Automatic assembly alignment equipment

Abstract

The present invention discloses an automatic assembly alignment device, including a conveying device, a dispensing device, a connecting device, a screwing device and a spraying device. The conveying device is used to convey the fasteners supported on the positioning fixture and the stylus fixed in the positioning fixture; the dispensing device is used to dispense thread glue on the outer threads of the pen core located at the barrel mouth of the pen barrel; the connecting device goes back and forth between the conveying device and the spraying device, and is used to transfer the fasteners on the positioning fixture to the spraying device, and cooperate with the spraying device to spray the catalyst on the inner wall of the fasteners, and is also used to sleeve the sprayed fasteners on the pen core after dispensing; the screwing device is used to screw the fasteners sleeved on the pen core, so that the fasteners are adjusted and bonded at the assembly position, and one end of the fasteners in the assembly position is screwed into the pen barrel, and the other end is located outside the pen barrel. This equipment can realize automated assembly line operation, with a simple structure, high assembly accuracy and high efficiency.

Description

Technical Field

[0001] The invention relates to an assembly device, in particular to an automatic assembly alignment device. Background Art

[0002] For ease of use, electronic products such as mobile phones, tablet computers, and electronic dictionaries often use styluses for control. Styluses are generally plugged into mobile phones and other electronic products and can be pulled out when in use. As these electronic products become smaller and thinner, the space left for the stylus is getting smaller and smaller, making the stylus more delicate, which increases the difficulty of manufacturing the stylus. A stylus generally includes a pen barrel and a refill inserted into the pen barrel. Since it has a certain length, in order to prevent the refill from shaking relative to the pen barrel, some styluses, after the refill is aligned and assembled in the pen barrel, also add fasteners between the two to strengthen the connection and positioning. However, it is not easy to align and assemble smaller fasteners between the pen barrel and the refill and fix them with glue. In addition, the assembly position of the fastener relative to the pen barrel and the refill must be controlled within a limited numerical range. At present, the assembly and gluing of fasteners between the pen barrel and the pen core are generally carried out manually, and the positioning assembly and gluing are carried out based on the proficiency and experience of the operators. The efficiency is low, and the accuracy of assembly and gluing cannot be guaranteed. In particular, during the gluing process, it is necessary to prevent excess glue from contaminating the electronic components on the inner wall of the pen barrel and the outer wall of the pen core, thereby affecting the product quality.

[0003] Therefore, there is an urgent need for an automatic assembly alignment device with a simple structure, high assembly accuracy and high efficiency to overcome the above problems, so as to improve production efficiency and product quality at the same time. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic assembly alignment device with simple structure, high assembly accuracy, high efficiency and firm assembly.

[0005] In order to achieve the above-mentioned purpose, the present invention discloses an automatic assembly alignment device, which is suitable for assembling fasteners between a refill of a stylus pen and a pen barrel. The automatic assembly alignment device comprises a conveying device, a glue dispensing device, a assembling device and a screwing device arranged in sequence along the conveying direction of the conveying device, and a spraying device arranged beside the assembling device. The conveying device is used to convey the fasteners supported on the positioning fixture and the stylus pen fixed in the positioning fixture; the glue dispensing device is used to dispense thread glue on the outer thread of the refill located at the barrel mouth of the pen barrel; The assembly device moves back and forth between the conveying device and the spraying device, and is used to transfer the fastener on the positioning fixture to the spraying device, and cooperate with the spraying device to spray the catalyst on the inner wall of the fastener, and is also used to put the sprayed fastener on the pen core after gluing; the screwing device is used to screw the fastener put on the pen core, so that the fastener is adjusted and bonded at the assembly position, and one end of the fastener in the assembly position is screwed into the pen barrel, and the other end is located outside the pen barrel.

