Additive printing equipment with pick-up cabin

Abstract

The utility model belongs to the field of additive manufacturing, and relates to additive printing equipment with pick-up cabins, which comprises forming chambers and the pick-up cabins, and the number of the pick-up cabins is larger than that of the forming chambers. And the piece taking cabin and the forming chamber are not one-to-one. According to the additive printing equipment with the pick-up cabin, the utilization rate of the forming chamber and the pick-up cabin is improved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of additive manufacturing and relates to a printing device, in particular to an additive printing device with a pickup cabin. Background Art

[0002] Additive manufacturing is a process based on 3D CAD model data. It uses a computer 3D design model as a blueprint, and uses software layered discretization and CNC forming systems to stack materials layer by layer using high-energy beams, and finally stack and form to produce physical products. Laser selective melting SLM is a method of direct forming of metal parts and the latest development of additive manufacturing technology. This technology is based on the most basic idea of ​​rapid prototyping, that is, the incremental manufacturing method of layer-by-layer cladding. Parts with specific geometric shapes are directly formed according to the 3D CAD model. During the forming process, the metal powder is completely melted to produce a metallurgical bond. For metal parts with complex shapes and structures that cannot be manufactured by traditional machining methods, the use of laser selective melting SLM is undoubtedly one of the main directions of application of laser rapid prototyping technology.

[0003] Laser selective melting SLM is often completed by a metal printing device with a pickup cabin. Generally speaking, there are two modes of metal printing devices with pickup cabins, namely: 1) combining a forming chamber with a pickup cabin to form a one-to-one printing device; 2) combining two forming chambers with a pickup cabin to form a one-to-two printing device (such as the utility model patent with the authorization announcement number CN 216656345 U). Whether it is a one-to-one printing device or a one-to-two printing device, the production requirements of printing and picking up can be basically achieved when the printing time is longer than the pickup time. However, as the printing efficiency of the forming chamber gradually increases and the volume of complex shaped products that can be produced gradually increases, the difference between the printing time and the pickup time becomes smaller and smaller, and even the printing time is less than the pickup time. At this time, the time that the forming chamber is in a non-working state will increase, and the utilization rate of the forming chamber will decrease, which will lead to a decrease in printing production efficiency. Utility Model Content

[0004] In order to solve the above technical problems existing in the background technology, the utility model provides an additive printing device with a pickup cabin, which improves the utilization rate of the forming chamber and the pickup cabin and improves the production efficiency.

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

[0006] An additive printing device with a pickup cabin comprises a forming chamber and a pickup cabin, wherein the number of the pickup cabins is greater than the number of the forming chambers; and the pickup cabins are not arranged one-to-one with the forming chambers.

[0007] The pickup cabin is equipped with a forming chamber in a many-to-one manner or in a many-to-many manner.

[0008] When the pickup cabins are equipped with the forming chamber in a many-to-one manner, the pickup cabins at least include a first pickup cabin and a second pickup cabin, and the first pickup cabin and the second pickup cabin are respectively arranged on the peripheral sides of the forming chamber.

[0009] The first pickup chamber, the forming chamber and the second pickup chamber are in a straight line shape as a whole.

[0010] An angle is set between the connection line between the first pickup cabin and the forming chamber and the connection line between the second pickup cabin and the forming chamber.

[0011] When the above-mentioned pickup cabins are equipped with forming chambers in a many-to-many manner, the pickup cabins include at least 3 mutually independent pickup cabins; the forming chambers include at least 2 mutually independent forming chambers; the 3 pickup cabins and the 2 forming chambers are staggered.

[0012] The additive printing device with a pickup cabin is generally in a straight line or matrix shape.

[0013] The above-mentioned additive printing device with a pickup cabin also includes a forming cylinder assembly that moves from below the forming chamber to below the pickup cabin or from below the pickup cabin to below the forming chamber.

[0014] The above-mentioned additive printing device with a pickup cabin also includes a horizontal movable shaft arranged between the forming chamber and the pickup cabin; the forming cylinder assembly is placed on the horizontal movable shaft and moves from the bottom of the forming chamber to the bottom of the pickup cabin or from the bottom of the pickup cabin to the bottom of the forming chamber.

[0015] The above-mentioned forming cylinder assembly includes a forming cylinder and a driving member; the forming cylinder is placed on a horizontal moving axis; the driving member is connected to the forming cylinder and drives the forming cylinder to move freely on the horizontal moving axis; the forming cylinder includes a cylinder body and a Z-direction drive, and the Z-direction drive drives the cylinder body to move freely in the height direction.

