Combined type loading and unloading tool for scraper assembly

Abstract

The utility model belongs to the field of 3D printing, and relates to a scraper assembly combined type assembling and disassembling tool which comprises a first assembling and disassembling tool part, and the first assembling and disassembling tool part comprises a supporting seat, a connecting bolt and a fixing base. The supporting seat is vertically arranged on the fixed base; the connecting bolt penetrates through the supporting base in the radial direction of the supporting base and then is connected with the to-be-loaded-and-unloaded scraper assembly. The combined type assembling and disassembling tool for the scraper assembly is safe, rapid and convenient to assemble and disassemble.

Description

Technical Field

[0001] The utility model belongs to the field of 3D printing, and relates to a loading and unloading tool, in particular to a scraper assembly combined loading and unloading tool. Background Art

[0002] Additive Manufacturing (AM) is an advanced manufacturing technology with distinctive features such as digital manufacturing, high flexibility and adaptability, direct CAD model drive, fast speed, and rich and diverse material types. Since it is not limited by the complexity of part shapes and does not require any tooling, it has a very wide range of applications. Selective Laser Melting (SLM) is one of the additive manufacturing technologies that has developed rapidly in recent years. It uses powder materials as raw materials and uses lasers to scan the cross-section of three-dimensional entities layer by layer to complete prototype manufacturing. It is not limited by the complexity of part shapes and does not require any tooling, so it has a wide range of applications. The basic process of selective laser melting technology is: the powder feeding device delivers a certain amount of powder to the workbench, the powder spreading device spreads a layer of powder material on the upper surface of the formed part in the forming cylinder, and the galvanometer controls the laser to scan the solid part of the powder layer according to the cross-sectional contour of the layer, so that the temperature of the powder rises to the melting point, and the powder melts and sintered to achieve bonding with the formed part below; when a layer of cross section is sintered, the workbench drops one layer of thickness, and the powder spreading device spreads a layer of uniform and dense powder on it, and scans and sinters a new layer of cross section, and after several layers of scanning and superposition, the entire three-dimensional solid manufacturing is completed.

[0003] At present, scrapers are commonly used components of powder spreading devices, and the accuracy of their bottom surfaces plays a vital role in the entire three-dimensional object manufacturing. The scraper needs to move repeatedly for a long time during the powder spreading process. The bottom surface of the scraper is in direct contact, friction, and even collision with the powder and sintered surface, which is very easy to cause scratches and wear, and thus requires frequent replacement. The scraper components (including steel scrapers and scraper pressure plates) used in the large-format metal 3D printing process are heavy and have cutting edges. They are difficult to load and unload, and the installation conditions in limited spaces are harsh. There are major safety hazards during the disassembly and assembly of scrapers and scraper pressure plates. Utility Model Content

[0004] In order to solve the above technical problems existing in the background technology, the utility model provides a combined loading and unloading tool for a scraper assembly which is safe, fast and convenient to load and unload.

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

[0006] A combined loading and unloading tool for a scraper assembly, characterized in that: the combined loading and unloading tool for the scraper assembly includes a first loading and unloading tool part, the first loading and unloading tool part includes a support seat, a connecting bolt and a fixed base; the support seat is vertically arranged on the fixed base; the connecting bolt penetrates the support seat along the radial direction of the support seat and is connected to the scraper assembly to be loaded and unloaded.

[0007] The support seat and the fixed base are fixedly connected to form an integral structure.

[0008] The end of the fixed base is provided with a ball head or an arc chamfer.

[0009] The supporting seat is movably arranged on the fixed base through a hinge.

[0010] The first assembly and disassembly component also includes a bottom wheel assembly arranged at the bottom of the fixed base.

[0011] The bottom wheel set comprises a universal wheel.

[0012] The bottom wheel assembly also includes a directional wheel parallel to the universal wheel.

[0013] The above-mentioned connecting bolt is a T-shaped threaded rod.

[0014] The scraper assembly loading and unloading tool also includes a second loading and unloading tool part which has the same structure as the first loading and unloading part and is parallel to the first loading and unloading part.

[0015] The scraper assembly loading and unloading tool also includes a connecting plate arranged between the first loading and unloading part and the second loading and unloading tool.

