Composite shielding workbench for selective laser sintering equipment

Abstract

The invention relates to the technical field of laser printing equipment, in particular to a composite shielding workbench for selective laser sintering equipment, which comprises a selective laser sintering equipment body, a storage frame, a shielding workbench, a laser, a telescopic tool, a height adjusting tool, a guide tool, a rotating tool and a non-magnetic panel, the position of the non-magnetic panel in the material storage frame is convenient to adjust through the arrangement of the telescopic tool, layer-by-layer sintering printing is convenient to realize, and the guide tool is arranged at the bottom end of the non-magnetic panel, so that the movement of the non-magnetic panel is more stable and accurate, and the sintering printing quality is improved; a height adjusting tool is arranged on the selective laser sintering equipment body, the height adjusting tool is convenient to adjust the distance between the material storage frame and the shielding workbench, and abrasion caused by sliding between the material storage frame and the shielding workbench is prevented; and after the parts in the material storage frame are printed, the rotating tool can conveniently drive the material storage frame to rotate, so that the parts and powder in the material storage frame are dumped and discharged, and the operation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of laser printing equipment, in particular to a composite shielding workbench used for laser selective sintering equipment. Background Art

[0002] The basic principle of laser selective sintering equipment is to use the principle of powder material sintering under laser irradiation, and to form layers by computer control. This technology uses a high-intensity CO2 laser under computer control to selectively sinter according to the layered contour of the part. After one layer is completed, the next layer is sintered until the part is formed. The implementation process is as follows: First, the material powder is spread on the upper surface of the formed part and flattened with a flattening roller. Then, the high-intensity CO2 laser scans the cross section of the part on the newly laid layer. The material powder is sintered together under high-intensity laser irradiation to form a cross section of the part and bonded to the formed part below. When one layer of cross section is sintered, a new layer of material powder is laid, compacted, and then the lower cross section is selectively sintered. This process is repeated layer by layer.

[0003] At present, a storage frame is set in the sintering area of ​​the workbench of the laser selective sintering equipment to store the sintered parts and powder. The non-magnetic panel inside the storage frame is driven up and down by a hydraulic cylinder to realize the layer-by-layer sintering of the powder on the non-magnetic panel. The accuracy and stability of the movement of the non-magnetic panel are particularly important for the quality of laser sintering. When the parts inside the storage frame are sintered, the storage frame needs to be slid out, and then the parts and powder inside the storage frame need to be taken out. The operation efficiency is low, and the storage frame slides horizontally to the bottom of the workbench, and there is long-term wear between the storage frame and the workbench, which easily produces a gap and affects the forming of the parts in the later stage. Therefore, a composite shielding workbench for laser selective sintering equipment is needed. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a composite shielding workbench for laser selective sintering equipment.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a composite shielding workbench for laser selective sintering equipment, comprising a laser selective sintering equipment body, a shielding workbench, a laser and a material storage frame are arranged inside the laser selective sintering equipment body, a non-magnetic panel is slidably arranged inside the material storage frame; the material storage frame is located at the bottom end of the shielding workbench, and the laser is located at the top end of the shielding workbench; a telescopic tool for driving the non-magnetic panel to move up and down is arranged inside the material storage frame, and a guide tool is arranged at the bottom end of the non-magnetic panel; A height adjustment tooling is provided inside the body of the laser selective sintering equipment for driving the material storage frame to move up and down, and the height adjustment tooling includes a support seat and a hydraulic cylinder; a support seat is fixed inside the body of the laser selective sintering equipment, a hydraulic cylinder is installed on the top of the support seat, a connecting rod is fixed on the bottom end of the hydraulic cylinder, and the connecting rod drives the rotating tooling to rotate; the rotating tooling drives the material storage frame to rotate.

[0006] Specifically, the rotating tooling includes a connecting seat and a rotating shaft. The connecting seat is fixed on the material storage frame, the rotating shaft is fixed on the connecting seat, driving disks are fixed at both ends of the rotating shaft, sliding grooves are opened on both sides of the support seat, the driving disk is slidably connected to the slider, the slider is slidably connected to the sliding groove, and connecting rods are fixed at the top ends of the two sliders.

[0007] Specifically, an angle adjustment shaft is fixed at the edge of the driving disk, a driving groove with a vertical top and an inclined bottom is provided on the support seat, and an angle adjustment shaft is fixed on the driving disk, and the angle adjustment shaft is slidably connected to the driving groove.

