SLM (selective laser melting) forming part density detection device

Abstract

The utility model provides a density detection device for an SLM (selective laser melting) forming part. The density detection device comprises a conveying belt, a mounting plate is mounted on the conveying belt, a lifting rod is fixedly mounted on the mounting plate, a rotating column is mounted at the top end of the lifting rod, a fixed arm is mounted at the top end of the rotating column, a fixed suction cup is mounted on the fixed arm, and a density detector is arranged between the conveying belt. According to the density detection device for the SLM forming part, the SLM forming part can be fixed in the working process, it is guaranteed that the SLM forming part is stably fed into detection equipment, the SLM forming part is prevented from sliding off, detection work can be continuously carried out, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of density testing devices, and more specifically, to a density testing device for SLM molded parts. Background Technology

[0002] SLM (Surface Mount Laser) is a promising 3D printing technology for metal parts. SLM molding materials are mostly single-component metal powders, including austenitic stainless steel, nickel-based alloys, titanium-based alloys, cobalt-chromium alloys, and precious metals. A laser beam rapidly melts the metal powder to obtain continuous melt channels, directly producing nearly dense metal parts of almost any shape with complete metallurgical bonding and high precision. Its applications have expanded to aerospace, microelectronics, medical, and jewelry industries. After SLM molding, density testing is required, which uses density testing instruments. Currently, density testing of SLM moldings typically involves workers manually placing the moldings into the instrument. This method involves direct contact with the moldings, which can easily cause surface contamination, and placing them directly into the machine poses certain risks.

[0003] Regarding the aforementioned issues, concerning the technical problems of workers manually placing SLM molded parts into density testing instruments, which easily leads to surface contamination and poses certain dangers when directly placing them into the machine, extensive research revealed a structure with patent number CN217638527U. This structure includes a control box, a support platform mounted on the top of the control box via a connecting column, a density tester electrically connected to the control box mounted on the support platform, a support frame fixed to one end of the top of the control box, a pulling component mounted on the support frame, and a motor fixed to the top of the control box. The motor, through the pulling component, drives the SLM molded part body placed on a support plate into the density tester for density testing. However, the technical solution provided by this patent has the following problems:

[0004] (1) When the SLM molded part is placed on the carrier plate and sent into the testing device for testing, the SLM molded part cannot be fixed. Furthermore, the carrier plate of the device is connected to the transmission mechanism by a steel wire rope, which makes it easy to shake when transporting the SLM molded part, making it impossible for the SLM molded part to be sent into the testing device normally. At the same time, there is no fixing device on the carrier plate, and the SLM molded part may slip off the carrier plate.

[0005] (2) After the device completes one test, the SLM molded part needs to be removed from the carrier plate, and then a new SLM molded part needs to be placed on the carrier plate for testing. It cannot perform continuous testing. When there are a large number of SLM molded parts to be tested, the device takes a long time to complete the testing and has low efficiency. Utility Model Content

[0006] The present invention aims to solve the technical problems mentioned in the background art and provide a density detection device for SLM molded parts. During the operation, the device can fix the SLM molded parts, ensure that the SLM molded parts are stably fed into the detection equipment, prevent the SLM molded parts from slipping, and can perform continuous detection work.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a density testing device for SLM molded parts, comprising: a conveyor belt on which an mounting plate is installed, a lifting rod fixedly installed on the mounting plate, a rotating column installed at the top of the lifting rod, a fixed arm installed at the top of the rotating column, a fixed suction cup installed on the fixed arm, and a density tester arranged between the conveyor belts.

[0008] A further preferred embodiment: The fixing arm includes a fixing block, the bottom end of which is fixedly installed on the top of the rotating column. A connecting arm is installed on one side of the fixing block, a connecting rod is installed on the connecting arm, a telescopic rod is installed at the front end of the connecting rod, a connecting piece is fixedly installed on the telescopic rod, a connecting block is installed between the connecting pieces, and an installation groove is installed at the front end of the connecting block, in which a fixing clamp is installed.

[0009] A further preferred embodiment: The center of the fixing block has a through circular groove, a connecting shaft is installed in the groove, and a connecting arm is installed on the connecting shaft. At this time, the connecting arm is located on one side of the fixing block, and limit blocks are provided at both ends of the connecting shaft.

[0010] A further preferred embodiment: A connecting post is provided on one side of the connecting rod, and the connecting rod is installed on the upper end of the connecting arm through the connecting post.

[0011] A further preferred embodiment: both sides of the connecting block are provided with cylindrical protrusions, the connecting piece is installed on the cylindrical protrusions of the connecting block, and the front end of the connecting block is cylindrical.