[0016] The advantages of the utility model are:

[0017] The utility model provides a combined loading and unloading tool for a scraper assembly, comprising a first loading and unloading tool piece, which comprises a support seat, a connecting bolt and a fixed base; the support seat is vertically arranged on the fixed base; the connecting bolt penetrates the support seat along the radial direction of the support seat and is connected to the scraper assembly to be loaded and unloaded; there are preferably universal wheels that can be freely steered and directional wheels that can only move in a straight line at the front and back below the support seat. For example, when installing a scraper in a scraper assembly, first place the scraper on the horizontal plane of the forming chamber, penetrate the support seat along the radial direction of the support seat with the connecting bolts and connect them to the scraper to be installed, so that the utility model and the scraper form a whole, and through the lever formed by the bolts and the support seat or the fixed seat, turn the plane where the scraper to be installed is 90 degrees and perpendicular to the horizontal plane, then move and adjust the fixed base, push the scraper to be installed into the scraper holder, and then fix it to complete the installation of the scraper; the removal of the scraper is just the opposite, the connecting bolts penetrate the support seat along the radial direction of the support seat and connect it to the scraper to be removed, push the scraper away from the scraper holder, and similarly turn the plane where the scraper to be removed is 90 degrees through the lever method mentioned above and parallel to the horizontal plane to complete the removal of the scraper. The utility model can meet the requirements of safe, fast and convenient disassembly and assembly of large-format scrapers and scraper pressure plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the scraper assembly combined loading and unloading tool provided by the utility model when loading and unloading the scraper;

[0019] Figure 2 It is a structural schematic diagram of the scraper assembly combined loading and unloading tool provided by the utility model when loading and unloading the scraper pressure plate;

[0020] Figure 3 It is a schematic diagram of the process of loading and unloading the scraper assembly combined loading and unloading tool provided by the utility model;

[0021] in:

[0022] 1-scraper; 2-connecting plate; 3-support seat; 4-T-threaded rod; 5-fixed base; 6-universal wheel; 7-directional wheel; 8-scraper pressure plate. DETAILED DESCRIPTION

[0023] The utility model provides a combined scraper assembly loading and unloading tool, which is used to load and unload the scraper assembly (such as the scraper 1 or the scraper pressing plate 8) on the scraper frame. Figure 1 As shown Figure 2 As shown, they are schematic diagrams of loading and unloading the scraper 1 or the scraper pressing plate 8 based on the combined loading and unloading tooling of the scraper assembly provided by the utility model. The loading and unloading processes of the two are the same, and only the loading and unloading objects are different.

[0024] Specifically, the combined loading and unloading tooling of the scraper assembly provided by the utility model includes a first loading and unloading tooling piece, which includes a support seat 3, connecting bolts and a fixed base 5; the support seat 3 is vertically arranged on the fixed base 5; the connecting bolts penetrate the support seat 3 along the radial direction of the support seat 3 and are connected to the scraper assembly to be loaded and unloaded.

[0025] There are two ways to connect the support base 3 and the fixed base 5. The first one is referred to as the A-type structure. Figure 1 as well as Figure 3 (upper left figure), the support seat 3 is vertically arranged on the fixed base 5 and forms an integral part with the fixed base 5. When the A-type structure is in use, see Figure 3 First, place the scraper 1 (or scraper pressing plate 8) on the horizontal plane of the forming chamber, penetrate the support seat 3 along the radial direction of the support seat 3 with the connecting bolts and connect them to the scraper 1 (or scraper pressing plate 8), so that the utility model and the scraper 1 (or scraper pressing plate 8) form a whole. Through the overall structure formed by the utility model, especially with the front end of the fixed base 5 as the fulcrum of the lever, the scraper 1 (or scraper pressing plate 8) is turned 90°, that is, perpendicular to the horizontal plane, and then the fixed base 5 is moved and adjusted, and the scraper 1 (or scraper pressing plate 8) is pushed into the scraper frame. After the scraper 1 (or scraper pressing plate 8) is fixed, the installation of the scraper 1 (or scraper pressing plate 8) is completed. When the scraper 1 (or scraper pressure plate 8) needs to be removed, the connecting bolts are passed through the support seat 3 along the radial direction of the support seat 3 and connected to the scraper to be removed, the connecting bolts between the scraper 1 (or scraper pressure plate 8) and the scraper frame are removed, and the scraper 1 (or scraper pressure plate 8) is pushed away from the scraper frame. Similarly, the plane where the scraper 1 (or scraper pressure plate 8) to be removed is located is turned 90° by the lever method mentioned above and is parallel to the horizontal plane, thereby completing the removal of the scraper 1 (or scraper pressure plate 8).

