Telescopic printing head for 3D printing equipment

Abstract

The telescopic printing head for the 3D printing equipment comprises a fixing plate, a hydraulic air cylinder and a lifting plate, the end of an inner rod of the hydraulic air cylinder is fixedly installed on the lifting plate, meanwhile, a through hole formed in the surface of the lifting plate is arranged to be in sliding connection with a limiting rod, and therefore the stability of the lifting plate in the lifting process is improved through the limiting rod; meanwhile, a connecting plate is arranged between fixing blocks arranged at the bottom ends of the limiting rods, a clamping plate capable of being opened and closed is arranged on the bottom face of the connecting plate, the clamping plate is downwards extruded from a concave hole in the surface of the connecting plate through the bottom end of the printing head body, and therefore the clamping plate is opened and closed, and printing of the printing head body is facilitated; and after printing is completed, the hydraulic air cylinder drives the printing head body to move upwards, and at the moment, the clamping plate scrapes redundant materials at the bottom end of the printing head body under elastic extrusion of the springs on the two sides, so that the tidiness of the end of the printing head body is improved, and material waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing equipment, in particular to a telescopic printing head for 3D printing equipment. Background Art

[0002] 3D printing is usually achieved by using digital technology material printers. It is often used to make models in the fields of mold manufacturing, industrial design, etc., and then gradually used for the direct manufacturing of some products. There are already parts printed using this technology. This technology has been used in industrial design, architecture, engineering and construction, automobiles, aerospace, dental and medical industries, geographic information systems, civil engineering and other fields.

[0003] At present, the print heads of most 3D printing devices are fixed and cannot be raised or lowered. After printing a circle, the overall height needs to be adjusted, which takes a long time to adjust and is labor-intensive for operators. At the same time, the end of the print head of the existing 3D printing device does not have a material cutting device. When the print head is extended or retracted, the melted material inside the print head is drawn, resulting in material waste. Therefore, a retractable print head for 3D printing equipment is needed. Utility Model Content

[0004] The purpose of the utility model is to provide a retractable print head for 3D printing equipment, which is fixedly installed by setting the inner rod end of the hydraulic cylinder and the lifting plate, and the bottom surface of the lifting plate is provided with a print head body, so that the user can adjust the height of the print head body. At the same time, an openable and closable clamping plate is provided at the bottom end of the print head body, and a scraper installed inside the recess on the surface of the clamping plate scrapes off excess material solution at the bottom end of the print head body, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A telescopic print head for 3D printing equipment comprises a fixed plate, a hydraulic cylinder and a lifting plate, wherein the hydraulic cylinder is fixedly mounted on the surface of the fixed plate, and an inner rod of the hydraulic cylinder penetrates through the fixed plate and the side wall of a bracket fixedly mounted on the bottom surface of the fixed plate and is fixedly mounted on the surface of the lifting plate, a feeder body is arranged on the bottom surface of the lifting plate, through holes are symmetrically provided on the surface of the lifting plate on both sides of the feeder body, limiting rods are symmetrically provided on the bottom surface of the bracket, the side walls of the limiting rods are slidably connected to the inner walls of the through holes, and a fixing block is provided on the bottom surface of the limiting rods, a heating block body is arranged on the bottom of the feeder body, a threaded hole is provided on the bottom surface of the heating block body, and the threaded hole is threadedly connected to the print head body.

[0007] Preferably, the lengths of the two groups of limit rods are respectively greater than the length of the print head body after installation, and the two groups of fixing blocks are both located below the bottom end of the print head body.

[0008] Preferably, the side walls between the two groups of fixing blocks are fixedly mounted on the connecting plate respectively, a concave hole is opened on the surface of the connecting plate, and the inner wall of the concave hole is in conflict with the bottom side wall of the print head body.

[0009] Preferably, springs are symmetrically arranged on the bottom and side walls of the connecting plate, and opposite ends of the springs are fixedly mounted on the side walls of the clamping plate, respectively. The top surface of the clamping plate is slidably connected to the bottom surface of the connecting plate.

[0010] Preferably, the opposite side walls of the two groups of clamps are respectively provided with notches, and the side walls of the notches are slidably connected to the bottom end of the print head body.

[0011] Preferably, the inner bottom surfaces of the two groups of recesses are both provided with scrapers, and the scrapers are slidably connected to the bottom side wall of the print head body.

[0012] Preferably, the original length of the spring is greater than half the length of the connecting plate.

