A powder cleaning device for binder injection molding blank

Abstract

The utility model discloses a powder cleaning device for a binder injection molding blank, comprising a shell, a powder blowing pipe, a powder suction pipe, a powder suction device, a cleaning platform and a plurality of ultrasonic generators, wherein the top of the shell has a compressed air interface connected to a compressed air source, and the inside of the shell has a first powder collecting tank; one end of the first powder collecting tank has a powder suction pipe interface, and the other end has a powder suction air outlet; the powder blowing pipe is installed at the inner end of the compressed air interface; the powder suction pipe is installed on the powder suction pipe interface; the powder suction device is installed inside the shell and corresponds to the position of the powder suction air outlet; the cleaning platform is installed inside the shell; a take-in and put-out port is provided on the front side plate of the shell, the take-in and put-out port corresponds to the position of the cleaning platform, a hatch is provided on the take-in and put-out port, and two operation ports are provided on the hatch; and a plurality of ultrasonic generators are installed at the bottom of the cleaning platform. The utility model can clean the powder attached to the outer surface and inner cavity surface of the blank.

Description

Technical Field

[0001] The utility model relates to the technical field of powder cleaning devices in additive manufacturing, and more specifically to a powder cleaning device for a binder injection-molded blank. Background Art

[0002] Additive manufacturing technology, also known as 3D printing technology, is a manufacturing method that directly forms products from a three-dimensional digital model by accumulating materials layer by layer. For additive manufacturing technology that forms products with powdered materials, the final product can only be obtained after cleaning the powder attached to the molded product after processing. Especially for binder jet molding technology, due to the low strength of the molded blank during the molding stage, it is difficult to clean the powder attached to the surface of the blank after molding. Especially for products with complex structures such as internal channels and lattice structures, the powder inside the blank cannot be cleaned by using traditional powder cleaning methods, which seriously limits the application of binder jet molding technology in high-difficulty and high-complexity products.

[0003] Therefore, providing a binder injection molding body powder cleaning device that is easy to clean and cleans thoroughly is a problem that those skilled in the art urgently need to solve. Utility Model Content

[0004] In view of this, the utility model provides a powder cleaning device for a binder injection molding blank, which solves the problem that the powder of a product with a complex structure formed by the binder injection molding technology is difficult to clean.

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

[0006] A powder cleaning device for a binder injection molding blank comprises a shell, a powder blowing tube, a powder suction tube, a powder absorber, a cleaning platform and a plurality of ultrasonic generators, wherein the top of the shell is provided with a compressed air interface connected to a compressed air source, and the interior of the shell is provided with a first powder collecting tank; one end of the first powder collecting tank is provided with a powder suction tube interface, and the other end is provided with a powder suction air outlet; the powder blowing tube is installed at the inner end portion of the compressed air interface; the powder suction tube is installed on the powder suction tube interface; the powder absorber is installed inside the shell and corresponds to the position of the powder suction air outlet; the cleaning platform is installed inside the shell; a take-in and put-out port is provided on the front side panel of the shell, the take-in and put-out port corresponds to the position of the cleaning platform, a hatch is provided on the take-in and put-out port, and two operation ports are provided on the hatch; and a plurality of ultrasonic generators are installed at the bottom of the cleaning platform.

[0007] By adopting the above scheme, the beneficial effects of the utility model are:

[0008] Ultrasonic vibration is used to reduce the adhesion between the powder and the green body and the compactness between the loose powder particles. Positive pressure powder blowing and negative pressure powder suction are used alternately to clean the powder attached to the outer surface and inner cavity surface of the green body.

[0009] Furthermore, the top of the shell has a dust removal device interface connected to the dust removal device.

[0010] Furthermore, the cleaning platform is installed inside the shell through an electric lifting bracket.

[0011] Furthermore, a sealing strip is installed between the cleaning platform and the inner wall of the shell.

[0012] Furthermore, it also includes a powder collection box, and a second powder collection slot is provided at the lower part of the shell; the powder collection box is inserted and installed in the shell, and the powder collection box is located below and communicated with the second powder collection slot.

[0013] Furthermore, an opening is provided at a position on the top of the shell corresponding to the first powder collecting groove, and a cover is installed on the opening by bolts.

[0014] Furthermore, a pressure regulating gauge is installed between the powder blowing tube and the inner end of the compressed air interface.

[0015] Furthermore, a powder blowing gun head is installed at the extended end of the powder blowing tube; and a powder suction gun head is installed at the extended end of the powder suction tube.