[0016] The advantages of the utility model are:

[0017] The utility model provides an additive printing device with a pickup cabin, including a forming chamber and a pickup cabin, the number of which is greater than the number of forming chambers; the pickup cabins and the forming chambers are not equipped one by one. The utility model combines a relatively small number of forming chambers with a relatively large number of pickup cabins to form a multi-to-one or multi-to-multi printing device. Compared with a one-to-one printing device or a one-to-two printing device, when the printing time is less than or close to the pickup time, the multi-to-one or multi-to-multi printing device provided by the utility model solves the idle phenomenon of the forming chamber caused by cooling, powder cleaning and pickup operations, which not only ensures efficient printing in the forming chamber, but also does not delay the pickup operation, solves the problem of the printed products waiting to be picked up, and greatly improves the utilization rate of the forming chamber and the pickup cabin. While printing, the operator can perform the pickup operation at the same time; as the pickup operation of a batch of products is completed, the pickup operation of another batch of products can be performed if it has been printed, which greatly saves time cost and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the additive printing device (inline two-to-one printing device) with a pickup cabin provided by the utility model;

[0019] Figures 2 to 6 They are respectively operation process arrangement diagrams of the additive printing device with a pickup cabin (inline two-to-one printing device) provided by the utility model at different printing times and different pickup times;

[0020] Figure 7 It is a schematic diagram of the overall structure of the additive printing device with a pickup cabin provided by the utility model (non-inline two-to-one printing device);

[0021] Figure 8 It is a schematic diagram of the overall structure of the additive printing device with a pickup cabin provided by the utility model (non-straight-line multi-to-one printing device);

[0022] Fig. 9 It is a schematic diagram of the overall structure of the additive printing device (single-line multi-to-multi printing device) with a pickup cabin provided by the utility model;

[0023] Fig.10 It is a schematic diagram of the overall structure of the additive printing device (matrix-type multi-to-multi printing device) with a pickup cabin provided by the utility model;

[0024] in:

[0025] 1-first pickup cabin; 2-first forming cylinder assembly; 3-second pickup cabin; 4-second forming cylinder assembly; 5-forming chamber; 6-X axis. DETAILED DESCRIPTION

[0026] The present invention provides an additive printing device with a pickup cabin, comprising a forming chamber 5 and a pickup cabin, wherein the number of the pickup cabins is greater than the number of the forming chambers 5; the pickup cabins are not equipped one-to-one with the forming chambers 5. Preferably, the additive printing device with a pickup cabin provided by the present invention uses the pickup cabins to be equipped with the forming chambers 5 in a many-to-one manner or in a many-to-many manner.

[0027] Exemplarily, when the pickup cabin is equipped with the forming chamber 5 in a multiple-to-one manner, the number of the pickup cabins is at least 2. For example, the pickup cabin at least includes a first pickup cabin 1 and a second pickup cabin 3, and the first pickup cabin 1 and the second pickup cabin 3 are respectively arranged on the sides of the forming chamber 5. The first pickup cabin 1, the forming chamber 5 and the second pickup cabin 3 can be in a straight line shape as a whole, such as Figure 1 Alternatively, an angle may be provided between the line connecting the first pickup chamber 1 and the forming chamber 5 and the line connecting the second pickup chamber 3 and the forming chamber 5. For example, the angle may be a right angle. The structural diagram is shown in FIG. Figure 7 For another example, when there are three pickup cabins, the pickup cabins can be arranged around the forming chamber, and the structural diagram thereof is as follows: Figure 8 shown.

[0028] For example, when the pickup cabin is equipped with the forming chamber in a many-to-many manner, the pickup cabin includes at least 3 mutually independent pickup cabins; the forming chamber 5 includes at least 2 mutually independent forming chambers; the 3 pickup cabins and the 2 forming chambers are arranged alternately. The additive printing device with the pickup cabin can be a straight-line structure as a whole, and its structural diagram is as follows: Fig. 9 As shown; or, the additive printing device with the pickup cabin can be in a matrix shape as a whole, and its structural diagram is as follows Fig.10 shown.

