Continuous bar feeding device and using method thereof

Abstract

The invention relates to the technical field of additive manufacturing, in particular to a continuous bar feeding device and a using method thereof. The continuous bar feeding device comprises a driving mechanism; the first transmission mechanism comprises a sun gear connected with the output end of the driving mechanism, a plurality of planet gears in meshing transmission with the sun gear and a rotating shaft axially penetrating through the planet gears; the sun gear and the planet gear are arranged on a first horizontal plane; the second transmission mechanism comprises a first transmission gear connected with the rotating shaft and a second transmission gear in meshing transmission with the first transmission gear; the multiple clamping mechanisms are arranged on the second horizontal plane; the clamping mechanism comprises a bearing seat in transmission connection with the second transmission gear and a clamping piece arranged on the bearing seat. The clamping pieces of the multiple clamping mechanisms clamp the bar and enable the bar to rotate in the axial direction. Through the linkage design of the planetary gear train and the clamping mechanism, continuous rotating feeding of bars is achieved, and the feeding action can be completed without shutdown.

Description

Technical Field

[0001] This invention relates to the field of additive manufacturing technology, and in particular to a continuous bar feeding device and its usage method. Background Technology

[0002] Friction stir solid-state additive manufacturing (FSM) utilizes the rotation and movement of a stirring head to generate frictional heat with stacked thin sheets, causing plastic deformation and coating of the material. This method offers advantages such as high manufacturing efficiency and excellent performance, making it suitable for manufacturing large-sized and complex parts. Compared to traditional manufacturing methods, FSM requires less heat input, has a narrower heat-affected zone, and offers higher forming efficiency. Furthermore, the recrystallization process based on friction stir can yield ultrafine grains, effectively reducing defects found in traditional manufacturing techniques. Therefore, FSM is currently one of the most popular research directions in additive manufacturing.

[0003] Bar stock is a commonly used material in friction stir solid-phase additive manufacturing. When using bar stock for solid-phase additive manufacturing, the bar stock is fed into the spindle channel, and a push rod pushes the bar stock within the channel, providing forging force. When the push rod reaches its limit position, the equipment must be stopped, the push rod withdrawn from the spindle, a new bar stock placed into the spindle, and the push rod aligned with the spindle channel before further pressing. During this process, the equipment must stop operating, resulting in significant temperature loss in the additive material, which affects its properties.

[0004] The disadvantages of existing technologies include: 1. Each machine needs to be stopped when feeding material, which greatly reduces the efficiency of additive manufacturing; Second, placing the bar stock into the spindle sleeve and aligning the push rod with the inside of the spindle sleeve greatly increases the waiting time of the equipment and increases the probability of additive cooling defects. Third, multiple power sources are required to perform clamping and rotation actions, resulting in high manufacturing costs and high requirements for control precision. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention discloses a continuous bar feeding device and its usage method.

[0006] The technical solution adopted in this invention is as follows: In a first aspect, a continuous bar feeder is provided, comprising: Drive mechanism; The first transmission mechanism includes a sun gear connected to the output end of the drive mechanism, a plurality of planet gears meshing with the sun gear, and a rotating shaft axially passing through the planet gears; the sun gear and the planet gears are disposed on a first horizontal plane; The second transmission mechanism includes a first transmission gear connected to the rotating shaft and a second transmission gear meshing with the first transmission gear. Multiple clamping mechanisms are disposed on a second horizontal plane; each clamping mechanism includes a bearing seat that is connected to the second transmission gear and a clamping member disposed on the bearing seat; The clamping components of the plurality of clamping mechanisms clamp the bar stock and cause the bar stock to rotate axially.

[0007] In one embodiment of the invention, the center of the plurality of clamping mechanisms and the center of the sun gear are on the same axis.

[0008] In one embodiment of the present invention, the clamping member is a gear; the outer edge of the gear is in contact with the surface of the bar stock.

