Multi-station spring uniform heat treatment device

Abstract

The utility model discloses a multi-station spring uniform heat treatment device, which belongs to the technical field of spring heat treatment, and adopts the technical scheme that the multi-station spring uniform heat treatment device comprises a heat treatment furnace, a bearing plate is rotationally connected in the heat treatment furnace, a plurality of fixing components penetrate through the bearing plate, and a spring main body is sleeved on the surface of each fixing component; a rotating assembly is arranged at the bottom of the bearing plate and used in cooperation with a fixing assembly, rotating shaft structures are connected to the two sides of the bearing plate in a bolted mode, by arranging the fixing assembly, a conventional cylindrical spiral spring and a special-shaped spring (such as a tower-shaped spring) are firmly fixed, meanwhile, the fixing assembly is in close contact with the spring, and the fixing assembly is arranged on the bearing plate. And the device can adapt to stress deformation conditions of springs in different shapes, effectively prevents the springs from shaking and shifting in the heat treatment process, ensures that the springs are kept stable in the rotating process, lays a foundation for uniform heat treatment, and solves the problem that an existing device cannot meet the treatment requirements of the springs in special shapes.

Description

Technical Field

[0001] This utility model relates to the field of spring heat treatment technology, and in particular to a multi-station spring uniform heat treatment device. Background Technology

[0002] Heat treatment is a processing method in which metal materials are heated, held at a certain temperature and then cooled in a certain medium. By changing the metallographic structure of the material surface or interior, the properties of the metal can be controlled and changed. Metal quenching and hardening process is a standard process in spring manufacturing. At present, most springs are formed by cold rolling and then stress-relieving tempering. Currently, the heat treatment of springs generally involves stacking several springs on a column and then placing the column into a heat treatment furnace for heating treatment.

[0003] During the heat treatment process, the springs at different locations on the same column deform to varying degrees, which affects the uniformity of the finished spring performance. In addition, the uneven heating temperature in various directions during the heating process will lead to uneven heating.

[0004] An existing patent (publication number: CN219731002U) discloses a multi-station spring uniform heat treatment device, which has the effect of improving the processing quality of spring heat treatment.

[0005] To address the aforementioned issues, existing patents offer solutions. While these solutions achieve uniform heating of the springs, they are primarily designed for conventional cylindrical helical springs. However, for special shapes (such as tower-shaped springs), they lack the ability to secure the springs, making it difficult to ensure stability during rotation and thus preventing uniform heat treatment. Furthermore, special-shaped springs differ from conventional springs in terms of clamping, rotation, and stress, and existing spring heat treatment devices cannot meet their processing requirements.

[0006] To address this, a multi-station spring uniform heat treatment device is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a multi-station spring uniform heat treatment device that can solve the problems of existing devices that are mainly designed for conventional cylindrical helical springs, but lack the ability to fix special-shaped springs (such as tower-shaped springs), making it difficult to ensure the stability of the spring during rotation and thus unable to achieve uniform heat treatment. Furthermore, special-shaped springs differ from conventional springs in terms of clamping, rotation, and force, and existing spring heat treatment devices cannot meet their processing requirements.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a multi-station spring uniform heat treatment device, comprising a heat treatment furnace, a bearing plate rotatably connected inside the heat treatment furnace, a plurality of fixing components passing through the inside of the bearing plate, a spring body sleeved on the surface of the fixing components, a rotating component provided at the bottom of the bearing plate, and the rotating component cooperating with the fixing components, and a rotating shaft structure bolted to both sides of the bearing plate.

[0009] The fixing assembly includes a hollow rod that penetrates the interior of a support plate and is rotatably connected to the interior of the support plate via a bearing. Positioning plates are provided on both sides of the hollow rod, with the positioning plates in close contact with the spring body. A lead screw is rotatably connected inside the hollow rod, and a threaded sleeve is threaded onto the surface of the lead screw. A fixing sleeve is fitted onto the top of the lead screw surface, and the top of the fixing sleeve is bolted to the inner wall of the hollow rod. Pushing members are rotatably connected to both sides of the fixing sleeve and the threaded sleeve, with the pushing members rotatably connected to the positioning plates on the side closest to them.

[0010] Preferably, the rotating assembly includes an active synchronizing wheel and a driven synchronizing wheel. The active synchronizing wheel has an output shaft running through its interior, and the top of the output shaft is rotatably connected to the support plate. The driven synchronizing wheel is sleeved on the surface of the hollow rod.

