Exhaust valve surface segmented induction heating and quenching device and quenching method

Abstract

This invention relates to the field of heat treatment equipment technology, specifically to a segmented induction heating quenching device and method for exhaust valve surfaces. The device includes a base and a heating coil. A housing is fixedly connected to the top of one side of the base, and a rear cover is fixedly connected to the top of the other side of the housing. A C-shaped plate is fixedly connected to the inner side of the rear cover, and a sliding plate is slidably connected to the C-shaped plate. A second fixing plate is fixedly connected to the bottom of the C-shaped plate, and a rotating seat is fixedly connected to the outer wall of the second fixing plate. A switching assembly is provided on the inner side of the second fixing plate. The switching assembly includes a heating mold for adapting to grooves or protrusions on the exhaust valve surface. This invention achieves heating and quenching of the exhaust valve to a designated position through the cooperation of the switching assembly and the sliding plate, and simultaneously utilizes the driving force of the heating mold and the switching assembly to achieve heating and quenching of irregular shapes or grooves on the surface of a specific exhaust valve.

Description

Technical Field

[0001] This invention relates to the field of heat treatment equipment technology, and more specifically, to a segmented induction heating quenching device and quenching method for the surface of an exhaust valve. Background Technology

[0002] Segmented induction hardening is a highly efficient surface heat treatment process widely used in mechanical manufacturing, automotive powertrain systems, and heavy industry. It combines the high speed and precision of induction heating with the flexibility of a segmented process, aiming to achieve customized hardness distribution for different parts of a part, thereby balancing surface wear resistance and internal toughness.

[0003] Chinese publication number CN112522482A discloses a segmented induction hardening coil and heat treatment equipment, comprising: at least two hollow heating elements and a connecting unit. The at least two hollow heating elements are disposed on one side of the shaft to be processed and connected sequentially along the axial direction of the shaft. Each heating element has an input port at its upper end and an output port at its lower end. In two adjacent heating elements, the output port of the upper heating element is connected to the input port of the lower heating element, and the two adjacent heating elements can slide relative to each other radially along the shaft to be processed. The connecting unit includes a first mounting part with a first sliding groove, a second mounting part, and an adjusting component. The number of heating elements is increased or decreased according to the number of shaft segments to be processed. According to the change in the diameter of each shaft segment, the adjusting component moves the two adjacent heating elements radially along the shaft to be processed, realizing segmented heating adjustment, improving the heating method, increasing heating efficiency, and reducing production costs.

[0004] Although the aforementioned patent achieves segmented heating adjustment, improves heating efficiency, and reduces production costs by adjusting the components to move adjacent heating elements radially along the axis to be processed, it still has drawbacks. Considering that some exhaust valves have special grooves on their surface that need to be quenched, such as limiting grooves, sealing grooves, and exhaust / outlet grooves, their shape and size need to be taken into account. Furthermore, quenching exhaust valves on different devices requires multiple clamping operations by the operator, which is time-consuming and labor-intensive.

[0005] In view of this, we propose a segmented induction heating quenching device and quenching method for the surface of an exhaust valve. Summary of the Invention

[0006] The purpose of this invention is to provide a segmented induction heating quenching device and quenching method for the surface of an exhaust valve, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, on one hand, the present invention provides a segmented induction heating quenching device for the surface of an exhaust valve, comprising a base and a heating coil. A housing is fixedly connected to the top of one side of the base. A splicing assembly is provided on one side of the housing. A second electric slide rail is slidably connected to the inner side of the housing. An L-shaped plate is slidably connected to the second electric slide rail. A spray pipe is fixedly connected to the end of the L-shaped plate near the second electric slide rail. The splicing assembly includes: The back cover has a C-shaped plate detachably and fixedly connected to the upper side of one side. A sliding plate is slidably connected to the inner side of the C-shaped plate. A first fixing plate is fixedly connected to one side of the C-shaped plate. A second fixing plate is also fixedly connected to the bottom of the C-shaped plate. The heating coil is installed on one side of the C-shaped plate. A telescopic rod is fixedly connected through the C-shaped plate. A first fixing strip is fixedly connected to the bottom of the C-shaped plate. A second fixing strip is fixedly connected to the lower side of one side of the first fixing strip. A first rack is fixedly connected to the bottom of the first fixing strip. A second rack is fixedly connected to the lower side of the first rack via a C-shaped rod. A first fixing plate is fixedly connected to one side of the C-shaped plate. A second fixing plate is also fixedly connected to the bottom of the C-shaped plate. A switch assembly is provided on the inner side of the second fixing plate. A rotating seat is fixedly connected to one side of the second fixing plate. The switch assembly includes a second fixing post, which is fixedly connected to the surface of a second fixing plate. A motor is fixedly connected to the bottom of the second fixing post. The output end of the motor is fixedly connected to a connecting rod through the second fixing post. An arched strip is provided above the connecting rod. A first gear is meshed with one side of the second rack. A first threaded rod is fixedly connected to the top of the first gear.

