Vacuum heat treatment equipment for die steel

Abstract

The utility model discloses a die steel vacuum heat treatment equipment belongs to heat treatment equipment technical field. The equipment includes heating jar, jar cover and drive block. The inside of heating jar is equipped with clamping mechanism, and the inside of jar cover is equipped with locking mechanism, and clamping mechanism includes the stage of taking out with pull rod, and stage of taking out can slide into and slide out heating jar, and be equipped with clamp, connecting block, pivot, rotary plate and return spring on stage of taking out, and return spring is used for driving clamp automatic clamping steel material. Locking mechanism includes rotary disc, recess, rotating block, connecting column, limit board, limit slot and knob, and rotates knob and drives rotary disc, and rotary disc drives limit board transverse sliding through connecting column and recess, and makes limit board and realizes locking to be locked into the limit slot of heating jar. The utility model solves the problem of inconvenient and locking complicated, has the beneficial effect of convenient operation, clamping reliable, locking fast firm.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment equipment technology, and in particular to a vacuum heat treatment equipment for mold steel. Background Technology

[0002] Vacuum heat treatment of mold steel is a key process in modern mold manufacturing, directly affecting the mold's hardness, wear resistance, and service life. The process typically involves placing the mold steel in a sealed heating tank (or vacuum furnace), drawing a vacuum, and then subjecting it to programmed heating and cooling.

[0003] In existing technologies, loading and unloading steel typically relies on placing the workpiece on a tray and then feeding the tray into a heating tank. For irregularly shaped mold steel or steel requiring specific orientations, clamps are also needed for fixation. However, existing loading and clamping structures are often inconvenient to operate, requiring workers to perform numerous auxiliary actions during loading and unloading, thus reducing work efficiency.

[0004] More importantly, vacuum heat treatment equipment places extremely high demands on the sealing of the heating tank. The tank lid and body must be reliably locked together to withstand the enormous internal and external pressure differences generated during vacuuming. Currently, many devices use flanges and bolts for locking. While this method is robust, it is extremely cumbersome, requiring operators to tighten or loosen numerous bolts individually, which is time-consuming and labor-intensive, severely impacting production efficiency. If the locking operation is inadequate or the force is uneven, seal failure can easily occur under subsequent high-temperature or vacuum conditions, leading to heat treatment process failure.

[0005] Therefore, existing vacuum heat treatment equipment for mold steel has structural defects in terms of the convenience of loading and unloading steel and the quick and reliable locking of the can lid, resulting in cumbersome overall operation and affecting the efficiency and stability of heat treatment.

[0006] Therefore, this utility model proposes a vacuum heat treatment device for mold steel to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems of inconvenient steel loading and unloading operations and cumbersome locking operation and low sealing reliability of the heating tank lid in the existing vacuum heat treatment equipment for mold steel, this utility model aims to provide a mold steel vacuum heat treatment equipment with improved structure that can effectively solve the above problems.

[0008] This utility model provides a vacuum heat treatment device for mold steel, including: a base, a support block disposed on the base, a heating tank supported and fixed by the support block, a tank cover on the opening side of the heating tank, a clamping mechanism disposed inside the heating tank, a locking mechanism disposed inside the tank cover, a driving block disposed outside the heating tank, and the tank cover is also provided with an air extraction interface for connecting an external vacuum device.

[0009] The clamping mechanism includes a drive assembly, a rotating plate, a return spring, a connecting block, a rotating shaft, and a clamp.

[0010] Preferably, the drive assembly includes a pull rod and a platform. The platform is slidably fitted onto a guide rail at the bottom of the inner cavity of the heating tank, and the pull rod extends through the side wall of the heating tank to the outside. The clamp is rotatably connected to the platform via a connecting block around a pivot. The rotating plate is fixedly connected to the bottom of the connecting block, and the return spring is disposed between the connecting block and the rotating plate. When the clamp is opened under tension, the connecting block drives the rotating plate to compress the return spring. After the tension is released, the return spring rebounds and pushes the rotating plate and the connecting block, causing the clamp to hold the steel material.

