Printing platform plate fixing device of 3D printer

Abstract

The utility model discloses a printing platform plate fixing device of a 3D printer, a printing platform plate is placed on a bearing frame, the fixing device comprises a positioning piece, a locking seat, a locking pressing block and a handle, the locking seat is fixedly connected with the bearing frame, the positioning piece and the locking seat are located on the two opposite sides of the printing platform plate, the positioning piece is used for positioning the printing platform plate, and the locking pressing block is used for locking the printing platform plate. The locking pressing block penetrates through the locking base to be connected with the handle, and the handle drives the locking pressing block to press or loosen the printing platform plate. The locking pressing block presses or loosens the printing platform plate by moving the handle, and the position of the locking pressing block is limited through the locking base. The fixing device is simple in structure and small in size, the handle is moved up and down to achieve pressing or loosening of the printing platform plate through the locking pressing block, and one-hand operation can be achieved.

Description

Technical Field

[0001] The utility model belongs to the field of 3D printing, and particularly relates to a fixing device for a printing platform plate of a 3D printer. Background Art

[0002] 3D printing is a rapid prototyping technology for manufacturing three-dimensional objects by adding materials layer by layer. The basic working principle of 3D printing is to connect a computer and a 3D printer. By controlling the printing path of the 3D printer through the computer, the three-dimensional model of the object is printed layer by layer onto the working platform, and finally an object with a three-dimensional structure is printed. The materials applicable to 3D printers are extensive, including metals, plastics, composite materials, etc.

[0003] The printing platform plate of a 3D printer is used to carry the printed object. After printing is completed, the platform needs to be disassembled to take out the printed object. Therefore, the platform needs to be easily installed and disassembled from the support bracket. To avoid the platform vibrating during printing and affecting the printing effect and printing accuracy, a latch is used to press the platform tightly. Patent CN201821477697.1 discloses a pressing component for a 3D printer printing platform. When taking out the printing platform plate, both hands need to be operated simultaneously. One hand first unscrews and disengages the ejector rod thread and then presses the front pressing plate of the platform, and the other hand takes out the printing platform plate; similarly, when placing the printing platform plate, one hand needs to press the front pressing plate of the platform first, and the other hand installs the printing platform plate, and then fastens and tightens the ejector rod thread. This device has disadvantages such as a large size of the pressing component, the need to operate both hands to take and place the printing platform, and many operating actions. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fixing device for a printing platform plate of a 3D printer, which has a simple structure, a small size, can take and place the printing platform plate with one hand, and has simple operation.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A fixing device for a printing platform plate of a 3D printer, the printing platform plate is placed on a support bracket, and the fixing device includes a positioning member, a locking seat, a locking pressing block and a handle. The locking seat is fixedly connected to the support bracket. The positioning member and the locking seat are located on opposite sides of the printing platform plate. The positioning member is used for positioning the printing platform plate. The locking pressing block penetrates through the locking seat and is connected to the handle. The handle drives the locking pressing block to press or loosen the printing platform plate. By moving the handle, the locking pressing block presses or loosens the printing platform plate, and the position of the locking pressing block is restricted by the locking seat.

[0007] Further, the locking seat is provided with an upper mounting groove and a lower mounting groove. The locking press block includes a press block body and a connecting rod. The width of the upper mounting groove is greater than that of the lower mounting groove, and the width of the press block body is greater than that of the connecting rod. The locking press block penetrates through the upper mounting groove and the lower mounting groove. A spring is sleeved on the connecting rod. One end of the spring abuts against the bottom surface of the upper mounting groove, and the other end of the spring abuts against the bottom of the press block body.

[0008] The spring sleeved on the connecting rod provides an upward thrust for the press block body. When the handle is released, the press block body remains in the state of releasing the printing platform plate under the action of the spring, which is convenient for taking out the printing platform plate.

[0009] Further, the opposite two sides of the press block body are vertical parts, and the other opposite two sides of the press block body are tapered parts.

[0010] When releasing the printing platform plate, rotate the handle to make the vertical part close to the printing platform plate, which will not restrict the taking out of the printing platform plate. When pressing the printing platform plate, rotate the handle and move it downward to make the tapered part abut against the printing platform plate to restrict the displacement of the printing platform plate.