[0009] In one embodiment of the present invention, a first support plate and a base are further included; the surface of the first support plate is a first horizontal plane, the surface of the base is a second horizontal plane, and both the first support plate and the base have channels for the bar stock to pass through; the end of the rotating shaft away from the planetary gear is rotatably connected to the base; the bearing seat is fixed to the base.

[0010] In one embodiment of the present invention, there are three planetary gears, which are arranged in a ring around the sun gear; the included angle between two adjacent planetary gears is 120°.

[0011] In one embodiment of the present invention, three clamping mechanisms are provided, which are located between the orthographic projections of two adjacent planetary gears on the second horizontal plane, and the included angle between two adjacent clamping mechanisms is 120°.

[0012] In one embodiment of the present invention, the drive mechanism includes a drive source and a main shaft connected to the output end of the drive source; the sun gear is connected to the main shaft.

[0013] In one embodiment of the present invention, a frame for mounting the drive mechanism and the base is further included; the frame includes a first fixed seat, a connecting plate and a second fixed seat, the connecting plate being configured to connect the first fixed seat and the second fixed seat; the first fixed seat is used to mount the drive mechanism; the second fixed seat is used to mount the base.

[0014] In one embodiment of the present invention, the base includes a second support plate and a connecting column fixed to the side of the second support plate away from the first support plate; the connecting column and the second fixed seat are rotatably connected.

[0015] Secondly, a method for using a continuous bar feeder is provided, comprising the following steps: The drive mechanism drives the sun gear to rotate, which in turn drives multiple planet gears to rotate. The planet gears drive the first support plate to rotate via a rotating shaft, which in turn drives the first transmission gear to rotate. The first transmission gear transmits power to the second transmission gear through meshing, and the second transmission gear drives the clamping mechanism to rotate. The diameter of the channel used by the multiple clamping mechanisms for the bar stock is smaller than the diameter of the bar stock. When the bar stock enters the clamping mechanism, the clamping members adhere to the surface of the bar stock and simultaneously drive the bar stock to move along its axial direction.

[0016] The technical solution of the present invention has the following advantages compared with the prior art: The continuous bar feeder of this invention, under the action of the transmission mechanism, clamps the bar stock and rotates it downwards, realizing the stirring friction solid-phase additive manufacturing function of a single motor for rotary feeding. It can achieve continuous operation without stopping during feeding and additive manufacturing, greatly improving additive manufacturing efficiency and avoiding defects in the additive body caused by cooling during shutdown.

[0017] The continuous bar feeding device of the present invention uses a single motor to provide a power source, which reduces manufacturing and control costs. Attached Figure Description

[0018] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the continuous bar feeding device in this invention.

[0020] Figure 2 This is a schematic diagram of the structure of the first transmission mechanism in this invention.

[0021] Figure 3 This is a schematic diagram of the structure of the first transmission mechanism, the second transmission mechanism, and the clamping mechanism in this invention.

[0022] Figure 4 This is a top view of a portion of the first transmission mechanism, the second transmission mechanism, and the clamping mechanism in this invention.

[0023] Figure 5 This is a schematic diagram of the frame structure in this invention.

[0024] Figure 6 This is a schematic diagram of the structure of the first fixed base in this invention.

[0025] Figure 7 This is a schematic diagram of the structure of the second fixing seat in this invention.

[0026] Figure 8 This is a schematic diagram of the clamping component in this invention.

[0027] Figure 9This is a schematic diagram of the base structure in this invention.

[0028] Explanation of reference numerals on the accompanying drawings: 10. Drive mechanism; 11. Drive source; 12. Spindle; 20. Frame; 21. First fixing seat; 211. First fixing plate; 212. First annular base; 22. Connecting plate; 23. Second fixing seat; 231. Second fixing plate; 232. Second annular base; 30. First transmission mechanism; 31. Sun gear; 32. Planet gears; 33. Rotating shaft; 40. First support plate; 50. Second transmission mechanism; 51. First transmission gear; 52. Second transmission gear; 60. Clamping mechanism; 61. Clamping component; 62. Bearing housing; 70. Base; 71. Second support plate; 72. Connecting column; 73. Mounting hole; 80. Bar stock. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0030] The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the present invention. Furthermore, in all embodiments, the same reference numerals denote the same elements.