[0006] Compared with the prior art, the automatic assembly alignment device of the present invention includes a transmission device for transmitting the fastener supported on the positioning fixture and the stylus pen fixed in the positioning fixture, the gluing device first applies thread glue on the outer thread of the pen core, and the assembly device cooperates with the spraying device to put the fastener sprayed by the spraying device on the pen core after gluing, and the screwing device screws the fastener to the assembly position at the mouth of the pen barrel. Under the action of the catalyst and the thread glue, the fastener screwed to the assembly position is firmly bonded to the assembly position. The automatic assembly alignment device of the present invention can realize automated flow operation, with a simple structure. The assembly accuracy is effectively guaranteed by first placing the fastener in position and then screwing it to the assembly position. The cooperation of the catalyst and the thread glue can not only accelerate the curing speed of the thread glue, thereby effectively improving the bonding firmness, but also, to a certain extent, avoid the problem of product contamination caused by overflow glue due to the relatively long curing time of the thread glue, thereby effectively ensuring product quality while improving production efficiency.

[0007] Preferably, the conveying device includes two conveying rails arranged side by side, a glue device and a connecting device are sequentially mounted above the two conveying rails and can move back and forth between the two conveying rails, the two screwing devices are arranged on the rear side of the connecting device in a one-to-one correspondence with the two conveying rails, and a spraying device is fixedly installed on the side of at least one of the conveying rails.

[0008] Preferably, the conveying device also includes a track changing mechanism arranged between the two conveying guide rails, the track changing mechanism includes a pushing plate arranged at the head and tail ends of the two conveying guide rails and located below the two conveying guide rails, a receiving guide rail arranged between the two conveying guide rails and with a conveying direction perpendicular to the conveying directions of the two conveying guide rails, and two pushing members arranged at the head end of one conveying guide rail and the tail end of the other conveying guide rail, the pushing plate is used to push or receive the positioning fixture so that the positioning fixture can be detached from or fall back onto the conveying guide rail, and the pushing member is used to push the positioning fixture that has detached from the conveying guide rail so that it can flow to the other conveying guide rail through the receiving guide rail.

[0009] Preferably, the glue dispensing needle nozzle of the glue dispensing device is configured to be able to swing.

[0010] Preferably, the assembly device can rotate the transferred fastener by a certain angle so that the inner wall of the fastener is opposite to the nozzle of the spraying device. The assembly device can also drive the fastener to rotate relative to the nozzle so as to spray the catalyst circumferentially on its inner wall.

[0011] Preferably, the nozzle of the spraying device can make an oblique motion towards or away from the fastener, and can also swing at a certain angle relative to the fastener.

[0012] Preferably, the spraying device also includes a mounting seat and a first driver, a rotating disk, a follower plate, a second driver and a nozzle mounted on the mounting seat, the first driver is mounted on the back side of the mounting seat, the rotating disk is rotatably mounted on the front side of the mounting seat and is connected to the output end of the first driver, the follower plate is fixed on the rotating disk at an angle relative to the mounting seat, the second driver is mounted on the follower plate, the nozzle is connected to the output end of the second driver through the nozzle connected thereto, the second driver can drive the nozzle to move obliquely relative to the mounting seat, the first driver can drive the rotating disk to rotate, so that the follower plate drives the second driver to rotate, and the nozzle drives the nozzle to deflect by a certain angle relative to the mounting seat.

[0013] Preferably, the spraying device also includes a first linear guide and a driving plate installed on the back of the mounting seat, the linear guide is arranged along the longitudinal direction of the mounting seat, one end of the driving plate is slidably mounted on the first linear guide, and the other end of the driving plate is provided with a straight slide groove arranged along its transverse width direction, and an arcuate slide groove is provided on the mounting seat at a position corresponding to the linear slide groove along its longitudinal direction, and the plug-in portion of the rotating disk passes through the arcuate slide groove and can be slidably engaged in the linear slide groove, and the first driver can push the driving plate so that one end of it slides along the first linear guide and the other end rotates relatively, thereby driving the rotating disk inserted in the arcuate slide groove and the linear slide groove to rotate.

[0014] Preferably, the screwing device includes a twisting head disposed above the conveying device, the twisting head can move linearly to be plugged into or separated from the fastener, and the twisting head can also rotate to drive the fastener to rotate around the pen core until it is screwed into the assembly position.