[0011] Further, the printing platform plate is provided with a pressing groove, and the pressing groove is matched with the tapered part.

[0012] The pressing groove is also a tapered surface, and the pressing groove and the tapered part are in extrusion fit through the tapered surface.

[0013] Further, the end of the handle connected to the locking press block is a cam structure. The locking seat and the handle are connected by a pin. The cam structure rotates around the pin. The cam structure is provided with a large-diameter part and a small-diameter part.

[0014] When the press block body presses the printing platform plate, rotate the handle to make the large-diameter part of the cam structure abut against the bottom of the locking seat. When the press block body releases the printing platform plate, rotate the handle to make the small-diameter part of the cam structure close to the bottom of the locking seat.

[0015] Further, the positioning member is a positioning pin. The positioning pin is fixed to the supporting bracket. The printing platform plate is provided with a positioning groove, and the positioning groove is matched with the positioning pin. The positioning pin is provided with a tapered part.

[0016] The positioning pin is also provided with a tapered part. The settings of the positioning pin and the positioning groove limit the displacement of the printing platform plate in the horizontal and vertical directions.

[0017] Due to the adoption of the above technical solutions, the utility model has the following beneficial effects:

[0018] 1. By moving the handle, the locking press block can be used to press or release the printing platform plate, and it can be operated with one hand.

[0019] 2. The spring and cam structure are arranged to keep the locking block in a clamped or released state, facilitating the installation and removal of the printing platform plate. When removing the printing platform plate, loosen the cam in the vertical direction. Under the action of the spring force, the cam always contacts the bottom surface of the locking seat, causing the locking block to automatically move upward, making it convenient to remove.

[0020] 3. Both the block body and the positioning pin are provided with tapered surfaces. Under the action of the locking block, the displacement of the printing platform plate in the horizontal and vertical directions is restricted, making the fixing of the printing platform plate reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following further describes the present utility model with reference to the drawings.

[0022] Figure 1 It is a schematic structural diagram of the printing platform plate fixing device when the locking block is released.

[0023] Figure 2 It is a schematic structural diagram of the printing platform plate fixing device when the locking block rotates to align the tapered surface with the pressing groove.

[0024] Figure 3 It is a schematic structural diagram of the printing platform plate fixing device when the locking block presses the printing platform plate.

[0025] Figure 4 It is Figure 3 The enlarged schematic diagram at position A in

[0026] Figure 5 It is a sectional view of the printing platform plate fixing device.

[0027] Figure 6 It is Figure 5 The enlarged schematic diagram at position B in

[0028] Figure 7 It is a schematic structural diagram of the positioning pin and the positioning groove.

[0029] Figure 8 It is an exploded view of the fixing device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] As Figures 1 to 4 shown, a fixing device for the printing platform plate of a 3D printer. The printing platform plate 1 is placed on the support bracket 2. The fixing device includes a locking seat 3, a locking block 4, and a handle 5. The locking seat 3 is fixedly connected to the support bracket 2. The locking block 4 passes through the locking seat 3 and is connected to the handle 5 through a pin 6.

[0031] As Figure 5 and Figure 6As shown, the locking seat 3 is provided with an upper mounting groove 7 and a lower mounting groove 8, and the upper mounting groove 7 communicates with the lower mounting groove 8. The locking pressing block 4 includes a pressing block body 41 and a connecting rod 42. The width of the pressing block body 41 is greater than that of the connecting rod 42. The width of the upper mounting groove 7 is greater than that of the lower mounting groove 8. The locking pressing block 4 penetrates through the upper mounting groove 7 and the lower mounting groove 8. A spring 9 is sleeved on the connecting rod 42. One end of the spring 9 abuts against the bottom surface of the upper mounting groove 7, and the other end of the spring 9 abuts against the bottom of the pressing block body 41.

[0032] As Figure 7 shown, the two opposite sides of the pressing block body 41 are vertical portions 411, and the other two opposite sides of the pressing block body 41 are tapered portions 412. As Figures 1 to 3 shown, the printing platform plate 1 is provided with a pressing groove 10, and the pressing groove 10 is matched with the tapered portion 412. The pin 6 is fixed by a screw 11.

