A precision stabilizing shock absorbing support structure for a 3D printer

Abstract

The present application relates to the technical field of shock absorption, and discloses a precision stabilizing and shock absorbing support structure of a 3D printer, which comprises a printing mechanism, a first hydraulic device, a control panel, a printing table and a main body frame. In the present application, the stress structure is balanced left and right under the support of the blocking plate. At this time, the stress structure generates counterclockwise upward prying force on the blocking plate. The blocking plate supports the upward prying force of the stress structure and absorbs the vibration generated in the movement of the stress structure, thereby forming the effect of supporting the movement of the printing head and absorbing the vibration. The stress bar is supported on the inner side of the shell under the elasticity of the elastic layer. When the stress bar and the inner side of the shell move and rub, the elastic layer absorbs the resonance force, so that the shock absorbing rod absorbs the vibration force of the guide frame moving up and down on the round rod, thereby avoiding the vibration influence on the horizontal and vertical movement of the printing head, and preventing the problem of inaccurate printing of the 3D printing product caused by friction resonance.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction technology, specifically a precision-stabilized vibration reduction support structure for a 3D printer. Background Technology

[0002] When printing products, 3D printers move the material horizontally and vertically to form a 3D product through rapid cooling. During the 3D printing process, the nozzle (extruder) needs to perform high-speed and frequent reciprocating motion in the X and Y axis directions. This rapid acceleration and deceleration will generate strong mechanical vibration. The vibration damping support structure in 3D printers is mainly to suppress the vibration generated during high-speed operation, thereby ensuring printing accuracy, improving printing quality, and reducing the impact of noise on the operating environment.

[0003] A patent application (CN201920556737.X) for a high-precision 3D printer with a shock-absorbing structure mentions using springs to buffer vibrations and protect the printer as a whole. However, during printing, the printer needs to move laterally and longitudinally, as well as adjust its height. During lateral and longitudinal movements, gap friction can easily occur at the sliding position of the guide rail support. This gap friction creates resonance that directly affects the print head. Therefore, the invention cannot directly dampen the printing position, affecting the accuracy of the printed product. Furthermore, during the printing lifting process, the lifting needs to move along the guide rail to provide stability for the height adjustment. This movement along the guide rail can easily cause vibrations in the lateral and longitudinal movements of the upper print head, resulting in unstable lifting. Summary of the Invention

[0004] This invention provides a precision-stabilized and shock-absorbing support structure for 3D printers, which overcomes the shortcomings described in the background art.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] A precision-stabilizing and shock-absorbing support structure for a 3D printer includes a printing mechanism, a first hydraulic actuator, a control panel, a printing table, and a main frame. The control panel is located at the outer end of the main frame, the printing mechanism is installed inside the main frame, and the printing table is fixedly located inside the main frame, with the printing table corresponding to the position below the printing mechanism. The first hydraulic actuator is located at the bottom of the main frame, and its output end is connected to the lower end of the printing mechanism. The control panel controls the hydraulic extension and retraction of the first hydraulic actuator via an electrical signal, and drives the printing mechanism to slide and rise along the inner side of the main frame via the output end of the first hydraulic actuator.

[0007] The printing mechanism includes a shock-absorbing mechanism, a moving mechanism, a guide frame, a roll plate, and a guide rail. There are two shock-absorbing mechanisms, which are symmetrically distributed on the inside of the guide frame. The roll plate is correspondingly installed inside the two shock-absorbing mechanisms and extends to the left and right sides of the moving mechanism for pulling and translating. The left and right ends of the guide rail are correspondingly connected to the sides of the two shock-absorbing mechanisms. The roll plate pulls the moving mechanism inside the shock-absorbing mechanism, and the moving mechanism moves horizontally inside the guide rail while maintaining a vertically downward state.

[0008] The moving mechanism includes a print head, a force-bearing structure, a baffle plate, and a connecting plate. The connecting plate is inclinedly connected to the side of the print head and connected to the outer end of the force-bearing structure. The baffle plate is fixed to the side of the guide rail by threads, and the inner side of the baffle plate supports the force-bearing structure to press against the guide rail, allowing the force-bearing structure to slide against the guide rail. Under the weight of the print head, the force-bearing structure forms a lever balance on the inner side of the guide rail.

[0009] Furthermore, the force-bearing structure includes a circular bar, a force-bearing block, and an elastic plate. The left end of the force-bearing block is connected to a connecting plate. The circular bar is disposed on the side of the force-bearing block and slides on the inner side of the guide rail. The elastic plate is fixed on the inner side of the barrier plate and slides on the surface of the elastic plate on the side of the force-bearing block. Under the elastic force of the elastic plate, the force-bearing block is pressed against the inner side of the guide rail by the circular bar, and the force-bearing block supports the weight of the print head at the left end of the connecting plate with the circular bar as the center point.

