Material receiving device and 3D printer

Abstract

The utility model discloses a material receiving device and a 3D printer, and relates to the technical field of 3D printing, and the material receiving device comprises a base; the driving assembly is arranged on the base; the driving assembly is arranged on the base, the overturning assembly is arranged at the output end of the driving assembly, the driving assembly drives the overturning assembly to move on the base, the tray is used for bearing target materials, and the overturning assembly is in driving connection with the tray and drives the tray to overturn; and the residual material detection assembly is arranged on the tray, and the residual material detection assembly is used for detecting the target material on the tray. According to the technical scheme, bearing and transferring of target materials on the printer after separation are achieved, manual picking is not needed, operation safety is improved, the automation degree is high, and work efficiency can be improved conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing technical field, especially relate to a material receiving device and 3D printer. BACKGROUND

[0002] 3D printing is also called additive manufacturing technology, and it is a kind of technology for manufacturing entity parts according to three-dimensional CAD data through layer-by-layer material accumulation, and it is applied in the design and manufacturing fields such as jewelry design, footwear design and manufacturing, industrial manufacturing, architectural design, engineering design and construction, automobile design and manufacturing, and the medical fields such as aerospace and dentistry.In the 3D printing process, the separation of target material from the printing platform after printing is one of the key steps, especially the subsequent operation after the separation of target material, and most of the current 3D printers lack a special material receiving device, and the target material after demolding directly falls or is picked up by artificial, which has certain safety hazards and cannot meet the needs of automatic and continuous production. UTILITY MODEL CONTENT

[0003] The utility model discloses a kind of material receiving device and 3D printer, to solve the safety hazard brought by target material in the process of receiving after demolding.

[0004] To achieve the above object, the material receiving device provided by the utility model comprises:

[0005] A base;

[0006] A driving assembly is arranged in the base;

[0007] A turnover assembly is arranged at the output end of the driving assembly, and the driving assembly drives the turnover assembly to move on the base;

[0008] A tray is used to carry target material, and the turnover assembly is drivingly connected with the tray and drives the tray to overturn; and

[0009] A material detection assembly is arranged in the tray, and the material detection assembly is used to detect target material on the tray.

[0010] In an embodiment, the driving assembly comprises:

[0011] A translation module is arranged in the base;

[0012] A lifting module is drivingly connected with the turnover assembly and drives the turnover assembly to move in the vertical direction, and the translation module is drivingly connected with the lifting module to drive the lifting module and the turnover assembly to move in the horizontal direction.

[0013] In an embodiment, the turnover assembly comprises:

[0014] A mounting plate is mounted on the output end of the lifting module;

[0015] A first overturning cylinder is arranged on the mounting plate;

[0016] A second overturning cylinder is arranged on the output end of the first overturning cylinder, the first overturning cylinder drives the second overturning cylinder to rotate in the horizontal direction, the second overturning cylinder is drivingly connected with the tray and drives the tray to overturn in the vertical direction, so that the target material on the tray is transferred to the next process.

[0017] In an embodiment, the driving assembly further comprises a support seat extending in the vertical direction, the support seat is slidingly arranged on the translation module, the lifting module is mounted on the support seat, detection switches are arranged on the support seat in the vertical direction, and a stopper is arranged on the mounting plate, the detection switches are used for detecting the stopper.

[0018] In an embodiment, the tray comprises:

[0019] A bottom plate;

[0020] A baffle plate is arranged on the upper edge of the bottom plate, and the baffle plate extends away from the bottom plate;

[0021] Three baffle plates are arranged, and the baffle plates and the bottom plate form a receiving cavity with an open top and one side.

[0022] In an embodiment, the material detection assembly comprises:

[0023] An emitting sensor is mounted on the baffle plate, and the emitting sensor is used for emitting light;

[0024] A receiving sensor is mounted on the baffle plate and is used for detecting the light to detect whether the target material is left in the receiving cavity.

[0025] In an embodiment, the material detection assembly further comprises a support frame, two support frames are arranged, one end of the support frame is connected with the baffle plate, and the other end is bent, one of the support frames is used for mounting the emitting sensor, and the other support frame is used for mounting the receiving sensor.

