A torsion spring feeding device of a hard hat buckle assembly machine

Abstract

The application discloses a torsional spring feeding device of a hard hat belt buckle assembling machine and relates to hard hat belt buckle assembling. The technical scheme comprises guide rods, the guide rods are provided in multiple numbers, the multiple guide rods are uniformly distributed along the width direction of a material guiding pipe body, the first ends of the multiple guide rods correspond to the axis of a torsional spring falling into the material guiding pipe body, an annular track is provided with multiple bearing units for bearing the torsional spring in a guide groove of the annular track, the multiple bearing units are connected to each other to form a chain structure, and a driving mechanism is used for driving the bearing units to make cyclic movement along the guide groove and enabling any bearing unit to move to the clamping point of a mechanical hand in a reciprocating manner. The application adjusts the posture of the torsional spring during the discharging process and adjusts the posture of the torsional spring during the falling process so that the posture of the torsional spring can be directly grabbed by the mechanical hand, the process of adjusting the posture again is reduced, the processing procedure is simplified, the production efficiency is improved, and the automation degree is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of helmet buckle assembly, and more particularly to a torsion spring feeding device for a helmet buckle assembly machine. Background Technology

[0002] Chinese patent CN205409833U discloses a safety helmet that secures the helmet shell to the head via two fixing straps. The ends of the two fixing straps are connected by a helmet buckle. The helmet buckle includes a buckle 1 and a buckle seat 2, each connected to an end of one of the fixing straps. To wear the helmet, simply insert the buckle 1 into the buckle seat 2 to establish the connection. During the buckling process, a torsion spring is used to reset the buckle seat.

[0003] Currently, the installation of torsion springs on safety helmets typically involves a robotic arm gripping the helmet and placing it into a posture adjustment mechanism. After adjusting to a suitable posture, the robotic arm then grips and installs it. Throughout the installation process, the robotic arm has a long standby time, and involves many gripping and cycling operations, resulting in low efficiency in industrial production and causing significant economic losses. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a torsion spring feeding device for a helmet buckle assembly machine that can cyclically adjust the torsion spring to a specific posture to facilitate the quick gripping of the helmet buckle by a robotic arm.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A torsion spring feeding device for a safety helmet buckle assembly machine, used to adjust the torsion spring posture to a specific position for a robot arm to grip and install, includes: a guide tube body and a material box fixed at the head end of the guide tube body, wherein the material box adjusts the torsion spring to a horizontal state and enters the guide tube body;

[0007] The guide rods are provided in multiple ways, and the multiple guide rods are evenly distributed along the width direction of the guide tube. The first end of the multiple guide rods corresponds to the axis of the torsion spring falling into the guide tube.

[0008] A vibrating feeder, wherein the vibrating feeder generates vibration that acts on a horizontal torsion spring, causing it to fall along a guide rod and become vertical on the axis after falling;

[0009] The electric gripper is provided in multiple sets. Each set of electric grippers grips the corresponding guide rod and keeps it in a specific position within the guide tube.

[0010] A circular track is provided, the middle part of which is connected to the tail end of the guide tube, so that the torsion spring enters the guide groove of the circular track. The guide groove is provided with multiple bearing units for bearing the torsion spring, and the multiple bearing units are connected to each other to form a chain structure.

[0011] A drive mechanism is provided to drive the bearing unit to perform cyclical motion along the guide groove, so that any of the bearing units moves reciprocally to the gripping point of the robot arm.

[0012] Preferably, the middle section of the feed tube is inclined, with its inlet in a horizontal state and its outlet in a vertical state;

[0013] The overall shape of the guide rod is adapted to the material guide tube body.

[0014] Preferably, the guide rod comprises two shells that are interlocked and fixed to form a tubular structure;

[0015] The housing contains a miniature air pump and an energy storage device that supplies power to the miniature air pump.

[0016] The surface of the housing is provided with an ejection groove located in front of the gripping position of the electric gripper. The ejection groove is filled with an inflatable airbag. The micro air pump pumps air to each of the inflatable airbags through the pipeline system, causing the corresponding inflatable airbags to expand and then restrict the torsion spring at that position.

[0017] The spacing between the guide rods is equal to the spacing between the bearing units, and the ends of the guide rods are connected to several of the bearing units.

[0018] Preferably, the bearing unit includes a movable seat that is slidably installed in the guide groove, and a limiting rod that mates with the guide rod is provided on the upper surface of the movable seat;

[0019] The outer circumference of the movable base is symmetrically fixed with connecting protrusions, and each connecting protrusion is hinged with a connecting piece. Adjacent connecting pieces are connected by a rotating shaft.