[0011] Preferably, the locking mechanism includes a rotating disk, a groove, a rotating block, a connecting post, a limiting plate, a limiting groove, and a knob. The knob is located on the outer surface of the can lid. The rotating block is fixedly connected inside the rotating disk, and the knob drives the rotating block to rotate, thereby driving the rotating disk to rotate. The limiting plate is slidably connected inside the rotating disk, and the connecting post is fixedly connected inside the limiting plate. The connecting post slidably engages with the groove inside the rotating disk. When the rotating disk rotates, the engagement of the connecting post and the groove drives the limiting plate to slide laterally, allowing the limiting plate to engage with the limiting groove inside the heating tank for locking.

[0012] Preferably, the clamp rotates around the pivot via a connecting block, and the pivot is rotatably connected inside the connecting block, providing a stable center of rotation for the clamping action.

[0013] Preferably, the rotating plate and the connecting block are rotatably connected on the rotating shaft, and the return spring is sleeved on the left side of the rotating plate to be squeezed when the clamp is opened by tension, and to provide a rebound force to drive the clamp to clamp after the tension is released.

[0014] Preferably, the pull rod and the platform are connected as a rigid whole by welding or bolting, ensuring that the platform can slide smoothly in and out of the heating tank when the operator manually drives the pull rod.

[0015] Preferably, the groove provided in the rotating disk is an arc-shaped or irregular groove structure. The structural design ensures that when the connecting column slides inside the groove, it can accurately drive the limiting plate to make stable lateral sliding within the rotating disk.

[0016] Preferably, when locking, at least one side of the limiting plate is engaged with the limiting groove opened on the inner wall of the heating tank. The limiting groove is evenly distributed along the circumference of the heating tank to ensure that the tank cover is subjected to uniform force and is locked firmly.

[0017] Preferably, the drive block is a pneumatic cylinder or a hydraulic cylinder. The drive block is installed outside the heating tank and applies pressure to the tank cover along the axial direction of the heating tank. This is used to pre-tighten the tank cover before the locking mechanism locks it, thereby improving the initial sealing effect.

[0018] Preferably, a vacuum sealing ring is provided between the contact surface of the can lid and the heating can, which is pressed together by the driving block and the locking mechanism to ensure the establishment of a vacuum environment.

[0019] Preferably, the inner wall or bottom of the heating tank is provided with a heating element for heat treatment, which is used to heat the mold steel inside the heating tank.

[0020] This utility model has the following beneficial effects:

[0021] 1. This utility model, by setting up a drive assembly consisting of a pull rod and a loading platform, enables workers to manually drive the loading platform to slide in and out of the heating tank, solving the problem of inconvenient steel loading and unloading operations in the prior art, and achieving the technical effect of convenient and efficient steel feeding and discharging.

[0022] 2. This utility model, by setting up a clamping mechanism composed of a clamp, a connecting block, a rotating shaft and a return spring, utilizes the elastic deformation of the spring to achieve automatic clamping of the clamp, which solves the problems of unstable steel material fixation and cumbersome operation in the prior art, and achieves the technical effect of ensuring that the steel material is firmly clamped during the heat treatment process and improving the workpiece fixation reliability.

[0023] 3. This utility model, by setting a locking mechanism composed of a knob, a rotating block, a rotating disk, a groove, a connecting column, a limiting plate, and a limiting groove, uses the rotation of the knob to drive the limiting plate to slide laterally and lock into the limiting groove of the heating tank. This solves the problem of insufficient and unreliable sealing and locking of the heating tank cover in the prior art, and achieves the technical effect of deep and rapid locking between the tank cover and the tank body, ensuring the sealing of the heat treatment process.

[0024] 4. This utility model solves the problem of insufficient initial sealing of the can lid in the prior art by setting a driving block on the outside of the heating tank to press the can lid tightly, and achieves the technical effect of assisting the vacuum sealing ring to achieve effective sealing and further improving the overall sealing performance.

