Double-tube heating lamp tube assembly
By installing external reflectors and sliding structures on the heating lamp tubes, the problem of easy falling off of the reflective coating of the existing heating lamp tubes is solved, which improves service life and adaptability and reduces maintenance costs.
Patent Information
- Application Number
- CN202323550993.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2033-12-25
AI Technical Summary
In 3D printing, the existing heating lamp tubes are prone to fall off and sublimation failure, resulting in short service life and frequent replacement, which increases the cost.
A dual-tube heating lamp assembly is designed to reflect light using an external reflector. The reflector is made of metal, ceramic or quartz, and the light reflection area is adjusted through a sliding structure to adapt to different environments.
It improves the service life of the heating lamp tube, reduces maintenance costs, avoids the problem of plating falling off, and adapts to different working environments.
Smart Images
Figure CN222441880U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lamps, in particular to a double-tube heating lamp assembly. Background Art
[0002] In 3D printing SLS nylon sintering applications, the assistance of heating lamps is usually required. The heating lamps are used to preheat the workbench or build chamber to provide a constant temperature environment to ensure that the printing material can be kept within a suitable temperature range during the printing process, thereby improving the printing quality and success rate.
[0003] Heating lamps are generally protected or have their heat conduction efficiency improved by coating the surface with a gold-plated layer. Traditional infrared heating lamps coat the reflective layer on the tube, and the coating is easy to fall off and sublimate. During 3D printing, the molecular thermal motion of dust intensifies in a high-temperature environment, which can easily cause the tube coating to fail quickly, thus affecting the service life of the lamp and requiring frequent replacement of the heating lamp, which greatly increases costs.
[0004] The utility model is made based on the above situation. Utility Model Content
[0005] The utility model overcomes the shortcomings of the prior art, provides a double-tube heating lamp assembly with an external reflector, solves the problem of easy shedding and sublimation failure of the reflective coating of the heating lamp, and increases the service life of the heating lamp.
[0006] The utility model is realized by the following technical solutions:
[0007] A double-tube heating lamp assembly includes two lamp tubes arranged side by side and a reflector arranged above the lamp tubes for reflecting light. A heating filament is arranged inside the lamp tube, and a terminal electrically connected to the heating filament is arranged at one end of the lamp tube. The reflector includes a middle transition section for reflecting upward light back to the bottom of the lamp tube, and a first arc section and a second arc section respectively arranged on both sides of the middle transition section and used to reflect outward light back to the bottom of the lamp tube.
[0008] In the double-tube heating lamp assembly as described above, the middle transition section is a straight section.
[0009] In a double-tube heating lamp assembly as described above, the middle transition section includes a third arc section and a fourth arc section, the third arc section and the first arc section form a first concave area for placing one lamp tube, and the fourth arc section and the second arc section form a second concave area for placing another lamp tube.
[0010] In a double-tube heating lamp assembly as described above, a first sliding structure is provided between the first arc segment and the third arc segment, which enables the first arc segment to slide along the upper surface of the third arc segment; a second sliding structure is provided between the second arc segment and the fourth arc segment, which enables the second arc segment to slide along the upper surface of the fourth arc segment.
[0011] In a double-tube heating lamp assembly as described above, the first sliding structure includes a first connecting seat arranged at the front and rear ends of the third arc segment and a second connecting seat arranged at the front and rear ends of the first arc segment, the second connecting seat is provided with a first sliding groove, the first connecting seat is provided with a first limiting rod extending into the first sliding groove, and the end of the first limiting rod is provided on a first limiting block for limiting the first limiting rod from exiting the first sliding groove.
[0012] In the double-tube heating lamp assembly as described above, the second sliding structure has the same structure as the first sliding structure.
[0013] In the double-tube heating lamp assembly as described above, a fifth arc segment is further provided between the third arc segment and the fourth arc segment, and both ends of the fifth arc segment are respectively connected to the third arc segment and the fourth arc segment, and the protrusion of the fifth arc segment protrudes toward the gap between the two lamp tubes.
[0014] In the double-tube heating lamp assembly as described above, the third arc segment, the fourth arc segment and the fifth arc segment are integrally formed.
[0015] In the double-tube heating lamp assembly as described above, the first arc segment, the second arc segment and the middle transition segment are integrally formed.
