Automatic cavity door structure and additive manufacturing equipment

Abstract

The utility model discloses a cavity automatic door structure and additive manufacturing equipment, the front side face of a cavity is provided with an opening, the cavity automatic door structure comprises a cavity door assembly, a front side door frame, a power driving mechanism and a transmission mechanism, the front side door frame is fixedly installed on the front side face of the cavity, and a frame opening of the front side door frame is aligned with the opening; the power driving mechanism and the transmission mechanism are both installed on the cavity, the cavity door assembly is located on the front side of the front side door frame, the power driving mechanism is connected with the cavity door assembly through the transmission mechanism, and the power driving mechanism drives the cavity door assembly to move through the transmission mechanism, so that the cavity door assembly closes / opens an opening of the cavity. The movement track of the cavity door assembly is an arc, and the cavity door assembly is always kept in a parallel state relative to the front side door frame when moving. The additive manufacturing equipment comprises the automatic door structure of the cavity. According to the utility model, automatic opening / closing of the cavity opening by the cavity door assembly is realized, and the occupied space range of the opening / closing door is small.

Description

TECHNICAL FIELD

[0001] The utility model belongs to additive manufacturing technical field, concretely relates to a cavity automatic door structure and additive manufacturing equipment. BACKGROUND

[0002] Additive manufacturing technology is an advanced manufacturing technology with the characteristics of digital manufacturing, high flexibility and adaptability, direct CAD model driving, rapidness, rich and varied material types, etc. Because it is not limited by the complexity of the shape of the parts, it does not require any tooling mold, so the application range is very wide. Selective laser melting technology (SLM for short) is one of the additive manufacturing technologies that have developed rapidly in recent years, which uses powder material as raw material and uses laser to scan the cross section of a three-dimensional entity layer by layer to complete prototype manufacturing.

[0003] The basic working process of selective laser melting technology is: the powder feeding device sends a certain amount of powder to the working platform surface, the powder laying device lays a layer of powder material on the bottom plate of the forming cylinder or the upper surface of the formed part, the laser galvanometer system controls the laser to scan the solid part powder layer according to the cross section profile of the layer with an approximately constant spot size and beam energy, so that the powder is melted and bonded with the lower formed part; after one layer of cross section is sintered, the working platform is lowered by one layer of thickness, the powder laying device lays a layer of uniform and dense powder on it, and a new layer of cross section is scanned and sintered, and after a plurality of layers of scanning and stacking, the entire prototype manufacturing is completed.

[0004] After the above-mentioned prototype manufacturing is completed, manual maintenance is required to clean the residual powder on the window lens and in the cavity, and the cavity door needs to be opened for operation when replacing the scraper. The traditional cavity door structure is opened / closed by manually loosening / tightening the handle. Manual door makes manual operation more tedious and inefficient. With the development of automation, the demand for automation in the production process is increasing, and the traditional manual operation will be gradually eliminated. Therefore, the automatic door can achieve the purpose of simplifying manual operation. UTILITY MODEL CONTENTS

[0005] The utility model overcomes the defects of prior art, provides a cavity automatic door structure, and the utility model discloses through power drive mechanism drive cavity door assembly movement through transmission mechanism, realizes the automation of cavity door assembly to the opening of cavity, and the space range occupied by opening and closing door is small, and the overall structure is simple, can effectively reduce the manufacturing cost.

[0006] In order to achieve the above object, the utility model provides a cavity automatic door structure, the front side of cavity is equipped with opening, the cavity automatic door structure includes cavity door subassembly, front side door frame, power drive mechanism and transmission mechanism, the front side door frame is fixedly installed on the front side of the cavity, and the frame mouth of front side door frame is aligned with the opening,

[0007] The power drive mechanism and transmission mechanism are installed on the cavity, the cavity door subassembly is located at the front side of the front side door frame, the power drive mechanism is connected with the cavity door subassembly through the transmission mechanism, the power drive mechanism drives the cavity door subassembly to move through the transmission mechanism, makes the cavity door subassembly close / open the opening of the cavity, the movement track of the cavity door subassembly is circular arc, and the cavity door subassembly always keeps parallel state relative to the front side door frame when moving.