[0016] Furthermore, a filter screen is installed on the powder suction air outlet.

[0017] Furthermore, the binder injection molding body powder cleaning device also includes an ultrasonic controller, which is electrically connected to the multiple ultrasonic generators respectively; a control panel is installed on the front side panel of the shell, and the control panel is electrically connected to the powder absorber, the dust removal equipment, the ultrasonic controller and the electric lifting bracket respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 The accompanying drawing is a schematic diagram of the internal structure of a binder injection molding blank powder cleaning device provided by the utility model, which also includes an ultrasonic controller;

[0020] Figure 2 The accompanying drawing is a front view of the front side plate of the shell provided by the utility model. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-2 As shown, the embodiment of the utility model discloses a powder cleaning device for a binder injection molding blank, comprising a shell 1, a powder blowing pipe 2, a powder suction pipe 3, a powder suction device 4, a cleaning platform 5 and a plurality of ultrasonic generators 6. The top of the shell 1 is provided with a compressed air interface 11 connected to a compressed air source, and the interior of the shell 1 is provided with a first powder collecting tank 12; one end of the first powder collecting tank 12 is provided with a powder suction pipe interface, and the other end is provided with a powder suction vent; the powder blowing pipe 2 is installed at the inner end of the compressed air interface 11; the powder suction pipe 3 is installed on the powder suction pipe interface; the suction The powder collector 4 is installed inside the shell 1 and corresponds to the position of the powder suction vent. The powder collector 4 uses suction to suck the powder in the internal channel of the blank through the powder suction pipe 3 to the first powder collection tank 12; the cleaning platform 5 is installed inside the shell 1 for placing the blank 7 to be cleaned; the front side plate of the shell 1 is provided with a take-in and put-out port, which corresponds to the position of the cleaning platform 5, and a hatch 8 is installed on the take-in and put-out port, which has two operation ports 81 for manual operation; multiple ultrasonic generators 6 are installed at the bottom of the cleaning platform 5. The utility model adopts ultrasonic vibration to reduce the adhesion between the powder and the blank 7 and the compactness between the loose powder particles, and adopts positive pressure powder blowing and negative pressure powder suction to work alternately, so as to clean the powder attached to the outer surface and inner cavity surface of the blank 7.

[0023] Specifically, the top of the housing 1 is provided with a dust removal device interface 13 connected to a dust removal device. In this embodiment, the dust removal device is a dust collector.

[0024] Specifically, the cleaning platform 5 is installed inside the housing 1 through an electric lifting bracket 9. In this embodiment, the electric lifting bracket 9 can be selected as a scissor-type lifting mechanism.

[0025] In order to further optimize the technical solution of the utility model, a sealing strip 10 is installed between the cleaning platform 5 and the inner wall of the shell 1 to seal the gap of the cleaning platform 5 to prevent dust from entering.

[0026] Specifically, it also includes a powder collection box 101, and a second powder collection slot 14 is provided at the lower part of the shell 1; the powder collection box 101 is inserted and installed in the shell 1. In this embodiment, the outer side of the powder collection box 101 is connected to the shell 1 by bolts, and when the bolts are removed, the powder collection box 101 can be taken out; the powder collection box 101 is located below the second powder collection slot 14 and is connected, and a sealing strip is provided at the contact position between the outer side of the powder collection box 101 and the shell 1.

[0027] In order to further optimize the technical solution of the utility model, an opening is provided at the top of the shell 1 corresponding to the first powder collecting tank 12 , a cover is installed on the opening by bolts, and a sealing strip is installed at the contact portion between the cover and the outside of the shell 1 .

[0028] In order to further optimize the technical solution of the utility model, a pressure regulating gauge is installed between the powder blowing tube 2 and the inner end of the compressed air interface 11 to control the pressure of the compressed air.

[0029] Specifically, a powder blowing gun head 21 is installed at the extended end of the powder blowing tube 2; a powder suction gun head 31 is installed at the extended end of the powder suction tube 3. In the present embodiment, the powder suction tube 2 adopts a telescopic plastic tube, and the powder suction gun head 31 is replaceable. Gun heads of different sizes can be replaced according to the sizes of the powder suction tube 2. The gun head with a hose of a certain length can also be replaced, and the gun head can be inserted into the internal pipeline to suck out the powder.

[0030] In order to further optimize the technical solution of the utility model, a filter is installed on the powder suction vent. In this embodiment, a 1000-mesh filter is used to prevent metal powder from entering the powder absorber 4.

