CN219363732U

CN219363732U - Quenching device for double-station cam shaft

Info

Publication number: CN219363732U
Application number: CN202223359571.3U
Authority: CN
Inventors: 徐宁; 罗力成; 朱瑞
Original assignee: Ningbo Shenglong Zhizao Camshaft Co ltd
Current assignee: Ningbo Shenglong Zhizao Camshaft Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-07-18
Anticipated expiration: 2032-12-12

Abstract

The utility model provides a double-station camshaft quenching device which comprises a conductive connecting seat and two groups of mutually independent quenching components, wherein one ends of the two groups of quenching components are respectively connected with the conductive connecting seat, and the other ends of the two groups of quenching components are respectively connected with induction coils for a camshaft to pass through; the conductive connecting seat is connected with an insulating fixing plate which is horizontally arranged, and two induction coils are connected to two sides of the insulating fixing plate at intervals; each induction coil comprises a large-diameter coil for accommodating a cam plate part of the camshaft and a small-diameter coil for accommodating a shaft body part of the camshaft, and the large-diameter coil and the small-diameter coil are communicated to form a horizontal 8-shaped through hole. The double-station camshaft quenching device disclosed by the utility model can quench two groups of products simultaneously, can be suitable for induction heating of camshaft cam sheets and shaft diameters simultaneously in the same induction coil, reduces the time of mold changing and debugging, and improves the production efficiency.

Description

Quenching device for double-station cam shaft

Technical Field

The utility model relates to the technical field of camshaft surface treatment, in particular to a double-station camshaft quenching device.

Background

The cam shaft is a component in a piston engine, the main body is a cylindrical rod body with the length approximately the same as that of the cylinder group, the shaft body is sleeved with a plurality of cams for driving the valve and oil pump wheels, and the position of each cam is limited by the axial direction and the circumferential direction. The cam shaft is used for controlling the opening and closing time of the inlet valve and the outlet valve of each cylinder to meet a certain working program, controlling the change rule of the opening degree of the valve and driving accessories such as a gasoline pump, an oil pump, a distributor and the like to work. The cam shaft has the components of intake cam, exhaust cam, journal, etc. Because the cam and tappet of the cam shaft have friction in the rotation process of the shaft diameter and the bearing bush, the hardness of the cam and the shaft diameter needs to be further improved.

Currently, the hardness of the camshaft is treated by quenching heat. The heat treatment mode used at present is a single-coil induction coil heating mode for quenching, and the mode has the defect that the single coil is only suitable for independently processing the cam or the shaft diameter, and synchronous processing cannot be realized. In addition, the existing induction coil can only treat the journal or the cam sheet independently due to the limitation of the inner hole, so that the camshaft product requiring heat treatment of the journal and the cam sheet simultaneously needs to be subjected to multiple times of mold changing or multiple times of quenching, and then the whole heat treatment process can be realized, thereby influencing the efficiency.

Disclosure of Invention

The utility model solves the problems that: at least one defect in the prior art is overcome, a double-station camshaft quenching device is provided, induction heating of camshaft cam sheets and shaft diameters can be synchronously carried out, the mold changing and debugging time is shortened, and the production efficiency is improved.

In order to solve the problems, the utility model provides a double-station camshaft quenching device, which comprises a conductive connecting seat and two groups of mutually independent quenching components, wherein one ends of the two groups of quenching components are respectively connected with the conductive connecting seat, and the other ends of the two groups of quenching components are respectively connected with induction coils for a camshaft to pass through; the conductive connecting seat is connected with an insulating fixing plate which is horizontally arranged, and the two induction coils are connected to two sides of the insulating fixing plate at intervals; each induction coil comprises a large-diameter coil for accommodating a cam plate part of a cam shaft and a small-diameter coil for accommodating a shaft body part of the cam shaft, and the large-diameter coil is communicated with the small-diameter coil to form a horizontal 8-shaped through hole.

