Novel automatic wire feeding mechanism

Abstract

The utility model discloses a novel automatic wire feeding mechanism which comprises a supporting frame, a lifting frame, a lifting mechanism installation frame, a wire pushing trolley and a wire pulling mechanism, the lifting frame is obliquely arranged on the supporting frame, cross beams are arranged on the three side faces of the supporting frame, an inlet is formed in the side, not provided with the cross beams, of the supporting frame, and the wire pushing trolley enters the supporting frame through the inlet. First lead screws are arranged on the front side and the rear side of the lifting frame respectively, the lifting mechanism installation frame is arranged between the first lead screws, the wire shifting mechanism comprises a shifting fork installation frame, a servo motor and a second lead screw, the second lead screw and the servo motor are installed on the lifting mechanism installation frame, and the shifting fork installation frame is connected with the second lead screw through a lead screw nut. The upper end of the shifting fork is fixed on the shifting fork mounting frame; a servo motor is adopted to drive a ball screw to be matched with a synchronous belt transmission structure, a traditional roller chain shaft special-shaped chain mechanism is omitted, and efficient lifting and wire shifting operation is achieved; and through the design of the inclined lifting frame, the overall height and the occupied area of the equipment are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic wire feeding, in particular to a novel automatic wire feeding mechanism. Background Art

[0002] At present, in the automatic sorting production line in the field of intelligent manufacturing, for the application scenario of taking wire, sorting and packing the multi-layer high wire car (especially the four-layer high wire car) at the sorting station, the traditional wire feeding mechanism design is generally adopted. Such traditional technologies are mainly realized through the following two schemes: raising the working frame of the wire feeding mechanism to provide sufficient height space through the high frame structure to meet the requirement of layer-by-layer wire taking of the high wire car; adopting a control structure of a special-shaped chain on a winding chain shaft, and driving the special-shaped chain to wind and lift by the winding chain shaft to realize the automatic wire feeding operation of the multi-layer wire car.

[0003] However, the existing technologies have obvious limitations and deficiencies, specifically including: problems existing in the high frame design; the large space required for the wire feeding mechanism with the high frame design, high cost, and complex and diverse designed parts, which on the one hand increases the complexity of writing the automatic control program, and on the other hand, the later equipment maintenance is relatively difficult. Although using the control of the special-shaped chain on the winding chain shaft can make up for the disadvantage in space, the rigidity of the special-shaped chain is insufficient and the deformation amounts are inconsistent, and it is very easy to occur the phenomena of wire taking and bobbin dropping and bobbin contamination. To sum up, the existing technologies cannot take into account the equipment compactness, operation accuracy and system stability.

[0004] Therefore, it is urgent to propose a novel automatic wire feeding mechanism that is not limited by the installation space, has high positioning accuracy and operation stability, so as to realize more efficient and higher-quality automatic sorting and wire taking operations, and meet the requirements of the intelligent manufacturing production line for the continuous improvement of the automation level and operation accuracy. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the existing defects, and provide a novel automatic wire feeding mechanism, which has a technical scheme that is not limited by a large installation space and can be connected and sorted with the production line with high quality and high efficiency, removes the original control of the special-shaped chain on the winding chain shaft of the mechanism, and changes it to the linkage control of a servo motor, a lead screw and a synchronous belt. This not only effectively reduces the equipment placement space and the difficulty of program writing, but also ensures the normal operation rhythm of the automatic sorting line, greatly reduces the equipment cost of the sorting line, and can effectively solve the problems in the background art.

[0006] To achieve the above object, the present utility model provides the following technical solution: a novel automatic wire feeding mechanism, which includes a support frame, a lifting frame, a lifting mechanism mounting frame, a wire pushing cart and a wire dialing mechanism. The lifting frame is inclinedly arranged on the support frame. Cross beams are arranged on three sides of the support frame, and the side without the cross beam is the inlet. The wire pushing cart enters the support frame through the inlet. Lead screws one are respectively arranged on the front and rear sides of the lifting frame. The lifting mechanism mounting frame is arranged between the lead screws one. The wire dialing mechanism includes a fork mounting frame, a fork, a servo motor and a lead screw two. The lead screw two and the servo motor are mounted on the lifting mechanism mounting frame. The fork mounting frame is connected to the lead screw two through a lead screw nut. The upper end of the fork is fixed on the fork mounting frame.