[0012] A further preferred embodiment: the fixed suction cup includes a vacuum suction cup, with an installation cylinder fixedly installed at the top of the vacuum suction cup, and an adjustment block sleeved on the installation cylinder.

[0013] A further preferred embodiment: the density detector includes a detector body, a support column is fixedly installed at the bottom of the detector body, a base is fixedly installed at the bottom of the support column, and a protective ring is sleeved on the outer edge of the detector body.

[0014] Beneficial effects:

[0015] 1. By setting up a fixed suction cup, the SLM component can be fixed in place, which can stably transport the SLM molded part to the SLM inspection instrument body for inspection. This can effectively prevent the SLM molded part from slipping during the inspection process, so that the inspection work can be completed more stably.

[0016] 2. By setting up multiple sets of fixed arms and conveyor belts, when there are a large number of SLM molded parts to be tested, multiple SLM molded parts can be fixed on the fixed arms at the same time, and then transported to the testing instrument body by the conveyor belt. This enables continuous SLM molded part density testing, which greatly improves work efficiency.

[0017] 3. By adjusting and coordinating the components on the fixed arm, the fixing requirements of SLM molded parts of different sizes and shapes can be met, and the work can still be completed efficiently under different working conditions;

[0018] 4. In summary, this SLM molding density testing device, with its fixed arm, fixed suction cup, and conveyor belt, can firmly hold the SLM molding and stably feed it into the testing instrument for testing, increasing the stability of the operation. It also allows for continuous testing, greatly improving work efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the fixed arm structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the fixed suction cup structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the density detector of this utility model.

[0023] Figure 1-4 In the middle: 1. Conveyor belt; 2. Fixed arm; 201. Fixed block; 202. Connecting arm; 203. Connecting rod; 204. Telescopic rod; 205. Connecting piece; 206. Connecting block; 207. Mounting groove; 208. Fixing clamp; 3. Fixed suction cup; 301. Vacuum suction cup; 302. Mounting cylinder; 303. Adjusting block; 4. Density detector; 401. Detector body; 402. Support column; 403. Base; 5. Mounting plate; 6. Lifting rod; 7. Rotating column. Detailed Implementation

[0024] The following will refer to the appendix in the embodiments of this utility model. Figures 1-4 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0025] Please see Figure 1-4In this embodiment of the present invention, a density testing device for SLM molded parts includes a conveyor belt 1, an mounting plate 5 installed on the conveyor belt 1, a lifting rod 6 fixedly installed at the top of the mounting plate 5, a rotating column 7 installed at the top of the lifting rod 6, a fixed arm 2 fixedly installed at the top of the rotating column 7, a fixed suction cup 3 installed on the fixed arm 2, and a density tester 4 arranged between the conveyor belts 1.

[0026] In this embodiment of the utility model, the fixing arm 2 includes a fixing block 201. The bottom end of the fixing block 201 is fixedly installed on the top end of the rotating column 7. A connecting arm 202 is installed on one side of the fixing block 201. A connecting rod 203 is installed on the connecting arm 202. A telescopic rod 204 is installed at the front end of the connecting rod 203. A connecting piece 205 is fixedly installed on the telescopic rod 204. A connecting block 206 is installed between the connecting pieces 205. An installation groove 207 is installed at the front end of the connecting block 206. A fixing clamp 208 is installed in the installation groove 207. By adjusting the fixing arm 2, the fixing requirements of SLM molded parts of different sizes and shapes can be met, and the inspection work can be better completed.

[0027] In this embodiment of the utility model, a through circular groove is opened in the center of the fixing block 201, and a connecting shaft is installed in the groove. The connecting arm 202 is installed on the connecting shaft. At this time, the connecting arm 202 is located on one side of the fixing block 201. Limiting blocks are provided at both ends of the connecting shaft. The connecting arm 202 can rotate around the connecting shaft to adjust the front and rear positions of the fixing clamp 208, so as to meet the fixing requirements of SLM molding parts of different sizes. At the same time, the limiting blocks can prevent the connecting arm 203 from falling off the fixing block 201 and make the fixing block 201 and the connecting arm 202 close together, increasing the friction between the fixing block 201 and the connecting arm 202, so that after the connecting arm 202 is adjusted, the connecting arm 202 will not rotate in subsequent work.

[0028] In this embodiment of the utility model, a connecting post is provided on one side of the connecting rod 203. The connecting rod 203 is installed on the upper end of the connecting arm 202 through the connecting post. The connecting rod 203 can rotate in the vertical plane with the connecting post as the axis. In coordination with the movement of the connecting arm 202, the position of the fixing arm 2 can be adjusted to adapt to different fixing work requirements.

