High-speed wire feeding mechanism

Abstract

The invention discloses a high-speed wire feeding mechanism. The high-speed wire feeding mechanism comprises a base plate; the movable seat and the fixed seat are arranged on the base plate; the wire feeding roller assemblies are arranged on the movable seat and the fixed seat respectively and distributed oppositely, and each wire feeding roller assembly comprises an elastic supporting frame and a conveying roller body arranged at the inner end of the elastic supporting frame; and the driving device is arranged on the base plate. The two sets of wire feeding roller assemblies have the characteristic of adjusting the relative gap, the conveying gap can be pre-debugged according to the size of the wire, the positions of the conveying roller bodies can be adaptively adjusted according to the deformation of the wire through the elastic supporting frames, meanwhile, the two sets of conveying roller bodies are adaptively centered, and the pressure of the conveying roller bodies on the wire is uniformly adjusted; in addition, the two sets of conveying roller bodies synchronously rotate towards the middle at the same speed under the action of the driving device and convey the wires, and the uniformity of the conveying pressure on the two sides of the wires is further guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D wire feeding equipment, and specifically to a high-speed wire feeding mechanism. Background Art

[0002] The wire feeding mechanism is one of the core components of a fused deposition modeling (FDM / FFF) 3D printer, responsible for stably and precisely feeding wire materials (such as PLA, ABS, etc.) into the hot end for melting and extrusion. However, the existing wire feeding mechanisms of 3D printers have certain drawbacks in actual use; Firstly, for the wire feeding cavity of the existing wire feeding mechanism, its gap is fixed, and the adaptation range is low. Secondly, since the wire material is easily deformed by the external environment, the wire feeding mechanism cannot transport the wire material well. Thirdly, it is difficult for the wire feeding mechanism to adjust the pressure on both sides of the wire material at the same speed, synchronously and uniformly, which affects the transportation of some wire materials. For example, for super-hard materials such as carbon fiber, it is easy to cause slipping; for super-flexible materials such as TPU, it is easy to cause serious flattening of the wire cross-section, making it difficult to smoothly enter the wire guide tube or causing local bending during feeding. Therefore, a high-speed wire feeding mechanism is proposed. Summary of the Invention

[0003] The purpose of the present invention is to provide a high-speed wire feeding mechanism. The two groups of wire feeding roller assemblies provided in this mechanism have the characteristic of relative gap adjustment, and can pre-adjust the conveying gap according to the wire material size, improving the applicable range. The elastic support frames where they are located can adapt to the deformation of the wire material, enabling the two groups of conveying roller bodies to adapt to centering and uniformly adjust the pressure of the conveying roller bodies on the wire material, ensuring the quality of wire material transportation. In addition, during the process of the two groups of conveying roller bodies rotating synchronously, at the same speed and towards the middle under the action of the driving device to transport the wire material, the uniformity of the conveying pressure on both sides of the wire material is further ensured.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A high-speed wire feeding mechanism, comprising: A substrate; a movable seat and a fixed seat provided on the substrate; and wire feeding roller assemblies respectively provided on the movable seat and the fixed seat and distributed relatively. Each group of wire feeding roller assemblies includes an elastic support frame and a conveying roller body provided at the inner end of the elastic support frame. Among them, the conveying roller bodies on both sides are used to transport the wire material, and the elastic support frame can adaptively center and achieve uniform pressure distribution; it also includes a driving device provided on the substrate for driving the two groups of conveying roller bodies to rotate synchronously, at the same speed and towards the middle to transport the wire material; the conveying roller body provided on the movable seat can move horizontally relative to the driving device to adjust the gap between the two groups of conveying roller bodies to meet the transportation process of different wire materials.

[0005] Preferably, two elastic support frames are arranged side by side in each group. Each elastic support frame includes a mounting frame, slide rails arranged symmetrically up and down on opposite surfaces of the mounting frame. A slider is arranged in each slide rail for assembling a conveying roller; and a through hole is formed in the mounting frame, and a telescopic rod is arranged in the through hole. One end of the telescopic rod is fixed with a mounting member, the mounting member is rotatably mounted with a transmission gear through a pin shaft, and a connecting block is fixed at the other end of the telescopic rod. A first spring is arranged on the outer wall of the telescopic rod between the connecting block and the mounting frame; and a rack is also included, which is respectively fixed on opposite surfaces of the two sliders and meshes with the transmission gear.

[0006] Preferably, each group of the conveying rollers includes a mounting block fixed at one end of each slider away from the connecting block, and a first horizontal shaft rotatably mounted between the upper two mounting blocks and the lower two mounting blocks respectively. A wire guiding roller is fixed in the middle of each first horizontal shaft for contacting the wire and conveying the wire downward.

