High-frequency heat treatment device

Abstract

The high-frequency heat treatment device comprises a conveying rotary table, arc bases are evenly machined at the position, close to the circumference, of the conveying rotary table, a transparent part is formed between every two adjacent arc bases, and positioning mechanisms are installed on the arc bases and used for containing workpieces; the transferring mechanism is arranged above the left portion of the conveying rotary disc and comprises a cross beam rotationally arranged on the upper portion of the rack, hydraulic driving bases are arranged at the two ends of the cross beam, and hydraulic chucks are arranged on the lower portions of the hydraulic driving bases and used for clamping workpieces. The discharging mechanism is arranged below the left part of the cross beam and comprises a material box with cooling water, and a lifting belt is arranged in the material box; and the induction heating coil is arranged above the discharging mechanism. According to the device, a workpiece is placed on the positioning mechanism and is fed along with the rotation of the conveying turntable, the workpiece is clamped and positioned by a hydraulic chuck in the transferring mechanism and then is transferred into an induction heating coil for quenching treatment, and the workpiece is discharged by the discharging mechanism. Feeding, transferring, quenching and discharging processes of workpieces are automatically completed, the automation degree is high, and the working efficiency is high.

Description

Technical Field

[0001] The utility model relates to a high-frequency heat treatment device. Background Art

[0002] The heat treatment of metal castings refers to a metal hot working process in which metal materials are heated, held, and cooled in a solid state to change the chemical composition and structure on the surface or inside of the materials and obtain the required properties. As Figure 6 shown in the workpiece 4, after preliminary forming, heat treatment is required before subsequent processing. In the existing heat treatment process, manual operation is mostly adopted. After the workpiece is clamped and positioned by a special fixture, it is moved into the high-frequency induction coil for heating, and then moved out to the cooling mechanism for cooling. This not only has low efficiency but also has potential safety hazards. Summary of the Utility Model

[0003] In view of the deficiencies in the above problems, the utility model provides a high-frequency heat treatment device.

[0004] To achieve the above object, the utility model provides a high-frequency heat treatment device, including

[0005] a conveying turntable, the middle of the conveying turntable is connected with a cam divider, the overall structure of the conveying turntable is petal-shaped, arc bases are uniformly machined near the circumference of the conveying turntable, a hollow part is formed between adjacent arc bases, a positioning mechanism is installed on the arc bases, the positioning mechanism includes positioning blocks, the positioning blocks are centrosymmetrically distributed, one end of the positioning block is connected with the arc base by a bolt, a positioning rod is fixedly arranged at the other end of the positioning block, a movable bottom plate is sleeved on the positioning rod, and a containing space for the workpiece is jointly enclosed by the positioning rod and the movable bottom plate. Convex edges are radially extended from both side edges of the movable bottom plate and extend beyond the edge of the arc base;

[0006] a jacking plate, the jacking plate is arranged below the left part of the conveying turntable, a groove is machined on the side of the jacking plate facing the conveying turntable, the groove matches the outer shape of the arc base, and support parts are formed on the front and rear sides of the groove, and the support parts are arranged corresponding to the convex edges;

[0007] a transfer mechanism, the transfer mechanism is arranged above the left part of the conveying turntable, the transfer mechanism includes a cross beam, the cross beam is rotatably arranged on the upper part of the frame, mounting positioning plates are symmetrically arranged at both ends of the cross beam, a hydraulic driving seat is slidably connected with the mounting positioning plate through a guide rail, a hydraulic chuck is arranged below the hydraulic driving seat, and an expansion head is arranged on the hydraulic chuck;

[0008] a discharging mechanism, the discharging mechanism is arranged below the left part of the cross beam, the discharging mechanism includes a material box with cooling water, and a lifting belt is arranged in the material box;

[0009] An induction heating coil, the induction heating coil is arranged above the discharging mechanism, and the induction heating coil is connected to a high-frequency heating machine.

[0010] As a further improvement of the present utility model, waist-shaped grooves are machined on the movable bottom plate corresponding to the positioning rods one by one, and the positioning rods are fitted through the waist-shaped grooves.

[0011] As a further improvement of the present utility model, a limiting rod is provided at the center of the arc-shaped base, and a limiting hole is machined at the center of the movable bottom plate corresponding to the limiting rod.

[0012] As a further improvement of the present utility model, the middle part of the jacking plate is threadedly connected to the lead screw, and the left part of the jacking plate is slidably connected to the guide rod.