[0025] 5. This utility model solves the problem of functional deficiencies and difficulty in achieving the core "vacuum heat treatment" in the prior art by setting an air extraction interface for connecting an external vacuum device on the can lid and setting a heating element inside the heating can, thus achieving the technical effect of ensuring that the equipment has vacuum extraction and heating functions and realizing vacuum heat treatment of mold steel. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a vacuum heat treatment device for mold steel proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the display panel of a vacuum heat treatment equipment for mold steel proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of a cultural corridor carriage of a vacuum heat treatment equipment for mold steel proposed in this utility model;

[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0030] Legend:

[0031] 1. Base; 2. Support block;

[0032] 3. Clamping mechanism; 31. Heating tank; 33. Rotating plate; 34. Return spring; 35. Connecting block; 36. Rotating shaft; 37. Fixture;

[0033] 32. Drive assembly; 321. Tie rod; 322. Stage;

[0034] 4. Locking mechanism; 41. Can lid; 42. Rotating disc; 43. Groove; 44. Rotating block; 45. Connecting column; 46. Limiting plate; 47. Limiting groove; 48. Knob;

[0035] 5. Driver block. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0037] Example:

[0038] Reference Figures 1 to 4 This utility model provides a vacuum heat treatment device for mold steel, which aims to solve the problems of inconvenient loading and unloading of mold steel and unreliable sealing and locking of heating tank 31 in the prior art.

[0039] The vacuum heat treatment equipment for mold steel includes a base 1, a support block 2 fixed on the base 1, a heating tank 31 fixed on the support block 2, and a tank cover 41 on the open side of the heating tank 31. The base 1 serves as the mounting base for the entire device, the support block 2 supports the heating tank 31, the heating tank 31 is used to contain steel for vacuum heat treatment, the tank cover 41 is used to seal the open side of the heating tank 31, the inner wall or bottom of the heating tank 31 is provided with heating elements for heat treatment, and the tank cover 41 is also provided with an air extraction interface for connecting to an external vacuum device.

[0040] The equipment also includes a clamping mechanism 3 installed inside the heating tank 31, a locking mechanism 4 installed inside the tank cover 41, and a driving block 5 installed outside the heating tank 31 on the side corresponding to the tank cover 41. The clamping mechanism 3 is used to clamp and fix the steel inside the heating tank 31, the locking mechanism 4 is used to achieve a firm lock between the tank cover 41 and the heating tank 31, and the driving block 5 presses the tank cover 41 to seal the internal space of the heating tank 31.

[0041] The clamping mechanism 3 includes a drive assembly 32, a rotating plate 33, a return spring 34, a connecting block 35, a rotating shaft 36, and a clamp 37.

[0042] The drive assembly 32 includes a pull rod 321 and a platform 322. The platform 322 is slidably fitted to the bottom guide rail of the inner cavity of the heating tank 31. The pull rod 321 extends through the side wall of the heating tank 31 to the outside. The pull rod 321 and the platform 322 are connected by welding or bolting. The drive assembly 32 is used by the operator to manually drive the platform 322 to slide in and out of the heating tank 31 to realize the feeding and discharging of steel. On the stage 322, the clamp 37 is rotatably connected to the rotating shaft 36 via the connecting block 35. The rotating shaft 36 is rotatably connected inside the connecting block 35. The rotating plate 33 is fixedly connected to the bottom of the connecting block 35. The return spring 34 is sleeved on the left side of the rotating plate 33. This structure allows the connecting block 35 to drive the rotating plate 33 to rotate inward and squeeze the return spring 34 when the clamp 37 is pulled open. After the tension is released, the rebound force of the return spring 34 pushes the rotating plate 33 and the connecting block 35 to rotate in opposite directions, thereby driving the clamp 37 to move towards the center to clamp the steel material, ensuring that the steel material is stably fixed during the heat treatment process.

