A fully automatic screw tightening device and tightening method

Abstract

The present invention belongs to the technical field of screwing machines, and particularly relates to a fully automatic screw tightening device and a tightening method. The fully automatic screw tightening device includes: a processing platform, an identification module, a moving mechanism, a fixing frame, a pressing mechanism, a tightening mechanism, a feeding pipe group and a glue dispensing mechanism; by arranging the glue dispensing mechanism in the feeding pipe group, the present invention realizes smearing screw glue on the surface of the screw during the screw feeding process, and the pressing mechanism drives the tightening mechanism to move relative to the feeding pipe group to push the nut to scrape off the screw glue on the glue dispensing mechanism, which not only plays a role in keeping the surface of the glue dispensing mechanism clean, but also can smear the screw glue on the nut, ensuring the overall fastening, anti-corrosion and anti-rust effects of the screw. Moreover, the glue dispensing mechanism can hold the tightening mechanism when the tightening mechanism screws the screw, so that the tightening mechanism and the screw are concentric, overcoming the problems that the feeding pipe group is worn and the accuracy of the pressing mechanism is reduced, resulting in the inability to accurately assemble the screw and the workpiece to be assembled, and improving the assembly efficiency and safety.

Description

Technical Field

[0001] The present invention belongs to the technical field of screwdrivers, and particularly relates to a fully automatic screw tightening device and a tightening method. Background Art

[0002] After traditional automatic screwdrivers are loaded with screws, the screws slide down along the pipeline. At the same time, the tightening component moves along the linear guide rail inside the pipeline to align with the screws and drive them into the workpiece to be assembled. However, the friction between the screws and the pipeline will cause wear of the pipeline, and it is impossible to directionally guide the moving direction of the screws, resulting in deviation. At the same time, the long-term use of the linear guide rail will also reduce the accuracy, resulting in the inability to drive the screws into the workpiece to be assembled, and even damage the workpiece to be assembled.

[0003] At the same time, when assembling screws onto the workpiece to be assembled, screw glue needs to be applied to its surface. However, traditional automatic screwdrivers cannot apply screw glue to the surface of the screws during the feeding process, which will cause the screws to adhere to the pipeline during the sliding process along the pipeline. It is necessary to additionally set up a set of glue application equipment to cooperate with the automatic screwdriver. However, the additionally configured glue application equipment can only apply screw glue to the screw rod of the screw. When the automatic screwdriver drives the screw nut into the workpiece to be assembled, it is necessary to withdraw the glue application equipment in advance, resulting in the inability to apply screw glue to the screw nut, affecting the overall fastening, anti-corrosion, and rust-proof effects of the screw.

[0004] Therefore, there is an urgent need to develop a new fully automatic screw tightening device and a tightening method to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a fully automatic screw tightening device and a tightening method.

[0006] To solve the above technical problems, the present invention provides a fully automatic screw tightening device, which includes: a processing platform, an identification module, a moving mechanism, a fixing frame, a pressing mechanism, a tightening mechanism, a feeding pipe group, and a glue dispensing mechanism; wherein the identification module and the moving mechanism are located above the processing platform, and the identification module is electrically connected to the moving mechanism; the fixing frame is installed on the moving mechanism, the pressing mechanism is movably installed on the fixing frame, the tightening mechanism is installed on the pressing mechanism, and the feeding pipe group is fixedly installed on the fixing frame; the feeding pipe group is provided with a first inlet, a second inlet, and a first outlet, the tightening mechanism is located above the first inlet, and the glue dispensing mechanism is movably installed at the first outlet; when a workpiece to be assembled is placed on the processing platform, the identification module obtains the assembly points on the workpiece to be assembled, so that the moving mechanism drives the fixing frame to move above each assembly point in sequence according to a set path; when the first outlet is aligned with the assembly point, screws are put into the second inlet, so that the screws slide downward in the feeding pipe group towards the first outlet until the screws are stuck in the glue dispensing mechanism, the pressing mechanism pushes the tightening mechanism to press downward towards the first inlet, so that the tightening mechanism extends into the feeding pipe group and abuts against the screws; when the tightening mechanism drives the screws to rotate, the pressing mechanism pushes the tightening mechanism and the screws to expand the glue dispensing mechanism, so that the glue dispensing mechanism extrudes screw glue and coats it on the screws until the screws extend out of the first outlet and are driven into the assembly points on the workpiece to be assembled, and the glue dispensing mechanism rebounds to hold the tightening mechanism, so that the tightening mechanism and the screws remain concentric; and when the pressing mechanism drives the tightening mechanism to retract, the glue dispensing mechanism scrapes the screw glue on the tightening mechanism, so that the screw glue remains on the glue dispensing mechanism to limit the screws put into the feeding pipe group.

[0007] Specifically, the identification module includes: a controller and a camera; the camera, the moving mechanism, and the pressing mechanism are electrically connected to the controller, and the camera is installed above the processing platform; the camera collects the image information of the workpiece to be assembled on the processing platform, and the controller obtains the assembly points on the workpiece to be assembled from the corresponding image information, so that the controller controls the moving mechanism to drive the fixing frame to move above each assembly point in sequence according to a set path, and when the fixing frame moves above any assembly point, the controller controls the pressing mechanism to perform corresponding actions.