[0015] Preferably, the twist joint is tubular and has a slotted hole on its wall, and the pipe opening of the twist joint has a plug-in structure that matches the top end of the fastener in a concave-convex manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the exploded structure of some components of the touch pen of the present invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the positioning fixture of the present invention.

[0018] Figure 3 It is a side view of the automatic assembly alignment device of the present invention.

[0019] Figure 4 It is a schematic diagram of the planar structure of the automatic assembly alignment device of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the conveying device of the present invention.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the glue dispensing device of the present invention.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the assembly device of the present invention.

[0023] Figure 8 It is a structural schematic diagram of the spraying device of the present invention from one angle.

[0024] Fig. 9 It is a schematic structural diagram of the spraying device of the present invention from another angle.

[0025] Fig.10 It is a schematic diagram of the three-dimensional structure of the screwing device of the present invention.

[0026] Fig.11 It is a schematic diagram of the three-dimensional structure of the screwing head of the present invention.

[0027] Fig.12 for Figure 5 Enlarged view of part A. DETAILED DESCRIPTION

[0028] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

[0029] See also Figure 1 and Figure 2 The present invention relates to a stylus pen 200 used in electronic products such as mobile phones, tablet computers and electronic dictionaries. In the present application, the refill 201 of the stylus pen 200 is sleeved and fixed in the pen barrel 202. In order to strengthen the firmness of the refill 201 in the pen barrel 202 and avoid shaking, at least one fastener 300 can be installed between the refill 201 and the pen barrel 202. Specifically, the fastener 300 includes but is not limited to a nut. The top of the fastener 300 has a plurality of grooves 301 arranged at intervals. In this embodiment, the number of the grooves 301 is 4 and they are arranged symmetrically. Three slots 2021 are equally divided on the wall of the pen barrel 202 along its circumference. The three slots 2021 can conveniently realize the dispensing operation at the refill 201, and the assembly position between the fastener 300 and the refill 201 can also be observed. Among them, the fastener 300 is specifically fixed at the mouth of the pen barrel 202, one end of which is located inside the pen barrel 202, and the other end is located outside the pen barrel 202. Therefore, the assembly position w1 required by the fastener 300 can be controlled by the assembly distance h between its top surface and the tip of the pen core 201, which needs to be specifically controlled at about 5.3mm, with an error of plus or minus 0.03mm.

[0030] See also Figures 2 to 4The present invention discloses an automatic assembly alignment device 100, which is suitable for assembling a fastener 300 between a pen core 201 and a pen barrel 202 of a stylus pen 200. The fastener 300 is accurately aligned and screwed between the pen core 201 and the pen barrel 202, and then thread glue is applied to the external thread of the pen core 201 and a catalyst is sprayed on the internal thread of the fastener 300 to achieve a firm adhesion of the fastener 300 to the pen core 201, thereby strengthening the firmness of the assembly of the pen core 201 in the pen barrel 202 and avoiding shaking. Specifically, the automatic assembly alignment device 100 of the present invention includes a conveying device 10 arranged along the longitudinal direction of a working platform 101, a glue dispensing device 20, an assembly device 30 and a screwing device 40 arranged in sequence along the conveying direction of the conveying device 10, and a spraying device 50 arranged beside the assembly device 30. The conveying device 10 is used to convey the fastener 300 supported on the positioning column 61 of the positioning fixture 60 and the stylus 200 fixed in the positioning fixture 60; the glue dispensing device 20 is used to dispense thread glue on the outer thread of the pen core 201 located at the barrel mouth of the pen barrel 202; the assembly device 30 travels back and forth between the conveying device 10 and the spraying device 50, and is used to transfer the fastener 300 on the positioning fixture 60 to the spraying device 50, and cooperate with the spraying device 50 to spray the catalyst on the inner wall of the fastener 300, and is also used to sleeve the sprayed fastener 300 on the pen core 201 after glue dispensing; the screwing device 40 is used to screw the fastener 300 sleeved on the pen core 201, so that the fastener 300 is adjusted and bonded at the assembly position w1, and one end of the fastener 300 at the assembly position w1 is screwed into the pen barrel 202, and the other end is located outside the pen barrel 202.