[0016] In the double-tube heating lamp assembly as described above, the reflector is made of metal, ceramic or quartz.
[0017] Compared with the prior art, the utility model has the following advantages:
[0018] 1. The reflective sheet above the lamp tube is used to reflect light. The reflective sheet is prepared separately. Compared with the reflective coating applied on the lamp tube, the density of the reflective sheet prepared in blocks is higher than that of the coating and other solutions. This makes the reflective sheet less likely to fail due to the molecular thermal motion of dust in a high temperature and high dust environment. The reflective sheet can be replaced separately. Since the entire lamp tube does not need to be replaced, the maintenance cost can be reduced.
[0019] 2. The reflector is installed above the lamp tube, so as to block part of the dust falling from above, prevent the dust from accumulating above the lamp tube, reduce the impact of dust on the lamp tube, and increase the service life.
[0020] 3. After using the clamp to clamp the lamp, there will be no problem of partial peeling of the coating similar to the coating process.
[0021] 4. A first sliding structure is provided between the first arc segment and the third arc segment, which enables the first arc segment to slide along the upper surface of the third arc segment. A second sliding structure is provided between the second arc segment and the fourth arc segment, which enables the second arc segment to slide along the upper surface of the fourth arc segment. The extension lengths of the first arc segment and the third arc segment are adjusted by the first sliding structure and the second sliding structure, thereby changing the area where light is reflected to adapt to different working environments. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:
[0023] Figure 1 It is an exploded view of the utility model;
[0024] Figure 2 It is a cross-sectional view of Example 1 of the utility model;
[0025] Figure 3 It is a cross-sectional view of Embodiment 2 of the present utility model;
[0026] Figure 4 It is a cross-sectional view of the reflective sheet in Example 2 of the present utility model.
[0027] Figure 5 This is a schematic diagram of the structure of the utility model embodiment 3 Figure 1 ;
[0028] Figure 6 This is a schematic diagram of the structure of the utility model embodiment 3 Figure 2 ;
[0029] Figure 7 It is an exploded view of the reflective sheet in Example 3 of the present utility model. DETAILED DESCRIPTION
[0030] The utility model is further described below in conjunction with the accompanying drawings:
[0031] Embodiment 1:
[0032] like Figure 1 to Figure 2A double-tube heating lamp assembly shown includes two lamp tubes 1 arranged side by side and a reflector 4 arranged above the lamp tube 1 for reflecting light. The reflector 4 is directly put on the lamp tube 1 and then the lamp tube 1 and the reflector 4 are clamped by the lamp clamp on the 3D printer. Of course, the reflector 4 can also be fixed above the lamp tube 1 directly by the clamp without contacting the lamp tube 1. The interior of the lamp tube 1 is provided with a heating filament 2 for emitting light and generating heat. One end of the lamp tube 1 is provided with a terminal 3 electrically connected to the heating filament 2. The reflector 4 includes an intermediate transition section 41 for reflecting upward light back to the bottom of the lamp tube 1, and a first arc section 42 and a second arc section 43 respectively arranged on both sides of the intermediate transition section 41 and used to reflect outward light back to the 3D printer working area below the lamp tube 1. The first arc section 42, the second arc section 43 and the intermediate transition section 41 are integrally formed. The first arc section 42, the second arc section 43 and the intermediate transition section 41 surround the placement area of the lamp tube 1.
[0033] The reflective sheet 4 is prepared separately. Compared with applying a reflective coating on the lamp tube 1, the density of the reflective sheet 4 prepared in blocks is higher than that of the coating and other solutions. This makes the reflective sheet 4 less likely to fail due to the molecular thermal motion of dust in a high temperature and high dust environment. The reflective sheet 4 can be replaced separately. Since the entire lamp tube does not need to be replaced, the maintenance cost can be reduced. The reflective sheet 4 is arranged above the lamp tube 1, so as to block part of the dust falling from above, prevent dust from accumulating above the lamp tube 1, reduce the impact of dust on the lamp tube 1, and increase the service life of the lamp tube 1. After the lamp 1 is clamped with a clamp, the problem of partial shedding of the coating similar to the coating process will not occur.
