A bar material feeding device

Abstract

The present invention relates to a bar feeding device, comprising a frame, a feeding conveying mechanism, a rotating feeding mechanism and a pushing mechanism; a feeding channel and a discharging channel are arranged on the upper part of the frame; the feeding conveying mechanism comprises a first pusher, which is slidably connected to the frame, and is used to push the bar to move in the feeding channel; the rotating feeding mechanism comprises a second pusher and a rotating driving assembly, which is slidably connected to the frame, and is used to push the bar in the feeding channel into the discharging channel, and the rotating driving assembly comprises a driving wheel, and a roller is arranged at the end of the second pusher, and a space for accommodating the bar is formed between the driving wheel and the roller; the pushing mechanism comprises a top assembly, which is slidably connected to the frame, and is used to push the bar in the discharging channel out. The present invention can automatically realize the feeding of bar materials, and effectively improve the feeding efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bar material feeding, and in particular to a bar material feeding device. Background Art

[0002] Friction stir welding is a mainstream method of solid-phase additive manufacturing and an additive manufacturing technology based on the principle of friction welding. The working principle of friction stir welding additive technology is to use a consumable rod to rotate through a stirring tool to contact and rub with the substrate. The heat energy generated by friction will soften the end of the rod, and under the extrusion of the axial force, it will flow out from the outlet end of the stirring tool and deposit on the substrate. As the rod moves laterally and gradually presses down, a single additive layer is formed on the substrate. The frictional heat and friction deformation work will cause the additive layer to form fine and uniform grains under the action of temperature field and plastic deformation. The material will not melt during the friction deposition process, so that the mismatch between the substrate and the additive layer has less influence, and thus the combination of dissimilar materials can be better achieved. The grains of the additive layer are small and uniform, and the mechanical properties are good.

[0003] Since the friction stir welding additive equipment needs to stop and perform manual loading after consuming each bar during operation, the loading efficiency is low, resulting in a long processing cycle and failure to meet the needs of efficient processing. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of low loading efficiency of the friction stir welding additive equipment in the prior art.

[0005] In order to solve the above technical problems, the present invention provides a bar material feeding device, comprising:

[0006] A frame, wherein a feed channel and a discharge channel are arranged on the upper part of the frame, and the insides of the feed channel and the discharge channel are both used to accommodate the rods;

[0007] A feeding and conveying mechanism, the feeding and conveying mechanism comprises a first pusher, the first pusher is slidably connected to the frame, the first pusher is driven by a first push driving device to perform linear motion, and the first pusher is used to push the bar material to move in the feeding channel;

[0008] A rotary feeding mechanism, the rotary feeding mechanism comprises a second pusher and a rotary driving assembly, the second pusher is slidably connected to the frame, the second pusher is driven by the second push driving device to make linear motion, the second pusher is used to push the bar material in the feed channel to the discharge channel, the rotary driving assembly comprises a driving wheel for contacting with the bar material, the driving wheel is driven to rotate by the rotary driving device, the end of the second pusher is provided with a roller for contacting with the bar material, and a space for accommodating the bar material is formed between the driving wheel and the roller;

[0009] The ejection mechanism includes a top assembly, the top assembly is connected to the frame in a liftable manner, the top assembly is driven to move up and down by a lifting drive device, the top assembly is located above the discharge channel, and the top assembly is used to push out the bar material in the discharge channel;

[0010] Wherein, the moving direction of the second pushing member is perpendicular to the moving direction of the first pushing member.

[0011] In one embodiment of the present invention, the top assembly includes a lifting seat and a top body, the lifting seat is connected to a support sleeve, and the top body is rotatably connected to the support sleeve.

[0012] In one embodiment of the present invention, the rotation driving device comprises a servo motor, the output shaft of the servo motor is connected to a synchronous wheel, and the synchronous wheel and the driving wheel are connected via a synchronous belt.

[0013] In one embodiment of the present invention, the rotary drive device comprises two driving wheels, and the synchronous wheel and the two driving wheels are both located inside the synchronous belt.