[0008] Specifically, the moving mechanism includes: an XY-axis sliding platform; the XY-axis sliding platform is located above the processing platform, and the fixing frame is installed on the XY-axis sliding platform; the XY-axis sliding platform drives the fixing frame to move above each assembly point in sequence according to a set path.

[0009] Specifically, the pressing mechanism includes: a vertical sliding track, a vertical slider, and a pressing driving member; the vertical sliding track is vertically installed on the fixing frame, the vertical slider is slidably installed on the vertical sliding track, and the tightening mechanism is installed on the vertical slider; the pressing driving member is installed on the fixing frame and is connected to the vertical slider; the pressing driving member drives the vertical slider to move on the vertical sliding track so as to drive the tightening mechanism to move relative to the feed pipe group.

[0010] Specifically, the tightening mechanism includes: a tightening gun and a bit; the tightening gun is installed on the pressing mechanism, and the bit is installed on the tightening gun; the bit is aligned with the first inlet; the pressing mechanism pushes the tightening gun and the bit downward toward the first inlet so that the bit extends into the feed pipe group and abuts against the screw; when the tightening gun drives the screw to rotate through the bit, the pressing mechanism pushes the bit and the screw to expand the glue discharging mechanism so that the glue discharging mechanism extrudes screw glue and coats it on the screw until the screw extends out of the first outlet and is driven into the assembly point on the workpiece to be assembled, and the glue discharging mechanism rebounds to hold the bit so that the bit and the screw remain concentric; and when the pressing mechanism drives the tightening gun and the bit to retract, the glue discharging mechanism scrapes the screw glue on the bit.

[0011] Specifically, the feed pipe group includes: a first straight pipe and a second straight pipe; one end of the first straight pipe is provided with a first inlet, and the other end of the first straight pipe is provided with a first outlet; one end of the second straight pipe is provided with a second inlet, and the other end of the second straight pipe is communicated with the first straight pipe; the second straight pipe and the first straight pipe are arranged at an acute angle.

[0012] Specifically, the glue discharging mechanism includes: at least two glue discharging components and at least two elastic members; each of the glue discharging components is movably installed in the feed pipe group through a corresponding elastic member and is located at the first outlet; the glue discharging components surround to form a discharge channel therebetween; the screw slides downward in the feed pipe group toward the first outlet until the screw rod of the screw extends into the discharge channel and the nut of the screw is abutted by each glue discharging component, and the pressing mechanism pushes the tightening mechanism downward toward the first inlet so that the tightening mechanism extends into the feed pipe group and abuts against the nut of the screw; when the tightening mechanism drives the screw to rotate, the pressing mechanism pushes the tightening mechanism and the nut to drive each glue discharging component to squeeze the corresponding elastic member and expand toward the inner wall of the feed pipe group so that each glue discharging component extrudes screw glue and coats it on the screw rod and the nut, and the nut scrapes the screw glue attached to each glue discharging component until the screw extends out of the first outlet and is driven into the assembly point on the workpiece to be assembled, and each elastic member drives the corresponding glue discharging component to rebound to hold the tightening mechanism.

[0013] Specifically, the glue discharging mechanism further includes: at least two guide members; each of the glue discharging components is movably connected to the feeding pipe group through the corresponding guide member.

[0014] Specifically, the glue outlet assembly includes: a fixed seat and a flexible sleeve; the fixed seat is movably installed in the feed pipe group through a corresponding elastic member and is located at the first outlet, the flexible sleeve is installed on the top of the fixed seat, the fixed seat and the flexible sleeve are respectively provided with a first glue storage cavity and a second glue storage cavity, and the first glue storage cavity is connected with the second glue storage cavity; the fixed seat is provided with a plurality of glue outlet holes connected with the first glue storage cavity; when the nut is abutted by the flexible sleeve and the tightening mechanism extends into the feed pipe group and abuts against the nut, the pressing mechanism pushes the nut to squeeze the flexible sleeve to The screw glue is extruded from each of the glue outlet holes and coated onto the screw and the nut until the nut pushes the fixing seat and the elastic member to expand toward the inner wall of the feeding tube group, and the nut scrapes off the screw glue attached to the fixing seat until the nut extends out of the first outlet; when the elastic member drives the fixing seat to rebound, the fixing seat and the flexible sleeve hold the tightening mechanism; when the pressing mechanism drives the tightening mechanism to retract, the fixing seat scrapes off the screw glue on the tightening mechanism, so that the screw glue remaining on the flexible sleeve limits the screws dropped into the feeding tube group.

[0015] Specifically, a plurality of glue injection holes connected to the first glue storage cavity are opened at the bottom of the fixing seat, and each of the glue injection holes is connected to a glue injection mechanism, so that the glue injection mechanism can inject screw glue into the first glue storage cavity and the second glue storage cavity through each glue injection hole.

[0016] Specifically, the glue injection mechanism includes: a glue injection bin, a glue injection pump and a plurality of glue injection tubes; the glue injection bin is connected to the corresponding glue injection holes through the glue injection tubes, so that the glue injection pump pumps the screw glue in the glue injection bin into the first glue storage cavity and the second glue storage cavity through the glue injection tubes.

