Energy-saving heating system of 3D printing equipment

Abstract

The utility model discloses an energy-saving heating system of 3D printing equipment, which relates to the technical field of 3D printers and comprises a hot bed base plate, a bottom cover plate and fixing screws for connecting the bottom cover plate and the hot bed base plate, a heating device is mounted in an interlayer between the hot bed base plate and the bottom cover plate, and an adjusting device is connected to the side surface of the heating device; the heating device is fixed in an open groove in the bottom of the hot bed base plate through the bottom cover plate, the bottom cover plate and the adjusting device are fixed to the bottom of the hot bed base plate through the fixing screws, the hot bed base plate is fixed to a working platform of the 3D printer through the screws in the using process, and the adjusting device is connected with an external power source. The deformation degree of the switch elastic piece is changed through the position of the adjusting switch in the adjusting device, the working area of the heating device is adjusted, and by changing the working area of the heating device, the whole hot bed base plate does not need to be heated when a small-size workpiece is machined, so that unnecessary energy loss is reduced, and the effect of saving energy is achieved.

Description

Technical Field

[0001] This utility model relates to the field of 3D printer technology, and in particular to an energy-saving heating system for 3D printing equipment. Background Technology

[0002] 3D printing, also known as additive manufacturing, is a technology that manufactures solid parts by adding materials layer by layer based on 3D CAD data. During the 3D printing process, the cooling and shrinkage of the material can cause warping of the printed parts. Moreover, since different materials have different shrinkage rates, the degree of warping also varies. Warping is inevitable and unavoidable; the only thing that can be done is to mitigate its impact. To prevent warping of printed parts, a heated bed is usually used during the processing. The main principle of a heated bed is to maintain a high temperature at the contact surface between the printed part and the heated bed by heating the bed, thus preventing warping of the model due to material cooling during the printing process.

[0003] However, in existing technologies, commonly used heated beds typically consist of an upper heated bed heat-conducting substrate and a heating pad installed below the substrate to heat the substrate. The heating pad mainly generates heat through the resistance heating effect, that is, when current passes through a resistor, it generates heat, thereby heating the substrate. When a traditional heated bed is in operation, because the heating pad is completely attached to the bottom of the substrate, even when processing small parts, the entire heated bed will be heated. The heated area is much larger than the area occupied by the part, resulting in heat loss in the heated area outside the part, causing a waste of resources. To address this issue, we propose an energy-saving heating system for 3D printing equipment. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing an energy-saving heating system for 3D printing equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: including a heated bed substrate, a bottom cover plate, and fixing screws connecting the bottom cover plate and the heated bed substrate; a heating device is installed in the middle interlayer between the heated bed substrate and the bottom cover plate; and an adjustment device is connected to the side of the heating device.

[0006] The heating device is fixed in the slot at the bottom of the heated bed substrate by the bottom cover plate, and the bottom cover plate and the adjustment device are fixed to the bottom of the heated bed substrate by fixing screws.

[0007] Preferably, the heating device includes a heating pad, a central heating washer, and a peripheral heating washer. The heating pad, the central heating washer, and the peripheral heating washer are all provided with wiring boards on their sides, and conductive sheets are installed on the sides of the wiring boards.

[0008] Preferably, the adjustment device includes an outer cover, a switch spring, a power cord connector, and an adjustment switch. One end of the switch spring is fixed to the outer cover and communicates with the power cord connector, and the switch spring is provided with three arc-shaped contacts.

[0009] Preferably, the regulating switch has an arc-shaped top block inside and an inwardly concave arc-shaped structure on the outside.

[0010] Preferably, a knob is fixed to the end of the fixing screw, and an anti-slip structure is provided on the outside of the knob.

[0011] Preferably, the bottom of the heated bed substrate has a slot, and the slot is provided with layered isolation rings, which are disposed between the heating pad, the middle heating pad and the outer heating pad.

