Protection device and method in separation process of metal 3D printing product and substrate

Abstract

The invention belongs to the technical field of additive manufacturing, and discloses a protection device in the separation process of a metal 3D printing product and a base plate, the protection device comprises connecting blocks arranged on the two sides of the base plate, a sliding rail, a sliding block, a supporting rod, a long rod, an I-level fixing clamp, an II-level fixing clamp and a product fixing assembly, the sliding block is connected with the connecting blocks through the sliding rail, the supporting rod is connected to the sliding block, and the product fixing assembly is connected to the sliding block through the long rod. The I-level fixing clamp is arranged on the supporting rod, the position and the angle of the I-level fixing clamp are adjustable in the axial direction of the supporting rod, the long rod is connected with the supporting rod through the I-level fixing clamp, the product fixing assembly is arranged on the long rod through the II-level fixing clamp or is directly arranged on the long rod, and the position and the angle of the II-level fixing clamp are adjustable in the axial direction of the long rod. The invention further discloses a using method of the device. The 3D printing product fixing device is used for fixing 3D printing products of different sizes and types, the situation that the products fall off and are damaged during linear cutting separation is avoided, and convenience, universality, safety, high efficiency and the like are integrated.

Description

Technical Field

[0001] The present invention belongs to the technical field of additive manufacturing, and relates to a protection device and method during the separation process of a metal 3D printed product and a substrate. Background Art

[0002] Metal 3D printing is the common name of metal additive manufacturing. In recent years, with the rapid development of metal additive manufacturing technology and the gradual improvement of technology maturity, metal additive manufacturing represented by selective laser melting, laser melting deposition, electron beam selective melting, arc wire feeding, etc. has become the mainstream manufacturing technology and has been widely applied in fields such as aerospace and energy power, showing a booming development trend.

[0003] Based on the process characteristics of additive manufacturing, the product is formed layer by layer from bottom to top on the substrate. The bottom layer of the product is metallurgically connected to the substrate, and the two need to be separated by means such as wire cutting to obtain the 3D printed product. As the current mainstream method for separating 3D printed products from the substrate, there is a risk of random dropping of 3D printed products during the cutting process, resulting in product damage or even cracking and scrapping. Therefore, workers need to closely monitor the cutting progress of the product and pick up the product about to drop in advance. In addition, for large 3D printed products, appropriate equipment needs to be selected according to the structural characteristics of the product to assist in cutting, increasing the complexity and controllability of the cutting process. If workers try to cut corners and misjudge the weight of the product and pick up the dropped product by hand, it is very easy to induce safety accidents and product scrapping. In addition, the substrate usually contains 3D printed products with multi-size structural characteristics, and the continuous dropping of products during the cutting process is likely to cause the cutting wire to get stuck or break, affecting the cutting progress. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a protection device and method during the separation process of a metal 3D printed product and a substrate, which is used to fix 3D printed products of different sizes and types, avoid product dropping damage during wire cutting separation, and combines convenience, versatility, safety, and high efficiency.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A protection device during the separation process of a metal 3D printed product and a substrate includes connection blocks, slide rails, sliders, support rods, long rods, Class-I fixing clips, Class-II fixing clips, and a product fixing component provided on both sides of the substrate. The slider is connected to the connection block through the slide rail. The support rod is connected to the slider. The Class-I fixing clip is provided on the support rod, and the axial position and angle of the Class-I fixing clip along the support rod are adjustable. The long rod is connected to the support rod through the Class-I fixing clip. The product fixing component is connected to the long rod through the Class-II fixing clip or directly provided on the long rod, and the axial position and angle of the Class-II fixing clip along the long rod are adjustable.