[0017] On the other hand, the present invention provides a tightening method using the above-mentioned fully automatic screw tightening device, which includes: arranging an identification module and a moving mechanism above the processing platform, and electrically connecting the identification module to the moving mechanism; installing a fixing frame on the moving mechanism, a pressing mechanism is movably installed on the fixing frame, a tightening mechanism is installed on the pressing mechanism, and a feeding pipe group is fixedly installed on the fixing frame; a first inlet, a second inlet and a first outlet are formed on the feeding pipe group, the tightening mechanism is arranged above the first inlet, and a glue dispensing mechanism is movably installed at the first outlet; when a workpiece to be assembled is placed on the processing platform, the identification module obtains the points to be assembled on the workpiece to be assembled, so that the moving mechanism drives the fixing frame to move above each point to be assembled in sequence according to a set path; when the first outlet is aligned with the point to be assembled, screws are put into the second inlet, so that the screws slide towards the first outlet in the feeding pipe group until the screws are stuck in the glue dispensing mechanism, and the pressing mechanism pushes the tightening mechanism to press down towards the first inlet, so that the tightening mechanism extends into the feeding pipe group and abuts against the screws; when the tightening mechanism drives the screws to rotate, the pressing mechanism pushes the tightening mechanism and the screws to expand the glue dispensing mechanism, so that the glue dispensing mechanism extrudes screw glue and coats it on the screws until the screws extend out of the first outlet and are driven into the points to be assembled on the workpiece to be assembled, and the glue dispensing mechanism rebounds to hold the tightening mechanism, so that the tightening mechanism and the screws remain concentric; and when the pressing mechanism drives the tightening mechanism to retract, the glue dispensing mechanism scrapes the screw glue on the tightening mechanism, so that the screw glue remains on the glue dispensing mechanism to limit the screws put into the feeding pipe group.

[0018] The beneficial effect of the present invention is that by arranging a glue dispensing mechanism in the feeding pipe group, the present invention can realize smearing screw glue on the surface of the screws during the screw feeding process, and at the same time, the pressing mechanism drives the tightening mechanism to move relative to the feeding pipe group to push the nut to scrape the screw glue on the glue dispensing mechanism, which not only plays a role in keeping the surface of the glue dispensing mechanism clean, but also can smear the screw glue on the nut, ensuring the overall fastening, anti-corrosion and rust-proof effects of the screws. And the glue dispensing mechanism can hold the tightening mechanism when the tightening mechanism screws the screws, so that the tightening mechanism and the screws remain concentric, overcoming the problems that the feeding pipe group is worn and the accuracy of the pressing mechanism is reduced, resulting in the inability to accurately assemble the screws and the workpiece to be assembled, and improving the assembly efficiency and safety.

[0019] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention.

[0020] To make the above objects, features and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is the structural diagram of the fully automatic screw tightening device of the present invention;

[0023] Figure 2 is the structural diagram of the tightening mechanism of the present invention;

[0024] Figure 3 is the structural diagram of the feeding pipe group of the present invention;

[0025] Figure 4 is the structural diagram of the glue discharging mechanism of the present invention;

[0026] Figure 5 is the structural diagram of the glue discharging mechanism of the present invention in the initial state;

[0027] Figure 6 is the structural diagram of the glue discharging mechanism of the present invention in the expanded state;

[0028] Figure 7 is the structural diagram of the glue discharging component of the present invention;

[0029] Figure 8 is the structural diagram of the fixed seat of the present invention.

[0030] In the figure:

[0031] 1. Processing platform;

[0032] 2. Identification module; 21. Camera;

[0033] 3. Moving mechanism; 31. XY-axis sliding platform;

[0034] 4. Fixed frame;

[0035] 5. Pressing mechanism; 51. Vertical sliding track; 52. Vertical slider; 53. Pressing driving part;

[0036] 6. Tightening mechanism; 61. Tightening gun; 62. Bit;

[0037] 7. Feeding pipe group; 71. First straight pipe; 711. First inlet; 712. First outlet; 72. Second straight pipe; 721. Second inlet;

[0038] 8. Glue discharging mechanism; 81. Glue discharging assembly; 811. Fixed seat; 8111. Glue discharging hole; 8112. Glue injection hole; 812. Flexible sleeve; 82. Elastic member; 83. Guide member. Detailed implementation manners

