3D printing equipment consumable fixing device

Abstract

The utility model discloses a consumable fixing device for 3D printing equipment. The charging tray loading device comprises a charging tray loading rotating shaft and a rotating shaft bracket, wherein the charging tray loading rotating shaft is erected on the rotating shaft bracket. The material disc loading rotating shaft comprises a rotating shaft body, a material disc clamping jaw, an elastic piece and bearings, the two bearings are fixedly installed at the two ends of the rotating shaft body respectively, and the elastic piece is arranged on the material disc clamping jaw. The side wall of the rotating shaft body is provided with a plurality of material disc clamping jaw installation grooves, and the elastic pieces and the clamping jaws are embedded into the material disc clamping jaw installation grooves. The rotating shaft support comprises two supporting arms fixedly connected through a fixing plate, the damping brush is arranged between the two supporting arms, the adjusting screw penetrates through the fixing plate, the tail of the adjusting screw makes contact with the damping brush bottom plate, and the height of the damping brush is adjusted. The wire feeding device is simple in structure, convenient to operate, capable of achieving rapid replacement of consumable material discs, high in compatibility with different consumable material discs, smooth in rotation of the consumable material discs on the material frame, smooth and stable in wire feeding, adjustable in damping force and capable of preventing wires from scattering on the material discs.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing, and in particular relates to a consumable material fixing device for 3D printing equipment. Background Art

[0002] 3D printing is a form of rapid prototyping technology that uses adhesive materials to construct objects layer by layer. Common consumables for 3D printing include nylon fiberglass, durable nylon, gypsum, aluminum, and rubber. 3D printing consumables are typically filaments. During the printing process, the filaments are wound into bundles using a fixture. The fixture is then attached to the printing device, and the wound filament is pulled out of the fixture during operation.

[0003] Existing consumable fixtures for 3D printing equipment are relatively cumbersome to replace, lack stability when pulling out wire, and lack the ability to adjust the resistance of the rotating material tray containing the wire. Furthermore, due to the certain hardness of the wire, if pulled out too quickly, the wire can easily scatter, causing it to bulge out of the material tray. Patent application publication number CN113352613A discloses a consumable fixture for 3D printing equipment. The fixture includes a receiving slot on the top surface of a mounting base, within which a hemispherical block is mounted. Connecting posts are mounted on the surface of the hemispherical block. Several supporting mechanisms are mounted on the hemispherical block around the connecting posts. The connecting posts are mounted with threaded sleeves, and sealing plates are attached to the bottom surfaces of the sleeves. A fixing mechanism is mounted on the bottom surface of the mounting base. A zigzag bracket is mounted on the top surface of the connecting posts. A fixed shaft is mounted between the two vertical sections of the zigzag bracket. A winding drum is mounted on the fixed shaft, and an annular end plate is attached to the end of the winding drum. An elastic expansion block is mounted on the horizontal section of the zigzag bracket, and an arc block is attached to the end of the elastic expansion block. The fixing device has a relatively complex structure, is not flexible in rotation, and is troublesome to replace consumables. Summary of the Invention

[0004] The purpose of the utility model is to provide a consumable material fixing device for 3D printing equipment, which can realize quick material tray replacement and adjustable material tray rotation damping.

[0005] The utility model comprises a material tray loading rotating shaft and a rotating shaft bracket. The material tray loading rotating shaft is mounted on the rotating shaft bracket.

[0006] The tray loading shaft includes a shaft body, a tray claw, a spring piece and a bearing; the two bearings are fixedly mounted at both ends of the shaft body, the spring piece is arranged on the tray claw, and the spring piece and the claw are embedded in the side wall of the shaft body.

[0007] The rotating shaft body is cylindrical, and a material tray claw mounting groove is opened axially on the outer wall, and multiple material tray claw mounting grooves are evenly distributed along the circumference; the material tray claw mounting groove is long and strip-shaped, and positioning protrusions are provided at both ends of the material tray claw mounting groove.

