Double-head collaborative direct-writing type 3D printer

Abstract

The utility model relates to the technical field of 3D printing equipment, in particular to a double-head collaborative direct-writing type 3D printer. The 3D printer comprises a rack, a first movement mechanism, a second movement mechanism, a double-end cooperation mechanism and a printing platform, the first movement mechanism and the second movement mechanism are both arranged on the rack, the double-end cooperation mechanism is connected with the first movement mechanism, the printing platform comprises a bottom plate and a printing base plate, the bottom plate is connected with the second movement mechanism, and a supporting table is arranged on the bottom plate; a plurality of locking mechanisms are further arranged on the bottom plate, each locking mechanism comprises a locking pressing plate and a lifting device, the locking pressing plates are of a strip-shaped structure, through holes matched with the locking pressing plates are formed in the positions, corresponding to the locking mechanisms, of the printing base plate, the lifting devices are fixed to the lower side of the bottom plate, and the lifting ends of the lifting devices penetrate to the position above the bottom plate; and the locking pressing plate is rotatably connected with the lifting end part of the lifting device. According to the 3D printer, the printing base plate can be quickly disassembled and assembled on the bottom plate by adjusting the locking mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing equipment, and in particular to a double-head collaborative direct-writing 3D printer. Background Art

[0002] 3D printing (also known as additive manufacturing) technology has developed rapidly in the entire manufacturing science field with its advantages such as no need for molds, ability to form any complex structure, integrated design and manufacturing, flexible and rapid forming process, and low labor intensity. It has now quickly entered the stage of large-scale industrial practical application from the conceptual stage and small batch sample testing stage. Among them, slurry direct writing 3D printing technology has the advantages of high freedom in material composition design, simple process, easy operation, low equipment cost, and environmental protection. It is widely used in the fields of special-shaped components, personalized gradient materials, and personalized food printing.

[0003] For example, the patent with announcement number CN220594069U discloses a dual-head collaborative direct-writing 3D printing device, including a frame, a first motion mechanism and a second motion mechanism arranged on the frame, a dual-head collaborative mechanism connected to the first motion mechanism, a printing platform connected to the second motion mechanism, and an air pressure control system. The dual-head collaborative mechanism includes two print heads and two slide cylinders. The print head includes a barrel and an outer cylinder. The two print heads are respectively installed on the sliders of the two slide cylinders; one output branch of the air pressure control system is connected to the barrel in one of the print heads and its corresponding slide cylinder, and the other output branch is connected to the barrel in the other print head and its corresponding slide cylinder.

[0004] The dual-head collaborative mechanism of the above-mentioned device includes two printing nozzles, which can carry out personalized gradient material printing and complex suspended component printing; an air pressure control system is used to synchronously control the feeding and lifting of the printing nozzles, thereby realizing the dual printing nozzle switching operation.

[0005] However, in the above device, the printing platform is fixed to the platform bracket by a leveling assembly, which includes bolts, nuts and springs. The bolts pass through the printing platform, springs and platform bracket from top to bottom and are connected to the nuts. Therefore, the printing platform cannot be quickly disassembled. As a result, after printing is completed, the process of cleaning the printing platform will be limited by the internal space of the frame and is not easy to carry out. Moreover, after one print is completed, it is necessary to wait until the printing platform is cleaned before continuing the next print, which greatly affects the processing efficiency. Utility Model Content

[0006] The purpose of the utility model is to provide a dual-head collaborative direct-writing 3D printer in view of the existing technical status, which can quickly complete the disassembly and assembly of the printing substrate on the bottom plate by adjusting the locking mechanism.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A dual-head collaborative direct-writing 3D printer, comprising a frame, a first motion mechanism, a second motion mechanism, a dual-head collaborative mechanism and a printing platform;

[0009] The first motion mechanism and the second motion mechanism are both arranged on a frame;