[0034] The reflective sheet 4 is made of metal, ceramic, quartz or other materials. Metal, ceramic, quartz and other materials have good thermal conductivity, are easy to dissipate heat, have good high temperature resistance and can withstand high temperature environments, and are not easily affected by thermal expansion. They have a high surface finish and a high reflectivity, can effectively reflect the light emitted by the lamp, have good resistance to chemical corrosion and oxidation, and can extend the service life.
[0035] The middle transition section 41 is a straight section, which is easy to process and prepare. The ratio range of the width S of the straight section and the center distance L of the two lamp tubes 1 is 1≤S / L≤1.1. If the ratio range is too large, it will affect the reflection effect of light, and also affect the clamping of the lamp clip to the heating lamp tube assembly. If the ratio range is too small, it will increase the difficulty of preparation, and a recessed portion will be formed on the upper surface, which is easy to accumulate dust.
[0036] The first arc segment 42 and the second arc segment 43 have the same shape and size. The ratio of the radius of the first arc segment 42 to the radius of the lamp tube 1 is in the range of 1 to 1.2. If the ratio is too large, the gap between the reflector 4 and the lamp tube 1 will increase, thereby increasing the number of light reflections and increasing light energy loss.
[0037] The line connecting the lowest point of the first arc segment 42 and the lowest point of the second arc segment 43 passes through the center points of the two lamp tubes 1. If the lowest point of the first arc segment 42 and the lowest point of the second arc segment 43 are too high, part of the light will not be reflected back to the working area below the lamp tube 1. If the lowest point of the first arc segment 42 and the lowest point of the second arc segment 43 are too low, the number of reflections of the light will increase, thereby increasing energy loss and reducing the use effect.
[0038] Embodiment 2:
[0039] like Figure 3 to Figure 4 A double-tube heating lamp assembly is shown, and the difference between Example 2 and Example 1 is that:
[0040] The intermediate transition section 41 includes a third arc section 411 and a fourth arc section 412, which can be directly connected or connected by adding a connecting portion. The third arc section 411 and the first arc section 42 form a first concave area 51 for placing a lamp tube 1, and the fourth arc section 412 and the second arc section 43 form a second concave area 52 for placing another lamp tube 1. Thus, the reflector 4 is closer to the lamp tube 1, and the reflectivity is improved.
[0041] A fifth arc segment 413 is further provided between the third arc segment 411 and the fourth arc segment 412, and both ends of the fifth arc segment are respectively connected to the third arc segment 411 and the fourth arc segment 412, and a protrusion of the fifth arc segment 413 protrudes toward the gap between the two lamp tubes 1. The third arc segment 411, the fourth arc segment 412 and the fifth arc segment 413 are integrally formed.
[0042] Embodiment 3:
[0043] like Figures 5 to 7 The double-tube heating lamp assembly shown in the figure, the difference between the embodiment 3 and the embodiment 2 is that:
[0044] A first sliding structure is provided between the first arc segment 42 and the third arc segment 411, which enables the first arc segment 42 to slide along the upper surface of the third arc segment 411; a second sliding structure is provided between the second arc segment 43 and the fourth arc segment 412, which enables the second arc segment 43 to slide along the upper surface of the fourth arc segment 412. The extension lengths of the first arc segment 42 and the third arc segment 411 are adjusted by the first sliding structure and the second sliding structure, thereby changing the area where light is reflected to adapt to different working environments.
[0045] The first sliding structure includes a first connecting seat 414 disposed at the front and rear ends of the third arc segment 411 and a second connecting seat 421 disposed at the front and rear ends of the first arc segment 42, the second connecting seat 421 is provided with a first slide groove 4211, and the first connecting seat 414 is provided with a first limiting rod 4141 extending into the first slide groove 4211. The end of the first limiting rod 4141 is disposed at a first limiting block 4142 for limiting the first limiting rod 4141 from exiting the first slide groove 4211. The first connecting seat 414 is integrally formed with the third arc segment 411, and the second connecting seat 421 is integrally formed with the first arc segment 42. The first limiting rod 4141 and the first limiting block 4142 can be a bolt structure, the first limiting rod 4141 is a screw rod, the first limiting block 4142 is a nut, and the first limiting rod 4141 is threadedly connected to the first connecting seat 414. There is a certain damping between the first limiting rod 4141 and the first sliding groove 4211 , so that the first arc segment 42 will not slide by itself, and the first limiting block 4142 can also press the second connecting seat 421 to limit the sliding of the first arc segment 42 .