[0007] Further, wire cart limiting rods are fixed on the front and rear corresponding cross beams. One end of the wire cart limiting rod corresponding to the inlet is arranged in a horn opening shape. A wire cart positioning block is arranged on the ground corresponding to the support frame.

[0008] Further, guide rails two are arranged on the two inner side surfaces of the lifting mechanism mounting frame. The guide rails two are connected to the fork mounting frame through sliders two. Photoelectric switches are arranged on the left and right sides of the upper surface of the lifting mechanism mounting frame. An induction piece two is arranged on the slider two. Limit blocks are respectively arranged on both sides of the lower surface of the lifting mechanism mounting frame.

[0009] Further, the lifting frame and the support frame are connected through a hinge assembly. The hinge assembly includes a fixed hinge seat one and a fixed hinge seat two. The fixed hinge seat one is installed on the support frame through screws. The fixed hinge seat two is fixed on the lifting frame. The fixed hinge seat one and the fixed hinge seat two are connected through a pin shaft. The heights of the fixed hinge seats one on both sides of the support frame are inconsistent.

[0010] Further, the lead screws one on the lifting frame are connected through a synchronous belt transmission mechanism. The synchronous belt transmission mechanism includes a synchronous belt and synchronous wheels. The synchronous wheels are respectively installed on the lead screws one. The synchronous wheels are connected through the synchronous belt.

[0011] Further, guide rails one are respectively arranged on both side surfaces of the lead screw one. Sliders one are arranged on the guide rails one. A lifting mounting frame is arranged on the slider one. The lifting mounting frame is fixedly connected to the lifting mechanism mounting frame. Photoelectric switches are respectively arranged above and below the lifting frame. An induction piece one is arranged on the slider one.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. The present utility model adopts a servo motor to drive a ball screw in cooperation with a synchronous belt transmission structure, cancels the traditional winding chain shaft and special-shaped chain mechanism, and realizes efficient lifting and wire dialing operations; through the inclined lifting frame design, the overall height and floor area of the equipment are effectively reduced, meeting the automation operation requirements of multi-layer high wire carts, optimizing the space layout of the production line, and improving the flexibility of equipment installation.

[0014] 2. Both the wire drawing mechanism and the lifting mechanism adopt high-precision guiding and photoelectric limit devices to ensure the synchronization and stability during the wire drawing and lifting processes, and the positioning accuracy can reach ±0.5 mm. Combined with the PLC intelligent control system, the equipment realizes efficient automatic operation and multiple safety protections, effectively reducing the failure rate and the risk of product damage, and ensuring the continuity and reliability of the sorting line operation.

[0015] 3. The overall structure of the equipment is modular, which is convenient for installation, disassembly and later maintenance. The synchronous belt drive and the servo control system have high stability, reducing the maintenance frequency and cost. Compared with the traditional design, the utility model reduces the resource consumption and operation and maintenance investment during the equipment manufacturing and use processes, and improves the comprehensive utilization efficiency of the equipment and the overall efficiency of the intelligent manufacturing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the utility model;

[0017] Figure 2 is an enlarged schematic structural diagram of part A of the utility model;

[0018] Figure 3 is a schematic structural diagram of the support frame of the utility model.