[0039] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0040] Embodiment 1. In this embodiment, as Figures 1 to 8 shown, this embodiment provides a fully automatic screw tightening device, which includes: a processing platform 1, an identification module 2, a moving mechanism 3, a fixing frame 4, a pressing mechanism 5, a tightening mechanism 6, a feeding pipe group 7 and a glue discharging mechanism 8; wherein the identification module 2 and the moving mechanism 3 are located above the processing platform 1, and the identification module 2 is electrically connected to the moving mechanism 3; the fixing frame 4 is installed on the moving mechanism 3, the pressing mechanism 5 is movably installed on the fixing frame 4, the tightening mechanism 6 is installed on the pressing mechanism 5, and the feeding pipe group 7 is fixedly installed on the fixing frame 4; the feeding pipe group 7 is provided with a first inlet 711, a second inlet 721 and a first outlet 712, the tightening mechanism 6 is located above the first inlet 711, and the glue discharging mechanism 8 is movably installed at the first outlet 712; when a workpiece to be assembled is placed on the processing platform 1, the identification module 2 obtains the points to be assembled on the workpiece to be assembled, so that the moving mechanism 3 drives the fixing frame 4 to move above each point to be assembled in a set path in sequence; when the first outlet 712 is aligned with the point to be assembled, screws are placed in the second inlet 721, so that the screws slide downward in the feeding pipe group 7 towards the first outlet 712 until the screws are stuck in the glue discharging mechanism 8, the pressing mechanism 5 pushes the tightening mechanism 6 to press downward towards the first inlet 711, so that the tightening mechanism 6 extends into the feeding pipe group 7 and abuts against the screws; when the tightening mechanism 6 drives the screws to rotate, the pressing mechanism 5 pushes the tightening mechanism 6 and the screws to expand the glue discharging mechanism 8, so that the glue discharging mechanism 8 extrudes screw glue and coats it on the screws until the screws extend out of the first outlet 712 and are driven into the points to be assembled on the workpiece to be assembled, and the glue discharging mechanism 8 rebounds to hold the tightening mechanism 6, so that the tightening mechanism 6 and the screws remain concentric; and when the pressing mechanism 5 drives the tightening mechanism 6 to retract, the glue discharging mechanism 8 scrapes the screw glue on the tightening mechanism 6, so that the screw glue remains on the glue discharging mechanism 8 to limit the screws placed in the feeding pipe group 7.

[0041] In this embodiment, by arranging a glue dispensing mechanism 8 in the feeding pipe group 7, it is possible to apply screw glue on the surface of the screw during the screw feeding process. At the same time, the pressing mechanism 5 drives the screwing mechanism 6 to move relative to the feeding pipe group 7 to push the nut to scrape off the screw glue on the glue dispensing mechanism 8. This not only keeps the surface of the glue dispensing mechanism 8 clean, but also can apply the screw glue on the nut, ensuring the overall fastening, anti-corrosion, and rust-proof effects of the screw. Moreover, the glue dispensing mechanism 8 can hold the screwing mechanism 6 when the screwing mechanism 6 screws the screw, making the screwing mechanism 6 concentric with the screw, overcoming the problems that the feeding pipe group 7 is worn and the accuracy of the pressing mechanism 5 is reduced, resulting in the inability to accurately assemble the screw and the workpiece to be assembled, and improving the assembly efficiency and safety.

[0042] In this embodiment, the identification module 2 includes: a controller and a camera 21; the camera 21, the moving mechanism 3, and the pressing mechanism 5 are electrically connected to the controller, and the camera 21 is installed above the processing platform 1; the camera 21 collects the image information of the workpiece to be assembled on the processing platform 1, and the controller obtains the assembly points to be assembled on the workpiece to be assembled from the corresponding image information, so that the controller controls the moving mechanism 3 to drive the fixing frame 4 to move above each assembly point in sequence according to a set path. And when the fixing frame 4 moves above any assembly point, the controller controls the pressing mechanism 5 to perform corresponding actions.

[0043] Specifically, the function of the camera 21 is to collect the image information of the workpiece to be assembled placed on the processing platform 1. Then, the controller can identify the positions of the assembly points to be assembled on the workpiece to be assembled from the image information, and then realize the subsequent automatic assembly of the screw at the corresponding assembly points.

[0044] In this embodiment, the moving mechanism 3 includes: an XY-axis sliding platform 31; the XY-axis sliding platform 31 is located above the processing platform 1, and the fixing frame 4 is installed on the XY-axis sliding platform 31; the XY-axis sliding platform 31 drives the fixing frame 4 to move above each assembly point in sequence according to a set path.

[0045] Specifically, the XY-axis sliding platform 31 can move freely on the horizontal plane, and then drive the fixing frame 4 to move above the assembly point.

[0046] In this embodiment, the pressing-down mechanism 5 includes a vertical sliding rail 51, a vertical slider 52, and a pressing-down driving member 53. The vertical sliding rail 51 is vertically installed on the fixing frame 4. The vertical slider 52 is slidably installed on the vertical sliding rail 51. The tightening mechanism 6 is installed on the vertical slider 52. The pressing-down driving member 53 is installed on the fixing frame 4 and is connected to the vertical slider 52. The pressing-down driving member 53 drives the vertical slider 52 to move on the vertical sliding rail 51, so as to drive the tightening mechanism 6 to move relative to the feed pipe group 7.

[0047] Specifically, the vertical sliding rail 51 plays a guiding role. The pressing-down driving member 53 pushes the vertical slider 52 to move on the vertical sliding rail 51, thereby enabling the tightening mechanism 6 to move relative to the feed pipe group 7.

[0048] In this embodiment, the tightening mechanism 6 includes a tightening gun 61 and a bit 62. The tightening gun 61 is installed on the pressing-down mechanism 5. The bit 62 is installed on the tightening gun 61. The bit 62 is aligned with the first inlet 711. The pressing-down mechanism 5 pushes the tightening gun 61 and the bit 62 to press downward toward the first inlet 711, so that the bit 62 extends into the feed pipe group 7 and abuts against the screw. When the tightening gun 61 drives the screw to rotate through the bit 62, the pressing-down mechanism 5 pushes the bit 62 and the screw to expand the glue discharging mechanism 8, so that the glue discharging mechanism 8 extrudes screw glue and coats it on the screw until the screw extends out from the first outlet 712 and is driven into the assembly point on the workpiece to be assembled. Moreover, the glue discharging mechanism 8 rebounds to hold the bit 62, so that the bit 62 and the screw remain concentric. And when the pressing-down mechanism 5 drives the tightening gun 61 and the bit 62 to retract, the glue discharging mechanism 8 scrapes the screw glue on the bit 62.