[0014] In one embodiment of the present invention, the first push member includes a push plate, the push plate is connected to the first push drive device, the push plate is connected to at least one push block from top to bottom, and the push block is used to push the rod to move in the feed channel.

[0015] In one embodiment of the present invention, a first sliding block is connected to the push plate, the first sliding block is slidably connected to a first sliding rail, and the first sliding rail is connected to the frame.

[0016] In one embodiment of the present invention, the frame is provided with at least two second pushing members from top to bottom.

[0017] In one embodiment of the present invention, a limit plate is also connected to the frame, and the limit plate is located on one side of the feed port of the feed channel. The limit plate is provided with a plurality of open grooves facing the feed port of the feed channel, and the plurality of open grooves are arranged in sequence along the pushing direction of the first pushing member. The open grooves are used to insert a baffle, and the baffle is located between two adjacent rods in the feed channel.

[0018] In one embodiment of the present invention, the bottom end of the discharge channel is connected to an outlet guide assembly, the outlet guide assembly includes an outer cylinder, a mounting cavity is arranged inside the outer cylinder, an inner cylinder is connected inside the mounting cavity, the inner cylinder and the discharge channel are communicated, a damping rubber ring is arranged on the upper part of the inner cylinder, the inner cylinder presses the damping rubber ring against the end surface of the mounting cavity, and the axes of the inner cylinder and the damping rubber ring coincide with the axis of the discharge channel.

[0019] In one embodiment of the present invention, the first push drive device, the second push drive device and the lifting drive device all use cylinders.

[0020] The above technical solution of the present invention has the following advantages compared with the prior art:

[0021] The bar feeding device described in the present invention can automatically feed the bar and realize continuous loading, which effectively improves the loading efficiency, shortens the processing cycle, and meets the needs of efficient processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0023] Figure 1 is a schematic diagram of the three-dimensional structure of the bar material feeding device of the present invention;

[0024] Figure 2 yes Figure 1 A front view of the bar feeding device shown;

[0025] Figure 3 yes Figure 2 A top view of the bar feeding device shown;

[0026] Figure 4 yes Figure 2 Cross-sectional view of the middle structure in the AA direction;

[0027] Figure 5 yes Figure 2 Cross-sectional view of the middle structure in the BB direction;

[0028] Figure 6 yes Figure 2 Cross-sectional view of the middle structure in CC direction;

[0029] Figure 7 This is the schematic diagram of the bar rotation drive;

[0030] Figure 8 yes Figure 1 Schematic diagram of the internal structure of the middle bar material feeding device;

[0031] Fig. 9 It is a schematic diagram of the movement of the feed conveying mechanism;

[0032] Fig.10 yes Fig. 9 A schematic diagram of the structure from another angle;

[0033] Fig.11 It is a structural diagram of the feeding and conveying mechanism;

[0034] Fig.12 It is a structural schematic diagram of the ejection mechanism;

[0035] Fig.13 yes Fig.12 A partial enlarged schematic diagram of the M in the middle;

[0036] Description of the Figures in the Specification:

[0037] 10. frame; 101. feeding channel; 102. discharging channel; 103. first slide rail; 104. limit plate; 1041. opening slot; 105. baffle;

[0038] 20. Feed conveying mechanism; 201. First push member; 2011. Push plate; 2012. Push block; 202. First push drive device; 203. First slide block;

[0039] 30. Rotary feeding mechanism; 301. Second push member; 3011. Roller; 302. Second push drive device; 303. Drive wheel; 304. Rotary drive device; 3041. Servo motor; 3042. Synchronous wheel; 3043. Synchronous belt;

[0040] 40, material ejection mechanism; 401, top assembly; 4011, lifting seat; 4012, top body; 4013, support sleeve; 4014, thrust bearing; 402, lifting drive device;

[0041] 50, outlet guide assembly; 501, outer cylinder; 5011, installation cavity; 502, inner cylinder; 503, damping rubber ring;

[0042] 60. Bar stock; DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0044] Reference Figure 1-Figure 6 As shown, this embodiment discloses a bar material feeding device, including a frame 10, a feeding conveying mechanism 20, a rotating feeding mechanism 30 and a lifting mechanism 40;

[0045] A feed channel 101 and a discharge channel 102 are provided on the upper portion of the frame 10. The feed channel 101 and the discharge channel 102 are used to accommodate the bar material 60.