[0008] As a preferred embodiment of the present invention, a first electric slide rail is installed on the top of the base, a sliding seat is slidably connected on the first electric slide rail, a first fixing post is fixedly connected to the top of the sliding seat, and a fixing claw is fixedly connected to one side of the first fixing post.

[0009] As a preferred embodiment of the present invention, a pressure block is fixedly connected to the end of the L-shaped plate away from the second electric slide rail, and the position of the pressure block matches the position of the telescopic rod.

[0010] As a preferred embodiment of the present invention, a baffle is fixedly connected to the top of the C-shaped plate, a plurality of No. 1 strip holes are opened on the side wall of the C-shaped plate, a No. 1 protruding post is fixedly connected to the inner wall of the C-shaped plate, and a plurality of No. 3 strip holes are opened on the surface of the No. 1 fixing plate, and the positions of the plurality of No. 3 strip holes and the No. 1 strip holes are matched.

[0011] As a preferred embodiment of the present invention, a second strip-shaped hole is provided on the side wall of the sliding plate, and the first protruding post is slidably connected in the second strip-shaped hole. A plurality of triangular holes are provided on the middle surface of the sliding plate, and the triangular holes are divided into a plurality of first holes and a second hole arranged side by side. A snap-fit ​​hole is provided through the lower end of each first hole, and the snap-fit ​​hole is matched with the position of the first strip-shaped hole. A smooth hole is also provided on the side wall of the sliding plate, which is connected through the second hole below. A second protruding post is fixedly connected to the surface of the sliding plate, and the second protruding post is connected to the first protruding post by a first spring.

[0012] As a preferred embodiment of the present invention, a third protruding column is fixedly connected to the top of the end of the connecting rod away from the second fixed column, and an arched hole is opened on the surface of the arched strip, and the third protruding column is slidably connected in the arched hole.

[0013] Preferably, one end of the arched strip is fixedly connected to the bottom of the first rack, the tooth grooves of the first rack and the second rack face opposite directions, the first gear is rotatably connected to the rotating seat, the outer wall of the first threaded rod is threadedly connected to the first slider, and the top of the first slider is fixedly connected to the connecting post, wherein: The connecting column is slidably connected to the inside of the rotating seat, and a heating mold is fixedly connected to the top of the connecting column.

[0014] Preferably, a second gear is meshed with one side of the first rack, and a second threaded rod is fixedly connected to the top of the second gear. The second threaded rod is rotatably connected between the C-shaped plate and the second fixing strip. A second slider is threadedly connected to the outer wall of the second threaded rod. The lower end of the telescopic rod is fixedly connected to the bottom inner wall of the C-shaped plate. The telescopic rod is provided in two sets, namely a first telescopic member and a second telescopic member. Multiple first telescopic members are arranged side by side, and one second telescopic member is provided. A third slider is fixedly connected to one side of each first telescopic member. The third slider is slidably connected in the third strip hole, and the third slider is fixedly connected to the second slider.