[0013] As a further improvement of the present utility model, the lead screw is vertically arranged on the left side of the conveying turntable, both ends of the lead screw are connected to the machine frame through bearing seats, the lower end of the lead screw is connected to a first motor through a gear box, and both ends of the guide rod are fixed to the machine frame.

[0014] As a further improvement of the present utility model, the middle part of the cross beam is fixedly connected to the upper end of the rotating shaft, the rotating shaft is arranged on the machine frame, and the lower end of the rotating shaft is connected to a second motor.

[0015] As a further improvement of the present utility model, a cylinder is connected to the upper part of the hydraulic driving seat, and the cylinder is installed on the upper part of the installation positioning plate.

[0016] As a further improvement of the present utility model, the size of the supporting part is smaller than that of the through part.

[0017] The beneficial effects of the present utility model are as follows:

[0018] In this device, the workpiece is placed on the positioning mechanism and fed while rotating with the conveying turntable. The jacking plate drives the movable bottom plate and the workpiece to move upward along the positioning rods. The hydraulic chuck in the transfer mechanism is used to clamp and position the workpiece in sequence, and then the workpiece is transferred into the induction heating coil for quenching treatment and discharged from the discharging mechanism. The whole device uses a mechanical structure to replace manual operation, automatically completing the processes of workpiece feeding, transfer, quenching and discharging. The positioning is accurate, the degree of automation is high, and the working efficiency is high; the distance between the positioning rods in the positioning mechanism is adjustable, which is suitable for positioning workpieces of different sizes, and has strong practicability. Description of the Drawings

[0019] Figure 1 It is the front view of a high-frequency heat treatment device of the present utility model;

[0020] Figure 2 It is the top view of a high-frequency heat treatment device of the present utility model;

[0021] Figure 3 It is a schematic structural diagram of the conveying turntable 2;

[0022] Figure 4 It is a schematic structural diagram of the movable bottom plate 34;

[0023] Figure 5 It is a schematic structural diagram of the jacking plate 5;

[0024] Figure 6 It is a cross-sectional view of the workpiece 4.

[0025] In the figure: 1, cam divider; 2, conveying turntable; 21, arc base; 22, hollow part; 3, positioning mechanism; 31, positioning block; 32, positioning rod; 33, limiting rod; 34, movable bottom plate; 341, waist-shaped slot; 342, limiting hole; 343, convex edge; 4, workpiece; 41, center hole; 5, jacking plate; 51, groove; 511, supporting part; 6, lead screw; 7, guide rod; 8, frame; 9, gear box; 10, first motor; 11, rotating shaft; 12, cross beam; 13, installation and positioning plate; 14, cylinder; 15, guide rail; 16, hydraulic drive seat; 17, hydraulic chuck; 171, expansion head; 18, second motor; 19, induction heating coil; 20, discharging mechanism; 201, material box; 202, lifting belt. Specific embodiments

[0026] As Figure 1 shown, a high-frequency heat treatment device of the present utility model includes a conveying turntable 2. The middle of the conveying turntable 2 is connected to a cam divider 1. The conveying turntable 2 is integrally in a petal-shaped structure. Arc bases 21 are evenly machined near the circumference of the conveying turntable 2. A hollow part 22 is formed between adjacent arc bases 21 (see Figure 3 ), and a positioning mechanism 3 is installed on the arc base 21. The positioning mechanism 3 includes positioning blocks 31. The positioning blocks 31 are symmetrically distributed about the center (see Figure 3 ). One end of the positioning block 31 is connected to the arc base 21 by bolts. A positioning rod 32 is fixedly provided at the other end of the positioning block 31. A movable bottom plate 34 is sleeved on the positioning rod 32. Waist-shaped slots 341 corresponding to the positioning rods 32 one by one are machined on the movable bottom plate 34 (see Figure 4 ). The positioning rod 32 is fitted through the waist-shaped slot 341. A limiting rod 33 is provided at the center of the arc base 21. A limiting hole 342 corresponding to the limiting rod 33 is machined at the center of the movable bottom plate 34. The positioning rod 32 and the movable bottom plate 34 jointly enclose a containing space for the workpiece 4 (see Figure 2 ). The structure of the workpiece 4 is as Figure 6 shown. A center hole 41 is provided at the center of the workpiece 4. Convex edges 343 extending radially are formed at both side edges of the movable bottom plate 34 and extend beyond the edge of the arc base 21;

