Barrel cover assembly for cleaning ash barrel for SLM additive manufacturing

Abstract

The utility model discloses a barrel cover assembly for cleaning an ash barrel for SLM (selective laser melting) additive manufacturing, which comprises a barrel cover, and a gripper ball head is fixedly arranged at the center of the barrel cover; a water injection pipe and a one-way vent valve are further arranged on the barrel cover, and a pair of guide columns in bilateral symmetry is fixedly arranged on the upper surface of the barrel cover; each guide column is sleeved with a clamping plate; the lower end of the clamping plate is provided with an edge folding part which is used for being hooked on the bottom surface of the ash bucket, the upper end of the clamping plate is provided with a back-bending hook part, and the tail end of the back-bending hook part horizontally extends to form an extension part; and the top end of the back-bending hook part is in threaded connection with a butterfly bolt, and the butterfly bolt is used for tightly pressing the barrel cover at the opening when the butterfly bolt is tightened. The dust bucket can be sealed before being carried, water can be injected, powder scattering is reduced, safety is improved, the dust bucket cleaning device is suitable for being used when the dust bucket for SLM additive manufacturing is cleaned, and operation difficulty is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing, and in particular relates to a bucket cover assembly for cleaning an ash bucket manufactured by SLM additive manufacturing. Background Art

[0002] Laser selective melting metal 3D printing uses metal powder as raw material, controls the laser beam to act on the powder in the area to be formed, melts the powder, and forms it after cooling; then scans and melts it layer by layer, and accumulates it repeatedly until the entire part is formed. The remaining powder is recycled to the collection bucket, which is the ash bucket 1. Due to the production needs of SLM additive manufacturing, in one production process, in order to ensure the continuity of production, workers need to carry and clean the ash bucket and replace it with a new one many times. Ash bucket cleaning usually requires workers to wear fire safety clothing and fill water into the ash bucket at a close distance, and then carry and transfer it. Some ash particles are small, and they splash when they meet water and disperse in the gas of the ash bucket, which is easy to release heat and produce combustion or explosion, which is quite dangerous. Therefore, workers wearing fire safety clothing are inconvenient to move, sweating profusely when working, and difficult to operate; on the other hand, directly filling water into the ash bucket without a bucket cover is also easy to cause powder splashing. Summary of the invention

[0003] In order to overcome the shortcomings of the background technology, the utility model provides a bucket cover assembly for cleaning an ash bucket for SLM additive manufacturing. The purpose is to facilitate the transportation and cleaning of the ash bucket and reduce the possibility of powder flying into the air. At the same time, it is also necessary to facilitate the filling of water into the ash bucket. A bucket cover is designed to seal the ash bucket before transporting the ash bucket, thereby improving safety and reducing the difficulty of operation.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A barrel cover assembly for cleaning an ash barrel for SLM additive manufacturing comprises a barrel cover for buckling onto an open upper end of the ash barrel, a gripper ball head being fixedly arranged on the central upper surface of the barrel cover; a water injection pipe and a one-way air valve are also arranged on the barrel cover, which are respectively used to inject water into the ash barrel and discharge air from the ash barrel after the barrel cover is closed; a pair of left-right symmetrical guide columns are fixedly arranged on the upper surface of the barrel cover with the gripper ball head as a reference; each of the guide columns is fitted with a clamping plate; the lower end of the clamping plate is arranged as a folded edge portion for hooking on the bottom surface of the ash barrel, and the upper end of the clamping plate is arranged as a return hook portion, the end of the return hook portion is horizontally extended to form an extension portion, and the extension portion is provided with a guide hole for fitting on the guide column; a butterfly bolt is threadedly connected to the top end of the return hook portion, which is used to press the barrel cover against the open opening when the butterfly bolt is tightened.

[0006] As a further optimization, a sealing ring is fixedly connected to the inner side of the barrel cover, which is used to seal the gap between the barrel cover and the edge of the ash barrel when the barrel cover is buckled on the open opening.