[0007] As a preferred method, the product fixing assembly includes a Class I product fixing assembly, a Class II product fixing assembly, a Class III product fixing assembly, and a Class IV product fixing assembly;

[0008] The Class I product fixing assembly includes a clamping block, a top block, and a support block. The clamping block is connected to a long rod, and its axial position and angle along the long rod are adjustable. The angle at the connection between the clamping block and the support block is adjustable. The support block and the top block are in threaded cooperation, and turning the top block generates a tightening force acting on the product;

[0009] The Class II product fixing assembly includes a magnetic block, an elastic band, and a clip. The magnetic block is connected to a long rod through a Class II fixing clip, and its axial position and angle along the long rod are adjustable. The end of the elastic band is snap-connected to the magnetic block, and the clip is connected to the magnetic block through the elastic band;

[0010] The Class III product fixing assembly includes a central rod, a support block, a connecting rod, and a force-applying block. Threads are arranged on the rod surface of the central rod. The force-applying block is connected to the central rod, and its axial position along the central rod is adjustable. The support block and the connecting rod are connected to the force-applying block, and the force-applying block drives the connecting rod to realize the opening and closing of the support block;

[0011] The Class IV product fixing assembly includes a support rod, a fastening chain, and a clamping plate. The support rod is connected to a long rod through a Class II fixing clip. The clamping plate is connected to the support rod, and the fastening chain acts on the clamping plate.

[0012] Further preferably, the long rod forms a truss structure in the space above the substrate.

[0013] Further preferably, multiple groups of the Class I product fixing assemblies are provided for fixing large additive products, and a rubber pad is provided at the end of the top block.

[0014] Further preferably, the magnetic block has strong magnetism and has a strong suction force on the clip, and a buffer rubber pad is provided on the disk surface of the magnetic block.

[0015] Further preferably, a rubber pad is provided on the end face of the support block.

[0016] Further preferably, a rubber pad is provided on the end face of the clamping plate, and a waist-shaped long through hole is provided on the clamping plate for arranging a binding band.

[0017] The present invention also discloses a method for using a protection device during the separation process of a metal 3D printing product from a substrate, including the following steps:

[0018] S1. Relatively install two connecting blocks on the long side surface of the substrate, hoist the substrate onto a cutting device for fixing, and adjust the cutting line to a position 0.5 - 2 mm above the upper surface of the substrate;

[0019] S2. Set support rods according to the product position distribution, and adjust the position of the Class I fixing clip on the support rods to fix the long rod;

[0020] S3. Determine the clamping positions and their distribution according to the structural characteristics of the product, install the product fixing components on the long rod, and fix the position of the product.

[0021] S4. Start the cutting equipment. The cutting wire moves parallel to the X-axis of the substrate and along the Y-axis direction to complete the cutting and separation of the product from the substrate.

[0022] As a preferred method, in step S3, after adjusting the top block to be close to the target clamping position of the product, tighten the top block to act on the product.

[0023] Place the central rod in the middle of the through cavity of the product, tighten the nut to act on the force-applying block so that the supporting blocks expand to act on the cavity wall of the through cavity, and realize the internal support fixation of the product.

[0024] According to the quantity and distribution of the products, install the corresponding number of elastic bands and clips on the disk surface of the magnetic block, and use the clips to clamp the products to realize the clamping fixation of the products.

[0025] Bring the two splints closer to each other and act on the additively manufactured products arranged in a single row. The splints are provided with a number of fastening chains. Tighten the fastening chains to make the splints gather together to realize the overall fastening of the single-row products.

[0026] Further preferably, step S4 further includes that after cutting, first disassemble the type-II product fixing components and recover the small array products adhering to the disk surface of the magnetic block; then use a lifting rope or other auxiliary tools to fix the medium and large-sized products, and sequentially remove the product fixing components and the long rod to recover the medium and large-sized additively manufactured products; finally, remove the support rod and the slider assembly and recover the substrate.