[0011] Preferably, a timing belt is wound around the interior of the plurality of driven timing pulleys, and the timing belt meshes with the driving timing pulley.

[0012] Preferably, tensioning pulleys are in contact with both the front and rear sides of the synchronous belt, and an electric cylinder is bolted to the side of the tensioning pulley away from the synchronous drive.

[0013] Preferably, a protective shell is bolted to the bottom of the support plate, and the electric cylinder is bolted to the side of the protective shell near the inner wall of the protective shell.

[0014] Preferably, the pushing member includes a fixed rod, one end of which is rotatably connected to the fixed sleeve and the screw sleeve respectively, and a movable rod is slidably disposed inside the fixed rod, and the side of the movable rod near the positioning plate is rotatably connected to it.

[0015] Preferably, an adjusting spring is provided on the side of the movable rod near the inner wall of the fixed rod, and the adjusting spring is connected to the side of the fixed rod near the inner wall.

[0016] Preferably, a collection trough is provided at the bottom of the interior of the heat treatment furnace, and a door is rotatably provided at the top of the front side of the interior of the heat treatment furnace.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application achieves a firm fixation of conventional cylindrical helical springs and special-shaped springs (such as tower springs) by setting a fixing component. At the same time, it can adapt to the stress and deformation of springs of different shapes by being in close contact with the spring, effectively preventing the spring from shaking or shifting during heat treatment, ensuring the spring remains stable during rotation, laying the foundation for achieving uniform heat treatment, and solving the problem that existing devices cannot meet the processing requirements of special-shaped springs.

[0019] 2. By setting up a rotating component, this application can drive multiple fixed components on the bearing plate and the spring body to rotate synchronously and stably. During the heat treatment process, the spring body can receive heat in all directions and evenly, which effectively reduces the possibility of uneven heating of the spring due to different temperatures in different directions, and improves the quality of spring heat treatment and the uniformity of finished product performance. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the multi-station spring uniform heat treatment device of this utility model;

[0021] Figure 2 This is a schematic diagram showing the connection between the heat treatment furnace and the support plate of this utility model;

[0022] Figure 3 This is a schematic diagram showing the connection between the fixing component and the support plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the fixing component of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the pusher component of this utility model;

[0025] Figure 6 This is a schematic diagram showing the connection between the rotating component and the fixed component of this utility model.

[0026] In the diagram, 1. Heat treatment furnace; 2. Support plate; 3. Fixing assembly; 31. Hollow rod; 32. Positioning plate; 33. Lead screw; 34. Screw sleeve; 35. Fixing sleeve; 36. Pushing component; 361. Fixing rod; 362. Movable rod; 363. Adjusting spring; 4. Spring body; 5. Rotating assembly; 51. Driving synchronous pulley; 52. Driven synchronous pulley; 53. Synchronous belt; 54. Tensioning pulley; 55. Electric cylinder; 6. Protective shell; 7. Collection trough; 8. Box door. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-6 The present invention provides the following technical solution:

[0029] A multi-station spring uniform heat treatment device includes a heat treatment furnace 1, a bearing plate 2 rotatably connected inside the heat treatment furnace 1, a plurality of fixing components 3 passing through the inside of the bearing plate 2, a spring body 4 sleeved on the surface of the fixing components 3, a rotating component 5 provided at the bottom of the bearing plate 2, and the rotating component 5 working in conjunction with the fixing components 3, and a rotating shaft structure bolted to both sides of the bearing plate 2.

[0030] The fixing component 3 includes a hollow rod 31 that penetrates the interior of the bearing plate 2 and is rotatably connected to the interior of the bearing plate 2 via a bearing. Positioning plates 32 are provided on both sides of the hollow rod 31, and the positioning plates 32 are in close contact with the side of the spring body 4. A lead screw 33 is rotatably connected inside the hollow rod 31, and a threaded sleeve 34 is threaded onto the surface of the lead screw 33. A fixing sleeve 35 is fitted onto the top of the surface of the lead screw 33, and the top of the fixing sleeve 35 is bolted to the inner wall of the hollow rod 31. Pushing members 36 are rotatably connected to both sides of the fixing sleeve 35 and the threaded sleeve 34, and the pushing members 36 are rotatably connected to the side of the positioning plate 32.

