3D printing metal mold based on receding layer

Abstract

The utility model provides a 3D printing metal mold based on a receding layer, which comprises a 3D printing metal mold, a cooling flow channel is arranged at the bottom end in the 3D printing metal mold, a cooling medium inlet penetrates through the middle of the bottom end of the cooling flow channel, the receding layer is arranged on the periphery in the 3D printing metal mold, a cooling enhancement mechanism is arranged in the cooling flow channel, and the cooling medium inlet is communicated with the cooling flow channel. And a lubricating mechanism is arranged at the left end of the 3D printing metal mold. According to the 3D printing metal mold based on the clearance layer, the lubricating mechanism is arranged, a mold release agent can be evenly smeared on the surface of the 3D printing metal mold through a distribution film before use, and therefore friction force is reduced, and the demolding effect is improved; and a cooling enhancing mechanism is arranged, cooling liquid can be guided and distributed through a hollow rod and a hollow block, uniform cooling of products in the whole mold is achieved, and the cooling efficiency of the mold is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal molds, and more specifically to a 3D printing metal mold based on a void-avoiding layer. Background Art

[0002] 3D printed metal molds refer to the process of using 3D printing technology to manufacture metal molds. The air avoidance layer in the 3D printed metal mold refers to a specific area designed or added to leave space during the metal mold manufacturing process in order to achieve specific functions or meet specific requirements. These air avoidance layers play an important role in metal mold manufacturing. In traditional molds, the cooling channel is limited by the processing methods, so the cooling effect will vary greatly, and the cooling is not easy to control. It is often the case that some places are not cooled enough, while others are cooled too much.

[0003] In view of the above problems, regarding the technical problem of uneven cooling of existing molds, after a lot of searches, a 3D printed metal mold based on an air avoidance layer with patent number CN213888055U was found, including a 3D printed metal mold; a conformal cooling channel is arranged inside the 3D printed metal mold; an air avoidance layer is arranged inside the 3D printed metal mold; the air avoidance layer is a cavity between the area on the 3D printed metal mold that needs to be kept warm and does not need rapid cooling and the corresponding conformal cooling channel; the advantages of this utility model are: making full use of the advantages of 3D printing, effectively reducing the heat conduction properties on both sides of the air avoidance layer; targeted cooling of the hot node area, so that the casting can be quickly solidified sequentially; however, the technical solution provided by this patent has the following problems:

[0004] (1) When a 3D printed metal mold is in use, if the mold surface roughness is too high, it will increase the friction between the product and the mold, making demolding difficult; especially in metal 3D printing, the mold surface roughness may be large due to the printing process, which increases the friction; if the release agent is not evenly applied, the friction between the product and the mold will increase, affecting the demolding effect;

[0005] (2) The area of ​​cooling channels and air avoidance layers in 3D printed metal molds is small, which may lead to better cooling effects in some areas of the mold and poor cooling effects in other areas, resulting in uneven temperature distribution in the mold, affecting production quality and efficiency.

[0006] The utility model can fully coat the mold cavity with the distribution film, so that the product is easier to demould later; at the same time, the cooling channel and the air avoidance layer cooperate to have a more comprehensive heat exchange area, so that the cooling is faster and more comprehensive. Utility Model Content

[0007] The utility model aims to solve the technical problems raised by the above-mentioned background technology and provides a 3D printing metal mold based on an air-avoiding layer.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a 3D printed metal mold based on an air avoidance layer, comprising: a 3D printed metal mold, a cooling channel is provided at the inner bottom end of the 3D printed metal mold, a cooling medium inlet is penetrated through the middle of the bottom end of the cooling channel, an air avoidance layer is provided around the inside of the 3D printed metal mold, a cooling enhancement mechanism is arranged inside the cooling channel, and a lubrication mechanism is arranged at the left end of the 3D printed metal mold.

[0009] A further preferred solution: the lubrication mechanism comprises: a winding frame, a winding roller and a distribution film;

[0010] The winding frame is fixedly installed at the left end of the 3D printing metal mold, the winding roller is rotatably arranged inside the winding frame, and the distribution film is wound on the outer surface of the winding roller.