[0031] Of course, the automatic assembly alignment equipment 100 disclosed in the present invention also includes a casing (not shown in the figure) covering the outside of the conveying device 10, the gluing device 20, the assembling device 30, the screwing device 40 and the spraying device 50, and a control system. The control system is used to control the coordinated actions between the conveying device 10, the gluing device 20, the assembling device 30, the screwing device 40 and the spraying device 50 electrically connected thereto. Among them, the control system is an existing control system, and its structure and control principle are well known in the art, so it will not be described in detail here.

[0032] In order to balance the production line to improve efficiency, the conveying device 10 includes two conveying rails 11 arranged side by side. The number of the dispensing device 20 and the assembly device 30 is one, and the two are sequentially mounted above the two conveying rails 11, so that they can go back and forth between the two conveying rails 11, and then can alternately complete corresponding actions on the two conveying rails 11. The number of the spraying device 50 is at least one, which can be fixed on the side of any conveying rail 11. Since the time required for screwing and positioning is relatively long, the screwing device 40 is set on the rear side of the dispensing device 20 and corresponds to the two conveying rails 11 one by one.

[0033] See also Figure 5 The conveying device 10 also includes a track-changing mechanism 12 disposed between the two conveying guide rails 11. The track-changing mechanism 12 includes a push plate 121 disposed at the head and tail ends of the two conveying guide rails 11 and located below the two, a receiving guide rail 122 disposed between the two conveying guide rails 11 and having a conveying direction perpendicular to the conveying directions of the two, and two push members 123 disposed at the head end of one conveying guide rail 11 and the tail end of the other conveying guide rail 11. The push plate 121 is used to push or receive the positioning fixture 60 so that the positioning fixture 60 can be detached from or fall back onto the conveying guide rail 11. The push member 123 is used to push the positioning fixture 60 that has detached from the conveying guide rail 11 so that it can flow to the other conveying guide rail 11 through the receiving guide rail 122. The track-changing mechanism 12 has a simple structure, effective use of space, and a reasonable layout. It quickly and effectively realizes the transmission of the positioning fixture 60 between the two conveying guide rails 11, avoiding the problems of positioning and transfer when changing tracks by a robot.

[0034] See also Figure 6 The glue dispensing needle 21 of the glue dispensing device 20 is swayable so as to dispense thread glue to the pen core 201. When the glue dispensing needle 21 is swayed, in addition to being convenient for directly dispensing glue circumferentially on the pen core 201 outside the barrel opening of the pen barrel 202, the glue dispensing needle 21 can also extend into the pen barrel 202 through the slot 2021 opened on the barrel wall of the pen barrel 202 to dispense glue to the pen core 201 inside the barrel opening of the pen barrel 202. Specifically, the glue dispensing device 20 also includes a glue dispensing drive mechanism 22 and a rotating mechanism 23 (see Figure 5 ), the glue dispensing drive mechanism 22 can drive the glue dispensing nozzle 21 connected thereto to move linearly and rotate, so that the glue dispensing nozzle 21 can be close to the pen barrel 202 and can be swung relative to the pen barrel 202 to a position convenient for glue dispensing. The rotating mechanism 23 is arranged below the conveying guide rail 11 of the conveying device 10, and can move linearly up and down relative to the conveying device 10 to push or receive the positioning fixture 60, so that the positioning fixture 60 can be separated from the conveying of the conveying device 10. The rotating mechanism 23 then drives the positioning fixture 60 to rotate. Each rotation of 120° can make the glue dispensing nozzle 21 relatively motionless, and drive the pen barrel 202 to rotate through the rotating mechanism 23, so as to realize the application of thread glue on the external thread of the pen core 201, so that the glue is distributed more evenly and the bonding is more firm. In addition, the glue dispensing device 20 also includes a waste glue collection bucket 24, which is arranged below the glue dispensing drive mechanism 22 and is used to collect the residual glue at the glue dispensing nozzle 21.