[0046] The feeding and conveying mechanism 20 includes a first push member 201, which is slidably connected to the frame 10. The first push member 201 is driven by a first push driving device 202 to perform linear motion. The first push member 201 is used to push the bar 60 to move in the feeding channel 101, so as to push the bar 60 to a position close to the discharging channel 102.

[0047] The rotary feeding mechanism 30 includes a second push member 301 and a rotary drive assembly. The second push member 301 is slidably connected to the frame 10. The second push member 301 is driven by a second push drive device 302 to perform linear motion. The second push member 301 is used to push the bar material 60 in the feed channel 101 into the discharge channel 102. The rotary drive assembly includes a drive wheel 303 for contacting the bar material 60. The drive wheel 303 is driven to rotate by the rotary drive device 304. The end of the pusher 301 is provided with a roller 3011 for contacting the bar 60, and a space for accommodating the bar 60 is formed between the driving wheel 303 and the roller 3011; when the bar 60 is located in the space, and the driving wheel 303 and the roller 3011 are respectively contacted with the bar 60, the driving wheel 303 rotates to drive the bar 60 to rotate, so that the bar 60 obtains an initial rotation speed, so that the bar 60 can maintain the rotation speed output to meet the subsequent processing requirements;

[0048] The ejection mechanism 40 includes a top assembly 401, which is liftably connected to the frame 10 and driven to move up and down by a lifting drive device 402. The top assembly 401 is located above the discharge channel 102 and is used to push out the rod 60 in the discharge channel 102.

[0049] The moving direction of the second push member 301 is perpendicular to the moving direction of the first push member 201. Figure 3 As shown, the X direction is the moving direction of the first pushing member 201 , and the Y direction is the moving direction of the second pushing member 301 .

[0050] The bar feeding device of the above structure can transport the bar 60 from the feed channel 101 to the vicinity of the discharge channel 102 through the feed conveying mechanism 20, and then push the bar 60 in the feed channel 101 to the discharge channel 102 through the second pushing member 301 in the rotating feeding mechanism 30, and drive the bar 60 to rotate, and finally the ejecting mechanism 40 ejects the bar 60 into the stir friction welding equipment, thereby realizing automatic and continuous loading, eliminating the need for manual loading, and greatly improving the loading efficiency.

[0051] In one embodiment, if Figure 12-13 As shown, the top assembly 401 includes a lifting seat 4011 and a top body 4012 . The lifting seat 4011 is connected to a support sleeve 4013 , and the top body 4012 is rotatably connected in the support sleeve 4013 .

[0052] The top body 4012 is used to press the bar 60 in the discharge channel 102 to move the bar 60 downward. When the bar 60 rotates, since the bar 60 and the top body 4012 are in contact, the bar 60 drives the top body 4012 to rotate together, so that the bar 60 can move downward while rotating.

[0053] Furthermore, a shaft body is connected to the upper end surface of the top body 4012, and the shaft body is connected to the support sleeve 4013 through a radial bearing. A thrust bearing 4014 is also connected to the shaft body, and the thrust bearing 4014 is located between the radial bearing and the upper end surface of the top body 4012;

[0054] The radial bearing is a radial rolling bearing to achieve relative rotation between the support sleeve 4013 and the shaft body and reduce friction. Since the top body 4012 is subjected to an axial force when pressed down, a thrust bearing 4014 is also provided on the shaft body to withstand a certain axial force.

[0055] In one embodiment, if Figure 5 and Figure 7 As shown, the rotation driving device 304 includes a servo motor 3041 , and a synchronous wheel 3042 is connected to the output shaft of the servo motor 3041 . The synchronous wheel 3042 and the driving wheel 303 are connected via a synchronous belt 3043 .