[0011] A further preferred solution: the cooling enhancement mechanism comprises: a hollow rod, an upper hollow block, a lower hollow block and a turning handle;

[0012] The hollow rod is rotatably arranged inside the cooling channel, and both ends of the hollow rod respectively penetrate the left and right ends of the 3D printing metal mold and are fixed with turning handles. Several upper hollow blocks are evenly fixed around the top of the hollow rod, and a lower hollow block is fixed in the middle of the bottom end of the hollow rod.

[0013] A further preferred solution is that the outer end of the winding roller penetrates to the outer side 3 of the winding frame and is fixed with a circular rotating handle, and the distribution film fits the inner wall of the 3D printing metal mold.

[0014] A further preferred solution is that a plurality of the upper hollow blocks are in conflict with the air avoidance layer, and a lower hollow block is in conflict with the cooling medium inlet.

[0015] A further preferred solution: both ends of the hollow rod are rotatably connected to the inside of the 3D printed metal mold through sealed bearings, and the handle is set in an L shape.

[0016] A further preferred solution is that the cooling medium inlet is connected to the cooling channel, the cooling channel is connected to the air avoidance layer, and a plurality of air avoidance layers are provided and all are arranged in a wave shape.

[0017] Beneficial effects:

[0018] 1. By setting up a lubrication mechanism, before using the 3D printing metal mold, the mold release agent can be injected into the winding frame, and then the distribution film can be pulled to rotate the winding roller in the winding frame to release the distribution film; then the distribution film is covered on the surface of the 3D printing metal mold, and the mold release agent can be evenly applied to the surface of the 3D printing metal mold through the distribution film; thereby reducing the friction between the product and the mold and improving the demoulding effect;

[0019] 2. By setting a cooling enhancement mechanism, when the product in the 3D printing metal mold is formed, the coolant can be injected through the cooling medium inlet; the coolant can enter the hollow rod through the lower hollow block; then the coolant can enter the multiple air avoidance layers through several upper hollow blocks; finally, the coolant evenly cools the product in the 3D printing metal mold in the multiple wavy air avoidance layers; the uniform cooling of the product in the entire mold is achieved, avoiding the problem of uneven cooling effect in the original structure;

[0020] 3. In summary, this 3D printed metal mold based on the air-avoiding layer is provided with a lubrication mechanism, and the mold release agent can be evenly applied on the surface of the 3D printed metal mold through a distribution film before use, thereby reducing friction and improving the demolding effect; a cooling enhancement mechanism is provided, and the coolant can be guided and distributed through hollow rods and hollow blocks to achieve uniform cooling of the product in the entire mold, thereby improving the cooling efficiency of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 It is a schematic structural diagram of a top view of a 3D printing metal mold of the present utility model.

[0023] Figure 3 It is a schematic diagram of the front section structure of the 3D printing metal mold of the present utility model.

[0024] Figure 4 For this utility model Figure 3 Enlarged view of point A in .

[0025] Figure 1-4 Middle: 1. 3D printing metal mold; 2. Winding frame; 3. Winding roller; 4. Distribution film; 5. Cooling channel; 6. Air avoidance layer; 7. Hollow rod; 8. Upper hollow block; 9. Lower hollow block; 10. Cooling medium inlet; 11. Turning handle. DETAILED DESCRIPTION

[0026] The following will be combined with the attached embodiment of the present utility model Figure 1-Figure 4 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0027] See also Figure 1-4In an embodiment of the utility model, a 3D printing metal mold based on an air avoidance layer includes: a lubrication mechanism is arranged at the left end of the 3D printing metal mold 1, which helps to reduce friction and wear and extend the service life of the 3D printing metal mold 1; a cooling channel 5 is located inside the bottom end of the 3D printing metal mold 1, and a cooling medium inlet 10 runs through the middle of the cooling channel 5, which is used to guide the coolant into the 3D printing metal mold 1 for cooling; a cooling enhancement mechanism is located inside the cooling channel 5, which can effectively realize uniform cooling of the product inside the 3D printing metal mold 1; an air avoidance layer 6 is located around the inside of the 3D printing metal mold 1, and is a gap layer arranged to increase the cooling surface area and improve the cooling effect.