[0035] See also Figure 7, the assembly device 30 can rotate the transferred fastener 300 by a certain angle, so that the inner wall of the fastener 300 is opposite to the nozzle 51 of the spraying device 50, and the assembly device 30 can also drive the fastener 300 to rotate relative to the nozzle 51, so as to spray the catalyst on the inner wall circumferentially. Specifically, the assembly device 30 includes a clamp 31 and an assembly drive mechanism 32 connected to the clamp 31. The linear module of the assembly drive mechanism 32 can drive the clamp 31 to make a linear motion to grab and transfer the fastener 300. The rotation driver 321 connected to the output end of the linear module can drive the clamp 31 connected thereto to rotate 90° relative to the working platform 101, so that the fastener 300 first swings to a position where its inner wall can be opposite to the nozzle 51 of the spraying device 50. At this time, the fastener 300 is turned from horizontal to vertical, which is convenient for the nozzle 51 to spray the catalyst, and the sprayed catalyst is not easy to flow out during the return process. The clamping jaw 31 can also rotate 360° relative to the surrounding nozzle 51 under the drive of the rotary driver 322 connected to the output end of the rotary driver 321, so that the nozzle 51 does not need to rotate, and the clamping jaw 31 only needs to drive the fastener 300 to rotate, so as to achieve uniform spraying of the catalyst on the inner wall of the fastener 300. In addition, a fiber optic sensor 323 is also provided at the center of the clamping portion of the clamping jaw 31, which is used to sense whether the clamping jaw 31 is holding the fastener 300.

[0036] See also Figure 8 and Fig. 9 When the clamp 31 drives the fastener 300 to the predetermined spraying position and is in a vertical direction, the nozzle 51 of the spraying device 50 can move diagonally toward or away from the fastener 300, further approaching the inner wall of the fastener 300, and then complete the corresponding spraying operation. In order to improve adaptability, the nozzle 51 is set to be deflectable.

[0037] Specifically, the spraying device 50 also includes a mounting seat 52 and a first driver 53, a rotating disk 54, a follower plate 55 and a second driver 56 installed on the mounting seat 52. The first driver 53 is installed on the back of the mounting seat 52, the rotating disk 54 is rotatably installed on the front of the mounting seat 52 and is connected to the output end of the first driver 53, the follower plate 55 is fixed on the rotating disk 54 at an angle relative to the mounting seat 52, the second driver 56 is installed on the follower plate 55, the nozzle 51 is connected to the output end of the second driver 56 through the nozzle 57 connected thereto, the second driver 56 can drive the nozzle 57 to drive the nozzle 51 to move obliquely relative to the mounting seat 52, the first driver 53 can drive the rotating disk 54 to rotate, so that the follower plate 55 drives the second driver 56 to rotate, and the nozzle 51 is deflected by a certain angle relative to the mounting seat 52.

[0038] More specifically, the spraying device 50 further includes a linear guide rail 521 and a driving plate 522 mounted on the back of the mounting seat 52. The linear guide rail 521 is arranged along the longitudinal direction of the mounting seat 52. One end of the driving plate 522 is slidably mounted on the linear guide rail 521. The other end of the driving plate 522 is provided with a straight line slot 5221 arranged along its transverse width direction. An arc slot 523 is provided at a position corresponding to the linear slot 5221 along its longitudinal direction on the mounting seat 52. The plug-in portion 541 of the rotating disk 54 passes through the arc slot 523 and is slidably engaged in the linear slot 5221. The first driver 53 can push the driving plate 522 so that one end of the driving plate 522 slides along the linear guide rail 521 and the other end rotates relatively, thereby driving the rotating disk 54 inserted in the arc slot 523 and the linear slot 5221 to rotate, thereby driving the nozzle 51 to deflect by a certain angle relative to the mounting seat 52. The first driver 53 and the second driver 56 are both linear motors.