[0015] Preferably, in this invention, each of the first telescopic members has an extension rod fixedly connected to the side away from the third slider. The extension rod is slidably connected through the first strip hole and is arranged sequentially inside the first hole. A terminal block is fixedly connected to the end of the extension rod away from the first telescopic member. A heating coil is installed on the side of the terminal block away from the first telescopic member. The first telescopic component is aligned with the position of the buckle hole, the second telescopic component is aligned with the position of the smooth hole, the second telescopic component is provided with a guide block arranged inside the corresponding second hole, and the lower outer wall of the second telescopic component is fitted with a second spring.

[0016] On the other hand, the present invention also provides a method for segmented induction heating quenching of the surface of an exhaust valve, the operation steps of which are as follows: S1. First, after fixing the exhaust valve with the fixed clamp, adjust its position using the first electric slide rail and then start segmented induction heating quenching. S2. When the exhaust valve is conveyed through heating coils of different diameters, it is heated in sections, and after heating is completed, it is transported to the heating mold. S3. After reaching the position of the heating mold, the groove on the outer wall of the exhaust valve is heated and quenched by closing the upper and lower heating molds. Finally, after quenching, it is removed by the staff.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this segmented induction heating quenching equipment, the exhaust valve is aligned and quenched with multiple heating coils by the telescopic rod, rack and pinion transmission gear and threaded rod in the switching assembly, thus realizing the segmented quenching of the exhaust valve. The relative movement of the No. 2 rack and pinion transmission gear 1 and the No. 1 rack and pinion transmission gear 2 in the switching assembly causes the upper and lower heating molds to close, realizing the quenching of the groove or protrusion on the outer wall of the exhaust valve. The two different processes are integrated into one production line and the automatic flow is realized, which solves the technical problem of "multiple clamping, time-consuming and labor-intensive".

[0018] 2. In this segmented induction heating quenching equipment, the reciprocating motion of the connecting rod and the arched bar drives the No. 1 rack to reverse the transmission, so that each telescopic rod is reset to its initial state, so as to carry out the quenching of the next exhaust valve.

[0019] 3. In this segmented induction heating quenching equipment, the step-by-step triggering quenching effect of the exhaust valve is achieved through the cooperation of multiple triangular holes, multiple snap-fit ​​holes and smooth holes in the switch assembly with the telescopic rod. Compared with the electrical control system, it has lower manufacturing cost and simpler maintenance, and is especially suitable for industrial environments with mass production. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the segmented induction heating quenching equipment of the present invention; Figure 2 This is a three-dimensional schematic diagram of the overall outer shell of the segmented induction heating quenching equipment of the present invention. Figure 3 This is a three-dimensional schematic diagram of the base of the segmented induction heating quenching equipment of the present invention. Figure 4 This is a three-dimensional schematic diagram of the unfolded rear cover of the segmented induction heating quenching equipment of the present invention; Figure 5 This is a three-dimensional schematic diagram of the C-shaped plate unfolded in the segmented induction heating quenching equipment of the present invention; Figure 6 This is a three-dimensional schematic diagram of the switching components of the segmented induction heating quenching equipment of the present invention; Figure 7 This is a three-dimensional schematic diagram of the switch assembly and C-shaped plate positions of the segmented induction heating quenching equipment of the present invention; Figure 8 This is a three-dimensional schematic diagram showing the positions of the switch assembly and the C-shaped plate in the segmented induction heating quenching equipment of the present invention. Figure 9 This is a three-dimensional schematic diagram showing the detailed position of the telescopic rod in the segmented induction heating quenching equipment of the present invention; Figure 10 This is a detailed three-dimensional schematic diagram of the C-shaped plate of the segmented induction heating quenching equipment of the present invention.

