

[0048] The synchronous rotation between the driving column 38 and the hollow column 22 can be realized by the belt 12.

[0049] The heat treatment part comprises a heat treatment box 6 and an electric heating wire 7, the electric heating wire 7 is embedded in the heat treatment box 6, the electric heating wire 7 is in a spiral structure, the heat treatment part further comprises a mounting seat 16 welded on the top outer wall of the base 1, the heat treatment box 6 is fixed on the top outer wall of the mounting seat 16 by bolts;

[0050] The electric heating wire 7 can be heated by the heat treatment box 6, so that when the gear workpiece is placed in the electric heating wire 7, the electric heating wire 7 can heat treat the gear workpiece.

[0051] When the gear workpiece needs to be heat treated, the gear workpiece is placed on the top outer wall of the lifting seat 32, and then the hydraulic cylinder 11 is started, the hydraulic cylinder 11 drives the rack 42 to move horizontally, the rack 42 drives the driving gear 41 and the driving column 38 to rotate in the moving process, the hollow column 22 drives the electromagnet 25 to rotate in a certain range by the transmission part, the roller pressing part first extrudes the inclined surface part of the V-shaped plate 29 as the rack 42 continuously moves, the lifting seat 32 drives the gear workpiece to move downward under the elastic force of the spring 27, the electromagnet 25 is energized when the roller pressing part is about to move from the inclined surface part of the V-shaped plate 29 to the plane part of the V-shaped plate 29, the adsorption disc 15 moves to the position of the surface of the electromagnet 25 when the roller pressing part moves to the plane part of the V-shaped plate 29, the adsorption disc 15 is adsorbed by the electromagnet 25, so that the electromagnet 25 can drive the lifting seat 32 to rotate in the electric heating wire 7, so that the uniformity of the gear workpiece can be guaranteed, the lifting seat 32 is reset after heat treatment, so that the gear workpiece can be taken out after cooling, and the heat treatment of the gear workpiece is completed.

[0052] Embodiment two: as shown in the figure, in order to facilitate the automatic feeding of the gear workpiece, the following is added on the basis of embodiment 1: the top outer wall of the base 1 is fixed with a fixed rod 17 by bolts, one end of the fixed rod 17 is welded with a placing cylinder 4; Figures 1-7 The gear workpiece which needs to be heat treated can be stacked by the placing cylinder 4.

[0053] ​

[0054] The top outer wall of the driving column 38 is welded with a containing shell 39, the top outer wall of the base 1 is fixed with an L-shaped plate 36 through bolts, the through hole in the top of the L-shaped plate 36 is rotationally connected with a rotating column 14, the circumferential outer wall of the rotating column 14 is fixed with a coil spring 40 through a pin, the end of the coil spring 40 away from the rotating column 14 is fixed to the circumferential inner wall of the containing shell 39 through a pin, the top outer wall of the rotating column 14 is fixed with a rotating disc 3 through bolts, and the surface of the rotating disc 3 is provided with a feeding hole 19 matched with the outer diameter of the gear workpiece;

[0055] The top outer wall of the base 1 is fixed with a stand 5 through bolts, the top outer wall of the stand 5 is welded with an annular seat 13, and the surface of the annular seat 13 is provided with a discharging hole 20, the inner diameter of the discharging hole 20 is matched with the inner diameter of the feeding hole 19 and the outer diameter of the lifting seat 32;

[0056] The connection of the coil spring 40 enables the rotating column 14 to rotate during the rotation of the driving column 38, preferably, the number of the coil spring 40 is not limited in the embodiment, and the number of the coil spring 40 is adjusted to ensure that the driving column 38 and the rotating column 14 do not have relative displacement when the driving column 38 drives the rotating column 14 to rotate through the coil spring 40, the rotating disc 3 is driven to rotate by the rotating column 14, so that the gear workpiece at the bottom of the placing cylinder 4 can fall into the feeding hole 19 under the action of its own gravity when the feeding hole 19 moves to the bottom of the placing cylinder 4, and the annular seat 13 can support the bottom of the gear workpiece, thereby avoiding the gear workpiece from falling, and the gear workpiece can be safely and stably moved to the surface of the lifting seat 32 when the rotating disc 3 drives the gear workpiece to rotate along the upper surface of the annular seat 13 and moves to the discharging hole 20, so that the gear workpiece can be accurately fed.

[0057] The circumferential outer wall of the rotating disc 3 is fixed with a pushing rod 18 through bolts, and the circumferential outer wall of the annular seat 13 is fixed with a limiting rod 21 through bolts;

[0058] The limiting rod 21 and the pushing rod 18 can limit the maximum angle of rotation of the rotating disc 3, so that the rotating disc 3 cannot continue to move when the feeding hole 19 moves to overlap with the discharging hole 20, so that the gear workpiece can be accurately moved above the lifting seat 32, thereby accurately feeding the gear workpiece.

[0059] In this embodiment, during the initial stage of use, the loading hole 19 and the bottom opening of the placement cylinder 4 overlap, allowing the gear workpiece located at the bottom of the placement cylinder 4 to fall into the loading hole 19 under gravity. Simultaneously, the connecting action of the coil spring 40 allows the rack 42 to drive the rotating column 14 to rotate the rotating disk 3 during lateral movement, thus allowing the gear workpiece in the loading hole 19 to rotate along the upper surface of the annular seat 13. When the loading hole 19 moves to overlap with the unloading hole 20, the gear workpiece moves to the upper surface of the lifting seat 32, and the actuating rod 18 rotates to fit against the outer wall of the limiting rod 21. At this time, when the rack 42 continues to move laterally, the rotating disk 3 is limited, causing relative rotation between the driving column 38 and the rotating column 14, which causes the coil spring 40 to begin to helical deform. The helical deformation of the coil spring 40 ensures that the operation of heat treatment of the gear workpiece described in Embodiment 1 will not be interfered with.