[0031] In existing technologies, friction stir solid-state additive manufacturing processes require frequent equipment shutdowns to change the bar stock, leading to temperature loss in the additive body and affecting molding quality. Traditional feeding devices rely on push rods to propel the bar stock into the spindle channel. When the push rod reaches its limit position, the machine must be stopped for bar stock replacement and push rod reset. This process not only reduces production efficiency but also increases the risk of cooling defects in the additive body. Furthermore, existing technologies require multiple power sources to control the clamping and rotation actions separately, resulting in complex structures and high control precision requirements.

[0032] To address the aforementioned issues, a device capable of continuous feeding is needed to avoid efficiency losses caused by equipment downtime. Considering the multi-output synchronous transmission characteristics of planetary gear trains, a single power source can be distributed to multiple clamping units through the meshing relationship between the planetary gears and the sun gear. Simultaneously, the engagement of transmission gears enables the clamping mechanism to generate synchronous rotational motion, thereby achieving continuous feeding of the bar stock without the need for an additional power source.

[0033] Therefore, combining Figures 1 to 3 This embodiment proposes a continuous bar feeding device including a drive mechanism 10, a first transmission mechanism 30, a second transmission mechanism 50, and multiple clamping mechanisms 60. The first transmission mechanism 30 includes a sun gear 31 connected to the output end of the drive mechanism 10, multiple planetary gears 32 meshing with the sun gear 31, and a rotating shaft 33 axially passing through the planetary gears 32. The sun gear 31 and planetary gears 32 are disposed on a first horizontal plane. The second transmission mechanism 50 includes a first transmission gear 51 connected to the rotating shaft 33 and a second transmission gear 52 meshing with the first transmission gear 51. The multiple clamping mechanisms 60 are disposed on a second horizontal plane. Each clamping mechanism 60 includes a bearing seat 62 connected to the second transmission gear 52 and a clamping member 61 disposed on the bearing seat 62. The clamping members 61 of the multiple clamping mechanisms 60 clamp the bar 80 and cause the bar 80 to rotate axially.

[0034] Among them, the drive mechanism 10 refers to the component that provides rotational power, which can be realized by an electric motor, and its output end is connected to the sun gear 31 to transmit power.

[0035] Sun gear 31 refers to the central gear, planet gear 32 refers to the gears arranged around and meshing with sun gear 31, and shaft 33 refers to the shaft-like part that passes through planet gear 32 and transmits power. Planet gear 32 and sun gear 31 are set on the same horizontal plane to ensure meshing accuracy.

[0036] The first transmission gear 51 is the gear connected to the rotating shaft 33, and the second transmission gear 52 is the gear that meshes with the first transmission gear 51 and drives the clamping mechanism 60. The two transmit torque through tooth surface contact. Specifically, both the first transmission gear 51 and the second transmission gear 52 can be helical gears.

[0037] The bearing housing 62 refers to the mounting base that supports the clamping member 61. The clamping member 61 refers to the component that directly contacts the bar stock. It can be a gear or roller structure, and its outer edge is in contact with the surface of the bar stock 80 to generate friction.

[0038] This embodiment further proposes that the center of the multiple clamping mechanisms 60 and the center of the sun gear 31 are on the same axis.

[0039] The center formed by the clamping mechanism 60 refers to the geometric center formed by multiple clamping elements 61 around the axis of the bar stock 80. For example, the clamping elements 61 can be arranged symmetrically in a ring array. The center of the sun gear 31 is on the same axis, which means that the rotation axis of the output end of the drive mechanism 10 coincides with the geometric center line formed by the clamping mechanism 60, thereby ensuring the straightness of the power transmission path.