[0007] Preferably, the driving device includes two groups of pulley assemblies respectively connected to one ends of the two groups of conveying rollers. Each group of pulley assemblies includes a driving round wheel respectively fixed at one end of two first horizontal shafts; and a second horizontal shaft rotatably mounted on the mounting member close to one side of the driving round wheel, and a compensating wheel is fixed on the second horizontal shaft; and a transmission belt is also included, which is sleeved on the two driving round wheels and the compensating wheel; and a coaxial meshing transmission component is used for the two groups of pulley assemblies to run synchronously, at the same speed and in opposite directions.

[0008] Preferably, the coaxial meshing transmission component includes brackets respectively fixed at both ends of the base plate. Two driving wheels sleeved on the spline shaft are symmetrically fixed on opposite sides of the two spline sleeves, and the driving wheels can mesh with driven wheels fixed on the corresponding second horizontal shafts; and U-shaped frames are symmetrically fixed on the movable seat and the fixed seat. A transmission plate that can slide horizontally is arranged in each U-shaped frame. A second spring is connected between one side of the transmission plate and the inner wall of the U-shaped frame, and a first transmission frame is fixed on the other side. A through groove opened in the upper part of the first transmission frame is rotatably mounted with the corresponding second horizontal shaft; and second transmission frames are symmetrically fixed on opposite sides of the two transmission plates. One end of the second transmission frame away from the transmission plate is sleeved on the spline shaft and rotatably mounted with the corresponding spline sleeve.

[0009] Preferably, the movable seat includes a limiting groove opened on one side of the base plate, and a limiting block is arranged in the limiting groove; and an assembling block fixed on the upper surface of the base plate. A screw rod is arranged inside a threaded groove opened in the assembling block, and a handle is fixed at one end of the screw rod, and the other end is rotatably connected to a mounting ring arranged on the limiting block.

[0010] Preferably, mounting seats are fixed to the tops of two mounting frames where one set of elastic support frames is located, and an inlet sleeve is provided on the mounting seats and directly above the two conveying rollers; an outlet sleeve is further fixed to the substrate and directly below the two conveying rollers for receiving the wire material.

[0011] Preferably, a traction device is provided on one of the mounting blocks provided on the fixed seat for pushing the wire material into the inlet sleeve; the traction device includes a vertical plate, a horizontal plate provided at the top of the vertical plate, and a first transmission shaft and a second transmission shaft respectively rotatably mounted at both ends of the horizontal plate. Among them, driving rollers are respectively fixed on the first transmission shaft and the second transmission shaft, and a transmission belt is sleeved between the two driving rollers; a first swing rod and a transmission rod are further included. One end of the first swing rod is rotatably mounted on the second transmission shaft, and the other end thereof is rotatably mounted with a second swing rod. One end of the transmission rod is fixedly connected to the first transmission shaft, and the other end thereof is rotatably mounted with the middle part of the second swing rod through a rotating shaft; and a mounting post is provided at the end of the second swing rod away from the first swing rod, and a check cylinder assembly is provided on the mounting post for pulling the wire material; a positioning roller fixed on the second transmission shaft is further included, and the wire material sequentially passes through the check cylinder assembly, the positioning roller, the inlet sleeve and extends between the two conveying rollers.

[0012] Preferably, one end of the second transmission shaft away from the positioning roller passes through a mounting hole opened on the horizontal plate and is fixed with a first driving roller, and a second driving roller fixed to the end of one of the first horizontal shafts, and a driving belt is sleeved between the second driving roller and the first driving roller.

[0013] Preferably, the check cylinder assembly includes a cylinder body fixed to the mounting post, and a wire feeding cavity is provided in the cylinder body; and a plurality of tentacles longitudinally distributed on the inner wall of the wire feeding cavity, among which the wire feeding cavity is for the wire material to pass through, and the inner ends of the tentacles face the upper opening of the wire feeding cavity.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The two sets of wire feeding roller assemblies provided in the present invention have the characteristic of relative gap adjustment, and can pre-adjust the conveying gap according to the wire material size, improving the applicable range. The elastic support frames where they are located can adaptively adjust the positions of the conveying rollers according to the deformation of the wire material, and at the same time realize the adaptation and centering of the two sets of conveying rollers and uniformly adjust the pressure of the conveying rollers on the wire material to ensure the quality of wire material conveying. In addition, during the process that the two sets of conveying rollers rotate synchronously, at the same speed and towards the middle under the action of the driving device and convey the wire material, the uniformity of the conveying pressure on both sides of the wire material is further guaranteed.