[0028] In an embodiment of the utility model, the lubrication mechanism includes: a winding frame 2, a winding roller 3 and a distribution film 4; the winding frame 2 is fixedly installed at the left end of the 3D printing metal mold 1, that is, the position connected to the mold; this position is designed to ensure that the lubrication mechanism can accurately cover the entire mold surface when in use; the winding roller 3 is rotatably arranged inside the winding frame 2, and a distribution film 4 is wound on its outer surface; the winding roller 3 releases the distribution film 4 by rotating, so that the release agent can be evenly applied on the mold surface; the distribution film 4 is covered on the outer surface of the winding roller 3, and is used to carry and transfer the release agent; before use, by pulling the distribution film 4, the release agent can be injected into the distribution film 4 from the winding frame 2, and then covered on the mold surface to achieve uniform application of the release agent.

[0029] In the embodiment of the utility model, the cooling enhancement mechanism includes: a hollow rod 7, an upper hollow block 8, a lower hollow block 9 and a turning handle 11; the hollow rod 7 is rotatably arranged inside the cooling channel 5, and the two ends respectively penetrate the left and right ends of the 3D printing metal mold 1 and are fixed with the turning handle 11; the main function of the hollow rod 7 is to guide the coolant to enter and circulate in the mold; the functions of the upper hollow block 8 and the lower hollow block 9: the upper hollow block 8 is fixed around the top of the hollow rod 7, and the lower hollow block 9 is fixed at the bottom of the hollow rod 7, which play the role of guiding and distributing the coolant; the coolant enters the interior of the hollow rod 7 through the lower hollow block 9, and then enters the multiple air-avoiding layers 6 through several upper hollow blocks 8 respectively, so as to realize the cooling and cooling of the product in the 3D printing metal mold; when the product is formed, the cooling medium is injected through the cooling medium inlet 10, enters the interior of the hollow rod 7, and then enters the multiple air-avoiding layers 6 through the upper hollow block 8; finally, the coolant evenly cools the product in the 3D printing metal mold in the wavy air-avoiding layer 6.

[0030] In the embodiment of the utility model, the outer end of the winding roller 3 penetrates the outer side of the winding frame 2 and is fixed with a round handle, which is used to control or adjust the position and movement of the winding roller 3, so that the distribution film 4 can be properly rolled and adjusted; the distribution film 4 fits the inner wall of the 3D printing metal mold 1, and is used to smoothly cover the distribution film 4 on the inner wall of the 3D printing metal mold 1 for lubrication. .

[0031] In the embodiment of the utility model, the upper hollow block 8 is in conflict with the air avoidance layer 6, so that the cooling medium can enter the air avoidance layer 6 through the upper hollow block 8 and circulate, thereby increasing the cooling area; the lower hollow block 9 is in conflict with the cooling medium inlet 10, so that the cooling medium can enter the lower hollow block 9 through the cooling medium inlet 10, thereby realizing effective transportation of the cooling medium.

[0032] In the embodiment of the utility model, both ends of the hollow rod 7 are connected to the internal rotation of the 3D printed metal mold 1 through sealed bearings in order to realize the rotation of the hollow rod 7 for operation; the turning handle 11 is set in an L shape to facilitate the operator to control the rotation. The L-shaped design may provide a better operating feel and force arm, thereby making it easier to achieve precise rotation control.

[0033] In the embodiment of the utility model, the cooling medium inlet 10 is connected with the cooling channel 5, which means that the cooling medium enters the cooling channel 5 through the cooling medium inlet 10. The purpose of such design is to guide the cooling medium into the channel; the cooling channel 5 is connected with the air avoidance layer 6 so that the cooling medium can effectively dissipate heat when flowing through the air avoidance layer 6; the air avoidance layer 6 is provided with multiple and all of them are arranged in a wavy shape, which is conducive to increasing the surface area and thus improving the cooling effect.