[0049] Specifically, the screwing gun 61 is fixed on the vertical slider 52. During the process that the downward pressing driving member 53 pushes the vertical slider 52 to move on the vertical sliding track 51, the screwing gun 61 and the bit 62 are driven to move relative to the feed pipe group 7 at the same time. Meanwhile, the bit 62 is arranged opposite to the first inlet 711, so that the bit 62 can extend into the feed pipe group 7 and abut against the nut of the screw. The bit 62 rotates driven by the screwing gun 61, thereby driving the screw to rotate. And the downward pressing mechanism 5 pushes the bit 62 and the screw towards the assembly point to be assembled. Then, the nut can push open the glue dispensing mechanism 8, and the glue dispensing mechanism 8 extrudes screw glue onto the screw rod. At the same time, the nut scrapes off the screw glue on the glue dispensing mechanism 8 to realize glue coating on the nut. Until the bit 62 drives the screw into the assembly point to be assembled, at the moment when the nut disengages from the glue dispensing mechanism 8, the glue dispensing mechanism 8 rebounds to hold the bit 62, playing a role in stabilizing the bit 62, enabling the bit 62 and the screw to remain concentric, realizing accurately driving the screw into the assembly point to be assembled. And after driving the screw into the assembly point to be assembled, the downward pressing mechanism 5 drives the bit 62 to retract. Since the glue dispensing mechanism 8 wraps the bit 62, when the bit 62 moves relative to the glue dispensing mechanism 8, the glue dispensing mechanism 8 wipes off the screw glue on the bit 62, and the screw glue remaining on the glue dispensing mechanism 8 can buffer the next screw sliding down to the glue dispensing mechanism 8, and at the same time provide the friction force between the screw and the glue dispensing mechanism 8, avoiding deflection of the bit 62 when aligning with the screw and improving the stability when the bit 62 is docked with the screw.

[0050] In this embodiment, the feed pipe group 7 includes: a first straight pipe 71 and a second straight pipe 72; a first inlet 711 is opened at one end of the first straight pipe 71, and a first outlet 712 is opened at the other end of the first straight pipe 71; a second inlet 721 is opened at one end of the second straight pipe 72, and the other end of the second straight pipe 72 is communicated with the first straight pipe 71; the second straight pipe 72 and the first straight pipe 71 are arranged at an acute angle.

[0051] Specifically, the bit 62 enters from the first inlet 711 and moves along the first straight pipe 71 towards the first outlet 712.

[0052] Specifically, the screw enters from the second inlet 721, slides along the second straight pipe 72 into the first branch pipe and then moves towards the first outlet 712.

[0053] Specifically, the second straight pipe 72 and the first straight pipe 71 are arranged at an acute angle, that is, the screw can slide into the first straight pipe 71 by its own weight.

[0054] In this embodiment, the glue discharging mechanism 8 includes: at least two glue discharging components 81 and at least two elastic members 82; each of the glue discharging components 81 is movably installed in the feeding pipe group 7 through the corresponding elastic member 82 and is located at the first outlet 712; each of the glue discharging components 81 is surrounded by a circle to form a discharging channel between each of the glue discharging components 81; the screw slides in the feeding pipe group 7 toward the first outlet 712 until the screw rod of the screw extends into the discharging channel and the nut of the screw is resisted by each glue discharging component 81, and the pressing mechanism 5 pushes the tightening mechanism 6 to press down toward the first inlet 711, so that The tightening mechanism 6 extends into the feeding tube group 7 and abuts against the nut of the screw; when the tightening mechanism 6 drives the screw to rotate, the pressing mechanism 5 pushes the tightening mechanism 6 and the nut to drive each glue outlet component 81 to squeeze the corresponding elastic member 82 to expand toward the inner wall of the feeding tube group 7, so that each glue outlet component 81 extrude screw glue and coat it on the screw and the nut, and the nut scrapes off the screw glue attached to each glue outlet component 81 until the screw extends from the first outlet 712 and is driven into the assembly point on the workpiece to be assembled, and each elastic member 82 drives the corresponding glue outlet component 81 to rebound and hold the tightening mechanism 6.

[0055] Specifically, since the diameter of the nut is larger than the diameter of the screw, the screw can directly enter the discharge channel, while the nut is blocked by the glue discharge components 81. When the batch head 62 pushes the nut downward, since the glue discharge components 81 are respectively arranged in the first straight tube 71 through the corresponding elastic members 82, each glue discharge component 81 can be squeezed open by the nut, and the glue discharge component 81 can squeeze out screw glue during the squeezing process of the nut, and the screw glue can be smeared on the screw. At the same time, the nut contacts the glue discharge component 81, and the nut can scrape the screw glue on the glue discharge component 81 to achieve the smearing of the screw glue on the nut. After the nut goes out of the glue discharge component 81, the elastic member 82 pushes the glue discharge component 81 to rebound and secure the batch head 62, thereby stabilizing the batch head 62, ensuring that the batch head 62 is concentric with the screw, and achieving precise docking of the screw with the assembly point. At the same time, during the retraction of the batch head 62, the glue discharge component 81 erases the screw glue on the batch head 62.

