A printing cabin automatic door device applied to 3D printing equipment

Abstract

The utility model relates to a printing cabin automatic door device applied to 3D printing equipment belongs to 3D printing equipment technical field, has solved the problem of low degree of automation of cabin door in prior art. The utility model discloses cabin door operation unit, cabin door self -locking unit and cabin door main unit, cabin door operation unit fixedly arranged on the fixed plate of printing cabin, cabin door main unit is connected with cabin door operation unit, and can be driven by cabin door operation unit and reciprocating translation to open or close printing cabin, cabin door self -locking unit includes lock bolt and lock body, and the lock body is fixedly arranged on the first side wall of printing cabin, and the lock bolt is fixedly arranged on one side of cabin door main unit, and the lock bolt can be inserted into the lock body and realizes the locking of cabin door main unit. The utility model drives cabin door main unit reciprocating translation to open or close printing cabin by cabin door operation unit, so that the cabin door can be opened or closed automatically, and manual operation is not needed.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing equipment technology, and in particular to an automatic door device for the printing chamber of 3D printing equipment. Background Technology

[0002] In traditional laser selective melting (SLM) forming equipment, one side of the chamber door is typically hinged to the printing chamber, allowing the door to rotate relative to the chamber for opening and closing. This approach requires external force to rotate the door around the hinge point. This method has low automation and occupies a large space. Furthermore, during 3D printing, high-pressure argon gas needs to be introduced into the chamber, so the door must be able to seal and withstand pressure; however, existing hinged doors cannot provide sufficient sealing and pressure resistance. Utility Model Content

[0003] Based on the above analysis, the present invention aims to provide an automatic door device for printing chambers in 3D printing equipment to solve the problem of low automation of existing chamber doors.

[0004] On one hand, this utility model provides an automatic door device for a printing chamber in 3D printing equipment, including a door operating unit, a door self-locking unit, and a door main body unit; the door operating unit is fixedly mounted on the fixing plate of the printing chamber; the door main body unit is connected to the door operating unit and can be driven by the door operating unit to reciprocate and translate to open or close the printing chamber; the door self-locking unit includes a latch and a lock body, the lock body is fixedly mounted on the first side wall of the printing chamber, the latch is fixedly mounted on one side of the door main body unit, and the latch can be inserted into the lock body to lock the door main body unit.

[0005] Furthermore, the hatch operating unit includes a linear drive element, a slider, and a linear guide rail; the slider is disposed on the linear guide rail, the hatch main body unit is fixedly connected to the slider, and the output end of the linear drive element is fixedly connected to the hatch main body unit.

[0006] Furthermore, the linear drive element is an electric actuator, a pneumatic actuator, or a hydraulic actuator.

[0007] Furthermore, it also includes a hatch sealing unit.

[0008] Furthermore, the door sealing unit includes an inflatable, expandable sealing strip.

[0009] Furthermore, the inflatable, tightening sealing strip is disposed on the inner side wall of the main body unit of the door or on the first side wall of the printing chamber.

[0010] Furthermore, the inflatable and tightenable sealing strip is disposed in an annular sealing groove, which is disposed on the inner side wall of the main body unit of the hatch or on the first side wall of the printing chamber.

[0011] Furthermore, the inflatable and tightenable sealing strip is provided with an air inlet, which is connected to an air source.

[0012] Furthermore, the main body unit of the hatch includes a hatch and an observation window, the observation window being disposed on the hatch.

[0013] Furthermore, the main body unit of the hatch also includes a glove cover, which is disposed on the hatch and located below the observation window.

[0014] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0015] (1) This utility model drives the main body unit of the door to reciprocate and translate to open or close the printing chamber by the door running unit, so that the door can open or close automatically without manual operation, which improves the automation level of the equipment picking process.

[0016] (2) The present invention sets the hatch as a sliding type, which has higher passage efficiency, stronger space adaptability and lower maintenance cost compared with the pivot type in the prior art.

[0017] (3) This utility model achieves sealing after the hatch is closed by using an inflatable and tightenable sealing strip. The sealing effect is good. After printing, the air is released and the hatch retracts, which does not affect the horizontal movement of the hatch.

