An ultraviolet curing device

Abstract

The purpose of this invention is to provide a UV curing device with high curing strength and efficiency. The device includes a housing with a part mounting base. The housing also houses pre-curing lamps and curing lamps. Multiple curing lamps are spaced apart on the housing around the part mounting base, and each lamp is aligned with the bonding area of ​​the part on the mounting base. First, the pre-curing lamps rapidly pre-cur the bonding area, and then the curing lamps fully cure the pre-cured area. This allows for complete UV coverage of difficult-to-irradiate areas, thereby improving the curing strength and efficiency of the cured parts.

Description

Technical Field

[0001] This utility model relates to the field of manufacturing technology, specifically to an ultraviolet curing device. Background Technology

[0002] UV adhesives (ultraviolet-curing adhesives) are bonding agents that cure rapidly under ultraviolet light. They are widely used in the manufacturing and assembly of plastic parts due to their fast curing speed, high curing strength, and good transparency, making them an ideal choice for bonding, sealing, and protecting plastic parts. The curing depth and speed of UV adhesives are affected by the intensity of the ultraviolet light source and the irradiation time, requiring precise control. If the ultraviolet intensity is too high or the irradiation time is too long, the surface may over-cur (become brittle or crack), while the interior may not cure sufficiently, leading to a decrease in curing strength. Conversely, if the curing conditions are insufficient, uncured components may remain inside the adhesive layer, easily resulting in performance degradation after long-term use. Utility Model Content

[0003] The purpose of this invention is to provide a UV curing device with high curing strength and high curing efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an ultraviolet curing device, including a chassis, a part fixing seat on the chassis, a pre-curing lamp and a curing lamp on the chassis, wherein multiple curing lamps are spaced apart on the chassis around the part fixing seat, and the multiple curing lamps are respectively aligned with the bonding part of the part on the part fixing seat.

[0005] Furthermore, the pre-curing lamp is located on the side of the chassis. The pre-curing lamp includes a pre-ultraviolet lamp and a universal joint. Adjusting the universal joint allows the pre-ultraviolet lamp to rotate to a working position aligned with the part fixing seat and a clearance position away from the part fixing seat.

[0006] Furthermore, the curing lamp includes a connecting rod, and a strip hole is provided on the upper plate of the chassis. The connecting rod passes through the strip hole on the upper plate of the chassis. An ultraviolet lamp is provided at the upper end of the connecting rod, and the lower end is connected to the drive mechanism inside the chassis. The drive mechanism drives the ultraviolet lamp to move along the length of the strip hole to approach or move away from the part fixing seat.

[0007] Furthermore, the upper panel of the chassis is also equipped with a guide seat, and the guide hole core on the guide seat is arranged parallel to the strip hole core. The ultraviolet lamp is placed in the guide hole on the guide seat to form a guiding fit.

[0008] Furthermore, the outer periphery of the component mounting base is equipped with a light shield, and the bottom of the two side plates of the light shield are provided with sliding grooves, which form a sliding fit with the slide rails provided on the upper plate of the chassis.

[0009] Furthermore, the chassis is equipped with a short-circuit protector, a curing lamp power supply module, a pre-curing time control module, and a curing time control module.

[0010] Furthermore, auxiliary docking components are also provided on the top panel of the chassis.

[0011] In the above scheme, the pre-curing lamp quickly pre-cures the bonding position, and multiple curing lamps fully cure the bonding position after pre-curing. This can completely cover the UV light in areas that are difficult to irradiate, thereby improving the curing strength and curing efficiency after curing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the curing device;

[0013] Figure 2 for Figure 1 A schematic diagram of the structure after the sunshade is removed.

[0014] In the diagram: 10-Chassis, 11-Strip hole, 20-Parts mounting base, 30-Pre-curing lamp, 31-Pre-UV lamp, 32-Universal tube, 40-Curing lamp, 41-Connecting rod, 42-UV lamp, 43-Guide seat, 50-Light shield, 60-Auxiliary docking assembly. Detailed Implementation

[0015] like Figure 1 , Figure 2 As shown, an ultraviolet curing device includes a housing 10, on which a part mounting base 20 is disposed. The housing 10 also includes pre-curing lamps 30 and curing lamps 40. Multiple curing lamps 40 are spaced apart on the housing 10 around the part mounting base 20, and each curing lamp 40 is aligned with the bonding area of ​​the part on the part mounting base 20. First, the pre-curing lamps 30 rapidly pre-cur the bonding area, and then the curing lamps 40 fully cure the pre-cured bonding area. This allows for complete coverage of 365nm ultraviolet light in areas that are difficult to irradiate, thereby improving the curing strength and efficiency of the cured parts.