[0026] Of course, the scraper 1 (or scraper pressure plate 8) may not be placed on a horizontal plane in the initial state, for example, it may be suspended vertically in a storage bin. In this case, the fixed base 5 is directly moved, and the connecting bolts are passed through the support seat 3 along the radial direction of the support seat 3 and connected to the scraper 1 (or scraper pressure plate 8), so that the utility model and the scraper 1 (or scraper pressure plate 8) form a whole. Then the fixed base 5 is moved, and the support seat 3 connected with the scraper 1 (or scraper pressure plate 8) is slowly moved to the vicinity of the scraper frame. After the scraper 1 (or scraper pressure plate 8) is fixed, the installation of the scraper 1 (or scraper pressure plate 8) is completed. When it is necessary to remove the scraper 1 (or scraper pressure plate 8) from the scraper frame, the connecting bolts are passed through the support seat 3 along the radial direction of the support seat 3 and connected to the scraper to be removed, the connecting bolts between the scraper 1 (or scraper pressure plate 8) and the scraper frame are removed, the scraper 1 (or scraper pressure plate 8) is pushed away from the scraper frame, the fixed base 5 is moved, the scraper 1 (or scraper pressure plate 8) is hung in a fixed position, and the connecting bolts are removed from the scraper 1 (or scraper pressure plate 8) to complete the removal of the scraper 1 (or scraper pressure plate 8).

[0027] The second type, referred to as type B structure, see Figure 3 , especially Figure 3 In the lower left figure, the support seat 3 is movably arranged on the fixed base 5 through a hinge. Under the action of the hinge, the support seat 3 and the fixed base 5 can rotate relative to each other. When the B-type structure is in use, see Figure 3 First, place the scraper 1 (or scraper pressure plate 8) on the horizontal plane of the forming chamber, and control the hinge to cause the support seat 3 and the fixed base 5 to rotate 90° relative to each other. At this time, ensure that the fixed base 5 is on the horizontal plane and the support seat 3 is parallel to the horizontal plane. The connecting bolts are passed through the support seat 3 along the radial direction of the support seat 3 and then connected to the scraper 1 (or scraper pressure plate 8), so that the utility model, especially the support seat 3 and the scraper 1 (or scraper pressure plate 8) form a whole, with the hinge between the support seat 3 and the fixed base 5 as the fulcrum of the lever, control the hinge, and flip the support seat 3 connected with the scraper 1 (or scraper pressure plate 8) 90°. After the flipping is completed, it is fixed to the fixed base 5 to form an integral structure, and then move and adjust the fixed base 5, push the scraper 1 (or scraper pressure plate 8) into the scraper frame, and after fixing the scraper 1 (or scraper pressure plate 8), the installation of the scraper 1 (or scraper pressure plate 8) is completed. When it is necessary to remove the scraper 1 (or scraper pressure plate 8), the connecting bolts are passed through the support seat 3 along the radial direction of the support seat 3 and connected to the scraper to be removed. The connecting bolts between the scraper 1 (or scraper pressure plate 8) and the scraper frame are removed, and the scraper 1 (or scraper pressure plate 8) is pushed away from the scraper frame. Similarly, the support seat 3 connected with the scraper 1 (or scraper pressure plate 8) is flipped 90° through the lever method mentioned above, so that the scraper 1 (or scraper pressure plate 8) is parallel to the horizontal plane, and the removal of the scraper 1 (or scraper pressure plate 8) is completed.

[0028] Exemplarily, the fixed base 5 used in the present invention is in the shape of a straight line as a whole, and a ball head or an arc chamfer is provided at its front end (the projection of the connecting bolt after passing through the support base 3 along the radial direction of the support base 3), and a handle is provided at the other end. The purpose of providing the ball head or the arc chamfer is that when the fixed base 5 is turned 90 degrees, by holding the handle behind the fixed base 5, the ball head or the arc chamfer at the front end of the fixed base 5 is brought into contact with the horizontal plane of the forming chamber, and the ball head or the arc chamfer is used as a fulcrum, and the overall structure (the overall structure formed by the present invention and the scraper 1 to be loaded and unloaded) is tilted by the principle of leverage, and finally the plane where the scraper 1 to be loaded and unloaded is located is made perpendicular to the surface of the forming chamber, that is, the 90 degree turn is completed.