[0010] The double-headed cooperative mechanism is connected to the first motion mechanism, and the first motion mechanism is used to drive the double-headed cooperative mechanism to move horizontally or vertically on the frame;

[0011] The printing platform is connected to a second motion mechanism, and the second motion mechanism is used to drive the printing platform to move vertically on the frame;

[0012] The printing platform includes a base plate and a printing substrate, the base plate is connected to the second motion mechanism, a support platform is provided on the base plate, the support platform is used to place the printing substrate on the base plate and allow a gap between the two, and a plurality of locking mechanisms are also provided on the base plate, the locking mechanism includes a locking pressure plate and a lifting device, the locking pressure plate is a strip structure, and a through hole adapted to the locking pressure plate is provided at a position corresponding to each locking mechanism on the printing substrate, the lifting device is fixed on the lower side of the base plate, and its lifting end portion passes through the top of the base plate, and the locking pressure plate is rotatably connected to the lifting end portion of the lifting device.

[0013] Furthermore, the support platform includes two positioning platforms arranged in parallel on the base plate, the positioning platforms are L-shaped structures, and the two positioning platforms form a stepped slot extending along the front-to-back direction on the base plate. The stepped slot is used to place the printed substrate on the base plate and to have a gap therebetween, while limiting the printed substrate in the lateral direction on the base plate.

[0014] Furthermore, two elastic positioning pins are provided between the locking pressure plate and the lifting end of the lifting device, one of which is clamped and positioned when the locking pressure plate is rotated to be flush with the corresponding through hole, and the other elastic positioning pin is clamped and positioned when the locking pressure plate is rotated to be non-flush with the corresponding through hole.

[0015] Furthermore, the locking pressure plate is rotatably connected to the lifting end of the lifting device via a bearing.

[0016] Furthermore, the through holes provided on the locking pressure plate and the printing substrate are both waist-shaped structures.

[0017] Furthermore, the lifting device is a lifting cylinder, the cylinder body of the lifting cylinder is fixed on the lower side of the base plate, and its piston rod extends to the top of the base plate, and the locking plate is rotatably connected to the front end of the piston rod in the lifting cylinder.

[0018] Furthermore, a pull-out structure is provided on the front side of the printing substrate, and the pull-out structure is used to pull the printing substrate out of the stepped slot.

[0019] Furthermore, the pull-out structure is a pull-out hole arranged on the front side of the printing substrate.

[0020] The beneficial effects of the utility model are:

[0021] Compared with the existing technology, the printing platform of its dual-head collaborative direct writing 3D printing device consists of a base plate and a printing substrate, and a support platform and a locking mechanism are provided on the base plate. The printing substrate is locked on the support platform by the locking mechanism, and the printing substrate can be quickly disassembled and assembled on the base plate by adjusting the locking mechanism. According to the above design, on the one hand, after printing is completed, the printing substrate can be removed and cleaned to avoid being limited by the internal space of the frame. On the other hand, after one printing is completed, a new printing substrate can be replaced to continue the next printing, thereby improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of a dual-head collaborative direct-writing 3D printer of the utility model;

[0023] Figure 2 This is a side view of a dual-head collaborative direct-writing 3D printer of the utility model;

[0024] Figure 3 It is a structural schematic diagram of a printing substrate in a dual-head collaborative direct-writing 3D printer of the utility model.

[0025] Label instructions: 1. Frame, 2. First motion mechanism, 3. Second motion mechanism, 4. Double-head cooperative mechanism, 5. Bottom plate, 6. Positioning table, 7. Printing substrate, 7-1. Through hole, 7-2. Pull-out hole, 8. Lifting device, 9. Locking pressure plate. DETAILED DESCRIPTION

[0026] The utility model will be further described below in conjunction with the accompanying drawings.

[0027] See also Figures 1 to 3 As shown, a dual-head collaborative direct-writing 3D printer includes a frame 1, a first motion mechanism 2, a second motion mechanism 3, a dual-head collaborative mechanism 4 and a printing platform.