[0018] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the description and accompanying drawings, which are particularly pointed out. Attached Figure Description

[0019] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0020] Figure 1 A schematic diagram of the automatic door device for the printing chamber of this utility model applied to 3D printing equipment;

[0021] Figure 2 for Figure 1 A schematic diagram of the device after removing the main hatch unit;

[0022] Figure 3 This is a schematic diagram of the self-locking unit of the automatic door device for the printing chamber of 3D printing equipment according to this utility model.

[0023] Figure label:

[0024] 1-Linear drive element; 2-First linear guide rail; 3-Drag chain; 4-Second linear guide rail; 5-Hatch door; 6-Glove cover; 7-Hatch door self-locking unit; 8-Fixing plate; 9-Hatch sealing strip; 10-Sealing strip air inlet; 11-Observation window; 12-Lock tongue; 13-Lock body. Detailed Implementation

[0025] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0026] Example 1

[0027] A specific embodiment of this utility model is as follows: Figure 1 As shown, an automatic door device for the printing chamber of a 3D printing equipment is disclosed. See also... Figure 1 , Figure 2 The printing chamber has a fixing plate 8 and a first side wall. The fixing plate 8 is located at the top, and the first side wall is located at the front of the printing chamber. A rectangular door opening is provided on the first side wall, which can be closed by a door 5.

[0028] See Figure 1 , Figure 2 as well as Figure 3 The automatic door device for the printing chamber of this embodiment, applied to 3D printing equipment, includes a door operating unit, a door self-locking unit 7, and a door main unit. The door operating unit is fixedly mounted on the fixing plate 8 of the printing chamber. The door main unit is connected to the door operating unit and can be driven by the door operating unit to reciprocate and translate to open or close the printing chamber. The door self-locking unit 7 includes a latch 12 and a lock body 13. The lock body 13 is fixedly mounted on the first side wall of the printing chamber, and the latch 12 is fixedly mounted on one side of the door main unit. The latch 12 can be inserted into the lock body 13 to lock the door main unit.

[0029] The main unit of the door includes a door 5, an observation window 11, and a glove shield 6. Both the observation window 11 and the glove shield 6 are located on the door 5. The observation window 11 is used to observe the printing process inside the printing chamber. Two glove shields 6 are provided, located below the observation window 11, allowing personnel to reach into the printing chamber for operation. A cable chain 3 is also installed between the door 5 and the first side wall of the printing chamber for carrying cables and air hoses.

[0030] Specifically, the hatch operating unit includes a linear drive element 1, a slider, and a linear guide rail. The linear drive element 1 is fixedly mounted on a fixed plate 8, the linear guide rail is mounted on the first side wall, the slider is mounted on the linear guide rail, the hatch main body unit is fixedly connected to the slider, and the output end of the linear drive element 1 is fixedly connected to the hatch main body unit.

[0031] In a preferred embodiment, two linear guides are provided: a first linear guide 2 located on the upper part of the first sidewall and a second linear guide 4 located on the lower part of the first sidewall. Each linear guide has two sliders, namely the second linear guide 4 and the first linear guide 2. These four sliders are fixedly connected to one corner of the hatch main body unit, stably positioning the hatch main body unit on the linear guides.

[0032] The linear drive element 1 can be an electric push rod, a pneumatic push rod, or a hydraulic push rod. The output end of the linear drive element 1 is fixedly connected to the hatch main body unit and can automatically push the hatch main body unit to reciprocate and translate.

[0033] See Figure 2 The automatic door device for the printing chamber of the 3D printing equipment in this embodiment also includes a door sealing unit. The door sealing unit includes an inflatable, expandable sealing strip. Specifically, the inflatable, expandable sealing strip is disposed on the inner wall of the door main unit or on the first side wall of the printing chamber. The inflatable, expandable sealing strip surrounds the door opening on the first side wall. Specifically, an annular protrusion is provided on the inner wall of the door main unit or on the first side wall of the printing chamber, surrounding the door opening on the first side wall. An annular sealing groove is provided at the top of the annular protrusion, and the inflatable, expandable sealing strip is fixedly disposed within the annular sealing groove.