[0034] Working principle: First, before using the 3D printing metal mold 1, the mold release agent can be injected into the winding frame 2, and then the distribution film 4 can be pulled to rotate the winding roller 3 in the winding frame 2 to release the distribution film 4; then the distribution film 4 is covered on the surface of the 3D printing metal mold 1, and the mold release agent can be evenly applied to the surface of the 3D printing metal mold 1 through the distribution film 4; thereby reducing the friction between the product and the mold and improving the demoulding effect; when the product in the 3D printing metal mold 1 is formed, the user can inject coolant through the cooling medium inlet 10; the coolant can enter the hollow rod 7 through the lower hollow block 9; then The coolant can enter into multiple air avoidance layers 6 respectively through several upper hollow blocks 8; finally, the coolant evenly cools the product in the 3D printing metal mold 1 in the multiple wavy air avoidance layers 6; the uniform cooling of the product in the entire mold is achieved, avoiding the problem of uneven cooling effect in the original structure; if the cooling flow channel 5 needs to be separated from the air avoidance layer 6, it is only necessary to rotate the hollow rod 7 180 degrees, so that several upper hollow blocks 8 are misaligned with the air avoidance layer 6, and the lower hollow block 9 is misaligned with the cooling medium inlet 10; the operation is simple; and it can prevent external dust from entering and causing harm when the 3D printing metal mold 1 is idle.

Claims

1. A 3D printing metal mold based on a void-avoiding layer, comprising: A 3D printing metal mold (1) is characterized in that: a cooling channel (5) is provided at the bottom of the interior of the 3D printing metal mold (1), a cooling medium inlet (10) runs through the middle of the bottom of the cooling channel (5), an air-avoiding layer (6) is provided around the interior of the 3D printing metal mold (1), a cooling enhancement mechanism is provided inside the cooling channel (5), and a lubrication mechanism is provided at the left end of the 3D printing metal mold (1).

2. A 3D printing metal mold based on a void-avoiding layer according to claim 1, characterized in that: The lubrication mechanism comprises: a winding frame (2), a winding roller (3) and a distribution film (4); The winding frame (2) is fixedly mounted on the left end of the 3D printing metal mold (1), and the winding roller (3) is rotatably arranged inside the winding frame (2), and the outer surface of the winding roller (3) is wound with a distribution film (4).

3. A 3D printing metal mold based on a void-avoiding layer according to claim 1, characterized in that: The cooling enhancement mechanism comprises: a hollow rod (7), an upper hollow block (8), a lower hollow block (9) and a turning handle (11); The hollow rod (7) is rotatably arranged inside the cooling channel (5), and the two ends of the hollow rod (7) respectively penetrate the left and right ends of the 3D printing metal mold (1) and are both fixedly equipped with a turning handle (11), a plurality of upper hollow blocks (8) are evenly fixedly equipped around the top of the hollow rod (7), and a lower hollow block (9) is fixedly equipped in the middle of the bottom end of the hollow rod (7).

4. A 3D printing metal mold based on a void-avoiding layer according to claim 2, characterized in that: The outer end of the winding roller (3) penetrates to the outside of the winding frame (2) and is fixedly provided with a circular rotating handle, and the distribution film (4) is in contact with the inner wall of the 3D printing metal mold (1).

5. The 3D printing metal mold based on the air-avoiding layer according to claim 3, characterized in that: A plurality of the upper hollow blocks (8) are in contact with the air avoidance layer (6), and the lower hollow block (9) is in contact with the cooling medium inlet (10).

6. The 3D printing metal mold based on the air-avoiding layer according to claim 3, characterized in that: Both ends of the hollow rod (7) are rotatably connected to the inside of the 3D printing metal mold (1) via sealed bearings, and the turning handle (11) is arranged in an L shape.

7. The 3D printing metal mold based on the air-avoiding layer according to claim 1, characterized in that: The cooling medium inlet (10) is connected to the cooling channel (5), the cooling channel (5) is connected to the air avoidance layer (6), and a plurality of air avoidance layers (6) are provided and are all arranged in a wave shape.

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