[0019] In the figure: 1 wire car limit rod, 2 wire car positioning block, 3 fixed hinge seat 1, 4 fixed hinge seat 2, 5 lead screw 1, 6 guide rail 1, 7 lifting mounting frame, 8 slider 1, 9 limit block, 10 lifting mechanism mounting frame, 11 lead screw 2, 12 guide rail 2, 13 photoelectric switch, 14 synchronous belt, 15 synchronous pulley, 16 lifting frame, 17 induction piece 1, 18 induction piece 2, 19 slider 2, 20 lead screw nut, 21 fork mounting frame, 22 servo motor, 23 fork, 24 wire pushing car, 25 support frame, 26 cross beam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "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 utility model, 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 thus should not be construed as a limitation to the present utility model.

[0021] Please refer to Figures 1-3, the present utility model provides a technical solution: a novel automatic wire feeding mechanism, including a support frame 25, a lifting frame 16, a lifting mechanism mounting frame 10, a wire pushing cart 24 and a wire dialing mechanism. The lifting frame 16 is inclinedly arranged on the support frame 25. The inclined state of the lifting frame 16 can make the whole wire dialing mechanism in a certain inclined state, which is convenient for daily maintenance work. The lifting frame 16, the support frame 25 and the lifting mechanism mounting frame 10 jointly form a wire feeding frame. Cross beams 26 are arranged on three sides of the support frame 25, and the side without the cross beam 26 is the inlet. The wire pushing cart 24 enters the support frame 25 through the inlet. Lead screws 1 are respectively arranged on the front and rear sides of the lifting frame 16, and the lifting mechanism mounting frame 10 is arranged between the lead screws 1. The lifting mechanism mounting frame 10 can be driven to move up and down through the lead screws 1. The wire dialing mechanism includes a fork mounting frame 21, a fork 23, a servo motor 22 and a lead screw 2 11. The lead screw 2 11 and the servo motor 22 are mounted on the lifting mechanism mounting frame 10. The servo motor 22 is used to drive the lead screw 2 11 to operate. The fork mounting frame 21 is connected to the lead screw 2 11 through a lead screw nut 20 to realize driving the movement of the fork mounting frame 21. The upper end of the fork 23 is fixed on the fork mounting frame 21. The working principle of this wire feeding mechanism is a servo motor 22 and a lead screw linkage mechanism. The whole lifting mechanism is driven by the servo motor to descend to the working position, omitting most of the ineffective lifting stroke, and not being restricted by the relatively high space required by the four-story high wire cart. For a series of industrial products such as electric cylinders and air cylinders, the internal moving rods need a relatively long cylinder diameter and length due to the requirements of their mechanism structures, and a relatively large length of ineffective stroke is generated at the lifting position of the rods, which undoubtedly increases the requirement for the installation space.

[0022] Through the linkage mechanism of the servo motor 22 and the lead screw 2 11, the wire dialing mechanism realizes high-precision movement on the lifting mechanism mounting frame 10; the servo motor 22 drives the lead screw 2 11 to rotate, drives the fork mounting frame 21 to move linearly along the guide rail 2 12 through the lead screw nut 20, and the fork 23 moves synchronously with the fork mounting frame 21 to realize precise wire pushing operation. At the same time, the lifting mechanism mounting frame 10 is controlled to lift by the lead screw 1. The lead screw 1 is driven by a motor, and the two lead screws 1 on both sides are connected by a synchronous belt 14 and a synchronous pulley 15 to ensure the synchronous stability of the lifting actions on the left and right sides; the lifting frame 16 adopts an inclined structure relative to the support frame 25 and is hinged through a hinge assembly, which is convenient for installation and adjustment. After the wire pushing cart 24 enters the interior of the support frame 25 through the inlet, it is positioned at the set working station, and the wire dialing mechanism completes the wire pushing operation according to the program setting, ensuring the high efficiency and precision of the multi-layer high wire cart for layer-by-layer wire dialing.

[0023] On the front and rear corresponding crossbeams 26, a wire car limiting rod 1 is fixed. One end of the wire car limiting rod 1 corresponding to the inlet is set in a horn opening shape. The wire car limiting rod 1 plays a role in restricting and guiding the wire pushing car 24. On the ground corresponding to the support frame 25, a wire car positioning block 2 is provided. The wire car positioning block 2 is used to position the wire pushing car 24.