[0016] Since different parts of the same part need to be bonded with UV adhesive, in order to improve curing efficiency, multiple curing lamps 40 are spaced apart on the casing 10 around the part holder 20. Each of the multiple curing lamps 40 is aligned with the bonding area of ​​the part on the part holder 20. This allows different bonding locations on the same part to be cured simultaneously, improving curing efficiency.

[0017] Preferably, the pre-curing lamp 30 is located on the side of the chassis 10. The pre-curing lamp 30 includes a pre-UV lamp 31 and a universal joint 32. Adjusting the universal joint 32 rotates the pre-UV lamp 31 to either the working position aligned with the part holder 20 or the clearance position away from the part holder 20. The direction of the pre-UV lamp 31 can be adjusted by manually turning the universal joint 32, which is simple and convenient.

[0018] As a preferred embodiment of this utility model, the curing lamp 40 includes a connecting rod 41. A strip-shaped hole 11 is provided on the upper plate of the housing 10. The connecting rod 41 passes through the strip-shaped hole 11 on the upper plate of the housing 10. An ultraviolet lamp 42 is provided at the upper end of the connecting rod 41, and the lower end is connected to a drive mechanism inside the housing 10. The drive mechanism drives the ultraviolet lamp 42 to move closer to or away from the part fixing seat 20 along the length direction of the strip-shaped hole 11. By placing the drive mechanism inside the housing 10, it is not affected by external interference, resulting in smoother operation. The length direction of the strip-shaped hole 11 limits the movement direction of the curing lamp 40, ensuring that the curing lamp 40 can only move along the direction defined by the strip-shaped hole 11, thus moving closer to or away from the part fixing seat 20. In actual production, different workpieces and curing requirements require different light intensities. By reasonably adjusting the force between the curing lamp 30 and the part, the appropriate light intensity can be precisely controlled, achieving multiple goals such as uniform curing, controlling depth, reducing damage, and improving energy efficiency.

[0019] To ensure the stability of the curing lamp 40 during movement, a guide seat 43 is provided on the upper panel of the housing 10. The guide hole core on the guide seat 43 is arranged parallel to the core of the strip hole 11. The ultraviolet lamp 42 is placed in the guide hole on the guide seat 43 to form a guiding fit, ensuring that the curing lamp 40 moves stably along the set direction. When the ultraviolet lamp 42 is not moving, the guide seat 43 also acts as a fixing seat, maintaining the certainty of the position of the ultraviolet lamp 42 and ensuring the curing effect.

[0020] A light shield 50 is provided around the outer periphery of the part holder 20. The light shield 50 can block excess light, allowing ultraviolet light to be accurately focused on the target area, improving the accuracy and consistency of curing. Simultaneously, since ultraviolet intensity is usually high, the light shield 50 can block most of the ultraviolet rays, reducing direct exposure to operators and protecting their health. For easy part handling, the bottom of the side plates of the light shield 50 are provided with sliding grooves (not shown in the figure). These grooves engage with the sliding rails on the upper plate of the chassis 10. When a part needs to be clamped onto or removed from the part holder 20, the light shield 50 is moved to a clearance position, and then, after the operation is completed, the light shield 50 is placed back around the outer periphery of the part holder 20. To ensure that the light shield 50 completely covers the part holder 50 and thus blocks the light emitted by multiple ultraviolet lamps 42, the light shield 50 is positioned around the outer periphery of one of the curing lamps 40.

[0021] The chassis 10 is equipped with a short-circuit protector, a curing lamp power supply module, a pre-curing time control module, and a curing time control module. The time control module controls the curing time of the (pre)curing lamp on the UV adhesive applied to the parts to ensure the curing effect.