[0015] 2. As another embodiment of the present invention, the check cylinder assembly provided in the present invention can perform an action of scooping back from bottom to top. Combining with the structural characteristics of the check cylinder assembly, the pulling and progression of the wire material are realized. At the same time, the positioning roller fixed to the second transmission shaft rotates clockwise, further pushing the wire material into the inner part of the inlet sleeve. This design can push the wire material forward to overcome the problem that the wire material is easily broken empty.

[0016] 3. As other embodiments of the present invention, the wire feeding cavity provided inside the cylinder can accommodate the wire material, and the upwardly facing tentacles provided inside the wire feeding cavity can limit the direction of the wire material. When the wire material goes upward along the direction of the tentacles, there is no obstruction. When the wire material goes downward, the tentacles can limit the wire material. This design can avoid the situation of the wire material retreating. Cooperating with other structures of the traction device, the wire material can be well pulled forward. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the first perspective of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the second perspective of the present invention; Figure 3 is a three-dimensional structural schematic diagram of the third perspective of the present invention; Figure 4 is a front view structural schematic diagram of the present invention; Figure 5 is a side view structural schematic diagram of the present invention; Figure 6 is a top view structural schematic diagram of the present invention; Figure 7 is a sectional structural schematic diagram of A-A; Figure 8 is a partial sectional structural schematic diagram of the check cylinder assembly; Figure 9 is Figure 2 a partial enlarged structural schematic diagram of; Figure 10 is Figure 1 a partial enlarged structural schematic diagram of.

[0018] In the figure: 111, substrate; 112, movable seat; 1121, limiting groove; 1122, limiting block; 1123, assembly block; 1124, screw rod; 1125, handle; 1126, mounting ring; 113, fixed seat; 311, mounting frame; 312, slide rail; 313, slider; 314, telescopic rod; 315, mounting member; 316, connecting block; 317, first spring; 318, driving gear; 319, rack; 411, driving round wheel; 412, second horizontal shaft; 413, compensating wheel; 414, transmission belt; 415, U-shaped frame; 416, transmission plate; 417, second spring; 418, first transmission bracket; 419, driven wheel; 420, bracket; 421, spline shaft; 422, spline sleeve; 423, driving wheel; 424, second transmission bracket; 425, motor; 511, mounting seat; 512, inlet sleeve; 513, outlet sleeve; 611, vertical plate; 612, horizontal plate; 613, first transmission shaft; 614, second transmission shaft; 615, transmission roller; 616, transmission belt; 617, first swing rod; 618, second swing rod; 619, transmission rod; 620, mounting post; 621, check cylinder assembly; 6211, cylinder body; 6212, wire feeding cavity; 6213, antenna; 623, first driving roller; 624, second driving roller; 625, driving belt; 626, positioning roller; 711, mounting block; 712, wire guiding roller. Detailed implementation manners

[0019] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. The embodiments of the present invention will be described in detail below with reference to the drawings.

[0020] Embodiment 1 Please refer to Figures 1 to 10, the present invention preferably provides a technical solution: a high-speed wire feeding mechanism, comprising: a substrate 111; a movable seat 112 and a fixed seat 113 disposed on the substrate 111; and wire feeding roller assemblies respectively disposed on the movable seat 112 and the fixed seat 113 and distributed oppositely. Each wire feeding roller assembly includes an elastic support frame and a conveying roller body disposed at the inner end of the elastic support frame. Among them, the conveying roller bodies on both sides are used to realize the conveying of the wire, and the elastic support frame can self-adaptively align and realize uniform distribution of pressure; it further includes a driving device disposed on the substrate 111 for driving the two groups of conveying roller bodies to rotate synchronously, at the same speed and both towards the middle to convey the wire; the conveying roller body disposed on the movable seat 112 can horizontally move relative to the driving device to realize the gap adjustment of the two groups of conveying roller bodies to meet the conveying process of different wires.

[0021] Combined with Figure 1 , 2 , 4, and 6 show that the movable seat 112 and the fixed seat 113 are respectively disposed on the substrate 111, and the wire feeding roller assemblies oppositely disposed on the two have the following advantages; First, combined with Figure 1 shown, each wire feeding roller assembly is composed of an elastic support frame and a conveying roller body at the inner end of the elastic support frame. Among them, the conveying roller body is used to realize the conveying of the wire, and the elastic support frame can adaptively adjust the position of the conveying roller body according to the deformation of the wire during the wire conveying process, and at the same time realize the adaptive alignment of the two groups of conveying roller bodies and uniformly adjust the pressure of the conveying roller bodies on the wire to ensure the quality of wire conveying; Second, the provided driving device, combined with Figure 2 shown, its function is: driving the two groups of conveying roller bodies to rotate synchronously, at the same speed and both towards the middle to convey the wire. This driving device not only serves as the driving source for the two conveying roller bodies to convey the wire, but the design of driving the two groups of conveying roller bodies synchronously and at the same speed further ensures the uniformity of the conveying pressure on both sides of the wire and regulates the tension force; Third, the movable seat 112 and the fixed seat 113 are disposed on both sides of the substrate 111. Combined with Figure 1 , 2 , and 3 show that the movable seat 112 can drive the wire feeding roller assembly disposed thereon to approach or move away from the wire feeding roller assembly on the fixed seat 113, thereby adjusting the distance between the two groups of conveying roller bodies, and thus pre-adjusting the conveying gap according to the wire size to improve the practicability of the present application.