[0043] In a preferred embodiment, the clamp 37 rotates around the pivot 36 via the connecting block 35. The pivot 36 is rotatably connected inside the connecting block 35. The rotating plate 33 and the connecting block 35 are both rotatably connected on the pivot 36. The return spring 34 is sleeved on the left side of the rotating plate 33 to provide continuous clamping force when clamping steel. The pull rod 321 and the platform 322 are connected by welding or bolting. The operator can drive the platform 322 to slide in and out of the heating tank 31 by operating the pull rod 321. A vacuum sealing ring is also provided between the contact surface between the tank cover 41 and the heating tank 31. The inner wall or bottom of the heating tank 31 is provided with heating elements for heat treatment.

[0044] The groove 43 inside the rotating disk 42 is arc-shaped or irregularly shaped. While the connecting column 45 slides inside the groove 43, the driving limiting plate 46 slides laterally inside the rotating disk 42. When locking, at least one side of the limiting plate 46 is inserted into the limiting groove 47 opened on the inner wall of the heating tank 31. The limiting groove 47 is evenly distributed along the circumference of the heating tank 31 to ensure the uniformity of locking. The driving block 5 is a cylinder or hydraulic cylinder. The driving block 5 presses the tank cover 41 along the axial direction of the heating tank 31 to assist the vacuum sealing ring in achieving a seal.

[0045] The implementation principle of this application embodiment is as follows: This vacuum heat treatment equipment for mold steel consists of a base 1, a heating tank 31 and a support block 2 supporting the heating tank 31. The heating tank 31 is provided with a tank cover 41 on the right side. The air inside the tank is sealed by a drive block 5. The tank cover 41 is provided with a locking mechanism 4 to lock the tank cover 41 with the heating tank 31 and improve the sealing effect. The heating tank 31 is provided with a clamping mechanism 3 to ensure that the steel inside can be heat treated evenly at all angles.

[0046] First, the operator manually drives the pull rod 321 to move the platform 322 connected to the right side of the pull rod 321, causing it to slide out of the heating tank 31. At this time, the clamp 37 is pulled to widen its clamping width, thereby causing the clamp 37 to push the connecting block 35 to rotate around the rotating shaft 36, which in turn causes the rotating plate 33 fixedly connected to the bottom of the connecting block 35 to rotate inward, thereby squeezing the return spring 34. At this time, the steel material to be heated is placed into the clamping range of the clamp 37. Then, the pulling force on the clamp 37 is released, and the squeezed spring pushes the rotating plate 33 to rotate outward, causing the connecting block 35 to rotate around the rotating shaft 36, thereby pushing the clamp 37 to move towards the center and clamp the steel material. The platform 322 is slid in and out of the heating tank 31 through the drive assembly 32 to realize the feeding and discharging of steel material.

[0047] Secondly, the can lid 41 is equipped with a locking mechanism 4 to achieve a deep seal inside the heating tank 31, thereby improving the heat treatment efficiency of the steel. When the operator turns the knob 48, it drives the rotating block 44 to rotate. The rotating block 44 is fixedly connected inside the rotating disk 42. The rotation of the rotating block 44 drives the rotating disk 42 to rotate. The rotating disk 42 is provided with a groove 43. The limiting plate 46 is slidably connected inside the rotating disk 42. A connecting post 45 is fixedly connected inside the limiting plate 46. When the rotating disk 42 rotates, the connecting post 45 slides inside the groove 43. The sliding of the connecting post 45 drives the limiting plate 46 to slide laterally inside the rotating disk 42, so that it can be locked into the limiting groove 47 opened inside the heating tank 31, thereby achieving the locking between the can lid 41 and the heating tank 31, and thus achieving the sealing of the inside of the heating tank 31.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vacuum heat treatment device for mold steel, comprising: A base (1), a support block (2) is provided on the base (1), the support block (2) supports and fixes a heating tank (31), and the opening side of the heating tank (31) is provided with a can lid (41); The heating tank (31) is provided with a clamping mechanism (3) inside, the can lid (41) is provided with a locking mechanism (4) inside, and the heating tank (31) is provided with a driving block (5) on the side corresponding to the can lid (41) on the outside. The driving block (5) presses the can lid (41) to seal the internal space of the heating tank (31). The can lid (41) is also provided with an air extraction interface for connecting an external vacuum device. The clamping mechanism (3) is characterized in that it comprises: a drive assembly (32), a rotating plate (33), a return spring (34), a connecting block (35), a rotating shaft (36), and a clamp (37); The clamp (37) is rotatably connected around the rotating shaft (36) via the connecting block (35), and the reset spring (34) is disposed between the connecting block (35) and the rotating plate (33), and the rotating plate (33) is fixedly connected to the bottom of the connecting block (35).

