An intelligent automatic molding device for mold-free particle injection

Abstract

The present invention discloses a mold-free particle injection intelligent automatic molding device, comprising a machine body, a printing substrate is installed inside the bottom of the machine body through a track, and a printing seat is installed in the machine body through a multi-axis driving frame, and a feed pipe and a print head are installed at the upper and lower positions of the printing seat respectively; it also includes a mounting plate, the mounting plate is installed in the internal cavity of the printing seat through an electric push rod, and a pressing plate is arranged at the bottom of the mounting plate, and a guide hopper is fixed on the top of the mounting plate, and a sealing plate is installed at the side wall of the cavity in the middle of the mounting plate and the pressing plate through a first spring embedded sliding, and an opening and closing component is arranged between the mounting plate and the top of the inside of the printing seat, and the opening and closing component is used to realize the opening and closing of the sealing plate. The mold-free particle injection intelligent automatic molding device can stably extrude particles and stably supplement particles at the same time to ensure the integrity of printing.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to an intelligent automatic molding device for mold-free particle injection. Background Art

[0002] 3D printing is an unconventional mold-free forming technology, which is suitable for the processing of workpieces with complex structures. The main body uses hot melt spraying technology to spray and shape the molten material in a layered manner. The raw materials are mainly provided in the form of particles and wire bundles. However, the existing 3D printing forming devices have the following problems when used:

[0003] Existing 3D printing molding devices are not convenient for stable conveying and feeding amount control of granular materials. Unlike the conveying method of wire harnesses, most of them require extrusion and spraying. At the same time, due to the different sizes and gaps of granular materials, the feed amount per unit time is also different. During the subsequent hot melt and extrusion conveying, the volume will change. This change will easily cause unstable flow during spraying and molding, which can easily lead to defects in the molded workpiece, affecting its subsequent use.

[0004] In view of the above problems, it is urgently necessary to carry out innovative design based on the original 3D printing molding device. Summary of the invention

[0005] The purpose of the present invention is to provide a mold-free particle injection intelligent automatic molding device to solve the problem that the existing 3D printing molding device proposed in the above background technology is not convenient for stable transportation and feeding amount control of granular materials. The technical solution of the present invention provides a solution that is significantly different from the existing technology for the technical problem that the existing technology solution is too single.

[0006] To achieve the above object, the present invention provides the following technical solution: a mold-free particle injection intelligent automatic molding device, comprising a body, a printing substrate is installed inside the bottom of the body through a track, and a printing seat is installed in the body through a multi-axis driving frame, a feed pipe and a print head are respectively installed at the upper and lower positions of the printing seat, and a solenoid valve is installed on the feed pipe;

[0007] It also includes a mounting plate, which is mounted on the inner cavity of the printing base through an electric push rod, and a pressing plate is arranged at the bottom of the mounting plate, and a guide hopper is fixed on the top of the mounting plate, a sealing plate is slidably mounted on the side wall of the cavity in the middle of the mounting plate and the pressing plate through a first spring embedded, and a cross bar is fixed on the outer end of the sealing plate, an elastic telescopic rod is connected between the mounting plate and the inner cross bar of the pressing plate, an opening and closing component is arranged between the mounting plate and the top of the inside of the printing base, and the opening and closing component is used to realize the opening and closing of the sealing plate;

[0008] A feed cavity is provided through the top of the printing base, and a material guide ball is arranged in the feed cavity, and a hollow mounting frame is arranged at the bottom of the material guide ball, and a position adjustment component is arranged between the material guide ball and the hollow mounting frame and between the mounting plate and the pressure plate, and the position adjustment component is used to adjust the position of the material guide ball according to the degree of compression of the granular material.

[0009] Preferably, an electromagnet is fixed to the bottom of the mounting plate, and a metal block is arranged inside the electromagnet, and the metal block is fixed on the pressing plate, the electromagnet and the metal block are arranged to overlap each other, and the electromagnet is used to magnetically adsorb the metal block.

[0010] Preferably, the sealing plates are evenly distributed at angles in the mounting plate and the pressing plate, and are designed as fan-shaped structures, and the closed sealing plates seal the central cavities of the mounting plate and the pressing plate.