[0026] In an embodiment, the material receiving device further comprises a supporting plate mounted on the tray.

[0027] In an embodiment, the supporting plate is provided with at least one through hole.

[0028] The utility model further provides a 3D printer which comprises the material receiving device.

[0029] The technical scheme of the utility model discloses a material receiving device, which comprises a base, a driving assembly, a turnover assembly and a tray, the turnover assembly is used for driving the tray to rotate, the driving assembly drives the turnover assembly to move on the base, and then drives the tray to move on the base, the driving assembly drives the tray to move to below the printing platform of the printer, waits for the target material on the printing platform to separate from the printing platform, the target material falls on the tray, the driving assembly drives the tray to move away from the printing platform and moves towards the next process, reaches the next process, the turnover assembly drives the tray to rotate, makes the tray change from the horizontal state to the vertical state, and the target material on the tray slides to the next process for processing, the utility model also comprises a material detection assembly, which is used for detecting whether the target material on the tray remains, avoids the target material remaining on the tray from affecting the processing of the next process, the utility model realizes the bearing and transfer of the target material after separating from the printer through the cooperation of the driving assembly, the turnover assembly and the material detection assembly, does not need manual pickup, improves the safety of operation, and is high in automation degree and convenient for improving work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the structure shown in the drawings without creative labor.

[0031] Figure 1 The structure schematic view of the material receiving device provided by the utility model is shown in the figure.

[0032] Figure 2 The structure schematic view of another embodiment of the material receiving device provided by the utility model is shown in the figure.

[0033] Figure 3 The structure schematic view of the tray provided by the utility model is shown in the figure.

[0034] Explanation of reference numerals:

[0035] 100, base;

[0036] 200, driving assembly;210, translation module;211, mounting seat;220, lifting module;221, connecting seat;230, support seat;240, detection switch;250, stop block;

[0037] 300, turnover assembly;310, first turnover cylinder;320, second turnover cylinder;330, support shaft;

[0038] 400, tray; 410, bottom plate; 420, baffle; 430, supporting plate; 431, through hole;

[0039] 500, residue detection assembly; 510, transmitting sensor; 520, receiving sensor; 530, support frame.

[0040] The purposes, functional features and advantages of the present application will be further described with reference to the accompanying drawings in conjunction with embodiments. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0042] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0043] In addition, if the present application embodiments involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel solutions are included, for example, "A and / or B" includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0044] 3D printing, also known as additive manufacturing technology, is a kind of technology for manufacturing solid parts by layer-by-layer material accumulation according to three-dimensional CAD data, which is applied in the fields of jewelry design, shoe design and manufacturing, industrial manufacturing, architectural design, engineering design and construction, automobile design and manufacturing, and the fields of aerospace, dentistry and other medical fields. In the process of 3D printing, the separation of the target material from the printing platform after printing is one of the key steps, especially the subsequent operation after the target material is separated. Most of the 3D printers at present lack a special material receiving device, and the target material after demolding directly falls or is picked up by manual operation. This process has certain safety hazards and cannot meet the needs of automatic and continuous production.

[0045] The utility model provides a kind of material receiving device and 3D printer.

[0046] Please refer to Figure 1 In an embodiment of the utility model, the material receiving device comprises:

[0047] The base 100;

[0048] The drive assembly 200 is arranged on the base 100;

[0049] The turnover assembly 300 is arranged on the output end of the drive assembly 200, and the drive assembly 200 drives the turnover assembly 300 to move on the base 100;

[0050] The tray 400 is used to carry the target material, and the turnover assembly 300 is drivingly connected with the tray 400 and drives the tray 400 to turn over; and

[0051] The material detection assembly 500 is arranged on the tray 400, and the material detection assembly 500 is used to detect the target material on the tray 400.

