Near-end elastic consumable wire feeding structure

Abstract

The near-end elastic consumable wire feeding structure comprises a device plate, fixing blocks are transversely and fixedly connected to the middle of the top and the middle of the bottom of the surface of the front end of the device plate, and belt wheels are transversely and rotationally connected to the positions, located on the two sides between the two fixing blocks, of the surface of the front end of the device plate. The two belt wheels on the same side are in transmission connection through a belt. According to the near-end elastic consumable wire feeding structure, four belt wheels are arranged, when the near-end elastic consumable wire feeding structure is used, the two belt wheels on the two sides are in transmission connection through a belt, and consumables enter the near-end elastic consumable wire feeding structure through a feeding opening formed in a fixing block at the top end of a device plate; and then the consumables can be clamped by the belts on the belt wheels on the two sides and are driven by the belts to move downwards in the continuous rotation process of the belt wheels until the consumables are discharged through the feeding port in the bottom end, and the structure enables the consumables and the transmission structure to be always kept in face-line contact, so that the overall conveying stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing equipment technical field, concretely is a kind of near end elastic consumable wire feeding structure. BACKGROUND

[0002] 3D printing technology, also known as additive manufacturing, is a technology that uses powder-like metal or plastic and other adhesive materials to construct objects through layer-by-layer printing based on digital model files. The basic principle is to cut a 3D model into multiple cross sections according to a coordinate axis, then print layer by layer and stack them together to form a solid three-dimensional model.

[0003] The raw material consumables for 3D printing are generally in the form of a certain hardness wire. When conveying the consumables, a wire feeding structure is needed. Generally, the wire feeding structure uses two rollers that are close to each other to convey the wire. In this structure, the two rollers and the wire only have point and line contact. In the case of elastic consumables, the conveying effect is not stable, and the flow of the consumables during conveying is not easy to control, which ultimately affects the size and appearance of the printed model. SUMMARY

[0004] To overcome the shortcomings of the prior art, the utility model provides a near end elastic consumable wire feeding structure, which solves the problem that the general wire feeding structure uses two rollers that are close to each other to convey the elastic wire. In this structure, the two rollers and the wire only have point and line contact, which makes the conveying effect unstable and the flow of the consumables during conveying difficult to control.

[0005] To achieve the above purpose, the utility model realizes the following technical scheme: a near end elastic consumable wire feeding structure, comprising a device plate, the top and bottom of the front end surface of the device plate are fixedly connected with a fixed block in the middle, the two sides of the front end surface of the device plate between the two fixed blocks are horizontally rotatably connected with a belt pulley, the same side of the two belt pulleys is connected by a belt drive, the top of the two fixed blocks is vertically provided with an inlet, the top and bottom of the front end surface of the device plate are fixedly connected with an upper support block and a lower support block on both sides, the upper surface of the inner side of the two lower support blocks is upwardly convex to form an extension block, and the same side of the upper support block and the lower support block is provided with a tension adjusting structure.

[0006] Further, the two tension adjusting structures are symmetrical to each other with the middle line of the device plate as the center line, and the front end and the rear end of the device plate are fixedly connected with a front end plate and a rear end plate respectively.

[0007] Further, the middle part of the inner side surface of the rotating arm is fixedly connected with an extension frame, and the inner end of the extension frame is transversely connected with a compression bearing.

[0008] Further, the two tension adjusting structures are symmetrical to each other with the middle line of the device plate as the center line, and the front end and the rear end of the device plate are fixedly connected with a front end plate and a rear end plate respectively.

[0009] Further, the middle part of the inner side surface of the rotating arm is fixedly connected with an extension frame, and the inner end of the extension frame is transversely connected with a compression bearing.

[0010] Further, the rear end surface of the rear end plate is fixedly connected with a motor in the transverse direction, and the output shaft of the motor is rotatably penetrated through the rear end plate and fixedly connected with the rear end of one gear.

[0011] Further, the bottom end of the device plate is fixedly connected with a cooling fan on both sides, and the middle part of the bottom end of the device plate is provided with a print head.

[0012] Compared with the prior art, the beneficial effects of the present application are as follows: the proximal elastic consumable feeding structure is provided with four belt pulleys, and the two belt pulleys on both sides are connected through the belt in the using process of the device, the consumable enters the inside of the device through the feeding port on the fixed block at the top end of the device plate, then the consumable is clamped by the belt on the belt pulleys on both sides and is driven downward by the belt in the process of continuous rotation of the belt pulleys, and is discharged through the feeding port at the bottom end, so that the contact between the consumable and the transmission structure is always maintained as a surface and a line, thereby improving the stability of the overall conveying. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1The utility model discloses a main body structure schematic diagram of the utility model discloses a kind of near-end elastic consumable wire feeding structure.