[0027] Based on the structural characteristics of the additively manufactured substrate, the present invention symmetrically assembles two connecting blocks on both sides of the long side of the substrate, and the other components cooperate with each other based on the connecting blocks. The cutting wire travels from one side of the long side of the connecting block, avoiding the movement interference between the metal wire and the protection device; a slide rail is assembled on the connecting block and cooperates with a number of sliders. The sliders can be fixed at any position along the slide rail, realizing the free movement and fixation of the protection device along the length direction (x) of the substrate; a support rod is assembled on the slide rail, and a fixed clamp is used to connect the two connecting blocks in the space above the substrate surface in cooperation with the long rod. Among them, the fixed clamp can be moved and fixed at any position along the axial direction of the support rod, realizing the free movement and fixation of the protection device along the height direction (z) of the substrate; the product fixing components are connected to the long rod through the fixed clamp or directly, and can be moved and fixed at any position along the axial direction of the long rod, realizing the free movement and fixation of the protection device in a certain height plane of the substrate.

[0028] The method of the present invention can comprehensively select a number of product fixing components according to elements such as the specific structure, size, weight and quantity of the product, and cooperate with components such as fixed clamps, support rods and long rods to realize the positioning at any position in the space on the upper surface of the substrate, fix the target product, prevent accidental dropping and damage during the separation process of the product from the substrate, and ensure the safety of the product and personnel.

[0029] The present invention has the following advantages:

[0030] (1) The present invention directly restricts the additive product, avoiding damage or even scrapping caused by random dropping of the additive product during the separation from the substrate.

[0031] (2) Workers do not need to constantly monitor the cutting state, greatly reducing the working intensity of workers and taking into account the safety of operation at the same time.

[0032] (3) The present invention realizes the positioning of the product clamping end at any position within a certain space on the substrate surface through the movement and fixation of the support rod along the slide rail direction, the movement and fixation of the first-class fixing clamp along the support rod direction and its rotational freedom, and the movement and fixation of the second-class fixing clamp along the long rod direction and its rotational freedom, achieving the clamping and fixation of additive products with different sizes, structures, and different numbers and arrangements in multiple working conditions, and having universality.

[0033] (4) The present invention can place an appropriate number of supporting rods, long rods, fixing clamps and other supporting components according to the characteristics of the additive product. All components have simple structures and only require the cooperation of two people to quickly complete the assembly and disassembly of the equipment, which can significantly improve work efficiency.

[0034] (5) The product fixing component of the present invention can be adapted to the arrangement working conditions of additive products with multiple sizes, structures and layouts such as large, medium, small, array arrangement and including through cavities, etc., and has high versatility. Description of the Drawings

[0035] Figure 1 is the working state diagram of the device of the present invention for separating large and small additive products from the substrate;

[0036] Figure 2 is the working state diagram of the device of the present invention for separating medium-sized additive products from the substrate;

[0037] Figure 3 is the schematic diagram of the cooperation relationship between the support rod and the slide rail;

[0038] Figure 4 is the schematic diagram of the relationship between the first-class fixing clamp and the support rod and the long rod;

[0039] Figure 5 is the schematic diagram of the relationship between the second-class fixing clamp and the product fixing component and the long rod;

[0040] Figure 6 is the structural schematic diagram of the first-class product fixing component;

[0041] Figure 7 is the structural schematic diagram of the second-class product fixing component;

[0042] Figure 8Schematic structural diagram of the fixing component for Class III products;

[0043] Figure 9 Schematic structural diagram of the fixing component for Class IV products.

[0044] In the figure: 1. Substrate; 2. Cutting line; 3. Additive product; 4. Connecting block; 5. Slide block; 6. Long rod; 7. Support rod; 8. Class-I fixing clip; 9. Slide rail; 10. Class-II fixing clip; 11. Fixing component for Class-I products; 11-1. Clamping block; 11-2. Top block; 11-3. Support block; 12. Fixing component for Class-II products; 12-1. Clip; 12-2. Elastic band; 12-3. Magnetic block; 13. Fixing component for Class-III products; 13-1. Central rod; 13-2. Support block; 13-3. Link rod; 13-4. Force-applying block; 14. Fixing component for Class-IV products; 14-1. Support rod; 14-2. Tightening chain; 14-3. Clamping plate. Specific implementation mode

[0045] The present invention will be described in detail below with reference to the accompanying drawings.