Compared with the prior art, the utility model has the advantages that:

according to the double-station camshaft quenching device, two groups of induction coils are connected on one conductive connecting seat at the same time, so that two groups of cam quenching treatment can be performed at the same time; in addition, each induction coil comprises a large-diameter coil for accommodating the cam sheet part of the camshaft and a small-diameter coil for accommodating the shaft body part of the camshaft, so that the induction coils can be used for heat treatment of the shaft neck and the cam sheet in the same induction coil channel, and especially when the shaft neck quenching is needed and the cam sheet quenching is needed, the position of the camshaft in the induction coil channel is only required to be moved, and no other induction coil is required to be replaced, namely, the change-over debugging time is shortened, and the production efficiency is effectively improved.

As an improvement, the induction coil is a quenching copper pipe with a hollow inside, and the quenching assembly further comprises a water inlet copper pipe and a water outlet copper pipe which are communicated with the quenching copper pipe so as to realize cooling of the quenching copper pipe. In the improved structure, a hollow quenching copper pipe is selected as the induction coil, and cooling liquid can be introduced into the inner cavity of the quenching copper pipe to timely take away heat of the copper pipe, so that the stability and reliability of quenching performance are ensured.

And the quenching copper pipe is provided with a notch, so that the middle of the quenching copper pipe is disconnected to form an inlet and an outlet which are mutually independent, the inlet is communicated with one end of the water inlet copper pipe, and the outlet is communicated with one end of the water outlet copper pipe. In the improved structure, the quenching copper pipe is provided with the independent inlet and outlet and is respectively connected with the water inlet copper pipe and the water outlet copper pipe, so that the internal cooling confirmation circulation of the quenching copper pipe is more efficient.

And further improved, a first insulating partition plate is arranged between the water inlet copper pipe and the water outlet copper pipe of each group of quenching assemblies, and one end of the first insulating partition plate extends to the position where the inner walls of the 8-shaped through holes are flush along the notch. In the improved structure, the first insulating partition plate can prevent accidental short circuit from occurring between the water inlet copper pipe and the water outlet copper pipe, and the heat treatment of the product is unqualified.

The conductive connecting seat comprises two connecting plates which are close to each other and are mutually independent, and a second insulating partition plate is connected between the two connecting plates; one ends of the two water inlet copper pipes, which are far away from the quenching copper pipes, are respectively connected to the outer walls of one sides of the two connecting plates, which are far away from the insulating partition plates; the two connecting plates are respectively provided with mounting plates which are bent towards the direction away from the second insulating partition plate at one ends of the connecting plates, which are away from the quenching copper tubes, and water inlet interfaces of the two water inlet copper tubes are respectively arranged on the two mounting plates.

And the insulating fixing plate is connected with a water outlet joint, one ends of the two water outlet copper pipes, which are far away from the induction coil, are communicated with one end of the water outlet joint, and the other end of the water outlet joint is connected with a connecting hose. In the improved structure, the two groups of quenching assemblies are connected out through the same water outlet joint, so that the assembly and disassembly are convenient, and the water outlet joint is provided with the connecting hose, so that the water outlet joint is connected with external equipment without being limited by angles, and the connection is more convenient.

And the two sides of the width direction of the insulating fixing plate are respectively connected with fixing columns which are vertically arranged, the upper ends of the two fixing columns are respectively connected with the insulating fixing plate in a threaded mode with adjustable height, and the lower ends of the two fixing columns are respectively connected with the outer walls of the two induction coils. In the above-mentioned improvement structure, realize induction coil's connection through the fixed column to the upper end and the insulating fixed plate of fixed column are connected highly adjustable, guarantee induction coil mounted position's accuracy, make things convenient for the heat treatment at camshaft corresponding position.

Drawings

FIG. 1 is a schematic diagram of a dual camshaft quench of the present utility model;

fig. 2 is a rear view of the duplex camshaft quench of the present utility model.