[0039] The deflectable setting of the nozzle 51 can not only improve the adaptability of the spraying device 50, and facilitate the spraying operation of products at different spraying positions, but also the nozzle 51 can be deflected to a position convenient for cleaning the residual glue of the nozzle 51 and calibrating the nozzle 51. The mounting seat 52 is also provided with a collecting bucket 58 and a calibration piece 59, and the calibration piece 59 can be flipped and installed on the mounting seat 52 through a flip plate 591, so that it can be flipped and stored when not in use, so as to make way for the collecting bucket 58 to collect the dripping catalyst, and the structure is simple and space is effectively used.

[0040] See also Figures 10 to 12 The screwing device 40 includes a twisting head 41 disposed above the conveying device 10. The twisting head 41 can move linearly to be plugged into or separated from the fastener 300. The twisting head 41 can also rotate to drive the fastener 300 to rotate around the pen core 201 until it is screwed into the assembly position w1.

[0041] See also Fig.11 The twist joint 41 is tubular and has a slot 411 on its wall. The mouth of the twist joint 41 has a plug-in structure 42 that matches the top of the fastener 300 in a concave-convex manner. Specifically, the number of the slots 411 is multiple, so that it is convenient to observe and confirm whether the fastener 300 is assembled in place through the slots 411. Preferably, when the number of the slots 411 is an odd number, the effect is better when it is identified by side lighting. The plug-in structure 42 includes convex teeth 421 arranged in a one-to-one correspondence with the multiple grooves 301 at the top of the fastener 300 and a plug-in groove 422 formed between adjacent convex teeth 421. When plugging, the convex teeth 421 of the twist joint 41 are plugged in one-to-one with the multiple grooves 301 at the top of the fastener 300. At the same time, the top part between two adjacent grooves 301 of the fastener 300 is plugged in with the plug-in groove 422, so that the fastener 300 can be driven to rotate.

[0042] The screwing device 40 also includes a screwing drive mechanism 43, which can drive the twisting head 41 connected thereto to move linearly and rotate, wherein a torque sensor 432 and a damper 433 are also provided between the rotary driver 431 of the screwing drive mechanism 43 and the twisting head 41, so as to accurately control the knob action of the twisting head 41. After driving the twisting head 41 to move linearly until it is inserted into the pen barrel 202 and plugged with the fastener 300, the knob drive mechanism 43 can also drive the twisting head 41 to rotate forward and reversely around the pen core 201, that is, to move up and down relative to the pen barrel 202, thereby promoting the catalyst and thread glue between the fastener 300 and the pen core 201 to be fully mixed, and then the twisting head 41 is rotated to adjust the assembly distance h between the top surface of the fastener 300 and the tip of the pen core 201 until it is adjusted to the desired assembly position w1.

[0043] See also Fig.12 In order to improve the screwing accuracy, the screwing device 40 also includes a positioning member 44 and a positioning drive mechanism 45 arranged beside the transmission guide rail 11. The positioning drive mechanism 45 can drive the positioning member 44 connected thereto to reciprocate linearly, so that the positioning member 44 can approach or move away from the positioning fixture 60, thereby clamping or loosening the pen holder 302 in the positioning fixture 60 from the upper and lower ends of the positioning fixture 60, wherein the clamping portion 441 at the lower end can pass through the window 62 of the positioning fixture 60 and extend into the positioning fixture 60 to fix the pen holder 302 from the lower side, and the clamping portion 441 at the upper end is at the top of the positioning fixture 60 to fix the pen holder 302 from the upper side.

[0044] In order to improve the screwing accuracy, the screwing device 40 also includes an industrial camera 46, which is arranged above and beside the conveying device 10. The industrial camera 46 above is used to identify the position of the fastener 300, and the industrial camera 46 beside is used to identify the assembly position between the fastener 300 and the pen core 201 under the action of the reflector 47. Specifically, the assembly position of the fastener 300 in the pen barrel 202 can be identified through the slot 2021 on the barrel wall of the pen barrel 202 and the slot 411 on the tube wall of the twist joint 41, and the assembly distance between the top surface of the fastener 300 outside the pen barrel 202 and the tip of the pen core 201 can also be directly identified.