[0024] The automatic wire feeding mechanism provided by this embodiment uses the linkage control of the servo motor 22 and the ball screw to replace the traditional scroll chain shaft special-shaped chain mechanism, improving the efficiency and accuracy of the lifting and wire pushing processes. The inclined lifting frame 16 design effectively reduces the overall height and floor area of the equipment, optimizes the production line layout, and improves the flexibility of equipment installation. The wire pushing mechanism adopts a high-rigidity steel pipe structure, combined with high-precision guide rails and photoelectric limit devices, ensuring the stability of the wire pushing and lifting actions, improving the system positioning accuracy and operation reliability, and avoiding the risk of product damage caused by structural deformation; in addition, the system adopts a modular design, simplifies equipment installation and maintenance, reduces the later maintenance cost, and improves the overall economy of the equipment and the automation level of the intelligent manufacturing production line.

[0025] On the two inner side surfaces of the lifting mechanism mounting frame 10, guide rails two 12 are provided. The guide rails two 12 are connected to the fork mounting frame 21 through sliders two 19. The guide rails two 12 play a role in guiding and supporting the fork mounting frame 21, ensuring the structural stability during operation. On the left and right sides of the upper surface of the lifting mechanism mounting frame 10, photoelectric switches 13 are provided. On the slider two 19, an induction piece two 18 is provided. By the action of the servo motor 22, the fork 23 is pushed to perform the wire pushing action. The cooperation between the photoelectric switches 13 on both sides and the induction piece two 18 plays a limiting role. On both sides of the lower surface of the lifting mechanism mounting frame 10, limit blocks 9 are respectively provided. The limit blocks 9 mainly perform the mechanical mechanism protection function.

[0026] In this embodiment, by installing the wire car limiting rod 1 on the front and rear crossbeams 26 of the support frame 25, the guiding and limiting of the wire pushing car 24 are effectively realized; one end of the limiting rod 1 at the inlet is designed in a horn opening shape, facilitating the smooth entry of the wire pushing car 24 into the interior of the support frame 25, with accurate guiding and avoiding jamming caused by the deviation of the car entry; after the wire pushing car 24 enters the wire feeding mechanism, through the two-way limiting of the wire car limiting rod 1, it is stably positioned directly below the wire pushing mechanism, ensuring the accuracy of the wire pushing operation; the wire car positioning block 2 is installed at the ground position corresponding to the support frame 25, and in cooperation with the bottom positioning structure of the wire pushing car 24, the fixing of the wire pushing car 24 in the horizontal and vertical directions is realized, further improving the positioning accuracy and avoiding affecting the wire pushing process due to the displacement of the vehicle during operation.

[0027] The lifting frame 16 is connected to the support frame 25 through a hinge assembly. The hinge assembly includes a fixed hinge seat one 3 and a fixed hinge seat two 4. The fixed hinge seat one 3 is installed on the support frame 25 by screws. The fixed hinge seat two 4 is fixed on the lifting frame 16. The fixed hinge seat one 3 and the fixed hinge seat two 4 are connected by a pin shaft. This installation is convenient for disassembly, which is beneficial to assembly and transportation. The heights of the fixed hinge seat one 3 on both sides of the support frame 25 are inconsistent, thus realizing the inclined installation of the lifting frame 16. This wire feeding mechanism has a simple structure, low installation difficulty, lower procurement costs for equipment parts compared with the previous designed wire feeding mechanisms, and is convenient for later maintenance. The detachable adjustment areas of each part are designed with hinge connections, and the adjustment of the frame inclination is simple and reliable.