[0022] The two sets of wire feeding roller assemblies provided in this application have the characteristic of relative gap adjustment. The conveying gap can be pre-adjusted according to the wire size, improving the applicable range. The elastic support frames where they are located can adaptively adjust the positions of the conveying roller bodies according to the deformation of the wire. At the same time, the two sets of conveying roller bodies can be adapted to be centered and evenly adjust the pressure of the conveying roller bodies on the wire, ensuring the quality of wire conveying. In addition, in the process of the two sets of conveying roller bodies rotating synchronously, at the same speed and towards the middle under the action of the driving device to convey the wire, the uniformity of the conveying pressure on both sides of the wire is further guaranteed.

[0023] Further, two elastic support frames are arranged side by side in each group. Each elastic support frame includes an installation frame 311, slide rails 312 symmetrically distributed up and down on the opposite surfaces of the installation frame 311. Each slide rail 312 is provided with a slider 313 for assembling the conveying roller body; and through holes are opened on the installation frame 311, and telescopic rods 314 are arranged in the through holes. One end of the telescopic rod 314 is fixed with a mounting piece 315. The mounting piece 315 is rotatably installed with a transmission gear 318 through a pin shaft, and a connecting block 316 is fixed at the other end of the telescopic rod 314. A first spring 317 is arranged on the outer wall of the telescopic rod 314 between the connecting block 316 and the installation frame 311; it also includes racks 319 respectively fixed on the opposite surfaces of the two sliders 313 and meshing with the transmission gear 318; further, each group of conveying roller bodies includes mounting blocks 711 fixed at one end of each slider 313 away from the connecting block 316, and first horizontal shafts rotatably installed between the two upper mounting blocks 711 and the two lower mounting blocks 711 respectively. A wire guiding roller 712 is fixed in the middle of each first horizontal shaft for contacting the wire and conveying the wire downward.

[0024] Combined with Figure 1 、 2 As shown in FIGS. 7, taking a single elastic support frame as an example, sliders 313 are respectively arranged in the two slide rails 312 symmetrically distributed up and down on the opposite surfaces of the installation frame 311. Mounting blocks 711 are respectively assembled on the two sliders 313. The two upper mounting blocks 711 and the two lower mounting blocks 711 in the two groups of elastic support frames are respectively connected with wire guiding rollers 712 through the first horizontal shafts arranged therebetween. Combined with Figure 1 、 2 As shown in FIG. 14, when the position of the movable seat 112 is adjusted, the two wire guiding rollers 712 above the movable seat 112 can approach or move away from the two wire guiding rollers 712 on the fixed seat 113, realizing the adjustment of the gap between the wire guiding rollers 712 on both sides; In addition, for the telescopic rod 314 on the installation frame 311, a transmission gear 318 is rotatably installed on the mounting piece 315 arranged at one end. The two sides of the transmission gear 318 are respectively meshed with the racks 319 on the two sliders 313. A connecting block 316 is fixed at the other end. A first spring 317 is connected to the outer wall of the telescopic rod 314 between the connecting block 316 and the installation frame 311. Combined withFigure 7 , when the wire is passed through the four wire guide rollers 712 where the two sets of conveying roller bodies are located, if the wire undergoes local deformation, for example, the wire becomes thermally softened, flexible materials such as TPU are prone to heat deformation during the conveying process, resulting in wrinkles, or near the printing head position, the wire expands. At this time, the wire guide roller 712 in contact with the deformed part can adaptively approach or move away from the wire, the telescopic rod 314 moves adaptively, and the first spring 317 compresses or resets adaptively to uniformly adjust the tension on both sides of the wire. This design can adapt to wires of different materials, such as the super-hard material carbon fiber. Over-tight or over-loose limiting is likely to cause the phenomenon of slipping between the wire guide roller 712 and the wire; for super-flexible materials such as TPU, it is easy to cause serious flattening of the wire cross-section, making it difficult to smoothly enter the nozzle or causing local bending during feeding.