[0046] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] Embodiment:

[0048] Taking the clamping and protection during the cutting separation and recycling process of 1 large and 24 small additive products and 18 medium-sized array additive products on a 621 mm × 621 mm substrate as an example, a protection device during the separation process of a metal 3D printing product from the substrate includes a connecting block 4, a slide rail 9, a slide block 5, a support rod 7, a Class-I fixing clip 8, a Class-II fixing clip 10, a long rod 6, a fixing component 11 for Class-I products, a fixing component 12 for Class-II products, a fixing component 13 for Class-III products, and a fixing component 14 for Class-IV products.

[0049] Two connecting blocks 4 are designed based on the structure of the substrate 1 and are respectively fastened on both sides of the long side of the substrate 1. The remaining equipment components cooperate with the connecting block 4, and the cutting line 2 moves parallel along the Y-axis direction to divide the substrate 1 and the additive product 3, avoiding interference between the cutting line 2 and the components of the device.

[0050] The slide block 5 can move and be fixed at any position along the slide rail 9, ensuring that the cooperating components such as the support rod 7, the long rod 6, the fixing component 11 for Class-I products, the fixing component 12 for Class-II products, the fixing component 13 for Class-III products, and the fixing component 14 for Class-IV products can move and be fixed freely along the X-axis direction of the substrate 1. According to the structural characteristics, quantity and distribution of the additive product 3, 4 groups of slide blocks 5 are respectively arranged on both sides of the substrate 1 and placed opposite to each other, surrounding the additive product 3.

[0051] The first-class fixing clip 8 connects the support rod 7 and the long rod 6, so that the long rod 6 forms a truss structure in the space above the substrate 1. The first-class fixing clip 8 can move and be fixed at any position along the axial direction of the support rod 7, ensuring that the mating components such as the long rod 6, the fixing assembly 11 for type-I products, the fixing assembly 12 for type-II products, the fixing assembly 13 for type-III products, and the fixing assembly 14 for type-IV products can move and be fixed freely along the Z-axis direction of the substrate 1. At the same time, the first-class fixing clip 8 can rotate and be fixed at any angle along the axial direction of the support rod 7 and the axial direction of the long rod 6, and the connection position can also rotate and be fixed at any angle. For the two working conditions of 1 large and 24 small and medium-sized arrays, 9 or 2 long rods 6 can be connected respectively through the above structure to approach and surround various types of additive products 3.

[0052] The second-class fixing clip 10 connects the long rod 6 and various product fixing components or another long rod 6, and can move and be fixed at any position along the axial direction of the clamping rod. At the same time, the second-class fixing clip 10 can rotate and be fixed at any angle along the axial direction of the clamping rod, and the connection position can also rotate and be fixed at any angle. For the working condition of 1 large and 24 small, 1 set of type-III product fixing components 13 can be connected at an appropriate position through the above structure to act on the large additive product 3, and 2 sets of type-II product fixing components 12 can act on the small additive product 3. For the medium-sized array working condition, 3 sets of type-IV product fixing components are connected to act on the medium-sized array additive product 3.

[0053] The fixing assembly 11 for type-I products is suitable for clamping and fixing large additive products 3, including a clamping block 11-1, a top block 11-2, and a support block 11-3. Among them, the clamping block 11-1 is connected to the long rod 6 and can move and be fixed at any position along the axial direction of the rod, and rotate and be fixed at any angle. At the same time, the connection position between the clamping block 11-1 and the support block 11-3 can also rotate and be fixed at any angle. The above structure can expand the flexibility of the fixing assembly 11 for type-I products in space. The support block 11-3 and the top block 11-2 are in threaded cooperation, and turning the top block 11-2 generates a tightening force acting on the additive product 3. In addition, a rubber pad is provided at the end of the top block 11-2, which can increase the friction force when clamping and fixing to improve the fastening effect on the additive product 3, and at the same time protect the additive product 3. The overall fixation of the product is achieved by applying a holding force through 4 sets of fixing assemblies 11 for type-I products respectively on the upper and lower parts of the large additive product 3.