[0020] The movable base is also provided with a snap-fit ​​slot for the drive mechanism to dock and move with the drive mechanism.

[0021] Preferably, the drive mechanism includes a mounting plate fixed at the corner of the annular track, a drive motor fixed at the bottom of the mounting plate, the output axis of the drive motor passing through the mounting plate and fixed with a drive disk, and multiple support rods extending outward from the drive disk into the corresponding snap-fit ​​grooves.

[0022] Preferably, a rotating through groove for the drive disc to rotate is provided on the inner side of the corner of the annular track.

[0023] Preferably, the guide groove has a guide groove that limits the torsion arm at the end of the torsion spring;

[0024] The horizontal section of the guide groove has a torsion spring mating position corresponding to the guide rod, and the torsion spring mating position does not have a guide groove to limit the torsion arm at the end of the torsion spring.

[0025] The guide groove is flush with the height of the torsion arm at the end of the torsion spring.

[0026] Preferably, the guide groove is provided with a gripping groove at the corner or horizontal position for the robot arm to grip the torsion spring helical segment.

[0027] Preferably, the material box is vertically disposed at the first end of the guide tube, and the material box has a cavity for storing torsion springs and a discharge channel through which the cavity passes horizontally.

[0028] The bottom of the material box is provided with a guide seat for the arrangement of torsion springs, and the guide seat has an arc groove that matches the helical segment of the torsion spring.

[0029] Preferably, the guide seat is configured such that the axis of the torsion spring is coaxial with the horizontal section at the beginning of the guide rod.

[0030] The beneficial effects of this invention are as follows:

[0031] This invention reduces the need for repeated posture adjustments during the torsion spring unloading process and adjusts the spring's posture during its descent to a position that allows a robotic arm to directly grasp and assemble it. This simplifies the processing steps and improves production efficiency.

[0032] By forming a chain structure similar to a bicycle chain, and a drive disc that drives the chain structure to move cyclically, the load-bearing unit can be repeatedly moved to the same position (such as the torsion spring docking position and the clamping point), realizing the cyclic assembly of the torsion spring and greatly improving the degree of automation. Attached Figure Description

[0033] Figure 1 A top view schematic diagram of one embodiment of the invention is provided;

[0034] Figure 2 for Figure 1 Cross-sectional view along the BB direction;

[0035] Figure 3 This is a top view of the circular track structure in this invention;

[0036] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0037] Figure 5 for Figure 3 Enlarged view of a section at point C;

[0038] Figure 6 This is a perspective view of the guide rod in this invention;

[0039] Figure 7 This is a schematic diagram of the torsion spring.

[0040] Figure 8 A schematic diagram of the structure where the torsion spring rests on the guide seat;

[0041] Figure 9 This is a schematic diagram of the structure of the bearing unit in this invention;

[0042] The diagram shows the following markings: 10 Material box; 11 Feeding channel; 12 Accommodating cavity; 13 Guide seat; 131 Arc groove; 20 Guide tube body; 21 Vibrating feeder; 30 Electric gripper; 40 Circular track; 41 Guide groove body; 42 Torsion spring docking position; 43 Rotary through groove; 50 Drive mechanism; 51 Drive motor; 52 Mounting plate; 53 Drive disc; 60 Bearing unit; 61 Moving seat; 62 Limiting rod; 63 Connecting piece; 64 Connecting protrusion; 65 Snap-fit ​​groove; 70 Guide rod; 71 Housing; 72 Pop-out groove; 73 Inflatable airbag; 74 Miniature air pump; 76 Energy storage device; 77 Piping system; 100 Torsion spring; 101 Spiral section; 102 Torsion arm. Detailed Implementation

[0043] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0044] Example

[0045] like Figure 1 As shown, this invention proposes a torsion spring feeding device for a safety helmet buckle assembly machine, used to adjust the torsion spring posture to a specific position for a robotic arm to grip and install it. It includes: a guide tube 20 and a material box 10 fixed to the head end of the guide tube 20. Figure 2 As shown, the material box 10 adjusts the torsion spring to a horizontal state and enters the guide tube 20;

[0046] The material box 10 is vertically arranged at the head end of the guide tube 20. The material box 10 has a cavity 12 for storing torsion springs and a discharge channel 11 through which the cavity 12 passes in a horizontal state. Since the diameter of the torsion spring 100 is different from its length, the width of the discharge channel 11 can be slightly larger than the diameter of the torsion spring 100, so that the torsion spring 100 cannot pass through the discharge channel 11 in a horizontal state, thereby realizing the adjustment of the falling state of the torsion spring 100.