[0033] As Figure 6 and Figure 7 shown, one end of the handle 5 connected to the locking pressing block 4 is a cam structure 12. The cam structure 12 rotates around the pin 6. The cam structure 12 is provided with a large-diameter portion 121 and a small-diameter portion 122.

[0034] As Figure 1 and Figure 8 shown, the support bracket 2 is provided with a positioning pin 13, and the printing platform plate 1 is provided with a positioning groove 14. The positioning groove 14 and the pressing groove 10 are respectively located on opposite sides of the printing platform plate 1. The positioning groove 14 is matched with the positioning pin 13. The positioning pin 13 is also provided with a tapered portion 131. The number of the positioning grooves 14 is not limited, and can be 1 or 2 or more. Figure 1 In

[0035] As Figure 1 shown, when installing the printing platform plate 1, the positioning groove 14 is aligned with the positioning pin 13, and the printing platform plate 1 is placed on the support bracket 2. At this time, the vertical portion 411 of the locking pressing block 4 is closer to the pressing groove 10 of the printing platform plate 1, and the handle 5 is in the x-axis direction.

[0036] As Figure 2 shown, rotate the handle 5 horizontally to the left, so that the tapered portion 412 of the pressing block body 41 is aligned with the pressing groove 10. At this time, the small-diameter portion 122 of the cam structure 12 of the handle 5 is closer to the locking seat 3.

[0037] As Figures 3 to 6 shown, rotate the handle 5 vertically to the right, the locking pressing block 4 moves downward, and the tapered portion 412 of the pressing block body 41 presses the pressing groove 10 tightly. At this time, the large-diameter portion 121 of the cam structure 12 of the handle 5 abuts against the locking seat 3, and the spring 9 in the upper mounting groove 7 is squeezed by the pressing block body 41.

[0038] The process of loosening the printing platform plate 1 is the opposite of the process of installing the printing platform plate 1. The handle moves from Figure 3 state to Figure 2 and then to Figure 1 state, and the printing platform plate 1 can be taken out.

[0039] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all covered by the protection scope of the present invention.

Claims

1. A printing platform fixing device for a 3D printer, wherein the printing platform is placed on a support frame, characterized in that: The fixing device includes a positioning member, a locking seat, a locking pressure block and a handle. The locking seat is fixedly connected to the support bracket. The positioning member and the locking seat are located on opposite sides of the printing platform plate. The positioning member is used for positioning the printing platform plate. The locking pressure block passes through the locking seat and is connected to the handle. The handle drives the locking pressure block to press or release the printing platform plate.

2. A printing platform fixing device for a 3D printer according to claim 1, characterized in that: The locking seat is provided with an upper mounting groove and a lower mounting groove, the locking pressure block includes a pressure block body and a connecting rod, the width of the upper mounting groove is greater than that of the lower mounting groove, the width of the pressure block body is greater than that of the connecting rod, the locking pressure block passes through the upper mounting groove and the lower mounting groove, the connecting rod sleeve is provided with a spring, one end of the spring is against the bottom surface of the upper mounting groove, and the other end of the spring is against the bottom of the pressure block body.

3. A printing platform fixing device for a 3D printer according to claim 2, characterized in that: Two opposite sides of the pressing block body are vertical parts, and the other two opposite sides of the pressing block body are conical parts.

4. A printing platform fixing device for a 3D printer according to claim 3, characterized in that: The printing platform plate is provided with a pressing groove, and the pressing groove matches the conical surface portion.

5. The printing platform fixing device of a 3D printer according to claim 1, characterized in that: One end of the handle connected to the locking pressure block is a cam structure, the locking seat and the handle are connected through a pin, the cam structure rotates around the pin, and the cam structure is provided with a large diameter portion and a small diameter portion.

6. The printing platform fixing device of a 3D printer according to claim 1, characterized in that: The positioning member is a positioning pin, which is fixed to the support bracket. The printing platform plate is provided with a positioning groove, which matches the positioning pin, and the positioning pin is provided with a conical surface portion.

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