A suspension spring colouring apparatus
By using a combination of a main shaft, a secondary shaft, and a flamethrower in the suspension spring coloring device, and combining this with a housing and door panel to form a sealed environment, the problems of uneven temperature on the inside and outside of the spring and the entry of contaminants are solved, thus improving the coloring quality of the suspension spring.
Patent Information
- Application Number
- CN202522130622.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-09
AI Technical Summary
Traditional suspension spring baking devices result in uneven temperatures on the inside and outside of the springs, affecting quality. Furthermore, external contaminants may enter the processing area, reducing product quality.
A baking device for suspension springs was designed. The springs are suspended by a main shaft and a secondary shaft, and a flamethrower is installed on the shaft. Combined with the shell and door panel, a sealed environment is formed to bake the inside and outside of the springs at the same time and prevent contaminants from entering.
This method achieves uniform baking temperature on both the inner and outer sides of the spring, preventing contaminants from entering and improving the quality and consistency of the baking process.
Smart Images

Figure CN224678121U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of spring processing equipment, specifically a browning device for suspension springs. Background Technology
[0002] Suspension springs are one type of spring among many, and their production process requires heat treatment. This process is typically used to adjust the spring's stiffness, toughness, or surface properties. In spring coloring, the springs are usually placed in a heating oven and heat-treated according to the required specifications.
[0003] Traditional baking equipment has a simple structure, placing the springs on an oven rack. Flames are generated at the bottom or around the rack to bake the springs. However, this method has some drawbacks. During baking, the high-temperature area only contacts the outer side of the spring, while the inner side cannot directly contact the high-temperature area. This results in uneven temperatures on the inner and outer sides of the spring, making it impossible to achieve uniform baking and affecting the quality of the baked springs. Furthermore, the exposed processing area during baking allows external contaminants to enter the processing area, which also reduces product quality. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this utility model provides a coloring device for suspension springs, which solves the problems mentioned in the background section.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a coloring device for suspension springs, which performs coloring treatment on the spring body, including a workbench, a cover on the top of the workbench, an opening on the front of the cover, a door panel inside the cover, a vertical main shaft connected to the top of the workbench, and multiple vertical secondary shafts connected to the top of the workbench, which are distributed in a ring around the main shaft.
[0006] The spring body is suspended outside the main shaft, and the secondary shaft ring surrounds the spring body. Multiple flamethrowers are installed on the side of the main shaft and secondary shaft near the spring body.
[0007] Preferably, it also includes two positioning rings for fixing the ends of the springs. The two positioning rings are arranged vertically. A bar is pivotally connected to the top center of the main shaft. The upper positioning ring is connected to the bar. A drive unit is connected to the top of the worktable. The lower positioning ring is connected to the drive unit.
[0008] Preferably, the positioning ring is provided with multiple protrusions arranged in a ring at equal angles, and the multiple protrusions clamp the spring end.
[0009] Preferably, the drive unit includes a gear ring and a gear. The gear ring is slidably fitted on the top of the worktable. The gear ring and the main shaft are arranged in concentric circles. The lower positioning ring is connected to the gear ring. A motor is installed on the top of the worktable. The motor drive shaft is connected to the gear, and the gear meshes with the gear ring.
[0010] Preferably, a vertical shaft is connected to the top of the door panel, the shaft is pivotally connected to the top of the housing, the upper end of the shaft extends above the housing, the shaft and the center of the housing are aligned, and a temperature measuring instrument is installed on the housing.
[0011] This utility model provides a coloring device for suspension springs. It has the following beneficial effects: 1. The coloring device for this suspension spring consists of a worktable, a housing, a door panel, a main shaft, and a secondary shaft. Flamethrowers are installed on the main and secondary shafts. The spring is suspended between the shafts and the secondary shaft, allowing for simultaneous coloring of the inner and outer surfaces of the spring, achieving uniform coloring. This prevents uneven coloring that could lead to inconsistent temperatures across the spring and affect overall quality. The housing and door panel work together to create a sealed coloring environment, preventing contaminants from entering the processing area during the coloring process. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure and operation of this utility model; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This utility model Figure 3 Enlarged view of the structure at point A in the middle.
[0013] In the diagram: 1. Workbench, 2. Housing, 21. Temperature gauge, 3. Door panel, 31. Shaft, 4. Main shaft, 41. Bar, 5. Secondary shaft, 6. Gear ring, 7. Gear, 8. Positioning ring, 81. Protrusion. Detailed Implementation
[0014] This utility model embodiment provides a coloring device for suspension springs, such as... Figure 1-4 As shown, the spring body is subjected to a baking process, including a workbench 1, a cover 2 welded to the top of the workbench 1, an opening on the front of the cover 2, a door panel 3 inside the cover 2, and a vertical spindle 4 welded to the top of the workbench 1.
[0015] Multiple vertical auxiliary shafts 5 are welded to the top of the worktable 1, and these auxiliary shafts 5 are distributed in a ring around the main shaft 4. The main shaft 4 and the housing 2 are arranged concentrically.