[0007] As a further optimization, the folded edge portion is fixedly connected to a rubber pad for lining between the lower surface of the ash bucket and the folded edge portion.

[0008] As a further optimization, the water injection pipe is arranged close to the side wall of the ash bucket.

[0009] As a further optimization, a horizontal branch pipe is fixedly provided at the lower end of the water injection pipe for horizontally spraying water toward the side wall of the ash bucket.

[0010] As a further optimization, there are two branch pipes, which are symmetrical on the left and right sides and are used to spray water to the left and right sides simultaneously.

[0011] As a further optimization, the one-way vent valve is arranged away from the water injection pipe, and a filter layer is provided at its lower end for filtering the powder in the ash bucket when exhausting air.

[0012] As a further optimization, a screw sleeve is fixedly provided at the top end of the return-bend hook portion; the middle portion of the butterfly bolt is screwed into the screw sleeve, and the top end of the return-bend hook portion is threadedly connected to the butterfly bolt.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The detachable barrel cover can seal the ash barrel immediately, providing protection for the transfer of the ash barrel, preventing powder from overflowing and reducing the possibility of powder explosion. At the same time, the barrel cover does not hinder the filling of water into the barrel, thereby improving the safety of operation.

[0015] (2) The barrel cover and the clamping plate as the locking mechanism are designed to be separate, which enhances versatility. Different types of ash barrels can use the same clamping plate. Only the barrel covers of different sizes need to be replaced, which reduces the number of parts and saves costs.

[0016] (3) The water injection method is optimized to reduce the impact of water flow on powder and the risk of powder splashing and explosion.

[0017] (4) The device has a simple structure, is easy to manufacture and has low cost.

[0018] In conclusion, the device can seal the ash bucket before transporting it and can be filled with water to reduce powder scattering and improve safety. It is suitable for use in cleaning the ash bucket of SLM additive manufacturing to reduce the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic cross-sectional structure diagram of Example 1 of the utility model;

[0020] Figure 2 for Figure 1 Top view of the .

[0021] The correspondence between the technical features and the reference numerals in the figure is: ash bucket 1; bucket cover 2; gripper ball head 21; water filling pipe 22; one-way vent valve 23; guide column 24; sealing ring 25; clamping plate 3; folded edge portion 31; return bend hook portion 32; extension portion 33; guide hole 34; screw sleeve 35; rubber pad 36; butterfly bolt 4. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the preferred embodiments of the present invention, rather than all the embodiments. It should be understood by those skilled in the art that these implementation methods are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1-2 ;

[0024] The utility model provides the following technical solution: a bucket cover assembly for cleaning an ash bucket manufactured by SLM additive manufacturing, comprising a bucket cover 2 for buckling the upper open end of the ash bucket 1, a gripping ball head 21 being fixedly arranged on the central upper surface of the bucket cover 2; a water injection pipe 22 and a one-way vent valve 23 are also arranged on the bucket cover 2, which are respectively used to inject water into the ash bucket 1 and discharge the air in the ash bucket 1 after the bucket cover 2 is covered; a pair of left-right symmetrical guide columns 24 are fixedly arranged on the upper surface of the bucket cover 2 with the gripping ball head 21 as a reference; each of the guide columns 24 is fixedly arranged on the upper surface of the bucket cover 2; A clamping plate 3 is mounted on the column 24; the lower end of the clamping plate 3 is set as a folded edge portion 31 for hooking on the bottom surface of the ash bucket 1, and the upper end is set as a return hook portion 32, the end of the return hook portion 32 is horizontally extended to form an extension portion 33, and the extension portion 33 is provided with a guide hole 34 for being mounted on the guide column 24; a butterfly bolt 4 is threadedly connected to the top end of the return hook portion 32, so that when the butterfly bolt 4 is tightened, the lower end of the butterfly bolt 4 presses the upper surface of the bucket cover 2 to press the bucket cover 2 at the opening.