[0008] Further, the transmission mechanism includes rotating shaft, connecting shaft, first connecting rod, second connecting rod and support rod, the rotating shaft is vertically rotatably installed on one side of the cavity opening, the connecting shaft is vertically rotatably installed in the middle of the inner side of the cavity door subassembly, and the connecting shaft is parallel with the rotating shaft, the rotating shaft is connected with the power drive mechanism, and the power drive mechanism drives the rotating shaft to rotate,

[0009] The rotating shaft is hinged with the connecting shaft through the first connecting rod and the second connecting rod arranged in parallel, and a parallelogram structure is formed between the first connecting rod, the second connecting rod, the rotating shaft and the connecting shaft.

[0010] One end of the support rod is rotatably connected to the middle below the cavity opening, and the other end of the support rod is rotatably connected to the inner side of the cavity door subassembly, the support rod is parallel with the second connecting rod, and a parallelogram structure is formed between the support rod, the second connecting rod, the cavity and the cavity door subassembly.

[0011] Further, the power drive mechanism includes a cylinder, a connecting seat, a rack and a gear, the cylinder is fixedly installed above the outer side wall of the cavity, the piston rod of the cylinder is connected with the connecting seat, the connecting seat is connected with the rack, and the gear is installed on the rotating shaft, and the rack is engaged with the gear.

[0012] Further, the power drive mechanism further includes a guide assembly, the guide assembly includes a linear guide rail and a guide groove arranged on the connecting seat, and the linear guide rail is fixedly installed above the outer side wall of the cavity; the linear guide rail and the guide groove are movably and cooperatively installed, and the linear guide rail is parallel with the rack.

[0013] Further, the power driving mechanism further comprises limiting blocks, the number of the limiting blocks is two, the two limiting blocks are arranged in parallel and alternately, and the rack is located between the two limiting blocks, and the two limiting blocks are used for axial limiting of the rack.

[0014] The utility model provides a kind of additive manufacturing equipment, including the cavity automatic door structure of described.

[0015] The utility model has the advantages of: the utility model drives cavity door assembly movement through power driving mechanism via transmission mechanism, realizes the automation of cavity door assembly to cavity opening open / close, effectively simplifies manual operation.Cavity door assembly's movement track is circular arc at the same time, cavity door assembly movement is always kept parallel state relative to front door frame, so that door opening and closing occupy small space range.The utility model is simple in overall structure, and can effectively reduce manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be simply introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0017] Figure 1 It is a perspective view of the utility model;

[0018] Figure 2 It is Figure 1 It is a perspective view after cavity door assembly is removed;

[0019] Figure 3 It is Figure 1 It is a perspective view after rotating a certain angle;

[0020] Figure 4 It is a perspective view of power driving mechanism of the utility model;

[0021] Figure 5 It is Figure 4 It is a perspective view after rotating a certain angle.

[0022] The above reference signs:

[0023] 1, cavity; 2, cavity door assembly; 3, front door frame; 4, power driving mechanism; 5, transmission mechanism; 40, air cylinder; 41, connecting seat; 42, rack; 43, gear; 44, linear guide rail; 45, limiting block; 50, rotating shaft; 51, first connecting rod; 52, connecting shaft; 53, second connecting rod; 54, support rod. DETAILED DESCRIPTION

[0024] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings. The drawings show the preferred embodiments of the utility model. However, the utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0025] As Figures 1-5 The utility model provides a cavity automatic door structure, the front side of cavity 1 is equipped with opening, cavity automatic door structure includes cavity door subassembly 2, front side door frame 3, power drive mechanism 4 and transmission mechanism 5, front side door frame 3 is fixedly installed on the front side of cavity 1, and the frame mouth of front side door frame 3 is aligned with the opening.

[0026] Power drive mechanism 4 and transmission mechanism 5 are all installed on the cavity 1, the cavity door subassembly 2 is located at the front side of front side door frame 3, power drive mechanism 4 is connected with the cavity door subassembly 2 through transmission mechanism 5, power drive mechanism 4 drives the cavity door subassembly 2 to move through transmission mechanism 5, makes the cavity door subassembly 2 close / open the opening of cavity 1, the movement track of cavity door subassembly 2 is circular arc, and cavity door subassembly 2 always keeps parallel state relative to front side door frame 3 when moving.