[0021] The meanings of the labels in the diagram are as follows: 1. Base; 11. Electric slide rail No. 1; 12. Sliding seat; 13. Fixing post No. 1; 14. Fixing claw; 2. Outer shell; 21. Electric slide rail No. 2; 22. L-shaped plate; 23. Pressure block; 24. Spray pipe; 3. Splicing components; 31. Back cover; 32. C-shaped plate; 321. Baffle; 322. No. 1 strip hole; 323. No. 1 protruding post; 324. No. 1 fixing strip; 325. No. 2 fixing strip; 33. Sliding plate; 331. No. 2 strip hole; 332. Triangular hole; 3321. Buckle hole; 333. Smooth hole; 334. No. 2 protruding post; 3341. No. 1 spring; 34. No. 1 fixing plate; 341. No. 3 strip hole; 35. No. 2 fixing plate; 351. Rotating seat; 4. Heating coil; 5. Switch assembly; 51. Motor; 511. Fixed post No. 2; 52. Connecting rod; 521. Protruding post No. 3; 53. Arched strip; 531. Arched hole; 532. Rack No. 1; 533. Rack No. 2; 534. Gear No. 1; 535. Threaded rod No. 1; 5351. Slider No. 1; 536. Connecting post; 54. Heating mold; 55. Gear No. 2; 551. Threaded rod No. 2; 552. Slider No. 2; 56. Telescopic rod; 561. Slider No. 3; 562. Extension rod; 563. Terminal block; 564. Spring No. 2. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Example 1

[0025] Please see Figures 1-10 As shown, this embodiment provides a segmented induction heating quenching device for the surface of an exhaust valve, including a base 1 and a heating coil 4. A housing 2 is fixedly connected to the top of one side of the base 1. A splicing assembly 3 is provided on one side of the housing 2. A second electric slide rail 21 is slidably connected to the inner side of the housing 2. An L-shaped plate 22 is slidably connected to the second electric slide rail 21. A spray pipe 24 is fixedly connected to one end of the L-shaped plate 22 near the second electric slide rail 21. The splicing assembly 3 includes: The back cover 31 has a C-shaped plate 32 that is detachably and fixedly connected to the upper side of one side of the back cover 31. A sliding plate 33 is slidably connected to the inner side of the C-shaped plate 32. A first fixing plate 34 is fixedly connected to one side of the C-shaped plate 32. A second fixing plate 35 is also fixedly connected to the bottom of the C-shaped plate 32. The heating coil 4 is installed on the outer side of the C-shaped plate 32. A telescopic rod 56 is fixedly connected through the C-shaped plate 32. A first fixing strip 324 is fixedly connected to the bottom of the C-shaped plate 32. A second fixing strip 325 is fixedly connected to the lower side of the first fixing strip 324. A first rack 532 is fixedly connected to the bottom of the first fixing strip 324. A second rack 533 is fixedly connected to the lower side of the first rack 532 via a C-shaped rod. A first fixing plate 34 is fixedly connected to one side of the C-shaped plate 32. A second fixing plate 35 is also fixedly connected to the bottom of the C-shaped plate 32. A switch assembly 5 is provided on the second fixing plate 35. A rotating seat 351 is fixedly connected to one side of the second fixing plate 35. The switch assembly 5 includes a second fixing post 511, which is fixedly connected to the surface of the second fixing plate 35. A motor 51 is fixedly connected to the bottom of the second fixing post 511. A connecting rod 52 is fixedly connected to the output end of the motor 51 through the second fixing post 511. An arched strip 53 is provided above the connecting rod 52. A first gear 534 is meshed with one side of the second rack 533. A first threaded rod 535 is fixedly connected to the top of the first gear 534.

[0026] A baffle 321 is fixedly connected to the top of the C-shaped plate 32. Multiple first-shaped holes 322 are opened on the side wall of the C-shaped plate 32. A first-shaped protrusion 323 is fixedly connected to the inner wall of the C-shaped plate 32. Multiple third-shaped holes 341 are opened on the surface of the first fixing plate 34. The positions of the multiple third-shaped holes 341 and the first-shaped holes 322 are matched.

[0027] The sliding plate 33 has a second strip hole 331 on its side wall. A first protruding post 323 is slidably connected in the second strip hole 331. The middle surface of the sliding plate 33 has multiple triangular holes 332, which are divided into multiple first holes and one second hole arranged side by side. Each first hole has a through-hole 3321 at its lower end. The position of the through-hole 3321 matches that of the first strip hole 322. The sliding plate 33 also has a smooth hole 333 that is connected to the second hole below it. A second protruding post 334 is fixedly connected to the surface of the sliding plate 33. The second protruding post 334 is connected to the first protruding post 323 by a first spring 3341.