[0025] The working principle includes: the clamping plate 3 and the butterfly bolt 4 are combined to form a locking assembly, which is used to press the barrel cover 2 against the open part, so as to seal the ash barrel 1; at the same time, after reversing the butterfly bolt 4, the locking of the barrel cover 2 can be released, and the barrel cover 2 can be opened. It can be seen that the locking assembly of this method does not depend on the structure of the ash barrel 1, and can be suitable for ash barrels 1 with different structures, thereby improving adaptability. After the barrel cover 2 is covered, water is poured into the ash barrel 1 to avoid powder splashing and improve safety. The function of the one-way vent valve 23 is, on the one hand, to discharge excess gas when water is poured into the ash barrel 1, and on the other hand, if a chemical reaction occurs in the ash barrel 1 to cause gas expansion, the pressure can be released in time. In addition, since it is a one-way valve, it can prevent air outside the barrel from entering the barrel. After the barrel cover 2 is covered, the contact opportunity between the powder in the barrel and the air is reduced. Among them, a screw sleeve 35 is fixed on the return hook 32, and the butterfly bolt 4 is screwed into the screw sleeve 35 to achieve the function of threaded connection.

[0026] In order to improve the sealing performance, a sealing ring 25 is fixedly connected to the inner side of the bucket cover 2, which is used to seal the gap between the bucket cover 2 and the edge of the ash bucket 1 when the bucket cover 2 is buckled on the open mouth. The sealing ring 25 can be a rubber ring or a silicone ring.

[0027] In order to reduce vibration during transportation and transfer, the folded edge portion 31 is fixedly connected to a rubber pad 36, which is used to cushion between the lower surface of the ash bucket 1 and the folded edge portion 31. The powder splashing caused by vibration is reduced, and safety is further improved.

[0028] In order to reduce the impact of water flow and avoid the splashing of powder caused by water flow impacting the powder, the water injection pipe 22 is arranged close to the side wall of the ash bucket 1. The water flow falls along the bucket wall to reduce the impact force.

[0029] A further optimization is that a horizontal branch pipe is fixed at the lower end of the water injection pipe 22 for horizontally injecting water into the side wall of the ash bucket 1. The water flow can first flow horizontally along the bucket wall and then fall, further reducing the impact force and making it smoother.

[0030] A further optimization is that there are two branch pipes, which are symmetrical on the left and right sides, and are used to inject water to the left and right sides at the same time, so that the water flow is more dispersed and smoother.

[0031] In order to facilitate exhaust, the one-way air valve 23 is arranged away from the water injection pipe 22 and away from the impact of the water flow, reducing the chance of the one-way air valve 23 contacting powder. A filter layer is provided at the lower end of the one-way air valve 23 to filter the powder in the ash bucket 1 when exhausting air; even if a small amount of powder splashes, it can be filtered through the filter layer to avoid the powder overflowing from the bucket. The filter layer is replaceable to avoid clogging the one-way air valve 23.

[0032] An exemplary method of use is to first buckle the bucket cover 2 onto the ash bucket 1, then put the guide column 24 on the upper end of the clamping plate 3, and then insert the folded edge portion 31 into the bottom of the ash bucket 1, and then tighten the butterfly bolt 4 until the bottom end of the butterfly bolt 4 presses against the bucket cover 2, completing the installation of the bucket cover 2. Secondly, connect the water pipe to the water injection pipe 22, and inject water into the ash bucket 1. After the water injection is completed, remove the water pipe, and the staff grasps the bent hook portion 32 as a gripper to lift the ash bucket 1 for transfer. Finally, replace the new ash bucket 1 so that the 3D printing equipment can continue to work.

[0033] The advantages of this embodiment are:

[0034] (1) The detachable barrel cover 2 can immediately seal the ash barrel 1, providing protection for the transfer of the ash barrel 1, preventing powder from overflowing and reducing the possibility of powder explosion. At the same time, after the barrel cover 2 is closed, it does not hinder the water from being poured into the barrel, thereby improving the safety of operation.