[0031] In this embodiment: by setting the fixing component 3, the lead screw 33 can be driven to rotate by an external driving device such as a motor. With the threaded engagement between the lead screw 33 and the screw sleeve 34, the screw sleeve 34 can move on the surface of the lead screw 33. Through the rotational connection between the pusher 36 and the screw sleeve 34 and the fixing sleeve 35 respectively, the positioning plate 32 can be driven to move closer to or away from the hollow rod 31, thereby realizing the fixing of conventional cylindrical springs of different specifications. At the same time, the special design of the pusher 36 can also make the positioning plate 32 adapt to springs with special shapes, such as tower springs.

[0032] Specifically, such as Figure 5 As shown, the rotating assembly 5 includes an active synchronizing wheel 51 and a driven synchronizing wheel 52. The active synchronizing wheel 51 has an output shaft running through its interior, and the top of the output shaft is rotatably connected to the bearing plate 2. The driven synchronizing wheel 52 is sleeved on the surface of the hollow rod 31.

[0033] Specifically, such as Figure 5As shown, a timing belt 53 is wound around the interior of several driven timing pulleys 52, and the timing belt 53 meshes with the driving timing pulley 51.

[0034] Specifically, such as Figure 5 As shown, tensioning pulleys 54 are in contact with both the front and rear sides of the synchronous belt 53, and an electric cylinder 55 is bolted to the side of the tensioning pulley 54 away from the moving side of the synchronous belt 53.

[0035] Specifically, such as Figure 5 As shown, a protective shell 6 is bolted to the bottom of the bearing plate 2, and the electric cylinder 55 is bolted to the side of the protective shell 6 near the inner wall of the protective shell 6.

[0036] In this embodiment: by setting the rotating component 5, the output shaft can be driven to rotate by an external drive device, so that the output shaft drives the active synchronous wheel 51 to rotate, and the synchronous belt 53 drives other driven synchronous wheels 52 to rotate, so that multiple fixed components 3 and spring body 4 can rotate during the heat treatment process, thereby achieving uniformity of heat treatment of spring body 4.

[0037] Specifically, such as Figure 4 As shown, the pusher 36 includes a fixed rod 361, one end of which near the fixed sleeve 35 and the screw sleeve 34 is rotatably connected to both. A movable rod 362 is slidably disposed inside the fixed rod 361, and the movable rod 362 is rotatably connected to the side near the positioning plate 32.

[0038] Specifically, such as Figure 4 As shown, an adjusting spring 363 is provided on the side of the movable rod 362 near the inner wall of the fixed rod 361, and the adjusting spring 363 is connected to the side of the fixed rod 361 near the inner wall.

[0039] In this embodiment: by setting the pusher 36, when encountering a special-shaped spring (such as a tower spring), when the positioning plate 32 contacts the special spring, the movable rod 362 slides inside the fixed rod 361, and under the action of the adjusting spring 363, the top and bottom can present different displacement distances, thus causing the positioning plate 32 to deflect at an angle, thereby achieving the fixing effect of the special-shaped spring.

[0040] Specifically, such as Figure 1 , Figure 2 As shown, a collection trough 7 is provided at the bottom of the interior of the heat treatment furnace 1, and a door 8 is rotatably provided at the top of the front side of the interior of the heat treatment furnace 1.

[0041] In this embodiment, the collection slot 7 and the box door 8 facilitate the collection and removal of the springs after heat treatment, improve work efficiency, and also keep the working environment clean.