[0029] In order to better illustrate the working method of the present invention, two pickup chambers and one forming chamber are taken as an example for detailed description:

[0030] With the improvement of the printing efficiency of the forming chamber and the gradual increase in the volume of complex products that can be produced, the printing time has been less than or close to the pickup time. In order to solve this problem, see Figure 1The utility model provides an additive printing device with a pickup cabin, which is a two-to-one printing device formed by combining a forming chamber with two pickup cabins, including a first pickup cabin 1, a first forming cylinder assembly 2, a second pickup cabin 3, a second forming cylinder assembly 4 and a forming chamber 5; wherein the first pickup cabin 1 and the second pickup cabin 3 are arranged on opposite sides of the forming chamber 5, and the first pickup cabin 1, the forming chamber 5 and the second pickup cabin 3 form a straight-line structure as a whole, and a horizontal moving shaft (exemplarily, a steel rail type X-axis 6 can be used) is provided between the first pickup cabin 1 and the forming chamber 5 and between the second pickup cabin 3 and the forming chamber 5, and the pickup cabin and the forming chamber 5 are connected to each other through the horizontal moving shaft to achieve good cooperation. wherein the first forming cylinder assembly 2 includes a forming cylinder and a driving member, the forming cylinder is placed on the horizontal moving shaft, the driving member is connected to the forming cylinder and drives the forming cylinder to move freely on the horizontal moving shaft. The forming cylinder in the first forming cylinder assembly 2 includes a cylinder body and a Z-direction drive. When the first forming cylinder assembly 2 is located below the forming chamber 5 or below the first pickup cabin 1, the Z-direction drive drives the cylinder body to rise and fall freely in the height direction. During specific operation, when the first forming cylinder assembly 2 is below the forming chamber 5, the cylinder body of the forming cylinder in the first forming cylinder assembly 2 rises and falls freely in the height direction of the forming chamber 5. After the forming work is completed, the forming cylinder is driven by the driving member to move from the forming chamber 5 to the first pickup cabin 1. When the first forming cylinder assembly 2 moves to the first pickup cabin 1, the forming cylinder rises and falls freely in the height direction of the first pickup cabin 1 to complete the pickup work. It should be noted that the structure of the first forming cylinder assembly 2 is exactly the same as that of the second forming cylinder assembly 4. During specific operation, when the second forming cylinder assembly 4 is below the forming chamber 5, the forming cylinder in the second forming cylinder assembly 4 can be freely raised and lowered in the height direction of the forming chamber 5. After completing the forming work, the forming cylinder is driven by the driving member to move from the forming chamber 5 to the second pickup cabin 3. When the second forming cylinder assembly 4 moves to the second pickup cabin 3, the forming cylinder can be freely raised and lowered in the height direction of the second pickup cabin 3 to complete the pickup work.

[0031] See also Figure 1 , using the two-to-one printing device provided above, the first forming cylinder assembly 2 is moved into the bottom of the forming chamber 5 through the X-axis 6 to print the first batch of products. When printing is completed, the first forming cylinder assembly 2 is moved back to the first pickup cabin 1 through the X-axis 6 to clean the powder and pick up the items; at this time, the second forming cylinder assembly 4 is moved into the bottom of the forming chamber 5 through the X-axis 6 to print the second batch of products. When printing is completed, the second forming cylinder assembly 4 is moved back to the second pickup cabin 3 through the X-axis 6 to clean the powder and pick up the items. By analogy, the two forming cylinder assemblies are reciprocated back and forth to perform alternating printing, which can ensure that the forming chamber is not idle waiting for work, and at the same time, the phenomenon of the printed products waiting to be picked up is avoided. The operation is carried out continuously, and the utilization rate and continuity of the pickup cabins (the first pickup cabin 1 and the second pickup cabin 3) and the forming chamber 5 are improved.

[0032] In response to the production phenomenon mentioned above where the printing time is less than the pickup time, through theoretical experiments, some production situations where the printing time is less than the pickup time will occur, as well as the phenomena that occur when using a two-to-one printing device, are listed, as shown in Table 1.

[0033] Table 1. Number of days the two-to-one printing equipment operates in printing mode

[0034] Serial number Printing time (days) Pickup time (days) Repeat period (days) Common pickup days for pickup cabins 1 1 2 3 1 2 2 3 5 1 3 3 4 7 1 4 2 4 6 2 5 3 6 9 3

[0035] When the printing time is shorter than the pickup time, if a one-to-one printing device is used, the forming room will be idle; if a one-to-two printing device is used, the forming room will also be idle due to the need to wait for pickup. The many-to-one or many-to-many printing devices provided in this solution can effectively improve the utilization rate of the forming room, reduce the idle time of the forming room, and thus improve printing production efficiency.

[0036] See also Figure 2 As for No. 1 in Table 1, when the printing time is 1 day and the pickup time is 2 days, if a one-to-one printing device is used, the forming room will be idle for 2 days waiting for work; if a one-to-two printing device is used, the printed products will be stranded for at least 2 days waiting to be picked up. However, by using the two-to-one printing device provided by the utility model, the forming room is idle for only 1 day in each cycle, thereby reducing the idle time of the forming room, increasing the utilization rate of the forming room, and improving the continuity and efficiency of printing production.