[0046] The second sliding structure has the same structure as the first sliding structure. The first sliding structure includes a third connecting seat 4121 disposed at the front and rear ends of the fourth arc segment 412 and a fourth connecting seat 431 disposed at the front and rear ends of the second arc segment 43. The fourth connecting seat 431 is provided with a second slide groove 4311, and the third connecting seat 4121 is provided with a second limiting rod 4122 extending into the second slide groove 4311. The end of the second limiting rod 4122 is provided at a second limiting block 4123 for limiting the second limiting rod 4122 from exiting the second slide groove 4311. The third connecting seat 4121 is integrally formed with the fourth arc segment 412, and the fourth connecting seat 431 is integrally formed with the second arc segment 43. The second limiting rod 4122 and the second limiting block 4123 can be a bolt structure, the second limiting rod 4122 is a screw rod, the second limiting block 4123 is a nut, and the second limiting rod 4122 is threadedly connected to the third connecting seat 4121. There is a certain damping between the second limiting rod 4122 and the second sliding groove 4311 , so that the second arc segment 43 will not slide by itself, and the second limiting block 4123 can also press the fourth connecting seat 431 to limit the sliding of the second arc segment 43 .
Claims
1. A double-tube heating lamp assembly, characterized in that: The invention comprises two lamp tubes (1) arranged side by side and a reflector (4) arranged above the lamp tubes (1) for reflecting light, wherein a heating filament (2) is arranged inside the lamp tube (1), and a connection terminal (3) electrically connected to the heating filament (2) is arranged at one end of the lamp tube (1), and the reflector (4) comprises a middle transition section (41) for reflecting upward light back to the bottom of the lamp tube (1), and a first arc section (42) and a second arc section (43) respectively arranged on both sides of the middle transition section (41) and used to reflect outward light back to the bottom of the lamp tube (1).
2. A double-tube heating lamp assembly according to claim 1, characterized in that: The middle transition section (41) is a straight section.
3. The double-tube heating lamp assembly according to claim 1, characterized in that: The intermediate transition section (41) comprises a third arc section (411) and a fourth arc section (412); the third arc section (411) and the first arc section (42) form a first concave area (51) for placing a lamp tube (1); the fourth arc section (412) and the second arc section (43) form a second concave area (52) for placing another lamp tube (1).
4. A double-tube heating lamp assembly according to claim 3, characterized in that: A first sliding structure is provided between the first arc segment (42) and the third arc segment (411), enabling the first arc segment (42) to slide along the upper surface of the third arc segment (411); and a second sliding structure is provided between the second arc segment (43) and the fourth arc segment (412), enabling the second arc segment (43) to slide along the upper surface of the fourth arc segment (412).
5. A double-tube heating lamp assembly according to claim 4, characterized in that: The first sliding structure comprises a first connecting seat (414) arranged at the front and rear ends of the third arc segment (411) and a second connecting seat (421) arranged at the front and rear ends of the first arc segment (42), the second connecting seat (421) being provided with a first sliding groove (4211), the first connecting seat (414) being provided with a first limiting rod (4141) extending into the first sliding groove (4211), the end of the first limiting rod (4141) being provided at a first limiting block (4142) for limiting the first limiting rod (4141) from exiting the first sliding groove (4211).
6. A double-tube heating lamp assembly according to claim 5, characterized in that: The second sliding structure has the same structure as the first sliding structure.
7. The double-tube heating lamp assembly according to claim 3, characterized in that: A fifth arc segment (413) is also provided between the third arc segment (411) and the fourth arc segment (412), the two ends of the fifth arc segment being respectively connected to the third arc segment (411) and the fourth arc segment (412), and the protruding portion of the fifth arc segment (413) protrudes toward the gap between the two lamp tubes (1).
8. The double-tube heating lamp assembly according to claim 3, characterized in that: The third arc segment (411), the fourth arc segment (412) and the fifth arc segment (413) are integrally formed.
9. A double-tube heating lamp assembly according to claim 2 or 3, characterized in that: The first arc segment (42), the second arc segment (43) and the intermediate transition segment (41) are integrally formed.
10. The double-tube heating lamp assembly according to claim 6, characterized in that: The reflective sheet (4) is made of metal, ceramic or quartz.