[0028] The first motion mechanism 2 and the second motion mechanism 3 are both arranged on the frame 1 .

[0029] The double-headed cooperative mechanism 4 is connected to the first motion mechanism 2, and the first motion mechanism 2 is used to drive the double-headed cooperative mechanism 4 to move horizontally or vertically on the frame 1. The first motion mechanism 2 is a common driving mechanism and will not be described in detail here.

[0030] The printing platform is connected to the second motion mechanism 3, and the second motion mechanism 3 is used to drive the printing platform to move vertically on the frame 1. The second motion mechanism 3 is a common driving mechanism and will not be described in detail here.

[0031] The printing platform includes a base plate 5 and a printing substrate 7. The base plate 7 is connected to the second motion mechanism 3. A support platform is provided on the base plate 5. The support platform is used to place the printing substrate 7 on the base plate 5 and to provide a gap between the two. A plurality of locking mechanisms are also provided on the base plate 5. The locking mechanisms include a locking pressure plate 9 and a lifting device 8. The locking pressure plate 9 is a strip structure. A through hole 7-1 matching the locking pressure plate 9 is provided at a position corresponding to each locking mechanism on the printing substrate 7. The lifting device 8 is fixed on the lower side of the base plate 5, and its lifting end portion passes through the top of the base plate 5. The locking pressure plate 9 is rotatably connected to the lifting end portion of the lifting device.

[0032] In the above technical solution, as one of the preferred embodiments, the support table includes two positioning tables 6 arranged in parallel on the base plate 5, the positioning tables 6 are L-shaped structures, and the two positioning tables 6 form a stepped slot extending along the front and rear directions of the base plate 5, and the stepped slot is used to place the printed substrate on the base plate 5 and to provide a gap therebetween, while limiting the printed substrate 7 in the lateral direction on the base plate 5.

[0033] In the above technical solution, as another preferred embodiment, two elastic positioning pins (not shown in the figure) are provided between the locking plate 9 and the lifting end of the lifting device 8, one of which is clamped and positioned when the locking plate 9 is rotated to be flush with the corresponding through hole 7-1, and the other is clamped and positioned when the locking plate 9 is rotated to be non-flush with the corresponding through hole 7-1. When the two elastic positioning pins are clamped and positioned respectively, the locking plate 9 generally rotates 90°.

[0034] In this embodiment, the locking plate 9 is rotatably connected to the front end of the piston rod of the lifting device 8 through a bearing; the through holes provided on the locking plate 9 and the printing substrate 5 are both waist-shaped structures; the lifting device 8 is a lifting cylinder, the cylinder body of the lifting cylinder 8 is fixed on the lower side of the base plate, and its piston rod extends to the top of the base plate, and the locking plate 9 is rotatably connected to the front end of the piston rod in the lifting cylinder.

[0035] In addition, as another preferred embodiment, a pull-out structure is provided on the front side of the printed substrate 7, and the pull-out structure is used to pull the printed substrate 7 out of the stepped slot.

[0036] In this embodiment, the pull-out structure is a pull-out hole 7 - 2 arranged on the front side of the print substrate 7 .

[0037] In general, the printing platform of the utility model is composed of a bottom plate 5 and a printing substrate 7, and a support platform and a locking mechanism are provided on the bottom plate 5. The printing substrate 7 is locked on the support platform by the locking mechanism, and the printing substrate 7 can be quickly disassembled and assembled on the bottom plate 5 by adjusting the locking mechanism. The disassembly and assembly process is as follows:

[0038] During installation, the printed substrate 7 is placed into the stepped slot. In each locking mechanism, the lifting device 8 is started, and the locking pressure plate 9 is lifted from the bottom of the printed substrate 7 to the top through the through hole 7-1 provided on the printed substrate 7. The locking pressure plate 9 is manually rotated to make it non-aligned with the corresponding through hole 7-1, and then the locking pressure plate 9 is lowered to a certain height, thereby pressing the printed substrate 7.