[0011] Preferably, the opening and closing assembly includes a guide column, which is fixed at the top inside the printing base, and a guide rod is slidably arranged in the bottom cavity of the guide column, a guide head is fixed on the outside of the guide rod, and the guide head is located in a guide groove, and the guide groove is opened at the side wall of the bottom cavity of the guide column, a gear is fixed at the bottom of the guide rod, and a gear ring is meshed on the inner side of the gear, and the gear ring and the gear are both embedded and movable in the mounting plate, and a push piece is fixed on the inner wall of the gear ring.

[0012] Preferably, the guide head slides in the guide groove, and the upper part of the guide groove is designed as a spiral structure, and the lower part of the guide groove is designed as a vertical structure.

[0013] Preferably, the distribution position of the push piece corresponds to the distribution position of the cross bar, and the inner wall of the push piece is designed to be an inclined arc structure.

[0014] Preferably, the cross-section of the feed cavity is designed to be an isosceles trapezoidal structure, and the width at the center of the feed cavity is the same as the diameter of the guide ball.

[0015] Preferably, the position adjustment assembly includes a first oil tank, which is fixed at the bottom edge of the mounting plate, and a first piston rod is connected to the inside of the first oil tank via a second spring, and the first piston rod is fixed at the top edge of the pressure plate, the first oil tank is connected to the second oil tank via a hose, and the second oil tank is fixed at the top of the middle part of the hollow mounting frame, a second piston rod is installed in the second oil tank, and the second piston rod is fixed to the bottom of the guide ball.

[0016] Preferably, the second piston rod and the first piston rod have the same moving direction, and the guide ball on the second piston rod corresponds to the position of the guide hopper.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention sets an opening and closing assembly so that when the mounting plate is in the upper position, the sealing plate is in the open state. When the mounting plate and the pressing plate move downward, the sealing plate is closed by the downward stroke and power, and the hot-melt particles at the bottom are squeezed so that they can be ejected and formed through the print head. In this process, the material feeding and pressing operations can be realized by the up and down movement of the mounting plate, and the process is simple and has high sustainability.

[0019] 2. In the process of feeding and pressing, the present invention causes instability in the feeding amount due to different particle sizes and different gaps between particles. When the mounting plate maintains a constant displacement, the pressure plate is forced to move its position, and the position of the guide ball can be adjusted by the position adjustment component. Therefore, in each process of feeding and pressing, the particles can be stably replenished to avoid uneven material ejected from the print head. That is, in conventional operation, the feeding amount per unit time is different due to the influence of particle size and gaps, and the amount of hot melt consumed during extrusion and discharge molding is also different. The present invention can replenish in time to ensure the stability of extrusion and discharge molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the front cross-section structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the printing base of the present invention;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the mounting plate and the pressing plate of the present invention;

[0023] Figure 4 This is a schematic diagram of the expanded structure of the guide groove of the present invention;

[0024] Figure 5 This is a schematic diagram of the sealing plate and gear ring structure of the present invention;

[0025] Figure 6 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0026] In the figure: 1. body; 2. printing substrate; 3. multi-axis driving frame; 4. printing seat; 5. print head; 6. feed pipe; 7. electric push rod; 8. mounting plate; 81. electromagnet; 82. metal block; 9. pressure plate; 10. guide hopper; 11. first spring; 12. sealing plate; 13. cross bar; 14. elastic telescopic rod; 15. opening and closing assembly; 151. guide column; 152. guide rod; 153. guide head; 154. guide groove; 155. gear; 156. gear ring; 157. push piece; 16. feed chamber; 17. hollow mounting frame; 18. guide ball; 19. position adjustment assembly; 191. first oil tank; 192. second spring; 193. first piston rod; 194. second oil tank; 195. second piston rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-6 The present invention provides a technical solution: a mold-free particle injection intelligent automatic molding device, a machine body 1, a printing substrate 2, a multi-axis driving frame 3, a printing seat 4, a printing head 5, a feeding pipe 6, an electric push rod 7, a mounting plate 8, an electromagnet 81, a metal block 82, a pressing plate 9, a guide hopper 10, a first spring 11, a sealing plate 12, a cross bar 13, an elastic telescopic rod 14, an opening and closing component 15, a guide column 151, a guide rod 152, a guide head 153, a guide groove 154, a gear 155, a gear ring 156, a push piece 157, a feeding cavity 16, a hollow mounting frame 17, a guide ball 18, a position adjustment component 19, a first oil tank 191, a second spring 192, a first piston rod 193, a second oil tank 194 and a second piston rod 195.

