Spring heat treatment device

Abstract

The utility model relates to a spring heat treatment device which comprises a heat treatment furnace, a baffle plate and a storage box, a transverse through channel is arranged in the middle of the heat treatment furnace, a platform is arranged at the lower end of the channel, a transverse guide groove is arranged on the platform, a guide rail is arranged at the bottom of the storage box, the guide rail is in sliding connection with the guide groove, and notches are arranged on two transverse sides of the upper end of the heat treatment furnace. The baffle is slidably connected into the notch and can abut against the platform downwards. The springs are loaded in the storage box, can be tidily spread and placed in order, and cannot roll down or remain in the heat treatment furnace, so that the springs are prevented from being clamped in the heat treatment furnace to influence normal feeding of the storage box; the connection of the guide groove and the guide rail provides feeding and discharging guide for the storage box, so that feeding and discharging of the heat treatment furnace are smoother, and the storage box is prevented from being clamped in the heat treatment furnace; the baffle can close the inlet and outlet of the heat treatment furnace, heat loss is avoided, hearth temperature is kept stable, heat treatment time is saved, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment, in particular to a spring heat treatment device. Background Art

[0002] In the processing of hot-formed spring steel, the steel needs to be cooled to 100-150 degrees Celsius after quenching, and then heated to 400-550 degrees Celsius for medium-temperature tempering to eliminate the processing stress when the steel wire is rolled into a spring. This treatment not only ensures the elasticity of the spring, but also improves its toughness and damage resistance. When heat treating springs, a continuous electric furnace is usually used. The springs are continuously pushed in from the loading door and continuously unloaded from the discharge door after passing through the furnace. The commonly used method of conveying in the furnace is to place the workpiece on a heat-resistant steel guide rail and move it with a step-by-step moving beam or push rod. In this way, the tempering temperature of the spring in the furnace is unstable and the time is difficult to control. This can easily lead to insufficient tempering time, resulting in excessive hardness and insufficient stress relief. The springs are also prone to getting stuck in the furnace, causing material loading and unloading to be blocked, affecting the continuous heat treatment. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a spring heat treatment device, which loads and feeds springs through a storage box and keeps the temperature in the furnace stable through a baffle.

[0004] The technical solution of the utility model is: a spring heat treatment device, including a heat treatment furnace, a baffle and a storage box, a horizontal channel running through the middle of the heat treatment furnace, a platform at the lower end of the channel, a horizontal guide groove on the platform, a guide rail at the bottom of the storage box, the guide rail and the guide groove are slidably connected, notches are provided on both sides of the horizontal side of the upper end of the heat treatment furnace, the baffle is slidably connected in the notch, and the baffle can abut the platform downward.

[0005] Furthermore, the upper end of the interior of the storage box is provided with a plurality of protruding transverse stripes.

[0006] Furthermore, bell mouths are provided at both ends of the guide groove.

[0007] Furthermore, a handle is provided on the upper end of the baffle.

[0008] Furthermore, a protrusion is provided at the lower end of the baffle, and the protrusion can be embedded in the guide groove.

[0009] Furthermore, the storage box is provided with triangular plates at both transverse ends, and a slope is provided at the lower end of the protrusion. The triangular plates can be slidably connected to the slope and support the baffle.

[0010] Furthermore, the storage box has a pair of triangular plates at the same end, and the triangular plates are connected by a connecting plate.

[0011] Compared with the existing technology, the advantages of the present invention are: the springs loaded into the storage box can be neatly spread out and placed in order, and will not roll down or remain in the heat treatment furnace, thus preventing the springs from getting stuck in the heat treatment furnace and affecting the normal feeding of the storage box; the connection between the guide groove and the guide rail provides a feed in and out guide for the storage box, making the feed in and out of the heat treatment furnace smoother, thus preventing the storage box from getting stuck in the heat treatment furnace; the baffle can close the inlet and outlet of the heat treatment furnace, thus preventing heat loss and keeping the furnace temperature stable, which is beneficial to saving heat treatment time and energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is an exploded view of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the heat treatment furnace of the utility model;

[0015] Figure 3 This is a structural diagram of the storage box of the utility model;

[0016] Figure 4 This is a structural diagram of the baffle of the utility model.

[0017] Among them: 1. Heat treatment furnace; 2. Notch; 3. Channel; 4. Platform; 5. Guide groove; 6. Bell mouth; 7. Baffle; 8. Bump; 9. Handle; 10. Storage box; 11. Guide rail; 12. Triangle plate; 13. Connecting plate; 14. Horizontal stripes. DETAILED DESCRIPTION

[0018] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0019] like Figure 1-4As shown, a spring heat treatment device includes a heat treatment furnace 1, a baffle 7 and a storage box 10. The middle of the heat treatment furnace 1 is provided with a transverse channel 3, the lower end of the channel 3 is a platform 4, the platform 4 is provided with a transverse guide groove 5, the bottom of the storage box 10 is provided with a guide rail 11, the guide rail 11 is slidably connected to the guide groove 5, the transverse sides of the upper end of the heat treatment furnace 1 are provided with notches 2, the baffle 7 is slidably connected to the notch 2, and the baffle 7 can downwardly abut the platform 4; the heat treatment furnace 1 used in this scheme is a continuous electric furnace. After the workpiece is loaded, it is continuously fed in from the charging door and unloaded from the discharge door after heat treatment in the furnace. The continuous electric furnace is a type of heat treatment furnace 1, which is an existing technology and will not be described in detail; the spring is loaded into the storage box 10, and can be spread out neatly and placed in order, and will not roll down or remain in the heat treatment furnace 1, to avoid the spring getting stuck in the heat treatment furnace 1 and affecting the normal feeding of the storage box 10; the connection between the guide groove 5 and the guide rail 11 provides a feed and discharge guide for the storage box 10, making the feed in and out of the heat treatment furnace 1 smoother, and avoiding the storage box getting stuck in the heat treatment furnace 1; the baffle 7 can close the inlet and outlet of the heat treatment furnace 1, to avoid heat loss, and to keep the furnace temperature stable, which is conducive to saving heat treatment time and energy.