[0056] The servo motor 3041 drives the synchronous wheel 3042 to rotate, and the synchronous wheel 3042 drives the driving wheel 303 to rotate through the synchronous belt 3043. When the bar 60 is squeezed between the roller 3011 of the second push member 301 and the driving wheel 303, that is, when the driving wheel 303 and the roller 3011 are respectively pressed against the two sides of the bar 60, the rotation of the driving wheel 303 will drive the bar 60 to rotate, and at this time the roller 3011 also rotates accordingly, that is, the bar 60 can rotate under the joint action of the driving wheel 303 and the roller 3011.

[0057] Furthermore, if Figure 7 , Figure 8 and Fig. 9As shown, the rotation drive device 304 includes two driving wheels 303, and the synchronous wheel 3042 and the two driving wheels 303 are both located inside the synchronous belt 3043. Specifically, the two driving wheels 303 are located on the same side of the bar 60, and a triangular structure is formed between the synchronous wheel 3042 and the two driving wheels 303. The driving wheel 303 drives the two driving wheels 303 to rotate simultaneously through the synchronous belt 3043. At this time, the bar 60 rotates under the joint action of the two driving wheels 303 and the roller 3011.

[0058] The arrangement of the two driving wheels 303 can increase the contact stability of the driving wheels 303 with the bar 60 , thereby better driving the bar 60 to rotate.

[0059] The upper and lower parts of the second pushing member 301 may be provided with rollers 3011 .

[0060] In one embodiment, if Figure 10-11 As shown, the first push member 201 includes a push plate 2011 , which is connected to the first push driving device 202 . The push plate 2011 is connected to at least one push block 2012 from top to bottom, and the push block 2012 is used to push the bar material 60 to move in the feed channel 101 .

[0061] For example, three push blocks 2012 may be arranged on the push plate 2011 from top to bottom, and the three push blocks 2012 may jointly push a bar 60 forward, thereby better ensuring the movement stability of the bar 60 .

[0062] In one embodiment, a first slider 203 is connected to the push plate 2011 . The first slider 203 is slidably connected to the first slide rail 103 . The first slide rail 103 is connected to the frame 10 to ensure stable movement of the push plate 2011 .

[0063] Furthermore, first sliding blocks 203 may be provided at both the upper and lower parts of the push plate 2011 , and each first sliding block 203 corresponds to a first slide rail 103 , thereby better ensuring the movement accuracy and stability of the push plate 2011 .

[0064] In one embodiment, the frame 10 is provided with at least two second push members 301 from top to bottom to better ensure the pushing stability of the bar 60 and prevent the bar 60 from tilting.

[0065] In one embodiment, if Figure 3 and Figure 8As shown, a limit plate 104 is also connected to the frame 10, and the limit plate 104 is located on one side of the feed port of the feed channel 101. The limit plate 104 is provided with a plurality of open grooves 1041 facing the feed port of the feed channel 101. The plurality of open grooves 1041 are arranged in sequence along the pushing direction of the first pushing member 201. The open grooves 1041 are used to insert a baffle 105, and the baffle 105 is located between two adjacent rods 60 in the feed channel 101.

[0066] The feed port of the feed channel 101 is located above the feed channel 101. The blocking piece 105 can be inserted to prevent the bar 60 from tipping over during the insertion process. After each bar 60 is loaded, the blocking piece 105 is inserted into the corresponding opening groove 1041, so that the blocking piece 105 is located between two adjacent bars 60 to prevent the bar 60 from tipping over. When the bar 60 is subsequently pushed forward, the blocking piece 105 only needs to be taken out.

[0067] In one embodiment, if Figure 4 As shown, the bottom end of the discharge channel 102 is connected to an outlet guide assembly 50, and the outlet guide assembly 50 includes an outer cylinder 501, a mounting cavity 501 is arranged inside the outer cylinder 501, an inner cylinder 502 is connected inside the mounting cavity 5011, the inner cylinder 502 and the discharge channel 102 are communicated, a damping rubber ring 503 is arranged on the upper part of the inner cylinder 502, the inner cylinder 502 presses the damping rubber ring 503 against the end face of the mounting cavity 5011, and the axes of the inner cylinder 502 and the damping rubber ring 503 coincide with the axis of the discharge channel 102.