[0045] Combined with Figure 1 To Attachment Fig.12 The working principle of the automatic assembly alignment device 100 of the present invention is described as follows:

[0046] After starting the equipment, under the instruction of the control system, the conveying device 10 conveys the positioning jig 60 carrying the fastener 300 and the stylus 200 circulating from the previous equipment alternately on its two conveying guide rails 11; when the positioning device 60 is conveyed to the dispensing device 20, the dispensing needle 21 of the dispensing device 20 is tilted at a certain angle to approach the pen core 201, and cooperates with the rotating mechanism 23 to drive the positioning jig 60 to rotate, each time rotating 120°, and the thread glue is applied to the circumference of the pen core 201; the positioning jig 60 is further conveyed to the assembly device 20, and the assembly device 20 removes the fastener 300 from the positioning jig 60 and transfers it to the spraying device 50, and rotates the fastener 300 90°, and the nozzle 51 of the spraying device 50 is tilted downward Move to get close to the inner wall of the fastener 300 and start spraying the catalyst. The fastener 300 then rotates 360° around the nozzle 51, so that the catalyst is evenly sprayed on the circumference of its inner wall. After that, the assembly device 20 returns to the conveying device 10 and puts the sprayed fastener 300 on the pen core 201 after dispensing; the positioning fixture 60 is further conveyed to the screwing device 40, and the screwing device 40 first repeatedly rotates the fastener 300 to fully mix the catalyst and the thread glue, and then with the cooperation of the industrial camera 46, accurately adjusts the assembly gap h between the fastener 300 and the pen core 201 until it is adjusted to the required assembly position; finally, after the assembly is completed, the positioning fixture 60 is conveyed on the conveying guide rail 11 to discharge the material.

[0047] By repeating the above operation continuously, the automated assembly line operation of the fastener 300 between the pen core 201 and the pen barrel 202 of the stylus pen 200 can be realized.

[0048] Compared with the prior art, the automatic assembly alignment device 100 of the present invention transmits the fastener 300 supported on the positioning fixture 60 and the stylus 200 fixed in the positioning fixture 60 through the conveying device 10, the glue dispensing device 20 first dispenses thread glue on the outer thread of the pen core 201, the assembly device 30 transfers the fastener 300 on the positioning fixture 60 to the spraying device 50, and cooperates with the spraying device 50 to spray the catalyst on the inner wall of the fastener 300, and then the fastener 300 after spraying is mounted on the pen core 201 after glue dispensing, and in the process of the screwing device 40 screwing the fastener 300 to make it rotate to the assembly position w1 at the barrel mouth of the pen barrel 202, the catalyst is mixed with the thread glue, so that the fastener 300 rotated to the assembly position w1 is firmly bonded to the assembly position. The automatic assembly alignment equipment 100 of the present invention can realize automated assembly line operation, has a simple structure, and the operations of first placing and then aligning and screwing are simple and effective to realize accurate assembly. Moreover, through the cooperation of the catalyst and the thread glue, it can not only accelerate the curing speed of the thread glue and effectively improve the bonding strength, but also, to a certain extent, it can avoid the problem of product contamination caused by overflow of the thread glue due to the relatively long curing time of the thread glue, thereby effectively ensuring product quality while improving production efficiency.

[0049] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. An automatic assembly alignment device, suitable for assembling fasteners between a stylus pen core and a pen barrel, characterized in that: The automatic assembly alignment device includes a conveying device, a dispensing device, a assembling device and a screwing device arranged in sequence along the conveying direction of the conveying device, and a spraying device arranged beside the assembling device. The conveying device is used to convey the fasteners supported on the positioning fixture and the stylus fixed in the positioning fixture. The glue dispensing device is used to dispense thread glue on the outer threads of the pen core located at the barrel mouth of the pen barrel; The assembly device travels back and forth between the conveying device and the spraying device, and is used to transfer the fastener on the positioning fixture to the spraying device, and cooperate with the spraying device to spray the catalyst on the inner wall of the fastener, and is also used to put the sprayed fastener on the pen core after gluing; the screwing device is used to screw the fastener put on the pen core, so that the fastener is adjusted and bonded at the assembly position, and one end of the fastener in the assembly position is screwed into the pen barrel, and the other end is located outside the pen barrel.