[0052] The utility model discloses a technical scheme, and the receiving device includes base 100, is provided with drive assembly 200, turnover assembly 300 and tray 400 on base 100, and turnover assembly 300 is used to drive tray 400 rotation, and drive assembly 200 drives and connects turnover assembly 300 and moves on base 100, and then drive tray 400 and move on base 100, drive assembly 200 drives tray 400 and moves to the printing platform below of printer, and waits the target material on printing platform and separates from printing platform, and the target material falls on tray 400, and drive assembly 200 drives tray 400 and moves away from printing platform, and moves towards next procedure, reaches next procedure, and turnover assembly 300 drives tray 400 rotation, so that tray 400 changes from horizontal state to vertical state, and the target material on tray 400 slides and falls to next procedure and is handled, and the scheme still includes the material detection component 500 for detecting whether the target material on tray 400 remains, avoids that tray 400 still has target material remaining, influences the handling of next procedure, and the scheme cooperates drive assembly 200, turnover assembly 300 and material detection component 500, realizes the carrying and transfer of target material after separating on printer, does not need manual pickup, improves the security of operation, and the automation degree is high, and it is convenient to improve work efficiency.

[0053] Specifically, the target material printed by the 3D printer needs to be sent to the cleaning device for cleaning after printing is completed, so the receiving device of the scheme needs to be arranged between the printing platform and the cleaning device, which not only carries the printed target material, but also sends it to the cleaning device for cleaning. The base 100 in the scheme extends in the horizontal direction. The base 100 can be rectangular, and its shape is not limited. The base 100 serves as the mounting support of the entire receiving device and can be made of metal, which has a certain strength. The drive assembly 200 is installed on the base 100. The drive assembly 200 is used to drive the turnover assembly 300 and the tray 400 to move between the printing platform and the cleaning device. When the target material is printed on the printing platform, the target material is demolded to separate from the printing platform. At this time, the drive assembly 200 drives the tray 400 to move below the printing platform, so that the tray 400 carries the demolded target material. The drive assembly 200 drives the tray 400 away from the printing platform and towards the cleaning device to clean the target material, such as cleaning with industrial alcohol or a dedicated cleaning agent. This is not limited here. When the tray 400 reaches the cleaning device, the turnover assembly 300 drives the tray 400 to turn over, so that the tray 400 rotates from the horizontal state to the vertical state, which makes the target material on the tray 400 separate from the tray 400 and fall on the cleaning device for cleaning. The entire process of carrying and transferring the target material does not require manual intervention, has high operation safety, and has high automation.

[0054] In the embodiment of the utility model, drive assembly 200 includes:

[0055] Translation module 210, located in base 100;

[0056] Lifting module 220 is drivenly connected with turnover assembly 300, and drives turnover assembly 300 to move along vertical direction, and translation module 210 is drivenly connected with lifting module 220, to drive lifting module 220 and turnover assembly 300 to move along horizontal direction.

[0057] Please refer to Figure 1 , drive assembly 200 includes translation module 210 and lifting module 220, translation module 210 is installed on base 100, translation module 210 can adopt linear module, and linear module is common structure, and here will not be described in detail, lifting module 220 is installed on the mounting seat 211 of translation module 210, and lifting module 220 is driven in horizontal direction through translation module 210, so that lifting module 220 moves between printing platform and cleaning device, so as to drive tray 400 to move between printing platform and cleaning device, and lifting module 220 can also adopt linear module, and turnover assembly 300 is installed on the connecting seat 221 of lifting module 220, and turnover assembly 300 and tray 400 are driven to lift in vertical direction through lifting assembly, in specific use, when target material on printing platform is finished demolding, translation module 210 drives tray 400 to move towards printing platform, until tray 400 moves to the lower side of printing platform, then according to the height of printing platform, tray 400 is driven to move through lifting module 220, so that it is just below printing platform, and it needs to avoid that the vertical distance between tray 400 and printing platform is too large, to avoid that target material falls vertically on tray 400, and target material is damaged due to the distance being too large, translation module 210 drives tray 400 to move towards cleaning device, tray 400 reaches cleaning device, lifting module 220 drives tray 400 to descend and approach cleaning device, then tray 400 becomes vertical state through turnover assembly 300, and target material on tray 400 slides into cleaning device and is cleaned, the setting of translation module 210 and lifting module 220 makes tray 400 move more flexibly, and the automatic control of lifting module 220 and translation module 210 on movement through the control device on 3D printer makes the whole process automatic and intelligent.