[0029] Example 1: Please refer to Figure 1-Figure 5A printing substrate 2 is installed inside the bottom of the machine body 1 through a track, and a printing base 4 is installed in the machine body 1 through a multi-axis driving frame 3, a feed pipe 6 and a print head 5 are respectively installed at the upper and lower positions of the printing base 4, and a solenoid valve is installed on the feed pipe 6; a mounting plate 8 is installed in the inner cavity of the printing base 4 through an electric push rod 7, and a pressing plate 9 is arranged at the bottom of the mounting plate 8, and a guide hopper 10 is fixed on the top of the mounting plate 8, a sealing plate 12 is embedded and slidably installed on the side wall of the cavity in the middle of the mounting plate 8 and the pressing plate 9 through a first spring 11, and a cross bar 13 is fixed on the outer end of the sealing plate 12, an elastic telescopic rod 14 is connected between the mounting plate 8 and the cross bar 13 in the pressing plate 9, an opening and closing component 15 is arranged between the mounting plate 8 and the top of the inside of the printing base 4, and the opening and closing component 15 is used to realize the opening and closing of the sealing plate 12; a feed cavity 16 is opened through the top of the printing base 4;

[0030] An electromagnet 81 is fixed to the bottom of the mounting plate 8, and a metal block 82 is arranged on the inner side of the electromagnet 81, and the metal block 82 is fixed on the pressing plate 9, the positions of the electromagnet 81 and the metal block 82 are arranged to overlap each other, and the electromagnet 81 is used to magnetically adsorb the metal block 82; the sealing plate 12 is evenly distributed at an angle in the mounting plate 8 and the pressing plate 9, and the sealing plate 12 is designed as a fan-shaped structure, and the closing sealing plate 12 closes the middle cavity of the mounting plate 8 and the pressing plate 9; the opening and closing component 15 includes a guide column 151, the guide column 151 is fixed to the top of the inside of the printing base 4, and a guide rod 152 is slidably arranged in the bottom cavity of the guide column 151, and a guide rod 152 is fixed on the outside of the guide rod 152 The guide head 153 is located in the guide groove 154, and the guide groove 154 is opened at the side wall of the bottom cavity of the guide column 151. A gear 155 is fixed to the bottom of the guide rod 152, and a gear ring 156 is meshed on the inner side of the gear 155, and the gear ring 156 and the gear 155 are embedded and movable in the mounting plate 8, and a push piece 157 is fixed on the inner wall of the gear ring 156; the guide head 153 fits and slides in the guide groove 154, and the upper half of the guide groove 154 is designed as a spiral structure, and the lower half of the guide groove 154 is designed as a vertical structure; the distribution position of the push piece 157 corresponds to the distribution position of the cross bar 13, and the inner wall of the push piece 157 is designed as an inclined arc structure;

[0031] By driving the pressure plate 9 through the mounting plate 8 and cooperating with the opening and closing of the sealing plate 12, the particles entering the lower half of the printing seat 4 can be squeezed to improve its compactness, thereby facilitating the stable ejection of the melted particles through the printing head 5 to avoid affecting the 3D printing quality.

[0032] Example 2: Based on Example 1, please refer to Figure 1-Figure 3 and Figure 6A feed cavity 16 is provided through the top of the printing base 4, and a guide ball 18 is provided in the feed cavity 16, and a hollow mounting frame 17 is provided at the bottom of the guide ball 18, and a position adjustment component 19 is provided between the guide ball 18 and the hollow mounting frame 17 and between the mounting plate 8 and the pressing plate 9, and the position adjustment component 19 is used to adjust the position of the guide ball 18 according to the degree of compression of the granular material;