[0054] The Class II product fixing component 12 is applicable to the clamping and fixing of small array additive products 3, and includes a magnetic block 12-3, an elastic band 12-2, and a clip 12-1. Among them, the magnetic block 12-3 has multiple size specifications, and can be preferably selected according to the arrangement characteristics of the small additive product 3. The end of the elastic band 12-2 is connected to the magnetic block 12-3 by a buckle, which is convenient for arranging the clip 12-1 according to the quantity and distribution of the additive product 3. The magnetic block 12-3 has strong magnetism, has a strong suction force on the clip 12-1, and a buffer rubber pad is arranged on the disk surface of the magnetic block 12-3. After cutting, the clip 12-1 clamps the additive product 3 and adheres to the disk surface of the magnetic block 12-3 to realize the recycling of the small additive product 3.

[0055] The Class III product fixing component 13 is applicable to the internal support fixing of medium and large-sized additive products 3 with a through cavity structure, and includes a central rod 13-1, a support block 13-2, a connecting rod 13-3, and a force application block 13-4. Threads are arranged on the rod surface of the central rod 13-1, and the force application block 13-4 moves along the axial direction of the central rod 13-1, driving the connecting rod 13-3 to realize the opening and closing of the support block 13-2. By applying a tightening force to the force application block 13-4 through a nut, the support block 13-2 is closely attached to the inner cavity surface of the medium and large-sized additive product 3 to realize internal support fixing. In addition, a rubber pad is arranged on the end face of the support block 13-2, which can increase the contact friction with the additive product 3 and also has a protective effect.

[0056] The Class IV product fixing component 14 is applicable to the clamping and fixing of medium-sized array additive products 3, and includes a support rod 14-1, a fastening chain 14-2, and a clamping plate 14-3. The support rod 14-1 is connected to the long rod 6 through a Class II fixing clip 10. The two clamping plates 14-3 relatively contact the array additive product 3, and multiple groups of fastening chains 14-2 are arranged at appropriate positions to act on the clamping plates 14-3 to tightly clamp the additive product 3 to realize fixation. In addition, a rubber pad is arranged on the end face of the clamping plate 14-3, which can increase the contact friction with the additive product 3 and also has a protective effect. For the medium-sized array working condition with an arrangement of 3 rows and 6 columns, 3 groups of Class IV product fixing components 14 are respectively set for each row to realize the overall fixation of the product.

[0057] The usage method of the above protection device is as follows:

[0058] S1: The slide rail 9 is tightly screwed to the connecting block 4, and the two connecting blocks 4 are oppositely installed on the long side surface of the substrate 1. The substrate 1 is hoisted onto the cutting equipment for fixation, and the cutting wire 2 is adjusted to a position 0.5 - 2 mm above the upper surface of the substrate 1.

[0059] S2: The support rod 7 is tightly screwed to the slider 5. According to the distribution characteristics of the additive product 3 on the substrate 1, for the two working conditions of 1 large and 24 small and medium-sized arrays, 4 sliders 5 are respectively arranged at appropriate positions on the slide rail 9 and placed opposite to each other on both sides of the substrate 1. Ensure that in the final state, the distributed support rods 7 and the long rods 6 can allocate 16 groups of type I product fixing components 11 for the large additive product 3; facilitate the clamping of the small and medium-sized array additive products 3 by the type II product fixing components 12 and the type IV product fixing components 14; at the same time, facilitate the type III product fixing components 13 to extend into the through cavity of the medium and large additive products 3 to achieve internal support fixation.