[0058] In the embodiment of the utility model, turnover assembly 300 includes:

[0059] Mounting plate, installed on the output end of lifting module 220;

[0060] First turnover air cylinder 310, located in mounting plate;

[0061] The second overturning cylinder 320 is arranged at the output end of the first overturning cylinder 310, the first overturning cylinder 310 drives the second overturning cylinder 320 to rotate in the horizontal direction, the second overturning cylinder 320 is drivingly connected with the tray 400, and drives the tray 400 to overturn in the vertical direction, so that the target material on the tray 400 is transferred to the next process.

[0062] Please refer to Figure 1 In order to better overturn the tray 400, the overturning assembly 300 comprises the first overturning cylinder 310 and the second overturning cylinder 320, an installation plate is arranged on the connecting seat 221 of the lifting module 220, the installation plate is horizontally arranged, the first overturning cylinder 310 is installed on the installation plate and is used for driving the second overturning cylinder 320 to rotate in the horizontal direction, and the center axis of rotation is perpendicular to the first overturning cylinder 310, so that the moving range of the tray 400 is enlarged, that is, when the tray 400 needs to carry the target material on the printing platform, the tray 400 does not need to be driven by the translation module 210 to move to the lower side of the printing platform, and can be moved to one side of the printing platform and the resin tank, and the tray 400 is driven by the first overturning cylinder 310 to rotate in the horizontal direction and to the lower side of the printing platform, that is, even if the moving range of the translation module 210 is reduced, the movement between the printing platform and the cleaning device can be realized, and the floor area is reduced; the second overturning cylinder 320 is installed on the first overturning cylinder 310 through a stand, the stand is arranged in a vertical state, the second overturning cylinder 320 is drivingly connected with the tray 400 through a support shaft 330 in a horizontal state, the second overturning cylinder 320 drives the tray 400 to rotate in the vertical direction, that is, the support shaft 330 is used as the center axis, so that the tray 400 rotates from the horizontal state to the vertical state, and then the target material in the tray 400 falls into the cleaning device, the second overturning cylinder 320 drives the tray 400 to rotate reversely, so that the tray 400 rotates to the horizontal state again and is used for carrying the target material, and the above-mentioned action is repeated to realize the carrying and transferring of the target material; the first overturning cylinder 310 and the second overturning cylinder 320 work cooperatively to realize the accurate overturning of the tray 400 in the horizontal direction and the vertical direction, meet the needs of the automatic production line, and improve the production efficiency.

[0063] In the embodiment of the utility model, the driving assembly 200 further comprises a support base 230, the support base 230 extends in the vertical direction, and the support base 230 is slidingly arranged on the translation module 210, the lifting module 220 is installed on the support base 230, detection switches 240 are arranged on the support base 230 in the vertical direction, and a stopper 250 is arranged on the installation plate, and the detection switches 240 are used for detecting the stopper 250.

[0064] Please refer to Figure 1 and Figure 2The support base 230 is installed on the mounting base 211 of the translation module 210 and slides along the horizontal direction with the movement of the translation module 210, the support base 230 is vertically arranged, the lifting module 220 is installed on the support base 230, in order to make the lifting of the tray 400 more accurate, the stop block 250 is installed on the mounting plate, and a plurality of detection switches 240 are arranged at intervals in the arrangement direction on the side of the support base 230 where the lifting module 220 is installed, the detection switches 240 are used for detecting the position of the stop block 250, when the stop block 250 passes through the detection switch 240, the detection switch 240 can be triggered, the position feedback is realized, and it can be understood that the lifting module 220 drives the turnover assembly 300 and the tray 400 to lift along the vertical direction, the stop block 250 moves together with the mounting plate, when reaching the preset height, the stop block 250 triggers the corresponding detection switch 240, and the control device of the 3D printer sends a signal to control the lifting module 220 to stop lifting, and the positioning of the tray 400 in the vertical direction is completed.

[0065] In the embodiment of the utility model, the tray 400 comprises:

[0066] The bottom plate 410;

[0067] The baffle plate 420 is arranged above the upper edge of the bottom plate 410 and extends away from the bottom plate 410;

[0068] Among them, three baffle plates 420 are arranged and enclose the top and the open receiving cavity on one side with the bottom plate 410.