[0056] In this embodiment, the glue discharging mechanism 8 further includes: at least two guide members 83 ; each of the glue discharging components 81 is movably connected to the feeding pipe group 7 via the corresponding guide member 83 .

[0057] Specifically, the function of the guide member 83 is to guide the glue outlet assembly 81 to expand or rebound.

[0058] In this embodiment, the glue outlet component 81 includes: a fixed seat 811 and a flexible sleeve 812; the fixed seat 811 is movably installed in the feeding pipe group 7 through the corresponding elastic member 82 and is located at the first outlet 712, and the flexible sleeve 812 is installed on the top of the fixed seat 811, and the fixed seat 811 and the flexible sleeve 812 are respectively provided with a first glue storage cavity and a second glue storage cavity, and the first glue storage cavity is connected with the second glue storage cavity; a plurality of glue outlet holes 8111 connected to the first glue storage cavity are provided on the fixed seat 811; when the nut is resisted by the flexible sleeve 812 and the tightening mechanism 6 extends into the feeding pipe group 7 and resists the nut, the pressing mechanism 5 pushes the nut to squeeze the flexible sleeve 812, so that the screw glue is extruded from each of the glue outlet holes 8111 and coated onto the screw and the nut, until the nut pushes the fixing seat 811 and the elastic member 82 to expand toward the inner wall of the feeding tube group 7, and the nut scrapes off the screw glue attached to the fixing seat 811 until the nut extends out from the first outlet 712; when the elastic member 82 drives the fixing seat 811 to rebound, the fixing seat 811 and the flexible sleeve 812 hold the tightening mechanism 6; when the pressing mechanism 5 drives the tightening mechanism 6 to retract, the fixing seat 811 scrapes off the screw glue on the tightening mechanism 6, so that the screw glue remaining on the flexible sleeve 812 limits the screws put into the feeding tube group 7.

[0059] Specifically, a one-way permeable membrane is provided on the glue outlet hole 8111 to ensure that when the flexible sleeve 812 is squeezed, the screw glue in the first glue storage cavity and the second glue storage cavity can be squeezed out through the glue outlet hole 8111.

[0060] Specifically, the fixing seat 811 is hard and the flexible sleeve 812 is flexible, thereby ensuring that when the flexible sleeve 812 is squeezed by the nut, the screw glue is squeezed out from the glue outlet hole 8111, and after the nut contacts the fixing seat 811, the nut can push the fixing seat 811 away.

[0061] Specifically, the top of the flexible sleeve 812 is horn-shaped, which can guide the nut into the discharge channel and can be adapted to screws of various specifications.

[0062] Specifically, the fixing seat 811 holds the bit 62 to stabilize the bit 62 .

[0063] In this embodiment, a plurality of glue injection holes 8112 connected to the first glue storage cavity are opened at the bottom of the fixing seat 811, and each of the glue injection holes 8112 is respectively connected to a glue injection mechanism, so that the glue injection mechanism can inject screw glue into the first glue storage cavity and the second glue storage cavity through each glue injection hole 8112.

[0064] Specifically, the glue injection mechanism plays a role in replenishing glue, and can ensure that the glue discharging mechanism 8 continues to work.

[0065] In this embodiment, the glue injection mechanism includes: a glue injection bin, a glue injection pump, and a plurality of glue injection tubes; the glue injection bin is connected to corresponding glue injection holes 8112 through each glue injection tube, so that the glue injection pump pumps the screw glue in the glue injection bin into the first glue storage cavity and the second glue storage cavity through each glue injection tube.

[0066] Embodiment 2. On the basis of Embodiment 1, this embodiment provides a tightening method using the fully automatic screw tightening device provided in Embodiment 1, which includes: arranging the identification module 2 and the moving mechanism 3 above the processing platform 1, and electrically connecting the identification module 2 and the moving mechanism 3; installing the fixing frame 4 on the moving mechanism 3, the pressing mechanism 5 is movably installed on the fixing frame 4, the tightening mechanism 6 is installed on the pressing mechanism 5, and the feeding pipe group 7 is fixedly installed on the fixing frame 4; a first inlet 711, a second inlet 721, and a first outlet 712 are provided on the feeding pipe group 7, the tightening mechanism 6 is arranged above the first inlet 711, and the glue discharging mechanism 8 is movably installed at the first outlet 712; when a workpiece to be assembled is placed on the processing platform 1, the identification module 2 obtains the points to be assembled on the workpiece to be assembled, so that the moving mechanism 3 drives the fixing frame 4 to move above each point to be assembled in sequence according to a set path; when the first outlet 712 is aligned with the point to be assembled, screws are placed in the second inlet 721, so that the screws slide toward the first outlet 712 in the feeding pipe group 7 until the screws are stuck in the glue discharging mechanism 8, and the pressing mechanism 5 pushes the tightening mechanism 6 downward toward the first inlet 711, so that the tightening mechanism 6 extends into the feeding pipe group 7 and abuts against the screws; when the tightening mechanism 6 drives the screws to rotate, the pressing mechanism 5 pushes the tightening mechanism 6 and the screws to expand the glue discharging mechanism 8, so that the glue discharging mechanism 8 extrudes screw glue and coats it on the screws until the screws extend out of the first outlet 712 and are driven into the points to be assembled on the workpiece to be assembled, and the glue discharging mechanism 8 rebounds to hold the tightening mechanism 6, so that the tightening mechanism 6 and the screws remain concentric; and when the pressing mechanism 5 drives the tightening mechanism 6 to retract, the glue discharging mechanism 8 scrapes the screw glue on the tightening mechanism 6, so that the screw glue remains on the glue discharging mechanism 8 to limit the screws placed in the feeding pipe group 7.