[0027] Lifting plate 5 is arranged below the left part of the conveying turntable 2. A groove 51 is machined on the side of the lifting plate 5 facing the conveying turntable 2. The groove 51 matches the outer shape of the arc base 21. Support parts 511 are formed on the front and rear sides of the groove 51 (see Figure 5 ). The support parts 511 are arranged corresponding to the convex edges 343. The size of the support parts 511 is smaller than that of the through hole part 22. The middle part of the lifting plate 5 is threadedly connected with the lead screw 6. The left part of the lifting plate 5 is slidably connected with the guide rod 7. The lead screw 6 is vertically arranged on the left side of the conveying turntable 2. Both ends of the lead screw 6 are connected to the machine frame 8 through bearing seats. The lower end of the lead screw 6 is connected to the first motor 10 through a gearbox 9. Both ends of the guide rod 7 are fixed to the machine frame 8;

[0028] Transfer mechanism is arranged above the left part of the conveying turntable 2. The transfer mechanism includes a cross beam 12. The cross beam 12 is rotatably arranged on the upper part of the machine frame 8. The middle part of the cross beam 12 is fixedly connected to the upper end of the rotating shaft 11. The rotating shaft 11 is arranged on the machine frame 8. The lower end of the rotating shaft 11 is connected to the second motor 18. Mounting and positioning plates 13 are symmetrically arranged at both ends of the cross beam 12. The hydraulic driving seat 16 is slidably connected with the mounting and positioning plates 13 through guide rails 15. A cylinder 14 is connected to the upper part of the hydraulic driving seat 16. The cylinder 14 is installed on the upper part of the mounting and positioning plate 13. A hydraulic chuck 17 is arranged at the lower part of the hydraulic driving seat 16. An expansion head 171 is arranged on the hydraulic chuck 17;

[0029] Discharging mechanism 20 is arranged below the left part of the cross beam 12. The discharging mechanism 20 includes a material box 201 with cooling water. A lifting belt 202 is arranged in the material box 201;

[0030] The induction heating coil 19 is arranged above the discharging mechanism 20. The induction heating coil 19 is connected to a high-frequency heating machine.

[0031] In this device, the workpiece is placed on the positioning mechanism and fed while rotating with the conveying turntable. The lifting plate drives the movable bottom plate and the workpiece to move upward along the positioning rod. The hydraulic chuck in the transfer mechanism is used to clamp and position the workpiece in sequence, and then the workpiece is transferred into the induction heating coil for quenching treatment and discharged from the discharging mechanism. The whole device uses a mechanical structure to replace manual operation, automatically completing the processes of workpiece feeding, transfer, quenching and discharging. The positioning is accurate, the automation degree is high, and the working efficiency is high; the distance between the positioning rods in the positioning mechanism is adjustable, which is suitable for positioning workpieces of different sizes, and has strong practicability.

[0032] During specific use, for the convenience of understanding the present invention, it is described in combination with the attached drawings:

[0033] During operation, first adjust the size of the positioning rod according to the outer diameter of the workpiece. Loosen the bolt between the positioning block and the arc base, rotate the movable base plate, and the positioning rod can slide along the waist-shaped groove on the movable base plate. After adjustment, lock the bolt. Stack the workpieces in the middle of the movable base plate, and the positioning rod abuts against the outer peripheral surface of the workpiece to form radial limitation. Each time the power shaft of the cam divider rotates one circle, the arc base on the conveying turntable rotates one station. When the arc base with the workpiece rotates to the left side of the conveying turntable, the air cylinder drives the hydraulic driving seat to move downwards. The expansion head at the lower part of the hydraulic chuck extends into the central hole of the uppermost workpiece and then tightens and positions the workpiece. Subsequently, the hydraulic driving seat moves up as a whole to reset. At the same time, the hydraulic driving seat on the other side of the cross beam moves downwards, and the hydraulic chuck drives the workpiece to move down into the induction heating coil and pause for a predetermined time. Then, the expansion head on the hydraulic chuck retracts and releases the workpiece, and the hydraulic driving seat moves up to reset. The workpiece freely falls into the material box and is cooled by cooling water, and then exits through the lifting belt. After the hydraulic driving seats on both sides of the cross beam move up and reset, the cross beam rotates 180°, and the hydraulic driving seats on both sides exchange positions to perform the next workpiece clamping and positioning process. Each time the hydraulic chuck takes away a workpiece, the jacking plate pushes the movable base plate and the workpiece as a whole to rise by a certain distance. The height that the movable base plate rises each time matches the thickness of the workpiece. The specific rising process is as follows: The first motor drives the lead screw to rotate through the gearbox. The rotational motion of the lead screw is converted into the linear motion of the jacking plate. The jacking plate moves up along the guide rod. The supporting part of the jacking plate passes through the through holes on the front and rear sides of the arc base and contacts the convex edge of the movable base plate. As the jacking plate continues to move downwards, the supporting part forms an upward jacking force on the convex edge, driving the movable base plate and the workpiece to rise along the positioning rod. When all the workpieces on the movable base plate are transferred, the jacking plate moves down and resets below the arc base. The conveying turntable rotates one process, and the jacking plate continues to jack and feed the movable base plate and the workpiece on the next arc base.