[0028] The lead screws one 5 on the lifting frame 16 are connected through a synchronous belt drive mechanism. The synchronous belt drive mechanism includes a synchronous belt 14 and synchronous pulleys 15. The synchronous pulleys 15 are respectively installed on the lead screws one 5, and the synchronous pulleys 15 are connected by the synchronous belt 14. A motor for driving the lead screws one 5 to work is arranged on the lifting frame 16. The synchronous belt drive mechanism is mainly used to adjust the stability of the left and right sides during the lifting process to keep it in a synchronous state and stably perform the lifting and lowering actions.

[0029] Guide rails one 6 are respectively arranged on both side surfaces of the lead screw one 5. Sliders one 8 are arranged on the guide rails one 6. A lifting mounting frame 7 is arranged on the slider one 8. The lifting mounting frame 7 is fixedly connected to the lifting mechanism mounting frame 10. Photoelectric switches 13 are respectively arranged above and below the lifting frame 16. An induction piece one 17 is arranged on the slider one 8 for sensing the position of the lifting mechanism to ensure accurate positioning of the lifting position, so as to accurately position to the rear side of the paper tube without touching or contaminating the product. The wire drawing mechanism adopts a steel pipe structure with high rigidity. After being calibrated and positioned by a wire car in the early stage, compared with the special chain mechanism of the winding chain shaft, it has a high sustainable working ability and will not have the situation of mechanical stress deformation.

[0030] The working principle includes the following steps:

[0031] S1. Detect the material shortage state of the product through positioning photoelectric detection. After the material shortage signal is triggered, call the AGV car to deliver materials through the upper computer. After receiving the signal, the AGV car starts and enters the full car station of the wire dropping machine to receive wire, and then sends the wire car into the internal frame of the wire feeding mechanism according to the system-specified assigned station.

[0032] S2. The upper computer sends the spool number information generated by the database system to the PLC. The PLC sets the program to judge conditions such as the wire taking signal and the photoelectric detection of the wire car to determine the running path of the wire taking robot.

[0033] S3. The servo motor 22 in the wire drawing mechanism receives the PLC action instruction signal and starts to work. It moves through the lead screw two 11 fixed above the wire drawing mechanism and cooperates with the slider two 19 to run to the wire drawing original position point.

[0034] S4. The lifting mechanism starts to act. After the motor receives the PLC action instruction signal, it starts to work, drives the lead screw one 5 to rotate, and then drives the lifting mechanism mounting frame 10 to lift to the wire pushing position on the first and second floors. The wire taking robot receives the action signal and runs to the wire taking position. Then the wire drawing mechanism performs equidistant wire drawing. After advancing 20 wire taking positions equidistantly according to the PLC wire drawing servo set parameters, the wire drawing servo receives the signal to return to the original position, and the wire drawing process on the first and second floors ends.

[0035] S5. After the lifting mechanism receives the signal that the wire drawing servo has reached the original position sent by the PLC, it lifts to the positions of the third and fourth wire carts. When the in-place signal is triggered, the wire drawing mechanism starts to act, and also starts equidistant wire pushing according to the wire drawing process logic on the first and second floors. When all products are grabbed and placed by the wire taking robot according to the wire taking program and return to the original position points, the whole set of processes ends.

[0036] During the actual implementation of the wire loading frame, the center of the wire drawing mechanism used for wire drawing must be installed strictly at the center point of the whole wire loading frame, and the wire loading frame must be measured with a spirit level or a level meter before being fixedly installed to maintain the overall levelness of the frame, and the error range cannot be greater than 1 mm. An optoelectronic detection induction piece is added to the fork mounting frame 21 of the wire drawing mechanism, and an optoelectronic sensor for wire drawing origin detection and a limit detection optoelectronic sensor are added inside the wire drawing mechanism to ensure the accuracy of the wire drawing mechanism's return to the original position, and a protection program is written in the PLC according to the origin return method.