[0029] In order to achieve more precise position adjustment, for example, the utility model can selectively provide a slide groove on the fixed base 5 along the axial direction of the fixed base 5, and the support seat 3 is placed in the slide groove and makes more precise movements along the axial direction of the slide groove. When the fixed base 5 is moved and gradually approaches the scraper frame, the support seat 3 can be moved to cause the movable support seat 3 connected with the scraper 1 (or the scraper pressure plate 8) to slowly fit with the scraper frame, thereby avoiding interference or damage to the scraper frame and other parts caused by moving the fixed base 5, thereby achieving fine adjustment of the position of the scraper 1 (or the scraper pressure plate 8) and the scraper frame.

[0030] The vertical installation position accuracy of the scraper assembly is determined by the position and size of the holes opened on the support seat 3, and the horizontal installation position accuracy is adjusted by the free movement of the wheel group under the fixed base 5 in the horizontal plane. After the installation holes are aligned, the scraper frame is attached and then fixed.

[0031] Preferably, the bottom of the fixed base 5 adopted in the utility model also includes a bottom wheel group to form a tooling vehicle-type structure, which can further save labor. Exemplarily, the bottom wheel group can adopt a freely steerable universal wheel 6 of the same structure, a fixed wheel 7 of the same structure, or a combination of a freely steerable universal wheel 6 and a fixed wheel 7 that only moves forward and backward.

[0032] In order to facilitate the connection of the connecting bolts with the scraper assembly to be loaded and unloaded, the connecting bolts used in the utility model are T-shaped threaded rods 4. The scraper assembly loading and unloading fixture provided by the utility model preferably also includes a second loading and unloading fixture piece that is completely identical in structure to the first loading and unloading fixture piece and is parallel to the first loading and unloading fixture piece. Through the joint action of the first loading and unloading fixture piece and the second loading and unloading fixture piece, the loading and unloading difficulty of the scraper assembly to be loaded and unloaded can be reduced to the greatest extent, and the work efficiency can be improved. Of course, in order to form a stable whole with the first loading and unloading fixture piece and the second loading and unloading fixture piece, the utility model has a connecting plate 2 between the first loading and unloading fixture piece and the second loading and unloading fixture piece.

Claims

1. A scraper assembly combined loading and unloading tool, characterized in that: The combined loading and unloading tooling for the scraper assembly comprises a first loading and unloading tooling part, which comprises a support seat (3), a connecting bolt and a fixed base (5); the support seat (3) is vertically arranged on the fixed base (5); the connecting bolt penetrates the support seat (3) along the radial direction of the support seat (3) and is connected to the scraper assembly to be loaded and unloaded.

2. The combined loading and unloading tool for scraper assembly according to claim 1 is characterized in that: The support seat (3) and the fixed base (5) are fixedly connected to form an integral structure.

3. The combined loading and unloading tool for scraper assembly according to claim 2 is characterized in that: The end of the fixed base (5) is provided with a ball head or a circular chamfer.

4. The combined loading and unloading tool for scraper assembly according to claim 1 is characterized in that: The support seat (3) is movably arranged on the fixed base (5) via a hinge.

5. The scraper assembly combined loading and unloading tool according to claim 1, 2, 3 or 4, characterized in that: The first loading and unloading component also includes a bottom wheel set arranged at the bottom of the fixed base (5).

6. The combined loading and unloading tool for scraper assembly according to claim 5 is characterized in that: The bottom wheel set comprises a universal wheel (6).

7. The combined loading and unloading tool for scraper assembly according to claim 6, characterized in that: The bottom wheel assembly also includes a directional wheel (7) parallel to the universal wheel (6).

8. The combined loading and unloading tool for scraper assembly according to claim 7 is characterized in that: The connecting bolt is a T-shaped threaded rod (4).

9. The combined loading and unloading tool for scraper assembly according to claim 8, characterized in that: The scraper assembly combined loading and unloading tool also includes a second loading and unloading tool part which has the same structure as the first loading and unloading part and is parallel to the first loading and unloading part.

10. The combined loading and unloading tool for scraper assembly according to claim 9, characterized in that: The scraper assembly combined loading and unloading tool also includes a connecting plate (2) arranged between the first loading and unloading part and the second loading and unloading tool.

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