[0008] The material tray claw is long and narrow, with an inclined top surface and hooks at both ends of the bottom surface; the lower side of the inclined top surface of the material tray claw is turned inward to form a claw head; the higher side of the inclined top surface of the material tray claw is turned outward to form an axial limit portion.

[0009] The spring piece is a V-shaped metal sheet with an opening facing downward, and the middle part is fixedly connected to the bottom surface of the fixed material tray claw; multiple material tray claws are arranged in corresponding material tray claw mounting grooves, and the material tray claws are movably connected to the rotating shaft body through hooks and positioning protrusions.

[0010] The rotating shaft bracket includes two parallel support arms with semicircular bearing seats on the inner sides of the tops of the support arms. The two support arms are fixedly connected to a fixed plate. A damping brush is arranged between the two support arms. The damping brush includes a base plate and bristles perpendicular to the base plate. The two ends of the damping brush base plate are movably connected to the support arms via a rocker arm. One end of the rocker arm is fixedly connected to the damping brush base plate, and the other end is rotatably connected to the support arm. An adjusting screw is set through the fixed plate, and the tail of the adjusting screw contacts the damping brush base plate. The height of the damping brush can be adjusted by adjusting the adjusting screw. During use, the edge of the material tray sinks into the bristles. By adjusting the height of the damping brush, the depth of the material tray edge sinking into the bristles is adjusted, that is, the interference fit between the damping brush and the edge of the material tray is adjusted.

[0011] Furthermore, circular bearing platforms are respectively provided at the centers of the two end faces of the rotating shaft body, the diameter of the bearing platforms is consistent with the outer diameter of the bearing inner ring, and a bearing mounting shaft is provided at the center of the bearing platform, the outer diameter of the bearing mounting shaft is consistent with the inner diameter of the bearing inner ring; the bearing is an annular inner ring bearing, and the bearing mounting shaft is fixedly connected to the bearing inner ring.

[0012] Furthermore, the end face of the bearing mounting shaft is concave to form a screw accommodating portion, a screw hole is opened in the center of the bearing mounting shaft, and a long groove is opened through the inner wall of the screw hole and the outer wall of the bearing mounting shaft, and the direction of the long groove is consistent with the central axis of the bearing mounting shaft; the inner hole of the bearing is sleeved on the bearing mounting shaft, the screw is screwed into the screw hole, and the bearing mounting shaft expands outward to fix the bearing to the rotating shaft body.

[0013] Furthermore, a groove is formed on the rear side of the hook to form an elastic hook.

[0014] This utility model uses a tray loading shaft to flexibly mount the tray containing consumables on a shaft bracket, making tray replacement simple and convenient. The tray loading shaft utilizes a unique structure, with spring clips flexibly connecting the tray's claws to the tray's center hole, ensuring optimal tightness and easy insertion and removal. The tray rotates smoothly through bearings, ensuring smooth and stable wire feeding. Adjusting the height of the damping brush adjusts the resistance of the tray's rotation, effectively preventing wire from scattering on the tray.

[0015] The utility model has a simple structure and is easy to operate. It can realize the rapid replacement of consumable material trays and has high compatibility with different consumable material trays. The consumable material tray rotates smoothly on the material rack, the wire supply is smooth and stable, the damping force is adjustable, and the wire can be prevented from scattering on the material tray. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 for Figure 1 Schematic diagram of the structure of the middle material tray loading shaft;

[0018] Figure 3 for Figure 2 Schematic diagram of the structure of the rotating shaft body;

[0019] Figure 4 for Figure 2 Schematic diagram of the structure of the middle material plate claw;

[0020] Figure 5 for Figure 1 Schematic diagram of the structure of the rotating shaft bracket;

[0021] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure;

[0022] Figure 7 This is a schematic diagram of the use state of the utility model. DETAILED DESCRIPTION

[0023] The linear filament used in 3D printing is wound on a reel. The reel has an I-shaped cross-section, with a winding drum in the middle for winding the filament. Circular baffles at each end of the drum limit the filament. When the 3D printing device's print head starts working, the filament on the reel is pulled out.