[0014] Fig. 2 The utility model discloses an outer view structure schematic diagram of the utility model discloses a kind of near-end elastic consumable wire feeding structure.

[0015] Fig. 3 The utility model discloses a structure schematic diagram of rear end plate in the utility model.

[0016] In the drawing: 1-device plate, 2-upper support block, 3-lower support block, 4-fixed block, 5-belt pulley, 6-feeding port, 7-rotating arm, 8-through hole, 9-device slot, 10-spring, 11-screw hole, 12-threaded rod, 13-end block, 14-pressing bearing, 15-rear end plate, 16-gear, 17-front end plate, 18-inner recess, 19-cooling fan, 20-printing head. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the range protected by the utility model.

[0018] Please refer to Figs. 1-3 The utility model provides a kind of technical solutions: a kind of near-end elastic consumable wire feeding structure, including device plate 1, the middle part of the top and bottom of device plate 1 front end surface is transversely fixedly connected with fixed block 4, the both sides of device plate 1 front end surface and located between two fixed blocks 4 are transversely rotationally connected with belt pulley 5, same side two belt pulleys 5 are connected by belt drive, the top of two fixed blocks 4 is vertically through and is provided with feeding port 6;The both sides of the top and bottom of device plate 1 front end surface are transversely fixedly connected with upper support block 2 and lower support block 3, the upper surface of the inner side of two lower support blocks 3 is all formed into extension block by being upwardly convex, and the same side upper support block 2 and lower support block 3 are all provided with tension adjusting structure.

[0019] The device is when using, two belt pulleys 5 between the both sides are connected by belt drive, and consumable is entered the inside of the device by the feeding port 6 that the fixed block 4 on the top of device plate 1 is opened, then consumable will be clamped by the belt on the both sides of belt pulley 5 and be moved downward by belt in the process that belt pulley 5 continues to rotate, until by the feeding port 6 of bottom end is discharged, this structure makes consumable and transmission structure always keep the contact of surface and line, to improve the stability of overall conveying.

[0020] Both tension adjustment structures are identical. One tension adjustment structure includes a rotating arm 7 that is laterally rotatably connected to the front surface of the device plate 1 and located below an upper support block 2. The length of the rotating arm 7 is adapted to the distance between the upper support block 2 and the lower support block 3 on the same side. A through hole 8 is laterally opened at the bottom of the outer surface of the rotating arm 7. The outer end of the through hole 8 expands outward to form a device groove 9. A threaded hole 11 is laterally opened on the outer surface of the extension block on the same side. A threaded rod 12 is laterally threaded inside the threaded hole 11. The outer end of the threaded rod 12 extends to the outside of the rotating arm 7 through the through hole 8. An end block 13 is fixedly connected to the outer end of the threaded rod 12. A spring 10 is fixedly connected between the end block 13 and the inner end of the device groove 9.

[0021] An extension frame is fixedly connected to the middle of the inner surface of the rotating arm 7, and a clamping bearing 14 is laterally rotatably connected to the inner end of the extension frame.

[0022] The tension adjustment structure of this device can adjust the tension of the two belts. In actual use, rotating the end block 13 will drive the threaded rod 12 to rotate. Under the action of the threaded hole 11, the threaded rod 12 will move along its length. When the threaded rod 12 moves towards the center of the device, the end block 13 at its outer end moves synchronously, which will compress the spring 10. The compressed spring 10 will apply greater pressure to the extension frame and the pressure bearing 14 at the inner end of the rotating arm 7. The pressure bearing 14 receives greater pressure, which will apply greater pressure to the belt, and vice versa, thus achieving the effect of tension adjustment.

[0023] The two tension adjustment structures are symmetrical about the center line of the vertical direction of the device plate 1. The front end and the rear end of the device plate 1 are respectively fixedly connected to the front end plate 17 and the rear end plate 15.

[0024] The front plate 17 has semi-circular inner grooves 18 in the middle of both sides. The upper part of the front surface of the rear plate 15 is laterally rotatably connected to two meshing gears 16 that correspond to the two upper pulleys 5 respectively. The front middle of the two gears 16 is laterally connected to a connecting shaft. Both connecting shafts can rotatably pass through the device plate 1 and are fixedly connected to the rear end of the two pulleys 5 respectively.

[0025] A motor is laterally fixedly connected to the rear end surface of the rear end plate 15, and the output shaft of the motor rotatably passes through the rear end plate 15 and is fixedly connected to the rear end of a gear 16.