[0028] It should be noted that the first protrusion 323 and the second protrusion 334 connected by the two ends of the first spring 3341 connect the C-shaped plate 32 and the sliding plate 33, and the first spring 3341 generates a reset and rebound effect during the left and right movement of the sliding plate 33.

[0029] The connecting rod 52 has a third protruding post 521 fixedly connected to the top of the end away from the second fixed post 511. The surface of the arched strip 53 has an arched hole 531, and the third protruding post 521 is slidably connected in the arched hole 531.

[0030] One end of the arched bar 53 is fixedly connected to the bottom of the first rack 532. The tooth grooves of the first rack 532 and the second rack 533 face opposite directions. The first gear 534 is rotatably connected inside the rotating seat 351. The outer wall of the first threaded rod 535 is threadedly connected to the first slider 5351. The top of the first slider 5351 is fixedly connected to the connecting post 536. The connecting post 536 is slidably connected through the inner side of the rotating seat 351. The top of the connecting post 536 is fixedly connected to the heating mold 54.

[0031] Therefore, when it is necessary to align the position of heating coil 4 with the position of exhaust valve, such as Figures 5-8As shown, driven by motor 51, connecting rod 52 rotates. The rotation of connecting rod 52 causes the third protruding column 521 to rotate as well. During the rotation of the third protruding column 521, the arched strip 53 moves back and forth, and simultaneously, the arched strip 53 moves left and right, causing racks 532 and 533 to move left and right together. At this time, during the movement of rack 532, it passes one side of gear 55 and meshes with it. Figures 6-8 As shown, as the first rack 532 moves from left to right, it will also mesh with the second gear 55 from left to right in turn, and drive the second gear 55 to rotate in turn. As the second gear 55 rotates, it will drive the second threaded rod 551 to rotate. As the second threaded rod 551 rotates, it will drive the second slider 552 to slide down from the top, and together with the extension rod 562, the second slider 552 and the extension rod 562 will move down. At this time, the telescopic rod 56 retracts. Meanwhile, the extension rod 562 slides downward within the first strip hole 322, and when it passes the inclined position of the triangular hole 332, it drives the entire sliding plate 33 to move a small distance to the left. When the extension rod 562 moves to the position of the snap-fit ​​hole 3321, it is reset and rebounded by the first spring 3341, causing the extension rod 562 to snap into the snap-fit ​​hole 3321. As the first rack 532 drives each second gear 55 to rotate in sequence, each extension rod 562 snaps into the corresponding snap-fit ​​hole 3321 in sequence. At the same time, as the extension rod 562 moves downward, it also drives the wiring plate 563 to move downward together to the position where it fits with the outer wall of the exhaust valve and stops. The exhaust valve is then heated and quenched at the position of the heating coil 4 on the wiring plate 563.

[0032] Example 2

[0033] Unlike Embodiment 1, a second gear 55 is meshed with one side of the first rack 532. A second threaded rod 551 is fixedly connected to the top of the second gear 55. The second threaded rod 551 is rotatably connected between the C-shaped plate 32 and the second fixing strip 325. A second slider 552 is threadedly connected to the outer wall of the second threaded rod 551. The lower end of the telescopic rod 56 is fixedly connected to the bottom inner wall of the C-shaped plate 32. The telescopic rod 56 is provided in two sets, namely a first telescopic member and a second telescopic member. Multiple first telescopic members are arranged side by side, and one second telescopic member is provided. A third slider 561 is fixedly connected to one side of each first telescopic member. The third slider 561 is slidably connected in the third strip hole 341. The third slider 561 is fixedly connected to the second slider 552.

[0034] Each of the first telescopic components has an extension rod 562 fixedly connected to the side away from the third slider 561. The extension rod 562 is slidably connected through the first strip hole 322 and is arranged in sequence inside the first hole. The extension rod 562 has a terminal block 563 fixedly connected to the end away from the first telescopic component. The terminal block 563 has a heating coil 4 installed on the side away from the first telescopic component. The first telescopic component is matched with the position of the buckle hole 3321, and the second telescopic component is matched with the position of the smooth hole 333. The second telescopic component is provided with a guide block, which is arranged inside the corresponding second hole. The lower outer wall of the second telescopic component is fitted with a second spring 564.