Reference numerals illustrate:

1. an induction coil; 1.1, a large-diameter coil; 1.2, a small-diameter coil; 2. an insulating fixing plate; 3. a water inlet copper pipe; 4. a water outlet copper pipe; 5. a first insulating spacer; 6. a connecting plate; 7. a second insulating spacer; 8. a mounting plate; 9. a water inlet port; 10. a water outlet joint; 11. a connecting hose; 12. and fixing the column.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper end", "lower end", "outer wall", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the term "connected" should be interpreted broadly, and for example, it may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 and 2, the utility model provides a double-station camshaft quenching device, which comprises a conductive connecting seat and two groups of mutually independent quenching components, wherein one ends of the two groups of quenching components are respectively connected with the conductive connecting seat, the other ends of the two groups of quenching components are respectively connected with an induction coil 1 for a camshaft to pass through, high-frequency current is generated through the energization of the induction coil 1, a high-frequency magnetic field is generated, induced current is generated in a ferromagnetic material, and due to skin effect, the induced current is accumulated on the surface of the material to generate heat, so that the phase transition temperature is reached, and the induction heating of the corresponding part of the camshaft penetrating in the induction coil 1, namely the surface quenching treatment of the camshaft is realized.

In the structure, the conductive connecting seat is connected with the insulating fixing plate 2 in a horizontal arrangement, the two induction coils 1 are connected to two sides of the insulating fixing plate 2 at intervals, specifically, two sides of the insulating fixing plate 2 in the width direction are respectively connected with the fixing columns 12, and the lower ends of the fixing columns 12 are respectively connected with the two induction coils 1; in this embodiment, preferably, the fixing column 12 is directly selected from a stud, the upper end of the stud is in threaded connection with the insulating fixing plate 2, the connection height is adjustable, and in order to further improve the connection strength, the stud is connected by matching with a corresponding locking nut; the lower end of the stud is welded and fixed with the outer wall of the induction coil 1 through a fixed block, so that the induction coil 1 is stably connected.

In yet another aspect, the two induction coils 1 in the present embodiment each include a large diameter coil 1.1 for accommodating the cam plate portion of the camshaft and a small diameter coil 1.2 for accommodating the shaft portion of the camshaft, and the large diameter coil 1.1 communicates with the small diameter coil 1.2 to form a horizontal "8" -shaped through hole, i.e., there is a quenching space corresponding to the shaft portion of the camshaft and a quenching space corresponding to the cam plate portion of the camshaft in the same induction coil 1 channel. As shown in fig. 1, the large diameter coil 1.1 and the small diameter coil 1.2 are two circular ring structures with different diameters, and the two circular rings are connected into a finished closed ring structure in a welding manner, and the inside of the closed ring structure is ensured to be communicated. Thus, the corresponding part of the cam shaft can be ensured to realize quenching heat treatment better. The heat treatment of the shaft neck and the cam sheet can be realized in the same induction coil 1 without changing the coil model, so that the time for changing the shape and debugging is shortened, and the heat treatment efficiency is effectively improved.

Preferably, the induction coil 1 is a quenching copper pipe with a hollow inside, and in addition, the quenching assembly further comprises a water inlet copper pipe 3 and a water outlet copper pipe 4 which are communicated with the quenching copper pipe, so that cooling liquid can be introduced into the quenching copper pipe to cool the quenching copper pipe. More specifically, in the structure, a notch is formed on the quenching copper pipe, the middle of the quenching copper pipe is disconnected through the notch, an inlet and an outlet which are mutually independent are formed at two sides of the disconnected position, the inlet is communicated with one end of the water inlet copper pipe 3, and the outlet is communicated with one end of the water outlet copper pipe 4; in the structure, the other ends of the water inlet copper pipe 3 and the water outlet copper pipe 4 are respectively connected to cooling water circulation equipment.

In addition, in this embodiment, in order to optimize the pipeline structure, the positions of the water inlet copper pipe 3 and the water outlet copper pipe 4 close to the quenching coils are close to each other, and in order to avoid accidental short circuit, a first insulating partition plate 5 is arranged between the water inlet copper pipe 3 and the water outlet copper pipe 4 of each group of quenching assemblies, and one end of the first insulating partition plate 5 extends to the position of the inner wall of the 8-shaped through hole along the notch.