[0069] Please refer to Figure 1 And Figure 3 The tray 400 comprises the bottom plate 410 and the baffle plate 420, the bottom plate 410 serves as the bearing part of the tray 400 and is used for bearing the target material printed, the material of the bottom plate 410 is preferably a material with certain strength, and the bottom plate 410 also needs to be wear-resistant and corrosion-resistant, such as aluminum alloy, the baffle plate 420 is arranged above the upper edge of the bottom plate 410 and extends away from the bottom plate 410, the baffle plate 420 is used for preventing the target material on the tray 400 from sliding off in the moving or rotating process and simultaneously provides certain protection for the target material, three baffle plates 420 enclose a top and an open receiving cavity on one side with the bottom plate 410, the top is open to facilitate bearing the target material falling from the upper printing platform, the target material can directly fall into the receiving cavity from the upper side, without complex alignment or adjustment, and can be in the receiving cavity, and the baffle plate 420 is surrounded on three sides and is open on one side, which is used for preventing the target material from sliding out of the tray 400 in the falling process into the receiving cavity, and simultaneously facilitates the target material to easily slide into the cleaning device on the open side when the tray 400 is driven to turn over by the second turnover cylinder 320, avoids manual intervention, simplifies the transfer process of the target material and improves the automation degree.

[0070] In the embodiment of the utility model, the leftover material detection assembly 500 comprises:

[0071] The emitting sensor 510 is installed on the baffle 420, and the emitting sensor 510 is used for emitting light;

[0072] The receiving sensor 520 is installed on the baffle 420 and is used for detecting light to detect whether the target material is left in the accommodation cavity.

[0073] Please refer to Figure 3 In order to detect whether the target material is left on the tray 400, the tray 400 is provided with the leftover material detection assembly 500, the leftover material detection assembly 500 comprises the emitting sensor 510 and the receiving sensor 520, the emitting sensor 510 is used for emitting light, the light can be infrared, laser or other optical signals, not limited, the emitting sensor 510 and the receiving sensor 520 are oppositely arranged, so that the receiving sensor 520 can receive the signal emitted by the emitting sensor 510, when the target material on the tray 400 has all fallen into the cleaning device, the light emitted by the emitting sensor 510 can be directly captured by the receiving sensor 520, the target material is left on the tray 400, then the light emitted by the emitting sensor 510 is blocked by the target material, and the receiving sensor 520 cannot receive the complete light signal, that is, whether the target material is left on the tray 400 can be judged by detecting whether the light is blocked, the leftover material detection assembly 500 in the scheme adopts the non-contact detection structure, avoids the physical contact of the target material, avoids damaging the just printed target material, reduces the damage risk, and the detection efficiency is high, the need of manual inspection is reduced, the error of manual operation is reduced, and the production efficiency is improved.

[0074] In the embodiment of the utility model, the leftover material detection assembly 500 further comprises a support frame 530, the support frame 530 is provided with two, one end of the support frame 530 is connected with the baffle 420, and the other end is bently arranged, one of the support frames 530 is used for installing the emitting sensor 510, and the other support frame 530 is used for installing the receiving sensor 520.

[0075] Please refer to Figure 3Two support frames 530 are respectively arranged on the two sides of the tray 400 where the transmitting sensor 510 and the receiving sensor 520 are arranged, and the two support frames 530 are respectively used for mounting the transmitting sensor 510 and the receiving sensor 520, the support frame 530 in the embodiment is in L shape, one end of the support frame 530 is arranged on the baffle 420 adjacent to the gap of the side of the tray 400, and the support frame 530 is arranged at two ends of the baffle 420, the other end of one of the support frames 530 is arranged above the opening of the side of the tray 400, and the other end of the other support frame 530 is arranged above the baffle 420 corresponding to the opening of the side of the tray 400, so as to detect whether the target material is left on the opposite sides in the accommodation cavity, the detection result is fast and accurate, and the L-shaped support frame 530 provides reasonable mounting space and mounting position for the transmitting sensor 510 and the receiving sensor 520 in the case of reducing the occupied area, and the target material is more convenient to detect.

[0076] In the embodiment of the utility model, the receiving device further includes a supporting plate 430, which is installed on the tray 400.