[0025] Furthermore, the driving device includes two sets of pulley assemblies respectively connected to one end of the two sets of conveying roller bodies. Each set of pulley assemblies includes a driving round wheel 411 respectively fixed at one end of two first horizontal shafts; and a second horizontal shaft 412 rotatably installed on the mounting member 315 near one side of the driving round wheel 411, with a compensation wheel 413 fixed on the second horizontal shaft 412; it also includes a transmission belt 414 sleeved on the two driving round wheels 411 and the compensation wheel 413; and a coaxial meshing transmission assembly for the two sets of pulley assemblies to run synchronously, at the same speed and in opposite directions.

[0026] Combined with Figure 2 , 3 shown, the two sets of pulley assemblies provided here can correspond one-to-one with the two sets of wire feeding roller assemblies. Specifically, combined with Figure 2 , for the upper two mounting blocks 711 and the lower two mounting blocks 711 where each set of wire feeding roller assemblies is located, the driving round wheels 411 are respectively fixed at the end parts of the first horizontal shafts where they are located. At the same time, the compensation wheel 413 is fixed on the second horizontal shaft 412 rotatably installed on the side wall of the mounting member 315 near the driving round wheel 411. As Figure 4 shown, a triangular transmission belt 414 is sleeved on the driving round wheel 411 and the compensation wheel 413; It is known that the wire guiding roller 712 can adjust its lateral position according to the adaptability of the wire. Then, the two driving round wheels 411 are both capable of adaptively adjusting their positions. However, in order to ensure the stability of the driving round wheels 411 and the compensating wheel 413, that is, the transmission belt 414 needs to always maintain a normal transmission state. The coaxial meshing transmission assembly set here not only drives the wire guiding roller 712 where the two pulley assemblies and the two conveying rollers are located to run synchronously, at the same speed and in opposite directions, but also can meet the requirement that the two pulley assemblies follow the corresponding conveying rollers to adjust their positions laterally. Specifically, when the wire guiding roller 712 approaches or moves away from the wire, the telescopic rod 314 can approach or move away from the wire adaptively under the meshing action of the transmission teeth 318 and the rack 319, thereby enabling the transmission belt 414 to always be in a normal transmission tension state, and at the same time enabling the driving round wheels 411, the compensating wheel 413 and the triangular transmission belt 414 sleeved therebetween to be adaptively adjusted.

[0027] Further, the coaxial meshing transmission assembly includes brackets 420 respectively fixed at both ends of the base plate 111. At the opposite ends of the two brackets 420, a spline shaft 421 is rotatably installed; and two spline sleeves 422 spline-connected to the spline shaft 421. Among them, on the opposite sides of the two spline sleeves 422, driving wheels 423 sleeved on the spline shaft 421 are symmetrically fixed, and the driving wheels 423 can be meshed with the driven wheels 419 fixed on the corresponding second horizontal shafts 412; it also includes U-shaped frames 415 symmetrically fixed on the movable seat 112 and the fixed seat 113. In each U-shaped frame 415, a transmission plate 416 that can slide horizontally is provided. Among them, on one side of the transmission plate 416, a second spring 417 is connected to the inner wall of the U-shaped frame 415, and on the other side, a first transmission bracket 418 is fixed. And a through groove opened in the upper part of the first transmission bracket 418 is rotatably installed with the corresponding second horizontal shaft 41; and second transmission brackets 424 symmetrically fixed on the opposite sides of the two transmission plates 416. Among them, the end of the second transmission bracket 424 far from the transmission plate 416 is sleeved on the spline shaft 421 and is rotatably installed with the corresponding spline sleeve 422.

[0028] Combined Figure 2 、 3 As shown in FIGS. 4, on the spline shaft 421, two spline sleeves 422 are sleeved, and on their opposite sides, two driving wheels 423 are symmetrically fixed. The driven wheels 419 respectively fixed at the ends of the two second horizontal shafts 412 can be meshed with the corresponding driving wheels 423. When the motor 425 runs and drives the spline shaft 421 to rotate, it drives the second horizontal shafts 412 where the two pulley assemblies are located and the compensating wheel 413 to rotate synchronously and at the same speed. Under the action of the transmission belt 414, the four driving round wheels 411 and the wire guiding roller 712 are further realized to rotate synchronously and at the same speed. Because the two driving wheels 423 are symmetric, the opposite running states of the wire guiding rollers 712 on both sides are realized. Specifically, as shown in Figure 7 FIG., the left wire guiding roller 712 rotates clockwise, and the right wire guiding roller 712 rotates counterclockwise.

