Print head mounting device and 3D printing equipment

Abstract

A device for installing a print head and a 3D printing device, belonging to the field of additive manufacturing technology, is used to solve the problem of complex installation and debugging of a print head in an additive manufacturing device, comprising a base assembly, a connecting assembly (200), and an adjusting assembly (300), wherein the base assembly is arranged on the connecting assembly (200), one end of the connecting assembly (200) is connected to one end of the adjusting assembly (300), and the other end of the adjusting assembly (300) is connected to a driving mechanism; the base assembly is provided with a cavity capable of accommodating a print head (500). The present invention makes the installation of a print head for a 3D printing device simpler, and the maintenance and routine adjustment during operation are more convenient and simple, so that the manufacturing cost and operation and maintenance cost of the device are greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of additive manufacturing, and in particular to a device for additive manufacturing. Background Art

[0002] The motion system of current additive manufacturing equipment adopts the form of modules or linear motors. During the operation of the equipment, powder is easy to enter the module and / or linear motor, which will cause damage to the module and / or linear motor. In order to prevent powder from entering the module and / or linear motor during the operation of the equipment, corresponding protection is set, which makes the installation and maintenance of the equipment complicated; at the same time, it also makes the equipment larger. In addition, the installation and fixation of the print head is to fill the gap between the block and the print head with thin copper sheets and steel sheets of different thicknesses to achieve the function of fixing the print head; each time it is installed, it is necessary to try thin metal sheets of different shapes and thicknesses and find the best thickness to insert between the print head and the block to ensure that the print head is firmly fixed. Another way to fix the print head is to use a ball head plunger module to apply force to the print head and fix the print head on the mounting seat. However, this has high requirements on the stroke and processing of the ball head plunger module, and the disassembly and assembly are more cumbersome. Summary of the invention

[0003] In view of the problems of large equipment size, complicated installation and maintenance caused by the above powder requirements for the protection of the printing equipment during operation, it is necessary to propose an installation mechanism for a print head for a 3D printing device, which achieves the purpose of convenient installation of the print head, reduced overall equipment size and reduced manufacturing cost.

[0004] A device for installing a print head includes a base component, a connecting component, and an adjusting component. The base component is arranged on the connecting component, one end of the connecting component is connected to one end of the adjusting component, and the adjusting component is arranged on one side of the connecting component and connected to the connecting component; the base component is provided with a cavity that can accommodate the print head, thereby realizing the positioning and fixation of the print head.

[0005] Furthermore, the base assembly is a frame-type base assembly, which includes a frame-type fixing seat, a rotating pressure cover, and an elastic clip. The frame-type fixing seat is a rectangular structure with a certain open surface. The print head is arranged in the frame-type fixing seat, and the rotating pressure cover is arranged on the upper part of the frame-type fixing seat. The rotating pressure cover can be realized in two states: flipped up and buckled down. The rotating pressure cover is used to press the print head, thereby giving the print head a vertical downward fixed pressure; the elastic clips symmetrically arranged on the two side walls of the frame-type fixing seat are used to give the print head a horizontal fixed pressure, thereby ensuring a stable connection between the print head and the base assembly.

[0006] Furthermore, the bottom and side walls of the frame-type fixing seat are respectively provided with a plurality of positioning structures for the print head. Under the action of the rotating pressure cover, the print head can obtain accurate positioning and stable clamping force in the vertical direction.

[0007] Furthermore, the outer bottom of the frame-type fixing seat is provided with a plurality of positioning structures for positioning with the connecting assembly, and the positioning structures provided at the outer bottom of the frame-type fixing seat for positioning the connecting assembly are a plurality of bosses.

[0008] Furthermore, the elastic clamp can make the print head in close contact with the print head positioning structure arranged on the side wall of the frame fixing seat. The elastic clamp is clamped on the edge of the side wall of the frame fixing seat, and the spring piece faces the accommodating cavity of the print head.

[0009] Furthermore, the connecting component includes a connecting member and a protective member, the connecting member and the protective member are both plate-type structures as a whole, and the protective member is arranged below the connecting member, the connecting member is an L-shaped structure, and the protective member is arranged below the bottom of the L-shaped structure, the L-shaped side wall of the connecting member is connected to one end of the adjusting component, and the base assembly is located on the L-shaped connecting member, that is, the connecting component is a support for the base assembly.