[0022] Preferably, the upper plate of the chassis 10 is also provided with an auxiliary docking component 60, which is used to assist in alignment and bonding and to prevent adhesive from contaminating the cavity of the parts, thereby improving the product qualification rate.

[0023] The two-step curing method used in this invention has at least the following beneficial effects:

[0024] 1. Process Control and Quality Improvement: During the pre-curing stage, low-intensity or short-duration ultraviolet (UV) irradiation initially cures the UV adhesive surface, forming a thin "solidification layer." This solidification layer effectively restricts adhesive flow, preventing contamination of non-bonding areas due to excessive adhesive diffusion during subsequent operations. After pre-curing, the adhesive position is essentially fixed, allowing for precise curing. Higher intensity and more precise UV irradiation is applied to specific bonding areas, resulting in a uniform and dense cured layer, improving curing strength and durability.

[0025] 2. Production Efficiency and Cost Control: The pre-curing stage rapidly forms a surface solidification layer, reducing the adhesive's flow time in the bonding area and laying the foundation for subsequent precise curing. The precise curing stage then efficiently cures the adhesive based on bonding requirements, avoiding unnecessary overall curing, shortening the overall curing time, and improving production efficiency. The pre-curing stage uses low-intensity ultraviolet irradiation, while the precise curing stage only cures the bonding area, reducing energy consumption and costs.

[0026] 3. Product Performance and Reliability: The two-step curing scheme ensures that the adhesive is fully cured in the correct location, reducing the risk of bonding failure due to adhesive flow or incomplete curing, and improving the overall reliability and service life of the product. The pre-curing stage restricts the flow of adhesive in complex shapes or structures, ensuring that the adhesive forms a bond layer in the correct location, while the precision curing stage efficiently cures complex bonding areas, improving the adaptability and reliability of the bond.

Claims

1. A UV curing apparatus, comprising a housing (10), wherein a part mounting base (20) is disposed on the housing (10), characterized in that: The chassis (10) is also provided with a pre-curing lamp (30) and a curing lamp (40). Multiple curing lamps (40) are spaced apart on the chassis (10) around the part fixing seat (20). The multiple curing lamps (40) are respectively aligned with the bonding part of the part on the part fixing seat (20).

2. The ultraviolet curing device according to claim 1, characterized in that: The pre-curing lamp (30) is located on the side of the chassis (10). The pre-curing lamp (30) includes a pre-ultraviolet lamp (31) and a universal tube (32). Adjusting the universal tube (32) causes the pre-ultraviolet lamp (31) to rotate to the working position aligned with the part fixing seat (20) and the clearance position away from the part fixing seat (20).

3. The ultraviolet curing apparatus according to claim 1, characterized in that: The curing lamp (40) includes a connecting rod (41). A strip hole (11) is provided on the upper plate of the housing (10). The connecting rod (41) passes through the strip hole (11) on the upper plate of the housing (10). An ultraviolet lamp (42) is provided at the upper end of the connecting rod (41), and the lower end is connected to the drive mechanism inside the housing (10). The drive mechanism drives the ultraviolet lamp (42) to move along the length direction of the strip hole (11) to approach or move away from the part fixing seat (20).

4. The ultraviolet curing apparatus according to claim 3, characterized in that: The upper panel of the chassis (10) is also provided with a guide seat (43). The core of the guide hole on the guide seat (43) is arranged parallel to the core of the strip hole (11). The ultraviolet lamp (42) is placed in the guide hole on the guide seat (43) to form a guide fit.

5. The ultraviolet curing apparatus according to claim 1, characterized in that: The outer periphery of the component fixing seat (20) is covered with a light shield (50). The bottom of the two side plates of the light shield (50) are provided with sliding grooves, which form a sliding fit with the sliding rails provided on the upper plate of the chassis (10).

6. The ultraviolet curing apparatus according to claim 1, characterized in that: The chassis (10) is equipped with a short circuit protector, a curing lamp power supply module, a pre-curing time control module, and a curing time control module.

7. The ultraviolet curing apparatus according to claim 1, characterized in that: The upper panel of the chassis (10) is also equipped with an auxiliary docking component (60).

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