[0034] An air inlet is provided on the inflatable and tightening sealing strip, which is connected to an air source. This air inlet is the sealing strip air inlet 10. When the hatch 5 moves into place and the locking tongue 12 enters the lock body 13 and automatically locks, a signal is sent to the control system. The control system controls the air source to supply air, and the gas enters the inflatable and tightening sealing strip through the air inlet, causing the inflatable and tightening sealing strip to expand and protrude beyond the annular sealing groove, and tightly adhere to the first side wall of the printing chamber or the inner side wall of the hatch main body unit, thereby sealing the chamber. Here, the inflatable and tightening sealing strip is the chamber sealing strip 9.

[0035] Once printing is complete, the control system connects the air inlet to the outside and releases air. At this time, the air can be inflated to tighten the sealing strip and retract into the annular sealing groove, freeing up the movement space of the main door unit and avoiding interference.

[0036] In a preferred embodiment, the hatch self-locking unit 7 also includes a limit switch, which is integrated inside the lock body 13. When the hatch main body unit moves to the hatch opening position, the latch 12 extends into the lock body 13 and touches the limit switch. The control system then controls the hatch main body unit to stop moving, and the hatch self-locking unit 7 locks the hatch. After printing in the printing compartment is completed, the hatch self-locking unit 7 is unlocked.

[0037] Compared with existing technologies, the automatic door device for the printing chamber of 3D printing equipment provided in this embodiment drives the main body unit of the printing chamber to reciprocate and translate to open or close the printing chamber through the door operating unit. This allows the door to open or close automatically without manual operation, improving the automation level of the equipment's part-removal process. By setting the door to a sliding type, compared with the pivot type in the prior art, it has higher passage efficiency, stronger spatial adaptability, and lower maintenance costs.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic door device for a printing chamber in 3D printing equipment, characterized in that, It includes a door operating unit, a door self-locking unit, and a door main body unit; the door operating unit is fixedly mounted on the fixing plate of the printing chamber; the door main body unit is connected to the door operating unit and can be driven by the door operating unit to reciprocate and translate to open or close the printing chamber; The hatch self-locking unit includes a latch and a lock body. The lock body is fixedly installed on the first side wall of the printing chamber, and the latch is fixedly installed on one side of the hatch main body unit. The latch can be inserted into the lock body to lock the hatch main body unit.

2. The automatic door device for the printing chamber of 3D printing equipment according to claim 1, characterized in that, The hatch operating unit includes a linear drive element, a slider, and a linear guide rail; the slider is disposed on the linear guide rail, the hatch main body unit is fixedly connected to the slider, and the output end of the linear drive element is fixedly connected to the hatch main body unit.

3. The automatic door device for the printing chamber of 3D printing equipment according to claim 2, characterized in that, The linear drive element is an electric actuator, a pneumatic actuator, or a hydraulic actuator.

4. The automatic door device for the printing chamber of 3D printing equipment according to claim 3, characterized in that, It also includes the hatch sealing unit.

5. The automatic door device for the printing chamber of 3D printing equipment according to claim 4, characterized in that, The door sealing unit includes an inflatable, expandable sealing strip.

6. The automatic door device for the printing chamber of 3D printing equipment according to claim 5, characterized in that, The inflatable, tightening sealing strip is disposed on the inner side wall of the main body unit of the door or on the first side wall of the printing chamber.

7. The automatic door device for the printing chamber of 3D printing equipment according to claim 6, characterized in that, The inflatable, tightening sealing strip is disposed within an annular sealing groove, which is disposed on the inner side wall of the main body unit of the hatch or on the first side wall of the printing chamber.

8. The automatic door device for the printing chamber of a 3D printing equipment according to claim 7, characterized in that, The inflatable sealing strip is equipped with an air inlet, which is connected to an air source.

9. The automatic door device for the printing chamber of a 3D printing equipment according to claim 8, characterized in that, The main body unit of the hatch includes a hatch and an observation window, with the observation window located on the hatch.

10. The automatic door device for the printing chamber of a 3D printing equipment according to claim 9, characterized in that, The main body unit of the hatch also includes a glove cover, which is disposed on the hatch and located below the observation window.

Images