[0010] Furthermore, the connecting member is provided with a plurality of positioning grooves which match with the outer bottom of the frame-type fixing seat.

[0011] Furthermore, a window for accommodating the nozzle of the print head is provided at the relative positions of the middle parts of the L-shaped connecting member and the protective member, that is, a printing operation space of the print head is reserved, thereby avoiding direct contact between the nozzle and the powder laying surface to cause wear and blockage of the print head, and playing a role in protecting the nozzle of the print head.

[0012] Furthermore, the L-shaped arm of the connecting member is provided with two symmetrically arranged protrusions for connecting with the frame-type fixing seat, so that the base assembly and the connecting assembly are firmly connected.

[0013] The adjustment component is an L-shaped plate, and the horizontal arm of the adjustment component of the L-shaped plate is connected to the operating mechanism of the 3D printing device, and the vertical arm of the adjustment component of the L-shaped plate is connected to the vertical arm of the connecting component in the connecting component, thereby fixing the two together. The motion mechanism drives the print head by driving the adjustment component, that is, realizes the action of printing operation.

[0014] Furthermore, the vertical arm of the adjustment component of the L-shaped plate and the vertical arm of the connecting component in the connecting component are both provided with a plurality of positioning holes, and the two are connected to different positioning holes, so that the relative distance of the print head relative to the molding space can be adjusted.

[0015] As an improvement of the present technical solution, the base assembly is a plate-type base assembly, and the plate-type base assembly includes a plate-type fixing seat, a plate-type pressing plate and an elastic clamp. The plate-type fixing seat is provided with a first positioning structure and a second positioning structure for supporting and positioning the print head. The first positioning structure is used to support the print head, so that the print head has a certain distance from the powder-laying mask and is used to support the print head, that is, the print head is located on the first positioning structure; the second positioning structure is a two-step structure, which is used to form a relative direction tightening force on the print head relative to the first positioning structure, so that the print head can be stably placed in the plate-type fixing seat. The plate-type pressing plate is buckled on the plate-type fixing seat and fixed by bolts; the elastic clamp is arranged on one side of the plate-type pressing plate relative to the plate-type fixing seat, which is used to clamp the print head so that the print head can be firmly attached to the plate-type fixing seat. Furthermore, in order to enhance the fixing or positioning effect on the print head, a third positioning structure with an inclined surface is also provided on the plate-type pressing plate, and the third positioning structure exerts a clamping force on the print head. Furthermore, the first positioning structure is divided into two parts, and the space reserved between the two parts is the ejection window of the ejection port of the print head; the first positioning structure can also be provided with a certain surrounding structure to prevent the print head from deviating outward.

[0016] Beneficial effects of the technical solution of the present invention: The installation device described in the present invention simplifies the problem of constantly adjusting the positioning and distance during the installation of the print head by setting up a base assembly, thereby improving the installation efficiency of the print head and reducing the operational difficulty of print head maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of a mounting device for a print head;

[0018] Figure 2 is a schematic diagram of the base assembly structure;

[0019] Figure 3 It is a schematic diagram of the elastic card structure;

[0020] Figure 4 is a schematic diagram of a structural diagram of connected components;

[0021] Figure 5 It is a schematic diagram of the axial structure of another mounting device for a print head;

[0022] Figure 6 It is a schematic diagram of the plate type pressure plate structure;

[0023] Figure 7 1. It is a schematic diagram of the structure of the plate type fixing seat;

[0024] Among them, 100-frame base assembly; 110-frame fixing seat; 120-rotating pressure cover; 130-elastic clamp; 200-connecting assembly; 210-connecting piece; 220-protective piece; 300-adjusting assembly; 400-plate base assembly; 410-plate fixing seat; 411-first positioning structure; 412-second positioning structure; 420-plate pressure plate; 421-third positioning structure; 500-print head. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the technical solution of the present invention, the technical solution of the invention content is described in detail in conjunction with the accompanying drawings. Obviously, the following descriptions are some typical embodiments of the present invention. For ordinary technicians in this field, other solutions can be obtained based on these embodiments without paying creative work.

[0026] A 3D printing device includes a print head assembly, wherein the print head assembly includes a driving mechanism and a mounting device, wherein the mounting device is used to support and fix the print head, and the driving mechanism is used to drive the print head to complete the print head operation. The mounting device is connected to the driving mechanism, and the driving mechanism drives the print head to move by driving the mounting device.