[0029] Furthermore, the movable seat 112 includes a limiting groove 1121 formed on one side of the substrate 111, and a limiting block 1122 is arranged inside the limiting groove 1121; and an assembly block 1123 fixed on the upper surface of the substrate 111. A screw rod 1124 is arranged inside a threaded groove formed on the assembly block 1123, and a handle 1125 is fixed at one end of the screw rod 1124, and the other end is rotatably connected to a mounting ring 1126 arranged on the limiting block 1122.

[0030] As shown in combination with FIGS. 1, 3, 4, and 7, one end of the screw rod 1124 is rotatably installed on the mounting ring 1126 of the limiting block 1122, and the other end is fixed with a handle 1125. When the handle 1125 is rotated, the screw rod 1124 can move inside the assembly block 1123, thereby pushing the limiting block 1122 to move inside the limiting groove 1121, and further realizing the process of the wire feeding roller assembly on the movable seat 112 moving towards or away from the substrate 111.

[0031] Embodiment 2 As another implementation manner of the present invention, mounting seats 511 are fixed on the tops of two mounting frames 311 where one group of elastic support frames are located, and an inlet sleeve 512 arranged on the mounting seats 511 and directly above the two conveying roller bodies; an outlet sleeve 513 fixed on the substrate 111 and directly below the two conveying roller bodies is also included for receiving the wire.

[0032] As Figure 4 shown, the inlet sleeve 512 and the outlet sleeve 513 are respectively arranged directly above and directly below the two groups of conveying roller bodies, and thereby the processes of wire feeding and discharging are realized.

[0033] Embodiment 3 As other embodiments of the present invention, a traction device is provided on one of the mounting blocks 711 provided on the fixed seat 113 for pushing the wire material into the inner part of the inlet sleeve 512; the traction device includes a vertical plate 611, a horizontal plate 612 provided at the top of the vertical plate 611, and a first transmission shaft 613 and a second transmission shaft 614 respectively rotatably mounted at both ends of the horizontal plate 612. Among them, transmission rollers 615 are respectively fixed on the first transmission shaft 613 and the second transmission shaft 614, and a transmission belt 616 is sleeved between the two transmission rollers 615; it further includes a first swing rod 617 and a transmission rod 619. Among them, one end of the first swing rod 617 is rotatably mounted on the second transmission shaft 614, and the other end thereof is rotatably mounted with a second swing rod 618. One end of the transmission rod 619 is fixedly connected to the first transmission shaft 613, and the other end thereof is rotatably mounted with the middle part of the second swing rod 618 through a rotating shaft; and a mounting post 620 is provided at the end of the second swing rod 618 away from the first swing rod 617, and a check cylinder assembly 621 for pulling the wire material is provided on the mounting post 620; it further includes a positioning roller 626 fixed on the second transmission shaft 614. The wire material sequentially passes through the check cylinder assembly 621, the positioning roller 626, the inlet sleeve 512 and extends between the two conveying roller bodies; further, one end of the second transmission shaft 614 away from the positioning roller 626 passes through the mounting hole provided on the horizontal plate 612 and is fixed with a first driving roller 623, and a second driving roller 624 fixed at the end of one of the first horizontal shafts, and a driving belt 625 is sleeved between the second driving roller 624 and the first driving roller 623.

[0034] In this embodiment, in combination with Figure 1 、 2 、7, 9, and 10 shown, the first transmission shaft 613 and the second transmission shaft 614 respectively rotatably mounted at both ends of the horizontal plate 612, and a transmission belt 616 is sleeved between the two transmission rollers 615 respectively fixed thereon. And a second swing rod 618 is connected between the first swing rod 617 rotatably mounted on the second transmission shaft 614 and the transmission rod 619 fixed on the first transmission shaft 613. Specifically, one end of the second swing rod 618 is rotatably mounted on the first swing rod 617, the middle part thereof is rotatably mounted on the transmission rod 619, and the other end thereof is provided with a mounting post 620. At the same time, a check cylinder assembly 621 and a positioning roller 626 are respectively provided on the mounting post 620 and the second transmission shaft 614. The wire material of the present application sequentially passes through the check cylinder assembly 621, the positioning roller 626, the inlet sleeve 512 and passes through the two conveying roller bodies and extends to the outlet sleeve 513. In combination with Figure 7 shown, when the two groups of conveying roller bodies are rotated by the driving device, the conveying roller body connected to the fixed seat 113, a second driving roller 624 fixed on the first horizontal shaft where it is located can be sleeved with a driving belt 625 between the first driving roller 623 fixed on the second transmission shaft 614. In combination with Figure 5 , thus as in Figure 7When the wire guide roller 712 on the left rotates clockwise, it drives Figure 9 , 10 The second transmission shaft 614 shown rotates clockwise. At this time, through the transmission belt 616, the first transmission shaft 613 is driven to rotate clockwise. Then the transmission rod 619 drives the second swing rod 618 and the first swing rod 617 to deflect clockwise, so that the check cylinder assembly 621 can perform the action of pulling back from bottom to top. Combining with the structural characteristics of the check cylinder assembly 621, the wire is pulled and advanced. At the same time, the positioning roller 626 fixed to the second transmission shaft 614 rotates clockwise, further pushing the wire into the inner part of the inlet sleeve 512. This design can push the wire forward to overcome the problem that the wire is prone to break in the air.