[0013] Preferably, mounting holes are respectively provided on the surface of the fixing plate on both sides of the hydraulic cylinder.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model arranges the inner rod end of the hydraulic cylinder to be fixedly installed with the lifting plate, and at the same time arranges a through hole opened on the surface of the lifting plate to be slidably connected with the limit rod, so as to ensure the stability of the lifting and lowering adjustment of the print head body by the limit rod, and at the same time a connecting plate is arranged between the fixed blocks arranged at the bottom end of the limit rod, and an openable and closable clamping plate is arranged on the bottom surface of the connecting plate, and the clamping plate is squeezed downward from the concave hole on the surface of the connecting plate through the bottom end of the print head body, so that the clamping plate is opened and closed to facilitate printing by the print head body, and after printing is completed, the print head body is driven to move upward by the hydraulic cylinder, and at this time, the clamping plate scrapes off the excess material at the bottom end of the print head body under the elastic force of the springs on both sides, so as to increase the neatness of the end of the print head body and avoid material waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall perspective structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the overall split structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the threaded hole structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the bottom structure of the connecting plate of the utility model;

[0021] Figure 6 This is a schematic diagram of the notch and scraper position structure of the utility model.

[0022] In the figure: 1. fixing plate; 2. hydraulic cylinder; 3. mounting hole; 4. bracket; 5. lifting plate; 6. feeder body; 7. through hole; 8. limit rod; 9. heating block body; 10. print head body; 11. fixing block; 12. connecting plate; 13. threaded hole; 14. recessed hole; 15. spring; 16. clamping plate; 17. recess; 18. scraper. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 6 , the utility model provides a technical solution:

[0025] A telescopic print head for 3D printing equipment includes a fixed plate 1, a hydraulic cylinder 2 and a lifting plate 5. The hydraulic cylinder 2 is fixedly installed on the surface of the fixed plate 1. At the same time, the inner rod of the hydraulic cylinder 2 penetrates the fixed plate 1 and the side wall of the bracket 4 fixedly installed on the bottom surface of the fixed plate 1 and is fixedly installed on the surface of the lifting plate 5. A feeder body 6 is arranged on the bottom surface of the lifting plate 5. Through holes 7 are symmetrically opened on the surface of the lifting plate 5 on both sides of the feeder body 6. Limit rods 8 are symmetrically arranged on the bottom surface of the bracket 4. The side walls of the limit rods 8 are slidably connected to the inner walls of the through holes 7. The bottom surfaces of the limit rods 8 are all provided with fixed blocks 11. A heating block body 9 is arranged at the bottom of the feeder body 6. A threaded hole 13 is opened on the bottom surface of the heating block body 9. The threaded hole 13 is threadedly connected to the print head body 10.

[0026] A hydraulic cylinder 2 is installed on the surface of a fixed plate 1, and the inner rod of the hydraulic cylinder 2 passes through the fixed plate 1 and the bracket 4 fixedly installed on the bottom surface of the fixed plate 1 and is fixedly installed on the surface of the lifting plate 5. At the same time, a feeder body 6 is also provided on the bottom surface of the lifting plate 5, and a heating block body 9 is provided at the bottom end of the feeder body 6. The print head body 10 is threadedly installed inside the threaded hole 13 on the bottom surface of the heating block body 9. At the same time, a through hole 7 on the surface of the lifting plate 5 is provided to be slidably connected to the side walls of the limit rod 8 fixedly installed on both sides of the bottom surface of the bracket 4. When the lifting plate 5 is driven to rise and fall by the upper hydraulic cylinder 2, the lifting plate 5 moves along the direction of the limit rod 8 to increase the stability of the lifting plate 5 when driving the print head body 10 to move.

[0027] The lengths of the two sets of limit rods 8 are respectively greater than the length of the print head body 10 after installation, and the two sets of fixing blocks 11 are both located below the bottom end of the print head body 10. By setting the length of the limit rods 8 to be greater than the length of the print head body 10, and the fixing blocks 11 at the bottom ends of the two sets of limit rods 8 are both located below the bottom end of the print head body 10, the splint 16 set between the two sets of fixing blocks 11 can clean the material at the bottom end of the print head body 10.

[0028] The side walls between the two sets of fixing blocks 11 are fixedly mounted on the connecting plate 12 . A concave hole 14 is formed on the surface of the connecting plate 12 . The inner wall of the concave hole 14 abuts against the bottom side wall of the print head body 10 .

[0029] A connecting plate 12 is arranged between the two sets of fixing blocks 11, and a concave hole 14 is opened on the surface of the connecting plate 12. The inner wall of the concave hole 14 abuts against the bottom side wall of the print head body 10, so that the bottom end of the print head body 10 passes through the concave hole 14 for printing.

[0030] The bottom side walls of the connecting plate 12 are symmetrically provided with springs 15, and the opposite ends of the springs 15 are fixedly installed with the side walls of the clamping plate 16. The top surface of the clamping plate 16 is slidably connected to the bottom surface of the connecting plate 12. At the same time, springs 15 are symmetrically provided on the bottom side walls of the connecting plate 12, and the opposite ends of the springs 15 are fixedly installed with the side walls of the clamping plate 16, so that the clamping plate 16 can be squeezed below the recessed hole 14 by the elastic force of the springs 15. When the upper print head body 10 squeezes the clamping plate 16 under the push of the hydraulic cylinder 2, the two groups of clamping plates 16 are opened, so that the print head body 10 can print normally.