As shown in fig. 1 and 2, the conductive connecting seat comprises two connecting plates 6 which are close to each other and are mutually independent, and a second insulating partition 7 is connected between the two connecting plates 6; one ends of the two water inlet copper pipes 3, which are far away from the quenching copper pipes, are respectively connected to the outer walls of one sides of the two connecting plates 6, which are far away from the insulating partition plates; the one end that quenching copper pipe was kept away from to two connecting plates 6 all is equipped with the mounting panel 8 that buckle towards keeping away from the 7 directions of second insulating barrier, and two specific mounting panels 8 set up perpendicularly with two connecting plates 6 respectively to two mounting panels 8 are in same horizontal plane, and two water inlet interface 9 of intaking copper pipe 3 set up respectively on two mounting panels 8, and the convenience is connected with cooling arrangement.

As shown in fig. 1, the insulating fixing plate 2 is connected with a water outlet joint 10, one ends of the two water outlet copper tubes 4 far away from the induction coil 1 are all communicated to one end of the water outlet joint 10, and the other end of the water outlet joint 10 is connected with a connecting hose 11, so that the water outlet joint is convenient to be connected with external cooling liquid circulation equipment.

Although the present disclosure is disclosed above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the disclosure.

Claims

1. A duplex position camshaft guenching unit, its characterized in that: the quenching device comprises a conductive connecting seat and two groups of quenching components which are mutually independent, wherein one ends of the two groups of quenching components are respectively connected with the conductive connecting seat, and the other ends of the two groups of quenching components are respectively connected with an induction coil (1) for a camshaft to pass through; the conductive connecting seat is connected with an insulating fixing plate (2) horizontally, and the two induction coils (1) are connected to two sides of the insulating fixing plate (2) at intervals; each induction coil (1) comprises a large-diameter coil for accommodating a cam plate part of a cam shaft and a small-diameter coil (1.2) for accommodating a shaft body part of the cam shaft, and the large-diameter coil is communicated with the small-diameter coil (1.2) to form a horizontal 8-shaped through hole.

2. The dual-station camshaft quench apparatus of claim 1, wherein: the induction coil (1) is a quenching copper pipe with a hollow inside, and the quenching assembly further comprises a water inlet copper pipe (3) and a water outlet copper pipe (4) which are communicated with the quenching copper pipe so as to realize cooling of the quenching copper pipe.

3. The dual-station camshaft quench apparatus of claim 2, wherein: the quenching copper pipe is provided with a notch, so that an inlet and an outlet which are mutually independent are formed by disconnecting the middle of the quenching copper pipe, the inlet is communicated with one end of the water inlet copper pipe (3), and the outlet is communicated with one end of the water outlet copper pipe (4).

4. A duplex position camshaft quench apparatus as in claim 3, wherein: a first insulating partition plate (5) is arranged between the water inlet copper pipe (3) and the water outlet copper pipe (4) of each group of quenching assembly, and one end of the first insulating partition plate (5) extends to the position where the inner walls of the 8-shaped through holes are flush along the notch.

5. The dual-station camshaft quench apparatus of claim 2, wherein: the conductive connecting seat comprises two connecting plates (6) which are close to each other and are mutually independent, and a second insulating partition plate (7) is connected between the two connecting plates (6); one ends of the two water inlet copper pipes (3) far away from the quenching copper pipes are respectively connected to the outer walls of one sides of the two connecting plates (6) far away from the insulating partition plates; one end of each connecting plate (6) far away from the quenching copper pipe is provided with a mounting plate (8) which bends towards the direction far away from the second insulating partition plate (7), and water inlet interfaces (9) of each water inlet copper pipe (3) are respectively arranged on the two mounting plates (8).

6. The dual-station camshaft quench apparatus of claim 4, wherein: the water outlet pipe is characterized in that a water outlet connector (10) is connected to the insulating fixing plate (2), one end, away from the induction coil (1), of each water outlet copper pipe (4) is communicated to one end of the water outlet connector (10), and the other end of the water outlet connector (10) is connected with a connecting hose (11).

7. The duplex camshaft quench apparatus according to any one of claims 1 to 6, wherein: the two sides of the width direction of the insulating fixing plate (2) are respectively connected with fixing columns (12) which are vertically arranged, the upper ends of the two fixing columns (12) are respectively connected with the insulating fixing plate (2) in a threaded mode with adjustable height, and the lower ends of the two fixing columns are respectively connected with the outer walls of the induction coils (1).