2. The automatic assembly alignment device according to claim 1, characterized in that: The conveying device includes two conveying rails arranged side by side, a glue device and a connecting device are sequentially mounted above the two conveying rails and can move back and forth between the two conveying rails, the two screwing devices are arranged on the rear side of the connecting device in a one-to-one correspondence with the two conveying rails, and a spraying device is fixedly installed on the side of at least one of the conveying rails.

3. The automatic assembly alignment device according to claim 2, characterized in that: The conveying device also includes a track changing mechanism arranged between the two conveying guide rails, and the track changing mechanism includes a pushing plate arranged at the head end and the tail end of the two conveying guide rails and located below the two conveying guide rails, a receiving guide rail arranged between the two conveying guide rails and the conveying direction of which is perpendicular to the conveying direction of the two conveying guide rails, and two pushing members arranged at the head end of one conveying guide rail and the tail end of the other conveying guide rail. The pushing plate is used to push or receive the positioning fixture so that the positioning fixture can be detached from or fall back onto the conveying guide rail, and the pushing member is used to push the positioning fixture that has detached from the conveying guide rail so that it can flow to the other conveying guide rail through the receiving guide rail.

4. The automatic assembly alignment device according to claim 1, characterized in that: The glue dispensing needle nozzle of the glue dispensing device is arranged to be able to swing.

5. The automatic assembly alignment device according to claim 1, characterized in that: The assembly device can rotate the transferred fastener by a certain angle so that the inner wall of the fastener faces the nozzle of the spraying device. The assembly device can also drive the fastener to rotate relative to the nozzle so as to spray the catalyst circumferentially on its inner wall.

6. The automatic assembly alignment device according to claim 1, characterized in that: The nozzle of the spraying device can make an oblique motion close to or away from the fastener, and can also swing at a certain angle relative to the fastener.

7. The automatic assembly alignment device according to claim 6, characterized in that: The spraying device also includes a mounting seat and a first driver, a rotating disk, a follower plate, a second driver and a nozzle mounted on the mounting seat. The first driver is mounted on the back side of the mounting seat, the rotating disk is rotatably mounted on the front side of the mounting seat and is connected to the output end of the first driver, the follower plate is fixed on the rotating disk at an angle relative to the mounting seat, the second driver is mounted on the follower plate, the nozzle is connected to the output end of the second driver through the nozzle connected thereto, the second driver can drive the nozzle to move obliquely relative to the mounting seat, the first driver can drive the rotating disk to rotate, so that the follower plate drives the second driver to rotate, and the nozzle drives the nozzle to deflect by a certain angle relative to the mounting seat.

8. The automatic assembly alignment device according to claim 7, characterized in that: The spraying device also includes a first linear guide and a driving plate installed on the back of the mounting seat, the linear guide is arranged along the longitudinal direction of the mounting seat, one end of the driving plate is slidably mounted on the first linear guide, and the other end of the driving plate is provided with a straight slide groove arranged along its transverse width direction; an arcuate slide groove is provided on the mounting seat at a position corresponding to the linear slide groove along its longitudinal direction; the plug-in portion of the rotating disk passes through the arcuate slide groove and can be slidably engaged in the linear slide groove; the first driver can push the driving plate so that one end of it slides along the first linear guide and the other end rotates relatively, thereby driving the rotating disk inserted in the arcuate slide groove and the linear slide groove to rotate.

9. The automatic assembly alignment device according to claim 1, characterized in that: The screwing device comprises a twisting head arranged above the conveying device, the twisting head can move linearly to be plugged into or separated from the fastener, and the twisting head can also rotate to drive the fastener to rotate around the pen core until it is screwed into the assembly position.

10. The automatic assembly alignment device according to claim 9, characterized in that: The twist joint is in a tubular shape and a slot is provided on the wall of the tubular wall. The tubular opening of the twist joint has a plug-in structure which is concave-convexly matched with the top end of the fastener.

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