[0033] The cross section of the feed chamber 16 is designed to be an isosceles trapezoidal structure, and the width at the center of the feed chamber 16 is the same as the diameter of the guide ball 18; the position adjustment component 19 includes a first oil tank 191, the first oil tank 191 is fixed at the bottom edge of the mounting plate 8, and the first oil tank 191 is connected to a first piston rod 193 through a second spring 192, and the first piston rod 193 is fixed to the top edge of the pressure plate 9, the first oil tank 191 is connected to a second oil tank 194 through a hose, and the second oil tank 194 is fixed to the top of the middle part of the hollow mounting frame 17, the second oil tank 194 is installed with a second piston rod 195, and the second piston rod 195 is fixed to the bottom of the guide ball 18; the second piston rod 195 and the first piston rod 193 have the same moving direction, and the position of the guide ball 18 on the second piston rod 195 corresponds to the position of the guide hopper 10;

[0034] On the basis that the downward position of the mounting plate 8 remains stable, the upward height of the pressing plate 9 reflects the degree to which the particles are squeezed. The position of the guide ball 18 can be adjusted by the position adjustment component 19, thereby adjusting the next feed amount, so that the amount of particles melted and squeezed at the bottom remains stable.

[0035] Working principle: When using the mold-free particle injection intelligent automatic molding device, first, according to the program setting, the printing base 4 is driven to move by the multi-axis driving frame 3, and at the same time, it is driven to move in coordination through the guide rail at the bottom of the printing substrate 2 to realize multi-axis movable printing. Through the external conveying equipment, the particles are introduced into the printing base 4 through the feed pipe 6 and the feed cavity 16, and then introduced into the lower half area of ​​the printing base 4 through the guide hopper 10 in coordination with the middle cavity of the mounting plate 8 and the pressure plate 9, and then the feed pipe 6 is closed by the solenoid valve, and the electric push rod 7 is started at the same time to push the mounting plate 8 downward. The mounting plate 8 drives the pressure plate 9 to follow the downward movement through the elastic telescopic rod 14, the first oil tank 191 and the first piston rod 193. During this process, the guide rod 152 moves in the guide column 151, and is guided by the guide head 153 and the guide groove 154. The guide rod 152 and the gear 155 are driven to rotate on the mounting plate 8, and the gear 155 drives the gear ring 156 to rotate, and the cross bar 13 is pushed to move by the push piece 157. Under the action of the elastic telescopic rod 14, the upper and lower sets of cross bars 13 move synchronously, and then the sealing plate 12 can be driven to move synchronously, so that the middle cavity of the mounting plate 8 and the pressing plate 9 is closed, and then the guide head 153 moves to the vertical area of ​​the guide groove 154, and the sealing plate 12 remains in place. When the pressing plate 9 follows the downward movement, it contacts the bottom particles and cooperates with the built-in heating device of the printing seat 4 to heat-melt the particles, and then the hot-melt particles are squeezed by the pressing plate 9 and squeezed to the print head 5 for spraying, and the molding operation is performed on the printing substrate 2. In this process, as the mounting plate 8 continues to move downward, the pressing plate 9 is subjected to the resistance of the hot-melt particles and moves upward. When the mounting plate 8 moves down to a predetermined position, the position of the pressing plate 9 feedbacks the bottom heat The position of the molten particles, the pressing plate 9 is forced to push the first piston rod 193 upward in the first oil tank 191, squeeze the oil into the second oil tank 194 and drive the guide ball 18 to move upward through the second piston rod 195, thereby changing the space size between the guide ball 18 and the feed chamber 16, and then the next time the material is discharged, the particle discharge amount can be changed within a specified time, that is, the higher the pressing plate 9 moves up, it means that there are more hot-melt particles remaining at the bottom, and the next time the material is discharged, the amount of material should be reduced accordingly, and then the electric push rod 7 drives the mounting plate 8 to move up and reset, and the electromagnet 81 is energized to magnetically adsorb the metal block 82, so that the pressing plate 9 temporarily maintains the relative position with the mounting plate 8, so that the guide ball 18 maintains the changed position to adjust the discharge amount, and at the same time, the sealing plate 12 is reset and opened under the action of the first spring 11, and the above operation is repeated to achieve continuous 3D printing operation.