[0039] During removal, in each locking mechanism, the lifting device 8 is started to lift the locking pressure plate 9 to a certain height, and the locking pressure plate 9 is manually rotated to make it flush with the corresponding through hole 7-1. Then, through the through hole 7-1 provided on the printing substrate 7, the locking pressure plate 9 is lowered from above the printing substrate 7 to below it, and then the printing substrate 7 can be removed.

[0040] The advantages of the above design are as follows: on the one hand, after printing is completed, the printing substrate 7 can be removed and cleaned, thereby avoiding the limitation of the internal space of the frame 1; on the other hand, after one printing is completed, a new printing substrate 7 can be replaced to continue the next printing, thereby improving processing efficiency.

[0041] Of course, the above are only preferred implementations of the present utility model, and are not intended to limit the scope of use of the present utility model. Therefore, any equivalent changes made to the principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A dual-head collaborative direct-writing 3D printer, characterized in that: It includes a frame, a first motion mechanism, a second motion mechanism, a double-head coordination mechanism and a printing platform; The first motion mechanism and the second motion mechanism are both arranged on a frame; The double-headed cooperative mechanism is connected to the first motion mechanism, and the first motion mechanism is used to drive the double-headed cooperative mechanism to move horizontally or vertically on the frame; The printing platform is connected to a second motion mechanism, and the second motion mechanism is used to drive the printing platform to move vertically on the frame; The printing platform includes a base plate and a printing substrate, the base plate is connected to the second motion mechanism, a support platform is provided on the base plate, the support platform is used to place the printing substrate on the base plate and allow a gap between the two, and a plurality of locking mechanisms are also provided on the base plate, the locking mechanism includes a locking pressure plate and a lifting device, the locking pressure plate is a strip structure, and a through hole adapted to the locking pressure plate is provided at a position corresponding to each locking mechanism on the printing substrate, the lifting device is fixed on the lower side of the base plate, and its lifting end portion passes through the top of the base plate, and the locking pressure plate is rotatably connected to the lifting end portion of the lifting device.

2. A dual-head collaborative direct writing 3D printer according to claim 1, characterized in that: The support platform includes two positioning platforms arranged in parallel on the bottom plate. The positioning platforms are L-shaped structures. The two positioning platforms form a stepped slot extending along the front-to-back direction on the bottom plate. The stepped slot is used to place the printed substrate on the bottom plate and leave a gap therebetween, while limiting the printed substrate in the lateral direction on the bottom plate.

3. A dual-head collaborative direct writing 3D printer according to claim 1, characterized in that: Two elastic locating pins are provided between the locking pressure plate and the lifting end of the lifting device, one of which is clamped and positioned when the locking pressure plate is rotated to be flush with the corresponding through hole, and the other elastic locating pin is clamped and positioned when the locking pressure plate is rotated to be non-flush with the corresponding through hole.

4. A dual-head collaborative direct writing 3D printer according to claim 3, characterized in that: The locking pressure plate is rotatably connected to the lifting end of the lifting device through a bearing.

5. A dual-head collaborative direct writing 3D printer according to claim 1, characterized in that: The through holes arranged on the locking pressing plate and the printing base plate are both waist-shaped structures.

6. A dual-head collaborative direct writing 3D printer according to claim 1, characterized in that: The lifting device is a lifting cylinder, the cylinder body of the lifting cylinder is fixed on the lower side of the base plate, and its piston rod extends to the top of the base plate. The locking plate is rotatably connected to the front end of the piston rod in the lifting cylinder.

7. A dual-head collaborative direct writing 3D printer according to claim 2, characterized in that: A pull-out structure is provided on the front side of the printing substrate, and the pull-out structure is used to pull the printing substrate out of the stepped slot.

8. A dual-head collaborative direct writing 3D printer according to claim 7, characterized in that: The draw-out structure is a draw-out hole arranged on the front side of the printing substrate.

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