[0026] The operation of the motor will drive one gear 16 to rotate, and then another gear 16 will be driven to rotate in the opposite direction at the same speed, thereby driving the two upper pulleys 5 to move synchronously in the opposite direction. This structure enables the two belts to move synchronously in the opposite direction to transport consumables.

[0027] The groove 18 on the front plate 17 allows people to easily observe the specific state of the two tension adjustment structures. The outer edges of the front surfaces of the front plate 17, the device plate 1, and the rear plate 15 are all transversely perforated with through holes. The three are connected by nuts and screws passing through the through holes and tightening them.

[0028] Cooling fans 19 are fixedly connected to both sides of the bottom end of the device plate 1, and a print head 20 is provided in the middle of the bottom end of the device plate 1.

[0029] Cooling fan 19 and print head 20 are existing technologies in 3D printing equipment and will not be described in detail here.

[0030] When in use, the two pulleys 5 on both sides are connected by belt drive. The consumable enters the device through the feed port 6 on the fixed block 4 at the top of the device plate 1. Then, the consumable is clamped by the belt on the pulleys 5 on both sides and moves downward by the belt as the pulleys 5 rotate continuously until it is discharged through the feed port 6 at the bottom. This structure ensures that the consumable and the transmission structure always maintain surface-to-line contact, thereby improving the overall stability of the conveying.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A proximal elastic consumable wire feeding structure, characterized in that: The device includes a device plate (1), and a fixing block (4) is horizontally fixedly connected to the middle of the top and bottom of the front surface of the device plate (1). A pulley (5) is horizontally rotatably connected to both sides of the front surface of the device plate (1) and between the two fixing blocks (4). The two pulleys (5) on the same side are connected by belt drive. The top of the two fixing blocks (4) are vertically connected with a feed port (6). An upper support block (2) and a lower support block (3) are horizontally fixedly connected to the top and bottom of the front surface of the device plate (1). The upper surface of the inner side of the two lower support blocks (3) protrudes upward to form an extension block. A tension adjustment structure is provided between the upper support block (2) and the lower support block (3) on the same side.

2. The proximal elastic consumable wire feeding structure according to claim 1, characterized in that: Both tension adjustment structures are identical. One of the tension adjustment structures includes a rotating arm (7) that is laterally rotatably connected to the front surface of the device plate (1) and located below an upper support block (2). The length of the rotating arm (7) is adapted to the distance between the upper support block (2) and the lower support block (3) on the same side. A through hole (8) is laterally opened at the bottom of the outer surface of the rotating arm (7). The outer end of the through hole (8) expands outward to form a device groove (9). A threaded hole (11) is laterally opened on the outer surface of the extension block on the same side. A threaded rod (12) is laterally threaded inside the threaded hole (11). The outer end of the threaded rod (12) extends to the outside of the rotating arm (7) through the through hole (8). An end block (13) is fixedly connected to the outer end of the threaded rod (12). A spring (10) is fixedly connected between the end block (13) and the inner end of the device groove (9).

3. The proximal elastic consumable wire feeding structure according to claim 2, characterized in that: An extension frame is fixedly connected to the middle of the inner surface of the rotating arm (7), and a pressure bearing (14) is rotatably connected to the inner end of the extension frame.

4. The proximal elastic consumable wire feeding structure according to claim 1, characterized in that: The two tension adjustment structures are symmetrical about the center line of the vertical direction of the device plate (1). The front end and the rear end of the device plate (1) are respectively fixedly connected to the front end plate (17) and the rear end plate (15).

5. The proximal elastic consumable wire feeding structure according to claim 4, characterized in that: The front end plate (17) has a semi-circular inner groove (18) in the middle of both sides. The upper part of the front end surface of the rear end plate (15) is laterally rotatably connected to two meshing gears (16) that correspond to the two upper pulleys (5). The front end of the two gears (16) is laterally connected to a connecting shaft. The two connecting shafts can rotatably pass through the device plate (1) and are fixedly connected to the rear end of the two pulleys (5).

6. The proximal elastic consumable feeding structure according to claim 5, characterized in that: A motor is laterally fixedly connected to the rear end surface of the rear end plate (15), and the output shaft of the motor rotatably passes through the rear end plate (15) and is fixedly connected to the rear end of a gear (16).

7. The proximal elastic consumable wire feeding structure according to claim 1, characterized in that: Cooling fans (19) are fixedly connected to both sides of the bottom end of the device plate (1), and a print head (20) is provided in the middle of the bottom end of the device plate (1).

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