[0027] Implementation method 1:

[0028] like Figures 1 to 4As shown, a mounting device for a print head 500 is provided, the mounting device comprising a frame base assembly 100, a connecting assembly 200 and an adjusting assembly 300; the frame base assembly 100 is located on the connecting assembly 200, and the two are fixed with bolts; one end of the adjusting assembly 300 is connected to the connecting assembly 200 by bolts, and the other end of the adjusting assembly 300 is connected to the driving mechanism in the print head 500 assembly. The frame base assembly 100 includes a frame fixing seat 110, which is a rectangular structure with a certain open surface. The internal space of the rectangular structure is the accommodating space of the print head 500, which is used to support and position the print head 500, and a window is provided at the bottom of the frame fixing seat 110, and the window is used for the print head 500 to spray ink toward the powder-laying surface through the nozzle; in order to enable the frame fixing seat 110 to be stably seated on the connecting assembly 200, a concave-convex matching mechanism is respectively provided at the bottom of the frame fixing seat 110 and on the connecting assembly 200, so as to play a role in positioning and stabilizing; the connecting assembly 200 includes a connecting member 210 and a protective member 220, and the connecting member 210 is a plate member of an L-shaped structure, and the frame fixing seat 110 is located in the L-shaped structure, and the two are positioned by the concave-convex structure on the bottom arm of the L-shaped structure and fixedly connected by the side wall of the L-shaped structure, so that the frame fixing seat 110 is stably connected to the On the connecting component 200; the protective member 220 is arranged on the other surface connected to the frame fixing seat 110, on the one hand, it plays a role in strengthening the bottom arm of the connecting member 210, and on the other hand, it plays a role in increasing the distance between the injection port window and the powder spreading surface, that is, windows are also provided on the bottom arm of the connecting member 210 and the protective member 220 at the position opposite to the window on the frame fixing seat 110, and the three layers of windows constitute an ink landing window of a certain thickness for the print head 500 to spray ink; the adjusting component 300 is also an L-shaped structure, one end of the adjusting component 300 is connected to the vertical arm of the connecting member 210, and the other end is connected to the driving mechanism of the print head 500 assembly; further, the surface where the adjusting component 300 and the connecting member 210 are connected to each other is provided with a plurality of groups of through holes that cooperate with each other, and the two are fixed by different through holes, so that the distance of the print head 500 relative to the powder spreading surface can be adjusted, which greatly reduces the difficulty of adjusting the distance of the print head 500 relative to the powder spreading surface.

[0029] As an optimization of this embodiment, in order to prevent the print head 500 from shaking or shifting up and down during operation, the frame-type fixing seat 110 also includes a rotating pressure cover 120, and the rotating pressure cover 120 is arranged on the top of the frame-type fixing seat 110. Specifically, the two are connected by a rotating shaft, so that the rotating pressure cover 120 can be rotated upward to open, so as to facilitate the placement of the print head 500 into the frame-type fixing seat 110; in order to enhance the pressing effect of the rotating pressure cover 120 on the print head 500, the surface of the rotating pressure cover 120 in contact with the print head 500 is set as an inclined surface, and the rotating shaft has a locking function.

[0030] As another optimization of this embodiment, in order to prevent the print head 500 from shaking or shifting left and right during operation, the frame-type fixing seat 110 also includes an elastic clamp 130, and the elastic clamp 130 is arranged on the two side walls of the frame-type fixing seat 110 and is symmetrically positioned.

[0031] As another optimization of this embodiment, a positioning boss for the print head 500 is provided at the bottom of the frame-type fixing seat 110 to fix the print head 500 at a certain position; an elastic pressing sheet is provided on the inner wall of the side arm relative to the connecting piece 210 to squeeze the print head 500 toward the positioning boss to avoid shaking and displacement in the corresponding direction.