[0035] Embodiment 4 As other embodiments of the present invention, the check cylinder assembly 621 includes a cylinder body 6211 fixed to the mounting column 620, and a wire feeding cavity 6212 is provided in the cylinder body 6211; and a plurality of tentacles 6213 are arranged on the inner wall of the wire feeding cavity 6212 and distributed longitudinally. Among them, the wire feeding cavity 6212 is used for the wire to pass through, and the inner ends of the tentacles 6213 face the upper opening of the wire feeding cavity 6212.

[0036] Combined with Figure 7 , 8 As shown, the wire feeding cavity 6212 provided in the cylinder body 6211 can accommodate the wire, and the upward tentacles 6213 provided in the wire feeding cavity 6212 can limit the direction of the wire. When the wire goes upward along the direction of the tentacles 6213, there is no obstruction. When the wire goes downward, the tentacles 6213 can limit the wire. This design can avoid the situation of the wire going backward. Cooperating with other structures of the traction device, the wire can be well pulled forward.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium. Among them, there are various ways of detachable installation. For example, it can be by the way of cooperation of plugging and buckling, or by the way of bolt connection, etc.

[0038] The above embodiments' specific description of the present invention is only used to further illustrate the present invention and cannot be understood as a limitation on the protection scope of the present invention. Those skilled in the art's non-essential improvements and adjustments made according to the content of the above invention all fall within the protection scope of the present invention.

Claims

1. A high-speed wire feeding mechanism, characterized in that, Including: a substrate (111); a movable seat (112) and a fixed seat (113) provided on the substrate (111); and wire feeding roller assemblies respectively provided on the movable seat (112) and the fixed seat (113) and distributed relatively. Each group of the wire feeding roller assemblies includes an elastic support frame, and a conveying roller body provided at an inner end of the elastic support frame. Among them, the conveying roller bodies on both sides are used to realize the conveying of wire materials, and the elastic support frame can be self - adaptively centered and realize uniform distribution of pressure; It further includes a driving device provided on the substrate (111), which is used to drive the two groups of conveying roller bodies to rotate synchronously, at the same speed and both towards the middle to convey wire materials; The conveying roller body provided on the movable seat (112) can move horizontally relative to the driving device to realize the gap adjustment of the two groups of conveying roller bodies, so as to meet the conveying process of different wire materials.

2. The high - speed wire feeding mechanism according to claim 1, characterized in that: There are two elastic support frames arranged side by side in each group. Each elastic support frame includes an installation frame (311), slide rails (312) provided on opposite surfaces of the installation frame (311) and distributed symmetrically up and down. Each slide rail (312) is internally provided with a slider (313) for the assembly of the conveying roller body; and through holes opened on the installation frame (311). An expansion rod (314) is provided in the through holes. Among them, one end of the expansion rod (314) is fixed with an installation part (315). The installation part (315) is rotationally installed with a transmission gear (318) through a pin shaft, and a connection block (316) fixed at the other end of the expansion rod (314). A first spring (317) is arranged on the outer wall of the expansion rod (314) between the connection block (316) and the installation frame (311); It further includes racks (319) respectively fixed on opposite surfaces of the two sliders (313) and meshing with the transmission gear (318).

3. The high - speed wire feeding mechanism according to claim 2, characterized in that: Each group of the conveying roller bodies includes installation blocks (711) fixed at one end of each slider (313) away from the connection block (316), and first horizontal shafts respectively rotationally installed between the upper two installation blocks (711) and the lower two installation blocks (711). A wire guiding roller (712) is fixed in the middle of each first horizontal shaft for contacting the wire material and conveying the wire material downward.

4. The high - speed wire feeding mechanism according to claim 3, characterized in that: The driving device includes two groups of pulley assemblies respectively connected to one ends of the two groups of conveying roller bodies. Each group of pulley assemblies includes transmission round wheels (411) respectively fixed at one end of the two first horizontal shafts; and a second horizontal shaft (412) rotationally installed on the installation part (315) close to one side of the transmission round wheel (411). A compensation wheel (413) is fixed on the second horizontal shaft (412); It further includes a transmission belt (414) sleeved on the two transmission round wheels (411) and the compensation wheel (413); and a coaxial meshing transmission component for the two groups of pulley assemblies to run synchronously, at the same speed and in opposite directions.