[0068] The damping rubber ring 503 can increase the resistance to the downward movement of the rod 60 and prevent the rod 60 from slipping out of the inner tube 502 under the action of its own weight. The rod 60 will be ejected only when the top assembly 401 of the ejection mechanism 40 presses against the rod 60 and overcomes the resistance of the damping rubber ring 503, thereby improving reliability.

[0069] Specifically, when the rod 60 enters the outlet guide assembly 50, it will first penetrate into the damping rubber ring 503, and the inner wall of the damping rubber ring 503 will be in close contact with the rod 60, thereby achieving the effect of increasing damping.

[0070] Furthermore, when the inner cylinder 502 is provided, a transition fit installation method may be adopted between the inner cylinder 502 and the rod 60 , thereby better preventing the rod 60 from falling out due to its own weight.

[0071] The inner cylinder 502 may be a nylon sleeve or a copper sleeve. The copper sleeve may be a self-lubricating copper sleeve.

[0072] The outer cylinder 501 and the inner cylinder 502 may be connected by bolts to facilitate replacement and disassembly.

[0073] In one embodiment, the first push drive device 202, the second push drive device 302 and the lifting drive device 402 are all cylinders.

[0074] Furthermore, the first push drive device 202 and the lifting drive device 402 both use rodless cylinders, and the second push drive device 302 uses a rod cylinder.

[0075] Among them, the rodless cylinder has a compact structure and a long lead, and is more suitable for the working conditions of feeding, pushing and ejecting materials.

[0076] The rodless cylinders are all connected with magnetic induction switches for sensing the position of the piston inside the rodless cylinders, thereby accurately monitoring the moving position of the bar 60 and ensuring that the bar 60 is moved into place.

[0077] In order to monitor whether the bars inside the feeding device are used up, a photoelectric sensor is installed on the frame 10 near the position of the last bar; when the last bar is used up, the system issues a reloading reminder, and the feeding conveying mechanism 20 returns to the initial position.

[0078] The following is a specific example to illustrate the feeding process of the above-mentioned bar feeding device:

[0079] Multiple bars are sequentially placed in the feed channel 101. When the feed channel 101 is full, the first push drive device 202 of the feed conveying mechanism 20 is started, and the first push drive device 202 drives the first push member 201 to move forward, so that the first push member 201 pushes all the bars forward in the feed channel 101, and the bar at the front in the feed channel 101 is recorded as the first bar;

[0080] When the first bar material is pushed to the designated position (the designated position is located on one side of the discharge channel 102), the second push driving device 302 in the rotary feeding mechanism 30 is started, and the second push driving device 302 drives the second push member 301 to move until the roller 3011 on the second push member 301 contacts the first bar material and pushes the first bar material from the feed channel 101 to the discharge channel 102. At this time, the first bar material is located between the roller 3011 and the driving wheel 303 of the rotary driving assembly, and both the roller 3011 and the driving wheel 303 are in contact with the first bar material;

[0081] The driving wheel 303 is driven to rotate by the rotary driving device 304, thereby driving the first bar to rotate;

[0082] The lifting drive device 402 drives the top assembly 401 to move downward, so that the top body 4012 presses down the first rod in the discharge channel 102, so that the first rod enters the inner tube 502 of the outlet guide assembly 50 and is finally ejected from the inner tube 502. After being ejected, the first rod enters the stir friction welding additive equipment, thereby realizing automatic loading.

[0083] In the above process, after the first rod is pushed from the feed channel 101 to the discharge channel 102, the lifting drive device 402 can also drive the top assembly 401 to move downward, so that the top body 4012 presses the first rod in the discharge channel 102 to move downward to a specified position, and then the driving wheel 303 is rotated to drive the first rod to rotate. When the rotation speed of the first rod reaches the requirement, the top body 4012 is moved downward again, so that the top body 4012 is used to press the first rod to make it continue to move downward until it is pushed out.