[0027] The embodiment drives cavity door subassembly 2 to move through transmission mechanism 5 of power drive mechanism 4, realizes the automation of cavity door subassembly 2 to open / close the opening of cavity 1, effectively simplifies manual operation. Meanwhile, the movement track of cavity door subassembly 2 is circular arc, and cavity door subassembly 2 always keeps parallel state relative to front side door frame 3 when moving, so that the space range occupied by opening and closing door is small. And the overall structure of the embodiment is simple, can effectively reduce manufacturing cost.

[0028] Preferably, the transmission mechanism 5 includes a rotating shaft 50, a connecting shaft 52, a first connecting rod 51, a second connecting rod 53 and a support rod 54, the rotating shaft 50 is vertically rotatably installed on one side of the opening of the cavity 1, the connecting shaft 52 is vertically rotatably installed on the middle of the inner side of the cavity door subassembly 2, and the connecting shaft 52 is parallel to the rotating shaft 50, the rotating shaft 50 is connected with the power drive mechanism 4, and the power drive mechanism 4 drives the rotating shaft 50 to rotate.

[0029] The rotating shaft 50 is hinged with the connecting shaft 52 through the first connecting rod 51 and the second connecting rod 53 arranged in parallel, and a parallelogram structure is formed between the first connecting rod 51, the second connecting rod 53, the rotating shaft 50 and the connecting shaft 52; one end of the supporting rod 54 is rotatably connected to the middle of the lower portion of the opening of the cavity 1, and the other end of the supporting rod 54 is rotatably connected to the inner side of the cavity door assembly 2; the supporting rod 54 is parallel to the second connecting rod 53, and a parallelogram structure is formed between the supporting rod 54, the second connecting rod 53, the cavity 1 and the cavity door assembly 2.

[0030] In the embodiment, the rotating shaft 50 is driven by the power driving mechanism 4 to rotate, and the rotation of the rotating shaft 50 drives the first connecting rod 51 and the second connecting rod 53 to rotate; a parallelogram structure is formed between the first connecting rod 51, the second connecting rod 53, the rotating shaft 50 and the connecting shaft 52, and a parallelogram structure is formed between the supporting rod 54, the second connecting rod 53, the cavity 1 and the cavity door assembly 2; therefore, the movement of the first connecting rod 51, the second connecting rod 53 and the supporting rod 54 drives the cavity door assembly 2 to move, and the synchronous rotation of the supporting rod 54 causes the cavity door assembly 2 to close / open the opening of the cavity 1; the movement track of the cavity door assembly 2 is a circular arc, and the cavity door assembly 2 always keeps parallel to the front door frame 3 during the movement. In the embodiment, the stability of the movement process of the cavity door assembly 2 is effectively ensured under the action of the supporting rod 54.

[0031] In the embodiment, the power driving mechanism 4 preferably comprises a cylinder 40, a connecting seat 41, a rack 42 and a gear 43; the cylinder 40 is fixedly installed above the outer side wall of the cavity 1; the piston rod of the cylinder 40 is connected to the connecting seat 41; the connecting seat 41 is connected to the rack 42; the gear 43 is installed on the rotating shaft 50; and the rack 42 is engaged with the gear 43. Under the action of the cylinder 40, the connecting seat 41 and the rack 42 are driven to move linearly, the linear movement of the rack 42 drives the gear 43 to rotate, and the gear 43 is installed on the rotating shaft 50, so that the rotation of the gear 43 drives the rotating shaft 50 to synchronously rotate.

[0032] In the embodiment, the power driving mechanism 4 further comprises a guide assembly, which comprises a linear guide rail 44 and a guide groove provided on the connecting seat 41; the linear guide rail 44 is fixedly installed above the outer side wall of the cavity 1; the linear guide rail 44 is movably and cooperatively installed with the guide groove; and the linear guide rail 44 is parallel to the rack 42. Under the action of the linear guide rail 44 and the guide groove, the guide function of the linear movement of the connecting seat 41 and the rack 42 is realized, and the accuracy of the linear movement of the connecting seat 41 and the rack 42 is ensured.