[0035] It should be noted that, as Figure 8 As shown, the second telescopic member is rebounded by the second spring 564 at the lower end, and the extension rod 562 on the second telescopic member matches the position of the smooth hole 333.

[0036] Therefore, it can be concluded that, Figure 8 As shown, when rack 532 and rack 533 move to the right to the position of the rightmost gear 55, rack 533 will drive gear 534 to rotate. Under the action of the rotation of gear 534 and gear 55, threaded rods 535 and 551 will rotate together. At this time, the upper and lower heating molds 54 close inward together, enclosing the exhaust valve that has been delivered there. This makes the inner wall of the heating mold 54 fit with the groove of the outer wall of the exhaust valve, and quench the groove of the outer wall of the exhaust valve.

[0037] It should be noted that after the groove on the outer wall of the exhaust valve is quenched, rack 532 and rack 533 are simultaneously moved to the left by connecting rod 52 and arched bar 53, which causes the gear 55 on the side of the heating mold 54 to rotate in the opposite direction, causing the upper and lower heating molds 54 to unfold again. At this time, L-shaped plate 22 and spray pipe 24 pass between the upper and lower heating molds 54 and reach the position of the second telescopic component. At this time, the second telescopic component is contracted by the pressure of the pressure block 23, and the extension rod 562 is guided by the smooth hole 333 to move the sliding plate 33 to the right a certain distance. At this time, all extension rods 562 are disengaged from the buckle hole 3321. At the same time, during the process of rack 532 returning to the left, it drives the gear 55 to reverse and drives the first telescopic component to extend to its original state and then stop, so that the entire equipment is reset to the initial state.

[0038] Example 3

[0039] Unlike Embodiment 1, the top of the base 1 is equipped with a No. 1 electric slide rail 11, and a sliding seat 12 is slidably connected to the No. 1 electric slide rail 11. A No. 1 fixing post 13 is fixedly connected to the top of the sliding seat 12, and a fixing claw 14 is fixedly connected to one side of the No. 1 fixing post 13. It should be noted that the product structure of the No. 1 electric slide rail 11 and the sliding seat 12 is a common electromagnetic linear guide structure on the market. This solution only uses it and will not elaborate on it further. In addition, the fixing claw 14 is also an existing claw product, which is only used to cooperate with the No. 1 electric slide rail 11 and the sliding seat 12 to carry and stably transport the exhaust valve.

[0040] It should be noted that, as Figure 3 As shown, the exhaust valve is fixed by the fixed clamp 14 on one side, and the exhaust valve is gradually moved towards the heating coil 4 by the drive of the first electric slide rail 11.

[0041] The L-shaped plate 22 has a pressure block 23 fixedly connected to the end away from the second electric slide rail 21. The position of the pressure block 23 matches the position of the telescopic rod 56.

[0042] It should be noted that the No. 2 electric slide rail 21 drives the L-shaped plate 22 and the spray pipe 24 to move together with the exhaust valve, and sprays water to cool the quenched exhaust valve during controlled operation.

[0043] Therefore, when it is necessary to cool the exhaust valve during quenching, such as... Figures 1-3 As shown, while the exhaust valve is being transported by the first electric slide rail 11 and the fixed clamp 14 into the inner side of the heating coil 4 for quenching, the second electric slide rail 21 will drive the L-shaped plate 22 and the spray pipe 24 to move together with the exhaust valve to a position slightly misaligned with the heating coil 4. After the heating coil 4 has completed the quenching of this section of the exhaust valve, the spray pipe 24 will be used to spray water to cool the part that has just been quenched. It should be noted that, as Figure 2 As shown, the spray pipe 24 is C-shaped, with its opening facing the wiring plate 563 of the heating coil 4, allowing the spray pipe 24 to be misaligned with the heating coil 4. It stops before reaching the positions of the upper and lower heating molds 54 and retracts using the fixing jaws 14 (as shown). Figure 2 After moving a short distance from the center to the right, it is sprayed again, and finally transported to the leftmost position by the movement of the left fixed claw 14, and the quenched exhaust valve is removed by the staff.