[0042] Working principle: During the heat treatment of the spring body 4, the spring body 4 is fitted onto the surface of the hollow rod 31. An external drive device, such as a motor, drives the lead screw 33 to rotate. Utilizing the threaded engagement between the lead screw 33 and the threaded sleeve 34, the threaded sleeve 34 moves on the surface of the lead screw 33. Through the rotating connection of the pusher 36 with the threaded sleeve 34 and the fixed sleeve 35 respectively, the positioning plate 32 can be moved closer to or away from the hollow rod 31 until it is in close contact with the spring body 4. When encountering a special-shaped spring (such as a tower-shaped spring), when the positioning plate 32 contacts the special spring, the movable rod 362 slides inside the fixed rod 361. Under the action of the adjusting spring 363, the top and bottom can exhibit different displacement distances, thus causing the positioning plate 32 to deflect at an angle. Therefore, it achieves the adjustment of the special spring. The shape spring is fixed, then the box door 8 is closed, and the external power source is started. The output shaft drives the active synchronous wheel 51 to rotate. The active synchronous wheel 51 drives the driven synchronous wheel 52 to rotate through the synchronous belt 53, thereby making the fixing component 3 and the spring body 4 rotate synchronously. During the rotation, the electric cylinder 55 adjusts the position of the tension wheel 54 as needed to maintain the tension of the synchronous belt 53 and ensure the stability of the rotation process. During the heat treatment of the spring, the spring body 4 receives heat in all directions and evenly along with the fixing component 3. After the heat treatment is completed, the box door 8 is opened again, and the rotating shaft structure is driven to rotate through the external drive device, which can flip the bearing plate 2 and release the fixing component 3 from fixing the spring body 4. Under the action of gravity, the spring body 4 falls into the collection tank 7, completing the heat treatment and collection process of the spring body 4.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 multi-station spring homogenizing heat treatment apparatus comprising a heat treatment furnace (1), characterized in that: The inside of the heat treatment furnace (1) is rotatably connected with a bearing plate (2), a plurality of fixed assemblies (3) are through the inside of the bearing plate (2), spring bodies (4) are sleeved on the surfaces of the fixed assemblies (3), a rotating assembly (5) is arranged at the bottom of the bearing plate (2), and the rotating assembly (5) is used in cooperation with the fixed assemblies (3); rotating shaft structures are bolted on the two sides of the bearing plate (2). The fixed assembly (3) comprises a hollow rod (31) which is through the inside of the bearing plate (2) and is rotatably connected in the inside of the bearing plate (2) through a bearing, positioning plates (32) are arranged on the two sides of the hollow rod (31), one side of the positioning plate (32) close to the spring body (4) is in close contact with the spring body (4), a lead screw (33) is rotatably connected in the inside of the hollow rod (31), a threaded sleeve (34) is threadedly connected on the surface of the lead screw (33), a fixed sleeve (35) is sleeved on the top of the surface of the lead screw (33), the top of the fixed sleeve (35) is bolted with the inner wall of the hollow rod (31), and the two sides of the fixed sleeve (35) and the threaded sleeve (34) are rotatably connected with pushers (36), and one side of the pusher (36) close to the positioning plate (32) is rotatably connected with the positioning plate (32).

2. A multi-station spring uniform heat treatment apparatus according to claim 1, characterized in that: The rotating assembly (5) comprises a driving synchronous wheel (51) and a driven synchronous wheel (52), the inside of the driving synchronous wheel (51) is through an output shaft, and the top of the output shaft is rotatably connected with the bearing plate (2); the driven synchronous wheel (52) is sleeved on the surface of the hollow rod (31).

3. A multi-station spring uniform heat treatment apparatus according to claim 2, characterized in that: Synchronous belts (53) are wound between the insides of the plurality of driven synchronous wheels (52), and the synchronous belts (53) are engaged with the driving synchronous wheel (51).

4. A multi-station spring uniform heat treatment apparatus according to claim 3, wherein: Tensioning wheels (54) are in contact with the two sides of the front side and the rear side of the synchronous belt (53), and the tensioning wheels (54) are bolted with electric cylinders (55) away from one side of the synchronous belt (53).

5. A multi-station spring uniform heat treatment apparatus according to claim 4, wherein: The bottom of the bearing plate (2) is bolted with a protective shell (6), and one side of the electric cylinder (55) close to the inner wall of the protective shell (6) is bolted with the protective shell (6).

6. A multi-station spring uniform heat treatment apparatus as claimed in claim 1, wherein: The pusher (36) comprises a fixed rod (361), one end of the fixed rod (361) close to the fixed sleeve (35) and the threaded sleeve (34) is rotatably connected with the fixed sleeve (35) and the threaded sleeve (34) respectively, a movable rod (362) is slidably arranged in the inside of the fixed rod (361), and one side of the movable rod (362) close to the positioning plate (32) is rotatably connected with the positioning plate (32).

7. A multi-station spring uniform heat treatment apparatus according to claim 6, wherein: An adjusting spring (363) is arranged on one side of the movable rod (362) close to the inner wall of the fixed rod (361), and the adjusting spring (363) is connected with the inner wall of the fixed rod (361) on one side.

8. The apparatus of claim 1, wherein: A collecting groove (7) is arranged at the bottom of the inside of the heat treatment furnace (1), and a box door (8) is rotatably arranged at the top of the front side of the inside of the heat treatment furnace (1).

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