[0010] Furthermore, the elastic plate is provided with a slider, a support plate and a spring. The slider is provided on the side of the support plate, and the side of the support plate is provided with a spring connected to the side of the barrier plate. The elasticity of the spring causes the slider to press against the side of the force block. The force block slides on the surface of the slider, and the vibration force generated by the translation of the force block is transmitted to the spring for elastic absorption.

[0011] Furthermore, the shock absorption mechanism includes a housing, a telescopic rod, a second hydraulic actuator, a shock absorber, and a motor. The second hydraulic actuator is fixed inside the guide frame. The telescopic rod is located at the output end of the second hydraulic actuator and is correspondingly fixedly connected to the side of the housing. The shock absorber is fixed parallel to the side of the roll plate. The housing slides outside the shock absorber. The motor is located inside the housing, and the roll plate is connected to the output end of the motor. The two motors inside the housing are driven by electrical signals from the control panel. The output ends of the two motors are correspondingly reversed to rewind the roll plate, causing the roll plate to slide and translate within the guide rail.

[0012] Furthermore, the shock absorber has a force-bearing strip, an elastic layer, and a support rod. The bottom of the force-bearing strip is fixed inside the elastic layer, the elastic layer is attached to the outside of the support rod, the support rod is fixed inside the guide frame, the force-bearing strip is distributed in a ring around the support rod, and the shell slides on the top of the force-bearing strip, and the force-bearing strip presses against the inside of the shell under the elasticity of the elastic layer.

[0013] Compared with existing technologies, this technical solution has the following advantages:

[0014] In this invention, the force-bearing structure presses against the inner side of the guide rail. When the print head is pressed down by gravity, the inner side of the force-bearing structure presses against the inner side of the guide rail under the pressure of the barrier plate. The pressing position is the central fulcrum, so that the connecting plate and the print head form a lever arm. Then, under the support of the barrier plate, the force-bearing structure achieves left and right balance. At this time, the force-bearing structure generates a counterclockwise upward prying force on the barrier plate. The barrier plate supports the upward prying force of the force-bearing structure and absorbs the vibration generated during the movement of the force-bearing structure, thus forming the effect of supporting the movement of the print head and absorbing vibration.

[0015] In this invention, the shock-absorbing rod passes entirely through the interior of the housing. When the housing is pushed longitudinally by the telescopic rod, the force-bearing strip abuts against the inner side of the housing under the elasticity of the elastic layer. The housing moves on the outside of the force-bearing strip. The elasticity of the elastic layer allows the force-bearing strip to absorb resonance force when it rubs against the inner side of the housing, preventing vibration when the housing moves longitudinally. The guide rail fixed to the side of the housing guides the movement of the print head. Thus, the shock-absorbing rod absorbs the vibration force of the guide frame moving up and down on the round rod, avoiding vibration affecting the lateral and longitudinal movement of the print head and preventing the problem of inaccurate printing when the print head is 3D printed due to frictional resonance. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is an overall diagram of the present invention.

[0018] Figure 2 This is a side view of the printing mechanism.

[0019] Figure 3 This is a side view of the moving mechanism.

[0020] Figure 4 This is a side view of the structure under stress.

[0021] Figure 5 This is a three-dimensional schematic diagram of an elastic plate.

[0022] Figure 6 This is a partial top view of the shock absorption mechanism.

[0023] Figure 7 This is a side view of the shock absorber bar.

[0024] In the diagram: Printing mechanism-1, First hydraulic unit-2, Control panel-3, Printing table-4, Main frame-5, Shock absorption mechanism-11, Moving mechanism-12, Guide frame-13, Roll plate-14, Guide rail-15, Print head-121, Force-bearing structure-122, Barrier plate-123, Connecting plate-124, Round bar-1221, Force-bearing block-1222, Elastic plate-1223, Sliding bar-231, Support plate-232, Spring-233, Housing-111, Telescopic rod-112, Second hydraulic unit-113, Shock absorption rod-114, Motor-115, Force-bearing bar-1141, Elastic layer-1142, Support rod-1143. Detailed Implementation

[0025] like Figures 1 to 7 As shown, this invention proposes a precision-stabilized and shock-absorbing support structure for a 3D printer, including a printing mechanism 1, a first hydraulic actuator 2, a control panel 3, a printing table 4, and a main frame 5. The control panel 3 is located at the outer end of the main frame 5, the printing mechanism 1 is installed inside the main frame 5, and the printing table 4 is fixedly located inside the main frame 5, with the printing table 4 corresponding to the position below the printing mechanism 1. The first hydraulic actuator 2 is located at the bottom of the main frame 5, and the output end of the first hydraulic actuator 2 is connected to the lower end of the printing mechanism 1. The control panel 3 controls the hydraulic extension and retraction of the first hydraulic actuator 2 through an electrical signal, and drives the printing mechanism 1 to slide and rise along the inner side of the main frame 5 through the output end of the first hydraulic actuator 2.