[0084] The above process allows the first bar to be pushed out while maintaining a certain rotation speed, so that the first bar loaded into the friction stir welding additive device itself has a certain initial rotation speed; in other cases, if the above initial rotation speed is not required, the rotation drive device 304 may not be started.

[0085] It can be understood that when the first bar is pushed out of the outlet guide assembly 50 by about 3 / 4 of its length, the second push member 301 can be controlled to return to its original position, so as to push the next bar, allowing the next bar to enter the discharge channel 102, thereby achieving docking with the first bar and realizing continuous loading.

[0086] The bar feeding device of the above-mentioned embodiment can automatically realize bar feeding, has a high degree of automation, and can realize continuous loading, effectively improving the loading efficiency, ensuring the continuity of the solid additive process, shortening the process cycle, improving production efficiency and equipment operation convenience, and meeting the needs of efficient processing.

[0087] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A bar material feeding device, Features: include, A frame, wherein a feed channel and a discharge channel are arranged on the upper part of the frame, and the insides of the feed channel and the discharge channel are both used to accommodate the rods; A feeding and conveying mechanism, the feeding and conveying mechanism comprises a first pusher, the first pusher is slidably connected to the frame, the first pusher is driven by a first push driving device to perform linear motion, and the first pusher is used to push the bar material to move in the feeding channel; A rotary feeding mechanism, the rotary feeding mechanism comprises a second pusher and a rotary driving assembly, the second pusher is slidably connected to the frame, the second pusher is driven by the second push driving device to make linear motion, the second pusher is used to push the bar material in the feed channel to the discharge channel, the rotary driving assembly comprises a driving wheel for contacting with the bar material, the driving wheel is driven to rotate by the rotary driving device, the end of the second pusher is provided with a roller for contacting with the bar material, and a space for accommodating the bar material is formed between the driving wheel and the roller; The ejection mechanism includes a top assembly, the top assembly is connected to the frame in a liftable manner, the top assembly is driven to move up and down by a lifting drive device, the top assembly is located above the discharge channel, and the top assembly is used to push out the bar material in the discharge channel; Wherein, the moving direction of the second push member is perpendicular to the moving direction of the first push member; The top assembly includes a lifting seat and a top body, the lifting seat is connected to a support sleeve, and the top body is rotatably connected to the support sleeve; The rotary drive device comprises a servo motor, the output shaft of the servo motor is connected to a synchronous wheel, and the synchronous wheel and the driving wheel are connected via a synchronous belt; The rotary drive device comprises two driving wheels, and the synchronous wheel and the two driving wheels are both located inside the synchronous belt; The frame is provided with at least two second push members from top to bottom; The bottom end of the discharge channel is connected to an outlet guide assembly, the outlet guide assembly includes an outer cylinder, a mounting cavity is arranged inside the outer cylinder, an inner cylinder is connected inside the mounting cavity, the inner cylinder and the discharge channel are communicated, a damping rubber ring is arranged on the upper part of the inner cylinder, the inner cylinder presses the damping rubber ring against the end surface of the mounting cavity, and the axes of the inner cylinder and the damping rubber ring coincide with the axis of the discharge channel; The first push drive device, the second push drive device and the lifting drive device all use cylinders.

2. The bar feeding device according to claim 1, Features: The first push member comprises a push plate, the push plate is connected to the first push driving device, the push plate is connected to at least one push block from top to bottom, and the push block is used to push the rod material to move in the feed channel.

3. The bar material feeding device according to claim 2, Features: The push plate is connected with a first slider, the first slider is slidably connected to a first slide rail, and the first slide rail is connected to the frame.

4. The bar feeding device according to claim 1, Features: The frame is also connected to a limit plate, which is located on one side of the feed port of the feed channel. The limit plate is provided with a plurality of open grooves facing the feed port of the feed channel. The plurality of open grooves are arranged in sequence along the pushing direction of the first pushing member. The open grooves are used to insert a baffle, and the baffle is located between two adjacent rods in the feed channel.

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