[0060] S3: According to the layout characteristics of the additive product 3 under the working condition of 1 large and 24 small, two groups of grade I fixing clips 8 are arranged on each support rod 7, one at a low position and one at a high position. Select 2 long rods 6 and respectively install 4 grade II fixing clips 10 and 2 type I product fixing components 11 on them; select another 2 long rods 6 and respectively install 3 grade II fixing clips 10 and 2 type I product fixing components 11 on them; then select 5 long rods 6, 4 of which are respectively installed with 2 type I product fixing components 11, and the last one is installed with 1 grade II fixing clip 10, and they are connected to surround the additive product 3. For the medium-sized array working condition, one group of grade I fixing clips 8 is arranged at an appropriate position on each support rod 7, and 2 long rods 6 are selected and respectively installed with 6 grade II fixing clips 10 to connect 3 groups of type VI product fixing components 14 to surround the additive product 3.

[0061] S4: Based on the distribution of each clamping position of the large additive product 3, adjust each type I product fixing component 11 so that the top block 11-2 is close to the target clamping position of the additive product 3, and then tighten the top block 11-2 to act on the additive product 3. For the through cavity structure existing in the large additive product 3, arrange one group of type III product fixing components 13 through the grade II fixing clip 10 so that the central rod 13-1 is placed in the middle of the through cavity, and tighten the nut to act on the force application block 13-4 to make the support block 13-2 expand and act on the cavity wall, finally realizing the internal support fixation of the large additive product 3.

[0062] S5: Based on the position distribution of the small array additive products 3, adjust the positions and rotation angles of the two grade II fixing clips 10 on the long rod 6. Install 12 groups of elastic bands 12-2 and clips 12-1 in appropriate areas on the disk surfaces of the two magnetic blocks 12-3. Install and connect two groups of type II product fixing components 12 to the grade II fixing clips 10, and use the clips 12-1 to clamp the appropriate positions of the products to achieve the clamping of each small additive product 3.

[0063] S6: Based on the position distribution of the medium-sized array additive products 3, adjust the positions and respective rotation angles of the six Class-II fixing clamps 10 on the long rod 6, so that the six clamping plates 14-3 approach each other in pairs and act on the additive products 3 arranged in three rows respectively. Three fastening chains 14-2 are respectively arranged at appropriate positions of each pair of clamping plates 14-3. Tighten the fastening chains 14-2 to make the acting clamping plates 14-3 gather together, so as to realize the overall fastening of the additive products 3 in three rows.

[0064] S7: Start the cutting equipment. The cutting line 2 moves in the direction parallel to the X-axis and along the Y-axis to complete the cutting and separation of the additive product 3 and the substrate 1.

[0065] S8: After cutting, first disassemble the Class-II product fixing assembly 12 and recover the small-sized array additive products 3 adhered to the disk surface of the magnetic blocks 12-3; then use a lifting rope or other auxiliary tools to fix the medium and large-sized additive products 3, and sequentially disassemble various product fixing assemblies and the long rod 6 to recover the medium and large-sized additive products 3; finally, disassemble the support rod 7 and the slider 5 assembly and recover the substrate 1, thus completing the whole process of separating the additive product 3 and the substrate 1.

[0066] The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature disclosed in this specification or any new combination thereof, as well as any new method or process step disclosed or any new combination thereof.

Claims

1. A protective device for separating a metal 3D printed product from a substrate, characterized in that: It includes connecting blocks, slide rails, sliders, support rods, long rods, level I fixing clamps, level II fixing clamps, and product fixing components arranged on both sides of the base plate. The sliders are connected to the connecting blocks through slide rails, the support rods are connected to the sliders, the level I fixing clamps are arranged on the support rods, and the level I fixing clamps are adjustable in axial position and angle along the support rods. The long rods are connected to the support rods through the level I fixing clamps, and the product fixing components are arranged on the long rods through the level II fixing clamps or directly, and the level II fixing clamps are adjustable in axial position and angle along the long rods.