[0040] Specifically, the clamping mechanism 60 is linked to the rotating shaft 33 via the second transmission mechanism 50. When the sun gear 31 drives the planetary gear 32 to rotate, the rotating shaft 33 drives the clamping mechanism 60 to rotate synchronously around the same axis. Since the center formed by the clamping mechanism 60 coincides with the axis of the sun gear 31, the clamping force of the clamping member 61 on the bar stock 80 is evenly distributed, avoiding frictional losses caused by eccentricity.

[0041] Combination Figure 3 and Figure 8 In this embodiment, the clamping member 61 is a gear, and the outer edge of the gear is attached to the surface of the bar stock 80.

[0042] Here, a gear refers to a ring-shaped mechanical component with a toothed structure, specifically an involute gear or a circular arc gear. The gear teeth are distributed on the outer circumference and transmit power through meshing. Outer edge contact refers to the contact area formed between the outer circumferential surface of the gear and the outer surface of the bar stock 80. This can be achieved by adjusting the gear's installation position to maintain continuous contact between the outer edge of the gear and the surface of the bar stock 80.

[0043] Specifically, the gear, acting as a clamping element 61, is fixed to the bearing housing 62. When the second transmission gear 52 drives the clamping mechanism 60 to rotate, the outer edge of the clamping element 61 contacts the surface of the bar stock 80 and generates friction. During the rotation of the clamping element 61, the contact area between its outer edge teeth and the surface of the bar stock 80 forms continuous driving points, driving the bar stock 80 to rotate axially through friction. The meshing transmission characteristics of the gear enable it to directly convert the rotational power of the second transmission mechanism 50 into a rotational driving force for the bar stock 80, eliminating the need for an additional independent clamping power source.

[0044] This embodiment further proposes that the continuous bar feeder also includes a first support plate 40 and a base 70. The surface of the first support plate 40 is a first horizontal plane, and the surface of the base 70 is a second horizontal plane. Both the first support plate 40 and the base 70 have channels for the bar 80 to pass through. The end of the rotating shaft 33 away from the planetary gear 32 is rotatably connected to the base 70. The bearing seat 62 is fixed to the base 70.

[0045] The first support plate 40 is a support component for supporting the first transmission mechanism 30. It can be implemented using a circular metal plate with a central through hole, and its horizontal arrangement ensures the stability of the transmission mechanism. The base 70 is a base component that supports multiple clamping mechanisms 60, forming a double-layer support structure with the first support plate 40. The channel is a cylindrical passage penetrating the support structure, with a diameter slightly larger than the outer diameter of the bar stock 80 to allow continuous material passage. The rotatable connection between the rotating shaft 33 and the base 70 refers to the power transmission achieved through a bearing assembly. Specifically, a deep groove ball bearing combined with a bushing structure can be used to ensure that the base 70 remains stationary when the planetary gear 32 rotates. The bearing seat 62 is fixed to the base 70, meaning that the mounting base of the clamping mechanism 60 is rigidly connected to the base 70. This can be achieved using bolt fastening, forming a stable clamping force transmission path.

[0046] Specifically, the first support plate 40 and the base 70 form upper and lower horizontal support surfaces, respectively, and are maintained at a distance by the frame 20 structure. The first transmission mechanism 30 is arranged on the surface of the first support plate 40, and the clamping mechanism 60 is mounted on the surface of the base 70. The rotating shaft 33 extends through the planetary gear 32 to the area of ​​the base 70, and achieves rotational freedom through the bearing assembly. The bar stock 80 passes through the central channel of the first support plate 40 and the base 70 in sequence, and the clamping member 61 forms a ring constraint on the surface of the base 70, which is driven by the second transmission gear 52 to achieve rotational clamping. This structure keeps the base 70 stationary when the planetary gear 32 rotates, and prevents the clamping mechanism 60 from rotating synchronously with the transmission components, which would cause the material to shift.

[0047] This embodiment further proposes that there are three planetary gears 32, which are arranged in a ring around the sun gear 31. The included angle between any two adjacent planetary gears 32 is 120°.