[0067] In summary, by arranging the glue discharging mechanism in the feeding pipe group, the present invention can realize smearing screw glue on the screw surface during the screw feeding process, and at the same time, the pressing mechanism drives the tightening mechanism to move relative to the feeding pipe group to push the nut to scrape the screw glue on the glue discharging mechanism, which not only keeps the surface of the glue discharging mechanism clean, but also can smear the screw glue on the nut, ensuring the overall tightening, anti-corrosion, and anti-rust effects of the screw. Moreover, the glue discharging mechanism can hold the tightening mechanism when the tightening mechanism screws the screw, so that the tightening mechanism and the screw remain concentric, overcoming the problems that the feeding pipe group is worn and the accuracy of the pressing mechanism is reduced, resulting in the inability to accurately assemble the screw and the workpiece to be assembled, and improving the assembly efficiency and safety.

[0068] All the components (components without specific structures) selected in this application are common standard components or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or through conventional experimental methods.

[0069] In the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0070] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0071] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling, direct coupling, or communication connection can be through some communication interfaces. The indirect coupling or communication connection of the devices or units can be in electrical, mechanical, or other forms.

[0072] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0073] In addition, in each embodiment of the present invention, the functional units can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0074] Taking the above-described ideal embodiments of the present invention as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An automatic screw tightening device, characterized in that, Including: A processing platform, an identification module, a moving mechanism, a fixing frame, a pressing mechanism, a screwing mechanism, a feed pipe group and a glue discharging mechanism; Wherein The identification module and the moving mechanism are located above the processing platform, and the identification module is electrically connected to the moving mechanism; The fixing frame is installed on the moving mechanism, the pressing mechanism is movably installed on the fixing frame, the screwing mechanism is installed on the pressing mechanism, and the feed pipe group is fixedly installed on the fixing frame; The feed pipe group is provided with a first inlet, a second inlet and a first outlet. The screwing mechanism is located above the first inlet, and the glue discharging mechanism is movably installed at the first outlet; When a workpiece to be assembled is placed on the processing platform, the identification module obtains the points to be assembled on the workpiece to be assembled, so that the moving mechanism drives the fixing frame to move above each point to be assembled in sequence according to a set path; When the first outlet is aligned with the point to be assembled, a screw is placed in the second inlet, so that the screw slides in the feed pipe group towards the first outlet until the screw is stuck in the glue discharging mechanism. The pressing mechanism pushes the screwing mechanism to press down towards the first inlet, so that the screwing mechanism extends into the feed pipe group and abuts against the screw; When the screwing mechanism drives the screw to rotate, the pressing mechanism pushes the screwing mechanism and the screw to expand the glue discharging mechanism, so that the glue discharging mechanism extrudes screw glue and coats it on the screw until the screw extends out of the first outlet and is driven into the point to be assembled on the workpiece to be assembled, and the glue discharging mechanism rebounds to hold the screwing mechanism, so that the screwing mechanism and the screw remain concentric; and When the pressing mechanism drives the screwing mechanism to retract, the glue discharging mechanism scrapes the screw glue on the screwing mechanism, so that the screw glue remains on the glue discharging mechanism to limit the screws placed in the feed pipe group; The glue discharging mechanism includes: at least two glue discharging components and at least two elastic members; Each of the glue discharging components is movably installed in the feed pipe group through a corresponding elastic member and is located at the first outlet; Each of the glue discharging components surrounds to form a discharging channel between the glue discharging components; The glue discharging component includes: a fixed seat and a flexible sleeve; The fixed seat is movably installed in the feed pipe group through a corresponding elastic member and is located at the first outlet. The flexible sleeve is installed on the top of the fixed seat. A first glue storage cavity and a second glue storage cavity are respectively formed in the fixed seat and the flexible sleeve, and the first glue storage cavity is communicated with the second glue storage cavity; The fixed seat is provided with a plurality of glue discharging holes communicating with the first glue storage cavity.

2. The full-automatic screw screwing device according to claim 1, characterized in that The pressing mechanism includes: a vertical sliding track, a vertical slider and a pressing driving member; The vertical sliding track is vertically installed on the fixing frame, the vertical slider is slidably installed on the vertical sliding track, and the screwing mechanism is installed on the vertical slider; The pressing driving member is installed on the fixing frame, and the pressing driving member is connected to the vertical slider; The pressing driving member drives the vertical slider to move on the vertical sliding track to drive the screwing mechanism to move relative to the feed pipe group.