2. The protective device for separating a metal 3D printed product from a substrate according to claim 1, characterized in that: The product fixing components include Class I product fixing components, Class II product fixing components, Class III product fixing components and Class IV product fixing components; The Class I product fixing assembly includes a clamp block, a top block, and a support block. The clamp block is connected to a long rod, and the axial position and angle along the long rod are adjustable. The angle at the connection between the clamp block and the support block is adjustable. The support block and the top block are threadedly matched, and the top block is twisted to generate a tightening force to act on the product. The Class II product fixing assembly includes a magnetic block, an elastic band, and a clip. The magnetic block is connected to the long rod through a Class II fixing clip, and the axial position and angle along the long rod are adjustable. The end of the elastic band is buckled with the magnetic block, and the clip is connected to the magnetic block through the elastic band. The Class III product fixing assembly includes a center rod, a support block, a connecting rod, and a force block. The center rod surface is provided with threads, the force block is connected to the center rod, and the force block is adjustable along the axial position of the center rod. The support block and the connecting rod are connected to the force block, and the force block is linked to the connecting rod to realize the opening and closing of the support block. The Class IV product fixing assembly includes a support rod, a tightening chain, and a splint. The support rod is connected to the long rod via a Class II fixing clamp, the splint is connected to the support rod, and the tightening chain acts as the splint.

3. A protective device for separation of a metal 3D printed product from a substrate according to claim 1 or 2, characterized in that: The long rods form a truss structure in the space above the base plate.

4. The protective device for separating a metal 3D printed product from a substrate according to claim 2, characterized in that: The Class I product fixing assembly is provided with multiple groups for fixing large additive products, and rubber pads are provided at the ends of the top blocks.

5. The protective device for separating a metal 3D printed product from a substrate according to claim 2, characterized in that: The magnetic block has strong magnetism and has strong suction force on the clip, and a buffer rubber pad is arranged on the disk surface of the magnetic block.

6. The protective device for separating a metal 3D printed product from a substrate according to claim 2, characterized in that: A rubber pad is arranged on the end surface of the support block.

7. The protective device for separating a metal 3D printed product from a substrate according to claim 2, characterized in that: The end surface of the clamping plate is provided with a rubber pad, and the clamping plate is provided with a waist-shaped long through hole for arranging a restraining belt.

8. A method for using the protective device in the process of separating the metal 3D printed product from the substrate according to any one of claims 1 to 7, characterized in that: The steps include: S1. Install two connecting blocks opposite to each other on the long side surface of the substrate, hoist the substrate onto the cutting equipment for fixation, and adjust the cutting line to the position 0.5-2mm from the upper surface of the substrate; S2. Set the support rod according to the product location distribution, and adjust the level I fixing clamp to fix the long rod at the position of the support rod; S3. Determine the clamping position and distribution according to the structural characteristics of the product, install the product fixing components on the long rod, and fix the product position; S4, start the cutting equipment, the cutting line is parallel to the X-axis direction of the substrate and moves along the Y-axis direction to complete the cutting and separation of the product and the substrate.

9. The method for using the protective device during separation of a metal 3D printed product from a substrate according to claim 8, characterized in that: In the step S3, after adjusting the top block to be close to the target clamping position of the product, tighten the top block to act on the product; Place the center rod in the middle of the product's cavity, tighten the nut to act on the force block so that the support block can expand and act on the cavity wall of the cavity to achieve internal support fixation of the product; According to the quantity and distribution of products, a corresponding number of elastic bands and clips are installed on the disk of the magnetic block, and the products are clamped by the clips to achieve product clamping; Bring two splints close together and act on the additive products arranged in a single row. Set a number of fastening chains on the splints, and pull the fastening chains to bring the splints together to achieve overall fastening of the single row of products.

10. The method for using the protective device during separation of a metal 3D printed product from a substrate according to claim 8 or 9, characterized in that: The step S4 also includes, after the cutting is completed, first dismantling the Class II product fixing components to recover the small array products adhered to the disk surface of the magnetic block; then using a lifting rope or other auxiliary tools to fix the medium and large products, and removing the product fixing components and long rods in turn to recover the medium and large additive products; finally, removing the support rod and slider assembly to recover the substrate.

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