[0048] In this configuration, planetary gears 32 refer to the gear structure that meshes with and transmits power around the sun gear 31. Specifically, they can be implemented using standard gears with the same module and number of teeth, with their axes evenly distributed around the axis of the sun gear 31. The sun gear 31 is the gear located at the center of the planetary gear train and meshes with the planetary gears 32. Specifically, it can be implemented using spur gears whose module matches that of the planetary gears 32. The circular arrangement means that the planetary gears 32 form a circular array around the sun gear 31, with an included angle of 120° between adjacent planetary gears 32.

[0049] Specifically, three planetary gears 32 are evenly distributed circumferentially around the sun gear 31, with each planetary gear 32 meshing with the sun gear 31. The included angle between any two adjacent planetary gears 32 is set to 120°, creating a symmetrical arrangement of the three planetary gears 32 around the sun gear 31. When the sun gear 31 rotates, power is transmitted to the three planetary gears 32 through meshing, and each planetary gear 32 rotates around its own axis. Because the three planetary gears 32 are evenly distributed at 120° intervals, the load transfer among the planetary gears 32 is more balanced, reducing vibration and off-center loading during transmission. This arrangement makes power transmission smoother, and the symmetrical distribution of the planetary gears 32 improves the overall stability of the transmission.

[0050] Combination Figure 4 This embodiment further proposes that there are three clamping mechanisms 60, which are located between the orthographic projections of two adjacent planetary gears 32 on the second horizontal plane, and the included angle between two adjacent clamping mechanisms 60 is 120°.

[0051] The clamping mechanism 60 has three parts, which means that three independent clamping mechanisms 60 are used to clamp the bar stock 80 at multiple points. Specifically, it can be achieved by using a combination structure of bearing seats 62 and clamping parts 61 with equal angle distribution. Each clamping mechanism 60 receives power through the second transmission gear 52 and rotates synchronously.

[0052] The included angle between two adjacent clamping mechanisms 60 is 120°, which means that the three clamping mechanisms 60 are evenly distributed at fixed intervals in the circumferential direction. Specifically, the installation angle of the clamping mechanism 60 can be determined by the projection position relationship of the planetary gear system, so that the rotation trajectory of the clamping mechanism 60 matches the motion phase of the planetary gear 32.

[0053] Specifically, the three clamping mechanisms 60 are located at the midpoint of the projection area of ​​adjacent planetary gears 32, forming a spatially staggered arrangement between the planetary gears 32 and the clamping mechanisms 60. When the sun gear 31 drives the planetary gears 32 to rotate, the rotating shaft 33 drives the first transmission gear 51 to rotate, and the second transmission gear 52 transmits power to the clamping mechanisms 60. The three clamping mechanisms 60 rotate synchronously at 120° intervals. During rotation, the outer edge of the clamping member 61 forms a continuous envelope trajectory, and the bar stock 80 is clamped within the dynamic channel formed by the three clamping members 61. The diameter of the channel is slightly smaller than the outer diameter of the bar stock 80, forcing the bar stock 80 to move continuously along the axial direction under friction.

[0054] This embodiment further proposes a drive mechanism 10 including a drive source 11 and a main shaft 12 connected to the output end of the drive source 11. The sun gear 31 is connected to the main shaft 12.

[0055] In this design, drive source 11 refers to a device that provides rotational power, specifically an electric motor, to provide power input for the entire feeding device. Main shaft 12 is a transmission component directly connected to the output end of drive source 11, specifically a rigid shaft, used to transmit the rotational power of drive source 11 to sun gear 31. The connection between sun gear 31 and main shaft 12 means that they are mechanically fixed together, specifically using a key connection, to ensure that sun gear 31 can rotate synchronously with main shaft 12, thereby transmitting power to the planetary gear train.