[0032] Embodiment 2:

[0033] like Figures 5 to 7 The figure is a schematic diagram of the structure of the plate-type base assembly in use state. The plate-type base assembly 400 includes a plate-type fixing seat 410 and a plate-type pressing plate 420. The two can be connected by bolts to form a complete plate-type base assembly 400 with a space for accommodating the print head 500. The plate-type fixing seat 410 is provided with a first positioning structure 411 and a second positioning structure 412 for supporting and positioning the print head 500. The first positioning structure 411 is used to support the print head 500 so that the print head 500 is at a certain distance from the powder-laying mask and to support the print head 500, that is, the print head 500 is located on the first positioning structure 411; the second positioning structure 412 is a step structure, which is used to form a fastening force and a supporting force on the print head 500 in a relative direction relative to the first positioning structure 411, so that the print head 500 can be stably placed in the plate-type fixing seat 410. Furthermore, the first positioning structure 411 is divided into two parts, and the space left between the two parts is the ejection window reserved for the ejection port of the print head 500; the first positioning structure 411 can also be provided with a certain surrounding structure to prevent the print head 500 from deviating outward.

[0034] As an optimization of this embodiment, in order to enhance the fixing or positioning effect on the print head 500 , a third positioning structure 421 with an inclined surface is further provided on the plate-type pressing plate 420 , and the third positioning structure 421 applies a clamping force to the print head 500 .

[0035] As another optimization of this embodiment, an elastic clamp 130 is further provided on the plate type pressing plate 420 to press the print head 500 onto the plate type fixing seat 410 .

[0036] Through the implementation of the technical solution of the present invention, the installation of the print head for 3D printing equipment is simpler, and maintenance and routine adjustments during operation are more convenient and simpler, so that the manufacturing cost and operation and maintenance cost of the equipment are greatly reduced.

[0037] The above embodiments are merely descriptions of a typical application of the technical solution of the present invention, and reasonable expansion can be carried out on a reasonable basis without requiring creative work.

Claims

1. A device for installing a print head, characterized in that: The invention comprises a base component, a connecting component (200), and an adjusting component (300), wherein the base component is arranged on the connecting component (200), one end of the connecting component (200) is connected to one end of the adjusting component (300), and the other end of the adjusting component (300) is connected to a 3D printing device; the adjusting component (300) is used to adjust the distance between a print head (500) and a powder spreading surface; the base component is provided with a cavity capable of accommodating the print head (500), and the base component is provided with a plurality of positioning structures for supporting and positioning the print head (500); The base assembly is a frame-type base assembly (100), the frame-type base assembly (100) comprising a frame-type fixing seat (110), the frame-type fixing seat (110) being a rectangular parallelepiped structure with a certain open surface, the internal space of the rectangular parallelepiped structure being a storage space for the print head (500); a window is provided at the bottom of the frame-type fixing seat (110); a positioning boss for the print head (500) is provided at the bottom of the interior of the frame-type fixing seat (110), the positioning boss being used to fix the print head (500) at a determined position; an elastic pressing sheet is provided on the inner wall of a side arm relative to the connecting member (210) to squeeze the print head (500) towards the positioning boss; The connection assembly (200) comprises a connection member (210) and a protection member (220); the connection member (210) is a plate member of an L-shaped structure; the frame-type fixing seat (110) is located in the L-shaped structure; the two are positioned by a concave-convex structure on the bottom arm of the L-shaped structure and fixedly connected by a side wall of the L-shaped structure; the protection member (220) is arranged on another surface connected to the frame-type fixing seat (110); windows are also arranged on the bottom arm of the connection member (210) and the protection member (220) at locations corresponding to the windows on the frame-type fixing seat (110); the three layers of windows constitute an ink landing window with a certain thickness for the print head (500) to spray ink; A plurality of groups of through holes that cooperate with each other are provided on the surface where the adjustment component (300) and the connecting member (210) are connected to each other, and the adjustment component (300) and the connecting member (210) are fixed through different through holes to achieve adjustment of the distance of the print head (500) relative to the powder spreading surface.

2. The print head mounting device according to claim 1, characterized in that: The bottom of the frame-type fixing seat (110) and the connecting assembly (200) are respectively provided with concave and convex matching mechanisms.

3. The print head mounting device according to claim 2, characterized in that: The frame-type fixing seat (110) further comprises a rotating pressing cover (120), wherein the rotating pressing cover (120) is arranged on the top of the frame-type fixing seat (110) via a rotating shaft.

4. The print head mounting device according to claim 3, characterized in that: The frame-type fixing seat (110) further comprises an elastic clamping member (130), wherein the elastic clamping member (130) is arranged on two side walls of the frame-type fixing seat (110) and is symmetrically positioned.

5. A 3D printing device, characterized in that: A mounting device comprising a print head as described in any one of claims 1-4.

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