[0024] like Figure 1 As shown, the 3D printing equipment consumable material fixing device includes a material tray loading shaft 1 and a shaft bracket 2.

[0025] like Figure 2 As shown, the tray loading shaft 1 includes a shaft body 11, a tray clamping claw 12, a spring piece 13 and a bearing 14. Two bearings 14 are fixedly mounted at both ends of the shaft body 11, and the spring piece 13 is arranged on the tray clamping claw 12. The spring piece 13 and the clamping claw 12 are embedded in the side wall of the shaft body 11.

[0026] like Figure 3As shown, the shaft body 11 is cylindrical, and a tray claw mounting groove 111 is opened axially on the outer wall. The tray claw mounting groove 111 is long and strip-shaped, and multiple tray claw mounting grooves 111 are evenly distributed along the circumference. Positioning protrusions 112 are provided at both ends of the tray claw mounting 111.

[0027] If the bearing adopts a solid inner ring bearing, the inner ring of the bearing is directly fixedly mounted on the center position of the end face of the shaft body 11. If the bearing adopts an annular inner ring bearing, the shaft body 11 adopts the following structure, such as Figure 3 : Circular bearing platforms 113 are respectively provided at the centers of the two end faces of the rotating shaft body 11. The diameter of the circular bearing platform 113 is consistent with the outer diameter of the bearing inner ring, so as to avoid friction between the outer ring of the bearing and the retaining frame and the end face of the rotating shaft body. A bearing mounting shaft 114 is provided at the center of the circular bearing platform 113. The outer diameter of the bearing mounting shaft 114 is consistent with the inner diameter of the bearing inner ring. The end face of the bearing mounting shaft 114 is concave, forming a screw accommodating portion 115. A screw hole is provided at the center of the bearing mounting shaft 114, and a long groove 116 is provided through the inner wall of the screw hole and the outer wall of the bearing mounting shaft. The direction of the long groove 116 is consistent with the central axis of the bearing mounting shaft. The inner hole of the bearing is sleeved on the bearing mounting shaft 114, and the screw is screwed into the screw hole. The bearing mounting shaft expands outward to fix the bearing to the rotating shaft body, and the screw head is located below the end face of the bearing.

[0028] like Figure 4 As shown, the tray claw 12 is elongated with a sloped top surface. Hooks 121 are located at each end of the bottom surface, and slots are cut into the rear side of the hooks to form resilient hooks. The lower side of the top slope of the tray claw is turned inward to form a claw head 122, facilitating insertion of the tray loading shaft into the center hole of the tray. The higher side of the top slope of the tray claw is turned outward to form an axial stop 123 to prevent over-insertion.

[0029] The spring piece 13 is a V-shaped metal piece with an opening facing downward, and its middle portion is fixedly connected to the bottom surface of the fixed material tray claw 12. Multiple material tray claws 12 are set in corresponding material tray claw mounting grooves 111. The material tray claws are movably engaged with the rotating shaft body through the hook 121 and the positioning protrusion 112, and can move radially relative to the rotating shaft body.

[0030] like Figure 5 and 6As shown, the rotating shaft bracket 2 includes two parallel support arms 21, and a semicircular groove is opened on the inner side of the top of the support arm to form a bearing seat 22. The diameter of the groove matches the outer diameter of the bearing; the two support arms 21 are fixedly connected to the fixed plate 23. The damping brush 24 is arranged between the two support arms 21. The damping brush includes a base plate 241 and bristles 242 perpendicular to the base plate. The two ends of the damping brush base plate 241 are movably connected to the support arm 21 through a rocker rod 25. One end of the rocker rod 25 is fixedly connected to the damping brush base plate 241, and the other end is rotatably connected to the support arm 21. The adjusting screw 26 is set through the fixed plate 23, and the tail of the adjusting screw 26 is in contact with the damping brush base plate 241. The height of the damping brush is adjusted by adjusting the screw 26.