[0056] Specifically, after the drive source 11 starts, it drives the main shaft 12 to rotate. The main shaft 12 transmits power to the sun gear 31 connected to it. The sun gear 31 distributes the power to multiple planet gears 32 through meshing transmission with planet gears 32. The planet gears 32 transmit the power to the first transmission gear 51 through the rotating shaft 33. The first transmission gear 51 drives the second transmission gear 52 to rotate, ultimately driving the clamping mechanism 60 to complete the clamping and rotating feeding action of the bar stock 80. Thus, the direct connection between the drive source 11 and the main shaft 12 avoids energy loss in intermediate transmission links, and at the same time achieves synchronous control of the multi-stage transmission system through a single power source.

[0057] Combination Figures 5 to 7 This embodiment further proposes that the continuous bar feeding device also includes a frame 20 for mounting the drive mechanism 10 and the base 70. The frame 20 includes a first fixed seat 21, a connecting plate 22, and a second fixed seat 23. The connecting plate 22 is configured to connect the first fixed seat 21 and the second fixed seat 23. The first fixed seat 21 is used to mount the drive mechanism 10. The second fixed seat 23 is used to mount the base 70.

[0058] The frame 20 refers to the basic support structure used to support the drive mechanism 10 and the base 70. Specifically, it can be assembled into a rigid integral structure by welding or bolting the first fixed seat 21, the connecting plate 22, and the second fixed seat 23 to achieve the stability of the main structure of the equipment. The first fixed seat 21 is the mounting base used to position the drive mechanism 10. Specifically, the first fixed seat 21 includes a first fixed plate 211 with positioning holes and a first annular base 212 fixedly connected to the first fixed plate 211, ensuring the coaxiality of the main shaft 12 of the drive mechanism 10 and the transmission mechanism. The connecting plate 22 is the structural component connecting the first fixed seat 21 and the second fixed seat 23. Specifically, it can be made of rectangular steel plate to enhance the overall torsional resistance of the frame 20. The second fixed seat 23 is the supporting component used to mount the base 70. Specifically, the second fixed seat 23 includes a second fixed plate 231 with positioning holes and a second annular base 232 fixedly connected to the second fixed plate 231.

[0059] Specifically, the drive mechanism 10 is bolted to the mounting surface of the first fixed seat 21, and the base 70 is mounted on the rotary bearing of the second fixed seat 23. The two ends of the connecting plate 22 are welded to the first fixed seat 21 and the second fixed seat 23 respectively to form a closed frame structure. When the drive mechanism 10 is running, power is transmitted to the first transmission mechanism 30 through the main shaft 12. The base 70 maintains stable rotation under the support of the second fixed seat 23, and the overall structure of the frame 20 effectively disperses the vibration load generated by the operation of the equipment.

[0060] like Figure 9 As shown, this embodiment further proposes a base 70 including a second support plate 71 and a connecting column 72 fixed to the side of the second support plate 71 away from the first support plate 40. The connecting column 72 is rotatably connected to the second fixed seat 23. The second support plate 71 has mounting holes 73 for rotatably engaging with the rotating shaft 33; therefore, the number of mounting holes 73 is the same as the number of rotating shafts 33. The mounting holes 73 may be equipped with bearings to achieve rotatable engagement with the rotating shaft 33.

[0061] The second support plate 71 is a plate-shaped support component used to support the clamping mechanism 60 and the bar stock 80. It can be made of sheet metal and has through holes for the bar stock 80 to pass through for continuous feeding. The connecting column 72 is a column-shaped component used to achieve a rotatable connection between the base 70 and the frame 20. It can be a rotating shaft structure with bearings. The rotating shaft also has through holes for the bar stock 80 to pass through for continuous feeding. By embedding the end of the connecting column 72 into the bearing seat of the second fixed seat 23, the base 70 can rotate around the axis.