[0033] The power driving mechanism 4 preferably further comprises two limiting blocks 45, the two limiting blocks 45 are arranged in parallel and the rack 42 is located between the two limiting blocks 45, and the two limiting blocks 45 are used for axial limiting of the rack 42.

[0034] The additive manufacturing equipment provided by the embodiment comprises the cavity automatic door structure.

[0035] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A cavity automatic door structure, the front side of the cavity (1) is provided with an opening, characterized in that, The cavity automatic door structure comprises a cavity door assembly (2), a front door frame (3), a power driving mechanism (4) and a transmission mechanism (5), the front door frame (3) is fixedly installed on the front side of the cavity (1), and the frame opening of the front door frame (3) is aligned with the opening; The power driving mechanism (4) and the transmission mechanism (5) are both installed on the cavity (1), the cavity door assembly (2) is located in front of the front door frame (3), the power driving mechanism (4) is connected with the cavity door assembly (2) through the transmission mechanism (5), the power driving mechanism (4) drives the cavity door assembly (2) to move through the transmission mechanism (5), so that the cavity door assembly (2) closes / open the opening of the cavity (1), the movement track of the cavity door assembly (2) is an arc, and the cavity door assembly (2) always keeps parallel with the front door frame (3) during movement.

2. The cavity automatic door structure according to claim 1, wherein The transmission mechanism (5) comprises a rotating shaft (50), a connecting shaft (52), a first connecting rod (51), a second connecting rod (53) and a supporting rod (54), the rotating shaft (50) is vertically rotatably installed on one side of the opening of the cavity (1), the connecting shaft (52) is vertically rotatably installed on the middle of the inner side of the cavity door assembly (2), and the connecting shaft (52) is parallel with the rotating shaft (50); the rotating shaft (50) is connected with the power driving mechanism (4), and the power driving mechanism (4) drives the rotating shaft (50) to rotate; The rotating shaft (50) is hingedly connected with the connecting shaft (52) through the first connecting rod (51) and the second connecting rod (53) arranged in parallel, and a parallelogram structure is formed between the first connecting rod (51), the second connecting rod (53), the rotating shaft (50) and the connecting shaft (52); One end of the supporting rod (54) is rotatably connected with the middle below the opening of the cavity (1), the other end of the supporting rod (54) is rotatably connected with the inner side of the cavity door assembly (2), the supporting rod (54) is parallel with the second connecting rod (53), and a parallelogram structure is formed between the supporting rod (54), the second connecting rod (53), the cavity (1) and the cavity door assembly (2).

3. The cavity automatic door structure according to claim 2, wherein The power driving mechanism (4) comprises a cylinder (40), a connecting seat (41), a rack (42) and a gear (43), the cylinder (40) is fixedly installed above the outer side wall of the cavity (1), the piston rod of the cylinder (40) is connected with the connecting seat (41), the connecting seat (41) is connected with the rack (42), and the gear (43) is installed on the rotating shaft (50), and the rack (42) is engaged with the gear (43).

4. The cavity automatic door structure according to claim 3, wherein The power driving mechanism (4) further comprises a guide assembly, the guide assembly comprises a linear guide rail (44) and a guide groove arranged on the connecting seat (41), the linear guide rail (44) is fixedly installed above the outer side wall of the cavity (1); the linear guide rail (44) is movably and cooperatively installed with the guide groove, and the linear guide rail (44) is parallel to the rack (42).

5. The cavity automatic door structure according to claim 3, wherein The power driving mechanism (4) further comprises limiting blocks (45), the number of the limiting blocks (45) is two, the two limiting blocks (45) are arranged in parallel and alternately, and the rack (42) is located between the two limiting blocks (45), and the two limiting blocks (45) are used for axial limiting of the rack (42).

6. An additive manufacturing apparatus, characterized by The cavity automatic door structure comprises the cavity (1) and the power driving mechanism (4).

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