[0047] The bottom of the material box 10 is provided with a guide seat 13 for the arrangement of torsion springs. The guide seat 13 has an arc-shaped groove 131 that matches the helical segment 102 of the torsion spring. Figure 8 As shown, the torsion spring 100 falls onto the guide seat 13, and the helical segment 102 of the torsion spring 100 falls into the arc groove 131, so that it is arranged in an orderly manner according to a predetermined shape.

[0048] The middle section of the feed tube 20 is inclined, with its inlet in a horizontal position and its outlet in a vertical position. The horizontal position facilitates docking with the material box 10.

[0049] Multiple guide rods 70 are provided and are evenly distributed along the width of the guide tube 20. The first end of each guide rod 70 corresponds to the axis of the torsion spring falling into the guide tube 20. The overall shape of the guide rod 70 is adapted to the guide tube 20. The guide rod 70 also has a horizontal section, an inclined section and a vertical section. The horizontal section is used to connect with the torsion spring in the arc groove 131. The inclined section allows the torsion spring 100 to fall freely. The vertical section allows the torsion spring 100 to change from horizontal to vertical during the fall. The guide seat 13 makes the axis of the torsion spring coaxial with the first horizontal section of the guide rod 70.

[0050] The vibrating feeder 21 generates vibrations that act on a horizontal torsion spring, causing it to fall along the guide rod 70 and become vertical after falling.

[0051] During the vibration process of the vibrating feeder 21, not only can the torsion spring 100 move along the arc groove 131 until the torsion spring 100 is sleeved on the guide rod 70, but it can also act on the accommodating cavity 12 of the material box 10, so that the torsion spring 100 in the lateral state can be continuously switched to the state that can pass through the feeding channel 11 by vibration, thus accelerating the descent of the torsion spring 100.

[0052] Electric grippers 30, multiple sets of electric grippers 30 are provided, multiple sets of electric grippers 30 grip the corresponding guide rods 70, so that they are kept in a specific position within the guide tube body 20;

[0053] Specifically, during the descent of the torsion spring 100 along the guide rod 70, the electric gripper 30 closest to the material box 10 first stops gripping the guide rod 70, allowing the torsion spring to continue falling. Then, the middle electric gripper 30 stops gripping the guide rod 70, while the electric gripper 30 closest to the material box 10 resumes gripping the guide rod 70 to ensure the stability of the guide rod 70. Similarly, when the torsion spring is about to detach from the guide rod 70, the lowest electric gripper 30 stops gripping the guide rod 70, allowing the torsion spring 100 to fall freely; thus, the number of torsion springs 100 is controllable.

[0054] The annular track 40 is connected to the tail end of the guide tube 20 in the middle, so that the torsion spring enters the guide groove 41 of the annular track 40. Multiple bearing units 60 for bearing the torsion spring are provided in the guide groove 41, and the multiple bearing units 60 are connected to each other to form a chain structure.

[0055] The drive mechanism 50 is used to drive the bearing unit 60 to make cyclical movement along the guide groove 41, so that any bearing unit 60 moves reciprocally to the gripping point of the robot.

[0056] Combination Figure 6 As shown, the guide rod 70 includes two shells 71 that are interlocked and fixed to form a tubular structure;

[0057] The housing 71 contains a miniature air pump 74 and an energy storage device 76 that supplies power to the miniature air pump 74.

[0058] The surface of the housing 71 is provided with an ejection groove 72 located in front of the gripping position of the electric gripper 30. The ejection groove 72 is filled with an inflatable airbag 73. The micro air pump 74 pumps air to each inflatable airbag 73 through the pipeline system 77, causing the corresponding inflatable airbag 73 to expand and then restrict the torsion spring at that position.

[0059] The spacing between the guide rods 70 is equal to the spacing between the bearing units 60, and the ends of the guide rods 70 are connected to several of the bearing units 60.

[0060] Based on the above description of the electric gripper 30 gripping the guide rod 70, in order to enable the electric gripper 30 to grip the guide rod 70 better, and at the same time avoid gripping the torsion spring 100 on the guide rod 70 during the gripping process, the micro air pump 74 is used to inflate the airbag 73. After the airbag 73 expands, it tightens and fixes the torsion spring, so that the torsion spring 100 before gripping or waiting to be released is temporarily kept in its current position.

[0061] It should be noted that a charging interface can be provided on the housing 71, and the charging connector can be provided on the gripper of the electric gripper 30, so that the electric gripper 30 charges the energy storage device 76 during the clamping process.