[0029] In this embodiment of the utility model, cylindrical protrusions are provided on both sides of the connecting block 206, and the connecting piece 205 is installed on the cylindrical protrusions of the connecting block 206. The front end of the connecting block 206 is cylindrical, so that the connecting block 206 can rotate around the cylindrical protrusions as an axis. At the same time, the mounting groove 207 can rotate around the front end of the connecting block 206 with the connecting block 206 as an axis, adjusting the angle of the fixing clamp 208 to meet the fixing requirements of SLM molded parts of different shapes.

[0030] In this embodiment of the utility model, the fixed suction cup 3 includes a vacuum suction cup 301, and an installation cylinder 302 is fixedly installed on the top of the vacuum suction cup 301. An adjustment block 303 is sleeved on the installation cylinder 302. The fixing clamp 208 fixes the fixed suction cup 3 to the installation arm 2 between the upper and lower adjustment blocks 303. Adjusting the adjustment block 303 can make the adjustment block 303 clamp the fixing clamp.

[0031] In this embodiment of the present invention, the density detector 4 includes a detector body 401, a support column 402 is fixedly installed at the bottom of the detector body 401, a base 403 is fixedly installed at the bottom of the support column 402, and a protective ring is sleeved on the outer edge of the detector body 401.

[0032] Working principle: First, the fixed suction cup 3 is attached to a suitable position on the SLM molded part. Then, the fixed arm 2 is adjusted to a suitable position and angle. Next, the fixed suction cup 3 with the SLM molded part attached is installed on the fixing clamp 208 of the fixed arm 2. The adjusting block 303 is adjusted to clamp the fixing clamp 208. After several sets of SLM molded parts are fixed, the conveyor belt 1 is started. When the conveyor belt 1 transports the SLM molded parts to the density detector 4, the conveyor belt 1 stops working, the lifting rod 6 descends, and the SLM molded parts enter the detector body 401 for detection. After the detection is completed, the detection result will be transmitted to the external display device. Then the lifting rod 6 rises, the conveyor belt 1 operates, and the next set of SLM molded parts is detected.

Claims

1. An SLM formed part density of compaction detection apparatus comprising: Transmission belt (1) characterized in that: the transmission belt (1) is installed on the mounting plate (5), the mounting plate (5) is fixedly installed with lifting rod (6), the lifting rod (6) top end is installed with rotating column (7), the rotating column (7) top end is installed with fixed arm (2), the fixed arm (2) is installed with fixed suction cup (3), the transmission belt (1) is provided with density detector (4).

2. A device for detecting the density of a shaped SLM part according to claim 1, characterized in that: The fixed arm (2) includes a fixed block (201), and the fixed block (201) is fixedly installed at the top end of the rotating column (7). One side of the fixed block (201) is provided with a connecting arm (202), and the connecting arm (202) is provided with a connecting rod (203). The front end of the connecting rod (203) is provided with a telescopic rod (204), and the telescopic rod (204) is fixedly provided with a connecting piece (205). The connecting piece (205) is provided with a connecting block (206), and the front end of the connecting block (206) is provided with a mounting groove (207). The mounting groove (207) is provided with a fixed clamp (208).

3. A device for determining the density of a shaped SLM part according to claim 2, characterized in that The fixed block (201) is provided with a through circular groove in the center, and the connecting shaft is installed in the circular groove. The connecting arm (202) is installed on the connecting shaft, and the connecting arm (202) is located on one side of the fixed block (201) at this time. The connecting shaft is provided with a limiting block at both ends.

4. The apparatus of claim 2, wherein: The connecting rod (203) is provided with a connecting column on one side, and the connecting rod (203) is installed on the upper end of the connecting arm (202) through the connecting column.

5. The apparatus of claim 2, wherein: The connecting block (206) is provided with a cylindrical protrusion on both sides, and the connecting piece (205) is installed on the cylindrical protrusion of the connecting block (206). The front end of the connecting block (206) is cylindrical.

6. The apparatus of claim 1, wherein: The fixed suction cup (3) includes a vacuum suction cup (301), and the top end of the vacuum suction cup (301) is fixedly provided with a mounting cylinder (302). The mounting cylinder (302) is provided with an adjusting block (303).

7. The apparatus of claim 1, wherein: The density detector (4) includes a detector body (401), and the bottom end of the detector body (401) is fixedly provided with a supporting column (402). The bottom end of the supporting column (402) is fixedly provided with a base (403), and the outer edge of the detector body (401) is provided with a protection ring.

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