2. The vacuum heat treatment equipment for mold steel according to claim 1, characterized in that, The drive assembly (32) includes a pull rod (321) and a platform (322). The platform (322) extends to the outside through the side wall of the heating tank (31) via the pull rod (321). The platform (322) is slidably fitted to the bottom guide rail of the inner cavity of the heating tank (31).

3. The vacuum heat treatment equipment for mold steel according to claim 1, characterized in that, The locking mechanism (4) includes: a rotating disk (42), a groove (43), a rotating block (44), a connecting column (45), a limiting plate (46), a limiting groove (47), and a knob (48); The knob (48) is disposed on the outer surface of the can lid (41), and the rotating block (44) is fixedly connected to the inside of the rotating disk (42). The knob (48) drives the rotating block (44) to rotate, thereby driving the rotating disk (42) to rotate. The limiting plate (46) is slidably connected inside the rotating disk (42), and the connecting column (45) is fixedly connected inside the limiting plate (46). The connecting column (45) is slidably engaged with the groove (43) inside the rotating disk (42) to drive the limiting plate (46) to slide laterally when the rotating disk (42) rotates, so that the limiting plate (46) can be engaged with the limiting groove (47) opened inside the heating tank (31), thereby achieving the locking between the tank cover (41) and the heating tank (31).

4. The vacuum heat treatment equipment for mold steel according to claim 1, characterized in that, The clamp (37) rotates around the pivot (36) via the connecting block (35), the pivot (36) being rotatably connected inside the connecting block (35).

5. The vacuum heat treatment equipment for mold steel according to claim 1, characterized in that, The rotating plate (33) and the connecting block (35) are rotatably connected on the rotating shaft (36), and the reset spring (34) is sleeved on the left side of the rotating plate (33) to provide a continuous clamping force when clamping steel.

6. The vacuum heat treatment equipment for mold steel according to claim 2, characterized in that, The pull rod (321) and the platform (322) are connected by welding or bolting, so that the operator can manually drive the platform (322) to slide in and out of the heating tank (31) to realize the feeding and discharging of steel.

7. The vacuum heat treatment equipment for mold steel according to claim 3, characterized in that, The groove (43) provided in the rotating disk (42) is an arc-shaped or irregular groove structure. While the connecting column (45) slides inside the groove (43), it drives the limiting plate (46) to slide laterally inside the rotating disk (42).

8. The vacuum heat treatment equipment for mold steel according to claim 3, characterized in that, When locking, at least one side of the limiting plate (46) is engaged in the limiting groove (47) opened on the inner wall of the heating tank (31), and the limiting groove (47) is evenly distributed along the circumference of the heating tank (31).

9. The vacuum heat treatment equipment for mold steel according to claim 1, characterized in that, The drive block (5) is a cylinder or a hydraulic cylinder. The drive block (5) presses the can cover (41) along the axial direction of the heating tank (31) to further improve the sealing between the can cover (41) and the heating tank (31).

10. The vacuum heat treatment equipment for mold steel according to claim 1, characterized in that, A vacuum sealing ring is provided between the contact surface of the can lid (41) and the heating can (31), and a heating element for heat treatment is provided on the inner wall or bottom of the heating can (31).

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