[0037] See also Figure 3 As for No. 2 in Table 1, when the printing time is 2 days and the pickup time is 3 days, if a one-to-one printing device is used, the forming room will be idle for 3 days waiting for work; if a one-to-two printing device is used, the printed products will be stranded for 3 days waiting to be picked up. The two-to-one printing device provided by the utility model can reduce the idle time of the forming room, increase the utilization rate of the forming room, and improve the continuity and efficiency of printing production.

[0038] See also Figure 4 And number 3 in Table 1, when the printing time is 3 days and the pickup time is 4 days, if a one-to-one printing device is used, the forming room will be idle for 4 days waiting for work; if a one-to-two printing device is used, the printed products will be stranded for 4 days waiting to be picked up. The two-to-one printing device provided by the utility model can reduce the idle time of the forming room, increase the utilization rate of the forming room, and improve the continuity and efficiency of printing production.

[0039] See also Figure 5As for number 4 in Table 1, when the printing time is 2 days and the pickup time is 4 days, if a one-to-one printing device is used, the forming room will be idle for 4 days waiting for work; if a one-to-two printing device is used, the printed products will be stranded for 4 days waiting to be picked up. The two-to-one printing device provided by the utility model can reduce the idle time of the forming room, increase the utilization rate of the forming room, and improve the continuity and efficiency of printing production.

[0040] See also Figure 6 As for No. 5 in Table 1, when the printing time is 3 days and the pickup time is 6 days, if a one-to-one printing device is used, the forming room will be idle for 6 days waiting for work; if a one-to-two printing device is used, the printed products will be stranded for 6 days waiting to be picked up. The two-to-one printing device provided by the utility model can reduce the idle time of the forming room, increase the utilization rate of the forming room, and improve the continuity and efficiency of printing production.

[0041] Obviously, when the printing time is less than the pickup time, the two-to-one printing device provided by the utility model can ensure that after entering the printing cycle, there are always two devices, one forming room and two pickup cabins, working uninterruptedly, thereby improving the utilization efficiency of the forming room and the pickup cabin.

Claims

1. An additive printing device with a pickup cabin, comprising a forming chamber (5) and a pickup cabin, characterized in that: The number of the pickup cabins is greater than the number of the forming chambers (5); the pickup cabins are equipped with the forming chambers (5) in a many-to-one manner or in a many-to-many manner.

2. The additive printing device with a pickup cabin according to claim 1, characterized in that: When the pickup cabin is equipped with the forming chamber (5) in a many-to-one manner, the pickup cabin at least includes a first pickup cabin (1) and a second pickup cabin (3), and the first pickup cabin (1) and the second pickup cabin (3) are respectively arranged on the peripheral side of the forming chamber (5).

3. The additive printing device with a pickup cabin according to claim 2, characterized in that: The first pickup chamber (1), the forming chamber (5) and the second pickup chamber (3) are in a straight line shape as a whole.

4. The additive printing device with a pickup cabin according to claim 2, characterized in that: An angle is provided between a line connecting the first pickup chamber (1) and the forming chamber (5) and a line connecting the second pickup chamber (3) and the forming chamber (5).

5. The additive printing device with a pickup cabin according to claim 1, characterized in that: When the pickup cabin is equipped with the forming chamber (5) in a many-to-many manner, the pickup cabin includes at least three mutually independent pickup cabins; the forming chamber (5) includes at least two mutually independent forming chambers; the three pickup cabins and the two forming chambers are staggered.

6. The additive printing device with a pickup cabin according to claim 5, characterized in that: The additive printing device with a pickup cabin is generally in a straight line or matrix shape.

7. The additive printing device with a pickup cabin according to any one of claims 1 to 6, characterized in that: The additive printing device with a pickup cabin also includes a forming cylinder assembly that moves from below the forming chamber (5) to below the pickup cabin or from below the pickup cabin to below the forming chamber (5).

8. The additive printing device with a pickup cabin according to claim 7, characterized in that: The additive printing device with a pickup cabin also includes a horizontal movable shaft arranged between the forming chamber (5) and the pickup cabin; the forming cylinder assembly is placed on the horizontal movable shaft and moves from below the forming chamber (5) to below the pickup cabin or from below the pickup cabin to below the forming chamber (5).

9. The additive printing device with a pickup cabin according to claim 8, characterized in that: The forming cylinder assembly includes a forming cylinder and a driving member; the forming cylinder is placed on a horizontal moving axis; the driving member is connected to the forming cylinder and drives the forming cylinder to move freely on the horizontal moving axis; the forming cylinder includes a cylinder body and a Z-direction drive, and the Z-direction drive drives the cylinder body to move freely in the height direction.

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