[0062] Specifically, the second support plate 71 forms a rotating pair with the second fixed seat 23 via the connecting column 72. When the drive mechanism 10 drives the first transmission mechanism 30 to rotate, the second support plate 71 can rotate synchronously around the axis of the connecting column 72. This structure allows the base 70 to rotate coaxially with the planetary gear train while supporting the clamping mechanism 60, maintaining the synchronicity of movement between each clamping mechanism 60 and the transmission mechanism. A rolling bearing, such as a deep groove ball bearing or a tapered roller bearing, can be installed between the connecting column 72 and the second fixed seat 23 to reduce rotational friction resistance.

[0063] In some specific embodiments, the connecting column 72 can adopt a stepped shaft structure, with its large-diameter section fixed to the bottom surface of the second support plate 71 by bolts, and the small-diameter section assembled in the bearing hole of the second fixed seat 23. The second support plate 71 can be designed as a ring structure, with a circular channel in the center with a diameter slightly larger than the outer diameter of the bar stock 80. The inner wall of the channel can be provided with a wear-resistant bushing to reduce friction loss.

[0064] It should be noted that, for ease of understanding, this embodiment uses a circular shape for the bar stock 80. The shape of the bar stock 80 can be one of a circle, a square, or a polygon. Correspondingly, the shape of the internal hole of the spindle 12 and the shape of the mating surface of the clamping member 61 are also adjusted to adapt to the shape of the bar stock 80.

[0065] The working principle of this invention is as follows: The drive mechanism 10 drives the sun gear 31 to rotate, which in turn drives multiple planet gears 32 to rotate. The planet gears 32 drive the first support plate 40 to rotate via the shaft 33, simultaneously driving the first transmission gear 51 to rotate. The first transmission gear 51 transmits power to the second transmission gear 52 through meshing, and the second transmission gear 52 drives the clamping mechanism 60 to rotate. The diameter of the channel used by the multiple clamping mechanisms 60 to hold the bar stock 80 is smaller than the diameter of the bar stock 80. When the bar stock 80 enters the clamping mechanism 60, the clamping members 61 adhere to the surface of the bar stock 80, simultaneously driving the bar stock 80 to move along its axial direction.

[0066] The clamping member 61 is in contact with the surface of the bar stock 80, which means that the clamping mechanism 60 contacts the bar stock 80 through the radial pressure generated by rotation. Specifically, a gear-type clamping member 61 can be used, whose tooth surface forms rolling friction with the outer surface of the bar stock 80, thereby pushing the bar stock 80 to move axially during rotation.

[0067] The fact that the channel diameter is smaller than the diameter of the bar stock 80 means that the space formed by the clamping mechanism 60 is slightly smaller than the outer diameter of the bar stock 80. Specifically, the clamping force can be adaptively adjusted by adjusting the installation position of the clamping component 61 to ensure that the bar stock 80 is stably clamped.

[0068] Specifically, when the drive mechanism 10 is activated, the sun gear 31 begins to rotate, driving the planetary gears 32 to rotate. The rotation of the planetary gears 32 is transmitted to the first transmission gear 51 via the shaft 33. After the first transmission gear 51 meshes with the second transmission gear 52, it transmits power to the clamping mechanism 60, causing it to rotate around the axis of the bar stock 80. During rotation, the clamping member 61 in the clamping mechanism 60 contacts the surface of the bar stock 80. Since the diameter of the channel formed by the clamping mechanism 60 is smaller than the diameter of the bar stock 80, the clamping member 61 applies radial pressure to the bar stock 80, while simultaneously driving the bar stock 80 to move continuously along the axial direction through friction. In this process, the rotational movement and axial movement of the bar stock 80 are synchronized, enabling continuous feeding without interrupting equipment operation.

[0069] Compared with the prior art, the prior art requires stopping the machine to replace the bar stock 80 and realign the top rod, which leads to a drop in the temperature of the additive body and a reduction in efficiency. In contrast, the present invention drives the bar stock 80 to move axially through the continuous rotation of the clamping mechanism 60, avoiding machine downtime. At the same time, it uses a single power source to realize the clamping and rotation actions, simplifying the power system structure.