[0008] Specifically, the thickness of the driving disk is equal to the thickness of the slider, and the connecting rod is a quadrangular prism structure with a hollow interior.

[0009] Specifically, the telescopic tooling includes a threaded sleeve, a threaded sleeve is fixed to the bottom end of the non-magnetic panel, and a screw rod is connected to the internal thread of the threaded sleeve.

[0010] Specifically, the bottom end of the screw rod is fixed to the output shaft of the motor through a coupling, and the motor is arranged in the material storage frame.

[0011] Specifically, the motor is fixed to a support frame, and the support frame is fixed inside the material storage frame.

[0012] Specifically, the support frame is arranged in parallel with the non-magnetic panel, and the support frame is in a "cross" shape.

[0013] Specifically, the guide tooling includes a guide rod and a guide frame. The guide frame is fixed in the material storage frame. The guide frame is located at the top of the support frame. The guide rod is fixed at the bottom end of the non-magnetic panel. The guide rod is slidably connected to the guide frame.

[0014] Specifically, four guide rods are provided, and the four guide rods are arranged in a rectangular array at the bottom end of the non-magnetic panel.

[0015] Specifically, the guide frame is provided with a through hole, and the guide rod is fixed to the bottom end of the non-magnetic panel through a flange.

[0016] The beneficial effects of the present invention are: The composite shielding workbench for laser selective sintering equipment described in the present invention has a telescopic tooling that facilitates adjustment of the position of the non-magnetic panel in the material storage frame, thereby facilitating layer-by-layer sintering printing. A guide tooling is provided at the bottom end of the non-magnetic panel to make the movement of the non-magnetic panel more stable and accurate, thereby improving the quality of sintering printing.

[0017] The present invention discloses a composite shielding workbench for laser selective sintering equipment. A height adjustment tool is provided on the laser selective sintering equipment body. The height adjustment tool facilitates adjusting the distance between the material storage frame and the shielding workbench to prevent sliding between the material storage frame and the shielding workbench, thereby preventing wear.

[0018] The composite shielding workbench for laser selective sintering equipment described in the present invention has a rotating tooling between the height adjustment tooling and the material storage frame. After the parts inside the material storage frame are printed, the rotating tooling can drive the material storage frame to rotate, so that the parts and powder inside the material storage frame are dumped out, thereby improving the operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a composite shielding workbench for laser selective sintering equipment provided by the present invention; Figure 2 It is a schematic diagram of the connection structure between the shielding workbench and the laser selective sintering equipment body of the present invention; Figure 3 for Figure 1 An enlarged schematic diagram of the structure of section A is shown; Figure 4 A partial schematic diagram of the bottom end of the material storage frame of the present invention; Figure 5 It is a cross-sectional view of the material storage frame of the present invention; Figure 6 is a cross-sectional view of the height adjustment tool of the present invention; Figure 7 It is a schematic diagram of the connection structure between the material storage frame and the non-magnetic panel of the present invention; Figure 8 It is a schematic diagram of the exploded structure of the start disk and the slider of the present invention.

[0021] In the figure: 1. Laser selective sintering equipment body; 2. Material storage frame; 3. Shielding workbench; 4. Laser; 5. Telescopic tooling; 501. Motor; 502. Support frame; 503. Screw; 504. Threaded sleeve; 6. Height adjustment tooling; 601. Support seat; 602. Hydraulic cylinder; 603. Connecting rod; 604. Slide; 605. Drive slot; 7. Guide tooling; 701. Guide rod; 702. Guide frame; 703. Through hole; 8. Rotating tooling; 801. Angle adjustment shaft; 802. Rotating shaft; 803. Connecting seat; 804. Drive disk; 805. Slider; 9. Non-magnetic panel. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, a composite shielding workbench for laser selective sintering equipment described in the present invention comprises a laser selective sintering equipment body 1, wherein a shielding workbench 3, a laser 4 and a material storage frame 2 are arranged inside the laser selective sintering equipment body 1, and a non-magnetic panel 9 is slidably arranged inside the material storage frame 2; the material storage frame 2 is located at the bottom end of the shielding workbench 3, and the laser 4 is located at the top end of the shielding workbench 3; a telescopic tool 5 for driving the non-magnetic panel 9 to move up and down is arranged inside the material storage frame 2, and a guide tool 7 is arranged at the bottom end of the non-magnetic panel 9; The interior of the laser selective sintering equipment body 1 is provided with a height adjustment tool 6 for driving the material storage frame 2 to move up and down, and the height adjustment tool 6 includes a support seat 601 and a hydraulic cylinder 602; the interior of the laser selective sintering equipment body 1 is fixed with a support seat 601, and a hydraulic cylinder 602 is installed on the top of the support seat 601, and a connecting rod 603 is fixed to the bottom of the hydraulic cylinder 602, and the connecting rod 603 drives the rotating tool 8 to rotate; the rotating tool 8 drives the material storage frame 2 to rotate; the laser selective sintering equipment body 1 is provided with a height adjustment tool 6, and the height adjustment tool 6 is convenient for adjusting the distance between the material storage frame 2 and the shielding workbench 3 to prevent sliding between the material storage frame 2 and the shielding workbench 3 and causing wear.