[0036] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. In the description of the present invention, unless otherwise specified, "multiple" means two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mold-free particle injection intelligent automatic molding device, comprising a body (1), a printing substrate (2) is installed inside the bottom of the body (1) via a track, and a printing seat (4) is installed inside the body (1) via a multi-axis driving frame (3), a feed pipe (6) and a print head (5) are installed at the upper and lower positions of the printing seat (4), and a solenoid valve is installed on the feed pipe (6); Features: The invention also comprises a mounting plate (8), wherein the mounting plate (8) is mounted on the inner cavity of the printing seat (4) through an electric push rod (7), and a pressing plate (9) is arranged at the bottom of the mounting plate (8), and a guide hopper (10) is fixed on the top of the mounting plate (8), a sealing plate (12) is embedded and slidably mounted on the side wall of the middle cavity of the mounting plate (8) and the pressing plate (9) through a first spring (11), and a cross bar (13) is fixed to the outer end of the sealing plate (12), an elastic telescopic rod (14) is connected between the mounting plate (8) and the cross bar (13) inside the pressing plate (9), an opening and closing component (15) is arranged between the mounting plate (8) and the top of the printing seat (4), and the opening and closing component (15) is used to realize the opening and closing of the sealing plate (12), an electromagnet (81) is fixed at the bottom of the mounting plate (8), and a metal block (82) is arranged on the inner side of the electromagnet (81), and the metal block (82) is fixed on the pressing plate (81). The electromagnet (81) and the metal block (82) are arranged on the plate (9) so as to overlap each other, and the electromagnet (81) is used to magnetically adsorb the metal block (82). The opening and closing component (15) comprises a guide column (151), the guide column (151) is fixed to the top of the inside of the printing seat (4), and a guide rod (152) is slidably arranged in the bottom cavity of the guide column (151), and a guide head (152) is fixed on the outside of the guide rod (152). 3), and the guide head (153) is located in the guide groove (154), and the guide groove (154) is opened at the side wall of the bottom cavity of the guide column (151), a gear (155) is fixed to the bottom of the guide rod (152), and a gear ring (156) is meshed on the inner side of the gear (155), and the gear ring (156) and the gear (155) are embedded and movable in the mounting plate (8), and a push piece (157) is fixed on the inner wall of the gear ring (156); A feed chamber (16), the feed chamber (16) is through-opened at the top of the printing base (4), a guide ball (18) is arranged in the feed chamber (16), and a hollow mounting frame (17) is arranged at the bottom of the guide ball (18), a position adjustment component (19) is arranged between the guide ball (18) and the hollow mounting frame (17) and between the mounting plate (8) and the pressing plate (9), and the position adjustment component (19) is used to adjust the position of the guide ball (18) according to the degree of compression of the granular material, the cross-section of the feed chamber (16) is designed to be an isosceles trapezoidal structure, and the width at the center of the feed chamber (16) is the same as the diameter of the guide ball (18), and the position adjustment component (19) is used to adjust the position of the guide ball (18) according to the degree of compression of the granular material. The component (19) comprises a first oil tank (191), the first oil tank (191) being fixed at the bottom edge of the mounting plate (8), and a first piston rod (193) being connected to the first oil tank (191) via a second spring (192), and the first piston rod (193) being fixed to the top edge of the pressure plate (9), the first oil tank (191) being connected to a second oil tank (194) via a hose, and the second oil tank (194) being fixed to the top of the middle part of the hollow mounting frame (17), a second piston rod (195) being installed in the second oil tank (194), and the second piston rod (195) being fixed to the bottom of the guide ball (18).

2. The mold-free particle injection intelligent automatic molding device according to claim 1, characterized in that: The sealing plates (12) are evenly distributed at angles inside the mounting plate (8) and the pressing plate (9), and the sealing plates (12) are designed as fan-shaped structures, and the closed sealing plates (12) seal the central cavities of the mounting plate (8) and the pressing plate (9).

3. The mold-free particle injection intelligent automatic molding device according to claim 2 is characterized in that: The guide head (153) fits and slides in the guide groove (154), and the upper part of the guide groove (154) is designed as a spiral structure, and the lower part of the guide groove (154) is designed as a vertical structure.

4. The mold-free particle injection intelligent automatic molding device according to claim 3 is characterized in that: The distribution position of the push piece (157) corresponds to the distribution position of the cross bar (13), and the inner wall of the push piece (157) is designed to be an inclined arc structure.

5. The mold-free particle injection intelligent automatic molding device according to claim 4 is characterized in that: The movement directions of the second piston rod (195) and the first piston rod (193) are consistent, and the positions of the material guide ball (18) on the second piston rod (195) and the material guide hopper (10) correspond.

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