[0012] Preferably, the bottom cover plate is provided with a raised locking washer on the top, and there are three locking washers, which correspond to the outer rings of the heating pad, the middle heating washer and the outer ring of the outer heating washer, respectively.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, the heating device is fixed in the slot at the bottom of the heated bed substrate by a bottom cover plate. The bottom cover plate and the adjustment device are fixed to the bottom of the heated bed substrate by fixing screws. The heating pad, the middle heating washer, and the outer heating washer are connected to the circuit by a conductive sheet. The adjustment device includes a switch spring and an adjustment switch. The corresponding heating pad, the middle heating washer, and the outer heating washer are connected to the circuit by the contact between the switch spring and the adjustment switch. The contact point on the switch spring contacts the conductive sheet by the abutment of the adjustment switch. The working area of ​​the heating device is adjusted by changing the deformation degree of the switch spring by moving the position of the adjustment switch. By changing the working area of ​​the heating device, it is not necessary to heat the entire heated bed substrate when processing small workpieces, thereby reducing unnecessary energy consumption and achieving the effect of energy saving.

[0015] 2. In this utility model, the internal part of the regulating switch is provided with an arc-shaped top block, and the external part of the regulating switch is provided with a concave arc-shaped structure. The fixing screw is rotated by the knob, so no other tools are needed during disassembly and installation, which facilitates manual operation and disassembly maintenance. The heating pad, the middle heating pad, and the outer heating pad are separated from each other by the insulating ring, so that the heat generated in the working area of ​​the heating device is more concentrated. The heating pad, the middle heating pad, and the outer heating pad are squeezed by the locking washer, so that the installation position of the heating device is more stable, while reducing the contact area between the heating device and the bottom cover plate, thereby reducing the heat loss generated by the heating device. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural diagram of an energy-saving heating system for 3D printing equipment;

[0017] Figure 2 This utility model provides a schematic diagram of the bottom three-dimensional structure of an energy-saving heating system for 3D printing equipment;

[0018] Figure 3 This utility model provides a three-dimensional structural diagram of the internal structure of an energy-saving heating system for 3D printing equipment;

[0019] Figure 4 This utility model provides an exploded three-dimensional structural diagram of the heating device of an energy-saving heating system for 3D printing equipment;

[0020] Figure 5 This utility model provides a schematic diagram of the internal three-dimensional structure of the adjustment device of an energy-saving heating system for 3D printing equipment;

[0021] Figure 6 This utility model presents a schematic diagram of the internal three-dimensional structure of the bottom cover plate of an energy-saving heating system for 3D printing equipment.

[0022] Legend: 1. Heated bed base plate; 2. Heating device; 21. Heating pad; 22. Middle heating washer; 23. Outer heating washer; 24. Terminal block; 25. Conductive sheet; 3. Adjustment device; 31. Outer cover; 32. Switch spring; 33. Power cord connector; 34. Adjustment switch; 4. Bottom cover plate; 5. Fixing screw; 6. Isolation ring; 7. Locking washer. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] like Figure 1-6As shown, this utility model provides an energy-saving heating system for 3D printing equipment, including a heated bed substrate 1, a bottom cover plate 4, and fixing screws 5 connecting the bottom cover plate 4 and the heated bed substrate 1. A heating device 2 is installed in the middle layer between the heated bed substrate 1 and the bottom cover plate 4, and an adjustment device 3 is connected to the side of the heating device 2. The heating device 2 is fixed in the slot at the bottom of the heated bed substrate 1 by the bottom cover plate 4, and the bottom cover plate 4 and the adjustment device 3 are fixed to the bottom of the heated bed substrate 1 by the fixing screws 5. In use, the heated bed substrate 1 is fixed to the working platform of the 3D printer by screws, the adjustment device 3 is connected to an external power source, and the heating device 2 is adjusted by the adjustment device 3. By changing the working area of ​​the heating device 2, it is not necessary to heat the entire heated bed substrate 1 when processing small-volume workpieces, thereby reducing unnecessary energy consumption.

[0026] The heating device 2 includes a heating pad 21, a central heating washer 22, and an outer heating washer 23. A wiring board 24 is provided on the side of each of the heating pad 21, the central heating washer 22, and the outer heating washer 23, and a conductive sheet 25 is installed on the side of the wiring board 24. The heating pad 21, the central heating washer 22, and the outer heating washer 23 generate heat when energized. The wiring board 24 is provided with an electrical circuit connected to the conductive sheet 25. The conductive sheet 25 is provided at both the end and one side of the wiring board 24. The circuits of the heating pad 21, the central heating washer 22, and the outer heating washer 23 are connected through the conductive sheet 25.