[0034] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high frequency heat treatment device, characterized in that: include: A conveying turntable (2), wherein the middle part of the conveying turntable (2) is connected to a cam divider (1), the conveying turntable (2) is in a petal-shaped structure as a whole, the conveying turntable (2) is uniformly processed with an arc base (21) near the circumference, and a hollow portion (22) is formed between adjacent arc bases (21), a positioning mechanism (3) is installed on the arc base (21), the positioning mechanism (3) comprises a positioning block (31), the positioning block (31) is centrally symmetrically distributed, one end of the positioning block (31) is connected to the arc base (21) by a bolt, the other end of the positioning block (31) is fixedly provided with a positioning rod (32), the positioning rod (32) is sleeved with a movable bottom plate (34), the positioning rod (32) and the movable bottom plate (34) together enclose a accommodating space for a workpiece (4), and the edges of both sides of the movable bottom plate (34) extend radially to form a convex edge (343) and exceed the edge of the arc base (21); A lifting plate (5), the lifting plate (5) being arranged below the left portion of the conveying turntable (2), the lifting plate (5) being processed with a groove (51) on one side of the lifting plate (5) facing the conveying turntable (2), the groove (51) matching the shape of the arc base (21), the front and rear sides of the groove (51) forming a support portion (511), the support portion (511) being arranged corresponding to the convex edge (343); A transfer mechanism, the transfer mechanism is arranged above the left part of the conveying turntable (2), the transfer mechanism comprises a crossbeam (12), the crossbeam (12) is rotatably arranged on the upper part of the frame (8), the two ends of the crossbeam (12) are symmetrically provided with mounting positioning plates (13), a hydraulic drive seat (16) is slidably connected to the mounting positioning plates (13) through a guide rail (15), a hydraulic chuck (17) is arranged at the lower part of the hydraulic drive seat (16), and an expansion head (171) is arranged on the hydraulic chuck (17); A discharging mechanism (20), the discharging mechanism (20) being arranged below the left portion of the cross beam (12), the discharging mechanism (20) comprising a material box (201) with cooling water, a lifting belt (202) being arranged inside the material box (201); An induction heating coil (19), wherein the induction heating coil (19) is disposed above the discharging mechanism (20), and the induction heating coil (19) is connected to a high-frequency heating machine.

2. A high frequency heat treatment device according to claim 1, characterized in that: The movable bottom plate (34) is machined with a waist-shaped groove (341) corresponding to the positioning rod (32) in a one-to-one manner, and the positioning rod (32) cooperates to pass through the waist-shaped groove (341).

3. A high frequency heat treatment device according to claim 1, characterized in that: A limiting rod (33) is provided at the center of the arc base (21), and a limiting hole (342) is processed at the center of the movable bottom plate (34) to correspond to the limiting rod (33).

4. A high frequency heat treatment device according to claim 1, characterized in that: The middle part of the lifting plate (5) is threadedly connected to the screw rod (6), and the left part of the lifting plate (5) is slidably connected to the guide rod (7).

5. A high frequency heat treatment device according to claim 4, characterized in that: The screw rod (6) is vertically arranged on the left side of the conveying turntable (2), the two ends of the screw rod (6) are connected to the frame (8) through bearing seats, the lower end of the screw rod (6) is connected to the first motor (10) through a gear box (9), and the two ends of the guide rod (7) are fixed to the frame (8).

6. A high frequency heat treatment device according to claim 1, characterized in that: The middle portion of the crossbeam (12) is connected and fixed to the upper end of the rotating shaft (11); the rotating shaft (11) is arranged on the frame (8); and the lower end of the rotating shaft (11) is connected to a second motor (18).

7. A high frequency heat treatment device according to claim 1, characterized in that: The upper part of the hydraulic drive seat (16) is connected to the cylinder (14), and the cylinder (14) is installed on the upper part of the installation positioning plate (13).

8. A high frequency heat treatment device according to claim 1, characterized in that: The supporting portion (511) is smaller in size than the hollow portion (22).

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