[0035] (2) The barrel cover 2 and the clamping plate 3 serving as the locking mechanism are designed to be separate, which enhances versatility. Different types of ash barrels 1 can use the same clamping plate 3, and only the barrel covers 2 of different sizes need to be replaced, thereby reducing the number of parts and saving costs.

[0036] (3) The water injection method is optimized to reduce the impact of water flow on powder and the risk of powder splashing and explosion.

[0037] (4) The device has a simple structure, is easy to manufacture and has low cost.

[0038] In summary, the device can seal the ash bucket 1 before transporting it, and can be filled with water, thereby reducing powder scattering, improving safety, and alleviating operational difficulty. The device is suitable for use when cleaning the ash bucket 1 manufactured by SLM additive manufacturing.

[0039] The parts not described in detail in this utility model are prior art; for ordinary technicians in this field, the technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The scope of this utility model is defined by the attached claims and their equivalents.

Claims

1. A bucket cover assembly for cleaning an ash bucket for SLM additive manufacturing, comprising a bucket cover (2) for buckling on an open upper end of the ash bucket (1), wherein a gripper ball head (21) is fixedly arranged on the central upper surface of the bucket cover (2); the characteristics are: The barrel cover (2) is also provided with a water injection pipe (22) and a one-way ventilation valve (23); Taking the gripper ball head (21) as a reference, a pair of left-right symmetrical guide posts (24) are fixedly arranged on the upper surface of the barrel cover (2); a clamping plate (3) is mounted on each of the guide posts (24); The lower end of the clamping plate (3) is provided as a folded edge portion (31) for hooking on the bottom surface of the ash bucket (1), and the upper end thereof is provided as a return hook portion (32). The end of the return hook portion (32) is horizontally extended to form an extension portion (33), and the extension portion (33) is provided with a guide hole (34) for being mounted on the guide column (24); a butterfly bolt (4) is threadedly connected to the top end of the return hook portion (32) for pressing the bucket cover (2) against the opening when the butterfly bolt (4) is tightened.

2. The bucket cover assembly for cleaning the ash bucket for SLM additive manufacturing according to claim 1, characterized in that: The inner side of the bucket cover (2) is fixedly connected to a sealing ring (25) for sealing the gap between the bucket cover (2) and the edge of the ash bucket (1).

3. The bucket cover assembly for cleaning the ash bucket for SLM additive manufacturing according to claim 1, characterized in that: The folded edge portion (31) is fixedly connected to the rubber pad (36).

4. The bucket cover assembly for cleaning the ash bucket for SLM additive manufacturing according to claim 1, characterized in that: The water injection pipe (22) is arranged close to the side wall of the ash bucket (1).

5. The bucket cover assembly for cleaning the ash bucket for SLM additive manufacturing according to claim 4, characterized in that: A horizontal branch pipe is fixedly provided at the lower end of the water injection pipe (22) for horizontally spraying water toward the side wall of the ash bucket (1).

6. The bucket cover assembly for cleaning the ash bucket for SLM additive manufacturing according to claim 5, characterized in that: There are two branch pipes, which are symmetrical on the left and right sides and are used to spray water to the left and right sides at the same time.

7. The bucket cover assembly for cleaning the ash bucket for SLM additive manufacturing according to claim 1, characterized in that: The one-way vent valve (23) is arranged away from the water injection pipe (22), and a filter layer is provided at its lower end for filtering powder in the ash bucket (1) during exhaust.

8. The bucket cover assembly for cleaning the ash bucket for SLM additive manufacturing according to claim 1, characterized in that: A screw sleeve (35) is fixedly arranged at the top end of the return hook portion (32); the middle portion of the butterfly bolt (4) is screwed into the screw sleeve (35) so that the top end of the return hook portion (32) is threadedly connected to the butterfly bolt (4).

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