[0027] The adjustment device 3 includes an outer cover 31, a switch spring 32, a power cord connector 33, and an adjustment switch 34. One end of the switch spring 32 is fixed to the outer cover 31 and connected to the power cord connector 33. The switch spring 32 is provided with three arc-shaped contacts, which correspond to the heating pad 21, the middle heating washer 22, and the wiring plate 24 on the side of the outer heating washer 23, respectively. The contacts correspond to the conductive sheet 25 at the end of the wiring plate 24. By contacting the conductive sheet 25 with the switch spring 32, the corresponding heating pad 21, the middle heating washer 22, and the outer heating washer 23 are connected to the circuit.

[0028] The regulating switch 34 has an arc-shaped top block inside and an inwardly concave arc-shaped structure on the outside. By adjusting the switch 34 and the switch spring 32, the contact point on the switch spring 32 contacts the conductive sheet 25. By moving the position of the regulating switch 34, the deformation degree of the switch spring 32 is changed, thereby adjusting the working area of ​​the heating device 2.

[0029] A knob is fixed to the end of the fixing screw 5, and the outside of the knob is provided with an anti-slip structure. By rotating the fixing screw 5 by the knob, no other tools are needed during disassembly and installation.

[0030] The bottom of the heated bed substrate 1 has a slot, and a layered isolation ring 6 is provided in the slot. The isolation ring 6 is located between the heating pad 21, the middle heating pad 22 and the outer heating pad 23. The isolation ring 6 separates the heating pad 21, the middle heating pad 22 and the outer heating pad 23 from each other, so that the heat generated in the working area of ​​the heating device 2 is more concentrated.

[0031] The bottom cover plate 4 has a raised locking washer 7 on its top. There are three locking washers 7, and the three locking washers 7 correspond to the outer rings of the heating pad 21, the middle heating washer 22 and the outer heating washer 23, respectively. By squeezing the heating pad 21, the middle heating washer 22 and the outer heating washer 23 by the locking washers 7, the installation position of the heating device 2 is more stable, and the contact area between the heating device 2 and the bottom cover plate 4 is reduced, thereby reducing the heat loss generated by the heating device 2.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An energy-saving heating system for 3D printing equipment, comprising a heated bed substrate (1), a bottom cover plate (4), and fixing screws (5) connecting the bottom cover plate (4) and the heated bed substrate (1), characterized in that: A heating device (2) is installed in the middle layer between the heated bed substrate (1) and the bottom cover plate (4), and an adjustment device (3) is connected to the side of the heating device (2). The heating device (2) is fixed in the slot at the bottom of the heated bed substrate (1) by the bottom cover plate (4), and the bottom cover plate (4) and the adjusting device (3) are fixed at the bottom of the heated bed substrate (1) by the fixing screws (5).

2. The energy-saving heating system for 3D printing equipment according to claim 1, characterized in that: The heating device (2) includes a heating pad (21), a middle heating washer (22), and an outer heating washer (23). The heating pad (21), the middle heating washer (22), and the outer heating washer (23) are all provided with a wiring board (24) on their sides, and a conductive sheet (25) is installed on the side of the wiring board (24).

3. The energy-saving heating system for 3D printing equipment according to claim 1, characterized in that: The adjustment device (3) includes an outer cover (31), a switch spring (32), a power cord connector (33), and an adjustment switch (34). One end of the switch spring (32) is fixed to the outer cover (31) and connected to the power cord connector (33). The switch spring (32) is provided with three arc-shaped contacts.

4. The energy-saving heating system for 3D printing equipment according to claim 3, characterized in that: The regulating switch (34) has an arc-shaped top block inside and an inwardly concave arc-shaped structure on the outside.

5. The energy-saving heating system for 3D printing equipment according to claim 1, characterized in that: The end of the fixing screw (5) is fixed with a knob, and the outside of the knob is provided with an anti-slip structure.

6. The energy-saving heating system for 3D printing equipment according to claim 1, characterized in that: The bottom of the heated bed substrate (1) is provided with a slot, and a layered isolation ring (6) is provided in the slot. The isolation ring (6) is located between the heating pad (21), the middle heating pad (22) and the outer heating pad (23).

7. The energy-saving heating system for 3D printing equipment according to claim 1, characterized in that: The bottom cover plate (4) is provided with a raised locking washer (7) on the top. There are three locking washers (7), and the three locking washers (7) correspond to the outer rings of the heating pad (21), the middle heating washer (22) and the outer ring of the outer heating washer (23), respectively.

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