[0062] Please combine Figure 3 , Figure 5 as well as Figure 9 As shown, the bearing unit 60 includes a movable seat 61 that is slidably installed in the guide groove 41, and a limiting rod 62 that is connected to the guide rod 70 is provided on the upper surface of the movable seat 61.

[0063] The outer circumference of the movable seat 61 is symmetrically fixed with connecting protrusions 64, and each connecting protrusion 64 is hinged with a connecting piece 63. Adjacent connecting pieces 63 are connected by a rotating shaft. The chain structure formed between the bearing units 60 is like a bicycle chain, which can be driven to the same position repeatedly to make reciprocating motion.

[0064] The movable base 61 is also provided with a snap-fit ​​slot 65 for the drive mechanism 50 to dock with and move with the drive mechanism 50.

[0065] Please combine Figure 4 As shown, the drive mechanism 50 includes a mounting plate 52 fixed at the corner of the circular track 40. A drive motor 51 is fixed at the bottom of the mounting plate 52. The output axis of the drive motor 51 passes through the mounting plate 52 and is fixed with a drive disk 53. The drive disk 53 extends outward with multiple support rods extending into the corresponding snap-fit ​​grooves 65.

[0066] The drive motor 51 drives the drive disk 53 to rotate. The support rod of the drive disk 53 reciprocates into the snap-fit ​​groove 65, like the chain of a bicycle. As the drive disk 53 rotates, the moving seat 61 moves a certain distance until the torsion spring 100 moves to the gripping point. Then it is gripped by the robot and used directly for assembly without the need for the intervention of the attitude adjustment mechanism.

[0067] A rotating through groove 43 for the drive disc 53 to rotate is provided on the inner side of the corner of the circular track 40.

[0068] Combination Figure 7 As shown, the guide groove 41 has a guide groove that limits the torsion arm 101 at the end of the torsion spring.

[0069] The horizontal section of the guide groove 41 has a torsion spring mating position 42 corresponding to the guide rod 70, and the torsion spring mating position 42 does not have a guide groove for limiting the torsion arm at the end of the torsion spring.

[0070] The guide groove is flush with the height of the torsion arm at the end of the torsion spring.

[0071] The torsion arm 101 at the end of the torsion spring is straight, and the height of the guide groove is the same as that of the torsion arm 101 at the end of the torsion spring. During the movement of the torsion spring 100 carried by the bearing unit 60, the position of the torsion spring is avoided because the torsion arm 101 at the end of the torsion spring can enter the guide groove.

[0072] The guide groove 41 is provided with a gripping slot at the corner or horizontal position for the robot to grip the torsion spring helical segment (at the same position as the aforementioned gripping point). Figure 3When the torsion spring 100 rotates to the above-mentioned M or N position, the position of the torsion spring 100 has been adjusted, and the robot can directly grip and assemble it. After gripping, as the drive mechanism 50 drives the carrier unit 60 to move, the carrier unit 60 without the torsion spring gradually moves to the torsion spring docking position 42, and the electric gripper 30 controls the torsion spring to fall back onto the carrier unit 60 to complete the feeding cycle.

[0073] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0074] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0075] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A torsion spring feeding device of a hard hat strap buckle assembly machine, for adjusting the posture of a torsion spring to a specific posture for being gripped and installed by a robot hand, characterized in that, The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. 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2. The torsion spring feeding device of a safety hat belt buckle assembly machine according to claim 1, wherein, The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding pipe, and the torsion spring is arranged in the material box, and the torsion spring is arranged in the material guiding pipe by the material box. The utility model provides a kind of material guiding pipe and material box for the torsion spring, the material box is arranged in the first end of the material guiding 3. The torsion spring feeding device of a safety hat belt buckle assembly machine according to claim 1, wherein, The driving mechanism comprises a mounting plate fixed at the corner of the annular track, a driving motor fixed at the bottom of the mounting plate, an output shaft of the driving motor penetrating the mounting plate upward and a driving disc fixed on the output shaft, the driving disc extending outwardly and having a plurality of supporting rods extending into the corresponding clamping grooves.

4. The torsion spring feeding device of a safety hat belt buckle assembly machine according to claim 1, wherein, The corner of the annular track is provided with a rotating channel for the rotation of the driving disc.

5. The torsion spring feed device of a safety hat strap buckle assembly machine according to claim 1, wherein, The corner or horizontal part of the guide groove body is provided with a clamping groove for the clamping of the spiral segment of the torsion spring by the mechanical hand.

6. A torsion spring feeding device for a safety hat strap buckle assembly machine according to claim 1, wherein The guide seat is coaxial with the horizontal segment of the leading end of the guide rod member.

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