[0031] like Figure 7 As shown, when in use, the tray loading shaft 1 is inserted from the side of the claw head 122 into the center hole of the tray with the consumables wound around it, until the axial limit part 123 contacts the tray. The bearing of the tray loading shaft is placed on the bearing seat 22, and the tray is mounted on the shaft bracket. The 3D printing equipment pulls the consumables and realizes the rotation of the tray through the bearing. The rotation is smooth and the wire supply is smooth and stable. The edge of the tray is sunken into the bristles 242. By adjusting the height of the damping brush, the depth of the edge of the tray sunk into the bristles is adjusted, that is, the interference fit between the damping brush and the edge of the tray is adjusted to prevent the wire from scattering on the tray. After the consumables of a tray are used up, the tray can be directly removed and quickly replaced with a new tray with consumables wound around it. It is simple and convenient.

Claims

1. A consumable material fixing device for 3D printing equipment, comprising a tray loading shaft and a shaft support, wherein the tray loading shaft is mounted on the shaft support; characterized in that: The tray loading shaft comprises a shaft body, a tray clamping claw, a spring piece and a bearing; two bearings are fixedly mounted on both ends of the shaft body, the spring piece is arranged on the tray clamping claw, and the spring piece and the clamping claw are embedded in the side wall of the shaft body; The rotating shaft body is cylindrical, and a material tray claw mounting groove is opened in the axial direction on the outer wall, and multiple material tray claw mounting grooves are evenly distributed along the circumference; the material tray claw mounting groove is long and strip-shaped, and a clamping protrusion is provided at both ends of the material tray claw mounting groove; The tray claw is long and narrow, with an inclined top surface and hooks at both ends of the bottom surface. The lower side of the inclined top surface of the tray claw is turned inward to form a claw head; the higher side of the inclined top surface of the tray claw is turned outward to form an axial limit portion. The spring piece is a V-shaped metal sheet with an opening facing downward, and the middle portion is fixedly connected to the bottom surface of the fixed material tray claw; a plurality of material tray claws are arranged in corresponding material tray claw mounting grooves, and the material tray claws are movably engaged with the rotating shaft body through hooks and latching protrusions; The rotating shaft bracket includes two parallel supporting arms, a semicircular bearing seat is provided on the inner side of the top of the supporting arm, and the two supporting arms are fixedly connected to the fixed plate; the damping brush is arranged between the two supporting arms; the damping brush includes a base plate and bristles perpendicular to the base plate, and the two ends of the damping brush base plate are movably connected to the supporting arms through a rocker rod, one end of the rocker rod is fixedly connected to the damping brush base plate, and the other end is rotatably connected to the supporting arm; the adjusting screw is arranged through the fixed plate, and the tail of the adjusting screw contacts the damping brush base plate, and the height of the damping brush is adjusted by adjusting the screw.

2. A 3D printing equipment consumables fixing device according to claim 1, characterized in that: A circular bearing platform is provided at the center of each of the two end faces of the rotating shaft body. The diameter of the bearing platform is consistent with the outer diameter of the bearing inner ring. A bearing mounting shaft is provided at the center of the bearing platform. The outer diameter of the bearing mounting shaft is consistent with the inner diameter of the bearing inner ring. The bearing is an annular inner ring bearing, and the bearing mounting shaft is fixedly connected to the bearing inner ring.

3. A 3D printing equipment consumables fixing device according to claim 2, characterized in that: The end surface of the bearing mounting shaft is concave to form a screw accommodating portion. A screw hole is opened in the center of the bearing mounting shaft, and a long groove is opened through the inner wall of the screw hole and the outer wall of the bearing mounting shaft. The direction of the long groove is consistent with the central axis of the bearing mounting shaft; the inner hole of the bearing is sleeved on the bearing mounting shaft, the screw is screwed into the screw hole, and the bearing mounting shaft expands outward to fix the bearing to the rotating shaft body.

4. A 3D printing equipment consumables fixing device according to claim 1, characterized in that: The rear side of the hook is slotted to form an elastic hook.

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