3. The full-automatic screw screwing device according to claim 1, characterized in that The tightening mechanism comprises: a tightening gun and a screwdriver bit; The tightening gun is installed on the pressing mechanism, and the screwdriver bit is installed on the tightening gun; The screwdriver bit is aligned with the first inlet; The pressing mechanism pushes the tightening gun and the screwdriver bit downward toward the first inlet, so that the screwdriver bit extends into the feeding pipe assembly and abuts against the screw; When the tightening gun drives the screw to rotate through the screwdriver bit, the pressing mechanism pushes the screwdriver bit and the screw to expand the glue discharging mechanism, so that the glue discharging mechanism extrude screw glue to coat the screw until the screw extends from the first outlet and is driven into the assembly point on the workpiece to be assembled, and the glue discharging mechanism rebounds to hold the screwdriver bit, so that the screwdriver bit and the screw remain concentric; and When the pressing mechanism drives the tightening gun and the screwdriver bit to retract, the glue discharging mechanism scrapes off the screw glue on the screwdriver bit.

4. The fully automatic screw tightening equipment according to claim 1, characterized in that: The feeding pipe group comprises: a first straight pipe and a second straight pipe; A first inlet is formed at one end of the first straight tube, and a first outlet is formed at the other end of the first straight tube; A second inlet is formed at one end of the second straight pipe, and the other end of the second straight pipe is connected to the first straight pipe; The second straight tube is disposed at an acute angle with the first straight tube.

5. The fully automatic screw tightening equipment according to claim 1, characterized in that: The glue discharging mechanism further comprises: at least two guide members; Each of the glue discharging components is movably connected to the feeding pipe group through a corresponding guide member.

6. The fully automatic screw tightening equipment according to claim 1, characterized in that: When the nut is abutted by the flexible sleeve and the tightening mechanism extends into the feeding tube assembly and abuts against the nut, the pressing mechanism pushes the nut to squeeze the flexible sleeve, so that the screw glue is extruded from each of the glue outlet holes and coated on the screw rod and the nut, until the nut pushes away the fixing seat and the elastic member to expand toward the inner side wall of the feeding tube assembly, and the nut scrapes off the screw glue attached to the fixing seat until the nut extends out of the first outlet; When the elastic member drives the fixing seat to rebound, the fixing seat and the flexible sleeve hold the tightening mechanism; When the pressing mechanism drives the tightening mechanism to retract, the fixing seat scrapes off the screw glue on the tightening mechanism, so that the screw glue remains on the flexible sleeve to limit the screws put into the feeding pipe group.

7. The fully automatic screw tightening equipment according to claim 6, characterized in that: A plurality of glue injection holes connected to the first glue storage cavity are provided at the bottom of the fixing seat, and each of the glue injection holes is connected to a glue injection mechanism, so that the glue injection mechanism can inject screw glue into the first glue storage cavity and the second glue storage cavity through each of the glue injection holes.

8. The fully automatic screw tightening equipment according to claim 7, characterized in that: The glue injection mechanism comprises: a glue injection bin, a glue injection pump and a plurality of glue injection pipes; The glue injection bin is connected to the corresponding glue injection holes through each glue injection tube, so that the glue injection pump pumps the screw glue in the glue injection bin into the first glue storage cavity and the second glue storage cavity through each glue injection tube.

9. A screwing method using the fully automatic screw tightening device according to any one of claims 1-8, characterized in that, include: The identification module and the moving mechanism are arranged above the processing platform, and the identification module and the moving mechanism are electrically connected; Mount the fixing frame on the moving mechanism, movably mount the pressing mechanism on the fixing frame, mount the screwing mechanism on the pressing mechanism, and fixedly mount the feed pipe group on the fixing frame; Open a first inlet, a second inlet and a first outlet on the feed pipe group, arrange the screwing mechanism above the first inlet, and movably mount the glue dispensing mechanism at the first outlet; When a workpiece to be assembled is placed on the processing platform, the recognition module obtains the points to be assembled on the workpiece to be assembled, so that the moving mechanism drives the fixing frame to move above each point to be assembled in sequence along a set path; When the first outlet is aligned with the point to be assembled, put a screw into the second inlet, so that the screw slides toward the first outlet in the feed pipe group until the screw is stuck in the glue dispensing mechanism, and the pressing mechanism pushes the screwing mechanism to press downward toward the first inlet, so that the screwing mechanism extends into the feed pipe group and abuts against the screw; When the screwing mechanism drives the screw to rotate, the pressing mechanism pushes the screwing mechanism and the screw to expand the glue dispensing mechanism, so that the glue dispensing mechanism extrudes screw glue and coats it on the screw until the screw extends out of the first outlet and is driven into the point to be assembled on the workpiece to be assembled, and the glue dispensing mechanism rebounds to hold the screwing mechanism, so that the screwing mechanism and the screw remain concentric; and When the pressing mechanism drives the screwing mechanism to retract, the glue dispensing mechanism scrapes the screw glue on the screwing mechanism, so that the screw glue remains on the glue dispensing mechanism to limit the screws put into the feed pipe group.

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