[0024] Specifically, Figure 4-Figure 8As shown, the rotary tooling 8 includes a connecting seat 803 and a rotating shaft 802, the connecting seat 803 is fixed on the material storage frame 2, the rotating shaft 802 is fixed on the connecting seat 803, driving disks 804 are fixed at both ends of the rotating shaft 802, sliding grooves 604 are provided on both sides of the support seat 601, the driving disk 804 is slidably connected with the slider 805, the slider 805 is slidably connected with the sliding groove 604, the top ends of the two sliders 805 are fixed with a connecting rod 603, the edge of the driving disk 804 is fixed with an angle adjustment shaft 801, the support seat 601 is provided with a driving groove 605 with a vertical top end and an inclined bottom end, the driving disk 804 is fixed with an angle adjustment shaft 801, the angle adjustment shaft 801 is slidably connected with the driving groove 605, the thickness of the driving disk 804 is equal to the thickness of the slider 805, and the connecting rod 603 is a quadrangular prism structure with a hollow interior; When the parts processing is completed, the hydraulic cylinder 602 extends to drive the connecting rod 603 to move downward, and the connecting rod 603 drives the slider 805 to slide downward in the slide groove 604, and the slider 805 drives the driving disk 804 to move downward. At this time, the angle adjustment shaft 801 slides in the vertical section of the driving groove 605, and the driving disk 804 does not rotate. The driving disk 804 drives the rotating shaft 802, and the rotating shaft 802 drives the connecting seat 803 to move downward. The connecting seat 803 drives the material storage frame 2 to move downward, so that the material storage frame 2 is separated from the shielding workbench 3, and no friction is generated between the shielding workbench 3, thereby reducing wear; When the material storage frame 2 is completely separated from the shielding workbench 3, the shielding workbench 3 will not block the material storage frame 2 from rotating. At this time, the hydraulic cylinder 602 continues to extend to drive the connecting rod 603 to move downward, and the connecting rod 603 drives the slider 805 to slide downward in the slide groove 604, and the slider 805 drives the driving disk 804 to move downward. At this time, the angle adjustment shaft 801 slides in the inclined section of the driving groove 605, and the angle adjustment shaft 801 drives the driving disk 804 to rotate under the blocking effect of the driving groove 605, and the driving disk 804 drives the rotating shaft 802 to rotate, and the rotating shaft 802 drives the connecting seat 803 to rotate downward, and the connecting seat 803 drives the material storage frame 2 to rotate downward, so that the parts and powder in the material storage frame 2 are automatically dumped out, thereby improving the operating efficiency.

[0025] Specifically, Figure 3 , Figure 4 , Figure 5 and Figure 7As shown, the telescopic tooling 5 includes a threaded sleeve 504, a threaded sleeve 504 is fixed to the bottom end of the non-magnetic panel 9, a screw rod 503 is connected to the internal thread of the threaded sleeve 504, and the bottom end of the screw rod 503 is fixed to the output shaft of the motor 501 through a coupling, and the motor 501 is arranged in the storage frame 2, and the motor 501 is fixed to the support frame 502, and the support frame 502 is fixed to the inside of the storage frame 2, and the support frame 502 is arranged parallel to the non-magnetic panel 9, and the support frame 502 is in a "cross" structure; after one layer of sintering is completed, the motor 501 rotates clockwise, the motor 501 drives the screw rod 503 to rotate, and the screw rod 503 thread drives the threaded sleeve 504 to move downward, and the threaded sleeve 504 drives the non-magnetic panel 9 to descend according to the slicing height, and the horizontal roller flattens the powder again, and then starts the sintering of a new layer.