[0026] The printing mechanism 1 is provided with a shock-absorbing mechanism 11, a moving mechanism 12, a guide frame 13, a roll plate 14, and a guide rail 15. There are two shock-absorbing mechanisms 11, which are symmetrically distributed on the inside of the guide frame 13. The roll plate 14 is correspondingly arranged inside the two shock-absorbing mechanisms 11 and extends to the left and right sides of the moving mechanism 12 for pulling and translating. The left and right ends of the guide rail 15 are correspondingly connected to the sides of the two shock-absorbing mechanisms 11. The roll plate 14 pulls the moving mechanism 12 inside the shock-absorbing mechanism 11, and the moving mechanism 12 moves horizontally inside the guide rail 15 while maintaining a vertically downward state.

[0027] Furthermore, the print head 121 heats the raw material input from the upper pipe and outputs it from the lower end. During the printing process, the moving mechanism 12 moves horizontally, vertically, and lifts and lowers the height in sequence to stack the product upwards.

[0028] Furthermore, the control panel 3 synchronously drives the first hydraulic unit 2 and the shock absorption mechanism 11. The guide frame 13 slides up and down along the inner side of the main frame 5, thereby adjusting the printing height of the moving mechanism 12. The first hydraulic unit 2 drives the shock absorption mechanism 11 to rewind the guide rail 15 and pull the moving mechanism 12 to move within the roll plate 14, thus achieving lateral movement of the moving mechanism 12. Through the cooperation of the first hydraulic unit 2 and the shock absorption mechanism 11, the moving mechanism 12 is printed according to the required product shape. When the moving mechanism 12 moves laterally within the roll plate 14, the gravity of the moving mechanism 12 forms a lever within the roll plate 14. The roll plate 14 supports the moving mechanism 12 by pressing it with gravity, thus avoiding frictional resonance caused by a large contact surface when the moving mechanism 12 moves laterally, achieving a shock absorption effect during printing.

[0029] The moving mechanism 12 includes a print head 121, a force-bearing structure 122, a baffle plate 123, and a connecting plate 124. The connecting plate 124 is inclinedly connected to the side of the print head 121 and connected to the outer end of the force-bearing structure 122. The baffle plate 123 is fixed to the side of the guide rail 15 by threads, and the inner side of the baffle plate 123 supports the force-bearing structure 122 to press against the guide rail 15, and makes the force-bearing structure 122 slide against the guide rail 15. The force-bearing structure 122 forms a lever balance on the inner side of the guide rail 15 under the gravity of the print head 121.

[0030] Furthermore, the force-bearing structure 122 is placed at the concave position of the guide rail 15 and is threadedly covered from the side of the guide rail 15 by the barrier plate 123. Thus, the barrier plate 123 presses against the force-bearing structure 122, making the force-bearing structure 122 easy to disassemble. In this invention, the force-bearing structure 122 presses against the inner side of the guide rail 15. When the print head 121 is pressed down by gravity, the inner side of the force-bearing structure 122 presses against the inner side of the guide rail 15 under the pressure of the barrier plate 123. The pressing position is the central fulcrum, so that the connecting plate 124 and the print head 121 form a lever arm. Then, under the support of the barrier plate 123, the force-bearing structure 122 is balanced left and right. At this time, the force-bearing structure 122 generates an upward prying force in the counterclockwise direction on the barrier plate 123. The barrier plate 123 supports the upward prying force of the force-bearing structure 122 and absorbs the vibration generated during the movement of the force-bearing structure 122, thus forming the effect of supporting the movement of the print head 121 and absorbing vibration.

[0031] The force-bearing structure 122 includes a circular bar 1221, a force-bearing block 1222, and an elastic plate 1223. The left end of the force-bearing block 1222 is connected to a connecting plate 124. The circular bar 1221 is disposed on the side of the force-bearing block 1222 and slides on the inner side of the guide rail 15. The elastic plate 1223 is fixed on the inner side of the barrier plate 123 and slides on the side of the force-bearing block 1222 corresponding to the surface of the elastic plate 1223. Under the elastic force of the elastic plate 1223, the force-bearing block 1222 presses against the inner side of the guide rail 15 through the circular bar 1221, and the force-bearing block 1222 supports the weight of the left end of the print head 121 of the connecting plate 124 with the circular bar 1221 as the center point.