[0044] Example 4

[0045] This embodiment provides a segmented induction heating quenching method for the surface of an exhaust valve, including the following steps: S1. First, after fixing the exhaust valve with the fixed clamp 14, adjust its position using the No. 1 electric slide rail 11 and then start segmented induction heating quenching. S2. When the exhaust valve is conveyed through heating coils 4 of different diameters, it is heated in sections. After heating is completed, it is transported to the heating mold 54. S3. After reaching the position of the heating mold 54, the groove on the outer wall of the exhaust valve is heated and quenched by closing between the upper and lower heating molds 54. Finally, after the quenching is completed, it is removed by the staff.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A segmented induction heating quenching device for the surface of an exhaust valve, comprising a base (1) and a heating coil (4), characterized in that: A housing (2) is fixedly connected to the top of one side of the base (1). A splicing assembly (3) is provided on one side of the housing (2). A second electric slide rail (21) is slidably connected to the inner side of the housing (2). An L-shaped plate (22) is slidably connected to the second electric slide rail (21). A spray pipe (24) is fixedly connected to one end of the L-shaped plate (22) near the second electric slide rail (21). The splicing assembly (3) includes: The back cover (31) has a C-shaped plate (32) detachably fixedly connected to the upper side of one side of the back cover (31). A sliding plate (33) is slidably connected to the inner side of the C-shaped plate (32). A first fixing plate (34) is fixedly connected to one side of the C-shaped plate (32). A second fixing plate (35) is also fixedly connected to the bottom of the C-shaped plate (32). The heating coil (4) is installed on the outer side of the C-shaped plate (32). A telescopic rod (56) is fixedly connected through the C-shaped plate (32). The bottom of the C-shaped plate (32) is fixedly connected to a first fixing strip (324), and a second fixing strip (325) is fixedly connected to the lower side of one side of the first fixing strip (324). The bottom of the first fixing strip (324) is fixedly connected to a first rack (532), and a second rack (533) is fixedly connected to the lower side of the first rack (532) via a C-shaped rod. A first fixing plate (34) is fixedly connected to one side of the C-shaped plate (32), and a second fixing plate (35) is also fixedly connected to the bottom of the C-shaped plate (32). A switch assembly (5) is provided on the second fixing plate (35), and a rotating seat (351) is fixedly connected to one side of the second fixing plate (35). The switch assembly (5) includes a second fixing post (511), which is fixedly connected to the surface of the second fixing plate (35). A motor (51) is fixedly connected to the bottom of the second fixing post (511). A connecting rod (52) is fixedly connected to the output end of the motor (51) through the second fixing post (511). An arched strip (53) is provided above the connecting rod (52). A first gear (534) is meshed with one side of the second rack (533). A first threaded rod (535) is fixedly connected to the top of the first gear (534).

2. The segmented induction heating quenching equipment for the surface of an exhaust valve according to claim 1, characterized in that: The base (1) has a first electric slide rail (11) installed on its top. A sliding seat (12) is slidably connected to the first electric slide rail (11). A first fixed column (13) is fixedly connected to the top of the sliding seat (12). A fixed claw (14) is fixedly connected to one side of the first fixed column (13).

3. The segmented induction heating quenching equipment for the surface of an exhaust valve according to claim 2, characterized in that: The L-shaped plate (22) has a pressure block (23) fixedly connected to the end away from the second electric slide rail (21), and the position of the pressure block (23) matches the position of the telescopic rod (56).

4. The segmented induction heating quenching equipment for the surface of an exhaust valve according to claim 3, characterized in that: A baffle (321) is fixedly connected to the top of the C-shaped plate (32). Multiple first-shaped holes (322) are opened on the side wall of the C-shaped plate (32). A first-shaped protruding column (323) is fixedly connected to the inner wall of the C-shaped plate (32). Multiple third-shaped holes (341) are opened on the surface of the first-fixed plate (34). The positions of the multiple third-shaped holes (341) and the first-shaped holes (322) are matched.