[0026] Specifically, Figure 5 and Figure 7 As shown, the guide tooling 7 includes a guide rod 701 and a guide frame 702. The guide frame 702 is fixed in the storage frame 2, and the guide frame 702 is at the top of the support frame 502. The guide rod 701 is fixed to the bottom end of the non-magnetic panel 9. The guide rod 701 is slidably connected to the guide frame 702. Four guide rods 701 are provided. The four guide rods 701 are arranged in a rectangular array at the bottom end of the non-magnetic panel 9. The guide frame 702 is provided with a through hole 703. The guide rod 701 is fixed to the bottom end of the non-magnetic panel 9 through a flange. During the descent of the non-magnetic panel 9, the guide rod 701 and the guide frame 702 are driven to slide, so that the stability of the movement of the non-magnetic panel 9 is better, and the quality of sintering printing is improved. The guide frame 702 is provided with a through hole 703, which reduces the dead weight of the guide frame 702.

[0027] When the present invention is in use, the powder is stored in the powder supply bins on both sides of the laser selective sintering equipment body 1. During printing, the powder is pushed onto the non-magnetic panel 9 by the powder spreading roller to form a very thin powder layer. The shielding workbench 3 is heated to a temperature lower than the melting temperature of the powder so that the laser can more easily solidify the parts. The scanning system allows the laser beam to pass through the laser 4 and irradiate the powder layer for selective scanning according to the designed two-dimensional CAD path of the slice. The scanned powder particles will be sintered together due to the high temperature of the laser focus to form a thin sheet with a certain thickness. After one layer of sintering is completed, the motor 501 rotates clockwise, the motor 501 drives the screw rod 503 to rotate, and the screw rod 503 thread drives the threaded sleeve 504 to move downward, and the screw The pattern sleeve 504 drives the non-magnetic panel 9 to descend according to the slice height, and the horizontal roller flattens the powder again, and then starts sintering a new layer; this process is repeated until all layers are sintered; in this process, the powder of the lower layer naturally becomes the support of the upper layer, so this process can manufacture any complex shape without other supporting structures; the motor 501 is fixed on the "cross" shaped support frame 502, which improves the heat dissipation effect and facilitates the full support of the motor 501; during the descent of the non-magnetic panel 9, the guide rod 701 and the guide frame 702 are driven to slide, so that the stability of the movement of the non-magnetic panel 9 is better, and the quality of sintering printing is improved. The guide frame 702 is provided with a through hole 703 to reduce the dead weight of the guide frame 702; When the parts processing is completed, the hydraulic cylinder 602 extends to drive the connecting rod 603 to move downward, and the connecting rod 603 drives the slider 805 to slide downward in the slide groove 604, and the slider 805 drives the driving disk 804 to move downward. At this time, the angle adjustment shaft 801 slides in the vertical section of the driving groove 605, and the driving disk 804 does not rotate. The driving disk 804 drives the rotating shaft 802, and the rotating shaft 802 drives the connecting seat 803 to move downward. The connecting seat 803 drives the material storage frame 2 to move downward, so that the material storage frame 2 is separated from the shielding workbench 3, and no friction is generated between the shielding workbench 3, thereby reducing wear; When the material storage frame 2 is completely separated from the shielding workbench 3, the shielding workbench 3 will not block the material storage frame 2 from rotating. At this time, the hydraulic cylinder 602 continues to extend to drive the connecting rod 603 to move downward, and the connecting rod 603 drives the slider 805 to slide downward in the slide groove 604, and the slider 805 drives the driving disk 804 to move downward. At this time, the angle adjustment shaft 801 slides in the inclined section of the driving groove 605, and the angle adjustment shaft 801 drives the driving disk 804 to rotate under the blocking effect of the driving groove 605, and the driving disk 804 drives the rotating shaft 802 to rotate, and the rotating shaft 802 drives the connecting seat 803 to rotate downward, and the connecting seat 803 drives the material storage frame 2 to rotate downward, so that the parts and powder in the material storage frame 2 are automatically dumped out, thereby improving the operating efficiency.