[0032] Furthermore, the force-bearing block 1222 slides on the inner side of the guide rail 15 via the round bar 1221, and the round bar 1221 serves as the fulcrum for the lever movement of the force-bearing block 1222. The other side of the force-bearing block 1222 slides on the side of the elastic plate 1223, and the other sides of the force-bearing block 1222 do not contact the guide rail 15. The contact between the round bar 1221 and the elastic plate 1223 reduces the friction area of ​​the elastic plate 1223. The elastic plate 1223 reduces frictional vibration while elastically absorbing the frictional vibration resistance of the force-bearing block 1222.

[0033] The elastic plate 1223 is provided with a slide bar 231, a support plate 232 and a spring 233. The slide bar 231 is disposed on the side of the support plate 232, and the support plate 232 is provided with a spring 233 connected to the side of the barrier plate 123. The elasticity of the spring 233 causes the slide bar 231 to press against the side of the force block 1222. The force block 1222 slides on the surface of the slide bar 231, and the vibration force generated by the translation of the force block 1222 is transmitted to the spring 233 for elastic absorption.

[0034] Furthermore, the slider 231 has an arc-shaped structure, and the force-bearing block 1222 slides at the apex of the arc of the slider 231, which has the effect of reducing sliding friction. Under the elasticity of the spring 233, the slider 231 presses tightly against the side of the force-bearing block 1222, absorbing the frictional resonance when the force-bearing block 1222 moves, and preventing the frictional resonance generated by the movement of the force-bearing block 1222 from affecting the accuracy of the print head 121's movement and printing.

[0035] The shock absorption mechanism 11 includes a housing 111, a telescopic rod 112, a second hydraulic actuator 113, a shock absorber rod 114, and a motor 115. The second hydraulic actuator 113 is fixed inside the guide frame 13. The telescopic rod 112 is located at the output end of the second hydraulic actuator 113 and is correspondingly fixedly connected to the side of the housing 111. The shock absorber rod 114 is fixed parallel to the side of the roll plate 14. The housing 111 slides outside the shock absorber rod 114. The motor 115 is located inside the housing 111, and the roll plate 14 is connected to the output end of the motor 115. The two motors 115 inside the housing 111 are driven by electrical signals from the control panel 3. The output ends of the two motors 115 are correspondingly reversed to rewind the roll plate 14, causing the roll plate 14 to pull the moving mechanism 12 to slide and translate within the guide rail 15.

[0036] Furthermore, the second hydraulic unit 113 and the motor 115 are connected to the control panel 3 via electrical signals. The control panel 3 synchronously controls the second hydraulic unit 113, the motor 115, and the first hydraulic unit 2 to cooperate in creating longitudinal, lateral, and lifting effects on the print head 121, thereby enabling the print head 121 to print 3D products on the first hydraulic unit 2. During the printing process, the longitudinal movement is achieved by pushing the housing 111 through the telescopic rod 112 at the output end of the second hydraulic unit 113, causing the housing 111 to move longitudinally on the shock-absorbing rod 114. During the movement, the motors 115 on both sides synchronously rotate and rewind the roll plate 14, causing the roll plate 14 to move laterally. Printing is performed by synchronously controlling the lateral and longitudinal movements. During the longitudinal movement, the shock-absorbing rod 114 absorbs the frictional resonance of the housing 111's movement, preventing frictional resonance from affecting the printing accuracy of the print head 121.

[0037] The shock absorber 114 is provided with a force-bearing strip 1141, an elastic layer 1142, and a support rod 1143. The bottom of the force-bearing strip 1141 is fixed inside the elastic layer 1142. The elastic layer 1142 is attached to the outside of the support rod 1143. The support rod 1143 is fixed inside the guide frame 13. The force-bearing strip 1141 is distributed in a ring around the support rod 1143. The housing 111 slides on the top of the force-bearing strip 1141 and, under the elasticity of the elastic layer 1142, the force-bearing strip 1141 presses against the inside of the housing 111.