[0031] Specifically, a binder injection molding body powder cleaning device also includes an ultrasonic controller 102, which is electrically connected to multiple ultrasonic generators 6 respectively; a control panel 103 is installed on the front side panel of the shell 1, and the control panel 103 is electrically connected to the powder absorber 4, dust removal equipment, ultrasonic controller 102 and electric lifting bracket 9 respectively.

[0032] The working process of this utility model:

[0033] 1) Take the solidified green body 7 out of the forming cylinder. The powder on the surface of the green body 7 does not need to be cleaned. Open the hatch 8, place the uncleaned green body 7 on the cleaning platform 5, and close the hatch 8;

[0034] 2) Turn on the vacuum cleaner;

[0035] 3) After the cleaning platform 5 is raised to an appropriate position, the powder on the surface of the blank 7 is cleaned by holding the powder blowing gun head 21 through the operation port 81, and the pressure of the compressed air is controlled to be between 0.3-0.4 MPa;

[0036] 4) Turn on the ultrasonic generator 6 and adjust the frequency and amplitude of the ultrasonic wave to ensure that the strength of the ultrasonic vibration does not damage the blank 7;

[0037] 5) Open the powder suction device 4, hold the powder suction gun head 31 through the operation port 81, and suck out the powder in the pipeline. For pipelines with complex structures, the hose at the front end of the powder suction gun head 31 can be slowly extended into the pipeline to suck out the powder;

[0038] 6) After the powder is completely sucked out, use the powder blowing gun head 21 to check whether the channel is connected, and the pressure of the compressed air does not exceed 0.3MPa;

[0039] 7) Turn off the ultrasonic generator 6 and take out the cleaned green body 7.

[0040] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A powder cleaning device for binder injection molding green body, characterized in that: It includes a shell, a powder blowing tube, a powder suction tube, a powder sucker, a cleaning platform and multiple ultrasonic generators, the top of the shell is provided with a compressed air interface connected to a compressed air source, the interior of the shell is provided with a first powder collecting tank; one end of the first powder collecting tank is provided with a powder suction tube interface, and the other end is provided with a powder suction air outlet; the powder blowing tube is installed at the inner end of the compressed air interface; the powder suction tube is installed on the powder suction tube interface; the powder sucker is installed inside the shell and corresponds to the position of the powder suction air outlet; the cleaning platform is installed inside the shell; a take-in and put-out port is provided on the front side panel of the shell, the take-in and put-out port corresponds to the position of the cleaning platform, a hatch is provided on the take-in and put-out port, and two operation ports are provided on the hatch; multiple ultrasonic generators are installed at the bottom of the cleaning platform.

2. A powder cleaning device for binder injection molding blanks according to claim 1, characterized in that: The top of the shell is provided with a dust removal device interface connected with the dust removal device.

3. The binder injection molding body powder cleaning device according to claim 2, characterized in that: The cleaning platform is installed inside the shell through an electric lifting bracket.

4. A powder cleaning device for binder injection molding blanks according to claim 3, characterized in that: A sealing strip is installed between the cleaning platform and the inner wall of the shell.

5. The binder injection molding body powder cleaning device according to claim 1, characterized in that: It also includes a powder collection box, which has a second powder collection slot at the lower part of the shell. The powder collection box is inserted and installed in the shell, and the powder collection box is located below and connected to the second powder collection slot.

6. The binder injection molding body powder cleaning device according to claim 1, characterized in that: The top of the shell has an opening at a position corresponding to the first powder collecting groove, and a cover is installed on the opening through bolts.

7. The binder injection molding body powder cleaning device according to claim 1, characterized in that: A pressure regulating gauge is installed between the powder blowing tube and the inner end of the compressed air interface.

8. The binder injection molding body powder cleaning device according to claim 1, characterized in that: The extended end of the powder blowing pipe is equipped with a powder blowing gun head; the extended end of the powder suction pipe is equipped with a powder suction gun head.

9. The binder injection molding body powder cleaning device according to claim 1, characterized in that: A filter screen is installed on the powder suction air outlet.

10. The binder injection molding body powder cleaning device according to claim 3, characterized in that: The binder injection molding body powder cleaning device also includes an ultrasonic controller, which is electrically connected to the multiple ultrasonic generators respectively; a control panel is installed on the front side panel of the shell, and the control panel is electrically connected to the powder absorber, the dust removal equipment, the ultrasonic controller and the electric lifting bracket respectively.

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