[0060] Example 3: Figure 5 As shown, in order to facilitate the cooling of the heat-treated gear workpiece, the bottom of the limiting plate 28 is fixed with a hose 10 by bolts. One end of the hose 10 is integrally formed with a flange 8. The top of the lifting seat 32 is provided with an air hole, and the air hole is interconnected with the hollow tube 31, the guide post 43 and the hose 10.

[0061] After the gear workpiece has been heat-treated, cooling gas is introduced into the hose 10, so that the cooling gas acts on the surface of the gear workpiece through the air hole opened at the top of the lifting seat 32, thereby cooling the gear workpiece.

[0062] The above description represents a preferred embodiment of the present invention, but it is not the only embodiment of the present invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention, combined with existing technology or common knowledge, and within the spirit and principles of the present invention, should be covered within the protection scope of the present invention.

Claims

1. A heat treatment apparatus for gears, comprising a base (1), a rotating lifting part, and a heat treatment part, characterized in that, The rotary lifting unit includes: Drive column (38): It is movably connected to the top outer wall of the base (1), and the drive gear (41) is fixed to the outer circumference of the drive column (38) by a pin. Mounting plate (2): It is fixed to the top outer wall of the base (1), and a hydraulic cylinder (11) is fixed on one side of the outer wall of the mounting plate (2). The output end of the hydraulic cylinder (11) is fixed with a rack (42) that meshes with the drive gear (41) by a pin. A roller pressing assembly is fixed at the end of the rack (42) away from the mounting plate (2). Guide frame (30): It is fixed to the top outer wall of the base (1), and the inner wall of the through hole opened at the top of the guide frame (30) is movably connected to the guide post (43). The top outer wall of the guide post (43) is movably connected to the adsorption plate (15). The top outer wall of the adsorption plate (15) is welded to the hollow tube (31). The top outer wall of the hollow tube (31) is fixed to the lifting seat (32). Spring (27): It is sleeved on the outer circumference of the guide post (43); V-shaped plate (29): It is welded to the outer wall of one side of the limiting piece (28) by means of connecting rod (9); Support (24): It is welded to the top outer wall of the guide frame (30), and a hollow column (22) is movably connected to the through hole opened on the surface of the support (24). A middle rod (26) is welded to the outer circumference of the hollow column (22), and an electromagnet (25) is fixed to the top outer wall of the middle rod (26) by screws. The hollow column (22) and the drive column (38) are connected by a transmission mechanism.

2. The gear heat treatment apparatus according to claim 1, characterized in that, The roller pressing assembly includes a welding rod (33) and a U-shaped frame (34). The welding rod (33) is welded to the outer wall of one side of the rack (42), and the U-shaped frame (34) is welded to the end of the welding rod (33) away from the rack (42). The roller pressing assembly also includes a pressure roller (35) movably connected between the inner walls of both sides of the U-shaped frame (34).

3. The heat treatment apparatus for gears according to claim 2, characterized in that, The transmission unit includes pulley two (37) and pulley one (23). The pulley two (37) is fixed to the outer circumference of the drive column (38) by a pin. The pulley one (23) is fixed to the outer circumference of the hollow column (22) by a pin. The pulley one (23) and pulley two (37) are driven by a belt (12).

4. The heat treatment apparatus for gears according to claim 3, characterized in that, The heat treatment section includes a heat treatment box (6) and a heating wire (7), the heating wire (7) being embedded inside the heat treatment box (6). The heat treatment section also includes a mounting base (16) welded to the top outer wall of the base (1), and the heat treatment box (6) being fixed to the top outer wall of the mounting base (16).

5. A heat treatment apparatus for gears according to claim 4, characterized in that, A fixing rod (17) is fixed to the top outer wall of the base (1), and a placement cylinder (4) is welded to one end of the fixing rod (17).

6. A heat treatment apparatus for gears according to claim 5, characterized in that, The drive column (38) has a housing (39) welded to its top outer wall. The base (1) has an L-shaped plate (36) fixed to its top outer wall. The inner wall of the through hole at the top of the L-shaped plate (36) is movably connected to a rotating column (14). The outer circumference of the rotating column (14) is fixed with a coil spring (40) by a pin. The end of the coil spring (40) away from the rotating column (14) is fixed to the inner circumference of the housing (39) by a pin.

7. A heat treatment apparatus for gears according to claim 6, characterized in that, The rotating column (14) has a rotating disk (3) fixed on its top outer wall, and the rotating disk (3) has a feeding hole (19) on its surface that matches the outer diameter of the gear workpiece.

8. A heat treatment apparatus for gears according to claim 7, characterized in that, The base (1) has a column (5) fixed on its top outer wall. The column (5) has an annular seat (13) welded on its top outer wall. The annular seat (13) has a feeding hole (20) on its surface. The inner diameter of the feeding hole (20) is compatible with the inner diameter of the feeding hole (19) and the outer diameter of the lifting seat (32).

9. A heat treatment apparatus for gears according to claim 8, characterized in that, The rotating disk (3) has a toggle rod (18) fixed on its outer circumference, and the annular seat (13) has a limit rod (21) fixed on its outer circumference.

10. A heat treatment apparatus for gears according to claim 9, characterized in that, The bottom of the limiting plate (28) is fixed with a hose (10), and one end of the hose (10) is integrally formed with a flange (8). The top of the lifting seat (32) is provided with an air hole, and the air hole is connected to the hollow tube (31), the guide column (43) and the hose (10).

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