[0031] The opposite side walls of the two groups of clamps 16 are respectively provided with recesses 17, and the side walls of the recesses 17 are slidably connected to the bottom end of the print head body 10. By respectively providing recesses 17 on the opposite side walls of the clamps 16, and the inner walls of the recesses 17 are slidably connected to the bottom end side walls of the print head body 10, the clamps 16 are squeezed by the hydraulic cylinder 2 to squeeze the two groups of clamps 16, so that the bottom end of the print head body 10 passes through the recess 17 for normal printing.

[0032] The inner bottom surfaces of the two groups of recesses 17 are each provided with a scraper 18, which is slidably connected to the bottom side wall of the print head body 10. By providing a scraper 18 on the inner bottom surfaces of the recesses 17, the scraper 18 is slidably connected to the bottom side wall of the print head body 10, so that the scraper 18 can scrape the material at the end of the print head body 10, thereby avoiding waste caused by drawing of material at the port of the print head body 10.

[0033] The original length of the spring 15 is greater than half the length of the connecting plate 12. By setting the original length of the spring 15 to be greater than half the length of the connecting plate 12, the clamping plate 16 can cut the material at the bottom of the print head body 10 through the scraper 18 inside the recess 17 when the print head body 10 contracts upward under the pressure of the spring 15, thereby avoiding waste caused by material drawing.

[0034] The surface of the fixing plate 1 is provided with mounting holes 3 on both sides of the hydraulic cylinder 2. By providing mounting holes 3 on the surface of the fixing plate 1 on both sides of the hydraulic cylinder 2, the fixing plate 1 can be installed in an external device to facilitate printing.

[0035] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A retractable print head for a 3D printing device, comprising a fixed plate (1), a hydraulic cylinder (2) and a lifting plate (5), characterized in that: The hydraulic cylinder (2) is fixedly mounted on the surface of the fixed plate (1), and the inner rod of the hydraulic cylinder (2) penetrates the fixed plate (1) and the side wall of the bracket (4) fixedly mounted on the bottom surface of the fixed plate (1) and is fixedly mounted on the surface of the lifting plate (5). The bottom surface of the lifting plate (5) is provided with a feeder body (6), and the surface of the lifting plate (5) is symmetrically provided with through holes (7) on both sides of the feeder body (6). The bottom surface of the bracket (4) is symmetrically provided with limit rods (8), and the side walls of the limit rods (8) are slidably connected to the inner walls of the through holes (7). The bottom surfaces of the limit rods (8) are provided with fixed blocks (11). The bottom of the feeder body (6) is provided with a heating block body (9), and the bottom surface of the heating block body (9) is provided with a threaded hole (13), and the threaded hole (13) is threadedly connected to the print head body (10).

2. A retractable print head for 3D printing equipment according to claim 1, characterized in that: The lengths of the two sets of limit rods (8) are respectively greater than the length of the print head body (10) after installation, and the two sets of fixing blocks (11) are both located below the bottom end of the print head body (10).

3. The retractable print head for 3D printing equipment according to claim 2, characterized in that: The side walls between the two groups of fixed blocks (11) are respectively fixedly mounted on the connecting plate (12); a concave hole (14) is provided on the surface of the connecting plate (12); the inner wall of the concave hole (14) contacts the bottom side wall of the print head body (10).

4. The retractable print head for 3D printing equipment according to claim 3, characterized in that: The bottom and side walls of the connecting plate (12) are symmetrically provided with springs (15), and the opposite ends of the springs (15) are fixedly mounted on the side walls of the clamping plate (16), and the top surface of the clamping plate (16) is slidably connected to the bottom surface of the connecting plate (12).

5. A retractable print head for 3D printing equipment according to claim 4, characterized in that: The opposite side walls of the two groups of clamping plates (16) are respectively provided with notches (17), and the side walls of the notches (17) are slidably connected to the bottom end of the print head body (10).

6. A retractable print head for 3D printing equipment according to claim 5, characterized in that: The inner bottom surfaces of the two groups of recesses (17) are both provided with scrapers (18), and the scrapers (18) are slidably connected to the bottom side wall of the print head body (10).

7. A retractable print head for 3D printing equipment according to claim 6, characterized in that: The original length of the spring (15) is greater than half the length of the connecting plate (12).

8. The retractable print head for 3D printing equipment according to claim 1, characterized in that: The surface of the fixing plate (1) is provided with mounting holes (3) on both sides of the hydraulic cylinder (2).

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