[0038] Furthermore, the guide frame 13 has a concave structure, with round rods at its four apex positions. These round rods are vertically positioned within the main frame 5, allowing the guide frame 13 to move up and down along the round rods when the output end of the first hydraulic unit 2 extends or retracts. The elastic layer 1142 is made of rubber and possesses elasticity. In this invention, the shock-absorbing rod 114 passes entirely through the interior of the housing 111. When the housing 111 is pushed longitudinally by the telescopic rod 112, the force-bearing strip 1141 abuts against the inner side of the housing 111 under the elasticity of the elastic layer 1142. 41. When the outer side moves, the elasticity of the elastic layer 1142 allows the force strip 1141 to absorb the resonance force when it moves and rubs against the inner side of the housing 111, preventing vibration when the housing 111 moves longitudinally. The guide rail 15 fixed on the side of the housing 111 guides the movement of the print head 121, thereby the shock absorber 114 absorbs the vibration force of the guide frame 13 moving up and down on the round rod, avoiding the vibration effect on the horizontal and vertical movement of the print head 121, and preventing the problem of inaccurate printing when the print head 121 is 3D printed due to friction resonance.

[0039] The above description is merely a preferred embodiment of the present invention, and therefore should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the patent and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A precision-stabilizing and vibration-damping support structure for a 3D printer, characterized in that, The device includes a printing mechanism, a first hydraulic actuator, a control panel, a printing table, and a main frame. The control panel is located at the outer end of the main frame. The printing mechanism is installed inside the main frame, and the printing table is fixedly located inside the main frame, with the printing table positioned below the printing mechanism. The first hydraulic actuator is located at the bottom of the main frame, and its output end is connected to the lower end of the printing mechanism. The control panel controls the hydraulic extension and retraction of the first hydraulic actuator via an electrical signal, and drives the printing mechanism to slide and rise along the inner side of the main frame via the output end of the first hydraulic actuator. The printing mechanism includes a shock-absorbing mechanism, a moving mechanism, a guide frame, a roll plate, and a guide rail. There are two shock-absorbing mechanisms, which are symmetrically distributed on the inside of the guide frame. The roll plate is correspondingly installed inside the two shock-absorbing mechanisms and extends to the left and right sides of the moving mechanism for pulling and translating. The left and right ends of the guide rail are correspondingly connected to the sides of the two shock-absorbing mechanisms. The roll plate pulls the moving mechanism inside the shock-absorbing mechanism, and the moving mechanism moves horizontally inside the guide rail while maintaining a vertically downward state. The moving mechanism includes a print head, a force-bearing structure, a baffle plate, and a connecting plate. The connecting plate is inclinedly connected to the side of the print head and connected to the outer end of the force-bearing structure. The baffle plate is fixed to the side of the guide rail by threads, and the inner side of the baffle plate supports the force-bearing structure to press against the guide rail, allowing the force-bearing structure to slide against the guide rail. Under the weight of the print head, the force-bearing structure forms a lever balance on the inner side of the guide rail. The force-bearing structure includes a circular bar, a force-bearing block, and an elastic plate. The left end of the force-bearing block is connected to a connecting plate. The circular bar is disposed on the side of the force-bearing block and slides on the inner side of the guide rail. The elastic plate is fixed on the inner side of the barrier plate and slides on the surface of the elastic plate on the side of the force-bearing block. Under the elastic force of the elastic plate, the force-bearing block is pressed against the inner side of the guide rail by the circular bar, and the force-bearing block supports the weight of the print head at the left end of the connecting plate with the circular bar as the center point. The elastic plate is provided with a slider, a support plate and a spring. The slider is provided on the side of the support plate, and the side of the support plate is provided with a spring connected to the side of the barrier plate. The elasticity of the spring causes the slider to press against the side of the force block. The force block slides on the surface of the slider, and the vibration force generated by the translation of the force block is transmitted to the spring for elastic absorption. The shock absorption mechanism comprises a housing, a telescopic rod, a second hydraulic actuator, a shock absorber, and a motor. The second hydraulic actuator is fixed inside the guide frame. The telescopic rod is located at the output end of the second hydraulic actuator and is correspondingly fixedly connected to the side of the housing. The shock absorber is fixed parallel to the side of the roll plate. The housing slides outside the shock absorber. The motor is located inside the housing, and the roll plate is connected to the output end of the motor. The two motors inside the housing are driven by electrical signals from the control panel. The output ends of the two motors are correspondingly reversed to rewind the roll plate, causing the roll plate to slide and translate within the guide rail.

2. The precision-stabilizing and vibration-damping support structure for a 3D printer according to claim 1, characterized in that, The shock absorber has a force-bearing strip, an elastic layer and a support rod. The bottom of the force-bearing strip is fixed inside the elastic layer. The elastic layer is attached to the outside of the support rod. The support rod is fixed inside the guide frame. The force-bearing strips are distributed in a ring around the support rod. The shell slides on the top of the force-bearing strips and the force-bearing strips press against the inside of the shell under the elasticity of the elastic layer.

Images