[0020] In the above embodiment, the upper end of the interior of the storage box 10 is provided with multiple raised transverse stripes 14 to facilitate the collection and organization of springs, ensuring a more orderly arrangement. The guide groove 5 is provided with flared openings 6 at both ends, making it easier for the guide rail 11 to fit into the guide groove 5 and facilitating material loading. The upper end of the baffle 7 is provided with a handle 9, which can be lifted using an insulating tool to facilitate opening the entrance and exit of the channel 3. The lower end of the baffle 7 is provided with a bump 8, which fits into the guide groove 5, improving the sealing of the furnace, further locking in heat and saving energy. The storage box 10 is provided with triangular plates 12 at both ends in the horizontal direction, and the lower end of the protrusion 8 is provided with an inclined surface, and the triangular plates 12 can be slidably connected with the inclined surface and support the baffle 7; the triangular plates 12 and the guide rails 11 at the lower end of the storage box 10 are designed as an integral whole, and the front end of the triangular plates 12 slides in the guide groove 5. When it abuts the inclined surface of the protrusion 8 in the horizontal direction, the protrusion 8 slides along the upper end surface of the triangular plates 12, and the baffle 7 is pushed up, thereby opening the inlet and outlet of the channel 3; after the spring heat treatment is completed, the storage box 10 is about to be pushed out of the heat treatment furnace 1, and at this time the storage box 10 is pushed up. The baffle 7 at the exit of the heat treatment furnace 1 is raised. After the baffle 7 passes over the front end of the storage box 10, the protrusion 8 is embedded in the storage box 10 to prevent the storage box 10 from directly falling out of the heat treatment furnace 1, and to prevent the storage box 10 and the spring from directly falling out of the platform 4 and the equipment, thereby ensuring the safety of the workers. When the storage box 10 is about to fall out of the heat treatment furnace 1, it must be manually confirmed and the baffle 7 at the exit of the heat treatment furnace 1 must be pulled up to ensure the smooth passage of the storage box 10. This design improves safety and avoids accidents in which workers are hit or scalded. There is a pair of triangular plates 12 at the same end of the storage box 10. The triangular plates 12 are connected by a connecting plate 13. The connecting plate 13 provides a hand-grip portion to facilitate the lifting and lowering of the storage box 10 and the entry and exit of the heat treatment furnace 1.

[0021] Description of the working method of this utility model:

[0022] The processed springs to be heat treated are placed in the storage box 10 in order and placed next to the heat treatment furnace 1 for standby use. When the temperature in the furnace reaches between 350-500°C, the springs can be tempered; the guide rail 11 at one end of the storage box 10 is embedded in the guide groove 5, and the storage box 10 is pushed in as a whole and placed on the platform 4. When the storage box 10 reaches the entrance of the heat treatment furnace 1 and continues to move forward, the triangular plate 12 at the front end of the storage box 10 lifts the baffle 7 to open the entrance of the channel 3 of the heat treatment furnace 1, and the storage box 10 continues to slide along the platform 4 into the furnace. When it is about to fully enter the heat treatment furnace 1, the protrusion 8 at the lower end of the baffle 7 will jam the storage box 10. At this time, only a slight push is needed to allow the protrusion 8 to continue to pass over the storage box 10 along the inclined surface, so that the storage box 10 can fully enter the furnace, and the baffle 7 automatically closes the heat treatment furnace 1, and the springs in the furnace begin to be heat treated. When the springs heat-treated in the furnace reach a specified time, a new storage box 10 can be placed and sent into the heat treatment furnace 1. The storage box 10 in the furnace can be pushed out by pushing the end to end to achieve continuous heat treatment operations.

[0023] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spring heat treatment device, comprising a heat treatment furnace, a baffle and a storage box, characterized in that: A transverse channel is provided in the middle of the heat treatment furnace, the lower end of the channel is a platform, a transverse guide groove is provided on the platform, a guide rail is provided at the bottom of the storage box, the guide rail is slidably connected to the guide groove, and notches are provided on both sides of the transverse side of the upper end of the heat treatment furnace, the baffle is slidably connected in the notch, and the baffle can abut the platform downward.

2. The spring heat treatment device according to claim 1, characterized in that: The upper end of the interior of the storage box is provided with a plurality of protruding transverse stripes.

3. The spring heat treatment device according to claim 1, characterized in that: Both ends of the guide groove are provided with bell mouths.

4. The spring heat treatment device according to claim 1, characterized in that: A handle is provided on the upper end of the baffle.

5. The spring heat treatment device according to claim 1, characterized in that: A convex block is provided at the lower end of the baffle, and the convex block can be embedded in the guide groove.

6. The spring heat treatment device according to claim 5, characterized in that: The storage box is provided with triangular plates at both transverse ends, and a slope is provided at the lower end of the protrusion. The triangular plates can be slidably connected with the slope and support the baffle.

7. The spring heat treatment device according to claim 6, characterized in that: There is a pair of triangular plates at the same end of the storage box, and the triangular plates are connected by a connecting plate.

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