5. The high-speed wire feeding mechanism according to claim 4, characterized in that: The coaxial meshing transmission assembly includes brackets (420) respectively fixed at both ends of the substrate (111), and spline shafts (421) are rotatably installed at the opposite ends of the two brackets (420); And two spline sleeves (422) spline-connected to the spline shaft (421). Among them, driving wheels (423) sleeved on the spline shaft (421) are symmetrically fixed on the opposite sides of the two spline sleeves (422), and the driving wheels (423) can be meshed with driven wheels (419) fixed on the corresponding second horizontal shafts (412); It further includes U-shaped frames (415) symmetrically fixed on the movable seat (112) and the fixed seat (113). A transmission plate (416) that can slide horizontally is arranged in each U-shaped frame (415). Among them, a second spring (417) is connected between one side of the transmission plate (416) and the inner wall of the U-shaped frame (415), and a first transmission bracket (418) is fixed on the other side. A through groove opened in the upper part of the first transmission bracket (418) is rotatably installed with the corresponding second horizontal shaft (412); And second transmission brackets (424) symmetrically fixed on the opposite sides of the two transmission plates (416). Among them, one end of the second transmission bracket (424) far from the transmission plate (416) is sleeved on the spline shaft (421) and is rotatably installed with the corresponding spline sleeve (422).

6. The high-speed wire feeding mechanism according to claim 1, characterized in that: The movable seat (112) includes a limit groove (1121) opened on one side of the substrate (111), and a limit block (1122) is arranged in the limit groove (1121); And an assembly block (1123) fixed on the upper surface of the substrate (111). Among them, a screw rod (1124) is arranged inside a threaded groove opened on the assembly block (1123), and a handle (1125) is fixed at one end of the screw rod (1124), and the other end is rotatably connected to an installation ring (1126) arranged on the limit block (1122).

7. The high-speed wire feeding mechanism according to claim 2, characterized in that: Mounting seats (511) are fixed on the tops of two mounting frames (311) where one group of elastic support frames are located, and an inlet sleeve (512) arranged on the mounting seats (511) and directly above the two wire conveying rollers; It further includes an outlet sleeve (513) fixed on the substrate (111) and directly below the two wire conveying rollers for receiving the wire.

8. The high-speed wire feeding mechanism according to claim 3, characterized in that: A traction device is arranged on one of the mounting blocks (711) arranged on the fixed seat (113) for pushing the wire into the inlet sleeve (512). The traction device includes a vertical plate (611), a horizontal plate (612) provided at the top of the vertical plate (611), and a first transmission shaft (613) and a second transmission shaft (614) respectively rotatably installed at both ends of the horizontal plate (612). Among them, transmission rollers (615) are respectively fixed on the first transmission shaft (613) and the second transmission shaft (614), and a transmission belt (616) is sleeved between the two transmission rollers (615); It further includes a first swing rod (617) and a transmission rod (619). Among them, one end of the first swing rod (617) is rotatably installed with the second transmission shaft (614), and the other end thereof is rotatably installed with a second swing rod (618). One end of the transmission rod (619) is fixedly connected to the first transmission shaft (613), and the other end thereof is rotatably installed with the middle part of the second swing rod (618) through a rotating shaft; And an installation column (620) provided at the end of the second swing rod (618) away from the first swing rod (617). A check cylinder assembly (621) is provided on the installation column (620) for pulling the wire; It further includes a positioning roller (626) fixed on the second transmission shaft (614). The wire sequentially passes through the check cylinder assembly (621), the positioning roller (626), the inlet sleeve (512) and extends between the two conveying roller bodies.

9. The high-speed wire feeding mechanism according to claim 8, wherein: One end of the second transmission shaft (614) away from the positioning roller (626) passes through an installation hole opened on the horizontal plate (612) and is fixed with a first driving roller (623), and a second driving roller (624) fixed at the end of one of the first horizontal shafts. A driving belt (625) is sleeved between the second driving roller (624) and the first driving roller (623).

10. The high-speed wire feeding mechanism according to claim 9, wherein: The check cylinder assembly (621) includes a cylinder body (6211) fixed to the installation column (620), and a wire feeding cavity (6212) is provided inside the cylinder body (6211); And a plurality of tentacles (6213) provided on the inner wall of the wire feeding cavity (6212) and longitudinally distributed. Among them, the wire feeding cavity (6212) is used for the wire to pass through, and the inner ends of the tentacles (6213) face the upper opening of the wire feeding cavity (6212).

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