[0028] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A composite shielding workbench for laser selective sintering equipment, comprising a laser selective sintering equipment body (1), wherein a shielding workbench (3), a laser (4) and a material storage frame (2) are arranged inside the laser selective sintering equipment body (1), and a non-magnetic panel (9) is slidably arranged inside the material storage frame (2); the material storage frame (2) is located at the bottom end of the shielding workbench (3), and the laser (4) is located at the top end of the shielding workbench (3); characterized in that: A telescopic tool (5) for driving the non-magnetic panel (9) to move up and down is provided inside the material storage frame (2), and a guide tool (7) is provided at the bottom end of the non-magnetic panel (9); A height adjustment tool (6) for driving a material storage frame (2) to move up and down is provided inside the body (1) of the laser selective sintering equipment, and the height adjustment tool (6) comprises a support seat (601) and a hydraulic cylinder (602); a support seat (601) is fixed inside the body (1) of the laser selective sintering equipment, a hydraulic cylinder (602) is installed on the top of the support seat (601), a connecting rod (603) is fixed on the bottom of the hydraulic cylinder (602), and the connecting rod (603) drives a rotating tool (8) to rotate; and the rotating tool (8) drives the material storage frame (2) to rotate.

2. The composite shielding workbench for laser selective sintering equipment according to claim 1, characterized in that: The rotary tooling (8) comprises a connecting seat (803) and a rotating shaft (802); the connecting seat (803) is fixed on the material storage frame (2); the rotating shaft (802) is fixed on the connecting seat (803); driving disks (804) are fixed at both ends of the rotating shaft (802); sliding grooves (604) are provided on both sides of the support seat (601); the driving disk (804) is slidably connected to a slider (805); the slider (805) is slidably connected to the sliding groove (604); and connecting rods (603) are fixed at the top ends of the two sliders (805).

3. The composite shielding workbench for laser selective sintering equipment according to claim 2, characterized in that: An angle adjustment shaft (801) is fixed at the edge of the driving disk (804); a driving groove (605) with a vertical top and an inclined bottom is provided on the support seat (601); an angle adjustment shaft (801) is fixed on the driving disk (804); and the angle adjustment shaft (801) is slidably connected to the driving groove (605).

4. The composite shielding workbench for laser selective sintering equipment according to claim 2, characterized in that: The thickness of the driving disk (804) is equal to the thickness of the sliding block (805), and the connecting rod (603) is a quadrangular prism structure with a hollow interior.

5. The composite shielding workbench for laser selective sintering equipment according to claim 1, characterized in that: The telescopic tool (5) comprises a threaded sleeve (504), the bottom end of the non-magnetic panel (9) is fixed with the threaded sleeve (504), and the internal thread of the threaded sleeve (504) is connected to a screw rod (503).

6. The composite shielding workbench for laser selective sintering equipment according to claim 5, characterized in that: The bottom end of the screw rod (503) is fixed to the output shaft of the motor (501) via a coupling, and the motor (501) is arranged in the material storage frame (2).

7. The composite shielding workbench for laser selective sintering equipment according to claim 6, characterized in that: The motor (501) is fixed to a support frame (502), and the support frame (502) is fixed inside the material storage frame (2).

8. The composite shielding workbench for laser selective sintering equipment according to claim 7, characterized in that: The support frame (502) is arranged in parallel with the non-magnetic panel (9), and the support frame (502) is in a "cross"-shaped structure.

9. The composite shielding workbench for laser selective sintering equipment according to claim 7, characterized in that: The guide fixture (7) comprises a guide rod (701) and a guide frame (702); the guide frame (702) is fixed in the material storage frame (2); the guide frame (702) is located at the top end of the support frame (502); the guide rod (701) is fixed at the bottom end of the non-magnetic panel (9); the guide rod (701) is slidably connected to the guide frame (702).

10. The composite shielding workbench for laser selective sintering equipment according to claim 9, characterized in that: Four guide rods (701) are provided, and the four guide rods (701) are arranged in a rectangular array at the bottom end of the non-magnetic panel (9). A through hole (703) is provided on the guide frame (702), and the guide rods (701) are fixed to the bottom end of the non-magnetic panel (9) via a flange.

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