[0070] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0071] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A continuous bar feeding device, characterized in that, include: Drive mechanism (10); The first transmission mechanism (30) includes a sun gear (31) connected to the output end of the drive mechanism (10), a plurality of planet gears (32) meshing with the sun gear (31) and a rotating shaft (33) axially passing through the planet gears (32); the sun gear (31) and the planet gears (32) are disposed on a first horizontal plane; The second transmission mechanism (50) includes a first transmission gear (51) connected to the rotating shaft (33) and a second transmission gear (52) meshing with the first transmission gear (51). Multiple clamping mechanisms (60) are provided on the second horizontal plane; the clamping mechanism (60) includes a bearing seat (62) that is connected to the second transmission gear (52) and a clamping member (61) provided on the bearing seat (62). The clamping member (61) of the plurality of clamping mechanisms (60) clamps the bar stock (80) and causes the bar stock (80) to rotate axially.

2. The continuous bar feeding device according to claim 1, characterized in that, The center of the plurality of clamping mechanisms (60) and the center of the sun gear (31) are on the same axis.

3. The continuous bar feeding device according to claim 1, characterized in that, The clamping member (61) is a gear; the outer edge of the gear is attached to the surface of the bar stock (80).

4. The continuous bar feeding device according to claim 1, characterized in that, It also includes a first support plate (40) and a base (70); the surface of the first support plate (40) is a first horizontal plane, the surface of the base (70) is a second horizontal plane, and both the first support plate (40) and the base (70) have channels for the bar stock (80) to pass through; the end of the rotating shaft (33) away from the planetary gear (32) is rotatably connected to the base (70); the bearing seat (62) is fixed to the base (70).

5. The continuous bar feeding device according to claim 1, characterized in that, The planetary gears (32) are provided in three parts, and the three planetary gears (32) are arranged in a ring around the sun gear (31); the included angle between two adjacent planetary gears (32) is 120°.

6. The continuous bar feeding device according to claim 5, characterized in that, The clamping mechanism (60) is provided in three parts, and the three clamping mechanisms (60) are located between the orthographic projections of two adjacent planetary gears (32) on the second horizontal plane, and the included angle between two adjacent clamping mechanisms (60) is 120°.

7. The continuous bar feeding device according to claim 1, characterized in that, The drive mechanism (10) includes a drive source (11) and a main shaft (12) connected to the output end of the drive source (11); the sun gear (31) is connected to the main shaft (12).

8. The continuous bar feeding device according to claim 4, characterized in that, It also includes a frame (20) for mounting the drive mechanism (10) and the base (70); the frame (20) includes a first fixing seat (21), a connecting plate (22) and a second fixing seat (23), the connecting plate (22) being configured to connect the first fixing seat (21) and the second fixing seat (23); the first fixing seat (21) is used to mount the drive mechanism (10); the second fixing seat (23) is used to mount the base (70).

9. The continuous bar feeder according to claim 8, characterized in that, The base (70) includes a second support plate (71) and a connecting column (72) fixed to the side of the second support plate (71) away from the first support plate (40); the connecting column (72) and the second fixed seat (23) are rotatably connected.

10. A method of using a continuous bar feeding device, characterized in that, The continuous bar feeder as described in any one of claims 1-9 comprises the following steps: The drive mechanism (10) drives the sun gear (31) to rotate, and the sun gear (31) drives multiple planet gears (32) to rotate. The planet gears (32) drive the first support plate (40) to rotate through the rotating shaft (33), and at the same time drive the first transmission gear (51) to rotate. The first transmission gear (51) transmits power to the second transmission gear (52) through meshing. The second transmission gear (52) drives the clamping mechanism (60) to rotate. The diameter of the channel used by the multiple clamping mechanisms (60) to form the bar stock (80) is smaller than the diameter of the bar stock (80). When the bar stock (80) enters the clamping mechanism (60), the clamping member (61) fits against the surface of the bar stock (80) and drives the bar stock (80) to move along its axial direction.

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