[0037] During the actual implementation of the synchronous belt drive mechanism, the installation positions of the lead screw, servo motor, including the lifting mounting bracket, etc. mentioned in the lifting mechanism must ensure a high installation accuracy, and the error range does not exceed 1 mm to ensure the smoothness of the synchronous belt drive mechanism's action. It is used to adjust the stability on both sides of the lifting mechanism to keep it in an absolutely synchronous state and stably perform the lifting and lowering actions. An optoelectronic sensor for lifting origin detection and a limit detection optoelectronic sensor are added inside the lifting mechanism frame, and an optoelectronic induction piece is added outside the lifting mounting frame. The PLC program origin search program is set, and a safety protection program is added to prevent the synchronous belt mechanism from being damaged due to the lifting mechanism exceeding the limit caused by external interference factors.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Without departing from the spirit and scope of the present invention, the present invention has various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A novel automatic wire feeding mechanism, comprising a support frame (25), a lifting frame (16), a lifting mechanism mounting frame (10), a wire pushing vehicle (24) and a wire drawing mechanism, characterized in that: The lifting frame (16) is arranged on the supporting frame (25) in an inclined manner. The three sides of the supporting frame (25) are provided with cross beams (26). The side without the cross beam (26) is an inlet. The wire pushing vehicle (24) enters the supporting frame (25) through the inlet. The front and rear sides of the lifting frame (16) are respectively provided with lead screws (5). The lifting mechanism mounting frame (10) is arranged between the lead screws (5). The wire pulling mechanism comprises a fork mounting frame (21), a fork (23), a servo motor (22) and a second lead screw (11). The second lead screw (11) and the servo motor (22) are mounted on the lifting mechanism mounting frame (10). The fork mounting frame (21) is connected to the second lead screw (11) through a lead screw nut (20). The upper end of the fork (23) is fixed on the fork mounting frame (21).

2. A novel automatic threading mechanism according to claim 1, characterized in that: A wire loom limiting rod (1) is fixed on the front and rear corresponding cross beams (26), and one end of the wire loom limiting rod (1) corresponding to the inlet is arranged in a trumpet opening shape, and a wire loom positioning block (2) is arranged on the ground corresponding to the support frame (25).

3. A novel automatic threading mechanism according to claim 1, characterized in that: Two guide rails (12) are arranged on the two inner side surfaces of the lifting mechanism mounting frame (10), and the two guide rails (12) are connected to the fork mounting frame (21) through the two sliders (19). Photoelectric switches (13) are arranged on the left and right sides of the upper surface of the lifting mechanism mounting frame (10), and the two sliders (19) are provided with two induction sheets (18). Limiting blocks (9) are respectively arranged on the two sides of the lower surface of the lifting mechanism mounting frame (10).

4. A novel automatic threading mechanism according to claim 1, characterized in that: The lifting frame (16) and the supporting frame (25) are connected via a hinge assembly, wherein the hinge assembly comprises a fixed hinge seat one (3) and a fixed hinge seat two (4), wherein the fixed hinge seat one (3) is mounted on the supporting frame (25) via screws, and the fixed hinge seat two (4) is fixed on the lifting frame (16), wherein the fixed hinge seat one (3) and the fixed hinge seat two (4) are connected via a pin shaft, and the heights of the fixed hinge seats one (3) on both sides of the supporting frame (25) are inconsistent.

5. A novel automatic threading mechanism according to claim 1, characterized in that: The lead screws (5) on the lifting frame (16) are connected via a synchronous belt transmission mechanism, the synchronous belt transmission mechanism comprises a synchronous belt (14) and a synchronous wheel (15), the synchronous wheels (15) are respectively mounted on the lead screws (5), and the synchronous wheels (15) are connected via a synchronous belt (14).

6. A novel automatic threading mechanism according to claim 5, characterized in that: Guide rails (6) are respectively arranged on the two side surfaces of the lead screw (5), a slider (8) is arranged on the guide rail (6), a lifting mounting frame (7) is arranged on the slider (8), the lifting mounting frame (7) is fixedly connected to the lifting mechanism mounting frame (10), photoelectric switches (13) are respectively arranged on the upper and lower parts of the lifting frame (16), and a sensor sheet (17) is arranged on the slider (8).

Images