5. The segmented induction heating quenching equipment for the surface of an exhaust valve according to claim 4, characterized in that: The sliding plate (33) has a second strip hole (331) on its side wall. The first protruding post (323) is slidably connected in the second strip hole (331). The middle surface of the sliding plate (33) has multiple triangular holes (332), and the triangular holes (332) are divided into multiple first holes and one second hole arranged side by side. The lower end of each first hole is provided with a snap-fit ​​hole (3321). The snap-fit ​​hole (3321) is matched with the first strip hole (322). The side wall of the sliding plate (33) also has a smooth hole (333) that is connected to the second hole. The surface of the sliding plate (33) is fixedly connected with a second protruding post (334). The second protruding post (334) and the first protruding post (323) are connected by a first spring (3341).

6. The segmented induction heating quenching equipment for the surface of an exhaust valve according to claim 5, characterized in that: The connecting rod (52) has a third protruding post (521) fixedly connected to the top of the end away from the second fixed post (511). The surface of the arched strip (53) has an arched hole (531), and the third protruding post (521) is slidably connected in the arched hole (531).

7. The segmented induction heating quenching equipment for the surface of an exhaust valve according to claim 6, characterized in that: One end of the arched bar (53) is fixedly connected to the bottom of the first rack (532). The tooth grooves of the first rack (532) and the second rack (533) face opposite directions. The first gear (534) is rotatably connected inside the rotating seat (351). The outer wall of the first threaded rod (535) is threadedly connected to the first slider (5351). The top of the first slider (5351) is fixedly connected to the connecting column (536). The connecting column (536) is slidably connected to the inner side of the rotating seat (351), and a heating mold (54) is fixedly connected to the top of the connecting column (536).

8. The segmented induction heating quenching equipment for the surface of an exhaust valve according to claim 7, characterized in that: The first rack (532) is meshed with a second gear (55) on one side. The top of the second gear (55) is fixedly connected to a second threaded rod (551). The second threaded rod (551) is rotatably connected between the C-shaped plate (32) and the second fixing strip (325). The outer wall of the second threaded rod (551) is threadedly connected to a second slider (552). The lower end of the telescopic rod (56) is fixedly connected to the bottom inner wall of the C-shaped plate (32). The telescopic rod (56) is provided in two sets, namely a first telescopic member and a second telescopic member. Multiple first telescopic members are arranged side by side, and one second telescopic member is provided. A third slider (561) is fixedly connected to one side of each first telescopic member. The third slider (561) is slidably connected in the third strip hole (341). The third slider (561) is fixedly connected to the second slider (552).

9. The segmented induction heating quenching equipment for the surface of an exhaust valve according to claim 8, characterized in that: Each of the first telescopic components has an extension rod (562) fixedly connected to the side away from the third slider (561). The extension rod (562) slides through and is connected to the first strip hole (322), and is arranged sequentially inside the first hole. A terminal block (563) is fixedly connected to the end of the extension rod (562) away from the first telescopic component. A heating coil (4) is installed on the side of the terminal block (563) away from the first telescopic component. The first telescopic member is aligned with the buckle hole (3321), the second telescopic member is aligned with the smooth hole (333), the second telescopic member is provided with a guide block arranged inside the corresponding second hole, and the lower outer wall of the second telescopic member is fitted with a second spring (564).

10. A method for segmented induction heating quenching of the surface of an exhaust valve, characterized in that, The segmented induction heating quenching equipment according to claim 9 includes the following method steps: S1. First, after fixing the exhaust valve with the fixed clamp (14), adjust the position of the exhaust valve with the first electric slide rail (11) and then start segmented induction heating quenching. S2. When the exhaust valve is conveyed through heating coils (4) of different diameters, it is heated in sections. After heating is completed, it is transported to the heating mold (54). S3. After reaching the position of the heating mold (54), the groove on the outer wall of the exhaust valve is heated and quenched by closing between the upper and lower heating molds (54). Finally, after the quenching is completed, it is removed by the staff.

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