[0016] The spring body is suspended outside the main shaft 4, and the auxiliary shaft 5 surrounds the spring body. Multiple flamethrowers are fixedly installed on the main shaft 4 and the auxiliary shaft 5 near the spring body.
[0017] It also includes two positioning rings 8, which are used to fix the ends of the springs. The two positioning rings 8 are arranged vertically. A bar 41 is pivotally connected to the top center of the main shaft 4. The upper positioning ring 8 is welded to the bar 41. A drive unit is fixedly installed on the top of the worktable 1. The lower positioning ring 8 is connected to the drive unit.
[0018] The positioning ring 8 has multiple protrusions 81 welded on at equal angles, which clamp the spring end. During installation, a 2cm iron rod is first welded to the end of the spring body. The iron rod is inserted into the positioning ring 8, and the protrusions 81 clamp the main iron rod, thereby achieving a fixing effect.
[0019] The aforementioned bar 4 is L-shaped, consisting of a longitudinal section and a transverse section. The longitudinal section is inserted into the top of the main shaft 4, and the longitudinal section and the main shaft 4 are on the same axis. The longitudinal section can rotate around the axis. The transverse section is used for welding to the upper positioning ring 8. During installation, the spring is first placed on the outside of the main shaft 4, with the lower end of the spring inserted into the lower positioning ring 8. Then, the upper positioning ring 8 is inserted into the upper end of the spring, and the longitudinal section of the bar 4 is inserted into the top of the main shaft 4. This facilitates the installation and removal of the spring.
[0020] The drive unit includes a gear ring 6 and a gear 7. The gear ring 6 is slidably fitted on the top of the worktable 1. The gear ring 6 and the main shaft 4 are arranged in concentric circles. The lower positioning ring 8 is fixedly installed with the gear ring 6. A motor is installed on the top of the worktable 1. The motor drive shaft is welded to the gear 7, and the gear 7 meshes with the gear ring 6. The drive unit drives the spring body to rotate.
[0021] A vertical shaft 31 is welded to the top of the door panel 3. The shaft 31 is pivotally connected to the top of the housing 2, and its upper end extends above the housing 2. The shaft 31 and the center of the housing 2 are aligned. A thermometer 21 is fixedly installed on the housing 2. Rotating the shaft 31 slides the door panel 3, sealing the opening of the housing 2 and creating a sealed baking environment. The thermometer 21 is used to detect the temperature inside the housing 2 during operation.
[0022] In summary, the coloring device for this suspension spring consists of a worktable 1, a housing 2, a door panel 3, a main shaft 4, and a secondary shaft 5. Flamethrowers are installed on the main shaft 4 and the secondary shaft 5. The spring is suspended between the shaft 4 and the secondary shaft 5, allowing for simultaneous coloring of both the inner and outer sides of the spring, achieving uniform coloring. This avoids uneven coloring that could lead to inconsistent temperatures across the spring and affect the overall quality. The housing 2 and door panel 3 work together to create a sealed coloring environment, preventing contaminants from entering the processing area during the coloring process.
[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A coloring device for suspension springs, used to color the spring body, characterized in that: Includes a workbench (1), the top of the workbench (1) is provided with a shell (2), the front of the shell (2) is provided with a placement opening, the shell (2) is provided with a door panel (3), the top of the workbench (1) is connected to a vertical main shaft (4), the top of the workbench (1) is connected to multiple vertical secondary shafts (5), and the multiple secondary shafts (5) are distributed in a ring around the main shaft (4); The spring body is suspended outside the main shaft (4), and the secondary shaft (5) surrounds the spring body. Multiple flamethrowers are installed on the side of the main shaft (4) and the secondary shaft (5) near the spring body.
2. The coloring device for a suspension spring according to claim 1, characterized in that: It also includes two positioning rings (8), which are used to fix the ends of the springs. The two positioning rings (8) are arranged vertically. A bar (41) is pivotally connected to the top center of the main shaft (4). The upper positioning ring (8) is connected to the bar (41). A drive unit is connected to the top of the worktable (1). The lower positioning ring (8) is connected to the drive unit.
3. The coloring device for a suspension spring according to claim 2, characterized in that: The positioning ring (8) is equipped with multiple protrusions (81) arranged in a ring at equal angles, and the multiple protrusions (81) clamp the spring end.
4. The coloring device for a suspension spring according to claim 3, characterized in that: The drive unit includes a gear ring (6) and a gear (7). The gear ring (6) is slidably fitted on the top of the worktable (1). The gear ring (6) and the main shaft (4) are arranged in concentric circles. The lower positioning ring (8) is connected to the gear ring (6). A motor is installed on the top of the worktable (1). The motor drive shaft is connected to the gear (7). The gear (7) meshes with the gear ring (6).
5. The coloring device for a suspension spring according to claim 4, characterized in that: The top of the door panel (3) is connected to a vertical shaft (31), which is pivotally connected to the top of the cover (2). The upper end of the shaft (31) extends to the top of the cover (2), and the shaft (31) and the center of the cover (2) are aligned. The cover (2) is equipped with a thermometer (21).