[0077] Please refer to Figure 3 Since the tray 400 is inconvenient to disassemble, replace and maintain, a supporting plate 430 is installed in the accommodation cavity, the supporting plate 430 is fixed on the baffle 420 by screws, the supporting plate 430 can provide a stable support platform for the target material, and if the supporting plate 430 is worn after long-term use, the supporting plate 430 can be disassembled for maintenance or replacement, which reduces the cost compared with replacing the tray 400.

[0078] In an embodiment, the supporting plate 430 is provided with at least one through hole 431, and after the target material is demolded, residual liquid material may be attached to the target material, when the target material falls on the supporting plate 430, the attached liquid can directly flow to the bottom of the tray 400 on the through hole 431, the arrangement of the through hole 431 can reduce the temperature of the target material, reduce the damage of high temperature to the tray 400, and prolong the service life.

[0079] The utility model also proposes a kind of 3D printer, including the receiving device of any one embodiment as above.The 3D printer includes receiving device, and the specific structure of the receiving device refers to above-mentioned embodiment, since the present 3D printer adopts all technical solutions of above-mentioned all embodiments, at least has all beneficial effects brought by the technical scheme of above-mentioned embodiment, here will not be repeated in detail.Wherein, 3D printer also includes printing device and cleaning device, printing device includes resin tank, printing platform and light source component, printing platform is lifted above resin tank, and target material is formed by light source component irradiation resin tank on the bottom of printing platform layer by layer solidification resin, after solidification, target material is demolded, receiving device receives target material after demolding, and it is transferred to cleaning device and is cleaned.

[0080] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, or direct / indirect application in other related technical fields, under the technical concept of the present application, using the content of the present application specification and drawings, is included in the patent protection scope of the present application.

Claims

1. A material receiving device, characterized in that, include: Base; The drive assembly is located on the base; A flipping component is located at the output end of the driving component, and the driving component drives the flipping component to move on the base. A pallet is used to carry the target material. The flipping component is connected to the pallet drive and drives the pallet to flip. as well as A material detection component is disposed on the tray, and the material detection component is used to detect target materials on the tray.

2. The material receiving device of claim 1, wherein, The driving component includes: The translation module is located on the base; The lifting module is driven and connected to the flipping component, and drives the flipping component to move in the vertical direction. The translation module is driven and connected to the lifting module, so as to drive the lifting module and the flipping component to move in the horizontal direction.

3. The material receiving device of claim 2, wherein, The flipping component includes: Mounting plate, installed at the output end of the lifting module; A first tilting cylinder is mounted on the mounting plate; The second tilting cylinder is located at the output end of the first tilting cylinder. The first tilting cylinder drives the second tilting cylinder to rotate in the horizontal direction. The second tilting cylinder is connected to the pallet drive and drives the pallet to tilt in the vertical direction so that the target material on the pallet can be transferred to the next process.

4. The material receiving device of claim 3, wherein The drive assembly further includes a support base extending vertically and slidably mounted on the translation module. The lifting module is mounted on the support base. Detection switches are spaced vertically on the support base, and stops are provided on the mounting plate. The detection switches are used to detect the stops.

5. The material receiving device of claim 1, wherein The tray includes: Base plate; A baffle is provided on the upper edge of the base plate, and the baffle extends in a direction away from the base plate; The baffle is provided in three parts, and together with the bottom plate, they form a receiving cavity that is open on the top and one side.

6. The material receiving device of claim 5, wherein, The material detection component includes: A light emission sensor is mounted on the baffle and is used to emit light. A receiving sensor is mounted on the baffle and used to detect the light to detect whether the target material is left in the containment cavity.

7. The material receiving device of claim 6, wherein, The material detection assembly also includes two support frames. One end of each support frame is connected to the baffle, and the other end is bent. One support frame is used to install the transmitting sensor, and the other support frame is used to install the receiving sensor.

8. The material receiving device of claim 1, wherein, The receiving device also includes a support plate, which is mounted on the pallet.

9. The material receiving device of claim 8, wherein, The support plate has at least one through hole.

10. A 3D printer characterized by, Includes the receiving device as described in any one of claims 1 to 9.

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